Merge remote-tracking branch 'master' into queue

Merge reason: development work has dependency on kvm patches merged
upstream.

Conflicts:
	arch/powerpc/include/asm/Kbuild
	arch/powerpc/include/asm/kvm_para.h

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

1 files changed, 1719 insertions, 0 deletions

diff --git a/drivers/media/usb/usbvision/usbvision-video.c b/drivers/media/usb/usbvision/usbvision-video.c
new file mode 100644
index 000000000000..5c36a57e6590
--- /dev/null
+++ b/drivers/media/usb/usbvision/usbvision-video.c
@@ -0,0 +1,1719 @@
+/*
+ * USB USBVISION Video device driver 0.9.10
+ *
+ *
+ *
+ * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de>
+ *
+ * This module is part of usbvision driver project.
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Let's call the version 0.... until compression decoding is completely
+ * implemented.
+ *
+ * This driver is written by Jose Ignacio Gijon and Joerg Heckenbach.
+ * It was based on USB CPiA driver written by Peter Pregler,
+ * Scott J. Bertin and Johannes Erdfelt
+ * Ideas are taken from bttv driver by Ralph Metzler, Marcus Metzler &
+ * Gerd Knorr and zoran 36120/36125 driver by Pauline Middelink
+ * Updates to driver completed by Dwaine P. Garden
+ *
+ *
+ * TODO:
+ *     - use submit_urb for all setup packets
+ *     - Fix memory settings for nt1004. It is 4 times as big as the
+ *       nt1003 memory.
+ *     - Add audio on endpoint 3 for nt1004 chip.
+ *         Seems impossible, needs a codec interface.  Which one?
+ *     - Clean up the driver.
+ *     - optimization for performance.
+ *     - Add Videotext capability (VBI).  Working on it.....
+ *     - Check audio for other devices
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/timer.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/highmem.h>
+#include <linux/vmalloc.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/io.h>
+#include <linux/videodev2.h>
+#include <linux/i2c.h>
+
+#include <media/saa7115.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
+#include <media/tuner.h>
+
+#include <linux/workqueue.h>
+
+#include "usbvision.h"
+#include "usbvision-cards.h"
+
+#define DRIVER_AUTHOR					\
+	"Joerg Heckenbach <joerg@heckenbach-aw.de>, "	\
+	"Dwaine Garden <DwaineGarden@rogers.com>"
+#define DRIVER_NAME "usbvision"
+#define DRIVER_ALIAS "USBVision"
+#define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
+#define DRIVER_LICENSE "GPL"
+#define USBVISION_VERSION_STRING "0.9.11"
+
+#define	ENABLE_HEXDUMP	0	/* Enable if you need it */
+
+
+#ifdef USBVISION_DEBUG
+	#define PDEBUG(level, fmt, args...) { \
+		if (video_debug & (level)) \
+			printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \
+				__func__, __LINE__ , ## args); \
+	}
+#else
+	#define PDEBUG(level, fmt, args...) do {} while (0)
+#endif
+
+#define DBG_IO		(1 << 1)
+#define DBG_PROBE	(1 << 2)
+#define DBG_MMAP	(1 << 3)
+
+/* String operations */
+#define rmspace(str)	while (*str == ' ') str++;
+#define goto2next(str)	while (*str != ' ') str++; while (*str == ' ') str++;
+
+
+/* sequential number of usbvision device */
+static int usbvision_nr;
+
+static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
+	{ 1, 1,  8, V4L2_PIX_FMT_GREY    , "GREY" },
+	{ 1, 2, 16, V4L2_PIX_FMT_RGB565  , "RGB565" },
+	{ 1, 3, 24, V4L2_PIX_FMT_RGB24   , "RGB24" },
+	{ 1, 4, 32, V4L2_PIX_FMT_RGB32   , "RGB32" },
+	{ 1, 2, 16, V4L2_PIX_FMT_RGB555  , "RGB555" },
+	{ 1, 2, 16, V4L2_PIX_FMT_YUYV    , "YUV422" },
+	{ 1, 2, 12, V4L2_PIX_FMT_YVU420  , "YUV420P" }, /* 1.5 ! */
+	{ 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
+};
+
+/* Function prototypes */
+static void usbvision_release(struct usb_usbvision *usbvision);
+
+/* Default initialization of device driver parameters */
+/* Set the default format for ISOC endpoint */
+static int isoc_mode = ISOC_MODE_COMPRESS;
+/* Set the default Debug Mode of the device driver */
+static int video_debug;
+/* Set the default device to power on at startup */
+static int power_on_at_open = 1;
+/* Sequential Number of Video Device */
+static int video_nr = -1;
+/* Sequential Number of Radio Device */
+static int radio_nr = -1;
+
+/* Grab parameters for the device driver */
+
+/* Showing parameters under SYSFS */
+module_param(isoc_mode, int, 0444);
+module_param(video_debug, int, 0444);
+module_param(power_on_at_open, int, 0444);
+module_param(video_nr, int, 0444);
+module_param(radio_nr, int, 0444);
+
+MODULE_PARM_DESC(isoc_mode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
+MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
+MODULE_PARM_DESC(power_on_at_open, " Set the default device to power on when device is opened.  Default: 1 (On)");
+MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
+MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
+
+
+/* Misc stuff */
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE(DRIVER_LICENSE);
+MODULE_VERSION(USBVISION_VERSION_STRING);
+MODULE_ALIAS(DRIVER_ALIAS);
+
+
+/*****************************************************************************/
+/* SYSFS Code - Copied from the stv680.c usb module.			     */
+/* Device information is located at /sys/class/video4linux/video0            */
+/* Device parameters information is located at /sys/module/usbvision         */
+/* Device USB Information is located at                                      */
+/*   /sys/bus/usb/drivers/USBVision Video Grabber                            */
+/*****************************************************************************/
+
+#define YES_NO(x) ((x) ? "Yes" : "No")
+
+static inline struct usb_usbvision *cd_to_usbvision(struct device *cd)
+{
+	struct video_device *vdev =
+		container_of(cd, struct video_device, dev);
+	return video_get_drvdata(vdev);
+}
+
+static ssize_t show_version(struct device *cd,
+			    struct device_attribute *attr, char *buf)
+{
+	return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
+}
+static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
+
+static ssize_t show_model(struct device *cd,
+			  struct device_attribute *attr, char *buf)
+{
+	struct video_device *vdev =
+		container_of(cd, struct video_device, dev);
+	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
+	return sprintf(buf, "%s\n",
+		       usbvision_device_data[usbvision->dev_model].model_string);
+}
+static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
+
+static ssize_t show_hue(struct device *cd,
+			struct device_attribute *attr, char *buf)
+{
+	struct video_device *vdev =
+		container_of(cd, struct video_device, dev);
+	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
+	struct v4l2_control ctrl;
