[media] v4l: move v4l2 core into a separate directory

Currently, the v4l2 core is mixed together with other non-core drivers.
Move them into a separate directory.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

24 files changed, 0 insertions, 17455 deletions

diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig
index a5e3bd044085..068e8daa6b7b 100644
--- a/drivers/media/video/Kconfig
+++ b/drivers/media/video/Kconfig
@@ -2,32 +2,6 @@
 # Generic video config states
 #
 
-config VIDEO_V4L2
-	tristate
-	depends on VIDEO_DEV && VIDEO_V4L2_COMMON
-	default y
-
-config VIDEOBUF_GEN
-	tristate
-
-config VIDEOBUF_DMA_SG
-	depends on HAS_DMA
-	select VIDEOBUF_GEN
-	tristate
-
-config VIDEOBUF_VMALLOC
-	select VIDEOBUF_GEN
-	tristate
-
-config VIDEOBUF_DMA_CONTIG
-	depends on HAS_DMA
-	select VIDEOBUF_GEN
-	tristate
-
-config VIDEOBUF_DVB
-	tristate
-	select VIDEOBUF_GEN
-
 config VIDEO_BTCX
 	depends on PCI
 	tristate
@@ -36,36 +10,6 @@ config VIDEO_TVEEPROM
 	tristate
 	depends on I2C
 
-config VIDEO_TUNER
-	tristate
-	depends on MEDIA_TUNER
-
-config V4L2_MEM2MEM_DEV
-	tristate
-	depends on VIDEOBUF2_CORE
-
-config VIDEOBUF2_CORE
-	tristate
-
-config VIDEOBUF2_MEMOPS
-	tristate
-
-config VIDEOBUF2_DMA_CONTIG
-	select VIDEOBUF2_CORE
-	select VIDEOBUF2_MEMOPS
-	tristate
-
-config VIDEOBUF2_VMALLOC
-	select VIDEOBUF2_CORE
-	select VIDEOBUF2_MEMOPS
-	tristate
-
-
-config VIDEOBUF2_DMA_SG
-	#depends on HAS_DMA
-	select VIDEOBUF2_CORE
-	select VIDEOBUF2_MEMOPS
-	tristate
 #
 # Multimedia Video device configuration
 #
diff --git a/drivers/media/video/Makefile b/drivers/media/video/Makefile
index 12cad1206148..839e2c982376 100644
--- a/drivers/media/video/Makefile
+++ b/drivers/media/video/Makefile
@@ -2,32 +2,18 @@
 # Makefile for the video capture/playback device drivers.
 #
 
-tuner-objs	:=	tuner-core.o
-
 msp3400-objs	:=	msp3400-driver.o msp3400-kthreads.o
 
 stkwebcam-objs	:=	stk-webcam.o stk-sensor.o
 
 omap2cam-objs	:=	omap24xxcam.o omap24xxcam-dma.o
 
-videodev-objs	:=	v4l2-dev.o v4l2-ioctl.o v4l2-device.o v4l2-fh.o \
-			v4l2-event.o v4l2-ctrls.o v4l2-subdev.o
-ifeq ($(CONFIG_COMPAT),y)
-  videodev-objs += v4l2-compat-ioctl32.o
-endif
-
-# V4L2 core modules
-
-obj-$(CONFIG_VIDEO_DEV) += videodev.o v4l2-int-device.o
-obj-$(CONFIG_VIDEO_V4L2_COMMON) += v4l2-common.o
-
 # Helper modules
 
 obj-$(CONFIG_VIDEO_APTINA_PLL) += aptina-pll.o
 
 # All i2c modules must come first:
 
-obj-$(CONFIG_VIDEO_TUNER) += tuner.o
 obj-$(CONFIG_VIDEO_TVAUDIO) += tvaudio.o
 obj-$(CONFIG_VIDEO_TDA7432) += tda7432.o
 obj-$(CONFIG_VIDEO_SAA6588) += saa6588.o
@@ -128,21 +114,8 @@ obj-$(CONFIG_STA2X11_VIP) += sta2x11_vip.o
 obj-$(CONFIG_VIDEO_TIMBERDALE)	+= timblogiw.o
 obj-$(CONFIG_VIDEO_STK1160) += stk1160/
 
-obj-$(CONFIG_VIDEOBUF_GEN) += videobuf-core.o
-obj-$(CONFIG_VIDEOBUF_DMA_SG) += videobuf-dma-sg.o
-obj-$(CONFIG_VIDEOBUF_DMA_CONTIG) += videobuf-dma-contig.o
-obj-$(CONFIG_VIDEOBUF_VMALLOC) += videobuf-vmalloc.o
-obj-$(CONFIG_VIDEOBUF_DVB) += videobuf-dvb.o
 obj-$(CONFIG_VIDEO_BTCX)  += btcx-risc.o
 
-obj-$(CONFIG_VIDEOBUF2_CORE)		+= videobuf2-core.o
-obj-$(CONFIG_VIDEOBUF2_MEMOPS)		+= videobuf2-memops.o
-obj-$(CONFIG_VIDEOBUF2_VMALLOC)		+= videobuf2-vmalloc.o
-obj-$(CONFIG_VIDEOBUF2_DMA_CONTIG)	+= videobuf2-dma-contig.o
-obj-$(CONFIG_VIDEOBUF2_DMA_SG)		+= videobuf2-dma-sg.o
-
-obj-$(CONFIG_V4L2_MEM2MEM_DEV) += v4l2-mem2mem.o
-
 obj-$(CONFIG_VIDEO_M32R_AR_M64278) += arv.o
 
