[media] rename most media/video usb drivers to media/usb

Rename all USB drivers with their own directory under
drivers/media/video into drivers/media/usb and update the
building system.

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

1 files changed, 0 insertions, 2165 deletions

diff --git a/drivers/media/video/uvc/uvc_ctrl.c b/drivers/media/video/uvc/uvc_ctrl.c
deleted file mode 100644
index f7061a5ef1d2..000000000000
--- a/drivers/media/video/uvc/uvc_ctrl.c
+++ /dev/null
@@ -1,2165 +0,0 @@
-/*
- *      uvc_ctrl.c  --  USB Video Class driver - Controls
- *
- *      Copyright (C) 2005-2010
- *          Laurent Pinchart (laurent.pinchart@ideasonboard.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/kernel.h>
-#include <linux/list.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/uaccess.h>
-#include <linux/usb.h>
-#include <linux/videodev2.h>
-#include <linux/vmalloc.h>
-#include <linux/wait.h>
-#include <linux/atomic.h>
-#include <media/v4l2-ctrls.h>
-
-#include "uvcvideo.h"
-
-#define UVC_CTRL_DATA_CURRENT	0
-#define UVC_CTRL_DATA_BACKUP	1
-#define UVC_CTRL_DATA_MIN	2
-#define UVC_CTRL_DATA_MAX	3
-#define UVC_CTRL_DATA_RES	4
-#define UVC_CTRL_DATA_DEF	5
-#define UVC_CTRL_DATA_LAST	6
-
-/* ------------------------------------------------------------------------
- * Controls
- */
-
-static struct uvc_control_info uvc_ctrls[] = {
-	{
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_BRIGHTNESS_CONTROL,
-		.index		= 0,
-		.size		= 2,
-		.flags		= UVC_CTRL_FLAG_SET_CUR
-				| UVC_CTRL_FLAG_GET_RANGE
-				| UVC_CTRL_FLAG_RESTORE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_CONTRAST_CONTROL,
-		.index		= 1,
-		.size		= 2,
-		.flags		= UVC_CTRL_FLAG_SET_CUR
-				| UVC_CTRL_FLAG_GET_RANGE
-				| UVC_CTRL_FLAG_RESTORE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_HUE_CONTROL,
-		.index		= 2,
-		.size		= 2,
-		.flags		= UVC_CTRL_FLAG_SET_CUR
-				| UVC_CTRL_FLAG_GET_RANGE
-				| UVC_CTRL_FLAG_RESTORE
-				| UVC_CTRL_FLAG_AUTO_UPDATE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_SATURATION_CONTROL,
-		.index		= 3,
-		.size		= 2,
-		.flags		= UVC_CTRL_FLAG_SET_CUR
-				| UVC_CTRL_FLAG_GET_RANGE
-				| UVC_CTRL_FLAG_RESTORE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_SHARPNESS_CONTROL,
-		.index		= 4,
-		.size		= 2,
-		.flags		= UVC_CTRL_FLAG_SET_CUR
-				| UVC_CTRL_FLAG_GET_RANGE
-				| UVC_CTRL_FLAG_RESTORE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_GAMMA_CONTROL,
-		.index		= 5,
-		.size		= 2,
-		.flags		= UVC_CTRL_FLAG_SET_CUR
-				| UVC_CTRL_FLAG_GET_RANGE
-				| UVC_CTRL_FLAG_RESTORE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_WHITE_BALANCE_TEMPERATURE_CONTROL,
-		.index		= 6,
-		.size		= 2,
-		.flags		= UVC_CTRL_FLAG_SET_CUR
-				| UVC_CTRL_FLAG_GET_RANGE
-				| UVC_CTRL_FLAG_RESTORE
-				| UVC_CTRL_FLAG_AUTO_UPDATE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_WHITE_BALANCE_COMPONENT_CONTROL,
-		.index		= 7,
-		.size		= 4,
-		.flags		= UVC_CTRL_FLAG_SET_CUR
-				| UVC_CTRL_FLAG_GET_RANGE
-				| UVC_CTRL_FLAG_RESTORE
-				| UVC_CTRL_FLAG_AUTO_UPDATE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_BACKLIGHT_COMPENSATION_CONTROL,
-		.index		= 8,
-		.size		= 2,
-		.flags		= UVC_CTRL_FLAG_SET_CUR
-				| UVC_CTRL_FLAG_GET_RANGE
-				| UVC_CTRL_FLAG_RESTORE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_GAIN_CONTROL,
-		.index		= 9,
-		.size		= 2,
-		.flags		= UVC_CTRL_FLAG_SET_CUR
-				| UVC_CTRL_FLAG_GET_RANGE
-				| UVC_CTRL_FLAG_RESTORE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_POWER_LINE_FREQUENCY_CONTROL,
-		.index		= 10,
-		.size		= 1,
-		.flags		= UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_CUR
-				| UVC_CTRL_FLAG_GET_DEF | UVC_CTRL_FLAG_RESTORE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_HUE_AUTO_CONTROL,
-		.index		= 11,
-		.size		= 1,
-		.flags		= UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_CUR
-				| UVC_CTRL_FLAG_GET_DEF | UVC_CTRL_FLAG_RESTORE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_WHITE_BALANCE_TEMPERATURE_AUTO_CONTROL,
-		.index		= 12,
-		.size		= 1,
-		.flags		= UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_CUR
-				| UVC_CTRL_FLAG_GET_DEF | UVC_CTRL_FLAG_RESTORE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_WHITE_BALANCE_COMPONENT_AUTO_CONTROL,
-		.index		= 13,
-		.size		= 1,
-		.flags		= UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_CUR
-				| UVC_CTRL_FLAG_GET_DEF | UVC_CTRL_FLAG_RESTORE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_DIGITAL_MULTIPLIER_CONTROL,
-		.index		= 14,
-		.size		= 2,
-		.flags		= UVC_CTRL_FLAG_SET_CUR
-				| UVC_CTRL_FLAG_GET_RANGE
-				| UVC_CTRL_FLAG_RESTORE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_DIGITAL_MULTIPLIER_LIMIT_CONTROL,
-		.index		= 15,
-		.size		= 2,
-		.flags		= UVC_CTRL_FLAG_SET_CUR
-				| UVC_CTRL_FLAG_GET_RANGE
-				| UVC_CTRL_FLAG_RESTORE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_ANALOG_VIDEO_STANDARD_CONTROL,
-		.index		= 16,
-		.size		= 1,
-		.flags		= UVC_CTRL_FLAG_GET_CUR,
-	},
-	{
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_ANALOG_LOCK_STATUS_CONTROL,
-		.index		= 17,
-		.size		= 1,
-		.flags		= UVC_CTRL_FLAG_GET_CUR,
-	},
-	{
-		.entity		= UVC_GUID_UVC_CAMERA,
-		.selector	= UVC_CT_SCANNING_MODE_CONTROL,
-		.index		= 0,
-		.size		= 1,
-		.flags		= UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_CUR
-				| UVC_CTRL_FLAG_RESTORE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_CAMERA,
-		.selector	= UVC_CT_AE_MODE_CONTROL,
-		.index		= 1,
-		.size		= 1,
-		.flags		= UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_CUR
-				| UVC_CTRL_FLAG_GET_DEF | UVC_CTRL_FLAG_GET_RES
-				| UVC_CTRL_FLAG_RESTORE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_CAMERA,
-		.selector	= UVC_CT_AE_PRIORITY_CONTROL,
-		.index		= 2,
-		.size		= 1,
-		.flags		= UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_CUR
-				| UVC_CTRL_FLAG_RESTORE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_CAMERA,
-		.selector	= UVC_CT_EXPOSURE_TIME_ABSOLUTE_CONTROL,
-		.index		= 3,
-		.size		= 4,
-		.flags		= UVC_CTRL_FLAG_SET_CUR
-				| UVC_CTRL_FLAG_GET_RANGE
-				| UVC_CTRL_FLAG_RESTORE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_CAMERA,
-		.selector	= UVC_CT_EXPOSURE_TIME_RELATIVE_CONTROL,
-		.index		= 4,
-		.size		= 1,
-		.flags		= UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_RESTORE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_CAMERA,
-		.selector	= UVC_CT_FOCUS_ABSOLUTE_CONTROL,
-		.index		= 5,
-		.size		= 2,
-		.flags		= UVC_CTRL_FLAG_SET_CUR
-				| UVC_CTRL_FLAG_GET_RANGE
-				| UVC_CTRL_FLAG_RESTORE
-				| UVC_CTRL_FLAG_AUTO_UPDATE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_CAMERA,
-		.selector	= UVC_CT_FOCUS_RELATIVE_CONTROL,
-		.index		= 6,
-		.size		= 2,
-		.flags		= UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_MIN
-				| UVC_CTRL_FLAG_GET_MAX | UVC_CTRL_FLAG_GET_RES
-				| UVC_CTRL_FLAG_GET_DEF
