1#ifndef _USB_VIDEO_H_
2#define _USB_VIDEO_H_
3
4#ifndef __KERNEL__
5#error "The uvcvideo.h header is deprecated, use linux/uvcvideo.h instead."
6#endif
7
8#include <linux/kernel.h>
9#include <linux/poll.h>
10#include <linux/usb.h>
11#include <linux/usb/video.h>
12#include <linux/uvcvideo.h>
13#include <linux/videodev2.h>
14#include <media/media-device.h>
15#include <media/v4l2-device.h>
16#include <media/v4l2-event.h>
17#include <media/v4l2-fh.h>
18#include <media/videobuf2-v4l2.h>
19
20
21
22
23
24#define UVC_TERM_INPUT 0x0000
25#define UVC_TERM_OUTPUT 0x8000
26#define UVC_TERM_DIRECTION(term) ((term)->type & 0x8000)
27
28#define UVC_ENTITY_TYPE(entity) ((entity)->type & 0x7fff)
29#define UVC_ENTITY_IS_UNIT(entity) (((entity)->type & 0xff00) == 0)
30#define UVC_ENTITY_IS_TERM(entity) (((entity)->type & 0xff00) != 0)
31#define UVC_ENTITY_IS_ITERM(entity) \
32 (UVC_ENTITY_IS_TERM(entity) && \
33 ((entity)->type & 0x8000) == UVC_TERM_INPUT)
34#define UVC_ENTITY_IS_OTERM(entity) \
35 (UVC_ENTITY_IS_TERM(entity) && \
36 ((entity)->type & 0x8000) == UVC_TERM_OUTPUT)
37
38
39
40
41
42#define UVC_GUID_UVC_CAMERA \
43 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
44 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}
45#define UVC_GUID_UVC_OUTPUT \
46 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
47 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02}
48#define UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT \
49 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
50 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03}
51#define UVC_GUID_UVC_PROCESSING \
52 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
53 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01}
54#define UVC_GUID_UVC_SELECTOR \
55 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
56 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02}
57
58#define UVC_GUID_FORMAT_MJPEG \
59 { 'M', 'J', 'P', 'G', 0x00, 0x00, 0x10, 0x00, \
60 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
61#define UVC_GUID_FORMAT_YUY2 \
62 { 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, \
63 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
64#define UVC_GUID_FORMAT_YUY2_ISIGHT \
65 { 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, \
66 0x80, 0x00, 0x00, 0x00, 0x00, 0x38, 0x9b, 0x71}
67#define UVC_GUID_FORMAT_NV12 \
68 { 'N', 'V', '1', '2', 0x00, 0x00, 0x10, 0x00, \
69 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
70#define UVC_GUID_FORMAT_YV12 \
71 { 'Y', 'V', '1', '2', 0x00, 0x00, 0x10, 0x00, \
72 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
73#define UVC_GUID_FORMAT_I420 \
74 { 'I', '4', '2', '0', 0x00, 0x00, 0x10, 0x00, \
75 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
76#define UVC_GUID_FORMAT_UYVY \
77 { 'U', 'Y', 'V', 'Y', 0x00, 0x00, 0x10, 0x00, \
78 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
79#define UVC_GUID_FORMAT_Y800 \
80 { 'Y', '8', '0', '0', 0x00, 0x00, 0x10, 0x00, \
81 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
82#define UVC_GUID_FORMAT_Y8 \
83 { 'Y', '8', ' ', ' ', 0x00, 0x00, 0x10, 0x00, \
84 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
85#define UVC_GUID_FORMAT_Y10 \
86 { 'Y', '1', '0', ' ', 0x00, 0x00, 0x10, 0x00, \
87 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
88#define UVC_GUID_FORMAT_Y12 \
89 { 'Y', '1', '2', ' ', 0x00, 0x00, 0x10, 0x00, \