 obj-$(CONFIG_VIDEO_CX2341X) += cx2341x.o
diff --git a/drivers/media/video/tuner-core.c b/drivers/media/video/tuner-core.c
deleted file mode 100644
index b5a819af2b8c..000000000000
--- a/drivers/media/video/tuner-core.c
+++ /dev/null
@@ -1,1354 +0,0 @@
-/*
- * i2c tv tuner chip device driver
- * core core, i.e. kernel interfaces, registering and so on
- *
- * Copyright(c) by Ralph Metzler, Gerd Knorr, Gunther Mayer
- *
- * Copyright(c) 2005-2011 by Mauro Carvalho Chehab
- *	- Added support for a separate Radio tuner
- *	- Major rework and cleanups at the code
- *
- * This driver supports many devices and the idea is to let the driver
- * detect which device is present. So rather than listing all supported
- * devices here, we pretend to support a single, fake device type that will
- * handle both radio and analog TV tuning.
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/slab.h>
-#include <linux/poll.h>
-#include <linux/i2c.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/videodev2.h>
-#include <media/tuner.h>
-#include <media/tuner-types.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-ioctl.h>
-#include "mt20xx.h"
-#include "tda8290.h"
-#include "tea5761.h"
-#include "tea5767.h"
-#include "tuner-xc2028.h"
-#include "tuner-simple.h"
-#include "tda9887.h"
-#include "xc5000.h"
-#include "tda18271.h"
-#include "xc4000.h"
-
-#define UNSET (-1U)
-
-#define PREFIX (t->i2c->driver->driver.name)
-
-/*
- * Driver modprobe parameters
- */
-
-/* insmod options used at init time => read/only */
-static unsigned int addr;
-static unsigned int no_autodetect;
-static unsigned int show_i2c;
-
-module_param(addr, int, 0444);
-module_param(no_autodetect, int, 0444);
-module_param(show_i2c, int, 0444);
-
-/* insmod options used at runtime => read/write */
-static int tuner_debug;
-static unsigned int tv_range[2] = { 44, 958 };
-static unsigned int radio_range[2] = { 65, 108 };
-static char pal[] = "--";
-static char secam[] = "--";
-static char ntsc[] = "-";
-
-module_param_named(debug, tuner_debug, int, 0644);
-module_param_array(tv_range, int, NULL, 0644);
-module_param_array(radio_range, int, NULL, 0644);
-module_param_string(pal, pal, sizeof(pal), 0644);
-module_param_string(secam, secam, sizeof(secam), 0644);
-module_param_string(ntsc, ntsc, sizeof(ntsc), 0644);
-
-/*
- * Static vars
- */
-
-static LIST_HEAD(tuner_list);
-static const struct v4l2_subdev_ops tuner_ops;
-
-/*
- * Debug macros
- */
-
-#define tuner_warn(fmt, arg...) do {			\
-	printk(KERN_WARNING "%s %d-%04x: " fmt, PREFIX, \
-	       i2c_adapter_id(t->i2c->adapter),		\
-	       t->i2c->addr, ##arg);			\
-	 } while (0)
-
-#define tuner_info(fmt, arg...) do {			\
-	printk(KERN_INFO "%s %d-%04x: " fmt, PREFIX,	\
-	       i2c_adapter_id(t->i2c->adapter),		\
-	       t->i2c->addr, ##arg);			\
-	 } while (0)
-
-#define tuner_err(fmt, arg...) do {			\
-	printk(KERN_ERR "%s %d-%04x: " fmt, PREFIX,	\
-	       i2c_adapter_id(t->i2c->adapter),		\
-	       t->i2c->addr, ##arg);			\
-	 } while (0)
-
-#define tuner_dbg(fmt, arg...) do {				\
-	if (tuner_debug)					\
-		printk(KERN_DEBUG "%s %d-%04x: " fmt, PREFIX,	\
-		       i2c_adapter_id(t->i2c->adapter),		\
-		       t->i2c->addr, ##arg);			\
-	 } while (0)
-
-/*
- * Internal struct used inside the driver
- */
-
-struct tuner {
-	/* device */
-	struct dvb_frontend fe;
-	struct i2c_client   *i2c;
-	struct v4l2_subdev  sd;
-	struct list_head    list;
-
-	/* keep track of the current settings */
-	v4l2_std_id         std;
-	unsigned int        tv_freq;
-	unsigned int        radio_freq;
-	unsigned int        audmode;
-
-	enum v4l2_tuner_type mode;
-	unsigned int        mode_mask; /* Combination of allowable modes */
-
-	bool                standby;	/* Standby mode */
-
-	unsigned int        type; /* chip type id */
-	unsigned int        config;
-	const char          *name;
-};
-
-/*
- * Function prototypes
- */
-
-static void set_tv_freq(struct i2c_client *c, unsigned int freq);
-static void set_radio_freq(struct i2c_client *c, unsigned int freq);
-
-/*
- * tuner attach/detach logic
- */
-
-/* This macro allows us to probe dynamically, avoiding static links */
-#ifdef CONFIG_MEDIA_ATTACH
-#define tuner_symbol_probe(FUNCTION, ARGS...) ({ \
-	int __r = -EINVAL; \
-	typeof(&FUNCTION) __a = symbol_request(FUNCTION); \
-	if (__a) { \
-		__r = (int) __a(ARGS); \
-		symbol_put(FUNCTION); \
-	} else { \
-		printk(KERN_ERR "TUNER: Unable to find " \
-				"symbol "#FUNCTION"()\n"); \
-	} \
-	__r; \
-})
-
-static void tuner_detach(struct dvb_frontend *fe)
-{
-	if (fe->ops.tuner_ops.release) {
-		fe->ops.tuner_ops.release(fe);
-		symbol_put_addr(fe->ops.tuner_ops.release);
-	}
-	if (fe->ops.analog_ops.release) {
-		fe->ops.analog_ops.release(fe);
-		symbol_put_addr(fe->ops.analog_ops.release);
-	}
-}
-#else
-#define tuner_symbol_probe(FUNCTION, ARGS...) ({ \
-	FUNCTION(ARGS); \
-})
-
-static void tuner_detach(struct dvb_frontend *fe)
-{
-	if (fe->ops.tuner_ops.release)
-		fe->ops.tuner_ops.release(fe);
-	if (fe->ops.analog_ops.release)
-		fe->ops.analog_ops.release(fe);
-}
-#endif
-
-
-static inline struct tuner *to_tuner(struct v4l2_subdev *sd)
-{
-	return container_of(sd, struct tuner, sd);
-}
-
-/*
- * struct analog_demod_ops callbacks
- */
-
-static void fe_set_params(struct dvb_frontend *fe,
-			  struct analog_parameters *params)
-{
-	struct dvb_tuner_ops *fe_tuner_ops = &fe->ops.tuner_ops;
-	struct tuner *t = fe->analog_demod_priv;
-
-	if (NULL == fe_tuner_ops->set_analog_params) {
-		tuner_warn("Tuner frontend module has no way to set freq\n");
-		return;
-	}
-	fe_tuner_ops->set_analog_params(fe, params);
-}
-
-static void fe_standby(struct dvb_frontend *fe)
-{
-	struct dvb_tuner_ops *fe_tuner_ops = &fe->ops.tuner_ops;
-
-	if (fe_tuner_ops->sleep)
-		fe_tuner_ops->sleep(fe);
-}
-
-static int fe_has_signal(struct dvb_frontend *fe)
-{
-	u16 strength = 0;
-
-	if (fe->ops.tuner_ops.get_rf_strength)
-		fe->ops.tuner_ops.get_rf_strength(fe, &strength);
-
-	return strength;
-}
-
-static int fe_get_afc(struct dvb_frontend *fe)
-{
-	s32 afc = 0;
-
-	if (fe->ops.tuner_ops.get_afc)
-		fe->ops.tuner_ops.get_afc(fe, &afc);
-
-	return 0;
-}
-
-static int fe_set_config(struct dvb_frontend *fe, void *priv_cfg)
-{
-	struct dvb_tuner_ops *fe_tuner_ops = &fe->ops.tuner_ops;
-	struct tuner *t = fe->analog_demod_priv;
-
-	if (fe_tuner_ops->set_config)
-		return fe_tuner_ops->set_config(fe, priv_cfg);
-
-	tuner_warn("Tuner frontend module has no way to set config\n");
-
-	return 0;
-}
-
-static void tuner_status(struct dvb_frontend *fe);
-
-static struct analog_demod_ops tuner_analog_ops = {
-	.set_params     = fe_set_params,
-	.standby        = fe_standby,
-	.has_signal     = fe_has_signal,
-	.get_afc        = fe_get_afc,
-	.set_config     = fe_set_config,
-	.tuner_status   = tuner_status
-};
-
-/*
- * Functions to select between radio and TV and tuner probe/remove functions
- */
-
-/**
- * set_type - Sets the tuner type for a given device
- *
- * @c:			i2c_client descriptoy
- * @type:		type of the tuner (e. g. tuner number)
- * @new_mode_mask:	Indicates if tuner supports TV and/or Radio
- * @new_config:		an optional parameter ranging from 0-255 used by
-			a few tuners to adjust an internal parameter,
-			like LNA mode
- * @tuner_callback:	an optional function to be called when switching
- *			to analog mode
- *
- * This function applys the tuner config to tuner specified
- * by tun_setup structure. It contains several per-tuner initialization "magic"
- */
-static void set_type(struct i2c_client *c, unsigned int type,
-		     unsigned int new_mode_mask, unsigned int new_config,
-		     int (*tuner_callback) (void *dev, int component, int cmd, int arg))
-{
-	struct tuner *t = to_tuner(i2c_get_clientdata(c));
-	struct dvb_tuner_ops *fe_tuner_ops = &t->fe.ops.tuner_ops;
-	struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops;
-	unsigned char buffer[4];
-	int tune_now = 1;
-
-	if (type == UNSET || type == TUNER_ABSENT) {
-		tuner_dbg("tuner 0x%02x: Tuner type absent\n", c->addr);
-		return;
-	}
-
-	t->type = type;
-	/* prevent invalid config values */
-	t->config = new_config < 256 ? new_config : 0;
-	if (tuner_callback != NULL) {
-		tuner_dbg("defining GPIO callback\n");
-		t->fe.callback = tuner_callback;
-	}
-
-	/* discard private data, in case set_type() was previously called */
-	tuner_detach(&t->fe);
-	t->fe.analog_demod_priv = NULL;
-
-	switch (t->type) {
-	case TUNER_MT2032:
-		if (!dvb_attach(microtune_attach,
-			   &t->fe, t->i2c->adapter, t->i2c->addr))
-			goto attach_failed;
-		break;
-	case TUNER_PHILIPS_TDA8290:
-	{
-		struct tda829x_config cfg = {
-			.lna_cfg        = t->config,
-		};
-		if (!dvb_attach(tda829x_attach, &t->fe, t->i2c->adapter,
-				t->i2c->addr, &cfg))
-			goto attach_failed;
-		break;
-	}
-	case TUNER_TEA5767:
-		if (!dvb_attach(tea5767_attach, &t->fe,
-				t->i2c->adapter, t->i2c->addr))
-			goto attach_failed;
-		t->mode_mask = T_RADIO;
-		break;
-	case TUNER_TEA5761:
-		if (!dvb_attach(tea5761_attach, &t->fe,
-				t->i2c->adapter, t->i2c->addr))
-			goto attach_failed;
-		t->mode_mask = T_RADIO;
-		break;
-	case TUNER_PHILIPS_FMD1216ME_MK3:
-	case TUNER_PHILIPS_FMD1216MEX_MK3:
-		buffer[0] = 0x0b;
-		buffer[1] = 0xdc;
-		buffer[2] = 0x9c;
-		buffer[3] = 0x60;
-		i2c_master_send(c, buffer, 4);
-		mdelay(1);
-		buffer[2] = 0x86;
-		buffer[3] = 0x54;
-		i2c_master_send(c, buffer, 4);
-		if (!dvb_attach(simple_tuner_attach, &t->fe,
-				t->i2c->adapter, t->i2c->addr, t->type))
-			goto attach_failed;
-		break;
-	case TUNER_PHILIPS_TD1316:
-		buffer[0] = 0x0b;
-		buffer[1] = 0xdc;
-		buffer[2] = 0x86;
-		buffer[3] = 0xa4;
-		i2c_master_send(c, buffer, 4);
-		if (!dvb_attach(simple_tuner_attach, &t->fe,
-				t->i2c->adapter, t->i2c->addr, t->type))
-			goto attach_failed;
-		break;
-	case TUNER_XC2028:
-	{
-		struct xc2028_config cfg = {
-			.i2c_adap  = t->i2c->adapter,
-			.i2c_addr  = t->i2c->addr,
-		};
-		if (!dvb_attach(xc2028_attach, &t->fe, &cfg))
-			goto attach_failed;
-		tune_now = 0;
-		break;
-	}
-	case TUNER_TDA9887:
-		if (!dvb_attach(tda9887_attach,
-			   &t->fe, t->i2c->adapter, t->i2c->addr))
-			goto attach_failed;
-		break;
-	case TUNER_XC5000:
-	{
-		struct xc5000_config xc5000_cfg = {
-			.i2c_address = t->i2c->addr,
-			/* if_khz will be set at dvb_attach() */
-			.if_khz	  = 0,
-		};
-
-		if (!dvb_attach(xc5000_attach,
-				&t->fe, t->i2c->adapter, &xc5000_cfg))
-			goto attach_failed;
-		tune_now = 0;
-		break;
-	}
-	case TUNER_XC5000C:
-	{
-		struct xc5000_config xc5000c_cfg = {
-			.i2c_address = t->i2c->addr,
-			/* if_khz will be set at dvb_attach() */
-			.if_khz	  = 0,
-			.chip_id  = XC5000C,
-		};
-
-		if (!dvb_attach(xc5000_attach,
-				&t->fe, t->i2c->adapter, &xc5000c_cfg))
-			goto attach_failed;
-		tune_now = 0;
-		break;
-	}
-	case TUNER_NXP_TDA18271:
-	{
-		struct tda18271_config cfg = {
-			.config = t->config,
-			.small_i2c = TDA18271_03_BYTE_CHUNK_INIT,
-		};
-
-		if (!dvb_attach(tda18271_attach, &t->fe, t->i2c->addr,
-				t->i2c->adapter, &cfg))
-			goto attach_failed;
-		tune_now = 0;
-		break;
-	}
-	case TUNER_XC4000:
-	{
-		struct xc4000_config xc4000_cfg = {
-			.i2c_address	  = t->i2c->addr,
-			/* FIXME: the correct parameters will be set */
-			/* only when the digital dvb_attach() occurs */
-			.default_pm	  = 0,
-			.dvb_amplitude	  = 0,
-			.set_smoothedcvbs = 0,
-			.if_khz		  = 0
-		};
-		if (!dvb_attach(xc4000_attach,
-				&t->fe, t->i2c->adapter, &xc4000_cfg))
-			goto attach_failed;
-		tune_now = 0;
-		break;
-	}
-	default:
-		if (!dvb_attach(simple_tuner_attach, &t->fe,
-				t->i2c->adapter, t->i2c->addr, t->type))
-			goto attach_failed;
-
-		break;
-	}
-
-	if ((NULL == analog_ops->set_params) &&
-	    (fe_tuner_ops->set_analog_params)) {
-
-		t->name = fe_tuner_ops->info.name;
-
-		t->fe.analog_demod_priv = t;
-		memcpy(analog_ops, &tuner_analog_ops,
-		       sizeof(struct analog_demod_ops));
-
-	} else {
-		t->name = analog_ops->info.name;
-	}
-
-	tuner_dbg("type set to %s\n", t->name);
-
-	t->mode_mask = new_mode_mask;
-
-	/* Some tuners require more initialization setup before use,
-	   such as firmware download or device calibration.
-	   trying to set a frequency here will just fail
-	   FIXME: better to move set_freq to the tuner code. This is needed
-	   on analog tuners for PLL to properly work
-	 */
-	if (tune_now) {
-		if (V4L2_TUNER_RADIO == t->mode)
-			set_radio_freq(c, t->radio_freq);
-		else
-			set_tv_freq(c, t->tv_freq);
-	}
-
-	tuner_dbg("%s %s I2C addr 0x%02x with type %d used for 0x%02x\n",
-		  c->adapter->name, c->driver->driver.name, c->addr << 1, type,
-		  t->mode_mask);
-	return;
-
-attach_failed:
-	tuner_dbg("Tuner attach for type = %d failed.\n", t->type);
-	t->type = TUNER_ABSENT;
-
-	return;
-}
-
-/**
- * tuner_s_type_addr - Sets the tuner type for a device
- *
- * @sd:		subdev descriptor
- * @tun_setup:	type to be associated to a given tuner i2c address
- *
- * This function applys the tuner config to tuner specified
- * by tun_setup structure.
- * If tuner I2C address is UNSET, then it will only set the device
- * if the tuner supports the mode specified in the call.
- * If the address is specified, the change will be applied only if
- * tuner I2C address matches.
- * The call can change the tuner number and the tuner mode.
- */
-static int tuner_s_type_addr(struct v4l2_subdev *sd,
-			     struct tuner_setup *tun_setup)
-{
-	struct tuner *t = to_tuner(sd);
-	struct i2c_client *c = v4l2_get_subdevdata(sd);
-
-	tuner_dbg("Calling set_type_addr for type=%d, addr=0x%02x, mode=0x%02x, config=0x%02x\n",
-			tun_setup->type,
-			tun_setup->addr,
-			tun_setup->mode_mask,
-			tun_setup->config);
-
-	if ((t->type == UNSET && ((tun_setup->addr == ADDR_UNSET) &&
-	    (t->mode_mask & tun_setup->mode_mask))) ||
-	    (tun_setup->addr == c->addr)) {
-		set_type(c, tun_setup->type, tun_setup->mode_mask,
-			 tun_setup->config, tun_setup->tuner_callback);
-	} else
-		tuner_dbg("set addr discarded for type %i, mask %x. "
-			  "Asked to change tuner at addr 0x%02x, with mask %x\n",
-			  t->type, t->mode_mask,
-			  tun_setup->addr, tun_setup->mode_mask);
-
-	return 0;
-}
-
-/**
- * tuner_s_config - Sets tuner configuration
- *
- * @sd:		subdev descriptor
- * @cfg:	tuner configuration
- *
- * Calls tuner set_config() private function to set some tuner-internal
- * parameters
- */
-static int tuner_s_config(struct v4l2_subdev *sd,
-			  const struct v4l2_priv_tun_config *cfg)
-{
-	struct tuner *t = to_tuner(sd);
-	struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops;
-
-	if (t->type != cfg->tuner)
-		return 0;
-
-	if (analog_ops->set_config) {
-		analog_ops->set_config(&t->fe, cfg->priv);
-		return 0;
-	}
-
-	tuner_dbg("Tuner frontend module has no way to set config\n");
-	return 0;
-}
-
-/**
- * tuner_lookup - Seek for tuner adapters
- *
- * @adap:	i2c_adapter struct
- * @radio:	pointer to be filled if the adapter is radio
- * @tv:		pointer to be filled if the adapter is TV
- *
- * Search for existing radio and/or TV tuners on the given I2C adapter,
- * discarding demod-only adapters (tda9887).
- *
- * Note that when this function is called from tuner_probe you can be
- * certain no other devices will be added/deleted at the same time, I2C
- * core protects against that.
- */
-static void tuner_lookup(struct i2c_adapter *adap,
-		struct tuner **radio, struct tuner **tv)
-{
-	struct tuner *pos;
-
-	*radio = NULL;
-	*tv = NULL;
-
-	list_for_each_entry(pos, &tuner_list, list) {
-		int mode_mask;
-
-		if (pos->i2c->adapter != adap ||
-		    strcmp(pos->i2c->driver->driver.name, "tuner"))
-			continue;
-
-		mode_mask = pos->mode_mask;
-		if (*radio == NULL && mode_mask == T_RADIO)
-			*radio = pos;
-		/* Note: currently TDA9887 is the only demod-only
-		   device. If other devices appear then we need to
-		   make this test more general. */
-		else if (*tv == NULL && pos->type != TUNER_TDA9887 &&
-			 (pos->mode_mask & T_ANALOG_TV))
-			*tv = pos;
-	}
-}
-
-/**
- *tuner_probe - Probes the existing tuners on an I2C bus
- *
- * @client:	i2c_client descriptor
- * @id:		not used
- *
- * This routine probes for tuners at the expected I2C addresses. On most
- * cases, if a device answers to a given I2C address, it assumes that the
- * device is a tuner. On a few cases, however, an additional logic is needed
- * to double check if the device is really a tuner, or to identify the tuner
- * type, like on tea5767/5761 devices.
- *
- * During client attach, set_type is called by adapter's attach_inform callback.
- * set_type must then be completed by tuner_probe.
- */
-static int tuner_probe(struct i2c_client *client,
-		       const struct i2c_device_id *id)
-{
-	struct tuner *t;
-	struct tuner *radio;
-	struct tuner *tv;
-
-	t = kzalloc(sizeof(struct tuner), GFP_KERNEL);
-	if (NULL == t)
-		return -ENOMEM;
-	v4l2_i2c_subdev_init(&t->sd, client, &tuner_ops);
-	t->i2c = client;
-	t->name = "(tuner unset)";
-	t->type = UNSET;
-	t->audmode = V4L2_TUNER_MODE_STEREO;
-	t->standby = 1;
-	t->radio_freq = 87.5 * 16000;	/* Initial freq range */
-	t->tv_freq = 400 * 16; /* Sets freq to VHF High - needed for some PLL's to properly start */
-
-	if (show_i2c) {
-		unsigned char buffer[16];
-		int i, rc;
-
-		memset(buffer, 0, sizeof(buffer));
-		rc = i2c_master_recv(client, buffer, sizeof(buffer));
-		tuner_info("I2C RECV = ");
-		for (i = 0; i < rc; i++)
-			printk(KERN_CONT "%02x ", buffer[i]);
-		printk("\n");
-	}
-
-	/* autodetection code based on the i2c addr */
-	if (!no_autodetect) {
-		switch (client->addr) {
-		case 0x10:
-			if (tuner_symbol_probe(tea5761_autodetection,
-					       t->i2c->adapter,
-					       t->i2c->addr) >= 0) {
-				t->type = TUNER_TEA5761;
-				t->mode_mask = T_RADIO;
-				tuner_lookup(t->i2c->adapter, &radio, &tv);
-				if (tv)
-					tv->mode_mask &= ~T_RADIO;
-
-				goto register_client;
-			}
-			kfree(t);
-			return -ENODEV;
-		case 0x42:
-		case 0x43:
-		case 0x4a:
-		case 0x4b:
-			/* If chip is not tda8290, don't register.
-			   since it can be tda9887*/
-			if (tuner_symbol_probe(tda829x_probe, t->i2c->adapter,
-					       t->i2c->addr) >= 0) {
-				tuner_dbg("tda829x detected\n");
-			} else {
-				/* Default is being tda9887 */
-				t->type = TUNER_TDA9887;
-				t->mode_mask = T_RADIO | T_ANALOG_TV;
-				goto register_client;
-			}
-			break;
-		case 0x60:
-			if (tuner_symbol_probe(tea5767_autodetection,
-					       t->i2c->adapter, t->i2c->addr)
-					>= 0) {
-				t->type = TUNER_TEA5767;
-				t->mode_mask = T_RADIO;
-				/* Sets freq to FM range */
-				tuner_lookup(t->i2c->adapter, &radio, &tv);
-				if (tv)
-					tv->mode_mask &= ~T_RADIO;
-
-				goto register_client;
-			}
-			break;
-		}
-	}
-
-	/* Initializes only the first TV tuner on this adapter. Why only the
-	   first? Because there are some devices (notably the ones with TI
-	   tuners) that have more than one i2c address for the *same* device.
-	   Experience shows that, except for just one case, the first
-	   address is the right one. The exception is a Russian tuner
-	   (ACORP_Y878F). So, the desired behavior is just to enable the
-	   first found TV tuner. */
-	tuner_lookup(t->i2c->adapter, &radio, &tv);
-	if (tv == NULL) {
-		t->mode_mask = T_ANALOG_TV;
-		if (radio == NULL)
-			t->mode_mask |= T_RADIO;
-		tuner_dbg("Setting mode_mask to 0x%02x\n", t->mode_mask);
-	}
-
-	/* Should be just before return */
-register_client:
-	/* Sets a default mode */
-	if (t->mode_mask & T_ANALOG_TV)
-		t->mode = V4L2_TUNER_ANALOG_TV;
-	else
-		t->mode = V4L2_TUNER_RADIO;
-	set_type(client, t->type, t->mode_mask, t->config, t->fe.callback);
-	list_add_tail(&t->list, &tuner_list);
-
-	tuner_info("Tuner %d found with type(s)%s%s.\n",
-		   t->type,
-		   t->mode_mask & T_RADIO ? " Radio" : "",
-		   t->mode_mask & T_ANALOG_TV ? " TV" : "");
-	return 0;
-}
-
-/**
- * tuner_remove - detaches a tuner
- *
- * @client:	i2c_client descriptor
- */
-
-static int tuner_remove(struct i2c_client *client)
-{
-	struct tuner *t = to_tuner(i2c_get_clientdata(client));
-
-	v4l2_device_unregister_subdev(&t->sd);
-	tuner_detach(&t->fe);
-	t->fe.analog_demod_priv = NULL;
-
-	list_del(&t->list);
-	kfree(t);
-	return 0;
-}
-
-/*
- * Functions to switch between Radio and TV
- *
- * A few cards have a separate I2C tuner for radio. Those routines
- * take care of switching between TV/Radio mode, filtering only the
- * commands that apply to the Radio or TV tuner.
- */
-
-/**
- * check_mode - Verify if tuner supports the requested mode
- * @t: a pointer to the module's internal struct_tuner
- *
- * This function checks if the tuner is capable of tuning analog TV,
- * digital TV or radio, depending on what the caller wants. If the
- * tuner can't support that mode, it returns -EINVAL. Otherwise, it
- * returns 0.
- * This function is needed for boards that have a separate tuner for
- * radio (like devices with tea5767).
- * NOTE: mt20xx uses V4L2_TUNER_DIGITAL_TV and calls set_tv_freq to
- *       select a TV frequency. So, t_mode = T_ANALOG_TV could actually
- *	 be used to represent a Digital TV too.
- */
-static inline int check_mode(struct tuner *t, enum v4l2_tuner_type mode)
-{
-	int t_mode;
-	if (mode == V4L2_TUNER_RADIO)
-		t_mode = T_RADIO;
-	else
-		t_mode = T_ANALOG_TV;
-
-	if ((t_mode & t->mode_mask) == 0)
-		return -EINVAL;
-
-	return 0;
-}
-
-/**
- * set_mode - Switch tuner to other mode.
- * @t:		a pointer to the module's internal struct_tuner
- * @mode:	enum v4l2_type (radio or TV)
- *
- * If tuner doesn't support the needed mode (radio or TV), prints a
- * debug message and returns -EINVAL, changing its state to standby.
- * Otherwise, changes the mode and returns 0.
- */
-static int set_mode(struct tuner *t, enum v4l2_tuner_type mode)
-{
-	struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops;
-
-	if (mode != t->mode) {
-		if (check_mode(t, mode) == -EINVAL) {
-			tuner_dbg("Tuner doesn't support mode %d. "
-				  "Putting tuner to sleep\n", mode);
-			t->standby = true;
-			if (analog_ops->standby)
-				analog_ops->standby(&t->fe);
-			return -EINVAL;
-		}
-		t->mode = mode;
-		tuner_dbg("Changing to mode %d\n", mode);
-	}
-	return 0;
-}
-
-/**
- * set_freq - Set the tuner to the desired frequency.
- * @t:		a pointer to the module's internal struct_tuner
- * @freq:	frequency to set (0 means to use the current frequency)
- */
-static void set_freq(struct tuner *t, unsigned int freq)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(&t->sd);
-
-	if (t->mode == V4L2_TUNER_RADIO) {
-		if (!freq)
-			freq = t->radio_freq;
-		set_radio_freq(client, freq);
-	} else {
-		if (!freq)
-			freq = t->tv_freq;
-		set_tv_freq(client, freq);
-	}
-}
-
-/*
- * Functions that are specific for TV mode
- */
-
-/**
- * set_tv_freq - Set tuner frequency,  freq in Units of 62.5 kHz = 1/16MHz
- *
- * @c:	i2c_client descriptor
- * @freq: frequency
- */
-static void set_tv_freq(struct i2c_client *c, unsigned int freq)
-{
-	struct tuner *t = to_tuner(i2c_get_clientdata(c));
-	struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops;
-
-	struct analog_parameters params = {
-		.mode      = t->mode,
-		.audmode   = t->audmode,
-		.std       = t->std
-	};
-
-	if (t->type == UNSET) {
-		tuner_warn("tuner type not set\n");
-		return;
-	}
-	if (NULL == analog_ops->set_params) {
-		tuner_warn("Tuner has no way to set tv freq\n");
-		return;
-	}
-	if (freq < tv_range[0] * 16 || freq > tv_range[1] * 16) {
-		tuner_dbg("TV freq (%d.%02d) out of range (%d-%d)\n",
-			   freq / 16, freq % 16 * 100 / 16, tv_range[0],
-			   tv_range[1]);
-		/* V4L2 spec: if the freq is not possible then the closest
-		   possible value should be selected */
-		if (freq < tv_range[0] * 16)
-			freq = tv_range[0] * 16;
-		else
-			freq = tv_range[1] * 16;
-	}
-	params.frequency = freq;
-	tuner_dbg("tv freq set to %d.%02d\n",
-			freq / 16, freq % 16 * 100 / 16);
-	t->tv_freq = freq;
-	t->standby = false;
-
-	analog_ops->set_params(&t->fe, &params);
-}
-
-/**
- * tuner_fixup_std - force a given video standard variant
- *
- * @t: tuner internal struct
- * @std:	TV standard
- *
- * A few devices or drivers have problem to detect some standard variations.
- * On other operational systems, the drivers generally have a per-country
- * code, and some logic to apply per-country hacks. V4L2 API doesn't provide
- * such hacks. Instead, it relies on a proper video standard selection from
- * the userspace application. However, as some apps are buggy, not allowing
- * to distinguish all video standard variations, a modprobe parameter can
- * be used to force a video standard match.
- */
-static v4l2_std_id tuner_fixup_std(struct tuner *t, v4l2_std_id std)
-{
-	if (pal[0] != '-' && (std & V4L2_STD_PAL) == V4L2_STD_PAL) {
-		switch (pal[0]) {
-		case '6':
-			return V4L2_STD_PAL_60;
-		case 'b':
-		case 'B':
-		case 'g':
-		case 'G':
-			return V4L2_STD_PAL_BG;
-		case 'i':
-		case 'I':
-			return V4L2_STD_PAL_I;
-		case 'd':
-		case 'D':
-		case 'k':
-		case 'K':
-			return V4L2_STD_PAL_DK;
-		case 'M':
-		case 'm':
-			return V4L2_STD_PAL_M;
-		case 'N':
-		case 'n':
-			if (pal[1] == 'c' || pal[1] == 'C')
-				return V4L2_STD_PAL_Nc;
-			return V4L2_STD_PAL_N;
-		default:
-			tuner_warn("pal= argument not recognised\n");
-			break;
-		}
-	}
-	if (secam[0] != '-' && (std & V4L2_STD_SECAM) == V4L2_STD_SECAM) {
-		switch (secam[0]) {
-		case 'b':
-		case 'B':
-		case 'g':
-		case 'G':
-		case 'h':
-		case 'H':
-			return V4L2_STD_SECAM_B |
-			       V4L2_STD_SECAM_G |
-			       V4L2_STD_SECAM_H;
-		case 'd':
-		case 'D':
-		case 'k':
-		case 'K':
-			return V4L2_STD_SECAM_DK;
-		case 'l':
-		case 'L':
-			if ((secam[1] == 'C') || (secam[1] == 'c'))
-				return V4L2_STD_SECAM_LC;
-			return V4L2_STD_SECAM_L;
-		default:
-			tuner_warn("secam= argument not recognised\n");
-			break;
-		}
-	}
-
-	if (ntsc[0] != '-' && (std & V4L2_STD_NTSC) == V4L2_STD_NTSC) {
-		switch (ntsc[0]) {
-		case 'm':
-		case 'M':
-			return V4L2_STD_NTSC_M;
-		case 'j':
-		case 'J':
-			return V4L2_STD_NTSC_M_JP;
-		case 'k':
-		case 'K':
-			return V4L2_STD_NTSC_M_KR;
-		default:
-			tuner_info("ntsc= argument not recognised\n");
-			break;
-		}
-	}
-	return std;
-}
-
-/*
- * Functions that are specific for Radio mode
- */
-
-/**
- * set_radio_freq - Set tuner frequency,  freq in Units of 62.5 Hz  = 1/16kHz
- *
- * @c:	i2c_client descriptor
- * @freq: frequency
- */
-static void set_radio_freq(struct i2c_client *c, unsigned int freq)
-{
-	struct tuner *t = to_tuner(i2c_get_clientdata(c));
-	struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops;
-
-	struct analog_parameters params = {
-		.mode      = t->mode,
-		.audmode   = t->audmode,
-		.std       = t->std
-	};
-
-	if (t->type == UNSET) {
-		tuner_warn("tuner type not set\n");
-		return;
-	}
-	if (NULL == analog_ops->set_params) {
-		tuner_warn("tuner has no way to set radio frequency\n");
-		return;
-	}
-	if (freq < radio_range[0] * 16000 || freq > radio_range[1] * 16000) {
-		tuner_dbg("radio freq (%d.%02d) out of range (%d-%d)\n",
-			   freq / 16000, freq % 16000 * 100 / 16000,
-			   radio_range[0], radio_range[1]);
-		/* V4L2 spec: if the freq is not possible then the closest
-		   possible value should be selected */
-		if (freq < radio_range[0] * 16000)
-			freq = radio_range[0] * 16000;
-		else
-			freq = radio_range[1] * 16000;
-	}
-	params.frequency = freq;
-	tuner_dbg("radio freq set to %d.%02d\n",
-			freq / 16000, freq % 16000 * 100 / 16000);
-	t->radio_freq = freq;
-	t->standby = false;
-
-	analog_ops->set_params(&t->fe, &params);
-}
-
-/*
- * Debug function for reporting tuner status to userspace
- */
-
-/**
- * tuner_status - Dumps the current tuner status at dmesg
- * @fe: pointer to struct dvb_frontend
- *
- * This callback is used only for driver debug purposes, answering to
- * VIDIOC_LOG_STATUS. No changes should happen on this call.
- */
-static void tuner_status(struct dvb_frontend *fe)
-{
-	struct tuner *t = fe->analog_demod_priv;
-	unsigned long freq, freq_fraction;
-	struct dvb_tuner_ops *fe_tuner_ops = &fe->ops.tuner_ops;
-	struct analog_demod_ops *analog_ops = &fe->ops.analog_ops;
-	const char *p;
-
-	switch (t->mode) {
-	case V4L2_TUNER_RADIO:
-		p = "radio";
-		break;
-	case V4L2_TUNER_DIGITAL_TV: /* Used by mt20xx */
-		p = "digital TV";
-		break;
-	case V4L2_TUNER_ANALOG_TV:
-	default:
-		p = "analog TV";
-		break;
-	}
-	if (t->mode == V4L2_TUNER_RADIO) {
-		freq = t->radio_freq / 16000;
-		freq_fraction = (t->radio_freq % 16000) * 100 / 16000;
-	} else {
-		freq = t->tv_freq / 16;
-		freq_fraction = (t->tv_freq % 16) * 100 / 16;
-	}
-	tuner_info("Tuner mode:      %s%s\n", p,
-		   t->standby ? " on standby mode" : "");
-	tuner_info("Frequency:       %lu.%02lu MHz\n", freq, freq_fraction);
-	tuner_info("Standard:        0x%08lx\n", (unsigned long)t->std);
-	if (t->mode != V4L2_TUNER_RADIO)
-		return;
-	if (fe_tuner_ops->get_status) {
-		u32 tuner_status;
-
-		fe_tuner_ops->get_status(&t->fe, &tuner_status);
-		if (tuner_status & TUNER_STATUS_LOCKED)
-			tuner_info("Tuner is locked.\n");
-		if (tuner_status & TUNER_STATUS_STEREO)
-			tuner_info("Stereo:          yes\n");
-	}
-	if (analog_ops->has_signal)
-		tuner_info("Signal strength: %d\n",
-			   analog_ops->has_signal(fe));
-}
-
-/*
- * Function to splicitly change mode to radio. Probably not needed anymore
- */
-
-static int tuner_s_radio(struct v4l2_subdev *sd)
-{
-	struct tuner *t = to_tuner(sd);
-
-	if (set_mode(t, V4L2_TUNER_RADIO) == 0)
-		set_freq(t, 0);
-	return 0;
-}
-
-/*
- * Tuner callbacks to handle userspace ioctl's
- */
-
-/**
- * tuner_s_power - controls the power state of the tuner
- * @sd: pointer to struct v4l2_subdev
- * @on: a zero value puts the tuner to sleep, non-zero wakes it up
- */
-static int tuner_s_power(struct v4l2_subdev *sd, int on)
-{
-	struct tuner *t = to_tuner(sd);
-	struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops;
-
-	if (on) {
-		if (t->standby && set_mode(t, t->mode) == 0) {
-			tuner_dbg("Waking up tuner\n");
-			set_freq(t, 0);
-		}
-		return 0;
-	}
-
-	tuner_dbg("Putting tuner to sleep\n");
-	t->standby = true;
-	if (analog_ops->standby)
-		analog_ops->standby(&t->fe);
-	return 0;
-}
-
-static int tuner_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
-{
-	struct tuner *t = to_tuner(sd);
-
-	if (set_mode(t, V4L2_TUNER_ANALOG_TV))
-		return 0;
-
-	t->std = tuner_fixup_std(t, std);
-	if (t->std != std)
-		tuner_dbg("Fixup standard %llx to %llx\n", std, t->std);
-	set_freq(t, 0);
-	return 0;
-}
-
-static int tuner_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f)
-{
-	struct tuner *t = to_tuner(sd);
-
-	if (set_mode(t, f->type) == 0)
-		set_freq(t, f->frequency);
-	return 0;
-}
-
-/**
- * tuner_g_frequency - Get the tuned frequency for the tuner
- * @sd: pointer to struct v4l2_subdev
- * @f: pointer to struct v4l2_frequency
- *
- * At return, the structure f will be filled with tuner frequency
- * if the tuner matches the f->type.
- * Note: f->type should be initialized before calling it.
- * This is done by either video_ioctl2 or by the bridge driver.
- */
-static int tuner_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f)
-{
-	struct tuner *t = to_tuner(sd);
-	struct dvb_tuner_ops *fe_tuner_ops = &t->fe.ops.tuner_ops;
-
-	if (check_mode(t, f->type) == -EINVAL)
-		return 0;
-	if (f->type == t->mode && fe_tuner_ops->get_frequency && !t->standby) {
-		u32 abs_freq;
-
-		fe_tuner_ops->get_frequency(&t->fe, &abs_freq);
-		f->frequency = (V4L2_TUNER_RADIO == t->mode) ?
-			DIV_ROUND_CLOSEST(abs_freq * 2, 125) :
-			DIV_ROUND_CLOSEST(abs_freq, 62500);
-	} else {
-		f->frequency = (V4L2_TUNER_RADIO == f->type) ?
-			t->radio_freq : t->tv_freq;
-	}
-	return 0;
-}
-
-/**
- * tuner_g_tuner - Fill in tuner information
- * @sd: pointer to struct v4l2_subdev
- * @vt: pointer to struct v4l2_tuner
- *
- * At return, the structure vt will be filled with tuner information
- * if the tuner matches vt->type.
- * Note: vt->type should be initialized before calling it.
- * This is done by either video_ioctl2 or by the bridge driver.
- */
-static int tuner_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
-{
-	struct tuner *t = to_tuner(sd);
-	struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops;
-	struct dvb_tuner_ops *fe_tuner_ops = &t->fe.ops.tuner_ops;
-
-	if (check_mode(t, vt->type) == -EINVAL)
-		return 0;
-	if (vt->type == t->mode && analog_ops->get_afc)
-		vt->afc = analog_ops->get_afc(&t->fe);
-	if (analog_ops->has_signal)
-		vt->signal = analog_ops->has_signal(&t->fe);
-	if (vt->type != V4L2_TUNER_RADIO) {
-		vt->capability |= V4L2_TUNER_CAP_NORM;
-		vt->rangelow = tv_range[0] * 16;
-		vt->rangehigh = tv_range[1] * 16;
-		return 0;
-	}
-
-	/* radio mode */
-	if (vt->type == t->mode) {
-		vt->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
-		if (fe_tuner_ops->get_status) {
-			u32 tuner_status;
-
-			fe_tuner_ops->get_status(&t->fe, &tuner_status);
-			vt->rxsubchans =
-				(tuner_status & TUNER_STATUS_STEREO) ?
-				V4L2_TUNER_SUB_STEREO :
-				V4L2_TUNER_SUB_MONO;
-		}
-		vt->audmode = t->audmode;
-	}
-	vt->capability |= V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
-	vt->rangelow = radio_range[0] * 16000;
-	vt->rangehigh = radio_range[1] * 16000;
-
-	return 0;
-}
-
-/**
- * tuner_s_tuner - Set the tuner's audio mode
- * @sd: pointer to struct v4l2_subdev
- * @vt: pointer to struct v4l2_tuner
- *
- * Sets the audio mode if the tuner matches vt->type.
- * Note: vt->type should be initialized before calling it.
- * This is done by either video_ioctl2 or by the bridge driver.
- */
-static int tuner_s_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
-{
-	struct tuner *t = to_tuner(sd);
-
-	if (set_mode(t, vt->type))
-		return 0;
-
-	if (t->mode == V4L2_TUNER_RADIO)
-		t->audmode = vt->audmode;
-	set_freq(t, 0);
-
-	return 0;
-}
-
-static int tuner_log_status(struct v4l2_subdev *sd)
-{
-	struct tuner *t = to_tuner(sd);
-	struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops;
-
-	if (analog_ops->tuner_status)
-		analog_ops->tuner_status(&t->fe);
-	return 0;
-}
-
-#ifdef CONFIG_PM_SLEEP
-static int tuner_suspend(struct device *dev)
-{
-	struct i2c_client *c = to_i2c_client(dev);
-	struct tuner *t = to_tuner(i2c_get_clientdata(c));
-	struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops;
-
-	tuner_dbg("suspend\n");
-
-	if (!t->standby && analog_ops->standby)
-		analog_ops->standby(&t->fe);
-
-	return 0;
-}
-
-static int tuner_resume(struct device *dev)
-{
-	struct i2c_client *c = to_i2c_client(dev);
-	struct tuner *t = to_tuner(i2c_get_clientdata(c));
-
-	tuner_dbg("resume\n");
-
-	if (!t->standby)
-		if (set_mode(t, t->mode) == 0)
-			set_freq(t, 0);
-
-	return 0;
-}
-#endif
-
-static int tuner_command(struct i2c_client *client, unsigned cmd, void *arg)
-{
-	struct v4l2_subdev *sd = i2c_get_clientdata(client);
-
-	/* TUNER_SET_CONFIG is still called by tuner-simple.c, so we have
-	   to handle it here.
-	   There must be a better way of doing this... */
-	switch (cmd) {
-	case TUNER_SET_CONFIG:
-		return tuner_s_config(sd, arg);
-	}
-	return -ENOIOCTLCMD;
-}
-
-/*
- * Callback structs
- */
-
-static const struct v4l2_subdev_core_ops tuner_core_ops = {
-	.log_status = tuner_log_status,
-	.s_std = tuner_s_std,
-	.s_power = tuner_s_power,
-};
-
-static const struct v4l2_subdev_tuner_ops tuner_tuner_ops = {
-	.s_radio = tuner_s_radio,
-	.g_tuner = tuner_g_tuner,
-	.s_tuner = tuner_s_tuner,
-	.s_frequency = tuner_s_frequency,
-	.g_frequency = tuner_g_frequency,
-	.s_type_addr = tuner_s_type_addr,
-	.s_config = tuner_s_config,
-};
-
-static const struct v4l2_subdev_ops tuner_ops = {
-	.core = &tuner_core_ops,
-	.tuner = &tuner_tuner_ops,
-};
-
-/*
- * I2C structs and module init functions
- */
-
-static const struct dev_pm_ops tuner_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(tuner_suspend, tuner_resume)
-};
-
-static const struct i2c_device_id tuner_id[] = {
-	{ "tuner", }, /* autodetect */
-	{ }
-};
-MODULE_DEVICE_TABLE(i2c, tuner_id);
-
-static struct i2c_driver tuner_driver = {
-	.driver = {
-		.owner	= THIS_MODULE,
-		.name	= "tuner",
-		.pm	= &tuner_pm_ops,
-	},
-	.probe		= tuner_probe,
-	.remove		= tuner_remove,
-	.command	= tuner_command,
-	.id_table	= tuner_id,
-};
-
-module_i2c_driver(tuner_driver);
-
-MODULE_DESCRIPTION("device driver for various TV and TV+FM radio tuners");
-MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer");
-MODULE_LICENSE("GPL");
diff --git a/drivers/media/video/v4l2-common.c b/drivers/media/video/v4l2-common.c
deleted file mode 100644
index 105f88cdb9d6..000000000000
--- a/drivers/media/video/v4l2-common.c
+++ /dev/null
@@ -1,623 +0,0 @@
-/*
- *	Video for Linux Two
- *
- *	A generic video device interface for the LINUX operating system
- *	using a set of device structures/vectors for low level operations.
- *
- *	This file replaces the videodev.c file that comes with the
- *	regular kernel distribution.
- *
- *	This program is free software; you can redistribute it and/or
- *	modify it under the terms of the GNU General Public License
- *	as published by the Free Software Foundation; either version
- *	2 of the License, or (at your option) any later version.
- *
- * Author:	Bill Dirks <bill@thedirks.org>
- *		based on code by Alan Cox, <alan@cymru.net>
- *
- */
-
-/*
- * Video capture interface for Linux
- *
- *	A generic video device interface for the LINUX operating system
- *	using a set of device structures/vectors for low level operations.
- *
- *		This program is free software; you can redistribute it and/or
- *		modify it under the terms of the GNU General Public License
- *		as published by the Free Software Foundation; either version
- *		2 of the License, or (at your option) any later version.
- *
- * Author:	Alan Cox, <alan@lxorguk.ukuu.org.uk>
- *
- * Fixes:
- */
-
-/*
- * Video4linux 1/2 integration by Justin Schoeman
- * <justin@suntiger.ee.up.ac.za>
- * 2.4 PROCFS support ported from 2.4 kernels by
- *  Iñaki García Etxebarria <garetxe@euskalnet.net>
- * Makefile fix by "W. Michael Petullo" <mike@flyn.org>
- * 2.4 devfs support ported from 2.4 kernels by
- *  Dan Merillat <dan@merillat.org>
- * Added Gerd Knorrs v4l1 enhancements (Justin Schoeman)
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/i2c.h>
-#if defined(CONFIG_SPI)
-#include <linux/spi/spi.h>
-#endif
-#include <asm/uaccess.h>
-#include <asm/pgtable.h>
-#include <asm/io.h>
-#include <asm/div64.h>
-#include <media/v4l2-common.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-ctrls.h>
-#include <media/v4l2-chip-ident.h>
-
-#include <linux/videodev2.h>
-
-MODULE_AUTHOR("Bill Dirks, Justin Schoeman, Gerd Knorr");
-MODULE_DESCRIPTION("misc helper functions for v4l2 device drivers");
-MODULE_LICENSE("GPL");
-
-/*
- *
- *	V 4 L 2   D R I V E R   H E L P E R   A P I
- *
- */
-
-/*
- *  Video Standard Operations (contributed by Michael Schimek)
- */
-
-/* Helper functions for control handling			     */
-
-/* Check for correctness of the ctrl's value based on the data from
-   struct v4l2_queryctrl and the available menu items. Note that
-   menu_items may be NULL, in that case it is ignored. */
-int v4l2_ctrl_check(struct v4l2_ext_control *ctrl, struct v4l2_queryctrl *qctrl,
-		const char * const *menu_items)
-{
-	if (qctrl->flags & V4L2_CTRL_FLAG_DISABLED)
-		return -EINVAL;
-	if (qctrl->flags & V4L2_CTRL_FLAG_GRABBED)
-		return -EBUSY;
-	if (qctrl->type == V4L2_CTRL_TYPE_STRING)
-		return 0;
-	if (qctrl->type == V4L2_CTRL_TYPE_BUTTON ||
-	    qctrl->type == V4L2_CTRL_TYPE_INTEGER64 ||
-	    qctrl->type == V4L2_CTRL_TYPE_CTRL_CLASS)
-		return 0;
-	if (ctrl->value < qctrl->minimum || ctrl->value > qctrl->maximum)
-		return -ERANGE;
-	if (qctrl->type == V4L2_CTRL_TYPE_MENU && menu_items != NULL) {
-		if (menu_items[ctrl->value] == NULL ||
-		    menu_items[ctrl->value][0] == '\0')
-			return -EINVAL;
-	}
-	if (qctrl->type == V4L2_CTRL_TYPE_BITMASK &&
-			(ctrl->value & ~qctrl->maximum))
-		return -ERANGE;
-	return 0;
-}
-EXPORT_SYMBOL(v4l2_ctrl_check);
-
-/* Fill in a struct v4l2_queryctrl */
-int v4l2_ctrl_query_fill(struct v4l2_queryctrl *qctrl, s32 min, s32 max, s32 step, s32 def)
-{
-	const char *name;
-
-	v4l2_ctrl_fill(qctrl->id, &name, &qctrl->type,
-		       &min, &max, &step, &def, &qctrl->flags);
-
-	if (name == NULL)
-		return -EINVAL;
-
-	qctrl->minimum = min;
-	qctrl->maximum = max;
-	qctrl->step = step;
-	qctrl->default_value = def;
-	qctrl->reserved[0] = qctrl->reserved[1] = 0;
-	strlcpy(qctrl->name, name, sizeof(qctrl->name));
-	return 0;
-}
-EXPORT_SYMBOL(v4l2_ctrl_query_fill);
-
-/* Fill in a struct v4l2_querymenu based on the struct v4l2_queryctrl and
-   the menu. The qctrl pointer may be NULL, in which case it is ignored.
-   If menu_items is NULL, then the menu items are retrieved using
-   v4l2_ctrl_get_menu. */
-int v4l2_ctrl_query_menu(struct v4l2_querymenu *qmenu, struct v4l2_queryctrl *qctrl,
-	       const char * const *menu_items)
-{
-	int i;
-
-	qmenu->reserved = 0;
-	if (menu_items == NULL)
-		menu_items = v4l2_ctrl_get_menu(qmenu->id);
-	if (menu_items == NULL ||
-	    (qctrl && (qmenu->index < qctrl->minimum || qmenu->index > qctrl->maximum)))
-		return -EINVAL;
-	for (i = 0; i < qmenu->index && menu_items[i]; i++) ;
-	if (menu_items[i] == NULL || menu_items[i][0] == '\0')
-		return -EINVAL;
-	strlcpy(qmenu->name, menu_items[qmenu->index], sizeof(qmenu->name));
-	return 0;
-}
-EXPORT_SYMBOL(v4l2_ctrl_query_menu);
-
-/* Fill in a struct v4l2_querymenu based on the specified array of valid
-   menu items (terminated by V4L2_CTRL_MENU_IDS_END).
-   Use this if there are 'holes' in the list of valid menu items. */
-int v4l2_ctrl_query_menu_valid_items(struct v4l2_querymenu *qmenu, const u32 *ids)
-{
-	const char * const *menu_items = v4l2_ctrl_get_menu(qmenu->id);
-
-	qmenu->reserved = 0;
-	if (menu_items == NULL || ids == NULL)
-		return -EINVAL;
-	while (*ids != V4L2_CTRL_MENU_IDS_END) {
-		if (*ids++ == qmenu->index) {
-			strlcpy(qmenu->name, menu_items[qmenu->index],
-					sizeof(qmenu->name));
-			return 0;
-		}
-	}
-	return -EINVAL;
-}
-EXPORT_SYMBOL(v4l2_ctrl_query_menu_valid_items);
-
-/* ctrl_classes points to an array of u32 pointers, the last element is
-   a NULL pointer. Each u32 array is a 0-terminated array of control IDs.
-   Each array must be sorted low to high and belong to the same control
-   class. The array of u32 pointers must also be sorted, from low class IDs
-   to high class IDs.
-
-   This function returns the first ID that follows after the given ID.
-   When no more controls are available 0 is returned. */
-u32 v4l2_ctrl_next(const u32 * const * ctrl_classes, u32 id)
-{
-	u32 ctrl_class = V4L2_CTRL_ID2CLASS(id);
-	const u32 *pctrl;
-
-	if (ctrl_classes == NULL)
-		return 0;
-
-	/* if no query is desired, then check if the ID is part of ctrl_classes */
-	if ((id & V4L2_CTRL_FLAG_NEXT_CTRL) == 0) {
-		/* find class */
-		while (*ctrl_classes && V4L2_CTRL_ID2CLASS(**ctrl_classes) != ctrl_class)
-			ctrl_classes++;
-		if (*ctrl_classes == NULL)
-			return 0;
-		pctrl = *ctrl_classes;
-		/* find control ID */
-		while (*pctrl && *pctrl != id) pctrl++;
-		return *pctrl ? id : 0;
-	}
-	id &= V4L2_CTRL_ID_MASK;
-	id++;	/* select next control */
-	/* find first class that matches (or is greater than) the class of
-	   the ID */
-	while (*ctrl_classes && V4L2_CTRL_ID2CLASS(**ctrl_classes) < ctrl_class)
-		ctrl_classes++;
-	/* no more classes */
-	if (*ctrl_classes == NULL)
-		return 0;
-	pctrl = *ctrl_classes;
-	/* find first ctrl within the class that is >= ID */
-	while (*pctrl && *pctrl < id) pctrl++;
-	if (*pctrl)
-		return *pctrl;
-	/* we are at the end of the controls of the current class. */
-	/* continue with next class if available */
-	ctrl_classes++;
-	if (*ctrl_classes == NULL)
-		return 0;
-	return **ctrl_classes;
-}
-EXPORT_SYMBOL(v4l2_ctrl_next);
-
-int v4l2_chip_match_host(const struct v4l2_dbg_match *match)
-{
-	switch (match->type) {
-	case V4L2_CHIP_MATCH_HOST:
-		return match->addr == 0;
-	default:
-		return 0;
-	}
-}
-EXPORT_SYMBOL(v4l2_chip_match_host);
-
-#if defined(CONFIG_I2C) || (defined(CONFIG_I2C_MODULE) && defined(MODULE))
-int v4l2_chip_match_i2c_client(struct i2c_client *c, const struct v4l2_dbg_match *match)
-{
-	int len;
-
-	if (c == NULL || match == NULL)
-		return 0;
-
-	switch (match->type) {
-	case V4L2_CHIP_MATCH_I2C_DRIVER:
-		if (c->driver == NULL || c->driver->driver.name == NULL)
-			return 0;
-		len = strlen(c->driver->driver.name);
-		/* legacy drivers have a ' suffix, don't try to match that */
-		if (len && c->driver->driver.name[len - 1] == '\'')
-			len--;
-		return len && !strncmp(c->driver->driver.name, match->name, len);
-	case V4L2_CHIP_MATCH_I2C_ADDR:
-		return c->addr == match->addr;
-	default:
-		return 0;
-	}
-}
-EXPORT_SYMBOL(v4l2_chip_match_i2c_client);
-
-int v4l2_chip_ident_i2c_client(struct i2c_client *c, struct v4l2_dbg_chip_ident *chip,
-		u32 ident, u32 revision)
-{
-	if (!v4l2_chip_match_i2c_client(c, &chip->match))
-		return 0;
-	if (chip->ident == V4L2_IDENT_NONE) {
-		chip->ident = ident;
-		chip->revision = revision;
-	}
-	else {
-		chip->ident = V4L2_IDENT_AMBIGUOUS;
-		chip->revision = 0;
-	}
-	return 0;
-}
-EXPORT_SYMBOL(v4l2_chip_ident_i2c_client);
-
-/* ----------------------------------------------------------------- */
-
-/* I2C Helper functions */
-
-
-void v4l2_i2c_subdev_init(struct v4l2_subdev *sd, struct i2c_client *client,
-		const struct v4l2_subdev_ops *ops)
-{
-	v4l2_subdev_init(sd, ops);
-	sd->flags |= V4L2_SUBDEV_FL_IS_I2C;
-	/* the owner is the same as the i2c_client's driver owner */
-	sd->owner = client->driver->driver.owner;
-	/* i2c_client and v4l2_subdev point to one another */
-	v4l2_set_subdevdata(sd, client);
-	i2c_set_clientdata(client, sd);
-	/* initialize name */
-	snprintf(sd->name, sizeof(sd->name), "%s %d-%04x",
-		client->driver->driver.name, i2c_adapter_id(client->adapter),
-		client->addr);
-}
-EXPORT_SYMBOL_GPL(v4l2_i2c_subdev_init);
-
-
-
-/* Load an i2c sub-device. */
-struct v4l2_subdev *v4l2_i2c_new_subdev_board(struct v4l2_device *v4l2_dev,
-		struct i2c_adapter *adapter, struct i2c_board_info *info,
-		const unsigned short *probe_addrs)
-{
-	struct v4l2_subdev *sd = NULL;
-	struct i2c_client *client;
-
-	BUG_ON(!v4l2_dev);
-
-	request_module(I2C_MODULE_PREFIX "%s", info->type);
-
-	/* Create the i2c client */
-	if (info->addr == 0 && probe_addrs)
-		client = i2c_new_probed_device(adapter, info, probe_addrs,
-					       NULL);
-	else
-		client = i2c_new_device(adapter, info);
-
-	/* Note: by loading the module first we are certain that c->driver
-	   will be set if the driver was found. If the module was not loaded
-	   first, then the i2c core tries to delay-load the module for us,
-	   and then c->driver is still NULL until the module is finally
-	   loaded. This delay-load mechanism doesn't work if other drivers
-	   want to use the i2c device, so explicitly loading the module
-	   is the best alternative. */
-	if (client == NULL || client->driver == NULL)
-		goto error;
-
-	/* Lock the module so we can safely get the v4l2_subdev pointer */
-	if (!try_module_get(client->driver->driver.owner))
-		goto error;
-	sd = i2c_get_clientdata(client);
-
-	/* Register with the v4l2_device which increases the module's
-	   use count as well. */
-	if (v4l2_device_register_subdev(v4l2_dev, sd))
-		sd = NULL;
-	/* Decrease the module use count to match the first try_module_get. */
-	module_put(client->driver->driver.owner);
-
-error:
-	/* If we have a client but no subdev, then something went wrong and
-	   we must unregister the client. */
-	if (client && sd == NULL)
-		i2c_unregister_device(client);
-	return sd;
-}
-EXPORT_SYMBOL_GPL(v4l2_i2c_new_subdev_board);
-
-struct v4l2_subdev *v4l2_i2c_new_subdev(struct v4l2_device *v4l2_dev,
-		struct i2c_adapter *adapter, const char *client_type,
-		u8 addr, const unsigned short *probe_addrs)
-{
-	struct i2c_board_info info;
-
-	/* Setup the i2c board info with the device type and
-	   the device address. */
-	memset(&info, 0, sizeof(info));
-	strlcpy(info.type, client_type, sizeof(info.type));
-	info.addr = addr;
-
-	return v4l2_i2c_new_subdev_board(v4l2_dev, adapter, &info, probe_addrs);
-}
-EXPORT_SYMBOL_GPL(v4l2_i2c_new_subdev);
-
-/* Return i2c client address of v4l2_subdev. */
-unsigned short v4l2_i2c_subdev_addr(struct v4l2_subdev *sd)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return client ? client->addr : I2C_CLIENT_END;
-}
-EXPORT_SYMBOL_GPL(v4l2_i2c_subdev_addr);
-
-/* Return a list of I2C tuner addresses to probe. Use only if the tuner
-   addresses are unknown. */
-const unsigned short *v4l2_i2c_tuner_addrs(enum v4l2_i2c_tuner_type type)
-{
-	static const unsigned short radio_addrs[] = {
-#if defined(CONFIG_MEDIA_TUNER_TEA5761) || defined(CONFIG_MEDIA_TUNER_TEA5761_MODULE)
-		0x10,
-#endif
-		0x60,
-		I2C_CLIENT_END
-	};
-	static const unsigned short demod_addrs[] = {
-		0x42, 0x43, 0x4a, 0x4b,
-		I2C_CLIENT_END
-	};
-	static const unsigned short tv_addrs[] = {
-		0x42, 0x43, 0x4a, 0x4b,		/* tda8290 */
-		0x60, 0x61, 0x62, 0x63, 0x64,
-		I2C_CLIENT_END
-	};
-
-	switch (type) {
-	case ADDRS_RADIO:
-		return radio_addrs;
-	case ADDRS_DEMOD:
-		return demod_addrs;
-	case ADDRS_TV:
-		return tv_addrs;
-	case ADDRS_TV_WITH_DEMOD:
-		return tv_addrs + 4;
-	}
-	return NULL;
-}
-EXPORT_SYMBOL_GPL(v4l2_i2c_tuner_addrs);
-
-#endif /* defined(CONFIG_I2C) */
-
-#if defined(CONFIG_SPI)
-
-/* Load an spi sub-device. */
-
-void v4l2_spi_subdev_init(struct v4l2_subdev *sd, struct spi_device *spi,
-		const struct v4l2_subdev_ops *ops)
-{
-	v4l2_subdev_init(sd, ops);
-	sd->flags |= V4L2_SUBDEV_FL_IS_SPI;
-	/* the owner is the same as the spi_device's driver owner */
-	sd->owner = spi->dev.driver->owner;
-	/* spi_device and v4l2_subdev point to one another */
-	v4l2_set_subdevdata(sd, spi);
-	spi_set_drvdata(spi, sd);
-	/* initialize name */
-	strlcpy(sd->name, spi->dev.driver->name, sizeof(sd->name));
-}
-EXPORT_SYMBOL_GPL(v4l2_spi_subdev_init);
-
-struct v4l2_subdev *v4l2_spi_new_subdev(struct v4l2_device *v4l2_dev,
-		struct spi_master *master, struct spi_board_info *info)
-{
-	struct v4l2_subdev *sd = NULL;
-	struct spi_device *spi = NULL;
-
-	BUG_ON(!v4l2_dev);
-
-	if (info->modalias)
-		request_module(info->modalias);
-
-	spi = spi_new_device(master, info);
-
-	if (spi == NULL || spi->dev.driver == NULL)
-		goto error;
-
-	if (!try_module_get(spi->dev.driver->owner))
-		goto error;
-
-	sd = spi_get_drvdata(spi);
-
-	/* Register with the v4l2_device which increases the module's
-	   use count as well. */
-	if (v4l2_device_register_subdev(v4l2_dev, sd))
-		sd = NULL;
-
-	/* Decrease the module use count to match the first try_module_get. */
-	module_put(spi->dev.driver->owner);
-
-error:
-	/* If we have a client but no subdev, then something went wrong and
-	   we must unregister the client. */
-	if (spi && sd == NULL)
-		spi_unregister_device(spi);
-
-	return sd;
-}
-EXPORT_SYMBOL_GPL(v4l2_spi_new_subdev);
-
-#endif /* defined(CONFIG_SPI) */
-
-/* Clamp x to be between min and max, aligned to a multiple of 2^align.  min
- * and max don't have to be aligned, but there must be at least one valid
- * value.  E.g., min=17,max=31,align=4 is not allowed as there are no multiples
- * of 16 between 17 and 31.  */
-static unsigned int clamp_align(unsigned int x, unsigned int min,
-				unsigned int max, unsigned int align)
-{
-	/* Bits that must be zero to be aligned */
-	unsigned int mask = ~((1 << align) - 1);
-
-	/* Round to nearest aligned value */
-	if (align)
-		x = (x + (1 << (align - 1))) & mask;
-
-	/* Clamp to aligned value of min and max */
-	if (x < min)
-		x = (min + ~mask) & mask;
-	else if (x > max)
-		x = max & mask;
-
-	return x;
-}
-
-/* Bound an image to have a width between wmin and wmax, and height between
- * hmin and hmax, inclusive.  Additionally, the width will be a multiple of
- * 2^walign, the height will be a multiple of 2^halign, and the overall size
- * (width*height) will be a multiple of 2^salign.  The image may be shrunk
- * or enlarged to fit the alignment constraints.
- *
- * The width or height maximum must not be smaller than the corresponding
- * minimum.  The alignments must not be so high there are no possible image
- * sizes within the allowed bounds.  wmin and hmin must be at least 1
- * (don't use 0).  If you don't care about a certain alignment, specify 0,
- * as 2^0 is 1 and one byte alignment is equivalent to no alignment.  If
- * you only want to adjust downward, specify a maximum that's the same as
- * the initial value.
- */
-void v4l_bound_align_image(u32 *w, unsigned int wmin, unsigned int wmax,
-			   unsigned int walign,
-			   u32 *h, unsigned int hmin, unsigned int hmax,
-			   unsigned int halign, unsigned int salign)
-{
-	*w = clamp_align(*w, wmin, wmax, walign);
-	*h = clamp_align(*h, hmin, hmax, halign);
-
-	/* Usually we don't need to align the size and are done now. */
-	if (!salign)
-		return;
-
-	/* How much alignment do we have? */
-	walign = __ffs(*w);
-	halign = __ffs(*h);
-	/* Enough to satisfy the image alignment? */
-	if (walign + halign < salign) {
-		/* Max walign where there is still a valid width */
-		unsigned int wmaxa = __fls(wmax ^ (wmin - 1));
-		/* Max halign where there is still a valid height */
-		unsigned int hmaxa = __fls(hmax ^ (hmin - 1));
-
-		/* up the smaller alignment until we have enough */
-		do {
-			if (halign >= hmaxa ||
-			    (walign <= halign && walign < wmaxa)) {
-				*w = clamp_align(*w, wmin, wmax, walign + 1);
-				walign = __ffs(*w);
-			} else {
-				*h = clamp_align(*h, hmin, hmax, halign + 1);
-				halign = __ffs(*h);
-			}
-		} while (halign + walign < salign);
-	}
-}
-EXPORT_SYMBOL_GPL(v4l_bound_align_image);
-
-/**
- * v4l_fill_dv_preset_info - fill description of a digital video preset
- * @preset - preset value
- * @info - pointer to struct v4l2_dv_enum_preset
- *
- * drivers can use this helper function to fill description of dv preset
- * in info.
- */
-int v4l_fill_dv_preset_info(u32 preset, struct v4l2_dv_enum_preset *info)
-{
-	static const struct v4l2_dv_preset_info {
-		u16 width;
-		u16 height;
-		const char *name;
-	} dv_presets[] = {
-		{ 0, 0, "Invalid" },		/* V4L2_DV_INVALID */
-		{ 720,  480, "480p@59.94" },	/* V4L2_DV_480P59_94 */
-		{ 720,  576, "576p@50" },	/* V4L2_DV_576P50 */
-		{ 1280, 720, "720p@24" },	/* V4L2_DV_720P24 */
-		{ 1280, 720, "720p@25" },	/* V4L2_DV_720P25 */
-		{ 1280, 720, "720p@30" },	/* V4L2_DV_720P30 */
-		{ 1280, 720, "720p@50" },	/* V4L2_DV_720P50 */
-		{ 1280, 720, "720p@59.94" },	/* V4L2_DV_720P59_94 */
-		{ 1280, 720, "720p@60" },	/* V4L2_DV_720P60 */
-		{ 1920, 1080, "1080i@29.97" },	/* V4L2_DV_1080I29_97 */
-		{ 1920, 1080, "1080i@30" },	/* V4L2_DV_1080I30 */
-		{ 1920, 1080, "1080i@25" },	/* V4L2_DV_1080I25 */
-		{ 1920, 1080, "1080i@50" },	/* V4L2_DV_1080I50 */
-		{ 1920, 1080, "1080i@60" },	/* V4L2_DV_1080I60 */
-		{ 1920, 1080, "1080p@24" },	/* V4L2_DV_1080P24 */
-		{ 1920, 1080, "1080p@25" },	/* V4L2_DV_1080P25 */
-		{ 1920, 1080, "1080p@30" },	/* V4L2_DV_1080P30 */
-		{ 1920, 1080, "1080p@50" },	/* V4L2_DV_1080P50 */
-		{ 1920, 1080, "1080p@60" },	/* V4L2_DV_1080P60 */
-	};
-
-	if (info == NULL || preset >= ARRAY_SIZE(dv_presets))
-		return -EINVAL;
-
-	info->preset = preset;
-	info->width = dv_presets[preset].width;
-	info->height = dv_presets[preset].height;
-	strlcpy(info->name, dv_presets[preset].name, sizeof(info->name));
-	return 0;
-}
-EXPORT_SYMBOL_GPL(v4l_fill_dv_preset_info);
-
-const struct v4l2_frmsize_discrete *v4l2_find_nearest_format(
-		const struct v4l2_discrete_probe *probe,
-		s32 width, s32 height)
-{
-	int i;
-	u32 error, min_error = UINT_MAX;
-	const struct v4l2_frmsize_discrete *size, *best = NULL;
-
-	if (!probe)
-		return best;
-
-	for (i = 0, size = probe->sizes; i < probe->num_sizes; i++, size++) {
-		error = abs(size->width - width) + abs(size->height - height);
-		if (error < min_error) {
-			min_error = error;
-			best = size;
-		}
-		if (!error)
-			break;
-	}
-
-	return best;
-}
-EXPORT_SYMBOL_GPL(v4l2_find_nearest_format);
diff --git a/drivers/media/video/v4l2-compat-ioctl32.c b/drivers/media/video/v4l2-compat-ioctl32.c
deleted file mode 100644
index 9ebd5c540d10..000000000000
--- a/drivers/media/video/v4l2-compat-ioctl32.c
+++ /dev/null
@@ -1,1045 +0,0 @@
-/*
- * ioctl32.c: Conversion between 32bit and 64bit native ioctls.
- *	Separated from fs stuff by Arnd Bergmann <arnd@arndb.de>
- *
- * Copyright (C) 1997-2000  Jakub Jelinek  (jakub@redhat.com)
- * Copyright (C) 1998  Eddie C. Dost  (ecd@skynet.be)
- * Copyright (C) 2001,2002  Andi Kleen, SuSE Labs
- * Copyright (C) 2003       Pavel Machek (pavel@ucw.cz)
- * Copyright (C) 2005       Philippe De Muyter (phdm@macqel.be)
- * Copyright (C) 2008       Hans Verkuil <hverkuil@xs4all.nl>
- *
- * These routines maintain argument size conversion between 32bit and 64bit
- * ioctls.
- */
-
-#include <linux/compat.h>
-#include <linux/module.h>
-#include <linux/videodev2.h>
-#include <media/v4l2-dev.h>
-#include <media/v4l2-ioctl.h>
-
-static long native_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
-	long ret = -ENOIOCTLCMD;
-
-	if (file->f_op->unlocked_ioctl)
-		ret = file->f_op->unlocked_ioctl(file, cmd, arg);
-
-	return ret;
-}
-
-
-struct v4l2_clip32 {
-	struct v4l2_rect        c;
-	compat_caddr_t 		next;
-};
-
-struct v4l2_window32 {
-	struct v4l2_rect        w;
-	__u32		  	field;	/* enum v4l2_field */
-	__u32			chromakey;
-	compat_caddr_t		clips; /* actually struct v4l2_clip32 * */
-	__u32			clipcount;
-	compat_caddr_t		bitmap;
-};
-
-static int get_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up)
-{
-	if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_window32)) ||
-		copy_from_user(&kp->w, &up->w, sizeof(up->w)) ||
-		get_user(kp->field, &up->field) ||
-		get_user(kp->chromakey, &up->chromakey) ||
-		get_user(kp->clipcount, &up->clipcount))
-			return -EFAULT;
-	if (kp->clipcount > 2048)
-		return -EINVAL;
-	if (kp->clipcount) {
-		struct v4l2_clip32 __user *uclips;
-		struct v4l2_clip __user *kclips;
-		int n = kp->clipcount;
-		compat_caddr_t p;
-
-		if (get_user(p, &up->clips))
-			return -EFAULT;
-		uclips = compat_ptr(p);
-		kclips = compat_alloc_user_space(n * sizeof(struct v4l2_clip));
-		kp->clips = kclips;
-		while (--n >= 0) {
-			if (copy_in_user(&kclips->c, &uclips->c, sizeof(uclips->c)))
-				return -EFAULT;
-			if (put_user(n ? kclips + 1 : NULL, &kclips->next))
-				return -EFAULT;
-			uclips += 1;
-			kclips += 1;
-		}
-	} else
-		kp->clips = NULL;
-	return 0;
-}
-
-static int put_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up)
-{
-	if (copy_to_user(&up->w, &kp->w, sizeof(kp->w)) ||
-		put_user(kp->field, &up->field) ||
-		put_user(kp->chromakey, &up->chromakey) ||
-		put_user(kp->clipcount, &up->clipcount))
-			return -EFAULT;
-	return 0;
-}
-
-static inline int get_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pix_format __user *up)
-{
-	if (copy_from_user(kp, up, sizeof(struct v4l2_pix_format)))
-		return -EFAULT;
-	return 0;
-}
-
-static inline int get_v4l2_pix_format_mplane(struct v4l2_pix_format_mplane *kp,
-				struct v4l2_pix_format_mplane __user *up)
-{
-	if (copy_from_user(kp, up, sizeof(struct v4l2_pix_format_mplane)))
-		return -EFAULT;
-	return 0;
-}
-
-static inline int put_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pix_format __user *up)
-{
-	if (copy_to_user(up, kp, sizeof(struct v4l2_pix_format)))
-		return -EFAULT;
-	return 0;
-}
-
-static inline int put_v4l2_pix_format_mplane(struct v4l2_pix_format_mplane *kp,
-				struct v4l2_pix_format_mplane __user *up)
-{
-	if (copy_to_user(up, kp, sizeof(struct v4l2_pix_format_mplane)))
-		return -EFAULT;
-	return 0;
-}
-
-static inline int get_v4l2_vbi_format(struct v4l2_vbi_format *kp, struct v4l2_vbi_format __user *up)
-{
-	if (copy_from_user(kp, up, sizeof(struct v4l2_vbi_format)))
-		return -EFAULT;
-	return 0;
-}
-
-static inline int put_v4l2_vbi_format(struct v4l2_vbi_format *kp, struct v4l2_vbi_format __user *up)
-{
-	if (copy_to_user(up, kp, sizeof(struct v4l2_vbi_format)))
-		return -EFAULT;
-	return 0;
-}
-
-static inline int get_v4l2_sliced_vbi_format(struct v4l2_sliced_vbi_format *kp, struct v4l2_sliced_vbi_format __user *up)
-{
-	if (copy_from_user(kp, up, sizeof(struct v4l2_sliced_vbi_format)))
-		return -EFAULT;
-	return 0;
-}
-
-static inline int put_v4l2_sliced_vbi_format(struct v4l2_sliced_vbi_format *kp, struct v4l2_sliced_vbi_format __user *up)
-{
-	if (copy_to_user(up, kp, sizeof(struct v4l2_sliced_vbi_format)))
-		return -EFAULT;
-	return 0;
-}
-
-struct v4l2_format32 {
-	__u32	type;	/* enum v4l2_buf_type */
-	union {
-		struct v4l2_pix_format	pix;
-		struct v4l2_pix_format_mplane	pix_mp;
-		struct v4l2_window32	win;
-		struct v4l2_vbi_format	vbi;
-		struct v4l2_sliced_vbi_format	sliced;
-		__u8	raw_data[200];        /* user-defined */
-	} fmt;
-};
-
-/**
- * struct v4l2_create_buffers32 - VIDIOC_CREATE_BUFS32 argument
- * @index:	on return, index of the first created buffer
- * @count:	entry: number of requested buffers,
- *		return: number of created buffers
- * @memory:	buffer memory type
- * @format:	frame format, for which buffers are requested
- * @reserved:	future extensions
- */
-struct v4l2_create_buffers32 {
-	__u32			index;
-	__u32			count;
-	__u32			memory;	/* enum v4l2_memory */
-	struct v4l2_format32	format;
-	__u32			reserved[8];
-};
-
-static int __get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up)
-{
-	switch (kp->type) {
-	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT:
-		return get_v4l2_pix_format(&kp->fmt.pix, &up->fmt.pix);
-	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
-		return get_v4l2_pix_format_mplane(&kp->fmt.pix_mp,
-						  &up->fmt.pix_mp);
-	case V4L2_BUF_TYPE_VIDEO_OVERLAY:
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
-		return get_v4l2_window32(&kp->fmt.win, &up->fmt.win);
-	case V4L2_BUF_TYPE_VBI_CAPTURE:
-	case V4L2_BUF_TYPE_VBI_OUTPUT:
-		return get_v4l2_vbi_format(&kp->fmt.vbi, &up->fmt.vbi);
-	case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
-	case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
-		return get_v4l2_sliced_vbi_format(&kp->fmt.sliced, &up->fmt.sliced);
-	case V4L2_BUF_TYPE_PRIVATE:
-		if (copy_from_user(kp, up, sizeof(kp->fmt.raw_data)))
-			return -EFAULT;
-		return 0;
-	default:
-		printk(KERN_INFO "compat_ioctl32: unexpected VIDIOC_FMT type %d\n",
-								kp->type);
-		return -EINVAL;
-	}
-}
-
-static int get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up)
-{
-	if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_format32)) ||
-			get_user(kp->type, &up->type))
-			return -EFAULT;
-	return __get_v4l2_format32(kp, up);
-}
-
-static int get_v4l2_create32(struct v4l2_create_buffers *kp, struct v4l2_create_buffers32 __user *up)
-{
-	if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_create_buffers32)) ||
-	    copy_from_user(kp, up, offsetof(struct v4l2_create_buffers32, format.fmt)))
-			return -EFAULT;
-	return __get_v4l2_format32(&kp->format, &up->format);
-}
-
-static int __put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up)
-{
-	switch (kp->type) {
-	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT:
-		return put_v4l2_pix_format(&kp->fmt.pix, &up->fmt.pix);
-	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
-		return put_v4l2_pix_format_mplane(&kp->fmt.pix_mp,
-						  &up->fmt.pix_mp);
-	case V4L2_BUF_TYPE_VIDEO_OVERLAY:
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
-		return put_v4l2_window32(&kp->fmt.win, &up->fmt.win);
-	case V4L2_BUF_TYPE_VBI_CAPTURE:
-	case V4L2_BUF_TYPE_VBI_OUTPUT:
-		return put_v4l2_vbi_format(&kp->fmt.vbi, &up->fmt.vbi);
-	case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
-	case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
-		return put_v4l2_sliced_vbi_format(&kp->fmt.sliced, &up->fmt.sliced);
-	case V4L2_BUF_TYPE_PRIVATE:
-		if (copy_to_user(up, kp, sizeof(up->fmt.raw_data)))
-			return -EFAULT;
-		return 0;
-	default:
-		printk(KERN_INFO "compat_ioctl32: unexpected VIDIOC_FMT type %d\n",
-								kp->type);
-		return -EINVAL;
-	}
-}
-
-static int put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up)
-{
-	if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_format32)) ||
-		put_user(kp->type, &up->type))
-		return -EFAULT;
-	return __put_v4l2_format32(kp, up);
-}
-
-static int put_v4l2_create32(struct v4l2_create_buffers *kp, struct v4l2_create_buffers32 __user *up)
-{
-	if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_create_buffers32)) ||
-	    copy_to_user(up, kp, offsetof(struct v4l2_create_buffers32, format.fmt)))
-			return -EFAULT;
-	return __put_v4l2_format32(&kp->format, &up->format);
-}
-
-struct v4l2_standard32 {
-	__u32		     index;
-	__u32		     id[2]; /* __u64 would get the alignment wrong */
-	__u8		     name[24];
-	struct v4l2_fract    frameperiod; /* Frames, not fields */
-	__u32		     framelines;
-	__u32		     reserved[4];
-};
-
-static int get_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 __user *up)
-{
-	/* other fields are not set by the user, nor used by the driver */
-	if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_standard32)) ||
-		get_user(kp->index, &up->index))
-		return -EFAULT;
-	return 0;
-}
-
-static int put_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 __user *up)
-{
-	if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_standard32)) ||
-		put_user(kp->index, &up->index) ||
-		copy_to_user(up->id, &kp->id, sizeof(__u64)) ||
-		copy_to_user(up->name, kp->name, 24) ||
-		copy_to_user(&up->frameperiod, &kp->frameperiod, sizeof(kp->frameperiod)) ||
-		put_user(kp->framelines, &up->framelines) ||
-		copy_to_user(up->reserved, kp->reserved, 4 * sizeof(__u32)))
-			return -EFAULT;
-	return 0;
-}
-
-struct v4l2_plane32 {
-	__u32			bytesused;
-	__u32			length;
-	union {
-		__u32		mem_offset;
-		compat_long_t	userptr;
-	} m;
-	__u32			data_offset;
-	__u32			reserved[11];
-};
-
-struct v4l2_buffer32 {
-	__u32			index;
-	__u32			type;	/* enum v4l2_buf_type */
-	__u32			bytesused;
-	__u32			flags;
-	__u32			field;	/* enum v4l2_field */
-	struct compat_timeval	timestamp;
-	struct v4l2_timecode	timecode;
-	__u32			sequence;
-
-	/* memory location */
-	__u32			memory;	/* enum v4l2_memory */
-	union {
-		__u32           offset;
-		compat_long_t   userptr;
-		compat_caddr_t  planes;
-	} m;
-	__u32			length;
-	__u32			reserved2;
-	__u32			reserved;
-};
-
-static int get_v4l2_plane32(struct v4l2_plane *up, struct v4l2_plane32 *up32,
-				enum v4l2_memory memory)
-{
-	void __user *up_pln;
-	compat_long_t p;
-
-	if (copy_in_user(up, up32, 2 * sizeof(__u32)) ||
-		copy_in_user(&up->data_offset, &up32->data_offset,
-				sizeof(__u32)))
-		return -EFAULT;
-
-	if (memory == V4L2_MEMORY_USERPTR) {
-		if (get_user(p, &up32->m.userptr))
-			return -EFAULT;
-		up_pln = compat_ptr(p);
-		if (put_user((unsigned long)up_pln, &up->m.userptr))
-			return -EFAULT;
-	} else {
-		if (copy_in_user(&up->m.mem_offset, &up32->m.mem_offset,
-					sizeof(__u32)))
-			return -EFAULT;
-	}
-
-	return 0;
-}
-
-static int put_v4l2_plane32(struct v4l2_plane *up, struct v4l2_plane32 *up32,
-				enum v4l2_memory memory)
-{
-	if (copy_in_user(up32, up, 2 * sizeof(__u32)) ||
-		copy_in_user(&up32->data_offset, &up->data_offset,
-				sizeof(__u32)))
-		return -EFAULT;
-
-	/* For MMAP, driver might've set up the offset, so copy it back.
-	 * USERPTR stays the same (was userspace-provided), so no copying. */
-	if (memory == V4L2_MEMORY_MMAP)
-		if (copy_in_user(&up32->m.mem_offset, &up->m.mem_offset,
-					sizeof(__u32)))
-			return -EFAULT;
-
-	return 0;
-}
-
-static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user *up)
-{
-	struct v4l2_plane32 __user *uplane32;
-	struct v4l2_plane __user *uplane;
-	compat_caddr_t p;
-	int num_planes;
-	int ret;
-
-	if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_buffer32)) ||
-		get_user(kp->index, &up->index) ||
-		get_user(kp->type, &up->type) ||
-		get_user(kp->flags, &up->flags) ||
-		get_user(kp->memory, &up->memory))
-			return -EFAULT;
-
-	if (V4L2_TYPE_IS_OUTPUT(kp->type))
-		if (get_user(kp->bytesused, &up->bytesused) ||
-			get_user(kp->field, &up->field) ||
-			get_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) ||
-			get_user(kp->timestamp.tv_usec,
-					&up->timestamp.tv_usec))
-			return -EFAULT;
-
-	if (V4L2_TYPE_IS_MULTIPLANAR(kp->type)) {
-		if (get_user(kp->length, &up->length))
-			return -EFAULT;
-
-		num_planes = kp->length;
-		if (num_planes == 0) {
-			kp->m.planes = NULL;
-			/* num_planes == 0 is legal, e.g. when userspace doesn't
-			 * need planes array on DQBUF*/
-			return 0;
-		}
-
-		if (get_user(p, &up->m.planes))
-			return -EFAULT;
-
-		uplane32 = compat_ptr(p);
-		if (!access_ok(VERIFY_READ, uplane32,
-				num_planes * sizeof(struct v4l2_plane32)))
-			return -EFAULT;
-
-		/* We don't really care if userspace decides to kill itself
-		 * by passing a very big num_planes value */
-		uplane = compat_alloc_user_space(num_planes *
-						sizeof(struct v4l2_plane));
-		kp->m.planes = uplane;
-
-		while (--num_planes >= 0) {
-			ret = get_v4l2_plane32(uplane, uplane32, kp->memory);
-			if (ret)
-				return ret;
-			++uplane;
-			++uplane32;
-		}
-	} else {
-		switch (kp->memory) {
-		case V4L2_MEMORY_MMAP:
-			if (get_user(kp->length, &up->length) ||
-				get_user(kp->m.offset, &up->m.offset))
-				return -EFAULT;
-			break;
-		case V4L2_MEMORY_USERPTR:
-			{
-			compat_long_t tmp;
-
-			if (get_user(kp->length, &up->length) ||
-			    get_user(tmp, &up->m.userptr))
-				return -EFAULT;
-
-			kp->m.userptr = (unsigned long)compat_ptr(tmp);
-			}
-			break;
-		case V4L2_MEMORY_OVERLAY:
-			if (get_user(kp->m.offset, &up->m.offset))
-				return -EFAULT;
