[GitHub/LineageOS/android_kernel_samsung_universal7580.git] / drivers / media / video / uvc / uvcvideo.h

#ifndef _USB_VIDEO_H_
#define _USB_VIDEO_H_

#ifndef __KERNEL__
#error "The uvcvideo.h header is deprecated, use linux/uvcvideo.h instead."
#endif /* __KERNEL__ */

#include <linux/kernel.h>
#include <linux/poll.h>
#include <linux/usb.h>
#include <linux/usb/video.h>
#include <linux/uvcvideo.h>
#include <linux/videodev2.h>
#include <media/media-device.h>
#include <media/v4l2-device.h>
#include <media/videobuf2-core.h>

/* --------------------------------------------------------------------------
 * UVC constants
 */

#define UVC_TERM_INPUT			0x0000
#define UVC_TERM_OUTPUT			0x8000
#define UVC_TERM_DIRECTION(term)	((term)->type & 0x8000)

#define UVC_ENTITY_TYPE(entity)		((entity)->type & 0x7fff)
#define UVC_ENTITY_IS_UNIT(entity)	(((entity)->type & 0xff00) == 0)
#define UVC_ENTITY_IS_TERM(entity)	(((entity)->type & 0xff00) != 0)
#define UVC_ENTITY_IS_ITERM(entity) \
	(UVC_ENTITY_IS_TERM(entity) && \
	((entity)->type & 0x8000) == UVC_TERM_INPUT)
#define UVC_ENTITY_IS_OTERM(entity) \
	(UVC_ENTITY_IS_TERM(entity) && \
	((entity)->type & 0x8000) == UVC_TERM_OUTPUT)


/* ------------------------------------------------------------------------
 * GUIDs
 */
#define UVC_GUID_UVC_CAMERA \
	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
	 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}
#define UVC_GUID_UVC_OUTPUT \
	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
	 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02}
#define UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT \
	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
	 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03}
#define UVC_GUID_UVC_PROCESSING \
	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
	 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01}
#define UVC_GUID_UVC_SELECTOR \
	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
	 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02}

#define UVC_GUID_FORMAT_MJPEG \
	{ 'M',  'J',  'P',  'G', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_YUY2 \
	{ 'Y',  'U',  'Y',  '2', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_YUY2_ISIGHT \
	{ 'Y',  'U',  'Y',  '2', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0x00, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_NV12 \
	{ 'N',  'V',  '1',  '2', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_YV12 \
	{ 'Y',  'V',  '1',  '2', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_I420 \
	{ 'I',  '4',  '2',  '0', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_UYVY \
	{ 'U',  'Y',  'V',  'Y', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_Y800 \
	{ 'Y',  '8',  '0',  '0', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_Y16 \
	{ 'Y',  '1',  '6',  ' ', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_BY8 \
	{ 'B',  'Y',  '8',  ' ', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_RGBP \
	{ 'R',  'G',  'B',  'P', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_M420 \
	{ 'M',  '4',  '2',  '0', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}

#define UVC_GUID_FORMAT_H264 \
	{ 'H',  '2',  '6',  '4', 0x00, 0x00, 0x10, 0x00, \
	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}

/* ------------------------------------------------------------------------
 * Driver specific constants.
 */

#define DRIVER_VERSION		"1.1.1"

/* Number of isochronous URBs. */
#define UVC_URBS		5
/* Maximum number of packets per URB. */
#define UVC_MAX_PACKETS		32
/* Maximum number of video buffers. */
#define UVC_MAX_VIDEO_BUFFERS	32
/* Maximum status buffer size in bytes of interrupt URB. */
#define UVC_MAX_STATUS_SIZE	16

#define UVC_CTRL_CONTROL_TIMEOUT	300
#define UVC_CTRL_STREAMING_TIMEOUT	5000

/* Maximum allowed number of control mappings per device */
#define UVC_MAX_CONTROL_MAPPINGS	1024

/* Devices quirks */
#define UVC_QUIRK_STATUS_INTERVAL	0x00000001
#define UVC_QUIRK_PROBE_MINMAX		0x00000002
#define UVC_QUIRK_PROBE_EXTRAFIELDS	0x00000004
#define UVC_QUIRK_BUILTIN_ISIGHT	0x00000008
#define UVC_QUIRK_STREAM_NO_FID		0x00000010
#define UVC_QUIRK_IGNORE_SELECTOR_UNIT	0x00000020
#define UVC_QUIRK_FIX_BANDWIDTH		0x00000080
#define UVC_QUIRK_PROBE_DEF		0x00000100
#define UVC_QUIRK_RESTRICT_FRAME_RATE	0x00000200

/* Format flags */
#define UVC_FMT_FLAG_COMPRESSED		0x00000001
#define UVC_FMT_FLAG_STREAM		0x00000002

/* ------------------------------------------------------------------------
 * Structures.
 */

struct uvc_device;

/* TODO: Put the most frequently accessed fields at the beginning of
 * structures to maximize cache efficiency.
 */
struct uvc_control_info {
	struct list_head mappings;

	__u8 entity[16];
	__u8 index;	/* Bit index in bmControls */
	__u8 selector;

	__u16 size;
	__u32 flags;
};

struct uvc_control_mapping {
	struct list_head list;

	struct uvc_control_info *ctrl;

	__u32 id;
	__u8 name[32];
	__u8 entity[16];
	__u8 selector;

	__u8 size;
	__u8 offset;
	enum v4l2_ctrl_type v4l2_type;
	__u32 data_type;

	struct uvc_menu_info *menu_info;
	__u32 menu_count;

	__s32 (*get) (struct uvc_control_mapping *mapping, __u8 query,
		      const __u8 *data);
	void (*set) (struct uvc_control_mapping *mapping, __s32 value,
		     __u8 *data);
};

struct uvc_control {
	struct uvc_entity *entity;
	struct uvc_control_info info;

	__u8 index;	/* Used to match the uvc_control entry with a
			   uvc_control_info. */
	__u8 dirty:1,
	     loaded:1,
	     modified:1,
	     cached:1,
	     initialized:1;

