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Merge branch 'x86-mem-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[net-next-2.6.git] / drivers / media / video / uvc / uvcvideo.h
CommitLineData
c0efd232
LP		 1#ifndef _USB_VIDEO_H_
2#define _USB_VIDEO_H_
3
4#include <linux/kernel.h>
5#include <linux/videodev2.h>
6
c0efd232
LP		 7/*
8 * Dynamic controls
9 */
10
11/* Data types for UVC control data */
12#define UVC_CTRL_DATA_TYPE_RAW 0
13#define UVC_CTRL_DATA_TYPE_SIGNED 1
14#define UVC_CTRL_DATA_TYPE_UNSIGNED 2
15#define UVC_CTRL_DATA_TYPE_BOOLEAN 3
16#define UVC_CTRL_DATA_TYPE_ENUM 4
17#define UVC_CTRL_DATA_TYPE_BITMASK 5
18
19/* Control flags */
20#define UVC_CONTROL_SET_CUR (1 << 0)
21#define UVC_CONTROL_GET_CUR (1 << 1)
22#define UVC_CONTROL_GET_MIN (1 << 2)
23#define UVC_CONTROL_GET_MAX (1 << 3)
24#define UVC_CONTROL_GET_RES (1 << 4)
25#define UVC_CONTROL_GET_DEF (1 << 5)
26/* Control should be saved at suspend and restored at resume. */
27#define UVC_CONTROL_RESTORE (1 << 6)
28/* Control can be updated by the camera. */
29#define UVC_CONTROL_AUTO_UPDATE (1 << 7)
561474c2
LP		 30/* Control is an extension unit control. */
31#define UVC_CONTROL_EXTENSION (1 << 8)
c0efd232
LP		 32
33#define UVC_CONTROL_GET_RANGE (UVC_CONTROL_GET_CUR | UVC_CONTROL_GET_MIN | \
34 UVC_CONTROL_GET_MAX | UVC_CONTROL_GET_RES | \
35 UVC_CONTROL_GET_DEF)
36
37struct uvc_xu_control_info {
38 __u8 entity[16];
39 __u8 index;
40 __u8 selector;
41 __u16 size;
42 __u32 flags;
43};
44
561474c2
LP		 45struct uvc_menu_info {
46 __u32 value;
47 __u8 name[32];
48};
49
50struct uvc_xu_control_mapping_old {
51 __u8 reserved[64];
52};
53
c0efd232
LP		 54struct uvc_xu_control_mapping {
55 __u32 id;
56 __u8 name[32];
57 __u8 entity[16];
58 __u8 selector;
59
60 __u8 size;
61 __u8 offset;
62 enum v4l2_ctrl_type v4l2_type;
63 __u32 data_type;
561474c2
LP		 64
65 struct uvc_menu_info __user *menu_info;
66 __u32 menu_count;
67
68 __u32 reserved[4];
c0efd232
LP		 69};
70
71struct uvc_xu_control {
72 __u8 unit;
73 __u8 selector;
74 __u16 size;
75 __u8 __user *data;
76};
77
78#define UVCIOC_CTRL_ADD _IOW('U', 1, struct uvc_xu_control_info)
561474c2 79#define UVCIOC_CTRL_MAP_OLD _IOWR('U', 2, struct uvc_xu_control_mapping_old)
c0efd232
LP		 80#define UVCIOC_CTRL_MAP _IOWR('U', 2, struct uvc_xu_control_mapping)
81#define UVCIOC_CTRL_GET _IOWR('U', 3, struct uvc_xu_control)
82#define UVCIOC_CTRL_SET _IOW('U', 4, struct uvc_xu_control)
83
84#ifdef __KERNEL__
85
86#include <linux/poll.h>
de05f634 87#include <linux/usb/video.h>
c0efd232
LP		 88
89/* --------------------------------------------------------------------------
90 * UVC constants
91 */
92
c0efd232
LP		 93#define UVC_TERM_INPUT 0x0000
94#define UVC_TERM_OUTPUT 0x8000
6241d8ca 95#define UVC_TERM_DIRECTION(term) ((term)->type & 0x8000)
c0efd232
LP		 96
97#define UVC_ENTITY_TYPE(entity) ((entity)->type & 0x7fff)
98#define UVC_ENTITY_IS_UNIT(entity) (((entity)->type & 0xff00) == 0)