-			break;
-		}
-	}
-
-	return 0;
-}
-
-static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user *up)
-{
-	struct v4l2_plane32 __user *uplane32;
-	struct v4l2_plane __user *uplane;
-	compat_caddr_t p;
-	int num_planes;
-	int ret;
-
-	if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_buffer32)) ||
-		put_user(kp->index, &up->index) ||
-		put_user(kp->type, &up->type) ||
-		put_user(kp->flags, &up->flags) ||
-		put_user(kp->memory, &up->memory))
-			return -EFAULT;
-
-	if (put_user(kp->bytesused, &up->bytesused) ||
-		put_user(kp->field, &up->field) ||
-		put_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) ||
-		put_user(kp->timestamp.tv_usec, &up->timestamp.tv_usec) ||
-		copy_to_user(&up->timecode, &kp->timecode, sizeof(struct v4l2_timecode)) ||
-		put_user(kp->sequence, &up->sequence) ||
-		put_user(kp->reserved2, &up->reserved2) ||
-		put_user(kp->reserved, &up->reserved))
-			return -EFAULT;
-
-	if (V4L2_TYPE_IS_MULTIPLANAR(kp->type)) {
-		num_planes = kp->length;
-		if (num_planes == 0)
-			return 0;
-
-		uplane = kp->m.planes;
-		if (get_user(p, &up->m.planes))
-			return -EFAULT;
-		uplane32 = compat_ptr(p);
-
-		while (--num_planes >= 0) {
-			ret = put_v4l2_plane32(uplane, uplane32, kp->memory);
-			if (ret)
-				return ret;
-			++uplane;
-			++uplane32;
-		}
-	} else {
-		switch (kp->memory) {
-		case V4L2_MEMORY_MMAP:
-			if (put_user(kp->length, &up->length) ||
-				put_user(kp->m.offset, &up->m.offset))
-				return -EFAULT;
-			break;
-		case V4L2_MEMORY_USERPTR:
-			if (put_user(kp->length, &up->length) ||
-				put_user(kp->m.userptr, &up->m.userptr))
-				return -EFAULT;
-			break;
-		case V4L2_MEMORY_OVERLAY:
-			if (put_user(kp->m.offset, &up->m.offset))
-				return -EFAULT;
-			break;
-		}
-	}
-
-	return 0;
-}
-
-struct v4l2_framebuffer32 {
-	__u32			capability;
-	__u32			flags;
-	compat_caddr_t 		base;
-	struct v4l2_pix_format	fmt;
-};
-
-static int get_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_framebuffer32 __user *up)
-{
-	u32 tmp;
-
-	if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_framebuffer32)) ||
-		get_user(tmp, &up->base) ||
-		get_user(kp->capability, &up->capability) ||
-		get_user(kp->flags, &up->flags))
-			return -EFAULT;
-	kp->base = compat_ptr(tmp);
-	get_v4l2_pix_format(&kp->fmt, &up->fmt);
-	return 0;
-}
-
-static int put_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_framebuffer32 __user *up)
-{
-	u32 tmp = (u32)((unsigned long)kp->base);
-
-	if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_framebuffer32)) ||
-		put_user(tmp, &up->base) ||
-		put_user(kp->capability, &up->capability) ||
-		put_user(kp->flags, &up->flags))
-			return -EFAULT;
-	put_v4l2_pix_format(&kp->fmt, &up->fmt);
-	return 0;
-}
-
-struct v4l2_input32 {
-	__u32	     index;		/*  Which input */
-	__u8	     name[32];		/*  Label */
-	__u32	     type;		/*  Type of input */
-	__u32	     audioset;		/*  Associated audios (bitfield) */
-	__u32        tuner;             /*  Associated tuner */
-	v4l2_std_id  std;
-	__u32	     status;
-	__u32	     reserved[4];
-} __attribute__ ((packed));
-
-/* The 64-bit v4l2_input struct has extra padding at the end of the struct.
-   Otherwise it is identical to the 32-bit version. */
-static inline int get_v4l2_input32(struct v4l2_input *kp, struct v4l2_input32 __user *up)
-{
-	if (copy_from_user(kp, up, sizeof(struct v4l2_input32)))
-		return -EFAULT;
-	return 0;
-}
-
-static inline int put_v4l2_input32(struct v4l2_input *kp, struct v4l2_input32 __user *up)
-{
-	if (copy_to_user(up, kp, sizeof(struct v4l2_input32)))
-		return -EFAULT;
-	return 0;
-}
-
-struct v4l2_ext_controls32 {
-       __u32 ctrl_class;
-       __u32 count;
-       __u32 error_idx;
-       __u32 reserved[2];
-       compat_caddr_t controls; /* actually struct v4l2_ext_control32 * */
-};
-
-struct v4l2_ext_control32 {
-	__u32 id;
-	__u32 size;
-	__u32 reserved2[1];
-	union {
-		__s32 value;
-		__s64 value64;
-		compat_caddr_t string; /* actually char * */
-	};
-} __attribute__ ((packed));
-
-/* The following function really belong in v4l2-common, but that causes
-   a circular dependency between modules. We need to think about this, but
-   for now this will do. */
-
-/* Return non-zero if this control is a pointer type. Currently only
-   type STRING is a pointer type. */
-static inline int ctrl_is_pointer(u32 id)
-{
-	switch (id) {
-	case V4L2_CID_RDS_TX_PS_NAME:
-	case V4L2_CID_RDS_TX_RADIO_TEXT:
-		return 1;
-	default:
-		return 0;
-	}
-}
-
-static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext_controls32 __user *up)
-{
-	struct v4l2_ext_control32 __user *ucontrols;
-	struct v4l2_ext_control __user *kcontrols;
-	int n;
-	compat_caddr_t p;
-
-	if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_ext_controls32)) ||
-		get_user(kp->ctrl_class, &up->ctrl_class) ||
-		get_user(kp->count, &up->count) ||
-		get_user(kp->error_idx, &up->error_idx) ||
-		copy_from_user(kp->reserved, up->reserved, sizeof(kp->reserved)))
-			return -EFAULT;
-	n = kp->count;
-	if (n == 0) {
-		kp->controls = NULL;
-		return 0;
-	}
-	if (get_user(p, &up->controls))
-		return -EFAULT;
-	ucontrols = compat_ptr(p);
-	if (!access_ok(VERIFY_READ, ucontrols,
-			n * sizeof(struct v4l2_ext_control32)))
-		return -EFAULT;
-	kcontrols = compat_alloc_user_space(n * sizeof(struct v4l2_ext_control));
-	kp->controls = kcontrols;
-	while (--n >= 0) {
-		if (copy_in_user(kcontrols, ucontrols, sizeof(*ucontrols)))
-			return -EFAULT;
-		if (ctrl_is_pointer(kcontrols->id)) {
-			void __user *s;
-
-			if (get_user(p, &ucontrols->string))
-				return -EFAULT;
-			s = compat_ptr(p);
-			if (put_user(s, &kcontrols->string))
-				return -EFAULT;
-		}
-		ucontrols++;
-		kcontrols++;
-	}
-	return 0;
-}
-
-static int put_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext_controls32 __user *up)
-{
-	struct v4l2_ext_control32 __user *ucontrols;
-	struct v4l2_ext_control __user *kcontrols = kp->controls;
-	int n = kp->count;
-	compat_caddr_t p;
-
-	if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_ext_controls32)) ||
-		put_user(kp->ctrl_class, &up->ctrl_class) ||
-		put_user(kp->count, &up->count) ||
-		put_user(kp->error_idx, &up->error_idx) ||
-		copy_to_user(up->reserved, kp->reserved, sizeof(up->reserved)))
-			return -EFAULT;
-	if (!kp->count)
-		return 0;
-
-	if (get_user(p, &up->controls))
-		return -EFAULT;
-	ucontrols = compat_ptr(p);
-	if (!access_ok(VERIFY_WRITE, ucontrols,
-			n * sizeof(struct v4l2_ext_control32)))
-		return -EFAULT;
-
-	while (--n >= 0) {
-		unsigned size = sizeof(*ucontrols);
-
-		/* Do not modify the pointer when copying a pointer control.
-		   The contents of the pointer was changed, not the pointer
-		   itself. */
-		if (ctrl_is_pointer(kcontrols->id))
-			size -= sizeof(ucontrols->value64);
-		if (copy_in_user(ucontrols, kcontrols, size))
-			return -EFAULT;
-		ucontrols++;
-		kcontrols++;
-	}
-	return 0;
-}
-
-struct v4l2_event32 {
-	__u32				type;
-	union {
-		__u8			data[64];
-	} u;
-	__u32				pending;
-	__u32				sequence;
-	struct compat_timespec		timestamp;
-	__u32				id;
-	__u32				reserved[8];
-};
-
-static int put_v4l2_event32(struct v4l2_event *kp, struct v4l2_event32 __user *up)
-{
-	if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_event32)) ||
-		put_user(kp->type, &up->type) ||
-		copy_to_user(&up->u, &kp->u, sizeof(kp->u)) ||
-		put_user(kp->pending, &up->pending) ||
-		put_user(kp->sequence, &up->sequence) ||
-		put_compat_timespec(&kp->timestamp, &up->timestamp) ||
-		put_user(kp->id, &up->id) ||
-		copy_to_user(up->reserved, kp->reserved, 8 * sizeof(__u32)))
-			return -EFAULT;
-	return 0;
-}
-
-#define VIDIOC_G_FMT32		_IOWR('V',  4, struct v4l2_format32)
-#define VIDIOC_S_FMT32		_IOWR('V',  5, struct v4l2_format32)
-#define VIDIOC_QUERYBUF32	_IOWR('V',  9, struct v4l2_buffer32)
-#define VIDIOC_G_FBUF32		_IOR ('V', 10, struct v4l2_framebuffer32)
-#define VIDIOC_S_FBUF32		_IOW ('V', 11, struct v4l2_framebuffer32)
-#define VIDIOC_QBUF32		_IOWR('V', 15, struct v4l2_buffer32)
-#define VIDIOC_DQBUF32		_IOWR('V', 17, struct v4l2_buffer32)
-#define VIDIOC_ENUMSTD32	_IOWR('V', 25, struct v4l2_standard32)
-#define VIDIOC_ENUMINPUT32	_IOWR('V', 26, struct v4l2_input32)
-#define VIDIOC_TRY_FMT32      	_IOWR('V', 64, struct v4l2_format32)
-#define VIDIOC_G_EXT_CTRLS32    _IOWR('V', 71, struct v4l2_ext_controls32)
-#define VIDIOC_S_EXT_CTRLS32    _IOWR('V', 72, struct v4l2_ext_controls32)
-#define VIDIOC_TRY_EXT_CTRLS32  _IOWR('V', 73, struct v4l2_ext_controls32)
-#define	VIDIOC_DQEVENT32	_IOR ('V', 89, struct v4l2_event32)
-#define VIDIOC_CREATE_BUFS32	_IOWR('V', 92, struct v4l2_create_buffers32)
-#define VIDIOC_PREPARE_BUF32	_IOWR('V', 93, struct v4l2_buffer32)
-
-#define VIDIOC_OVERLAY32	_IOW ('V', 14, s32)
-#define VIDIOC_STREAMON32	_IOW ('V', 18, s32)
-#define VIDIOC_STREAMOFF32	_IOW ('V', 19, s32)
-#define VIDIOC_G_INPUT32	_IOR ('V', 38, s32)
-#define VIDIOC_S_INPUT32	_IOWR('V', 39, s32)
-#define VIDIOC_G_OUTPUT32	_IOR ('V', 46, s32)
-#define VIDIOC_S_OUTPUT32	_IOWR('V', 47, s32)
-
-static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
-	union {
-		struct v4l2_format v2f;
-		struct v4l2_buffer v2b;
-		struct v4l2_framebuffer v2fb;
-		struct v4l2_input v2i;
-		struct v4l2_standard v2s;
-		struct v4l2_ext_controls v2ecs;
-		struct v4l2_event v2ev;
-		struct v4l2_create_buffers v2crt;
-		unsigned long vx;
-		int vi;
-	} karg;
-	void __user *up = compat_ptr(arg);
-	int compatible_arg = 1;
-	long err = 0;
-
-	/* First, convert the command. */
-	switch (cmd) {
-	case VIDIOC_G_FMT32: cmd = VIDIOC_G_FMT; break;
-	case VIDIOC_S_FMT32: cmd = VIDIOC_S_FMT; break;
-	case VIDIOC_QUERYBUF32: cmd = VIDIOC_QUERYBUF; break;
-	case VIDIOC_G_FBUF32: cmd = VIDIOC_G_FBUF; break;
-	case VIDIOC_S_FBUF32: cmd = VIDIOC_S_FBUF; break;
-	case VIDIOC_QBUF32: cmd = VIDIOC_QBUF; break;
-	case VIDIOC_DQBUF32: cmd = VIDIOC_DQBUF; break;
-	case VIDIOC_ENUMSTD32: cmd = VIDIOC_ENUMSTD; break;
-	case VIDIOC_ENUMINPUT32: cmd = VIDIOC_ENUMINPUT; break;
-	case VIDIOC_TRY_FMT32: cmd = VIDIOC_TRY_FMT; break;
-	case VIDIOC_G_EXT_CTRLS32: cmd = VIDIOC_G_EXT_CTRLS; break;
-	case VIDIOC_S_EXT_CTRLS32: cmd = VIDIOC_S_EXT_CTRLS; break;
-	case VIDIOC_TRY_EXT_CTRLS32: cmd = VIDIOC_TRY_EXT_CTRLS; break;
-	case VIDIOC_DQEVENT32: cmd = VIDIOC_DQEVENT; break;
-	case VIDIOC_OVERLAY32: cmd = VIDIOC_OVERLAY; break;
-	case VIDIOC_STREAMON32: cmd = VIDIOC_STREAMON; break;
-	case VIDIOC_STREAMOFF32: cmd = VIDIOC_STREAMOFF; break;
-	case VIDIOC_G_INPUT32: cmd = VIDIOC_G_INPUT; break;
-	case VIDIOC_S_INPUT32: cmd = VIDIOC_S_INPUT; break;
-	case VIDIOC_G_OUTPUT32: cmd = VIDIOC_G_OUTPUT; break;
-	case VIDIOC_S_OUTPUT32: cmd = VIDIOC_S_OUTPUT; break;
-	case VIDIOC_CREATE_BUFS32: cmd = VIDIOC_CREATE_BUFS; break;
-	case VIDIOC_PREPARE_BUF32: cmd = VIDIOC_PREPARE_BUF; break;
-	}
-
-	switch (cmd) {
-	case VIDIOC_OVERLAY:
-	case VIDIOC_STREAMON:
-	case VIDIOC_STREAMOFF:
-	case VIDIOC_S_INPUT:
-	case VIDIOC_S_OUTPUT:
-		err = get_user(karg.vi, (s32 __user *)up);
-		compatible_arg = 0;
-		break;
-
-	case VIDIOC_G_INPUT:
-	case VIDIOC_G_OUTPUT:
-		compatible_arg = 0;
-		break;
-
-	case VIDIOC_G_FMT:
-	case VIDIOC_S_FMT:
-	case VIDIOC_TRY_FMT:
-		err = get_v4l2_format32(&karg.v2f, up);
-		compatible_arg = 0;
-		break;
-
-	case VIDIOC_CREATE_BUFS:
-		err = get_v4l2_create32(&karg.v2crt, up);
-		compatible_arg = 0;
-		break;
-
-	case VIDIOC_PREPARE_BUF:
-	case VIDIOC_QUERYBUF:
-	case VIDIOC_QBUF:
-	case VIDIOC_DQBUF:
-		err = get_v4l2_buffer32(&karg.v2b, up);
-		compatible_arg = 0;
-		break;
-
-	case VIDIOC_S_FBUF:
-		err = get_v4l2_framebuffer32(&karg.v2fb, up);
-		compatible_arg = 0;
-		break;
-
-	case VIDIOC_G_FBUF:
-		compatible_arg = 0;
-		break;
-
-	case VIDIOC_ENUMSTD:
-		err = get_v4l2_standard32(&karg.v2s, up);
-		compatible_arg = 0;
-		break;
-
-	case VIDIOC_ENUMINPUT:
-		err = get_v4l2_input32(&karg.v2i, up);
-		compatible_arg = 0;
-		break;
-
-	case VIDIOC_G_EXT_CTRLS:
-	case VIDIOC_S_EXT_CTRLS:
-	case VIDIOC_TRY_EXT_CTRLS:
-		err = get_v4l2_ext_controls32(&karg.v2ecs, up);
-		compatible_arg = 0;
-		break;
-	case VIDIOC_DQEVENT:
-		compatible_arg = 0;
-		break;
-	}
-	if (err)
-		return err;
-
-	if (compatible_arg)
-		err = native_ioctl(file, cmd, (unsigned long)up);
-	else {
-		mm_segment_t old_fs = get_fs();
-
-		set_fs(KERNEL_DS);
-		err = native_ioctl(file, cmd, (unsigned long)&karg);
-		set_fs(old_fs);
-	}
-
-	/* Special case: even after an error we need to put the
-	   results back for these ioctls since the error_idx will
-	   contain information on which control failed. */
-	switch (cmd) {
-	case VIDIOC_G_EXT_CTRLS:
-	case VIDIOC_S_EXT_CTRLS:
-	case VIDIOC_TRY_EXT_CTRLS:
-		if (put_v4l2_ext_controls32(&karg.v2ecs, up))
-			err = -EFAULT;
-		break;
-	}
-	if (err)
-		return err;
-
-	switch (cmd) {
-	case VIDIOC_S_INPUT:
-	case VIDIOC_S_OUTPUT:
-	case VIDIOC_G_INPUT:
-	case VIDIOC_G_OUTPUT:
-		err = put_user(((s32)karg.vi), (s32 __user *)up);
-		break;
-
-	case VIDIOC_G_FBUF:
-		err = put_v4l2_framebuffer32(&karg.v2fb, up);
-		break;
-
-	case VIDIOC_DQEVENT:
-		err = put_v4l2_event32(&karg.v2ev, up);
-		break;
-
-	case VIDIOC_G_FMT:
-	case VIDIOC_S_FMT:
-	case VIDIOC_TRY_FMT:
-		err = put_v4l2_format32(&karg.v2f, up);
-		break;
-
-	case VIDIOC_CREATE_BUFS:
-		err = put_v4l2_create32(&karg.v2crt, up);
-		break;
-
-	case VIDIOC_QUERYBUF:
-	case VIDIOC_QBUF:
-	case VIDIOC_DQBUF:
-		err = put_v4l2_buffer32(&karg.v2b, up);
-		break;
-
-	case VIDIOC_ENUMSTD:
-		err = put_v4l2_standard32(&karg.v2s, up);
-		break;
-
-	case VIDIOC_ENUMINPUT:
-		err = put_v4l2_input32(&karg.v2i, up);
-		break;
-	}
-	return err;
-}
-
-long v4l2_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg)
-{
-	struct video_device *vdev = video_devdata(file);
-	long ret = -ENOIOCTLCMD;
-
-	if (!file->f_op->unlocked_ioctl)
-		return ret;
-
-	switch (cmd) {
-	case VIDIOC_QUERYCAP:
-	case VIDIOC_RESERVED:
-	case VIDIOC_ENUM_FMT:
-	case VIDIOC_G_FMT32:
-	case VIDIOC_S_FMT32:
-	case VIDIOC_REQBUFS:
-	case VIDIOC_QUERYBUF32:
-	case VIDIOC_G_FBUF32:
-	case VIDIOC_S_FBUF32:
-	case VIDIOC_OVERLAY32:
-	case VIDIOC_QBUF32:
-	case VIDIOC_DQBUF32:
-	case VIDIOC_STREAMON32:
-	case VIDIOC_STREAMOFF32:
-	case VIDIOC_G_PARM:
-	case VIDIOC_S_PARM:
-	case VIDIOC_G_STD:
-	case VIDIOC_S_STD:
-	case VIDIOC_ENUMSTD32:
-	case VIDIOC_ENUMINPUT32:
-	case VIDIOC_G_CTRL:
-	case VIDIOC_S_CTRL:
-	case VIDIOC_G_TUNER:
-	case VIDIOC_S_TUNER:
-	case VIDIOC_G_AUDIO:
-	case VIDIOC_S_AUDIO:
-	case VIDIOC_QUERYCTRL:
-	case VIDIOC_QUERYMENU:
-	case VIDIOC_G_INPUT32:
-	case VIDIOC_S_INPUT32:
-	case VIDIOC_G_OUTPUT32:
-	case VIDIOC_S_OUTPUT32:
-	case VIDIOC_ENUMOUTPUT:
-	case VIDIOC_G_AUDOUT:
-	case VIDIOC_S_AUDOUT:
-	case VIDIOC_G_MODULATOR:
-	case VIDIOC_S_MODULATOR:
-	case VIDIOC_S_FREQUENCY:
-	case VIDIOC_G_FREQUENCY:
-	case VIDIOC_CROPCAP:
-	case VIDIOC_G_CROP:
-	case VIDIOC_S_CROP:
-	case VIDIOC_G_SELECTION:
-	case VIDIOC_S_SELECTION:
-	case VIDIOC_G_JPEGCOMP:
-	case VIDIOC_S_JPEGCOMP:
-	case VIDIOC_QUERYSTD:
-	case VIDIOC_TRY_FMT32:
-	case VIDIOC_ENUMAUDIO:
-	case VIDIOC_ENUMAUDOUT:
-	case VIDIOC_G_PRIORITY:
-	case VIDIOC_S_PRIORITY:
-	case VIDIOC_G_SLICED_VBI_CAP:
-	case VIDIOC_LOG_STATUS:
-	case VIDIOC_G_EXT_CTRLS32:
-	case VIDIOC_S_EXT_CTRLS32:
-	case VIDIOC_TRY_EXT_CTRLS32:
-	case VIDIOC_ENUM_FRAMESIZES:
-	case VIDIOC_ENUM_FRAMEINTERVALS:
-	case VIDIOC_G_ENC_INDEX:
-	case VIDIOC_ENCODER_CMD:
-	case VIDIOC_TRY_ENCODER_CMD:
-	case VIDIOC_DECODER_CMD:
-	case VIDIOC_TRY_DECODER_CMD:
-	case VIDIOC_DBG_S_REGISTER:
-	case VIDIOC_DBG_G_REGISTER:
-	case VIDIOC_DBG_G_CHIP_IDENT:
-	case VIDIOC_S_HW_FREQ_SEEK:
-	case VIDIOC_ENUM_DV_PRESETS:
-	case VIDIOC_S_DV_PRESET:
-	case VIDIOC_G_DV_PRESET:
-	case VIDIOC_QUERY_DV_PRESET:
-	case VIDIOC_S_DV_TIMINGS:
-	case VIDIOC_G_DV_TIMINGS:
-	case VIDIOC_DQEVENT:
-	case VIDIOC_DQEVENT32:
-	case VIDIOC_SUBSCRIBE_EVENT:
-	case VIDIOC_UNSUBSCRIBE_EVENT:
-	case VIDIOC_CREATE_BUFS32:
-	case VIDIOC_PREPARE_BUF32:
-	case VIDIOC_ENUM_DV_TIMINGS:
-	case VIDIOC_QUERY_DV_TIMINGS:
-	case VIDIOC_DV_TIMINGS_CAP:
-	case VIDIOC_ENUM_FREQ_BANDS:
-		ret = do_video_ioctl(file, cmd, arg);
-		break;
-
-	default:
-		if (vdev->fops->compat_ioctl32)
-			ret = vdev->fops->compat_ioctl32(file, cmd, arg);
-
-		if (ret == -ENOIOCTLCMD)
-			printk(KERN_WARNING "compat_ioctl32: "
-				"unknown ioctl '%c', dir=%d, #%d (0x%08x)\n",
-				_IOC_TYPE(cmd), _IOC_DIR(cmd), _IOC_NR(cmd),
-				cmd);
-		break;
-	}
-	return ret;
-}
-EXPORT_SYMBOL_GPL(v4l2_compat_ioctl32);
diff --git a/drivers/media/video/v4l2-ctrls.c b/drivers/media/video/v4l2-ctrls.c
deleted file mode 100644
index b6a2ee71e5c3..000000000000
--- a/drivers/media/video/v4l2-ctrls.c
+++ /dev/null
@@ -1,2651 +0,0 @@
-/*
-    V4L2 controls framework implementation.
-
-    Copyright (C) 2010  Hans Verkuil <hverkuil@xs4all.nl>
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#include <linux/ctype.h>
-#include <linux/slab.h>
-#include <linux/export.h>
-#include <media/v4l2-ioctl.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-ctrls.h>
-#include <media/v4l2-event.h>
-#include <media/v4l2-dev.h>
-
-#define has_op(master, op) \
-	(master->ops && master->ops->op)
-#define call_op(master, op) \
-	(has_op(master, op) ? master->ops->op(master) : 0)
-
-/* Internal temporary helper struct, one for each v4l2_ext_control */
-struct v4l2_ctrl_helper {
-	/* Pointer to the control reference of the master control */
-	struct v4l2_ctrl_ref *mref;
-	/* The control corresponding to the v4l2_ext_control ID field. */
-	struct v4l2_ctrl *ctrl;
-	/* v4l2_ext_control index of the next control belonging to the
-	   same cluster, or 0 if there isn't any. */
-	u32 next;
-};
-
-/* Small helper function to determine if the autocluster is set to manual
-   mode. */
-static bool is_cur_manual(const struct v4l2_ctrl *master)
-{
-	return master->is_auto && master->cur.val == master->manual_mode_value;
-}
-
-/* Same as above, but this checks the against the new value instead of the
-   current value. */
-static bool is_new_manual(const struct v4l2_ctrl *master)
-{
-	return master->is_auto && master->val == master->manual_mode_value;
-}
-
-/* Returns NULL or a character pointer array containing the menu for
-   the given control ID. The pointer array ends with a NULL pointer.
-   An empty string signifies a menu entry that is invalid. This allows
-   drivers to disable certain options if it is not supported. */
-const char * const *v4l2_ctrl_get_menu(u32 id)
-{
-	static const char * const mpeg_audio_sampling_freq[] = {
-		"44.1 kHz",
-		"48 kHz",
-		"32 kHz",
-		NULL
-	};
-	static const char * const mpeg_audio_encoding[] = {
-		"MPEG-1/2 Layer I",
-		"MPEG-1/2 Layer II",
-		"MPEG-1/2 Layer III",
-		"MPEG-2/4 AAC",
-		"AC-3",
-		NULL
-	};
-	static const char * const mpeg_audio_l1_bitrate[] = {
-		"32 kbps",
-		"64 kbps",
-		"96 kbps",
-		"128 kbps",
-		"160 kbps",
-		"192 kbps",
-		"224 kbps",
-		"256 kbps",
-		"288 kbps",
-		"320 kbps",
-		"352 kbps",
-		"384 kbps",
-		"416 kbps",
-		"448 kbps",
-		NULL
-	};
-	static const char * const mpeg_audio_l2_bitrate[] = {
-		"32 kbps",
-		"48 kbps",
-		"56 kbps",
-		"64 kbps",
-		"80 kbps",
-		"96 kbps",
-		"112 kbps",
-		"128 kbps",
-		"160 kbps",
-		"192 kbps",
-		"224 kbps",
-		"256 kbps",
-		"320 kbps",
-		"384 kbps",
-		NULL
-	};
-	static const char * const mpeg_audio_l3_bitrate[] = {
-		"32 kbps",
-		"40 kbps",
-		"48 kbps",
-		"56 kbps",
-		"64 kbps",
-		"80 kbps",
-		"96 kbps",
-		"112 kbps",
-		"128 kbps",
-		"160 kbps",
-		"192 kbps",
-		"224 kbps",
-		"256 kbps",
-		"320 kbps",
-		NULL
-	};
-	static const char * const mpeg_audio_ac3_bitrate[] = {
-		"32 kbps",
-		"40 kbps",
-		"48 kbps",
-		"56 kbps",
-		"64 kbps",
-		"80 kbps",
-		"96 kbps",
-		"112 kbps",
-		"128 kbps",
-		"160 kbps",
-		"192 kbps",
-		"224 kbps",
-		"256 kbps",
-		"320 kbps",
-		"384 kbps",
-		"448 kbps",
-		"512 kbps",
-		"576 kbps",
-		"640 kbps",
-		NULL
-	};
-	static const char * const mpeg_audio_mode[] = {
-		"Stereo",
-		"Joint Stereo",
-		"Dual",
-		"Mono",
-		NULL
-	};
-	static const char * const mpeg_audio_mode_extension[] = {
-		"Bound 4",
-		"Bound 8",
-		"Bound 12",
-		"Bound 16",
-		NULL
-	};
-	static const char * const mpeg_audio_emphasis[] = {
-		"No Emphasis",
-		"50/15 us",
-		"CCITT J17",
-		NULL
-	};
-	static const char * const mpeg_audio_crc[] = {
-		"No CRC",
-		"16-bit CRC",
-		NULL
-	};
-	static const char * const mpeg_audio_dec_playback[] = {
-		"Auto",
-		"Stereo",
-		"Left",
-		"Right",
-		"Mono",
-		"Swapped Stereo",
-		NULL
-	};
-	static const char * const mpeg_video_encoding[] = {
-		"MPEG-1",
-		"MPEG-2",
-		"MPEG-4 AVC",
-		NULL
-	};
-	static const char * const mpeg_video_aspect[] = {
-		"1x1",
-		"4x3",
-		"16x9",
-		"2.21x1",
-		NULL
-	};
-	static const char * const mpeg_video_bitrate_mode[] = {
-		"Variable Bitrate",
-		"Constant Bitrate",
-		NULL
-	};
-	static const char * const mpeg_stream_type[] = {
-		"MPEG-2 Program Stream",
-		"MPEG-2 Transport Stream",
-		"MPEG-1 System Stream",
-		"MPEG-2 DVD-compatible Stream",
-		"MPEG-1 VCD-compatible Stream",
-		"MPEG-2 SVCD-compatible Stream",
-		NULL
-	};
-	static const char * const mpeg_stream_vbi_fmt[] = {
-		"No VBI",
-		"Private Packet, IVTV Format",
-		NULL
-	};
-	static const char * const camera_power_line_frequency[] = {
-		"Disabled",
-		"50 Hz",
-		"60 Hz",
-		"Auto",
-		NULL
-	};
-	static const char * const camera_exposure_auto[] = {
-		"Auto Mode",
-		"Manual Mode",
-		"Shutter Priority Mode",
-		"Aperture Priority Mode",
-		NULL
-	};
-	static const char * const camera_exposure_metering[] = {
-		"Average",
-		"Center Weighted",
-		"Spot",
-		NULL
-	};
-	static const char * const camera_auto_focus_range[] = {
-		"Auto",
-		"Normal",
-		"Macro",
-		"Infinity",
-		NULL
-	};
-	static const char * const colorfx[] = {
-		"None",
-		"Black & White",
-		"Sepia",
-		"Negative",
-		"Emboss",
-		"Sketch",
-		"Sky Blue",
-		"Grass Green",
-		"Skin Whiten",
-		"Vivid",
-		"Aqua",
-		"Art Freeze",
-		"Silhouette",
-		"Solarization",
-		"Antique",
-		"Set Cb/Cr",
-		NULL
-	};
-	static const char * const auto_n_preset_white_balance[] = {
-		"Manual",
-		"Auto",
-		"Incandescent",
-		"Fluorescent",
-		"Fluorescent H",
-		"Horizon",
-		"Daylight",
-		"Flash",
-		"Cloudy",
-		"Shade",
-		NULL,
-	};
-	static const char * const camera_iso_sensitivity_auto[] = {
-		"Manual",
-		"Auto",
-		NULL
-	};
-	static const char * const scene_mode[] = {
-		"None",
-		"Backlight",
-		"Beach/Snow",
-		"Candle Light",
-		"Dusk/Dawn",
-		"Fall Colors",
-		"Fireworks",
-		"Landscape",
-		"Night",
-		"Party/Indoor",
-		"Portrait",
-		"Sports",
-		"Sunset",
-		"Text",
-		NULL
-	};
-	static const char * const tune_preemphasis[] = {
-		"No Preemphasis",
-		"50 Microseconds",
-		"75 Microseconds",
-		NULL,
-	};
-	static const char * const header_mode[] = {
-		"Separate Buffer",
-		"Joined With 1st Frame",
-		NULL,
-	};
-	static const char * const multi_slice[] = {
-		"Single",
-		"Max Macroblocks",
-		"Max Bytes",
-		NULL,
-	};
-	static const char * const entropy_mode[] = {
-		"CAVLC",
-		"CABAC",
-		NULL,
-	};
-	static const char * const mpeg_h264_level[] = {
-		"1",
-		"1b",
-		"1.1",
-		"1.2",
-		"1.3",
-		"2",
-		"2.1",
-		"2.2",
-		"3",
-		"3.1",
-		"3.2",
-		"4",
-		"4.1",
-		"4.2",
-		"5",
-		"5.1",
-		NULL,
-	};
-	static const char * const h264_loop_filter[] = {
-		"Enabled",
-		"Disabled",
-		"Disabled at Slice Boundary",
-		NULL,
-	};
-	static const char * const h264_profile[] = {
-		"Baseline",
-		"Constrained Baseline",
-		"Main",
-		"Extended",
-		"High",
-		"High 10",
-		"High 422",
-		"High 444 Predictive",
-		"High 10 Intra",
-		"High 422 Intra",
-		"High 444 Intra",
-		"CAVLC 444 Intra",
-		"Scalable Baseline",
-		"Scalable High",
-		"Scalable High Intra",
-		"Multiview High",
-		NULL,
-	};
-	static const char * const vui_sar_idc[] = {
-		"Unspecified",
-		"1:1",
-		"12:11",
-		"10:11",
-		"16:11",
-		"40:33",
-		"24:11",
-		"20:11",
-		"32:11",
-		"80:33",
-		"18:11",
-		"15:11",
-		"64:33",
-		"160:99",
-		"4:3",
-		"3:2",
-		"2:1",
-		"Extended SAR",
-		NULL,
-	};
-	static const char * const mpeg_mpeg4_level[] = {
-		"0",
-		"0b",
-		"1",
-		"2",
-		"3",
-		"3b",
-		"4",
-		"5",
-		NULL,
-	};
-	static const char * const mpeg4_profile[] = {
-		"Simple",
-		"Advanced Simple",
-		"Core",
-		"Simple Scalable",
-		"Advanced Coding Efficency",
-		NULL,
-	};
-
-	static const char * const flash_led_mode[] = {
-		"Off",
-		"Flash",
-		"Torch",
-		NULL,
-	};
-	static const char * const flash_strobe_source[] = {
-		"Software",
-		"External",
-		NULL,
-	};
-
-	static const char * const jpeg_chroma_subsampling[] = {
-		"4:4:4",
-		"4:2:2",
-		"4:2:0",
-		"4:1:1",
-		"4:1:0",
-		"Gray",
-		NULL,
-	};
-
-	switch (id) {
-	case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
-		return mpeg_audio_sampling_freq;
-	case V4L2_CID_MPEG_AUDIO_ENCODING:
-		return mpeg_audio_encoding;
-	case V4L2_CID_MPEG_AUDIO_L1_BITRATE:
-		return mpeg_audio_l1_bitrate;
-	case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
-		return mpeg_audio_l2_bitrate;
-	case V4L2_CID_MPEG_AUDIO_L3_BITRATE:
-		return mpeg_audio_l3_bitrate;
-	case V4L2_CID_MPEG_AUDIO_AC3_BITRATE:
-		return mpeg_audio_ac3_bitrate;
-	case V4L2_CID_MPEG_AUDIO_MODE:
-		return mpeg_audio_mode;
-	case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION:
-		return mpeg_audio_mode_extension;
-	case V4L2_CID_MPEG_AUDIO_EMPHASIS:
-		return mpeg_audio_emphasis;
-	case V4L2_CID_MPEG_AUDIO_CRC:
-		return mpeg_audio_crc;
-	case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK:
-	case V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK:
-		return mpeg_audio_dec_playback;
-	case V4L2_CID_MPEG_VIDEO_ENCODING:
-		return mpeg_video_encoding;
-	case V4L2_CID_MPEG_VIDEO_ASPECT:
-		return mpeg_video_aspect;
-	case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
-		return mpeg_video_bitrate_mode;
-	case V4L2_CID_MPEG_STREAM_TYPE:
-		return mpeg_stream_type;
-	case V4L2_CID_MPEG_STREAM_VBI_FMT:
-		return mpeg_stream_vbi_fmt;
-	case V4L2_CID_POWER_LINE_FREQUENCY:
-		return camera_power_line_frequency;
-	case V4L2_CID_EXPOSURE_AUTO:
-		return camera_exposure_auto;
-	case V4L2_CID_EXPOSURE_METERING:
-		return camera_exposure_metering;
-	case V4L2_CID_AUTO_FOCUS_RANGE:
-		return camera_auto_focus_range;
-	case V4L2_CID_COLORFX:
-		return colorfx;
-	case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE:
-		return auto_n_preset_white_balance;
-	case V4L2_CID_ISO_SENSITIVITY_AUTO:
-		return camera_iso_sensitivity_auto;
-	case V4L2_CID_SCENE_MODE:
-		return scene_mode;
-	case V4L2_CID_TUNE_PREEMPHASIS:
-		return tune_preemphasis;
-	case V4L2_CID_FLASH_LED_MODE:
-		return flash_led_mode;
-	case V4L2_CID_FLASH_STROBE_SOURCE:
-		return flash_strobe_source;
-	case V4L2_CID_MPEG_VIDEO_HEADER_MODE:
-		return header_mode;
-	case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE:
-		return multi_slice;
-	case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE:
-		return entropy_mode;
-	case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
-		return mpeg_h264_level;
-	case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE:
-		return h264_loop_filter;
-	case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
-		return h264_profile;
-	case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC:
-		return vui_sar_idc;
-	case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL:
-		return mpeg_mpeg4_level;
-	case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE:
-		return mpeg4_profile;
-	case V4L2_CID_JPEG_CHROMA_SUBSAMPLING:
-		return jpeg_chroma_subsampling;
-
-	default:
-		return NULL;
-	}
-}
-EXPORT_SYMBOL(v4l2_ctrl_get_menu);
-
-/* Return the control name. */
-const char *v4l2_ctrl_get_name(u32 id)
-{
-	switch (id) {
-	/* USER controls */
-	/* Keep the order of the 'case's the same as in videodev2.h! */
-	case V4L2_CID_USER_CLASS:		return "User Controls";
-	case V4L2_CID_BRIGHTNESS:		return "Brightness";
-	case V4L2_CID_CONTRAST:			return "Contrast";
-	case V4L2_CID_SATURATION:		return "Saturation";
-	case V4L2_CID_HUE:			return "Hue";
-	case V4L2_CID_AUDIO_VOLUME:		return "Volume";
-	case V4L2_CID_AUDIO_BALANCE:		return "Balance";
-	case V4L2_CID_AUDIO_BASS:		return "Bass";
-	case V4L2_CID_AUDIO_TREBLE:		return "Treble";
-	case V4L2_CID_AUDIO_MUTE:		return "Mute";
-	case V4L2_CID_AUDIO_LOUDNESS:		return "Loudness";
-	case V4L2_CID_BLACK_LEVEL:		return "Black Level";
-	case V4L2_CID_AUTO_WHITE_BALANCE:	return "White Balance, Automatic";
-	case V4L2_CID_DO_WHITE_BALANCE:		return "Do White Balance";
-	case V4L2_CID_RED_BALANCE:		return "Red Balance";
-	case V4L2_CID_BLUE_BALANCE:		return "Blue Balance";
-	case V4L2_CID_GAMMA:			return "Gamma";
-	case V4L2_CID_EXPOSURE:			return "Exposure";
-	case V4L2_CID_AUTOGAIN:			return "Gain, Automatic";
-	case V4L2_CID_GAIN:			return "Gain";
-	case V4L2_CID_HFLIP:			return "Horizontal Flip";
-	case V4L2_CID_VFLIP:			return "Vertical Flip";
-	case V4L2_CID_HCENTER:			return "Horizontal Center";
-	case V4L2_CID_VCENTER:			return "Vertical Center";
-	case V4L2_CID_POWER_LINE_FREQUENCY:	return "Power Line Frequency";
-	case V4L2_CID_HUE_AUTO:			return "Hue, Automatic";
-	case V4L2_CID_WHITE_BALANCE_TEMPERATURE: return "White Balance Temperature";
-	case V4L2_CID_SHARPNESS:		return "Sharpness";
-	case V4L2_CID_BACKLIGHT_COMPENSATION:	return "Backlight Compensation";
-	case V4L2_CID_CHROMA_AGC:		return "Chroma AGC";
-	case V4L2_CID_COLOR_KILLER:		return "Color Killer";
-	case V4L2_CID_COLORFX:			return "Color Effects";
-	case V4L2_CID_AUTOBRIGHTNESS:		return "Brightness, Automatic";
-	case V4L2_CID_BAND_STOP_FILTER:		return "Band-Stop Filter";
-	case V4L2_CID_ROTATE:			return "Rotate";
-	case V4L2_CID_BG_COLOR:			return "Background Color";
-	case V4L2_CID_CHROMA_GAIN:		return "Chroma Gain";
-	case V4L2_CID_ILLUMINATORS_1:		return "Illuminator 1";
-	case V4L2_CID_ILLUMINATORS_2:		return "Illuminator 2";
-	case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE:	return "Min Number of Capture Buffers";
-	case V4L2_CID_MIN_BUFFERS_FOR_OUTPUT:	return "Min Number of Output Buffers";
-	case V4L2_CID_ALPHA_COMPONENT:		return "Alpha Component";
-	case V4L2_CID_COLORFX_CBCR:		return "Color Effects, CbCr";
-
-	/* MPEG controls */
-	/* Keep the order of the 'case's the same as in videodev2.h! */
-	case V4L2_CID_MPEG_CLASS:		return "MPEG Encoder Controls";
-	case V4L2_CID_MPEG_STREAM_TYPE:		return "Stream Type";
-	case V4L2_CID_MPEG_STREAM_PID_PMT:	return "Stream PMT Program ID";
-	case V4L2_CID_MPEG_STREAM_PID_AUDIO:	return "Stream Audio Program ID";
-	case V4L2_CID_MPEG_STREAM_PID_VIDEO:	return "Stream Video Program ID";
-	case V4L2_CID_MPEG_STREAM_PID_PCR:	return "Stream PCR Program ID";
-	case V4L2_CID_MPEG_STREAM_PES_ID_AUDIO: return "Stream PES Audio ID";
-	case V4L2_CID_MPEG_STREAM_PES_ID_VIDEO: return "Stream PES Video ID";
-	case V4L2_CID_MPEG_STREAM_VBI_FMT:	return "Stream VBI Format";
-	case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: return "Audio Sampling Frequency";
-	case V4L2_CID_MPEG_AUDIO_ENCODING:	return "Audio Encoding";
-	case V4L2_CID_MPEG_AUDIO_L1_BITRATE:	return "Audio Layer I Bitrate";
-	case V4L2_CID_MPEG_AUDIO_L2_BITRATE:	return "Audio Layer II Bitrate";
-	case V4L2_CID_MPEG_AUDIO_L3_BITRATE:	return "Audio Layer III Bitrate";
-	case V4L2_CID_MPEG_AUDIO_MODE:		return "Audio Stereo Mode";
-	case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION: return "Audio Stereo Mode Extension";
-	case V4L2_CID_MPEG_AUDIO_EMPHASIS:	return "Audio Emphasis";
-	case V4L2_CID_MPEG_AUDIO_CRC:		return "Audio CRC";
-	case V4L2_CID_MPEG_AUDIO_MUTE:		return "Audio Mute";
-	case V4L2_CID_MPEG_AUDIO_AAC_BITRATE:	return "Audio AAC Bitrate";
-	case V4L2_CID_MPEG_AUDIO_AC3_BITRATE:	return "Audio AC-3 Bitrate";
-	case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK:	return "Audio Playback";
-	case V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK: return "Audio Multilingual Playback";
-	case V4L2_CID_MPEG_VIDEO_ENCODING:	return "Video Encoding";
-	case V4L2_CID_MPEG_VIDEO_ASPECT:	return "Video Aspect";
-	case V4L2_CID_MPEG_VIDEO_B_FRAMES:	return "Video B Frames";
-	case V4L2_CID_MPEG_VIDEO_GOP_SIZE:	return "Video GOP Size";
-	case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE:	return "Video GOP Closure";
-	case V4L2_CID_MPEG_VIDEO_PULLDOWN:	return "Video Pulldown";
-	case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:	return "Video Bitrate Mode";
-	case V4L2_CID_MPEG_VIDEO_BITRATE:	return "Video Bitrate";
-	case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:	return "Video Peak Bitrate";
-	case V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION: return "Video Temporal Decimation";
-	case V4L2_CID_MPEG_VIDEO_MUTE:		return "Video Mute";
-	case V4L2_CID_MPEG_VIDEO_MUTE_YUV:	return "Video Mute YUV";
-	case V4L2_CID_MPEG_VIDEO_DECODER_SLICE_INTERFACE:	return "Decoder Slice Interface";
-	case V4L2_CID_MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER:	return "MPEG4 Loop Filter Enable";
-	case V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB:	return "Number of Intra Refresh MBs";
-	case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE:		return "Frame Level Rate Control Enable";
-	case V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE:			return "H264 MB Level Rate Control";
-	case V4L2_CID_MPEG_VIDEO_HEADER_MODE:			return "Sequence Header Mode";
-	case V4L2_CID_MPEG_VIDEO_MAX_REF_PIC:			return "Max Number of Reference Pics";
-	case V4L2_CID_MPEG_VIDEO_H263_I_FRAME_QP:		return "H263 I-Frame QP Value";
-	case V4L2_CID_MPEG_VIDEO_H263_P_FRAME_QP:		return "H263 P-Frame QP Value";
-	case V4L2_CID_MPEG_VIDEO_H263_B_FRAME_QP:		return "H263 B-Frame QP Value";
-	case V4L2_CID_MPEG_VIDEO_H263_MIN_QP:			return "H263 Minimum QP Value";
-	case V4L2_CID_MPEG_VIDEO_H263_MAX_QP:			return "H263 Maximum QP Value";
-	case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP:		return "H264 I-Frame QP Value";
-	case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP:		return "H264 P-Frame QP Value";
-	case V4L2_CID_MPEG_VIDEO_H264_B_FRAME_QP:		return "H264 B-Frame QP Value";
-	case V4L2_CID_MPEG_VIDEO_H264_MAX_QP:			return "H264 Maximum QP Value";
-	case V4L2_CID_MPEG_VIDEO_H264_MIN_QP:			return "H264 Minimum QP Value";
-	case V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM:		return "H264 8x8 Transform Enable";
-	case V4L2_CID_MPEG_VIDEO_H264_CPB_SIZE:			return "H264 CPB Buffer Size";
-	case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE:		return "H264 Entropy Mode";
-	case V4L2_CID_MPEG_VIDEO_H264_I_PERIOD:			return "H264 I-Frame Period";
-	case V4L2_CID_MPEG_VIDEO_H264_LEVEL:			return "H264 Level";
-	case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA:	return "H264 Loop Filter Alpha Offset";
-	case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA:		return "H264 Loop Filter Beta Offset";
-	case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE:		return "H264 Loop Filter Mode";
-	case V4L2_CID_MPEG_VIDEO_H264_PROFILE:			return "H264 Profile";
-	case V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_HEIGHT:	return "Vertical Size of SAR";
-	case V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_WIDTH:	return "Horizontal Size of SAR";
-	case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_ENABLE:		return "Aspect Ratio VUI Enable";
-	case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC:		return "VUI Aspect Ratio IDC";
-	case V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP:		return "MPEG4 I-Frame QP Value";
-	case V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP:		return "MPEG4 P-Frame QP Value";
-	case V4L2_CID_MPEG_VIDEO_MPEG4_B_FRAME_QP:		return "MPEG4 B-Frame QP Value";
-	case V4L2_CID_MPEG_VIDEO_MPEG4_MIN_QP:			return "MPEG4 Minimum QP Value";
-	case V4L2_CID_MPEG_VIDEO_MPEG4_MAX_QP:			return "MPEG4 Maximum QP Value";
-	case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL:			return "MPEG4 Level";
-	case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE:			return "MPEG4 Profile";
-	case V4L2_CID_MPEG_VIDEO_MPEG4_QPEL:			return "Quarter Pixel Search Enable";
-	case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES:		return "Maximum Bytes in a Slice";
-	case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB:		return "Number of MBs in a Slice";
-	case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE:		return "Slice Partitioning Method";
-	case V4L2_CID_MPEG_VIDEO_VBV_SIZE:			return "VBV Buffer Size";
-	case V4L2_CID_MPEG_VIDEO_DEC_PTS:			return "Video Decoder PTS";
-	case V4L2_CID_MPEG_VIDEO_DEC_FRAME:			return "Video Decoder Frame Count";
-
-	/* CAMERA controls */
-	/* Keep the order of the 'case's the same as in videodev2.h! */
-	case V4L2_CID_CAMERA_CLASS:		return "Camera Controls";
-	case V4L2_CID_EXPOSURE_AUTO:		return "Auto Exposure";
-	case V4L2_CID_EXPOSURE_ABSOLUTE:	return "Exposure Time, Absolute";
-	case V4L2_CID_EXPOSURE_AUTO_PRIORITY:	return "Exposure, Dynamic Framerate";
-	case V4L2_CID_PAN_RELATIVE:		return "Pan, Relative";
-	case V4L2_CID_TILT_RELATIVE:		return "Tilt, Relative";
-	case V4L2_CID_PAN_RESET:		return "Pan, Reset";
-	case V4L2_CID_TILT_RESET:		return "Tilt, Reset";
-	case V4L2_CID_PAN_ABSOLUTE:		return "Pan, Absolute";
-	case V4L2_CID_TILT_ABSOLUTE:		return "Tilt, Absolute";
-	case V4L2_CID_FOCUS_ABSOLUTE:		return "Focus, Absolute";
-	case V4L2_CID_FOCUS_RELATIVE:		return "Focus, Relative";
-	case V4L2_CID_FOCUS_AUTO:		return "Focus, Automatic Continuous";
-	case V4L2_CID_ZOOM_ABSOLUTE:		return "Zoom, Absolute";
-	case V4L2_CID_ZOOM_RELATIVE:		return "Zoom, Relative";
-	case V4L2_CID_ZOOM_CONTINUOUS:		return "Zoom, Continuous";
-	case V4L2_CID_PRIVACY:			return "Privacy";
-	case V4L2_CID_IRIS_ABSOLUTE:		return "Iris, Absolute";
-	case V4L2_CID_IRIS_RELATIVE:		return "Iris, Relative";
-	case V4L2_CID_AUTO_EXPOSURE_BIAS:	return "Auto Exposure, Bias";
-	case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE: return "White Balance, Auto & Preset";
-	case V4L2_CID_WIDE_DYNAMIC_RANGE:	return "Wide Dynamic Range";
-	case V4L2_CID_IMAGE_STABILIZATION:	return "Image Stabilization";
-	case V4L2_CID_ISO_SENSITIVITY:		return "ISO Sensitivity";
-	case V4L2_CID_ISO_SENSITIVITY_AUTO:	return "ISO Sensitivity, Auto";
-	case V4L2_CID_EXPOSURE_METERING:	return "Exposure, Metering Mode";
-	case V4L2_CID_SCENE_MODE:		return "Scene Mode";
-	case V4L2_CID_3A_LOCK:			return "3A Lock";
-	case V4L2_CID_AUTO_FOCUS_START:		return "Auto Focus, Start";
-	case V4L2_CID_AUTO_FOCUS_STOP:		return "Auto Focus, Stop";
-	case V4L2_CID_AUTO_FOCUS_STATUS:	return "Auto Focus, Status";
-	case V4L2_CID_AUTO_FOCUS_RANGE:		return "Auto Focus, Range";
-
-	/* FM Radio Modulator control */
-	/* Keep the order of the 'case's the same as in videodev2.h! */
-	case V4L2_CID_FM_TX_CLASS:		return "FM Radio Modulator Controls";
-	case V4L2_CID_RDS_TX_DEVIATION:		return "RDS Signal Deviation";
-	case V4L2_CID_RDS_TX_PI:		return "RDS Program ID";
-	case V4L2_CID_RDS_TX_PTY:		return "RDS Program Type";
-	case V4L2_CID_RDS_TX_PS_NAME:		return "RDS PS Name";
-	case V4L2_CID_RDS_TX_RADIO_TEXT:	return "RDS Radio Text";
-	case V4L2_CID_AUDIO_LIMITER_ENABLED:	return "Audio Limiter Feature Enabled";
-	case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME: return "Audio Limiter Release Time";
-	case V4L2_CID_AUDIO_LIMITER_DEVIATION:	return "Audio Limiter Deviation";
-	case V4L2_CID_AUDIO_COMPRESSION_ENABLED: return "Audio Compression Enabled";
-	case V4L2_CID_AUDIO_COMPRESSION_GAIN:	return "Audio Compression Gain";
-	case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD: return "Audio Compression Threshold";
-	case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME: return "Audio Compression Attack Time";
-	case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME: return "Audio Compression Release Time";
-	case V4L2_CID_PILOT_TONE_ENABLED:	return "Pilot Tone Feature Enabled";
-	case V4L2_CID_PILOT_TONE_DEVIATION:	return "Pilot Tone Deviation";
-	case V4L2_CID_PILOT_TONE_FREQUENCY:	return "Pilot Tone Frequency";
-	case V4L2_CID_TUNE_PREEMPHASIS:		return "Pre-Emphasis";
-	case V4L2_CID_TUNE_POWER_LEVEL:		return "Tune Power Level";
-	case V4L2_CID_TUNE_ANTENNA_CAPACITOR:	return "Tune Antenna Capacitor";
-
-	/* Flash controls */
-	case V4L2_CID_FLASH_CLASS:		return "Flash Controls";
-	case V4L2_CID_FLASH_LED_MODE:		return "LED Mode";
-	case V4L2_CID_FLASH_STROBE_SOURCE:	return "Strobe Source";
-	case V4L2_CID_FLASH_STROBE:		return "Strobe";
-	case V4L2_CID_FLASH_STROBE_STOP:	return "Stop Strobe";
-	case V4L2_CID_FLASH_STROBE_STATUS:	return "Strobe Status";
-	case V4L2_CID_FLASH_TIMEOUT:		return "Strobe Timeout";
-	case V4L2_CID_FLASH_INTENSITY:		return "Intensity, Flash Mode";
-	case V4L2_CID_FLASH_TORCH_INTENSITY:	return "Intensity, Torch Mode";
-	case V4L2_CID_FLASH_INDICATOR_INTENSITY: return "Intensity, Indicator";
-	case V4L2_CID_FLASH_FAULT:		return "Faults";
-	case V4L2_CID_FLASH_CHARGE:		return "Charge";
-	case V4L2_CID_FLASH_READY:		return "Ready to Strobe";
-
-	/* JPEG encoder controls */
-	/* Keep the order of the 'case's the same as in videodev2.h! */
-	case V4L2_CID_JPEG_CLASS:		return "JPEG Compression Controls";
-	case V4L2_CID_JPEG_CHROMA_SUBSAMPLING:	return "Chroma Subsampling";
-	case V4L2_CID_JPEG_RESTART_INTERVAL:	return "Restart Interval";
-	case V4L2_CID_JPEG_COMPRESSION_QUALITY:	return "Compression Quality";
-	case V4L2_CID_JPEG_ACTIVE_MARKER:	return "Active Markers";
-
-	/* Image source controls */
-	case V4L2_CID_IMAGE_SOURCE_CLASS:	return "Image Source Controls";
-	case V4L2_CID_VBLANK:			return "Vertical Blanking";
-	case V4L2_CID_HBLANK:			return "Horizontal Blanking";
-	case V4L2_CID_ANALOGUE_GAIN:		return "Analogue Gain";
-
-	/* Image processing controls */
-	case V4L2_CID_IMAGE_PROC_CLASS:		return "Image Processing Controls";
-	case V4L2_CID_LINK_FREQ:		return "Link Frequency";
-	case V4L2_CID_PIXEL_RATE:		return "Pixel Rate";
-
-	default:
-		return NULL;
-	}
-}
-EXPORT_SYMBOL(v4l2_ctrl_get_name);
-
-void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
-		    s32 *min, s32 *max, s32 *step, s32 *def, u32 *flags)
-{
-	*name = v4l2_ctrl_get_name(id);
-	*flags = 0;
-
-	switch (id) {
-	case V4L2_CID_AUDIO_MUTE:
-	case V4L2_CID_AUDIO_LOUDNESS:
-	case V4L2_CID_AUTO_WHITE_BALANCE:
-	case V4L2_CID_AUTOGAIN:
-	case V4L2_CID_HFLIP:
-	case V4L2_CID_VFLIP:
-	case V4L2_CID_HUE_AUTO:
-	case V4L2_CID_CHROMA_AGC:
-	case V4L2_CID_COLOR_KILLER:
-	case V4L2_CID_AUTOBRIGHTNESS:
-	case V4L2_CID_MPEG_AUDIO_MUTE:
-	case V4L2_CID_MPEG_VIDEO_MUTE:
-	case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE:
-	case V4L2_CID_MPEG_VIDEO_PULLDOWN:
-	case V4L2_CID_EXPOSURE_AUTO_PRIORITY:
-	case V4L2_CID_FOCUS_AUTO:
-	case V4L2_CID_PRIVACY:
-	case V4L2_CID_AUDIO_LIMITER_ENABLED:
-	case V4L2_CID_AUDIO_COMPRESSION_ENABLED:
-	case V4L2_CID_PILOT_TONE_ENABLED:
-	case V4L2_CID_ILLUMINATORS_1:
-	case V4L2_CID_ILLUMINATORS_2:
-	case V4L2_CID_FLASH_STROBE_STATUS:
-	case V4L2_CID_FLASH_CHARGE:
-	case V4L2_CID_FLASH_READY:
-	case V4L2_CID_MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER:
-	case V4L2_CID_MPEG_VIDEO_DECODER_SLICE_INTERFACE:
-	case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE:
-	case V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE:
-	case V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM:
-	case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_ENABLE:
-	case V4L2_CID_MPEG_VIDEO_MPEG4_QPEL:
-	case V4L2_CID_WIDE_DYNAMIC_RANGE:
-	case V4L2_CID_IMAGE_STABILIZATION:
-		*type = V4L2_CTRL_TYPE_BOOLEAN;
-		*min = 0;
-		*max = *step = 1;
-		break;
-	case V4L2_CID_PAN_RESET:
-	case V4L2_CID_TILT_RESET:
-	case V4L2_CID_FLASH_STROBE:
-	case V4L2_CID_FLASH_STROBE_STOP:
-	case V4L2_CID_AUTO_FOCUS_START:
-	case V4L2_CID_AUTO_FOCUS_STOP:
-		*type = V4L2_CTRL_TYPE_BUTTON;
-		*flags |= V4L2_CTRL_FLAG_WRITE_ONLY;
-		*min = *max = *step = *def = 0;
-		break;
-	case V4L2_CID_POWER_LINE_FREQUENCY:
-	case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
-	case V4L2_CID_MPEG_AUDIO_ENCODING:
-	case V4L2_CID_MPEG_AUDIO_L1_BITRATE:
-	case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
-	case V4L2_CID_MPEG_AUDIO_L3_BITRATE:
-	case V4L2_CID_MPEG_AUDIO_AC3_BITRATE:
-	case V4L2_CID_MPEG_AUDIO_MODE:
-	case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION:
-	case V4L2_CID_MPEG_AUDIO_EMPHASIS:
-	case V4L2_CID_MPEG_AUDIO_CRC:
-	case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK:
-	case V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK:
-	case V4L2_CID_MPEG_VIDEO_ENCODING:
-	case V4L2_CID_MPEG_VIDEO_ASPECT:
-	case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
-	case V4L2_CID_MPEG_STREAM_TYPE:
-	case V4L2_CID_MPEG_STREAM_VBI_FMT:
-	case V4L2_CID_EXPOSURE_AUTO:
-	case V4L2_CID_AUTO_FOCUS_RANGE:
-	case V4L2_CID_COLORFX:
-	case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE:
-	case V4L2_CID_TUNE_PREEMPHASIS:
-	case V4L2_CID_FLASH_LED_MODE:
-	case V4L2_CID_FLASH_STROBE_SOURCE:
-	case V4L2_CID_MPEG_VIDEO_HEADER_MODE:
-	case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE:
-	case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE:
-	case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
-	case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE:
-	case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
-	case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC:
-	case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL:
-	case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE:
-	case V4L2_CID_JPEG_CHROMA_SUBSAMPLING:
-	case V4L2_CID_ISO_SENSITIVITY_AUTO:
-	case V4L2_CID_EXPOSURE_METERING:
-	case V4L2_CID_SCENE_MODE:
-		*type = V4L2_CTRL_TYPE_MENU;
-		break;
-	case V4L2_CID_LINK_FREQ:
-		*type = V4L2_CTRL_TYPE_INTEGER_MENU;
-		break;
-	case V4L2_CID_RDS_TX_PS_NAME:
-	case V4L2_CID_RDS_TX_RADIO_TEXT:
-		*type = V4L2_CTRL_TYPE_STRING;
-		break;
-	case V4L2_CID_ISO_SENSITIVITY:
-	case V4L2_CID_AUTO_EXPOSURE_BIAS:
-		*type = V4L2_CTRL_TYPE_INTEGER_MENU;
-		break;
-	case V4L2_CID_USER_CLASS:
-	case V4L2_CID_CAMERA_CLASS:
-	case V4L2_CID_MPEG_CLASS:
-	case V4L2_CID_FM_TX_CLASS:
-	case V4L2_CID_FLASH_CLASS:
-	case V4L2_CID_JPEG_CLASS:
-	case V4L2_CID_IMAGE_SOURCE_CLASS:
-	case V4L2_CID_IMAGE_PROC_CLASS:
-		*type = V4L2_CTRL_TYPE_CTRL_CLASS;
-		/* You can neither read not write these */
-		*flags |= V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_WRITE_ONLY;
-		*min = *max = *step = *def = 0;
-		break;
-	case V4L2_CID_BG_COLOR:
-		*type = V4L2_CTRL_TYPE_INTEGER;
-		*step = 1;
-		*min = 0;
-		/* Max is calculated as RGB888 that is 2^24 */
-		*max = 0xFFFFFF;
-		break;
-	case V4L2_CID_FLASH_FAULT:
-	case V4L2_CID_JPEG_ACTIVE_MARKER:
-	case V4L2_CID_3A_LOCK:
-	case V4L2_CID_AUTO_FOCUS_STATUS:
-		*type = V4L2_CTRL_TYPE_BITMASK;
-		break;
-	case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE:
-	case V4L2_CID_MIN_BUFFERS_FOR_OUTPUT:
-		*type = V4L2_CTRL_TYPE_INTEGER;
-		*flags |= V4L2_CTRL_FLAG_READ_ONLY;
-		break;
-	case V4L2_CID_MPEG_VIDEO_DEC_FRAME:
-	case V4L2_CID_MPEG_VIDEO_DEC_PTS:
-		*flags |= V4L2_CTRL_FLAG_VOLATILE;
-		/* Fall through */
-	case V4L2_CID_PIXEL_RATE:
-		*type = V4L2_CTRL_TYPE_INTEGER64;
-		*flags |= V4L2_CTRL_FLAG_READ_ONLY;
-		*min = *max = *step = *def = 0;
-		break;
-	default:
-		*type = V4L2_CTRL_TYPE_INTEGER;
-		break;
-	}
-	switch (id) {
-	case V4L2_CID_MPEG_AUDIO_ENCODING:
-	case V4L2_CID_MPEG_AUDIO_MODE:
-	case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
-	case V4L2_CID_MPEG_VIDEO_B_FRAMES:
-	case V4L2_CID_MPEG_STREAM_TYPE:
-		*flags |= V4L2_CTRL_FLAG_UPDATE;
-		break;
-	case V4L2_CID_AUDIO_VOLUME:
-	case V4L2_CID_AUDIO_BALANCE:
-	case V4L2_CID_AUDIO_BASS:
-	case V4L2_CID_AUDIO_TREBLE:
-	case V4L2_CID_BRIGHTNESS:
-	case V4L2_CID_CONTRAST:
-	case V4L2_CID_SATURATION:
-	case V4L2_CID_HUE:
-	case V4L2_CID_RED_BALANCE:
-	case V4L2_CID_BLUE_BALANCE:
-	case V4L2_CID_GAMMA:
-	case V4L2_CID_SHARPNESS:
-	case V4L2_CID_CHROMA_GAIN:
-	case V4L2_CID_RDS_TX_DEVIATION:
-	case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME:
-	case V4L2_CID_AUDIO_LIMITER_DEVIATION:
-	case V4L2_CID_AUDIO_COMPRESSION_GAIN:
-	case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD:
-	case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME:
-	case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME:
-	case V4L2_CID_PILOT_TONE_DEVIATION:
-	case V4L2_CID_PILOT_TONE_FREQUENCY:
-	case V4L2_CID_TUNE_POWER_LEVEL:
-	case V4L2_CID_TUNE_ANTENNA_CAPACITOR:
-		*flags |= V4L2_CTRL_FLAG_SLIDER;
-		break;
-	case V4L2_CID_PAN_RELATIVE:
-	case V4L2_CID_TILT_RELATIVE:
-	case V4L2_CID_FOCUS_RELATIVE:
-	case V4L2_CID_IRIS_RELATIVE:
-	case V4L2_CID_ZOOM_RELATIVE:
-		*flags |= V4L2_CTRL_FLAG_WRITE_ONLY;
-		break;
-	case V4L2_CID_FLASH_STROBE_STATUS:
-	case V4L2_CID_AUTO_FOCUS_STATUS:
-	case V4L2_CID_FLASH_READY:
-		*flags |= V4L2_CTRL_FLAG_READ_ONLY;
-		break;
-	}
-}
-EXPORT_SYMBOL(v4l2_ctrl_fill);
-
-/* Helper function to determine whether the control type is compatible with
-   VIDIOC_G/S_CTRL. */
-static bool type_is_int(const struct v4l2_ctrl *ctrl)
-{
-	switch (ctrl->type) {
-	case V4L2_CTRL_TYPE_INTEGER64:
-	case V4L2_CTRL_TYPE_STRING:
-		/* Nope, these need v4l2_ext_control */
-		return false;
-	default:
-		return true;
-	}
-}
-
-static void fill_event(struct v4l2_event *ev, struct v4l2_ctrl *ctrl, u32 changes)
-{
-	memset(ev->reserved, 0, sizeof(ev->reserved));
-	ev->type = V4L2_EVENT_CTRL;
-	ev->id = ctrl->id;
-	ev->u.ctrl.changes = changes;
-	ev->u.ctrl.type = ctrl->type;
-	ev->u.ctrl.flags = ctrl->flags;
-	if (ctrl->type == V4L2_CTRL_TYPE_STRING)
-		ev->u.ctrl.value64 = 0;
-	else
-		ev->u.ctrl.value64 = ctrl->cur.val64;
-	ev->u.ctrl.minimum = ctrl->minimum;
-	ev->u.ctrl.maximum = ctrl->maximum;
-	if (ctrl->type == V4L2_CTRL_TYPE_MENU
-	    || ctrl->type == V4L2_CTRL_TYPE_INTEGER_MENU)
-		ev->u.ctrl.step = 1;
-	else
-		ev->u.ctrl.step = ctrl->step;
-	ev->u.ctrl.default_value = ctrl->default_value;
-}
-
-static void send_event(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 changes)
-{
-	struct v4l2_event ev;
-	struct v4l2_subscribed_event *sev;
-
-	if (list_empty(&ctrl->ev_subs))
-		return;
-	fill_event(&ev, ctrl, changes);
-
-	list_for_each_entry(sev, &ctrl->ev_subs, node)
-		if (sev->fh != fh ||
-		    (sev->flags & V4L2_EVENT_SUB_FL_ALLOW_FEEDBACK))
-			v4l2_event_queue_fh(sev->fh, &ev);
-}
-
-/* Helper function: copy the current control value back to the caller */
-static int cur_to_user(struct v4l2_ext_control *c,
-		       struct v4l2_ctrl *ctrl)
-{
-	u32 len;
-
-	switch (ctrl->type) {
-	case V4L2_CTRL_TYPE_STRING:
-		len = strlen(ctrl->cur.string);
-		if (c->size < len + 1) {
-			c->size = len + 1;
-			return -ENOSPC;
-		}
-		return copy_to_user(c->string, ctrl->cur.string,
-						len + 1) ? -EFAULT : 0;
-	case V4L2_CTRL_TYPE_INTEGER64:
-		c->value64 = ctrl->cur.val64;
-		break;
-	default:
-		c->value = ctrl->cur.val;
-		break;
-	}
-	return 0;
-}
-
-/* Helper function: copy the caller-provider value as the new control value */
-static int user_to_new(struct v4l2_ext_control *c,
-		       struct v4l2_ctrl *ctrl)
-{
-	int ret;
-	u32 size;
-
-	ctrl->is_new = 1;
-	switch (ctrl->type) {
-	case V4L2_CTRL_TYPE_INTEGER64:
-		ctrl->val64 = c->value64;
-		break;
-	case V4L2_CTRL_TYPE_STRING:
-		size = c->size;
-		if (size == 0)
-			return -ERANGE;
-		if (size > ctrl->maximum + 1)
-			size = ctrl->maximum + 1;
-		ret = copy_from_user(ctrl->string, c->string, size);
-		if (!ret) {
-			char last = ctrl->string[size - 1];
-
-			ctrl->string[size - 1] = 0;
-			/* If the string was longer than ctrl->maximum,
-			   then return an error. */
-			if (strlen(ctrl->string) == ctrl->maximum && last)
-				return -ERANGE;
-		}
-		return ret ? -EFAULT : 0;
-	default:
-		ctrl->val = c->value;
-		break;
-	}
-	return 0;
-}
-
-/* Helper function: copy the new control value back to the caller */
-static int new_to_user(struct v4l2_ext_control *c,
-		       struct v4l2_ctrl *ctrl)
-{
-	u32 len;
-
-	switch (ctrl->type) {
-	case V4L2_CTRL_TYPE_STRING:
-		len = strlen(ctrl->string);
-		if (c->size < len + 1) {
-			c->size = ctrl->maximum + 1;
-			return -ENOSPC;
-		}
-		return copy_to_user(c->string, ctrl->string,
-						len + 1) ? -EFAULT : 0;
-	case V4L2_CTRL_TYPE_INTEGER64:
-		c->value64 = ctrl->val64;
-		break;
-	default:
-		c->value = ctrl->val;
-		break;
-	}
-	return 0;
-}
-
-/* Copy the new value to the current value. */
-static void new_to_cur(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl,
-						bool update_inactive)
-{
-	bool changed = false;
-
-	if (ctrl == NULL)
-		return;
-	switch (ctrl->type) {
-	case V4L2_CTRL_TYPE_BUTTON:
-		changed = true;
-		break;
-	case V4L2_CTRL_TYPE_STRING:
-		/* strings are always 0-terminated */
-		changed = strcmp(ctrl->string, ctrl->cur.string);
-		strcpy(ctrl->cur.string, ctrl->string);
-		break;
-	case V4L2_CTRL_TYPE_INTEGER64:
-		changed = ctrl->val64 != ctrl->cur.val64;
-		ctrl->cur.val64 = ctrl->val64;
-		break;
-	default:
-		changed = ctrl->val != ctrl->cur.val;
-		ctrl->cur.val = ctrl->val;
-		break;
-	}
-	if (update_inactive) {
-		/* Note: update_inactive can only be true for auto clusters. */
-		ctrl->flags &=
-			~(V4L2_CTRL_FLAG_INACTIVE | V4L2_CTRL_FLAG_VOLATILE);
-		if (!is_cur_manual(ctrl->cluster[0])) {
-			ctrl->flags |= V4L2_CTRL_FLAG_INACTIVE;
-			if (ctrl->cluster[0]->has_volatiles)
-				ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
-		}
-		fh = NULL;
-	}
-	if (changed || update_inactive) {
-		/* If a control was changed that was not one of the controls
-		   modified by the application, then send the event to all. */
-		if (!ctrl->is_new)
-			fh = NULL;
-		send_event(fh, ctrl,
-			(changed ? V4L2_EVENT_CTRL_CH_VALUE : 0) |
-			(update_inactive ? V4L2_EVENT_CTRL_CH_FLAGS : 0));
-	}
-}
-
-/* Copy the current value to the new value */
-static void cur_to_new(struct v4l2_ctrl *ctrl)
-{
-	if (ctrl == NULL)
-		return;
-	switch (ctrl->type) {
-	case V4L2_CTRL_TYPE_STRING:
-		/* strings are always 0-terminated */
-		strcpy(ctrl->string, ctrl->cur.string);
-		break;
-	case V4L2_CTRL_TYPE_INTEGER64:
-		ctrl->val64 = ctrl->cur.val64;
-		break;
-	default:
-		ctrl->val = ctrl->cur.val;
-		break;
-	}
-}
-
-/* Return non-zero if one or more of the controls in the cluster has a new
-   value that differs from the current value. */
-static int cluster_changed(struct v4l2_ctrl *master)
-{
-	int diff = 0;
-	int i;
-
-	for (i = 0; !diff && i < master->ncontrols; i++) {
-		struct v4l2_ctrl *ctrl = master->cluster[i];
-
-		if (ctrl == NULL)
-			continue;
-		switch (ctrl->type) {
-		case V4L2_CTRL_TYPE_BUTTON:
-			/* Button controls are always 'different' */
-			return 1;
-		case V4L2_CTRL_TYPE_STRING:
-			/* strings are always 0-terminated */
-			diff = strcmp(ctrl->string, ctrl->cur.string);
-			break;
-		case V4L2_CTRL_TYPE_INTEGER64:
-			diff = ctrl->val64 != ctrl->cur.val64;
-			break;
-		default:
-			diff = ctrl->val != ctrl->cur.val;
-			break;
-		}
-	}
-	return diff;
-}
-
-/* Validate integer-type control */
-static int validate_new_int(const struct v4l2_ctrl *ctrl, s32 *pval)
-{
-	s32 val = *pval;
-	u32 offset;
-
-	switch (ctrl->type) {
-	case V4L2_CTRL_TYPE_INTEGER:
-		/* Round towards the closest legal value */
-		val += ctrl->step / 2;
-		if (val < ctrl->minimum)
-			val = ctrl->minimum;
-		if (val > ctrl->maximum)
-			val = ctrl->maximum;
-		offset = val - ctrl->minimum;
-		offset = ctrl->step * (offset / ctrl->step);
-		val = ctrl->minimum + offset;
-		*pval = val;
-		return 0;
-
-	case V4L2_CTRL_TYPE_BOOLEAN:
-		*pval = !!val;
-		return 0;
-
-	case V4L2_CTRL_TYPE_MENU:
-	case V4L2_CTRL_TYPE_INTEGER_MENU:
-		if (val < ctrl->minimum || val > ctrl->maximum)
-			return -ERANGE;
-		if (ctrl->menu_skip_mask & (1 << val))
-			return -EINVAL;
-		if (ctrl->type == V4L2_CTRL_TYPE_MENU &&
-		    ctrl->qmenu[val][0] == '\0')
-			return -EINVAL;
-		return 0;
-
-	case V4L2_CTRL_TYPE_BITMASK:
-		*pval &= ctrl->maximum;
-		return 0;
-
-	case V4L2_CTRL_TYPE_BUTTON:
-	case V4L2_CTRL_TYPE_CTRL_CLASS:
-		*pval = 0;
-		return 0;
-
-	default:
-		return -EINVAL;
-	}
-}
-
-/* Validate a new control */
-static int validate_new(const struct v4l2_ctrl *ctrl, struct v4l2_ext_control *c)
-{
-	char *s = c->string;
-	size_t len;
-
-	switch (ctrl->type) {
-	case V4L2_CTRL_TYPE_INTEGER:
-	case V4L2_CTRL_TYPE_BOOLEAN:
-	case V4L2_CTRL_TYPE_MENU:
-	case V4L2_CTRL_TYPE_INTEGER_MENU:
-	case V4L2_CTRL_TYPE_BITMASK:
-	case V4L2_CTRL_TYPE_BUTTON:
-	case V4L2_CTRL_TYPE_CTRL_CLASS:
-		return validate_new_int(ctrl, &c->value);
-
-	case V4L2_CTRL_TYPE_INTEGER64:
-		return 0;
-
-	case V4L2_CTRL_TYPE_STRING:
-		len = strlen(s);
-		if (len < ctrl->minimum)
-			return -ERANGE;
-		if ((len - ctrl->minimum) % ctrl->step)
-			return -ERANGE;
-		return 0;
-
-	default:
-		return -EINVAL;
-	}
-}
-
-static inline u32 node2id(struct list_head *node)
-{
-	return list_entry(node, struct v4l2_ctrl_ref, node)->ctrl->id;
-}
-
-/* Set the handler's error code if it wasn't set earlier already */
-static inline int handler_set_err(struct v4l2_ctrl_handler *hdl, int err)
-{
-	if (hdl->error == 0)
-		hdl->error = err;
-	return err;
-}
-
-/* Initialize the handler */
-int v4l2_ctrl_handler_init(struct v4l2_ctrl_handler *hdl,
-			   unsigned nr_of_controls_hint)
-{
-	hdl->lock = &hdl->_lock;
-	mutex_init(hdl->lock);
-	INIT_LIST_HEAD(&hdl->ctrls);
-	INIT_LIST_HEAD(&hdl->ctrl_refs);
-	hdl->nr_of_buckets = 1 + nr_of_controls_hint / 8;
-	hdl->buckets = kcalloc(hdl->nr_of_buckets, sizeof(hdl->buckets[0]),
-			       GFP_KERNEL);
-	hdl->error = hdl->buckets ? 0 : -ENOMEM;
-	return hdl->error;
-}
-EXPORT_SYMBOL(v4l2_ctrl_handler_init);
-
-/* Free all controls and control refs */
-void v4l2_ctrl_handler_free(struct v4l2_ctrl_handler *hdl)
-{
-	struct v4l2_ctrl_ref *ref, *next_ref;
-	struct v4l2_ctrl *ctrl, *next_ctrl;
-	struct v4l2_subscribed_event *sev, *next_sev;
-
-	if (hdl == NULL || hdl->buckets == NULL)
-		return;
-
-	mutex_lock(hdl->lock);
-	/* Free all nodes */
-	list_for_each_entry_safe(ref, next_ref, &hdl->ctrl_refs, node) {
-		list_del(&ref->node);
-		kfree(ref);
-	}
-	/* Free all controls owned by the handler */
-	list_for_each_entry_safe(ctrl, next_ctrl, &hdl->ctrls, node) {
-		list_del(&ctrl->node);
-		list_for_each_entry_safe(sev, next_sev, &ctrl->ev_subs, node)
-			list_del(&sev->node);
-		kfree(ctrl);
-	}
-	kfree(hdl->buckets);
-	hdl->buckets = NULL;
-	hdl->cached = NULL;
-	hdl->error = 0;
-	mutex_unlock(hdl->lock);
-}
-EXPORT_SYMBOL(v4l2_ctrl_handler_free);
-
-/* For backwards compatibility: V4L2_CID_PRIVATE_BASE should no longer
-   be used except in G_CTRL, S_CTRL, QUERYCTRL and QUERYMENU when dealing
-   with applications that do not use the NEXT_CTRL flag.
-
-   We just find the n-th private user control. It's O(N), but that should not
-   be an issue in this particular case. */
-static struct v4l2_ctrl_ref *find_private_ref(
-		struct v4l2_ctrl_handler *hdl, u32 id)
-{
-	struct v4l2_ctrl_ref *ref;
-
-	id -= V4L2_CID_PRIVATE_BASE;
-	list_for_each_entry(ref, &hdl->ctrl_refs, node) {
-		/* Search for private user controls that are compatible with
-		   VIDIOC_G/S_CTRL. */
-		if (V4L2_CTRL_ID2CLASS(ref->ctrl->id) == V4L2_CTRL_CLASS_USER &&
-		    V4L2_CTRL_DRIVER_PRIV(ref->ctrl->id)) {
-			if (!type_is_int(ref->ctrl))
-				continue;
-			if (id == 0)
-				return ref;
-			id--;
-		}
-	}
-	return NULL;
-}
-
-/* Find a control with the given ID. */
-static struct v4l2_ctrl_ref *find_ref(struct v4l2_ctrl_handler *hdl, u32 id)
-{
-	struct v4l2_ctrl_ref *ref;
-	int bucket;
-
-	id &= V4L2_CTRL_ID_MASK;
-
-	/* Old-style private controls need special handling */
-	if (id >= V4L2_CID_PRIVATE_BASE)
-		return find_private_ref(hdl, id);
-	bucket = id % hdl->nr_of_buckets;
-
-	/* Simple optimization: cache the last control found */
-	if (hdl->cached && hdl->cached->ctrl->id == id)
-		return hdl->cached;
-
-	/* Not in cache, search the hash */
-	ref = hdl->buckets ? hdl->buckets[bucket] : NULL;
-	while (ref && ref->ctrl->id != id)
-		ref = ref->next;
-
-	if (ref)
-		hdl->cached = ref; /* cache it! */
-	return ref;
-}
-
-/* Find a control with the given ID. Take the handler's lock first. */
-static struct v4l2_ctrl_ref *find_ref_lock(
-		struct v4l2_ctrl_handler *hdl, u32 id)
-{
-	struct v4l2_ctrl_ref *ref = NULL;
-
-	if (hdl) {
-		mutex_lock(hdl->lock);
-		ref = find_ref(hdl, id);
-		mutex_unlock(hdl->lock);
-	}
-	return ref;
-}
-
-/* Find a control with the given ID. */
-struct v4l2_ctrl *v4l2_ctrl_find(struct v4l2_ctrl_handler *hdl, u32 id)
-{
-	struct v4l2_ctrl_ref *ref = find_ref_lock(hdl, id);
-
-	return ref ? ref->ctrl : NULL;
-}
-EXPORT_SYMBOL(v4l2_ctrl_find);
-
-/* Allocate a new v4l2_ctrl_ref and hook it into the handler. */
-static int handler_new_ref(struct v4l2_ctrl_handler *hdl,
-			   struct v4l2_ctrl *ctrl)
-{
-	struct v4l2_ctrl_ref *ref;
-	struct v4l2_ctrl_ref *new_ref;
-	u32 id = ctrl->id;
-	u32 class_ctrl = V4L2_CTRL_ID2CLASS(id) | 1;
-	int bucket = id % hdl->nr_of_buckets;	/* which bucket to use */
-
-	/* Automatically add the control class if it is not yet present. */
-	if (id != class_ctrl && find_ref_lock(hdl, class_ctrl) == NULL)
-		if (!v4l2_ctrl_new_std(hdl, NULL, class_ctrl, 0, 0, 0, 0))
-			return hdl->error;
-
-	if (hdl->error)
-		return hdl->error;
-
-	new_ref = kzalloc(sizeof(*new_ref), GFP_KERNEL);
-	if (!new_ref)
-		return handler_set_err(hdl, -ENOMEM);
-	new_ref->ctrl = ctrl;
-	if (ctrl->handler == hdl) {
-		/* By default each control starts in a cluster of its own.
-		   new_ref->ctrl is basically a cluster array with one
-		   element, so that's perfect to use as the cluster pointer.
-		   But only do this for the handler that owns the control. */
-		ctrl->cluster = &new_ref->ctrl;
-		ctrl->ncontrols = 1;
-	}
-
-	INIT_LIST_HEAD(&new_ref->node);
-
-	mutex_lock(hdl->lock);
-
-	/* Add immediately at the end of the list if the list is empty, or if
-	   the last element in the list has a lower ID.
-	   This ensures that when elements are added in ascending order the
-	   insertion is an O(1) operation. */
-	if (list_empty(&hdl->ctrl_refs) || id > node2id(hdl->ctrl_refs.prev)) {
-		list_add_tail(&new_ref->node, &hdl->ctrl_refs);
-		goto insert_in_hash;
-	}
-
-	/* Find insert position in sorted list */
-	list_for_each_entry(ref, &hdl->ctrl_refs, node) {
-		if (ref->ctrl->id < id)
-			continue;
-		/* Don't add duplicates */
-		if (ref->ctrl->id == id) {
-			kfree(new_ref);
-			goto unlock;
-		}
-		list_add(&new_ref->node, ref->node.prev);
-		break;
-	}
-
-insert_in_hash:
-	/* Insert the control node in the hash */
-	new_ref->next = hdl->buckets[bucket];
-	hdl->buckets[bucket] = new_ref;
-
-unlock:
-	mutex_unlock(hdl->lock);
-	return 0;
-}
-
-/* Add a new control */
-static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl,
-			const struct v4l2_ctrl_ops *ops,
-			u32 id, const char *name, enum v4l2_ctrl_type type,
-			s32 min, s32 max, u32 step, s32 def,
-			u32 flags, const char * const *qmenu,
-			const s64 *qmenu_int, void *priv)
-{
-	struct v4l2_ctrl *ctrl;
-	unsigned sz_extra = 0;
-
-	if (hdl->error)
-		return NULL;
-
-	/* Sanity checks */
-	if (id == 0 || name == NULL || id >= V4L2_CID_PRIVATE_BASE ||
-	    (type == V4L2_CTRL_TYPE_INTEGER && step == 0) ||
-	    (type == V4L2_CTRL_TYPE_BITMASK && max == 0) ||
-	    (type == V4L2_CTRL_TYPE_MENU && qmenu == NULL) ||
-	    (type == V4L2_CTRL_TYPE_INTEGER_MENU && qmenu_int == NULL) ||
-	    (type == V4L2_CTRL_TYPE_STRING && max == 0)) {
-		handler_set_err(hdl, -ERANGE);
-		return NULL;
-	}
-	if (type != V4L2_CTRL_TYPE_BITMASK && max < min) {
-		handler_set_err(hdl, -ERANGE);
-		return NULL;
-	}
-	if ((type == V4L2_CTRL_TYPE_INTEGER ||
-	     type == V4L2_CTRL_TYPE_MENU ||
-	     type == V4L2_CTRL_TYPE_INTEGER_MENU ||
-	     type == V4L2_CTRL_TYPE_BOOLEAN) &&
-	    (def < min || def > max)) {
-		handler_set_err(hdl, -ERANGE);
-		return NULL;
-	}
-	if (type == V4L2_CTRL_TYPE_BITMASK && ((def & ~max) || min || step)) {
-		handler_set_err(hdl, -ERANGE);
-		return NULL;
-	}
-
-	if (type == V4L2_CTRL_TYPE_BUTTON)
-		flags |= V4L2_CTRL_FLAG_WRITE_ONLY;
-	else if (type == V4L2_CTRL_TYPE_CTRL_CLASS)
-		flags |= V4L2_CTRL_FLAG_READ_ONLY;
-	else if (type == V4L2_CTRL_TYPE_STRING)
-		sz_extra += 2 * (max + 1);
-
-	ctrl = kzalloc(sizeof(*ctrl) + sz_extra, GFP_KERNEL);
-	if (ctrl == NULL) {
-		handler_set_err(hdl, -ENOMEM);
-		return NULL;
-	}
-
-	INIT_LIST_HEAD(&ctrl->node);
-	INIT_LIST_HEAD(&ctrl->ev_subs);
-	ctrl->handler = hdl;
-	ctrl->ops = ops;
-	ctrl->id = id;
-	ctrl->name = name;
-	ctrl->type = type;
-	ctrl->flags = flags;
-	ctrl->minimum = min;
-	ctrl->maximum = max;
-	ctrl->step = step;
-	if (type == V4L2_CTRL_TYPE_MENU)
-		ctrl->qmenu = qmenu;
-	else if (type == V4L2_CTRL_TYPE_INTEGER_MENU)
-		ctrl->qmenu_int = qmenu_int;
-	ctrl->priv = priv;
-	ctrl->cur.val = ctrl->val = ctrl->default_value = def;
-
-	if (ctrl->type == V4L2_CTRL_TYPE_STRING) {
-		ctrl->cur.string = (char *)&ctrl[1] + sz_extra - (max + 1);
-		ctrl->string = (char *)&ctrl[1] + sz_extra - 2 * (max + 1);
-		if (ctrl->minimum)
-			memset(ctrl->cur.string, ' ', ctrl->minimum);
-	}
-	if (handler_new_ref(hdl, ctrl)) {
-		kfree(ctrl);
-		return NULL;
-	}
-	mutex_lock(hdl->lock);
-	list_add_tail(&ctrl->node, &hdl->ctrls);
-	mutex_unlock(hdl->lock);
-	return ctrl;
-}
-
-struct v4l2_ctrl *v4l2_ctrl_new_custom(struct v4l2_ctrl_handler *hdl,
-			const struct v4l2_ctrl_config *cfg, void *priv)
-{
-	bool is_menu;
-	struct v4l2_ctrl *ctrl;
-	const char *name = cfg->name;
-	const char * const *qmenu = cfg->qmenu;
-	const s64 *qmenu_int = cfg->qmenu_int;
-	enum v4l2_ctrl_type type = cfg->type;
-	u32 flags = cfg->flags;
-	s32 min = cfg->min;
-	s32 max = cfg->max;
-	u32 step = cfg->step;
-	s32 def = cfg->def;
-
-	if (name == NULL)
-		v4l2_ctrl_fill(cfg->id, &name, &type, &min, &max, &step,
-								&def, &flags);
-
-	is_menu = (cfg->type == V4L2_CTRL_TYPE_MENU ||
-		   cfg->type == V4L2_CTRL_TYPE_INTEGER_MENU);
-	if (is_menu)
-		WARN_ON(step);
-	else
-		WARN_ON(cfg->menu_skip_mask);
-	if (cfg->type == V4L2_CTRL_TYPE_MENU && qmenu == NULL)
-		qmenu = v4l2_ctrl_get_menu(cfg->id);
-	else if (cfg->type == V4L2_CTRL_TYPE_INTEGER_MENU &&
-		 qmenu_int == NULL) {
-		handler_set_err(hdl, -EINVAL);
-		return NULL;
-	}
-
-	ctrl = v4l2_ctrl_new(hdl, cfg->ops, cfg->id, name,
-			type, min, max,
-			is_menu ? cfg->menu_skip_mask : step,
-			def, flags, qmenu, qmenu_int, priv);
-	if (ctrl)
-		ctrl->is_private = cfg->is_private;
-	return ctrl;
-}
-EXPORT_SYMBOL(v4l2_ctrl_new_custom);
-
-/* Helper function for standard non-menu controls */
-struct v4l2_ctrl *v4l2_ctrl_new_std(struct v4l2_ctrl_handler *hdl,
-			const struct v4l2_ctrl_ops *ops,
-			u32 id, s32 min, s32 max, u32 step, s32 def)
-{
-	const char *name;
-	enum v4l2_ctrl_type type;
-	u32 flags;
-
-	v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags);
-	if (type == V4L2_CTRL_TYPE_MENU
-	    || type == V4L2_CTRL_TYPE_INTEGER_MENU) {
-		handler_set_err(hdl, -EINVAL);
-		return NULL;
-	}
-	return v4l2_ctrl_new(hdl, ops, id, name, type,
-			     min, max, step, def, flags, NULL, NULL, NULL);
-}
-EXPORT_SYMBOL(v4l2_ctrl_new_std);
-
-/* Helper function for standard menu controls */
-struct v4l2_ctrl *v4l2_ctrl_new_std_menu(struct v4l2_ctrl_handler *hdl,
-			const struct v4l2_ctrl_ops *ops,
-			u32 id, s32 max, s32 mask, s32 def)
-{
-	const char * const *qmenu = v4l2_ctrl_get_menu(id);
-	const char *name;
-	enum v4l2_ctrl_type type;
-	s32 min;
-	s32 step;
-	u32 flags;
-
-	v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags);
-	if (type != V4L2_CTRL_TYPE_MENU) {
-		handler_set_err(hdl, -EINVAL);
-		return NULL;
-	}
-	return v4l2_ctrl_new(hdl, ops, id, name, type,
-			     0, max, mask, def, flags, qmenu, NULL, NULL);
-}
-EXPORT_SYMBOL(v4l2_ctrl_new_std_menu);
-
-/* Helper function for standard integer menu controls */
-struct v4l2_ctrl *v4l2_ctrl_new_int_menu(struct v4l2_ctrl_handler *hdl,
-			const struct v4l2_ctrl_ops *ops,
-			u32 id, s32 max, s32 def, const s64 *qmenu_int)
-{
-	const char *name;
-	enum v4l2_ctrl_type type;
-	s32 min;
-	s32 step;
-	u32 flags;
-
-	v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags);
-	if (type != V4L2_CTRL_TYPE_INTEGER_MENU) {
-		handler_set_err(hdl, -EINVAL);
-		return NULL;
-	}
-	return v4l2_ctrl_new(hdl, ops, id, name, type,
-			     0, max, 0, def, flags, NULL, qmenu_int, NULL);
-}
-EXPORT_SYMBOL(v4l2_ctrl_new_int_menu);
-
-/* Add a control from another handler to this handler */
-struct v4l2_ctrl *v4l2_ctrl_add_ctrl(struct v4l2_ctrl_handler *hdl,
-					  struct v4l2_ctrl *ctrl)
-{
-	if (hdl == NULL || hdl->error)
-		return NULL;
-	if (ctrl == NULL) {
-		handler_set_err(hdl, -EINVAL);
-		return NULL;
-	}
-	if (ctrl->handler == hdl)
-		return ctrl;
-	return handler_new_ref(hdl, ctrl) ? NULL : ctrl;
-}
-EXPORT_SYMBOL(v4l2_ctrl_add_ctrl);
-
-/* Add the controls from another handler to our own. */
-int v4l2_ctrl_add_handler(struct v4l2_ctrl_handler *hdl,
-			  struct v4l2_ctrl_handler *add)
-{
-	struct v4l2_ctrl_ref *ref;
-	int ret = 0;
-
-	/* Do nothing if either handler is NULL or if they are the same */
-	if (!hdl || !add || hdl == add)
-		return 0;
-	if (hdl->error)
-		return hdl->error;
-	mutex_lock(add->lock);
-	list_for_each_entry(ref, &add->ctrl_refs, node) {
-		struct v4l2_ctrl *ctrl = ref->ctrl;
-
-		/* Skip handler-private controls. */
-		if (ctrl->is_private)
-			continue;
-		/* And control classes */
-		if (ctrl->type == V4L2_CTRL_TYPE_CTRL_CLASS)
-			continue;
-		ret = handler_new_ref(hdl, ctrl);
-		if (ret)
-			break;
-	}
-	mutex_unlock(add->lock);
-	return ret;
-}
-EXPORT_SYMBOL(v4l2_ctrl_add_handler);
-
-/* Cluster controls */
-void v4l2_ctrl_cluster(unsigned ncontrols, struct v4l2_ctrl **controls)
-{
-	bool has_volatiles = false;
-	int i;
-
-	/* The first control is the master control and it must not be NULL */
-	BUG_ON(ncontrols == 0 || controls[0] == NULL);
-
-	for (i = 0; i < ncontrols; i++) {
-		if (controls[i]) {
