Merge branch 'linus' into x86/irq

1 files changed, 796 insertions, 0 deletions

diff --git a/drivers/media/video/uvc/uvcvideo.h b/drivers/media/video/uvc/uvcvideo.h
new file mode 100644
index 00000000000..a995a780db1
--- /dev/null
+++ b/drivers/media/video/uvc/uvcvideo.h
@@ -0,0 +1,796 @@
+#ifndef _USB_VIDEO_H_
+#define _USB_VIDEO_H_
+
+#include <linux/kernel.h>
+#include <linux/videodev2.h>
+
+
+/*
+ * Dynamic controls
+ */
+
+/* Data types for UVC control data */
+#define UVC_CTRL_DATA_TYPE_RAW		0
+#define UVC_CTRL_DATA_TYPE_SIGNED	1
+#define UVC_CTRL_DATA_TYPE_UNSIGNED	2
+#define UVC_CTRL_DATA_TYPE_BOOLEAN	3
+#define UVC_CTRL_DATA_TYPE_ENUM		4
+#define UVC_CTRL_DATA_TYPE_BITMASK	5
+
+/* Control flags */
+#define UVC_CONTROL_SET_CUR	(1 << 0)
+#define UVC_CONTROL_GET_CUR	(1 << 1)
+#define UVC_CONTROL_GET_MIN	(1 << 2)
+#define UVC_CONTROL_GET_MAX	(1 << 3)
+#define UVC_CONTROL_GET_RES	(1 << 4)
+#define UVC_CONTROL_GET_DEF	(1 << 5)
+/* Control should be saved at suspend and restored at resume. */
+#define UVC_CONTROL_RESTORE	(1 << 6)
+/* Control can be updated by the camera. */
+#define UVC_CONTROL_AUTO_UPDATE	(1 << 7)
+
+#define UVC_CONTROL_GET_RANGE	(UVC_CONTROL_GET_CUR | UVC_CONTROL_GET_MIN | \
+				 UVC_CONTROL_GET_MAX | UVC_CONTROL_GET_RES | \
+				 UVC_CONTROL_GET_DEF)
+
+struct uvc_xu_control_info {
+	__u8 entity[16];
+	__u8 index;
+	__u8 selector;
+	__u16 size;
+	__u32 flags;
+};
+
+struct uvc_xu_control_mapping {
+	__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_xu_control {
+	__u8 unit;
+	__u8 selector;
+	__u16 size;
+	__u8 __user *data;
+};
+
+#define UVCIOC_CTRL_ADD		_IOW('U', 1, struct uvc_xu_control_info)
+#define UVCIOC_CTRL_MAP		_IOWR('U', 2, struct uvc_xu_control_mapping)
+#define UVCIOC_CTRL_GET		_IOWR('U', 3, struct uvc_xu_control)
+#define UVCIOC_CTRL_SET		_IOW('U', 4, struct uvc_xu_control)
+
+#ifdef __KERNEL__
+
+#include <linux/poll.h>
+
+/* --------------------------------------------------------------------------
+ * UVC constants
+ */
+
+#define SC_UNDEFINED                    0x00
+#define SC_VIDEOCONTROL                 0x01
+#define SC_VIDEOSTREAMING               0x02
+#define SC_VIDEO_INTERFACE_COLLECTION   0x03
+
+#define PC_PROTOCOL_UNDEFINED           0x00
+
+#define CS_UNDEFINED                    0x20
+#define CS_DEVICE                       0x21
+#define CS_CONFIGURATION                0x22
+#define CS_STRING                       0x23
+#define CS_INTERFACE                    0x24
+#define CS_ENDPOINT                     0x25
+
+/* VideoControl class specific interface descriptor */
+#define VC_DESCRIPTOR_UNDEFINED         0x00
+#define VC_HEADER                       0x01
+#define VC_INPUT_TERMINAL               0x02
+#define VC_OUTPUT_TERMINAL              0x03
+#define VC_SELECTOR_UNIT                0x04
+#define VC_PROCESSING_UNIT              0x05
+#define VC_EXTENSION_UNIT               0x06
+
+/* VideoStreaming class specific interface descriptor */
+#define VS_UNDEFINED                    0x00
+#define VS_INPUT_HEADER                 0x01
+#define VS_OUTPUT_HEADER                0x02