-				| UVC_CTRL_FLAG_AUTO_UPDATE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_CAMERA,
-		.selector	= UVC_CT_IRIS_ABSOLUTE_CONTROL,
-		.index		= 7,
-		.size		= 2,
-		.flags		= UVC_CTRL_FLAG_SET_CUR
-				| UVC_CTRL_FLAG_GET_RANGE
-				| UVC_CTRL_FLAG_RESTORE
-				| UVC_CTRL_FLAG_AUTO_UPDATE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_CAMERA,
-		.selector	= UVC_CT_IRIS_RELATIVE_CONTROL,
-		.index		= 8,
-		.size		= 1,
-		.flags		= UVC_CTRL_FLAG_SET_CUR
-				| UVC_CTRL_FLAG_AUTO_UPDATE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_CAMERA,
-		.selector	= UVC_CT_ZOOM_ABSOLUTE_CONTROL,
-		.index		= 9,
-		.size		= 2,
-		.flags		= UVC_CTRL_FLAG_SET_CUR
-				| UVC_CTRL_FLAG_GET_RANGE
-				| UVC_CTRL_FLAG_RESTORE
-				| UVC_CTRL_FLAG_AUTO_UPDATE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_CAMERA,
-		.selector	= UVC_CT_ZOOM_RELATIVE_CONTROL,
-		.index		= 10,
-		.size		= 3,
-		.flags		= UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_MIN
-				| UVC_CTRL_FLAG_GET_MAX | UVC_CTRL_FLAG_GET_RES
-				| UVC_CTRL_FLAG_GET_DEF
-				| UVC_CTRL_FLAG_AUTO_UPDATE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_CAMERA,
-		.selector	= UVC_CT_PANTILT_ABSOLUTE_CONTROL,
-		.index		= 11,
-		.size		= 8,
-		.flags		= UVC_CTRL_FLAG_SET_CUR
-				| UVC_CTRL_FLAG_GET_RANGE
-				| UVC_CTRL_FLAG_RESTORE
-				| UVC_CTRL_FLAG_AUTO_UPDATE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_CAMERA,
-		.selector	= UVC_CT_PANTILT_RELATIVE_CONTROL,
-		.index		= 12,
-		.size		= 4,
-		.flags		= UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_MIN
-				| UVC_CTRL_FLAG_GET_MAX | UVC_CTRL_FLAG_GET_RES
-				| UVC_CTRL_FLAG_GET_DEF
-				| UVC_CTRL_FLAG_AUTO_UPDATE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_CAMERA,
-		.selector	= UVC_CT_ROLL_ABSOLUTE_CONTROL,
-		.index		= 13,
-		.size		= 2,
-		.flags		= UVC_CTRL_FLAG_SET_CUR
-				| UVC_CTRL_FLAG_GET_RANGE
-				| UVC_CTRL_FLAG_RESTORE
-				| UVC_CTRL_FLAG_AUTO_UPDATE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_CAMERA,
-		.selector	= UVC_CT_ROLL_RELATIVE_CONTROL,
-		.index		= 14,
-		.size		= 2,
-		.flags		= UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_MIN
-				| UVC_CTRL_FLAG_GET_MAX | UVC_CTRL_FLAG_GET_RES
-				| UVC_CTRL_FLAG_GET_DEF
-				| UVC_CTRL_FLAG_AUTO_UPDATE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_CAMERA,
-		.selector	= UVC_CT_FOCUS_AUTO_CONTROL,
-		.index		= 17,
-		.size		= 1,
-		.flags		= UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_CUR
-				| UVC_CTRL_FLAG_GET_DEF | UVC_CTRL_FLAG_RESTORE,
-	},
-	{
-		.entity		= UVC_GUID_UVC_CAMERA,
-		.selector	= UVC_CT_PRIVACY_CONTROL,
-		.index		= 18,
-		.size		= 1,
-		.flags		= UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_CUR
-				| UVC_CTRL_FLAG_RESTORE
-				| UVC_CTRL_FLAG_AUTO_UPDATE,
-	},
-};
-
-static struct uvc_menu_info power_line_frequency_controls[] = {
-	{ 0, "Disabled" },
-	{ 1, "50 Hz" },
-	{ 2, "60 Hz" },
-};
-
-static struct uvc_menu_info exposure_auto_controls[] = {
-	{ 2, "Auto Mode" },
-	{ 1, "Manual Mode" },
-	{ 4, "Shutter Priority Mode" },
-	{ 8, "Aperture Priority Mode" },
-};
-
-static __s32 uvc_ctrl_get_zoom(struct uvc_control_mapping *mapping,
-	__u8 query, const __u8 *data)
-{
-	__s8 zoom = (__s8)data[0];
-
-	switch (query) {
-	case UVC_GET_CUR:
-		return (zoom == 0) ? 0 : (zoom > 0 ? data[2] : -data[2]);
-
-	case UVC_GET_MIN:
-	case UVC_GET_MAX:
-	case UVC_GET_RES:
-	case UVC_GET_DEF:
-	default:
-		return data[2];
-	}
-}
-
-static void uvc_ctrl_set_zoom(struct uvc_control_mapping *mapping,
-	__s32 value, __u8 *data)
-{
-	data[0] = value == 0 ? 0 : (value > 0) ? 1 : 0xff;
-	data[2] = min((int)abs(value), 0xff);
-}
-
-static struct uvc_control_mapping uvc_ctrl_mappings[] = {
-	{
-		.id		= V4L2_CID_BRIGHTNESS,
-		.name		= "Brightness",
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_BRIGHTNESS_CONTROL,
-		.size		= 16,
-		.offset		= 0,
-		.v4l2_type	= V4L2_CTRL_TYPE_INTEGER,
-		.data_type	= UVC_CTRL_DATA_TYPE_SIGNED,
-	},
-	{
-		.id		= V4L2_CID_CONTRAST,
-		.name		= "Contrast",
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_CONTRAST_CONTROL,
-		.size		= 16,
-		.offset		= 0,
-		.v4l2_type	= V4L2_CTRL_TYPE_INTEGER,
-		.data_type	= UVC_CTRL_DATA_TYPE_UNSIGNED,
-	},
-	{
-		.id		= V4L2_CID_HUE,
-		.name		= "Hue",
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_HUE_CONTROL,
-		.size		= 16,
-		.offset		= 0,
-		.v4l2_type	= V4L2_CTRL_TYPE_INTEGER,
-		.data_type	= UVC_CTRL_DATA_TYPE_SIGNED,
-		.master_id	= V4L2_CID_HUE_AUTO,
-		.master_manual	= 0,
-	},
-	{
-		.id		= V4L2_CID_SATURATION,
-		.name		= "Saturation",
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_SATURATION_CONTROL,
-		.size		= 16,
-		.offset		= 0,
-		.v4l2_type	= V4L2_CTRL_TYPE_INTEGER,
-		.data_type	= UVC_CTRL_DATA_TYPE_UNSIGNED,
-	},
-	{
-		.id		= V4L2_CID_SHARPNESS,
-		.name		= "Sharpness",
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_SHARPNESS_CONTROL,
-		.size		= 16,
-		.offset		= 0,
-		.v4l2_type	= V4L2_CTRL_TYPE_INTEGER,
-		.data_type	= UVC_CTRL_DATA_TYPE_UNSIGNED,
-	},
-	{
-		.id		= V4L2_CID_GAMMA,
-		.name		= "Gamma",
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_GAMMA_CONTROL,
-		.size		= 16,
-		.offset		= 0,
-		.v4l2_type	= V4L2_CTRL_TYPE_INTEGER,
-		.data_type	= UVC_CTRL_DATA_TYPE_UNSIGNED,
-	},
-	{
-		.id		= V4L2_CID_BACKLIGHT_COMPENSATION,
-		.name		= "Backlight Compensation",
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_BACKLIGHT_COMPENSATION_CONTROL,
-		.size		= 16,
-		.offset		= 0,
-		.v4l2_type	= V4L2_CTRL_TYPE_INTEGER,
-		.data_type	= UVC_CTRL_DATA_TYPE_UNSIGNED,
-	},
-	{
-		.id		= V4L2_CID_GAIN,
-		.name		= "Gain",
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_GAIN_CONTROL,
-		.size		= 16,
-		.offset		= 0,
-		.v4l2_type	= V4L2_CTRL_TYPE_INTEGER,
-		.data_type	= UVC_CTRL_DATA_TYPE_UNSIGNED,
-	},
-	{
-		.id		= V4L2_CID_POWER_LINE_FREQUENCY,
-		.name		= "Power Line Frequency",
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_POWER_LINE_FREQUENCY_CONTROL,
-		.size		= 2,
-		.offset		= 0,
-		.v4l2_type	= V4L2_CTRL_TYPE_MENU,
-		.data_type	= UVC_CTRL_DATA_TYPE_ENUM,
-		.menu_info	= power_line_frequency_controls,
-		.menu_count	= ARRAY_SIZE(power_line_frequency_controls),
-	},
-	{
-		.id		= V4L2_CID_HUE_AUTO,
-		.name		= "Hue, Auto",
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_HUE_AUTO_CONTROL,
-		.size		= 1,
-		.offset		= 0,
-		.v4l2_type	= V4L2_CTRL_TYPE_BOOLEAN,
-		.data_type	= UVC_CTRL_DATA_TYPE_BOOLEAN,
-		.slave_ids	= { V4L2_CID_HUE, },
-	},
-	{
-		.id		= V4L2_CID_EXPOSURE_AUTO,
-		.name		= "Exposure, Auto",
-		.entity		= UVC_GUID_UVC_CAMERA,
-		.selector	= UVC_CT_AE_MODE_CONTROL,
-		.size		= 4,
-		.offset		= 0,
-		.v4l2_type	= V4L2_CTRL_TYPE_MENU,
-		.data_type	= UVC_CTRL_DATA_TYPE_BITMASK,
-		.menu_info	= exposure_auto_controls,
-		.menu_count	= ARRAY_SIZE(exposure_auto_controls),
-		.slave_ids	= { V4L2_CID_EXPOSURE_ABSOLUTE, },
-	},
-	{
-		.id		= V4L2_CID_EXPOSURE_AUTO_PRIORITY,
