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[media] uvcvideo: Ignore entities for terminals with no supported format
[GitHub/mt8127/android_kernel_alcatel_ttab.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
5f708812
LP		 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.
12 */
13#warn "The uvcvideo.h header is deprecated, use linux/uvcvideo.h instead."
14
c0efd232
LP		 15/*
16 * Dynamic controls
17 */
18
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
26
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)
c0efd232 34#define UVC_CONTROL_RESTORE (1 << 6)
c0efd232
LP		 35#define UVC_CONTROL_AUTO_UPDATE (1 << 7)
36
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)
40
561474c2
LP		 41struct uvc_menu_info {
42 __u32 value;
43 __u8 name[32];
44};
45
c0efd232
LP		 46struct uvc_xu_control_mapping {
47 __u32 id;
48 __u8 name[32];
49 __u8 entity[16];
50 __u8 selector;
51
52 __u8 size;
53 __u8 offset;
fe78d187 54 __u32 v4l2_type;
c0efd232 55 __u32 data_type;
561474c2
LP		 56
57 struct uvc_menu_info __user *menu_info;
58 __u32 menu_count;
59
60 __u32 reserved[4];
c0efd232
LP		 61};
62
5f708812
LP		 63#endif
64
65struct uvc_xu_control_info {
66 __u8 entity[16];
67 __u8 index;
c0efd232
LP		 68 __u8 selector;
69 __u16 size;
5f708812 70 __u32 flags;
c0efd232
LP		 71};
72
5f708812
LP		 73struct uvc_xu_control_mapping_old {
74 __u8 reserved[64];
75};
76
77struct uvc_xu_control {
fe78d187
MR		 78 __u8 unit;
79 __u8 selector;
fe78d187
MR		 80 __u16 size;
81 __u8 __user *data;
82};
83
5f708812 84#ifndef __KERNEL__
c0efd232 85#define UVCIOC_CTRL_ADD _IOW('U', 1, struct uvc_xu_control_info)
561474c2 86#define UVCIOC_CTRL_MAP_OLD _IOWR('U', 2, struct uvc_xu_control_mapping_old)
c0efd232
LP		 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)
5f708812
LP		 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
c0efd232
LP		 97
98#ifdef __KERNEL__
99
100#include <linux/poll.h>
4ffc2d89 101#include <linux/usb.h>
de05f634 102#include <linux/usb/video.h>
5f708812 103#include <linux/uvcvideo.h>
5a254d75
LP		 104#include <media/media-device.h>
105#include <media/v4l2-device.h>
c0efd232
LP		 106
107/* --------------------------------------------------------------------------
108 * UVC constants
109 */
110
c0efd232
LP		 111#define UVC_TERM_INPUT 0x0000
112#define UVC_TERM_OUTPUT 0x8000
6241d8ca 113#define UVC_TERM_DIRECTION(term) ((term)->type & 0x8000)
c0efd232
LP		 114
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) \
8e113595
LP		 119 (UVC_ENTITY_IS_TERM(entity) && \
120 ((entity)->type & 0x8000) == UVC_TERM_INPUT)
c0efd232 121#define UVC_ENTITY_IS_OTERM(entity) \
8e113595
LP		 122 (UVC_ENTITY_IS_TERM(entity) && \
123 ((entity)->type & 0x8000) == UVC_TERM_OUTPUT)
c0efd232 124
c0efd232
LP		 125
126/* ------------------------------------------------------------------------
127 * GUIDs
128 */
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}
144
c0efd232
LP		 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}
68f194e0
DR		 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}
c0efd232
LP		 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}
61421206
LP		 169#define UVC_GUID_FORMAT_Y16 \
170 { 'Y', '1', '6', ' ', 0x00, 0x00, 0x10, 0x00, \
171 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
c0efd232
LP		 172#define UVC_GUID_FORMAT_BY8 \
173 { 'B', 'Y', '8', ' ', 0x00, 0x00, 0x10, 0x00, \
174 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
50791079
LP		 175#define UVC_GUID_FORMAT_RGBP \
176 { 'R', 'G', 'B', 'P', 0x00, 0x00, 0x10, 0x00, \
177 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
7225a1dc
HG		 178#define UVC_GUID_FORMAT_M420 \
179 { 'M', '4', '2', '0', 0x00, 0x00, 0x10, 0x00, \
180 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
c0efd232 181
c0efd232
LP		 182/* ------------------------------------------------------------------------
183 * Driver specific constants.