+#define VS_STILL_IMAGE_FRAME            0x03
+#define VS_FORMAT_UNCOMPRESSED          0x04
+#define VS_FRAME_UNCOMPRESSED           0x05
+#define VS_FORMAT_MJPEG                 0x06
+#define VS_FRAME_MJPEG                  0x07
+#define VS_FORMAT_MPEG2TS               0x0a
+#define VS_FORMAT_DV                    0x0c
+#define VS_COLORFORMAT                  0x0d
+#define VS_FORMAT_FRAME_BASED           0x10
+#define VS_FRAME_FRAME_BASED            0x11
+#define VS_FORMAT_STREAM_BASED          0x12
+
+/* Endpoint type */
+#define EP_UNDEFINED                    0x00
+#define EP_GENERAL                      0x01
+#define EP_ENDPOINT                     0x02
+#define EP_INTERRUPT                    0x03
+
+/* Request codes */
+#define RC_UNDEFINED                    0x00
+#define SET_CUR                         0x01
+#define GET_CUR                         0x81
+#define GET_MIN                         0x82
+#define GET_MAX                         0x83
+#define GET_RES                         0x84
+#define GET_LEN                         0x85
+#define GET_INFO                        0x86
+#define GET_DEF                         0x87
+
+/* VideoControl interface controls */
+#define VC_CONTROL_UNDEFINED            0x00
+#define VC_VIDEO_POWER_MODE_CONTROL     0x01
+#define VC_REQUEST_ERROR_CODE_CONTROL   0x02
+
+/* Terminal controls */
+#define TE_CONTROL_UNDEFINED            0x00
+
+/* Selector Unit controls */
+#define SU_CONTROL_UNDEFINED            0x00
+#define SU_INPUT_SELECT_CONTROL         0x01
+
+/* Camera Terminal controls */
+#define CT_CONTROL_UNDEFINED            		0x00
+#define CT_SCANNING_MODE_CONTROL        		0x01
+#define CT_AE_MODE_CONTROL              		0x02
+#define CT_AE_PRIORITY_CONTROL          		0x03
+#define CT_EXPOSURE_TIME_ABSOLUTE_CONTROL               0x04
+#define CT_EXPOSURE_TIME_RELATIVE_CONTROL               0x05
+#define CT_FOCUS_ABSOLUTE_CONTROL       		0x06
+#define CT_FOCUS_RELATIVE_CONTROL       		0x07
+#define CT_FOCUS_AUTO_CONTROL           		0x08
+#define CT_IRIS_ABSOLUTE_CONTROL        		0x09
+#define CT_IRIS_RELATIVE_CONTROL        		0x0a
+#define CT_ZOOM_ABSOLUTE_CONTROL        		0x0b
+#define CT_ZOOM_RELATIVE_CONTROL        		0x0c
+#define CT_PANTILT_ABSOLUTE_CONTROL     		0x0d
+#define CT_PANTILT_RELATIVE_CONTROL     		0x0e
+#define CT_ROLL_ABSOLUTE_CONTROL        		0x0f
+#define CT_ROLL_RELATIVE_CONTROL        		0x10
+#define CT_PRIVACY_CONTROL              		0x11
+
+/* Processing Unit controls */
+#define PU_CONTROL_UNDEFINED            		0x00
+#define PU_BACKLIGHT_COMPENSATION_CONTROL               0x01
+#define PU_BRIGHTNESS_CONTROL           		0x02
+#define PU_CONTRAST_CONTROL             		0x03
+#define PU_GAIN_CONTROL                 		0x04
+#define PU_POWER_LINE_FREQUENCY_CONTROL 		0x05
+#define PU_HUE_CONTROL                  		0x06
+#define PU_SATURATION_CONTROL           		0x07
+#define PU_SHARPNESS_CONTROL            		0x08
+#define PU_GAMMA_CONTROL                		0x09
+#define PU_WHITE_BALANCE_TEMPERATURE_CONTROL            0x0a
+#define PU_WHITE_BALANCE_TEMPERATURE_AUTO_CONTROL       0x0b