99#define UVC_ENTITY_IS_TERM(entity) (((entity)->type & 0xff00) != 0)
100#define UVC_ENTITY_IS_ITERM(entity) \
8e113595
LP		 101 (UVC_ENTITY_IS_TERM(entity) && \
102 ((entity)->type & 0x8000) == UVC_TERM_INPUT)
c0efd232 103#define UVC_ENTITY_IS_OTERM(entity) \
8e113595
LP		 104 (UVC_ENTITY_IS_TERM(entity) && \
105 ((entity)->type & 0x8000) == UVC_TERM_OUTPUT)
c0efd232 106
c0efd232
LP		 107
108/* ------------------------------------------------------------------------
109 * GUIDs
110 */
111#define UVC_GUID_UVC_CAMERA \
112 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
113 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}
114#define UVC_GUID_UVC_OUTPUT \
115 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
116 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02}
117#define UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT \
118 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
119 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03}
120#define UVC_GUID_UVC_PROCESSING \
121 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
122 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01}
123#define UVC_GUID_UVC_SELECTOR \
124 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
125 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02}
126
c0efd232
LP		 127#define UVC_GUID_FORMAT_MJPEG \
128 { 'M', 'J', 'P', 'G', 0x00, 0x00, 0x10, 0x00, \
129 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
130#define UVC_GUID_FORMAT_YUY2 \
131 { 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, \
132 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
68f194e0
DR		 133#define UVC_GUID_FORMAT_YUY2_ISIGHT \
134 { 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, \
135 0x80, 0x00, 0x00, 0x00, 0x00, 0x38, 0x9b, 0x71}
c0efd232
LP		 136#define UVC_GUID_FORMAT_NV12 \
137 { 'N', 'V', '1', '2', 0x00, 0x00, 0x10, 0x00, \
138 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
139#define UVC_GUID_FORMAT_YV12 \
140 { 'Y', 'V', '1', '2', 0x00, 0x00, 0x10, 0x00, \
141 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
142#define UVC_GUID_FORMAT_I420 \
143 { 'I', '4', '2', '0', 0x00, 0x00, 0x10, 0x00, \
144 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
145#define UVC_GUID_FORMAT_UYVY \
146 { 'U', 'Y', 'V', 'Y', 0x00, 0x00, 0x10, 0x00, \
147 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
148#define UVC_GUID_FORMAT_Y800 \
149 { 'Y', '8', '0', '0', 0x00, 0x00, 0x10, 0x00, \
150 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
61421206
LP		 151#define UVC_GUID_FORMAT_Y16 \
152 { 'Y', '1', '6', ' ', 0x00, 0x00, 0x10, 0x00, \
153 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
c0efd232
LP		 154#define UVC_GUID_FORMAT_BY8 \
155 { 'B', 'Y', '8', ' ', 0x00, 0x00, 0x10, 0x00, \
156 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
157
c0efd232
LP		 158/* ------------------------------------------------------------------------
159 * Driver specific constants.
