1
2#ifndef _USB_VIDEO_H_
3#define _USB_VIDEO_H_
4
5#ifndef __KERNEL__
6#error "The uvcvideo.h header is deprecated, use linux/uvcvideo.h instead."
7#endif
8
9#include <linux/kernel.h>
10#include <linux/poll.h>
11#include <linux/usb.h>
12#include <linux/usb/video.h>
13#include <linux/uvcvideo.h>
14#include <linux/videodev2.h>
15#include <media/media-device.h>
16#include <media/v4l2-device.h>
17#include <media/v4l2-event.h>
18#include <media/v4l2-fh.h>
19#include <media/videobuf2-v4l2.h>
20
21
22
23
24
25#define UVC_TERM_INPUT 0x0000
26#define UVC_TERM_OUTPUT 0x8000
27#define UVC_TERM_DIRECTION(term) ((term)->type & 0x8000)
28
29#define UVC_ENTITY_TYPE(entity) ((entity)->type & 0x7fff)
30#define UVC_ENTITY_IS_UNIT(entity) (((entity)->type & 0xff00) == 0)
31#define UVC_ENTITY_IS_TERM(entity) (((entity)->type & 0xff00) != 0)
32#define UVC_ENTITY_IS_ITERM(entity) \
33 (UVC_ENTITY_IS_TERM(entity) && \
34 ((entity)->type & 0x8000) == UVC_TERM_INPUT)
35#define UVC_ENTITY_IS_OTERM(entity) \
36 (UVC_ENTITY_IS_TERM(entity) && \
37 ((entity)->type & 0x8000) == UVC_TERM_OUTPUT)
38
39
40
41
42
43#define UVC_GUID_UVC_CAMERA \
44 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
45 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}
46#define UVC_GUID_UVC_OUTPUT \
47 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
48 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02}
49#define UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT \
50 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
51 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03}
52#define UVC_GUID_UVC_PROCESSING \
53 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
54 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01}
55#define UVC_GUID_UVC_SELECTOR \
56 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
57 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02}
58
59#define UVC_GUID_FORMAT_MJPEG \
60 { 'M', 'J', 'P', 'G', 0x00, 0x00, 0x10, 0x00, \
61 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
62#define UVC_GUID_FORMAT_YUY2 \
63 { 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, \
64 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
65#define UVC_GUID_FORMAT_YUY2_ISIGHT \
66 { 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, \
67 0x80, 0x00, 0x00, 0x00, 0x00, 0x38, 0x9b, 0x71}
68#define UVC_GUID_FORMAT_NV12 \
69 { 'N', 'V', '1', '2', 0x00, 0x00, 0x10, 0x00, \
70 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
71#define UVC_GUID_FORMAT_YV12 \
72 { 'Y', 'V', '1', '2', 0x00, 0x00, 0x10, 0x00, \
73 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
74#define UVC_GUID_FORMAT_I420 \
75 { 'I', '4', '2', '0', 0x00, 0x00, 0x10, 0x00, \
76 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
77#define UVC_GUID_FORMAT_UYVY \
78 { 'U', 'Y', 'V', 'Y', 0x00, 0x00, 0x10, 0x00, \
79 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
80#define UVC_GUID_FORMAT_Y800 \
81 { 'Y', '8', '0', '0', 0x00, 0x00, 0x10, 0x00, \
82 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
83#define UVC_GUID_FORMAT_Y8 \