+#define PU_WHITE_BALANCE_COMPONENT_CONTROL              0x0c
+#define PU_WHITE_BALANCE_COMPONENT_AUTO_CONTROL         0x0d
+#define PU_DIGITAL_MULTIPLIER_CONTROL   		0x0e
+#define PU_DIGITAL_MULTIPLIER_LIMIT_CONTROL             0x0f
+#define PU_HUE_AUTO_CONTROL             		0x10
+#define PU_ANALOG_VIDEO_STANDARD_CONTROL                0x11
+#define PU_ANALOG_LOCK_STATUS_CONTROL   		0x12
+
+#define LXU_MOTOR_PANTILT_RELATIVE_CONTROL		0x01
+#define LXU_MOTOR_PANTILT_RESET_CONTROL			0x02
+#define LXU_MOTOR_FOCUS_MOTOR_CONTROL			0x03
+
+/* VideoStreaming interface controls */
+#define VS_CONTROL_UNDEFINED            0x00
+#define VS_PROBE_CONTROL                0x01
+#define VS_COMMIT_CONTROL               0x02
+#define VS_STILL_PROBE_CONTROL          0x03
+#define VS_STILL_COMMIT_CONTROL         0x04
+#define VS_STILL_IMAGE_TRIGGER_CONTROL  0x05
+#define VS_STREAM_ERROR_CODE_CONTROL    0x06
+#define VS_GENERATE_KEY_FRAME_CONTROL   0x07
+#define VS_UPDATE_FRAME_SEGMENT_CONTROL 0x08
+#define VS_SYNC_DELAY_CONTROL           0x09
+
+#define TT_VENDOR_SPECIFIC              0x0100
+#define TT_STREAMING                    0x0101
+
+/* Input Terminal types */
+#define ITT_VENDOR_SPECIFIC             0x0200
+#define ITT_CAMERA                      0x0201
+#define ITT_MEDIA_TRANSPORT_INPUT       0x0202
+
+/* Output Terminal types */
+#define OTT_VENDOR_SPECIFIC             0x0300
+#define OTT_DISPLAY                     0x0301
+#define OTT_MEDIA_TRANSPORT_OUTPUT      0x0302
+
+/* External Terminal types */
+#define EXTERNAL_VENDOR_SPECIFIC        0x0400
+#define COMPOSITE_CONNECTOR             0x0401
+#define SVIDEO_CONNECTOR                0x0402
+#define COMPONENT_CONNECTOR             0x0403
+
+#define UVC_TERM_INPUT			0x0000
+#define UVC_TERM_OUTPUT			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) \
+	(((entity)->type & 0x8000) == UVC_TERM_INPUT)
+#define UVC_ENTITY_IS_OTERM(entity) \
+	(((entity)->type & 0x8000) == UVC_TERM_OUTPUT)
+
+#define UVC_STATUS_TYPE_CONTROL		1
+#define UVC_STATUS_TYPE_STREAMING	2
+
+/* ------------------------------------------------------------------------
+ * 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_LOGITECH_DEV_INFO \
+	{0x82, 0x06, 0x61, 0x63, 0x70, 0x50, 0xab, 0x49, \
+	 0xb8, 0xcc, 0xb3, 0x85, 0x5e, 0x8d, 0x22, 0x1e}
+#define UVC_GUID_LOGITECH_USER_HW \
+	{0x82, 0x06, 0x61, 0x63, 0x70, 0x50, 0xab, 0x49, \
+	 0xb8, 0xcc, 0xb3, 0x85, 0x5e, 0x8d, 0x22, 0x1f}
+#define UVC_GUID_LOGITECH_VIDEO \
+	{0x82, 0x06, 0x61, 0x63, 0x70, 0x50, 0xab, 0x49, \
+	 0xb8, 0xcc, 0xb3, 0x85, 0x5e, 0x8d, 0x22, 0x50}
+#define UVC_GUID_LOGITECH_MOTOR \
+	{0x82, 0x06, 0x61, 0x63, 0x70, 0x50, 0xab, 0x49, \
+	 0xb8, 0xcc, 0xb3, 0x85, 0x5e, 0x8d, 0x22, 0x56}
+
+#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_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_BY8 \
+	{ 'B',  'Y',  '8',  ' ', 0x00, 0x00, 0x10, 0x00, \
+	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
+
+
+/* ------------------------------------------------------------------------
+ * Driver specific constants.