	__u8 *uvc_data;
};

struct uvc_format_desc {
	char *name;
	__u8 guid[16];
	__u32 fcc;
};

/* The term 'entity' refers to both UVC units and UVC terminals.
 *
 * The type field is either the terminal type (wTerminalType in the terminal
 * descriptor), or the unit type (bDescriptorSubtype in the unit descriptor).
 * As the bDescriptorSubtype field is one byte long, the type value will
 * always have a null MSB for units. All terminal types defined by the UVC
 * specification have a non-null MSB, so it is safe to use the MSB to
 * differentiate between units and terminals as long as the descriptor parsing
 * code makes sure terminal types have a non-null MSB.
 *
 * For terminals, the type's most significant bit stores the terminal
 * direction (either UVC_TERM_INPUT or UVC_TERM_OUTPUT). The type field should
 * always be accessed with the UVC_ENTITY_* macros and never directly.
 */

struct uvc_entity {
	struct list_head list;		/* Entity as part of a UVC device. */
	struct list_head chain;		/* Entity as part of a video device
					 * chain. */
	__u8 id;
	__u16 type;
	char name[64];

	/* Media controller-related fields. */
	struct video_device *vdev;
	struct v4l2_subdev subdev;
	unsigned int num_pads;
	unsigned int num_links;
	struct media_pad *pads;

	union {
		struct {
			__u16 wObjectiveFocalLengthMin;
			__u16 wObjectiveFocalLengthMax;
			__u16 wOcularFocalLength;
			__u8  bControlSize;
			__u8  *bmControls;
		} camera;

		struct {
			__u8  bControlSize;
			__u8  *bmControls;
			__u8  bTransportModeSize;
			__u8  *bmTransportModes;
		} media;

		struct {
		} output;

		struct {
			__u16 wMaxMultiplier;
			__u8  bControlSize;
			__u8  *bmControls;
			__u8  bmVideoStandards;
		} processing;

		struct {
		} selector;

		struct {
			__u8  guidExtensionCode[16];
			__u8  bNumControls;
			__u8  bControlSize;
			__u8  *bmControls;
			__u8  *bmControlsType;
		} extension;
	};

	__u8 bNrInPins;
	__u8 *baSourceID;

	unsigned int ncontrols;
	struct uvc_control *controls;
};

struct uvc_frame {
	__u8  bFrameIndex;
	__u8  bmCapabilities;
	__u16 wWidth;
	__u16 wHeight;
	__u32 dwMinBitRate;
	__u32 dwMaxBitRate;
	__u32 dwMaxVideoFrameBufferSize;
	__u8  bFrameIntervalType;
	__u32 dwDefaultFrameInterval;
	__u32 *dwFrameInterval;
};

struct uvc_format {
	__u8 type;
	__u8 index;
	__u8 bpp;
	__u8 colorspace;
	__u32 fcc;
	__u32 flags;

	char name[32];

	unsigned int nframes;
	struct uvc_frame *frame;
};

struct uvc_streaming_header {
	__u8 bNumFormats;
	__u8 bEndpointAddress;
	__u8 bTerminalLink;
	__u8 bControlSize;
	__u8 *bmaControls;
	/* The following fields are used by input headers only. */
	__u8 bmInfo;
	__u8 bStillCaptureMethod;
	__u8 bTriggerSupport;
	__u8 bTriggerUsage;
};

enum uvc_buffer_state {
	UVC_BUF_STATE_IDLE	= 0,
	UVC_BUF_STATE_QUEUED	= 1,
	UVC_BUF_STATE_ACTIVE	= 2,
	UVC_BUF_STATE_READY	= 3,
	UVC_BUF_STATE_DONE	= 4,
	UVC_BUF_STATE_ERROR	= 5,
};

struct uvc_buffer {
	struct vb2_buffer buf;
	struct list_head queue;

	enum uvc_buffer_state state;
	unsigned int error;

	void *mem;
	unsigned int length;
	unsigned int bytesused;
};

#define UVC_QUEUE_DISCONNECTED		(1 << 0)
#define UVC_QUEUE_DROP_CORRUPTED	(1 << 1)

struct uvc_video_queue {
	struct vb2_queue queue;
	struct mutex mutex;			/* Protects queue */

	unsigned int flags;
	unsigned int buf_used;

	spinlock_t irqlock;			/* Protects irqqueue */
	struct list_head irqqueue;
};

struct uvc_video_chain {
	struct uvc_device *dev;
	struct list_head list;

	struct list_head entities;		/* All entities */
	struct uvc_entity *processing;		/* Processing unit */
	struct uvc_entity *selector;		/* Selector unit */

	struct mutex ctrl_mutex;		/* Protects ctrl.info */
};

struct uvc_streaming {
	struct list_head list;
	struct uvc_device *dev;
	struct video_device *vdev;
	struct uvc_video_chain *chain;
	atomic_t active;

	struct usb_interface *intf;
	int intfnum;
	__u16 maxpsize;

	struct uvc_streaming_header header;
	enum v4l2_buf_type type;

	unsigned int nformats;
	struct uvc_format *format;

	struct uvc_streaming_control ctrl;
	struct uvc_format *cur_format;
	struct uvc_frame *cur_frame;
	/* Protect access to ctrl, cur_format, cur_frame and hardware video
	 * probe control.
	 */
	struct mutex mutex;

	/* Buffers queue. */
	unsigned int frozen : 1;
	struct uvc_video_queue queue;
	void (*decode) (struct urb *urb, struct uvc_streaming *video,
			struct uvc_buffer *buf);

	/* Context data used by the bulk completion handler. */
	struct {
		__u8 header[256];
		unsigned int header_size;
		int skip_payload;
		__u32 payload_size;
		__u32 max_payload_size;
	} bulk;

	struct urb *urb[UVC_URBS];
	char *urb_buffer[UVC_URBS];
	dma_addr_t urb_dma[UVC_URBS];
	unsigned int urb_size;