+	ctrl.id = V4L2_CID_HUE;
+	ctrl.value = 0;
+	if (usbvision->user)
+		call_all(usbvision, core, g_ctrl, &ctrl);
+	return sprintf(buf, "%d\n", ctrl.value);
+}
+static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
+
+static ssize_t show_contrast(struct device *cd,
+			     struct device_attribute *attr, char *buf)
+{
+	struct video_device *vdev =
+		container_of(cd, struct video_device, dev);
+	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
+	struct v4l2_control ctrl;
+	ctrl.id = V4L2_CID_CONTRAST;
+	ctrl.value = 0;
+	if (usbvision->user)
+		call_all(usbvision, core, g_ctrl, &ctrl);
+	return sprintf(buf, "%d\n", ctrl.value);
+}
+static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
+
+static ssize_t show_brightness(struct device *cd,
+			       struct device_attribute *attr, char *buf)
+{
+	struct video_device *vdev =
+		container_of(cd, struct video_device, dev);
+	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
+	struct v4l2_control ctrl;
+	ctrl.id = V4L2_CID_BRIGHTNESS;
+	ctrl.value = 0;
+	if (usbvision->user)
+		call_all(usbvision, core, g_ctrl, &ctrl);
+	return sprintf(buf, "%d\n", ctrl.value);
+}
+static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
+
+static ssize_t show_saturation(struct device *cd,
+			       struct device_attribute *attr, char *buf)
+{
+	struct video_device *vdev =
+		container_of(cd, struct video_device, dev);
+	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
+	struct v4l2_control ctrl;
+	ctrl.id = V4L2_CID_SATURATION;
+	ctrl.value = 0;
+	if (usbvision->user)
+		call_all(usbvision, core, g_ctrl, &ctrl);
+	return sprintf(buf, "%d\n", ctrl.value);
+}
+static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
+
+static ssize_t show_streaming(struct device *cd,
+			      struct device_attribute *attr, char *buf)
+{
+	struct video_device *vdev =
+		container_of(cd, struct video_device, dev);
+	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
+	return sprintf(buf, "%s\n",
+		       YES_NO(usbvision->streaming == stream_on ? 1 : 0));
+}
+static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
+
+static ssize_t show_compression(struct device *cd,
+				struct device_attribute *attr, char *buf)
+{
+	struct video_device *vdev =
+		container_of(cd, struct video_device, dev);
+	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
+	return sprintf(buf, "%s\n",
+		       YES_NO(usbvision->isoc_mode == ISOC_MODE_COMPRESS));
+}
+static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
+
+static ssize_t show_device_bridge(struct device *cd,
+				  struct device_attribute *attr, char *buf)
+{
+	struct video_device *vdev =
+		container_of(cd, struct video_device, dev);
+	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
+	return sprintf(buf, "%d\n", usbvision->bridge_type);
+}
+static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
+
+static void usbvision_create_sysfs(struct video_device *vdev)
+{
+	int res;
+
+	if (!vdev)
+		return;
+	do {
+		res = device_create_file(&vdev->dev, &dev_attr_version);
+		if (res < 0)
+			break;
+		res = device_create_file(&vdev->dev, &dev_attr_model);
+		if (res < 0)
+			break;
+		res = device_create_file(&vdev->dev, &dev_attr_hue);
+		if (res < 0)
+			break;
+		res = device_create_file(&vdev->dev, &dev_attr_contrast);
+		if (res < 0)
+			break;
+		res = device_create_file(&vdev->dev, &dev_attr_brightness);
+		if (res < 0)
+			break;
+		res = device_create_file(&vdev->dev, &dev_attr_saturation);
+		if (res < 0)
+			break;
+		res = device_create_file(&vdev->dev, &dev_attr_streaming);
+		if (res < 0)
+			break;
+		res = device_create_file(&vdev->dev, &dev_attr_compression);
+		if (res < 0)
+			break;
+		res = device_create_file(&vdev->dev, &dev_attr_bridge);
+		if (res >= 0)
+			return;
+	} while (0);
+
+	dev_err(&vdev->dev, "%s error: %d\n", __func__, res);
+}
+
+static void usbvision_remove_sysfs(struct video_device *vdev)
+{
+	if (vdev) {
+		device_remove_file(&vdev->dev, &dev_attr_version);
+		device_remove_file(&vdev->dev, &dev_attr_model);
+		device_remove_file(&vdev->dev, &dev_attr_hue);
+		device_remove_file(&vdev->dev, &dev_attr_contrast);
+		device_remove_file(&vdev->dev, &dev_attr_brightness);
+		device_remove_file(&vdev->dev, &dev_attr_saturation);
+		device_remove_file(&vdev->dev, &dev_attr_streaming);
+		device_remove_file(&vdev->dev, &dev_attr_compression);
+		device_remove_file(&vdev->dev, &dev_attr_bridge);
+	}
+}
+
+/*
+ * usbvision_open()
+ *
+ * This is part of Video 4 Linux API. The driver can be opened by one
+ * client only (checks internal counter 'usbvision->user'). The procedure
+ * then allocates buffers needed for video processing.
+ *
+ */
+static int usbvision_v4l2_open(struct file *file)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+	int err_code = 0;
+
+	PDEBUG(DBG_IO, "open");
+
+	if (mutex_lock_interruptible(&usbvision->v4l2_lock))
+		return -ERESTARTSYS;
+	usbvision_reset_power_off_timer(usbvision);
+
+	if (usbvision->user)
+		err_code = -EBUSY;
+	else {
+		/* Allocate memory for the scratch ring buffer */
+		err_code = usbvision_scratch_alloc(usbvision);
+		if (isoc_mode == ISOC_MODE_COMPRESS) {
+			/* Allocate intermediate decompression buffers
+			   only if needed */
+			err_code = usbvision_decompress_alloc(usbvision);
+		}
+		if (err_code) {
+			/* Deallocate all buffers if trouble */
+			usbvision_scratch_free(usbvision);
+			usbvision_decompress_free(usbvision);
+		}
+	}
+
+	/* If so far no errors then we shall start the camera */
+	if (!err_code) {
+		if (usbvision->power == 0) {
+			usbvision_power_on(usbvision);
+			usbvision_i2c_register(usbvision);
+		}
+
+		/* Send init sequence only once, it's large! */
+		if (!usbvision->initialized) {
+			int setup_ok = 0;
+			setup_ok = usbvision_setup(usbvision, isoc_mode);
+			if (setup_ok)
+				usbvision->initialized = 1;
+			else
+				err_code = -EBUSY;
+		}
+
+		if (!err_code) {
+			usbvision_begin_streaming(usbvision);
+			err_code = usbvision_init_isoc(usbvision);
+			/* device must be initialized before isoc transfer */
+			usbvision_muxsel(usbvision, 0);
+			usbvision->user++;
+		} else {
+			if (power_on_at_open) {
+				usbvision_i2c_unregister(usbvision);
+				usbvision_power_off(usbvision);
+				usbvision->initialized = 0;
+			}
+		}
+	}
+
+	/* prepare queues */
+	usbvision_empty_framequeues(usbvision);
+	mutex_unlock(&usbvision->v4l2_lock);
+
+	PDEBUG(DBG_IO, "success");
+	return err_code;
+}
+
+/*
+ * usbvision_v4l2_close()
+ *
+ * This is part of Video 4 Linux API. The procedure
+ * stops streaming and deallocates all buffers that were earlier
+ * allocated in usbvision_v4l2_open().