90 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
91#define UVC_GUID_FORMAT_Y16 \
92 { 'Y', '1', '6', ' ', 0x00, 0x00, 0x10, 0x00, \
93 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
94#define UVC_GUID_FORMAT_BY8 \
95 { 'B', 'Y', '8', ' ', 0x00, 0x00, 0x10, 0x00, \
96 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
97#define UVC_GUID_FORMAT_BA81 \
98 { 'B', 'A', '8', '1', 0x00, 0x00, 0x10, 0x00, \
99 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
100#define UVC_GUID_FORMAT_GBRG \
101 { 'G', 'B', 'R', 'G', 0x00, 0x00, 0x10, 0x00, \
102 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
103#define UVC_GUID_FORMAT_GRBG \
104 { 'G', 'R', 'B', 'G', 0x00, 0x00, 0x10, 0x00, \
105 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
106#define UVC_GUID_FORMAT_RGGB \
107 { 'R', 'G', 'G', 'B', 0x00, 0x00, 0x10, 0x00, \
108 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
109#define UVC_GUID_FORMAT_RGBP \
110 { 'R', 'G', 'B', 'P', 0x00, 0x00, 0x10, 0x00, \
111 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
112#define UVC_GUID_FORMAT_BGR3 \
113 { 0x7d, 0xeb, 0x36, 0xe4, 0x4f, 0x52, 0xce, 0x11, \
114 0x9f, 0x53, 0x00, 0x20, 0xaf, 0x0b, 0xa7, 0x70}
115#define UVC_GUID_FORMAT_M420 \
116 { 'M', '4', '2', '0', 0x00, 0x00, 0x10, 0x00, \
117 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
118
119#define UVC_GUID_FORMAT_H264 \
120 { 'H', '2', '6', '4', 0x00, 0x00, 0x10, 0x00, \
121 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
122#define UVC_GUID_FORMAT_Y8I \
123 { 'Y', '8', 'I', ' ', 0x00, 0x00, 0x10, 0x00, \
124 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
125#define UVC_GUID_FORMAT_Y12I \
126 { 'Y', '1', '2', 'I', 0x00, 0x00, 0x10, 0x00, \
127 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
128#define UVC_GUID_FORMAT_Z16 \
129 { 'Z', '1', '6', ' ', 0x00, 0x00, 0x10, 0x00, \
130 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
131#define UVC_GUID_FORMAT_RW10 \
132 { 'R', 'W', '1', '0', 0x00, 0x00, 0x10, 0x00, \
133 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
134
135
136
137
138
139#define DRIVER_VERSION "1.1.1"
140
141
142#define UVC_URBS 5
143
144#define UVC_MAX_PACKETS 32
145
146#define UVC_MAX_STATUS_SIZE 16
147
148#define UVC_CTRL_CONTROL_TIMEOUT 300
149#define UVC_CTRL_STREAMING_TIMEOUT 5000
150
151
152#define UVC_MAX_CONTROL_MAPPINGS 1024
153#define UVC_MAX_CONTROL_MENU_ENTRIES 32
154
155
156#define UVC_QUIRK_STATUS_INTERVAL 0x00000001
157#define UVC_QUIRK_PROBE_MINMAX 0x00000002
158#define UVC_QUIRK_PROBE_EXTRAFIELDS 0x00000004
159#define UVC_QUIRK_BUILTIN_ISIGHT 0x00000008
160#define UVC_QUIRK_STREAM_NO_FID 0x00000010
161#define UVC_QUIRK_IGNORE_SELECTOR_UNIT 0x00000020
162#define UVC_QUIRK_FIX_BANDWIDTH 0x00000080
163#define UVC_QUIRK_PROBE_DEF 0x00000100
164#define UVC_QUIRK_RESTRICT_FRAME_RATE 0x00000200
165#define UVC_QUIRK_RESTORE_CTRLS_ON_INIT 0x00000400
166#define UVC_QUIRK_FORCE_Y8 0x00000800
167
168
169#define UVC_FMT_FLAG_COMPRESSED 0x00000001
170#define UVC_FMT_FLAG_STREAM 0x00000002
171
172
173
174
175
176struct uvc_device;
177
178
179
180
181struct uvc_control_info {
182 struct list_head mappings;
183
184 __u8 entity[16];
185 __u8 index;
186 __u8 selector;
187
188 __u16 size;
189 __u32 flags;
190};
191
192struct uvc_control_mapping {
193 struct list_head list;
194 struct list_head ev_subs;
195
196 __u32 id;
197 __u8 name[32];
198 __u8 entity[16];