	__u32 sequence;
	__u8 last_fid;
};

enum uvc_device_state {
	UVC_DEV_DISCONNECTED = 1,
};

struct uvc_device {
	struct usb_device *udev;
	struct usb_interface *intf;
	unsigned long warnings;
	__u32 quirks;
	int intfnum;
	char name[32];

	enum uvc_device_state state;
	atomic_t users;
	atomic_t nmappings;

	/* Video control interface */
#ifdef CONFIG_MEDIA_CONTROLLER
	struct media_device mdev;
#endif
	struct v4l2_device vdev;
	__u16 uvc_version;
	__u32 clock_frequency;

	struct list_head entities;
	struct list_head chains;

	/* Video Streaming interfaces */
	struct list_head streams;
	atomic_t nstreams;

	/* Status Interrupt Endpoint */
	struct usb_host_endpoint *int_ep;
	struct urb *int_urb;
	__u8 *status;
	struct input_dev *input;
	char input_phys[64];
};

enum uvc_handle_state {
	UVC_HANDLE_PASSIVE	= 0,
	UVC_HANDLE_ACTIVE	= 1,
};

struct uvc_fh {
	struct uvc_video_chain *chain;
	struct uvc_streaming *stream;
	enum uvc_handle_state state;
};

struct uvc_driver {
	struct usb_driver driver;
};

/* ------------------------------------------------------------------------
 * Debugging, printing and logging
 */

#define UVC_TRACE_PROBE		(1 << 0)
#define UVC_TRACE_DESCR		(1 << 1)
#define UVC_TRACE_CONTROL	(1 << 2)
#define UVC_TRACE_FORMAT	(1 << 3)
#define UVC_TRACE_CAPTURE	(1 << 4)
#define UVC_TRACE_CALLS		(1 << 5)
#define UVC_TRACE_IOCTL		(1 << 6)
#define UVC_TRACE_FRAME		(1 << 7)
#define UVC_TRACE_SUSPEND	(1 << 8)
#define UVC_TRACE_STATUS	(1 << 9)
#define UVC_TRACE_VIDEO		(1 << 10)

#define UVC_WARN_MINMAX		0
#define UVC_WARN_PROBE_DEF	1
#define UVC_WARN_XU_GET_RES	2

extern unsigned int uvc_clock_param;
extern unsigned int uvc_no_drop_param;
extern unsigned int uvc_trace_param;
extern unsigned int uvc_timeout_param;

#define uvc_trace(flag, msg...) \
	do { \
		if (uvc_trace_param & flag) \
			printk(KERN_DEBUG "uvcvideo: " msg); \
	} while (0)

#define uvc_warn_once(dev, warn, msg...) \
	do { \
		if (!test_and_set_bit(warn, &dev->warnings)) \
			printk(KERN_INFO "uvcvideo: " msg); \
	} while (0)

#define uvc_printk(level, msg...) \
	printk(level "uvcvideo: " msg)

/* --------------------------------------------------------------------------
 * Internal functions.
 */

/* Core driver */
extern struct uvc_driver uvc_driver;

extern struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id);

/* Video buffers queue management. */
extern void uvc_queue_init(struct uvc_video_queue *queue,
		enum v4l2_buf_type type, int drop_corrupted);
extern int uvc_alloc_buffers(struct uvc_video_queue *queue,
		struct v4l2_requestbuffers *rb);
extern void uvc_free_buffers(struct uvc_video_queue *queue);
extern int uvc_query_buffer(struct uvc_video_queue *queue,
		struct v4l2_buffer *v4l2_buf);
extern int uvc_queue_buffer(struct uvc_video_queue *queue,
		struct v4l2_buffer *v4l2_buf);
extern int uvc_dequeue_buffer(struct uvc_video_queue *queue,
		struct v4l2_buffer *v4l2_buf, int nonblocking);
extern int uvc_queue_enable(struct uvc_video_queue *queue, int enable);
extern void uvc_queue_cancel(struct uvc_video_queue *queue, int disconnect);
extern struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue,
		struct uvc_buffer *buf);
extern int uvc_queue_mmap(struct uvc_video_queue *queue,
		struct vm_area_struct *vma);
extern unsigned int uvc_queue_poll(struct uvc_video_queue *queue,
		struct file *file, poll_table *wait);
#ifndef CONFIG_MMU
extern unsigned long uvc_queue_get_unmapped_area(struct uvc_video_queue *queue,
		unsigned long pgoff);
#endif
extern int uvc_queue_allocated(struct uvc_video_queue *queue);
static inline int uvc_queue_streaming(struct uvc_video_queue *queue)
{
	return vb2_is_streaming(&queue->queue);
}

/* V4L2 interface */
extern const struct v4l2_file_operations uvc_fops;

/* Media controller */
extern int uvc_mc_register_entities(struct uvc_video_chain *chain);
extern void uvc_mc_cleanup_entity(struct uvc_entity *entity);

/* Video */
extern int uvc_video_init(struct uvc_streaming *stream);
extern int uvc_video_suspend(struct uvc_streaming *stream);
extern int uvc_video_resume(struct uvc_streaming *stream, int reset);
extern int uvc_video_enable(struct uvc_streaming *stream, int enable);
extern int uvc_probe_video(struct uvc_streaming *stream,
		struct uvc_streaming_control *probe);
extern int uvc_query_ctrl(struct uvc_device *dev, __u8 query, __u8 unit,
		__u8 intfnum, __u8 cs, void *data, __u16 size);

/* Status */
extern int uvc_status_init(struct uvc_device *dev);
extern void uvc_status_cleanup(struct uvc_device *dev);
extern int uvc_status_start(struct uvc_device *dev);
extern void uvc_status_stop(struct uvc_device *dev);
extern int uvc_status_suspend(struct uvc_device *dev);
extern int uvc_status_resume(struct uvc_device *dev);