160 */
161
162#define DRIVER_VERSION_NUMBER KERNEL_VERSION(0, 1, 0)
163
164/* Number of isochronous URBs. */
165#define UVC_URBS 5
efdc8a95
LP		 166/* Maximum number of packets per URB. */
167#define UVC_MAX_PACKETS 32
c0efd232
LP		 168/* Maximum number of video buffers. */
169#define UVC_MAX_VIDEO_BUFFERS 32
a31a4055
ML		 170/* Maximum status buffer size in bytes of interrupt URB. */
171#define UVC_MAX_STATUS_SIZE 16
c0efd232
LP		 172
173#define UVC_CTRL_CONTROL_TIMEOUT 300
56d15cd3 174#define UVC_CTRL_STREAMING_TIMEOUT 5000
c0efd232
LP		 175
176/* Devices quirks */
177#define UVC_QUIRK_STATUS_INTERVAL 0x00000001
178#define UVC_QUIRK_PROBE_MINMAX 0x00000002
179#define UVC_QUIRK_PROBE_EXTRAFIELDS 0x00000004
180#define UVC_QUIRK_BUILTIN_ISIGHT 0x00000008
181#define UVC_QUIRK_STREAM_NO_FID 0x00000010
182#define UVC_QUIRK_IGNORE_SELECTOR_UNIT 0x00000020
50144aee 183#define UVC_QUIRK_FIX_BANDWIDTH 0x00000080
bab6f66c 184#define UVC_QUIRK_PROBE_DEF 0x00000100
86d8b6ab 185#define UVC_QUIRK_RESTRICT_FRAME_RATE 0x00000200
c0efd232
LP		 186
187/* Format flags */
188#define UVC_FMT_FLAG_COMPRESSED 0x00000001
189#define UVC_FMT_FLAG_STREAM 0x00000002
190
191/* ------------------------------------------------------------------------
192 * Structures.
193 */
194
195struct uvc_device;
196
197/* TODO: Put the most frequently accessed fields at the beginning of
198 * structures to maximize cache efficiency.
199 */
c0efd232
LP		 200struct uvc_control_info {
201 struct list_head list;
202 struct list_head mappings;
203
204 __u8 entity[16];
205 __u8 index;
206 __u8 selector;
207
208 __u16 size;
209 __u32 flags;
210};
211
212struct uvc_control_mapping {
213 struct list_head list;
214
215 struct uvc_control_info *ctrl;
216
217 __u32 id;
218 __u8 name[32];
219 __u8 entity[16];
220 __u8 selector;
221
222 __u8 size;
223 __u8 offset;
224 enum v4l2_ctrl_type v4l2_type;
225 __u32 data_type;
226
227 struct uvc_menu_info *menu_info;
228 __u32 menu_count;
9768352a
LP		 229
230 __s32 (*get) (struct uvc_control_mapping *mapping, __u8 query,
231 const __u8 *data);
232 void (*set) (struct uvc_control_mapping *mapping, __s32 value,
233 __u8 *data);
c0efd232
LP		 234};
235
236struct uvc_control {
237 struct uvc_entity *entity;
238 struct uvc_control_info *info;
239
240 __u8 index; /* Used to match the uvc_control entry with a
241 uvc_control_info. */
242 __u8 dirty : 1,
243 loaded : 1,
59529081
LP		 244 modified : 1,
245 cached : 1;
c0efd232 246
b30ece53
LP		 247 __u8 *uvc_data;
248 __u8 *uvc_info;
c0efd232
LP		 249};
250
251struct uvc_format_desc {
252 char *name;
253 __u8 guid[16];
254 __u32 fcc;
255};
256
257/* The term 'entity' refers to both UVC units and UVC terminals.
258 *
259 * The type field is either the terminal type (wTerminalType in the terminal
260 * descriptor), or the unit type (bDescriptorSubtype in the unit descriptor).
261 * As the bDescriptorSubtype field is one byte long, the type value will
262 * always have a null MSB for units. All terminal types defined by the UVC
263 * specification have a non-null MSB, so it is safe to use the MSB to
264 * differentiate between units and terminals as long as the descriptor parsing
265 * code makes sure terminal types have a non-null MSB.
266 *
267 * For terminals, the type's most significant bit stores the terminal
268 * direction (either UVC_TERM_INPUT or UVC_TERM_OUTPUT). The type field should
269 * always be accessed with the UVC_ENTITY_* macros and never directly.