+ *
+ */
+static int usbvision_v4l2_close(struct file *file)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+
+	PDEBUG(DBG_IO, "close");
+
+	mutex_lock(&usbvision->v4l2_lock);
+	usbvision_audio_off(usbvision);
+	usbvision_restart_isoc(usbvision);
+	usbvision_stop_isoc(usbvision);
+
+	usbvision_decompress_free(usbvision);
+	usbvision_frames_free(usbvision);
+	usbvision_empty_framequeues(usbvision);
+	usbvision_scratch_free(usbvision);
+
+	usbvision->user--;
+
+	if (power_on_at_open) {
+		/* power off in a little while
+		   to avoid off/on every close/open short sequences */
+		usbvision_set_power_off_timer(usbvision);
+		usbvision->initialized = 0;
+	}
+
+	if (usbvision->remove_pending) {
+		printk(KERN_INFO "%s: Final disconnect\n", __func__);
+		usbvision_release(usbvision);
+	}
+	mutex_unlock(&usbvision->v4l2_lock);
+
+	PDEBUG(DBG_IO, "success");
+	return 0;
+}
+
+
+/*
+ * usbvision_ioctl()
+ *
+ * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
+ *
+ */
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+static int vidioc_g_register(struct file *file, void *priv,
+				struct v4l2_dbg_register *reg)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+	int err_code;
+
+	if (!v4l2_chip_match_host(&reg->match))
+		return -EINVAL;
+	/* NT100x has a 8-bit register space */
+	err_code = usbvision_read_reg(usbvision, reg->reg&0xff);
+	if (err_code < 0) {
+		dev_err(&usbvision->vdev->dev,
+			"%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
+				__func__, err_code);
+		return err_code;
+	}
+	reg->val = err_code;
+	reg->size = 1;
+	return 0;
+}
+
+static int vidioc_s_register(struct file *file, void *priv,
+				struct v4l2_dbg_register *reg)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+	int err_code;
+
+	if (!v4l2_chip_match_host(&reg->match))
+		return -EINVAL;
+	/* NT100x has a 8-bit register space */
+	err_code = usbvision_write_reg(usbvision, reg->reg & 0xff, reg->val);
+	if (err_code < 0) {
+		dev_err(&usbvision->vdev->dev,
+			"%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
+				__func__, err_code);
+		return err_code;
+	}
+	return 0;
+}
+#endif
+
+static int vidioc_querycap(struct file *file, void  *priv,
+					struct v4l2_capability *vc)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+
+	strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
+	strlcpy(vc->card,
+		usbvision_device_data[usbvision->dev_model].model_string,
+		sizeof(vc->card));
+	usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
+	vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
+		V4L2_CAP_AUDIO |
+		V4L2_CAP_READWRITE |
+		V4L2_CAP_STREAMING |
+		(usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
+	return 0;
+}
+
+static int vidioc_enum_input(struct file *file, void *priv,
+				struct v4l2_input *vi)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+	int chan;
+
+	if (vi->index >= usbvision->video_inputs)
+		return -EINVAL;
+	if (usbvision->have_tuner)
+		chan = vi->index;
+	else
+		chan = vi->index + 1; /* skip Television string*/
+
+	/* Determine the requested input characteristics
+	   specific for each usbvision card model */
+	switch (chan) {
+	case 0:
+		if (usbvision_device_data[usbvision->dev_model].video_channels == 4) {
+			strcpy(vi->name, "White Video Input");
+		} else {
+			strcpy(vi->name, "Television");
+			vi->type = V4L2_INPUT_TYPE_TUNER;
+			vi->audioset = 1;
+			vi->tuner = chan;
+			vi->std = USBVISION_NORMS;
+		}
+		break;
+	case 1:
+		vi->type = V4L2_INPUT_TYPE_CAMERA;
+		if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
+			strcpy(vi->name, "Green Video Input");
+		else
+			strcpy(vi->name, "Composite Video Input");
+		vi->std = V4L2_STD_PAL;
+		break;
+	case 2:
+		vi->type = V4L2_INPUT_TYPE_CAMERA;
+		if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
+			strcpy(vi->name, "Yellow Video Input");
+		else
+			strcpy(vi->name, "S-Video Input");
+		vi->std = V4L2_STD_PAL;
+		break;
+	case 3:
+		vi->type = V4L2_INPUT_TYPE_CAMERA;
+		strcpy(vi->name, "Red Video Input");
+		vi->std = V4L2_STD_PAL;
+		break;
+	}
+	return 0;
+}
+
+static int vidioc_g_input(struct file *file, void *priv, unsigned int *input)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+
+	*input = usbvision->ctl_input;
+	return 0;
+}
+
+static int vidioc_s_input(struct file *file, void *priv, unsigned int input)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+
+	if (input >= usbvision->video_inputs)
+		return -EINVAL;
+
+	usbvision_muxsel(usbvision, input);
+	usbvision_set_input(usbvision);
+	usbvision_set_output(usbvision,
+			     usbvision->curwidth,
+			     usbvision->curheight);
+	return 0;
+}
+
+static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *id)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+
+	usbvision->tvnorm_id = *id;
+
+	call_all(usbvision, core, s_std, usbvision->tvnorm_id);
+	/* propagate the change to the decoder */
+	usbvision_muxsel(usbvision, usbvision->ctl_input);
+
+	return 0;
+}
+
+static int vidioc_g_tuner(struct file *file, void *priv,
+				struct v4l2_tuner *vt)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+
+	if (!usbvision->have_tuner || vt->index)	/* Only tuner 0 */
+		return -EINVAL;
+	if (usbvision->radio) {
+		strcpy(vt->name, "Radio");
+		vt->type = V4L2_TUNER_RADIO;
+	} else {
+		strcpy(vt->name, "Television");
+	}
+	/* Let clients fill in the remainder of this struct */
+	call_all(usbvision, tuner, g_tuner, vt);
+
+	return 0;
+}
+
+static int vidioc_s_tuner(struct file *file, void *priv,
+				struct v4l2_tuner *vt)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+
+	/* Only no or one tuner for now */
+	if (!usbvision->have_tuner || vt->index)
+		return -EINVAL;
+	/* let clients handle this */
+	call_all(usbvision, tuner, s_tuner, vt);
+
+	return 0;
+}
+
+static int vidioc_g_frequency(struct file *file, void *priv,
+				struct v4l2_frequency *freq)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+