/* Controls */
extern int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
		struct v4l2_queryctrl *v4l2_ctrl);
extern int uvc_query_v4l2_menu(struct uvc_video_chain *chain,
		struct v4l2_querymenu *query_menu);

extern int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
		const struct uvc_control_mapping *mapping);
extern int uvc_ctrl_init_device(struct uvc_device *dev);
extern void uvc_ctrl_cleanup_device(struct uvc_device *dev);
extern int uvc_ctrl_resume_device(struct uvc_device *dev);

extern int uvc_ctrl_begin(struct uvc_video_chain *chain);
extern int __uvc_ctrl_commit(struct uvc_video_chain *chain, int rollback);
static inline int uvc_ctrl_commit(struct uvc_video_chain *chain)
{
	return __uvc_ctrl_commit(chain, 0);
}
static inline int uvc_ctrl_rollback(struct uvc_video_chain *chain)
{
	return __uvc_ctrl_commit(chain, 1);
}

extern int uvc_ctrl_get(struct uvc_video_chain *chain,
		struct v4l2_ext_control *xctrl);
extern int uvc_ctrl_set(struct uvc_video_chain *chain,
		struct v4l2_ext_control *xctrl);

extern int uvc_xu_ctrl_query(struct uvc_video_chain *chain,
		struct uvc_xu_control_query *xqry);

/* Utility functions */
extern void uvc_simplify_fraction(uint32_t *numerator, uint32_t *denominator,
		unsigned int n_terms, unsigned int threshold);
extern uint32_t uvc_fraction_to_interval(uint32_t numerator,
		uint32_t denominator);
extern struct usb_host_endpoint *uvc_find_endpoint(
		struct usb_host_interface *alts, __u8 epaddr);

/* Quirks support */
void uvc_video_decode_isight(struct urb *urb, struct uvc_streaming *stream,
		struct uvc_buffer *buf);