270 */
271
272struct uvc_entity {
273 struct list_head list; /* Entity as part of a UVC device. */
274 struct list_head chain; /* Entity as part of a video device
275 * chain. */
276 __u8 id;
277 __u16 type;
278 char name[64];
279
280 union {
281 struct {
282 __u16 wObjectiveFocalLengthMin;
283 __u16 wObjectiveFocalLengthMax;
284 __u16 wOcularFocalLength;
285 __u8 bControlSize;
286 __u8 *bmControls;
287 } camera;
288
289 struct {
290 __u8 bControlSize;
291 __u8 *bmControls;
292 __u8 bTransportModeSize;
293 __u8 *bmTransportModes;
294 } media;
295
296 struct {
c0efd232
LP		 297 } output;
298
299 struct {
c0efd232
LP		 300 __u16 wMaxMultiplier;
301 __u8 bControlSize;
302 __u8 *bmControls;
303 __u8 bmVideoStandards;
304 } processing;
305
306 struct {
c0efd232
LP		 307 } selector;
308
309 struct {
310 __u8 guidExtensionCode[16];
311 __u8 bNumControls;
c0efd232
LP		 312 __u8 bControlSize;
313 __u8 *bmControls;
314 __u8 *bmControlsType;
315 } extension;
316 };
317
8ca5a639
LP		 318 __u8 bNrInPins;
319 __u8 *baSourceID;
320
c0efd232
LP		 321 unsigned int ncontrols;
322 struct uvc_control *controls;
323};
324
325struct uvc_frame {
326 __u8 bFrameIndex;
327 __u8 bmCapabilities;
328 __u16 wWidth;
329 __u16 wHeight;
330 __u32 dwMinBitRate;
331 __u32 dwMaxBitRate;
332 __u32 dwMaxVideoFrameBufferSize;
333 __u8 bFrameIntervalType;
334 __u32 dwDefaultFrameInterval;
335 __u32 *dwFrameInterval;
336};
337
338struct uvc_format {
339 __u8 type;
340 __u8 index;
341 __u8 bpp;
342 __u8 colorspace;
343 __u32 fcc;
344 __u32 flags;
345
346 char name[32];
347
348 unsigned int nframes;
349 struct uvc_frame *frame;
350};
351
352struct uvc_streaming_header {
353 __u8 bNumFormats;
354 __u8 bEndpointAddress;
355 __u8 bTerminalLink;
356 __u8 bControlSize;
357 __u8 *bmaControls;
358 /* The following fields are used by input headers only. */
359 __u8 bmInfo;
360 __u8 bStillCaptureMethod;
361 __u8 bTriggerSupport;
362 __u8 bTriggerUsage;
363};
364
c0efd232 365enum uvc_buffer_state {
2c2d264b
LP		 366 UVC_BUF_STATE_IDLE = 0,
367 UVC_BUF_STATE_QUEUED = 1,
368 UVC_BUF_STATE_ACTIVE = 2,
d7c0d439
LP		 369 UVC_BUF_STATE_READY = 3,
370 UVC_BUF_STATE_DONE = 4,
371 UVC_BUF_STATE_ERROR = 5,
c0efd232
LP		 372};
373
374struct uvc_buffer {
375 unsigned long vma_use_count;
376 struct list_head stream;
377
378 /* Touched by interrupt handler. */
379 struct v4l2_buffer buf;
380 struct list_head queue;
381 wait_queue_head_t wait;
382 enum uvc_buffer_state state;
9bde9f26 383 unsigned int error;
c0efd232
LP		 384};
385
386#define UVC_QUEUE_STREAMING (1 << 0)
387#define UVC_QUEUE_DISCONNECTED (1 << 1)
9bde9f26 388#define UVC_QUEUE_DROP_CORRUPTED (1 << 2)
c0efd232
LP		 389
390struct uvc_video_queue {
ff924203
LP		 391 enum v4l2_buf_type type;
392
c0efd232
LP		 393 void *mem;
394 unsigned int flags;
395 __u32 sequence;
396
397 unsigned int count;
398 unsigned int buf_size;
ff924203 399 unsigned int buf_used;
c0efd232
LP		 400 struct uvc_buffer buffer[UVC_MAX_VIDEO_BUFFERS];
401 struct mutex mutex; /* protects buffers and mainqueue */
402 spinlock_t irqlock; /* protects irqqueue */