+	freq->tuner = 0; /* Only one tuner */
+	if (usbvision->radio)
+		freq->type = V4L2_TUNER_RADIO;
+	else
+		freq->type = V4L2_TUNER_ANALOG_TV;
+	freq->frequency = usbvision->freq;
+
+	return 0;
+}
+
+static int vidioc_s_frequency(struct file *file, void *priv,
+				struct v4l2_frequency *freq)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+
+	/* Only no or one tuner for now */
+	if (!usbvision->have_tuner || freq->tuner)
+		return -EINVAL;
+
+	usbvision->freq = freq->frequency;
+	call_all(usbvision, tuner, s_frequency, freq);
+
+	return 0;
+}
+
+static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+
+	if (usbvision->radio)
+		strcpy(a->name, "Radio");
+	else
+		strcpy(a->name, "TV");
+
+	return 0;
+}
+
+static int vidioc_s_audio(struct file *file, void *fh,
+			  const struct v4l2_audio *a)
+{
+	if (a->index)
+		return -EINVAL;
+	return 0;
+}
+
+static int vidioc_queryctrl(struct file *file, void *priv,
+			    struct v4l2_queryctrl *ctrl)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+
+	call_all(usbvision, core, queryctrl, ctrl);
+
+	if (!ctrl->type)
+		return -EINVAL;
+
+	return 0;
+}
+
+static int vidioc_g_ctrl(struct file *file, void *priv,
+				struct v4l2_control *ctrl)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+
+	call_all(usbvision, core, g_ctrl, ctrl);
+	return 0;
+}
+
+static int vidioc_s_ctrl(struct file *file, void *priv,
+				struct v4l2_control *ctrl)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+
+	call_all(usbvision, core, s_ctrl, ctrl);
+	return 0;
+}
+
+static int vidioc_reqbufs(struct file *file,
+			   void *priv, struct v4l2_requestbuffers *vr)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+	int ret;
+
+	RESTRICT_TO_RANGE(vr->count, 1, USBVISION_NUMFRAMES);
+
+	/* Check input validity:
+	   the user must do a VIDEO CAPTURE and MMAP method. */
+	if (vr->memory != V4L2_MEMORY_MMAP)
+		return -EINVAL;
+
+	if (usbvision->streaming == stream_on) {
+		ret = usbvision_stream_interrupt(usbvision);
+		if (ret)
+			return ret;
+	}
+
+	usbvision_frames_free(usbvision);
+	usbvision_empty_framequeues(usbvision);
+	vr->count = usbvision_frames_alloc(usbvision, vr->count);
+
+	usbvision->cur_frame = NULL;
+
+	return 0;
+}
+
+static int vidioc_querybuf(struct file *file,
+			    void *priv, struct v4l2_buffer *vb)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+	struct usbvision_frame *frame;
+
+	/* FIXME : must control
+	   that buffers are mapped (VIDIOC_REQBUFS has been called) */
+	if (vb->index >= usbvision->num_frames)
+		return -EINVAL;
+	/* Updating the corresponding frame state */
+	vb->flags = 0;
+	frame = &usbvision->frame[vb->index];
+	if (frame->grabstate >= frame_state_ready)
+		vb->flags |= V4L2_BUF_FLAG_QUEUED;
+	if (frame->grabstate >= frame_state_done)
+		vb->flags |= V4L2_BUF_FLAG_DONE;
+	if (frame->grabstate == frame_state_unused)
+		vb->flags |= V4L2_BUF_FLAG_MAPPED;
+	vb->memory = V4L2_MEMORY_MMAP;
+
+	vb->m.offset = vb->index * PAGE_ALIGN(usbvision->max_frame_size);
+
+	vb->memory = V4L2_MEMORY_MMAP;
+	vb->field = V4L2_FIELD_NONE;
+	vb->length = usbvision->curwidth *
+		usbvision->curheight *
+		usbvision->palette.bytes_per_pixel;
+	vb->timestamp = usbvision->frame[vb->index].timestamp;
+	vb->sequence = usbvision->frame[vb->index].sequence;
+	return 0;
+}
+
+static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+	struct usbvision_frame *frame;
+	unsigned long lock_flags;
+
+	/* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
+	if (vb->index >= usbvision->num_frames)
+		return -EINVAL;
+
+	frame = &usbvision->frame[vb->index];
+
+	if (frame->grabstate != frame_state_unused)
+		return -EAGAIN;
+
+	/* Mark it as ready and enqueue frame */
+	frame->grabstate = frame_state_ready;
+	frame->scanstate = scan_state_scanning;
+	frame->scanlength = 0;	/* Accumulated in usbvision_parse_data() */
+
+	vb->flags &= ~V4L2_BUF_FLAG_DONE;
+
+	/* set v4l2_format index */
+	frame->v4l2_format = usbvision->palette;
+
+	spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
+	list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
+	spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
+
+	return 0;
+}
+
+static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+	int ret;
+	struct usbvision_frame *f;
+	unsigned long lock_flags;
+
+	if (list_empty(&(usbvision->outqueue))) {
+		if (usbvision->streaming == stream_idle)
+			return -EINVAL;
+		ret = wait_event_interruptible
+			(usbvision->wait_frame,
+			 !list_empty(&(usbvision->outqueue)));
+		if (ret)
+			return ret;
+	}
+
+	spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
+	f = list_entry(usbvision->outqueue.next,
+		       struct usbvision_frame, frame);
+	list_del(usbvision->outqueue.next);
+	spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
+
+	f->grabstate = frame_state_unused;
+
+	vb->memory = V4L2_MEMORY_MMAP;
+	vb->flags = V4L2_BUF_FLAG_MAPPED |
+		V4L2_BUF_FLAG_QUEUED |
+		V4L2_BUF_FLAG_DONE;
+	vb->index = f->index;
+	vb->sequence = f->sequence;
+	vb->timestamp = f->timestamp;
+	vb->field = V4L2_FIELD_NONE;
+	vb->bytesused = f->scanlength;
+
+	return 0;
+}
+
+static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+
+	usbvision->streaming = stream_on;
+	call_all(usbvision, video, s_stream, 1);
+
+	return 0;
+}
+
+static int vidioc_streamoff(struct file *file,
+			    void *priv, enum v4l2_buf_type type)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+
+	if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+		return -EINVAL;
+
+	if (usbvision->streaming == stream_on) {
+		usbvision_stream_interrupt(usbvision);
+		/* Stop all video streamings */
+		call_all(usbvision, video, s_stream, 0);
+	}
+	usbvision_empty_framequeues(usbvision);
+
+	return 0;
+}
+
+static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
+					struct v4l2_fmtdesc *vfd)
+{
+	if (vfd->index >= USBVISION_SUPPORTED_PALETTES - 1)
+		return -EINVAL;
+	strcpy(vfd->description, usbvision_v4l2_format[vfd->index].desc);