-		.name		= "Exposure, Auto Priority",
-		.entity		= UVC_GUID_UVC_CAMERA,
-		.selector	= UVC_CT_AE_PRIORITY_CONTROL,
-		.size		= 1,
-		.offset		= 0,
-		.v4l2_type	= V4L2_CTRL_TYPE_BOOLEAN,
-		.data_type	= UVC_CTRL_DATA_TYPE_BOOLEAN,
-	},
-	{
-		.id		= V4L2_CID_EXPOSURE_ABSOLUTE,
-		.name		= "Exposure (Absolute)",
-		.entity		= UVC_GUID_UVC_CAMERA,
-		.selector	= UVC_CT_EXPOSURE_TIME_ABSOLUTE_CONTROL,
-		.size		= 32,
-		.offset		= 0,
-		.v4l2_type	= V4L2_CTRL_TYPE_INTEGER,
-		.data_type	= UVC_CTRL_DATA_TYPE_UNSIGNED,
-		.master_id	= V4L2_CID_EXPOSURE_AUTO,
-		.master_manual	= V4L2_EXPOSURE_MANUAL,
-	},
-	{
-		.id		= V4L2_CID_AUTO_WHITE_BALANCE,
-		.name		= "White Balance Temperature, Auto",
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_WHITE_BALANCE_TEMPERATURE_AUTO_CONTROL,
-		.size		= 1,
-		.offset		= 0,
-		.v4l2_type	= V4L2_CTRL_TYPE_BOOLEAN,
-		.data_type	= UVC_CTRL_DATA_TYPE_BOOLEAN,
-		.slave_ids	= { V4L2_CID_WHITE_BALANCE_TEMPERATURE, },
-	},
-	{
-		.id		= V4L2_CID_WHITE_BALANCE_TEMPERATURE,
-		.name		= "White Balance Temperature",
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_WHITE_BALANCE_TEMPERATURE_CONTROL,
-		.size		= 16,
-		.offset		= 0,
-		.v4l2_type	= V4L2_CTRL_TYPE_INTEGER,
-		.data_type	= UVC_CTRL_DATA_TYPE_UNSIGNED,
-		.master_id	= V4L2_CID_AUTO_WHITE_BALANCE,
-		.master_manual	= 0,
-	},
-	{
-		.id		= V4L2_CID_AUTO_WHITE_BALANCE,
-		.name		= "White Balance Component, Auto",
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_WHITE_BALANCE_COMPONENT_AUTO_CONTROL,
-		.size		= 1,
-		.offset		= 0,
-		.v4l2_type	= V4L2_CTRL_TYPE_BOOLEAN,
-		.data_type	= UVC_CTRL_DATA_TYPE_BOOLEAN,
-		.slave_ids	= { V4L2_CID_BLUE_BALANCE,
-				    V4L2_CID_RED_BALANCE },
-	},
-	{
-		.id		= V4L2_CID_BLUE_BALANCE,
-		.name		= "White Balance Blue Component",
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_WHITE_BALANCE_COMPONENT_CONTROL,
-		.size		= 16,
-		.offset		= 0,
-		.v4l2_type	= V4L2_CTRL_TYPE_INTEGER,
-		.data_type	= UVC_CTRL_DATA_TYPE_SIGNED,
-		.master_id	= V4L2_CID_AUTO_WHITE_BALANCE,
-		.master_manual	= 0,
-	},
-	{
-		.id		= V4L2_CID_RED_BALANCE,
-		.name		= "White Balance Red Component",
-		.entity		= UVC_GUID_UVC_PROCESSING,
-		.selector	= UVC_PU_WHITE_BALANCE_COMPONENT_CONTROL,
-		.size		= 16,
-		.offset		= 16,
-		.v4l2_type	= V4L2_CTRL_TYPE_INTEGER,
-		.data_type	= UVC_CTRL_DATA_TYPE_SIGNED,
-		.master_id	= V4L2_CID_AUTO_WHITE_BALANCE,
-		.master_manual	= 0,
-	},
-	{
-		.id		= V4L2_CID_FOCUS_ABSOLUTE,
-		.name		= "Focus (absolute)",
-		.entity		= UVC_GUID_UVC_CAMERA,
-		.selector	= UVC_CT_FOCUS_ABSOLUTE_CONTROL,
-		.size		= 16,
-		.offset		= 0,
-		.v4l2_type	= V4L2_CTRL_TYPE_INTEGER,
-		.data_type	= UVC_CTRL_DATA_TYPE_UNSIGNED,
-		.master_id	= V4L2_CID_FOCUS_AUTO,
-		.master_manual	= 0,
-	},
-	{
-		.id		= V4L2_CID_FOCUS_AUTO,
-		.name		= "Focus, Auto",
-		.entity		= UVC_GUID_UVC_CAMERA,
-		.selector	= UVC_CT_FOCUS_AUTO_CONTROL,
-		.size		= 1,
-		.offset		= 0,
-		.v4l2_type	= V4L2_CTRL_TYPE_BOOLEAN,
-		.data_type	= UVC_CTRL_DATA_TYPE_BOOLEAN,
-		.slave_ids	= { V4L2_CID_FOCUS_ABSOLUTE, },
-	},
-	{
-		.id		= V4L2_CID_IRIS_ABSOLUTE,
-		.name		= "Iris, Absolute",
-		.entity		= UVC_GUID_UVC_CAMERA,
-		.selector	= UVC_CT_IRIS_ABSOLUTE_CONTROL,
-		.size		= 16,
-		.offset		= 0,
-		.v4l2_type	= V4L2_CTRL_TYPE_INTEGER,
-		.data_type	= UVC_CTRL_DATA_TYPE_UNSIGNED,
-	},
-	{
-		.id		= V4L2_CID_IRIS_RELATIVE,
-		.name		= "Iris, Relative",
-		.entity		= UVC_GUID_UVC_CAMERA,
-		.selector	= UVC_CT_IRIS_RELATIVE_CONTROL,
-		.size		= 8,
-		.offset		= 0,
-		.v4l2_type	= V4L2_CTRL_TYPE_INTEGER,
-		.data_type	= UVC_CTRL_DATA_TYPE_SIGNED,
-	},
-	{
-		.id		= V4L2_CID_ZOOM_ABSOLUTE,
-		.name		= "Zoom, Absolute",
-		.entity		= UVC_GUID_UVC_CAMERA,
-		.selector	= UVC_CT_ZOOM_ABSOLUTE_CONTROL,
-		.size		= 16,
-		.offset		= 0,
-		.v4l2_type	= V4L2_CTRL_TYPE_INTEGER,
-		.data_type	= UVC_CTRL_DATA_TYPE_UNSIGNED,
-	},
-	{
-		.id		= V4L2_CID_ZOOM_CONTINUOUS,
-		.name		= "Zoom, Continuous",
-		.entity		= UVC_GUID_UVC_CAMERA,
-		.selector	= UVC_CT_ZOOM_RELATIVE_CONTROL,
-		.size		= 0,
-		.offset		= 0,
-		.v4l2_type	= V4L2_CTRL_TYPE_INTEGER,
-		.data_type	= UVC_CTRL_DATA_TYPE_SIGNED,
-		.get		= uvc_ctrl_get_zoom,
-		.set		= uvc_ctrl_set_zoom,
-	},
-	{
-		.id		= V4L2_CID_PAN_ABSOLUTE,
-		.name		= "Pan (Absolute)",
-		.entity		= UVC_GUID_UVC_CAMERA,
-		.selector	= UVC_CT_PANTILT_ABSOLUTE_CONTROL,
-		.size		= 32,
-		.offset		= 0,
-		.v4l2_type	= V4L2_CTRL_TYPE_INTEGER,
-		.data_type	= UVC_CTRL_DATA_TYPE_UNSIGNED,
-	},
-	{
-		.id		= V4L2_CID_TILT_ABSOLUTE,
-		.name		= "Tilt (Absolute)",
-		.entity		= UVC_GUID_UVC_CAMERA,
-		.selector	= UVC_CT_PANTILT_ABSOLUTE_CONTROL,
-		.size		= 32,
-		.offset		= 32,
-		.v4l2_type	= V4L2_CTRL_TYPE_INTEGER,
-		.data_type	= UVC_CTRL_DATA_TYPE_UNSIGNED,
-	},
-	{
-		.id		= V4L2_CID_PRIVACY,
-		.name		= "Privacy",
-		.entity		= UVC_GUID_UVC_CAMERA,
-		.selector	= UVC_CT_PRIVACY_CONTROL,
-		.size		= 1,
-		.offset		= 0,
-		.v4l2_type	= V4L2_CTRL_TYPE_BOOLEAN,
-		.data_type	= UVC_CTRL_DATA_TYPE_BOOLEAN,
-	},
-};
-
-/* ------------------------------------------------------------------------
- * Utility functions
- */
-
-static inline __u8 *uvc_ctrl_data(struct uvc_control *ctrl, int id)
-{
-	return ctrl->uvc_data + id * ctrl->info.size;
-}
-
-static inline int uvc_test_bit(const __u8 *data, int bit)
-{
-	return (data[bit >> 3] >> (bit & 7)) & 1;
-}
-
-static inline void uvc_clear_bit(__u8 *data, int bit)
-{
-	data[bit >> 3] &= ~(1 << (bit & 7));
-}
-
-/* Extract the bit string specified by mapping->offset and mapping->size
- * from the little-endian data stored at 'data' and return the result as
- * a signed 32bit integer. Sign extension will be performed if the mapping
- * references a signed data type.
- */
-static __s32 uvc_get_le_value(struct uvc_control_mapping *mapping,
-	__u8 query, const __u8 *data)
-{
-	int bits = mapping->size;
-	int offset = mapping->offset;
-	__s32 value = 0;
-	__u8 mask;
-
-	data += offset / 8;
-	offset &= 7;
-	mask = ((1LL << bits) - 1) << offset;
-
-	for (; bits > 0; data++) {
-		__u8 byte = *data & mask;
-		value |= offset > 0 ? (byte >> offset) : (byte << (-offset));
-		bits -= 8 - (offset > 0 ? offset : 0);
-		offset -= 8;
-		mask = (1 << bits) - 1;
-	}
-
-	/* Sign-extend the value if needed. */
-	if (mapping->data_type == UVC_CTRL_DATA_TYPE_SIGNED)
-		value |= -(value & (1 << (mapping->size - 1)));
-
-	return value;
-}
-
-/* Set the bit string specified by mapping->offset and mapping->size
- * in the little-endian data stored at 'data' to the value 'value'.
- */
-static void uvc_set_le_value(struct uvc_control_mapping *mapping,
-	__s32 value, __u8 *data)
-{
-	int bits = mapping->size;
-	int offset = mapping->offset;
-	__u8 mask;
-
-	/* According to the v4l2 spec, writing any value to a button control
-	 * should result in the action belonging to the button control being
-	 * triggered. UVC devices however want to see a 1 written -> override
-	 * value.