184 */
185
5f708812
LP		 186#define DRIVER_VERSION_NUMBER KERNEL_VERSION(1, 1, 0)
187#define DRIVER_VERSION "v1.1.0"
c0efd232
LP		 188
189/* Number of isochronous URBs. */
190#define UVC_URBS 5
efdc8a95
LP		 191/* Maximum number of packets per URB. */
192#define UVC_MAX_PACKETS 32
c0efd232
LP		 193/* Maximum number of video buffers. */
194#define UVC_MAX_VIDEO_BUFFERS 32
a31a4055
ML		 195/* Maximum status buffer size in bytes of interrupt URB. */
196#define UVC_MAX_STATUS_SIZE 16
c0efd232
LP		 197
198#define UVC_CTRL_CONTROL_TIMEOUT 300
56d15cd3 199#define UVC_CTRL_STREAMING_TIMEOUT 5000
c0efd232 200
8fb91b33
MR		 201/* Maximum allowed number of control mappings per device */
202#define UVC_MAX_CONTROL_MAPPINGS 1024
203
c0efd232
LP		 204/* Devices quirks */
205#define UVC_QUIRK_STATUS_INTERVAL 0x00000001
206#define UVC_QUIRK_PROBE_MINMAX 0x00000002
207#define UVC_QUIRK_PROBE_EXTRAFIELDS 0x00000004
208#define UVC_QUIRK_BUILTIN_ISIGHT 0x00000008
209#define UVC_QUIRK_STREAM_NO_FID 0x00000010
210#define UVC_QUIRK_IGNORE_SELECTOR_UNIT 0x00000020
50144aee 211#define UVC_QUIRK_FIX_BANDWIDTH 0x00000080
bab6f66c 212#define UVC_QUIRK_PROBE_DEF 0x00000100
86d8b6ab 213#define UVC_QUIRK_RESTRICT_FRAME_RATE 0x00000200
c0efd232
LP		 214
215/* Format flags */
216#define UVC_FMT_FLAG_COMPRESSED 0x00000001
217#define UVC_FMT_FLAG_STREAM 0x00000002
218
219/* ------------------------------------------------------------------------
220 * Structures.
221 */
222
223struct uvc_device;
224
225/* TODO: Put the most frequently accessed fields at the beginning of
226 * structures to maximize cache efficiency.
227 */
c0efd232 228struct uvc_control_info {
c0efd232
LP		 229 struct list_head mappings;
230
231 __u8 entity[16];
ba2fa996 232 __u8 index; /* Bit index in bmControls */
c0efd232
LP		 233 __u8 selector;
234
235 __u16 size;
236 __u32 flags;
237};
238
239struct uvc_control_mapping {
240 struct list_head list;
241
242 struct uvc_control_info *ctrl;
243
244 __u32 id;
245 __u8 name[32];
246 __u8 entity[16];
247 __u8 selector;
248
249 __u8 size;
250 __u8 offset;
251 enum v4l2_ctrl_type v4l2_type;
252 __u32 data_type;
253
254 struct uvc_menu_info *menu_info;
255 __u32 menu_count;
9768352a
LP		 256
257 __s32 (*get) (struct uvc_control_mapping *mapping, __u8 query,
258 const __u8 *data);
259 void (*set) (struct uvc_control_mapping *mapping, __s32 value,
260 __u8 *data);
c0efd232
LP		 261};
262
263struct uvc_control {
264 struct uvc_entity *entity;
071c8bb8 265 struct uvc_control_info info;
c0efd232
LP		 266
267 __u8 index; /* Used to match the uvc_control entry with a
268 uvc_control_info. */
071c8bb8
LP		 269 __u8 dirty:1,
270 loaded:1,
271 modified:1,
272 cached:1,
273 initialized:1;
c0efd232 274
b30ece53 275 __u8 *uvc_data;
c0efd232
LP		 276};
277
278struct uvc_format_desc {
279 char *name;
280 __u8 guid[16];
281 __u32 fcc;
282};
283
284/* The term 'entity' refers to both UVC units and UVC terminals.
285 *
286 * The type field is either the terminal type (wTerminalType in the terminal
287 * descriptor), or the unit type (bDescriptorSubtype in the unit descriptor).