+	vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
+	return 0;
+}
+
+static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
+					struct v4l2_format *vf)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+	vf->fmt.pix.width = usbvision->curwidth;
+	vf->fmt.pix.height = usbvision->curheight;
+	vf->fmt.pix.pixelformat = usbvision->palette.format;
+	vf->fmt.pix.bytesperline =
+		usbvision->curwidth * usbvision->palette.bytes_per_pixel;
+	vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline * usbvision->curheight;
+	vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
+	vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
+
+	return 0;
+}
+
+static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
+			       struct v4l2_format *vf)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+	int format_idx;
+
+	/* Find requested format in available ones */
+	for (format_idx = 0; format_idx < USBVISION_SUPPORTED_PALETTES; format_idx++) {
+		if (vf->fmt.pix.pixelformat ==
+		   usbvision_v4l2_format[format_idx].format) {
+			usbvision->palette = usbvision_v4l2_format[format_idx];
+			break;
+		}
+	}
+	/* robustness */
+	if (format_idx == USBVISION_SUPPORTED_PALETTES)
+		return -EINVAL;
+	RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
+	RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
+
+	vf->fmt.pix.bytesperline = vf->fmt.pix.width*
+		usbvision->palette.bytes_per_pixel;
+	vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
+
+	return 0;
+}
+
+static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
+			       struct v4l2_format *vf)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+	int ret;
+
+	ret = vidioc_try_fmt_vid_cap(file, priv, vf);
+	if (ret)
+		return ret;
+
+	/* stop io in case it is already in progress */
+	if (usbvision->streaming == stream_on) {
+		ret = usbvision_stream_interrupt(usbvision);
+		if (ret)
+			return ret;
+	}
+	usbvision_frames_free(usbvision);
+	usbvision_empty_framequeues(usbvision);
+
+	usbvision->cur_frame = NULL;
+
+	/* by now we are committed to the new data... */
+	usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
+
+	return 0;
+}
+
+static ssize_t usbvision_read(struct file *file, char __user *buf,
+		      size_t count, loff_t *ppos)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+	int noblock = file->f_flags & O_NONBLOCK;
+	unsigned long lock_flags;
+	int ret, i;
+	struct usbvision_frame *frame;
+
+	PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
+	       (unsigned long)count, noblock);
+
+	if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
+		return -EFAULT;
+
+	/* This entry point is compatible with the mmap routines
+	   so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
+	   to get frames or call read on the device. */
+	if (!usbvision->num_frames) {
+		/* First, allocate some frames to work with
+		   if this has not been done with VIDIOC_REQBUF */
+		usbvision_frames_free(usbvision);
+		usbvision_empty_framequeues(usbvision);
+		usbvision_frames_alloc(usbvision, USBVISION_NUMFRAMES);
+	}
+
+	if (usbvision->streaming != stream_on) {
+		/* no stream is running, make it running ! */
+		usbvision->streaming = stream_on;
+		call_all(usbvision, video, s_stream, 1);
+	}
+
+	/* Then, enqueue as many frames as possible
+	   (like a user of VIDIOC_QBUF would do) */
+	for (i = 0; i < usbvision->num_frames; i++) {
+		frame = &usbvision->frame[i];
+		if (frame->grabstate == frame_state_unused) {
+			/* Mark it as ready and enqueue frame */
+			frame->grabstate = frame_state_ready;
+			frame->scanstate = scan_state_scanning;
+			/* Accumulated in usbvision_parse_data() */
+			frame->scanlength = 0;
+
+			/* set v4l2_format index */
+			frame->v4l2_format = usbvision->palette;
+
+			spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
+			list_add_tail(&frame->frame, &usbvision->inqueue);
+			spin_unlock_irqrestore(&usbvision->queue_lock,
+					       lock_flags);
+		}
+	}
+
+	/* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
+	if (list_empty(&(usbvision->outqueue))) {
+		if (noblock)
+			return -EAGAIN;
+
+		ret = wait_event_interruptible
+			(usbvision->wait_frame,
+			 !list_empty(&(usbvision->outqueue)));
+		if (ret)
+			return ret;
+	}
+
+	spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
+	frame = list_entry(usbvision->outqueue.next,
+			   struct usbvision_frame, frame);
+	list_del(usbvision->outqueue.next);
+	spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
+
+	/* An error returns an empty frame */
+	if (frame->grabstate == frame_state_error) {
+		frame->bytes_read = 0;
+		return 0;
+	}
+
+	PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
+	       __func__,
+	       frame->index, frame->bytes_read, frame->scanlength);
+
+	/* copy bytes to user space; we allow for partials reads */
+	if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
+		count = frame->scanlength - frame->bytes_read;
+
+	if (copy_to_user(buf, frame->data + frame->bytes_read, count))
+		return -EFAULT;
+
+	frame->bytes_read += count;
+	PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
+	       __func__,
+	       (unsigned long)count, frame->bytes_read);
+
+	/* For now, forget the frame if it has not been read in one shot. */
+/*	if (frame->bytes_read >= frame->scanlength) {*/ /* All data has been read */
+		frame->bytes_read = 0;
+
+		/* Mark it as available to be used again. */
+		frame->grabstate = frame_state_unused;
+/*	} */
+
+	return count;
+}
+
+static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
+		      size_t count, loff_t *ppos)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+	int res;
+
+	if (mutex_lock_interruptible(&usbvision->v4l2_lock))
+		return -ERESTARTSYS;
+	res = usbvision_read(file, buf, count, ppos);
+	mutex_unlock(&usbvision->v4l2_lock);
+	return res;
+}
+
+static int usbvision_mmap(struct file *file, struct vm_area_struct *vma)
+{
+	unsigned long size = vma->vm_end - vma->vm_start,