-	 */
-	if (mapping->v4l2_type == V4L2_CTRL_TYPE_BUTTON)
-		value = -1;
-
-	data += offset / 8;
-	offset &= 7;
-
-	for (; bits > 0; data++) {
-		mask = ((1LL << bits) - 1) << offset;
-		*data = (*data & ~mask) | ((value << offset) & mask);
-		value >>= offset ? offset : 8;
-		bits -= 8 - offset;
-		offset = 0;
-	}
-}
-
-/* ------------------------------------------------------------------------
- * Terminal and unit management
- */
-
-static const __u8 uvc_processing_guid[16] = UVC_GUID_UVC_PROCESSING;
-static const __u8 uvc_camera_guid[16] = UVC_GUID_UVC_CAMERA;
-static const __u8 uvc_media_transport_input_guid[16] =
-	UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT;
-
-static int uvc_entity_match_guid(const struct uvc_entity *entity,
-	const __u8 guid[16])
-{
-	switch (UVC_ENTITY_TYPE(entity)) {
-	case UVC_ITT_CAMERA:
-		return memcmp(uvc_camera_guid, guid, 16) == 0;
-
-	case UVC_ITT_MEDIA_TRANSPORT_INPUT:
-		return memcmp(uvc_media_transport_input_guid, guid, 16) == 0;
-
-	case UVC_VC_PROCESSING_UNIT:
-		return memcmp(uvc_processing_guid, guid, 16) == 0;
-
-	case UVC_VC_EXTENSION_UNIT:
-		return memcmp(entity->extension.guidExtensionCode,
-			      guid, 16) == 0;
-
-	default:
-		return 0;
-	}
-}
-
-/* ------------------------------------------------------------------------
- * UVC Controls
- */
-
-static void __uvc_find_control(struct uvc_entity *entity, __u32 v4l2_id,
-	struct uvc_control_mapping **mapping, struct uvc_control **control,
-	int next)
-{
-	struct uvc_control *ctrl;
-	struct uvc_control_mapping *map;
-	unsigned int i;
-
-	if (entity == NULL)
-		return;
-
-	for (i = 0; i < entity->ncontrols; ++i) {
-		ctrl = &entity->controls[i];
-		if (!ctrl->initialized)
-			continue;
-
-		list_for_each_entry(map, &ctrl->info.mappings, list) {
-			if ((map->id == v4l2_id) && !next) {
-				*control = ctrl;
-				*mapping = map;
-				return;
-			}
-
-			if ((*mapping == NULL || (*mapping)->id > map->id) &&
-			    (map->id > v4l2_id) && next) {
-				*control = ctrl;
-				*mapping = map;
-			}
-		}
-	}
-}
-
-static struct uvc_control *uvc_find_control(struct uvc_video_chain *chain,
-	__u32 v4l2_id, struct uvc_control_mapping **mapping)
-{
-	struct uvc_control *ctrl = NULL;
-	struct uvc_entity *entity;
-	int next = v4l2_id & V4L2_CTRL_FLAG_NEXT_CTRL;
-
-	*mapping = NULL;
-
-	/* Mask the query flags. */
-	v4l2_id &= V4L2_CTRL_ID_MASK;
-
-	/* Find the control. */
-	list_for_each_entry(entity, &chain->entities, chain) {
-		__uvc_find_control(entity, v4l2_id, mapping, &ctrl, next);
-		if (ctrl && !next)
-			return ctrl;
-	}
-
-	if (ctrl == NULL && !next)
-		uvc_trace(UVC_TRACE_CONTROL, "Control 0x%08x not found.\n",
-				v4l2_id);
-
-	return ctrl;
-}
-
-static int uvc_ctrl_populate_cache(struct uvc_video_chain *chain,
-	struct uvc_control *ctrl)
-{
-	int ret;
-
-	if (ctrl->info.flags & UVC_CTRL_FLAG_GET_DEF) {
-		ret = uvc_query_ctrl(chain->dev, UVC_GET_DEF, ctrl->entity->id,
-				     chain->dev->intfnum, ctrl->info.selector,
-				     uvc_ctrl_data(ctrl, UVC_CTRL_DATA_DEF),
-				     ctrl->info.size);
-		if (ret < 0)
-			return ret;
-	}
-
-	if (ctrl->info.flags & UVC_CTRL_FLAG_GET_MIN) {
-		ret = uvc_query_ctrl(chain->dev, UVC_GET_MIN, ctrl->entity->id,
-				     chain->dev->intfnum, ctrl->info.selector,
-				     uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MIN),
-				     ctrl->info.size);
-		if (ret < 0)
-			return ret;
-	}
-	if (ctrl->info.flags & UVC_CTRL_FLAG_GET_MAX) {
-		ret = uvc_query_ctrl(chain->dev, UVC_GET_MAX, ctrl->entity->id,
-				     chain->dev->intfnum, ctrl->info.selector,
-				     uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MAX),
-				     ctrl->info.size);
-		if (ret < 0)
-			return ret;
-	}
-	if (ctrl->info.flags & UVC_CTRL_FLAG_GET_RES) {
-		ret = uvc_query_ctrl(chain->dev, UVC_GET_RES, ctrl->entity->id,
-				     chain->dev->intfnum, ctrl->info.selector,
-				     uvc_ctrl_data(ctrl, UVC_CTRL_DATA_RES),
-				     ctrl->info.size);
-		if (ret < 0) {
-			if (UVC_ENTITY_TYPE(ctrl->entity) !=
-			    UVC_VC_EXTENSION_UNIT)
-				return ret;
-
-			/* GET_RES is mandatory for XU controls, but some
-			 * cameras still choke on it. Ignore errors and set the
-			 * resolution value to zero.
-			 */
-			uvc_warn_once(chain->dev, UVC_WARN_XU_GET_RES,
-				      "UVC non compliance - GET_RES failed on "
-				      "an XU control. Enabling workaround.\n");
-			memset(uvc_ctrl_data(ctrl, UVC_CTRL_DATA_RES), 0,
-			       ctrl->info.size);
-		}
-	}
-
-	ctrl->cached = 1;
-	return 0;
-}
-
-static int __uvc_ctrl_get(struct uvc_video_chain *chain,
-	struct uvc_control *ctrl, struct uvc_control_mapping *mapping,
-	s32 *value)
-{
-	struct uvc_menu_info *menu;
-	unsigned int i;
-	int ret;
-
-	if ((ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR) == 0)
-		return -EINVAL;
-
-	if (!ctrl->loaded) {
-		ret = uvc_query_ctrl(chain->dev, UVC_GET_CUR, ctrl->entity->id,
-				chain->dev->intfnum, ctrl->info.selector,
-				uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT),
-				ctrl->info.size);
-		if (ret < 0)
-			return ret;
-
-		ctrl->loaded = 1;
-	}
-
-	*value = mapping->get(mapping, UVC_GET_CUR,
-		uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT));
-
-	if (mapping->v4l2_type == V4L2_CTRL_TYPE_MENU) {
-		menu = mapping->menu_info;
-		for (i = 0; i < mapping->menu_count; ++i, ++menu) {
-			if (menu->value == *value) {
-				*value = i;
-				break;
-			}
-		}
-	}
-
-	return 0;
-}
-
-static int __uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
-	struct uvc_control *ctrl,
-	struct uvc_control_mapping *mapping,
-	struct v4l2_queryctrl *v4l2_ctrl)
-{
-	struct uvc_control_mapping *master_map = NULL;
-	struct uvc_control *master_ctrl = NULL;
-	struct uvc_menu_info *menu;
-	unsigned int i;
-
-	memset(v4l2_ctrl, 0, sizeof *v4l2_ctrl);
-	v4l2_ctrl->id = mapping->id;
-	v4l2_ctrl->type = mapping->v4l2_type;
-	strlcpy(v4l2_ctrl->name, mapping->name, sizeof v4l2_ctrl->name);
-	v4l2_ctrl->flags = 0;
-
-	if (!(ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR))
-		v4l2_ctrl->flags |= V4L2_CTRL_FLAG_WRITE_ONLY;
-	if (!(ctrl->info.flags & UVC_CTRL_FLAG_SET_CUR))
-		v4l2_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
-
-	if (mapping->master_id)
-		__uvc_find_control(ctrl->entity, mapping->master_id,
-				   &master_map, &master_ctrl, 0);
-	if (master_ctrl && (master_ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR)) {
-		s32 val;
-		int ret = __uvc_ctrl_get(chain, master_ctrl, master_map, &val);
-		if (ret < 0)
-			return ret;
-
-		if (val != mapping->master_manual)
-				v4l2_ctrl->flags |= V4L2_CTRL_FLAG_INACTIVE;
-	}
-
-	if (!ctrl->cached) {
-		int ret = uvc_ctrl_populate_cache(chain, ctrl);
-		if (ret < 0)
-			return ret;
-	}
-
-	if (ctrl->info.flags & UVC_CTRL_FLAG_GET_DEF) {
-		v4l2_ctrl->default_value = mapping->get(mapping, UVC_GET_DEF,
-				uvc_ctrl_data(ctrl, UVC_CTRL_DATA_DEF));
-	}
-
-	switch (mapping->v4l2_type) {
-	case V4L2_CTRL_TYPE_MENU:
-		v4l2_ctrl->minimum = 0;
-		v4l2_ctrl->maximum = mapping->menu_count - 1;
-		v4l2_ctrl->step = 1;
-
-		menu = mapping->menu_info;
-		for (i = 0; i < mapping->menu_count; ++i, ++menu) {
-			if (menu->value == v4l2_ctrl->default_value) {
-				v4l2_ctrl->default_value = i;
-				break;
-			}
-		}
-
-		return 0;
-
-	case V4L2_CTRL_TYPE_BOOLEAN:
-		v4l2_ctrl->minimum = 0;
-		v4l2_ctrl->maximum = 1;
-		v4l2_ctrl->step = 1;
-		return 0;
-
-	case V4L2_CTRL_TYPE_BUTTON:
-		v4l2_ctrl->minimum = 0;
-		v4l2_ctrl->maximum = 0;
-		v4l2_ctrl->step = 0;
-		return 0;
-
-	default:
-		break;
-	}
-
-	if (ctrl->info.flags & UVC_CTRL_FLAG_GET_MIN)
-		v4l2_ctrl->minimum = mapping->get(mapping, UVC_GET_MIN,
-				     uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MIN));
-
-	if (ctrl->info.flags & UVC_CTRL_FLAG_GET_MAX)
-		v4l2_ctrl->maximum = mapping->get(mapping, UVC_GET_MAX,
-				     uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MAX));
-
-	if (ctrl->info.flags & UVC_CTRL_FLAG_GET_RES)
-		v4l2_ctrl->step = mapping->get(mapping, UVC_GET_RES,
-				  uvc_ctrl_data(ctrl, UVC_CTRL_DATA_RES));
-
-	return 0;
-}
-
-int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
-	struct v4l2_queryctrl *v4l2_ctrl)
-{
-	struct uvc_control *ctrl;
-	struct uvc_control_mapping *mapping;
-	int ret;
-
-	ret = mutex_lock_interruptible(&chain->ctrl_mutex);
-	if (ret < 0)
-		return -ERESTARTSYS;
-
-	ctrl = uvc_find_control(chain, v4l2_ctrl->id, &mapping);
-	if (ctrl == NULL) {
-		ret = -EINVAL;
-		goto done;
-	}
-
-	ret = __uvc_query_v4l2_ctrl(chain, ctrl, mapping, v4l2_ctrl);
-done:
-	mutex_unlock(&chain->ctrl_mutex);
-	return ret;
-}
-
-/*
- * Mapping V4L2 controls to UVC controls can be straighforward if done well.