84 { 'Y', '8', ' ', ' ', 0x00, 0x00, 0x10, 0x00, \
85 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
86#define UVC_GUID_FORMAT_Y10 \
87 { 'Y', '1', '0', ' ', 0x00, 0x00, 0x10, 0x00, \
88 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
89#define UVC_GUID_FORMAT_Y12 \
90 { 'Y', '1', '2', ' ', 0x00, 0x00, 0x10, 0x00, \
91 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
92#define UVC_GUID_FORMAT_Y16 \
93 { 'Y', '1', '6', ' ', 0x00, 0x00, 0x10, 0x00, \
94 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
95#define UVC_GUID_FORMAT_BY8 \
96 { 'B', 'Y', '8', ' ', 0x00, 0x00, 0x10, 0x00, \
97 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
98#define UVC_GUID_FORMAT_BA81 \
99 { 'B', 'A', '8', '1', 0x00, 0x00, 0x10, 0x00, \
100 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
101#define UVC_GUID_FORMAT_GBRG \
102 { 'G', 'B', 'R', 'G', 0x00, 0x00, 0x10, 0x00, \
103 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
104#define UVC_GUID_FORMAT_GRBG \
105 { 'G', 'R', 'B', 'G', 0x00, 0x00, 0x10, 0x00, \
106 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
107#define UVC_GUID_FORMAT_RGGB \
108 { 'R', 'G', 'G', 'B', 0x00, 0x00, 0x10, 0x00, \
109 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
110#define UVC_GUID_FORMAT_BG16 \
111 { 'B', 'G', '1', '6', 0x00, 0x00, 0x10, 0x00, \
112 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
113#define UVC_GUID_FORMAT_GB16 \
114 { 'G', 'B', '1', '6', 0x00, 0x00, 0x10, 0x00, \
115 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
116#define UVC_GUID_FORMAT_RG16 \
117 { 'R', 'G', '1', '6', 0x00, 0x00, 0x10, 0x00, \
118 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
119#define UVC_GUID_FORMAT_GR16 \
120 { 'G', 'R', '1', '6', 0x00, 0x00, 0x10, 0x00, \
121 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
122#define UVC_GUID_FORMAT_RGBP \
123 { 'R', 'G', 'B', 'P', 0x00, 0x00, 0x10, 0x00, \
124 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
125#define UVC_GUID_FORMAT_BGR3 \
126 { 0x7d, 0xeb, 0x36, 0xe4, 0x4f, 0x52, 0xce, 0x11, \
127 0x9f, 0x53, 0x00, 0x20, 0xaf, 0x0b, 0xa7, 0x70}
128#define UVC_GUID_FORMAT_M420 \
129 { 'M', '4', '2', '0', 0x00, 0x00, 0x10, 0x00, \
130 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
131
132#define UVC_GUID_FORMAT_H264 \
133 { 'H', '2', '6', '4', 0x00, 0x00, 0x10, 0x00, \
134 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
135#define UVC_GUID_FORMAT_Y8I \
136 { 'Y', '8', 'I', ' ', 0x00, 0x00, 0x10, 0x00, \
137 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
138#define UVC_GUID_FORMAT_Y12I \
139 { 'Y', '1', '2', 'I', 0x00, 0x00, 0x10, 0x00, \
140 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
141#define UVC_GUID_FORMAT_Z16 \
142 { 'Z', '1', '6', ' ', 0x00, 0x00, 0x10, 0x00, \
143 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
144#define UVC_GUID_FORMAT_RW10 \
145 { 'R', 'W', '1', '0', 0x00, 0x00, 0x10, 0x00, \
146 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
147#define UVC_GUID_FORMAT_INVZ \
148 { 'I', 'N', 'V', 'Z', 0x90, 0x2d, 0x58, 0x4a, \
149 0x92, 0x0b, 0x77, 0x3f, 0x1f, 0x2c, 0x55, 0x6b}