403
404 struct list_head mainqueue;
405 struct list_head irqqueue;
406};
407
8e113595
LP		 408struct uvc_video_chain {
409 struct uvc_device *dev;
410 struct list_head list;
411
6241d8ca 412 struct list_head entities; /* All entities */
8e113595
LP		 413 struct uvc_entity *processing; /* Processing unit */
414 struct uvc_entity *selector; /* Selector unit */
8e113595
LP		 415
416 struct mutex ctrl_mutex;
417};
418
35f02a68
LP		 419struct uvc_streaming {
420 struct list_head list;
c0efd232
LP		 421 struct uvc_device *dev;
422 struct video_device *vdev;
8e113595 423 struct uvc_video_chain *chain;
c0efd232 424 atomic_t active;
c0efd232 425
35f02a68
LP		 426 struct usb_interface *intf;
427 int intfnum;
428 __u16 maxpsize;
c0efd232 429
35f02a68
LP		 430 struct uvc_streaming_header header;
431 enum v4l2_buf_type type;
432
433 unsigned int nformats;
434 struct uvc_format *format;
c0efd232 435
35f02a68
LP		 436 struct uvc_streaming_control ctrl;
437 struct uvc_format *cur_format;
438 struct uvc_frame *cur_frame;
439
440 struct mutex mutex;
c0efd232 441
35f02a68
LP		 442 unsigned int frozen : 1;
443 struct uvc_video_queue queue;
444 void (*decode) (struct urb *urb, struct uvc_streaming *video,
c0efd232
LP		 445 struct uvc_buffer *buf);
446
447 /* Context data used by the bulk completion handler. */
448 struct {
449 __u8 header[256];
450 unsigned int header_size;
451 int skip_payload;
452 __u32 payload_size;
453 __u32 max_payload_size;
454 } bulk;
455
456 struct urb *urb[UVC_URBS];
457 char *urb_buffer[UVC_URBS];
e01117c8
LP		 458 dma_addr_t urb_dma[UVC_URBS];
459 unsigned int urb_size;
c0efd232
LP		 460
461 __u8 last_fid;
462};
463
464enum uvc_device_state {
465 UVC_DEV_DISCONNECTED = 1,
466};
467
468struct uvc_device {
469 struct usb_device *udev;
470 struct usb_interface *intf;
44f0079e 471 unsigned long warnings;
c0efd232
LP		 472 __u32 quirks;
473 int intfnum;
474 char name[32];
475
476 enum uvc_device_state state;
c0efd232 477 struct list_head list;
04a37e0f 478 atomic_t users;
c0efd232
LP		 479
480 /* Video control interface */
481 __u16 uvc_version;
482 __u32 clock_frequency;
483
484 struct list_head entities;
8e113595 485 struct list_head chains;
c0efd232 486
35f02a68
LP		 487 /* Video Streaming interfaces */
488 struct list_head streams;
716fdee1 489 atomic_t nstreams;
35f02a68 490
c0efd232
LP		 491 /* Status Interrupt Endpoint */
492 struct usb_host_endpoint *int_ep;
493 struct urb *int_urb;
a31a4055 494 __u8 *status;
c0efd232 495 struct input_dev *input;
f1801523 496 char input_phys[64];
c0efd232
LP		 497};
498
499enum uvc_handle_state {
500 UVC_HANDLE_PASSIVE = 0,
501 UVC_HANDLE_ACTIVE = 1,
502};
503
504struct uvc_fh {
8e113595 505 struct uvc_video_chain *chain;
35f02a68 506 struct uvc_streaming *stream;
c0efd232
LP		 507 enum uvc_handle_state state;
508};
509
510struct uvc_driver {
511 struct usb_driver driver;
512
c0efd232
LP		 513 struct list_head devices; /* struct uvc_device list */
514 struct list_head controls; /* struct uvc_control_info list */
515 struct mutex ctrl_mutex; /* protects controls and devices