- * Most of the UVC controls exist in V4L2, and can be mapped directly. Some
- * must be grouped (for instance the Red Balance, Blue Balance and Do White
- * Balance V4L2 controls use the White Balance Component UVC control) or
- * otherwise translated. The approach we take here is to use a translation
- * table for the controls that can be mapped directly, and handle the others
- * manually.
- */
-int uvc_query_v4l2_menu(struct uvc_video_chain *chain,
-	struct v4l2_querymenu *query_menu)
-{
-	struct uvc_menu_info *menu_info;
-	struct uvc_control_mapping *mapping;
-	struct uvc_control *ctrl;
-	u32 index = query_menu->index;
-	u32 id = query_menu->id;
-	int ret;
-
-	memset(query_menu, 0, sizeof(*query_menu));
-	query_menu->id = id;
-	query_menu->index = index;
-
-	ret = mutex_lock_interruptible(&chain->ctrl_mutex);
-	if (ret < 0)
-		return -ERESTARTSYS;
-
-	ctrl = uvc_find_control(chain, query_menu->id, &mapping);
-	if (ctrl == NULL || mapping->v4l2_type != V4L2_CTRL_TYPE_MENU) {
-		ret = -EINVAL;
-		goto done;
-	}
-
-	if (query_menu->index >= mapping->menu_count) {
-		ret = -EINVAL;
-		goto done;
-	}
-
-	menu_info = &mapping->menu_info[query_menu->index];
-
-	if (mapping->data_type == UVC_CTRL_DATA_TYPE_BITMASK &&
-	    (ctrl->info.flags & UVC_CTRL_FLAG_GET_RES)) {
-		s32 bitmap;
-
-		if (!ctrl->cached) {
-			ret = uvc_ctrl_populate_cache(chain, ctrl);
-			if (ret < 0)
-				goto done;
-		}
-
-		bitmap = mapping->get(mapping, UVC_GET_RES,
-				      uvc_ctrl_data(ctrl, UVC_CTRL_DATA_RES));
-		if (!(bitmap & menu_info->value)) {
-			ret = -EINVAL;
-			goto done;
-		}
-	}
-
-	strlcpy(query_menu->name, menu_info->name, sizeof query_menu->name);
-
-done:
-	mutex_unlock(&chain->ctrl_mutex);
-	return ret;
-}
-
-/* --------------------------------------------------------------------------
- * Ctrl event handling
- */
-
-static void uvc_ctrl_fill_event(struct uvc_video_chain *chain,
-	struct v4l2_event *ev,
-	struct uvc_control *ctrl,
-	struct uvc_control_mapping *mapping,
-	s32 value, u32 changes)
-{
-	struct v4l2_queryctrl v4l2_ctrl;
-
-	__uvc_query_v4l2_ctrl(chain, ctrl, mapping, &v4l2_ctrl);
-
-	memset(ev->reserved, 0, sizeof(ev->reserved));
-	ev->type = V4L2_EVENT_CTRL;
-	ev->id = v4l2_ctrl.id;
-	ev->u.ctrl.value = value;
-	ev->u.ctrl.changes = changes;
-	ev->u.ctrl.type = v4l2_ctrl.type;
-	ev->u.ctrl.flags = v4l2_ctrl.flags;
-	ev->u.ctrl.minimum = v4l2_ctrl.minimum;
-	ev->u.ctrl.maximum = v4l2_ctrl.maximum;
-	ev->u.ctrl.step = v4l2_ctrl.step;
-	ev->u.ctrl.default_value = v4l2_ctrl.default_value;
-}
-
-static void uvc_ctrl_send_event(struct uvc_fh *handle,
-	struct uvc_control *ctrl, struct uvc_control_mapping *mapping,
-	s32 value, u32 changes)
-{
-	struct v4l2_subscribed_event *sev;
-	struct v4l2_event ev;
-
-	if (list_empty(&mapping->ev_subs))
-		return;
-
-	uvc_ctrl_fill_event(handle->chain, &ev, ctrl, mapping, value, changes);
-
-	list_for_each_entry(sev, &mapping->ev_subs, node) {
-		if (sev->fh && (sev->fh != &handle->vfh ||
-		    (sev->flags & V4L2_EVENT_SUB_FL_ALLOW_FEEDBACK) ||
-		    (changes & V4L2_EVENT_CTRL_CH_FLAGS)))
-			v4l2_event_queue_fh(sev->fh, &ev);
-	}
-}
-
-static void uvc_ctrl_send_slave_event(struct uvc_fh *handle,
-	struct uvc_control *master, u32 slave_id,
-	const struct v4l2_ext_control *xctrls, unsigned int xctrls_count)
-{
-	struct uvc_control_mapping *mapping = NULL;
-	struct uvc_control *ctrl = NULL;
-	u32 changes = V4L2_EVENT_CTRL_CH_FLAGS;
-	unsigned int i;
-	s32 val = 0;
-
-	/*
-	 * We can skip sending an event for the slave if the slave
-	 * is being modified in the same transaction.
-	 */
-	for (i = 0; i < xctrls_count; i++) {
-		if (xctrls[i].id == slave_id)
-			return;
-	}
-
-	__uvc_find_control(master->entity, slave_id, &mapping, &ctrl, 0);
-	if (ctrl == NULL)
-		return;
-
-	if (__uvc_ctrl_get(handle->chain, ctrl, mapping, &val) == 0)
-		changes |= V4L2_EVENT_CTRL_CH_VALUE;
-
-	uvc_ctrl_send_event(handle, ctrl, mapping, val, changes);
-}
-
-static void uvc_ctrl_send_events(struct uvc_fh *handle,
-	const struct v4l2_ext_control *xctrls, unsigned int xctrls_count)
-{
-	struct uvc_control_mapping *mapping;
-	struct uvc_control *ctrl;
-	u32 changes = V4L2_EVENT_CTRL_CH_VALUE;
-	unsigned int i;
-	unsigned int j;
-
-	for (i = 0; i < xctrls_count; ++i) {
-		ctrl = uvc_find_control(handle->chain, xctrls[i].id, &mapping);
-
-		for (j = 0; j < ARRAY_SIZE(mapping->slave_ids); ++j) {
-			if (!mapping->slave_ids[j])
-				break;
-			uvc_ctrl_send_slave_event(handle, ctrl,
-						  mapping->slave_ids[j],
-						  xctrls, xctrls_count);
-		}
-
-		/*
-		 * If the master is being modified in the same transaction
-		 * flags may change too.
-		 */
-		if (mapping->master_id) {
-			for (j = 0; j < xctrls_count; j++) {
-				if (xctrls[j].id == mapping->master_id) {
-					changes |= V4L2_EVENT_CTRL_CH_FLAGS;
-					break;
-				}
-			}
-		}
-
-		uvc_ctrl_send_event(handle, ctrl, mapping, xctrls[i].value,
-				    changes);
-	}
-}
-
-static int uvc_ctrl_add_event(struct v4l2_subscribed_event *sev, unsigned elems)
-{
-	struct uvc_fh *handle = container_of(sev->fh, struct uvc_fh, vfh);
-	struct uvc_control_mapping *mapping;
-	struct uvc_control *ctrl;
-	int ret;
-
-	ret = mutex_lock_interruptible(&handle->chain->ctrl_mutex);
-	if (ret < 0)
-		return -ERESTARTSYS;
-
-	ctrl = uvc_find_control(handle->chain, sev->id, &mapping);
-	if (ctrl == NULL) {
-		ret = -EINVAL;
-		goto done;
-	}
-
-	list_add_tail(&sev->node, &mapping->ev_subs);
-	if (sev->flags & V4L2_EVENT_SUB_FL_SEND_INITIAL) {
-		struct v4l2_event ev;
-		u32 changes = V4L2_EVENT_CTRL_CH_FLAGS;
-		s32 val = 0;
-
-		if (__uvc_ctrl_get(handle->chain, ctrl, mapping, &val) == 0)
-			changes |= V4L2_EVENT_CTRL_CH_VALUE;
-
-		uvc_ctrl_fill_event(handle->chain, &ev, ctrl, mapping, val,
-				    changes);
-		/* Mark the queue as active, allowing this initial
-		   event to be accepted. */
-		sev->elems = elems;
-		v4l2_event_queue_fh(sev->fh, &ev);
-	}
-
-done:
-	mutex_unlock(&handle->chain->ctrl_mutex);
-	return ret;
-}
-
-static void uvc_ctrl_del_event(struct v4l2_subscribed_event *sev)
-{
-	struct uvc_fh *handle = container_of(sev->fh, struct uvc_fh, vfh);
-
-	mutex_lock(&handle->chain->ctrl_mutex);
-	list_del(&sev->node);
-	mutex_unlock(&handle->chain->ctrl_mutex);
-}
-
-const struct v4l2_subscribed_event_ops uvc_ctrl_sub_ev_ops = {
-	.add = uvc_ctrl_add_event,
-	.del = uvc_ctrl_del_event,
-	.replace = v4l2_ctrl_replace,
-	.merge = v4l2_ctrl_merge,
-};
-
-/* --------------------------------------------------------------------------
- * Control transactions
- *
- * To make extended set operations as atomic as the hardware allows, controls
- * are handled using begin/commit/rollback operations.