150#define UVC_GUID_FORMAT_INZI \
151 { 'I', 'N', 'Z', 'I', 0x66, 0x1a, 0x42, 0xa2, \
152 0x90, 0x65, 0xd0, 0x18, 0x14, 0xa8, 0xef, 0x8a}
153#define UVC_GUID_FORMAT_INVI \
154 { 'I', 'N', 'V', 'I', 0xdb, 0x57, 0x49, 0x5e, \
155 0x8e, 0x3f, 0xf4, 0x79, 0x53, 0x2b, 0x94, 0x6f}
156
157#define UVC_GUID_FORMAT_D3DFMT_L8 \
158 {0x32, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, \
159 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
160
161
162
163
164
165
166#define DRIVER_VERSION "1.1.1"
167
168
169#define UVC_URBS 5
170
171#define UVC_MAX_PACKETS 32
172
173#define UVC_MAX_STATUS_SIZE 16
174
175#define UVC_CTRL_CONTROL_TIMEOUT 500
176#define UVC_CTRL_STREAMING_TIMEOUT 5000
177
178
179#define UVC_MAX_CONTROL_MAPPINGS 1024
180#define UVC_MAX_CONTROL_MENU_ENTRIES 32
181
182
183#define UVC_QUIRK_STATUS_INTERVAL 0x00000001
184#define UVC_QUIRK_PROBE_MINMAX 0x00000002
185#define UVC_QUIRK_PROBE_EXTRAFIELDS 0x00000004
186#define UVC_QUIRK_BUILTIN_ISIGHT 0x00000008
187#define UVC_QUIRK_STREAM_NO_FID 0x00000010
188#define UVC_QUIRK_IGNORE_SELECTOR_UNIT 0x00000020
189#define UVC_QUIRK_FIX_BANDWIDTH 0x00000080
190#define UVC_QUIRK_PROBE_DEF 0x00000100
191#define UVC_QUIRK_RESTRICT_FRAME_RATE 0x00000200
192#define UVC_QUIRK_RESTORE_CTRLS_ON_INIT 0x00000400
193#define UVC_QUIRK_FORCE_Y8 0x00000800
194
195
196#define UVC_FMT_FLAG_COMPRESSED 0x00000001
197#define UVC_FMT_FLAG_STREAM 0x00000002
198
199
200
201
202
203struct uvc_device;
204
205
206
207
208struct uvc_control_info {
209 struct list_head mappings;
210
211 u8 entity[16];
212 u8 index;
213 u8 selector;
214
215 u16 size;
216 u32 flags;
217};
218
219struct uvc_control_mapping {
220 struct list_head list;
221 struct list_head ev_subs;
222
223 u32 id;
224 u8 name[32];
225 u8 entity[16];
226 u8 selector;
227
228 u8 size;
229 u8 offset;
230 enum v4l2_ctrl_type v4l2_type;
231 u32 data_type;
232
233 struct uvc_menu_info *menu_info;
234 u32 menu_count;
235
236 u32 master_id;
237 s32 master_manual;
238 u32 slave_ids[2];
239
240 s32 (*get)(struct uvc_control_mapping *mapping, u8 query,
241 const u8 *data);
242 void (*set)(struct uvc_control_mapping *mapping, s32 value,
243 u8 *data);
244};
245
246struct uvc_control {
247 struct uvc_entity *entity;
248 struct uvc_control_info info;
249
250 u8 index;
251
252 u8 dirty:1,
253 loaded:1,
254 modified:1,
255 cached:1,
256 initialized:1;
257
258 u8 *uvc_data;
259};
260
261struct uvc_format_desc {
262 char *name;
263 u8 guid[16];
264 u32 fcc;
265};
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282#define UVC_ENTITY_FLAG_DEFAULT (1 << 0)
283
284struct uvc_entity {
285 struct list_head list;
286 struct list_head chain;
287
288 unsigned int flags;
289
290 u8 id;
291 u16 type;
292 char name[64];
293
294
295 struct video_device *vdev;
296 struct v4l2_subdev subdev;
297 unsigned int num_pads;
298 unsigned int num_links;
299 struct media_pad *pads;
300
301 union {
302 struct {
303 u16 wObjectiveFocalLengthMin;
304 u16 wObjectiveFocalLengthMax;
305 u16 wOcularFocalLength;
306 u8 bControlSize;
307 u8 *bmControls;
308 } camera;
309
310 struct {