+		start = vma->vm_start;
+	void *pos;
+	u32 i;
+	struct usb_usbvision *usbvision = video_drvdata(file);
+
+	PDEBUG(DBG_MMAP, "mmap");
+
+	if (!USBVISION_IS_OPERATIONAL(usbvision))
+		return -EFAULT;
+
+	if (!(vma->vm_flags & VM_WRITE) ||
+	    size != PAGE_ALIGN(usbvision->max_frame_size)) {
+		return -EINVAL;
+	}
+
+	for (i = 0; i < usbvision->num_frames; i++) {
+		if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
+		    vma->vm_pgoff)
+			break;
+	}
+	if (i == usbvision->num_frames) {
+		PDEBUG(DBG_MMAP,
+		       "mmap: user supplied mapping address is out of range");
+		return -EINVAL;
+	}
+
+	/* VM_IO is eventually going to replace PageReserved altogether */
+	vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
+
+	pos = usbvision->frame[i].data;
+	while (size > 0) {
+		if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
+			PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
+			return -EAGAIN;
+		}
+		start += PAGE_SIZE;
+		pos += PAGE_SIZE;
+		size -= PAGE_SIZE;
+	}
+
+	return 0;
+}
+
+static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+	int res;
+
+	if (mutex_lock_interruptible(&usbvision->v4l2_lock))
+		return -ERESTARTSYS;
+	res = usbvision_mmap(file, vma);
+	mutex_unlock(&usbvision->v4l2_lock);
+	return res;
+}
+
+/*
+ * Here comes the stuff for radio on usbvision based devices
+ *
+ */
+static int usbvision_radio_open(struct file *file)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+	int err_code = 0;
+
+	PDEBUG(DBG_IO, "%s:", __func__);
+
+	if (mutex_lock_interruptible(&usbvision->v4l2_lock))
+		return -ERESTARTSYS;
+	if (usbvision->user) {
+		dev_err(&usbvision->rdev->dev,
+			"%s: Someone tried to open an already opened USBVision Radio!\n",
+				__func__);
+		err_code = -EBUSY;
+	} else {
+		if (power_on_at_open) {
+			usbvision_reset_power_off_timer(usbvision);
+			if (usbvision->power == 0) {
+				usbvision_power_on(usbvision);
+				usbvision_i2c_register(usbvision);
+			}
+		}
+
+		/* Alternate interface 1 is is the biggest frame size */
+		err_code = usbvision_set_alternate(usbvision);
+		if (err_code < 0) {
+			usbvision->last_error = err_code;
+			err_code = -EBUSY;
+			goto out;
+		}
+
+		/* If so far no errors then we shall start the radio */
+		usbvision->radio = 1;
+		call_all(usbvision, tuner, s_radio);
+		usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
+		usbvision->user++;
+	}
+
+	if (err_code) {
+		if (power_on_at_open) {
+			usbvision_i2c_unregister(usbvision);
+			usbvision_power_off(usbvision);
+			usbvision->initialized = 0;
+		}
+	}
+out:
+	mutex_unlock(&usbvision->v4l2_lock);
+	return err_code;
+}
+
+
+static int usbvision_radio_close(struct file *file)
+{
+	struct usb_usbvision *usbvision = video_drvdata(file);
+	int err_code = 0;
+
+	PDEBUG(DBG_IO, "");
+
+	mutex_lock(&usbvision->v4l2_lock);
+	/* Set packet size to 0 */
+	usbvision->iface_alt = 0;
+	err_code = usb_set_interface(usbvision->dev, usbvision->iface,
+				    usbvision->iface_alt);
+
+	usbvision_audio_off(usbvision);
+	usbvision->radio = 0;
+	usbvision->user--;
+
+	if (power_on_at_open) {
+		usbvision_set_power_off_timer(usbvision);
+		usbvision->initialized = 0;
+	}
+
+	if (usbvision->remove_pending) {
+		printk(KERN_INFO "%s: Final disconnect\n", __func__);
+		usbvision_release(usbvision);
+	}
+
+	mutex_unlock(&usbvision->v4l2_lock);
+	PDEBUG(DBG_IO, "success");
+	return err_code;
+}
+
+/* Video registration stuff */
+
+/* Video template */
+static const struct v4l2_file_operations usbvision_fops = {
+	.owner             = THIS_MODULE,
+	.open		= usbvision_v4l2_open,
+	.release	= usbvision_v4l2_close,
+	.read		= usbvision_v4l2_read,
+	.mmap		= usbvision_v4l2_mmap,
+	.unlocked_ioctl	= video_ioctl2,
+/*	.poll		= video_poll, */
+};
+
+static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
+	.vidioc_querycap      = vidioc_querycap,
+	.vidioc_enum_fmt_vid_cap  = vidioc_enum_fmt_vid_cap,
+	.vidioc_g_fmt_vid_cap     = vidioc_g_fmt_vid_cap,
+	.vidioc_try_fmt_vid_cap   = vidioc_try_fmt_vid_cap,
+	.vidioc_s_fmt_vid_cap     = vidioc_s_fmt_vid_cap,
+	.vidioc_reqbufs       = vidioc_reqbufs,
+	.vidioc_querybuf      = vidioc_querybuf,
+	.vidioc_qbuf          = vidioc_qbuf,
+	.vidioc_dqbuf         = vidioc_dqbuf,
+	.vidioc_s_std         = vidioc_s_std,
+	.vidioc_enum_input    = vidioc_enum_input,
+	.vidioc_g_input       = vidioc_g_input,
+	.vidioc_s_input       = vidioc_s_input,
+	.vidioc_queryctrl     = vidioc_queryctrl,
+	.vidioc_g_audio       = vidioc_g_audio,
+	.vidioc_s_audio       = vidioc_s_audio,
+	.vidioc_g_ctrl        = vidioc_g_ctrl,
+	.vidioc_s_ctrl        = vidioc_s_ctrl,
+	.vidioc_streamon      = vidioc_streamon,
+	.vidioc_streamoff     = vidioc_streamoff,
+	.vidioc_g_tuner       = vidioc_g_tuner,
+	.vidioc_s_tuner       = vidioc_s_tuner,
+	.vidioc_g_frequency   = vidioc_g_frequency,
+	.vidioc_s_frequency   = vidioc_s_frequency,
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+	.vidioc_g_register    = vidioc_g_register,
+	.vidioc_s_register    = vidioc_s_register,
+#endif
+};
+
+static struct video_device usbvision_video_template = {
+	.fops		= &usbvision_fops,
+	.ioctl_ops	= &usbvision_ioctl_ops,
+	.name           = "usbvision-video",
+	.release	= video_device_release,
+	.tvnorms        = USBVISION_NORMS,
+	.current_norm   = V4L2_STD_PAL
+};
+
+
+/* Radio template */
+static const struct v4l2_file_operations usbvision_radio_fops = {
+	.owner             = THIS_MODULE,
+	.open		= usbvision_radio_open,
+	.release	= usbvision_radio_close,
+	.unlocked_ioctl	= video_ioctl2,
+};
+
+static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
+	.vidioc_querycap      = vidioc_querycap,
+	.vidioc_enum_input    = vidioc_enum_input,
+	.vidioc_g_input       = vidioc_g_input,
+	.vidioc_s_input       = vidioc_s_input,
+	.vidioc_queryctrl     = vidioc_queryctrl,
+	.vidioc_g_audio       = vidioc_g_audio,
+	.vidioc_s_audio       = vidioc_s_audio,
+	.vidioc_g_ctrl        = vidioc_g_ctrl,