199 __u8 selector;
200
201 __u8 size;
202 __u8 offset;
203 enum v4l2_ctrl_type v4l2_type;
204 __u32 data_type;
205
206 struct uvc_menu_info *menu_info;
207 __u32 menu_count;
208
209 __u32 master_id;
210 __s32 master_manual;
211 __u32 slave_ids[2];
212
213 __s32 (*get) (struct uvc_control_mapping *mapping, __u8 query,
214 const __u8 *data);
215 void (*set) (struct uvc_control_mapping *mapping, __s32 value,
216 __u8 *data);
217};
218
219struct uvc_control {
220 struct uvc_entity *entity;
221 struct uvc_control_info info;
222
223 __u8 index;
224
225 __u8 dirty:1,
226 loaded:1,
227 modified:1,
228 cached:1,
229 initialized:1;
230
231 __u8 *uvc_data;
232};
233
234struct uvc_format_desc {
235 char *name;
236 __u8 guid[16];
237 __u32 fcc;
238};
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255#define UVC_ENTITY_FLAG_DEFAULT (1 << 0)
256
257struct uvc_entity {
258 struct list_head list;
259 struct list_head chain;
260
261 unsigned int flags;
262
263 __u8 id;
264 __u16 type;
265 char name[64];
266
267
268 struct video_device *vdev;
269 struct v4l2_subdev subdev;
270 unsigned int num_pads;
271 unsigned int num_links;
272 struct media_pad *pads;
273
274 union {
275 struct {
276 __u16 wObjectiveFocalLengthMin;
277 __u16 wObjectiveFocalLengthMax;
278 __u16 wOcularFocalLength;
279 __u8 bControlSize;
280 __u8 *bmControls;
281 } camera;
282
283 struct {
284 __u8 bControlSize;
285 __u8 *bmControls;
286 __u8 bTransportModeSize;
287 __u8 *bmTransportModes;
288 } media;
289
290 struct {
291 } output;
292
293 struct {
294 __u16 wMaxMultiplier;
295 __u8 bControlSize;
296 __u8 *bmControls;
297 __u8 bmVideoStandards;
298 } processing;
299
300 struct {
301 } selector;
302
303 struct {
304 __u8 guidExtensionCode[16];
305 __u8 bNumControls;
306 __u8 bControlSize;
307 __u8 *bmControls;
308 __u8 *bmControlsType;
309 } extension;
310 };
311
312 __u8 bNrInPins;
313 __u8 *baSourceID;
314
315 unsigned int ncontrols;
316 struct uvc_control *controls;
317};
318
319struct uvc_frame {
320 __u8 bFrameIndex;
321 __u8 bmCapabilities;
322 __u16 wWidth;
323 __u16 wHeight;
324 __u32 dwMinBitRate;
325 __u32 dwMaxBitRate;
326 __u32 dwMaxVideoFrameBufferSize;
327 __u8 bFrameIntervalType;
328 __u32 dwDefaultFrameInterval;
329 __u32 *dwFrameInterval;
330};
331
332struct uvc_format {
333 __u8 type;
334 __u8 index;
335 __u8 bpp;
336 __u8 colorspace;
337 __u32 fcc;
338 __u32 flags;
339
340 char name[32];
341
342 unsigned int nframes;
343 struct uvc_frame *frame;
344};
345
346struct uvc_streaming_header {
347 __u8 bNumFormats;
348 __u8 bEndpointAddress;
349 __u8 bTerminalLink;
350 __u8 bControlSize;
351 __u8 *bmaControls;
352
353 __u8 bmInfo;
354 __u8 bStillCaptureMethod;
355 __u8 bTriggerSupport;
356 __u8 bTriggerUsage;
357};
358
359enum uvc_buffer_state {
360 UVC_BUF_STATE_IDLE = 0,
361 UVC_BUF_STATE_QUEUED = 1,
362 UVC_BUF_STATE_ACTIVE = 2,
363 UVC_BUF_STATE_READY = 3,
364 UVC_BUF_STATE_DONE = 4,
365 UVC_BUF_STATE_ERROR = 5,
366};
367
368struct uvc_buffer {
369 struct vb2_v4l2_buffer buf;
370 struct list_head queue;
371
372 enum uvc_buffer_state state;
373 unsigned int error;
374
375 void *mem;
376 unsigned int length;
377 unsigned int bytesused;
378
379 u32 pts;
380};
381
382#define UVC_QUEUE_DISCONNECTED (1 << 0)
383#define UVC_QUEUE_DROP_CORRUPTED (1 << 1)
384
385struct uvc_video_queue {
386 struct vb2_queue queue;
387 struct mutex mutex;
388
389 unsigned int flags;
390 unsigned int buf_used;