311 u8 bControlSize;
312 u8 *bmControls;
313 u8 bTransportModeSize;
314 u8 *bmTransportModes;
315 } media;
316
317 struct {
318 } output;
319
320 struct {
321 u16 wMaxMultiplier;
322 u8 bControlSize;
323 u8 *bmControls;
324 u8 bmVideoStandards;
325 } processing;
326
327 struct {
328 } selector;
329
330 struct {
331 u8 guidExtensionCode[16];
332 u8 bNumControls;
333 u8 bControlSize;
334 u8 *bmControls;
335 u8 *bmControlsType;
336 } extension;
337 };
338
339 u8 bNrInPins;
340 u8 *baSourceID;
341
342 unsigned int ncontrols;
343 struct uvc_control *controls;
344};
345
346struct uvc_frame {
347 u8 bFrameIndex;
348 u8 bmCapabilities;
349 u16 wWidth;
350 u16 wHeight;
351 u32 dwMinBitRate;
352 u32 dwMaxBitRate;
353 u32 dwMaxVideoFrameBufferSize;
354 u8 bFrameIntervalType;
355 u32 dwDefaultFrameInterval;
356 u32 *dwFrameInterval;
357};
358
359struct uvc_format {
360 u8 type;
361 u8 index;
362 u8 bpp;
363 u8 colorspace;
364 u32 fcc;
365 u32 flags;
366
367 char name[32];
368
369 unsigned int nframes;
370 struct uvc_frame *frame;
371};
372
373struct uvc_streaming_header {
374 u8 bNumFormats;
375 u8 bEndpointAddress;
376 u8 bTerminalLink;
377 u8 bControlSize;
378 u8 *bmaControls;
379
380 u8 bmInfo;
381 u8 bStillCaptureMethod;
382 u8 bTriggerSupport;
383 u8 bTriggerUsage;
384};
385
386enum uvc_buffer_state {
387 UVC_BUF_STATE_IDLE = 0,
388 UVC_BUF_STATE_QUEUED = 1,
389 UVC_BUF_STATE_ACTIVE = 2,
390 UVC_BUF_STATE_READY = 3,
391 UVC_BUF_STATE_DONE = 4,
392 UVC_BUF_STATE_ERROR = 5,
393};
394
395struct uvc_buffer {
396 struct vb2_v4l2_buffer buf;
397 struct list_head queue;
398
399 enum uvc_buffer_state state;
400 unsigned int error;
401
402 void *mem;
403 unsigned int length;
404 unsigned int bytesused;
405
406 u32 pts;
407};
408
409#define UVC_QUEUE_DISCONNECTED (1 << 0)
410#define UVC_QUEUE_DROP_CORRUPTED (1 << 1)
411
412struct uvc_video_queue {
413 struct vb2_queue queue;
414 struct mutex mutex;
415
416 unsigned int flags;
417 unsigned int buf_used;
418
419 spinlock_t irqlock;
420 struct list_head irqqueue;
421};
422
423struct uvc_video_chain {
424 struct uvc_device *dev;
425 struct list_head list;
426
427 struct list_head entities;
428 struct uvc_entity *processing;
429 struct uvc_entity *selector;
430
431 struct mutex ctrl_mutex;
432
433 struct v4l2_prio_state prio;
434 u32 caps;
435};
436
437struct uvc_stats_frame {
438 unsigned int size;
439 unsigned int first_data;
440
441 unsigned int nb_packets;
442 unsigned int nb_empty;
443 unsigned int nb_invalid;
444 unsigned int nb_errors;
445
446 unsigned int nb_pts;
447 unsigned int nb_pts_diffs;
448 unsigned int last_pts_diff;
449 bool has_initial_pts;
450 bool has_early_pts;
451 u32 pts;
452
453 unsigned int nb_scr;
454 unsigned int nb_scr_diffs;
455 u16 scr_sof;
456 u32 scr_stc;
457};
458
459struct uvc_stats_stream {
460 ktime_t start_ts;
461 ktime_t stop_ts;
462
463 unsigned int nb_frames;
464
465 unsigned int nb_packets;
466 unsigned int nb_empty;
467 unsigned int nb_invalid;
468 unsigned int nb_errors;
469
470 unsigned int nb_pts_constant;
471 unsigned int nb_pts_early;
472 unsigned int nb_pts_initial;