+	.vidioc_s_ctrl        = vidioc_s_ctrl,
+	.vidioc_g_tuner       = vidioc_g_tuner,
+	.vidioc_s_tuner       = vidioc_s_tuner,
+	.vidioc_g_frequency   = vidioc_g_frequency,
+	.vidioc_s_frequency   = vidioc_s_frequency,
+};
+
+static struct video_device usbvision_radio_template = {
+	.fops		= &usbvision_radio_fops,
+	.name		= "usbvision-radio",
+	.release	= video_device_release,
+	.ioctl_ops	= &usbvision_radio_ioctl_ops,
+
+	.tvnorms              = USBVISION_NORMS,
+	.current_norm         = V4L2_STD_PAL
+};
+
+
+static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
+					struct video_device *vdev_template,
+					char *name)
+{
+	struct usb_device *usb_dev = usbvision->dev;
+	struct video_device *vdev;
+
+	if (usb_dev == NULL) {
+		dev_err(&usbvision->dev->dev,
+			"%s: usbvision->dev is not set\n", __func__);
+		return NULL;
+	}
+
+	vdev = video_device_alloc();
+	if (NULL == vdev)
+		return NULL;
+	*vdev = *vdev_template;
+	vdev->lock = &usbvision->v4l2_lock;
+	vdev->v4l2_dev = &usbvision->v4l2_dev;
+	snprintf(vdev->name, sizeof(vdev->name), "%s", name);
+	video_set_drvdata(vdev, usbvision);
+	return vdev;
+}
+
+/* unregister video4linux devices */
+static void usbvision_unregister_video(struct usb_usbvision *usbvision)
+{
+	/* Radio Device: */
+	if (usbvision->rdev) {
+		PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
+		       video_device_node_name(usbvision->rdev));
+		if (video_is_registered(usbvision->rdev))
+			video_unregister_device(usbvision->rdev);
+		else
+			video_device_release(usbvision->rdev);
+		usbvision->rdev = NULL;
+	}
+
+	/* Video Device: */
+	if (usbvision->vdev) {
+		PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
+		       video_device_node_name(usbvision->vdev));
+		if (video_is_registered(usbvision->vdev))
+			video_unregister_device(usbvision->vdev);
+		else
+			video_device_release(usbvision->vdev);
+		usbvision->vdev = NULL;
+	}
+}
+
+/* register video4linux devices */
+static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
+{
+	/* Video Device: */
+	usbvision->vdev = usbvision_vdev_init(usbvision,
+					      &usbvision_video_template,
+					      "USBVision Video");
+	if (usbvision->vdev == NULL)
+		goto err_exit;
+	if (video_register_device(usbvision->vdev, VFL_TYPE_GRABBER, video_nr) < 0)
+		goto err_exit;
+	printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n",
+	       usbvision->nr, video_device_node_name(usbvision->vdev));
+
+	/* Radio Device: */
+	if (usbvision_device_data[usbvision->dev_model].radio) {
+		/* usbvision has radio */
+		usbvision->rdev = usbvision_vdev_init(usbvision,
+						      &usbvision_radio_template,
+						      "USBVision Radio");
+		if (usbvision->rdev == NULL)
+			goto err_exit;
+		if (video_register_device(usbvision->rdev, VFL_TYPE_RADIO, radio_nr) < 0)
+			goto err_exit;
+		printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n",
+		       usbvision->nr, video_device_node_name(usbvision->rdev));
+	}
+	/* all done */
+	return 0;
+
+ err_exit:
+	dev_err(&usbvision->dev->dev,
+		"USBVision[%d]: video_register_device() failed\n",
+			usbvision->nr);
+	usbvision_unregister_video(usbvision);
+	return -1;
+}
+
+/*
+ * usbvision_alloc()
+ *
+ * This code allocates the struct usb_usbvision.
+ * It is filled with default values.
+ *
+ * Returns NULL on error, a pointer to usb_usbvision else.
+ *
+ */
+static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
+					     struct usb_interface *intf)
+{
+	struct usb_usbvision *usbvision;
+
+	usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
+	if (usbvision == NULL)
+		return NULL;
+
+	usbvision->dev = dev;
+	if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
+		goto err_free;
+
+	mutex_init(&usbvision->v4l2_lock);
+
+	/* prepare control urb for control messages during interrupts */
+	usbvision->ctrl_urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
+	if (usbvision->ctrl_urb == NULL)
+		goto err_unreg;
+	init_waitqueue_head(&usbvision->ctrl_urb_wq);
+
+	usbvision_init_power_off_timer(usbvision);
+
+	return usbvision;
+
+err_unreg:
+	v4l2_device_unregister(&usbvision->v4l2_dev);
+err_free:
+	kfree(usbvision);
+	return NULL;
+}
+
+/*
+ * usbvision_release()
+ *
+ * This code does final release of struct usb_usbvision. This happens
+ * after the device is disconnected -and- all clients closed their files.
+ *
+ */
+static void usbvision_release(struct usb_usbvision *usbvision)
+{
+	PDEBUG(DBG_PROBE, "");
+
+	usbvision_reset_power_off_timer(usbvision);
+
+	usbvision->initialized = 0;
+
+	usbvision_remove_sysfs(usbvision->vdev);
+	usbvision_unregister_video(usbvision);
+
+	usb_free_urb(usbvision->ctrl_urb);
+
+	v4l2_device_unregister(&usbvision->v4l2_dev);
+	kfree(usbvision);
+
+	PDEBUG(DBG_PROBE, "success");
+}
+
+
+/*********************** usb interface **********************************/
+
+static void usbvision_configure_video(struct usb_usbvision *usbvision)
+{
+	int model;
+
+	if (usbvision == NULL)
+		return;
+
+	model = usbvision->dev_model;
+	usbvision->palette = usbvision_v4l2_format[2]; /* V4L2_PIX_FMT_RGB24; */
+
+	if (usbvision_device_data[usbvision->dev_model].vin_reg2_override) {
+		usbvision->vin_reg2_preset =
+			usbvision_device_data[usbvision->dev_model].vin_reg2;
+	} else {
+		usbvision->vin_reg2_preset = 0;
+	}
+
+	usbvision->tvnorm_id = usbvision_device_data[model].video_norm;
+
+	usbvision->video_inputs = usbvision_device_data[model].video_channels;
+	usbvision->ctl_input = 0;
+
+	/* This should be here to make i2c clients to be able to register */
+	/* first switch off audio */
+	if (usbvision_device_data[model].audio_channels > 0)
+		usbvision_audio_off(usbvision);
+	if (!power_on_at_open) {
+		/* and then power up the noisy tuner */
+		usbvision_power_on(usbvision);
+		usbvision_i2c_register(usbvision);
+	}
+}
+
+/*
+ * usbvision_probe()
+ *
+ * This procedure queries device descriptor and accepts the interface
+ * if it looks like USBVISION video device