516 lists */
517};
518
519/* ------------------------------------------------------------------------
520 * Debugging, printing and logging
521 */
522
523#define UVC_TRACE_PROBE (1 << 0)
524#define UVC_TRACE_DESCR (1 << 1)
525#define UVC_TRACE_CONTROL (1 << 2)
526#define UVC_TRACE_FORMAT (1 << 3)
527#define UVC_TRACE_CAPTURE (1 << 4)
528#define UVC_TRACE_CALLS (1 << 5)
529#define UVC_TRACE_IOCTL (1 << 6)
530#define UVC_TRACE_FRAME (1 << 7)
531#define UVC_TRACE_SUSPEND (1 << 8)
532#define UVC_TRACE_STATUS (1 << 9)
663a4192 533#define UVC_TRACE_VIDEO (1 << 10)
c0efd232 534
44f0079e
LP		 535#define UVC_WARN_MINMAX 0
536#define UVC_WARN_PROBE_DEF 1
537
310fe524 538extern unsigned int uvc_clock_param;
0fbd8ee6 539extern unsigned int uvc_no_drop_param;
c0efd232 540extern unsigned int uvc_trace_param;
b232a012 541extern unsigned int uvc_timeout_param;
c0efd232
LP		 542
543#define uvc_trace(flag, msg...) \
544 do { \
545 if (uvc_trace_param & flag) \
546 printk(KERN_DEBUG "uvcvideo: " msg); \
547 } while (0)
548
44f0079e
LP		 549#define uvc_warn_once(dev, warn, msg...) \
550 do { \
551 if (!test_and_set_bit(warn, &dev->warnings)) \
552 printk(KERN_INFO "uvcvideo: " msg); \
553 } while (0)
554
c0efd232
LP		 555#define uvc_printk(level, msg...) \
556 printk(level "uvcvideo: " msg)
557
c0efd232
LP		 558/* --------------------------------------------------------------------------
559 * Internal functions.
560 */
561
562/* Core driver */
563extern struct uvc_driver uvc_driver;
c0efd232
LP		 564
565/* Video buffers queue management. */
ff924203 566extern void uvc_queue_init(struct uvc_video_queue *queue,
9bde9f26 567 enum v4l2_buf_type type, int drop_corrupted);
c0efd232
LP		 568extern int uvc_alloc_buffers(struct uvc_video_queue *queue,
569 unsigned int nbuffers, unsigned int buflength);
570extern int uvc_free_buffers(struct uvc_video_queue *queue);
571extern int uvc_query_buffer(struct uvc_video_queue *queue,
572 struct v4l2_buffer *v4l2_buf);
573extern int uvc_queue_buffer(struct uvc_video_queue *queue,
574 struct v4l2_buffer *v4l2_buf);
575extern int uvc_dequeue_buffer(struct uvc_video_queue *queue,
576 struct v4l2_buffer *v4l2_buf, int nonblocking);
577extern int uvc_queue_enable(struct uvc_video_queue *queue, int enable);
578extern void uvc_queue_cancel(struct uvc_video_queue *queue, int disconnect);
579extern struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue,
580 struct uvc_buffer *buf);
581extern unsigned int uvc_queue_poll(struct uvc_video_queue *queue,
582 struct file *file, poll_table *wait);
23ff6043 583extern int uvc_queue_allocated(struct uvc_video_queue *queue);
c0efd232
LP		 584static inline int uvc_queue_streaming(struct uvc_video_queue *queue)
585{
586 return queue->flags & UVC_QUEUE_STREAMING;
587}
588
589/* V4L2 interface */
bec43661 590extern const struct v4l2_file_operations uvc_fops;
c0efd232
LP		 591
592/* Video */
35f02a68
LP		 593extern int uvc_video_init(struct uvc_streaming *stream);
594extern int uvc_video_suspend(struct uvc_streaming *stream);