#endif
Commit	Line	Data
c0efd232 LP	1	#ifndef _USB_VIDEO_H_
	2	#define _USB_VIDEO_H_
	3
5f708812	4	#ifndef __KERNEL__
227bd5b3 LP	5	#error "The uvcvideo.h header is deprecated, use linux/uvcvideo.h instead."
227bd5b3 LP	6	#endif /* __KERNEL__ */
c0efd232	7
227bd5b3	8	#include <linux/kernel.h>
c0efd232	9	#include <linux/poll.h>
4ffc2d89	10	#include <linux/usb.h>
de05f634	11	#include <linux/usb/video.h>
5f708812	12	#include <linux/uvcvideo.h>
227bd5b3	13	#include <linux/videodev2.h>
5a254d75 LP	14	#include <media/media-device.h>
5a254d75 LP	15	#include <media/v4l2-device.h>
6998b6fb	16	#include <media/videobuf2-core.h>
c0efd232 LP	17
	18	/* --------------------------------------------------------------------------
	19	* UVC constants
	20	*/
	21
c0efd232 LP	22	#define UVC_TERM_INPUT 0x0000
c0efd232 LP	23	#define UVC_TERM_OUTPUT 0x8000
6241d8ca	24	#define UVC_TERM_DIRECTION(term) ((term)->type & 0x8000)
c0efd232 LP	25
	26	#define UVC_ENTITY_TYPE(entity) ((entity)->type & 0x7fff)
	27	#define UVC_ENTITY_IS_UNIT(entity) (((entity)->type & 0xff00) == 0)
	28	#define UVC_ENTITY_IS_TERM(entity) (((entity)->type & 0xff00) != 0)
	29	#define UVC_ENTITY_IS_ITERM(entity) \
8e113595 LP	30	(UVC_ENTITY_IS_TERM(entity) && \
8e113595 LP	31	((entity)->type & 0x8000) == UVC_TERM_INPUT)
c0efd232	32	#define UVC_ENTITY_IS_OTERM(entity) \
8e113595 LP	33	(UVC_ENTITY_IS_TERM(entity) && \
8e113595 LP	34	((entity)->type & 0x8000) == UVC_TERM_OUTPUT)
c0efd232	35
c0efd232 LP	36
	37	/* ------------------------------------------------------------------------
	38	* GUIDs
	39	*/
	40	#define UVC_GUID_UVC_CAMERA \
	41	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
	42	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}
	43	#define UVC_GUID_UVC_OUTPUT \
	44	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
	45	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02}
	46	#define UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT \
	47	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
	48	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03}
	49	#define UVC_GUID_UVC_PROCESSING \
	50	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
	51	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01}
	52	#define UVC_GUID_UVC_SELECTOR \
	53	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
	54	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02}
	55
c0efd232 LP	56	#define UVC_GUID_FORMAT_MJPEG \
	57	{ 'M', 'J', 'P', 'G', 0x00, 0x00, 0x10, 0x00, \
	58	0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
	59	#define UVC_GUID_FORMAT_YUY2 \
	60	{ 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, \
	61	0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
68f194e0 DR	62	#define UVC_GUID_FORMAT_YUY2_ISIGHT \
	63	{ 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, \
	64	0x80, 0x00, 0x00, 0x00, 0x00, 0x38, 0x9b, 0x71}
c0efd232 LP	65	#define UVC_GUID_FORMAT_NV12 \
	66	{ 'N', 'V', '1', '2', 0x00, 0x00, 0x10, 0x00, \
	67	0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
	68	#define UVC_GUID_FORMAT_YV12 \
	69	{ 'Y', 'V', '1', '2', 0x00, 0x00, 0x10, 0x00, \
	70	0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
	71	#define UVC_GUID_FORMAT_I420 \
	72	{ 'I', '4', '2', '0', 0x00, 0x00, 0x10, 0x00, \
	73	0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
	74	#define UVC_GUID_FORMAT_UYVY \
	75	{ 'U', 'Y', 'V', 'Y', 0x00, 0x00, 0x10, 0x00, \
	76	0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
	77	#define UVC_GUID_FORMAT_Y800 \
	78	{ 'Y', '8', '0', '0', 0x00, 0x00, 0x10, 0x00, \
	79	0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
61421206 LP	80	#define UVC_GUID_FORMAT_Y16 \
	81	{ 'Y', '1', '6', ' ', 0x00, 0x00, 0x10, 0x00, \
	82	0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
c0efd232 LP	83	#define UVC_GUID_FORMAT_BY8 \
	84	{ 'B', 'Y', '8', ' ', 0x00, 0x00, 0x10, 0x00, \
	85	0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
50791079 LP	86	#define UVC_GUID_FORMAT_RGBP \
	87	{ 'R', 'G', 'B', 'P', 0x00, 0x00, 0x10, 0x00, \
	88	0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
7225a1dc HG	89	#define UVC_GUID_FORMAT_M420 \
	90	{ 'M', '4', '2', '0', 0x00, 0x00, 0x10, 0x00, \
	91	0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
c0efd232	92
25ad8a8d SL	93	#define UVC_GUID_FORMAT_H264 \
	94	{ 'H', '2', '6', '4', 0x00, 0x00, 0x10, 0x00, \
	95	0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
	96
c0efd232 LP	97	/* ------------------------------------------------------------------------
	98	* Driver specific constants.
	99	*/
	100
fd3e5824	101	#define DRIVER_VERSION "1.1.1"
c0efd232 LP	102
	103	/* Number of isochronous URBs. */
	104	#define UVC_URBS 5
efdc8a95 LP	105	/* Maximum number of packets per URB. */
efdc8a95 LP	106	#define UVC_MAX_PACKETS 32
c0efd232 LP	107	/* Maximum number of video buffers. */
c0efd232 LP	108	#define UVC_MAX_VIDEO_BUFFERS 32
a31a4055 ML	109	/* Maximum status buffer size in bytes of interrupt URB. */
a31a4055 ML	110	#define UVC_MAX_STATUS_SIZE 16
c0efd232 LP	111
c0efd232 LP	112	#define UVC_CTRL_CONTROL_TIMEOUT 300
56d15cd3	113	#define UVC_CTRL_STREAMING_TIMEOUT 5000
c0efd232	114
8fb91b33 MR	115	/* Maximum allowed number of control mappings per device */
	116	#define UVC_MAX_CONTROL_MAPPINGS 1024
	117
c0efd232 LP	118	/* Devices quirks */
	119	#define UVC_QUIRK_STATUS_INTERVAL 0x00000001
	120	#define UVC_QUIRK_PROBE_MINMAX 0x00000002