-			controls[i]->cluster = controls;
-			controls[i]->ncontrols = ncontrols;
-			if (controls[i]->flags & V4L2_CTRL_FLAG_VOLATILE)
-				has_volatiles = true;
-		}
-	}
-	controls[0]->has_volatiles = has_volatiles;
-}
-EXPORT_SYMBOL(v4l2_ctrl_cluster);
-
-void v4l2_ctrl_auto_cluster(unsigned ncontrols, struct v4l2_ctrl **controls,
-			    u8 manual_val, bool set_volatile)
-{
-	struct v4l2_ctrl *master = controls[0];
-	u32 flag = 0;
-	int i;
-
-	v4l2_ctrl_cluster(ncontrols, controls);
-	WARN_ON(ncontrols <= 1);
-	WARN_ON(manual_val < master->minimum || manual_val > master->maximum);
-	WARN_ON(set_volatile && !has_op(master, g_volatile_ctrl));
-	master->is_auto = true;
-	master->has_volatiles = set_volatile;
-	master->manual_mode_value = manual_val;
-	master->flags |= V4L2_CTRL_FLAG_UPDATE;
-
-	if (!is_cur_manual(master))
-		flag = V4L2_CTRL_FLAG_INACTIVE |
-			(set_volatile ? V4L2_CTRL_FLAG_VOLATILE : 0);
-
-	for (i = 1; i < ncontrols; i++)
-		if (controls[i])
-			controls[i]->flags |= flag;
-}
-EXPORT_SYMBOL(v4l2_ctrl_auto_cluster);
-
-/* Activate/deactivate a control. */
-void v4l2_ctrl_activate(struct v4l2_ctrl *ctrl, bool active)
-{
-	/* invert since the actual flag is called 'inactive' */
-	bool inactive = !active;
-	bool old;
-
-	if (ctrl == NULL)
-		return;
-
-	if (inactive)
-		/* set V4L2_CTRL_FLAG_INACTIVE */
-		old = test_and_set_bit(4, &ctrl->flags);
-	else
-		/* clear V4L2_CTRL_FLAG_INACTIVE */
-		old = test_and_clear_bit(4, &ctrl->flags);
-	if (old != inactive)
-		send_event(NULL, ctrl, V4L2_EVENT_CTRL_CH_FLAGS);
-}
-EXPORT_SYMBOL(v4l2_ctrl_activate);
-
-/* Grab/ungrab a control.
-   Typically used when streaming starts and you want to grab controls,
-   preventing the user from changing them.
-
-   Just call this and the framework will block any attempts to change
-   these controls. */
-void v4l2_ctrl_grab(struct v4l2_ctrl *ctrl, bool grabbed)
-{
-	bool old;
-
-	if (ctrl == NULL)
-		return;
-
-	v4l2_ctrl_lock(ctrl);
-	if (grabbed)
-		/* set V4L2_CTRL_FLAG_GRABBED */
-		old = test_and_set_bit(1, &ctrl->flags);
-	else
-		/* clear V4L2_CTRL_FLAG_GRABBED */
-		old = test_and_clear_bit(1, &ctrl->flags);
-	if (old != grabbed)
-		send_event(NULL, ctrl, V4L2_EVENT_CTRL_CH_FLAGS);
-	v4l2_ctrl_unlock(ctrl);
-}
-EXPORT_SYMBOL(v4l2_ctrl_grab);
-
-/* Log the control name and value */
-static void log_ctrl(const struct v4l2_ctrl *ctrl,
-		     const char *prefix, const char *colon)
-{
-	if (ctrl->flags & (V4L2_CTRL_FLAG_DISABLED | V4L2_CTRL_FLAG_WRITE_ONLY))
-		return;
-	if (ctrl->type == V4L2_CTRL_TYPE_CTRL_CLASS)
-		return;
-
-	printk(KERN_INFO "%s%s%s: ", prefix, colon, ctrl->name);
-
-	switch (ctrl->type) {
-	case V4L2_CTRL_TYPE_INTEGER:
-		printk(KERN_CONT "%d", ctrl->cur.val);
-		break;
-	case V4L2_CTRL_TYPE_BOOLEAN:
-		printk(KERN_CONT "%s", ctrl->cur.val ? "true" : "false");
-		break;
-	case V4L2_CTRL_TYPE_MENU:
-		printk(KERN_CONT "%s", ctrl->qmenu[ctrl->cur.val]);
-		break;
-	case V4L2_CTRL_TYPE_INTEGER_MENU:
-		printk(KERN_CONT "%lld", ctrl->qmenu_int[ctrl->cur.val]);
-		break;
-	case V4L2_CTRL_TYPE_BITMASK:
-		printk(KERN_CONT "0x%08x", ctrl->cur.val);
-		break;
-	case V4L2_CTRL_TYPE_INTEGER64:
-		printk(KERN_CONT "%lld", ctrl->cur.val64);
-		break;
-	case V4L2_CTRL_TYPE_STRING:
-		printk(KERN_CONT "%s", ctrl->cur.string);
-		break;
-	default:
-		printk(KERN_CONT "unknown type %d", ctrl->type);
-		break;
-	}
-	if (ctrl->flags & (V4L2_CTRL_FLAG_INACTIVE |
-			   V4L2_CTRL_FLAG_GRABBED |
-			   V4L2_CTRL_FLAG_VOLATILE)) {
-		if (ctrl->flags & V4L2_CTRL_FLAG_INACTIVE)
-			printk(KERN_CONT " inactive");
-		if (ctrl->flags & V4L2_CTRL_FLAG_GRABBED)
-			printk(KERN_CONT " grabbed");
-		if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE)
-			printk(KERN_CONT " volatile");
-	}
-	printk(KERN_CONT "\n");
-}
-
-/* Log all controls owned by the handler */
-void v4l2_ctrl_handler_log_status(struct v4l2_ctrl_handler *hdl,
-				  const char *prefix)
-{
-	struct v4l2_ctrl *ctrl;
-	const char *colon = "";
-	int len;
-
-	if (hdl == NULL)
-		return;
-	if (prefix == NULL)
-		prefix = "";
-	len = strlen(prefix);
-	if (len && prefix[len - 1] != ' ')
-		colon = ": ";
-	mutex_lock(hdl->lock);
-	list_for_each_entry(ctrl, &hdl->ctrls, node)
-		if (!(ctrl->flags & V4L2_CTRL_FLAG_DISABLED))
-			log_ctrl(ctrl, prefix, colon);
-	mutex_unlock(hdl->lock);
-}
-EXPORT_SYMBOL(v4l2_ctrl_handler_log_status);
-
-/* Call s_ctrl for all controls owned by the handler */
-int v4l2_ctrl_handler_setup(struct v4l2_ctrl_handler *hdl)
-{
-	struct v4l2_ctrl *ctrl;
-	int ret = 0;
-
-	if (hdl == NULL)
-		return 0;
-	mutex_lock(hdl->lock);
-	list_for_each_entry(ctrl, &hdl->ctrls, node)
-		ctrl->done = false;
-
-	list_for_each_entry(ctrl, &hdl->ctrls, node) {
-		struct v4l2_ctrl *master = ctrl->cluster[0];
-		int i;
-
-		/* Skip if this control was already handled by a cluster. */
-		/* Skip button controls and read-only controls. */
-		if (ctrl->done || ctrl->type == V4L2_CTRL_TYPE_BUTTON ||
-		    (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY))
-			continue;
-
-		for (i = 0; i < master->ncontrols; i++) {
-			if (master->cluster[i]) {
-				cur_to_new(master->cluster[i]);
-				master->cluster[i]->is_new = 1;
-				master->cluster[i]->done = true;
-			}
-		}
-		ret = call_op(master, s_ctrl);
-		if (ret)
-			break;
-	}
-	mutex_unlock(hdl->lock);
-	return ret;
-}
-EXPORT_SYMBOL(v4l2_ctrl_handler_setup);
-
-/* Implement VIDIOC_QUERYCTRL */
-int v4l2_queryctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_queryctrl *qc)
-{
-	u32 id = qc->id & V4L2_CTRL_ID_MASK;
-	struct v4l2_ctrl_ref *ref;
-	struct v4l2_ctrl *ctrl;
-
-	if (hdl == NULL)
-		return -EINVAL;
-
-	mutex_lock(hdl->lock);
-
-	/* Try to find it */
-	ref = find_ref(hdl, id);
-
-	if ((qc->id & V4L2_CTRL_FLAG_NEXT_CTRL) && !list_empty(&hdl->ctrl_refs)) {
-		/* Find the next control with ID > qc->id */
-
-		/* Did we reach the end of the control list? */
-		if (id >= node2id(hdl->ctrl_refs.prev)) {
-			ref = NULL; /* Yes, so there is no next control */
-		} else if (ref) {
-			/* We found a control with the given ID, so just get
-			   the next one in the list. */
-			ref = list_entry(ref->node.next, typeof(*ref), node);
-		} else {
-			/* No control with the given ID exists, so start
-			   searching for the next largest ID. We know there
-			   is one, otherwise the first 'if' above would have
-			   been true. */
-			list_for_each_entry(ref, &hdl->ctrl_refs, node)
-				if (id < ref->ctrl->id)
-					break;
-		}
-	}
-	mutex_unlock(hdl->lock);
-	if (!ref)
-		return -EINVAL;
-
-	ctrl = ref->ctrl;
-	memset(qc, 0, sizeof(*qc));
-	if (id >= V4L2_CID_PRIVATE_BASE)
-		qc->id = id;
-	else
-		qc->id = ctrl->id;
-	strlcpy(qc->name, ctrl->name, sizeof(qc->name));
-	qc->minimum = ctrl->minimum;
-	qc->maximum = ctrl->maximum;
-	qc->default_value = ctrl->default_value;
-	if (ctrl->type == V4L2_CTRL_TYPE_MENU
-	    || ctrl->type == V4L2_CTRL_TYPE_INTEGER_MENU)
-		qc->step = 1;
-	else
-		qc->step = ctrl->step;
-	qc->flags = ctrl->flags;
-	qc->type = ctrl->type;
-	return 0;
-}
-EXPORT_SYMBOL(v4l2_queryctrl);
-
-int v4l2_subdev_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
-{
-	if (qc->id & V4L2_CTRL_FLAG_NEXT_CTRL)
-		return -EINVAL;
-	return v4l2_queryctrl(sd->ctrl_handler, qc);
-}
-EXPORT_SYMBOL(v4l2_subdev_queryctrl);
-
-/* Implement VIDIOC_QUERYMENU */
-int v4l2_querymenu(struct v4l2_ctrl_handler *hdl, struct v4l2_querymenu *qm)
-{
-	struct v4l2_ctrl *ctrl;
-	u32 i = qm->index;
-
-	ctrl = v4l2_ctrl_find(hdl, qm->id);
-	if (!ctrl)
-		return -EINVAL;
-
-	qm->reserved = 0;
-	/* Sanity checks */
-	switch (ctrl->type) {
-	case V4L2_CTRL_TYPE_MENU:
-		if (ctrl->qmenu == NULL)
-			return -EINVAL;
-		break;
-	case V4L2_CTRL_TYPE_INTEGER_MENU:
-		if (ctrl->qmenu_int == NULL)
-			return -EINVAL;
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	if (i < ctrl->minimum || i > ctrl->maximum)
-		return -EINVAL;
-
-	/* Use mask to see if this menu item should be skipped */
-	if (ctrl->menu_skip_mask & (1 << i))
-		return -EINVAL;
-	/* Empty menu items should also be skipped */
-	if (ctrl->type == V4L2_CTRL_TYPE_MENU) {
-		if (ctrl->qmenu[i] == NULL || ctrl->qmenu[i][0] == '\0')
-			return -EINVAL;
-		strlcpy(qm->name, ctrl->qmenu[i], sizeof(qm->name));
-	} else {
-		qm->value = ctrl->qmenu_int[i];
-	}
-	return 0;
-}
-EXPORT_SYMBOL(v4l2_querymenu);
-
-int v4l2_subdev_querymenu(struct v4l2_subdev *sd, struct v4l2_querymenu *qm)
-{
-	return v4l2_querymenu(sd->ctrl_handler, qm);
-}
-EXPORT_SYMBOL(v4l2_subdev_querymenu);
-
-
-
-/* Some general notes on the atomic requirements of VIDIOC_G/TRY/S_EXT_CTRLS:
-
-   It is not a fully atomic operation, just best-effort only. After all, if
-   multiple controls have to be set through multiple i2c writes (for example)
-   then some initial writes may succeed while others fail. Thus leaving the
-   system in an inconsistent state. The question is how much effort you are
-   willing to spend on trying to make something atomic that really isn't.
-
-   From the point of view of an application the main requirement is that
-   when you call VIDIOC_S_EXT_CTRLS and some values are invalid then an
-   error should be returned without actually affecting any controls.
-
-   If all the values are correct, then it is acceptable to just give up
-   in case of low-level errors.
-
-   It is important though that the application can tell when only a partial
-   configuration was done. The way we do that is through the error_idx field
-   of struct v4l2_ext_controls: if that is equal to the count field then no
-   controls were affected. Otherwise all controls before that index were
-   successful in performing their 'get' or 'set' operation, the control at
-   the given index failed, and you don't know what happened with the controls
-   after the failed one. Since if they were part of a control cluster they
-   could have been successfully processed (if a cluster member was encountered
-   at index < error_idx), they could have failed (if a cluster member was at
-   error_idx), or they may not have been processed yet (if the first cluster
-   member appeared after error_idx).
-
-   It is all fairly theoretical, though. In practice all you can do is to
-   bail out. If error_idx == count, then it is an application bug. If
-   error_idx < count then it is only an application bug if the error code was
-   EBUSY. That usually means that something started streaming just when you
-   tried to set the controls. In all other cases it is a driver/hardware
-   problem and all you can do is to retry or bail out.
-
-   Note that these rules do not apply to VIDIOC_TRY_EXT_CTRLS: since that
-   never modifies controls the error_idx is just set to whatever control
-   has an invalid value.
- */
-
-/* Prepare for the extended g/s/try functions.
-   Find the controls in the control array and do some basic checks. */
-static int prepare_ext_ctrls(struct v4l2_ctrl_handler *hdl,
-			     struct v4l2_ext_controls *cs,
-			     struct v4l2_ctrl_helper *helpers)
-{
-	struct v4l2_ctrl_helper *h;
-	bool have_clusters = false;
-	u32 i;
-
-	for (i = 0, h = helpers; i < cs->count; i++, h++) {
-		struct v4l2_ext_control *c = &cs->controls[i];
-		struct v4l2_ctrl_ref *ref;
-		struct v4l2_ctrl *ctrl;
-		u32 id = c->id & V4L2_CTRL_ID_MASK;
-
-		cs->error_idx = i;
-
-		if (cs->ctrl_class && V4L2_CTRL_ID2CLASS(id) != cs->ctrl_class)
-			return -EINVAL;
-
-		/* Old-style private controls are not allowed for
-		   extended controls */
-		if (id >= V4L2_CID_PRIVATE_BASE)
-			return -EINVAL;
-		ref = find_ref_lock(hdl, id);
-		if (ref == NULL)
-			return -EINVAL;
-		ctrl = ref->ctrl;
-		if (ctrl->flags & V4L2_CTRL_FLAG_DISABLED)
-			return -EINVAL;
-
-		if (ctrl->cluster[0]->ncontrols > 1)
-			have_clusters = true;
-		if (ctrl->cluster[0] != ctrl)
-			ref = find_ref_lock(hdl, ctrl->cluster[0]->id);
-		/* Store the ref to the master control of the cluster */
-		h->mref = ref;
-		h->ctrl = ctrl;
-		/* Initially set next to 0, meaning that there is no other
-		   control in this helper array belonging to the same
-		   cluster */
-		h->next = 0;
-	}
-
-	/* We are done if there were no controls that belong to a multi-
-	   control cluster. */
-	if (!have_clusters)
-		return 0;
-
-	/* The code below figures out in O(n) time which controls in the list
-	   belong to the same cluster. */
-
-	/* This has to be done with the handler lock taken. */
-	mutex_lock(hdl->lock);
-
-	/* First zero the helper field in the master control references */
-	for (i = 0; i < cs->count; i++)
-		helpers[i].mref->helper = NULL;
-	for (i = 0, h = helpers; i < cs->count; i++, h++) {
-		struct v4l2_ctrl_ref *mref = h->mref;
-
-		/* If the mref->helper is set, then it points to an earlier
-		   helper that belongs to the same cluster. */
-		if (mref->helper) {
-			/* Set the next field of mref->helper to the current
-			   index: this means that that earlier helper now
-			   points to the next helper in the same cluster. */
-			mref->helper->next = i;
-			/* mref should be set only for the first helper in the
-			   cluster, clear the others. */
-			h->mref = NULL;
-		}
-		/* Point the mref helper to the current helper struct. */
-		mref->helper = h;
-	}
-	mutex_unlock(hdl->lock);
-	return 0;
-}
-
-/* Handles the corner case where cs->count == 0. It checks whether the
-   specified control class exists. If that class ID is 0, then it checks
-   whether there are any controls at all. */
-static int class_check(struct v4l2_ctrl_handler *hdl, u32 ctrl_class)
-{
-	if (ctrl_class == 0)
-		return list_empty(&hdl->ctrl_refs) ? -EINVAL : 0;
-	return find_ref_lock(hdl, ctrl_class | 1) ? 0 : -EINVAL;
-}
-
-
-
-/* Get extended controls. Allocates the helpers array if needed. */
-int v4l2_g_ext_ctrls(struct v4l2_ctrl_handler *hdl, struct v4l2_ext_controls *cs)
-{
-	struct v4l2_ctrl_helper helper[4];
-	struct v4l2_ctrl_helper *helpers = helper;
-	int ret;
-	int i, j;
-
-	cs->error_idx = cs->count;
-	cs->ctrl_class = V4L2_CTRL_ID2CLASS(cs->ctrl_class);
-
-	if (hdl == NULL)
-		return -EINVAL;
-
-	if (cs->count == 0)
-		return class_check(hdl, cs->ctrl_class);
-
-	if (cs->count > ARRAY_SIZE(helper)) {
-		helpers = kmalloc_array(cs->count, sizeof(helper[0]),
-					GFP_KERNEL);
-		if (helpers == NULL)
-			return -ENOMEM;
-	}
-
-	ret = prepare_ext_ctrls(hdl, cs, helpers);
-	cs->error_idx = cs->count;
-
-	for (i = 0; !ret && i < cs->count; i++)
-		if (helpers[i].ctrl->flags & V4L2_CTRL_FLAG_WRITE_ONLY)
-			ret = -EACCES;
-
-	for (i = 0; !ret && i < cs->count; i++) {
-		int (*ctrl_to_user)(struct v4l2_ext_control *c,
-				    struct v4l2_ctrl *ctrl) = cur_to_user;
-		struct v4l2_ctrl *master;
-
-		if (helpers[i].mref == NULL)
-			continue;
-
-		master = helpers[i].mref->ctrl;
-		cs->error_idx = i;
-
-		v4l2_ctrl_lock(master);
-
-		/* g_volatile_ctrl will update the new control values */
-		if ((master->flags & V4L2_CTRL_FLAG_VOLATILE) ||
-			(master->has_volatiles && !is_cur_manual(master))) {
-			for (j = 0; j < master->ncontrols; j++)
-				cur_to_new(master->cluster[j]);
-			ret = call_op(master, g_volatile_ctrl);
-			ctrl_to_user = new_to_user;
-		}
-		/* If OK, then copy the current (for non-volatile controls)
-		   or the new (for volatile controls) control values to the
-		   caller */
-		if (!ret) {
-			u32 idx = i;
-
-			do {
-				ret = ctrl_to_user(cs->controls + idx,
-						   helpers[idx].ctrl);
-				idx = helpers[idx].next;
-			} while (!ret && idx);
-		}
-		v4l2_ctrl_unlock(master);
-	}
-
-	if (cs->count > ARRAY_SIZE(helper))
-		kfree(helpers);
-	return ret;
-}
-EXPORT_SYMBOL(v4l2_g_ext_ctrls);
-
-int v4l2_subdev_g_ext_ctrls(struct v4l2_subdev *sd, struct v4l2_ext_controls *cs)
-{
-	return v4l2_g_ext_ctrls(sd->ctrl_handler, cs);
-}
-EXPORT_SYMBOL(v4l2_subdev_g_ext_ctrls);
-
-/* Helper function to get a single control */
-static int get_ctrl(struct v4l2_ctrl *ctrl, s32 *val)
-{
-	struct v4l2_ctrl *master = ctrl->cluster[0];
-	int ret = 0;
-	int i;
-
-	if (ctrl->flags & V4L2_CTRL_FLAG_WRITE_ONLY)
-		return -EACCES;
-
-	v4l2_ctrl_lock(master);
-	/* g_volatile_ctrl will update the current control values */
-	if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) {
-		for (i = 0; i < master->ncontrols; i++)
-			cur_to_new(master->cluster[i]);
-		ret = call_op(master, g_volatile_ctrl);
-		*val = ctrl->val;
-	} else {
-		*val = ctrl->cur.val;
-	}
-	v4l2_ctrl_unlock(master);
-	return ret;
-}
-
-int v4l2_g_ctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_control *control)
-{
-	struct v4l2_ctrl *ctrl = v4l2_ctrl_find(hdl, control->id);
-
-	if (ctrl == NULL || !type_is_int(ctrl))
-		return -EINVAL;
-	return get_ctrl(ctrl, &control->value);
-}
-EXPORT_SYMBOL(v4l2_g_ctrl);
-
-int v4l2_subdev_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *control)
-{
-	return v4l2_g_ctrl(sd->ctrl_handler, control);
-}
-EXPORT_SYMBOL(v4l2_subdev_g_ctrl);
-
-s32 v4l2_ctrl_g_ctrl(struct v4l2_ctrl *ctrl)
-{
-	s32 val = 0;
-
-	/* It's a driver bug if this happens. */
-	WARN_ON(!type_is_int(ctrl));
-	get_ctrl(ctrl, &val);
-	return val;
-}
-EXPORT_SYMBOL(v4l2_ctrl_g_ctrl);
-
-
-/* Core function that calls try/s_ctrl and ensures that the new value is
-   copied to the current value on a set.
-   Must be called with ctrl->handler->lock held. */
-static int try_or_set_cluster(struct v4l2_fh *fh,
-			      struct v4l2_ctrl *master, bool set)
-{
-	bool update_flag;
-	int ret;
-	int i;
-
-	/* Go through the cluster and either validate the new value or
-	   (if no new value was set), copy the current value to the new
-	   value, ensuring a consistent view for the control ops when
-	   called. */
-	for (i = 0; i < master->ncontrols; i++) {
-		struct v4l2_ctrl *ctrl = master->cluster[i];
-
-		if (ctrl == NULL)
-			continue;
-
-		if (!ctrl->is_new) {
-			cur_to_new(ctrl);
-			continue;
-		}
-		/* Check again: it may have changed since the
-		   previous check in try_or_set_ext_ctrls(). */
-		if (set && (ctrl->flags & V4L2_CTRL_FLAG_GRABBED))
-			return -EBUSY;
-	}
-
-	ret = call_op(master, try_ctrl);
-
-	/* Don't set if there is no change */
-	if (ret || !set || !cluster_changed(master))
-		return ret;
-	ret = call_op(master, s_ctrl);
-	if (ret)
-		return ret;
-
-	/* If OK, then make the new values permanent. */
-	update_flag = is_cur_manual(master) != is_new_manual(master);
-	for (i = 0; i < master->ncontrols; i++)
-		new_to_cur(fh, master->cluster[i], update_flag && i > 0);
-	return 0;
-}
-
-/* Validate controls. */
-static int validate_ctrls(struct v4l2_ext_controls *cs,
-			  struct v4l2_ctrl_helper *helpers, bool set)
-{
-	unsigned i;
-	int ret = 0;
-
-	cs->error_idx = cs->count;
-	for (i = 0; i < cs->count; i++) {
-		struct v4l2_ctrl *ctrl = helpers[i].ctrl;
-
-		cs->error_idx = i;
-
-		if (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY)
-			return -EACCES;
-		/* This test is also done in try_set_control_cluster() which
-		   is called in atomic context, so that has the final say,
-		   but it makes sense to do an up-front check as well. Once
-		   an error occurs in try_set_control_cluster() some other
-		   controls may have been set already and we want to do a
-		   best-effort to avoid that. */
-		if (set && (ctrl->flags & V4L2_CTRL_FLAG_GRABBED))
-			return -EBUSY;
-		ret = validate_new(ctrl, &cs->controls[i]);
-		if (ret)
-			return ret;
-	}
-	return 0;
-}
-
-/* Obtain the current volatile values of an autocluster and mark them
-   as new. */
-static void update_from_auto_cluster(struct v4l2_ctrl *master)
-{
-	int i;
-
-	for (i = 0; i < master->ncontrols; i++)
-		cur_to_new(master->cluster[i]);
-	if (!call_op(master, g_volatile_ctrl))
-		for (i = 1; i < master->ncontrols; i++)
-			if (master->cluster[i])
-				master->cluster[i]->is_new = 1;
-}
-
-/* Try or try-and-set controls */
-static int try_set_ext_ctrls(struct v4l2_fh *fh, struct v4l2_ctrl_handler *hdl,
-			     struct v4l2_ext_controls *cs,
-			     bool set)
-{
-	struct v4l2_ctrl_helper helper[4];
-	struct v4l2_ctrl_helper *helpers = helper;
-	unsigned i, j;
-	int ret;
-
-	cs->error_idx = cs->count;
-	cs->ctrl_class = V4L2_CTRL_ID2CLASS(cs->ctrl_class);
-
-	if (hdl == NULL)
-		return -EINVAL;
-
-	if (cs->count == 0)
-		return class_check(hdl, cs->ctrl_class);
-
-	if (cs->count > ARRAY_SIZE(helper)) {
-		helpers = kmalloc_array(cs->count, sizeof(helper[0]),
-					GFP_KERNEL);
-		if (!helpers)
-			return -ENOMEM;
-	}
-	ret = prepare_ext_ctrls(hdl, cs, helpers);
-	if (!ret)
-		ret = validate_ctrls(cs, helpers, set);
-	if (ret && set)
-		cs->error_idx = cs->count;
-	for (i = 0; !ret && i < cs->count; i++) {
-		struct v4l2_ctrl *master;
-		u32 idx = i;
-
-		if (helpers[i].mref == NULL)
-			continue;
-
-		cs->error_idx = i;
-		master = helpers[i].mref->ctrl;
-		v4l2_ctrl_lock(master);
-
-		/* Reset the 'is_new' flags of the cluster */
-		for (j = 0; j < master->ncontrols; j++)
-			if (master->cluster[j])
-				master->cluster[j]->is_new = 0;
-
-		/* For volatile autoclusters that are currently in auto mode
-		   we need to discover if it will be set to manual mode.
-		   If so, then we have to copy the current volatile values
-		   first since those will become the new manual values (which
-		   may be overwritten by explicit new values from this set
-		   of controls). */
-		if (master->is_auto && master->has_volatiles &&
-						!is_cur_manual(master)) {
-			/* Pick an initial non-manual value */
-			s32 new_auto_val = master->manual_mode_value + 1;
-			u32 tmp_idx = idx;
-
-			do {
-				/* Check if the auto control is part of the
-				   list, and remember the new value. */
-				if (helpers[tmp_idx].ctrl == master)
-					new_auto_val = cs->controls[tmp_idx].value;
-				tmp_idx = helpers[tmp_idx].next;
-			} while (tmp_idx);
-			/* If the new value == the manual value, then copy
-			   the current volatile values. */
-			if (new_auto_val == master->manual_mode_value)
-				update_from_auto_cluster(master);
-		}
-
-		/* Copy the new caller-supplied control values.
-		   user_to_new() sets 'is_new' to 1. */
-		do {
-			ret = user_to_new(cs->controls + idx, helpers[idx].ctrl);
-			idx = helpers[idx].next;
-		} while (!ret && idx);
-
-		if (!ret)
-			ret = try_or_set_cluster(fh, master, set);
-
-		/* Copy the new values back to userspace. */
-		if (!ret) {
-			idx = i;
-			do {
-				ret = new_to_user(cs->controls + idx,
-						helpers[idx].ctrl);
-				idx = helpers[idx].next;
-			} while (!ret && idx);
-		}
-		v4l2_ctrl_unlock(master);
-	}
-
-	if (cs->count > ARRAY_SIZE(helper))
-		kfree(helpers);
-	return ret;
-}
-
-int v4l2_try_ext_ctrls(struct v4l2_ctrl_handler *hdl, struct v4l2_ext_controls *cs)
-{
-	return try_set_ext_ctrls(NULL, hdl, cs, false);
-}
-EXPORT_SYMBOL(v4l2_try_ext_ctrls);
-
-int v4l2_s_ext_ctrls(struct v4l2_fh *fh, struct v4l2_ctrl_handler *hdl,
-					struct v4l2_ext_controls *cs)
-{
-	return try_set_ext_ctrls(fh, hdl, cs, true);
-}
-EXPORT_SYMBOL(v4l2_s_ext_ctrls);
-
-int v4l2_subdev_try_ext_ctrls(struct v4l2_subdev *sd, struct v4l2_ext_controls *cs)
-{
-	return try_set_ext_ctrls(NULL, sd->ctrl_handler, cs, false);
-}
-EXPORT_SYMBOL(v4l2_subdev_try_ext_ctrls);
-
-int v4l2_subdev_s_ext_ctrls(struct v4l2_subdev *sd, struct v4l2_ext_controls *cs)
-{
-	return try_set_ext_ctrls(NULL, sd->ctrl_handler, cs, true);
-}
-EXPORT_SYMBOL(v4l2_subdev_s_ext_ctrls);
-
-/* Helper function for VIDIOC_S_CTRL compatibility */
-static int set_ctrl(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, s32 *val)
-{
-	struct v4l2_ctrl *master = ctrl->cluster[0];
-	int ret;
-	int i;
-
-	ret = validate_new_int(ctrl, val);
-	if (ret)
-		return ret;
-
-	v4l2_ctrl_lock(ctrl);
-
-	/* Reset the 'is_new' flags of the cluster */
-	for (i = 0; i < master->ncontrols; i++)
-		if (master->cluster[i])
-			master->cluster[i]->is_new = 0;
-
-	/* For autoclusters with volatiles that are switched from auto to
-	   manual mode we have to update the current volatile values since
-	   those will become the initial manual values after such a switch. */
-	if (master->is_auto && master->has_volatiles && ctrl == master &&
-	    !is_cur_manual(master) && *val == master->manual_mode_value)
-		update_from_auto_cluster(master);
-	ctrl->val = *val;
-	ctrl->is_new = 1;
-	ret = try_or_set_cluster(fh, master, true);
-	*val = ctrl->cur.val;
-	v4l2_ctrl_unlock(ctrl);
-	return ret;
-}
-
-int v4l2_s_ctrl(struct v4l2_fh *fh, struct v4l2_ctrl_handler *hdl,
-					struct v4l2_control *control)
-{
-	struct v4l2_ctrl *ctrl = v4l2_ctrl_find(hdl, control->id);
-
-	if (ctrl == NULL || !type_is_int(ctrl))
-		return -EINVAL;
-
-	if (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY)
-		return -EACCES;
-
-	return set_ctrl(fh, ctrl, &control->value);
-}
-EXPORT_SYMBOL(v4l2_s_ctrl);
-
-int v4l2_subdev_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *control)
-{
-	return v4l2_s_ctrl(NULL, sd->ctrl_handler, control);
-}
-EXPORT_SYMBOL(v4l2_subdev_s_ctrl);
-
-int v4l2_ctrl_s_ctrl(struct v4l2_ctrl *ctrl, s32 val)
-{
-	/* It's a driver bug if this happens. */
-	WARN_ON(!type_is_int(ctrl));
-	return set_ctrl(NULL, ctrl, &val);
-}
-EXPORT_SYMBOL(v4l2_ctrl_s_ctrl);
-
-static int v4l2_ctrl_add_event(struct v4l2_subscribed_event *sev, unsigned elems)
-{
-	struct v4l2_ctrl *ctrl = v4l2_ctrl_find(sev->fh->ctrl_handler, sev->id);
-
-	if (ctrl == NULL)
-		return -EINVAL;
-
-	v4l2_ctrl_lock(ctrl);
-	list_add_tail(&sev->node, &ctrl->ev_subs);
-	if (ctrl->type != V4L2_CTRL_TYPE_CTRL_CLASS &&
-	    (sev->flags & V4L2_EVENT_SUB_FL_SEND_INITIAL)) {
-		struct v4l2_event ev;
-		u32 changes = V4L2_EVENT_CTRL_CH_FLAGS;
-
-		if (!(ctrl->flags & V4L2_CTRL_FLAG_WRITE_ONLY))
-			changes |= V4L2_EVENT_CTRL_CH_VALUE;
-		fill_event(&ev, ctrl, changes);
-		/* Mark the queue as active, allowing this initial
-		   event to be accepted. */
-		sev->elems = elems;
-		v4l2_event_queue_fh(sev->fh, &ev);
-	}
-	v4l2_ctrl_unlock(ctrl);
-	return 0;
-}
-
-static void v4l2_ctrl_del_event(struct v4l2_subscribed_event *sev)
-{
-	struct v4l2_ctrl *ctrl = v4l2_ctrl_find(sev->fh->ctrl_handler, sev->id);
-
-	v4l2_ctrl_lock(ctrl);
-	list_del(&sev->node);
-	v4l2_ctrl_unlock(ctrl);
-}
-
-void v4l2_ctrl_replace(struct v4l2_event *old, const struct v4l2_event *new)
-{
-	u32 old_changes = old->u.ctrl.changes;
-
-	old->u.ctrl = new->u.ctrl;
-	old->u.ctrl.changes |= old_changes;
-}
-EXPORT_SYMBOL(v4l2_ctrl_replace);
-
-void v4l2_ctrl_merge(const struct v4l2_event *old, struct v4l2_event *new)
-{
-	new->u.ctrl.changes |= old->u.ctrl.changes;
-}
-EXPORT_SYMBOL(v4l2_ctrl_merge);
-
-const struct v4l2_subscribed_event_ops v4l2_ctrl_sub_ev_ops = {
-	.add = v4l2_ctrl_add_event,
-	.del = v4l2_ctrl_del_event,
-	.replace = v4l2_ctrl_replace,
-	.merge = v4l2_ctrl_merge,
-};
-EXPORT_SYMBOL(v4l2_ctrl_sub_ev_ops);
-
-int v4l2_ctrl_log_status(struct file *file, void *fh)
-{
-	struct video_device *vfd = video_devdata(file);
-	struct v4l2_fh *vfh = file->private_data;
-
-	if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) && vfd->v4l2_dev)
-		v4l2_ctrl_handler_log_status(vfh->ctrl_handler,
-			vfd->v4l2_dev->name);
-	return 0;
-}
-EXPORT_SYMBOL(v4l2_ctrl_log_status);
-
-int v4l2_ctrl_subscribe_event(struct v4l2_fh *fh,
-				struct v4l2_event_subscription *sub)
-{
-	if (sub->type == V4L2_EVENT_CTRL)
-		return v4l2_event_subscribe(fh, sub, 0, &v4l2_ctrl_sub_ev_ops);
-	return -EINVAL;
-}
-EXPORT_SYMBOL(v4l2_ctrl_subscribe_event);
-
-unsigned int v4l2_ctrl_poll(struct file *file, struct poll_table_struct *wait)
-{
-	struct v4l2_fh *fh = file->private_data;
-
-	if (v4l2_event_pending(fh))
-		return POLLPRI;
-	poll_wait(file, &fh->wait, wait);
-	return 0;
-}
-EXPORT_SYMBOL(v4l2_ctrl_poll);
diff --git a/drivers/media/video/v4l2-dev.c b/drivers/media/video/v4l2-dev.c
deleted file mode 100644
index 71237f5f85f4..000000000000
--- a/drivers/media/video/v4l2-dev.c
+++ /dev/null
@@ -1,1003 +0,0 @@
-/*
- * Video capture interface for Linux version 2
- *
- *	A generic video device interface for the LINUX operating system
- *	using a set of device structures/vectors for low level operations.
- *
- *	This program is free software; you can redistribute it and/or
- *	modify it under the terms of the GNU General Public License
- *	as published by the Free Software Foundation; either version
- *	2 of the License, or (at your option) any later version.
- *
- * Authors:	Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1)
- *              Mauro Carvalho Chehab <mchehab@infradead.org> (version 2)
- *
- * Fixes:	20000516  Claudio Matsuoka <claudio@conectiva.com>
- *		- Added procfs support
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/kmod.h>
-#include <linux/slab.h>
-#include <asm/uaccess.h>
-
-#include <media/v4l2-common.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-ioctl.h>
-
-#define VIDEO_NUM_DEVICES	256
-#define VIDEO_NAME              "video4linux"
-
-/*
- *	sysfs stuff
- */
-
-static ssize_t show_index(struct device *cd,
-			 struct device_attribute *attr, char *buf)
-{
-	struct video_device *vdev = to_video_device(cd);
-
-	return sprintf(buf, "%i\n", vdev->index);
-}
-
-static ssize_t show_debug(struct device *cd,
-			 struct device_attribute *attr, char *buf)
-{
-	struct video_device *vdev = to_video_device(cd);
-
-	return sprintf(buf, "%i\n", vdev->debug);
-}
-
-static ssize_t set_debug(struct device *cd, struct device_attribute *attr,
-		   const char *buf, size_t len)
-{
-	struct video_device *vdev = to_video_device(cd);
-	int res = 0;
-	u16 value;
-
-	res = kstrtou16(buf, 0, &value);
-	if (res)
-		return res;
-
-	vdev->debug = value;
-	return len;
-}
-
-static ssize_t show_name(struct device *cd,
-			 struct device_attribute *attr, char *buf)
-{
-	struct video_device *vdev = to_video_device(cd);
-
-	return sprintf(buf, "%.*s\n", (int)sizeof(vdev->name), vdev->name);
-}
-
-static struct device_attribute video_device_attrs[] = {
-	__ATTR(name, S_IRUGO, show_name, NULL),
-	__ATTR(debug, 0644, show_debug, set_debug),
-	__ATTR(index, S_IRUGO, show_index, NULL),
-	__ATTR_NULL
-};
-
-/*
- *	Active devices
- */
-static struct video_device *video_device[VIDEO_NUM_DEVICES];
-static DEFINE_MUTEX(videodev_lock);
-static DECLARE_BITMAP(devnode_nums[VFL_TYPE_MAX], VIDEO_NUM_DEVICES);
-
-/* Device node utility functions */
-
-/* Note: these utility functions all assume that vfl_type is in the range
-   [0, VFL_TYPE_MAX-1]. */
-
-#ifdef CONFIG_VIDEO_FIXED_MINOR_RANGES
-/* Return the bitmap corresponding to vfl_type. */
-static inline unsigned long *devnode_bits(int vfl_type)
-{
-	/* Any types not assigned to fixed minor ranges must be mapped to
-	   one single bitmap for the purposes of finding a free node number
-	   since all those unassigned types use the same minor range. */
-	int idx = (vfl_type > VFL_TYPE_RADIO) ? VFL_TYPE_MAX - 1 : vfl_type;
-
-	return devnode_nums[idx];
-}
-#else
-/* Return the bitmap corresponding to vfl_type. */
-static inline unsigned long *devnode_bits(int vfl_type)
-{
-	return devnode_nums[vfl_type];
-}
-#endif
-
-/* Mark device node number vdev->num as used */
-static inline void devnode_set(struct video_device *vdev)
-{
-	set_bit(vdev->num, devnode_bits(vdev->vfl_type));
-}
-
-/* Mark device node number vdev->num as unused */
-static inline void devnode_clear(struct video_device *vdev)
-{
-	clear_bit(vdev->num, devnode_bits(vdev->vfl_type));
-}
-
-/* Try to find a free device node number in the range [from, to> */
-static inline int devnode_find(struct video_device *vdev, int from, int to)
-{
-	return find_next_zero_bit(devnode_bits(vdev->vfl_type), to, from);
-}
-
-struct video_device *video_device_alloc(void)
-{
-	return kzalloc(sizeof(struct video_device), GFP_KERNEL);
-}
-EXPORT_SYMBOL(video_device_alloc);
-
-void video_device_release(struct video_device *vdev)
-{
-	kfree(vdev);
-}
-EXPORT_SYMBOL(video_device_release);
-
-void video_device_release_empty(struct video_device *vdev)
-{
-	/* Do nothing */
-	/* Only valid when the video_device struct is a static. */
-}
-EXPORT_SYMBOL(video_device_release_empty);
-
-static inline void video_get(struct video_device *vdev)
-{
-	get_device(&vdev->dev);
-}
-
-static inline void video_put(struct video_device *vdev)
-{
-	put_device(&vdev->dev);
-}
-
-/* Called when the last user of the video device exits. */
-static void v4l2_device_release(struct device *cd)
-{
-	struct video_device *vdev = to_video_device(cd);
-	struct v4l2_device *v4l2_dev = vdev->v4l2_dev;
-
-	mutex_lock(&videodev_lock);
-	if (WARN_ON(video_device[vdev->minor] != vdev)) {
-		/* should not happen */
-		mutex_unlock(&videodev_lock);
-		return;
-	}
-
-	/* Free up this device for reuse */
-	video_device[vdev->minor] = NULL;
-
-	/* Delete the cdev on this minor as well */
-	cdev_del(vdev->cdev);
-	/* Just in case some driver tries to access this from
-	   the release() callback. */
-	vdev->cdev = NULL;
-
-	/* Mark device node number as free */
-	devnode_clear(vdev);
-
-	mutex_unlock(&videodev_lock);
-
-#if defined(CONFIG_MEDIA_CONTROLLER)
-	if (v4l2_dev && v4l2_dev->mdev &&
-	    vdev->vfl_type != VFL_TYPE_SUBDEV)
-		media_device_unregister_entity(&vdev->entity);
-#endif
-
-	/* Do not call v4l2_device_put if there is no release callback set.
-	 * Drivers that have no v4l2_device release callback might free the
-	 * v4l2_dev instance in the video_device release callback below, so we
-	 * must perform this check here.
-	 *
-	 * TODO: In the long run all drivers that use v4l2_device should use the
-	 * v4l2_device release callback. This check will then be unnecessary.
-	 */
-	if (v4l2_dev && v4l2_dev->release == NULL)
-		v4l2_dev = NULL;
-
-	/* Release video_device and perform other
-	   cleanups as needed. */
-	vdev->release(vdev);
-
-	/* Decrease v4l2_device refcount */
-	if (v4l2_dev)
-		v4l2_device_put(v4l2_dev);
-}
-
-static struct class video_class = {
-	.name = VIDEO_NAME,
-	.dev_attrs = video_device_attrs,
-};
-
-struct video_device *video_devdata(struct file *file)
-{
-	return video_device[iminor(file->f_path.dentry->d_inode)];
-}
-EXPORT_SYMBOL(video_devdata);
-
-
-/* Priority handling */
-
-static inline bool prio_is_valid(enum v4l2_priority prio)
-{
-	return prio == V4L2_PRIORITY_BACKGROUND ||
-	       prio == V4L2_PRIORITY_INTERACTIVE ||
-	       prio == V4L2_PRIORITY_RECORD;
-}
-
-void v4l2_prio_init(struct v4l2_prio_state *global)
-{
-	memset(global, 0, sizeof(*global));
-}
-EXPORT_SYMBOL(v4l2_prio_init);
-
-int v4l2_prio_change(struct v4l2_prio_state *global, enum v4l2_priority *local,
-		     enum v4l2_priority new)
-{
-	if (!prio_is_valid(new))
-		return -EINVAL;
-	if (*local == new)
-		return 0;
-
-	atomic_inc(&global->prios[new]);
-	if (prio_is_valid(*local))
-		atomic_dec(&global->prios[*local]);
-	*local = new;
-	return 0;
-}
-EXPORT_SYMBOL(v4l2_prio_change);
-
-void v4l2_prio_open(struct v4l2_prio_state *global, enum v4l2_priority *local)
-{
-	v4l2_prio_change(global, local, V4L2_PRIORITY_DEFAULT);
-}
-EXPORT_SYMBOL(v4l2_prio_open);
-
-void v4l2_prio_close(struct v4l2_prio_state *global, enum v4l2_priority local)
-{
-	if (prio_is_valid(local))
-		atomic_dec(&global->prios[local]);
-}
-EXPORT_SYMBOL(v4l2_prio_close);
-
-enum v4l2_priority v4l2_prio_max(struct v4l2_prio_state *global)
-{
-	if (atomic_read(&global->prios[V4L2_PRIORITY_RECORD]) > 0)
-		return V4L2_PRIORITY_RECORD;
-	if (atomic_read(&global->prios[V4L2_PRIORITY_INTERACTIVE]) > 0)
-		return V4L2_PRIORITY_INTERACTIVE;
-	if (atomic_read(&global->prios[V4L2_PRIORITY_BACKGROUND]) > 0)
-		return V4L2_PRIORITY_BACKGROUND;
-	return V4L2_PRIORITY_UNSET;
-}
-EXPORT_SYMBOL(v4l2_prio_max);
-
-int v4l2_prio_check(struct v4l2_prio_state *global, enum v4l2_priority local)
-{
-	return (local < v4l2_prio_max(global)) ? -EBUSY : 0;
-}
-EXPORT_SYMBOL(v4l2_prio_check);
-
-
-static ssize_t v4l2_read(struct file *filp, char __user *buf,
-		size_t sz, loff_t *off)
-{
-	struct video_device *vdev = video_devdata(filp);
-	int ret = -ENODEV;
-
-	if (!vdev->fops->read)
-		return -EINVAL;
-	if (video_is_registered(vdev))
-		ret = vdev->fops->read(filp, buf, sz, off);
-	if (vdev->debug)
-		printk(KERN_DEBUG "%s: read: %zd (%d)\n",
-			video_device_node_name(vdev), sz, ret);
-	return ret;
-}
-
-static ssize_t v4l2_write(struct file *filp, const char __user *buf,
-		size_t sz, loff_t *off)
-{
-	struct video_device *vdev = video_devdata(filp);
-	int ret = -ENODEV;
-
-	if (!vdev->fops->write)
-		return -EINVAL;
-	if (video_is_registered(vdev))
-		ret = vdev->fops->write(filp, buf, sz, off);
-	if (vdev->debug)
-		printk(KERN_DEBUG "%s: write: %zd (%d)\n",
-			video_device_node_name(vdev), sz, ret);
-	return ret;
-}
-
-static unsigned int v4l2_poll(struct file *filp, struct poll_table_struct *poll)
-{
-	struct video_device *vdev = video_devdata(filp);
-	unsigned int res = POLLERR | POLLHUP;
-
-	if (!vdev->fops->poll)
-		return DEFAULT_POLLMASK;
-	if (video_is_registered(vdev))
-		res = vdev->fops->poll(filp, poll);
-	if (vdev->debug)
-		printk(KERN_DEBUG "%s: poll: %08x\n",
-			video_device_node_name(vdev), res);
-	return res;
-}
-
-static long v4l2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
-{
-	struct video_device *vdev = video_devdata(filp);
-	int ret = -ENODEV;
-
-	if (vdev->fops->unlocked_ioctl) {
-		struct mutex *lock = v4l2_ioctl_get_lock(vdev, cmd);
-
-		if (lock && mutex_lock_interruptible(lock))
-			return -ERESTARTSYS;
-		if (video_is_registered(vdev))
-			ret = vdev->fops->unlocked_ioctl(filp, cmd, arg);
-		if (lock)
-			mutex_unlock(lock);
-	} else if (vdev->fops->ioctl) {
-		/* This code path is a replacement for the BKL. It is a major
-		 * hack but it will have to do for those drivers that are not
-		 * yet converted to use unlocked_ioctl.
-		 *
-		 * There are two options: if the driver implements struct
-		 * v4l2_device, then the lock defined there is used to
-		 * serialize the ioctls. Otherwise the v4l2 core lock defined
-		 * below is used. This lock is really bad since it serializes
-		 * completely independent devices.
-		 *
-		 * Both variants suffer from the same problem: if the driver
-		 * sleeps, then it blocks all ioctls since the lock is still
-		 * held. This is very common for VIDIOC_DQBUF since that
-		 * normally waits for a frame to arrive. As a result any other
-		 * ioctl calls will proceed very, very slowly since each call
-		 * will have to wait for the VIDIOC_QBUF to finish. Things that
-		 * should take 0.01s may now take 10-20 seconds.
-		 *
-		 * The workaround is to *not* take the lock for VIDIOC_DQBUF.
-		 * This actually works OK for videobuf-based drivers, since
-		 * videobuf will take its own internal lock.
-		 */
-		static DEFINE_MUTEX(v4l2_ioctl_mutex);
-		struct mutex *m = vdev->v4l2_dev ?
-			&vdev->v4l2_dev->ioctl_lock : &v4l2_ioctl_mutex;
-
-		if (cmd != VIDIOC_DQBUF && mutex_lock_interruptible(m))
-			return -ERESTARTSYS;
-		if (video_is_registered(vdev))
-			ret = vdev->fops->ioctl(filp, cmd, arg);
-		if (cmd != VIDIOC_DQBUF)
-			mutex_unlock(m);
-	} else
-		ret = -ENOTTY;
-
-	return ret;
-}
-
-#ifdef CONFIG_MMU
-#define v4l2_get_unmapped_area NULL
-#else
-static unsigned long v4l2_get_unmapped_area(struct file *filp,
-		unsigned long addr, unsigned long len, unsigned long pgoff,
-		unsigned long flags)
-{
-	struct video_device *vdev = video_devdata(filp);
-	int ret;
-
-	if (!vdev->fops->get_unmapped_area)
-		return -ENOSYS;
-	if (!video_is_registered(vdev))
-		return -ENODEV;
-	ret = vdev->fops->get_unmapped_area(filp, addr, len, pgoff, flags);
-	if (vdev->debug)
-		printk(KERN_DEBUG "%s: get_unmapped_area (%d)\n",
-			video_device_node_name(vdev), ret);
-	return ret;
-}
-#endif
-
-static int v4l2_mmap(struct file *filp, struct vm_area_struct *vm)
-{
-	struct video_device *vdev = video_devdata(filp);
-	int ret = -ENODEV;
-
-	if (!vdev->fops->mmap)
-		return -ENODEV;
-	if (video_is_registered(vdev))
-		ret = vdev->fops->mmap(filp, vm);
-	if (vdev->debug)
-		printk(KERN_DEBUG "%s: mmap (%d)\n",
-			video_device_node_name(vdev), ret);
-	return ret;
-}
-
-/* Override for the open function */
-static int v4l2_open(struct inode *inode, struct file *filp)
-{
-	struct video_device *vdev;
-	int ret = 0;
-
-	/* Check if the video device is available */
-	mutex_lock(&videodev_lock);
-	vdev = video_devdata(filp);
-	/* return ENODEV if the video device has already been removed. */
-	if (vdev == NULL || !video_is_registered(vdev)) {
-		mutex_unlock(&videodev_lock);
-		return -ENODEV;
-	}
-	/* and increase the device refcount */
-	video_get(vdev);
-	mutex_unlock(&videodev_lock);
-	if (vdev->fops->open) {
-		if (video_is_registered(vdev))
-			ret = vdev->fops->open(filp);
-		else
-			ret = -ENODEV;
-	}
-
-	if (vdev->debug)
-		printk(KERN_DEBUG "%s: open (%d)\n",
-			video_device_node_name(vdev), ret);
-	/* decrease the refcount in case of an error */
-	if (ret)
-		video_put(vdev);
-	return ret;
-}
-
-/* Override for the release function */
-static int v4l2_release(struct inode *inode, struct file *filp)
-{
-	struct video_device *vdev = video_devdata(filp);
-	int ret = 0;
-
-	if (vdev->fops->release)
-		ret = vdev->fops->release(filp);
-	if (vdev->debug)
-		printk(KERN_DEBUG "%s: release\n",
-			video_device_node_name(vdev));
-
-	/* decrease the refcount unconditionally since the release()
-	   return value is ignored. */
-	video_put(vdev);
-	return ret;
-}
-
-static const struct file_operations v4l2_fops = {
-	.owner = THIS_MODULE,
-	.read = v4l2_read,
-	.write = v4l2_write,
-	.open = v4l2_open,
-	.get_unmapped_area = v4l2_get_unmapped_area,
-	.mmap = v4l2_mmap,
-	.unlocked_ioctl = v4l2_ioctl,
-#ifdef CONFIG_COMPAT
-	.compat_ioctl = v4l2_compat_ioctl32,
-#endif
-	.release = v4l2_release,
-	.poll = v4l2_poll,
-	.llseek = no_llseek,
-};
-
-/**
- * get_index - assign stream index number based on parent device
- * @vdev: video_device to assign index number to, vdev->parent should be assigned
- *
- * Note that when this is called the new device has not yet been registered
- * in the video_device array, but it was able to obtain a minor number.
- *
- * This means that we can always obtain a free stream index number since
- * the worst case scenario is that there are VIDEO_NUM_DEVICES - 1 slots in
- * use of the video_device array.
- *
- * Returns a free index number.
- */
-static int get_index(struct video_device *vdev)
-{
-	/* This can be static since this function is called with the global
-	   videodev_lock held. */
-	static DECLARE_BITMAP(used, VIDEO_NUM_DEVICES);
-	int i;
-
-	/* Some drivers do not set the parent. In that case always return 0. */
-	if (vdev->parent == NULL)
-		return 0;
-
-	bitmap_zero(used, VIDEO_NUM_DEVICES);
-
-	for (i = 0; i < VIDEO_NUM_DEVICES; i++) {
-		if (video_device[i] != NULL &&
-		    video_device[i]->parent == vdev->parent) {
-			set_bit(video_device[i]->index, used);
-		}
-	}
-
-	return find_first_zero_bit(used, VIDEO_NUM_DEVICES);
-}
-
-#define SET_VALID_IOCTL(ops, cmd, op)			\
-	if (ops->op)					\
-		set_bit(_IOC_NR(cmd), valid_ioctls)
-
-/* This determines which ioctls are actually implemented in the driver.
-   It's a one-time thing which simplifies video_ioctl2 as it can just do
-   a bit test.
-
-   Note that drivers can override this by setting bits to 1 in
-   vdev->valid_ioctls. If an ioctl is marked as 1 when this function is
-   called, then that ioctl will actually be marked as unimplemented.
-
-   It does that by first setting up the local valid_ioctls bitmap, and
-   at the end do a:
-
-   vdev->valid_ioctls = valid_ioctls & ~(vdev->valid_ioctls)
- */
-static void determine_valid_ioctls(struct video_device *vdev)
-{
-	DECLARE_BITMAP(valid_ioctls, BASE_VIDIOC_PRIVATE);
-	const struct v4l2_ioctl_ops *ops = vdev->ioctl_ops;
-
-	bitmap_zero(valid_ioctls, BASE_VIDIOC_PRIVATE);
-
-	SET_VALID_IOCTL(ops, VIDIOC_QUERYCAP, vidioc_querycap);
-	if (ops->vidioc_g_priority ||
-			test_bit(V4L2_FL_USE_FH_PRIO, &vdev->flags))
-		set_bit(_IOC_NR(VIDIOC_G_PRIORITY), valid_ioctls);
-	if (ops->vidioc_s_priority ||
-			test_bit(V4L2_FL_USE_FH_PRIO, &vdev->flags))
-		set_bit(_IOC_NR(VIDIOC_S_PRIORITY), valid_ioctls);
-	if (ops->vidioc_enum_fmt_vid_cap ||
-	    ops->vidioc_enum_fmt_vid_out ||
-	    ops->vidioc_enum_fmt_vid_cap_mplane ||
-	    ops->vidioc_enum_fmt_vid_out_mplane ||
-	    ops->vidioc_enum_fmt_vid_overlay ||
-	    ops->vidioc_enum_fmt_type_private)
-		set_bit(_IOC_NR(VIDIOC_ENUM_FMT), valid_ioctls);
-	if (ops->vidioc_g_fmt_vid_cap ||
-	    ops->vidioc_g_fmt_vid_out ||
-	    ops->vidioc_g_fmt_vid_cap_mplane ||
-	    ops->vidioc_g_fmt_vid_out_mplane ||
-	    ops->vidioc_g_fmt_vid_overlay ||
-	    ops->vidioc_g_fmt_vbi_cap ||
-	    ops->vidioc_g_fmt_vid_out_overlay ||
-	    ops->vidioc_g_fmt_vbi_out ||
-	    ops->vidioc_g_fmt_sliced_vbi_cap ||
-	    ops->vidioc_g_fmt_sliced_vbi_out ||
-	    ops->vidioc_g_fmt_type_private)
-		set_bit(_IOC_NR(VIDIOC_G_FMT), valid_ioctls);
-	if (ops->vidioc_s_fmt_vid_cap ||
-	    ops->vidioc_s_fmt_vid_out ||
-	    ops->vidioc_s_fmt_vid_cap_mplane ||
-	    ops->vidioc_s_fmt_vid_out_mplane ||
-	    ops->vidioc_s_fmt_vid_overlay ||
-	    ops->vidioc_s_fmt_vbi_cap ||
-	    ops->vidioc_s_fmt_vid_out_overlay ||
-	    ops->vidioc_s_fmt_vbi_out ||
-	    ops->vidioc_s_fmt_sliced_vbi_cap ||
-	    ops->vidioc_s_fmt_sliced_vbi_out ||
-	    ops->vidioc_s_fmt_type_private)
-		set_bit(_IOC_NR(VIDIOC_S_FMT), valid_ioctls);
-	if (ops->vidioc_try_fmt_vid_cap ||
-	    ops->vidioc_try_fmt_vid_out ||
-	    ops->vidioc_try_fmt_vid_cap_mplane ||
-	    ops->vidioc_try_fmt_vid_out_mplane ||
-	    ops->vidioc_try_fmt_vid_overlay ||
-	    ops->vidioc_try_fmt_vbi_cap ||
-	    ops->vidioc_try_fmt_vid_out_overlay ||
-	    ops->vidioc_try_fmt_vbi_out ||
-	    ops->vidioc_try_fmt_sliced_vbi_cap ||
-	    ops->vidioc_try_fmt_sliced_vbi_out ||
-	    ops->vidioc_try_fmt_type_private)
-		set_bit(_IOC_NR(VIDIOC_TRY_FMT), valid_ioctls);
-	SET_VALID_IOCTL(ops, VIDIOC_REQBUFS, vidioc_reqbufs);
-	SET_VALID_IOCTL(ops, VIDIOC_QUERYBUF, vidioc_querybuf);
-	SET_VALID_IOCTL(ops, VIDIOC_QBUF, vidioc_qbuf);
-	SET_VALID_IOCTL(ops, VIDIOC_DQBUF, vidioc_dqbuf);
-	SET_VALID_IOCTL(ops, VIDIOC_OVERLAY, vidioc_overlay);
-	SET_VALID_IOCTL(ops, VIDIOC_G_FBUF, vidioc_g_fbuf);
-	SET_VALID_IOCTL(ops, VIDIOC_S_FBUF, vidioc_s_fbuf);
-	SET_VALID_IOCTL(ops, VIDIOC_STREAMON, vidioc_streamon);
-	SET_VALID_IOCTL(ops, VIDIOC_STREAMOFF, vidioc_streamoff);
-	if (vdev->tvnorms)
-		set_bit(_IOC_NR(VIDIOC_ENUMSTD), valid_ioctls);
-	if (ops->vidioc_g_std || vdev->current_norm)
-		set_bit(_IOC_NR(VIDIOC_G_STD), valid_ioctls);
-	SET_VALID_IOCTL(ops, VIDIOC_S_STD, vidioc_s_std);
-	SET_VALID_IOCTL(ops, VIDIOC_QUERYSTD, vidioc_querystd);
-	SET_VALID_IOCTL(ops, VIDIOC_ENUMINPUT, vidioc_enum_input);
-	SET_VALID_IOCTL(ops, VIDIOC_G_INPUT, vidioc_g_input);
-	SET_VALID_IOCTL(ops, VIDIOC_S_INPUT, vidioc_s_input);
-	SET_VALID_IOCTL(ops, VIDIOC_ENUMOUTPUT, vidioc_enum_output);
-	SET_VALID_IOCTL(ops, VIDIOC_G_OUTPUT, vidioc_g_output);
-	SET_VALID_IOCTL(ops, VIDIOC_S_OUTPUT, vidioc_s_output);
-	/* Note: the control handler can also be passed through the filehandle,
-	   and that can't be tested here. If the bit for these control ioctls
-	   is set, then the ioctl is valid. But if it is 0, then it can still
-	   be valid if the filehandle passed the control handler. */
-	if (vdev->ctrl_handler || ops->vidioc_queryctrl)
-		set_bit(_IOC_NR(VIDIOC_QUERYCTRL), valid_ioctls);
-	if (vdev->ctrl_handler || ops->vidioc_g_ctrl || ops->vidioc_g_ext_ctrls)
-		set_bit(_IOC_NR(VIDIOC_G_CTRL), valid_ioctls);
-	if (vdev->ctrl_handler || ops->vidioc_s_ctrl || ops->vidioc_s_ext_ctrls)
-		set_bit(_IOC_NR(VIDIOC_S_CTRL), valid_ioctls);
-	if (vdev->ctrl_handler || ops->vidioc_g_ext_ctrls)
-		set_bit(_IOC_NR(VIDIOC_G_EXT_CTRLS), valid_ioctls);
-	if (vdev->ctrl_handler || ops->vidioc_s_ext_ctrls)
-		set_bit(_IOC_NR(VIDIOC_S_EXT_CTRLS), valid_ioctls);
-	if (vdev->ctrl_handler || ops->vidioc_try_ext_ctrls)
-		set_bit(_IOC_NR(VIDIOC_TRY_EXT_CTRLS), valid_ioctls);
-	if (vdev->ctrl_handler || ops->vidioc_querymenu)
-		set_bit(_IOC_NR(VIDIOC_QUERYMENU), valid_ioctls);
-	SET_VALID_IOCTL(ops, VIDIOC_ENUMAUDIO, vidioc_enumaudio);
-	SET_VALID_IOCTL(ops, VIDIOC_G_AUDIO, vidioc_g_audio);
-	SET_VALID_IOCTL(ops, VIDIOC_S_AUDIO, vidioc_s_audio);
-	SET_VALID_IOCTL(ops, VIDIOC_ENUMAUDOUT, vidioc_enumaudout);
-	SET_VALID_IOCTL(ops, VIDIOC_G_AUDOUT, vidioc_g_audout);
-	SET_VALID_IOCTL(ops, VIDIOC_S_AUDOUT, vidioc_s_audout);
-	SET_VALID_IOCTL(ops, VIDIOC_G_MODULATOR, vidioc_g_modulator);
-	SET_VALID_IOCTL(ops, VIDIOC_S_MODULATOR, vidioc_s_modulator);
-	if (ops->vidioc_g_crop || ops->vidioc_g_selection)
-		set_bit(_IOC_NR(VIDIOC_G_CROP), valid_ioctls);
-	if (ops->vidioc_s_crop || ops->vidioc_s_selection)
-		set_bit(_IOC_NR(VIDIOC_S_CROP), valid_ioctls);
-	SET_VALID_IOCTL(ops, VIDIOC_G_SELECTION, vidioc_g_selection);
-	SET_VALID_IOCTL(ops, VIDIOC_S_SELECTION, vidioc_s_selection);
-	if (ops->vidioc_cropcap || ops->vidioc_g_selection)
-		set_bit(_IOC_NR(VIDIOC_CROPCAP), valid_ioctls);
-	SET_VALID_IOCTL(ops, VIDIOC_G_JPEGCOMP, vidioc_g_jpegcomp);
-	SET_VALID_IOCTL(ops, VIDIOC_S_JPEGCOMP, vidioc_s_jpegcomp);
-	SET_VALID_IOCTL(ops, VIDIOC_G_ENC_INDEX, vidioc_g_enc_index);
-	SET_VALID_IOCTL(ops, VIDIOC_ENCODER_CMD, vidioc_encoder_cmd);
-	SET_VALID_IOCTL(ops, VIDIOC_TRY_ENCODER_CMD, vidioc_try_encoder_cmd);
-	SET_VALID_IOCTL(ops, VIDIOC_DECODER_CMD, vidioc_decoder_cmd);
-	SET_VALID_IOCTL(ops, VIDIOC_TRY_DECODER_CMD, vidioc_try_decoder_cmd);
-	if (ops->vidioc_g_parm || (vdev->vfl_type == VFL_TYPE_GRABBER &&
-					(ops->vidioc_g_std || vdev->tvnorms)))
-		set_bit(_IOC_NR(VIDIOC_G_PARM), valid_ioctls);
-	SET_VALID_IOCTL(ops, VIDIOC_S_PARM, vidioc_s_parm);
-	SET_VALID_IOCTL(ops, VIDIOC_G_TUNER, vidioc_g_tuner);
-	SET_VALID_IOCTL(ops, VIDIOC_S_TUNER, vidioc_s_tuner);
-	SET_VALID_IOCTL(ops, VIDIOC_G_FREQUENCY, vidioc_g_frequency);
-	SET_VALID_IOCTL(ops, VIDIOC_S_FREQUENCY, vidioc_s_frequency);
-	SET_VALID_IOCTL(ops, VIDIOC_G_SLICED_VBI_CAP, vidioc_g_sliced_vbi_cap);
-	SET_VALID_IOCTL(ops, VIDIOC_LOG_STATUS, vidioc_log_status);
-#ifdef CONFIG_VIDEO_ADV_DEBUG
-	SET_VALID_IOCTL(ops, VIDIOC_DBG_G_REGISTER, vidioc_g_register);
-	SET_VALID_IOCTL(ops, VIDIOC_DBG_S_REGISTER, vidioc_s_register);
-#endif
-	SET_VALID_IOCTL(ops, VIDIOC_DBG_G_CHIP_IDENT, vidioc_g_chip_ident);
-	SET_VALID_IOCTL(ops, VIDIOC_S_HW_FREQ_SEEK, vidioc_s_hw_freq_seek);
-	SET_VALID_IOCTL(ops, VIDIOC_ENUM_FRAMESIZES, vidioc_enum_framesizes);
-	SET_VALID_IOCTL(ops, VIDIOC_ENUM_FRAMEINTERVALS, vidioc_enum_frameintervals);
-	SET_VALID_IOCTL(ops, VIDIOC_ENUM_DV_PRESETS, vidioc_enum_dv_presets);
-	SET_VALID_IOCTL(ops, VIDIOC_S_DV_PRESET, vidioc_s_dv_preset);
-	SET_VALID_IOCTL(ops, VIDIOC_G_DV_PRESET, vidioc_g_dv_preset);
-	SET_VALID_IOCTL(ops, VIDIOC_QUERY_DV_PRESET, vidioc_query_dv_preset);
-	SET_VALID_IOCTL(ops, VIDIOC_S_DV_TIMINGS, vidioc_s_dv_timings);
-	SET_VALID_IOCTL(ops, VIDIOC_G_DV_TIMINGS, vidioc_g_dv_timings);
-	SET_VALID_IOCTL(ops, VIDIOC_ENUM_DV_TIMINGS, vidioc_enum_dv_timings);
-	SET_VALID_IOCTL(ops, VIDIOC_QUERY_DV_TIMINGS, vidioc_query_dv_timings);
-	SET_VALID_IOCTL(ops, VIDIOC_DV_TIMINGS_CAP, vidioc_dv_timings_cap);
-	/* yes, really vidioc_subscribe_event */
-	SET_VALID_IOCTL(ops, VIDIOC_DQEVENT, vidioc_subscribe_event);
-	SET_VALID_IOCTL(ops, VIDIOC_SUBSCRIBE_EVENT, vidioc_subscribe_event);
-	SET_VALID_IOCTL(ops, VIDIOC_UNSUBSCRIBE_EVENT, vidioc_unsubscribe_event);
-	SET_VALID_IOCTL(ops, VIDIOC_CREATE_BUFS, vidioc_create_bufs);
-	SET_VALID_IOCTL(ops, VIDIOC_PREPARE_BUF, vidioc_prepare_buf);
-	if (ops->vidioc_enum_freq_bands || ops->vidioc_g_tuner || ops->vidioc_g_modulator)
-		set_bit(_IOC_NR(VIDIOC_ENUM_FREQ_BANDS), valid_ioctls);
-	bitmap_andnot(vdev->valid_ioctls, valid_ioctls, vdev->valid_ioctls,
-			BASE_VIDIOC_PRIVATE);
-}
-
-/**
- *	__video_register_device - register video4linux devices
- *	@vdev: video device structure we want to register
- *	@type: type of device to register
- *	@nr:   which device node number (0 == /dev/video0, 1 == /dev/video1, ...
- *             -1 == first free)
- *	@warn_if_nr_in_use: warn if the desired device node number
- *	       was already in use and another number was chosen instead.
- *	@owner: module that owns the video device node
- *
- *	The registration code assigns minor numbers and device node numbers
- *	based on the requested type and registers the new device node with
- *	the kernel.
- *
- *	This function assumes that struct video_device was zeroed when it
- *	was allocated and does not contain any stale date.
- *
- *	An error is returned if no free minor or device node number could be
- *	found, or if the registration of the device node failed.
- *
- *	Zero is returned on success.
- *
- *	Valid types are
- *
- *	%VFL_TYPE_GRABBER - A frame grabber
- *
- *	%VFL_TYPE_VBI - Vertical blank data (undecoded)
- *
- *	%VFL_TYPE_RADIO - A radio card
- *
- *	%VFL_TYPE_SUBDEV - A subdevice
- */
-int __video_register_device(struct video_device *vdev, int type, int nr,
-		int warn_if_nr_in_use, struct module *owner)
-{
-	int i = 0;
-	int ret;
-	int minor_offset = 0;
-	int minor_cnt = VIDEO_NUM_DEVICES;
-	const char *name_base;
-
-	/* A minor value of -1 marks this video device as never
-	   having been registered */
-	vdev->minor = -1;
-
-	/* the release callback MUST be present */
-	if (WARN_ON(!vdev->release))
-		return -EINVAL;
-
-	/* v4l2_fh support */
-	spin_lock_init(&vdev->fh_lock);
-	INIT_LIST_HEAD(&vdev->fh_list);
-
-	/* Part 1: check device type */
-	switch (type) {
-	case VFL_TYPE_GRABBER:
-		name_base = "video";
-		break;
-	case VFL_TYPE_VBI:
-		name_base = "vbi";
-		break;
-	case VFL_TYPE_RADIO:
-		name_base = "radio";
-		break;
-	case VFL_TYPE_SUBDEV:
-		name_base = "v4l-subdev";
-		break;
-	default:
-		printk(KERN_ERR "%s called with unknown type: %d\n",
-		       __func__, type);
-		return -EINVAL;
-	}
-
-	vdev->vfl_type = type;
-	vdev->cdev = NULL;
-	if (vdev->v4l2_dev) {
-		if (vdev->v4l2_dev->dev)
-			vdev->parent = vdev->v4l2_dev->dev;
-		if (vdev->ctrl_handler == NULL)
-			vdev->ctrl_handler = vdev->v4l2_dev->ctrl_handler;
-		/* If the prio state pointer is NULL, then use the v4l2_device
-		   prio state. */
-		if (vdev->prio == NULL)
-			vdev->prio = &vdev->v4l2_dev->prio;
-	}
-
-	/* Part 2: find a free minor, device node number and device index. */
-#ifdef CONFIG_VIDEO_FIXED_MINOR_RANGES
-	/* Keep the ranges for the first four types for historical
-	 * reasons.
-	 * Newer devices (not yet in place) should use the range
-	 * of 128-191 and just pick the first free minor there
-	 * (new style). */
-	switch (type) {
-	case VFL_TYPE_GRABBER:
-		minor_offset = 0;
-		minor_cnt = 64;
-		break;
-	case VFL_TYPE_RADIO:
-		minor_offset = 64;
-		minor_cnt = 64;
-		break;
-	case VFL_TYPE_VBI:
-		minor_offset = 224;
-		minor_cnt = 32;
-		break;
-	default:
-		minor_offset = 128;
-		minor_cnt = 64;
-		break;
-	}
-#endif
-
-	/* Pick a device node number */
-	mutex_lock(&videodev_lock);
-	nr = devnode_find(vdev, nr == -1 ? 0 : nr, minor_cnt);
-	if (nr == minor_cnt)
-		nr = devnode_find(vdev, 0, minor_cnt);
-	if (nr == minor_cnt) {
-		printk(KERN_ERR "could not get a free device node number\n");
-		mutex_unlock(&videodev_lock);
-		return -ENFILE;
-	}
-#ifdef CONFIG_VIDEO_FIXED_MINOR_RANGES
-	/* 1-on-1 mapping of device node number to minor number */
-	i = nr;
-#else
-	/* The device node number and minor numbers are independent, so
-	   we just find the first free minor number. */
-	for (i = 0; i < VIDEO_NUM_DEVICES; i++)
-		if (video_device[i] == NULL)
-			break;
-	if (i == VIDEO_NUM_DEVICES) {
-		mutex_unlock(&videodev_lock);
-		printk(KERN_ERR "could not get a free minor\n");
-		return -ENFILE;
-	}
-#endif
-	vdev->minor = i + minor_offset;
-	vdev->num = nr;
-	devnode_set(vdev);
-
-	/* Should not happen since we thought this minor was free */
-	WARN_ON(video_device[vdev->minor] != NULL);
-	vdev->index = get_index(vdev);
-	mutex_unlock(&videodev_lock);
-
-	if (vdev->ioctl_ops)
-		determine_valid_ioctls(vdev);
-
-	/* Part 3: Initialize the character device */
-	vdev->cdev = cdev_alloc();
-	if (vdev->cdev == NULL) {
-		ret = -ENOMEM;
-		goto cleanup;
-	}
-	vdev->cdev->ops = &v4l2_fops;
-	vdev->cdev->owner = owner;
-	ret = cdev_add(vdev->cdev, MKDEV(VIDEO_MAJOR, vdev->minor), 1);
-	if (ret < 0) {
-		printk(KERN_ERR "%s: cdev_add failed\n", __func__);
-		kfree(vdev->cdev);
-		vdev->cdev = NULL;
-		goto cleanup;
-	}
-
-	/* Part 4: register the device with sysfs */
-	vdev->dev.class = &video_class;
-	vdev->dev.devt = MKDEV(VIDEO_MAJOR, vdev->minor);
-	if (vdev->parent)
-		vdev->dev.parent = vdev->parent;
-	dev_set_name(&vdev->dev, "%s%d", name_base, vdev->num);
-	ret = device_register(&vdev->dev);
-	if (ret < 0) {
-		printk(KERN_ERR "%s: device_register failed\n", __func__);
-		goto cleanup;
-	}
-	/* Register the release callback that will be called when the last
-	   reference to the device goes away. */
-	vdev->dev.release = v4l2_device_release;
-
-	if (nr != -1 && nr != vdev->num && warn_if_nr_in_use)
-		printk(KERN_WARNING "%s: requested %s%d, got %s\n", __func__,
-			name_base, nr, video_device_node_name(vdev));
-
-	/* Increase v4l2_device refcount */
-	if (vdev->v4l2_dev)
-		v4l2_device_get(vdev->v4l2_dev);
-
-#if defined(CONFIG_MEDIA_CONTROLLER)
-	/* Part 5: Register the entity. */
-	if (vdev->v4l2_dev && vdev->v4l2_dev->mdev &&
-	    vdev->vfl_type != VFL_TYPE_SUBDEV) {
-		vdev->entity.type = MEDIA_ENT_T_DEVNODE_V4L;
-		vdev->entity.name = vdev->name;
-		vdev->entity.info.v4l.major = VIDEO_MAJOR;
-		vdev->entity.info.v4l.minor = vdev->minor;
-		ret = media_device_register_entity(vdev->v4l2_dev->mdev,
-			&vdev->entity);
-		if (ret < 0)
-			printk(KERN_WARNING
-			       "%s: media_device_register_entity failed\n",
-			       __func__);
-	}
-#endif
-	/* Part 6: Activate this minor. The char device can now be used. */
-	set_bit(V4L2_FL_REGISTERED, &vdev->flags);
-	mutex_lock(&videodev_lock);
-	video_device[vdev->minor] = vdev;
-	mutex_unlock(&videodev_lock);
-
-	return 0;
-
-cleanup:
-	mutex_lock(&videodev_lock);
-	if (vdev->cdev)
-		cdev_del(vdev->cdev);
-	devnode_clear(vdev);
-	mutex_unlock(&videodev_lock);
-	/* Mark this video device as never having been registered. */
-	vdev->minor = -1;
-	return ret;
-}
-EXPORT_SYMBOL(__video_register_device);
-
-/**
- *	video_unregister_device - unregister a video4linux device
- *	@vdev: the device to unregister
- *
- *	This unregisters the passed device. Future open calls will
- *	be met with errors.
- */
-void video_unregister_device(struct video_device *vdev)
-{
-	/* Check if vdev was ever registered at all */
-	if (!vdev || !video_is_registered(vdev))
-		return;
-
-	mutex_lock(&videodev_lock);
-	/* This must be in a critical section to prevent a race with v4l2_open.
-	 * Once this bit has been cleared video_get may never be called again.
-	 */
-	clear_bit(V4L2_FL_REGISTERED, &vdev->flags);
-	mutex_unlock(&videodev_lock);
-	device_unregister(&vdev->dev);
-}
-EXPORT_SYMBOL(video_unregister_device);
-
-/*
- *	Initialise video for linux
- */
-static int __init videodev_init(void)
-{
-	dev_t dev = MKDEV(VIDEO_MAJOR, 0);
-	int ret;
-
-	printk(KERN_INFO "Linux video capture interface: v2.00\n");
-	ret = register_chrdev_region(dev, VIDEO_NUM_DEVICES, VIDEO_NAME);
-	if (ret < 0) {
-		printk(KERN_WARNING "videodev: unable to get major %d\n",
-				VIDEO_MAJOR);
-		return ret;
-	}
-
-	ret = class_register(&video_class);
-	if (ret < 0) {
-		unregister_chrdev_region(dev, VIDEO_NUM_DEVICES);
-		printk(KERN_WARNING "video_dev: class_register failed\n");
-		return -EIO;
-	}
-
-	return 0;
-}
-
-static void __exit videodev_exit(void)
-{
-	dev_t dev = MKDEV(VIDEO_MAJOR, 0);
-
-	class_unregister(&video_class);
-	unregister_chrdev_region(dev, VIDEO_NUM_DEVICES);
-}
-
-subsys_initcall(videodev_init);
-module_exit(videodev_exit)
-
-MODULE_AUTHOR("Alan Cox, Mauro Carvalho Chehab <mchehab@infradead.org>");
-MODULE_DESCRIPTION("Device registrar for Video4Linux drivers v2");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS_CHARDEV_MAJOR(VIDEO_MAJOR);
-
-
-/*
- * Local variables:
- * c-basic-offset: 8
- * End:
- */
diff --git a/drivers/media/video/v4l2-device.c b/drivers/media/video/v4l2-device.c
deleted file mode 100644
index 1f203b85a637..000000000000
--- a/drivers/media/video/v4l2-device.c
+++ /dev/null
@@ -1,280 +0,0 @@
-/*
-    V4L2 device support.
-
-    Copyright (C) 2008  Hans Verkuil <hverkuil@xs4all.nl>
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#include <linux/types.h>
-#include <linux/ioctl.h>
-#include <linux/module.h>
-#include <linux/i2c.h>
-#include <linux/slab.h>
-#if defined(CONFIG_SPI)
-#include <linux/spi/spi.h>
-#endif
-#include <linux/videodev2.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-ctrls.h>
-
-int v4l2_device_register(struct device *dev, struct v4l2_device *v4l2_dev)
-{
-	if (v4l2_dev == NULL)
-		return -EINVAL;
-
-	INIT_LIST_HEAD(&v4l2_dev->subdevs);
-	spin_lock_init(&v4l2_dev->lock);
-	mutex_init(&v4l2_dev->ioctl_lock);
-	v4l2_prio_init(&v4l2_dev->prio);
-	kref_init(&v4l2_dev->ref);
-	get_device(dev);
-	v4l2_dev->dev = dev;
-	if (dev == NULL) {
-		/* If dev == NULL, then name must be filled in by the caller */
-		WARN_ON(!v4l2_dev->name[0]);
-		return 0;
-	}
-
-	/* Set name to driver name + device name if it is empty. */
-	if (!v4l2_dev->name[0])
-		snprintf(v4l2_dev->name, sizeof(v4l2_dev->name), "%s %s",
-			dev->driver->name, dev_name(dev));
-	if (!dev_get_drvdata(dev))
-		dev_set_drvdata(dev, v4l2_dev);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(v4l2_device_register);
-
-static void v4l2_device_release(struct kref *ref)
-{
-	struct v4l2_device *v4l2_dev =
-		container_of(ref, struct v4l2_device, ref);
-
-	if (v4l2_dev->release)
-		v4l2_dev->release(v4l2_dev);
-}
-
-int v4l2_device_put(struct v4l2_device *v4l2_dev)
-{
-	return kref_put(&v4l2_dev->ref, v4l2_device_release);
-}
-EXPORT_SYMBOL_GPL(v4l2_device_put);
-
-int v4l2_device_set_name(struct v4l2_device *v4l2_dev, const char *basename,
-						atomic_t *instance)
-{
-	int num = atomic_inc_return(instance) - 1;
-	int len = strlen(basename);
-
-	if (basename[len - 1] >= '0' && basename[len - 1] <= '9')
-		snprintf(v4l2_dev->name, sizeof(v4l2_dev->name),
-				"%s-%d", basename, num);
-	else
-		snprintf(v4l2_dev->name, sizeof(v4l2_dev->name),
-				"%s%d", basename, num);
-	return num;
-}
-EXPORT_SYMBOL_GPL(v4l2_device_set_name);
-
-void v4l2_device_disconnect(struct v4l2_device *v4l2_dev)
-{
-	if (v4l2_dev->dev == NULL)
-		return;
-
-	if (dev_get_drvdata(v4l2_dev->dev) == v4l2_dev)
-		dev_set_drvdata(v4l2_dev->dev, NULL);
-	put_device(v4l2_dev->dev);
-	v4l2_dev->dev = NULL;
-}
-EXPORT_SYMBOL_GPL(v4l2_device_disconnect);
-
-void v4l2_device_unregister(struct v4l2_device *v4l2_dev)
-{
-	struct v4l2_subdev *sd, *next;
-
-	if (v4l2_dev == NULL)
-		return;
-	v4l2_device_disconnect(v4l2_dev);
-
-	/* Unregister subdevs */
-	list_for_each_entry_safe(sd, next, &v4l2_dev->subdevs, list) {
-		v4l2_device_unregister_subdev(sd);
-#if defined(CONFIG_I2C) || (defined(CONFIG_I2C_MODULE) && defined(MODULE))
-		if (sd->flags & V4L2_SUBDEV_FL_IS_I2C) {
-			struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-			/* We need to unregister the i2c client explicitly.
-			   We cannot rely on i2c_del_adapter to always
-			   unregister clients for us, since if the i2c bus
-			   is a platform bus, then it is never deleted. */
-			if (client)
-				i2c_unregister_device(client);
-			continue;
-		}
-#endif
-#if defined(CONFIG_SPI)
-		if (sd->flags & V4L2_SUBDEV_FL_IS_SPI) {
-			struct spi_device *spi = v4l2_get_subdevdata(sd);
-
-			if (spi)
-				spi_unregister_device(spi);
-			continue;
-		}
-#endif
-	}
-}
-EXPORT_SYMBOL_GPL(v4l2_device_unregister);
-
-int v4l2_device_register_subdev(struct v4l2_device *v4l2_dev,
-				struct v4l2_subdev *sd)
-{
-#if defined(CONFIG_MEDIA_CONTROLLER)
-	struct media_entity *entity = &sd->entity;
-#endif
-	int err;
-
-	/* Check for valid input */
-	if (v4l2_dev == NULL || sd == NULL || !sd->name[0])
-		return -EINVAL;
-
-	/* Warn if we apparently re-register a subdev */
-	WARN_ON(sd->v4l2_dev != NULL);
-
-	if (!try_module_get(sd->owner))
-		return -ENODEV;
-
-	sd->v4l2_dev = v4l2_dev;
-	if (sd->internal_ops && sd->internal_ops->registered) {
-		err = sd->internal_ops->registered(sd);
-		if (err) {
-			module_put(sd->owner);
-			return err;
-		}
-	}
-
-	/* This just returns 0 if either of the two args is NULL */
-	err = v4l2_ctrl_add_handler(v4l2_dev->ctrl_handler, sd->ctrl_handler);
-	if (err) {
-		if (sd->internal_ops && sd->internal_ops->unregistered)
-			sd->internal_ops->unregistered(sd);
-		module_put(sd->owner);
-		return err;
-	}
-
-#if defined(CONFIG_MEDIA_CONTROLLER)
-	/* Register the entity. */
-	if (v4l2_dev->mdev) {
-		err = media_device_register_entity(v4l2_dev->mdev, entity);
-		if (err < 0) {
-			if (sd->internal_ops && sd->internal_ops->unregistered)
-				sd->internal_ops->unregistered(sd);
-			module_put(sd->owner);
-			return err;
-		}
-	}
-#endif
-
-	spin_lock(&v4l2_dev->lock);
-	list_add_tail(&sd->list, &v4l2_dev->subdevs);
-	spin_unlock(&v4l2_dev->lock);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(v4l2_device_register_subdev);
-
-static void v4l2_device_release_subdev_node(struct video_device *vdev)
-{
-	struct v4l2_subdev *sd = video_get_drvdata(vdev);
-	sd->devnode = NULL;
-	kfree(vdev);
-}
-
-int v4l2_device_register_subdev_nodes(struct v4l2_device *v4l2_dev)
-{
-	struct video_device *vdev;
-	struct v4l2_subdev *sd;
-	int err;
-
-	/* Register a device node for every subdev marked with the
-	 * V4L2_SUBDEV_FL_HAS_DEVNODE flag.
-	 */
-	list_for_each_entry(sd, &v4l2_dev->subdevs, list) {
-		if (!(sd->flags & V4L2_SUBDEV_FL_HAS_DEVNODE))
-			continue;
-
-		vdev = kzalloc(sizeof(*vdev), GFP_KERNEL);
-		if (!vdev) {
-			err = -ENOMEM;
-			goto clean_up;
-		}
-
-		video_set_drvdata(vdev, sd);
-		strlcpy(vdev->name, sd->name, sizeof(vdev->name));
-		vdev->v4l2_dev = v4l2_dev;
-		vdev->fops = &v4l2_subdev_fops;
-		vdev->release = v4l2_device_release_subdev_node;
-		vdev->ctrl_handler = sd->ctrl_handler;
-		err = __video_register_device(vdev, VFL_TYPE_SUBDEV, -1, 1,
-					      sd->owner);
-		if (err < 0) {
-			kfree(vdev);
-			goto clean_up;
-		}
-#if defined(CONFIG_MEDIA_CONTROLLER)
-		sd->entity.info.v4l.major = VIDEO_MAJOR;
-		sd->entity.info.v4l.minor = vdev->minor;
-#endif
-		sd->devnode = vdev;
-	}
-	return 0;
-
-clean_up:
-	list_for_each_entry(sd, &v4l2_dev->subdevs, list) {
-		if (!sd->devnode)
-			break;
-		video_unregister_device(sd->devnode);
-	}
-
-	return err;
-}
-EXPORT_SYMBOL_GPL(v4l2_device_register_subdev_nodes);
-
-void v4l2_device_unregister_subdev(struct v4l2_subdev *sd)
-{
-	struct v4l2_device *v4l2_dev;
-
-	/* return if it isn't registered */
-	if (sd == NULL || sd->v4l2_dev == NULL)
-		return;
-
-	v4l2_dev = sd->v4l2_dev;
-
-	spin_lock(&v4l2_dev->lock);
-	list_del(&sd->list);
-	spin_unlock(&v4l2_dev->lock);
-
-	if (sd->internal_ops && sd->internal_ops->unregistered)
-		sd->internal_ops->unregistered(sd);
-	sd->v4l2_dev = NULL;
-
-#if defined(CONFIG_MEDIA_CONTROLLER)
-	if (v4l2_dev->mdev)
-		media_device_unregister_entity(&sd->entity);
-#endif
-	video_unregister_device(sd->devnode);
-	module_put(sd->owner);
-}
-EXPORT_SYMBOL_GPL(v4l2_device_unregister_subdev);
diff --git a/drivers/media/video/v4l2-event.c b/drivers/media/video/v4l2-event.c
deleted file mode 100644
index ef2a33c94045..000000000000
--- a/drivers/media/video/v4l2-event.c
+++ /dev/null
@@ -1,313 +0,0 @@
-/*
- * v4l2-event.c
- *
- * V4L2 events.
- *
- * Copyright (C) 2009--2010 Nokia Corporation.
- *
- * Contact: Sakari Ailus <sakari.ailus@maxwell.research.nokia.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA
- */
-
-#include <media/v4l2-dev.h>
-#include <media/v4l2-fh.h>
-#include <media/v4l2-event.h>
-
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/export.h>
-
-static unsigned sev_pos(const struct v4l2_subscribed_event *sev, unsigned idx)
-{
-	idx += sev->first;
-	return idx >= sev->elems ? idx - sev->elems : idx;
-}
-
-static int __v4l2_event_dequeue(struct v4l2_fh *fh, struct v4l2_event *event)
-{
-	struct v4l2_kevent *kev;
-	unsigned long flags;
-
-	spin_lock_irqsave(&fh->vdev->fh_lock, flags);
-
-	if (list_empty(&fh->available)) {
-		spin_unlock_irqrestore(&fh->vdev->fh_lock, flags);
-		return -ENOENT;
-	}
-
-	WARN_ON(fh->navailable == 0);
-
-	kev = list_first_entry(&fh->available, struct v4l2_kevent, list);
-	list_del(&kev->list);
-	fh->navailable--;
-
-	kev->event.pending = fh->navailable;
-	*event = kev->event;
-	kev->sev->first = sev_pos(kev->sev, 1);
-	kev->sev->in_use--;
-
-	spin_unlock_irqrestore(&fh->vdev->fh_lock, flags);
-
-	return 0;
-}
-
-int v4l2_event_dequeue(struct v4l2_fh *fh, struct v4l2_event *event,
-		       int nonblocking)
-{
-	int ret;
-
-	if (nonblocking)
-		return __v4l2_event_dequeue(fh, event);
-
-	/* Release the vdev lock while waiting */
-	if (fh->vdev->lock)
-		mutex_unlock(fh->vdev->lock);
-
-	do {
-		ret = wait_event_interruptible(fh->wait,
-					       fh->navailable != 0);
-		if (ret < 0)
-			break;
-
-		ret = __v4l2_event_dequeue(fh, event);
-	} while (ret == -ENOENT);
-
-	if (fh->vdev->lock)
-		mutex_lock(fh->vdev->lock);
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(v4l2_event_dequeue);
-
-/* Caller must hold fh->vdev->fh_lock! */
-static struct v4l2_subscribed_event *v4l2_event_subscribed(
-		struct v4l2_fh *fh, u32 type, u32 id)
-{
-	struct v4l2_subscribed_event *sev;
-
-	assert_spin_locked(&fh->vdev->fh_lock);
-
-	list_for_each_entry(sev, &fh->subscribed, list)
-		if (sev->type == type && sev->id == id)
-			return sev;
-
-	return NULL;
-}
-
-static void __v4l2_event_queue_fh(struct v4l2_fh *fh, const struct v4l2_event *ev,
-		const struct timespec *ts)
-{
-	struct v4l2_subscribed_event *sev;
-	struct v4l2_kevent *kev;
-	bool copy_payload = true;
-
-	/* Are we subscribed? */
-	sev = v4l2_event_subscribed(fh, ev->type, ev->id);
-	if (sev == NULL)
-		return;
-
-	/*
-	 * If the event has been added to the fh->subscribed list, but its
-	 * add op has not completed yet elems will be 0, treat this as
-	 * not being subscribed.