288 * As the bDescriptorSubtype field is one byte long, the type value will
289 * always have a null MSB for units. All terminal types defined by the UVC
290 * specification have a non-null MSB, so it is safe to use the MSB to
291 * differentiate between units and terminals as long as the descriptor parsing
292 * code makes sure terminal types have a non-null MSB.
293 *
294 * For terminals, the type's most significant bit stores the terminal
295 * direction (either UVC_TERM_INPUT or UVC_TERM_OUTPUT). The type field should
296 * always be accessed with the UVC_ENTITY_* macros and never directly.
297 */
298
299struct uvc_entity {
300 struct list_head list; /* Entity as part of a UVC device. */
301 struct list_head chain; /* Entity as part of a video device
302 * chain. */
303 __u8 id;
304 __u16 type;
305 char name[64];
306
4ffc2d89 307 /* Media controller-related fields. */
8a65a948 308 struct video_device *vdev;
4ffc2d89
LP		 309 struct v4l2_subdev subdev;
310 unsigned int num_pads;
311 unsigned int num_links;
312 struct media_pad *pads;
313
c0efd232
LP		 314 union {
315 struct {
316 __u16 wObjectiveFocalLengthMin;
317 __u16 wObjectiveFocalLengthMax;
318 __u16 wOcularFocalLength;
319 __u8 bControlSize;
320 __u8 *bmControls;
321 } camera;
322
323 struct {
324 __u8 bControlSize;
325 __u8 *bmControls;
326 __u8 bTransportModeSize;
327 __u8 *bmTransportModes;
328 } media;
329
330 struct {
c0efd232
LP		 331 } output;
332
333 struct {
c0efd232
LP		 334 __u16 wMaxMultiplier;
335 __u8 bControlSize;
336 __u8 *bmControls;
337 __u8 bmVideoStandards;
338 } processing;
339
340 struct {
c0efd232
LP		 341 } selector;
342
343 struct {
344 __u8 guidExtensionCode[16];
345 __u8 bNumControls;
c0efd232
LP		 346 __u8 bControlSize;
347 __u8 *bmControls;
348 __u8 *bmControlsType;
349 } extension;
350 };
351
8ca5a639
LP		 352 __u8 bNrInPins;
353 __u8 *baSourceID;
354
c0efd232
LP		 355 unsigned int ncontrols;
356 struct uvc_control *controls;
357};
358
359struct uvc_frame {
360 __u8 bFrameIndex;
361 __u8 bmCapabilities;
362 __u16 wWidth;
363 __u16 wHeight;
364 __u32 dwMinBitRate;
365 __u32 dwMaxBitRate;
366 __u32 dwMaxVideoFrameBufferSize;
367 __u8 bFrameIntervalType;
368 __u32 dwDefaultFrameInterval;
369 __u32 *dwFrameInterval;
370};
371
372struct uvc_format {
373 __u8 type;
374 __u8 index;
375 __u8 bpp;
376 __u8 colorspace;
377 __u32 fcc;
378 __u32 flags;
379
380 char name[32];
381
382 unsigned int nframes;
383 struct uvc_frame *frame;
384};
385
386struct uvc_streaming_header {
387 __u8 bNumFormats;
388 __u8 bEndpointAddress;
389 __u8 bTerminalLink;
390 __u8 bControlSize;
391 __u8 *bmaControls;
392 /* The following fields are used by input headers only. */
393 __u8 bmInfo;
394 __u8 bStillCaptureMethod;
395 __u8 bTriggerSupport;
396 __u8 bTriggerUsage;
397};
398
c0efd232 399enum uvc_buffer_state {
2c2d264b
LP		 400 UVC_BUF_STATE_IDLE = 0,
401 UVC_BUF_STATE_QUEUED = 1,
402 UVC_BUF_STATE_ACTIVE = 2,
d7c0d439
LP		 403 UVC_BUF_STATE_READY = 3,
404 UVC_BUF_STATE_DONE = 4,
405 UVC_BUF_STATE_ERROR = 5,
c0efd232
LP		 406};
407
408struct uvc_buffer {
409 unsigned long vma_use_count;
410 struct list_head stream;
411
412 /* Touched by interrupt handler. */
413 struct v4l2_buffer buf;
414 struct list_head queue;
415 wait_queue_head_t wait;
416 enum uvc_buffer_state state;
9bde9f26 417 unsigned int error;
c0efd232
LP		 418};
419
420#define UVC_QUEUE_STREAMING (1 << 0)
421#define UVC_QUEUE_DISCONNECTED (1 << 1)
