Add linux-next specific files for 20110831
[linux-2.6/next.git] / drivers / media / video / uvc / uvcvideo.h
blobdf32a43ca86a71db60c31bc92751aa0a2308615e
1 #ifndef _USB_VIDEO_H_
2 #define _USB_VIDEO_H_
4 #include <linux/kernel.h>
5 #include <linux/videodev2.h>
7 #ifndef __KERNEL__
8 /*
9 * This header provides binary compatibility with applications using the private
10 * uvcvideo API. This API is deprecated and will be removed in 2.6.42.
11 * Applications should be recompiled against the public linux/uvcvideo.h header.
13 #warn "The uvcvideo.h header is deprecated, use linux/uvcvideo.h instead."
16 * Dynamic controls
19 /* Data types for UVC control data */
20 #define UVC_CTRL_DATA_TYPE_RAW 0
21 #define UVC_CTRL_DATA_TYPE_SIGNED 1
22 #define UVC_CTRL_DATA_TYPE_UNSIGNED 2
23 #define UVC_CTRL_DATA_TYPE_BOOLEAN 3
24 #define UVC_CTRL_DATA_TYPE_ENUM 4
25 #define UVC_CTRL_DATA_TYPE_BITMASK 5
27 /* Control flags */
28 #define UVC_CONTROL_SET_CUR (1 << 0)
29 #define UVC_CONTROL_GET_CUR (1 << 1)
30 #define UVC_CONTROL_GET_MIN (1 << 2)
31 #define UVC_CONTROL_GET_MAX (1 << 3)
32 #define UVC_CONTROL_GET_RES (1 << 4)
33 #define UVC_CONTROL_GET_DEF (1 << 5)
34 #define UVC_CONTROL_RESTORE (1 << 6)
35 #define UVC_CONTROL_AUTO_UPDATE (1 << 7)
37 #define UVC_CONTROL_GET_RANGE (UVC_CONTROL_GET_CUR | UVC_CONTROL_GET_MIN | \
38 UVC_CONTROL_GET_MAX | UVC_CONTROL_GET_RES | \
39 UVC_CONTROL_GET_DEF)
41 struct uvc_menu_info {
42 __u32 value;
43 __u8 name[32];
46 struct uvc_xu_control_mapping {
47 __u32 id;
48 __u8 name[32];
49 __u8 entity[16];
50 __u8 selector;
52 __u8 size;
53 __u8 offset;
54 __u32 v4l2_type;
55 __u32 data_type;
57 struct uvc_menu_info __user *menu_info;
58 __u32 menu_count;
60 __u32 reserved[4];
63 #endif
65 struct uvc_xu_control_info {
66 __u8 entity[16];
67 __u8 index;
68 __u8 selector;
69 __u16 size;
70 __u32 flags;
73 struct uvc_xu_control_mapping_old {
74 __u8 reserved[64];
77 struct uvc_xu_control {
78 __u8 unit;
79 __u8 selector;
80 __u16 size;
81 __u8 __user *data;
84 #ifndef __KERNEL__
85 #define UVCIOC_CTRL_ADD _IOW('U', 1, struct uvc_xu_control_info)
86 #define UVCIOC_CTRL_MAP_OLD _IOWR('U', 2, struct uvc_xu_control_mapping_old)
87 #define UVCIOC_CTRL_MAP _IOWR('U', 2, struct uvc_xu_control_mapping)
88 #define UVCIOC_CTRL_GET _IOWR('U', 3, struct uvc_xu_control)
89 #define UVCIOC_CTRL_SET _IOW('U', 4, struct uvc_xu_control)
90 #else
91 #define __UVCIOC_CTRL_ADD _IOW('U', 1, struct uvc_xu_control_info)
92 #define __UVCIOC_CTRL_MAP_OLD _IOWR('U', 2, struct uvc_xu_control_mapping_old)
93 #define __UVCIOC_CTRL_MAP _IOWR('U', 2, struct uvc_xu_control_mapping)
94 #define __UVCIOC_CTRL_GET _IOWR('U', 3, struct uvc_xu_control)
95 #define __UVCIOC_CTRL_SET _IOW('U', 4, struct uvc_xu_control)
96 #endif
98 #ifdef __KERNEL__
100 #include <linux/poll.h>
101 #include <linux/usb.h>
102 #include <linux/usb/video.h>
103 #include <linux/uvcvideo.h>
104 #include <media/media-device.h>
105 #include <media/v4l2-device.h>
107 /* --------------------------------------------------------------------------
108 * UVC constants
111 #define UVC_TERM_INPUT 0x0000
112 #define UVC_TERM_OUTPUT 0x8000
113 #define UVC_TERM_DIRECTION(term) ((term)->type & 0x8000)