391
392 spinlock_t irqlock;
393 struct list_head irqqueue;
394};
395
396struct uvc_video_chain {
397 struct uvc_device *dev;
398 struct list_head list;
399
400 struct list_head entities;
401 struct uvc_entity *processing;
402 struct uvc_entity *selector;
403
404 struct mutex ctrl_mutex;
405
406 struct v4l2_prio_state prio;
407 u32 caps;
408};
409
410struct uvc_stats_frame {
411 unsigned int size;
412 unsigned int first_data;
413
414 unsigned int nb_packets;
415 unsigned int nb_empty;
416 unsigned int nb_invalid;
417 unsigned int nb_errors;
418
419 unsigned int nb_pts;
420 unsigned int nb_pts_diffs;
421 unsigned int last_pts_diff;
422 bool has_initial_pts;
423 bool has_early_pts;
424 u32 pts;
425
426 unsigned int nb_scr;
427 unsigned int nb_scr_diffs;
428 u16 scr_sof;
429 u32 scr_stc;
430};
431
432struct uvc_stats_stream {
433 struct timespec start_ts;
434 struct timespec stop_ts;
435
436 unsigned int nb_frames;
437
438 unsigned int nb_packets;
439 unsigned int nb_empty;
440 unsigned int nb_invalid;
441 unsigned int nb_errors;
442
443 unsigned int nb_pts_constant;
444 unsigned int nb_pts_early;
445 unsigned int nb_pts_initial;
446
447 unsigned int nb_scr_count_ok;
448 unsigned int nb_scr_diffs_ok;
449 unsigned int scr_sof_count;
450 unsigned int scr_sof;
451 unsigned int min_sof;
452 unsigned int max_sof;
453};
454
455struct uvc_streaming {
456 struct list_head list;
457 struct uvc_device *dev;
458 struct video_device vdev;
459 struct uvc_video_chain *chain;
460 atomic_t active;
461
462 struct usb_interface *intf;
463 int intfnum;
464 __u16 maxpsize;
465
466 struct uvc_streaming_header header;
467 enum v4l2_buf_type type;
468
469 unsigned int nformats;
470 struct uvc_format *format;
471
472 struct uvc_streaming_control ctrl;
473 struct uvc_format *def_format;
474 struct uvc_format *cur_format;
475 struct uvc_frame *cur_frame;
476
477
478
479
480 struct mutex mutex;
481
482
483 unsigned int frozen : 1;
484 struct uvc_video_queue queue;
485 void (*decode) (struct urb *urb, struct uvc_streaming *video,
486 struct uvc_buffer *buf);
487
488
489 struct {
490 __u8 header[256];
491 unsigned int header_size;
492 int skip_payload;
493 __u32 payload_size;
494 __u32 max_payload_size;
495 } bulk;
496
497 struct urb *urb[UVC_URBS];
498 char *urb_buffer[UVC_URBS];
499 dma_addr_t urb_dma[UVC_URBS];
500 unsigned int urb_size;
501
502 __u32 sequence;
503 __u8 last_fid;
504
505
506 struct dentry *debugfs_dir;
507 struct {
508 struct uvc_stats_frame frame;
509 struct uvc_stats_stream stream;
510 } stats;
511
512
513 struct uvc_clock {
514 struct uvc_clock_sample {
515 u32 dev_stc;
516 u16 dev_sof;
517 struct timespec host_ts;
518 u16 host_sof;
519 } *samples;
520
521 unsigned int head;
522 unsigned int count;
523 unsigned int size;
524
525 u16 last_sof;
526 u16 sof_offset;
527
528 spinlock_t lock;
529 } clock;
530};
531
532struct uvc_device {
533 struct usb_device *udev;
534 struct usb_interface *intf;
535 unsigned long warnings;
536 __u32 quirks;
537 int intfnum;
538 char name[32];
539
540 struct mutex lock;
541 unsigned int users;
542 atomic_t nmappings;
543
544
545#ifdef CONFIG_MEDIA_CONTROLLER
546 struct media_device mdev;
547#endif
548 struct v4l2_device vdev;
549 __u16 uvc_version;
550 __u32 clock_frequency;
551
552 struct list_head entities;
553 struct list_head chains;
554
555
556 struct list_head streams;
557 atomic_t nstreams;
558
559