473
474 unsigned int nb_scr_count_ok;
475 unsigned int nb_scr_diffs_ok;
476 unsigned int scr_sof_count;
477 unsigned int scr_sof;
478 unsigned int min_sof;
479 unsigned int max_sof;
480};
481
482#define UVC_METATADA_BUF_SIZE 1024
483
484struct uvc_streaming {
485 struct list_head list;
486 struct uvc_device *dev;
487 struct video_device vdev;
488 struct uvc_video_chain *chain;
489 atomic_t active;
490
491 struct usb_interface *intf;
492 int intfnum;
493 u16 maxpsize;
494
495 struct uvc_streaming_header header;
496 enum v4l2_buf_type type;
497
498 unsigned int nformats;
499 struct uvc_format *format;
500
501 struct uvc_streaming_control ctrl;
502 struct uvc_format *def_format;
503 struct uvc_format *cur_format;
504 struct uvc_frame *cur_frame;
505
506
507
508
509 struct mutex mutex;
510
511
512 unsigned int frozen : 1;
513 struct uvc_video_queue queue;
514 void (*decode) (struct urb *urb, struct uvc_streaming *video,
515 struct uvc_buffer *buf, struct uvc_buffer *meta_buf);
516
517 struct {
518 struct video_device vdev;
519 struct uvc_video_queue queue;
520 u32 format;
521 } meta;
522
523
524 struct {
525 u8 header[256];
526 unsigned int header_size;
527 int skip_payload;
528 u32 payload_size;
529 u32 max_payload_size;
530 } bulk;
531
532 struct urb *urb[UVC_URBS];
533 char *urb_buffer[UVC_URBS];
534 dma_addr_t urb_dma[UVC_URBS];
535 unsigned int urb_size;
536
537 u32 sequence;
538 u8 last_fid;
539
540
541 struct dentry *debugfs_dir;
542 struct {
543 struct uvc_stats_frame frame;
544 struct uvc_stats_stream stream;
545 } stats;
546
547
548 struct uvc_clock {
549 struct uvc_clock_sample {
550 u32 dev_stc;
551 u16 dev_sof;
552 u16 host_sof;
553 ktime_t host_time;
554 } *samples;
555
556 unsigned int head;
557 unsigned int count;
558 unsigned int size;
559
560 u16 last_sof;
561 u16 sof_offset;
562
563 u8 last_scr[6];
564
565 spinlock_t lock;
566 } clock;
567};
568
569struct uvc_device {
570 struct usb_device *udev;
571 struct usb_interface *intf;
572 unsigned long warnings;
573 u32 quirks;
574 u32 meta_format;
575 int intfnum;
576 char name[32];
577
578 struct mutex lock;
579 unsigned int users;
580 atomic_t nmappings;
581
582
583#ifdef CONFIG_MEDIA_CONTROLLER
584 struct media_device mdev;
585#endif
586 struct v4l2_device vdev;
587 u16 uvc_version;
588 u32 clock_frequency;
589
590 struct list_head entities;
591 struct list_head chains;
592
593
594 struct list_head streams;
595 struct kref ref;
596
597
598 struct usb_host_endpoint *int_ep;
599 struct urb *int_urb;
600 u8 *status;
601 struct input_dev *input;
602 char input_phys[64];
603};
604
605enum uvc_handle_state {
606 UVC_HANDLE_PASSIVE = 0,
607 UVC_HANDLE_ACTIVE = 1,
608};
609
610struct uvc_fh {
611 struct v4l2_fh vfh;
612 struct uvc_video_chain *chain;
613 struct uvc_streaming *stream;
614 enum uvc_handle_state state;
615};
616
617struct uvc_driver {
618 struct usb_driver driver;
619};
620
621
622
623
624
625#define UVC_TRACE_PROBE (1 << 0)
626#define UVC_TRACE_DESCR (1 << 1)
627#define UVC_TRACE_CONTROL (1 << 2)
628#define UVC_TRACE_FORMAT (1 << 3)
629#define UVC_TRACE_CAPTURE (1 << 4)