9bde9f26 422#define UVC_QUEUE_DROP_CORRUPTED (1 << 2)
c0efd232
LP		 423
424struct uvc_video_queue {
ff924203
LP		 425 enum v4l2_buf_type type;
426
c0efd232
LP		 427 void *mem;
428 unsigned int flags;
c0efd232
LP		 429
430 unsigned int count;
431 unsigned int buf_size;
ff924203 432 unsigned int buf_used;
c0efd232
LP		 433 struct uvc_buffer buffer[UVC_MAX_VIDEO_BUFFERS];
434 struct mutex mutex; /* protects buffers and mainqueue */
435 spinlock_t irqlock; /* protects irqqueue */
436
437 struct list_head mainqueue;
438 struct list_head irqqueue;
439};
440
8e113595
LP		 441struct uvc_video_chain {
442 struct uvc_device *dev;
443 struct list_head list;
444
6241d8ca 445 struct list_head entities; /* All entities */
8e113595
LP		 446 struct uvc_entity *processing; /* Processing unit */
447 struct uvc_entity *selector; /* Selector unit */
8e113595 448
27a61c13 449 struct mutex ctrl_mutex; /* Protects ctrl.info */
8e113595
LP		 450};
451
35f02a68
LP		 452struct uvc_streaming {
453 struct list_head list;
c0efd232
LP		 454 struct uvc_device *dev;
455 struct video_device *vdev;
8e113595 456 struct uvc_video_chain *chain;
c0efd232 457 atomic_t active;
c0efd232 458
35f02a68
LP		 459 struct usb_interface *intf;
460 int intfnum;
461 __u16 maxpsize;
c0efd232 462
35f02a68
LP		 463 struct uvc_streaming_header header;
464 enum v4l2_buf_type type;
465
466 unsigned int nformats;
467 struct uvc_format *format;
c0efd232 468
35f02a68
LP		 469 struct uvc_streaming_control ctrl;
470 struct uvc_format *cur_format;
471 struct uvc_frame *cur_frame;
6947756d
LP		 472 /* Protect access to ctrl, cur_format, cur_frame and hardware video
473 * probe control.
474 */
35f02a68 475 struct mutex mutex;
c0efd232 476
35f02a68
LP		 477 unsigned int frozen : 1;
478 struct uvc_video_queue queue;
479 void (*decode) (struct urb *urb, struct uvc_streaming *video,
c0efd232
LP		 480 struct uvc_buffer *buf);
481
482 /* Context data used by the bulk completion handler. */
483 struct {
484 __u8 header[256];
485 unsigned int header_size;
486 int skip_payload;
487 __u32 payload_size;
488 __u32 max_payload_size;
489 } bulk;
490
491 struct urb *urb[UVC_URBS];
492 char *urb_buffer[UVC_URBS];
e01117c8
LP		 493 dma_addr_t urb_dma[UVC_URBS];
494 unsigned int urb_size;
c0efd232 495
650b95fe 496 __u32 sequence;
c0efd232
LP		 497 __u8 last_fid;
498};
499
500enum uvc_device_state {
501 UVC_DEV_DISCONNECTED = 1,
502};
503
504struct uvc_device {
505 struct usb_device *udev;
506 struct usb_interface *intf;
44f0079e 507 unsigned long warnings;
c0efd232
LP		 508 __u32 quirks;
509 int intfnum;
510 char name[32];
511
512 enum uvc_device_state state;
04a37e0f 513 atomic_t users;
8fb91b33 514 atomic_t nmappings;
c0efd232
LP		 515
516 /* Video control interface */
5a254d75
LP		 517#ifdef CONFIG_MEDIA_CONTROLLER
518 struct media_device mdev;
519#endif
520 struct v4l2_device vdev;
c0efd232
LP		 521 __u16 uvc_version;
522 __u32 clock_frequency;
523
524 struct list_head entities;
8e113595 525 struct list_head chains;
c0efd232 526
35f02a68
LP		 527 /* Video Streaming interfaces */
528 struct list_head streams;
716fdee1 529 atomic_t nstreams;
35f02a68 530
c0efd232
LP		 531 /* Status Interrupt Endpoint */
532 struct usb_host_endpoint *int_ep;
533 struct urb *int_urb;
a31a4055 534 __u8 *status;
c0efd232 535 struct input_dev *input;
f1801523 536 char input_phys[64];
c0efd232
LP		 537};
538
539enum uvc_handle_state {