+ */
+
+#define DRIVER_VERSION_NUMBER	KERNEL_VERSION(0, 1, 0)
+
+/* Number of isochronous URBs. */
+#define UVC_URBS		5
+/* Maximum number of packets per isochronous URB. */
+#define UVC_MAX_ISO_PACKETS	40
+/* Maximum frame size in bytes, for sanity checking. */
+#define UVC_MAX_FRAME_SIZE	(16*1024*1024)
+/* Maximum number of video buffers. */
+#define UVC_MAX_VIDEO_BUFFERS	32
+
+#define UVC_CTRL_CONTROL_TIMEOUT	300
+#define UVC_CTRL_STREAMING_TIMEOUT	1000
+
+/* 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
+
+/* 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_streaming_control {
+	__u16 bmHint;
+	__u8  bFormatIndex;
+	__u8  bFrameIndex;
+	__u32 dwFrameInterval;
+	__u16 wKeyFrameRate;
+	__u16 wPFrameRate;
+	__u16 wCompQuality;
+	__u16 wCompWindowSize;
+	__u16 wDelay;
+	__u32 dwMaxVideoFrameSize;
+	__u32 dwMaxPayloadTransferSize;
+	__u32 dwClockFrequency;
+	__u8  bmFramingInfo;
+	__u8  bPreferedVersion;
+	__u8  bMinVersion;
+	__u8  bMaxVersion;
+};
+
+struct uvc_menu_info {
+	__u32 value;
+	__u8 name[32];
+};
+
+struct uvc_control_info {
+	struct list_head list;
+	struct list_head mappings;
+
+	__u8 entity[16];
+	__u8 index;
+	__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;
+};
+
+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;
+
+	__u8 *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];
+
+	union {
+		struct {
+			__u16 wObjectiveFocalLengthMin;
+			__u16 wObjectiveFocalLengthMax;
+			__u16 wOcularFocalLength;
+			__u8  bControlSize;
+			__u8  *bmControls;
+		} camera;
+
+		struct {
+			__u8  bControlSize;
+			__u8  *bmControls;
+			__u8  bTransportModeSize;
+			__u8  *bmTransportModes;
+		} media;
+
+		struct {
+			__u8  bSourceID;
+		} output;
+
+		struct {
+			__u8  bSourceID;
+			__u16 wMaxMultiplier;
+			__u8  bControlSize;
+			__u8  *bmControls;
+			__u8  bmVideoStandards;
+		} processing;
+
+		struct {
+			__u8  bNrInPins;
+			__u8  *baSourceID;
+		} selector;
+
+		struct {
+			__u8  guidExtensionCode[16];
+			__u8  bNumControls;
+			__u8  bNrInPins;
+			__u8  *baSourceID;
+			__u8  bControlSize;
+			__u8  *bmControls;
+			__u8  *bmControlsType;
+		} extension;
+	};
+
+	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;
+};
+
+struct uvc_streaming {
+	struct list_head list;
+
+	struct usb_interface *intf;
+	int intfnum;
+	__u16 maxpsize;
+
+	struct uvc_streaming_header header;
+
+	unsigned int nformats;
+	struct uvc_format *format;
+
+	struct uvc_streaming_control ctrl;
+	struct uvc_format *cur_format;
+	struct uvc_frame *cur_frame;
+
+	struct mutex mutex;
+};
+
+enum uvc_buffer_state {
+	UVC_BUF_STATE_IDLE       = 0,
+	UVC_BUF_STATE_QUEUED     = 1,
+	UVC_BUF_STATE_ACTIVE     = 2,
+	UVC_BUF_STATE_DONE       = 3,
+	UVC_BUF_STATE_ERROR      = 4,
+};
+
+struct uvc_buffer {
+	unsigned long vma_use_count;
+	struct list_head stream;
+
+	/* Touched by interrupt handler. */
+	struct v4l2_buffer buf;
+	struct list_head queue;
+	wait_queue_head_t wait;
+	enum uvc_buffer_state state;
+};
+
+#define UVC_QUEUE_STREAMING		(1 << 0)