115 #define UVC_ENTITY_TYPE(entity) ((entity)->type & 0x7fff)
116 #define UVC_ENTITY_IS_UNIT(entity) (((entity)->type & 0xff00) == 0)
117 #define UVC_ENTITY_IS_TERM(entity) (((entity)->type & 0xff00) != 0)
118 #define UVC_ENTITY_IS_ITERM(entity) \
119 (UVC_ENTITY_IS_TERM(entity) && \
120 ((entity)->type & 0x8000) == UVC_TERM_INPUT)
121 #define UVC_ENTITY_IS_OTERM(entity) \
122 (UVC_ENTITY_IS_TERM(entity) && \
123 ((entity)->type & 0x8000) == UVC_TERM_OUTPUT)
126 /* ------------------------------------------------------------------------
127 * GUIDs
129 #define UVC_GUID_UVC_CAMERA \
130 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
131 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}
132 #define UVC_GUID_UVC_OUTPUT \
133 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
134 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02}
135 #define UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT \
136 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
137 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03}
138 #define UVC_GUID_UVC_PROCESSING \
139 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
140 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01}
141 #define UVC_GUID_UVC_SELECTOR \
142 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
143 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02}
145 #define UVC_GUID_FORMAT_MJPEG \
146 { 'M', 'J', 'P', 'G', 0x00, 0x00, 0x10, 0x00, \
147 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
148 #define UVC_GUID_FORMAT_YUY2 \
149 { 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, \
150 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
151 #define UVC_GUID_FORMAT_YUY2_ISIGHT \
152 { 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, \
153 0x80, 0x00, 0x00, 0x00, 0x00, 0x38, 0x9b, 0x71}
154 #define UVC_GUID_FORMAT_NV12 \
155 { 'N', 'V', '1', '2', 0x00, 0x00, 0x10, 0x00, \
156 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
157 #define UVC_GUID_FORMAT_YV12 \
158 { 'Y', 'V', '1', '2', 0x00, 0x00, 0x10, 0x00, \
159 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
160 #define UVC_GUID_FORMAT_I420 \
161 { 'I', '4', '2', '0', 0x00, 0x00, 0x10, 0x00, \
162 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
163 #define UVC_GUID_FORMAT_UYVY \
164 { 'U', 'Y', 'V', 'Y', 0x00, 0x00, 0x10, 0x00, \
165 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
166 #define UVC_GUID_FORMAT_Y800 \
167 { 'Y', '8', '0', '0', 0x00, 0x00, 0x10, 0x00, \
168 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
169 #define UVC_GUID_FORMAT_Y16 \
170 { 'Y', '1', '6', ' ', 0x00, 0x00, 0x10, 0x00, \
171 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
172 #define UVC_GUID_FORMAT_BY8 \
173 { 'B', 'Y', '8', ' ', 0x00, 0x00, 0x10, 0x00, \
174 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
175 #define UVC_GUID_FORMAT_RGBP \
176 { 'R', 'G', 'B', 'P', 0x00, 0x00, 0x10, 0x00, \
177 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
178 #define UVC_GUID_FORMAT_M420 \
179 { 'M', '4', '2', '0', 0x00, 0x00, 0x10, 0x00, \
180 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
182 /* ------------------------------------------------------------------------
183 * Driver specific constants.