	121	#define UVC_QUIRK_PROBE_EXTRAFIELDS 0x00000004
	122	#define UVC_QUIRK_BUILTIN_ISIGHT 0x00000008
	123	#define UVC_QUIRK_STREAM_NO_FID 0x00000010
	124	#define UVC_QUIRK_IGNORE_SELECTOR_UNIT 0x00000020
50144aee	125	#define UVC_QUIRK_FIX_BANDWIDTH 0x00000080
bab6f66c	126	#define UVC_QUIRK_PROBE_DEF 0x00000100
86d8b6ab	127	#define UVC_QUIRK_RESTRICT_FRAME_RATE 0x00000200
c0efd232 LP	128
	129	/* Format flags */
	130	#define UVC_FMT_FLAG_COMPRESSED 0x00000001
	131	#define UVC_FMT_FLAG_STREAM 0x00000002
	132
	133	/* ------------------------------------------------------------------------
	134	* Structures.
	135	*/
	136
	137	struct uvc_device;
	138
	139	/* TODO: Put the most frequently accessed fields at the beginning of
	140	* structures to maximize cache efficiency.
	141	*/
c0efd232	142	struct uvc_control_info {
c0efd232 LP	143	struct list_head mappings;
	144
	145	__u8 entity[16];
ba2fa996	146	__u8 index; /* Bit index in bmControls */
c0efd232 LP	147	__u8 selector;
	148
	149	__u16 size;
	150	__u32 flags;
	151	};
	152
	153	struct uvc_control_mapping {
	154	struct list_head list;
	155
	156	struct uvc_control_info *ctrl;
	157
	158	__u32 id;
	159	__u8 name[32];
	160	__u8 entity[16];
	161	__u8 selector;
	162
	163	__u8 size;
	164	__u8 offset;
	165	enum v4l2_ctrl_type v4l2_type;
	166	__u32 data_type;
	167
	168	struct uvc_menu_info *menu_info;
	169	__u32 menu_count;
9768352a LP	170
	171	__s32 (get) (struct uvc_control_mapping mapping, __u8 query,
	172	const __u8 *data);
	173	void (set) (struct uvc_control_mapping mapping, __s32 value,
	174	__u8 *data);
c0efd232 LP	175	};
	176
	177	struct uvc_control {
	178	struct uvc_entity *entity;
071c8bb8	179	struct uvc_control_info info;
c0efd232 LP	180
	181	__u8 index; /* Used to match the uvc_control entry with a
	182	uvc_control_info. */
071c8bb8 LP	183	__u8 dirty:1,
	184	loaded:1,
	185	modified:1,
	186	cached:1,
	187	initialized:1;
c0efd232	188
b30ece53	189	__u8 *uvc_data;
c0efd232 LP	190	};
	191
	192	struct uvc_format_desc {
	193	char *name;
	194	__u8 guid[16];
	195	__u32 fcc;
	196	};
	197
	198	/* The term 'entity' refers to both UVC units and UVC terminals.
	199	*
	200	* The type field is either the terminal type (wTerminalType in the terminal
	201	* descriptor), or the unit type (bDescriptorSubtype in the unit descriptor).
	202	* As the bDescriptorSubtype field is one byte long, the type value will
	203	* always have a null MSB for units. All terminal types defined by the UVC
	204	* specification have a non-null MSB, so it is safe to use the MSB to
	205	* differentiate between units and terminals as long as the descriptor parsing
	206	* code makes sure terminal types have a non-null MSB.
	207	*
	208	* For terminals, the type's most significant bit stores the terminal
	209	* direction (either UVC_TERM_INPUT or UVC_TERM_OUTPUT). The type field should
	210	* always be accessed with the UVC_ENTITY_* macros and never directly.
	211	*/
	212
	213	struct uvc_entity {
	214	struct list_head list; /* Entity as part of a UVC device. */
	215	struct list_head chain; /* Entity as part of a video device
	216	* chain. */
	217	__u8 id;
	218	__u16 type;
	219	char name[64];
	220
4ffc2d89	221	/* Media controller-related fields. */
8a65a948	222	struct video_device *vdev;
4ffc2d89 LP	223	struct v4l2_subdev subdev;
	224	unsigned int num_pads;
	225	unsigned int num_links;
	226	struct media_pad *pads;
	227
c0efd232 LP	228	union {
	229	struct {
	230	__u16 wObjectiveFocalLengthMin;
	231	__u16 wObjectiveFocalLengthMax;
	232	__u16 wOcularFocalLength;
	233	__u8 bControlSize;
	234	__u8 *bmControls;
	235	} camera;
	236
	237	struct {
	238	__u8 bControlSize;
	239	__u8 *bmControls;
	240	__u8 bTransportModeSize;
	241	__u8 *bmTransportModes;
	242	} media;
	243
	244	struct {
c0efd232 LP	245	} output;
	246
	247	struct {
c0efd232 LP	248	__u16 wMaxMultiplier;
	249	__u8 bControlSize;
	250	__u8 *bmControls;
	251	__u8 bmVideoStandards;
	252	} processing;
	253
	254	struct {
c0efd232 LP	255	} selector;
	256
	257	struct {
	258	__u8 guidExtensionCode[16];
	259	__u8 bNumControls;
c0efd232 LP	260	__u8 bControlSize;
	261	__u8 *bmControls;
	262	__u8 *bmControlsType;
	263	} extension;
	264	};
	265
8ca5a639 LP	266	__u8 bNrInPins;
	267	__u8 *baSourceID;
	268
c0efd232 LP	269	unsigned int ncontrols;
	270	struct uvc_control *controls;
	271	};
	272
	273	struct uvc_frame {
	274	__u8 bFrameIndex;
	275	__u8 bmCapabilities;
	276	__u16 wWidth;
	277	__u16 wHeight;
	278	__u32 dwMinBitRate;
	279	__u32 dwMaxBitRate;
	280	__u32 dwMaxVideoFrameBufferSize;
	281	__u8 bFrameIntervalType;
	282	__u32 dwDefaultFrameInterval;
	283	__u32 *dwFrameInterval;
	284	};
	285
	286	struct uvc_format {
	287	__u8 type;
	288	__u8 index;
	289	__u8 bpp;
	290	__u8 colorspace;
	291	__u32 fcc;
	292	__u32 flags;
	293
	294	char name[32];
	295
	296	unsigned int nframes;
	297	struct uvc_frame *frame;
	298	};
	299
	300	struct uvc_streaming_header {
	301	__u8 bNumFormats;
	302	__u8 bEndpointAddress;
	303	__u8 bTerminalLink;
	304	__u8 bControlSize;
	305	__u8 *bmaControls;
	306	/* The following fields are used by input headers only. */
	307	__u8 bmInfo;
	308	__u8 bStillCaptureMethod;
	309	__u8 bTriggerSupport;
	310	__u8 bTriggerUsage;
	311	};
	312
c0efd232	313	enum uvc_buffer_state {
2c2d264b LP	314	UVC_BUF_STATE_IDLE = 0,
	315	UVC_BUF_STATE_QUEUED = 1,
	316	UVC_BUF_STATE_ACTIVE = 2,
d7c0d439 LP	317	UVC_BUF_STATE_READY = 3,
	318	UVC_BUF_STATE_DONE = 4,
	319	UVC_BUF_STATE_ERROR = 5,
c0efd232 LP	320	};