+#define UVC_QUEUE_DISCONNECTED		(1 << 1)
+#define UVC_QUEUE_DROP_INCOMPLETE	(1 << 2)
+
+struct uvc_video_queue {
+	void *mem;
+	unsigned int flags;
+	__u32 sequence;
+
+	unsigned int count;
+	unsigned int buf_size;
+	struct uvc_buffer buffer[UVC_MAX_VIDEO_BUFFERS];
+	struct mutex mutex;	/* protects buffers and mainqueue */
+	spinlock_t irqlock;	/* protects irqqueue */
+
+	struct list_head mainqueue;
+	struct list_head irqqueue;
+};
+
+struct uvc_video_device {
+	struct uvc_device *dev;
+	struct video_device *vdev;
+	atomic_t active;
+	unsigned int frozen : 1;
+
+	struct list_head iterms;
+	struct uvc_entity *oterm;
+	struct uvc_entity *processing;
+	struct uvc_entity *selector;
+	struct list_head extensions;
+	struct mutex ctrl_mutex;
+
+	struct uvc_video_queue queue;
+
+	/* Video streaming object, must always be non-NULL. */
+	struct uvc_streaming *streaming;
+
+	void (*decode) (struct urb *urb, struct uvc_video_device *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];
+
+	__u8 last_fid;
+};
+
+enum uvc_device_state {
+	UVC_DEV_DISCONNECTED = 1,
+};
+
+struct uvc_device {
+	struct usb_device *udev;
+	struct usb_interface *intf;
+	__u32 quirks;
+	int intfnum;
+	char name[32];
+
+	enum uvc_device_state state;
+	struct kref kref;
+	struct list_head list;
+
+	/* Video control interface */
+	__u16 uvc_version;
+	__u32 clock_frequency;
+
+	struct list_head entities;
+
+	struct uvc_video_device video;
+
+	/* Status Interrupt Endpoint */
+	struct usb_host_endpoint *int_ep;
+	struct urb *int_urb;
+	__u8 status[16];
+	struct input_dev *input;
+
+	/* Video Streaming interfaces */
+	struct list_head streaming;
+};
+
+enum uvc_handle_state {
+	UVC_HANDLE_PASSIVE	= 0,
+	UVC_HANDLE_ACTIVE	= 1,
+};
+
+struct uvc_fh {
+	struct uvc_video_device *device;
+	enum uvc_handle_state state;
+};
+
+struct uvc_driver {
+	struct usb_driver driver;
+
+	struct mutex open_mutex;	/* protects from open/disconnect race */
+
+	struct list_head devices;	/* struct uvc_device list */
+	struct list_head controls;	/* struct uvc_control_info list */
+	struct mutex ctrl_mutex;	/* protects controls and devices
+					   lists */
+};
+
+/* ------------------------------------------------------------------------
+ * 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)
+
+extern unsigned int uvc_trace_param;
+
+#define uvc_trace(flag, msg...) \
+	do { \
+		if (uvc_trace_param & flag) \
+			printk(KERN_DEBUG "uvcvideo: " msg); \
+	} while (0)
+
+#define uvc_printk(level, msg...) \
+	printk(level "uvcvideo: " msg)
+
+#define UVC_GUID_FORMAT "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-" \
+			"%02x%02x%02x%02x%02x%02x"
+#define UVC_GUID_ARGS(guid) \
+	(guid)[3],  (guid)[2],  (guid)[1],  (guid)[0], \
+	(guid)[5],  (guid)[4], \
+	(guid)[7],  (guid)[6], \
+	(guid)[8],  (guid)[9], \
+	(guid)[10], (guid)[11], (guid)[12], \
+	(guid)[13], (guid)[14], (guid)[15]
+
+/* --------------------------------------------------------------------------
+ * Internal functions.