-	 */
-	if (!sev->elems)
-		return;
-
-	/* Increase event sequence number on fh. */
-	fh->sequence++;
-
-	/* Do we have any free events? */
-	if (sev->in_use == sev->elems) {
-		/* no, remove the oldest one */
-		kev = sev->events + sev_pos(sev, 0);
-		list_del(&kev->list);
-		sev->in_use--;
-		sev->first = sev_pos(sev, 1);
-		fh->navailable--;
-		if (sev->elems == 1) {
-			if (sev->ops && sev->ops->replace) {
-				sev->ops->replace(&kev->event, ev);
-				copy_payload = false;
-			}
-		} else if (sev->ops && sev->ops->merge) {
-			struct v4l2_kevent *second_oldest =
-				sev->events + sev_pos(sev, 0);
-			sev->ops->merge(&kev->event, &second_oldest->event);
-		}
-	}
-
-	/* Take one and fill it. */
-	kev = sev->events + sev_pos(sev, sev->in_use);
-	kev->event.type = ev->type;
-	if (copy_payload)
-		kev->event.u = ev->u;
-	kev->event.id = ev->id;
-	kev->event.timestamp = *ts;
-	kev->event.sequence = fh->sequence;
-	sev->in_use++;
-	list_add_tail(&kev->list, &fh->available);
-
-	fh->navailable++;
-
-	wake_up_all(&fh->wait);
-}
-
-void v4l2_event_queue(struct video_device *vdev, const struct v4l2_event *ev)
-{
-	struct v4l2_fh *fh;
-	unsigned long flags;
-	struct timespec timestamp;
-
-	ktime_get_ts(&timestamp);
-
-	spin_lock_irqsave(&vdev->fh_lock, flags);
-
-	list_for_each_entry(fh, &vdev->fh_list, list)
-		__v4l2_event_queue_fh(fh, ev, &timestamp);
-
-	spin_unlock_irqrestore(&vdev->fh_lock, flags);
-}
-EXPORT_SYMBOL_GPL(v4l2_event_queue);
-
-void v4l2_event_queue_fh(struct v4l2_fh *fh, const struct v4l2_event *ev)
-{
-	unsigned long flags;
-	struct timespec timestamp;
-
-	ktime_get_ts(&timestamp);
-
-	spin_lock_irqsave(&fh->vdev->fh_lock, flags);
-	__v4l2_event_queue_fh(fh, ev, &timestamp);
-	spin_unlock_irqrestore(&fh->vdev->fh_lock, flags);
-}
-EXPORT_SYMBOL_GPL(v4l2_event_queue_fh);
-
-int v4l2_event_pending(struct v4l2_fh *fh)
-{
-	return fh->navailable;
-}
-EXPORT_SYMBOL_GPL(v4l2_event_pending);
-
-int v4l2_event_subscribe(struct v4l2_fh *fh,
-			 struct v4l2_event_subscription *sub, unsigned elems,
-			 const struct v4l2_subscribed_event_ops *ops)
-{
-	struct v4l2_subscribed_event *sev, *found_ev;
-	unsigned long flags;
-	unsigned i;
-
-	if (sub->type == V4L2_EVENT_ALL)
-		return -EINVAL;
-
-	if (elems < 1)
-		elems = 1;
-
-	sev = kzalloc(sizeof(*sev) + sizeof(struct v4l2_kevent) * elems, GFP_KERNEL);
-	if (!sev)
-		return -ENOMEM;
-	for (i = 0; i < elems; i++)
-		sev->events[i].sev = sev;
-	sev->type = sub->type;
-	sev->id = sub->id;
-	sev->flags = sub->flags;
-	sev->fh = fh;
-	sev->ops = ops;
-
-	spin_lock_irqsave(&fh->vdev->fh_lock, flags);
-	found_ev = v4l2_event_subscribed(fh, sub->type, sub->id);
-	if (!found_ev)
-		list_add(&sev->list, &fh->subscribed);
-	spin_unlock_irqrestore(&fh->vdev->fh_lock, flags);
-
-	if (found_ev) {
-		kfree(sev);
-		return 0; /* Already listening */
-	}
-
-	if (sev->ops && sev->ops->add) {
-		int ret = sev->ops->add(sev, elems);
-		if (ret) {
-			sev->ops = NULL;
-			v4l2_event_unsubscribe(fh, sub);
-			return ret;
-		}
-	}
-
-	/* Mark as ready for use */
-	sev->elems = elems;
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(v4l2_event_subscribe);
-
-void v4l2_event_unsubscribe_all(struct v4l2_fh *fh)
-{
-	struct v4l2_event_subscription sub;
-	struct v4l2_subscribed_event *sev;
-	unsigned long flags;
-
-	do {
-		sev = NULL;
-
-		spin_lock_irqsave(&fh->vdev->fh_lock, flags);
-		if (!list_empty(&fh->subscribed)) {
-			sev = list_first_entry(&fh->subscribed,
-					struct v4l2_subscribed_event, list);
-			sub.type = sev->type;
-			sub.id = sev->id;
-		}
-		spin_unlock_irqrestore(&fh->vdev->fh_lock, flags);
-		if (sev)
-			v4l2_event_unsubscribe(fh, &sub);
-	} while (sev);
-}
-EXPORT_SYMBOL_GPL(v4l2_event_unsubscribe_all);
-
-int v4l2_event_unsubscribe(struct v4l2_fh *fh,
-			   struct v4l2_event_subscription *sub)
-{
-	struct v4l2_subscribed_event *sev;
-	unsigned long flags;
-	int i;
-
-	if (sub->type == V4L2_EVENT_ALL) {
-		v4l2_event_unsubscribe_all(fh);
-		return 0;
-	}
-
-	spin_lock_irqsave(&fh->vdev->fh_lock, flags);
-
-	sev = v4l2_event_subscribed(fh, sub->type, sub->id);
-	if (sev != NULL) {
-		/* Remove any pending events for this subscription */
-		for (i = 0; i < sev->in_use; i++) {
-			list_del(&sev->events[sev_pos(sev, i)].list);
-			fh->navailable--;
-		}
-		list_del(&sev->list);
-	}
-
-	spin_unlock_irqrestore(&fh->vdev->fh_lock, flags);
-
-	if (sev && sev->ops && sev->ops->del)
-		sev->ops->del(sev);
-
-	kfree(sev);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(v4l2_event_unsubscribe);
diff --git a/drivers/media/video/v4l2-fh.c b/drivers/media/video/v4l2-fh.c
deleted file mode 100644
index 9e3fc040ea20..000000000000
--- a/drivers/media/video/v4l2-fh.c
+++ /dev/null
@@ -1,120 +0,0 @@
-/*
- * v4l2-fh.c
- *
- * V4L2 file handles.
- *
- * Copyright (C) 2009--2010 Nokia Corporation.
- *
- * Contact: Sakari Ailus <sakari.ailus@maxwell.research.nokia.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA
- */
-
-#include <linux/bitops.h>
-#include <linux/slab.h>
-#include <linux/export.h>
-#include <media/v4l2-dev.h>
-#include <media/v4l2-fh.h>
-#include <media/v4l2-event.h>
-#include <media/v4l2-ioctl.h>
-
-void v4l2_fh_init(struct v4l2_fh *fh, struct video_device *vdev)
-{
-	fh->vdev = vdev;
-	/* Inherit from video_device. May be overridden by the driver. */
-	fh->ctrl_handler = vdev->ctrl_handler;
-	INIT_LIST_HEAD(&fh->list);
-	set_bit(V4L2_FL_USES_V4L2_FH, &fh->vdev->flags);
-	fh->prio = V4L2_PRIORITY_UNSET;
-	init_waitqueue_head(&fh->wait);
-	INIT_LIST_HEAD(&fh->available);
-	INIT_LIST_HEAD(&fh->subscribed);
-	fh->sequence = -1;
-}
-EXPORT_SYMBOL_GPL(v4l2_fh_init);
-
-void v4l2_fh_add(struct v4l2_fh *fh)
-{
-	unsigned long flags;
-
-	if (test_bit(V4L2_FL_USE_FH_PRIO, &fh->vdev->flags))
-		v4l2_prio_open(fh->vdev->prio, &fh->prio);
-	spin_lock_irqsave(&fh->vdev->fh_lock, flags);
-	list_add(&fh->list, &fh->vdev->fh_list);
-	spin_unlock_irqrestore(&fh->vdev->fh_lock, flags);
-}
-EXPORT_SYMBOL_GPL(v4l2_fh_add);
-
-int v4l2_fh_open(struct file *filp)
-{
-	struct video_device *vdev = video_devdata(filp);
-	struct v4l2_fh *fh = kzalloc(sizeof(*fh), GFP_KERNEL);
-
-	filp->private_data = fh;
-	if (fh == NULL)
-		return -ENOMEM;
-	v4l2_fh_init(fh, vdev);
-	v4l2_fh_add(fh);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(v4l2_fh_open);
-
-void v4l2_fh_del(struct v4l2_fh *fh)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&fh->vdev->fh_lock, flags);
-	list_del_init(&fh->list);
-	spin_unlock_irqrestore(&fh->vdev->fh_lock, flags);
-	if (test_bit(V4L2_FL_USE_FH_PRIO, &fh->vdev->flags))
-		v4l2_prio_close(fh->vdev->prio, fh->prio);
-}
-EXPORT_SYMBOL_GPL(v4l2_fh_del);
-
-void v4l2_fh_exit(struct v4l2_fh *fh)
-{
-	if (fh->vdev == NULL)
-		return;
-	v4l2_event_unsubscribe_all(fh);
-	fh->vdev = NULL;
-}
-EXPORT_SYMBOL_GPL(v4l2_fh_exit);
-
-int v4l2_fh_release(struct file *filp)
-{
-	struct v4l2_fh *fh = filp->private_data;
-
-	if (fh) {
-		v4l2_fh_del(fh);
-		v4l2_fh_exit(fh);
-		kfree(fh);
-	}
-	return 0;
-}
-EXPORT_SYMBOL_GPL(v4l2_fh_release);
-
-int v4l2_fh_is_singular(struct v4l2_fh *fh)
-{
-	unsigned long flags;
-	int is_singular;
-
-	if (fh == NULL || fh->vdev == NULL)
-		return 0;
-	spin_lock_irqsave(&fh->vdev->fh_lock, flags);
-	is_singular = list_is_singular(&fh->list);
-	spin_unlock_irqrestore(&fh->vdev->fh_lock, flags);
-	return is_singular;
-}
-EXPORT_SYMBOL_GPL(v4l2_fh_is_singular);
diff --git a/drivers/media/video/v4l2-int-device.c b/drivers/media/video/v4l2-int-device.c
deleted file mode 100644
index f4473494af7a..000000000000
--- a/drivers/media/video/v4l2-int-device.c
+++ /dev/null
@@ -1,164 +0,0 @@
-/*
- * drivers/media/video/v4l2-int-device.c
- *
- * V4L2 internal ioctl interface.
- *
- * Copyright (C) 2007 Nokia Corporation.
- *
- * Contact: Sakari Ailus <sakari.ailus@nokia.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA
- */
-
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/sort.h>
-#include <linux/string.h>
-#include <linux/module.h>
-
-#include <media/v4l2-int-device.h>
-
-static DEFINE_MUTEX(mutex);
-static LIST_HEAD(int_list);
-
-void v4l2_int_device_try_attach_all(void)
-{
-	struct v4l2_int_device *m, *s;
-
-	list_for_each_entry(m, &int_list, head) {
-		if (m->type != v4l2_int_type_master)
-			continue;
-
-		list_for_each_entry(s, &int_list, head) {
-			if (s->type != v4l2_int_type_slave)
-				continue;
-
-			/* Slave is connected? */
-			if (s->u.slave->master)
-				continue;
-
-			/* Slave wants to attach to master? */
-			if (s->u.slave->attach_to[0] != 0
-			    && strncmp(m->name, s->u.slave->attach_to,
-				       V4L2NAMESIZE))
-				continue;
-
-			if (!try_module_get(m->module))
-				continue;
-
-			s->u.slave->master = m;
-			if (m->u.master->attach(s)) {
-				s->u.slave->master = NULL;
-				module_put(m->module);
-				continue;
-			}
-		}
-	}
-}
-EXPORT_SYMBOL_GPL(v4l2_int_device_try_attach_all);
-
-static int ioctl_sort_cmp(const void *a, const void *b)
-{
-	const struct v4l2_int_ioctl_desc *d1 = a, *d2 = b;
-
-	if (d1->num > d2->num)
-		return 1;
-
-	if (d1->num < d2->num)
-		return -1;
-
-	return 0;
-}
-
-int v4l2_int_device_register(struct v4l2_int_device *d)
-{
-	if (d->type == v4l2_int_type_slave)
-		sort(d->u.slave->ioctls, d->u.slave->num_ioctls,
-		     sizeof(struct v4l2_int_ioctl_desc),
-		     &ioctl_sort_cmp, NULL);
-	mutex_lock(&mutex);
-	list_add(&d->head, &int_list);
-	v4l2_int_device_try_attach_all();
-	mutex_unlock(&mutex);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(v4l2_int_device_register);
-
-void v4l2_int_device_unregister(struct v4l2_int_device *d)
-{
-	mutex_lock(&mutex);
-	list_del(&d->head);
-	if (d->type == v4l2_int_type_slave
-	    && d->u.slave->master != NULL) {
-		d->u.slave->master->u.master->detach(d);
-		module_put(d->u.slave->master->module);
-		d->u.slave->master = NULL;
-	}
-	mutex_unlock(&mutex);
-}
-EXPORT_SYMBOL_GPL(v4l2_int_device_unregister);
-
-/* Adapted from search_extable in extable.c. */
-static v4l2_int_ioctl_func *find_ioctl(struct v4l2_int_slave *slave, int cmd,
-				       v4l2_int_ioctl_func *no_such_ioctl)
-{
-	const struct v4l2_int_ioctl_desc *first = slave->ioctls;
-	const struct v4l2_int_ioctl_desc *last =
-		first + slave->num_ioctls - 1;
-
-	while (first <= last) {
-		const struct v4l2_int_ioctl_desc *mid;
-
-		mid = (last - first) / 2 + first;
-
-		if (mid->num < cmd)
-			first = mid + 1;
-		else if (mid->num > cmd)
-			last = mid - 1;
-		else
-			return mid->func;
-	}
-
-	return no_such_ioctl;
-}
-
-static int no_such_ioctl_0(struct v4l2_int_device *d)
-{
-	return -ENOIOCTLCMD;
-}
-
-int v4l2_int_ioctl_0(struct v4l2_int_device *d, int cmd)
-{
-	return ((v4l2_int_ioctl_func_0 *)
-		find_ioctl(d->u.slave, cmd,
-			   (v4l2_int_ioctl_func *)no_such_ioctl_0))(d);
-}
-EXPORT_SYMBOL_GPL(v4l2_int_ioctl_0);
-
-static int no_such_ioctl_1(struct v4l2_int_device *d, void *arg)
-{
-	return -ENOIOCTLCMD;
-}
-
-int v4l2_int_ioctl_1(struct v4l2_int_device *d, int cmd, void *arg)
-{
-	return ((v4l2_int_ioctl_func_1 *)
-		find_ioctl(d->u.slave, cmd,
-			   (v4l2_int_ioctl_func *)no_such_ioctl_1))(d, arg);
-}
-EXPORT_SYMBOL_GPL(v4l2_int_ioctl_1);
-
-MODULE_LICENSE("GPL");
diff --git a/drivers/media/video/v4l2-ioctl.c b/drivers/media/video/v4l2-ioctl.c
deleted file mode 100644
index c3b7b5f59b32..000000000000
--- a/drivers/media/video/v4l2-ioctl.c
+++ /dev/null
@@ -1,2324 +0,0 @@
-/*
- * Video capture interface for Linux version 2
- *
- * A generic framework to process V4L2 ioctl commands.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * Authors:	Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1)
- *              Mauro Carvalho Chehab <mchehab@infradead.org> (version 2)
- */
-
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/version.h>
-
-#include <linux/videodev2.h>
-
-#include <media/v4l2-common.h>
-#include <media/v4l2-ioctl.h>
-#include <media/v4l2-ctrls.h>
-#include <media/v4l2-fh.h>
-#include <media/v4l2-event.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
-#include <media/videobuf2-core.h>
-
-/* Zero out the end of the struct pointed to by p.  Everything after, but
- * not including, the specified field is cleared. */
-#define CLEAR_AFTER_FIELD(p, field) \
-	memset((u8 *)(p) + offsetof(typeof(*(p)), field) + sizeof((p)->field), \
-	0, sizeof(*(p)) - offsetof(typeof(*(p)), field) - sizeof((p)->field))
-
-struct std_descr {
-	v4l2_std_id std;
-	const char *descr;
-};
-
-static const struct std_descr standards[] = {
-	{ V4L2_STD_NTSC, 	"NTSC"      },
-	{ V4L2_STD_NTSC_M, 	"NTSC-M"    },
-	{ V4L2_STD_NTSC_M_JP, 	"NTSC-M-JP" },
-	{ V4L2_STD_NTSC_M_KR,	"NTSC-M-KR" },
-	{ V4L2_STD_NTSC_443, 	"NTSC-443"  },
-	{ V4L2_STD_PAL, 	"PAL"       },
-	{ V4L2_STD_PAL_BG, 	"PAL-BG"    },
-	{ V4L2_STD_PAL_B, 	"PAL-B"     },
-	{ V4L2_STD_PAL_B1, 	"PAL-B1"    },
-	{ V4L2_STD_PAL_G, 	"PAL-G"     },
-	{ V4L2_STD_PAL_H, 	"PAL-H"     },
-	{ V4L2_STD_PAL_I, 	"PAL-I"     },
-	{ V4L2_STD_PAL_DK, 	"PAL-DK"    },
-	{ V4L2_STD_PAL_D, 	"PAL-D"     },
-	{ V4L2_STD_PAL_D1, 	"PAL-D1"    },
-	{ V4L2_STD_PAL_K, 	"PAL-K"     },
-	{ V4L2_STD_PAL_M, 	"PAL-M"     },
-	{ V4L2_STD_PAL_N, 	"PAL-N"     },
-	{ V4L2_STD_PAL_Nc, 	"PAL-Nc"    },
-	{ V4L2_STD_PAL_60, 	"PAL-60"    },
-	{ V4L2_STD_SECAM, 	"SECAM"     },
-	{ V4L2_STD_SECAM_B, 	"SECAM-B"   },
-	{ V4L2_STD_SECAM_G, 	"SECAM-G"   },
-	{ V4L2_STD_SECAM_H, 	"SECAM-H"   },
-	{ V4L2_STD_SECAM_DK, 	"SECAM-DK"  },
-	{ V4L2_STD_SECAM_D, 	"SECAM-D"   },
-	{ V4L2_STD_SECAM_K, 	"SECAM-K"   },
-	{ V4L2_STD_SECAM_K1, 	"SECAM-K1"  },
-	{ V4L2_STD_SECAM_L, 	"SECAM-L"   },
-	{ V4L2_STD_SECAM_LC, 	"SECAM-Lc"  },
-	{ 0, 			"Unknown"   }
-};
-
-/* video4linux standard ID conversion to standard name
- */
-const char *v4l2_norm_to_name(v4l2_std_id id)
-{
-	u32 myid = id;
-	int i;
-
-	/* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle
-	   64 bit comparations. So, on that architecture, with some gcc
-	   variants, compilation fails. Currently, the max value is 30bit wide.
-	 */
-	BUG_ON(myid != id);
-
-	for (i = 0; standards[i].std; i++)
-		if (myid == standards[i].std)
-			break;
-	return standards[i].descr;
-}
-EXPORT_SYMBOL(v4l2_norm_to_name);
-
-/* Returns frame period for the given standard */
-void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod)
-{
-	if (id & V4L2_STD_525_60) {
-		frameperiod->numerator = 1001;
-		frameperiod->denominator = 30000;
-	} else {
-		frameperiod->numerator = 1;
-		frameperiod->denominator = 25;
-	}
-}
-EXPORT_SYMBOL(v4l2_video_std_frame_period);
-
-/* Fill in the fields of a v4l2_standard structure according to the
-   'id' and 'transmission' parameters.  Returns negative on error.  */
-int v4l2_video_std_construct(struct v4l2_standard *vs,
-			     int id, const char *name)
-{
-	vs->id = id;
-	v4l2_video_std_frame_period(id, &vs->frameperiod);
-	vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625;
-	strlcpy(vs->name, name, sizeof(vs->name));
-	return 0;
-}
-EXPORT_SYMBOL(v4l2_video_std_construct);
-
-/* ----------------------------------------------------------------- */
-/* some arrays for pretty-printing debug messages of enum types      */
-
-const char *v4l2_field_names[] = {
-	[V4L2_FIELD_ANY]        = "any",
-	[V4L2_FIELD_NONE]       = "none",
-	[V4L2_FIELD_TOP]        = "top",
-	[V4L2_FIELD_BOTTOM]     = "bottom",
-	[V4L2_FIELD_INTERLACED] = "interlaced",
-	[V4L2_FIELD_SEQ_TB]     = "seq-tb",
-	[V4L2_FIELD_SEQ_BT]     = "seq-bt",
-	[V4L2_FIELD_ALTERNATE]  = "alternate",
-	[V4L2_FIELD_INTERLACED_TB] = "interlaced-tb",
-	[V4L2_FIELD_INTERLACED_BT] = "interlaced-bt",
-};
-EXPORT_SYMBOL(v4l2_field_names);
-
-const char *v4l2_type_names[] = {
-	[V4L2_BUF_TYPE_VIDEO_CAPTURE]      = "vid-cap",
-	[V4L2_BUF_TYPE_VIDEO_OVERLAY]      = "vid-overlay",
-	[V4L2_BUF_TYPE_VIDEO_OUTPUT]       = "vid-out",
-	[V4L2_BUF_TYPE_VBI_CAPTURE]        = "vbi-cap",
-	[V4L2_BUF_TYPE_VBI_OUTPUT]         = "vbi-out",
-	[V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap",
-	[V4L2_BUF_TYPE_SLICED_VBI_OUTPUT]  = "sliced-vbi-out",
-	[V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay",
-	[V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane",
-	[V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane",
-};
-EXPORT_SYMBOL(v4l2_type_names);
-
-static const char *v4l2_memory_names[] = {
-	[V4L2_MEMORY_MMAP]    = "mmap",
-	[V4L2_MEMORY_USERPTR] = "userptr",
-	[V4L2_MEMORY_OVERLAY] = "overlay",
-};
-
-#define prt_names(a, arr) ((((a) >= 0) && ((a) < ARRAY_SIZE(arr))) ? \
-			   arr[a] : "unknown")
-
-/* ------------------------------------------------------------------ */
-/* debug help functions                                               */
-
-static void v4l_print_querycap(const void *arg, bool write_only)
-{
-	const struct v4l2_capability *p = arg;
-
-	pr_cont("driver=%s, card=%s, bus=%s, version=0x%08x, "
-		"capabilities=0x%08x, device_caps=0x%08x\n",
-		p->driver, p->card, p->bus_info,
-		p->version, p->capabilities, p->device_caps);
-}
-
-static void v4l_print_enuminput(const void *arg, bool write_only)
-{
-	const struct v4l2_input *p = arg;
-
-	pr_cont("index=%u, name=%s, type=%u, audioset=0x%x, tuner=%u, "
-		"std=0x%08Lx, status=0x%x, capabilities=0x%x\n",
-		p->index, p->name, p->type, p->audioset, p->tuner,
-		(unsigned long long)p->std, p->status, p->capabilities);
-}
-
-static void v4l_print_enumoutput(const void *arg, bool write_only)
-{
-	const struct v4l2_output *p = arg;
-
-	pr_cont("index=%u, name=%s, type=%u, audioset=0x%x, "
-		"modulator=%u, std=0x%08Lx, capabilities=0x%x\n",
-		p->index, p->name, p->type, p->audioset, p->modulator,
-		(unsigned long long)p->std, p->capabilities);
-}
-
-static void v4l_print_audio(const void *arg, bool write_only)
-{
-	const struct v4l2_audio *p = arg;
-
-	if (write_only)
-		pr_cont("index=%u, mode=0x%x\n", p->index, p->mode);
-	else
-		pr_cont("index=%u, name=%s, capability=0x%x, mode=0x%x\n",
-			p->index, p->name, p->capability, p->mode);
-}
-
-static void v4l_print_audioout(const void *arg, bool write_only)
-{
-	const struct v4l2_audioout *p = arg;
-
-	if (write_only)
-		pr_cont("index=%u\n", p->index);
-	else
-		pr_cont("index=%u, name=%s, capability=0x%x, mode=0x%x\n",
-			p->index, p->name, p->capability, p->mode);
-}
-
-static void v4l_print_fmtdesc(const void *arg, bool write_only)
-{
-	const struct v4l2_fmtdesc *p = arg;
-
-	pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%c%c%c%c, description='%s'\n",
-		p->index, prt_names(p->type, v4l2_type_names),
-		p->flags, (p->pixelformat & 0xff),
-		(p->pixelformat >>  8) & 0xff,
-		(p->pixelformat >> 16) & 0xff,
-		(p->pixelformat >> 24) & 0xff,
-		p->description);
-}
-
-static void v4l_print_format(const void *arg, bool write_only)
-{
-	const struct v4l2_format *p = arg;
-	const struct v4l2_pix_format *pix;
-	const struct v4l2_pix_format_mplane *mp;
-	const struct v4l2_vbi_format *vbi;
-	const struct v4l2_sliced_vbi_format *sliced;
-	const struct v4l2_window *win;
-	const struct v4l2_clip *clip;
-	unsigned i;
-
-	pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
-	switch (p->type) {
-	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT:
-		pix = &p->fmt.pix;
-		pr_cont(", width=%u, height=%u, "
-			"pixelformat=%c%c%c%c, field=%s, "
-			"bytesperline=%u sizeimage=%u, colorspace=%d\n",
-			pix->width, pix->height,
-			(pix->pixelformat & 0xff),
-			(pix->pixelformat >>  8) & 0xff,
-			(pix->pixelformat >> 16) & 0xff,
-			(pix->pixelformat >> 24) & 0xff,
-			prt_names(pix->field, v4l2_field_names),
-			pix->bytesperline, pix->sizeimage,
-			pix->colorspace);
-		break;
-	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
-		mp = &p->fmt.pix_mp;
-		pr_cont(", width=%u, height=%u, "
-			"format=%c%c%c%c, field=%s, "
-			"colorspace=%d, num_planes=%u\n",
-			mp->width, mp->height,
-			(mp->pixelformat & 0xff),
-			(mp->pixelformat >>  8) & 0xff,
-			(mp->pixelformat >> 16) & 0xff,
-			(mp->pixelformat >> 24) & 0xff,
-			prt_names(mp->field, v4l2_field_names),
-			mp->colorspace, mp->num_planes);
-		for (i = 0; i < mp->num_planes; i++)
-			printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i,
-					mp->plane_fmt[i].bytesperline,
-					mp->plane_fmt[i].sizeimage);
-		break;
-	case V4L2_BUF_TYPE_VIDEO_OVERLAY:
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
-		win = &p->fmt.win;
-		pr_cont(", wxh=%dx%d, x,y=%d,%d, field=%s, "
-			"chromakey=0x%08x, bitmap=%p, "
-			"global_alpha=0x%02x\n",
-			win->w.width, win->w.height,
-			win->w.left, win->w.top,
-			prt_names(win->field, v4l2_field_names),
-			win->chromakey, win->bitmap, win->global_alpha);
-		clip = win->clips;
-		for (i = 0; i < win->clipcount; i++) {
-			printk(KERN_DEBUG "clip %u: wxh=%dx%d, x,y=%d,%d\n",
-					i, clip->c.width, clip->c.height,
-					clip->c.left, clip->c.top);
-			clip = clip->next;
-		}
-		break;
-	case V4L2_BUF_TYPE_VBI_CAPTURE:
-	case V4L2_BUF_TYPE_VBI_OUTPUT:
-		vbi = &p->fmt.vbi;
-		pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, "
-			"sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n",
-			vbi->sampling_rate, vbi->offset,
-			vbi->samples_per_line,
-			(vbi->sample_format & 0xff),
-			(vbi->sample_format >>  8) & 0xff,
-			(vbi->sample_format >> 16) & 0xff,
-			(vbi->sample_format >> 24) & 0xff,
-			vbi->start[0], vbi->start[1],
-			vbi->count[0], vbi->count[1]);
-		break;
-	case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
-	case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
-		sliced = &p->fmt.sliced;
-		pr_cont(", service_set=0x%08x, io_size=%d\n",
-				sliced->service_set, sliced->io_size);
-		for (i = 0; i < 24; i++)
-			printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
-				sliced->service_lines[0][i],
-				sliced->service_lines[1][i]);
-		break;
-	case V4L2_BUF_TYPE_PRIVATE:
-		pr_cont("\n");
-		break;
-	}
-}
-
-static void v4l_print_framebuffer(const void *arg, bool write_only)
-{
-	const struct v4l2_framebuffer *p = arg;
-
-	pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, "
-		"height=%u, pixelformat=%c%c%c%c, "
-		"bytesperline=%u sizeimage=%u, colorspace=%d\n",
-			p->capability, p->flags, p->base,
-			p->fmt.width, p->fmt.height,
-			(p->fmt.pixelformat & 0xff),
-			(p->fmt.pixelformat >>  8) & 0xff,
-			(p->fmt.pixelformat >> 16) & 0xff,
-			(p->fmt.pixelformat >> 24) & 0xff,
-			p->fmt.bytesperline, p->fmt.sizeimage,
-			p->fmt.colorspace);
-}
-
-static void v4l_print_buftype(const void *arg, bool write_only)
-{
-	pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names));
-}
-
-static void v4l_print_modulator(const void *arg, bool write_only)
-{
-	const struct v4l2_modulator *p = arg;
-
-	if (write_only)
-		pr_cont("index=%u, txsubchans=0x%x", p->index, p->txsubchans);
-	else
-		pr_cont("index=%u, name=%s, capability=0x%x, "
-			"rangelow=%u, rangehigh=%u, txsubchans=0x%x\n",
-			p->index, p->name, p->capability,
-			p->rangelow, p->rangehigh, p->txsubchans);
-}
-
-static void v4l_print_tuner(const void *arg, bool write_only)
-{
-	const struct v4l2_tuner *p = arg;
-
-	if (write_only)
-		pr_cont("index=%u, audmode=%u\n", p->index, p->audmode);
-	else
-		pr_cont("index=%u, name=%s, type=%u, capability=0x%x, "
-			"rangelow=%u, rangehigh=%u, signal=%u, afc=%d, "
-			"rxsubchans=0x%x, audmode=%u\n",
-			p->index, p->name, p->type,
-			p->capability, p->rangelow,
-			p->rangehigh, p->signal, p->afc,
-			p->rxsubchans, p->audmode);
-}
-
-static void v4l_print_frequency(const void *arg, bool write_only)
-{
-	const struct v4l2_frequency *p = arg;
-
-	pr_cont("tuner=%u, type=%u, frequency=%u\n",
-				p->tuner, p->type, p->frequency);
-}
-
-static void v4l_print_standard(const void *arg, bool write_only)
-{
-	const struct v4l2_standard *p = arg;
-
-	pr_cont("index=%u, id=0x%Lx, name=%s, fps=%u/%u, "
-		"framelines=%u\n", p->index,
-		(unsigned long long)p->id, p->name,
-		p->frameperiod.numerator,
-		p->frameperiod.denominator,
-		p->framelines);
-}
-
-static void v4l_print_std(const void *arg, bool write_only)
-{
-	pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg);
-}
-
-static void v4l_print_hw_freq_seek(const void *arg, bool write_only)
-{
-	const struct v4l2_hw_freq_seek *p = arg;
-
-	pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u\n",
-		p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing);
-}
-
-static void v4l_print_requestbuffers(const void *arg, bool write_only)
-{
-	const struct v4l2_requestbuffers *p = arg;
-
-	pr_cont("count=%d, type=%s, memory=%s\n",
-		p->count,
-		prt_names(p->type, v4l2_type_names),
-		prt_names(p->memory, v4l2_memory_names));
-}
-
-static void v4l_print_buffer(const void *arg, bool write_only)
-{
-	const struct v4l2_buffer *p = arg;
-	const struct v4l2_timecode *tc = &p->timecode;
-	const struct v4l2_plane *plane;
-	int i;
-
-	pr_cont("%02ld:%02d:%02d.%08ld index=%d, type=%s, "
-		"flags=0x%08x, field=%s, sequence=%d, memory=%s",
-			p->timestamp.tv_sec / 3600,
-			(int)(p->timestamp.tv_sec / 60) % 60,
-			(int)(p->timestamp.tv_sec % 60),
-			(long)p->timestamp.tv_usec,
-			p->index,
-			prt_names(p->type, v4l2_type_names),
-			p->flags, prt_names(p->field, v4l2_field_names),
-			p->sequence, prt_names(p->memory, v4l2_memory_names));
-
-	if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) {
-		pr_cont("\n");
-		for (i = 0; i < p->length; ++i) {
-			plane = &p->m.planes[i];
-			printk(KERN_DEBUG
-				"plane %d: bytesused=%d, data_offset=0x%08x "
-				"offset/userptr=0x%lx, length=%d\n",
-				i, plane->bytesused, plane->data_offset,
-				plane->m.userptr, plane->length);
-		}
-	} else {
-		pr_cont("bytesused=%d, offset/userptr=0x%lx, length=%d\n",
-			p->bytesused, p->m.userptr, p->length);
-	}
-
-	printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, "
-		"flags=0x%08x, frames=%d, userbits=0x%08x\n",
-			tc->hours, tc->minutes, tc->seconds,
-			tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits);
-}
-
-static void v4l_print_create_buffers(const void *arg, bool write_only)
-{
-	const struct v4l2_create_buffers *p = arg;
-
-	pr_cont("index=%d, count=%d, memory=%s, ",
-			p->index, p->count,
-			prt_names(p->memory, v4l2_memory_names));
-	v4l_print_format(&p->format, write_only);
-}
-
-static void v4l_print_streamparm(const void *arg, bool write_only)
-{
-	const struct v4l2_streamparm *p = arg;
-
-	pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
-
-	if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
-	    p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
-		const struct v4l2_captureparm *c = &p->parm.capture;
-
-		pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, "
-			"extendedmode=%d, readbuffers=%d\n",
-			c->capability, c->capturemode,
-			c->timeperframe.numerator, c->timeperframe.denominator,
-			c->extendedmode, c->readbuffers);
-	} else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
-		   p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
-		const struct v4l2_outputparm *c = &p->parm.output;
-
-		pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, "
-			"extendedmode=%d, writebuffers=%d\n",
-			c->capability, c->outputmode,
-			c->timeperframe.numerator, c->timeperframe.denominator,
-			c->extendedmode, c->writebuffers);
-	}
-}
-
-static void v4l_print_queryctrl(const void *arg, bool write_only)
-{
-	const struct v4l2_queryctrl *p = arg;
-
-	pr_cont("id=0x%x, type=%d, name=%s, min/max=%d/%d, "
-		"step=%d, default=%d, flags=0x%08x\n",
-			p->id, p->type, p->name,
-			p->minimum, p->maximum,
-			p->step, p->default_value, p->flags);
-}
-
-static void v4l_print_querymenu(const void *arg, bool write_only)
-{
-	const struct v4l2_querymenu *p = arg;
-
-	pr_cont("id=0x%x, index=%d\n", p->id, p->index);
-}
-
-static void v4l_print_control(const void *arg, bool write_only)
-{
-	const struct v4l2_control *p = arg;
-
-	pr_cont("id=0x%x, value=%d\n", p->id, p->value);
-}
-
-static void v4l_print_ext_controls(const void *arg, bool write_only)
-{
-	const struct v4l2_ext_controls *p = arg;
-	int i;
-
-	pr_cont("class=0x%x, count=%d, error_idx=%d",
-			p->ctrl_class, p->count, p->error_idx);
-	for (i = 0; i < p->count; i++) {
-		if (p->controls[i].size)
-			pr_cont(", id/val=0x%x/0x%x",
-				p->controls[i].id, p->controls[i].value);
-		else
-			pr_cont(", id/size=0x%x/%u",
-				p->controls[i].id, p->controls[i].size);
-	}
-	pr_cont("\n");
-}
-
-static void v4l_print_cropcap(const void *arg, bool write_only)
-{
-	const struct v4l2_cropcap *p = arg;
-
-	pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, "
-		"defrect wxh=%dx%d, x,y=%d,%d\n, "
-		"pixelaspect %d/%d\n",
-		prt_names(p->type, v4l2_type_names),
-		p->bounds.width, p->bounds.height,
-		p->bounds.left, p->bounds.top,
-		p->defrect.width, p->defrect.height,
-		p->defrect.left, p->defrect.top,
-		p->pixelaspect.numerator, p->pixelaspect.denominator);
-}
-
-static void v4l_print_crop(const void *arg, bool write_only)
-{
-	const struct v4l2_crop *p = arg;
-
-	pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n",
-		prt_names(p->type, v4l2_type_names),
-		p->c.width, p->c.height,
-		p->c.left, p->c.top);
-}
-
-static void v4l_print_selection(const void *arg, bool write_only)
-{
-	const struct v4l2_selection *p = arg;
-
-	pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n",
-		prt_names(p->type, v4l2_type_names),
-		p->target, p->flags,
-		p->r.width, p->r.height, p->r.left, p->r.top);
-}
-
-static void v4l_print_jpegcompression(const void *arg, bool write_only)
-{
-	const struct v4l2_jpegcompression *p = arg;
-
-	pr_cont("quality=%d, APPn=%d, APP_len=%d, "
-		"COM_len=%d, jpeg_markers=0x%x\n",
-		p->quality, p->APPn, p->APP_len,
-		p->COM_len, p->jpeg_markers);
-}
-
-static void v4l_print_enc_idx(const void *arg, bool write_only)
-{
-	const struct v4l2_enc_idx *p = arg;
-
-	pr_cont("entries=%d, entries_cap=%d\n",
-			p->entries, p->entries_cap);
-}
-
-static void v4l_print_encoder_cmd(const void *arg, bool write_only)
-{
-	const struct v4l2_encoder_cmd *p = arg;
-
-	pr_cont("cmd=%d, flags=0x%x\n",
-			p->cmd, p->flags);
-}
-
-static void v4l_print_decoder_cmd(const void *arg, bool write_only)
-{
-	const struct v4l2_decoder_cmd *p = arg;
-
-	pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags);
-
-	if (p->cmd == V4L2_DEC_CMD_START)
-		pr_info("speed=%d, format=%u\n",
-				p->start.speed, p->start.format);
-	else if (p->cmd == V4L2_DEC_CMD_STOP)
-		pr_info("pts=%llu\n", p->stop.pts);
-}
-
-static void v4l_print_dbg_chip_ident(const void *arg, bool write_only)
-{
-	const struct v4l2_dbg_chip_ident *p = arg;
-
-	pr_cont("type=%u, ", p->match.type);
-	if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
-		pr_cont("name=%s, ", p->match.name);
-	else
-		pr_cont("addr=%u, ", p->match.addr);
-	pr_cont("chip_ident=%u, revision=0x%x\n",
-			p->ident, p->revision);
-}
-
-static void v4l_print_dbg_register(const void *arg, bool write_only)
-{
-	const struct v4l2_dbg_register *p = arg;
-
-	pr_cont("type=%u, ", p->match.type);
-	if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
-		pr_cont("name=%s, ", p->match.name);
-	else
-		pr_cont("addr=%u, ", p->match.addr);
-	pr_cont("reg=0x%llx, val=0x%llx\n",
-			p->reg, p->val);
-}
-
-static void v4l_print_dv_enum_presets(const void *arg, bool write_only)
-{
-	const struct v4l2_dv_enum_preset *p = arg;
-
-	pr_cont("index=%u, preset=%u, name=%s, width=%u, height=%u\n",
-			p->index, p->preset, p->name, p->width, p->height);
-}
-
-static void v4l_print_dv_preset(const void *arg, bool write_only)
-{
-	const struct v4l2_dv_preset *p = arg;
-
-	pr_cont("preset=%u\n", p->preset);
-}
-
-static void v4l_print_dv_timings(const void *arg, bool write_only)
-{
-	const struct v4l2_dv_timings *p = arg;
-
-	switch (p->type) {
-	case V4L2_DV_BT_656_1120:
-		pr_cont("type=bt-656/1120, interlaced=%u, "
-			"pixelclock=%llu, "
-			"width=%u, height=%u, polarities=0x%x, "
-			"hfrontporch=%u, hsync=%u, "
-			"hbackporch=%u, vfrontporch=%u, "
-			"vsync=%u, vbackporch=%u, "
-			"il_vfrontporch=%u, il_vsync=%u, "
-			"il_vbackporch=%u, standards=0x%x, flags=0x%x\n",
-				p->bt.interlaced, p->bt.pixelclock,
-				p->bt.width, p->bt.height,
-				p->bt.polarities, p->bt.hfrontporch,
-				p->bt.hsync, p->bt.hbackporch,
-				p->bt.vfrontporch, p->bt.vsync,
-				p->bt.vbackporch, p->bt.il_vfrontporch,
-				p->bt.il_vsync, p->bt.il_vbackporch,
-				p->bt.standards, p->bt.flags);
-		break;
-	default:
-		pr_cont("type=%d\n", p->type);
-		break;
-	}
-}
-
-static void v4l_print_enum_dv_timings(const void *arg, bool write_only)
-{
-	const struct v4l2_enum_dv_timings *p = arg;
-
-	pr_cont("index=%u, ", p->index);
-	v4l_print_dv_timings(&p->timings, write_only);
-}
-
-static void v4l_print_dv_timings_cap(const void *arg, bool write_only)
-{
-	const struct v4l2_dv_timings_cap *p = arg;
-
-	switch (p->type) {
-	case V4L2_DV_BT_656_1120:
-		pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, "
-			"pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n",
-			p->bt.min_width, p->bt.max_width,
-			p->bt.min_height, p->bt.max_height,
-			p->bt.min_pixelclock, p->bt.max_pixelclock,
-			p->bt.standards, p->bt.capabilities);
-		break;
-	default:
-		pr_cont("type=%u\n", p->type);
-		break;
-	}
-}
-
-static void v4l_print_frmsizeenum(const void *arg, bool write_only)
-{
-	const struct v4l2_frmsizeenum *p = arg;
-
-	pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u",
-			p->index,
-			(p->pixel_format & 0xff),
-			(p->pixel_format >>  8) & 0xff,
-			(p->pixel_format >> 16) & 0xff,
-			(p->pixel_format >> 24) & 0xff,
-			p->type);
-	switch (p->type) {
-	case V4L2_FRMSIZE_TYPE_DISCRETE:
-		pr_cont(" wxh=%ux%u\n",
-			p->discrete.width, p->discrete.height);
-		break;
-	case V4L2_FRMSIZE_TYPE_STEPWISE:
-		pr_cont(" min=%ux%u, max=%ux%u, step=%ux%u\n",
-				p->stepwise.min_width,  p->stepwise.min_height,
-				p->stepwise.step_width, p->stepwise.step_height,
-				p->stepwise.max_width,  p->stepwise.max_height);
-		break;
-	case V4L2_FRMSIZE_TYPE_CONTINUOUS:
-		/* fall through */
-	default:
-		pr_cont("\n");
-		break;
-	}
-}
-
-static void v4l_print_frmivalenum(const void *arg, bool write_only)
-{
-	const struct v4l2_frmivalenum *p = arg;
-
-	pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u",
-			p->index,
-			(p->pixel_format & 0xff),
-			(p->pixel_format >>  8) & 0xff,
-			(p->pixel_format >> 16) & 0xff,
-			(p->pixel_format >> 24) & 0xff,
-			p->width, p->height, p->type);
-	switch (p->type) {
-	case V4L2_FRMIVAL_TYPE_DISCRETE:
-		pr_cont(" fps=%d/%d\n",
-				p->discrete.numerator,
-				p->discrete.denominator);
-		break;
-	case V4L2_FRMIVAL_TYPE_STEPWISE:
-		pr_cont(" min=%d/%d, max=%d/%d, step=%d/%d\n",
-				p->stepwise.min.numerator,
-				p->stepwise.min.denominator,
-				p->stepwise.max.numerator,
-				p->stepwise.max.denominator,
-				p->stepwise.step.numerator,
-				p->stepwise.step.denominator);
-		break;
-	case V4L2_FRMIVAL_TYPE_CONTINUOUS:
-		/* fall through */
-	default:
-		pr_cont("\n");
-		break;
-	}
-}
-
-static void v4l_print_event(const void *arg, bool write_only)
-{
-	const struct v4l2_event *p = arg;
-	const struct v4l2_event_ctrl *c;
-
-	pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, "
-		"timestamp=%lu.%9.9lu\n",
-			p->type, p->pending, p->sequence, p->id,
-			p->timestamp.tv_sec, p->timestamp.tv_nsec);
-	switch (p->type) {
-	case V4L2_EVENT_VSYNC:
-		printk(KERN_DEBUG "field=%s\n",
-			prt_names(p->u.vsync.field, v4l2_field_names));
-		break;
-	case V4L2_EVENT_CTRL:
-		c = &p->u.ctrl;
-		printk(KERN_DEBUG "changes=0x%x, type=%u, ",
-			c->changes, c->type);
-		if (c->type == V4L2_CTRL_TYPE_INTEGER64)
-			pr_cont("value64=%lld, ", c->value64);
-		else
-			pr_cont("value=%d, ", c->value);
-		pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d,"
-				" default_value=%d\n",
-			c->flags, c->minimum, c->maximum,
-			c->step, c->default_value);
-		break;
-	case V4L2_EVENT_FRAME_SYNC:
-		pr_cont("frame_sequence=%u\n",
-			p->u.frame_sync.frame_sequence);
-		break;
-	}
-}
-
-static void v4l_print_event_subscription(const void *arg, bool write_only)
-{
-	const struct v4l2_event_subscription *p = arg;
-
-	pr_cont("type=0x%x, id=0x%x, flags=0x%x\n",
-			p->type, p->id, p->flags);
-}
-
-static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only)
-{
-	const struct v4l2_sliced_vbi_cap *p = arg;
-	int i;
-
-	pr_cont("type=%s, service_set=0x%08x\n",
-			prt_names(p->type, v4l2_type_names), p->service_set);
-	for (i = 0; i < 24; i++)
-		printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
-				p->service_lines[0][i],
-				p->service_lines[1][i]);
-}
-
-static void v4l_print_freq_band(const void *arg, bool write_only)
-{
-	const struct v4l2_frequency_band *p = arg;
-
-	pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, "
-			"rangelow=%u, rangehigh=%u, modulation=0x%x\n",
-			p->tuner, p->type, p->index,
-			p->capability, p->rangelow,
-			p->rangehigh, p->modulation);
-}
-
-static void v4l_print_u32(const void *arg, bool write_only)
-{
-	pr_cont("value=%u\n", *(const u32 *)arg);
-}
-
-static void v4l_print_newline(const void *arg, bool write_only)
-{
-	pr_cont("\n");
-}
-
-static void v4l_print_default(const void *arg, bool write_only)
-{
-	pr_cont("driver-specific ioctl\n");
-}
-
-static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv)
-{
-	__u32 i;
-
-	/* zero the reserved fields */
-	c->reserved[0] = c->reserved[1] = 0;
-	for (i = 0; i < c->count; i++)
-		c->controls[i].reserved2[0] = 0;
-
-	/* V4L2_CID_PRIVATE_BASE cannot be used as control class
-	   when using extended controls.
-	   Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
-	   is it allowed for backwards compatibility.
-	 */
-	if (!allow_priv && c->ctrl_class == V4L2_CID_PRIVATE_BASE)
-		return 0;
-	/* Check that all controls are from the same control class. */
-	for (i = 0; i < c->count; i++) {
-		if (V4L2_CTRL_ID2CLASS(c->controls[i].id) != c->ctrl_class) {
-			c->error_idx = i;
-			return 0;
-		}
-	}
-	return 1;
-}
-
-static int check_fmt(const struct v4l2_ioctl_ops *ops, enum v4l2_buf_type type)
-{
-	if (ops == NULL)
-		return -EINVAL;
-
-	switch (type) {
-	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
-		if (ops->vidioc_g_fmt_vid_cap ||
-				ops->vidioc_g_fmt_vid_cap_mplane)
-			return 0;
-		break;
-	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
-		if (ops->vidioc_g_fmt_vid_cap_mplane)
-			return 0;
-		break;
-	case V4L2_BUF_TYPE_VIDEO_OVERLAY:
-		if (ops->vidioc_g_fmt_vid_overlay)
-			return 0;
-		break;
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT:
-		if (ops->vidioc_g_fmt_vid_out ||
-				ops->vidioc_g_fmt_vid_out_mplane)
-			return 0;
-		break;
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
-		if (ops->vidioc_g_fmt_vid_out_mplane)
-			return 0;
-		break;
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
-		if (ops->vidioc_g_fmt_vid_out_overlay)
-			return 0;
-		break;
-	case V4L2_BUF_TYPE_VBI_CAPTURE:
-		if (ops->vidioc_g_fmt_vbi_cap)
-			return 0;
-		break;
-	case V4L2_BUF_TYPE_VBI_OUTPUT:
-		if (ops->vidioc_g_fmt_vbi_out)
-			return 0;
-		break;
-	case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
-		if (ops->vidioc_g_fmt_sliced_vbi_cap)
-			return 0;
-		break;
-	case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
-		if (ops->vidioc_g_fmt_sliced_vbi_out)
-			return 0;
-		break;
-	case V4L2_BUF_TYPE_PRIVATE:
-		if (ops->vidioc_g_fmt_type_private)
-			return 0;
-		break;
-	}
-	return -EINVAL;
-}
-
-static int v4l_querycap(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct v4l2_capability *cap = (struct v4l2_capability *)arg;
-
-	cap->version = LINUX_VERSION_CODE;
-	return ops->vidioc_querycap(file, fh, cap);
-}
-
-static int v4l_s_input(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	return ops->vidioc_s_input(file, fh, *(unsigned int *)arg);
-}
-
-static int v4l_s_output(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	return ops->vidioc_s_output(file, fh, *(unsigned int *)arg);
-}
-
-static int v4l_g_priority(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct video_device *vfd;
-	u32 *p = arg;
-
-	if (ops->vidioc_g_priority)
-		return ops->vidioc_g_priority(file, fh, arg);
-	vfd = video_devdata(file);
-	*p = v4l2_prio_max(&vfd->v4l2_dev->prio);
-	return 0;
-}
-
-static int v4l_s_priority(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct video_device *vfd;
-	struct v4l2_fh *vfh;
-	u32 *p = arg;
-
-	if (ops->vidioc_s_priority)
-		return ops->vidioc_s_priority(file, fh, *p);
-	vfd = video_devdata(file);
-	vfh = file->private_data;
-	return v4l2_prio_change(&vfd->v4l2_dev->prio, &vfh->prio, *p);
-}
-
-static int v4l_enuminput(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct v4l2_input *p = arg;
-
-	/*
-	 * We set the flags for CAP_PRESETS, CAP_CUSTOM_TIMINGS &
-	 * CAP_STD here based on ioctl handler provided by the
-	 * driver. If the driver doesn't support these
-	 * for a specific input, it must override these flags.
-	 */
-	if (ops->vidioc_s_std)
-		p->capabilities |= V4L2_IN_CAP_STD;
-	if (ops->vidioc_s_dv_preset)
-		p->capabilities |= V4L2_IN_CAP_PRESETS;
-	if (ops->vidioc_s_dv_timings)
-		p->capabilities |= V4L2_IN_CAP_CUSTOM_TIMINGS;
-
-	return ops->vidioc_enum_input(file, fh, p);
-}
-
-static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct v4l2_output *p = arg;
-
-	/*
-	 * We set the flags for CAP_PRESETS, CAP_CUSTOM_TIMINGS &
-	 * CAP_STD here based on ioctl handler provided by the
-	 * driver. If the driver doesn't support these
-	 * for a specific output, it must override these flags.
-	 */
-	if (ops->vidioc_s_std)
-		p->capabilities |= V4L2_OUT_CAP_STD;
-	if (ops->vidioc_s_dv_preset)
-		p->capabilities |= V4L2_OUT_CAP_PRESETS;
-	if (ops->vidioc_s_dv_timings)
-		p->capabilities |= V4L2_OUT_CAP_CUSTOM_TIMINGS;
-
-	return ops->vidioc_enum_output(file, fh, p);
-}
-
-static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct v4l2_fmtdesc *p = arg;
-
-	switch (p->type) {
-	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
-		if (unlikely(!ops->vidioc_enum_fmt_vid_cap))
-			break;
-		return ops->vidioc_enum_fmt_vid_cap(file, fh, arg);
-	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
-		if (unlikely(!ops->vidioc_enum_fmt_vid_cap_mplane))
-			break;
-		return ops->vidioc_enum_fmt_vid_cap_mplane(file, fh, arg);
-	case V4L2_BUF_TYPE_VIDEO_OVERLAY:
-		if (unlikely(!ops->vidioc_enum_fmt_vid_overlay))
-			break;
-		return ops->vidioc_enum_fmt_vid_overlay(file, fh, arg);
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT:
-		if (unlikely(!ops->vidioc_enum_fmt_vid_out))
-			break;
-		return ops->vidioc_enum_fmt_vid_out(file, fh, arg);
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
-		if (unlikely(!ops->vidioc_enum_fmt_vid_out_mplane))
-			break;
-		return ops->vidioc_enum_fmt_vid_out_mplane(file, fh, arg);
-	case V4L2_BUF_TYPE_PRIVATE:
-		if (unlikely(!ops->vidioc_enum_fmt_type_private))
-			break;
-		return ops->vidioc_enum_fmt_type_private(file, fh, arg);
-	}
-	return -EINVAL;
-}
-
-static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct v4l2_format *p = arg;
-
-	switch (p->type) {
-	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
-		if (unlikely(!ops->vidioc_g_fmt_vid_cap))
-			break;
-		return ops->vidioc_g_fmt_vid_cap(file, fh, arg);
-	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
-		if (unlikely(!ops->vidioc_g_fmt_vid_cap_mplane))
-			break;
-		return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
-	case V4L2_BUF_TYPE_VIDEO_OVERLAY:
-		if (unlikely(!ops->vidioc_g_fmt_vid_overlay))
-			break;
-		return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT:
-		if (unlikely(!ops->vidioc_g_fmt_vid_out))
-			break;
-		return ops->vidioc_g_fmt_vid_out(file, fh, arg);
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
-		if (unlikely(!ops->vidioc_g_fmt_vid_out_mplane))
-			break;
-		return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
-		if (unlikely(!ops->vidioc_g_fmt_vid_out_overlay))
-			break;
-		return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);
-	case V4L2_BUF_TYPE_VBI_CAPTURE:
-		if (unlikely(!ops->vidioc_g_fmt_vbi_cap))
-			break;
-		return ops->vidioc_g_fmt_vbi_cap(file, fh, arg);
-	case V4L2_BUF_TYPE_VBI_OUTPUT:
-		if (unlikely(!ops->vidioc_g_fmt_vbi_out))
-			break;
-		return ops->vidioc_g_fmt_vbi_out(file, fh, arg);
-	case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
-		if (unlikely(!ops->vidioc_g_fmt_sliced_vbi_cap))
-			break;
-		return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg);
-	case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
-		if (unlikely(!ops->vidioc_g_fmt_sliced_vbi_out))
-			break;
-		return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg);
-	case V4L2_BUF_TYPE_PRIVATE:
-		if (unlikely(!ops->vidioc_g_fmt_type_private))
-			break;
-		return ops->vidioc_g_fmt_type_private(file, fh, arg);
-	}
-	return -EINVAL;
-}
-
-static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct v4l2_format *p = arg;
-
-	switch (p->type) {
-	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
-		if (unlikely(!ops->vidioc_s_fmt_vid_cap))
-			break;
-		CLEAR_AFTER_FIELD(p, fmt.pix);
-		return ops->vidioc_s_fmt_vid_cap(file, fh, arg);
-	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
-		if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane))
-			break;
-		CLEAR_AFTER_FIELD(p, fmt.pix_mp);
-		return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
-	case V4L2_BUF_TYPE_VIDEO_OVERLAY:
-		if (unlikely(!ops->vidioc_s_fmt_vid_overlay))
-			break;
-		CLEAR_AFTER_FIELD(p, fmt.win);
-		return ops->vidioc_s_fmt_vid_overlay(file, fh, arg);
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT:
-		if (unlikely(!ops->vidioc_s_fmt_vid_out))
-			break;
-		CLEAR_AFTER_FIELD(p, fmt.pix);
-		return ops->vidioc_s_fmt_vid_out(file, fh, arg);
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
-		if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane))
-			break;
-		CLEAR_AFTER_FIELD(p, fmt.pix_mp);
-		return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
-		if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay))
-			break;
-		CLEAR_AFTER_FIELD(p, fmt.win);
-		return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg);
-	case V4L2_BUF_TYPE_VBI_CAPTURE:
-		if (unlikely(!ops->vidioc_s_fmt_vbi_cap))
-			break;
-		CLEAR_AFTER_FIELD(p, fmt.vbi);
-		return ops->vidioc_s_fmt_vbi_cap(file, fh, arg);
-	case V4L2_BUF_TYPE_VBI_OUTPUT:
-		if (unlikely(!ops->vidioc_s_fmt_vbi_out))
-			break;
-		CLEAR_AFTER_FIELD(p, fmt.vbi);
-		return ops->vidioc_s_fmt_vbi_out(file, fh, arg);
-	case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
-		if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap))
-			break;
-		CLEAR_AFTER_FIELD(p, fmt.sliced);
-		return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg);
-	case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
-		if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out))
-			break;
-		CLEAR_AFTER_FIELD(p, fmt.sliced);
-		return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg);
-	case V4L2_BUF_TYPE_PRIVATE:
-		if (unlikely(!ops->vidioc_s_fmt_type_private))
-			break;
-		return ops->vidioc_s_fmt_type_private(file, fh, arg);
-	}
-	return -EINVAL;
-}
-
-static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct v4l2_format *p = arg;
-
-	switch (p->type) {
-	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
-		if (unlikely(!ops->vidioc_try_fmt_vid_cap))
-			break;
-		CLEAR_AFTER_FIELD(p, fmt.pix);
-		return ops->vidioc_try_fmt_vid_cap(file, fh, arg);
-	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
-		if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane))
-			break;
-		CLEAR_AFTER_FIELD(p, fmt.pix_mp);
-		return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
-	case V4L2_BUF_TYPE_VIDEO_OVERLAY:
-		if (unlikely(!ops->vidioc_try_fmt_vid_overlay))
-			break;
-		CLEAR_AFTER_FIELD(p, fmt.win);
-		return ops->vidioc_try_fmt_vid_overlay(file, fh, arg);
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT:
-		if (unlikely(!ops->vidioc_try_fmt_vid_out))
-			break;
-		CLEAR_AFTER_FIELD(p, fmt.pix);
-		return ops->vidioc_try_fmt_vid_out(file, fh, arg);
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
-		if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane))
-			break;
-		CLEAR_AFTER_FIELD(p, fmt.pix_mp);
-		return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
-		if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay))
-			break;
-		CLEAR_AFTER_FIELD(p, fmt.win);
-		return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg);
-	case V4L2_BUF_TYPE_VBI_CAPTURE:
-		if (unlikely(!ops->vidioc_try_fmt_vbi_cap))
-			break;
-		CLEAR_AFTER_FIELD(p, fmt.vbi);
-		return ops->vidioc_try_fmt_vbi_cap(file, fh, arg);
-	case V4L2_BUF_TYPE_VBI_OUTPUT:
-		if (unlikely(!ops->vidioc_try_fmt_vbi_out))
-			break;
-		CLEAR_AFTER_FIELD(p, fmt.vbi);
-		return ops->vidioc_try_fmt_vbi_out(file, fh, arg);
-	case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
-		if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap))
-			break;
-		CLEAR_AFTER_FIELD(p, fmt.sliced);
-		return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg);
-	case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
-		if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out))
-			break;
-		CLEAR_AFTER_FIELD(p, fmt.sliced);
-		return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg);
-	case V4L2_BUF_TYPE_PRIVATE:
-		if (unlikely(!ops->vidioc_try_fmt_type_private))
-			break;
-		return ops->vidioc_try_fmt_type_private(file, fh, arg);
-	}
-	return -EINVAL;
-}
-
-static int v4l_streamon(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	return ops->vidioc_streamon(file, fh, *(unsigned int *)arg);
-}
-
-static int v4l_streamoff(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg);
-}
-
-static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct video_device *vfd = video_devdata(file);
-	struct v4l2_tuner *p = arg;
-	int err;
-
-	p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
-			V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
-	err = ops->vidioc_g_tuner(file, fh, p);
-	if (!err)
-		p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
-	return err;
-}
-
-static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct video_device *vfd = video_devdata(file);
-	struct v4l2_tuner *p = arg;
-
-	p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
-			V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
-	return ops->vidioc_s_tuner(file, fh, p);
-}
-
-static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct v4l2_modulator *p = arg;
-	int err;
-
-	err = ops->vidioc_g_modulator(file, fh, p);
-	if (!err)
-		p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
-	return err;
-}
-
-static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct video_device *vfd = video_devdata(file);
-	struct v4l2_frequency *p = arg;
-
-	p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
-			V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
-	return ops->vidioc_g_frequency(file, fh, p);
-}
-
-static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct video_device *vfd = video_devdata(file);
-	struct v4l2_frequency *p = arg;
-	enum v4l2_tuner_type type;
-
-	type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
-			V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
-	if (p->type != type)
-		return -EINVAL;
-	return ops->vidioc_s_frequency(file, fh, p);
-}
-
-static int v4l_enumstd(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct video_device *vfd = video_devdata(file);
-	struct v4l2_standard *p = arg;
-	v4l2_std_id id = vfd->tvnorms, curr_id = 0;
-	unsigned int index = p->index, i, j = 0;
-	const char *descr = "";
-
-	/* Return norm array in a canonical way */
-	for (i = 0; i <= index && id; i++) {
-		/* last std value in the standards array is 0, so this
-		   while always ends there since (id & 0) == 0. */
-		while ((id & standards[j].std) != standards[j].std)
-			j++;
-		curr_id = standards[j].std;
-		descr = standards[j].descr;
-		j++;
-		if (curr_id == 0)
-			break;
-		if (curr_id != V4L2_STD_PAL &&
-				curr_id != V4L2_STD_SECAM &&
-				curr_id != V4L2_STD_NTSC)
-			id &= ~curr_id;
-	}
-	if (i <= index)
-		return -EINVAL;
-
-	v4l2_video_std_construct(p, curr_id, descr);
-	return 0;
-}
-
-static int v4l_g_std(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct video_device *vfd = video_devdata(file);
-	v4l2_std_id *id = arg;
-
-	/* Calls the specific handler */
-	if (ops->vidioc_g_std)
-		return ops->vidioc_g_std(file, fh, arg);
-	if (vfd->current_norm) {
-		*id = vfd->current_norm;
-		return 0;
-	}
-	return -ENOTTY;
-}
-
-static int v4l_s_std(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct video_device *vfd = video_devdata(file);
-	v4l2_std_id *id = arg, norm;
-	int ret;
-
-	norm = (*id) & vfd->tvnorms;
-	if (vfd->tvnorms && !norm)	/* Check if std is supported */
-		return -EINVAL;
-
-	/* Calls the specific handler */
-	ret = ops->vidioc_s_std(file, fh, &norm);
-
-	/* Updates standard information */
-	if (ret >= 0)
-		vfd->current_norm = norm;
-	return ret;
-}
-
-static int v4l_querystd(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct video_device *vfd = video_devdata(file);
-	v4l2_std_id *p = arg;
-
-	/*
-	 * If nothing detected, it should return all supported
-	 * standard.
-	 * Drivers just need to mask the std argument, in order
-	 * to remove the standards that don't apply from the mask.
-	 * This means that tuners, audio and video decoders can join
-	 * their efforts to improve the standards detection.
-	 */
-	*p = vfd->tvnorms;
-	return ops->vidioc_querystd(file, fh, arg);
-}
-
-static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct video_device *vfd = video_devdata(file);
-	struct v4l2_hw_freq_seek *p = arg;
-	enum v4l2_tuner_type type;
-
-	type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
-		V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
-	if (p->type != type)
-		return -EINVAL;
-	return ops->vidioc_s_hw_freq_seek(file, fh, p);
-}
-
-static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct v4l2_requestbuffers *p = arg;
-	int ret = check_fmt(ops, p->type);
-
-	if (ret)
-		return ret;
-
-	if (p->type < V4L2_BUF_TYPE_PRIVATE)
-		CLEAR_AFTER_FIELD(p, memory);
-
-	return ops->vidioc_reqbufs(file, fh, p);
-}
-
-static int v4l_querybuf(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct v4l2_buffer *p = arg;
-	int ret = check_fmt(ops, p->type);
-
-	return ret ? ret : ops->vidioc_querybuf(file, fh, p);
-}
-
-static int v4l_qbuf(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct v4l2_buffer *p = arg;
-	int ret = check_fmt(ops, p->type);
-
-	return ret ? ret : ops->vidioc_qbuf(file, fh, p);
-}
-
-static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct v4l2_buffer *p = arg;
-	int ret = check_fmt(ops, p->type);
-
-	return ret ? ret : ops->vidioc_dqbuf(file, fh, p);
-}
-
-static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct v4l2_create_buffers *create = arg;
-	int ret = check_fmt(ops, create->format.type);
-
-	return ret ? ret : ops->vidioc_create_bufs(file, fh, create);
-}
-
-static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct v4l2_buffer *b = arg;
-	int ret = check_fmt(ops, b->type);
-
-	return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
-}
-
-static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct video_device *vfd = video_devdata(file);
-	struct v4l2_streamparm *p = arg;
-	v4l2_std_id std;
-	int ret = check_fmt(ops, p->type);
-
-	if (ret)
-		return ret;
-	if (ops->vidioc_g_parm)
-		return ops->vidioc_g_parm(file, fh, p);
-	std = vfd->current_norm;
-	if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
-	    p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
-		return -EINVAL;
-	p->parm.capture.readbuffers = 2;
-	if (ops->vidioc_g_std)
-		ret = ops->vidioc_g_std(file, fh, &std);
-	if (ret == 0)
-		v4l2_video_std_frame_period(std,
-			    &p->parm.capture.timeperframe);
-	return ret;
-}
-
-static int v4l_s_parm(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct v4l2_streamparm *p = arg;
-	int ret = check_fmt(ops, p->type);
-
-	return ret ? ret : ops->vidioc_s_parm(file, fh, p);
-}
-
-static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct video_device *vfd = video_devdata(file);
-	struct v4l2_queryctrl *p = arg;
-	struct v4l2_fh *vfh =
-		test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
-
-	if (vfh && vfh->ctrl_handler)
-		return v4l2_queryctrl(vfh->ctrl_handler, p);
-	if (vfd->ctrl_handler)
-		return v4l2_queryctrl(vfd->ctrl_handler, p);
-	if (ops->vidioc_queryctrl)
-		return ops->vidioc_queryctrl(file, fh, p);
-	return -ENOTTY;
-}
-
-static int v4l_querymenu(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct video_device *vfd = video_devdata(file);
-	struct v4l2_querymenu *p = arg;
-	struct v4l2_fh *vfh =
-		test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
-
-	if (vfh && vfh->ctrl_handler)
-		return v4l2_querymenu(vfh->ctrl_handler, p);
-	if (vfd->ctrl_handler)
-		return v4l2_querymenu(vfd->ctrl_handler, p);
-	if (ops->vidioc_querymenu)
-		return ops->vidioc_querymenu(file, fh, p);
-	return -ENOTTY;
-}
-
-static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct video_device *vfd = video_devdata(file);
-	struct v4l2_control *p = arg;
-	struct v4l2_fh *vfh =
-		test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
-	struct v4l2_ext_controls ctrls;
-	struct v4l2_ext_control ctrl;
-
-	if (vfh && vfh->ctrl_handler)
-		return v4l2_g_ctrl(vfh->ctrl_handler, p);
-	if (vfd->ctrl_handler)
-		return v4l2_g_ctrl(vfd->ctrl_handler, p);
-	if (ops->vidioc_g_ctrl)
-		return ops->vidioc_g_ctrl(file, fh, p);
-	if (ops->vidioc_g_ext_ctrls == NULL)
-		return -ENOTTY;
-
-	ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
-	ctrls.count = 1;
-	ctrls.controls = &ctrl;
-	ctrl.id = p->id;
-	ctrl.value = p->value;
-	if (check_ext_ctrls(&ctrls, 1)) {
-		int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
-
-		if (ret == 0)
-			p->value = ctrl.value;
-		return ret;
-	}
-	return -EINVAL;
-}
-
-static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct video_device *vfd = video_devdata(file);
-	struct v4l2_control *p = arg;
-	struct v4l2_fh *vfh =
-		test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
-	struct v4l2_ext_controls ctrls;
-	struct v4l2_ext_control ctrl;
-
-	if (vfh && vfh->ctrl_handler)
-		return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p);
-	if (vfd->ctrl_handler)
-		return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p);
-	if (ops->vidioc_s_ctrl)
-		return ops->vidioc_s_ctrl(file, fh, p);
-	if (ops->vidioc_s_ext_ctrls == NULL)
-		return -ENOTTY;
-
-	ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
-	ctrls.count = 1;
-	ctrls.controls = &ctrl;
-	ctrl.id = p->id;
-	ctrl.value = p->value;
-	if (check_ext_ctrls(&ctrls, 1))
-		return ops->vidioc_s_ext_ctrls(file, fh, &ctrls);
-	return -EINVAL;
-}
-
-static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct video_device *vfd = video_devdata(file);
-	struct v4l2_ext_controls *p = arg;
-	struct v4l2_fh *vfh =
-		test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
-
-	p->error_idx = p->count;
-	if (vfh && vfh->ctrl_handler)
-		return v4l2_g_ext_ctrls(vfh->ctrl_handler, p);
-	if (vfd->ctrl_handler)
-		return v4l2_g_ext_ctrls(vfd->ctrl_handler, p);
-	if (ops->vidioc_g_ext_ctrls == NULL)
-		return -ENOTTY;
-	return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) :
-					-EINVAL;
-}
-
-static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct video_device *vfd = video_devdata(file);
-	struct v4l2_ext_controls *p = arg;
-	struct v4l2_fh *vfh =
-		test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
-
-	p->error_idx = p->count;
-	if (vfh && vfh->ctrl_handler)
-		return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, p);
-	if (vfd->ctrl_handler)
-		return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, p);
-	if (ops->vidioc_s_ext_ctrls == NULL)
-		return -ENOTTY;
-	return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) :
-					-EINVAL;
-}
-
-static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct video_device *vfd = video_devdata(file);
-	struct v4l2_ext_controls *p = arg;
-	struct v4l2_fh *vfh =
-		test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
-
-	p->error_idx = p->count;
-	if (vfh && vfh->ctrl_handler)
-		return v4l2_try_ext_ctrls(vfh->ctrl_handler, p);
-	if (vfd->ctrl_handler)
-		return v4l2_try_ext_ctrls(vfd->ctrl_handler, p);
-	if (ops->vidioc_try_ext_ctrls == NULL)
-		return -ENOTTY;
-	return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) :
-					-EINVAL;
-}
-
-static int v4l_g_crop(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct v4l2_crop *p = arg;
-	struct v4l2_selection s = {
-		.type = p->type,
-	};
-	int ret;
-
-	if (ops->vidioc_g_crop)
-		return ops->vidioc_g_crop(file, fh, p);
-	/* simulate capture crop using selection api */
-
-	/* crop means compose for output devices */
-	if (V4L2_TYPE_IS_OUTPUT(p->type))
-		s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
-	else
-		s.target = V4L2_SEL_TGT_CROP_ACTIVE;
-
-	ret = ops->vidioc_g_selection(file, fh, &s);
-
-	/* copying results to old structure on success */
-	if (!ret)
-		p->c = s.r;
-	return ret;
-}
-
-static int v4l_s_crop(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct v4l2_crop *p = arg;
-	struct v4l2_selection s = {
-		.type = p->type,
-		.r = p->c,
-	};
-
-	if (ops->vidioc_s_crop)
-		return ops->vidioc_s_crop(file, fh, p);
-	/* simulate capture crop using selection api */
-
-	/* crop means compose for output devices */
-	if (V4L2_TYPE_IS_OUTPUT(p->type))
-		s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
-	else
-		s.target = V4L2_SEL_TGT_CROP_ACTIVE;
-
-	return ops->vidioc_s_selection(file, fh, &s);
-}
-
-static int v4l_cropcap(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct v4l2_cropcap *p = arg;
-	struct v4l2_selection s = { .type = p->type };
-	int ret;
-
-	if (ops->vidioc_cropcap)
-		return ops->vidioc_cropcap(file, fh, p);
-
-	/* obtaining bounds */
-	if (V4L2_TYPE_IS_OUTPUT(p->type))
-		s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
-	else
-		s.target = V4L2_SEL_TGT_CROP_BOUNDS;
-
-	ret = ops->vidioc_g_selection(file, fh, &s);
-	if (ret)
-		return ret;
-	p->bounds = s.r;
-
-	/* obtaining defrect */
-	if (V4L2_TYPE_IS_OUTPUT(p->type))
-		s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
-	else
-		s.target = V4L2_SEL_TGT_CROP_DEFAULT;
-
-	ret = ops->vidioc_g_selection(file, fh, &s);
-	if (ret)
-		return ret;
-	p->defrect = s.r;
-
-	/* setting trivial pixelaspect */
-	p->pixelaspect.numerator = 1;
-	p->pixelaspect.denominator = 1;
-	return 0;
-}
-
-static int v4l_log_status(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct video_device *vfd = video_devdata(file);
-	int ret;
-
-	if (vfd->v4l2_dev)
-		pr_info("%s: =================  START STATUS  =================\n",
-			vfd->v4l2_dev->name);
-	ret = ops->vidioc_log_status(file, fh);
-	if (vfd->v4l2_dev)
-		pr_info("%s: ==================  END STATUS  ==================\n",
-			vfd->v4l2_dev->name);
-	return ret;
-}
-
-static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-#ifdef CONFIG_VIDEO_ADV_DEBUG
-	struct v4l2_dbg_register *p = arg;
-
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
-	return ops->vidioc_g_register(file, fh, p);
-#else
-	return -ENOTTY;
-#endif
-}
-
-static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-#ifdef CONFIG_VIDEO_ADV_DEBUG
-	struct v4l2_dbg_register *p = arg;
-
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
-	return ops->vidioc_s_register(file, fh, p);
-#else
-	return -ENOTTY;
-#endif
-}
-
-static int v4l_dbg_g_chip_ident(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct v4l2_dbg_chip_ident *p = arg;
-
-	p->ident = V4L2_IDENT_NONE;
-	p->revision = 0;
-	return ops->vidioc_g_chip_ident(file, fh, p);
-}
-
-static int v4l_dqevent(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK);
-}
-
-static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	return ops->vidioc_subscribe_event(fh, arg);
-}
-
-static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	return ops->vidioc_unsubscribe_event(fh, arg);
-}
-
-static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct v4l2_sliced_vbi_cap *p = arg;
-
-	/* Clear up to type, everything after type is zeroed already */
-	memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
-
-	return ops->vidioc_g_sliced_vbi_cap(file, fh, p);
-}
-
-static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *arg)
-{
-	struct video_device *vfd = video_devdata(file);
-	struct v4l2_frequency_band *p = arg;
-	enum v4l2_tuner_type type;
-	int err;
-
-	type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
-			V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
-
-	if (type != p->type)
-		return -EINVAL;
-	if (ops->vidioc_enum_freq_bands)
-		return ops->vidioc_enum_freq_bands(file, fh, p);
-	if (ops->vidioc_g_tuner) {
-		struct v4l2_tuner t = {
-			.index = p->tuner,
-			.type = type,
-		};
-
-		err = ops->vidioc_g_tuner(file, fh, &t);
-		if (err)
-			return err;
-		p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS;
-		p->rangelow = t.rangelow;
-		p->rangehigh = t.rangehigh;
-		p->modulation = (type == V4L2_TUNER_RADIO) ?
-			V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
-		return 0;
-	}
-	if (ops->vidioc_g_modulator) {
-		struct v4l2_modulator m = {
-			.index = p->tuner,
-		};
-
-		if (type != V4L2_TUNER_RADIO)
-			return -EINVAL;
-		err = ops->vidioc_g_modulator(file, fh, &m);
-		if (err)
-			return err;
-		p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS;
-		p->rangelow = m.rangelow;
-		p->rangehigh = m.rangehigh;
-		p->modulation = (type == V4L2_TUNER_RADIO) ?
-			V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
-		return 0;
-	}
-	return -ENOTTY;
-}
-
-struct v4l2_ioctl_info {
-	unsigned int ioctl;
-	u32 flags;
-	const char * const name;
-	union {
-		u32 offset;
-		int (*func)(const struct v4l2_ioctl_ops *ops,
-				struct file *file, void *fh, void *p);
-	} u;
-	void (*debug)(const void *arg, bool write_only);
-};
-
-/* This control needs a priority check */
-#define INFO_FL_PRIO	(1 << 0)
-/* This control can be valid if the filehandle passes a control handler. */
-#define INFO_FL_CTRL	(1 << 1)
-/* This is a standard ioctl, no need for special code */
-#define INFO_FL_STD	(1 << 2)
-/* This is ioctl has its own function */
-#define INFO_FL_FUNC	(1 << 3)
-/* Queuing ioctl */
-#define INFO_FL_QUEUE	(1 << 4)
-/* Zero struct from after the field to the end */
-#define INFO_FL_CLEAR(v4l2_struct, field)			\
-	((offsetof(struct v4l2_struct, field) +			\
-	  sizeof(((struct v4l2_struct *)0)->field)) << 16)
-#define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16)
-
-#define IOCTL_INFO_STD(_ioctl, _vidioc, _debug, _flags)			\
-	[_IOC_NR(_ioctl)] = {						\
-		.ioctl = _ioctl,					\
-		.flags = _flags | INFO_FL_STD,				\
-		.name = #_ioctl,					\
-		.u.offset = offsetof(struct v4l2_ioctl_ops, _vidioc),	\
-		.debug = _debug,					\
-	}
-
-#define IOCTL_INFO_FNC(_ioctl, _func, _debug, _flags)			\
-	[_IOC_NR(_ioctl)] = {						\
-		.ioctl = _ioctl,					\
-		.flags = _flags | INFO_FL_FUNC,				\
-		.name = #_ioctl,					\
-		.u.func = _func,					\
-		.debug = _debug,					\
-	}
-
-static struct v4l2_ioctl_info v4l2_ioctls[] = {
-	IOCTL_INFO_FNC(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),
-	IOCTL_INFO_FNC(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, INFO_FL_CLEAR(v4l2_fmtdesc, type)),
-	IOCTL_INFO_FNC(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, INFO_FL_CLEAR(v4l2_format, type)),
-	IOCTL_INFO_FNC(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
-	IOCTL_INFO_FNC(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE),
-	IOCTL_INFO_FNC(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)),
-	IOCTL_INFO_STD(VIDIOC_G_FBUF, vidioc_g_fbuf, v4l_print_framebuffer, 0),
-	IOCTL_INFO_STD(VIDIOC_S_FBUF, vidioc_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO),
-	IOCTL_INFO_STD(VIDIOC_OVERLAY, vidioc_overlay, v4l_print_u32, INFO_FL_PRIO),
-	IOCTL_INFO_FNC(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE),
-	IOCTL_INFO_FNC(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE),
-	IOCTL_INFO_FNC(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
-	IOCTL_INFO_FNC(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
-	IOCTL_INFO_FNC(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)),
-	IOCTL_INFO_FNC(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO),
-	IOCTL_INFO_FNC(VIDIOC_G_STD, v4l_g_std, v4l_print_std, 0),
-	IOCTL_INFO_FNC(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO),
-	IOCTL_INFO_FNC(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)),
-	IOCTL_INFO_FNC(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)),
-	IOCTL_INFO_FNC(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)),
-	IOCTL_INFO_FNC(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL),
-	IOCTL_INFO_FNC(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)),
-	IOCTL_INFO_FNC(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO),
-	IOCTL_INFO_STD(VIDIOC_G_AUDIO, vidioc_g_audio, v4l_print_audio, 0),
-	IOCTL_INFO_STD(VIDIOC_S_AUDIO, vidioc_s_audio, v4l_print_audio, INFO_FL_PRIO),
-	IOCTL_INFO_FNC(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)),
-	IOCTL_INFO_FNC(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)),
-	IOCTL_INFO_STD(VIDIOC_G_INPUT, vidioc_g_input, v4l_print_u32, 0),
-	IOCTL_INFO_FNC(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO),
-	IOCTL_INFO_STD(VIDIOC_G_OUTPUT, vidioc_g_output, v4l_print_u32, 0),
-	IOCTL_INFO_FNC(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO),
-	IOCTL_INFO_FNC(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)),
-	IOCTL_INFO_STD(VIDIOC_G_AUDOUT, vidioc_g_audout, v4l_print_audioout, 0),
-	IOCTL_INFO_STD(VIDIOC_S_AUDOUT, vidioc_s_audout, v4l_print_audioout, INFO_FL_PRIO),
-	IOCTL_INFO_FNC(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)),
-	IOCTL_INFO_STD(VIDIOC_S_MODULATOR, vidioc_s_modulator, v4l_print_modulator, INFO_FL_PRIO),