- *
- * At the beginning of a set request, uvc_ctrl_begin should be called to
- * initialize the request. This function acquires the control lock.
- *
- * When setting a control, the new value is stored in the control data field
- * at position UVC_CTRL_DATA_CURRENT. The control is then marked as dirty for
- * later processing. If the UVC and V4L2 control sizes differ, the current
- * value is loaded from the hardware before storing the new value in the data
- * field.
- *
- * After processing all controls in the transaction, uvc_ctrl_commit or
- * uvc_ctrl_rollback must be called to apply the pending changes to the
- * hardware or revert them. When applying changes, all controls marked as
- * dirty will be modified in the UVC device, and the dirty flag will be
- * cleared. When reverting controls, the control data field
- * UVC_CTRL_DATA_CURRENT is reverted to its previous value
- * (UVC_CTRL_DATA_BACKUP) for all dirty controls. Both functions release the
- * control lock.
- */
-int uvc_ctrl_begin(struct uvc_video_chain *chain)
-{
-	return mutex_lock_interruptible(&chain->ctrl_mutex) ? -ERESTARTSYS : 0;
-}
-
-static int uvc_ctrl_commit_entity(struct uvc_device *dev,
-	struct uvc_entity *entity, int rollback)
-{
-	struct uvc_control *ctrl;
-	unsigned int i;
-	int ret;
-
-	if (entity == NULL)
-		return 0;
-
-	for (i = 0; i < entity->ncontrols; ++i) {
-		ctrl = &entity->controls[i];
-		if (!ctrl->initialized)
-			continue;
-
-		/* Reset the loaded flag for auto-update controls that were
-		 * marked as loaded in uvc_ctrl_get/uvc_ctrl_set to prevent
-		 * uvc_ctrl_get from using the cached value, and for write-only
-		 * controls to prevent uvc_ctrl_set from setting bits not
-		 * explicitly set by the user.
-		 */
-		if (ctrl->info.flags & UVC_CTRL_FLAG_AUTO_UPDATE ||
-		    !(ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR))
-			ctrl->loaded = 0;
-
-		if (!ctrl->dirty)
-			continue;
-
-		if (!rollback)
-			ret = uvc_query_ctrl(dev, UVC_SET_CUR, ctrl->entity->id,
-				dev->intfnum, ctrl->info.selector,
-				uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT),
-				ctrl->info.size);
-		else
-			ret = 0;
-
-		if (rollback || ret < 0)
-			memcpy(uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT),
-			       uvc_ctrl_data(ctrl, UVC_CTRL_DATA_BACKUP),
-			       ctrl->info.size);
-
-		ctrl->dirty = 0;
-
-		if (ret < 0)
-			return ret;
-	}
-
-	return 0;
-}
-
-int __uvc_ctrl_commit(struct uvc_fh *handle, int rollback,
-		      const struct v4l2_ext_control *xctrls,
-		      unsigned int xctrls_count)
-{
-	struct uvc_video_chain *chain = handle->chain;
-	struct uvc_entity *entity;
-	int ret = 0;
-
-	/* Find the control. */
-	list_for_each_entry(entity, &chain->entities, chain) {
-		ret = uvc_ctrl_commit_entity(chain->dev, entity, rollback);
-		if (ret < 0)
-			goto done;
-	}
-
-	if (!rollback)
-		uvc_ctrl_send_events(handle, xctrls, xctrls_count);
-done:
-	mutex_unlock(&chain->ctrl_mutex);
-	return ret;
-}
-
-int uvc_ctrl_get(struct uvc_video_chain *chain,
-	struct v4l2_ext_control *xctrl)
-{
-	struct uvc_control *ctrl;
-	struct uvc_control_mapping *mapping;
-
-	ctrl = uvc_find_control(chain, xctrl->id, &mapping);
-	if (ctrl == NULL)
-		return -EINVAL;
-
-	return __uvc_ctrl_get(chain, ctrl, mapping, &xctrl->value);
-}
-
-int uvc_ctrl_set(struct uvc_video_chain *chain,
-	struct v4l2_ext_control *xctrl)
-{
-	struct uvc_control *ctrl;
-	struct uvc_control_mapping *mapping;
-	s32 value;
-	u32 step;
-	s32 min;
-	s32 max;
-	int ret;
-
-	ctrl = uvc_find_control(chain, xctrl->id, &mapping);
-	if (ctrl == NULL || (ctrl->info.flags & UVC_CTRL_FLAG_SET_CUR) == 0)
-		return -EINVAL;
-
-	/* Clamp out of range values. */
-	switch (mapping->v4l2_type) {
-	case V4L2_CTRL_TYPE_INTEGER:
-		if (!ctrl->cached) {
-			ret = uvc_ctrl_populate_cache(chain, ctrl);
-			if (ret < 0)
-				return ret;
-		}
-
-		min = mapping->get(mapping, UVC_GET_MIN,
-				   uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MIN));
-		max = mapping->get(mapping, UVC_GET_MAX,
-				   uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MAX));
-		step = mapping->get(mapping, UVC_GET_RES,
-				    uvc_ctrl_data(ctrl, UVC_CTRL_DATA_RES));
-		if (step == 0)
-			step = 1;
-
-		xctrl->value = min + (xctrl->value - min + step/2) / step * step;
-		xctrl->value = clamp(xctrl->value, min, max);
-		value = xctrl->value;
-		break;
-
-	case V4L2_CTRL_TYPE_BOOLEAN:
-		xctrl->value = clamp(xctrl->value, 0, 1);
-		value = xctrl->value;
-		break;
-
-	case V4L2_CTRL_TYPE_MENU:
-		if (xctrl->value < 0 || xctrl->value >= mapping->menu_count)
-			return -ERANGE;
-		value = mapping->menu_info[xctrl->value].value;
-
-		/* Valid menu indices are reported by the GET_RES request for
-		 * UVC controls that support it.
-		 */
-		if (mapping->data_type == UVC_CTRL_DATA_TYPE_BITMASK &&
-		    (ctrl->info.flags & UVC_CTRL_FLAG_GET_RES)) {
-			if (!ctrl->cached) {
-				ret = uvc_ctrl_populate_cache(chain, ctrl);
-				if (ret < 0)
-					return ret;
-			}
-
-			step = mapping->get(mapping, UVC_GET_RES,
-					uvc_ctrl_data(ctrl, UVC_CTRL_DATA_RES));
-			if (!(step & value))
-				return -ERANGE;
-		}
-
-		break;
-
-	default:
-		value = xctrl->value;
-		break;
-	}
-
-	/* If the mapping doesn't span the whole UVC control, the current value
-	 * needs to be loaded from the device to perform the read-modify-write
-	 * operation.
-	 */
-	if (!ctrl->loaded && (ctrl->info.size * 8) != mapping->size) {
-		if ((ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR) == 0) {
-			memset(uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT),
-				0, ctrl->info.size);
-		} else {
-			ret = uvc_query_ctrl(chain->dev, UVC_GET_CUR,
-				ctrl->entity->id, chain->dev->intfnum,
-				ctrl->info.selector,
-				uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT),
-				ctrl->info.size);
-			if (ret < 0)
-				return ret;
-		}
-
-		ctrl->loaded = 1;
-	}
-
-	/* Backup the current value in case we need to rollback later. */
-	if (!ctrl->dirty) {
-		memcpy(uvc_ctrl_data(ctrl, UVC_CTRL_DATA_BACKUP),
-		       uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT),
-		       ctrl->info.size);
-	}
-
-	mapping->set(mapping, value,
-		uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT));
-
-	ctrl->dirty = 1;
-	ctrl->modified = 1;
-	return 0;
-}
-
-/* --------------------------------------------------------------------------
- * Dynamic controls
- */
-
-static void uvc_ctrl_fixup_xu_info(struct uvc_device *dev,
-	const struct uvc_control *ctrl, struct uvc_control_info *info)
-{
-	struct uvc_ctrl_fixup {
-		struct usb_device_id id;
-		u8 entity;
-		u8 selector;
-		u8 flags;
-	};
-
-	static const struct uvc_ctrl_fixup fixups[] = {
-		{ { USB_DEVICE(0x046d, 0x08c2) }, 9, 1,
-			UVC_CTRL_FLAG_GET_MIN | UVC_CTRL_FLAG_GET_MAX |
-			UVC_CTRL_FLAG_GET_DEF | UVC_CTRL_FLAG_SET_CUR |
-			UVC_CTRL_FLAG_AUTO_UPDATE },
-		{ { USB_DEVICE(0x046d, 0x08cc) }, 9, 1,
-			UVC_CTRL_FLAG_GET_MIN | UVC_CTRL_FLAG_GET_MAX |
-			UVC_CTRL_FLAG_GET_DEF | UVC_CTRL_FLAG_SET_CUR |
-			UVC_CTRL_FLAG_AUTO_UPDATE },
-		{ { USB_DEVICE(0x046d, 0x0994) }, 9, 1,
-			UVC_CTRL_FLAG_GET_MIN | UVC_CTRL_FLAG_GET_MAX |
-			UVC_CTRL_FLAG_GET_DEF | UVC_CTRL_FLAG_SET_CUR |
-			UVC_CTRL_FLAG_AUTO_UPDATE },
-	};
-
-	unsigned int i;
-
-	for (i = 0; i < ARRAY_SIZE(fixups); ++i) {
-		if (!usb_match_one_id(dev->intf, &fixups[i].id))
-			continue;
-
-		if (fixups[i].entity == ctrl->entity->id &&
-		    fixups[i].selector == info->selector) {
-			info->flags = fixups[i].flags;
-			return;
-		}
-	}
-}
-
-/*
- * Query control information (size and flags) for XU controls.