	321
	322	struct uvc_buffer {
6998b6fb	323	struct vb2_buffer buf;
c0efd232	324	struct list_head queue;
6998b6fb	325
c0efd232	326	enum uvc_buffer_state state;
9bde9f26	327	unsigned int error;
3d95e932 LP	328
	329	void *mem;
	330	unsigned int length;
	331	unsigned int bytesused;
c0efd232 LP	332	};
c0efd232 LP	333
6998b6fb LP	334	#define UVC_QUEUE_DISCONNECTED (1 << 0)
6998b6fb LP	335	#define UVC_QUEUE_DROP_CORRUPTED (1 << 1)
c0efd232 LP	336
c0efd232 LP	337	struct uvc_video_queue {
6998b6fb LP	338	struct vb2_queue queue;
6998b6fb LP	339	struct mutex mutex; /* Protects queue */
ff924203	340
c0efd232	341	unsigned int flags;
ff924203	342	unsigned int buf_used;
c0efd232	343
6998b6fb	344	spinlock_t irqlock; /* Protects irqqueue */
c0efd232 LP	345	struct list_head irqqueue;
	346	};
	347
8e113595 LP	348	struct uvc_video_chain {
	349	struct uvc_device *dev;
	350	struct list_head list;
	351
6241d8ca	352	struct list_head entities; /* All entities */
8e113595 LP	353	struct uvc_entity processing; / Processing unit */
8e113595 LP	354	struct uvc_entity selector; / Selector unit */
8e113595	355
27a61c13	356	struct mutex ctrl_mutex; /* Protects ctrl.info */
8e113595 LP	357	};
8e113595 LP	358
35f02a68 LP	359	struct uvc_streaming {
35f02a68 LP	360	struct list_head list;
c0efd232 LP	361	struct uvc_device *dev;
c0efd232 LP	362	struct video_device *vdev;
8e113595	363	struct uvc_video_chain *chain;
c0efd232	364	atomic_t active;
c0efd232	365
35f02a68 LP	366	struct usb_interface *intf;
	367	int intfnum;
	368	__u16 maxpsize;
c0efd232	369
35f02a68 LP	370	struct uvc_streaming_header header;
	371	enum v4l2_buf_type type;
	372
	373	unsigned int nformats;
	374	struct uvc_format *format;
c0efd232	375
35f02a68 LP	376	struct uvc_streaming_control ctrl;
	377	struct uvc_format *cur_format;
	378	struct uvc_frame *cur_frame;
6947756d LP	379	/* Protect access to ctrl, cur_format, cur_frame and hardware video
	380	* probe control.
	381	*/
35f02a68	382	struct mutex mutex;
c0efd232	383
6998b6fb	384	/* Buffers queue. */
35f02a68 LP	385	unsigned int frozen : 1;
	386	struct uvc_video_queue queue;
	387	void (decode) (struct urb urb, struct uvc_streaming *video,
c0efd232 LP	388	struct uvc_buffer *buf);
	389
	390	/* Context data used by the bulk completion handler. */
	391	struct {
	392	__u8 header[256];
	393	unsigned int header_size;
	394	int skip_payload;
	395	__u32 payload_size;
	396	__u32 max_payload_size;
	397	} bulk;
	398
	399	struct urb *urb[UVC_URBS];
	400	char *urb_buffer[UVC_URBS];
e01117c8 LP	401	dma_addr_t urb_dma[UVC_URBS];
e01117c8 LP	402	unsigned int urb_size;
c0efd232	403
650b95fe	404	__u32 sequence;
c0efd232 LP	405	__u8 last_fid;
	406	};
	407
	408	enum uvc_device_state {
	409	UVC_DEV_DISCONNECTED = 1,
	410	};
	411
	412	struct uvc_device {
	413	struct usb_device *udev;
	414	struct usb_interface *intf;
44f0079e	415	unsigned long warnings;
c0efd232 LP	416	__u32 quirks;
	417	int intfnum;
	418	char name[32];
	419
	420	enum uvc_device_state state;
04a37e0f	421	atomic_t users;
8fb91b33	422	atomic_t nmappings;
c0efd232 LP	423
c0efd232 LP	424	/* Video control interface */
5a254d75 LP	425	#ifdef CONFIG_MEDIA_CONTROLLER
	426	struct media_device mdev;
	427	#endif
	428	struct v4l2_device vdev;
c0efd232 LP	429	__u16 uvc_version;
	430	__u32 clock_frequency;
	431
	432	struct list_head entities;
8e113595	433	struct list_head chains;
c0efd232	434
35f02a68 LP	435	/* Video Streaming interfaces */
35f02a68 LP	436	struct list_head streams;
716fdee1	437	atomic_t nstreams;
35f02a68	438
c0efd232 LP	439	/* Status Interrupt Endpoint */
	440	struct usb_host_endpoint *int_ep;
	441	struct urb *int_urb;
a31a4055	442	__u8 *status;
c0efd232	443	struct input_dev *input;
f1801523	444	char input_phys[64];
c0efd232 LP	445	};
	446
	447	enum uvc_handle_state {
	448	UVC_HANDLE_PASSIVE = 0,
	449	UVC_HANDLE_ACTIVE = 1,
	450	};
	451
	452	struct uvc_fh {
8e113595	453	struct uvc_video_chain *chain;
35f02a68	454	struct uvc_streaming *stream;
c0efd232 LP	455	enum uvc_handle_state state;
	456	};
	457
	458	struct uvc_driver {
	459	struct usb_driver driver;
c0efd232 LP	460	};
	461
	462	/* ------------------------------------------------------------------------
	463	* Debugging, printing and logging
	464	*/
	465
	466	#define UVC_TRACE_PROBE (1 << 0)
	467	#define UVC_TRACE_DESCR (1 << 1)
	468	#define UVC_TRACE_CONTROL (1 << 2)
	469	#define UVC_TRACE_FORMAT (1 << 3)
	470	#define UVC_TRACE_CAPTURE (1 << 4)
	471	#define UVC_TRACE_CALLS (1 << 5)
	472	#define UVC_TRACE_IOCTL (1 << 6)
	473	#define UVC_TRACE_FRAME (1 << 7)
	474	#define UVC_TRACE_SUSPEND (1 << 8)
	475	#define UVC_TRACE_STATUS (1 << 9)
663a4192	476	#define UVC_TRACE_VIDEO (1 << 10)
c0efd232	477
44f0079e LP	478	#define UVC_WARN_MINMAX 0
44f0079e LP	479	#define UVC_WARN_PROBE_DEF 1
c4d99f89	480	#define UVC_WARN_XU_GET_RES 2
44f0079e	481
310fe524	482	extern unsigned int uvc_clock_param;
0fbd8ee6	483	extern unsigned int uvc_no_drop_param;
c0efd232	484	extern unsigned int uvc_trace_param;
b232a012	485	extern unsigned int uvc_timeout_param;
c0efd232 LP	486
	487	#define uvc_trace(flag, msg...) \
	488	do { \
	489	if (uvc_trace_param & flag) \
	490	printk(KERN_DEBUG "uvcvideo: " msg); \
	491	} while (0)
	492
44f0079e LP	493	#define uvc_warn_once(dev, warn, msg...) \
	494	do { \
	495	if (!test_and_set_bit(warn, &dev->warnings)) \
	496	printk(KERN_INFO "uvcvideo: " msg); \
	497	} while (0)
	498
c0efd232 LP	499	#define uvc_printk(level, msg...) \