-	IOCTL_INFO_FNC(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)),
-	IOCTL_INFO_FNC(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO),
-	IOCTL_INFO_FNC(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)),
-	IOCTL_INFO_FNC(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)),
-	IOCTL_INFO_FNC(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO),
-	IOCTL_INFO_STD(VIDIOC_G_SELECTION, vidioc_g_selection, v4l_print_selection, 0),
-	IOCTL_INFO_STD(VIDIOC_S_SELECTION, vidioc_s_selection, v4l_print_selection, INFO_FL_PRIO),
-	IOCTL_INFO_STD(VIDIOC_G_JPEGCOMP, vidioc_g_jpegcomp, v4l_print_jpegcompression, 0),
-	IOCTL_INFO_STD(VIDIOC_S_JPEGCOMP, vidioc_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO),
-	IOCTL_INFO_FNC(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0),
-	IOCTL_INFO_FNC(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0),
-	IOCTL_INFO_STD(VIDIOC_ENUMAUDIO, vidioc_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)),
-	IOCTL_INFO_STD(VIDIOC_ENUMAUDOUT, vidioc_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)),
-	IOCTL_INFO_FNC(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0),
-	IOCTL_INFO_FNC(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO),
-	IOCTL_INFO_FNC(VIDIOC_G_SLICED_VBI_CAP, v4l_g_sliced_vbi_cap, v4l_print_sliced_vbi_cap, INFO_FL_CLEAR(v4l2_sliced_vbi_cap, type)),
-	IOCTL_INFO_FNC(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0),
-	IOCTL_INFO_FNC(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
-	IOCTL_INFO_FNC(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL),
-	IOCTL_INFO_FNC(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
-	IOCTL_INFO_STD(VIDIOC_ENUM_FRAMESIZES, vidioc_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)),
-	IOCTL_INFO_STD(VIDIOC_ENUM_FRAMEINTERVALS, vidioc_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)),
-	IOCTL_INFO_STD(VIDIOC_G_ENC_INDEX, vidioc_g_enc_index, v4l_print_enc_idx, 0),
-	IOCTL_INFO_STD(VIDIOC_ENCODER_CMD, vidioc_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
-	IOCTL_INFO_STD(VIDIOC_TRY_ENCODER_CMD, vidioc_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
-	IOCTL_INFO_STD(VIDIOC_DECODER_CMD, vidioc_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO),
-	IOCTL_INFO_STD(VIDIOC_TRY_DECODER_CMD, vidioc_try_decoder_cmd, v4l_print_decoder_cmd, 0),
-	IOCTL_INFO_FNC(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0),
-	IOCTL_INFO_FNC(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0),
-	IOCTL_INFO_FNC(VIDIOC_DBG_G_CHIP_IDENT, v4l_dbg_g_chip_ident, v4l_print_dbg_chip_ident, 0),
-	IOCTL_INFO_FNC(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO),
-	IOCTL_INFO_STD(VIDIOC_ENUM_DV_PRESETS, vidioc_enum_dv_presets, v4l_print_dv_enum_presets, 0),
-	IOCTL_INFO_STD(VIDIOC_S_DV_PRESET, vidioc_s_dv_preset, v4l_print_dv_preset, INFO_FL_PRIO),
-	IOCTL_INFO_STD(VIDIOC_G_DV_PRESET, vidioc_g_dv_preset, v4l_print_dv_preset, 0),
-	IOCTL_INFO_STD(VIDIOC_QUERY_DV_PRESET, vidioc_query_dv_preset, v4l_print_dv_preset, 0),
-	IOCTL_INFO_STD(VIDIOC_S_DV_TIMINGS, vidioc_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO),
-	IOCTL_INFO_STD(VIDIOC_G_DV_TIMINGS, vidioc_g_dv_timings, v4l_print_dv_timings, 0),
-	IOCTL_INFO_FNC(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0),
-	IOCTL_INFO_FNC(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0),
-	IOCTL_INFO_FNC(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0),
-	IOCTL_INFO_FNC(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE),
-	IOCTL_INFO_FNC(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE),
-	IOCTL_INFO_STD(VIDIOC_ENUM_DV_TIMINGS, vidioc_enum_dv_timings, v4l_print_enum_dv_timings, 0),
-	IOCTL_INFO_STD(VIDIOC_QUERY_DV_TIMINGS, vidioc_query_dv_timings, v4l_print_dv_timings, 0),
-	IOCTL_INFO_STD(VIDIOC_DV_TIMINGS_CAP, vidioc_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, type)),
-	IOCTL_INFO_FNC(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
-};
-#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
-
-bool v4l2_is_known_ioctl(unsigned int cmd)
-{
-	if (_IOC_NR(cmd) >= V4L2_IOCTLS)
-		return false;
-	return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd;
-}
-
-struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned cmd)
-{
-	if (_IOC_NR(cmd) >= V4L2_IOCTLS)
-		return vdev->lock;
-	if (test_bit(_IOC_NR(cmd), vdev->disable_locking))
-		return NULL;
-	if (vdev->queue && vdev->queue->lock &&
-			(v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE))
-		return vdev->queue->lock;
-	return vdev->lock;
-}
-
-/* Common ioctl debug function. This function can be used by
-   external ioctl messages as well as internal V4L ioctl */
-void v4l_printk_ioctl(const char *prefix, unsigned int cmd)
-{
-	const char *dir, *type;
-
-	if (prefix)
-		printk(KERN_DEBUG "%s: ", prefix);
-
-	switch (_IOC_TYPE(cmd)) {
-	case 'd':
-		type = "v4l2_int";
-		break;
-	case 'V':
-		if (_IOC_NR(cmd) >= V4L2_IOCTLS) {
-			type = "v4l2";
-			break;
-		}
-		pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name);
-		return;
-	default:
-		type = "unknown";
-		break;
-	}
-
-	switch (_IOC_DIR(cmd)) {
-	case _IOC_NONE:              dir = "--"; break;
-	case _IOC_READ:              dir = "r-"; break;
-	case _IOC_WRITE:             dir = "-w"; break;
-	case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
-	default:                     dir = "*ERR*"; break;
-	}
-	pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",
-		type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
-}
-EXPORT_SYMBOL(v4l_printk_ioctl);
-
-static long __video_do_ioctl(struct file *file,
-		unsigned int cmd, void *arg)
-{
-	struct video_device *vfd = video_devdata(file);
-	const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
-	bool write_only = false;
-	struct v4l2_ioctl_info default_info;
-	const struct v4l2_ioctl_info *info;
-	void *fh = file->private_data;
-	struct v4l2_fh *vfh = NULL;
-	int use_fh_prio = 0;
-	int debug = vfd->debug;
-	long ret = -ENOTTY;
-
-	if (ops == NULL) {
-		pr_warn("%s: has no ioctl_ops.\n",
-				video_device_node_name(vfd));
-		return ret;
-	}
-
-	if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) {
-		vfh = file->private_data;
-		use_fh_prio = test_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags);
-	}
-
-	if (v4l2_is_known_ioctl(cmd)) {
-		info = &v4l2_ioctls[_IOC_NR(cmd)];
-
-	        if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) &&
-		    !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler))
-			goto done;
-
-		if (use_fh_prio && (info->flags & INFO_FL_PRIO)) {
-			ret = v4l2_prio_check(vfd->prio, vfh->prio);
-			if (ret)
-				goto done;
-		}
-	} else {
-		default_info.ioctl = cmd;
-		default_info.flags = 0;
-		default_info.debug = v4l_print_default;
-		info = &default_info;
-	}
-
-	write_only = _IOC_DIR(cmd) == _IOC_WRITE;
-	if (write_only && debug > V4L2_DEBUG_IOCTL) {
-		v4l_printk_ioctl(video_device_node_name(vfd), cmd);
-		pr_cont(": ");
-		info->debug(arg, write_only);
-	}
-	if (info->flags & INFO_FL_STD) {
-		typedef int (*vidioc_op)(struct file *file, void *fh, void *p);
-		const void *p = vfd->ioctl_ops;
-		const vidioc_op *vidioc = p + info->u.offset;
-
-		ret = (*vidioc)(file, fh, arg);
-	} else if (info->flags & INFO_FL_FUNC) {
-		ret = info->u.func(ops, file, fh, arg);
-	} else if (!ops->vidioc_default) {
-		ret = -ENOTTY;
-	} else {
-		ret = ops->vidioc_default(file, fh,
-			use_fh_prio ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0,
-			cmd, arg);
-	}
-
-done:
-	if (debug) {
-		if (write_only && debug > V4L2_DEBUG_IOCTL) {
-			if (ret < 0)
-				printk(KERN_DEBUG "%s: error %ld\n",
-					video_device_node_name(vfd), ret);
-			return ret;
-		}
-		v4l_printk_ioctl(video_device_node_name(vfd), cmd);
-		if (ret < 0)
-			pr_cont(": error %ld\n", ret);
-		else if (debug == V4L2_DEBUG_IOCTL)
-			pr_cont("\n");
-		else if (_IOC_DIR(cmd) == _IOC_NONE)
-			info->debug(arg, write_only);
-		else {
-			pr_cont(": ");
-			info->debug(arg, write_only);
-		}
-	}
-
-	return ret;
-}
-
-static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
-			    void * __user *user_ptr, void ***kernel_ptr)
-{
-	int ret = 0;
-
-	switch (cmd) {
-	case VIDIOC_QUERYBUF:
-	case VIDIOC_QBUF:
-	case VIDIOC_DQBUF: {
-		struct v4l2_buffer *buf = parg;
-
-		if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) {
-			if (buf->length > VIDEO_MAX_PLANES) {
-				ret = -EINVAL;
-				break;
-			}
-			*user_ptr = (void __user *)buf->m.planes;
-			*kernel_ptr = (void *)&buf->m.planes;
-			*array_size = sizeof(struct v4l2_plane) * buf->length;
-			ret = 1;
-		}
-		break;
-	}
-
-	case VIDIOC_S_EXT_CTRLS:
-	case VIDIOC_G_EXT_CTRLS:
-	case VIDIOC_TRY_EXT_CTRLS: {
-		struct v4l2_ext_controls *ctrls = parg;
-
-		if (ctrls->count != 0) {
-			if (ctrls->count > V4L2_CID_MAX_CTRLS) {
-				ret = -EINVAL;
-				break;
-			}
-			*user_ptr = (void __user *)ctrls->controls;
-			*kernel_ptr = (void *)&ctrls->controls;
-			*array_size = sizeof(struct v4l2_ext_control)
-				    * ctrls->count;
-			ret = 1;
-		}
-		break;
-	}
-	}
-
-	return ret;
-}
-
-long
-video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
-	       v4l2_kioctl func)
-{
-	char	sbuf[128];
-	void    *mbuf = NULL;
-	void	*parg = (void *)arg;
-	long	err  = -EINVAL;
-	bool	has_array_args;
-	size_t  array_size = 0;
-	void __user *user_ptr = NULL;
-	void	**kernel_ptr = NULL;
-
-	/*  Copy arguments into temp kernel buffer  */
-	if (_IOC_DIR(cmd) != _IOC_NONE) {
-		if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
-			parg = sbuf;
-		} else {
-			/* too big to allocate from stack */
-			mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL);
-			if (NULL == mbuf)
-				return -ENOMEM;
-			parg = mbuf;
-		}
-
-		err = -EFAULT;
-		if (_IOC_DIR(cmd) & _IOC_WRITE) {
-			unsigned int n = _IOC_SIZE(cmd);
-
-			/*
-			 * In some cases, only a few fields are used as input,
-			 * i.e. when the app sets "index" and then the driver
-			 * fills in the rest of the structure for the thing
-			 * with that index.  We only need to copy up the first
-			 * non-input field.
-			 */
-			if (v4l2_is_known_ioctl(cmd)) {
-				u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags;
-				if (flags & INFO_FL_CLEAR_MASK)
-					n = (flags & INFO_FL_CLEAR_MASK) >> 16;
-			}
-
-			if (copy_from_user(parg, (void __user *)arg, n))
-				goto out;
-
-			/* zero out anything we don't copy from userspace */
-			if (n < _IOC_SIZE(cmd))
-				memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n);
-		} else {
-			/* read-only ioctl */
-			memset(parg, 0, _IOC_SIZE(cmd));
-		}
-	}
-
-	err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr);
-	if (err < 0)
-		goto out;
-	has_array_args = err;
-
-	if (has_array_args) {
-		/*
-		 * When adding new types of array args, make sure that the
-		 * parent argument to ioctl (which contains the pointer to the
-		 * array) fits into sbuf (so that mbuf will still remain
-		 * unused up to here).
-		 */
-		mbuf = kmalloc(array_size, GFP_KERNEL);
-		err = -ENOMEM;
-		if (NULL == mbuf)
-			goto out_array_args;
-		err = -EFAULT;
-		if (copy_from_user(mbuf, user_ptr, array_size))
-			goto out_array_args;
-		*kernel_ptr = mbuf;
-	}
-
-	/* Handles IOCTL */
-	err = func(file, cmd, parg);
-	if (err == -ENOIOCTLCMD)
-		err = -ENOTTY;
-
-	if (has_array_args) {
-		*kernel_ptr = user_ptr;
-		if (copy_to_user(user_ptr, mbuf, array_size))
-			err = -EFAULT;
-		goto out_array_args;
-	}
-	/* VIDIOC_QUERY_DV_TIMINGS can return an error, but still have valid
-	   results that must be returned. */
-	if (err < 0 && cmd != VIDIOC_QUERY_DV_TIMINGS)
-		goto out;
-
-out_array_args:
-	/*  Copy results into user buffer  */
-	switch (_IOC_DIR(cmd)) {
-	case _IOC_READ:
-	case (_IOC_WRITE | _IOC_READ):
-		if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
-			err = -EFAULT;
-		break;
-	}
-
-out:
-	kfree(mbuf);
-	return err;
-}
-EXPORT_SYMBOL(video_usercopy);
-
-long video_ioctl2(struct file *file,
-	       unsigned int cmd, unsigned long arg)
-{
-	return video_usercopy(file, cmd, arg, __video_do_ioctl);
-}
-EXPORT_SYMBOL(video_ioctl2);
diff --git a/drivers/media/video/v4l2-mem2mem.c b/drivers/media/video/v4l2-mem2mem.c
deleted file mode 100644
index 97b48318aee1..000000000000
--- a/drivers/media/video/v4l2-mem2mem.c
+++ /dev/null
@@ -1,647 +0,0 @@
-/*
- * Memory-to-memory device framework for Video for Linux 2 and videobuf.
- *
- * Helper functions for devices that use videobuf buffers for both their
- * source and destination.
- *
- * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd.
- * Pawel Osciak, <pawel@osciak.com>
- * Marek Szyprowski, <m.szyprowski@samsung.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- */
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-
-#include <media/videobuf2-core.h>
-#include <media/v4l2-mem2mem.h>
-#include <media/v4l2-dev.h>
-#include <media/v4l2-fh.h>
-#include <media/v4l2-event.h>
-
-MODULE_DESCRIPTION("Mem to mem device framework for videobuf");
-MODULE_AUTHOR("Pawel Osciak, <pawel@osciak.com>");
-MODULE_LICENSE("GPL");
-
-static bool debug;
-module_param(debug, bool, 0644);
-
-#define dprintk(fmt, arg...)						\
-	do {								\
-		if (debug)						\
-			printk(KERN_DEBUG "%s: " fmt, __func__, ## arg);\
-	} while (0)
-
-
-/* Instance is already queued on the job_queue */
-#define TRANS_QUEUED		(1 << 0)
-/* Instance is currently running in hardware */
-#define TRANS_RUNNING		(1 << 1)
-
-
-/* Offset base for buffers on the destination queue - used to distinguish
- * between source and destination buffers when mmapping - they receive the same
- * offsets but for different queues */
-#define DST_QUEUE_OFF_BASE	(1 << 30)
-
-
-/**
- * struct v4l2_m2m_dev - per-device context
- * @curr_ctx:		currently running instance
- * @job_queue:		instances queued to run
- * @job_spinlock:	protects job_queue
- * @m2m_ops:		driver callbacks
- */
-struct v4l2_m2m_dev {
-	struct v4l2_m2m_ctx	*curr_ctx;
-
-	struct list_head	job_queue;
-	spinlock_t		job_spinlock;
-
-	struct v4l2_m2m_ops	*m2m_ops;
-};
-
-static struct v4l2_m2m_queue_ctx *get_queue_ctx(struct v4l2_m2m_ctx *m2m_ctx,
-						enum v4l2_buf_type type)
-{
-	if (V4L2_TYPE_IS_OUTPUT(type))
-		return &m2m_ctx->out_q_ctx;
-	else
-		return &m2m_ctx->cap_q_ctx;
-}
-
-/**
- * v4l2_m2m_get_vq() - return vb2_queue for the given type
- */
-struct vb2_queue *v4l2_m2m_get_vq(struct v4l2_m2m_ctx *m2m_ctx,
-				       enum v4l2_buf_type type)
-{
-	struct v4l2_m2m_queue_ctx *q_ctx;
-
-	q_ctx = get_queue_ctx(m2m_ctx, type);
-	if (!q_ctx)
-		return NULL;
-
-	return &q_ctx->q;
-}
-EXPORT_SYMBOL(v4l2_m2m_get_vq);
-
-/**
- * v4l2_m2m_next_buf() - return next buffer from the list of ready buffers
- */
-void *v4l2_m2m_next_buf(struct v4l2_m2m_queue_ctx *q_ctx)
-{
-	struct v4l2_m2m_buffer *b = NULL;
-	unsigned long flags;
-
-	spin_lock_irqsave(&q_ctx->rdy_spinlock, flags);
-
-	if (list_empty(&q_ctx->rdy_queue)) {
-		spin_unlock_irqrestore(&q_ctx->rdy_spinlock, flags);
-		return NULL;
-	}
-
-	b = list_entry(q_ctx->rdy_queue.next, struct v4l2_m2m_buffer, list);
-	spin_unlock_irqrestore(&q_ctx->rdy_spinlock, flags);
-	return &b->vb;
-}
-EXPORT_SYMBOL_GPL(v4l2_m2m_next_buf);
-
-/**
- * v4l2_m2m_buf_remove() - take off a buffer from the list of ready buffers and
- * return it
- */
-void *v4l2_m2m_buf_remove(struct v4l2_m2m_queue_ctx *q_ctx)
-{
-	struct v4l2_m2m_buffer *b = NULL;
-	unsigned long flags;
-
-	spin_lock_irqsave(&q_ctx->rdy_spinlock, flags);
-	if (list_empty(&q_ctx->rdy_queue)) {
-		spin_unlock_irqrestore(&q_ctx->rdy_spinlock, flags);
-		return NULL;
-	}
-	b = list_entry(q_ctx->rdy_queue.next, struct v4l2_m2m_buffer, list);
-	list_del(&b->list);
-	q_ctx->num_rdy--;
-	spin_unlock_irqrestore(&q_ctx->rdy_spinlock, flags);
-
-	return &b->vb;
-}
-EXPORT_SYMBOL_GPL(v4l2_m2m_buf_remove);
-
-/*
- * Scheduling handlers
- */
-
-/**
- * v4l2_m2m_get_curr_priv() - return driver private data for the currently
- * running instance or NULL if no instance is running
- */
-void *v4l2_m2m_get_curr_priv(struct v4l2_m2m_dev *m2m_dev)
-{
-	unsigned long flags;
-	void *ret = NULL;
-
-	spin_lock_irqsave(&m2m_dev->job_spinlock, flags);
-	if (m2m_dev->curr_ctx)
-		ret = m2m_dev->curr_ctx->priv;
-	spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags);
-
-	return ret;
-}
-EXPORT_SYMBOL(v4l2_m2m_get_curr_priv);
-
-/**
- * v4l2_m2m_try_run() - select next job to perform and run it if possible
- *
- * Get next transaction (if present) from the waiting jobs list and run it.
- */
-static void v4l2_m2m_try_run(struct v4l2_m2m_dev *m2m_dev)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&m2m_dev->job_spinlock, flags);
-	if (NULL != m2m_dev->curr_ctx) {
-		spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags);
-		dprintk("Another instance is running, won't run now\n");
-		return;
-	}
-
-	if (list_empty(&m2m_dev->job_queue)) {
-		spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags);
-		dprintk("No job pending\n");
-		return;
-	}
-
-	m2m_dev->curr_ctx = list_entry(m2m_dev->job_queue.next,
-				   struct v4l2_m2m_ctx, queue);
-	m2m_dev->curr_ctx->job_flags |= TRANS_RUNNING;
-	spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags);
-
-	m2m_dev->m2m_ops->device_run(m2m_dev->curr_ctx->priv);
-}
-
-/**
- * v4l2_m2m_try_schedule() - check whether an instance is ready to be added to
- * the pending job queue and add it if so.
- * @m2m_ctx:	m2m context assigned to the instance to be checked
- *
- * There are three basic requirements an instance has to meet to be able to run:
- * 1) at least one source buffer has to be queued,
- * 2) at least one destination buffer has to be queued,
- * 3) streaming has to be on.
- *
- * There may also be additional, custom requirements. In such case the driver
- * should supply a custom callback (job_ready in v4l2_m2m_ops) that should
- * return 1 if the instance is ready.
- * An example of the above could be an instance that requires more than one
- * src/dst buffer per transaction.
- */
-static void v4l2_m2m_try_schedule(struct v4l2_m2m_ctx *m2m_ctx)
-{
-	struct v4l2_m2m_dev *m2m_dev;
-	unsigned long flags_job, flags;
-
-	m2m_dev = m2m_ctx->m2m_dev;
-	dprintk("Trying to schedule a job for m2m_ctx: %p\n", m2m_ctx);
-
-	if (!m2m_ctx->out_q_ctx.q.streaming
-	    || !m2m_ctx->cap_q_ctx.q.streaming) {
-		dprintk("Streaming needs to be on for both queues\n");
-		return;
-	}
-
-	spin_lock_irqsave(&m2m_dev->job_spinlock, flags_job);
-	if (m2m_ctx->job_flags & TRANS_QUEUED) {
-		spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags_job);
-		dprintk("On job queue already\n");
-		return;
-	}
-
-	spin_lock_irqsave(&m2m_ctx->out_q_ctx.rdy_spinlock, flags);
-	if (list_empty(&m2m_ctx->out_q_ctx.rdy_queue)) {
-		spin_unlock_irqrestore(&m2m_ctx->out_q_ctx.rdy_spinlock, flags);
-		spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags_job);
-		dprintk("No input buffers available\n");
-		return;
-	}
-	if (list_empty(&m2m_ctx->cap_q_ctx.rdy_queue)) {
-		spin_unlock_irqrestore(&m2m_ctx->out_q_ctx.rdy_spinlock, flags);
-		spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags_job);
-		dprintk("No output buffers available\n");
-		return;
-	}
-	spin_unlock_irqrestore(&m2m_ctx->out_q_ctx.rdy_spinlock, flags);
-
-	if (m2m_dev->m2m_ops->job_ready
-		&& (!m2m_dev->m2m_ops->job_ready(m2m_ctx->priv))) {
-		spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags_job);
-		dprintk("Driver not ready\n");
-		return;
-	}
-
-	list_add_tail(&m2m_ctx->queue, &m2m_dev->job_queue);
-	m2m_ctx->job_flags |= TRANS_QUEUED;
-
-	spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags_job);
-
-	v4l2_m2m_try_run(m2m_dev);
-}
-
-/**
- * v4l2_m2m_job_finish() - inform the framework that a job has been finished
- * and have it clean up
- *
- * Called by a driver to yield back the device after it has finished with it.
- * Should be called as soon as possible after reaching a state which allows
- * other instances to take control of the device.
- *
- * This function has to be called only after device_run() callback has been
- * called on the driver. To prevent recursion, it should not be called directly
- * from the device_run() callback though.
- */
-void v4l2_m2m_job_finish(struct v4l2_m2m_dev *m2m_dev,
-			 struct v4l2_m2m_ctx *m2m_ctx)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&m2m_dev->job_spinlock, flags);
-	if (!m2m_dev->curr_ctx || m2m_dev->curr_ctx != m2m_ctx) {
-		spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags);
-		dprintk("Called by an instance not currently running\n");
-		return;
-	}
-
-	list_del(&m2m_dev->curr_ctx->queue);
-	m2m_dev->curr_ctx->job_flags &= ~(TRANS_QUEUED | TRANS_RUNNING);
-	wake_up(&m2m_dev->curr_ctx->finished);
-	m2m_dev->curr_ctx = NULL;
-
-	spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags);
-
-	/* This instance might have more buffers ready, but since we do not
-	 * allow more than one job on the job_queue per instance, each has
-	 * to be scheduled separately after the previous one finishes. */
-	v4l2_m2m_try_schedule(m2m_ctx);
-	v4l2_m2m_try_run(m2m_dev);
-}
-EXPORT_SYMBOL(v4l2_m2m_job_finish);
-
-/**
- * v4l2_m2m_reqbufs() - multi-queue-aware REQBUFS multiplexer
- */
-int v4l2_m2m_reqbufs(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
-		     struct v4l2_requestbuffers *reqbufs)
-{
-	struct vb2_queue *vq;
-
-	vq = v4l2_m2m_get_vq(m2m_ctx, reqbufs->type);
-	return vb2_reqbufs(vq, reqbufs);
-}
-EXPORT_SYMBOL_GPL(v4l2_m2m_reqbufs);
-
-/**
- * v4l2_m2m_querybuf() - multi-queue-aware QUERYBUF multiplexer
- *
- * See v4l2_m2m_mmap() documentation for details.
- */
-int v4l2_m2m_querybuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
-		      struct v4l2_buffer *buf)
-{
-	struct vb2_queue *vq;
-	int ret = 0;
-	unsigned int i;
-
-	vq = v4l2_m2m_get_vq(m2m_ctx, buf->type);
-	ret = vb2_querybuf(vq, buf);
-
-	/* Adjust MMAP memory offsets for the CAPTURE queue */
-	if (buf->memory == V4L2_MEMORY_MMAP && !V4L2_TYPE_IS_OUTPUT(vq->type)) {
-		if (V4L2_TYPE_IS_MULTIPLANAR(vq->type)) {
-			for (i = 0; i < buf->length; ++i)
-				buf->m.planes[i].m.mem_offset
-					+= DST_QUEUE_OFF_BASE;
-		} else {
-			buf->m.offset += DST_QUEUE_OFF_BASE;
-		}
-	}
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(v4l2_m2m_querybuf);
-
-/**
- * v4l2_m2m_qbuf() - enqueue a source or destination buffer, depending on
- * the type
- */
-int v4l2_m2m_qbuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
-		  struct v4l2_buffer *buf)
-{
-	struct vb2_queue *vq;
-	int ret;
-
-	vq = v4l2_m2m_get_vq(m2m_ctx, buf->type);
-	ret = vb2_qbuf(vq, buf);
-	if (!ret)
-		v4l2_m2m_try_schedule(m2m_ctx);
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(v4l2_m2m_qbuf);
-
-/**
- * v4l2_m2m_dqbuf() - dequeue a source or destination buffer, depending on
- * the type
- */
-int v4l2_m2m_dqbuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
-		   struct v4l2_buffer *buf)
-{
-	struct vb2_queue *vq;
-
-	vq = v4l2_m2m_get_vq(m2m_ctx, buf->type);
-	return vb2_dqbuf(vq, buf, file->f_flags & O_NONBLOCK);
-}
-EXPORT_SYMBOL_GPL(v4l2_m2m_dqbuf);
-
-/**
- * v4l2_m2m_streamon() - turn on streaming for a video queue
- */
-int v4l2_m2m_streamon(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
-		      enum v4l2_buf_type type)
-{
-	struct vb2_queue *vq;
-	int ret;
-
-	vq = v4l2_m2m_get_vq(m2m_ctx, type);
-	ret = vb2_streamon(vq, type);
-	if (!ret)
-		v4l2_m2m_try_schedule(m2m_ctx);
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(v4l2_m2m_streamon);
-
-/**
- * v4l2_m2m_streamoff() - turn off streaming for a video queue
- */
-int v4l2_m2m_streamoff(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
-		       enum v4l2_buf_type type)
-{
-	struct vb2_queue *vq;
-
-	vq = v4l2_m2m_get_vq(m2m_ctx, type);
-	return vb2_streamoff(vq, type);
-}
-EXPORT_SYMBOL_GPL(v4l2_m2m_streamoff);
-
-/**
- * v4l2_m2m_poll() - poll replacement, for destination buffers only
- *
- * Call from the driver's poll() function. Will poll both queues. If a buffer
- * is available to dequeue (with dqbuf) from the source queue, this will
- * indicate that a non-blocking write can be performed, while read will be
- * returned in case of the destination queue.
- */
-unsigned int v4l2_m2m_poll(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
-			   struct poll_table_struct *wait)
-{
-	struct video_device *vfd = video_devdata(file);
-	unsigned long req_events = poll_requested_events(wait);
-	struct vb2_queue *src_q, *dst_q;
-	struct vb2_buffer *src_vb = NULL, *dst_vb = NULL;
-	unsigned int rc = 0;
-	unsigned long flags;
-
-	if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) {
-		struct v4l2_fh *fh = file->private_data;
-
-		if (v4l2_event_pending(fh))
-			rc = POLLPRI;
-		else if (req_events & POLLPRI)
-			poll_wait(file, &fh->wait, wait);
-		if (!(req_events & (POLLOUT | POLLWRNORM | POLLIN | POLLRDNORM)))
-			return rc;
-	}
-
-	src_q = v4l2_m2m_get_src_vq(m2m_ctx);
-	dst_q = v4l2_m2m_get_dst_vq(m2m_ctx);
-
-	/*
-	 * There has to be at least one buffer queued on each queued_list, which
-	 * means either in driver already or waiting for driver to claim it
-	 * and start processing.
-	 */
-	if ((!src_q->streaming || list_empty(&src_q->queued_list))
-		&& (!dst_q->streaming || list_empty(&dst_q->queued_list))) {
-		rc |= POLLERR;
-		goto end;
-	}
-
-	if (m2m_ctx->m2m_dev->m2m_ops->unlock)
-		m2m_ctx->m2m_dev->m2m_ops->unlock(m2m_ctx->priv);
-
-	poll_wait(file, &src_q->done_wq, wait);
-	poll_wait(file, &dst_q->done_wq, wait);
-
-	if (m2m_ctx->m2m_dev->m2m_ops->lock)
-		m2m_ctx->m2m_dev->m2m_ops->lock(m2m_ctx->priv);
-
-	spin_lock_irqsave(&src_q->done_lock, flags);
-	if (!list_empty(&src_q->done_list))
-		src_vb = list_first_entry(&src_q->done_list, struct vb2_buffer,
-						done_entry);
-	if (src_vb && (src_vb->state == VB2_BUF_STATE_DONE
-			|| src_vb->state == VB2_BUF_STATE_ERROR))
-		rc |= POLLOUT | POLLWRNORM;
-	spin_unlock_irqrestore(&src_q->done_lock, flags);
-
-	spin_lock_irqsave(&dst_q->done_lock, flags);
-	if (!list_empty(&dst_q->done_list))
-		dst_vb = list_first_entry(&dst_q->done_list, struct vb2_buffer,
-						done_entry);
-	if (dst_vb && (dst_vb->state == VB2_BUF_STATE_DONE
-			|| dst_vb->state == VB2_BUF_STATE_ERROR))
-		rc |= POLLIN | POLLRDNORM;
-	spin_unlock_irqrestore(&dst_q->done_lock, flags);
-
-end:
-	return rc;
-}
-EXPORT_SYMBOL_GPL(v4l2_m2m_poll);
-
-/**
- * v4l2_m2m_mmap() - source and destination queues-aware mmap multiplexer
- *
- * Call from driver's mmap() function. Will handle mmap() for both queues
- * seamlessly for videobuffer, which will receive normal per-queue offsets and
- * proper videobuf queue pointers. The differentiation is made outside videobuf
- * by adding a predefined offset to buffers from one of the queues and
- * subtracting it before passing it back to videobuf. Only drivers (and
- * thus applications) receive modified offsets.
- */
-int v4l2_m2m_mmap(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
-			 struct vm_area_struct *vma)
-{
-	unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
-	struct vb2_queue *vq;
-
-	if (offset < DST_QUEUE_OFF_BASE) {
-		vq = v4l2_m2m_get_src_vq(m2m_ctx);
-	} else {
-		vq = v4l2_m2m_get_dst_vq(m2m_ctx);
-		vma->vm_pgoff -= (DST_QUEUE_OFF_BASE >> PAGE_SHIFT);
-	}
-
-	return vb2_mmap(vq, vma);
-}
-EXPORT_SYMBOL(v4l2_m2m_mmap);
-
-/**
- * v4l2_m2m_init() - initialize per-driver m2m data
- *
- * Usually called from driver's probe() function.
- */
-struct v4l2_m2m_dev *v4l2_m2m_init(struct v4l2_m2m_ops *m2m_ops)
-{
-	struct v4l2_m2m_dev *m2m_dev;
-
-	if (!m2m_ops)
-		return ERR_PTR(-EINVAL);
-
-	BUG_ON(!m2m_ops->device_run);
-	BUG_ON(!m2m_ops->job_abort);
-
-	m2m_dev = kzalloc(sizeof *m2m_dev, GFP_KERNEL);
-	if (!m2m_dev)
-		return ERR_PTR(-ENOMEM);
-
-	m2m_dev->curr_ctx = NULL;
-	m2m_dev->m2m_ops = m2m_ops;
-	INIT_LIST_HEAD(&m2m_dev->job_queue);
-	spin_lock_init(&m2m_dev->job_spinlock);
-
-	return m2m_dev;
-}
-EXPORT_SYMBOL_GPL(v4l2_m2m_init);
-
-/**
- * v4l2_m2m_release() - cleans up and frees a m2m_dev structure
- *
- * Usually called from driver's remove() function.
- */
-void v4l2_m2m_release(struct v4l2_m2m_dev *m2m_dev)
-{
-	kfree(m2m_dev);
-}
-EXPORT_SYMBOL_GPL(v4l2_m2m_release);
-
-/**
- * v4l2_m2m_ctx_init() - allocate and initialize a m2m context
- * @priv - driver's instance private data
- * @m2m_dev - a previously initialized m2m_dev struct
- * @vq_init - a callback for queue type-specific initialization function to be
- * used for initializing videobuf_queues
- *
- * Usually called from driver's open() function.
- */
-struct v4l2_m2m_ctx *v4l2_m2m_ctx_init(struct v4l2_m2m_dev *m2m_dev,
-		void *drv_priv,
-		int (*queue_init)(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq))
-{
-	struct v4l2_m2m_ctx *m2m_ctx;
-	struct v4l2_m2m_queue_ctx *out_q_ctx, *cap_q_ctx;
-	int ret;
-
-	m2m_ctx = kzalloc(sizeof *m2m_ctx, GFP_KERNEL);
-	if (!m2m_ctx)
-		return ERR_PTR(-ENOMEM);
-
-	m2m_ctx->priv = drv_priv;
-	m2m_ctx->m2m_dev = m2m_dev;
-	init_waitqueue_head(&m2m_ctx->finished);
-
-	out_q_ctx = &m2m_ctx->out_q_ctx;
-	cap_q_ctx = &m2m_ctx->cap_q_ctx;
-
-	INIT_LIST_HEAD(&out_q_ctx->rdy_queue);
-	INIT_LIST_HEAD(&cap_q_ctx->rdy_queue);
-	spin_lock_init(&out_q_ctx->rdy_spinlock);
-	spin_lock_init(&cap_q_ctx->rdy_spinlock);
-
-	INIT_LIST_HEAD(&m2m_ctx->queue);
-
-	ret = queue_init(drv_priv, &out_q_ctx->q, &cap_q_ctx->q);
-
-	if (ret)
-		goto err;
-
-	return m2m_ctx;
-err:
-	kfree(m2m_ctx);
-	return ERR_PTR(ret);
-}
-EXPORT_SYMBOL_GPL(v4l2_m2m_ctx_init);
-
-/**
- * v4l2_m2m_ctx_release() - release m2m context
- *
- * Usually called from driver's release() function.
- */
-void v4l2_m2m_ctx_release(struct v4l2_m2m_ctx *m2m_ctx)
-{
-	struct v4l2_m2m_dev *m2m_dev;
-	unsigned long flags;
-
-	m2m_dev = m2m_ctx->m2m_dev;
-
-	spin_lock_irqsave(&m2m_dev->job_spinlock, flags);
-	if (m2m_ctx->job_flags & TRANS_RUNNING) {
-		spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags);
-		m2m_dev->m2m_ops->job_abort(m2m_ctx->priv);
-		dprintk("m2m_ctx %p running, will wait to complete", m2m_ctx);
-		wait_event(m2m_ctx->finished, !(m2m_ctx->job_flags & TRANS_RUNNING));
-	} else if (m2m_ctx->job_flags & TRANS_QUEUED) {
-		list_del(&m2m_ctx->queue);
-		m2m_ctx->job_flags &= ~(TRANS_QUEUED | TRANS_RUNNING);
-		spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags);
-		dprintk("m2m_ctx: %p had been on queue and was removed\n",
-			m2m_ctx);
-	} else {
-		/* Do nothing, was not on queue/running */
-		spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags);
-	}
-
-	vb2_queue_release(&m2m_ctx->cap_q_ctx.q);
-	vb2_queue_release(&m2m_ctx->out_q_ctx.q);
-
-	kfree(m2m_ctx);
-}
-EXPORT_SYMBOL_GPL(v4l2_m2m_ctx_release);
-
-/**
- * v4l2_m2m_buf_queue() - add a buffer to the proper ready buffers list.
- *
- * Call from buf_queue(), videobuf_queue_ops callback.
- */
-void v4l2_m2m_buf_queue(struct v4l2_m2m_ctx *m2m_ctx, struct vb2_buffer *vb)
-{
-	struct v4l2_m2m_buffer *b = container_of(vb, struct v4l2_m2m_buffer, vb);
-	struct v4l2_m2m_queue_ctx *q_ctx;
-	unsigned long flags;
-
-	q_ctx = get_queue_ctx(m2m_ctx, vb->vb2_queue->type);
-	if (!q_ctx)
-		return;
-
-	spin_lock_irqsave(&q_ctx->rdy_spinlock, flags);
-	list_add_tail(&b->list, &q_ctx->rdy_queue);
-	q_ctx->num_rdy++;
-	spin_unlock_irqrestore(&q_ctx->rdy_spinlock, flags);
-}
-EXPORT_SYMBOL_GPL(v4l2_m2m_buf_queue);
-
diff --git a/drivers/media/video/v4l2-subdev.c b/drivers/media/video/v4l2-subdev.c
deleted file mode 100644
index 9182f81deb5b..000000000000
--- a/drivers/media/video/v4l2-subdev.c
+++ /dev/null
@@ -1,470 +0,0 @@
-/*
- * V4L2 sub-device
- *
- * Copyright (C) 2010 Nokia Corporation
- *
- * Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
- *	    Sakari Ailus <sakari.ailus@iki.fi>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#include <linux/ioctl.h>
-#include <linux/slab.h>
-#include <linux/types.h>
-#include <linux/videodev2.h>
-#include <linux/export.h>
-
-#include <media/v4l2-ctrls.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-ioctl.h>
-#include <media/v4l2-fh.h>
-#include <media/v4l2-event.h>
-
-static int subdev_fh_init(struct v4l2_subdev_fh *fh, struct v4l2_subdev *sd)
-{
-#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
-	fh->pad = kzalloc(sizeof(*fh->pad) * sd->entity.num_pads, GFP_KERNEL);
-	if (fh->pad == NULL)
-		return -ENOMEM;
-#endif
-	return 0;
-}
-
-static void subdev_fh_free(struct v4l2_subdev_fh *fh)
-{
-#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
-	kfree(fh->pad);
-	fh->pad = NULL;
-#endif
-}
-
-static int subdev_open(struct file *file)
-{
-	struct video_device *vdev = video_devdata(file);
-	struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev);
-	struct v4l2_subdev_fh *subdev_fh;
-#if defined(CONFIG_MEDIA_CONTROLLER)
-	struct media_entity *entity = NULL;
-#endif
-	int ret;
-
-	subdev_fh = kzalloc(sizeof(*subdev_fh), GFP_KERNEL);
-	if (subdev_fh == NULL)
-		return -ENOMEM;
-
-	ret = subdev_fh_init(subdev_fh, sd);
-	if (ret) {
-		kfree(subdev_fh);
-		return ret;
-	}
-
-	v4l2_fh_init(&subdev_fh->vfh, vdev);
-	v4l2_fh_add(&subdev_fh->vfh);
-	file->private_data = &subdev_fh->vfh;
-#if defined(CONFIG_MEDIA_CONTROLLER)
-	if (sd->v4l2_dev->mdev) {
-		entity = media_entity_get(&sd->entity);
-		if (!entity) {
-			ret = -EBUSY;
-			goto err;
-		}
-	}
-#endif
-
-	if (sd->internal_ops && sd->internal_ops->open) {
-		ret = sd->internal_ops->open(sd, subdev_fh);
-		if (ret < 0)
-			goto err;
-	}
-
-	return 0;
-
-err:
-#if defined(CONFIG_MEDIA_CONTROLLER)
-	if (entity)
-		media_entity_put(entity);
-#endif
-	v4l2_fh_del(&subdev_fh->vfh);
-	v4l2_fh_exit(&subdev_fh->vfh);
-	subdev_fh_free(subdev_fh);
-	kfree(subdev_fh);
-
-	return ret;
-}
-
-static int subdev_close(struct file *file)
-{
-	struct video_device *vdev = video_devdata(file);
-	struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev);
-	struct v4l2_fh *vfh = file->private_data;
-	struct v4l2_subdev_fh *subdev_fh = to_v4l2_subdev_fh(vfh);
-
-	if (sd->internal_ops && sd->internal_ops->close)
-		sd->internal_ops->close(sd, subdev_fh);
-#if defined(CONFIG_MEDIA_CONTROLLER)
-	if (sd->v4l2_dev->mdev)
-		media_entity_put(&sd->entity);
-#endif
-	v4l2_fh_del(vfh);
-	v4l2_fh_exit(vfh);
-	subdev_fh_free(subdev_fh);
-	kfree(subdev_fh);
-	file->private_data = NULL;
-
-	return 0;
-}
-
-static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg)
-{
-	struct video_device *vdev = video_devdata(file);
-	struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev);
-	struct v4l2_fh *vfh = file->private_data;
-#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
-	struct v4l2_subdev_fh *subdev_fh = to_v4l2_subdev_fh(vfh);
-#endif
-
-	switch (cmd) {
-	case VIDIOC_QUERYCTRL:
-		return v4l2_queryctrl(vfh->ctrl_handler, arg);
-
-	case VIDIOC_QUERYMENU:
-		return v4l2_querymenu(vfh->ctrl_handler, arg);
-
-	case VIDIOC_G_CTRL:
-		return v4l2_g_ctrl(vfh->ctrl_handler, arg);
-
-	case VIDIOC_S_CTRL:
-		return v4l2_s_ctrl(vfh, vfh->ctrl_handler, arg);
-
-	case VIDIOC_G_EXT_CTRLS:
-		return v4l2_g_ext_ctrls(vfh->ctrl_handler, arg);
-
-	case VIDIOC_S_EXT_CTRLS:
-		return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, arg);
-
-	case VIDIOC_TRY_EXT_CTRLS:
-		return v4l2_try_ext_ctrls(vfh->ctrl_handler, arg);
-
-	case VIDIOC_DQEVENT:
-		if (!(sd->flags & V4L2_SUBDEV_FL_HAS_EVENTS))
-			return -ENOIOCTLCMD;
-
-		return v4l2_event_dequeue(vfh, arg, file->f_flags & O_NONBLOCK);
-
-	case VIDIOC_SUBSCRIBE_EVENT:
-		return v4l2_subdev_call(sd, core, subscribe_event, vfh, arg);
-
-	case VIDIOC_UNSUBSCRIBE_EVENT:
-		return v4l2_subdev_call(sd, core, unsubscribe_event, vfh, arg);
-
-#ifdef CONFIG_VIDEO_ADV_DEBUG
-	case VIDIOC_DBG_G_REGISTER:
-	{
-		struct v4l2_dbg_register *p = arg;
-
-		if (!capable(CAP_SYS_ADMIN))
-			return -EPERM;
-		return v4l2_subdev_call(sd, core, g_register, p);
-	}
-	case VIDIOC_DBG_S_REGISTER:
-	{
-		struct v4l2_dbg_register *p = arg;
-
-		if (!capable(CAP_SYS_ADMIN))
-			return -EPERM;
-		return v4l2_subdev_call(sd, core, s_register, p);
-	}
-#endif
-
-	case VIDIOC_LOG_STATUS: {
-		int ret;
-
-		pr_info("%s: =================  START STATUS  =================\n",
-			sd->name);
-		ret = v4l2_subdev_call(sd, core, log_status);
-		pr_info("%s: ==================  END STATUS  ==================\n",
-			sd->name);
-		return ret;
-	}
-
-#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
-	case VIDIOC_SUBDEV_G_FMT: {
-		struct v4l2_subdev_format *format = arg;
-
-		if (format->which != V4L2_SUBDEV_FORMAT_TRY &&
-		    format->which != V4L2_SUBDEV_FORMAT_ACTIVE)
-			return -EINVAL;
-
-		if (format->pad >= sd->entity.num_pads)
-			return -EINVAL;
-
-		return v4l2_subdev_call(sd, pad, get_fmt, subdev_fh, format);
-	}
-
-	case VIDIOC_SUBDEV_S_FMT: {
-		struct v4l2_subdev_format *format = arg;
-
-		if (format->which != V4L2_SUBDEV_FORMAT_TRY &&
-		    format->which != V4L2_SUBDEV_FORMAT_ACTIVE)
-			return -EINVAL;
-
-		if (format->pad >= sd->entity.num_pads)
-			return -EINVAL;
-
-		return v4l2_subdev_call(sd, pad, set_fmt, subdev_fh, format);
-	}
-
-	case VIDIOC_SUBDEV_G_CROP: {
-		struct v4l2_subdev_crop *crop = arg;
-		struct v4l2_subdev_selection sel;
-		int rval;
-
-		if (crop->which != V4L2_SUBDEV_FORMAT_TRY &&
-		    crop->which != V4L2_SUBDEV_FORMAT_ACTIVE)
-			return -EINVAL;
-
-		if (crop->pad >= sd->entity.num_pads)
-			return -EINVAL;
-
-		rval = v4l2_subdev_call(sd, pad, get_crop, subdev_fh, crop);
-		if (rval != -ENOIOCTLCMD)
-			return rval;
-
-		memset(&sel, 0, sizeof(sel));
-		sel.which = crop->which;
-		sel.pad = crop->pad;
-		sel.target = V4L2_SEL_TGT_CROP;
-
-		rval = v4l2_subdev_call(
-			sd, pad, get_selection, subdev_fh, &sel);
-
-		crop->rect = sel.r;
-
-		return rval;
-	}
-
-	case VIDIOC_SUBDEV_S_CROP: {
-		struct v4l2_subdev_crop *crop = arg;
-		struct v4l2_subdev_selection sel;
-		int rval;
-
-		if (crop->which != V4L2_SUBDEV_FORMAT_TRY &&
-		    crop->which != V4L2_SUBDEV_FORMAT_ACTIVE)
-			return -EINVAL;
-
-		if (crop->pad >= sd->entity.num_pads)
-			return -EINVAL;
-
-		rval = v4l2_subdev_call(sd, pad, set_crop, subdev_fh, crop);
-		if (rval != -ENOIOCTLCMD)
-			return rval;
-
-		memset(&sel, 0, sizeof(sel));
-		sel.which = crop->which;
-		sel.pad = crop->pad;
-		sel.target = V4L2_SEL_TGT_CROP;
-		sel.r = crop->rect;
-
-		rval = v4l2_subdev_call(
-			sd, pad, set_selection, subdev_fh, &sel);
-
-		crop->rect = sel.r;
-
-		return rval;
-	}
-
-	case VIDIOC_SUBDEV_ENUM_MBUS_CODE: {
-		struct v4l2_subdev_mbus_code_enum *code = arg;
-
-		if (code->pad >= sd->entity.num_pads)
-			return -EINVAL;
-
-		return v4l2_subdev_call(sd, pad, enum_mbus_code, subdev_fh,
-					code);
-	}
-
-	case VIDIOC_SUBDEV_ENUM_FRAME_SIZE: {
-		struct v4l2_subdev_frame_size_enum *fse = arg;
-
-		if (fse->pad >= sd->entity.num_pads)
-			return -EINVAL;
-
-		return v4l2_subdev_call(sd, pad, enum_frame_size, subdev_fh,
-					fse);
-	}
-
-	case VIDIOC_SUBDEV_G_FRAME_INTERVAL:
-		return v4l2_subdev_call(sd, video, g_frame_interval, arg);
-
-	case VIDIOC_SUBDEV_S_FRAME_INTERVAL:
-		return v4l2_subdev_call(sd, video, s_frame_interval, arg);
-
-	case VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL: {
-		struct v4l2_subdev_frame_interval_enum *fie = arg;
-
-		if (fie->pad >= sd->entity.num_pads)
-			return -EINVAL;
-
-		return v4l2_subdev_call(sd, pad, enum_frame_interval, subdev_fh,
-					fie);
-	}
-
-	case VIDIOC_SUBDEV_G_SELECTION: {
-		struct v4l2_subdev_selection *sel = arg;
-
-		if (sel->which != V4L2_SUBDEV_FORMAT_TRY &&
-		    sel->which != V4L2_SUBDEV_FORMAT_ACTIVE)
-			return -EINVAL;
-
-		if (sel->pad >= sd->entity.num_pads)
-			return -EINVAL;
-
-		return v4l2_subdev_call(
-			sd, pad, get_selection, subdev_fh, sel);
-	}
-
-	case VIDIOC_SUBDEV_S_SELECTION: {
-		struct v4l2_subdev_selection *sel = arg;
-
-		if (sel->which != V4L2_SUBDEV_FORMAT_TRY &&
-		    sel->which != V4L2_SUBDEV_FORMAT_ACTIVE)
-			return -EINVAL;
-
-		if (sel->pad >= sd->entity.num_pads)
-			return -EINVAL;
-
-		return v4l2_subdev_call(
-			sd, pad, set_selection, subdev_fh, sel);
-	}
-#endif
-	default:
-		return v4l2_subdev_call(sd, core, ioctl, cmd, arg);
-	}
-
-	return 0;
-}
-
-static long subdev_ioctl(struct file *file, unsigned int cmd,
-	unsigned long arg)
-{
-	return video_usercopy(file, cmd, arg, subdev_do_ioctl);
-}
-
-static unsigned int subdev_poll(struct file *file, poll_table *wait)
-{
-	struct video_device *vdev = video_devdata(file);
-	struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev);
-	struct v4l2_fh *fh = file->private_data;
-
-	if (!(sd->flags & V4L2_SUBDEV_FL_HAS_EVENTS))
-		return POLLERR;
-
-	poll_wait(file, &fh->wait, wait);
-
-	if (v4l2_event_pending(fh))
-		return POLLPRI;
-
-	return 0;
-}
-
-const struct v4l2_file_operations v4l2_subdev_fops = {
-	.owner = THIS_MODULE,
-	.open = subdev_open,
-	.unlocked_ioctl = subdev_ioctl,
-	.release = subdev_close,
-	.poll = subdev_poll,
-};
-
-#ifdef CONFIG_MEDIA_CONTROLLER
-int v4l2_subdev_link_validate_default(struct v4l2_subdev *sd,
-				      struct media_link *link,
-				      struct v4l2_subdev_format *source_fmt,
-				      struct v4l2_subdev_format *sink_fmt)
-{
-	if (source_fmt->format.width != sink_fmt->format.width
-	    || source_fmt->format.height != sink_fmt->format.height
-	    || source_fmt->format.code != sink_fmt->format.code)
-		return -EINVAL;
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(v4l2_subdev_link_validate_default);
-
-static int
-v4l2_subdev_link_validate_get_format(struct media_pad *pad,
-				     struct v4l2_subdev_format *fmt)
-{
-	switch (media_entity_type(pad->entity)) {
-	case MEDIA_ENT_T_V4L2_SUBDEV:
-		fmt->which = V4L2_SUBDEV_FORMAT_ACTIVE;
-		fmt->pad = pad->index;
-		return v4l2_subdev_call(media_entity_to_v4l2_subdev(
-						pad->entity),
-					pad, get_fmt, NULL, fmt);
-	default:
-		WARN(1, "Driver bug! Wrong media entity type %d, entity %s\n",
-		     media_entity_type(pad->entity), pad->entity->name);
-		/* Fall through */
-	case MEDIA_ENT_T_DEVNODE_V4L:
-		return -EINVAL;
-	}
-}
-
-int v4l2_subdev_link_validate(struct media_link *link)
-{
-	struct v4l2_subdev *sink;
-	struct v4l2_subdev_format sink_fmt, source_fmt;
-	int rval;
-
-	rval = v4l2_subdev_link_validate_get_format(
-		link->source, &source_fmt);
-	if (rval < 0)
-		return 0;
-
-	rval = v4l2_subdev_link_validate_get_format(
-		link->sink, &sink_fmt);
-	if (rval < 0)
-		return 0;
-
-	sink = media_entity_to_v4l2_subdev(link->sink->entity);
-
-	rval = v4l2_subdev_call(sink, pad, link_validate, link,
-				&source_fmt, &sink_fmt);
-	if (rval != -ENOIOCTLCMD)
-		return rval;
-
-	return v4l2_subdev_link_validate_default(
-		sink, link, &source_fmt, &sink_fmt);
-}
-EXPORT_SYMBOL_GPL(v4l2_subdev_link_validate);
-#endif /* CONFIG_MEDIA_CONTROLLER */
-
-void v4l2_subdev_init(struct v4l2_subdev *sd, const struct v4l2_subdev_ops *ops)
-{
-	INIT_LIST_HEAD(&sd->list);
-	BUG_ON(!ops);
-	sd->ops = ops;
-	sd->v4l2_dev = NULL;
-	sd->flags = 0;
-	sd->name[0] = '\0';
-	sd->grp_id = 0;
-	sd->dev_priv = NULL;
-	sd->host_priv = NULL;
-#if defined(CONFIG_MEDIA_CONTROLLER)
-	sd->entity.name = sd->name;
-	sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV;
-#endif
-}
-EXPORT_SYMBOL(v4l2_subdev_init);
diff --git a/drivers/media/video/videobuf-core.c b/drivers/media/video/videobuf-core.c
deleted file mode 100644
index bf7a326b1cdc..000000000000
--- a/drivers/media/video/videobuf-core.c
+++ /dev/null
@@ -1,1189 +0,0 @@
-/*
- * generic helper functions for handling video4linux capture buffers
- *
- * (c) 2007 Mauro Carvalho Chehab, <mchehab@infradead.org>
- *
- * Highly based on video-buf written originally by:
- * (c) 2001,02 Gerd Knorr <kraxel@bytesex.org>
- * (c) 2006 Mauro Carvalho Chehab, <mchehab@infradead.org>
- * (c) 2006 Ted Walther and John Sokol
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/mm.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-
-#include <media/videobuf-core.h>
-
-#define MAGIC_BUFFER 0x20070728
-#define MAGIC_CHECK(is, should)						\
-	do {								\
-		if (unlikely((is) != (should))) {			\
-			printk(KERN_ERR					\
-				"magic mismatch: %x (expected %x)\n",	\
-					is, should);			\
-			BUG();						\
-		}							\
-	} while (0)
-
-static int debug;
-module_param(debug, int, 0644);
-
-MODULE_DESCRIPTION("helper module to manage video4linux buffers");
-MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
-MODULE_LICENSE("GPL");
-
-#define dprintk(level, fmt, arg...)					\
-	do {								\
-		if (debug >= level)					\
-			printk(KERN_DEBUG "vbuf: " fmt, ## arg);	\
-	} while (0)
-
-/* --------------------------------------------------------------------- */
-
-#define CALL(q, f, arg...)						\
-	((q->int_ops->f) ? q->int_ops->f(arg) : 0)
-
-struct videobuf_buffer *videobuf_alloc_vb(struct videobuf_queue *q)
-{
-	struct videobuf_buffer *vb;
-
-	BUG_ON(q->msize < sizeof(*vb));
-
-	if (!q->int_ops || !q->int_ops->alloc_vb) {
-		printk(KERN_ERR "No specific ops defined!\n");
-		BUG();
-	}
-
-	vb = q->int_ops->alloc_vb(q->msize);
-	if (NULL != vb) {
-		init_waitqueue_head(&vb->done);
-		vb->magic = MAGIC_BUFFER;
-	}
-
-	return vb;
-}
-EXPORT_SYMBOL_GPL(videobuf_alloc_vb);
-
-static int is_state_active_or_queued(struct videobuf_queue *q, struct videobuf_buffer *vb)
-{
-	unsigned long flags;
-	bool rc;
-
-	spin_lock_irqsave(q->irqlock, flags);
-	rc = vb->state != VIDEOBUF_ACTIVE && vb->state != VIDEOBUF_QUEUED;
-	spin_unlock_irqrestore(q->irqlock, flags);
-	return rc;
-};
-
-int videobuf_waiton(struct videobuf_queue *q, struct videobuf_buffer *vb,
-		int non_blocking, int intr)
-{
-	bool is_ext_locked;
-	int ret = 0;
-
-	MAGIC_CHECK(vb->magic, MAGIC_BUFFER);
-
-	if (non_blocking) {
-		if (is_state_active_or_queued(q, vb))
-			return 0;
-		return -EAGAIN;
-	}
-
-	is_ext_locked = q->ext_lock && mutex_is_locked(q->ext_lock);
-
-	/* Release vdev lock to prevent this wait from blocking outside access to
-	   the device. */
-	if (is_ext_locked)
-		mutex_unlock(q->ext_lock);
-	if (intr)
-		ret = wait_event_interruptible(vb->done, is_state_active_or_queued(q, vb));
-	else
-		wait_event(vb->done, is_state_active_or_queued(q, vb));
-	/* Relock */
-	if (is_ext_locked)
-		mutex_lock(q->ext_lock);
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(videobuf_waiton);
-
-int videobuf_iolock(struct videobuf_queue *q, struct videobuf_buffer *vb,
-		    struct v4l2_framebuffer *fbuf)
-{
-	MAGIC_CHECK(vb->magic, MAGIC_BUFFER);
-	MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
-
-	return CALL(q, iolock, q, vb, fbuf);
-}
-EXPORT_SYMBOL_GPL(videobuf_iolock);
-
-void *videobuf_queue_to_vaddr(struct videobuf_queue *q,
-			      struct videobuf_buffer *buf)
-{
-	if (q->int_ops->vaddr)
-		return q->int_ops->vaddr(buf);
-	return NULL;
-}
-EXPORT_SYMBOL_GPL(videobuf_queue_to_vaddr);
-
-/* --------------------------------------------------------------------- */
-
-
-void videobuf_queue_core_init(struct videobuf_queue *q,
-			 const struct videobuf_queue_ops *ops,
-			 struct device *dev,
-			 spinlock_t *irqlock,
-			 enum v4l2_buf_type type,
-			 enum v4l2_field field,
-			 unsigned int msize,
-			 void *priv,
-			 struct videobuf_qtype_ops *int_ops,
-			 struct mutex *ext_lock)
-{
-	BUG_ON(!q);
-	memset(q, 0, sizeof(*q));
-	q->irqlock   = irqlock;
-	q->ext_lock  = ext_lock;
-	q->dev       = dev;
-	q->type      = type;
-	q->field     = field;
-	q->msize     = msize;
-	q->ops       = ops;
-	q->priv_data = priv;
-	q->int_ops   = int_ops;
-
-	/* All buffer operations are mandatory */
-	BUG_ON(!q->ops->buf_setup);
-	BUG_ON(!q->ops->buf_prepare);
-	BUG_ON(!q->ops->buf_queue);
-	BUG_ON(!q->ops->buf_release);
-
-	/* Lock is mandatory for queue_cancel to work */
-	BUG_ON(!irqlock);
-
-	/* Having implementations for abstract methods are mandatory */
-	BUG_ON(!q->int_ops);
-
-	mutex_init(&q->vb_lock);
-	init_waitqueue_head(&q->wait);
-	INIT_LIST_HEAD(&q->stream);
-}
-EXPORT_SYMBOL_GPL(videobuf_queue_core_init);
-
-/* Locking: Only usage in bttv unsafe find way to remove */
-int videobuf_queue_is_busy(struct videobuf_queue *q)
-{
-	int i;
-
-	MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
-
-	if (q->streaming) {
-		dprintk(1, "busy: streaming active\n");
-		return 1;
-	}
-	if (q->reading) {
-		dprintk(1, "busy: pending read #1\n");
-		return 1;
-	}
-	if (q->read_buf) {
-		dprintk(1, "busy: pending read #2\n");
-		return 1;
-	}
-	for (i = 0; i < VIDEO_MAX_FRAME; i++) {
-		if (NULL == q->bufs[i])
-			continue;
-		if (q->bufs[i]->map) {
-			dprintk(1, "busy: buffer #%d mapped\n", i);
-			return 1;
-		}
-		if (q->bufs[i]->state == VIDEOBUF_QUEUED) {
-			dprintk(1, "busy: buffer #%d queued\n", i);
-			return 1;
-		}
-		if (q->bufs[i]->state == VIDEOBUF_ACTIVE) {
-			dprintk(1, "busy: buffer #%d avtive\n", i);
-			return 1;
-		}
-	}
-	return 0;
-}
-EXPORT_SYMBOL_GPL(videobuf_queue_is_busy);
-
-/**
- * __videobuf_free() - free all the buffers and their control structures
- *
- * This function can only be called if streaming/reading is off, i.e. no buffers
- * are under control of the driver.
- */
-/* Locking: Caller holds q->vb_lock */
-static int __videobuf_free(struct videobuf_queue *q)
-{
-	int i;
-
-	dprintk(1, "%s\n", __func__);
-	if (!q)
-		return 0;
-
-	if (q->streaming || q->reading) {
-		dprintk(1, "Cannot free buffers when streaming or reading\n");
-		return -EBUSY;
-	}
-
-	MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
-
-	for (i = 0; i < VIDEO_MAX_FRAME; i++)
-		if (q->bufs[i] && q->bufs[i]->map) {
-			dprintk(1, "Cannot free mmapped buffers\n");
-			return -EBUSY;
-		}
-
-	for (i = 0; i < VIDEO_MAX_FRAME; i++) {
-		if (NULL == q->bufs[i])
-			continue;
-		q->ops->buf_release(q, q->bufs[i]);
-		kfree(q->bufs[i]);
-		q->bufs[i] = NULL;
-	}
-
-	return 0;
-}
-
-/* Locking: Caller holds q->vb_lock */
-void videobuf_queue_cancel(struct videobuf_queue *q)
-{
-	unsigned long flags = 0;
-	int i;
-
-	q->streaming = 0;
-	q->reading  = 0;
-	wake_up_interruptible_sync(&q->wait);
-
-	/* remove queued buffers from list */
-	spin_lock_irqsave(q->irqlock, flags);
-	for (i = 0; i < VIDEO_MAX_FRAME; i++) {
-		if (NULL == q->bufs[i])
-			continue;
-		if (q->bufs[i]->state == VIDEOBUF_QUEUED) {
-			list_del(&q->bufs[i]->queue);
-			q->bufs[i]->state = VIDEOBUF_ERROR;
-			wake_up_all(&q->bufs[i]->done);
-		}
-	}
-	spin_unlock_irqrestore(q->irqlock, flags);
-
-	/* free all buffers + clear queue */
-	for (i = 0; i < VIDEO_MAX_FRAME; i++) {
-		if (NULL == q->bufs[i])
-			continue;
-		q->ops->buf_release(q, q->bufs[i]);
-	}
-	INIT_LIST_HEAD(&q->stream);
-}
-EXPORT_SYMBOL_GPL(videobuf_queue_cancel);
-
-/* --------------------------------------------------------------------- */
-
-/* Locking: Caller holds q->vb_lock */
-enum v4l2_field videobuf_next_field(struct videobuf_queue *q)
-{
-	enum v4l2_field field = q->field;
-
-	BUG_ON(V4L2_FIELD_ANY == field);
-
-	if (V4L2_FIELD_ALTERNATE == field) {
-		if (V4L2_FIELD_TOP == q->last) {
-			field   = V4L2_FIELD_BOTTOM;
-			q->last = V4L2_FIELD_BOTTOM;
-		} else {
-			field   = V4L2_FIELD_TOP;
-			q->last = V4L2_FIELD_TOP;
-		}
-	}
-	return field;
-}
-EXPORT_SYMBOL_GPL(videobuf_next_field);
-
-/* Locking: Caller holds q->vb_lock */
-static void videobuf_status(struct videobuf_queue *q, struct v4l2_buffer *b,
-			    struct videobuf_buffer *vb, enum v4l2_buf_type type)
-{
-	MAGIC_CHECK(vb->magic, MAGIC_BUFFER);
-	MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
-
-	b->index    = vb->i;
-	b->type     = type;
-
-	b->memory   = vb->memory;
-	switch (b->memory) {
-	case V4L2_MEMORY_MMAP:
-		b->m.offset  = vb->boff;
-		b->length    = vb->bsize;
-		break;
-	case V4L2_MEMORY_USERPTR:
-		b->m.userptr = vb->baddr;
-		b->length    = vb->bsize;
-		break;
-	case V4L2_MEMORY_OVERLAY:
-		b->m.offset  = vb->boff;
-		break;
-	}
-
-	b->flags    = 0;
-	if (vb->map)
-		b->flags |= V4L2_BUF_FLAG_MAPPED;
-
-	switch (vb->state) {
-	case VIDEOBUF_PREPARED:
-	case VIDEOBUF_QUEUED:
-	case VIDEOBUF_ACTIVE:
-		b->flags |= V4L2_BUF_FLAG_QUEUED;
-		break;
-	case VIDEOBUF_ERROR:
-		b->flags |= V4L2_BUF_FLAG_ERROR;
-		/* fall through */
-	case VIDEOBUF_DONE:
-		b->flags |= V4L2_BUF_FLAG_DONE;
-		break;
-	case VIDEOBUF_NEEDS_INIT:
-	case VIDEOBUF_IDLE:
-		/* nothing */
-		break;
-	}
-
-	b->field     = vb->field;
-	b->timestamp = vb->ts;
-	b->bytesused = vb->size;
-	b->sequence  = vb->field_count >> 1;
-}
-
-int videobuf_mmap_free(struct videobuf_queue *q)
-{
-	int ret;
-	videobuf_queue_lock(q);
-	ret = __videobuf_free(q);
-	videobuf_queue_unlock(q);
-	return ret;
-}
-EXPORT_SYMBOL_GPL(videobuf_mmap_free);
-
-/* Locking: Caller holds q->vb_lock */
-int __videobuf_mmap_setup(struct videobuf_queue *q,
-			unsigned int bcount, unsigned int bsize,
-			enum v4l2_memory memory)
-{
-	unsigned int i;
-	int err;
-
-	MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
-
-	err = __videobuf_free(q);
-	if (0 != err)
-		return err;
-
-	/* Allocate and initialize buffers */
-	for (i = 0; i < bcount; i++) {
-		q->bufs[i] = videobuf_alloc_vb(q);
-
-		if (NULL == q->bufs[i])
-			break;
-
-		q->bufs[i]->i      = i;
-		q->bufs[i]->memory = memory;
-		q->bufs[i]->bsize  = bsize;
-		switch (memory) {
-		case V4L2_MEMORY_MMAP:
-			q->bufs[i]->boff = PAGE_ALIGN(bsize) * i;
-			break;
-		case V4L2_MEMORY_USERPTR:
-		case V4L2_MEMORY_OVERLAY:
-			/* nothing */
-			break;
-		}
-	}
-
-	if (!i)
-		return -ENOMEM;
-
-	dprintk(1, "mmap setup: %d buffers, %d bytes each\n", i, bsize);
-
-	return i;
-}
-EXPORT_SYMBOL_GPL(__videobuf_mmap_setup);
-
-int videobuf_mmap_setup(struct videobuf_queue *q,
-			unsigned int bcount, unsigned int bsize,
-			enum v4l2_memory memory)
-{
-	int ret;
-	videobuf_queue_lock(q);
-	ret = __videobuf_mmap_setup(q, bcount, bsize, memory);
-	videobuf_queue_unlock(q);
-	return ret;
-}
-EXPORT_SYMBOL_GPL(videobuf_mmap_setup);
-
-int videobuf_reqbufs(struct videobuf_queue *q,
-		 struct v4l2_requestbuffers *req)
-{
-	unsigned int size, count;
-	int retval;
-
-	if (req->count < 1) {
-		dprintk(1, "reqbufs: count invalid (%d)\n", req->count);
-		return -EINVAL;
-	}
-
-	if (req->memory != V4L2_MEMORY_MMAP     &&
-	    req->memory != V4L2_MEMORY_USERPTR  &&
-	    req->memory != V4L2_MEMORY_OVERLAY) {
-		dprintk(1, "reqbufs: memory type invalid\n");
-		return -EINVAL;
-	}
-
-	videobuf_queue_lock(q);
-	if (req->type != q->type) {
-		dprintk(1, "reqbufs: queue type invalid\n");
-		retval = -EINVAL;
-		goto done;
-	}
-
-	if (q->streaming) {
-		dprintk(1, "reqbufs: streaming already exists\n");
-		retval = -EBUSY;
-		goto done;
-	}
-	if (!list_empty(&q->stream)) {
-		dprintk(1, "reqbufs: stream running\n");
-		retval = -EBUSY;
-		goto done;
-	}
-
-	count = req->count;
-	if (count > VIDEO_MAX_FRAME)
-		count = VIDEO_MAX_FRAME;
-	size = 0;
-	q->ops->buf_setup(q, &count, &size);
-	dprintk(1, "reqbufs: bufs=%d, size=0x%x [%u pages total]\n",
-		count, size,
-		(unsigned int)((count * PAGE_ALIGN(size)) >> PAGE_SHIFT));
-
-	retval = __videobuf_mmap_setup(q, count, size, req->memory);
-	if (retval < 0) {
-		dprintk(1, "reqbufs: mmap setup returned %d\n", retval);
-		goto done;
-	}
-
-	req->count = retval;
-	retval = 0;
-
- done:
-	videobuf_queue_unlock(q);
-	return retval;
-}
-EXPORT_SYMBOL_GPL(videobuf_reqbufs);
-
-int videobuf_querybuf(struct videobuf_queue *q, struct v4l2_buffer *b)
-{
-	int ret = -EINVAL;
-
-	videobuf_queue_lock(q);
-	if (unlikely(b->type != q->type)) {
-		dprintk(1, "querybuf: Wrong type.\n");
-		goto done;
-	}
-	if (unlikely(b->index >= VIDEO_MAX_FRAME)) {
-		dprintk(1, "querybuf: index out of range.\n");
-		goto done;
-	}
-	if (unlikely(NULL == q->bufs[b->index])) {
-		dprintk(1, "querybuf: buffer is null.\n");
-		goto done;
-	}
-
-	videobuf_status(q, b, q->bufs[b->index], q->type);
-
-	ret = 0;
-done:
-	videobuf_queue_unlock(q);
-	return ret;
-}
-EXPORT_SYMBOL_GPL(videobuf_querybuf);
-
-int videobuf_qbuf(struct videobuf_queue *q, struct v4l2_buffer *b)
-{
-	struct videobuf_buffer *buf;
-	enum v4l2_field field;
-	unsigned long flags = 0;
-	int retval;
-
-	MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
-
-	if (b->memory == V4L2_MEMORY_MMAP)
-		down_read(&current->mm->mmap_sem);
-
-	videobuf_queue_lock(q);
-	retval = -EBUSY;
-	if (q->reading) {
-		dprintk(1, "qbuf: Reading running...\n");
-		goto done;
-	}
-	retval = -EINVAL;
-	if (b->type != q->type) {
-		dprintk(1, "qbuf: Wrong type.\n");
-		goto done;
-	}
-	if (b->index >= VIDEO_MAX_FRAME) {
-		dprintk(1, "qbuf: index out of range.\n");
-		goto done;
-	}
-	buf = q->bufs[b->index];
-	if (NULL == buf) {
-		dprintk(1, "qbuf: buffer is null.\n");
-		goto done;
-	}
-	MAGIC_CHECK(buf->magic, MAGIC_BUFFER);
-	if (buf->memory != b->memory) {
-		dprintk(1, "qbuf: memory type is wrong.\n");
-		goto done;
-	}
-	if (buf->state != VIDEOBUF_NEEDS_INIT && buf->state != VIDEOBUF_IDLE) {
-		dprintk(1, "qbuf: buffer is already queued or active.\n");
-		goto done;
-	}
-
-	switch (b->memory) {
-	case V4L2_MEMORY_MMAP:
-		if (0 == buf->baddr) {
-			dprintk(1, "qbuf: mmap requested "
-				   "but buffer addr is zero!\n");
-			goto done;
-		}
-		if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT
-		    || q->type == V4L2_BUF_TYPE_VBI_OUTPUT
-		    || q->type == V4L2_BUF_TYPE_SLICED_VBI_OUTPUT) {
-			buf->size = b->bytesused;
-			buf->field = b->field;
-			buf->ts = b->timestamp;
-		}
-		break;
-	case V4L2_MEMORY_USERPTR:
-		if (b->length < buf->bsize) {
-			dprintk(1, "qbuf: buffer length is not enough\n");
-			goto done;
-		}
-		if (VIDEOBUF_NEEDS_INIT != buf->state &&
-		    buf->baddr != b->m.userptr)
-			q->ops->buf_release(q, buf);
-		buf->baddr = b->m.userptr;
-		break;
-	case V4L2_MEMORY_OVERLAY:
-		buf->boff = b->m.offset;
-		break;
-	default:
-		dprintk(1, "qbuf: wrong memory type\n");
-		goto done;
-	}
-
-	dprintk(1, "qbuf: requesting next field\n");
-	field = videobuf_next_field(q);
-	retval = q->ops->buf_prepare(q, buf, field);
-	if (0 != retval) {
-		dprintk(1, "qbuf: buffer_prepare returned %d\n", retval);
-		goto done;
-	}
-
-	list_add_tail(&buf->stream, &q->stream);
-	if (q->streaming) {
-		spin_lock_irqsave(q->irqlock, flags);
-		q->ops->buf_queue(q, buf);
-		spin_unlock_irqrestore(q->irqlock, flags);
-	}
-	dprintk(1, "qbuf: succeeded\n");
-	retval = 0;
-	wake_up_interruptible_sync(&q->wait);
-
-done:
-	videobuf_queue_unlock(q);
-
-	if (b->memory == V4L2_MEMORY_MMAP)
-		up_read(&current->mm->mmap_sem);
-
-	return retval;
-}
-EXPORT_SYMBOL_GPL(videobuf_qbuf);
-
-/* Locking: Caller holds q->vb_lock */
-static int stream_next_buffer_check_queue(struct videobuf_queue *q, int noblock)
-{
-	int retval;
-
-checks:
-	if (!q->streaming) {
-		dprintk(1, "next_buffer: Not streaming\n");
-		retval = -EINVAL;
-		goto done;
-	}
-
-	if (list_empty(&q->stream)) {
-		if (noblock) {
-			retval = -EAGAIN;
-			dprintk(2, "next_buffer: no buffers to dequeue\n");
-			goto done;
-		} else {
-			dprintk(2, "next_buffer: waiting on buffer\n");
-
-			/* Drop lock to avoid deadlock with qbuf */
-			videobuf_queue_unlock(q);
-
-			/* Checking list_empty and streaming is safe without
-			 * locks because we goto checks to validate while
-			 * holding locks before proceeding */
-			retval = wait_event_interruptible(q->wait,
-				!list_empty(&q->stream) || !q->streaming);
-			videobuf_queue_lock(q);
-
-			if (retval)
-				goto done;
-
-			goto checks;
-		}
-	}
-
-	retval = 0;
-
-done:
-	return retval;
-}
-
-/* Locking: Caller holds q->vb_lock */
-static int stream_next_buffer(struct videobuf_queue *q,
-			struct videobuf_buffer **vb, int nonblocking)
-{
-	int retval;
-	struct videobuf_buffer *buf = NULL;
-
-	retval = stream_next_buffer_check_queue(q, nonblocking);
-	if (retval)
-		goto done;
-
-	buf = list_entry(q->stream.next, struct videobuf_buffer, stream);
-	retval = videobuf_waiton(q, buf, nonblocking, 1);
-	if (retval < 0)
-		goto done;
-
-	*vb = buf;
-done:
-	return retval;
-}
-
-int videobuf_dqbuf(struct videobuf_queue *q,
-		   struct v4l2_buffer *b, int nonblocking)
-{
-	struct videobuf_buffer *buf = NULL;
-	int retval;
-
-	MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
-
-	memset(b, 0, sizeof(*b));
-	videobuf_queue_lock(q);
-
-	retval = stream_next_buffer(q, &buf, nonblocking);
-	if (retval < 0) {
-		dprintk(1, "dqbuf: next_buffer error: %i\n", retval);
-		goto done;
-	}
-
-	switch (buf->state) {
-	case VIDEOBUF_ERROR:
-		dprintk(1, "dqbuf: state is error\n");
-		break;
-	case VIDEOBUF_DONE:
-		dprintk(1, "dqbuf: state is done\n");
-		break;
-	default:
-		dprintk(1, "dqbuf: state invalid\n");
-		retval = -EINVAL;
-		goto done;
-	}
-	CALL(q, sync, q, buf);
-	videobuf_status(q, b, buf, q->type);
-	list_del(&buf->stream);
-	buf->state = VIDEOBUF_IDLE;
-	b->flags &= ~V4L2_BUF_FLAG_DONE;
-done:
-	videobuf_queue_unlock(q);
-	return retval;
-}
-EXPORT_SYMBOL_GPL(videobuf_dqbuf);
-
-int videobuf_streamon(struct videobuf_queue *q)
-{
-	struct videobuf_buffer *buf;
-	unsigned long flags = 0;
-	int retval;
-
-	videobuf_queue_lock(q);
-	retval = -EBUSY;
-	if (q->reading)
-		goto done;
-	retval = 0;
-	if (q->streaming)
-		goto done;
-	q->streaming = 1;
-	spin_lock_irqsave(q->irqlock, flags);
-	list_for_each_entry(buf, &q->stream, stream)
-		if (buf->state == VIDEOBUF_PREPARED)
-			q->ops->buf_queue(q, buf);
-	spin_unlock_irqrestore(q->irqlock, flags);
-
-	wake_up_interruptible_sync(&q->wait);
-done:
-	videobuf_queue_unlock(q);
-	return retval;
-}
-EXPORT_SYMBOL_GPL(videobuf_streamon);
-
-/* Locking: Caller holds q->vb_lock */
-static int __videobuf_streamoff(struct videobuf_queue *q)
-{
-	if (!q->streaming)
-		return -EINVAL;
-
-	videobuf_queue_cancel(q);
-
-	return 0;
-}
-
-int videobuf_streamoff(struct videobuf_queue *q)
-{
-	int retval;
-
-	videobuf_queue_lock(q);
-	retval = __videobuf_streamoff(q);
-	videobuf_queue_unlock(q);
-
-	return retval;
-}
-EXPORT_SYMBOL_GPL(videobuf_streamoff);
-
-/* Locking: Caller holds q->vb_lock */
-static ssize_t videobuf_read_zerocopy(struct videobuf_queue *q,
-				      char __user *data,
-				      size_t count, loff_t *ppos)
-{
-	enum v4l2_field field;
-	unsigned long flags = 0;
-	int retval;
-
-	MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
-
-	/* setup stuff */
-	q->read_buf = videobuf_alloc_vb(q);
-	if (NULL == q->read_buf)
-		return -ENOMEM;
-
-	q->read_buf->memory = V4L2_MEMORY_USERPTR;
-	q->read_buf->baddr  = (unsigned long)data;
-	q->read_buf->bsize  = count;
-
-	field = videobuf_next_field(q);
-	retval = q->ops->buf_prepare(q, q->read_buf, field);
-	if (0 != retval)
-		goto done;
-
-	/* start capture & wait */
-	spin_lock_irqsave(q->irqlock, flags);
-	q->ops->buf_queue(q, q->read_buf);
-	spin_unlock_irqrestore(q->irqlock, flags);
-	retval = videobuf_waiton(q, q->read_buf, 0, 0);
-	if (0 == retval) {
-		CALL(q, sync, q, q->read_buf);
-		if (VIDEOBUF_ERROR == q->read_buf->state)
-			retval = -EIO;
-		else
-			retval = q->read_buf->size;
-	}
-
-done:
-	/* cleanup */
-	q->ops->buf_release(q, q->read_buf);
-	kfree(q->read_buf);
-	q->read_buf = NULL;
-	return retval;
-}
-
-static int __videobuf_copy_to_user(struct videobuf_queue *q,
-				   struct videobuf_buffer *buf,
-				   char __user *data, size_t count,
-				   int nonblocking)
-{
-	void *vaddr = CALL(q, vaddr, buf);
-
-	/* copy to userspace */
-	if (count > buf->size - q->read_off)
-		count = buf->size - q->read_off;
-
-	if (copy_to_user(data, vaddr + q->read_off, count))
-		return -EFAULT;
-
-	return count;
-}
-
-static int __videobuf_copy_stream(struct videobuf_queue *q,
-				  struct videobuf_buffer *buf,
-				  char __user *data, size_t count, size_t pos,
-				  int vbihack, int nonblocking)
-{
-	unsigned int *fc = CALL(q, vaddr, buf);
-
-	if (vbihack) {
-		/* dirty, undocumented hack -- pass the frame counter
-			* within the last four bytes of each vbi data block.
-			* We need that one to maintain backward compatibility
-			* to all vbi decoding software out there ... */
-		fc += (buf->size >> 2) - 1;
-		*fc = buf->field_count >> 1;
-		dprintk(1, "vbihack: %d\n", *fc);
-	}
-
-	/* copy stuff using the common method */
-	count = __videobuf_copy_to_user(q, buf, data, count, nonblocking);
-
-	if ((count == -EFAULT) && (pos == 0))
-		return -EFAULT;
-
-	return count;
-}
-
-ssize_t videobuf_read_one(struct videobuf_queue *q,
-			  char __user *data, size_t count, loff_t *ppos,
-			  int nonblocking)
-{
-	enum v4l2_field field;
-	unsigned long flags = 0;
-	unsigned size = 0, nbufs = 1;
-	int retval;
-
-	MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
-
-	videobuf_queue_lock(q);
-
-	q->ops->buf_setup(q, &nbufs, &size);
-
-	if (NULL == q->read_buf  &&
-	    count >= size        &&
-	    !nonblocking) {
-		retval = videobuf_read_zerocopy(q, data, count, ppos);
-		if (retval >= 0  ||  retval == -EIO)
-			/* ok, all done */
-			goto done;
-		/* fallback to kernel bounce buffer on failures */
-	}
-
-	if (NULL == q->read_buf) {
-		/* need to capture a new frame */
-		retval = -ENOMEM;
-		q->read_buf = videobuf_alloc_vb(q);
-
-		dprintk(1, "video alloc=0x%p\n", q->read_buf);
-		if (NULL == q->read_buf)
-			goto done;
-		q->read_buf->memory = V4L2_MEMORY_USERPTR;
-		q->read_buf->bsize = count; /* preferred size */
-		field = videobuf_next_field(q);
-		retval = q->ops->buf_prepare(q, q->read_buf, field);
-
-		if (0 != retval) {
-			kfree(q->read_buf);
-			q->read_buf = NULL;
-			goto done;
-		}
-
-		spin_lock_irqsave(q->irqlock, flags);
-		q->ops->buf_queue(q, q->read_buf);
-		spin_unlock_irqrestore(q->irqlock, flags);
-
-		q->read_off = 0;
-	}
-
-	/* wait until capture is done */
-	retval = videobuf_waiton(q, q->read_buf, nonblocking, 1);
-	if (0 != retval)
-		goto done;
-
-	CALL(q, sync, q, q->read_buf);
-
-	if (VIDEOBUF_ERROR == q->read_buf->state) {
-		/* catch I/O errors */
-		q->ops->buf_release(q, q->read_buf);
-		kfree(q->read_buf);
-		q->read_buf = NULL;
-		retval = -EIO;
-		goto done;
-	}
-
-	/* Copy to userspace */
-	retval = __videobuf_copy_to_user(q, q->read_buf, data, count, nonblocking);
-	if (retval < 0)
-		goto done;
-
-	q->read_off += retval;
-	if (q->read_off == q->read_buf->size) {
-		/* all data copied, cleanup */
-		q->ops->buf_release(q, q->read_buf);
-		kfree(q->read_buf);
-		q->read_buf = NULL;
-	}
-
-done:
-	videobuf_queue_unlock(q);
-	return retval;
-}
-EXPORT_SYMBOL_GPL(videobuf_read_one);
-
-/* Locking: Caller holds q->vb_lock */
-static int __videobuf_read_start(struct videobuf_queue *q)
-{
-	enum v4l2_field field;
-	unsigned long flags = 0;
-	unsigned int count = 0, size = 0;
-	int err, i;
-
-	q->ops->buf_setup(q, &count, &size);
-	if (count < 2)
-		count = 2;
-	if (count > VIDEO_MAX_FRAME)
-		count = VIDEO_MAX_FRAME;
-	size = PAGE_ALIGN(size);
-
-	err = __videobuf_mmap_setup(q, count, size, V4L2_MEMORY_USERPTR);
-	if (err < 0)
-		return err;
-
-	count = err;
-
-	for (i = 0; i < count; i++) {
-		field = videobuf_next_field(q);
-		err = q->ops->buf_prepare(q, q->bufs[i], field);
-		if (err)
-			return err;
-		list_add_tail(&q->bufs[i]->stream, &q->stream);
-	}
-	spin_lock_irqsave(q->irqlock, flags);
-	for (i = 0; i < count; i++)
-		q->ops->buf_queue(q, q->bufs[i]);
-	spin_unlock_irqrestore(q->irqlock, flags);
-	q->reading = 1;
-	return 0;
-}
-
-static void __videobuf_read_stop(struct videobuf_queue *q)
-{
-	int i;
-
-	videobuf_queue_cancel(q);
-	__videobuf_free(q);
-	INIT_LIST_HEAD(&q->stream);
-	for (i = 0; i < VIDEO_MAX_FRAME; i++) {
-		if (NULL == q->bufs[i])
-			continue;
-		kfree(q->bufs[i]);
-		q->bufs[i] = NULL;
-	}
-	q->read_buf = NULL;
-}
-
-int videobuf_read_start(struct videobuf_queue *q)
-{
-	int rc;
-
-	videobuf_queue_lock(q);
-	rc = __videobuf_read_start(q);
-	videobuf_queue_unlock(q);
-
-	return rc;
-}
-EXPORT_SYMBOL_GPL(videobuf_read_start);
-
-void videobuf_read_stop(struct videobuf_queue *q)
-{
-	videobuf_queue_lock(q);
-	__videobuf_read_stop(q);
-	videobuf_queue_unlock(q);
-}
-EXPORT_SYMBOL_GPL(videobuf_read_stop);
-
-void videobuf_stop(struct videobuf_queue *q)
-{
-	videobuf_queue_lock(q);
-
-	if (q->streaming)
-		__videobuf_streamoff(q);
-
-	if (q->reading)
-		__videobuf_read_stop(q);
-
-	videobuf_queue_unlock(q);
-}
-EXPORT_SYMBOL_GPL(videobuf_stop);
-
-ssize_t videobuf_read_stream(struct videobuf_queue *q,
-			     char __user *data, size_t count, loff_t *ppos,
-			     int vbihack, int nonblocking)
-{
-	int rc, retval;
-	unsigned long flags = 0;
-
-	MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
-
-	dprintk(2, "%s\n", __func__);
-	videobuf_queue_lock(q);
-	retval = -EBUSY;
-	if (q->streaming)
-		goto done;
-	if (!q->reading) {
-		retval = __videobuf_read_start(q);
-		if (retval < 0)
-			goto done;
-	}
-
-	retval = 0;
-	while (count > 0) {
-		/* get / wait for data */
-		if (NULL == q->read_buf) {
-			q->read_buf = list_entry(q->stream.next,
-						 struct videobuf_buffer,
-						 stream);
-			list_del(&q->read_buf->stream);
-			q->read_off = 0;
-		}
-		rc = videobuf_waiton(q, q->read_buf, nonblocking, 1);
-		if (rc < 0) {
-			if (0 == retval)
-				retval = rc;
-			break;
-		}
-
-		if (q->read_buf->state == VIDEOBUF_DONE) {
-			rc = __videobuf_copy_stream(q, q->read_buf, data + retval, count,
-					retval, vbihack, nonblocking);
-			if (rc < 0) {
-				retval = rc;
-				break;
-			}
-			retval      += rc;
-			count       -= rc;
-			q->read_off += rc;
-		} else {
-			/* some error */
-			q->read_off = q->read_buf->size;
-			if (0 == retval)
-				retval = -EIO;
-		}
-
-		/* requeue buffer when done with copying */
-		if (q->read_off == q->read_buf->size) {
-			list_add_tail(&q->read_buf->stream,
-				      &q->stream);
-			spin_lock_irqsave(q->irqlock, flags);
-			q->ops->buf_queue(q, q->read_buf);
-			spin_unlock_irqrestore(q->irqlock, flags);
-			q->read_buf = NULL;
-		}
-		if (retval < 0)
-			break;
-	}
-
-done:
-	videobuf_queue_unlock(q);
-	return retval;
-}
-EXPORT_SYMBOL_GPL(videobuf_read_stream);
-
-unsigned int videobuf_poll_stream(struct file *file,
-				  struct videobuf_queue *q,
-				  poll_table *wait)
-{
-	unsigned long req_events = poll_requested_events(wait);
-	struct videobuf_buffer *buf = NULL;
-	unsigned int rc = 0;
-
-	videobuf_queue_lock(q);
-	if (q->streaming) {
-		if (!list_empty(&q->stream))
-			buf = list_entry(q->stream.next,
-					 struct videobuf_buffer, stream);