540 UVC_HANDLE_PASSIVE = 0,
541 UVC_HANDLE_ACTIVE = 1,
542};
543
544struct uvc_fh {
8e113595 545 struct uvc_video_chain *chain;
35f02a68 546 struct uvc_streaming *stream;
c0efd232
LP		 547 enum uvc_handle_state state;
548};
549
550struct uvc_driver {
551 struct usb_driver driver;
c0efd232
LP		 552};
553
554/* ------------------------------------------------------------------------
555 * Debugging, printing and logging
556 */
557
558#define UVC_TRACE_PROBE (1 << 0)
559#define UVC_TRACE_DESCR (1 << 1)
560#define UVC_TRACE_CONTROL (1 << 2)
561#define UVC_TRACE_FORMAT (1 << 3)
562#define UVC_TRACE_CAPTURE (1 << 4)
563#define UVC_TRACE_CALLS (1 << 5)
564#define UVC_TRACE_IOCTL (1 << 6)
565#define UVC_TRACE_FRAME (1 << 7)
566#define UVC_TRACE_SUSPEND (1 << 8)
567#define UVC_TRACE_STATUS (1 << 9)
663a4192 568#define UVC_TRACE_VIDEO (1 << 10)
c0efd232 569
44f0079e
LP		 570#define UVC_WARN_MINMAX 0
571#define UVC_WARN_PROBE_DEF 1
572
310fe524 573extern unsigned int uvc_clock_param;
0fbd8ee6 574extern unsigned int uvc_no_drop_param;
c0efd232 575extern unsigned int uvc_trace_param;
b232a012 576extern unsigned int uvc_timeout_param;
c0efd232
LP		 577
578#define uvc_trace(flag, msg...) \
579 do { \
580 if (uvc_trace_param & flag) \
581 printk(KERN_DEBUG "uvcvideo: " msg); \
582 } while (0)
583
44f0079e
LP		 584#define uvc_warn_once(dev, warn, msg...) \
585 do { \
586 if (!test_and_set_bit(warn, &dev->warnings)) \
587 printk(KERN_INFO "uvcvideo: " msg); \
588 } while (0)
589
c0efd232
LP		 590#define uvc_printk(level, msg...) \
591 printk(level "uvcvideo: " msg)
592
c0efd232
LP		 593/* --------------------------------------------------------------------------
594 * Internal functions.
595 */
596
597/* Core driver */
598extern struct uvc_driver uvc_driver;
c0efd232 599
4ffc2d89
LP		 600extern struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id);
601
c0efd232 602/* Video buffers queue management. */
ff924203 603extern void uvc_queue_init(struct uvc_video_queue *queue,
9bde9f26 604 enum v4l2_buf_type type, int drop_corrupted);
c0efd232
LP		 605extern int uvc_alloc_buffers(struct uvc_video_queue *queue,
606 unsigned int nbuffers, unsigned int buflength);
607extern int uvc_free_buffers(struct uvc_video_queue *queue);
608extern int uvc_query_buffer(struct uvc_video_queue *queue,
609 struct v4l2_buffer *v4l2_buf);
610extern int uvc_queue_buffer(struct uvc_video_queue *queue,
611 struct v4l2_buffer *v4l2_buf);
612extern int uvc_dequeue_buffer(struct uvc_video_queue *queue,
613 struct v4l2_buffer *v4l2_buf, int nonblocking);
614extern int uvc_queue_enable(struct uvc_video_queue *queue, int enable);
615extern void uvc_queue_cancel(struct uvc_video_queue *queue, int disconnect);
616extern struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue,
617 struct uvc_buffer *buf);
4aa27597
LP		 618extern int uvc_queue_mmap(struct uvc_video_queue *queue,
619 struct vm_area_struct *vma);
c0efd232
LP		 620extern unsigned int uvc_queue_poll(struct uvc_video_queue *queue,
621 struct file *file, poll_table *wait);
72969447
BL		 622#ifndef CONFIG_MMU
623extern unsigned long uvc_queue_get_unmapped_area(struct uvc_video_queue *queue,
624 unsigned long pgoff);
625#endif
23ff6043 626extern int uvc_queue_allocated(struct uvc_video_queue *queue);
c0efd232
LP		 627static inline int uvc_queue_streaming(struct uvc_video_queue *queue)
628{
629 return queue->flags & UVC_QUEUE_STREAMING;
630}
631