560 struct usb_host_endpoint *int_ep;
561 struct urb *int_urb;
562 __u8 *status;
563 struct input_dev *input;
564 char input_phys[64];
565};
566
567enum uvc_handle_state {
568 UVC_HANDLE_PASSIVE = 0,
569 UVC_HANDLE_ACTIVE = 1,
570};
571
572struct uvc_fh {
573 struct v4l2_fh vfh;
574 struct uvc_video_chain *chain;
575 struct uvc_streaming *stream;
576 enum uvc_handle_state state;
577};
578
579struct uvc_driver {
580 struct usb_driver driver;
581};
582
583
584
585
586
587#define UVC_TRACE_PROBE (1 << 0)
588#define UVC_TRACE_DESCR (1 << 1)
589#define UVC_TRACE_CONTROL (1 << 2)
590#define UVC_TRACE_FORMAT (1 << 3)
591#define UVC_TRACE_CAPTURE (1 << 4)
592#define UVC_TRACE_CALLS (1 << 5)
593#define UVC_TRACE_FRAME (1 << 7)
594#define UVC_TRACE_SUSPEND (1 << 8)
595#define UVC_TRACE_STATUS (1 << 9)
596#define UVC_TRACE_VIDEO (1 << 10)
597#define UVC_TRACE_STATS (1 << 11)
598#define UVC_TRACE_CLOCK (1 << 12)
599
600#define UVC_WARN_MINMAX 0
601#define UVC_WARN_PROBE_DEF 1
602#define UVC_WARN_XU_GET_RES 2
603
604extern unsigned int uvc_clock_param;
605extern unsigned int uvc_no_drop_param;
606extern unsigned int uvc_trace_param;
607extern unsigned int uvc_timeout_param;
608extern unsigned int uvc_hw_timestamps_param;
609
610#define uvc_trace(flag, msg...) \
611 do { \
612 if (uvc_trace_param & flag) \
613 printk(KERN_DEBUG "uvcvideo: " msg); \
614 } while (0)
615
616#define uvc_warn_once(dev, warn, msg...) \
617 do { \
618 if (!test_and_set_bit(warn, &dev->warnings)) \
619 printk(KERN_INFO "uvcvideo: " msg); \
620 } while (0)
621
622#define uvc_printk(level, msg...) \
623 printk(level "uvcvideo: " msg)
624
625
626
627
628
629
630extern struct uvc_driver uvc_driver;
631
632extern struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id);
633
634
635extern int uvc_queue_init(struct uvc_video_queue *queue,
636 enum v4l2_buf_type type, int drop_corrupted);
637extern void uvc_queue_release(struct uvc_video_queue *queue);
638extern int uvc_request_buffers(struct uvc_video_queue *queue,
639 struct v4l2_requestbuffers *rb);
640extern int uvc_query_buffer(struct uvc_video_queue *queue,
641 struct v4l2_buffer *v4l2_buf);
642extern int uvc_create_buffers(struct uvc_video_queue *queue,
643 struct v4l2_create_buffers *v4l2_cb);
644extern int uvc_queue_buffer(struct uvc_video_queue *queue,
645 struct v4l2_buffer *v4l2_buf);
646extern int uvc_export_buffer(struct uvc_video_queue *queue,
647 struct v4l2_exportbuffer *exp);
648extern int uvc_dequeue_buffer(struct uvc_video_queue *queue,
649 struct v4l2_buffer *v4l2_buf, int nonblocking);
650extern int uvc_queue_streamon(struct uvc_video_queue *queue,
651 enum v4l2_buf_type type);
652extern int uvc_queue_streamoff(struct uvc_video_queue *queue,
653 enum v4l2_buf_type type);
654extern void uvc_queue_cancel(struct uvc_video_queue *queue, int disconnect);
655extern struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue,
656 struct uvc_buffer *buf);
657extern int uvc_queue_mmap(struct uvc_video_queue *queue,
658 struct vm_area_struct *vma);
659extern unsigned int uvc_queue_poll(struct uvc_video_queue *queue,
660 struct file *file, poll_table *wait);
661#ifndef CONFIG_MMU
662extern unsigned long uvc_queue_get_unmapped_area(struct uvc_video_queue *queue,
663 unsigned long pgoff);
664#endif
665extern int uvc_queue_allocated(struct uvc_video_queue *queue);
666static inline int uvc_queue_streaming(struct uvc_video_queue *queue)