-	} else if (req_events & (POLLIN | POLLRDNORM)) {
-		if (!q->reading)
-			__videobuf_read_start(q);
-		if (!q->reading) {
-			rc = POLLERR;
-		} else if (NULL == q->read_buf) {
-			q->read_buf = list_entry(q->stream.next,
-						 struct videobuf_buffer,
-						 stream);
-			list_del(&q->read_buf->stream);
-			q->read_off = 0;
-		}
-		buf = q->read_buf;
-	}
-	if (!buf)
-		rc = POLLERR;
-
-	if (0 == rc) {
-		poll_wait(file, &buf->done, wait);
-		if (buf->state == VIDEOBUF_DONE ||
-		    buf->state == VIDEOBUF_ERROR) {
-			switch (q->type) {
-			case V4L2_BUF_TYPE_VIDEO_OUTPUT:
-			case V4L2_BUF_TYPE_VBI_OUTPUT:
-			case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
-				rc = POLLOUT | POLLWRNORM;
-				break;
-			default:
-				rc = POLLIN | POLLRDNORM;
-				break;
-			}
-		}
-	}
-	videobuf_queue_unlock(q);
-	return rc;
-}
-EXPORT_SYMBOL_GPL(videobuf_poll_stream);
-
-int videobuf_mmap_mapper(struct videobuf_queue *q, struct vm_area_struct *vma)
-{
-	int rc = -EINVAL;
-	int i;
-
-	MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
-
-	if (!(vma->vm_flags & VM_WRITE) || !(vma->vm_flags & VM_SHARED)) {
-		dprintk(1, "mmap appl bug: PROT_WRITE and MAP_SHARED are required\n");
-		return -EINVAL;
-	}
-
-	videobuf_queue_lock(q);
-	for (i = 0; i < VIDEO_MAX_FRAME; i++) {
-		struct videobuf_buffer *buf = q->bufs[i];
-
-		if (buf && buf->memory == V4L2_MEMORY_MMAP &&
-				buf->boff == (vma->vm_pgoff << PAGE_SHIFT)) {
-			rc = CALL(q, mmap_mapper, q, buf, vma);
-			break;
-		}
-	}
-	videobuf_queue_unlock(q);
-
-	return rc;
-}
-EXPORT_SYMBOL_GPL(videobuf_mmap_mapper);
diff --git a/drivers/media/video/videobuf-dma-contig.c b/drivers/media/video/videobuf-dma-contig.c
deleted file mode 100644
index 3a43ba0959bf..000000000000
--- a/drivers/media/video/videobuf-dma-contig.c
+++ /dev/null
@@ -1,510 +0,0 @@
-/*
- * helper functions for physically contiguous capture buffers
- *
- * The functions support hardware lacking scatter gather support
- * (i.e. the buffers must be linear in physical memory)
- *
- * Copyright (c) 2008 Magnus Damm
- *
- * Based on videobuf-vmalloc.c,
- * (c) 2007 Mauro Carvalho Chehab, <mchehab@infradead.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/mm.h>
-#include <linux/pagemap.h>
-#include <linux/dma-mapping.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <media/videobuf-dma-contig.h>
-
-struct videobuf_dma_contig_memory {
-	u32 magic;
-	void *vaddr;
-	dma_addr_t dma_handle;
-	bool cached;
-	unsigned long size;
-};
-
-#define MAGIC_DC_MEM 0x0733ac61
-#define MAGIC_CHECK(is, should)						    \
-	if (unlikely((is) != (should)))	{				    \
-		pr_err("magic mismatch: %x expected %x\n", (is), (should)); \
-		BUG();							    \
-	}
-
-static int __videobuf_dc_alloc(struct device *dev,
-			       struct videobuf_dma_contig_memory *mem,
-			       unsigned long size, gfp_t flags)
-{
-	mem->size = size;
-	if (mem->cached) {
-		mem->vaddr = alloc_pages_exact(mem->size, flags | GFP_DMA);
-		if (mem->vaddr) {
-			int err;
-
-			mem->dma_handle = dma_map_single(dev, mem->vaddr,
-							 mem->size,
-							 DMA_FROM_DEVICE);
-			err = dma_mapping_error(dev, mem->dma_handle);
-			if (err) {
-				dev_err(dev, "dma_map_single failed\n");
-
-				free_pages_exact(mem->vaddr, mem->size);
-				mem->vaddr = NULL;
-				return err;
-			}
-		}
-	} else
-		mem->vaddr = dma_alloc_coherent(dev, mem->size,
-						&mem->dma_handle, flags);
-
-	if (!mem->vaddr) {
-		dev_err(dev, "memory alloc size %ld failed\n", mem->size);
-		return -ENOMEM;
-	}
-
-	dev_dbg(dev, "dma mapped data is at %p (%ld)\n", mem->vaddr, mem->size);
-
-	return 0;
-}
-
-static void __videobuf_dc_free(struct device *dev,
-			       struct videobuf_dma_contig_memory *mem)
-{
-	if (mem->cached) {
-		if (!mem->vaddr)
-			return;
-		dma_unmap_single(dev, mem->dma_handle, mem->size,
-				 DMA_FROM_DEVICE);
-		free_pages_exact(mem->vaddr, mem->size);
-	} else
-		dma_free_coherent(dev, mem->size, mem->vaddr, mem->dma_handle);
-
-	mem->vaddr = NULL;
-}
-
-static void videobuf_vm_open(struct vm_area_struct *vma)
-{
-	struct videobuf_mapping *map = vma->vm_private_data;
-
-	dev_dbg(map->q->dev, "vm_open %p [count=%u,vma=%08lx-%08lx]\n",
-		map, map->count, vma->vm_start, vma->vm_end);
-
-	map->count++;
-}
-
-static void videobuf_vm_close(struct vm_area_struct *vma)
-{
-	struct videobuf_mapping *map = vma->vm_private_data;
-	struct videobuf_queue *q = map->q;
-	int i;
-
-	dev_dbg(q->dev, "vm_close %p [count=%u,vma=%08lx-%08lx]\n",
-		map, map->count, vma->vm_start, vma->vm_end);
-
-	map->count--;
-	if (0 == map->count) {
-		struct videobuf_dma_contig_memory *mem;
-
-		dev_dbg(q->dev, "munmap %p q=%p\n", map, q);
-		videobuf_queue_lock(q);
-
-		/* We need first to cancel streams, before unmapping */
-		if (q->streaming)
-			videobuf_queue_cancel(q);
-
-		for (i = 0; i < VIDEO_MAX_FRAME; i++) {
-			if (NULL == q->bufs[i])
-				continue;
-
-			if (q->bufs[i]->map != map)
-				continue;
-
-			mem = q->bufs[i]->priv;
-			if (mem) {
-				/* This callback is called only if kernel has
-				   allocated memory and this memory is mmapped.
-				   In this case, memory should be freed,
-				   in order to do memory unmap.
-				 */
-
-				MAGIC_CHECK(mem->magic, MAGIC_DC_MEM);
-
-				/* vfree is not atomic - can't be
-				   called with IRQ's disabled
-				 */
-				dev_dbg(q->dev, "buf[%d] freeing %p\n",
-					i, mem->vaddr);
-
-				__videobuf_dc_free(q->dev, mem);
-				mem->vaddr = NULL;
-			}
-
-			q->bufs[i]->map = NULL;
-			q->bufs[i]->baddr = 0;
-		}
-
-		kfree(map);
-
-		videobuf_queue_unlock(q);
-	}
-}
-
-static const struct vm_operations_struct videobuf_vm_ops = {
-	.open	= videobuf_vm_open,
-	.close	= videobuf_vm_close,
-};
-
-/**
- * videobuf_dma_contig_user_put() - reset pointer to user space buffer
- * @mem: per-buffer private videobuf-dma-contig data
- *
- * This function resets the user space pointer
- */
-static void videobuf_dma_contig_user_put(struct videobuf_dma_contig_memory *mem)
-{
-	mem->dma_handle = 0;
-	mem->size = 0;
-}
-
-/**
- * videobuf_dma_contig_user_get() - setup user space memory pointer
- * @mem: per-buffer private videobuf-dma-contig data
- * @vb: video buffer to map
- *
- * This function validates and sets up a pointer to user space memory.
- * Only physically contiguous pfn-mapped memory is accepted.
- *
- * Returns 0 if successful.
- */
-static int videobuf_dma_contig_user_get(struct videobuf_dma_contig_memory *mem,
-					struct videobuf_buffer *vb)
-{
-	struct mm_struct *mm = current->mm;
-	struct vm_area_struct *vma;
-	unsigned long prev_pfn, this_pfn;
-	unsigned long pages_done, user_address;
-	unsigned int offset;
-	int ret;
-
-	offset = vb->baddr & ~PAGE_MASK;
-	mem->size = PAGE_ALIGN(vb->size + offset);
-	ret = -EINVAL;
-
-	down_read(&mm->mmap_sem);
-
-	vma = find_vma(mm, vb->baddr);
-	if (!vma)
-		goto out_up;
-
-	if ((vb->baddr + mem->size) > vma->vm_end)
-		goto out_up;
-
-	pages_done = 0;
-	prev_pfn = 0; /* kill warning */
-	user_address = vb->baddr;
-
-	while (pages_done < (mem->size >> PAGE_SHIFT)) {
-		ret = follow_pfn(vma, user_address, &this_pfn);
-		if (ret)
-			break;
-
-		if (pages_done == 0)
-			mem->dma_handle = (this_pfn << PAGE_SHIFT) + offset;
-		else if (this_pfn != (prev_pfn + 1))
-			ret = -EFAULT;
-
-		if (ret)
-			break;
-
-		prev_pfn = this_pfn;
-		user_address += PAGE_SIZE;
-		pages_done++;
-	}
-
-out_up:
-	up_read(&current->mm->mmap_sem);
-
-	return ret;
-}
-
-static struct videobuf_buffer *__videobuf_alloc_vb(size_t size, bool cached)
-{
-	struct videobuf_dma_contig_memory *mem;
-	struct videobuf_buffer *vb;
-
-	vb = kzalloc(size + sizeof(*mem), GFP_KERNEL);
-	if (vb) {
-		vb->priv = ((char *)vb) + size;
-		mem = vb->priv;
-		mem->magic = MAGIC_DC_MEM;
-		mem->cached = cached;
-	}
-
-	return vb;
-}
-
-static struct videobuf_buffer *__videobuf_alloc_uncached(size_t size)
-{
-	return __videobuf_alloc_vb(size, false);
-}
-
-static struct videobuf_buffer *__videobuf_alloc_cached(size_t size)
-{
-	return __videobuf_alloc_vb(size, true);
-}
-
-static void *__videobuf_to_vaddr(struct videobuf_buffer *buf)
-{
-	struct videobuf_dma_contig_memory *mem = buf->priv;
-
-	BUG_ON(!mem);
-	MAGIC_CHECK(mem->magic, MAGIC_DC_MEM);
-
-	return mem->vaddr;
-}
-
-static int __videobuf_iolock(struct videobuf_queue *q,
-			     struct videobuf_buffer *vb,
-			     struct v4l2_framebuffer *fbuf)
-{
-	struct videobuf_dma_contig_memory *mem = vb->priv;
-
-	BUG_ON(!mem);
-	MAGIC_CHECK(mem->magic, MAGIC_DC_MEM);
-
-	switch (vb->memory) {
-	case V4L2_MEMORY_MMAP:
-		dev_dbg(q->dev, "%s memory method MMAP\n", __func__);
-
-		/* All handling should be done by __videobuf_mmap_mapper() */
-		if (!mem->vaddr) {
-			dev_err(q->dev, "memory is not alloced/mmapped.\n");
-			return -EINVAL;
-		}
-		break;
-	case V4L2_MEMORY_USERPTR:
-		dev_dbg(q->dev, "%s memory method USERPTR\n", __func__);
-
-		/* handle pointer from user space */
-		if (vb->baddr)
-			return videobuf_dma_contig_user_get(mem, vb);
-
-		/* allocate memory for the read() method */
-		if (__videobuf_dc_alloc(q->dev, mem, PAGE_ALIGN(vb->size),
-					GFP_KERNEL))
-			return -ENOMEM;
-		break;
-	case V4L2_MEMORY_OVERLAY:
-	default:
-		dev_dbg(q->dev, "%s memory method OVERLAY/unknown\n", __func__);
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static int __videobuf_sync(struct videobuf_queue *q,
-			   struct videobuf_buffer *buf)
-{
-	struct videobuf_dma_contig_memory *mem = buf->priv;
-	BUG_ON(!mem);
-	MAGIC_CHECK(mem->magic, MAGIC_DC_MEM);
-
-	dma_sync_single_for_cpu(q->dev, mem->dma_handle, mem->size,
-				DMA_FROM_DEVICE);
-
-	return 0;
-}
-
-static int __videobuf_mmap_mapper(struct videobuf_queue *q,
-				  struct videobuf_buffer *buf,
-				  struct vm_area_struct *vma)
-{
-	struct videobuf_dma_contig_memory *mem;
-	struct videobuf_mapping *map;
-	int retval;
-	unsigned long size;
-	unsigned long pos, start = vma->vm_start;
-	struct page *page;
-
-	dev_dbg(q->dev, "%s\n", __func__);
-
-	/* create mapping + update buffer list */
-	map = kzalloc(sizeof(struct videobuf_mapping), GFP_KERNEL);
-	if (!map)
-		return -ENOMEM;
-
-	buf->map = map;
-	map->q = q;
-
-	buf->baddr = vma->vm_start;
-
-	mem = buf->priv;
-	BUG_ON(!mem);
-	MAGIC_CHECK(mem->magic, MAGIC_DC_MEM);
-
-	if (__videobuf_dc_alloc(q->dev, mem, PAGE_ALIGN(buf->bsize),
-				GFP_KERNEL | __GFP_COMP))
-		goto error;
-
-	/* Try to remap memory */
-
-	size = vma->vm_end - vma->vm_start;
-	size = (size < mem->size) ? size : mem->size;
-
-	if (!mem->cached) {
-		vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
-		retval = remap_pfn_range(vma, vma->vm_start,
-			 mem->dma_handle >> PAGE_SHIFT,
-				 size, vma->vm_page_prot);
-		if (retval) {
-			dev_err(q->dev, "mmap: remap failed with error %d. ",
-								retval);
-			dma_free_coherent(q->dev, mem->size,
-					mem->vaddr, mem->dma_handle);
-			goto error;
-		}
-	} else {
-		pos = (unsigned long)mem->vaddr;
-
-		while (size > 0) {
-			page = virt_to_page((void *)pos);
-			if (NULL == page) {
-				dev_err(q->dev, "mmap: virt_to_page failed\n");
-				__videobuf_dc_free(q->dev, mem);
-				goto error;
-			}
-			retval = vm_insert_page(vma, start, page);
-			if (retval) {
-				dev_err(q->dev, "mmap: insert failed with error %d\n",
-					retval);
-				__videobuf_dc_free(q->dev, mem);
-				goto error;
-			}
-			start += PAGE_SIZE;
-			pos += PAGE_SIZE;
-
-			if (size > PAGE_SIZE)
-				size -= PAGE_SIZE;
-			else
-				size = 0;
-		}
-	}
-
-	vma->vm_ops = &videobuf_vm_ops;
-	vma->vm_flags |= VM_DONTEXPAND;
-	vma->vm_private_data = map;
-
-	dev_dbg(q->dev, "mmap %p: q=%p %08lx-%08lx (%lx) pgoff %08lx buf %d\n",
-		map, q, vma->vm_start, vma->vm_end,
-		(long int)buf->bsize, vma->vm_pgoff, buf->i);
-
-	videobuf_vm_open(vma);
-
-	return 0;
-
-error:
-	kfree(map);
-	return -ENOMEM;
-}
-
-static struct videobuf_qtype_ops qops = {
-	.magic		= MAGIC_QTYPE_OPS,
-	.alloc_vb	= __videobuf_alloc_uncached,
-	.iolock		= __videobuf_iolock,
-	.mmap_mapper	= __videobuf_mmap_mapper,
-	.vaddr		= __videobuf_to_vaddr,
-};
-
-static struct videobuf_qtype_ops qops_cached = {
-	.magic		= MAGIC_QTYPE_OPS,
-	.alloc_vb	= __videobuf_alloc_cached,
-	.iolock		= __videobuf_iolock,
-	.sync		= __videobuf_sync,
-	.mmap_mapper	= __videobuf_mmap_mapper,
-	.vaddr		= __videobuf_to_vaddr,
-};
-
-void videobuf_queue_dma_contig_init(struct videobuf_queue *q,
-				    const struct videobuf_queue_ops *ops,
-				    struct device *dev,
-				    spinlock_t *irqlock,
-				    enum v4l2_buf_type type,
-				    enum v4l2_field field,
-				    unsigned int msize,
-				    void *priv,
-				    struct mutex *ext_lock)
-{
-	videobuf_queue_core_init(q, ops, dev, irqlock, type, field, msize,
-				 priv, &qops, ext_lock);
-}
-EXPORT_SYMBOL_GPL(videobuf_queue_dma_contig_init);
-
-void videobuf_queue_dma_contig_init_cached(struct videobuf_queue *q,
-					   const struct videobuf_queue_ops *ops,
-					   struct device *dev,
-					   spinlock_t *irqlock,
-					   enum v4l2_buf_type type,
-					   enum v4l2_field field,
-					   unsigned int msize,
-					   void *priv, struct mutex *ext_lock)
-{
-	videobuf_queue_core_init(q, ops, dev, irqlock, type, field, msize,
-				 priv, &qops_cached, ext_lock);
-}
-EXPORT_SYMBOL_GPL(videobuf_queue_dma_contig_init_cached);
-
-dma_addr_t videobuf_to_dma_contig(struct videobuf_buffer *buf)
-{
-	struct videobuf_dma_contig_memory *mem = buf->priv;
-
-	BUG_ON(!mem);
-	MAGIC_CHECK(mem->magic, MAGIC_DC_MEM);
-
-	return mem->dma_handle;
-}
-EXPORT_SYMBOL_GPL(videobuf_to_dma_contig);
-
-void videobuf_dma_contig_free(struct videobuf_queue *q,
-			      struct videobuf_buffer *buf)
-{
-	struct videobuf_dma_contig_memory *mem = buf->priv;
-
-	/* mmapped memory can't be freed here, otherwise mmapped region
-	   would be released, while still needed. In this case, the memory
-	   release should happen inside videobuf_vm_close().
-	   So, it should free memory only if the memory were allocated for
-	   read() operation.
-	 */
-	if (buf->memory != V4L2_MEMORY_USERPTR)
-		return;
-
-	if (!mem)
-		return;
-
-	MAGIC_CHECK(mem->magic, MAGIC_DC_MEM);
-
-	/* handle user space pointer case */
-	if (buf->baddr) {
-		videobuf_dma_contig_user_put(mem);
-		return;
-	}
-
-	/* read() method */
-	if (mem->vaddr) {
-		__videobuf_dc_free(q->dev, mem);
-		mem->vaddr = NULL;
-	}
-}
-EXPORT_SYMBOL_GPL(videobuf_dma_contig_free);
-
-MODULE_DESCRIPTION("helper module to manage video4linux dma contig buffers");
-MODULE_AUTHOR("Magnus Damm");
-MODULE_LICENSE("GPL");
diff --git a/drivers/media/video/videobuf-dma-sg.c b/drivers/media/video/videobuf-dma-sg.c
deleted file mode 100644
index f300deafd268..000000000000
--- a/drivers/media/video/videobuf-dma-sg.c
+++ /dev/null
@@ -1,633 +0,0 @@
-/*
- * helper functions for SG DMA video4linux capture buffers
- *
- * The functions expect the hardware being able to scatter gather
- * (i.e. the buffers are not linear in physical memory, but fragmented
- * into PAGE_SIZE chunks).  They also assume the driver does not need
- * to touch the video data.
- *
- * (c) 2007 Mauro Carvalho Chehab, <mchehab@infradead.org>
- *
- * Highly based on video-buf written originally by:
- * (c) 2001,02 Gerd Knorr <kraxel@bytesex.org>
- * (c) 2006 Mauro Carvalho Chehab, <mchehab@infradead.org>
- * (c) 2006 Ted Walther and John Sokol
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-
-#include <linux/dma-mapping.h>
-#include <linux/vmalloc.h>
-#include <linux/pagemap.h>
-#include <linux/scatterlist.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-
-#include <media/videobuf-dma-sg.h>
-
-#define MAGIC_DMABUF 0x19721112
-#define MAGIC_SG_MEM 0x17890714
-
-#define MAGIC_CHECK(is, should)						\
-	if (unlikely((is) != (should))) {				\
-		printk(KERN_ERR "magic mismatch: %x (expected %x)\n",	\
-				is, should);				\
-		BUG();							\
-	}
-
-static int debug;
-module_param(debug, int, 0644);
-
-MODULE_DESCRIPTION("helper module to manage video4linux dma sg buffers");
-MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
-MODULE_LICENSE("GPL");
-
-#define dprintk(level, fmt, arg...)					\
-	if (debug >= level)						\
-		printk(KERN_DEBUG "vbuf-sg: " fmt , ## arg)
-
-/* --------------------------------------------------------------------- */
-
-/*
- * Return a scatterlist for some page-aligned vmalloc()'ed memory
- * block (NULL on errors).  Memory for the scatterlist is allocated
- * using kmalloc.  The caller must free the memory.
- */
-static struct scatterlist *videobuf_vmalloc_to_sg(unsigned char *virt,
-						  int nr_pages)
-{
-	struct scatterlist *sglist;
-	struct page *pg;
-	int i;
-
-	sglist = vzalloc(nr_pages * sizeof(*sglist));
-	if (NULL == sglist)
-		return NULL;
-	sg_init_table(sglist, nr_pages);
-	for (i = 0; i < nr_pages; i++, virt += PAGE_SIZE) {
-		pg = vmalloc_to_page(virt);
-		if (NULL == pg)
-			goto err;
-		BUG_ON(PageHighMem(pg));
-		sg_set_page(&sglist[i], pg, PAGE_SIZE, 0);
-	}
-	return sglist;
-
-err:
-	vfree(sglist);
-	return NULL;
-}
-
-/*
- * Return a scatterlist for a an array of userpages (NULL on errors).
- * Memory for the scatterlist is allocated using kmalloc.  The caller
- * must free the memory.
- */
-static struct scatterlist *videobuf_pages_to_sg(struct page **pages,
-					int nr_pages, int offset, size_t size)
-{
-	struct scatterlist *sglist;
-	int i;
-
-	if (NULL == pages[0])
-		return NULL;
-	sglist = vmalloc(nr_pages * sizeof(*sglist));
-	if (NULL == sglist)
-		return NULL;
-	sg_init_table(sglist, nr_pages);
-
-	if (PageHighMem(pages[0]))
-		/* DMA to highmem pages might not work */
-		goto highmem;
-	sg_set_page(&sglist[0], pages[0],
-			min_t(size_t, PAGE_SIZE - offset, size), offset);
-	size -= min_t(size_t, PAGE_SIZE - offset, size);
-	for (i = 1; i < nr_pages; i++) {
-		if (NULL == pages[i])
-			goto nopage;
-		if (PageHighMem(pages[i]))
-			goto highmem;
-		sg_set_page(&sglist[i], pages[i], min_t(size_t, PAGE_SIZE, size), 0);
-		size -= min_t(size_t, PAGE_SIZE, size);
-	}
-	return sglist;
-
-nopage:
-	dprintk(2, "sgl: oops - no page\n");
-	vfree(sglist);
-	return NULL;
-
-highmem:
-	dprintk(2, "sgl: oops - highmem page\n");
-	vfree(sglist);
-	return NULL;
-}
-
-/* --------------------------------------------------------------------- */
-
-struct videobuf_dmabuf *videobuf_to_dma(struct videobuf_buffer *buf)
-{
-	struct videobuf_dma_sg_memory *mem = buf->priv;
-	BUG_ON(!mem);
-
-	MAGIC_CHECK(mem->magic, MAGIC_SG_MEM);
-
-	return &mem->dma;
-}
-EXPORT_SYMBOL_GPL(videobuf_to_dma);
-
-void videobuf_dma_init(struct videobuf_dmabuf *dma)
-{
-	memset(dma, 0, sizeof(*dma));
-	dma->magic = MAGIC_DMABUF;
-}
-EXPORT_SYMBOL_GPL(videobuf_dma_init);
-
-static int videobuf_dma_init_user_locked(struct videobuf_dmabuf *dma,
-			int direction, unsigned long data, unsigned long size)
-{
-	unsigned long first, last;
-	int err, rw = 0;
-
-	dma->direction = direction;
-	switch (dma->direction) {
-	case DMA_FROM_DEVICE:
-		rw = READ;
-		break;
-	case DMA_TO_DEVICE:
-		rw = WRITE;
-		break;
-	default:
-		BUG();
-	}
-
-	first = (data          & PAGE_MASK) >> PAGE_SHIFT;
-	last  = ((data+size-1) & PAGE_MASK) >> PAGE_SHIFT;
-	dma->offset = data & ~PAGE_MASK;
-	dma->size = size;
-	dma->nr_pages = last-first+1;
-	dma->pages = kmalloc(dma->nr_pages * sizeof(struct page *), GFP_KERNEL);
-	if (NULL == dma->pages)
-		return -ENOMEM;
-
-	dprintk(1, "init user [0x%lx+0x%lx => %d pages]\n",
-		data, size, dma->nr_pages);
-
-	err = get_user_pages(current, current->mm,
-			     data & PAGE_MASK, dma->nr_pages,
-			     rw == READ, 1, /* force */
-			     dma->pages, NULL);
-
-	if (err != dma->nr_pages) {
-		dma->nr_pages = (err >= 0) ? err : 0;
-		dprintk(1, "get_user_pages: err=%d [%d]\n", err, dma->nr_pages);
-		return err < 0 ? err : -EINVAL;
-	}
-	return 0;
-}
-
-int videobuf_dma_init_user(struct videobuf_dmabuf *dma, int direction,
-			   unsigned long data, unsigned long size)
-{
-	int ret;
-
-	down_read(&current->mm->mmap_sem);
-	ret = videobuf_dma_init_user_locked(dma, direction, data, size);
-	up_read(&current->mm->mmap_sem);
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(videobuf_dma_init_user);
-
-int videobuf_dma_init_kernel(struct videobuf_dmabuf *dma, int direction,
-			     int nr_pages)
-{
-	dprintk(1, "init kernel [%d pages]\n", nr_pages);
-
-	dma->direction = direction;
-	dma->vaddr = vmalloc_32(nr_pages << PAGE_SHIFT);
-	if (NULL == dma->vaddr) {
-		dprintk(1, "vmalloc_32(%d pages) failed\n", nr_pages);
-		return -ENOMEM;
-	}
-
-	dprintk(1, "vmalloc is at addr 0x%08lx, size=%d\n",
-				(unsigned long)dma->vaddr,
-				nr_pages << PAGE_SHIFT);
-
-	memset(dma->vaddr, 0, nr_pages << PAGE_SHIFT);
-	dma->nr_pages = nr_pages;
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(videobuf_dma_init_kernel);
-
-int videobuf_dma_init_overlay(struct videobuf_dmabuf *dma, int direction,
-			      dma_addr_t addr, int nr_pages)
-{
-	dprintk(1, "init overlay [%d pages @ bus 0x%lx]\n",
-		nr_pages, (unsigned long)addr);
-	dma->direction = direction;
-
-	if (0 == addr)
-		return -EINVAL;
-
-	dma->bus_addr = addr;
-	dma->nr_pages = nr_pages;
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(videobuf_dma_init_overlay);
-
-int videobuf_dma_map(struct device *dev, struct videobuf_dmabuf *dma)
-{
-	MAGIC_CHECK(dma->magic, MAGIC_DMABUF);
-	BUG_ON(0 == dma->nr_pages);
-
-	if (dma->pages) {
-		dma->sglist = videobuf_pages_to_sg(dma->pages, dma->nr_pages,
-						   dma->offset, dma->size);
-	}
-	if (dma->vaddr) {
-		dma->sglist = videobuf_vmalloc_to_sg(dma->vaddr,
-						     dma->nr_pages);
-	}
-	if (dma->bus_addr) {
-		dma->sglist = vmalloc(sizeof(*dma->sglist));
-		if (NULL != dma->sglist) {
-			dma->sglen = 1;
-			sg_dma_address(&dma->sglist[0])	= dma->bus_addr
-							& PAGE_MASK;
-			dma->sglist[0].offset = dma->bus_addr & ~PAGE_MASK;
-			sg_dma_len(&dma->sglist[0]) = dma->nr_pages * PAGE_SIZE;
-		}
-	}
-	if (NULL == dma->sglist) {
-		dprintk(1, "scatterlist is NULL\n");
-		return -ENOMEM;
-	}
-	if (!dma->bus_addr) {
-		dma->sglen = dma_map_sg(dev, dma->sglist,
-					dma->nr_pages, dma->direction);
-		if (0 == dma->sglen) {
-			printk(KERN_WARNING
-			       "%s: videobuf_map_sg failed\n", __func__);
-			vfree(dma->sglist);
-			dma->sglist = NULL;
-			dma->sglen = 0;
-			return -ENOMEM;
-		}
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(videobuf_dma_map);
-
-int videobuf_dma_unmap(struct device *dev, struct videobuf_dmabuf *dma)
-{
-	MAGIC_CHECK(dma->magic, MAGIC_DMABUF);
-
-	if (!dma->sglen)
-		return 0;
-
-	dma_unmap_sg(dev, dma->sglist, dma->sglen, dma->direction);
-
-	vfree(dma->sglist);
-	dma->sglist = NULL;
-	dma->sglen = 0;
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(videobuf_dma_unmap);
-
-int videobuf_dma_free(struct videobuf_dmabuf *dma)
-{
-	int i;
-	MAGIC_CHECK(dma->magic, MAGIC_DMABUF);
-	BUG_ON(dma->sglen);
-
-	if (dma->pages) {
-		for (i = 0; i < dma->nr_pages; i++)
-			page_cache_release(dma->pages[i]);
-		kfree(dma->pages);
-		dma->pages = NULL;
-	}
-
-	vfree(dma->vaddr);
-	dma->vaddr = NULL;
-
-	if (dma->bus_addr)
-		dma->bus_addr = 0;
-	dma->direction = DMA_NONE;
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(videobuf_dma_free);
-
-/* --------------------------------------------------------------------- */
-
-static void videobuf_vm_open(struct vm_area_struct *vma)
-{
-	struct videobuf_mapping *map = vma->vm_private_data;
-
-	dprintk(2, "vm_open %p [count=%d,vma=%08lx-%08lx]\n", map,
-		map->count, vma->vm_start, vma->vm_end);
-
-	map->count++;
-}
-
-static void videobuf_vm_close(struct vm_area_struct *vma)
-{
-	struct videobuf_mapping *map = vma->vm_private_data;
-	struct videobuf_queue *q = map->q;
-	struct videobuf_dma_sg_memory *mem;
-	int i;
-
-	dprintk(2, "vm_close %p [count=%d,vma=%08lx-%08lx]\n", map,
-		map->count, vma->vm_start, vma->vm_end);
-
-	map->count--;
-	if (0 == map->count) {
-		dprintk(1, "munmap %p q=%p\n", map, q);
-		videobuf_queue_lock(q);
-		for (i = 0; i < VIDEO_MAX_FRAME; i++) {
-			if (NULL == q->bufs[i])
-				continue;
-			mem = q->bufs[i]->priv;
-			if (!mem)
-				continue;
-
-			MAGIC_CHECK(mem->magic, MAGIC_SG_MEM);
-
-			if (q->bufs[i]->map != map)
-				continue;
-			q->bufs[i]->map   = NULL;
-			q->bufs[i]->baddr = 0;
-			q->ops->buf_release(q, q->bufs[i]);
-		}
-		videobuf_queue_unlock(q);
-		kfree(map);
-	}
-	return;
-}
-
-/*
- * Get a anonymous page for the mapping.  Make sure we can DMA to that
- * memory location with 32bit PCI devices (i.e. don't use highmem for
- * now ...).  Bounce buffers don't work very well for the data rates
- * video capture has.
- */
-static int videobuf_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
-{
-	struct page *page;
-
-	dprintk(3, "fault: fault @ %08lx [vma %08lx-%08lx]\n",
-		(unsigned long)vmf->virtual_address,
-		vma->vm_start, vma->vm_end);
-
-	page = alloc_page(GFP_USER | __GFP_DMA32);
-	if (!page)
-		return VM_FAULT_OOM;
-	clear_user_highpage(page, (unsigned long)vmf->virtual_address);
-	vmf->page = page;
-
-	return 0;
-}
-
-static const struct vm_operations_struct videobuf_vm_ops = {
-	.open	= videobuf_vm_open,
-	.close	= videobuf_vm_close,
-	.fault	= videobuf_vm_fault,
-};
-
-/* ---------------------------------------------------------------------
- * SG handlers for the generic methods
- */
-
-/* Allocated area consists on 3 parts:
-	struct video_buffer
-	struct <driver>_buffer (cx88_buffer, saa7134_buf, ...)
-	struct videobuf_dma_sg_memory
- */
-
-static struct videobuf_buffer *__videobuf_alloc_vb(size_t size)
-{
-	struct videobuf_dma_sg_memory *mem;
-	struct videobuf_buffer *vb;
-
-	vb = kzalloc(size + sizeof(*mem), GFP_KERNEL);
-	if (!vb)
-		return vb;
-
-	mem = vb->priv = ((char *)vb) + size;
-	mem->magic = MAGIC_SG_MEM;
-
-	videobuf_dma_init(&mem->dma);
-
-	dprintk(1, "%s: allocated at %p(%ld+%ld) & %p(%ld)\n",
-		__func__, vb, (long)sizeof(*vb), (long)size - sizeof(*vb),
-		mem, (long)sizeof(*mem));
-
-	return vb;
-}
-
-static void *__videobuf_to_vaddr(struct videobuf_buffer *buf)
-{
-	struct videobuf_dma_sg_memory *mem = buf->priv;
-	BUG_ON(!mem);
-
-	MAGIC_CHECK(mem->magic, MAGIC_SG_MEM);
-
-	return mem->dma.vaddr;
-}
-
-static int __videobuf_iolock(struct videobuf_queue *q,
-			     struct videobuf_buffer *vb,
-			     struct v4l2_framebuffer *fbuf)
-{
-	int err, pages;
-	dma_addr_t bus;
-	struct videobuf_dma_sg_memory *mem = vb->priv;
-	BUG_ON(!mem);
-
-	MAGIC_CHECK(mem->magic, MAGIC_SG_MEM);
-
-	switch (vb->memory) {
-	case V4L2_MEMORY_MMAP:
-	case V4L2_MEMORY_USERPTR:
-		if (0 == vb->baddr) {
-			/* no userspace addr -- kernel bounce buffer */
-			pages = PAGE_ALIGN(vb->size) >> PAGE_SHIFT;
-			err = videobuf_dma_init_kernel(&mem->dma,
-						       DMA_FROM_DEVICE,
-						       pages);
-			if (0 != err)
-				return err;
-		} else if (vb->memory == V4L2_MEMORY_USERPTR) {
-			/* dma directly to userspace */
-			err = videobuf_dma_init_user(&mem->dma,
-						     DMA_FROM_DEVICE,
-						     vb->baddr, vb->bsize);
-			if (0 != err)
-				return err;
-		} else {
-			/* NOTE: HACK: videobuf_iolock on V4L2_MEMORY_MMAP
-			buffers can only be called from videobuf_qbuf
-			we take current->mm->mmap_sem there, to prevent
-			locking inversion, so don't take it here */
-
-			err = videobuf_dma_init_user_locked(&mem->dma,
-						      DMA_FROM_DEVICE,
-						      vb->baddr, vb->bsize);
-			if (0 != err)
-				return err;
-		}
-		break;
-	case V4L2_MEMORY_OVERLAY:
-		if (NULL == fbuf)
-			return -EINVAL;
-		/* FIXME: need sanity checks for vb->boff */
-		/*
-		 * Using a double cast to avoid compiler warnings when
-		 * building for PAE. Compiler doesn't like direct casting
-		 * of a 32 bit ptr to 64 bit integer.
-		 */
-		bus   = (dma_addr_t)(unsigned long)fbuf->base + vb->boff;
-		pages = PAGE_ALIGN(vb->size) >> PAGE_SHIFT;
-		err = videobuf_dma_init_overlay(&mem->dma, DMA_FROM_DEVICE,
-						bus, pages);
-		if (0 != err)
-			return err;
-		break;
-	default:
-		BUG();
-	}
-	err = videobuf_dma_map(q->dev, &mem->dma);
-	if (0 != err)
-		return err;
-
-	return 0;
-}
-
-static int __videobuf_sync(struct videobuf_queue *q,
-			   struct videobuf_buffer *buf)
-{
-	struct videobuf_dma_sg_memory *mem = buf->priv;
-	BUG_ON(!mem || !mem->dma.sglen);
-
-	MAGIC_CHECK(mem->magic, MAGIC_SG_MEM);
-	MAGIC_CHECK(mem->dma.magic, MAGIC_DMABUF);
-
-	dma_sync_sg_for_cpu(q->dev, mem->dma.sglist,
-			    mem->dma.sglen, mem->dma.direction);
-
-	return 0;
-}
-
-static int __videobuf_mmap_mapper(struct videobuf_queue *q,
-				  struct videobuf_buffer *buf,
-				  struct vm_area_struct *vma)
-{
-	struct videobuf_dma_sg_memory *mem = buf->priv;
-	struct videobuf_mapping *map;
-	unsigned int first, last, size = 0, i;
-	int retval;
-
-	retval = -EINVAL;
-
-	BUG_ON(!mem);
-	MAGIC_CHECK(mem->magic, MAGIC_SG_MEM);
-
-	/* look for first buffer to map */
-	for (first = 0; first < VIDEO_MAX_FRAME; first++) {
-		if (buf == q->bufs[first]) {
-			size = PAGE_ALIGN(q->bufs[first]->bsize);
-			break;
-		}
-	}
-
-	/* paranoia, should never happen since buf is always valid. */
-	if (!size) {
-		dprintk(1, "mmap app bug: offset invalid [offset=0x%lx]\n",
-				(vma->vm_pgoff << PAGE_SHIFT));
-		goto done;
-	}
-
-	last = first;
-
-	/* create mapping + update buffer list */
-	retval = -ENOMEM;
-	map = kmalloc(sizeof(struct videobuf_mapping), GFP_KERNEL);
-	if (NULL == map)
-		goto done;
-
-	size = 0;
-	for (i = first; i <= last; i++) {
-		if (NULL == q->bufs[i])
-			continue;
-		q->bufs[i]->map   = map;
-		q->bufs[i]->baddr = vma->vm_start + size;
-		size += PAGE_ALIGN(q->bufs[i]->bsize);
-	}
-
-	map->count    = 1;
-	map->q        = q;
-	vma->vm_ops   = &videobuf_vm_ops;
-	vma->vm_flags |= VM_DONTEXPAND | VM_RESERVED;
-	vma->vm_flags &= ~VM_IO; /* using shared anonymous pages */
-	vma->vm_private_data = map;
-	dprintk(1, "mmap %p: q=%p %08lx-%08lx pgoff %08lx bufs %d-%d\n",
-		map, q, vma->vm_start, vma->vm_end, vma->vm_pgoff, first, last);
-	retval = 0;
-
-done:
-	return retval;
-}
-
-static struct videobuf_qtype_ops sg_ops = {
-	.magic        = MAGIC_QTYPE_OPS,
-
-	.alloc_vb     = __videobuf_alloc_vb,
-	.iolock       = __videobuf_iolock,
-	.sync         = __videobuf_sync,
-	.mmap_mapper  = __videobuf_mmap_mapper,
-	.vaddr        = __videobuf_to_vaddr,
-};
-
-void *videobuf_sg_alloc(size_t size)
-{
-	struct videobuf_queue q;
-
-	/* Required to make generic handler to call __videobuf_alloc */
-	q.int_ops = &sg_ops;
-
-	q.msize = size;
-
-	return videobuf_alloc_vb(&q);
-}
-EXPORT_SYMBOL_GPL(videobuf_sg_alloc);
-
-void videobuf_queue_sg_init(struct videobuf_queue *q,
-			 const struct videobuf_queue_ops *ops,
-			 struct device *dev,
-			 spinlock_t *irqlock,
-			 enum v4l2_buf_type type,
-			 enum v4l2_field field,
-			 unsigned int msize,
-			 void *priv,
-			 struct mutex *ext_lock)
-{
-	videobuf_queue_core_init(q, ops, dev, irqlock, type, field, msize,
-				 priv, &sg_ops, ext_lock);
-}
-EXPORT_SYMBOL_GPL(videobuf_queue_sg_init);
-
diff --git a/drivers/media/video/videobuf-dvb.c b/drivers/media/video/videobuf-dvb.c
deleted file mode 100644
index b7efa4516d36..000000000000
--- a/drivers/media/video/videobuf-dvb.c
+++ /dev/null
@@ -1,398 +0,0 @@
-/*
- *
- * some helper function for simple DVB cards which simply DMA the
- * complete transport stream and let the computer sort everything else
- * (i.e. we are using the software demux, ...).  Also uses the
- * video-buf to manage DMA buffers.
- *
- * (c) 2004 Gerd Knorr <kraxel@bytesex.org> [SUSE Labs]
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/device.h>
-#include <linux/fs.h>
-#include <linux/kthread.h>
-#include <linux/file.h>
-#include <linux/slab.h>
-
-#include <linux/freezer.h>
-
-#include <media/videobuf-core.h>
-#include <media/videobuf-dvb.h>
-
-/* ------------------------------------------------------------------ */
-
-MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
-MODULE_LICENSE("GPL");
-
-static unsigned int debug;
-module_param(debug, int, 0644);
-MODULE_PARM_DESC(debug,"enable debug messages");
-
-#define dprintk(fmt, arg...)	if (debug)			\
-	printk(KERN_DEBUG "%s/dvb: " fmt, dvb->name , ## arg)
-
-/* ------------------------------------------------------------------ */
-
-static int videobuf_dvb_thread(void *data)
-{
-	struct videobuf_dvb *dvb = data;
-	struct videobuf_buffer *buf;
-	unsigned long flags;
-	void *outp;
-
-	dprintk("dvb thread started\n");
-	set_freezable();
-	videobuf_read_start(&dvb->dvbq);
-
-	for (;;) {
-		/* fetch next buffer */
-		buf = list_entry(dvb->dvbq.stream.next,
-				 struct videobuf_buffer, stream);
-		list_del(&buf->stream);
-		videobuf_waiton(&dvb->dvbq, buf, 0, 1);
-
-		/* no more feeds left or stop_feed() asked us to quit */
-		if (0 == dvb->nfeeds)
-			break;
-		if (kthread_should_stop())
-			break;
-		try_to_freeze();
-
-		/* feed buffer data to demux */
-		outp = videobuf_queue_to_vaddr(&dvb->dvbq, buf);
-
-		if (buf->state == VIDEOBUF_DONE)
-			dvb_dmx_swfilter(&dvb->demux, outp,
-					 buf->size);
-
-		/* requeue buffer */
-		list_add_tail(&buf->stream,&dvb->dvbq.stream);
-		spin_lock_irqsave(dvb->dvbq.irqlock,flags);
-		dvb->dvbq.ops->buf_queue(&dvb->dvbq,buf);
-		spin_unlock_irqrestore(dvb->dvbq.irqlock,flags);
-	}
-
-	videobuf_read_stop(&dvb->dvbq);
-	dprintk("dvb thread stopped\n");
-
-	/* Hmm, linux becomes *very* unhappy without this ... */
-	while (!kthread_should_stop()) {
-		set_current_state(TASK_INTERRUPTIBLE);
-		schedule();
-	}
-	return 0;
-}
-
-static int videobuf_dvb_start_feed(struct dvb_demux_feed *feed)
-{
-	struct dvb_demux *demux  = feed->demux;
-	struct videobuf_dvb *dvb = demux->priv;
-	int rc;
-
-	if (!demux->dmx.frontend)
-		return -EINVAL;
-
-	mutex_lock(&dvb->lock);
-	dvb->nfeeds++;
-	rc = dvb->nfeeds;
-
-	if (NULL != dvb->thread)
-		goto out;
-	dvb->thread = kthread_run(videobuf_dvb_thread,
-				  dvb, "%s dvb", dvb->name);
-	if (IS_ERR(dvb->thread)) {
-		rc = PTR_ERR(dvb->thread);
-		dvb->thread = NULL;
-	}
-
-out:
-	mutex_unlock(&dvb->lock);
-	return rc;
-}
-
-static int videobuf_dvb_stop_feed(struct dvb_demux_feed *feed)
-{
-	struct dvb_demux *demux  = feed->demux;
-	struct videobuf_dvb *dvb = demux->priv;
-	int err = 0;
-
-	mutex_lock(&dvb->lock);
-	dvb->nfeeds--;
-	if (0 == dvb->nfeeds  &&  NULL != dvb->thread) {
-		err = kthread_stop(dvb->thread);
-		dvb->thread = NULL;
-	}
-	mutex_unlock(&dvb->lock);
-	return err;
-}
-
-static int videobuf_dvb_register_adapter(struct videobuf_dvb_frontends *fe,
-			  struct module *module,
-			  void *adapter_priv,
-			  struct device *device,
-			  char *adapter_name,
-			  short *adapter_nr,
-			  int mfe_shared)
-{
-	int result;
-
-	mutex_init(&fe->lock);
-
-	/* register adapter */
-	result = dvb_register_adapter(&fe->adapter, adapter_name, module,
-		device, adapter_nr);
-	if (result < 0) {
-		printk(KERN_WARNING "%s: dvb_register_adapter failed (errno = %d)\n",
-		       adapter_name, result);
-	}
-	fe->adapter.priv = adapter_priv;
-	fe->adapter.mfe_shared = mfe_shared;
-
-	return result;
-}
-
-static int videobuf_dvb_register_frontend(struct dvb_adapter *adapter,
-	struct videobuf_dvb *dvb)
-{
-	int result;
-
-	/* register frontend */
-	result = dvb_register_frontend(adapter, dvb->frontend);
-	if (result < 0) {
-		printk(KERN_WARNING "%s: dvb_register_frontend failed (errno = %d)\n",
-		       dvb->name, result);
-		goto fail_frontend;
-	}
-
-	/* register demux stuff */
-	dvb->demux.dmx.capabilities =
-		DMX_TS_FILTERING | DMX_SECTION_FILTERING |
-		DMX_MEMORY_BASED_FILTERING;
-	dvb->demux.priv       = dvb;
-	dvb->demux.filternum  = 256;
-	dvb->demux.feednum    = 256;
-	dvb->demux.start_feed = videobuf_dvb_start_feed;
-	dvb->demux.stop_feed  = videobuf_dvb_stop_feed;
-	result = dvb_dmx_init(&dvb->demux);
-	if (result < 0) {
-		printk(KERN_WARNING "%s: dvb_dmx_init failed (errno = %d)\n",
-		       dvb->name, result);
-		goto fail_dmx;
-	}
-
-	dvb->dmxdev.filternum    = 256;
-	dvb->dmxdev.demux        = &dvb->demux.dmx;
-	dvb->dmxdev.capabilities = 0;
-	result = dvb_dmxdev_init(&dvb->dmxdev, adapter);
-
-	if (result < 0) {
-		printk(KERN_WARNING "%s: dvb_dmxdev_init failed (errno = %d)\n",
-		       dvb->name, result);
-		goto fail_dmxdev;
-	}
-
-	dvb->fe_hw.source = DMX_FRONTEND_0;
-	result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
-	if (result < 0) {
-		printk(KERN_WARNING "%s: add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",
-		       dvb->name, result);
-		goto fail_fe_hw;
-	}
-
-	dvb->fe_mem.source = DMX_MEMORY_FE;
-	result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
-	if (result < 0) {
-		printk(KERN_WARNING "%s: add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",
-		       dvb->name, result);
-		goto fail_fe_mem;
-	}
-
-	result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
-	if (result < 0) {
-		printk(KERN_WARNING "%s: connect_frontend failed (errno = %d)\n",
-		       dvb->name, result);
-		goto fail_fe_conn;
-	}
-
-	/* register network adapter */
-	result = dvb_net_init(adapter, &dvb->net, &dvb->demux.dmx);
-	if (result < 0) {
-		printk(KERN_WARNING "%s: dvb_net_init failed (errno = %d)\n",
-		       dvb->name, result);
-		goto fail_fe_conn;
-	}
-	return 0;
-
-fail_fe_conn:
-	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
-fail_fe_mem:
-	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
-fail_fe_hw:
-	dvb_dmxdev_release(&dvb->dmxdev);
-fail_dmxdev:
-	dvb_dmx_release(&dvb->demux);
-fail_dmx:
-	dvb_unregister_frontend(dvb->frontend);
-fail_frontend:
-	dvb_frontend_detach(dvb->frontend);
-	dvb->frontend = NULL;
-
-	return result;
-}
-
-/* ------------------------------------------------------------------ */
-/* Register a single adapter and one or more frontends */
-int videobuf_dvb_register_bus(struct videobuf_dvb_frontends *f,
-			  struct module *module,
-			  void *adapter_priv,
-			  struct device *device,
-			  short *adapter_nr,
-			  int mfe_shared)
-{
-	struct list_head *list, *q;
-	struct videobuf_dvb_frontend *fe;
-	int res;
-
-	fe = videobuf_dvb_get_frontend(f, 1);
-	if (!fe) {
-		printk(KERN_WARNING "Unable to register the adapter which has no frontends\n");
-		return -EINVAL;
-	}
-
-	/* Bring up the adapter */
-	res = videobuf_dvb_register_adapter(f, module, adapter_priv, device,
-		fe->dvb.name, adapter_nr, mfe_shared);
-	if (res < 0) {
-		printk(KERN_WARNING "videobuf_dvb_register_adapter failed (errno = %d)\n", res);
-		return res;
-	}
-
-	/* Attach all of the frontends to the adapter */
-	mutex_lock(&f->lock);
-	list_for_each_safe(list, q, &f->felist) {
-		fe = list_entry(list, struct videobuf_dvb_frontend, felist);
-		res = videobuf_dvb_register_frontend(&f->adapter, &fe->dvb);
-		if (res < 0) {
-			printk(KERN_WARNING "%s: videobuf_dvb_register_frontend failed (errno = %d)\n",
-				fe->dvb.name, res);
-			goto err;
-		}
-	}
-	mutex_unlock(&f->lock);
-	return 0;
-
-err:
-	mutex_unlock(&f->lock);
-	videobuf_dvb_unregister_bus(f);
-	return res;
-}
-EXPORT_SYMBOL(videobuf_dvb_register_bus);
-
-void videobuf_dvb_unregister_bus(struct videobuf_dvb_frontends *f)
-{
-	videobuf_dvb_dealloc_frontends(f);
-
-	dvb_unregister_adapter(&f->adapter);
-}
-EXPORT_SYMBOL(videobuf_dvb_unregister_bus);
-
-struct videobuf_dvb_frontend *videobuf_dvb_get_frontend(
-	struct videobuf_dvb_frontends *f, int id)
-{
-	struct list_head *list, *q;
-	struct videobuf_dvb_frontend *fe, *ret = NULL;
-
-	mutex_lock(&f->lock);
-
-	list_for_each_safe(list, q, &f->felist) {
-		fe = list_entry(list, struct videobuf_dvb_frontend, felist);
-		if (fe->id == id) {
-			ret = fe;
-			break;
-		}
-	}
-
-	mutex_unlock(&f->lock);
-
-	return ret;
-}
-EXPORT_SYMBOL(videobuf_dvb_get_frontend);
-
-int videobuf_dvb_find_frontend(struct videobuf_dvb_frontends *f,
-	struct dvb_frontend *p)
-{
-	struct list_head *list, *q;
-	struct videobuf_dvb_frontend *fe = NULL;
-	int ret = 0;
-
-	mutex_lock(&f->lock);
-
-	list_for_each_safe(list, q, &f->felist) {
-		fe = list_entry(list, struct videobuf_dvb_frontend, felist);
-		if (fe->dvb.frontend == p) {
-			ret = fe->id;
-			break;
-		}
-	}
-
-	mutex_unlock(&f->lock);
-
-	return ret;
-}
-EXPORT_SYMBOL(videobuf_dvb_find_frontend);
-
-struct videobuf_dvb_frontend *videobuf_dvb_alloc_frontend(
-	struct videobuf_dvb_frontends *f, int id)
-{
-	struct videobuf_dvb_frontend *fe;
-
-	fe = kzalloc(sizeof(struct videobuf_dvb_frontend), GFP_KERNEL);
-	if (fe == NULL)
-		goto fail_alloc;
-
-	fe->id = id;
-	mutex_init(&fe->dvb.lock);
-
-	mutex_lock(&f->lock);
-	list_add_tail(&fe->felist, &f->felist);
-	mutex_unlock(&f->lock);
-
-fail_alloc:
-	return fe;
-}
-EXPORT_SYMBOL(videobuf_dvb_alloc_frontend);
-
-void videobuf_dvb_dealloc_frontends(struct videobuf_dvb_frontends *f)
-{
-	struct list_head *list, *q;
-	struct videobuf_dvb_frontend *fe;
-
-	mutex_lock(&f->lock);
-	list_for_each_safe(list, q, &f->felist) {
-		fe = list_entry(list, struct videobuf_dvb_frontend, felist);
-		if (fe->dvb.net.dvbdev) {
-			dvb_net_release(&fe->dvb.net);
-			fe->dvb.demux.dmx.remove_frontend(&fe->dvb.demux.dmx,
-				&fe->dvb.fe_mem);
-			fe->dvb.demux.dmx.remove_frontend(&fe->dvb.demux.dmx,
-				&fe->dvb.fe_hw);
-			dvb_dmxdev_release(&fe->dvb.dmxdev);
-			dvb_dmx_release(&fe->dvb.demux);
-			dvb_unregister_frontend(fe->dvb.frontend);
-		}
-		if (fe->dvb.frontend)
-			/* always allocated, may have been reset */
-			dvb_frontend_detach(fe->dvb.frontend);
-		list_del(list); /* remove list entry */
-		kfree(fe);	/* free frontend allocation */
-	}
-	mutex_unlock(&f->lock);
-}
-EXPORT_SYMBOL(videobuf_dvb_dealloc_frontends);
diff --git a/drivers/media/video/videobuf-vmalloc.c b/drivers/media/video/videobuf-vmalloc.c
deleted file mode 100644
index df142580e44c..000000000000
--- a/drivers/media/video/videobuf-vmalloc.c
+++ /dev/null
@@ -1,349 +0,0 @@
-/*
- * helper functions for vmalloc video4linux capture buffers
- *
- * The functions expect the hardware being able to scatter gather
- * (i.e. the buffers are not linear in physical memory, but fragmented
- * into PAGE_SIZE chunks).  They also assume the driver does not need
- * to touch the video data.
- *
- * (c) 2007 Mauro Carvalho Chehab, <mchehab@infradead.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-
-#include <linux/pci.h>
-#include <linux/vmalloc.h>
-#include <linux/pagemap.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-
-#include <media/videobuf-vmalloc.h>
-
-#define MAGIC_DMABUF   0x17760309
-#define MAGIC_VMAL_MEM 0x18221223
-
-#define MAGIC_CHECK(is, should)						\
-	if (unlikely((is) != (should))) {				\
-		printk(KERN_ERR "magic mismatch: %x (expected %x)\n",	\
-				is, should);				\
-		BUG();							\
-	}
-
-static int debug;
-module_param(debug, int, 0644);
-
-MODULE_DESCRIPTION("helper module to manage video4linux vmalloc buffers");
-MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
-MODULE_LICENSE("GPL");
-
-#define dprintk(level, fmt, arg...)					\
-	if (debug >= level)						\
-		printk(KERN_DEBUG "vbuf-vmalloc: " fmt , ## arg)
-
-
-/***************************************************************************/
-
-static void videobuf_vm_open(struct vm_area_struct *vma)
-{
-	struct videobuf_mapping *map = vma->vm_private_data;
-
-	dprintk(2, "vm_open %p [count=%u,vma=%08lx-%08lx]\n", map,
-		map->count, vma->vm_start, vma->vm_end);
-
-	map->count++;
-}
-
-static void videobuf_vm_close(struct vm_area_struct *vma)
-{
-	struct videobuf_mapping *map = vma->vm_private_data;
-	struct videobuf_queue *q = map->q;
-	int i;
-
-	dprintk(2, "vm_close %p [count=%u,vma=%08lx-%08lx]\n", map,
-		map->count, vma->vm_start, vma->vm_end);
-
-	map->count--;
-	if (0 == map->count) {
-		struct videobuf_vmalloc_memory *mem;
-
-		dprintk(1, "munmap %p q=%p\n", map, q);
-		videobuf_queue_lock(q);
-
-		/* We need first to cancel streams, before unmapping */
-		if (q->streaming)
-			videobuf_queue_cancel(q);
-
-		for (i = 0; i < VIDEO_MAX_FRAME; i++) {
-			if (NULL == q->bufs[i])
-				continue;
-
-			if (q->bufs[i]->map != map)
-				continue;
-
-			mem = q->bufs[i]->priv;
-			if (mem) {
-				/* This callback is called only if kernel has
-				   allocated memory and this memory is mmapped.
-				   In this case, memory should be freed,
-				   in order to do memory unmap.
-				 */
-
-				MAGIC_CHECK(mem->magic, MAGIC_VMAL_MEM);
-
-				/* vfree is not atomic - can't be
-				   called with IRQ's disabled
-				 */
-				dprintk(1, "%s: buf[%d] freeing (%p)\n",
-					__func__, i, mem->vaddr);
-
-				vfree(mem->vaddr);
-				mem->vaddr = NULL;
-			}
-
-			q->bufs[i]->map   = NULL;
-			q->bufs[i]->baddr = 0;
-		}
-
-		kfree(map);
-
-		videobuf_queue_unlock(q);
-	}
-
-	return;
-}
-
-static const struct vm_operations_struct videobuf_vm_ops = {
-	.open     = videobuf_vm_open,
-	.close    = videobuf_vm_close,
-};
-
-/* ---------------------------------------------------------------------
- * vmalloc handlers for the generic methods
- */
-
-/* Allocated area consists on 3 parts:
-	struct video_buffer
-	struct <driver>_buffer (cx88_buffer, saa7134_buf, ...)
-	struct videobuf_dma_sg_memory
- */
-
-static struct videobuf_buffer *__videobuf_alloc_vb(size_t size)
-{
-	struct videobuf_vmalloc_memory *mem;
-	struct videobuf_buffer *vb;
-
-	vb = kzalloc(size + sizeof(*mem), GFP_KERNEL);
-	if (!vb)
-		return vb;
-
-	mem = vb->priv = ((char *)vb) + size;
-	mem->magic = MAGIC_VMAL_MEM;
-
-	dprintk(1, "%s: allocated at %p(%ld+%ld) & %p(%ld)\n",
-		__func__, vb, (long)sizeof(*vb), (long)size - sizeof(*vb),
-		mem, (long)sizeof(*mem));
-
-	return vb;
-}
-
-static int __videobuf_iolock(struct videobuf_queue *q,
-			     struct videobuf_buffer *vb,
-			     struct v4l2_framebuffer *fbuf)
-{
-	struct videobuf_vmalloc_memory *mem = vb->priv;
-	int pages;
-
-	BUG_ON(!mem);
-
-	MAGIC_CHECK(mem->magic, MAGIC_VMAL_MEM);
-
-	switch (vb->memory) {
-	case V4L2_MEMORY_MMAP:
-		dprintk(1, "%s memory method MMAP\n", __func__);
-
-		/* All handling should be done by __videobuf_mmap_mapper() */
-		if (!mem->vaddr) {
-			printk(KERN_ERR "memory is not alloced/mmapped.\n");
-			return -EINVAL;
-		}
-		break;
-	case V4L2_MEMORY_USERPTR:
-		pages = PAGE_ALIGN(vb->size);
-
-		dprintk(1, "%s memory method USERPTR\n", __func__);
-
-		if (vb->baddr) {
-			printk(KERN_ERR "USERPTR is currently not supported\n");
-			return -EINVAL;
-		}
-
-		/* The only USERPTR currently supported is the one needed for
-		 * read() method.
-		 */
-
-		mem->vaddr = vmalloc_user(pages);
-		if (!mem->vaddr) {
-			printk(KERN_ERR "vmalloc (%d pages) failed\n", pages);
-			return -ENOMEM;
-		}
-		dprintk(1, "vmalloc is at addr %p (%d pages)\n",
-			mem->vaddr, pages);
-
-#if 0
-		int rc;
-		/* Kernel userptr is used also by read() method. In this case,
-		   there's no need to remap, since data will be copied to user
-		 */
-		if (!vb->baddr)
-			return 0;
-
-		/* FIXME: to properly support USERPTR, remap should occur.
-		   The code below won't work, since mem->vma = NULL
-		 */
-		/* Try to remap memory */
-		rc = remap_vmalloc_range(mem->vma, (void *)vb->baddr, 0);
-		if (rc < 0) {
-			printk(KERN_ERR "mmap: remap failed with error %d", rc);
-			return -ENOMEM;
-		}
-#endif
-
-		break;
-	case V4L2_MEMORY_OVERLAY:
-	default:
-		dprintk(1, "%s memory method OVERLAY/unknown\n", __func__);
-
-		/* Currently, doesn't support V4L2_MEMORY_OVERLAY */
-		printk(KERN_ERR "Memory method currently unsupported.\n");
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static int __videobuf_mmap_mapper(struct videobuf_queue *q,
-				  struct videobuf_buffer *buf,
-				  struct vm_area_struct *vma)
-{
-	struct videobuf_vmalloc_memory *mem;
-	struct videobuf_mapping *map;
-	int retval, pages;
-
-	dprintk(1, "%s\n", __func__);
-
-	/* create mapping + update buffer list */
-	map = kzalloc(sizeof(struct videobuf_mapping), GFP_KERNEL);
-	if (NULL == map)
-		return -ENOMEM;
-
-	buf->map = map;
-	map->q     = q;
-
-	buf->baddr = vma->vm_start;
-
-	mem = buf->priv;
-	BUG_ON(!mem);
-	MAGIC_CHECK(mem->magic, MAGIC_VMAL_MEM);
-
-	pages = PAGE_ALIGN(vma->vm_end - vma->vm_start);
-	mem->vaddr = vmalloc_user(pages);
-	if (!mem->vaddr) {
-		printk(KERN_ERR "vmalloc (%d pages) failed\n", pages);
-		goto error;
-	}
-	dprintk(1, "vmalloc is at addr %p (%d pages)\n", mem->vaddr, pages);
-
-	/* Try to remap memory */
-	retval = remap_vmalloc_range(vma, mem->vaddr, 0);
-	if (retval < 0) {
-		printk(KERN_ERR "mmap: remap failed with error %d. ", retval);
-		vfree(mem->vaddr);
-		goto error;
-	}
-
-	vma->vm_ops          = &videobuf_vm_ops;
-	vma->vm_flags       |= VM_DONTEXPAND | VM_RESERVED;
-	vma->vm_private_data = map;
-
-	dprintk(1, "mmap %p: q=%p %08lx-%08lx (%lx) pgoff %08lx buf %d\n",
-		map, q, vma->vm_start, vma->vm_end,
-		(long int)buf->bsize,
-		vma->vm_pgoff, buf->i);
-
-	videobuf_vm_open(vma);
-
-	return 0;
-
-error:
-	mem = NULL;
-	kfree(map);
-	return -ENOMEM;
-}
-
-static struct videobuf_qtype_ops qops = {
-	.magic        = MAGIC_QTYPE_OPS,
-
-	.alloc_vb     = __videobuf_alloc_vb,
-	.iolock       = __videobuf_iolock,
-	.mmap_mapper  = __videobuf_mmap_mapper,
-	.vaddr        = videobuf_to_vmalloc,
-};
-
-void videobuf_queue_vmalloc_init(struct videobuf_queue *q,
-			 const struct videobuf_queue_ops *ops,
-			 struct device *dev,
-			 spinlock_t *irqlock,
-			 enum v4l2_buf_type type,
-			 enum v4l2_field field,
-			 unsigned int msize,
-			 void *priv,
-			 struct mutex *ext_lock)
-{
-	videobuf_queue_core_init(q, ops, dev, irqlock, type, field, msize,
-				 priv, &qops, ext_lock);
-}
-EXPORT_SYMBOL_GPL(videobuf_queue_vmalloc_init);
-
-void *videobuf_to_vmalloc(struct videobuf_buffer *buf)
-{
-	struct videobuf_vmalloc_memory *mem = buf->priv;
-	BUG_ON(!mem);
-	MAGIC_CHECK(mem->magic, MAGIC_VMAL_MEM);
-
-	return mem->vaddr;
-}
-EXPORT_SYMBOL_GPL(videobuf_to_vmalloc);
-
-void videobuf_vmalloc_free(struct videobuf_buffer *buf)
-{
-	struct videobuf_vmalloc_memory *mem = buf->priv;
-
-	/* mmapped memory can't be freed here, otherwise mmapped region
-	   would be released, while still needed. In this case, the memory
-	   release should happen inside videobuf_vm_close().
-	   So, it should free memory only if the memory were allocated for
-	   read() operation.
-	 */
-	if ((buf->memory != V4L2_MEMORY_USERPTR) || buf->baddr)
-		return;
-
-	if (!mem)
-		return;
-
-	MAGIC_CHECK(mem->magic, MAGIC_VMAL_MEM);
-
-	vfree(mem->vaddr);
-	mem->vaddr = NULL;
-
-	return;
-}
-EXPORT_SYMBOL_GPL(videobuf_vmalloc_free);
-
diff --git a/drivers/media/video/videobuf2-core.c b/drivers/media/video/videobuf2-core.c
deleted file mode 100644
index 4da3df61901f..000000000000
--- a/drivers/media/video/videobuf2-core.c
+++ /dev/null
@@ -1,2380 +0,0 @@
-/*
- * videobuf2-core.c - V4L2 driver helper framework
- *
- * Copyright (C) 2010 Samsung Electronics
- *
- * Author: Pawel Osciak <pawel@osciak.com>
- *	   Marek Szyprowski <m.szyprowski@samsung.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation.
- */
-
-#include <linux/err.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/mm.h>
-#include <linux/poll.h>
-#include <linux/slab.h>
-#include <linux/sched.h>
-
-#include <media/v4l2-dev.h>
-#include <media/v4l2-fh.h>
-#include <media/v4l2-event.h>
-#include <media/videobuf2-core.h>
-
-static int debug;
-module_param(debug, int, 0644);
-
-#define dprintk(level, fmt, arg...)					\
-	do {								\
-		if (debug >= level)					\
-			printk(KERN_DEBUG "vb2: " fmt, ## arg);		\
-	} while (0)
-
-#define call_memop(q, op, args...)					\
-	(((q)->mem_ops->op) ?						\
-		((q)->mem_ops->op(args)) : 0)
-
-#define call_qop(q, op, args...)					\
-	(((q)->ops->op) ? ((q)->ops->op(args)) : 0)
-
-#define V4L2_BUFFER_STATE_FLAGS	(V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_QUEUED | \
-				 V4L2_BUF_FLAG_DONE | V4L2_BUF_FLAG_ERROR | \
-				 V4L2_BUF_FLAG_PREPARED)
-
-/**
- * __vb2_buf_mem_alloc() - allocate video memory for the given buffer
- */
-static int __vb2_buf_mem_alloc(struct vb2_buffer *vb)
-{
-	struct vb2_queue *q = vb->vb2_queue;
-	void *mem_priv;
-	int plane;
-
-	/* Allocate memory for all planes in this buffer */
-	for (plane = 0; plane < vb->num_planes; ++plane) {
-		mem_priv = call_memop(q, alloc, q->alloc_ctx[plane],
-				      q->plane_sizes[plane]);
-		if (IS_ERR_OR_NULL(mem_priv))
-			goto free;
-
-		/* Associate allocator private data with this plane */
-		vb->planes[plane].mem_priv = mem_priv;
-		vb->v4l2_planes[plane].length = q->plane_sizes[plane];
-	}
-
-	return 0;
-free:
-	/* Free already allocated memory if one of the allocations failed */
-	for (; plane > 0; --plane) {
-		call_memop(q, put, vb->planes[plane - 1].mem_priv);
-		vb->planes[plane - 1].mem_priv = NULL;
-	}
-
-	return -ENOMEM;
-}
-
-/**
- * __vb2_buf_mem_free() - free memory of the given buffer
- */
-static void __vb2_buf_mem_free(struct vb2_buffer *vb)
-{
-	struct vb2_queue *q = vb->vb2_queue;
-	unsigned int plane;
-
-	for (plane = 0; plane < vb->num_planes; ++plane) {
-		call_memop(q, put, vb->planes[plane].mem_priv);
-		vb->planes[plane].mem_priv = NULL;
-		dprintk(3, "Freed plane %d of buffer %d\n", plane,
-			vb->v4l2_buf.index);
-	}
-}
-
-/**
- * __vb2_buf_userptr_put() - release userspace memory associated with
- * a USERPTR buffer
- */
-static void __vb2_buf_userptr_put(struct vb2_buffer *vb)
-{
-	struct vb2_queue *q = vb->vb2_queue;
-	unsigned int plane;
-
-	for (plane = 0; plane < vb->num_planes; ++plane) {
-		if (vb->planes[plane].mem_priv)
-			call_memop(q, put_userptr, vb->planes[plane].mem_priv);
-		vb->planes[plane].mem_priv = NULL;
-	}
-}
-
-/**
- * __setup_offsets() - setup unique offsets ("cookies") for every plane in
- * every buffer on the queue
- */
-static void __setup_offsets(struct vb2_queue *q, unsigned int n)
-{
-	unsigned int buffer, plane;
-	struct vb2_buffer *vb;
-	unsigned long off;
-
-	if (q->num_buffers) {
-		struct v4l2_plane *p;
-		vb = q->bufs[q->num_buffers - 1];
-		p = &vb->v4l2_planes[vb->num_planes - 1];
-		off = PAGE_ALIGN(p->m.mem_offset + p->length);
-	} else {
-		off = 0;
-	}
-
-	for (buffer = q->num_buffers; buffer < q->num_buffers + n; ++buffer) {
-		vb = q->bufs[buffer];
-		if (!vb)
-			continue;
-
-		for (plane = 0; plane < vb->num_planes; ++plane) {
-			vb->v4l2_planes[plane].length = q->plane_sizes[plane];
-			vb->v4l2_planes[plane].m.mem_offset = off;
-
-			dprintk(3, "Buffer %d, plane %d offset 0x%08lx\n",
-					buffer, plane, off);
-
-			off += vb->v4l2_planes[plane].length;
-			off = PAGE_ALIGN(off);
-		}
-	}
-}
-
-/**
- * __vb2_queue_alloc() - allocate videobuf buffer structures and (for MMAP type)
- * video buffer memory for all buffers/planes on the queue and initializes the
- * queue
- *
- * Returns the number of buffers successfully allocated.
- */
-static int __vb2_queue_alloc(struct vb2_queue *q, enum v4l2_memory memory,
-			     unsigned int num_buffers, unsigned int num_planes)
-{
-	unsigned int buffer;
-	struct vb2_buffer *vb;
-	int ret;
-
-	for (buffer = 0; buffer < num_buffers; ++buffer) {
-		/* Allocate videobuf buffer structures */
-		vb = kzalloc(q->buf_struct_size, GFP_KERNEL);
-		if (!vb) {
-			dprintk(1, "Memory alloc for buffer struct failed\n");
-			break;
-		}
-
-		/* Length stores number of planes for multiplanar buffers */
-		if (V4L2_TYPE_IS_MULTIPLANAR(q->type))
-			vb->v4l2_buf.length = num_planes;
-
-		vb->state = VB2_BUF_STATE_DEQUEUED;
-		vb->vb2_queue = q;
-		vb->num_planes = num_planes;
-		vb->v4l2_buf.index = q->num_buffers + buffer;
-		vb->v4l2_buf.type = q->type;
-		vb->v4l2_buf.memory = memory;
-
-		/* Allocate video buffer memory for the MMAP type */
-		if (memory == V4L2_MEMORY_MMAP) {
-			ret = __vb2_buf_mem_alloc(vb);
-			if (ret) {
-				dprintk(1, "Failed allocating memory for "
-						"buffer %d\n", buffer);
-				kfree(vb);
-				break;
-			}
-			/*
-			 * Call the driver-provided buffer initialization
-			 * callback, if given. An error in initialization
-			 * results in queue setup failure.
-			 */
-			ret = call_qop(q, buf_init, vb);
-			if (ret) {
-				dprintk(1, "Buffer %d %p initialization"
-					" failed\n", buffer, vb);
-				__vb2_buf_mem_free(vb);
-				kfree(vb);
-				break;
-			}
-		}
-
-		q->bufs[q->num_buffers + buffer] = vb;
-	}
-
-	__setup_offsets(q, buffer);
-
-	dprintk(1, "Allocated %d buffers, %d plane(s) each\n",
-			buffer, num_planes);
-
-	return buffer;
-}
-
-/**
- * __vb2_free_mem() - release all video buffer memory for a given queue
- */
-static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers)
-{
-	unsigned int buffer;
-	struct vb2_buffer *vb;
-
-	for (buffer = q->num_buffers - buffers; buffer < q->num_buffers;
-	     ++buffer) {
-		vb = q->bufs[buffer];
-		if (!vb)
-			continue;
-
-		/* Free MMAP buffers or release USERPTR buffers */
-		if (q->memory == V4L2_MEMORY_MMAP)
-			__vb2_buf_mem_free(vb);
-		else
-			__vb2_buf_userptr_put(vb);
-	}
-}
-
-/**
- * __vb2_queue_free() - free buffers at the end of the queue - video memory and
- * related information, if no buffers are left return the queue to an
- * uninitialized state. Might be called even if the queue has already been freed.
- */
-static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
-{
-	unsigned int buffer;
-
-	/* Call driver-provided cleanup function for each buffer, if provided */
-	if (q->ops->buf_cleanup) {
-		for (buffer = q->num_buffers - buffers; buffer < q->num_buffers;
-		     ++buffer) {
-			if (NULL == q->bufs[buffer])
-				continue;
-			q->ops->buf_cleanup(q->bufs[buffer]);
-		}
-	}
-
-	/* Release video buffer memory */
-	__vb2_free_mem(q, buffers);
-
-	/* Free videobuf buffers */
-	for (buffer = q->num_buffers - buffers; buffer < q->num_buffers;
-	     ++buffer) {
-		kfree(q->bufs[buffer]);
-		q->bufs[buffer] = NULL;
-	}
-
-	q->num_buffers -= buffers;
-	if (!q->num_buffers)
-		q->memory = 0;
-	INIT_LIST_HEAD(&q->queued_list);
-}
-
-/**
- * __verify_planes_array() - verify that the planes array passed in struct
- * v4l2_buffer from userspace can be safely used
- */
-static int __verify_planes_array(struct vb2_buffer *vb, const struct v4l2_buffer *b)
-{
-	/* Is memory for copying plane information present? */
-	if (NULL == b->m.planes) {
-		dprintk(1, "Multi-planar buffer passed but "
-			   "planes array not provided\n");
-		return -EINVAL;
-	}
-
-	if (b->length < vb->num_planes || b->length > VIDEO_MAX_PLANES) {
-		dprintk(1, "Incorrect planes array length, "
-			   "expected %d, got %d\n", vb->num_planes, b->length);
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-/**
- * __buffer_in_use() - return true if the buffer is in use and
- * the queue cannot be freed (by the means of REQBUFS(0)) call
- */
-static bool __buffer_in_use(struct vb2_queue *q, struct vb2_buffer *vb)
-{
-	unsigned int plane;
-	for (plane = 0; plane < vb->num_planes; ++plane) {
-		void *mem_priv = vb->planes[plane].mem_priv;
-		/*
-		 * If num_users() has not been provided, call_memop
-		 * will return 0, apparently nobody cares about this
-		 * case anyway. If num_users() returns more than 1,
-		 * we are not the only user of the plane's memory.
-		 */
-		if (mem_priv && call_memop(q, num_users, mem_priv) > 1)
-			return true;
-	}
-	return false;
-}
-
-/**
- * __buffers_in_use() - return true if any buffers on the queue are in use and
- * the queue cannot be freed (by the means of REQBUFS(0)) call
- */
-static bool __buffers_in_use(struct vb2_queue *q)
-{
-	unsigned int buffer;
-	for (buffer = 0; buffer < q->num_buffers; ++buffer) {
-		if (__buffer_in_use(q, q->bufs[buffer]))
-			return true;
-	}
-	return false;
-}
-
-/**
- * __fill_v4l2_buffer() - fill in a struct v4l2_buffer with information to be
- * returned to userspace
- */
-static int __fill_v4l2_buffer(struct vb2_buffer *vb, struct v4l2_buffer *b)
-{
-	struct vb2_queue *q = vb->vb2_queue;
-	int ret;
-
-	/* Copy back data such as timestamp, flags, etc. */
-	memcpy(b, &vb->v4l2_buf, offsetof(struct v4l2_buffer, m));
-	b->reserved2 = vb->v4l2_buf.reserved2;
-	b->reserved = vb->v4l2_buf.reserved;
-
-	if (V4L2_TYPE_IS_MULTIPLANAR(q->type)) {
-		ret = __verify_planes_array(vb, b);
-		if (ret)
-			return ret;
-
-		/*
-		 * Fill in plane-related data if userspace provided an array
-		 * for it. The memory and size is verified above.
-		 */
-		memcpy(b->m.planes, vb->v4l2_planes,
-			b->length * sizeof(struct v4l2_plane));
-	} else {
-		/*
-		 * We use length and offset in v4l2_planes array even for
-		 * single-planar buffers, but userspace does not.
-		 */
-		b->length = vb->v4l2_planes[0].length;
-		b->bytesused = vb->v4l2_planes[0].bytesused;
-		if (q->memory == V4L2_MEMORY_MMAP)
-			b->m.offset = vb->v4l2_planes[0].m.mem_offset;
-		else if (q->memory == V4L2_MEMORY_USERPTR)
-			b->m.userptr = vb->v4l2_planes[0].m.userptr;
-	}
-
-	/*
-	 * Clear any buffer state related flags.
-	 */
-	b->flags &= ~V4L2_BUFFER_STATE_FLAGS;
-
-	switch (vb->state) {
-	case VB2_BUF_STATE_QUEUED:
-	case VB2_BUF_STATE_ACTIVE:
-		b->flags |= V4L2_BUF_FLAG_QUEUED;
-		break;
-	case VB2_BUF_STATE_ERROR:
-		b->flags |= V4L2_BUF_FLAG_ERROR;
-		/* fall through */
-	case VB2_BUF_STATE_DONE:
-		b->flags |= V4L2_BUF_FLAG_DONE;
-		break;
-	case VB2_BUF_STATE_PREPARED:
-		b->flags |= V4L2_BUF_FLAG_PREPARED;
-		break;
-	case VB2_BUF_STATE_DEQUEUED:
-		/* nothing */
-		break;
-	}
-
-	if (__buffer_in_use(q, vb))
-		b->flags |= V4L2_BUF_FLAG_MAPPED;
-
-	return 0;
-}
-
-/**
- * vb2_querybuf() - query video buffer information
- * @q:		videobuf queue
- * @b:		buffer struct passed from userspace to vidioc_querybuf handler
- *		in driver
- *
- * Should be called from vidioc_querybuf ioctl handler in driver.
- * This function will verify the passed v4l2_buffer structure and fill the
- * relevant information for the userspace.
- *
- * The return values from this function are intended to be directly returned
- * from vidioc_querybuf handler in driver.
- */
-int vb2_querybuf(struct vb2_queue *q, struct v4l2_buffer *b)
-{
-	struct vb2_buffer *vb;
-
-	if (b->type != q->type) {
-		dprintk(1, "querybuf: wrong buffer type\n");
-		return -EINVAL;
-	}
-
-	if (b->index >= q->num_buffers) {
-		dprintk(1, "querybuf: buffer index out of range\n");
-		return -EINVAL;
-	}
-	vb = q->bufs[b->index];
-
-	return __fill_v4l2_buffer(vb, b);
-}
-EXPORT_SYMBOL(vb2_querybuf);
-
-/**
- * __verify_userptr_ops() - verify that all memory operations required for
- * USERPTR queue type have been provided
- */
-static int __verify_userptr_ops(struct vb2_queue *q)
-{
-	if (!(q->io_modes & VB2_USERPTR) || !q->mem_ops->get_userptr ||
-	    !q->mem_ops->put_userptr)
-		return -EINVAL;
-
-	return 0;
-}
-
-/**
- * __verify_mmap_ops() - verify that all memory operations required for
- * MMAP queue type have been provided
- */
-static int __verify_mmap_ops(struct vb2_queue *q)
-{
-	if (!(q->io_modes & VB2_MMAP) || !q->mem_ops->alloc ||
-	    !q->mem_ops->put || !q->mem_ops->mmap)
-		return -EINVAL;
-
-	return 0;
-}
-
-/**
- * __verify_memory_type() - Check whether the memory type and buffer type
- * passed to a buffer operation are compatible with the queue.
- */
-static int __verify_memory_type(struct vb2_queue *q,
-		enum v4l2_memory memory, enum v4l2_buf_type type)
-{
-	if (memory != V4L2_MEMORY_MMAP && memory != V4L2_MEMORY_USERPTR) {
-		dprintk(1, "reqbufs: unsupported memory type\n");
-		return -EINVAL;
-	}
-
-	if (type != q->type) {
-		dprintk(1, "reqbufs: requested type is incorrect\n");
-		return -EINVAL;
-	}
-
-	/*
-	 * Make sure all the required memory ops for given memory type
-	 * are available.
-	 */
-	if (memory == V4L2_MEMORY_MMAP && __verify_mmap_ops(q)) {
-		dprintk(1, "reqbufs: MMAP for current setup unsupported\n");
-		return -EINVAL;
-	}
-
-	if (memory == V4L2_MEMORY_USERPTR && __verify_userptr_ops(q)) {
-		dprintk(1, "reqbufs: USERPTR for current setup unsupported\n");
-		return -EINVAL;
-	}
-
-	/*
-	 * Place the busy tests at the end: -EBUSY can be ignored when
-	 * create_bufs is called with count == 0, but count == 0 should still
-	 * do the memory and type validation.
-	 */
-	if (q->fileio) {
-		dprintk(1, "reqbufs: file io in progress\n");
-		return -EBUSY;
-	}
-	return 0;
-}
-
-/**
- * __reqbufs() - Initiate streaming
- * @q:		videobuf2 queue
- * @req:	struct passed from userspace to vidioc_reqbufs handler in driver
- *
- * Should be called from vidioc_reqbufs ioctl handler of a driver.
- * This function:
- * 1) verifies streaming parameters passed from the userspace,
- * 2) sets up the queue,
- * 3) negotiates number of buffers and planes per buffer with the driver
- *    to be used during streaming,
- * 4) allocates internal buffer structures (struct vb2_buffer), according to
- *    the agreed parameters,
- * 5) for MMAP memory type, allocates actual video memory, using the
- *    memory handling/allocation routines provided during queue initialization
- *
- * If req->count is 0, all the memory will be freed instead.
- * If the queue has been allocated previously (by a previous vb2_reqbufs) call
- * and the queue is not busy, memory will be reallocated.
- *
- * The return values from this function are intended to be directly returned
- * from vidioc_reqbufs handler in driver.
- */
-static int __reqbufs(struct vb2_queue *q, struct v4l2_requestbuffers *req)
-{
-	unsigned int num_buffers, allocated_buffers, num_planes = 0;
-	int ret;
-
-	if (q->streaming) {
-		dprintk(1, "reqbufs: streaming active\n");
-		return -EBUSY;
-	}
-
-	if (req->count == 0 || q->num_buffers != 0 || q->memory != req->memory) {
-		/*
-		 * We already have buffers allocated, so first check if they
-		 * are not in use and can be freed.
-		 */
-		if (q->memory == V4L2_MEMORY_MMAP && __buffers_in_use(q)) {
-			dprintk(1, "reqbufs: memory in use, cannot free\n");
-			return -EBUSY;
-		}
-
-		__vb2_queue_free(q, q->num_buffers);
-
-		/*
-		 * In case of REQBUFS(0) return immediately without calling
-		 * driver's queue_setup() callback and allocating resources.
-		 */
-		if (req->count == 0)
-			return 0;
-	}
-
-	/*
-	 * Make sure the requested values and current defaults are sane.
-	 */
-	num_buffers = min_t(unsigned int, req->count, VIDEO_MAX_FRAME);
-	memset(q->plane_sizes, 0, sizeof(q->plane_sizes));
-	memset(q->alloc_ctx, 0, sizeof(q->alloc_ctx));
-	q->memory = req->memory;
-
-	/*
-	 * Ask the driver how many buffers and planes per buffer it requires.
-	 * Driver also sets the size and allocator context for each plane.
-	 */
-	ret = call_qop(q, queue_setup, q, NULL, &num_buffers, &num_planes,
-		       q->plane_sizes, q->alloc_ctx);
-	if (ret)
-		return ret;
-
-	/* Finally, allocate buffers and video memory */
-	ret = __vb2_queue_alloc(q, req->memory, num_buffers, num_planes);
-	if (ret == 0) {
-		dprintk(1, "Memory allocation failed\n");
-		return -ENOMEM;
-	}
-
-	allocated_buffers = ret;
-
-	/*
-	 * Check if driver can handle the allocated number of buffers.
-	 */
-	if (allocated_buffers < num_buffers) {
-		num_buffers = allocated_buffers;
-
-		ret = call_qop(q, queue_setup, q, NULL, &num_buffers,
-			       &num_planes, q->plane_sizes, q->alloc_ctx);
-
-		if (!ret && allocated_buffers < num_buffers)
-			ret = -ENOMEM;
-
-		/*
-		 * Either the driver has accepted a smaller number of buffers,
-		 * or .queue_setup() returned an error
-		 */
-	}
-
-	q->num_buffers = allocated_buffers;
-
-	if (ret < 0) {
-		__vb2_queue_free(q, allocated_buffers);
-		return ret;
-	}
-
-	/*
-	 * Return the number of successfully allocated buffers
-	 * to the userspace.
-	 */
-	req->count = allocated_buffers;
-
-	return 0;
-}
-
-/**
- * vb2_reqbufs() - Wrapper for __reqbufs() that also verifies the memory and
- * type values.
- * @q:		videobuf2 queue
- * @req:	struct passed from userspace to vidioc_reqbufs handler in driver
- */
-int vb2_reqbufs(struct vb2_queue *q, struct v4l2_requestbuffers *req)
-{
-	int ret = __verify_memory_type(q, req->memory, req->type);
-
-	return ret ? ret : __reqbufs(q, req);
-}
-EXPORT_SYMBOL_GPL(vb2_reqbufs);
-
-/**
- * __create_bufs() - Allocate buffers and any required auxiliary structs
- * @q:		videobuf2 queue
- * @create:	creation parameters, passed from userspace to vidioc_create_bufs
- *		handler in driver
- *
- * Should be called from vidioc_create_bufs ioctl handler of a driver.
- * This function:
- * 1) verifies parameter sanity
- * 2) calls the .queue_setup() queue operation
- * 3) performs any necessary memory allocations
- *
- * The return values from this function are intended to be directly returned
- * from vidioc_create_bufs handler in driver.
- */
-static int __create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
-{
-	unsigned int num_planes = 0, num_buffers, allocated_buffers;
-	int ret;
-
-	if (q->num_buffers == VIDEO_MAX_FRAME) {
-		dprintk(1, "%s(): maximum number of buffers already allocated\n",
-			__func__);
-		return -ENOBUFS;
-	}
-
-	if (!q->num_buffers) {
-		memset(q->plane_sizes, 0, sizeof(q->plane_sizes));
-		memset(q->alloc_ctx, 0, sizeof(q->alloc_ctx));
-		q->memory = create->memory;
-	}
-
-	num_buffers = min(create->count, VIDEO_MAX_FRAME - q->num_buffers);
-
-	/*
-	 * Ask the driver, whether the requested number of buffers, planes per
-	 * buffer and their sizes are acceptable
-	 */
-	ret = call_qop(q, queue_setup, q, &create->format, &num_buffers,
-		       &num_planes, q->plane_sizes, q->alloc_ctx);
-	if (ret)
-		return ret;
-
-	/* Finally, allocate buffers and video memory */
-	ret = __vb2_queue_alloc(q, create->memory, num_buffers,
-				num_planes);
-	if (ret == 0) {
-		dprintk(1, "Memory allocation failed\n");
-		return -ENOMEM;
-	}
-
-	allocated_buffers = ret;
-
-	/*
-	 * Check if driver can handle the so far allocated number of buffers.
-	 */
-	if (ret < num_buffers) {
-		num_buffers = ret;
-
-		/*
-		 * q->num_buffers contains the total number of buffers, that the
-		 * queue driver has set up
-		 */
-		ret = call_qop(q, queue_setup, q, &create->format, &num_buffers,
-			       &num_planes, q->plane_sizes, q->alloc_ctx);
-
-		if (!ret && allocated_buffers < num_buffers)
-			ret = -ENOMEM;
-
-		/*
-		 * Either the driver has accepted a smaller number of buffers,
-		 * or .queue_setup() returned an error
-		 */
-	}
-
-	q->num_buffers += allocated_buffers;
-
-	if (ret < 0) {
-		__vb2_queue_free(q, allocated_buffers);
-		return -ENOMEM;
-	}
-
