[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>

1 files changed, 0 insertions, 623 deletions

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);