630#define UVC_TRACE_CALLS (1 << 5)
631#define UVC_TRACE_FRAME (1 << 7)
632#define UVC_TRACE_SUSPEND (1 << 8)
633#define UVC_TRACE_STATUS (1 << 9)
634#define UVC_TRACE_VIDEO (1 << 10)
635#define UVC_TRACE_STATS (1 << 11)
636#define UVC_TRACE_CLOCK (1 << 12)
637
638#define UVC_WARN_MINMAX 0
639#define UVC_WARN_PROBE_DEF 1
640#define UVC_WARN_XU_GET_RES 2
641
642extern unsigned int uvc_clock_param;
643extern unsigned int uvc_no_drop_param;
644extern unsigned int uvc_trace_param;
645extern unsigned int uvc_timeout_param;
646extern unsigned int uvc_hw_timestamps_param;
647
648#define uvc_trace(flag, msg...) \
649 do { \
650 if (uvc_trace_param & flag) \
651 printk(KERN_DEBUG "uvcvideo: " msg); \
652 } while (0)
653
654#define uvc_warn_once(dev, warn, msg...) \
655 do { \
656 if (!test_and_set_bit(warn, &dev->warnings)) \
657 printk(KERN_INFO "uvcvideo: " msg); \
658 } while (0)
659
660#define uvc_printk(level, msg...) \
661 printk(level "uvcvideo: " msg)
662
663
664
665
666
667
668extern struct uvc_driver uvc_driver;
669
670struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id);
671
672
673int uvc_queue_init(struct uvc_video_queue *queue, enum v4l2_buf_type type,
674 int drop_corrupted);
675void uvc_queue_release(struct uvc_video_queue *queue);
676int uvc_request_buffers(struct uvc_video_queue *queue,
677 struct v4l2_requestbuffers *rb);
678int uvc_query_buffer(struct uvc_video_queue *queue,
679 struct v4l2_buffer *v4l2_buf);
680int uvc_create_buffers(struct uvc_video_queue *queue,
681 struct v4l2_create_buffers *v4l2_cb);
682int uvc_queue_buffer(struct uvc_video_queue *queue,
683 struct v4l2_buffer *v4l2_buf);
684int uvc_export_buffer(struct uvc_video_queue *queue,
685 struct v4l2_exportbuffer *exp);
686int uvc_dequeue_buffer(struct uvc_video_queue *queue,
687 struct v4l2_buffer *v4l2_buf, int nonblocking);
688int uvc_queue_streamon(struct uvc_video_queue *queue, enum v4l2_buf_type type);
689int uvc_queue_streamoff(struct uvc_video_queue *queue, enum v4l2_buf_type type);
690void uvc_queue_cancel(struct uvc_video_queue *queue, int disconnect);
691struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue,
692 struct uvc_buffer *buf);
693int uvc_queue_mmap(struct uvc_video_queue *queue,
694 struct vm_area_struct *vma);
695__poll_t uvc_queue_poll(struct uvc_video_queue *queue, struct file *file,
696 poll_table *wait);
697#ifndef CONFIG_MMU
698unsigned long uvc_queue_get_unmapped_area(struct uvc_video_queue *queue,
699 unsigned long pgoff);
700#endif
701int uvc_queue_allocated(struct uvc_video_queue *queue);
702static inline int uvc_queue_streaming(struct uvc_video_queue *queue)
703{
704 return vb2_is_streaming(&queue->queue);
705}
706
707
708extern const struct v4l2_ioctl_ops uvc_ioctl_ops;
709extern const struct v4l2_file_operations uvc_fops;
710
711
712int uvc_mc_register_entities(struct uvc_video_chain *chain);
713void uvc_mc_cleanup_entity(struct uvc_entity *entity);
714
715
716int uvc_video_init(struct uvc_streaming *stream);
717int uvc_video_suspend(struct uvc_streaming *stream);