- */
-static int uvc_ctrl_fill_xu_info(struct uvc_device *dev,
-	const struct uvc_control *ctrl, struct uvc_control_info *info)
-{
-	u8 *data;
-	int ret;
-
-	data = kmalloc(2, GFP_KERNEL);
-	if (data == NULL)
-		return -ENOMEM;
-
-	memcpy(info->entity, ctrl->entity->extension.guidExtensionCode,
-	       sizeof(info->entity));
-	info->index = ctrl->index;
-	info->selector = ctrl->index + 1;
-
-	/* Query and verify the control length (GET_LEN) */
-	ret = uvc_query_ctrl(dev, UVC_GET_LEN, ctrl->entity->id, dev->intfnum,
-			     info->selector, data, 2);
-	if (ret < 0) {
-		uvc_trace(UVC_TRACE_CONTROL,
-			  "GET_LEN failed on control %pUl/%u (%d).\n",
-			   info->entity, info->selector, ret);
-		goto done;
-	}
-
-	info->size = le16_to_cpup((__le16 *)data);
-
-	/* Query the control information (GET_INFO) */
-	ret = uvc_query_ctrl(dev, UVC_GET_INFO, ctrl->entity->id, dev->intfnum,
-			     info->selector, data, 1);
-	if (ret < 0) {
-		uvc_trace(UVC_TRACE_CONTROL,
-			  "GET_INFO failed on control %pUl/%u (%d).\n",
-			  info->entity, info->selector, ret);
-		goto done;
-	}
-
-	info->flags = UVC_CTRL_FLAG_GET_MIN | UVC_CTRL_FLAG_GET_MAX
-		    | UVC_CTRL_FLAG_GET_RES | UVC_CTRL_FLAG_GET_DEF
-		    | (data[0] & UVC_CONTROL_CAP_GET ?
-		       UVC_CTRL_FLAG_GET_CUR : 0)
-		    | (data[0] & UVC_CONTROL_CAP_SET ?
-		       UVC_CTRL_FLAG_SET_CUR : 0)
-		    | (data[0] & UVC_CONTROL_CAP_AUTOUPDATE ?
-		       UVC_CTRL_FLAG_AUTO_UPDATE : 0);
-
-	uvc_ctrl_fixup_xu_info(dev, ctrl, info);
-
-	uvc_trace(UVC_TRACE_CONTROL, "XU control %pUl/%u queried: len %u, "
-		  "flags { get %u set %u auto %u }.\n",
-		  info->entity, info->selector, info->size,
-		  (info->flags & UVC_CTRL_FLAG_GET_CUR) ? 1 : 0,
-		  (info->flags & UVC_CTRL_FLAG_SET_CUR) ? 1 : 0,
-		  (info->flags & UVC_CTRL_FLAG_AUTO_UPDATE) ? 1 : 0);
-
-done:
-	kfree(data);
-	return ret;
-}
-
-static int uvc_ctrl_add_info(struct uvc_device *dev, struct uvc_control *ctrl,
-	const struct uvc_control_info *info);
-
-static int uvc_ctrl_init_xu_ctrl(struct uvc_device *dev,
-	struct uvc_control *ctrl)
-{
-	struct uvc_control_info info;
-	int ret;
-
-	if (ctrl->initialized)
-		return 0;
-
-	ret = uvc_ctrl_fill_xu_info(dev, ctrl, &info);
-	if (ret < 0)
-		return ret;
-
-	ret = uvc_ctrl_add_info(dev, ctrl, &info);
-	if (ret < 0)
-		uvc_trace(UVC_TRACE_CONTROL, "Failed to initialize control "
-			  "%pUl/%u on device %s entity %u\n", info.entity,
-			  info.selector, dev->udev->devpath, ctrl->entity->id);
-
-	return ret;
-}
-
-int uvc_xu_ctrl_query(struct uvc_video_chain *chain,
-	struct uvc_xu_control_query *xqry)
-{
-	struct uvc_entity *entity;
-	struct uvc_control *ctrl;
-	unsigned int i, found = 0;
-	__u32 reqflags;
-	__u16 size;
-	__u8 *data = NULL;
-	int ret;
-
-	/* Find the extension unit. */
-	list_for_each_entry(entity, &chain->entities, chain) {
-		if (UVC_ENTITY_TYPE(entity) == UVC_VC_EXTENSION_UNIT &&
-		    entity->id == xqry->unit)
-			break;
-	}
-
-	if (entity->id != xqry->unit) {
-		uvc_trace(UVC_TRACE_CONTROL, "Extension unit %u not found.\n",
-			xqry->unit);
-		return -ENOENT;
-	}
-
-	/* Find the control and perform delayed initialization if needed. */
-	for (i = 0; i < entity->ncontrols; ++i) {
-		ctrl = &entity->controls[i];
-		if (ctrl->index == xqry->selector - 1) {
-			found = 1;
-			break;
-		}
-	}
-
-	if (!found) {
-		uvc_trace(UVC_TRACE_CONTROL, "Control %pUl/%u not found.\n",
-			entity->extension.guidExtensionCode, xqry->selector);
-		return -ENOENT;
-	}
-
-	if (mutex_lock_interruptible(&chain->ctrl_mutex))
-		return -ERESTARTSYS;
-
-	ret = uvc_ctrl_init_xu_ctrl(chain->dev, ctrl);
-	if (ret < 0) {
-		ret = -ENOENT;
-		goto done;
-	}
-
-	/* Validate the required buffer size and flags for the request */
-	reqflags = 0;
-	size = ctrl->info.size;
-
-	switch (xqry->query) {
-	case UVC_GET_CUR:
-		reqflags = UVC_CTRL_FLAG_GET_CUR;
-		break;
-	case UVC_GET_MIN:
-		reqflags = UVC_CTRL_FLAG_GET_MIN;
-		break;
-	case UVC_GET_MAX:
-		reqflags = UVC_CTRL_FLAG_GET_MAX;
-		break;
-	case UVC_GET_DEF:
-		reqflags = UVC_CTRL_FLAG_GET_DEF;
-		break;
-	case UVC_GET_RES:
-		reqflags = UVC_CTRL_FLAG_GET_RES;
-		break;
-	case UVC_SET_CUR:
-		reqflags = UVC_CTRL_FLAG_SET_CUR;
-		break;
-	case UVC_GET_LEN:
-		size = 2;
-		break;
-	case UVC_GET_INFO:
-		size = 1;
-		break;
-	default:
-		ret = -EINVAL;
-		goto done;
-	}
-
-	if (size != xqry->size) {
-		ret = -ENOBUFS;
-		goto done;
-	}
-
-	if (reqflags && !(ctrl->info.flags & reqflags)) {
-		ret = -EBADRQC;
-		goto done;
-	}
-
-	data = kmalloc(size, GFP_KERNEL);
-	if (data == NULL) {
-		ret = -ENOMEM;
-		goto done;
-	}
-
-	if (xqry->query == UVC_SET_CUR &&
-	    copy_from_user(data, xqry->data, size)) {
-		ret = -EFAULT;
-		goto done;
-	}
-
-	ret = uvc_query_ctrl(chain->dev, xqry->query, xqry->unit,
-			     chain->dev->intfnum, xqry->selector, data, size);
-	if (ret < 0)
-		goto done;
-
-	if (xqry->query != UVC_SET_CUR &&
-	    copy_to_user(xqry->data, data, size))
-		ret = -EFAULT;
-done:
-	kfree(data);
-	mutex_unlock(&chain->ctrl_mutex);
-	return ret;
-}
-
-/* --------------------------------------------------------------------------
- * Suspend/resume
- */
-
-/*
- * Restore control values after resume, skipping controls that haven't been
- * changed.
- *
- * TODO
- * - Don't restore modified controls that are back to their default value.
- * - Handle restore order (Auto-Exposure Mode should be restored before
- *   Exposure Time).
- */
-int uvc_ctrl_resume_device(struct uvc_device *dev)
-{
-	struct uvc_control *ctrl;
-	struct uvc_entity *entity;
-	unsigned int i;
-	int ret;
-
-	/* Walk the entities list and restore controls when possible. */
-	list_for_each_entry(entity, &dev->entities, list) {
-
-		for (i = 0; i < entity->ncontrols; ++i) {
-			ctrl = &entity->controls[i];
-
-			if (!ctrl->initialized || !ctrl->modified ||
-			    (ctrl->info.flags & UVC_CTRL_FLAG_RESTORE) == 0)
-				continue;
-
-			printk(KERN_INFO "restoring control %pUl/%u/%u\n",
-				ctrl->info.entity, ctrl->info.index,
-				ctrl->info.selector);
-			ctrl->dirty = 1;
-		}
-
-		ret = uvc_ctrl_commit_entity(dev, entity, 0);
-		if (ret < 0)
-			return ret;
-	}
-
-	return 0;
-}
-
-/* --------------------------------------------------------------------------
- * Control and mapping handling
- */
-
-/*
- * Add control information to a given control.
- */
-static int uvc_ctrl_add_info(struct uvc_device *dev, struct uvc_control *ctrl,
-	const struct uvc_control_info *info)
-{
-	int ret = 0;
-
-	memcpy(&ctrl->info, info, sizeof(*info));
-	INIT_LIST_HEAD(&ctrl->info.mappings);
-
-	/* Allocate an array to save control values (cur, def, max, etc.) */
-	ctrl->uvc_data = kzalloc(ctrl->info.size * UVC_CTRL_DATA_LAST + 1,
-				 GFP_KERNEL);
-	if (ctrl->uvc_data == NULL) {
-		ret = -ENOMEM;
-		goto done;
-	}
-
-	ctrl->initialized = 1;
-
-	uvc_trace(UVC_TRACE_CONTROL, "Added control %pUl/%u to device %s "
-		"entity %u\n", ctrl->info.entity, ctrl->info.selector,
-		dev->udev->devpath, ctrl->entity->id);
-
-done:
-	if (ret < 0)
-		kfree(ctrl->uvc_data);
-	return ret;
-}
-
-/*
- * Add a control mapping to a given control.
- */
-static int __uvc_ctrl_add_mapping(struct uvc_device *dev,
-	struct uvc_control *ctrl, const struct uvc_control_mapping *mapping)
-{
-	struct uvc_control_mapping *map;
-	unsigned int size;
-
-	/* Most mappings come from static kernel data and need to be duplicated.
-	 * Mappings that come from userspace will be unnecessarily duplicated,
-	 * this could be optimized.