632/* V4L2 interface */
bec43661 633extern const struct v4l2_file_operations uvc_fops;
c0efd232 634
4ffc2d89
LP		 635/* Media controller */
636extern int uvc_mc_register_entities(struct uvc_video_chain *chain);
637extern void uvc_mc_cleanup_entity(struct uvc_entity *entity);
638
c0efd232 639/* Video */
35f02a68
LP		 640extern int uvc_video_init(struct uvc_streaming *stream);
641extern int uvc_video_suspend(struct uvc_streaming *stream);
642extern int uvc_video_resume(struct uvc_streaming *stream);
643extern int uvc_video_enable(struct uvc_streaming *stream, int enable);
644extern int uvc_probe_video(struct uvc_streaming *stream,
c0efd232 645 struct uvc_streaming_control *probe);
35f02a68 646extern int uvc_commit_video(struct uvc_streaming *stream,
44f0079e 647 struct uvc_streaming_control *ctrl);
c0efd232
LP		 648extern int uvc_query_ctrl(struct uvc_device *dev, __u8 query, __u8 unit,
649 __u8 intfnum, __u8 cs, void *data, __u16 size);
c0efd232
LP		 650
651/* Status */
652extern int uvc_status_init(struct uvc_device *dev);
653extern void uvc_status_cleanup(struct uvc_device *dev);
04a37e0f
LP		 654extern int uvc_status_start(struct uvc_device *dev);
655extern void uvc_status_stop(struct uvc_device *dev);
c0efd232
LP		 656extern int uvc_status_suspend(struct uvc_device *dev);
657extern int uvc_status_resume(struct uvc_device *dev);
658
659/* Controls */
8e113595 660extern int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
c0efd232 661 struct v4l2_queryctrl *v4l2_ctrl);
23d9f3ef
LP		 662extern int uvc_query_v4l2_menu(struct uvc_video_chain *chain,
663 struct v4l2_querymenu *query_menu);
c0efd232 664
ba2fa996
LP		 665extern int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
666 const struct uvc_control_mapping *mapping);
c0efd232
LP		 667extern int uvc_ctrl_init_device(struct uvc_device *dev);
668extern void uvc_ctrl_cleanup_device(struct uvc_device *dev);
669extern int uvc_ctrl_resume_device(struct uvc_device *dev);
c0efd232 670
8e113595
LP		 671extern int uvc_ctrl_begin(struct uvc_video_chain *chain);
672extern int __uvc_ctrl_commit(struct uvc_video_chain *chain, int rollback);
673static inline int uvc_ctrl_commit(struct uvc_video_chain *chain)
c0efd232 674{
8e113595 675 return __uvc_ctrl_commit(chain, 0);
c0efd232 676}
8e113595 677static inline int uvc_ctrl_rollback(struct uvc_video_chain *chain)
c0efd232 678{
8e113595 679 return __uvc_ctrl_commit(chain, 1);
c0efd232
LP		 680}
681
8e113595 682extern int uvc_ctrl_get(struct uvc_video_chain *chain,
c0efd232 683 struct v4l2_ext_control *xctrl);
8e113595 684extern int uvc_ctrl_set(struct uvc_video_chain *chain,
c0efd232
LP		 685 struct v4l2_ext_control *xctrl);
686
8e113595 687extern int uvc_xu_ctrl_query(struct uvc_video_chain *chain,
fe78d187 688 struct uvc_xu_control_query *xqry);
c0efd232
LP		 689
690/* Utility functions */
691extern void uvc_simplify_fraction(uint32_t *numerator, uint32_t *denominator,
692 unsigned int n_terms, unsigned int threshold);
693extern uint32_t uvc_fraction_to_interval(uint32_t numerator,
694 uint32_t denominator);
695extern struct usb_host_endpoint *uvc_find_endpoint(
696 struct usb_host_interface *alts, __u8 epaddr);
697
698/* Quirks support */
35f02a68 699void uvc_video_decode_isight(struct urb *urb, struct uvc_streaming *stream,
c0efd232
LP		 700 struct uvc_buffer *buf);
701
702#endif /* __KERNEL__ */
703
704#endif
kernel source for telekom puls (alcatel/mediatek)