186 #define DRIVER_VERSION "1.1.1"
188 /* Number of isochronous URBs. */
189 #define UVC_URBS 5
190 /* Maximum number of packets per URB. */
191 #define UVC_MAX_PACKETS 32
192 /* Maximum number of video buffers. */
193 #define UVC_MAX_VIDEO_BUFFERS 32
194 /* Maximum status buffer size in bytes of interrupt URB. */
195 #define UVC_MAX_STATUS_SIZE 16
197 #define UVC_CTRL_CONTROL_TIMEOUT 300
198 #define UVC_CTRL_STREAMING_TIMEOUT 5000
200 /* Maximum allowed number of control mappings per device */
201 #define UVC_MAX_CONTROL_MAPPINGS 1024
203 /* Devices quirks */
204 #define UVC_QUIRK_STATUS_INTERVAL 0x00000001
205 #define UVC_QUIRK_PROBE_MINMAX 0x00000002
206 #define UVC_QUIRK_PROBE_EXTRAFIELDS 0x00000004
207 #define UVC_QUIRK_BUILTIN_ISIGHT 0x00000008
208 #define UVC_QUIRK_STREAM_NO_FID 0x00000010
209 #define UVC_QUIRK_IGNORE_SELECTOR_UNIT 0x00000020
210 #define UVC_QUIRK_FIX_BANDWIDTH 0x00000080
211 #define UVC_QUIRK_PROBE_DEF 0x00000100
212 #define UVC_QUIRK_RESTRICT_FRAME_RATE 0x00000200
214 /* Format flags */
215 #define UVC_FMT_FLAG_COMPRESSED 0x00000001
216 #define UVC_FMT_FLAG_STREAM 0x00000002
218 /* ------------------------------------------------------------------------
219 * Structures.
222 struct uvc_device;
224 /* TODO: Put the most frequently accessed fields at the beginning of
225 * structures to maximize cache efficiency.
227 struct uvc_control_info {
228 struct list_head mappings;
230 __u8 entity[16];
231 __u8 index; /* Bit index in bmControls */
232 __u8 selector;
234 __u16 size;
235 __u32 flags;
238 struct uvc_control_mapping {
239 struct list_head list;
241 struct uvc_control_info *ctrl;
243 __u32 id;
244 __u8 name[32];
245 __u8 entity[16];
246 __u8 selector;
248 __u8 size;
249 __u8 offset;
250 enum v4l2_ctrl_type v4l2_type;
251 __u32 data_type;
253 struct uvc_menu_info *menu_info;
254 __u32 menu_count;
256 __s32 (*get) (struct uvc_control_mapping *mapping, __u8 query,
257 const __u8 *data);
258 void (*set) (struct uvc_control_mapping *mapping, __s32 value,
259 __u8 *data);
262 struct uvc_control {
263 struct uvc_entity *entity;
264 struct uvc_control_info info;
266 __u8 index; /* Used to match the uvc_control entry with a
267 uvc_control_info. */
268 __u8 dirty:1,
269 loaded:1,
270 modified:1,
271 cached:1,
272 initialized:1;
274 __u8 *uvc_data;
277 struct uvc_format_desc {
278 char *name;
279 __u8 guid[16];
280 __u32 fcc;
283 /* The term 'entity' refers to both UVC units and UVC terminals.
285 * The type field is either the terminal type (wTerminalType in the terminal
286 * descriptor), or the unit type (bDescriptorSubtype in the unit descriptor).
287 * As the bDescriptorSubtype field is one byte long, the type value will
288 * always have a null MSB for units. All terminal types defined by the UVC
289 * specification have a non-null MSB, so it is safe to use the MSB to
290 * differentiate between units and terminals as long as the descriptor parsing
291 * code makes sure terminal types have a non-null MSB.
293 * For terminals, the type's most significant bit stores the terminal
294 * direction (either UVC_TERM_INPUT or UVC_TERM_OUTPUT). The type field should
295 * always be accessed with the UVC_ENTITY_* macros and never directly.