595extern int uvc_video_resume(struct uvc_streaming *stream);
596extern int uvc_video_enable(struct uvc_streaming *stream, int enable);
597extern int uvc_probe_video(struct uvc_streaming *stream,
c0efd232 598 struct uvc_streaming_control *probe);
35f02a68 599extern int uvc_commit_video(struct uvc_streaming *stream,
44f0079e 600 struct uvc_streaming_control *ctrl);
c0efd232
LP		 601extern int uvc_query_ctrl(struct uvc_device *dev, __u8 query, __u8 unit,
602 __u8 intfnum, __u8 cs, void *data, __u16 size);
c0efd232
LP		 603
604/* Status */
605extern int uvc_status_init(struct uvc_device *dev);
606extern void uvc_status_cleanup(struct uvc_device *dev);
04a37e0f
LP		 607extern int uvc_status_start(struct uvc_device *dev);
608extern void uvc_status_stop(struct uvc_device *dev);
c0efd232
LP		 609extern int uvc_status_suspend(struct uvc_device *dev);
610extern int uvc_status_resume(struct uvc_device *dev);
611
612/* Controls */
8e113595 613extern struct uvc_control *uvc_find_control(struct uvc_video_chain *chain,
c0efd232 614 __u32 v4l2_id, struct uvc_control_mapping **mapping);
8e113595 615extern int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
c0efd232
LP		 616 struct v4l2_queryctrl *v4l2_ctrl);
617
618extern int uvc_ctrl_add_info(struct uvc_control_info *info);
619extern int uvc_ctrl_add_mapping(struct uvc_control_mapping *mapping);
620extern int uvc_ctrl_init_device(struct uvc_device *dev);
621extern void uvc_ctrl_cleanup_device(struct uvc_device *dev);
622extern int uvc_ctrl_resume_device(struct uvc_device *dev);
623extern void uvc_ctrl_init(void);
561474c2 624extern void uvc_ctrl_cleanup(void);
c0efd232 625
8e113595
LP		 626extern int uvc_ctrl_begin(struct uvc_video_chain *chain);
627extern int __uvc_ctrl_commit(struct uvc_video_chain *chain, int rollback);
628static inline int uvc_ctrl_commit(struct uvc_video_chain *chain)
c0efd232 629{
8e113595 630 return __uvc_ctrl_commit(chain, 0);
c0efd232 631}
8e113595 632static inline int uvc_ctrl_rollback(struct uvc_video_chain *chain)
c0efd232 633{
8e113595 634 return __uvc_ctrl_commit(chain, 1);
c0efd232
LP		 635}
636
8e113595 637extern int uvc_ctrl_get(struct uvc_video_chain *chain,
c0efd232 638 struct v4l2_ext_control *xctrl);
8e113595 639extern int uvc_ctrl_set(struct uvc_video_chain *chain,
c0efd232
LP		 640 struct v4l2_ext_control *xctrl);
641
8e113595 642extern int uvc_xu_ctrl_query(struct uvc_video_chain *chain,
c0efd232
LP		 643 struct uvc_xu_control *ctrl, int set);
644
645/* Utility functions */
646extern void uvc_simplify_fraction(uint32_t *numerator, uint32_t *denominator,
647 unsigned int n_terms, unsigned int threshold);
648extern uint32_t uvc_fraction_to_interval(uint32_t numerator,
649 uint32_t denominator);
650extern struct usb_host_endpoint *uvc_find_endpoint(
651 struct usb_host_interface *alts, __u8 epaddr);
652
653/* Quirks support */
35f02a68 654void uvc_video_decode_isight(struct urb *urb, struct uvc_streaming *stream,
c0efd232
LP		 655 struct uvc_buffer *buf);
656
657#endif /* __KERNEL__ */
658
659#endif
f87086e3 660
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