-	 */
-	map = kmemdup(mapping, sizeof(*mapping), GFP_KERNEL);
-	if (map == NULL)
-		return -ENOMEM;
-
-	INIT_LIST_HEAD(&map->ev_subs);
-
-	size = sizeof(*mapping->menu_info) * mapping->menu_count;
-	map->menu_info = kmemdup(mapping->menu_info, size, GFP_KERNEL);
-	if (map->menu_info == NULL) {
-		kfree(map);
-		return -ENOMEM;
-	}
-
-	if (map->get == NULL)
-		map->get = uvc_get_le_value;
-	if (map->set == NULL)
-		map->set = uvc_set_le_value;
-
-	list_add_tail(&map->list, &ctrl->info.mappings);
-	uvc_trace(UVC_TRACE_CONTROL,
-		"Adding mapping '%s' to control %pUl/%u.\n",
-		map->name, ctrl->info.entity, ctrl->info.selector);
-
-	return 0;
-}
-
-int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
-	const struct uvc_control_mapping *mapping)
-{
-	struct uvc_device *dev = chain->dev;
-	struct uvc_control_mapping *map;
-	struct uvc_entity *entity;
-	struct uvc_control *ctrl;
-	int found = 0;
-	int ret;
-
-	if (mapping->id & ~V4L2_CTRL_ID_MASK) {
-		uvc_trace(UVC_TRACE_CONTROL, "Can't add mapping '%s', control "
-			"id 0x%08x is invalid.\n", mapping->name,
-			mapping->id);
-		return -EINVAL;
-	}
-
-	/* Search for the matching (GUID/CS) control on the current chain */
-	list_for_each_entry(entity, &chain->entities, chain) {
-		unsigned int i;
-
-		if (UVC_ENTITY_TYPE(entity) != UVC_VC_EXTENSION_UNIT ||
-		    !uvc_entity_match_guid(entity, mapping->entity))
-			continue;
-
-		for (i = 0; i < entity->ncontrols; ++i) {
-			ctrl = &entity->controls[i];
-			if (ctrl->index == mapping->selector - 1) {
-				found = 1;
-				break;
-			}
-		}
-
-		if (found)
-			break;
-	}
-	if (!found)
-		return -ENOENT;
-
-	if (mutex_lock_interruptible(&chain->ctrl_mutex))
-		return -ERESTARTSYS;
-
-	/* Perform delayed initialization of XU controls */
-	ret = uvc_ctrl_init_xu_ctrl(dev, ctrl);
-	if (ret < 0) {
-		ret = -ENOENT;
-		goto done;
-	}
-
-	list_for_each_entry(map, &ctrl->info.mappings, list) {
-		if (mapping->id == map->id) {
-			uvc_trace(UVC_TRACE_CONTROL, "Can't add mapping '%s', "
-				"control id 0x%08x already exists.\n",
-				mapping->name, mapping->id);
-			ret = -EEXIST;
-			goto done;
-		}
-	}
-
-	/* Prevent excess memory consumption */
-	if (atomic_inc_return(&dev->nmappings) > UVC_MAX_CONTROL_MAPPINGS) {
-		atomic_dec(&dev->nmappings);
-		uvc_trace(UVC_TRACE_CONTROL, "Can't add mapping '%s', maximum "
-			"mappings count (%u) exceeded.\n", mapping->name,
-			UVC_MAX_CONTROL_MAPPINGS);
-		ret = -ENOMEM;
-		goto done;
-	}
-
-	ret = __uvc_ctrl_add_mapping(dev, ctrl, mapping);
-	if (ret < 0)
-		atomic_dec(&dev->nmappings);
-
-done:
-	mutex_unlock(&chain->ctrl_mutex);
-	return ret;
-}
-
-/*
- * Prune an entity of its bogus controls using a blacklist. Bogus controls
- * are currently the ones that crash the camera or unconditionally return an
- * error when queried.
- */
-static void uvc_ctrl_prune_entity(struct uvc_device *dev,
-	struct uvc_entity *entity)
-{
-	struct uvc_ctrl_blacklist {
-		struct usb_device_id id;
-		u8 index;
-	};
-
-	static const struct uvc_ctrl_blacklist processing_blacklist[] = {
-		{ { USB_DEVICE(0x13d3, 0x509b) }, 9 }, /* Gain */
-		{ { USB_DEVICE(0x1c4f, 0x3000) }, 6 }, /* WB Temperature */
-		{ { USB_DEVICE(0x5986, 0x0241) }, 2 }, /* Hue */
-	};
-	static const struct uvc_ctrl_blacklist camera_blacklist[] = {
-		{ { USB_DEVICE(0x06f8, 0x3005) }, 9 }, /* Zoom, Absolute */
-	};
-
-	const struct uvc_ctrl_blacklist *blacklist;
-	unsigned int size;
-	unsigned int count;
-	unsigned int i;
-	u8 *controls;
-
-	switch (UVC_ENTITY_TYPE(entity)) {
-	case UVC_VC_PROCESSING_UNIT:
-		blacklist = processing_blacklist;
-		count = ARRAY_SIZE(processing_blacklist);
-		controls = entity->processing.bmControls;
-		size = entity->processing.bControlSize;
-		break;
-
-	case UVC_ITT_CAMERA:
-		blacklist = camera_blacklist;
-		count = ARRAY_SIZE(camera_blacklist);
-		controls = entity->camera.bmControls;
-		size = entity->camera.bControlSize;
-		break;
-
-	default:
-		return;
-	}
-
-	for (i = 0; i < count; ++i) {
-		if (!usb_match_one_id(dev->intf, &blacklist[i].id))
-			continue;
-
-		if (blacklist[i].index >= 8 * size ||
-		    !uvc_test_bit(controls, blacklist[i].index))
-			continue;
-
-		uvc_trace(UVC_TRACE_CONTROL, "%u/%u control is black listed, "
-			"removing it.\n", entity->id, blacklist[i].index);
-
-		uvc_clear_bit(controls, blacklist[i].index);
-	}
-}
-
-/*
- * Add control information and hardcoded stock control mappings to the given
- * device.
- */
-static void uvc_ctrl_init_ctrl(struct uvc_device *dev, struct uvc_control *ctrl)
-{
-	const struct uvc_control_info *info = uvc_ctrls;
-	const struct uvc_control_info *iend = info + ARRAY_SIZE(uvc_ctrls);
-	const struct uvc_control_mapping *mapping = uvc_ctrl_mappings;
-	const struct uvc_control_mapping *mend =
-		mapping + ARRAY_SIZE(uvc_ctrl_mappings);
-
-	/* XU controls initialization requires querying the device for control
-	 * information. As some buggy UVC devices will crash when queried
-	 * repeatedly in a tight loop, delay XU controls initialization until
-	 * first use.
-	 */
-	if (UVC_ENTITY_TYPE(ctrl->entity) == UVC_VC_EXTENSION_UNIT)
-		return;
-
-	for (; info < iend; ++info) {
-		if (uvc_entity_match_guid(ctrl->entity, info->entity) &&
-		    ctrl->index == info->index) {
-			uvc_ctrl_add_info(dev, ctrl, info);
-			break;
-		 }
-	}
-
-	if (!ctrl->initialized)
-		return;
-
-	for (; mapping < mend; ++mapping) {
-		if (uvc_entity_match_guid(ctrl->entity, mapping->entity) &&
-		    ctrl->info.selector == mapping->selector)
-			__uvc_ctrl_add_mapping(dev, ctrl, mapping);
-	}
-}
-
-/*
- * Initialize device controls.
- */
-int uvc_ctrl_init_device(struct uvc_device *dev)
-{
-	struct uvc_entity *entity;
-	unsigned int i;
-
-	/* Walk the entities list and instantiate controls */
-	list_for_each_entry(entity, &dev->entities, list) {
-		struct uvc_control *ctrl;
-		unsigned int bControlSize = 0, ncontrols;
-		__u8 *bmControls = NULL;
-
-		if (UVC_ENTITY_TYPE(entity) == UVC_VC_EXTENSION_UNIT) {
-			bmControls = entity->extension.bmControls;
-			bControlSize = entity->extension.bControlSize;
-		} else if (UVC_ENTITY_TYPE(entity) == UVC_VC_PROCESSING_UNIT) {
-			bmControls = entity->processing.bmControls;
-			bControlSize = entity->processing.bControlSize;
-		} else if (UVC_ENTITY_TYPE(entity) == UVC_ITT_CAMERA) {
-			bmControls = entity->camera.bmControls;
-			bControlSize = entity->camera.bControlSize;
-		}
-
-		/* Remove bogus/blacklisted controls */
-		uvc_ctrl_prune_entity(dev, entity);
-
-		/* Count supported controls and allocate the controls array */
-		ncontrols = memweight(bmControls, bControlSize);
-		if (ncontrols == 0)
-			continue;
-
-		entity->controls = kcalloc(ncontrols, sizeof(*ctrl),
-					   GFP_KERNEL);
-		if (entity->controls == NULL)
-			return -ENOMEM;
-		entity->ncontrols = ncontrols;
-
-		/* Initialize all supported controls */
-		ctrl = entity->controls;
-		for (i = 0; i < bControlSize * 8; ++i) {
-			if (uvc_test_bit(bmControls, i) == 0)
-				continue;
-
-			ctrl->entity = entity;
-			ctrl->index = i;
-
-			uvc_ctrl_init_ctrl(dev, ctrl);
-			ctrl++;
-		}
-	}
-
-	return 0;
-}
-
-/*
- * Cleanup device controls.
- */
-static void uvc_ctrl_cleanup_mappings(struct uvc_device *dev,
-	struct uvc_control *ctrl)
-{
-	struct uvc_control_mapping *mapping, *nm;
-
-	list_for_each_entry_safe(mapping, nm, &ctrl->info.mappings, list) {
-		list_del(&mapping->list);
-		kfree(mapping->menu_info);
-		kfree(mapping);
-	}
-}
-
-void uvc_ctrl_cleanup_device(struct uvc_device *dev)
-{
-	struct uvc_entity *entity;
-	unsigned int i;
-
-	/* Free controls and control mappings for all entities. */
-	list_for_each_entry(entity, &dev->entities, list) {
-		for (i = 0; i < entity->ncontrols; ++i) {
-			struct uvc_control *ctrl = &entity->controls[i];
-
-			if (!ctrl->initialized)
-				continue;
-
-			uvc_ctrl_cleanup_mappings(dev, ctrl);
-			kfree(ctrl->uvc_data);
-		}
-
-		kfree(entity->controls);
-	}
-}