298 struct uvc_entity {
299 struct list_head list; /* Entity as part of a UVC device. */
300 struct list_head chain; /* Entity as part of a video device
301 * chain. */
302 __u8 id;
303 __u16 type;
304 char name[64];
306 /* Media controller-related fields. */
307 struct video_device *vdev;
308 struct v4l2_subdev subdev;
309 unsigned int num_pads;
310 unsigned int num_links;
311 struct media_pad *pads;
313 union {
314 struct {
315 __u16 wObjectiveFocalLengthMin;
316 __u16 wObjectiveFocalLengthMax;
317 __u16 wOcularFocalLength;
318 __u8 bControlSize;
319 __u8 *bmControls;
320 } camera;
322 struct {
323 __u8 bControlSize;
324 __u8 *bmControls;
325 __u8 bTransportModeSize;
326 __u8 *bmTransportModes;
327 } media;
329 struct {
330 } output;
332 struct {
333 __u16 wMaxMultiplier;
334 __u8 bControlSize;
335 __u8 *bmControls;
336 __u8 bmVideoStandards;
337 } processing;
339 struct {
340 } selector;
342 struct {
343 __u8 guidExtensionCode[16];
344 __u8 bNumControls;
345 __u8 bControlSize;
346 __u8 *bmControls;
347 __u8 *bmControlsType;
348 } extension;
351 __u8 bNrInPins;
352 __u8 *baSourceID;
354 unsigned int ncontrols;
355 struct uvc_control *controls;
358 struct uvc_frame {
359 __u8 bFrameIndex;
360 __u8 bmCapabilities;
361 __u16 wWidth;
362 __u16 wHeight;
363 __u32 dwMinBitRate;
364 __u32 dwMaxBitRate;
365 __u32 dwMaxVideoFrameBufferSize;
366 __u8 bFrameIntervalType;
367 __u32 dwDefaultFrameInterval;
368 __u32 *dwFrameInterval;
371 struct uvc_format {
372 __u8 type;
373 __u8 index;
374 __u8 bpp;
375 __u8 colorspace;
376 __u32 fcc;
377 __u32 flags;
379 char name[32];
381 unsigned int nframes;
382 struct uvc_frame *frame;
385 struct uvc_streaming_header {
386 __u8 bNumFormats;
387 __u8 bEndpointAddress;
388 __u8 bTerminalLink;
389 __u8 bControlSize;
390 __u8 *bmaControls;
391 /* The following fields are used by input headers only. */
392 __u8 bmInfo;
393 __u8 bStillCaptureMethod;
394 __u8 bTriggerSupport;
395 __u8 bTriggerUsage;
398 enum uvc_buffer_state {
399 UVC_BUF_STATE_IDLE = 0,
400 UVC_BUF_STATE_QUEUED = 1,
401 UVC_BUF_STATE_ACTIVE = 2,
402 UVC_BUF_STATE_READY = 3,
403 UVC_BUF_STATE_DONE = 4,
404 UVC_BUF_STATE_ERROR = 5,
407 struct uvc_buffer {
408 unsigned long vma_use_count;
409 struct list_head stream;
411 /* Touched by interrupt handler. */
412 struct v4l2_buffer buf;
413 struct list_head queue;
414 wait_queue_head_t wait;
415 enum uvc_buffer_state state;
416 unsigned int error;
419 #define UVC_QUEUE_STREAMING (1 << 0)
420 #define UVC_QUEUE_DISCONNECTED (1 << 1)
421 #define UVC_QUEUE_DROP_CORRUPTED (1 << 2)
423 struct uvc_video_queue {
424 enum v4l2_buf_type type;
426 void *mem;
427 unsigned int flags;
429 unsigned int count;
430 unsigned int buf_size;
431 unsigned int buf_used;
432 struct uvc_buffer buffer[UVC_MAX_VIDEO_BUFFERS];
433 struct mutex mutex; /* protects buffers and mainqueue */
434 spinlock_t irqlock; /* protects irqqueue */
436 struct list_head mainqueue;
437 struct list_head irqqueue;
440 struct uvc_video_chain {
441 struct uvc_device *dev;
442 struct list_head list;
444 struct list_head entities; /* All entities */
445 struct uvc_entity *processing; /* Processing unit */
446 struct uvc_entity *selector; /* Selector unit */
448 struct mutex ctrl_mutex; /* Protects ctrl.info */
451 struct uvc_streaming {
452 struct list_head list;
453 struct uvc_device *dev;
454 struct video_device *vdev;
455 struct uvc_video_chain *chain;
456 atomic_t active;
458 struct usb_interface *intf;
459 int intfnum;
460 __u16 maxpsize;
462 struct uvc_streaming_header header;
463 enum v4l2_buf_type type;
465 unsigned int nformats;
466 struct uvc_format *format;
468 struct uvc_streaming_control ctrl;
469 struct uvc_format *cur_format;
470 struct uvc_frame *cur_frame;
471 /* Protect access to ctrl, cur_format, cur_frame and hardware video
472 * probe control.