-	/*
-	 * Return the number of successfully allocated buffers
-	 * to the userspace.
-	 */
-	create->count = allocated_buffers;
-
-	return 0;
-}
-
-/**
- * vb2_create_bufs() - Wrapper for __create_bufs() that also verifies the
- * memory and type values.
- * @q:		videobuf2 queue
- * @create:	creation parameters, passed from userspace to vidioc_create_bufs
- *		handler in driver
- */
-int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
-{
-	int ret = __verify_memory_type(q, create->memory, create->format.type);
-
-	create->index = q->num_buffers;
-	if (create->count == 0)
-		return ret != -EBUSY ? ret : 0;
-	return ret ? ret : __create_bufs(q, create);
-}
-EXPORT_SYMBOL_GPL(vb2_create_bufs);
-
-/**
- * vb2_plane_vaddr() - Return a kernel virtual address of a given plane
- * @vb:		vb2_buffer to which the plane in question belongs to
- * @plane_no:	plane number for which the address is to be returned
- *
- * This function returns a kernel virtual address of a given plane if
- * such a mapping exist, NULL otherwise.
- */
-void *vb2_plane_vaddr(struct vb2_buffer *vb, unsigned int plane_no)
-{
-	struct vb2_queue *q = vb->vb2_queue;
-
-	if (plane_no > vb->num_planes || !vb->planes[plane_no].mem_priv)
-		return NULL;
-
-	return call_memop(q, vaddr, vb->planes[plane_no].mem_priv);
-
-}
-EXPORT_SYMBOL_GPL(vb2_plane_vaddr);
-
-/**
- * vb2_plane_cookie() - Return allocator specific cookie for the given plane
- * @vb:		vb2_buffer to which the plane in question belongs to
- * @plane_no:	plane number for which the cookie is to be returned
- *
- * This function returns an allocator specific cookie for a given plane if
- * available, NULL otherwise. The allocator should provide some simple static
- * inline function, which would convert this cookie to the allocator specific
- * type that can be used directly by the driver to access the buffer. This can
- * be for example physical address, pointer to scatter list or IOMMU mapping.
- */
-void *vb2_plane_cookie(struct vb2_buffer *vb, unsigned int plane_no)
-{
-	struct vb2_queue *q = vb->vb2_queue;
-
-	if (plane_no > vb->num_planes || !vb->planes[plane_no].mem_priv)
-		return NULL;
-
-	return call_memop(q, cookie, vb->planes[plane_no].mem_priv);
-}
-EXPORT_SYMBOL_GPL(vb2_plane_cookie);
-
-/**
- * vb2_buffer_done() - inform videobuf that an operation on a buffer is finished
- * @vb:		vb2_buffer returned from the driver
- * @state:	either VB2_BUF_STATE_DONE if the operation finished successfully
- *		or VB2_BUF_STATE_ERROR if the operation finished with an error
- *
- * This function should be called by the driver after a hardware operation on
- * a buffer is finished and the buffer may be returned to userspace. The driver
- * cannot use this buffer anymore until it is queued back to it by videobuf
- * by the means of buf_queue callback. Only buffers previously queued to the
- * driver by buf_queue can be passed to this function.
- */
-void vb2_buffer_done(struct vb2_buffer *vb, enum vb2_buffer_state state)
-{
-	struct vb2_queue *q = vb->vb2_queue;
-	unsigned long flags;
-
-	if (vb->state != VB2_BUF_STATE_ACTIVE)
-		return;
-
-	if (state != VB2_BUF_STATE_DONE && state != VB2_BUF_STATE_ERROR)
-		return;
-
-	dprintk(4, "Done processing on buffer %d, state: %d\n",
-			vb->v4l2_buf.index, vb->state);
-
-	/* Add the buffer to the done buffers list */
-	spin_lock_irqsave(&q->done_lock, flags);
-	vb->state = state;
-	list_add_tail(&vb->done_entry, &q->done_list);
-	atomic_dec(&q->queued_count);
-	spin_unlock_irqrestore(&q->done_lock, flags);
-
-	/* Inform any processes that may be waiting for buffers */
-	wake_up(&q->done_wq);
-}
-EXPORT_SYMBOL_GPL(vb2_buffer_done);
-
-/**
- * __fill_vb2_buffer() - fill a vb2_buffer with information provided in
- * a v4l2_buffer by the userspace
- */
-static int __fill_vb2_buffer(struct vb2_buffer *vb, const struct v4l2_buffer *b,
-				struct v4l2_plane *v4l2_planes)
-{
-	unsigned int plane;
-	int ret;
-
-	if (V4L2_TYPE_IS_MULTIPLANAR(b->type)) {
-		/*
-		 * Verify that the userspace gave us a valid array for
-		 * plane information.
-		 */
-		ret = __verify_planes_array(vb, b);
-		if (ret)
-			return ret;
-
-		/* Fill in driver-provided information for OUTPUT types */
-		if (V4L2_TYPE_IS_OUTPUT(b->type)) {
-			/*
-			 * Will have to go up to b->length when API starts
-			 * accepting variable number of planes.
-			 */
-			for (plane = 0; plane < vb->num_planes; ++plane) {
-				v4l2_planes[plane].bytesused =
-					b->m.planes[plane].bytesused;
-				v4l2_planes[plane].data_offset =
-					b->m.planes[plane].data_offset;
-			}
-		}
-
-		if (b->memory == V4L2_MEMORY_USERPTR) {
-			for (plane = 0; plane < vb->num_planes; ++plane) {
-				v4l2_planes[plane].m.userptr =
-					b->m.planes[plane].m.userptr;
-				v4l2_planes[plane].length =
-					b->m.planes[plane].length;
-			}
-		}
-	} else {
-		/*
-		 * Single-planar buffers do not use planes array,
-		 * so fill in relevant v4l2_buffer struct fields instead.
-		 * In videobuf we use our internal V4l2_planes struct for
-		 * single-planar buffers as well, for simplicity.
-		 */
-		if (V4L2_TYPE_IS_OUTPUT(b->type))
-			v4l2_planes[0].bytesused = b->bytesused;
-
-		if (b->memory == V4L2_MEMORY_USERPTR) {
-			v4l2_planes[0].m.userptr = b->m.userptr;
-			v4l2_planes[0].length = b->length;
-		}
-	}
-
-	vb->v4l2_buf.field = b->field;
-	vb->v4l2_buf.timestamp = b->timestamp;
-	vb->v4l2_buf.flags = b->flags & ~V4L2_BUFFER_STATE_FLAGS;
-
-	return 0;
-}
-
-/**
- * __qbuf_userptr() - handle qbuf of a USERPTR buffer
- */
-static int __qbuf_userptr(struct vb2_buffer *vb, const struct v4l2_buffer *b)
-{
-	struct v4l2_plane planes[VIDEO_MAX_PLANES];
-	struct vb2_queue *q = vb->vb2_queue;
-	void *mem_priv;
-	unsigned int plane;
-	int ret;
-	int write = !V4L2_TYPE_IS_OUTPUT(q->type);
-
-	/* Verify and copy relevant information provided by the userspace */
-	ret = __fill_vb2_buffer(vb, b, planes);
-	if (ret)
-		return ret;
-
-	for (plane = 0; plane < vb->num_planes; ++plane) {
-		/* Skip the plane if already verified */
-		if (vb->v4l2_planes[plane].m.userptr &&
-		    vb->v4l2_planes[plane].m.userptr == planes[plane].m.userptr
-		    && vb->v4l2_planes[plane].length == planes[plane].length)
-			continue;
-
-		dprintk(3, "qbuf: userspace address for plane %d changed, "
-				"reacquiring memory\n", plane);
-
-		/* Check if the provided plane buffer is large enough */
-		if (planes[plane].length < q->plane_sizes[plane]) {
-			ret = -EINVAL;
-			goto err;
-		}
-
-		/* Release previously acquired memory if present */
-		if (vb->planes[plane].mem_priv)
-			call_memop(q, put_userptr, vb->planes[plane].mem_priv);
-
-		vb->planes[plane].mem_priv = NULL;
-		vb->v4l2_planes[plane].m.userptr = 0;
-		vb->v4l2_planes[plane].length = 0;
-
-		/* Acquire each plane's memory */
-		mem_priv = call_memop(q, get_userptr, q->alloc_ctx[plane],
-				      planes[plane].m.userptr,
-				      planes[plane].length, write);
-		if (IS_ERR_OR_NULL(mem_priv)) {
-			dprintk(1, "qbuf: failed acquiring userspace "
-						"memory for plane %d\n", plane);
-			ret = mem_priv ? PTR_ERR(mem_priv) : -EINVAL;
-			goto err;
-		}
-		vb->planes[plane].mem_priv = mem_priv;
-	}
-
-	/*
-	 * Call driver-specific initialization on the newly acquired buffer,
-	 * if provided.
-	 */
-	ret = call_qop(q, buf_init, vb);
-	if (ret) {
-		dprintk(1, "qbuf: buffer initialization failed\n");
-		goto err;
-	}
-
-	/*
-	 * Now that everything is in order, copy relevant information
-	 * provided by userspace.
-	 */
-	for (plane = 0; plane < vb->num_planes; ++plane)
-		vb->v4l2_planes[plane] = planes[plane];
-
-	return 0;
-err:
-	/* In case of errors, release planes that were already acquired */
-	for (plane = 0; plane < vb->num_planes; ++plane) {
-		if (vb->planes[plane].mem_priv)
-			call_memop(q, put_userptr, vb->planes[plane].mem_priv);
-		vb->planes[plane].mem_priv = NULL;
-		vb->v4l2_planes[plane].m.userptr = 0;
-		vb->v4l2_planes[plane].length = 0;
-	}
-
-	return ret;
-}
-
-/**
- * __qbuf_mmap() - handle qbuf of an MMAP buffer
- */
-static int __qbuf_mmap(struct vb2_buffer *vb, const struct v4l2_buffer *b)
-{
-	return __fill_vb2_buffer(vb, b, vb->v4l2_planes);
-}
-
-/**
- * __enqueue_in_driver() - enqueue a vb2_buffer in driver for processing
- */
-static void __enqueue_in_driver(struct vb2_buffer *vb)
-{
-	struct vb2_queue *q = vb->vb2_queue;
-
-	vb->state = VB2_BUF_STATE_ACTIVE;
-	atomic_inc(&q->queued_count);
-	q->ops->buf_queue(vb);
-}
-
-static int __buf_prepare(struct vb2_buffer *vb, const struct v4l2_buffer *b)
-{
-	struct vb2_queue *q = vb->vb2_queue;
-	int ret;
-
-	switch (q->memory) {
-	case V4L2_MEMORY_MMAP:
-		ret = __qbuf_mmap(vb, b);
-		break;
-	case V4L2_MEMORY_USERPTR:
-		ret = __qbuf_userptr(vb, b);
-		break;
-	default:
-		WARN(1, "Invalid queue type\n");
-		ret = -EINVAL;
-	}
-
-	if (!ret)
-		ret = call_qop(q, buf_prepare, vb);
-	if (ret)
-		dprintk(1, "qbuf: buffer preparation failed: %d\n", ret);
-	else
-		vb->state = VB2_BUF_STATE_PREPARED;
-
-	return ret;
-}
-
-/**
- * vb2_prepare_buf() - Pass ownership of a buffer from userspace to the kernel
- * @q:		videobuf2 queue
- * @b:		buffer structure passed from userspace to vidioc_prepare_buf
- *		handler in driver
- *
- * Should be called from vidioc_prepare_buf ioctl handler of a driver.
- * This function:
- * 1) verifies the passed buffer,
- * 2) calls buf_prepare callback in the driver (if provided), in which
- *    driver-specific buffer initialization can be performed,
- *
- * The return values from this function are intended to be directly returned
- * from vidioc_prepare_buf handler in driver.
- */
-int vb2_prepare_buf(struct vb2_queue *q, struct v4l2_buffer *b)
-{
-	struct vb2_buffer *vb;
-	int ret;
-
-	if (q->fileio) {
-		dprintk(1, "%s(): file io in progress\n", __func__);
-		return -EBUSY;
-	}
-
-	if (b->type != q->type) {
-		dprintk(1, "%s(): invalid buffer type\n", __func__);
-		return -EINVAL;
-	}
-
-	if (b->index >= q->num_buffers) {
-		dprintk(1, "%s(): buffer index out of range\n", __func__);
-		return -EINVAL;
-	}
-
-	vb = q->bufs[b->index];
-	if (NULL == vb) {
-		/* Should never happen */
-		dprintk(1, "%s(): buffer is NULL\n", __func__);
-		return -EINVAL;
-	}
-
-	if (b->memory != q->memory) {
-		dprintk(1, "%s(): invalid memory type\n", __func__);
-		return -EINVAL;
-	}
-
-	if (vb->state != VB2_BUF_STATE_DEQUEUED) {
-		dprintk(1, "%s(): invalid buffer state %d\n", __func__, vb->state);
-		return -EINVAL;
-	}
-
-	ret = __buf_prepare(vb, b);
-	if (ret < 0)
-		return ret;
-
-	__fill_v4l2_buffer(vb, b);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(vb2_prepare_buf);
-
-/**
- * vb2_qbuf() - Queue a buffer from userspace
- * @q:		videobuf2 queue
- * @b:		buffer structure passed from userspace to vidioc_qbuf handler
- *		in driver
- *
- * Should be called from vidioc_qbuf ioctl handler of a driver.
- * This function:
- * 1) verifies the passed buffer,
- * 2) if necessary, calls buf_prepare callback in the driver (if provided), in
- *    which driver-specific buffer initialization can be performed,
- * 3) if streaming is on, queues the buffer in driver by the means of buf_queue
- *    callback for processing.
- *
- * The return values from this function are intended to be directly returned
- * from vidioc_qbuf handler in driver.
- */
-int vb2_qbuf(struct vb2_queue *q, struct v4l2_buffer *b)
-{
-	struct rw_semaphore *mmap_sem = NULL;
-	struct vb2_buffer *vb;
-	int ret = 0;
-
-	/*
-	 * In case of user pointer buffers vb2 allocator needs to get direct
-	 * access to userspace pages. This requires getting read access on
-	 * mmap semaphore in the current process structure. The same
-	 * semaphore is taken before calling mmap operation, while both mmap
-	 * and qbuf are called by the driver or v4l2 core with driver's lock
-	 * held. To avoid a AB-BA deadlock (mmap_sem then driver's lock in
-	 * mmap and driver's lock then mmap_sem in qbuf) the videobuf2 core
-	 * release driver's lock, takes mmap_sem and then takes again driver's
-	 * lock.
-	 *
-	 * To avoid race with other vb2 calls, which might be called after
-	 * releasing driver's lock, this operation is performed at the
-	 * beggining of qbuf processing. This way the queue status is
-	 * consistent after getting driver's lock back.
-	 */
-	if (q->memory == V4L2_MEMORY_USERPTR) {
-		mmap_sem = &current->mm->mmap_sem;
-		call_qop(q, wait_prepare, q);
-		down_read(mmap_sem);
-		call_qop(q, wait_finish, q);
-	}
-
-	if (q->fileio) {
-		dprintk(1, "qbuf: file io in progress\n");
-		ret = -EBUSY;
-		goto unlock;
-	}
-
-	if (b->type != q->type) {
-		dprintk(1, "qbuf: invalid buffer type\n");
-		ret = -EINVAL;
-		goto unlock;
-	}
-
-	if (b->index >= q->num_buffers) {
-		dprintk(1, "qbuf: buffer index out of range\n");
-		ret = -EINVAL;
-		goto unlock;
-	}
-
-	vb = q->bufs[b->index];
-	if (NULL == vb) {
-		/* Should never happen */
-		dprintk(1, "qbuf: buffer is NULL\n");
-		ret = -EINVAL;
-		goto unlock;
-	}
-
-	if (b->memory != q->memory) {
-		dprintk(1, "qbuf: invalid memory type\n");
-		ret = -EINVAL;
-		goto unlock;
-	}
-
-	switch (vb->state) {
-	case VB2_BUF_STATE_DEQUEUED:
-		ret = __buf_prepare(vb, b);
-		if (ret)
-			goto unlock;
-	case VB2_BUF_STATE_PREPARED:
-		break;
-	default:
-		dprintk(1, "qbuf: buffer already in use\n");
-		ret = -EINVAL;
-		goto unlock;
-	}
-
-	/*
-	 * Add to the queued buffers list, a buffer will stay on it until
-	 * dequeued in dqbuf.
-	 */
-	list_add_tail(&vb->queued_entry, &q->queued_list);
-	vb->state = VB2_BUF_STATE_QUEUED;
-
-	/*
-	 * If already streaming, give the buffer to driver for processing.
-	 * If not, the buffer will be given to driver on next streamon.
-	 */
-	if (q->streaming)
-		__enqueue_in_driver(vb);
-
-	/* Fill buffer information for the userspace */
-	__fill_v4l2_buffer(vb, b);
-
-	dprintk(1, "qbuf of buffer %d succeeded\n", vb->v4l2_buf.index);
-unlock:
-	if (mmap_sem)
-		up_read(mmap_sem);
-	return ret;
-}
-EXPORT_SYMBOL_GPL(vb2_qbuf);
-
-/**
- * __vb2_wait_for_done_vb() - wait for a buffer to become available
- * for dequeuing
- *
- * Will sleep if required for nonblocking == false.
- */
-static int __vb2_wait_for_done_vb(struct vb2_queue *q, int nonblocking)
-{
-	/*
-	 * All operations on vb_done_list are performed under done_lock
-	 * spinlock protection. However, buffers may be removed from
-	 * it and returned to userspace only while holding both driver's
-	 * lock and the done_lock spinlock. Thus we can be sure that as
-	 * long as we hold the driver's lock, the list will remain not
-	 * empty if list_empty() check succeeds.
-	 */
-
-	for (;;) {
-		int ret;
-
-		if (!q->streaming) {
-			dprintk(1, "Streaming off, will not wait for buffers\n");
-			return -EINVAL;
-		}
-
-		if (!list_empty(&q->done_list)) {
-			/*
-			 * Found a buffer that we were waiting for.
-			 */
-			break;
-		}
-
-		if (nonblocking) {
-			dprintk(1, "Nonblocking and no buffers to dequeue, "
-								"will not wait\n");
-			return -EAGAIN;
-		}
-
-		/*
-		 * We are streaming and blocking, wait for another buffer to
-		 * become ready or for streamoff. Driver's lock is released to
-		 * allow streamoff or qbuf to be called while waiting.
-		 */
-		call_qop(q, wait_prepare, q);
-
-		/*
-		 * All locks have been released, it is safe to sleep now.
-		 */
-		dprintk(3, "Will sleep waiting for buffers\n");
-		ret = wait_event_interruptible(q->done_wq,
-				!list_empty(&q->done_list) || !q->streaming);
-
-		/*
-		 * We need to reevaluate both conditions again after reacquiring
-		 * the locks or return an error if one occurred.
-		 */
-		call_qop(q, wait_finish, q);
-		if (ret)
-			return ret;
-	}
-	return 0;
-}
-
-/**
- * __vb2_get_done_vb() - get a buffer ready for dequeuing
- *
- * Will sleep if required for nonblocking == false.
- */
-static int __vb2_get_done_vb(struct vb2_queue *q, struct vb2_buffer **vb,
-				int nonblocking)
-{
-	unsigned long flags;
-	int ret;
-
-	/*
-	 * Wait for at least one buffer to become available on the done_list.
-	 */
-	ret = __vb2_wait_for_done_vb(q, nonblocking);
-	if (ret)
-		return ret;
-
-	/*
-	 * Driver's lock has been held since we last verified that done_list
-	 * is not empty, so no need for another list_empty(done_list) check.
-	 */
-	spin_lock_irqsave(&q->done_lock, flags);
-	*vb = list_first_entry(&q->done_list, struct vb2_buffer, done_entry);
-	list_del(&(*vb)->done_entry);
-	spin_unlock_irqrestore(&q->done_lock, flags);
-
-	return 0;
-}
-
-/**
- * vb2_wait_for_all_buffers() - wait until all buffers are given back to vb2
- * @q:		videobuf2 queue
- *
- * This function will wait until all buffers that have been given to the driver
- * by buf_queue() are given back to vb2 with vb2_buffer_done(). It doesn't call
- * wait_prepare, wait_finish pair. It is intended to be called with all locks
- * taken, for example from stop_streaming() callback.
- */
-int vb2_wait_for_all_buffers(struct vb2_queue *q)
-{
-	if (!q->streaming) {
-		dprintk(1, "Streaming off, will not wait for buffers\n");
-		return -EINVAL;
-	}
-
-	wait_event(q->done_wq, !atomic_read(&q->queued_count));
-	return 0;
-}
-EXPORT_SYMBOL_GPL(vb2_wait_for_all_buffers);
-
-/**
- * vb2_dqbuf() - Dequeue a buffer to the userspace
- * @q:		videobuf2 queue
- * @b:		buffer structure passed from userspace to vidioc_dqbuf handler
- *		in driver
- * @nonblocking: if true, this call will not sleep waiting for a buffer if no
- *		 buffers ready for dequeuing are present. Normally the driver
- *		 would be passing (file->f_flags & O_NONBLOCK) here
- *
- * Should be called from vidioc_dqbuf ioctl handler of a driver.
- * This function:
- * 1) verifies the passed buffer,
- * 2) calls buf_finish callback in the driver (if provided), in which
- *    driver can perform any additional operations that may be required before
- *    returning the buffer to userspace, such as cache sync,
- * 3) the buffer struct members are filled with relevant information for
- *    the userspace.
- *
- * The return values from this function are intended to be directly returned
- * from vidioc_dqbuf handler in driver.
- */
-int vb2_dqbuf(struct vb2_queue *q, struct v4l2_buffer *b, bool nonblocking)
-{
-	struct vb2_buffer *vb = NULL;
-	int ret;
-
-	if (q->fileio) {
-		dprintk(1, "dqbuf: file io in progress\n");
-		return -EBUSY;
-	}
-
-	if (b->type != q->type) {
-		dprintk(1, "dqbuf: invalid buffer type\n");
-		return -EINVAL;
-	}
-
-	ret = __vb2_get_done_vb(q, &vb, nonblocking);
-	if (ret < 0) {
-		dprintk(1, "dqbuf: error getting next done buffer\n");
-		return ret;
-	}
-
-	ret = call_qop(q, buf_finish, vb);
-	if (ret) {
-		dprintk(1, "dqbuf: buffer finish failed\n");
-		return ret;
-	}
-
-	switch (vb->state) {
-	case VB2_BUF_STATE_DONE:
-		dprintk(3, "dqbuf: Returning done buffer\n");
-		break;
-	case VB2_BUF_STATE_ERROR:
-		dprintk(3, "dqbuf: Returning done buffer with errors\n");
-		break;
-	default:
-		dprintk(1, "dqbuf: Invalid buffer state\n");
-		return -EINVAL;
-	}
-
-	/* Fill buffer information for the userspace */
-	__fill_v4l2_buffer(vb, b);
-	/* Remove from videobuf queue */
-	list_del(&vb->queued_entry);
-
-	dprintk(1, "dqbuf of buffer %d, with state %d\n",
-			vb->v4l2_buf.index, vb->state);
-
-	vb->state = VB2_BUF_STATE_DEQUEUED;
-	return 0;
-}
-EXPORT_SYMBOL_GPL(vb2_dqbuf);
-
-/**
- * __vb2_queue_cancel() - cancel and stop (pause) streaming
- *
- * Removes all queued buffers from driver's queue and all buffers queued by
- * userspace from videobuf's queue. Returns to state after reqbufs.
- */
-static void __vb2_queue_cancel(struct vb2_queue *q)
-{
-	unsigned int i;
-
-	/*
-	 * Tell driver to stop all transactions and release all queued
-	 * buffers.
-	 */
-	if (q->streaming)
-		call_qop(q, stop_streaming, q);
-	q->streaming = 0;
-
-	/*
-	 * Remove all buffers from videobuf's list...
-	 */
-	INIT_LIST_HEAD(&q->queued_list);
-	/*
-	 * ...and done list; userspace will not receive any buffers it
-	 * has not already dequeued before initiating cancel.
-	 */
-	INIT_LIST_HEAD(&q->done_list);
-	atomic_set(&q->queued_count, 0);
-	wake_up_all(&q->done_wq);
-
-	/*
-	 * Reinitialize all buffers for next use.
-	 */
-	for (i = 0; i < q->num_buffers; ++i)
-		q->bufs[i]->state = VB2_BUF_STATE_DEQUEUED;
-}
-
-/**
- * vb2_streamon - start streaming
- * @q:		videobuf2 queue
- * @type:	type argument passed from userspace to vidioc_streamon handler
- *
- * Should be called from vidioc_streamon handler of a driver.
- * This function:
- * 1) verifies current state
- * 2) passes any previously queued buffers to the driver and starts streaming
- *
- * The return values from this function are intended to be directly returned
- * from vidioc_streamon handler in the driver.
- */
-int vb2_streamon(struct vb2_queue *q, enum v4l2_buf_type type)
-{
-	struct vb2_buffer *vb;
-	int ret;
-
-	if (q->fileio) {
-		dprintk(1, "streamon: file io in progress\n");
-		return -EBUSY;
-	}
-
-	if (type != q->type) {
-		dprintk(1, "streamon: invalid stream type\n");
-		return -EINVAL;
-	}
-
-	if (q->streaming) {
-		dprintk(1, "streamon: already streaming\n");
-		return -EBUSY;
-	}
-
-	/*
-	 * If any buffers were queued before streamon,
-	 * we can now pass them to driver for processing.
-	 */
-	list_for_each_entry(vb, &q->queued_list, queued_entry)
-		__enqueue_in_driver(vb);
-
-	/*
-	 * Let driver notice that streaming state has been enabled.
-	 */
-	ret = call_qop(q, start_streaming, q, atomic_read(&q->queued_count));
-	if (ret) {
-		dprintk(1, "streamon: driver refused to start streaming\n");
-		__vb2_queue_cancel(q);
-		return ret;
-	}
-
-	q->streaming = 1;
-
-	dprintk(3, "Streamon successful\n");
-	return 0;
-}
-EXPORT_SYMBOL_GPL(vb2_streamon);
-
-
-/**
- * vb2_streamoff - stop streaming
- * @q:		videobuf2 queue
- * @type:	type argument passed from userspace to vidioc_streamoff handler
- *
- * Should be called from vidioc_streamoff handler of a driver.
- * This function:
- * 1) verifies current state,
- * 2) stop streaming and dequeues any queued buffers, including those previously
- *    passed to the driver (after waiting for the driver to finish).
- *
- * This call can be used for pausing playback.
- * The return values from this function are intended to be directly returned
- * from vidioc_streamoff handler in the driver
- */
-int vb2_streamoff(struct vb2_queue *q, enum v4l2_buf_type type)
-{
-	if (q->fileio) {
-		dprintk(1, "streamoff: file io in progress\n");
-		return -EBUSY;
-	}
-
-	if (type != q->type) {
-		dprintk(1, "streamoff: invalid stream type\n");
-		return -EINVAL;
-	}
-
-	if (!q->streaming) {
-		dprintk(1, "streamoff: not streaming\n");
-		return -EINVAL;
-	}
-
-	/*
-	 * Cancel will pause streaming and remove all buffers from the driver
-	 * and videobuf, effectively returning control over them to userspace.
-	 */
-	__vb2_queue_cancel(q);
-
-	dprintk(3, "Streamoff successful\n");
-	return 0;
-}
-EXPORT_SYMBOL_GPL(vb2_streamoff);
-
-/**
- * __find_plane_by_offset() - find plane associated with the given offset off
- */
-static int __find_plane_by_offset(struct vb2_queue *q, unsigned long off,
-			unsigned int *_buffer, unsigned int *_plane)
-{
-	struct vb2_buffer *vb;
-	unsigned int buffer, plane;
-
-	/*
-	 * Go over all buffers and their planes, comparing the given offset
-	 * with an offset assigned to each plane. If a match is found,
-	 * return its buffer and plane numbers.
-	 */
-	for (buffer = 0; buffer < q->num_buffers; ++buffer) {
-		vb = q->bufs[buffer];
-
-		for (plane = 0; plane < vb->num_planes; ++plane) {
-			if (vb->v4l2_planes[plane].m.mem_offset == off) {
-				*_buffer = buffer;
-				*_plane = plane;
-				return 0;
-			}
-		}
-	}
-
-	return -EINVAL;
-}
-
-/**
- * vb2_mmap() - map video buffers into application address space
- * @q:		videobuf2 queue
- * @vma:	vma passed to the mmap file operation handler in the driver
- *
- * Should be called from mmap file operation handler of a driver.
- * This function maps one plane of one of the available video buffers to
- * userspace. To map whole video memory allocated on reqbufs, this function
- * has to be called once per each plane per each buffer previously allocated.
- *
- * When the userspace application calls mmap, it passes to it an offset returned
- * to it earlier by the means of vidioc_querybuf handler. That offset acts as
- * a "cookie", which is then used to identify the plane to be mapped.
- * This function finds a plane with a matching offset and a mapping is performed
- * by the means of a provided memory operation.
- *
- * The return values from this function are intended to be directly returned
- * from the mmap handler in driver.
- */
-int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
-{
-	unsigned long off = vma->vm_pgoff << PAGE_SHIFT;
-	struct vb2_buffer *vb;
-	unsigned int buffer, plane;
-	int ret;
-
-	if (q->memory != V4L2_MEMORY_MMAP) {
-		dprintk(1, "Queue is not currently set up for mmap\n");
-		return -EINVAL;
-	}
-
-	/*
-	 * Check memory area access mode.
-	 */
-	if (!(vma->vm_flags & VM_SHARED)) {
-		dprintk(1, "Invalid vma flags, VM_SHARED needed\n");
-		return -EINVAL;
-	}
-	if (V4L2_TYPE_IS_OUTPUT(q->type)) {
-		if (!(vma->vm_flags & VM_WRITE)) {
-			dprintk(1, "Invalid vma flags, VM_WRITE needed\n");
-			return -EINVAL;
-		}
-	} else {
-		if (!(vma->vm_flags & VM_READ)) {
-			dprintk(1, "Invalid vma flags, VM_READ needed\n");
-			return -EINVAL;
-		}
-	}
-
-	/*
-	 * Find the plane corresponding to the offset passed by userspace.
-	 */
-	ret = __find_plane_by_offset(q, off, &buffer, &plane);
-	if (ret)
-		return ret;
-
-	vb = q->bufs[buffer];
-
-	ret = call_memop(q, mmap, vb->planes[plane].mem_priv, vma);
-	if (ret)
-		return ret;
-
-	dprintk(3, "Buffer %d, plane %d successfully mapped\n", buffer, plane);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(vb2_mmap);
-
-#ifndef CONFIG_MMU
-unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
-				    unsigned long addr,
-				    unsigned long len,
-				    unsigned long pgoff,
-				    unsigned long flags)
-{
-	unsigned long off = pgoff << PAGE_SHIFT;
-	struct vb2_buffer *vb;
-	unsigned int buffer, plane;
-	int ret;
-
-	if (q->memory != V4L2_MEMORY_MMAP) {
-		dprintk(1, "Queue is not currently set up for mmap\n");
-		return -EINVAL;
-	}
-
-	/*
-	 * Find the plane corresponding to the offset passed by userspace.
-	 */
-	ret = __find_plane_by_offset(q, off, &buffer, &plane);
-	if (ret)
-		return ret;
-
-	vb = q->bufs[buffer];
-
-	return (unsigned long)vb2_plane_vaddr(vb, plane);
-}
-EXPORT_SYMBOL_GPL(vb2_get_unmapped_area);
-#endif
-
-static int __vb2_init_fileio(struct vb2_queue *q, int read);
-static int __vb2_cleanup_fileio(struct vb2_queue *q);
-
-/**
- * vb2_poll() - implements poll userspace operation
- * @q:		videobuf2 queue
- * @file:	file argument passed to the poll file operation handler
- * @wait:	wait argument passed to the poll file operation handler
- *
- * This function implements poll file operation handler for a driver.
- * For CAPTURE queues, if a buffer is ready to be dequeued, the userspace will
- * be informed that the file descriptor of a video device is available for
- * reading.
- * For OUTPUT queues, if a buffer is ready to be dequeued, the file descriptor
- * will be reported as available for writing.
- *
- * If the driver uses struct v4l2_fh, then vb2_poll() will also check for any
- * pending events.
- *
- * The return values from this function are intended to be directly returned
- * from poll handler in driver.
- */
-unsigned int vb2_poll(struct vb2_queue *q, struct file *file, poll_table *wait)
-{
-	struct video_device *vfd = video_devdata(file);
-	unsigned long req_events = poll_requested_events(wait);
-	struct vb2_buffer *vb = NULL;
-	unsigned int res = 0;
-	unsigned long flags;
-
-	if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) {
-		struct v4l2_fh *fh = file->private_data;
-
-		if (v4l2_event_pending(fh))
-			res = POLLPRI;
-		else if (req_events & POLLPRI)
-			poll_wait(file, &fh->wait, wait);
-	}
-
-	/*
-	 * Start file I/O emulator only if streaming API has not been used yet.
-	 */
-	if (q->num_buffers == 0 && q->fileio == NULL) {
-		if (!V4L2_TYPE_IS_OUTPUT(q->type) && (q->io_modes & VB2_READ) &&
-				(req_events & (POLLIN | POLLRDNORM))) {
-			if (__vb2_init_fileio(q, 1))
-				return res | POLLERR;
-		}
-		if (V4L2_TYPE_IS_OUTPUT(q->type) && (q->io_modes & VB2_WRITE) &&
-				(req_events & (POLLOUT | POLLWRNORM))) {
-			if (__vb2_init_fileio(q, 0))
-				return res | POLLERR;
-			/*
-			 * Write to OUTPUT queue can be done immediately.
-			 */
-			return res | POLLOUT | POLLWRNORM;
-		}
-	}
-
-	/*
-	 * There is nothing to wait for if no buffers have already been queued.
-	 */
-	if (list_empty(&q->queued_list))
-		return res | POLLERR;
-
-	poll_wait(file, &q->done_wq, wait);
-
-	/*
-	 * Take first buffer available for dequeuing.
-	 */
-	spin_lock_irqsave(&q->done_lock, flags);
-	if (!list_empty(&q->done_list))
-		vb = list_first_entry(&q->done_list, struct vb2_buffer,
-					done_entry);
-	spin_unlock_irqrestore(&q->done_lock, flags);
-
-	if (vb && (vb->state == VB2_BUF_STATE_DONE
-			|| vb->state == VB2_BUF_STATE_ERROR)) {
-		return (V4L2_TYPE_IS_OUTPUT(q->type)) ?
-				res | POLLOUT | POLLWRNORM :
-				res | POLLIN | POLLRDNORM;
-	}
-	return res;
-}
-EXPORT_SYMBOL_GPL(vb2_poll);
-
-/**
- * vb2_queue_init() - initialize a videobuf2 queue
- * @q:		videobuf2 queue; this structure should be allocated in driver
- *
- * The vb2_queue structure should be allocated by the driver. The driver is
- * responsible of clearing it's content and setting initial values for some
- * required entries before calling this function.
- * q->ops, q->mem_ops, q->type and q->io_modes are mandatory. Please refer
- * to the struct vb2_queue description in include/media/videobuf2-core.h
- * for more information.
- */
-int vb2_queue_init(struct vb2_queue *q)
-{
-	BUG_ON(!q);
-	BUG_ON(!q->ops);
-	BUG_ON(!q->mem_ops);
-	BUG_ON(!q->type);
-	BUG_ON(!q->io_modes);
-
-	BUG_ON(!q->ops->queue_setup);
-	BUG_ON(!q->ops->buf_queue);
-
-	INIT_LIST_HEAD(&q->queued_list);
-	INIT_LIST_HEAD(&q->done_list);
-	spin_lock_init(&q->done_lock);
-	init_waitqueue_head(&q->done_wq);
-
-	if (q->buf_struct_size == 0)
-		q->buf_struct_size = sizeof(struct vb2_buffer);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(vb2_queue_init);
-
-/**
- * vb2_queue_release() - stop streaming, release the queue and free memory
- * @q:		videobuf2 queue
- *
- * This function stops streaming and performs necessary clean ups, including
- * freeing video buffer memory. The driver is responsible for freeing
- * the vb2_queue structure itself.
- */
-void vb2_queue_release(struct vb2_queue *q)
-{
-	__vb2_cleanup_fileio(q);
-	__vb2_queue_cancel(q);
-	__vb2_queue_free(q, q->num_buffers);
-}
-EXPORT_SYMBOL_GPL(vb2_queue_release);
-
-/**
- * struct vb2_fileio_buf - buffer context used by file io emulator
- *
- * vb2 provides a compatibility layer and emulator of file io (read and
- * write) calls on top of streaming API. This structure is used for
- * tracking context related to the buffers.
- */
-struct vb2_fileio_buf {
-	void *vaddr;
-	unsigned int size;
-	unsigned int pos;
-	unsigned int queued:1;
-};
-
-/**
- * struct vb2_fileio_data - queue context used by file io emulator
- *
- * vb2 provides a compatibility layer and emulator of file io (read and
- * write) calls on top of streaming API. For proper operation it required
- * this structure to save the driver state between each call of the read
- * or write function.
- */
-struct vb2_fileio_data {
-	struct v4l2_requestbuffers req;
-	struct v4l2_buffer b;
-	struct vb2_fileio_buf bufs[VIDEO_MAX_FRAME];
-	unsigned int index;
-	unsigned int q_count;
-	unsigned int dq_count;
-	unsigned int flags;
-};
-
-/**
- * __vb2_init_fileio() - initialize file io emulator
- * @q:		videobuf2 queue
- * @read:	mode selector (1 means read, 0 means write)
- */
-static int __vb2_init_fileio(struct vb2_queue *q, int read)
-{
-	struct vb2_fileio_data *fileio;
-	int i, ret;
-	unsigned int count = 0;
-
-	/*
-	 * Sanity check
-	 */
-	if ((read && !(q->io_modes & VB2_READ)) ||
-	   (!read && !(q->io_modes & VB2_WRITE)))
-		BUG();
-
-	/*
-	 * Check if device supports mapping buffers to kernel virtual space.
-	 */
-	if (!q->mem_ops->vaddr)
-		return -EBUSY;
-
-	/*
-	 * Check if streaming api has not been already activated.
-	 */
-	if (q->streaming || q->num_buffers > 0)
-		return -EBUSY;
-
-	/*
-	 * Start with count 1, driver can increase it in queue_setup()
-	 */
-	count = 1;
-
-	dprintk(3, "setting up file io: mode %s, count %d, flags %08x\n",
-		(read) ? "read" : "write", count, q->io_flags);
-
-	fileio = kzalloc(sizeof(struct vb2_fileio_data), GFP_KERNEL);
-	if (fileio == NULL)
-		return -ENOMEM;
-
-	fileio->flags = q->io_flags;
-
-	/*
-	 * Request buffers and use MMAP type to force driver
-	 * to allocate buffers by itself.
-	 */
-	fileio->req.count = count;
-	fileio->req.memory = V4L2_MEMORY_MMAP;
-	fileio->req.type = q->type;
-	ret = vb2_reqbufs(q, &fileio->req);
-	if (ret)
-		goto err_kfree;
-
-	/*
-	 * Check if plane_count is correct
-	 * (multiplane buffers are not supported).
-	 */
-	if (q->bufs[0]->num_planes != 1) {
-		ret = -EBUSY;
-		goto err_reqbufs;
-	}
-
-	/*
-	 * Get kernel address of each buffer.
-	 */
-	for (i = 0; i < q->num_buffers; i++) {
-		fileio->bufs[i].vaddr = vb2_plane_vaddr(q->bufs[i], 0);
-		if (fileio->bufs[i].vaddr == NULL)
-			goto err_reqbufs;
-		fileio->bufs[i].size = vb2_plane_size(q->bufs[i], 0);
-	}
-
-	/*
-	 * Read mode requires pre queuing of all buffers.
-	 */
-	if (read) {
-		/*
-		 * Queue all buffers.
-		 */
-		for (i = 0; i < q->num_buffers; i++) {
-			struct v4l2_buffer *b = &fileio->b;
-			memset(b, 0, sizeof(*b));
-			b->type = q->type;
-			b->memory = q->memory;
-			b->index = i;
-			ret = vb2_qbuf(q, b);
-			if (ret)
-				goto err_reqbufs;
-			fileio->bufs[i].queued = 1;
-		}
-
-		/*
-		 * Start streaming.
-		 */
-		ret = vb2_streamon(q, q->type);
-		if (ret)
-			goto err_reqbufs;
-	}
-
-	q->fileio = fileio;
-
-	return ret;
-
-err_reqbufs:
-	fileio->req.count = 0;
-	vb2_reqbufs(q, &fileio->req);
-
-err_kfree:
-	kfree(fileio);
-	return ret;
-}
-
-/**
- * __vb2_cleanup_fileio() - free resourced used by file io emulator
- * @q:		videobuf2 queue
- */
-static int __vb2_cleanup_fileio(struct vb2_queue *q)
-{
-	struct vb2_fileio_data *fileio = q->fileio;
-
-	if (fileio) {
-		/*
-		 * Hack fileio context to enable direct calls to vb2 ioctl
-		 * interface.
-		 */
-		q->fileio = NULL;
-
-		vb2_streamoff(q, q->type);
-		fileio->req.count = 0;
-		vb2_reqbufs(q, &fileio->req);
-		kfree(fileio);
-		dprintk(3, "file io emulator closed\n");
-	}
-	return 0;
-}
-
-/**
- * __vb2_perform_fileio() - perform a single file io (read or write) operation
- * @q:		videobuf2 queue
- * @data:	pointed to target userspace buffer
- * @count:	number of bytes to read or write
- * @ppos:	file handle position tracking pointer
- * @nonblock:	mode selector (1 means blocking calls, 0 means nonblocking)
- * @read:	access mode selector (1 means read, 0 means write)
- */
-static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_t count,
-		loff_t *ppos, int nonblock, int read)
-{
-	struct vb2_fileio_data *fileio;
-	struct vb2_fileio_buf *buf;
-	int ret, index;
-
-	dprintk(3, "file io: mode %s, offset %ld, count %zd, %sblocking\n",
-		read ? "read" : "write", (long)*ppos, count,
-		nonblock ? "non" : "");
-
-	if (!data)
-		return -EINVAL;
-
-	/*
-	 * Initialize emulator on first call.
-	 */
-	if (!q->fileio) {
-		ret = __vb2_init_fileio(q, read);
-		dprintk(3, "file io: vb2_init_fileio result: %d\n", ret);
-		if (ret)
-			return ret;
-	}
-	fileio = q->fileio;
-
-	/*
-	 * Hack fileio context to enable direct calls to vb2 ioctl interface.
-	 * The pointer will be restored before returning from this function.
-	 */
-	q->fileio = NULL;
-
-	index = fileio->index;
-	buf = &fileio->bufs[index];
-
-	/*
-	 * Check if we need to dequeue the buffer.
-	 */
-	if (buf->queued) {
-		struct vb2_buffer *vb;
-
-		/*
-		 * Call vb2_dqbuf to get buffer back.
-		 */
-		memset(&fileio->b, 0, sizeof(fileio->b));
-		fileio->b.type = q->type;
-		fileio->b.memory = q->memory;
-		fileio->b.index = index;
-		ret = vb2_dqbuf(q, &fileio->b, nonblock);
-		dprintk(5, "file io: vb2_dqbuf result: %d\n", ret);
-		if (ret)
-			goto end;
-		fileio->dq_count += 1;
-
-		/*
-		 * Get number of bytes filled by the driver
-		 */
-		vb = q->bufs[index];
-		buf->size = vb2_get_plane_payload(vb, 0);
-		buf->queued = 0;
-	}
-
-	/*
-	 * Limit count on last few bytes of the buffer.
-	 */
-	if (buf->pos + count > buf->size) {
-		count = buf->size - buf->pos;
-		dprintk(5, "reducing read count: %zd\n", count);
-	}
-
-	/*
-	 * Transfer data to userspace.
-	 */
-	dprintk(3, "file io: copying %zd bytes - buffer %d, offset %u\n",
-		count, index, buf->pos);
-	if (read)
-		ret = copy_to_user(data, buf->vaddr + buf->pos, count);
-	else
-		ret = copy_from_user(buf->vaddr + buf->pos, data, count);
-	if (ret) {
-		dprintk(3, "file io: error copying data\n");
-		ret = -EFAULT;
-		goto end;
-	}
-
-	/*
-	 * Update counters.
-	 */
-	buf->pos += count;
-	*ppos += count;
-
-	/*
-	 * Queue next buffer if required.
-	 */
-	if (buf->pos == buf->size ||
-	   (!read && (fileio->flags & VB2_FILEIO_WRITE_IMMEDIATELY))) {
-		/*
-		 * Check if this is the last buffer to read.
-		 */
-		if (read && (fileio->flags & VB2_FILEIO_READ_ONCE) &&
-		    fileio->dq_count == 1) {
-			dprintk(3, "file io: read limit reached\n");
-			/*
-			 * Restore fileio pointer and release the context.
-			 */
-			q->fileio = fileio;
-			return __vb2_cleanup_fileio(q);
-		}
-
-		/*
-		 * Call vb2_qbuf and give buffer to the driver.
-		 */
-		memset(&fileio->b, 0, sizeof(fileio->b));
-		fileio->b.type = q->type;
-		fileio->b.memory = q->memory;
-		fileio->b.index = index;
-		fileio->b.bytesused = buf->pos;
-		ret = vb2_qbuf(q, &fileio->b);
-		dprintk(5, "file io: vb2_dbuf result: %d\n", ret);
-		if (ret)
-			goto end;
-
-		/*
-		 * Buffer has been queued, update the status
-		 */
-		buf->pos = 0;
-		buf->queued = 1;
-		buf->size = q->bufs[0]->v4l2_planes[0].length;
-		fileio->q_count += 1;
-
-		/*
-		 * Switch to the next buffer
-		 */
-		fileio->index = (index + 1) % q->num_buffers;
-
-		/*
-		 * Start streaming if required.
-		 */
-		if (!read && !q->streaming) {
-			ret = vb2_streamon(q, q->type);
-			if (ret)
-				goto end;
-		}
-	}
-
-	/*
-	 * Return proper number of bytes processed.
-	 */
-	if (ret == 0)
-		ret = count;
-end:
-	/*
-	 * Restore the fileio context and block vb2 ioctl interface.
-	 */
-	q->fileio = fileio;
-	return ret;
-}
-
-size_t vb2_read(struct vb2_queue *q, char __user *data, size_t count,
-		loff_t *ppos, int nonblocking)
-{
-	return __vb2_perform_fileio(q, data, count, ppos, nonblocking, 1);
-}
-EXPORT_SYMBOL_GPL(vb2_read);
-
-size_t vb2_write(struct vb2_queue *q, char __user *data, size_t count,
-		loff_t *ppos, int nonblocking)
-{
-	return __vb2_perform_fileio(q, data, count, ppos, nonblocking, 0);
-}
-EXPORT_SYMBOL_GPL(vb2_write);
-
-
-/*
- * The following functions are not part of the vb2 core API, but are helper
- * functions that plug into struct v4l2_ioctl_ops, struct v4l2_file_operations
- * and struct vb2_ops.
- * They contain boilerplate code that most if not all drivers have to do
- * and so they simplify the driver code.
- */
-
-/* The queue is busy if there is a owner and you are not that owner. */
-static inline bool vb2_queue_is_busy(struct video_device *vdev, struct file *file)
-{
-	return vdev->queue->owner && vdev->queue->owner != file->private_data;
-}
-
-/* vb2 ioctl helpers */
-
-int vb2_ioctl_reqbufs(struct file *file, void *priv,
-			  struct v4l2_requestbuffers *p)
-{
-	struct video_device *vdev = video_devdata(file);
-	int res = __verify_memory_type(vdev->queue, p->memory, p->type);
-
-	if (res)
-		return res;
-	if (vb2_queue_is_busy(vdev, file))
-		return -EBUSY;
-	res = __reqbufs(vdev->queue, p);
-	/* If count == 0, then the owner has released all buffers and he
-	   is no longer owner of the queue. Otherwise we have a new owner. */
-	if (res == 0)
-		vdev->queue->owner = p->count ? file->private_data : NULL;
-	return res;
-}
-EXPORT_SYMBOL_GPL(vb2_ioctl_reqbufs);
-
-int vb2_ioctl_create_bufs(struct file *file, void *priv,
-			  struct v4l2_create_buffers *p)
-{
-	struct video_device *vdev = video_devdata(file);
-	int res = __verify_memory_type(vdev->queue, p->memory, p->format.type);
-
-	p->index = vdev->queue->num_buffers;
-	/* If count == 0, then just check if memory and type are valid.
-	   Any -EBUSY result from __verify_memory_type can be mapped to 0. */
-	if (p->count == 0)
-		return res != -EBUSY ? res : 0;
-	if (res)
-		return res;
-	if (vb2_queue_is_busy(vdev, file))
-		return -EBUSY;
-	res = __create_bufs(vdev->queue, p);
-	if (res == 0)
-		vdev->queue->owner = file->private_data;
-	return res;
-}
-EXPORT_SYMBOL_GPL(vb2_ioctl_create_bufs);
-
-int vb2_ioctl_prepare_buf(struct file *file, void *priv,
-			  struct v4l2_buffer *p)
-{
-	struct video_device *vdev = video_devdata(file);
-
-	if (vb2_queue_is_busy(vdev, file))
-		return -EBUSY;
-	return vb2_prepare_buf(vdev->queue, p);
-}
-EXPORT_SYMBOL_GPL(vb2_ioctl_prepare_buf);
-
-int vb2_ioctl_querybuf(struct file *file, void *priv, struct v4l2_buffer *p)
-{
-	struct video_device *vdev = video_devdata(file);
-
-	/* No need to call vb2_queue_is_busy(), anyone can query buffers. */
-	return vb2_querybuf(vdev->queue, p);
-}
-EXPORT_SYMBOL_GPL(vb2_ioctl_querybuf);
-
-int vb2_ioctl_qbuf(struct file *file, void *priv, struct v4l2_buffer *p)
-{
-	struct video_device *vdev = video_devdata(file);
-
-	if (vb2_queue_is_busy(vdev, file))
-		return -EBUSY;
-	return vb2_qbuf(vdev->queue, p);
-}
-EXPORT_SYMBOL_GPL(vb2_ioctl_qbuf);
-
-int vb2_ioctl_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
-{
-	struct video_device *vdev = video_devdata(file);
-
-	if (vb2_queue_is_busy(vdev, file))
-		return -EBUSY;
-	return vb2_dqbuf(vdev->queue, p, file->f_flags & O_NONBLOCK);
-}
-EXPORT_SYMBOL_GPL(vb2_ioctl_dqbuf);
-
-int vb2_ioctl_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
-{
-	struct video_device *vdev = video_devdata(file);
-
-	if (vb2_queue_is_busy(vdev, file))
-		return -EBUSY;
-	return vb2_streamon(vdev->queue, i);
-}
-EXPORT_SYMBOL_GPL(vb2_ioctl_streamon);
-
-int vb2_ioctl_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
-{
-	struct video_device *vdev = video_devdata(file);
-
-	if (vb2_queue_is_busy(vdev, file))
-		return -EBUSY;
-	return vb2_streamoff(vdev->queue, i);
-}
-EXPORT_SYMBOL_GPL(vb2_ioctl_streamoff);
-
-/* v4l2_file_operations helpers */
-
-int vb2_fop_mmap(struct file *file, struct vm_area_struct *vma)
-{
-	struct video_device *vdev = video_devdata(file);
-
-	return vb2_mmap(vdev->queue, vma);
-}
-EXPORT_SYMBOL_GPL(vb2_fop_mmap);
-
-int vb2_fop_release(struct file *file)
-{
-	struct video_device *vdev = video_devdata(file);
-
-	if (file->private_data == vdev->queue->owner) {
-		vb2_queue_release(vdev->queue);
-		vdev->queue->owner = NULL;
-	}
-	return v4l2_fh_release(file);
-}
-EXPORT_SYMBOL_GPL(vb2_fop_release);
-
-ssize_t vb2_fop_write(struct file *file, char __user *buf,
-		size_t count, loff_t *ppos)
-{
-	struct video_device *vdev = video_devdata(file);
-	struct mutex *lock = vdev->queue->lock ? vdev->queue->lock : vdev->lock;
-	int err = -EBUSY;
-
-	if (lock && mutex_lock_interruptible(lock))
-		return -ERESTARTSYS;
-	if (vb2_queue_is_busy(vdev, file))
-		goto exit;
-	err = vb2_write(vdev->queue, buf, count, ppos,
-		       file->f_flags & O_NONBLOCK);
-	if (err >= 0)
-		vdev->queue->owner = file->private_data;
-exit:
-	if (lock)
-		mutex_unlock(lock);
-	return err;
-}
-EXPORT_SYMBOL_GPL(vb2_fop_write);
-
-ssize_t vb2_fop_read(struct file *file, char __user *buf,
-		size_t count, loff_t *ppos)
-{
-	struct video_device *vdev = video_devdata(file);
-	struct mutex *lock = vdev->queue->lock ? vdev->queue->lock : vdev->lock;
-	int err = -EBUSY;
-
-	if (lock && mutex_lock_interruptible(lock))
-		return -ERESTARTSYS;
-	if (vb2_queue_is_busy(vdev, file))
-		goto exit;
-	err = vb2_read(vdev->queue, buf, count, ppos,
-		       file->f_flags & O_NONBLOCK);
-	if (err >= 0)
-		vdev->queue->owner = file->private_data;
-exit:
-	if (lock)
-		mutex_unlock(lock);
-	return err;
-}
-EXPORT_SYMBOL_GPL(vb2_fop_read);
-
-unsigned int vb2_fop_poll(struct file *file, poll_table *wait)
-{
-	struct video_device *vdev = video_devdata(file);
-	struct vb2_queue *q = vdev->queue;
-	struct mutex *lock = q->lock ? q->lock : vdev->lock;
-	unsigned long req_events = poll_requested_events(wait);
-	unsigned res;
-	void *fileio;
-	bool must_lock = false;
-
-	/* Try to be smart: only lock if polling might start fileio,
-	   otherwise locking will only introduce unwanted delays. */
-	if (q->num_buffers == 0 && q->fileio == NULL) {
-		if (!V4L2_TYPE_IS_OUTPUT(q->type) && (q->io_modes & VB2_READ) &&
-				(req_events & (POLLIN | POLLRDNORM)))
-			must_lock = true;
-		else if (V4L2_TYPE_IS_OUTPUT(q->type) && (q->io_modes & VB2_WRITE) &&
-				(req_events & (POLLOUT | POLLWRNORM)))
-			must_lock = true;
-	}
-
-	/* If locking is needed, but this helper doesn't know how, then you
-	   shouldn't be using this helper but you should write your own. */
-	WARN_ON(must_lock && !lock);
-
-	if (must_lock && lock && mutex_lock_interruptible(lock))
-		return POLLERR;
-
-	fileio = q->fileio;
-
-	res = vb2_poll(vdev->queue, file, wait);
-
-	/* If fileio was started, then we have a new queue owner. */
-	if (must_lock && !fileio && q->fileio)
-		q->owner = file->private_data;
-	if (must_lock && lock)
-		mutex_unlock(lock);
-	return res;
-}
-EXPORT_SYMBOL_GPL(vb2_fop_poll);
-
-#ifndef CONFIG_MMU
-unsigned long vb2_fop_get_unmapped_area(struct file *file, unsigned long addr,
-		unsigned long len, unsigned long pgoff, unsigned long flags)
-{
-	struct video_device *vdev = video_devdata(file);
-
-	return vb2_get_unmapped_area(vdev->queue, addr, len, pgoff, flags);
-}
-EXPORT_SYMBOL_GPL(vb2_fop_get_unmapped_area);
-#endif
-
-/* vb2_ops helpers. Only use if vq->lock is non-NULL. */
-
-void vb2_ops_wait_prepare(struct vb2_queue *vq)
-{
-	mutex_unlock(vq->lock);
-}
-EXPORT_SYMBOL_GPL(vb2_ops_wait_prepare);
-
-void vb2_ops_wait_finish(struct vb2_queue *vq)
-{
-	mutex_lock(vq->lock);
-}
-EXPORT_SYMBOL_GPL(vb2_ops_wait_finish);
-
-MODULE_DESCRIPTION("Driver helper framework for Video for Linux 2");
-MODULE_AUTHOR("Pawel Osciak <pawel@osciak.com>, Marek Szyprowski");
-MODULE_LICENSE("GPL");
diff --git a/drivers/media/video/videobuf2-dma-contig.c b/drivers/media/video/videobuf2-dma-contig.c
deleted file mode 100644
index 4b7132660a93..000000000000
--- a/drivers/media/video/videobuf2-dma-contig.c
+++ /dev/null
@@ -1,186 +0,0 @@
-/*
- * videobuf2-dma-contig.c - DMA contig memory allocator for videobuf2
- *
- * Copyright (C) 2010 Samsung Electronics
- *
- * Author: Pawel Osciak <pawel@osciak.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation.
- */
-
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/dma-mapping.h>
-
-#include <media/videobuf2-core.h>
-#include <media/videobuf2-dma-contig.h>
-#include <media/videobuf2-memops.h>
-
-struct vb2_dc_conf {
-	struct device		*dev;
-};
-
-struct vb2_dc_buf {
-	struct vb2_dc_conf		*conf;
-	void				*vaddr;
-	dma_addr_t			dma_addr;
-	unsigned long			size;
-	struct vm_area_struct		*vma;
-	atomic_t			refcount;
-	struct vb2_vmarea_handler	handler;
-};
-
-static void vb2_dma_contig_put(void *buf_priv);
-
-static void *vb2_dma_contig_alloc(void *alloc_ctx, unsigned long size)
-{
-	struct vb2_dc_conf *conf = alloc_ctx;
-	struct vb2_dc_buf *buf;
-
-	buf = kzalloc(sizeof *buf, GFP_KERNEL);
-	if (!buf)
-		return ERR_PTR(-ENOMEM);
-
-	buf->vaddr = dma_alloc_coherent(conf->dev, size, &buf->dma_addr,
-					GFP_KERNEL);
-	if (!buf->vaddr) {
-		dev_err(conf->dev, "dma_alloc_coherent of size %ld failed\n",
-			size);
-		kfree(buf);
-		return ERR_PTR(-ENOMEM);
-	}
-
-	buf->conf = conf;
-	buf->size = size;
-
-	buf->handler.refcount = &buf->refcount;
-	buf->handler.put = vb2_dma_contig_put;
-	buf->handler.arg = buf;
-
-	atomic_inc(&buf->refcount);
-
-	return buf;
-}
-
-static void vb2_dma_contig_put(void *buf_priv)
-{
-	struct vb2_dc_buf *buf = buf_priv;
-
-	if (atomic_dec_and_test(&buf->refcount)) {
-		dma_free_coherent(buf->conf->dev, buf->size, buf->vaddr,
-				  buf->dma_addr);
-		kfree(buf);
-	}
-}
-
-static void *vb2_dma_contig_cookie(void *buf_priv)
-{
-	struct vb2_dc_buf *buf = buf_priv;
-
-	return &buf->dma_addr;
-}
-
-static void *vb2_dma_contig_vaddr(void *buf_priv)
-{
-	struct vb2_dc_buf *buf = buf_priv;
-	if (!buf)
-		return NULL;
-
-	return buf->vaddr;
-}
-
-static unsigned int vb2_dma_contig_num_users(void *buf_priv)
-{
-	struct vb2_dc_buf *buf = buf_priv;
-
-	return atomic_read(&buf->refcount);
-}
-
-static int vb2_dma_contig_mmap(void *buf_priv, struct vm_area_struct *vma)
-{
-	struct vb2_dc_buf *buf = buf_priv;
-
-	if (!buf) {
-		printk(KERN_ERR "No buffer to map\n");
-		return -EINVAL;
-	}
-
-	return vb2_mmap_pfn_range(vma, buf->dma_addr, buf->size,
-				  &vb2_common_vm_ops, &buf->handler);
-}
-
-static void *vb2_dma_contig_get_userptr(void *alloc_ctx, unsigned long vaddr,
-					unsigned long size, int write)
-{
-	struct vb2_dc_buf *buf;
-	struct vm_area_struct *vma;
-	dma_addr_t dma_addr = 0;
-	int ret;
-
-	buf = kzalloc(sizeof *buf, GFP_KERNEL);
-	if (!buf)
-		return ERR_PTR(-ENOMEM);
-
-	ret = vb2_get_contig_userptr(vaddr, size, &vma, &dma_addr);
-	if (ret) {
-		printk(KERN_ERR "Failed acquiring VMA for vaddr 0x%08lx\n",
-				vaddr);
-		kfree(buf);
-		return ERR_PTR(ret);
-	}
-
-	buf->size = size;
-	buf->dma_addr = dma_addr;
-	buf->vma = vma;
-
-	return buf;
-}
-
-static void vb2_dma_contig_put_userptr(void *mem_priv)
-{
-	struct vb2_dc_buf *buf = mem_priv;
-
-	if (!buf)
-		return;
-
-	vb2_put_vma(buf->vma);
-	kfree(buf);
-}
-
-const struct vb2_mem_ops vb2_dma_contig_memops = {
-	.alloc		= vb2_dma_contig_alloc,
-	.put		= vb2_dma_contig_put,
-	.cookie		= vb2_dma_contig_cookie,
-	.vaddr		= vb2_dma_contig_vaddr,
-	.mmap		= vb2_dma_contig_mmap,
-	.get_userptr	= vb2_dma_contig_get_userptr,
-	.put_userptr	= vb2_dma_contig_put_userptr,
-	.num_users	= vb2_dma_contig_num_users,
-};
-EXPORT_SYMBOL_GPL(vb2_dma_contig_memops);
-
-void *vb2_dma_contig_init_ctx(struct device *dev)
-{
-	struct vb2_dc_conf *conf;
-
-	conf = kzalloc(sizeof *conf, GFP_KERNEL);
-	if (!conf)
-		return ERR_PTR(-ENOMEM);
-
-	conf->dev = dev;
-
-	return conf;
-}
-EXPORT_SYMBOL_GPL(vb2_dma_contig_init_ctx);
-
-void vb2_dma_contig_cleanup_ctx(void *alloc_ctx)
-{
-	kfree(alloc_ctx);
-}
-EXPORT_SYMBOL_GPL(vb2_dma_contig_cleanup_ctx);
-
-MODULE_DESCRIPTION("DMA-contig memory handling routines for videobuf2");
-MODULE_AUTHOR("Pawel Osciak <pawel@osciak.com>");
-MODULE_LICENSE("GPL");
diff --git a/drivers/media/video/videobuf2-dma-sg.c b/drivers/media/video/videobuf2-dma-sg.c
deleted file mode 100644
index 25c3b360e1ad..000000000000
--- a/drivers/media/video/videobuf2-dma-sg.c
+++ /dev/null
@@ -1,283 +0,0 @@
-/*
- * videobuf2-dma-sg.c - dma scatter/gather memory allocator for videobuf2
- *
- * Copyright (C) 2010 Samsung Electronics
- *
- * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation.
- */
-
-#include <linux/module.h>
-#include <linux/mm.h>
-#include <linux/scatterlist.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-
-#include <media/videobuf2-core.h>
-#include <media/videobuf2-memops.h>
-#include <media/videobuf2-dma-sg.h>
-
-struct vb2_dma_sg_buf {
-	void				*vaddr;
-	struct page			**pages;
-	int				write;
-	int				offset;
-	struct vb2_dma_sg_desc		sg_desc;
-	atomic_t			refcount;
-	struct vb2_vmarea_handler	handler;
-};
-
-static void vb2_dma_sg_put(void *buf_priv);
-
-static void *vb2_dma_sg_alloc(void *alloc_ctx, unsigned long size)
-{
-	struct vb2_dma_sg_buf *buf;
-	int i;
-
-	buf = kzalloc(sizeof *buf, GFP_KERNEL);
-	if (!buf)
-		return NULL;
-
-	buf->vaddr = NULL;
-	buf->write = 0;
-	buf->offset = 0;
-	buf->sg_desc.size = size;
-	buf->sg_desc.num_pages = (size + PAGE_SIZE - 1) >> PAGE_SHIFT;
-
-	buf->sg_desc.sglist = vzalloc(buf->sg_desc.num_pages *
-				      sizeof(*buf->sg_desc.sglist));
-	if (!buf->sg_desc.sglist)
-		goto fail_sglist_alloc;
-	sg_init_table(buf->sg_desc.sglist, buf->sg_desc.num_pages);
-
-	buf->pages = kzalloc(buf->sg_desc.num_pages * sizeof(struct page *),
-			     GFP_KERNEL);
-	if (!buf->pages)
-		goto fail_pages_array_alloc;
-
-	for (i = 0; i < buf->sg_desc.num_pages; ++i) {
-		buf->pages[i] = alloc_page(GFP_KERNEL | __GFP_ZERO | __GFP_NOWARN);
-		if (NULL == buf->pages[i])
-			goto fail_pages_alloc;
-		sg_set_page(&buf->sg_desc.sglist[i],
-			    buf->pages[i], PAGE_SIZE, 0);
-	}
-
-	buf->handler.refcount = &buf->refcount;
-	buf->handler.put = vb2_dma_sg_put;
-	buf->handler.arg = buf;
-
-	atomic_inc(&buf->refcount);
-
-	printk(KERN_DEBUG "%s: Allocated buffer of %d pages\n",
-		__func__, buf->sg_desc.num_pages);
-	return buf;
-
-fail_pages_alloc:
-	while (--i >= 0)
-		__free_page(buf->pages[i]);
-	kfree(buf->pages);
-
-fail_pages_array_alloc:
-	vfree(buf->sg_desc.sglist);
-
-fail_sglist_alloc:
-	kfree(buf);
-	return NULL;
-}
-
-static void vb2_dma_sg_put(void *buf_priv)
-{
-	struct vb2_dma_sg_buf *buf = buf_priv;
-	int i = buf->sg_desc.num_pages;
-
-	if (atomic_dec_and_test(&buf->refcount)) {
-		printk(KERN_DEBUG "%s: Freeing buffer of %d pages\n", __func__,
-			buf->sg_desc.num_pages);
-		if (buf->vaddr)
-			vm_unmap_ram(buf->vaddr, buf->sg_desc.num_pages);
-		vfree(buf->sg_desc.sglist);
-		while (--i >= 0)
-			__free_page(buf->pages[i]);
-		kfree(buf->pages);
-		kfree(buf);
-	}
-}
-
-static void *vb2_dma_sg_get_userptr(void *alloc_ctx, unsigned long vaddr,
-				    unsigned long size, int write)
-{
-	struct vb2_dma_sg_buf *buf;
-	unsigned long first, last;
-	int num_pages_from_user, i;
-
-	buf = kzalloc(sizeof *buf, GFP_KERNEL);
-	if (!buf)
-		return NULL;
-
-	buf->vaddr = NULL;
-	buf->write = write;
-	buf->offset = vaddr & ~PAGE_MASK;
-	buf->sg_desc.size = size;
-
-	first = (vaddr           & PAGE_MASK) >> PAGE_SHIFT;
-	last  = ((vaddr + size - 1) & PAGE_MASK) >> PAGE_SHIFT;
-	buf->sg_desc.num_pages = last - first + 1;
-
-	buf->sg_desc.sglist = vzalloc(
-		buf->sg_desc.num_pages * sizeof(*buf->sg_desc.sglist));
-	if (!buf->sg_desc.sglist)
-		goto userptr_fail_sglist_alloc;
-
-	sg_init_table(buf->sg_desc.sglist, buf->sg_desc.num_pages);
-
-	buf->pages = kzalloc(buf->sg_desc.num_pages * sizeof(struct page *),
-			     GFP_KERNEL);
-	if (!buf->pages)
-		goto userptr_fail_pages_array_alloc;
-
-	num_pages_from_user = get_user_pages(current, current->mm,
-					     vaddr & PAGE_MASK,
-					     buf->sg_desc.num_pages,
-					     write,
-					     1, /* force */
-					     buf->pages,
-					     NULL);
-
-	if (num_pages_from_user != buf->sg_desc.num_pages)
-		goto userptr_fail_get_user_pages;
-
-	sg_set_page(&buf->sg_desc.sglist[0], buf->pages[0],
-		    PAGE_SIZE - buf->offset, buf->offset);
-	size -= PAGE_SIZE - buf->offset;
-	for (i = 1; i < buf->sg_desc.num_pages; ++i) {
-		sg_set_page(&buf->sg_desc.sglist[i], buf->pages[i],
-			    min_t(size_t, PAGE_SIZE, size), 0);
-		size -= min_t(size_t, PAGE_SIZE, size);
-	}
-	return buf;
-
-userptr_fail_get_user_pages:
-	printk(KERN_DEBUG "get_user_pages requested/got: %d/%d]\n",
-	       num_pages_from_user, buf->sg_desc.num_pages);
-	while (--num_pages_from_user >= 0)
-		put_page(buf->pages[num_pages_from_user]);
-	kfree(buf->pages);
-
-userptr_fail_pages_array_alloc:
-	vfree(buf->sg_desc.sglist);
-
-userptr_fail_sglist_alloc:
-	kfree(buf);
-	return NULL;
-}
-
-/*
- * @put_userptr: inform the allocator that a USERPTR buffer will no longer
- *		 be used
- */
-static void vb2_dma_sg_put_userptr(void *buf_priv)
-{
-	struct vb2_dma_sg_buf *buf = buf_priv;
-	int i = buf->sg_desc.num_pages;
-
-	printk(KERN_DEBUG "%s: Releasing userspace buffer of %d pages\n",
-	       __func__, buf->sg_desc.num_pages);
-	if (buf->vaddr)
-		vm_unmap_ram(buf->vaddr, buf->sg_desc.num_pages);
-	while (--i >= 0) {
-		if (buf->write)
-			set_page_dirty_lock(buf->pages[i]);
-		put_page(buf->pages[i]);
-	}
-	vfree(buf->sg_desc.sglist);
-	kfree(buf->pages);
-	kfree(buf);
-}
-
-static void *vb2_dma_sg_vaddr(void *buf_priv)
-{
-	struct vb2_dma_sg_buf *buf = buf_priv;
-
-	BUG_ON(!buf);
-
-	if (!buf->vaddr)
-		buf->vaddr = vm_map_ram(buf->pages,
-					buf->sg_desc.num_pages,
-					-1,
-					PAGE_KERNEL);
-
-	/* add offset in case userptr is not page-aligned */
-	return buf->vaddr + buf->offset;
-}
-
-static unsigned int vb2_dma_sg_num_users(void *buf_priv)
-{
-	struct vb2_dma_sg_buf *buf = buf_priv;
-
-	return atomic_read(&buf->refcount);
-}
-
-static int vb2_dma_sg_mmap(void *buf_priv, struct vm_area_struct *vma)
-{
-	struct vb2_dma_sg_buf *buf = buf_priv;
-	unsigned long uaddr = vma->vm_start;
-	unsigned long usize = vma->vm_end - vma->vm_start;
-	int i = 0;
-
-	if (!buf) {
-		printk(KERN_ERR "No memory to map\n");
-		return -EINVAL;
-	}
-
-	do {
-		int ret;
-
-		ret = vm_insert_page(vma, uaddr, buf->pages[i++]);
-		if (ret) {
-			printk(KERN_ERR "Remapping memory, error: %d\n", ret);
-			return ret;
-		}
-
-		uaddr += PAGE_SIZE;
-		usize -= PAGE_SIZE;
-	} while (usize > 0);
-
-
-	/*
-	 * Use common vm_area operations to track buffer refcount.
-	 */
-	vma->vm_private_data	= &buf->handler;
-	vma->vm_ops		= &vb2_common_vm_ops;
-
-	vma->vm_ops->open(vma);
-
-	return 0;
-}
-
-static void *vb2_dma_sg_cookie(void *buf_priv)
-{
-	struct vb2_dma_sg_buf *buf = buf_priv;
-
-	return &buf->sg_desc;
-}
-
-const struct vb2_mem_ops vb2_dma_sg_memops = {
-	.alloc		= vb2_dma_sg_alloc,
-	.put		= vb2_dma_sg_put,
-	.get_userptr	= vb2_dma_sg_get_userptr,
-	.put_userptr	= vb2_dma_sg_put_userptr,
-	.vaddr		= vb2_dma_sg_vaddr,
-	.mmap		= vb2_dma_sg_mmap,
-	.num_users	= vb2_dma_sg_num_users,
-	.cookie		= vb2_dma_sg_cookie,
-};
-EXPORT_SYMBOL_GPL(vb2_dma_sg_memops);
-
-MODULE_DESCRIPTION("dma scatter/gather memory handling routines for videobuf2");
-MODULE_AUTHOR("Andrzej Pietrasiewicz");
-MODULE_LICENSE("GPL");
diff --git a/drivers/media/video/videobuf2-memops.c b/drivers/media/video/videobuf2-memops.c
deleted file mode 100644
index 504cd4cbe29e..000000000000
--- a/drivers/media/video/videobuf2-memops.c
+++ /dev/null
@@ -1,227 +0,0 @@
-/*
- * videobuf2-memops.c - generic memory handling routines for videobuf2
- *
- * Copyright (C) 2010 Samsung Electronics
- *
- * Author: Pawel Osciak <pawel@osciak.com>
- *	   Marek Szyprowski <m.szyprowski@samsung.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation.
- */
-
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <linux/dma-mapping.h>
-#include <linux/vmalloc.h>
-#include <linux/mm.h>
-#include <linux/sched.h>
-#include <linux/file.h>
-
-#include <media/videobuf2-core.h>
-#include <media/videobuf2-memops.h>
-
-/**
- * vb2_get_vma() - acquire and lock the virtual memory area
- * @vma:	given virtual memory area
- *
- * This function attempts to acquire an area mapped in the userspace for
- * the duration of a hardware operation. The area is "locked" by performing
- * the same set of operation that are done when process calls fork() and
- * memory areas are duplicated.
- *
- * Returns a copy of a virtual memory region on success or NULL.
- */
-struct vm_area_struct *vb2_get_vma(struct vm_area_struct *vma)
-{
-	struct vm_area_struct *vma_copy;
-
-	vma_copy = kmalloc(sizeof(*vma_copy), GFP_KERNEL);
-	if (vma_copy == NULL)
-		return NULL;
-
-	if (vma->vm_ops && vma->vm_ops->open)
-		vma->vm_ops->open(vma);
-
-	if (vma->vm_file)
-		get_file(vma->vm_file);
-
-	memcpy(vma_copy, vma, sizeof(*vma));
-
-	vma_copy->vm_mm = NULL;
-	vma_copy->vm_next = NULL;
-	vma_copy->vm_prev = NULL;
-
-	return vma_copy;
-}
-EXPORT_SYMBOL_GPL(vb2_get_vma);
-
-/**
- * vb2_put_userptr() - release a userspace virtual memory area
- * @vma:	virtual memory region associated with the area to be released
- *
- * This function releases the previously acquired memory area after a hardware
- * operation.
- */
-void vb2_put_vma(struct vm_area_struct *vma)
-{
-	if (!vma)
-		return;
-
-	if (vma->vm_ops && vma->vm_ops->close)
-		vma->vm_ops->close(vma);
-
-	if (vma->vm_file)
-		fput(vma->vm_file);
-
-	kfree(vma);
-}
-EXPORT_SYMBOL_GPL(vb2_put_vma);
-
-/**
- * vb2_get_contig_userptr() - lock physically contiguous userspace mapped memory
- * @vaddr:	starting virtual address of the area to be verified
- * @size:	size of the area
- * @res_paddr:	will return physical address for the given vaddr
- * @res_vma:	will return locked copy of struct vm_area for the given area
- *
- * This function will go through memory area of size @size mapped at @vaddr and
- * verify that the underlying physical pages are contiguous. If they are
- * contiguous the virtual memory area is locked and a @res_vma is filled with
- * the copy and @res_pa set to the physical address of the buffer.
- *
- * Returns 0 on success.
- */
-int vb2_get_contig_userptr(unsigned long vaddr, unsigned long size,
-			   struct vm_area_struct **res_vma, dma_addr_t *res_pa)
-{
-	struct mm_struct *mm = current->mm;
-	struct vm_area_struct *vma;
-	unsigned long offset, start, end;
-	unsigned long this_pfn, prev_pfn;
-	dma_addr_t pa = 0;
-
-	start = vaddr;
-	offset = start & ~PAGE_MASK;
-	end = start + size;
-
-	vma = find_vma(mm, start);
-
-	if (vma == NULL || vma->vm_end < end)
-		return -EFAULT;
-
-	for (prev_pfn = 0; start < end; start += PAGE_SIZE) {
-		int ret = follow_pfn(vma, start, &this_pfn);
-		if (ret)
-			return ret;
-
-		if (prev_pfn == 0)
-			pa = this_pfn << PAGE_SHIFT;
-		else if (this_pfn != prev_pfn + 1)
-			return -EFAULT;
-
-		prev_pfn = this_pfn;
-	}
-
-	/*
-	 * Memory is contigous, lock vma and return to the caller
-	 */
-	*res_vma = vb2_get_vma(vma);
-	if (*res_vma == NULL)
-		return -ENOMEM;
-
-	*res_pa = pa + offset;
-	return 0;
-}
-EXPORT_SYMBOL_GPL(vb2_get_contig_userptr);
-
-/**
- * vb2_mmap_pfn_range() - map physical pages to userspace
- * @vma:	virtual memory region for the mapping
- * @paddr:	starting physical address of the memory to be mapped
- * @size:	size of the memory to be mapped
- * @vm_ops:	vm operations to be assigned to the created area
- * @priv:	private data to be associated with the area
- *
- * Returns 0 on success.
- */
-int vb2_mmap_pfn_range(struct vm_area_struct *vma, unsigned long paddr,
-				unsigned long size,
-				const struct vm_operations_struct *vm_ops,
-				void *priv)
-{
-	int ret;
-
-	size = min_t(unsigned long, vma->vm_end - vma->vm_start, size);
-
-	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
-	ret = remap_pfn_range(vma, vma->vm_start, paddr >> PAGE_SHIFT,
-				size, vma->vm_page_prot);
-	if (ret) {
-		printk(KERN_ERR "Remapping memory failed, error: %d\n", ret);
-		return ret;
-	}
-
-	vma->vm_flags		|= VM_DONTEXPAND | VM_RESERVED;
-	vma->vm_private_data	= priv;
-	vma->vm_ops		= vm_ops;
-
-	vma->vm_ops->open(vma);
-
-	pr_debug("%s: mapped paddr 0x%08lx at 0x%08lx, size %ld\n",
-			__func__, paddr, vma->vm_start, size);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(vb2_mmap_pfn_range);
-
-/**
- * vb2_common_vm_open() - increase refcount of the vma
- * @vma:	virtual memory region for the mapping
- *
- * This function adds another user to the provided vma. It expects
- * struct vb2_vmarea_handler pointer in vma->vm_private_data.
- */
-static void vb2_common_vm_open(struct vm_area_struct *vma)
-{
-	struct vb2_vmarea_handler *h = vma->vm_private_data;
-
-	pr_debug("%s: %p, refcount: %d, vma: %08lx-%08lx\n",
-	       __func__, h, atomic_read(h->refcount), vma->vm_start,
-	       vma->vm_end);
-
-	atomic_inc(h->refcount);
-}
-
-/**
- * vb2_common_vm_close() - decrease refcount of the vma
- * @vma:	virtual memory region for the mapping
- *
- * This function releases the user from the provided vma. It expects
- * struct vb2_vmarea_handler pointer in vma->vm_private_data.
- */
-static void vb2_common_vm_close(struct vm_area_struct *vma)
-{
-	struct vb2_vmarea_handler *h = vma->vm_private_data;
-
-	pr_debug("%s: %p, refcount: %d, vma: %08lx-%08lx\n",
-	       __func__, h, atomic_read(h->refcount), vma->vm_start,
-	       vma->vm_end);
-
-	h->put(h->arg);
-}
-
-/**
- * vb2_common_vm_ops - common vm_ops used for tracking refcount of mmaped
- * video buffers
- */
-const struct vm_operations_struct vb2_common_vm_ops = {
-	.open = vb2_common_vm_open,
-	.close = vb2_common_vm_close,
-};
-EXPORT_SYMBOL_GPL(vb2_common_vm_ops);
-
-MODULE_DESCRIPTION("common memory handling routines for videobuf2");
-MODULE_AUTHOR("Pawel Osciak <pawel@osciak.com>");
-MODULE_LICENSE("GPL");
diff --git a/drivers/media/video/videobuf2-vmalloc.c b/drivers/media/video/videobuf2-vmalloc.c
deleted file mode 100644
index 94efa04d8d55..000000000000
--- a/drivers/media/video/videobuf2-vmalloc.c
+++ /dev/null
@@ -1,223 +0,0 @@
-/*
- * videobuf2-vmalloc.c - vmalloc memory allocator for videobuf2
- *
- * Copyright (C) 2010 Samsung Electronics
- *
- * Author: Pawel Osciak <pawel@osciak.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation.
- */
-
-#include <linux/io.h>
-#include <linux/module.h>
-#include <linux/mm.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-
-#include <media/videobuf2-core.h>
-#include <media/videobuf2-vmalloc.h>
-#include <media/videobuf2-memops.h>
-
-struct vb2_vmalloc_buf {
-	void				*vaddr;
-	struct page			**pages;
-	struct vm_area_struct		*vma;
-	int				write;
-	unsigned long			size;
-	unsigned int			n_pages;
-	atomic_t			refcount;
-	struct vb2_vmarea_handler	handler;
-};
-
-static void vb2_vmalloc_put(void *buf_priv);
-
-static void *vb2_vmalloc_alloc(void *alloc_ctx, unsigned long size)
-{
-	struct vb2_vmalloc_buf *buf;
-
-	buf = kzalloc(sizeof(*buf), GFP_KERNEL);
-	if (!buf)
-		return NULL;
-
-	buf->size = size;
-	buf->vaddr = vmalloc_user(buf->size);
-	buf->handler.refcount = &buf->refcount;
-	buf->handler.put = vb2_vmalloc_put;
-	buf->handler.arg = buf;
-
-	if (!buf->vaddr) {
-		pr_debug("vmalloc of size %ld failed\n", buf->size);
-		kfree(buf);
-		return NULL;
-	}
-
-	atomic_inc(&buf->refcount);
-	return buf;
-}
-
-static void vb2_vmalloc_put(void *buf_priv)
-{
-	struct vb2_vmalloc_buf *buf = buf_priv;
-
-	if (atomic_dec_and_test(&buf->refcount)) {
-		vfree(buf->vaddr);
-		kfree(buf);
-	}
-}
-
-static void *vb2_vmalloc_get_userptr(void *alloc_ctx, unsigned long vaddr,
-				     unsigned long size, int write)
-{
-	struct vb2_vmalloc_buf *buf;
-	unsigned long first, last;
-	int n_pages, offset;
-	struct vm_area_struct *vma;
-	dma_addr_t physp;
-
-	buf = kzalloc(sizeof(*buf), GFP_KERNEL);
-	if (!buf)
-		return NULL;
-
-	buf->write = write;
-	offset = vaddr & ~PAGE_MASK;
-	buf->size = size;
-
-
-	vma = find_vma(current->mm, vaddr);
-	if (vma && (vma->vm_flags & VM_PFNMAP) && (vma->vm_pgoff)) {
-		if (vb2_get_contig_userptr(vaddr, size, &vma, &physp))
-			goto fail_pages_array_alloc;
-		buf->vma = vma;
-		buf->vaddr = ioremap_nocache(physp, size);
-		if (!buf->vaddr)
-			goto fail_pages_array_alloc;
-	} else {
-		first = vaddr >> PAGE_SHIFT;
-		last  = (vaddr + size - 1) >> PAGE_SHIFT;
-		buf->n_pages = last - first + 1;
-		buf->pages = kzalloc(buf->n_pages * sizeof(struct page *),
-				     GFP_KERNEL);
-		if (!buf->pages)
-			goto fail_pages_array_alloc;
-
-		/* current->mm->mmap_sem is taken by videobuf2 core */
-		n_pages = get_user_pages(current, current->mm,
-					 vaddr & PAGE_MASK, buf->n_pages,
-					 write, 1, /* force */
-					 buf->pages, NULL);
-		if (n_pages != buf->n_pages)
-			goto fail_get_user_pages;
-
-		buf->vaddr = vm_map_ram(buf->pages, buf->n_pages, -1,
-					PAGE_KERNEL);
-		if (!buf->vaddr)
-			goto fail_get_user_pages;
-	}
-
-	buf->vaddr += offset;
-	return buf;
-
-fail_get_user_pages:
-	pr_debug("get_user_pages requested/got: %d/%d]\n", n_pages,
-		 buf->n_pages);
-	while (--n_pages >= 0)
-		put_page(buf->pages[n_pages]);
-	kfree(buf->pages);
-
-fail_pages_array_alloc:
-	kfree(buf);
-
-	return NULL;
-}
-
-static void vb2_vmalloc_put_userptr(void *buf_priv)
-{
-	struct vb2_vmalloc_buf *buf = buf_priv;
-	unsigned long vaddr = (unsigned long)buf->vaddr & PAGE_MASK;
-	unsigned int i;
-
-	if (buf->pages) {
-		if (vaddr)
-			vm_unmap_ram((void *)vaddr, buf->n_pages);
-		for (i = 0; i < buf->n_pages; ++i) {
-			if (buf->write)
-				set_page_dirty_lock(buf->pages[i]);
-			put_page(buf->pages[i]);
-		}
-		kfree(buf->pages);
-	} else {
-		if (buf->vma)
-			vb2_put_vma(buf->vma);
-		iounmap(buf->vaddr);
-	}
-	kfree(buf);
-}
-
-static void *vb2_vmalloc_vaddr(void *buf_priv)
-{
-	struct vb2_vmalloc_buf *buf = buf_priv;
-
-	if (!buf->vaddr) {
-		pr_err("Address of an unallocated plane requested "
-		       "or cannot map user pointer\n");
-		return NULL;
-	}
-
-	return buf->vaddr;
-}
-
-static unsigned int vb2_vmalloc_num_users(void *buf_priv)
-{
-	struct vb2_vmalloc_buf *buf = buf_priv;
-	return atomic_read(&buf->refcount);
-}
-
-static int vb2_vmalloc_mmap(void *buf_priv, struct vm_area_struct *vma)
-{
-	struct vb2_vmalloc_buf *buf = buf_priv;
-	int ret;
-
-	if (!buf) {
-		pr_err("No memory to map\n");
-		return -EINVAL;
-	}
-
-	ret = remap_vmalloc_range(vma, buf->vaddr, 0);
-	if (ret) {
-		pr_err("Remapping vmalloc memory, error: %d\n", ret);
-		return ret;
-	}
-
-	/*
-	 * Make sure that vm_areas for 2 buffers won't be merged together
-	 */
-	vma->vm_flags		|= VM_DONTEXPAND;
-
-	/*
-	 * Use common vm_area operations to track buffer refcount.
-	 */
-	vma->vm_private_data	= &buf->handler;
-	vma->vm_ops		= &vb2_common_vm_ops;
-
-	vma->vm_ops->open(vma);
-
-	return 0;
-}
-
-const struct vb2_mem_ops vb2_vmalloc_memops = {
-	.alloc		= vb2_vmalloc_alloc,
-	.put		= vb2_vmalloc_put,
-	.get_userptr	= vb2_vmalloc_get_userptr,
-	.put_userptr	= vb2_vmalloc_put_userptr,
-	.vaddr		= vb2_vmalloc_vaddr,
-	.mmap		= vb2_vmalloc_mmap,
-	.num_users	= vb2_vmalloc_num_users,
-};
-EXPORT_SYMBOL_GPL(vb2_vmalloc_memops);
-
-MODULE_DESCRIPTION("vmalloc memory handling routines for videobuf2");
-MODULE_AUTHOR("Pawel Osciak <pawel@osciak.com>");
-MODULE_LICENSE("GPL");