	500	printk(level "uvcvideo: " msg)
	501
c0efd232 LP	502	/* --------------------------------------------------------------------------
	503	* Internal functions.
	504	*/
	505
	506	/* Core driver */
	507	extern struct uvc_driver uvc_driver;
c0efd232	508
4ffc2d89 LP	509	extern struct uvc_entity uvc_entity_by_id(struct uvc_device dev, int id);
4ffc2d89 LP	510
c0efd232	511	/* Video buffers queue management. */
ff924203	512	extern void uvc_queue_init(struct uvc_video_queue *queue,
9bde9f26	513	enum v4l2_buf_type type, int drop_corrupted);
c0efd232	514	extern int uvc_alloc_buffers(struct uvc_video_queue *queue,
6998b6fb LP	515	struct v4l2_requestbuffers *rb);
6998b6fb LP	516	extern void uvc_free_buffers(struct uvc_video_queue *queue);
c0efd232 LP	517	extern int uvc_query_buffer(struct uvc_video_queue *queue,
	518	struct v4l2_buffer *v4l2_buf);
	519	extern int uvc_queue_buffer(struct uvc_video_queue *queue,
	520	struct v4l2_buffer *v4l2_buf);
	521	extern int uvc_dequeue_buffer(struct uvc_video_queue *queue,
	522	struct v4l2_buffer *v4l2_buf, int nonblocking);
	523	extern int uvc_queue_enable(struct uvc_video_queue *queue, int enable);
	524	extern void uvc_queue_cancel(struct uvc_video_queue *queue, int disconnect);
	525	extern struct uvc_buffer uvc_queue_next_buffer(struct uvc_video_queue queue,
	526	struct uvc_buffer *buf);
4aa27597 LP	527	extern int uvc_queue_mmap(struct uvc_video_queue *queue,
4aa27597 LP	528	struct vm_area_struct *vma);
c0efd232 LP	529	extern unsigned int uvc_queue_poll(struct uvc_video_queue *queue,
c0efd232 LP	530	struct file file, poll_table wait);
72969447 BL	531	#ifndef CONFIG_MMU
	532	extern unsigned long uvc_queue_get_unmapped_area(struct uvc_video_queue *queue,
	533	unsigned long pgoff);
	534	#endif
23ff6043	535	extern int uvc_queue_allocated(struct uvc_video_queue *queue);
c0efd232 LP	536	static inline int uvc_queue_streaming(struct uvc_video_queue *queue)
c0efd232 LP	537	{
6998b6fb	538	return vb2_is_streaming(&queue->queue);
c0efd232 LP	539	}
	540
	541	/* V4L2 interface */
bec43661	542	extern const struct v4l2_file_operations uvc_fops;
c0efd232	543
4ffc2d89 LP	544	/* Media controller */
	545	extern int uvc_mc_register_entities(struct uvc_video_chain *chain);
	546	extern void uvc_mc_cleanup_entity(struct uvc_entity *entity);
	547
c0efd232	548	/* Video */
35f02a68 LP	549	extern int uvc_video_init(struct uvc_streaming *stream);
35f02a68 LP	550	extern int uvc_video_suspend(struct uvc_streaming *stream);
d59a7b1d	551	extern int uvc_video_resume(struct uvc_streaming *stream, int reset);
35f02a68 LP	552	extern int uvc_video_enable(struct uvc_streaming *stream, int enable);
35f02a68 LP	553	extern int uvc_probe_video(struct uvc_streaming *stream,
c0efd232 LP	554	struct uvc_streaming_control *probe);
	555	extern int uvc_query_ctrl(struct uvc_device *dev, __u8 query, __u8 unit,
	556	__u8 intfnum, __u8 cs, void *data, __u16 size);
c0efd232 LP	557
	558	/* Status */
	559	extern int uvc_status_init(struct uvc_device *dev);
	560	extern void uvc_status_cleanup(struct uvc_device *dev);
04a37e0f LP	561	extern int uvc_status_start(struct uvc_device *dev);
04a37e0f LP	562	extern void uvc_status_stop(struct uvc_device *dev);
c0efd232 LP	563	extern int uvc_status_suspend(struct uvc_device *dev);
	564	extern int uvc_status_resume(struct uvc_device *dev);
	565
	566	/* Controls */
8e113595	567	extern int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
c0efd232	568	struct v4l2_queryctrl *v4l2_ctrl);
23d9f3ef LP	569	extern int uvc_query_v4l2_menu(struct uvc_video_chain *chain,
23d9f3ef LP	570	struct v4l2_querymenu *query_menu);
c0efd232	571
ba2fa996 LP	572	extern int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
ba2fa996 LP	573	const struct uvc_control_mapping *mapping);
c0efd232 LP	574	extern int uvc_ctrl_init_device(struct uvc_device *dev);
	575	extern void uvc_ctrl_cleanup_device(struct uvc_device *dev);
	576	extern int uvc_ctrl_resume_device(struct uvc_device *dev);
c0efd232	577
8e113595 LP	578	extern int uvc_ctrl_begin(struct uvc_video_chain *chain);
	579	extern int __uvc_ctrl_commit(struct uvc_video_chain *chain, int rollback);
	580	static inline int uvc_ctrl_commit(struct uvc_video_chain *chain)
c0efd232	581	{
8e113595	582	return __uvc_ctrl_commit(chain, 0);
c0efd232	583	}
8e113595	584	static inline int uvc_ctrl_rollback(struct uvc_video_chain *chain)
c0efd232	585	{
8e113595	586	return __uvc_ctrl_commit(chain, 1);
c0efd232 LP	587	}
c0efd232 LP	588
8e113595	589	extern int uvc_ctrl_get(struct uvc_video_chain *chain,
c0efd232	590	struct v4l2_ext_control *xctrl);
8e113595	591	extern int uvc_ctrl_set(struct uvc_video_chain *chain,
c0efd232 LP	592	struct v4l2_ext_control *xctrl);
c0efd232 LP	593
8e113595	594	extern int uvc_xu_ctrl_query(struct uvc_video_chain *chain,
fe78d187	595	struct uvc_xu_control_query *xqry);
c0efd232 LP	596
	597	/* Utility functions */
	598	extern void uvc_simplify_fraction(uint32_t numerator, uint32_t denominator,
	599	unsigned int n_terms, unsigned int threshold);
	600	extern uint32_t uvc_fraction_to_interval(uint32_t numerator,
	601	uint32_t denominator);
	602	extern struct usb_host_endpoint *uvc_find_endpoint(
	603	struct usb_host_interface *alts, __u8 epaddr);
	604
	605	/* Quirks support */
35f02a68	606	void uvc_video_decode_isight(struct urb urb, struct uvc_streaming stream,
c0efd232 LP	607	struct uvc_buffer *buf);
c0efd232 LP	608
c0efd232	609	#endif