474 struct mutex mutex;
476 unsigned int frozen : 1;
477 struct uvc_video_queue queue;
478 void (*decode) (struct urb *urb, struct uvc_streaming *video,
479 struct uvc_buffer *buf);
481 /* Context data used by the bulk completion handler. */
482 struct {
483 __u8 header[256];
484 unsigned int header_size;
485 int skip_payload;
486 __u32 payload_size;
487 __u32 max_payload_size;
488 } bulk;
490 struct urb *urb[UVC_URBS];
491 char *urb_buffer[UVC_URBS];
492 dma_addr_t urb_dma[UVC_URBS];
493 unsigned int urb_size;
495 __u32 sequence;
496 __u8 last_fid;
499 enum uvc_device_state {
500 UVC_DEV_DISCONNECTED = 1,
503 struct uvc_device {
504 struct usb_device *udev;
505 struct usb_interface *intf;
506 unsigned long warnings;
507 __u32 quirks;
508 int intfnum;
509 char name[32];
511 enum uvc_device_state state;
512 atomic_t users;
513 atomic_t nmappings;
515 /* Video control interface */
516 #ifdef CONFIG_MEDIA_CONTROLLER
517 struct media_device mdev;
518 #endif
519 struct v4l2_device vdev;
520 __u16 uvc_version;
521 __u32 clock_frequency;
523 struct list_head entities;
524 struct list_head chains;
526 /* Video Streaming interfaces */
527 struct list_head streams;
528 atomic_t nstreams;
530 /* Status Interrupt Endpoint */
531 struct usb_host_endpoint *int_ep;
532 struct urb *int_urb;
533 __u8 *status;
534 struct input_dev *input;
535 char input_phys[64];
538 enum uvc_handle_state {
539 UVC_HANDLE_PASSIVE = 0,
540 UVC_HANDLE_ACTIVE = 1,
543 struct uvc_fh {
544 struct uvc_video_chain *chain;
545 struct uvc_streaming *stream;
546 enum uvc_handle_state state;
549 struct uvc_driver {
550 struct usb_driver driver;
553 /* ------------------------------------------------------------------------
554 * Debugging, printing and logging
557 #define UVC_TRACE_PROBE (1 << 0)
558 #define UVC_TRACE_DESCR (1 << 1)
559 #define UVC_TRACE_CONTROL (1 << 2)
560 #define UVC_TRACE_FORMAT (1 << 3)
561 #define UVC_TRACE_CAPTURE (1 << 4)
562 #define UVC_TRACE_CALLS (1 << 5)
563 #define UVC_TRACE_IOCTL (1 << 6)
564 #define UVC_TRACE_FRAME (1 << 7)
565 #define UVC_TRACE_SUSPEND (1 << 8)
566 #define UVC_TRACE_STATUS (1 << 9)
567 #define UVC_TRACE_VIDEO (1 << 10)
569 #define UVC_WARN_MINMAX 0
570 #define UVC_WARN_PROBE_DEF 1
572 extern unsigned int uvc_clock_param;
573 extern unsigned int uvc_no_drop_param;
574 extern unsigned int uvc_trace_param;
575 extern unsigned int uvc_timeout_param;
577 #define uvc_trace(flag, msg...) \
578 do { \
579 if (uvc_trace_param & flag) \
580 printk(KERN_DEBUG "uvcvideo: " msg); \
581 } while (0)
583 #define uvc_warn_once(dev, warn, msg...) \
584 do { \
585 if (!test_and_set_bit(warn, &dev->warnings)) \
586 printk(KERN_INFO "uvcvideo: " msg); \
587 } while (0)
589 #define uvc_printk(level, msg...) \
590 printk(level "uvcvideo: " msg)
592 /* --------------------------------------------------------------------------
593 * Internal functions.