+ */
+
+/* Core driver */
+extern struct uvc_driver uvc_driver;
+extern void uvc_delete(struct kref *kref);
+
+/* Video buffers queue management. */
+extern void uvc_queue_init(struct uvc_video_queue *queue);
+extern int uvc_alloc_buffers(struct uvc_video_queue *queue,
+		unsigned int nbuffers, unsigned int buflength);
+extern int 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 unsigned int uvc_queue_poll(struct uvc_video_queue *queue,
+		struct file *file, poll_table *wait);
+static inline int uvc_queue_streaming(struct uvc_video_queue *queue)
+{
+	return queue->flags & UVC_QUEUE_STREAMING;
+}
+
+/* V4L2 interface */
+extern struct file_operations uvc_fops;
+
+/* Video */
+extern int uvc_video_init(struct uvc_video_device *video);
+extern int uvc_video_suspend(struct uvc_video_device *video);
+extern int uvc_video_resume(struct uvc_video_device *video);
+extern int uvc_video_enable(struct uvc_video_device *video, int enable);
+extern int uvc_probe_video(struct uvc_video_device *video,
+		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);
+extern int uvc_set_video_ctrl(struct uvc_video_device *video,
+		struct uvc_streaming_control *ctrl, int probe);
+
+/* Status */
+extern int uvc_status_init(struct uvc_device *dev);
+extern void uvc_status_cleanup(struct uvc_device *dev);
+extern int uvc_status_suspend(struct uvc_device *dev);
+extern int uvc_status_resume(struct uvc_device *dev);
+
+/* Controls */
+extern struct uvc_control *uvc_find_control(struct uvc_video_device *video,
+		__u32 v4l2_id, struct uvc_control_mapping **mapping);
+extern int uvc_query_v4l2_ctrl(struct uvc_video_device *video,
+		struct v4l2_queryctrl *v4l2_ctrl);
+
+extern int uvc_ctrl_add_info(struct uvc_control_info *info);
+extern int uvc_ctrl_add_mapping(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 void uvc_ctrl_init(void);
+
+extern int uvc_ctrl_begin(struct uvc_video_device *video);
+extern int __uvc_ctrl_commit(struct uvc_video_device *video, int rollback);
+static inline int uvc_ctrl_commit(struct uvc_video_device *video)
+{
+	return __uvc_ctrl_commit(video, 0);
+}
+static inline int uvc_ctrl_rollback(struct uvc_video_device *video)
+{
+	return __uvc_ctrl_commit(video, 1);
+}
+
+extern int uvc_ctrl_get(struct uvc_video_device *video,
+		struct v4l2_ext_control *xctrl);
+extern int uvc_ctrl_set(struct uvc_video_device *video,
+		struct v4l2_ext_control *xctrl);
+
+extern int uvc_xu_ctrl_query(struct uvc_video_device *video,
+		struct uvc_xu_control *ctrl, int set);
+
+/* 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_video_device *video,
+		struct uvc_buffer *buf);
+
+#endif /* __KERNEL__ */
+
+#endif