718int uvc_video_resume(struct uvc_streaming *stream, int reset);
719int uvc_video_enable(struct uvc_streaming *stream, int enable);
720int uvc_probe_video(struct uvc_streaming *stream,
721 struct uvc_streaming_control *probe);
722int uvc_query_ctrl(struct uvc_device *dev, u8 query, u8 unit,
723 u8 intfnum, u8 cs, void *data, u16 size);
724void uvc_video_clock_update(struct uvc_streaming *stream,
725 struct vb2_v4l2_buffer *vbuf,
726 struct uvc_buffer *buf);
727int uvc_meta_register(struct uvc_streaming *stream);
728
729int uvc_register_video_device(struct uvc_device *dev,
730 struct uvc_streaming *stream,
731 struct video_device *vdev,
732 struct uvc_video_queue *queue,
733 enum v4l2_buf_type type,
734 const struct v4l2_file_operations *fops,
735 const struct v4l2_ioctl_ops *ioctl_ops);
736
737
738int uvc_status_init(struct uvc_device *dev);
739void uvc_status_cleanup(struct uvc_device *dev);
740int uvc_status_start(struct uvc_device *dev, gfp_t flags);
741void uvc_status_stop(struct uvc_device *dev);
742
743
744extern const struct v4l2_subscribed_event_ops uvc_ctrl_sub_ev_ops;
745
746int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
747 struct v4l2_queryctrl *v4l2_ctrl);
748int uvc_query_v4l2_menu(struct uvc_video_chain *chain,
749 struct v4l2_querymenu *query_menu);
750
751int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
752 const struct uvc_control_mapping *mapping);
753int uvc_ctrl_init_device(struct uvc_device *dev);
754void uvc_ctrl_cleanup_device(struct uvc_device *dev);
755int uvc_ctrl_restore_values(struct uvc_device *dev);
756
757int uvc_ctrl_begin(struct uvc_video_chain *chain);
758int __uvc_ctrl_commit(struct uvc_fh *handle, int rollback,
759 const struct v4l2_ext_control *xctrls,
760 unsigned int xctrls_count);
761static inline int uvc_ctrl_commit(struct uvc_fh *handle,
762 const struct v4l2_ext_control *xctrls,
763 unsigned int xctrls_count)
764{
765 return __uvc_ctrl_commit(handle, 0, xctrls, xctrls_count);
766}
767static inline int uvc_ctrl_rollback(struct uvc_fh *handle)
768{
769 return __uvc_ctrl_commit(handle, 1, NULL, 0);
770}
771
772int uvc_ctrl_get(struct uvc_video_chain *chain, struct v4l2_ext_control *xctrl);
773int uvc_ctrl_set(struct uvc_video_chain *chain, struct v4l2_ext_control *xctrl);
774
775int uvc_xu_ctrl_query(struct uvc_video_chain *chain,
776 struct uvc_xu_control_query *xqry);
777
778
779void uvc_simplify_fraction(u32 *numerator, u32 *denominator,
780 unsigned int n_terms, unsigned int threshold);
781u32 uvc_fraction_to_interval(u32 numerator, u32 denominator);
782struct usb_host_endpoint *uvc_find_endpoint(struct usb_host_interface *alts,
783 u8 epaddr);
784
785
786void uvc_video_decode_isight(struct urb *urb, struct uvc_streaming *stream,
787 struct uvc_buffer *buf,
788 struct uvc_buffer *meta_buf);
789
790
791void uvc_debugfs_init(void);
792void uvc_debugfs_cleanup(void);
793void uvc_debugfs_init_stream(struct uvc_streaming *stream);
794void uvc_debugfs_cleanup_stream(struct uvc_streaming *stream);
795
796size_t uvc_video_stats_dump(struct uvc_streaming *stream, char *buf,
797 size_t size);
798
799#endif
800