596 /* Core driver */
597 extern struct uvc_driver uvc_driver;
599 extern struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id);
601 /* Video buffers queue management. */
602 extern void uvc_queue_init(struct uvc_video_queue *queue,
603 enum v4l2_buf_type type, int drop_corrupted);
604 extern int uvc_alloc_buffers(struct uvc_video_queue *queue,
605 unsigned int nbuffers, unsigned int buflength);
606 extern int uvc_free_buffers(struct uvc_video_queue *queue);
607 extern int uvc_query_buffer(struct uvc_video_queue *queue,
608 struct v4l2_buffer *v4l2_buf);
609 extern int uvc_queue_buffer(struct uvc_video_queue *queue,
610 struct v4l2_buffer *v4l2_buf);
611 extern int uvc_dequeue_buffer(struct uvc_video_queue *queue,
612 struct v4l2_buffer *v4l2_buf, int nonblocking);
613 extern int uvc_queue_enable(struct uvc_video_queue *queue, int enable);
614 extern void uvc_queue_cancel(struct uvc_video_queue *queue, int disconnect);
615 extern struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue,
616 struct uvc_buffer *buf);
617 extern int uvc_queue_mmap(struct uvc_video_queue *queue,
618 struct vm_area_struct *vma);
619 extern unsigned int uvc_queue_poll(struct uvc_video_queue *queue,
620 struct file *file, poll_table *wait);
621 #ifndef CONFIG_MMU
622 extern unsigned long uvc_queue_get_unmapped_area(struct uvc_video_queue *queue,
623 unsigned long pgoff);
624 #endif
625 extern int uvc_queue_allocated(struct uvc_video_queue *queue);
626 static inline int uvc_queue_streaming(struct uvc_video_queue *queue)
628 return queue->flags & UVC_QUEUE_STREAMING;
631 /* V4L2 interface */
632 extern const struct v4l2_file_operations uvc_fops;
634 /* Media controller */
635 extern int uvc_mc_register_entities(struct uvc_video_chain *chain);
636 extern void uvc_mc_cleanup_entity(struct uvc_entity *entity);
638 /* Video */
639 extern int uvc_video_init(struct uvc_streaming *stream);
640 extern int uvc_video_suspend(struct uvc_streaming *stream);
641 extern int uvc_video_resume(struct uvc_streaming *stream);
642 extern int uvc_video_enable(struct uvc_streaming *stream, int enable);
643 extern int uvc_probe_video(struct uvc_streaming *stream,
644 struct uvc_streaming_control *probe);
645 extern int uvc_commit_video(struct uvc_streaming *stream,
646 struct uvc_streaming_control *ctrl);
647 extern int uvc_query_ctrl(struct uvc_device *dev, __u8 query, __u8 unit,
648 __u8 intfnum, __u8 cs, void *data, __u16 size);
650 /* Status */
651 extern int uvc_status_init(struct uvc_device *dev);
652 extern void uvc_status_cleanup(struct uvc_device *dev);
653 extern int uvc_status_start(struct uvc_device *dev);
654 extern void uvc_status_stop(struct uvc_device *dev);
655 extern int uvc_status_suspend(struct uvc_device *dev);
656 extern int uvc_status_resume(struct uvc_device *dev);
658 /* Controls */
659 extern int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
660 struct v4l2_queryctrl *v4l2_ctrl);
661 extern int uvc_query_v4l2_menu(struct uvc_video_chain *chain,
662 struct v4l2_querymenu *query_menu);
664 extern int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
665 const struct uvc_control_mapping *mapping);
666 extern int uvc_ctrl_init_device(struct uvc_device *dev);
667 extern void uvc_ctrl_cleanup_device(struct uvc_device *dev);
668 extern int uvc_ctrl_resume_device(struct uvc_device *dev);
670 extern int uvc_ctrl_begin(struct uvc_video_chain *chain);
671 extern int __uvc_ctrl_commit(struct uvc_video_chain *chain, int rollback);
672 static inline int uvc_ctrl_commit(struct uvc_video_chain *chain)
674 return __uvc_ctrl_commit(chain, 0);
676 static inline int uvc_ctrl_rollback(struct uvc_video_chain *chain)
678 return __uvc_ctrl_commit(chain, 1);
681 extern int uvc_ctrl_get(struct uvc_video_chain *chain,
682 struct v4l2_ext_control *xctrl);
683 extern int uvc_ctrl_set(struct uvc_video_chain *chain,
684 struct v4l2_ext_control *xctrl);
686 extern int uvc_xu_ctrl_query(struct uvc_video_chain *chain,
687 struct uvc_xu_control_query *xqry);
689 /* Utility functions */
690 extern void uvc_simplify_fraction(uint32_t *numerator, uint32_t *denominator,
691 unsigned int n_terms, unsigned int threshold);
692 extern uint32_t uvc_fraction_to_interval(uint32_t numerator,
693 uint32_t denominator);
694 extern struct usb_host_endpoint *uvc_find_endpoint(
695 struct usb_host_interface *alts, __u8 epaddr);
697 /* Quirks support */
698 void uvc_video_decode_isight(struct urb *urb, struct uvc_streaming *stream,
699 struct uvc_buffer *buf);
701 #endif /* __KERNEL__ */
703 #endif