667{
668 return vb2_is_streaming(&queue->queue);
669}
670
671
672extern const struct v4l2_ioctl_ops uvc_ioctl_ops;
673extern const struct v4l2_file_operations uvc_fops;
674
675
676extern int uvc_mc_register_entities(struct uvc_video_chain *chain);
677extern void uvc_mc_cleanup_entity(struct uvc_entity *entity);
678
679
680extern int uvc_video_init(struct uvc_streaming *stream);
681extern int uvc_video_suspend(struct uvc_streaming *stream);
682extern int uvc_video_resume(struct uvc_streaming *stream, int reset);
683extern int uvc_video_enable(struct uvc_streaming *stream, int enable);
684extern int uvc_probe_video(struct uvc_streaming *stream,
685 struct uvc_streaming_control *probe);
686extern int uvc_query_ctrl(struct uvc_device *dev, __u8 query, __u8 unit,
687 __u8 intfnum, __u8 cs, void *data, __u16 size);
688void uvc_video_clock_update(struct uvc_streaming *stream,
689 struct vb2_v4l2_buffer *vbuf,
690 struct uvc_buffer *buf);
691
692
693extern int uvc_status_init(struct uvc_device *dev);
694extern void uvc_status_cleanup(struct uvc_device *dev);
695extern int uvc_status_start(struct uvc_device *dev, gfp_t flags);
696extern void uvc_status_stop(struct uvc_device *dev);
697
698
699extern const struct v4l2_subscribed_event_ops uvc_ctrl_sub_ev_ops;
700
701extern int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
702 struct v4l2_queryctrl *v4l2_ctrl);
703extern int uvc_query_v4l2_menu(struct uvc_video_chain *chain,
704 struct v4l2_querymenu *query_menu);
705
706extern int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
707 const struct uvc_control_mapping *mapping);
708extern int uvc_ctrl_init_device(struct uvc_device *dev);
709extern void uvc_ctrl_cleanup_device(struct uvc_device *dev);
710extern int uvc_ctrl_restore_values(struct uvc_device *dev);
711
712extern int uvc_ctrl_begin(struct uvc_video_chain *chain);
713extern int __uvc_ctrl_commit(struct uvc_fh *handle, int rollback,
714 const struct v4l2_ext_control *xctrls,
715 unsigned int xctrls_count);
716static inline int uvc_ctrl_commit(struct uvc_fh *handle,
717 const struct v4l2_ext_control *xctrls,
718 unsigned int xctrls_count)
719{
720 return __uvc_ctrl_commit(handle, 0, xctrls, xctrls_count);
721}
722static inline int uvc_ctrl_rollback(struct uvc_fh *handle)
723{
724 return __uvc_ctrl_commit(handle, 1, NULL, 0);
725}
726
727extern int uvc_ctrl_get(struct uvc_video_chain *chain,
728 struct v4l2_ext_control *xctrl);
729extern int uvc_ctrl_set(struct uvc_video_chain *chain,
730 struct v4l2_ext_control *xctrl);
731
732extern int uvc_xu_ctrl_query(struct uvc_video_chain *chain,
733 struct uvc_xu_control_query *xqry);
734
735
736extern void uvc_simplify_fraction(uint32_t *numerator, uint32_t *denominator,
737 unsigned int n_terms, unsigned int threshold);
738extern uint32_t uvc_fraction_to_interval(uint32_t numerator,
739 uint32_t denominator);
740extern struct usb_host_endpoint *uvc_find_endpoint(
741 struct usb_host_interface *alts, __u8 epaddr);
742
743
744void uvc_video_decode_isight(struct urb *urb, struct uvc_streaming *stream,
745 struct uvc_buffer *buf);
746
747
748int uvc_debugfs_init(void);
749void uvc_debugfs_cleanup(void);
750int uvc_debugfs_init_stream(struct uvc_streaming *stream);
751void uvc_debugfs_cleanup_stream(struct uvc_streaming *stream);
752
753size_t uvc_video_stats_dump(struct uvc_streaming *stream, char *buf,
754 size_t size);
755
756#endif
757