+ *
+ */
+static int __devinit usbvision_probe(struct usb_interface *intf,
+				     const struct usb_device_id *devid)
+{
+	struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
+	struct usb_interface *uif;
+	__u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
+	const struct usb_host_interface *interface;
+	struct usb_usbvision *usbvision = NULL;
+	const struct usb_endpoint_descriptor *endpoint;
+	int model, i;
+
+	PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
+				dev->descriptor.idVendor,
+				dev->descriptor.idProduct, ifnum);
+
+	model = devid->driver_info;
+	if (model < 0 || model >= usbvision_device_data_size) {
+		PDEBUG(DBG_PROBE, "model out of bounds %d", model);
+		return -ENODEV;
+	}
+	printk(KERN_INFO "%s: %s found\n", __func__,
+				usbvision_device_data[model].model_string);
+
+	if (usbvision_device_data[model].interface >= 0)
+		interface = &dev->actconfig->interface[usbvision_device_data[model].interface]->altsetting[0];
+	else
+		interface = &dev->actconfig->interface[ifnum]->altsetting[0];
+	endpoint = &interface->endpoint[1].desc;
+	if (!usb_endpoint_xfer_isoc(endpoint)) {
+		dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
+		    __func__, ifnum);
+		dev_err(&intf->dev, "%s: Endpoint attributes %d",
+		    __func__, endpoint->bmAttributes);
+		return -ENODEV;
+	}
+	if (usb_endpoint_dir_out(endpoint)) {
+		dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
+		    __func__, ifnum);
+		return -ENODEV;
+	}
+
+	usbvision = usbvision_alloc(dev, intf);
+	if (usbvision == NULL) {
+		dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
+		return -ENOMEM;
+	}
+
+	if (dev->descriptor.bNumConfigurations > 1)
+		usbvision->bridge_type = BRIDGE_NT1004;
+	else if (model == DAZZLE_DVC_90_REV_1_SECAM)
+		usbvision->bridge_type = BRIDGE_NT1005;
+	else
+		usbvision->bridge_type = BRIDGE_NT1003;
+	PDEBUG(DBG_PROBE, "bridge_type %d", usbvision->bridge_type);
+
+	/* compute alternate max packet sizes */
+	uif = dev->actconfig->interface[0];
+
+	usbvision->num_alt = uif->num_altsetting;
+	PDEBUG(DBG_PROBE, "Alternate settings: %i", usbvision->num_alt);
+	usbvision->alt_max_pkt_size = kmalloc(32 * usbvision->num_alt, GFP_KERNEL);
+	if (usbvision->alt_max_pkt_size == NULL) {
+		dev_err(&intf->dev, "usbvision: out of memory!\n");
+		return -ENOMEM;
+	}
+
+	for (i = 0; i < usbvision->num_alt; i++) {
+		u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
+				      wMaxPacketSize);
+		usbvision->alt_max_pkt_size[i] =
+			(tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
+		PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i", i,
+		       usbvision->alt_max_pkt_size[i]);
+	}
+
+
+	usbvision->nr = usbvision_nr++;
+
+	usbvision->have_tuner = usbvision_device_data[model].tuner;
+	if (usbvision->have_tuner)
+		usbvision->tuner_type = usbvision_device_data[model].tuner_type;
+
+	usbvision->dev_model = model;
+	usbvision->remove_pending = 0;
+	usbvision->iface = ifnum;
+	usbvision->iface_alt = 0;
+	usbvision->video_endp = endpoint->bEndpointAddress;
+	usbvision->isoc_packet_size = 0;
+	usbvision->usb_bandwidth = 0;
+	usbvision->user = 0;
+	usbvision->streaming = stream_off;
+	usbvision_configure_video(usbvision);
+	usbvision_register_video(usbvision);
+
+	usbvision_create_sysfs(usbvision->vdev);
+
+	PDEBUG(DBG_PROBE, "success");
+	return 0;
+}
+
+
+/*
+ * usbvision_disconnect()
+ *
+ * This procedure stops all driver activity, deallocates interface-private
+ * structure (pointed by 'ptr') and after that driver should be removable
+ * with no ill consequences.
+ *
+ */
+static void __devexit usbvision_disconnect(struct usb_interface *intf)
+{
+	struct usb_usbvision *usbvision = to_usbvision(usb_get_intfdata(intf));
+
+	PDEBUG(DBG_PROBE, "");
+
+	if (usbvision == NULL) {
+		pr_err("%s: usb_get_intfdata() failed\n", __func__);
+		return;
+	}
+
+	mutex_lock(&usbvision->v4l2_lock);
+
+	/* At this time we ask to cancel outstanding URBs */
+	usbvision_stop_isoc(usbvision);
+
+	v4l2_device_disconnect(&usbvision->v4l2_dev);
+
+	if (usbvision->power) {
+		usbvision_i2c_unregister(usbvision);
+		usbvision_power_off(usbvision);
+	}
+	usbvision->remove_pending = 1;	/* Now all ISO data will be ignored */
+
+	usb_put_dev(usbvision->dev);
+	usbvision->dev = NULL;	/* USB device is no more */
+
+	mutex_unlock(&usbvision->v4l2_lock);
+
+	if (usbvision->user) {
+		printk(KERN_INFO "%s: In use, disconnect pending\n",
+		       __func__);
+		wake_up_interruptible(&usbvision->wait_frame);
+		wake_up_interruptible(&usbvision->wait_stream);
+	} else {
+		usbvision_release(usbvision);
+	}
+
+	PDEBUG(DBG_PROBE, "success");
+}
+
+static struct usb_driver usbvision_driver = {
+	.name		= "usbvision",
+	.id_table	= usbvision_table,
+	.probe		= usbvision_probe,
+	.disconnect	= __devexit_p(usbvision_disconnect),
+};
+
+/*
+ * usbvision_init()
+ *
+ * This code is run to initialize the driver.
+ *
+ */
+static int __init usbvision_init(void)
+{
+	int err_code;
+
+	PDEBUG(DBG_PROBE, "");
+
+	PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
+	PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
+	PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
+
+	/* disable planar mode support unless compression enabled */
+	if (isoc_mode != ISOC_MODE_COMPRESS) {
+		/* FIXME : not the right way to set supported flag */
+		usbvision_v4l2_format[6].supported = 0; /* V4L2_PIX_FMT_YVU420 */
+		usbvision_v4l2_format[7].supported = 0; /* V4L2_PIX_FMT_YUV422P */
+	}
+
+	err_code = usb_register(&usbvision_driver);
+
+	if (err_code == 0) {
+		printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
+		PDEBUG(DBG_PROBE, "success");
+	}
+	return err_code;
+}
+
+static void __exit usbvision_exit(void)
+{
+	PDEBUG(DBG_PROBE, "");
+
+	usb_deregister(&usbvision_driver);
+	PDEBUG(DBG_PROBE, "success");
+}
+
+module_init(usbvision_init);
+module_exit(usbvision_exit);
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */