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cd1f21d9b0791abc75d7c582ec45d311f5243019
[deliverable/linux.git] / drivers / media / video / v4l2-common.c
1 /*
2 * Video for Linux Two
3 *
4 * A generic video device interface for the LINUX operating system
5 * using a set of device structures/vectors for low level operations.
6 *
7 * This file replaces the videodev.c file that comes with the
8 * regular kernel distribution.
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version
13 * 2 of the License, or (at your option) any later version.
14 *
15 * Author: Bill Dirks <bill@thedirks.org>
16 * based on code by Alan Cox, <alan@cymru.net>
17 *
18 */
19
20 /*
21 * Video capture interface for Linux
22 *
23 * A generic video device interface for the LINUX operating system
24 * using a set of device structures/vectors for low level operations.
25 *
26 * This program is free software; you can redistribute it and/or
27 * modify it under the terms of the GNU General Public License
28 * as published by the Free Software Foundation; either version
29 * 2 of the License, or (at your option) any later version.
30 *
31 * Author: Alan Cox, <alan@lxorguk.ukuu.org.uk>
32 *
33 * Fixes:
34 */
35
36 /*
37 * Video4linux 1/2 integration by Justin Schoeman
38 * <justin@suntiger.ee.up.ac.za>
39 * 2.4 PROCFS support ported from 2.4 kernels by
40 * Iñaki García Etxebarria <garetxe@euskalnet.net>
41 * Makefile fix by "W. Michael Petullo" <mike@flyn.org>
42 * 2.4 devfs support ported from 2.4 kernels by
43 * Dan Merillat <dan@merillat.org>
44 * Added Gerd Knorrs v4l1 enhancements (Justin Schoeman)
45 */
46
47 #include <linux/module.h>
48 #include <linux/types.h>
49 #include <linux/kernel.h>
50 #include <linux/mm.h>
51 #include <linux/string.h>
52 #include <linux/errno.h>
53 #include <linux/i2c.h>
54 #if defined(CONFIG_SPI)
55 #include <linux/spi/spi.h>
56 #endif
57 #include <asm/uaccess.h>
58 #include <asm/system.h>
59 #include <asm/pgtable.h>
60 #include <asm/io.h>
61 #include <asm/div64.h>
62 #define __OLD_VIDIOC_ /* To allow fixing old calls*/
63 #include <media/v4l2-common.h>
64 #include <media/v4l2-device.h>
65 #include <media/v4l2-chip-ident.h>
66
67 #include <linux/videodev2.h>
68
69 MODULE_AUTHOR("Bill Dirks, Justin Schoeman, Gerd Knorr");
70 MODULE_DESCRIPTION("misc helper functions for v4l2 device drivers");
71 MODULE_LICENSE("GPL");
72
73 /*
74 *
75 * V 4 L 2 D R I V E R H E L P E R A P I
76 *
77 */
78
79 /*
80 * Video Standard Operations (contributed by Michael Schimek)
81 */
82
83
84 /* ----------------------------------------------------------------- */
85 /* priority handling */
86
87 #define V4L2_PRIO_VALID(val) (val == V4L2_PRIORITY_BACKGROUND || \
88 val == V4L2_PRIORITY_INTERACTIVE || \
89 val == V4L2_PRIORITY_RECORD)
90
91 int v4l2_prio_init(struct v4l2_prio_state *global)
92 {
93 memset(global,0,sizeof(*global));
94 return 0;
95 }
96 EXPORT_SYMBOL(v4l2_prio_init);
97
98 int v4l2_prio_change(struct v4l2_prio_state *global, enum v4l2_priority *local,
99 enum v4l2_priority new)
100 {
101 if (!V4L2_PRIO_VALID(new))
102 return -EINVAL;
103 if (*local == new)
104 return 0;
105
106 atomic_inc(&global->prios[new]);
107 if (V4L2_PRIO_VALID(*local))
108 atomic_dec(&global->prios[*local]);
109 *local = new;
110 return 0;
111 }
112 EXPORT_SYMBOL(v4l2_prio_change);
113
114 int v4l2_prio_open(struct v4l2_prio_state *global, enum v4l2_priority *local)
115 {
116 return v4l2_prio_change(global,local,V4L2_PRIORITY_DEFAULT);
117 }
118 EXPORT_SYMBOL(v4l2_prio_open);
119
120 int v4l2_prio_close(struct v4l2_prio_state *global, enum v4l2_priority *local)
121 {
122 if (V4L2_PRIO_VALID(*local))
123 atomic_dec(&global->prios[*local]);
124 return 0;
125 }
126 EXPORT_SYMBOL(v4l2_prio_close);
127
128 enum v4l2_priority v4l2_prio_max(struct v4l2_prio_state *global)
129 {
130 if (atomic_read(&global->prios[V4L2_PRIORITY_RECORD]) > 0)
131 return V4L2_PRIORITY_RECORD;
132 if (atomic_read(&global->prios[V4L2_PRIORITY_INTERACTIVE]) > 0)
133 return V4L2_PRIORITY_INTERACTIVE;
134 if (atomic_read(&global->prios[V4L2_PRIORITY_BACKGROUND]) > 0)
135 return V4L2_PRIORITY_BACKGROUND;
136 return V4L2_PRIORITY_UNSET;
137 }
138 EXPORT_SYMBOL(v4l2_prio_max);
139
140 int v4l2_prio_check(struct v4l2_prio_state *global, enum v4l2_priority *local)
141 {
142 if (*local < v4l2_prio_max(global))
143 return -EBUSY;
144 return 0;
145 }
146 EXPORT_SYMBOL(v4l2_prio_check);
147
148 /* ----------------------------------------------------------------- */
149
150 /* Helper functions for control handling */
151
152 /* Check for correctness of the ctrl's value based on the data from
153 struct v4l2_queryctrl and the available menu items. Note that
154 menu_items may be NULL, in that case it is ignored. */
155 int v4l2_ctrl_check(struct v4l2_ext_control *ctrl, struct v4l2_queryctrl *qctrl,
156 const char **menu_items)
157 {
158 if (qctrl->flags & V4L2_CTRL_FLAG_DISABLED)
159 return -EINVAL;
160 if (qctrl->flags & V4L2_CTRL_FLAG_GRABBED)
161 return -EBUSY;
162 if (qctrl->type == V4L2_CTRL_TYPE_STRING)
163 return 0;
164 if (qctrl->type == V4L2_CTRL_TYPE_BUTTON ||
165 qctrl->type == V4L2_CTRL_TYPE_INTEGER64 ||
166 qctrl->type == V4L2_CTRL_TYPE_CTRL_CLASS)
167 return 0;
168 if (ctrl->value < qctrl->minimum || ctrl->value > qctrl->maximum)
169 return -ERANGE;
170 if (qctrl->type == V4L2_CTRL_TYPE_MENU && menu_items != NULL) {
171 if (menu_items[ctrl->value] == NULL ||
172 menu_items[ctrl->value][0] == '\0')
173 return -EINVAL;
174 }
175 return 0;
176 }
177 EXPORT_SYMBOL(v4l2_ctrl_check);
178
179 /* Returns NULL or a character pointer array containing the menu for
180 the given control ID. The pointer array ends with a NULL pointer.
181 An empty string signifies a menu entry that is invalid. This allows
182 drivers to disable certain options if it is not supported. */
183 const char **v4l2_ctrl_get_menu(u32 id)
184 {
185 static const char *mpeg_audio_sampling_freq[] = {
186 "44.1 kHz",
187 "48 kHz",
188 "32 kHz",
189 NULL
190 };
191 static const char *mpeg_audio_encoding[] = {
192 "MPEG-1/2 Layer I",
193 "MPEG-1/2 Layer II",
194 "MPEG-1/2 Layer III",
195 "MPEG-2/4 AAC",
196 "AC-3",
197 NULL
198 };
199 static const char *mpeg_audio_l1_bitrate[] = {
200 "32 kbps",
201 "64 kbps",
202 "96 kbps",
203 "128 kbps",
204 "160 kbps",
205 "192 kbps",
206 "224 kbps",
207 "256 kbps",
208 "288 kbps",
209 "320 kbps",
210 "352 kbps",
211 "384 kbps",
212 "416 kbps",
213 "448 kbps",
214 NULL
215 };
216 static const char *mpeg_audio_l2_bitrate[] = {
217 "32 kbps",
218 "48 kbps",
219 "56 kbps",
220 "64 kbps",
221 "80 kbps",
222 "96 kbps",
223 "112 kbps",
224 "128 kbps",
225 "160 kbps",
226 "192 kbps",
227 "224 kbps",
228 "256 kbps",
229 "320 kbps",
230 "384 kbps",
231 NULL
232 };
233 static const char *mpeg_audio_l3_bitrate[] = {
234 "32 kbps",
235 "40 kbps",
236 "48 kbps",
237 "56 kbps",
238 "64 kbps",
239 "80 kbps",
240 "96 kbps",
241 "112 kbps",
242 "128 kbps",
243 "160 kbps",
244 "192 kbps",
245 "224 kbps",
246 "256 kbps",
247 "320 kbps",
248 NULL
249 };
250 static const char *mpeg_audio_ac3_bitrate[] = {
251 "32 kbps",
252 "40 kbps",
253 "48 kbps",
254 "56 kbps",
255 "64 kbps",
256 "80 kbps",
257 "96 kbps",
258 "112 kbps",
259 "128 kbps",
260 "160 kbps",
261 "192 kbps",
262 "224 kbps",
263 "256 kbps",
264 "320 kbps",
265 "384 kbps",
266 "448 kbps",
267 "512 kbps",
268 "576 kbps",
269 "640 kbps",
270 NULL
271 };
272 static const char *mpeg_audio_mode[] = {
273 "Stereo",
274 "Joint Stereo",
275 "Dual",
276 "Mono",
277 NULL
278 };
279 static const char *mpeg_audio_mode_extension[] = {
280 "Bound 4",
281 "Bound 8",
282 "Bound 12",
283 "Bound 16",
284 NULL
285 };
286 static const char *mpeg_audio_emphasis[] = {
287 "No Emphasis",
288 "50/15 us",
289 "CCITT J17",
290 NULL
291 };
292 static const char *mpeg_audio_crc[] = {
293 "No CRC",
294 "16-bit CRC",
295 NULL
296 };
297 static const char *mpeg_video_encoding[] = {
298 "MPEG-1",
299 "MPEG-2",
300 "MPEG-4 AVC",
301 NULL
302 };
303 static const char *mpeg_video_aspect[] = {
304 "1x1",
305 "4x3",
306 "16x9",
307 "2.21x1",
308 NULL
309 };
310 static const char *mpeg_video_bitrate_mode[] = {
311 "Variable Bitrate",
312 "Constant Bitrate",
313 NULL
314 };
315 static const char *mpeg_stream_type[] = {
316 "MPEG-2 Program Stream",
317 "MPEG-2 Transport Stream",
318 "MPEG-1 System Stream",
319 "MPEG-2 DVD-compatible Stream",
320 "MPEG-1 VCD-compatible Stream",
321 "MPEG-2 SVCD-compatible Stream",
322 NULL
323 };
324 static const char *mpeg_stream_vbi_fmt[] = {
325 "No VBI",
326 "Private packet, IVTV format",
327 NULL
328 };
329 static const char *camera_power_line_frequency[] = {
330 "Disabled",
331 "50 Hz",
332 "60 Hz",
333 NULL
334 };
335 static const char *camera_exposure_auto[] = {
336 "Auto Mode",
337 "Manual Mode",
338 "Shutter Priority Mode",
339 "Aperture Priority Mode",
340 NULL
341 };
342 static const char *colorfx[] = {
343 "None",
344 "Black & White",
345 "Sepia",
346 NULL
347 };
348 static const char *tune_preemphasis[] = {
349 "No preemphasis",
350 "50 useconds",
351 "75 useconds",
352 NULL,
353 };
354
355 switch (id) {
356 case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
357 return mpeg_audio_sampling_freq;
358 case V4L2_CID_MPEG_AUDIO_ENCODING:
359 return mpeg_audio_encoding;
360 case V4L2_CID_MPEG_AUDIO_L1_BITRATE:
361 return mpeg_audio_l1_bitrate;
362 case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
363 return mpeg_audio_l2_bitrate;
364 case V4L2_CID_MPEG_AUDIO_L3_BITRATE:
365 return mpeg_audio_l3_bitrate;
366 case V4L2_CID_MPEG_AUDIO_AC3_BITRATE:
367 return mpeg_audio_ac3_bitrate;
368 case V4L2_CID_MPEG_AUDIO_MODE:
369 return mpeg_audio_mode;
370 case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION:
371 return mpeg_audio_mode_extension;
372 case V4L2_CID_MPEG_AUDIO_EMPHASIS:
373 return mpeg_audio_emphasis;
374 case V4L2_CID_MPEG_AUDIO_CRC:
375 return mpeg_audio_crc;
376 case V4L2_CID_MPEG_VIDEO_ENCODING:
377 return mpeg_video_encoding;
378 case V4L2_CID_MPEG_VIDEO_ASPECT:
379 return mpeg_video_aspect;
380 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
381 return mpeg_video_bitrate_mode;
382 case V4L2_CID_MPEG_STREAM_TYPE:
383 return mpeg_stream_type;
384 case V4L2_CID_MPEG_STREAM_VBI_FMT:
385 return mpeg_stream_vbi_fmt;
386 case V4L2_CID_POWER_LINE_FREQUENCY:
387 return camera_power_line_frequency;
388 case V4L2_CID_EXPOSURE_AUTO:
389 return camera_exposure_auto;
390 case V4L2_CID_COLORFX:
391 return colorfx;
392 case V4L2_CID_TUNE_PREEMPHASIS:
393 return tune_preemphasis;
394 default:
395 return NULL;
396 }
397 }
398 EXPORT_SYMBOL(v4l2_ctrl_get_menu);
399
400 /* Return the control name. */
401 const char *v4l2_ctrl_get_name(u32 id)
402 {
403 switch (id) {
404 /* USER controls */
405 case V4L2_CID_USER_CLASS: return "User Controls";
406 case V4L2_CID_BRIGHTNESS: return "Brightness";
407 case V4L2_CID_CONTRAST: return "Contrast";
408 case V4L2_CID_SATURATION: return "Saturation";
409 case V4L2_CID_HUE: return "Hue";
410 case V4L2_CID_AUDIO_VOLUME: return "Volume";
411 case V4L2_CID_AUDIO_BALANCE: return "Balance";
412 case V4L2_CID_AUDIO_BASS: return "Bass";
413 case V4L2_CID_AUDIO_TREBLE: return "Treble";
414 case V4L2_CID_AUDIO_MUTE: return "Mute";
415 case V4L2_CID_AUDIO_LOUDNESS: return "Loudness";
416 case V4L2_CID_BLACK_LEVEL: return "Black Level";
417 case V4L2_CID_AUTO_WHITE_BALANCE: return "White Balance, Automatic";
418 case V4L2_CID_DO_WHITE_BALANCE: return "Do White Balance";
419 case V4L2_CID_RED_BALANCE: return "Red Balance";
420 case V4L2_CID_BLUE_BALANCE: return "Blue Balance";
421 case V4L2_CID_GAMMA: return "Gamma";
422 case V4L2_CID_EXPOSURE: return "Exposure";
423 case V4L2_CID_AUTOGAIN: return "Gain, Automatic";
424 case V4L2_CID_GAIN: return "Gain";
425 case V4L2_CID_HFLIP: return "Horizontal Flip";
426 case V4L2_CID_VFLIP: return "Vertical Flip";
427 case V4L2_CID_HCENTER: return "Horizontal Center";
428 case V4L2_CID_VCENTER: return "Vertical Center";
429 case V4L2_CID_POWER_LINE_FREQUENCY: return "Power Line Frequency";
430 case V4L2_CID_HUE_AUTO: return "Hue, Automatic";
431 case V4L2_CID_WHITE_BALANCE_TEMPERATURE: return "White Balance Temperature";
432 case V4L2_CID_SHARPNESS: return "Sharpness";
433 case V4L2_CID_BACKLIGHT_COMPENSATION: return "Backlight Compensation";
434 case V4L2_CID_CHROMA_AGC: return "Chroma AGC";
435 case V4L2_CID_CHROMA_GAIN: return "Chroma Gain";
436 case V4L2_CID_COLOR_KILLER: return "Color Killer";
437 case V4L2_CID_COLORFX: return "Color Effects";
438 case V4L2_CID_AUTOBRIGHTNESS: return "Brightness, Automatic";
439 case V4L2_CID_BAND_STOP_FILTER: return "Band-Stop Filter";
440 case V4L2_CID_ROTATE: return "Rotate";
441 case V4L2_CID_BG_COLOR: return "Background Color";
442
443 /* MPEG controls */
444 case V4L2_CID_MPEG_CLASS: return "MPEG Encoder Controls";
445 case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: return "Audio Sampling Frequency";
446 case V4L2_CID_MPEG_AUDIO_ENCODING: return "Audio Encoding";
447 case V4L2_CID_MPEG_AUDIO_L1_BITRATE: return "Audio Layer I Bitrate";
448 case V4L2_CID_MPEG_AUDIO_L2_BITRATE: return "Audio Layer II Bitrate";
449 case V4L2_CID_MPEG_AUDIO_L3_BITRATE: return "Audio Layer III Bitrate";
450 case V4L2_CID_MPEG_AUDIO_AAC_BITRATE: return "Audio AAC Bitrate";
451 case V4L2_CID_MPEG_AUDIO_AC3_BITRATE: return "Audio AC-3 Bitrate";
452 case V4L2_CID_MPEG_AUDIO_MODE: return "Audio Stereo Mode";
453 case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION: return "Audio Stereo Mode Extension";
454 case V4L2_CID_MPEG_AUDIO_EMPHASIS: return "Audio Emphasis";
455 case V4L2_CID_MPEG_AUDIO_CRC: return "Audio CRC";
456 case V4L2_CID_MPEG_AUDIO_MUTE: return "Audio Mute";
457 case V4L2_CID_MPEG_VIDEO_ENCODING: return "Video Encoding";
458 case V4L2_CID_MPEG_VIDEO_ASPECT: return "Video Aspect";
459 case V4L2_CID_MPEG_VIDEO_B_FRAMES: return "Video B Frames";
460 case V4L2_CID_MPEG_VIDEO_GOP_SIZE: return "Video GOP Size";
461 case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE: return "Video GOP Closure";
462 case V4L2_CID_MPEG_VIDEO_PULLDOWN: return "Video Pulldown";
463 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: return "Video Bitrate Mode";
464 case V4L2_CID_MPEG_VIDEO_BITRATE: return "Video Bitrate";
465 case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK: return "Video Peak Bitrate";
466 case V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION: return "Video Temporal Decimation";
467 case V4L2_CID_MPEG_VIDEO_MUTE: return "Video Mute";
468 case V4L2_CID_MPEG_VIDEO_MUTE_YUV: return "Video Mute YUV";
469 case V4L2_CID_MPEG_STREAM_TYPE: return "Stream Type";
470 case V4L2_CID_MPEG_STREAM_PID_PMT: return "Stream PMT Program ID";
471 case V4L2_CID_MPEG_STREAM_PID_AUDIO: return "Stream Audio Program ID";
472 case V4L2_CID_MPEG_STREAM_PID_VIDEO: return "Stream Video Program ID";
473 case V4L2_CID_MPEG_STREAM_PID_PCR: return "Stream PCR Program ID";
474 case V4L2_CID_MPEG_STREAM_PES_ID_AUDIO: return "Stream PES Audio ID";
475 case V4L2_CID_MPEG_STREAM_PES_ID_VIDEO: return "Stream PES Video ID";
476 case V4L2_CID_MPEG_STREAM_VBI_FMT: return "Stream VBI Format";
477
478 /* CAMERA controls */
479 case V4L2_CID_CAMERA_CLASS: return "Camera Controls";
480 case V4L2_CID_EXPOSURE_AUTO: return "Auto Exposure";
481 case V4L2_CID_EXPOSURE_ABSOLUTE: return "Exposure Time, Absolute";
482 case V4L2_CID_EXPOSURE_AUTO_PRIORITY: return "Exposure, Dynamic Framerate";
483 case V4L2_CID_PAN_RELATIVE: return "Pan, Relative";
484 case V4L2_CID_TILT_RELATIVE: return "Tilt, Relative";
485 case V4L2_CID_PAN_RESET: return "Pan, Reset";
486 case V4L2_CID_TILT_RESET: return "Tilt, Reset";
487 case V4L2_CID_PAN_ABSOLUTE: return "Pan, Absolute";
488 case V4L2_CID_TILT_ABSOLUTE: return "Tilt, Absolute";
489 case V4L2_CID_FOCUS_ABSOLUTE: return "Focus, Absolute";
490 case V4L2_CID_FOCUS_RELATIVE: return "Focus, Relative";
491 case V4L2_CID_FOCUS_AUTO: return "Focus, Automatic";
492 case V4L2_CID_ZOOM_ABSOLUTE: return "Zoom, Absolute";
493 case V4L2_CID_ZOOM_RELATIVE: return "Zoom, Relative";
494 case V4L2_CID_ZOOM_CONTINUOUS: return "Zoom, Continuous";
495 case V4L2_CID_PRIVACY: return "Privacy";
496
497 /* FM Radio Modulator control */
498 case V4L2_CID_FM_TX_CLASS: return "FM Radio Modulator Controls";
499 case V4L2_CID_RDS_TX_DEVIATION: return "RDS Signal Deviation";
500 case V4L2_CID_RDS_TX_PI: return "RDS Program ID";
501 case V4L2_CID_RDS_TX_PTY: return "RDS Program Type";
502 case V4L2_CID_RDS_TX_PS_NAME: return "RDS PS Name";
503 case V4L2_CID_RDS_TX_RADIO_TEXT: return "RDS Radio Text";
504 case V4L2_CID_AUDIO_LIMITER_ENABLED: return "Audio Limiter Feature Enabled";
505 case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME: return "Audio Limiter Release Time";
506 case V4L2_CID_AUDIO_LIMITER_DEVIATION: return "Audio Limiter Deviation";
507 case V4L2_CID_AUDIO_COMPRESSION_ENABLED: return "Audio Compression Feature Enabled";
508 case V4L2_CID_AUDIO_COMPRESSION_GAIN: return "Audio Compression Gain";
509 case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD: return "Audio Compression Threshold";
510 case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME: return "Audio Compression Attack Time";
511 case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME: return "Audio Compression Release Time";
512 case V4L2_CID_PILOT_TONE_ENABLED: return "Pilot Tone Feature Enabled";
513 case V4L2_CID_PILOT_TONE_DEVIATION: return "Pilot Tone Deviation";
514 case V4L2_CID_PILOT_TONE_FREQUENCY: return "Pilot Tone Frequency";
515 case V4L2_CID_TUNE_PREEMPHASIS: return "Pre-emphasis settings";
516 case V4L2_CID_TUNE_POWER_LEVEL: return "Tune Power Level";
517 case V4L2_CID_TUNE_ANTENNA_CAPACITOR: return "Tune Antenna Capacitor";
518
519 default:
520 return NULL;
521 }
522 }
523 EXPORT_SYMBOL(v4l2_ctrl_get_name);
524
525 /* Fill in a struct v4l2_queryctrl */
526 int v4l2_ctrl_query_fill(struct v4l2_queryctrl *qctrl, s32 min, s32 max, s32 step, s32 def)
527 {
528 const char *name = v4l2_ctrl_get_name(qctrl->id);
529
530 qctrl->flags = 0;
531 if (name == NULL)
532 return -EINVAL;
533
534 switch (qctrl->id) {
535 case V4L2_CID_AUDIO_MUTE:
536 case V4L2_CID_AUDIO_LOUDNESS:
537 case V4L2_CID_AUTO_WHITE_BALANCE:
538 case V4L2_CID_AUTOGAIN:
539 case V4L2_CID_HFLIP:
540 case V4L2_CID_VFLIP:
541 case V4L2_CID_HUE_AUTO:
542 case V4L2_CID_CHROMA_AGC:
543 case V4L2_CID_COLOR_KILLER:
544 case V4L2_CID_MPEG_AUDIO_MUTE:
545 case V4L2_CID_MPEG_VIDEO_MUTE:
546 case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE:
547 case V4L2_CID_MPEG_VIDEO_PULLDOWN:
548 case V4L2_CID_EXPOSURE_AUTO_PRIORITY:
549 case V4L2_CID_FOCUS_AUTO:
550 case V4L2_CID_PRIVACY:
551 case V4L2_CID_AUDIO_LIMITER_ENABLED:
552 case V4L2_CID_AUDIO_COMPRESSION_ENABLED:
553 case V4L2_CID_PILOT_TONE_ENABLED:
554 qctrl->type = V4L2_CTRL_TYPE_BOOLEAN;
555 min = 0;
556 max = step = 1;
557 break;
558 case V4L2_CID_PAN_RESET:
559 case V4L2_CID_TILT_RESET:
560 qctrl->type = V4L2_CTRL_TYPE_BUTTON;
561 qctrl->flags |= V4L2_CTRL_FLAG_WRITE_ONLY;
562 min = max = step = def = 0;
563 break;
564 case V4L2_CID_POWER_LINE_FREQUENCY:
565 case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
566 case V4L2_CID_MPEG_AUDIO_ENCODING:
567 case V4L2_CID_MPEG_AUDIO_L1_BITRATE:
568 case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
569 case V4L2_CID_MPEG_AUDIO_L3_BITRATE:
570 case V4L2_CID_MPEG_AUDIO_AC3_BITRATE:
571 case V4L2_CID_MPEG_AUDIO_MODE:
572 case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION:
573 case V4L2_CID_MPEG_AUDIO_EMPHASIS:
574 case V4L2_CID_MPEG_AUDIO_CRC:
575 case V4L2_CID_MPEG_VIDEO_ENCODING:
576 case V4L2_CID_MPEG_VIDEO_ASPECT:
577 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
578 case V4L2_CID_MPEG_STREAM_TYPE:
579 case V4L2_CID_MPEG_STREAM_VBI_FMT:
580 case V4L2_CID_EXPOSURE_AUTO:
581 case V4L2_CID_COLORFX:
582 case V4L2_CID_TUNE_PREEMPHASIS:
583 qctrl->type = V4L2_CTRL_TYPE_MENU;
584 step = 1;
585 break;
586 case V4L2_CID_RDS_TX_PS_NAME:
587 case V4L2_CID_RDS_TX_RADIO_TEXT:
588 qctrl->type = V4L2_CTRL_TYPE_STRING;
589 break;
590 case V4L2_CID_USER_CLASS:
591 case V4L2_CID_CAMERA_CLASS:
592 case V4L2_CID_MPEG_CLASS:
593 case V4L2_CID_FM_TX_CLASS:
594 qctrl->type = V4L2_CTRL_TYPE_CTRL_CLASS;
595 qctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
596 min = max = step = def = 0;
597 break;
598 case V4L2_CID_BG_COLOR:
599 qctrl->type = V4L2_CTRL_TYPE_INTEGER;
600 step = 1;
601 min = 0;
602 /* Max is calculated as RGB888 that is 2^24 */
603 max = 0xFFFFFF;
604 break;
605 default:
606 qctrl->type = V4L2_CTRL_TYPE_INTEGER;
607 break;
608 }
609 switch (qctrl->id) {
610 case V4L2_CID_MPEG_AUDIO_ENCODING:
611 case V4L2_CID_MPEG_AUDIO_MODE:
612 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
613 case V4L2_CID_MPEG_VIDEO_B_FRAMES:
614 case V4L2_CID_MPEG_STREAM_TYPE:
615 qctrl->flags |= V4L2_CTRL_FLAG_UPDATE;
616 break;
617 case V4L2_CID_AUDIO_VOLUME:
618 case V4L2_CID_AUDIO_BALANCE:
619 case V4L2_CID_AUDIO_BASS:
620 case V4L2_CID_AUDIO_TREBLE:
621 case V4L2_CID_BRIGHTNESS:
622 case V4L2_CID_CONTRAST:
623 case V4L2_CID_SATURATION:
624 case V4L2_CID_HUE:
625 case V4L2_CID_RED_BALANCE:
626 case V4L2_CID_BLUE_BALANCE:
627 case V4L2_CID_GAMMA:
628 case V4L2_CID_SHARPNESS:
629 case V4L2_CID_CHROMA_GAIN:
630 case V4L2_CID_RDS_TX_DEVIATION:
631 case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME:
632 case V4L2_CID_AUDIO_LIMITER_DEVIATION:
633 case V4L2_CID_AUDIO_COMPRESSION_GAIN:
634 case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD:
635 case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME:
636 case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME:
637 case V4L2_CID_PILOT_TONE_DEVIATION:
638 case V4L2_CID_PILOT_TONE_FREQUENCY:
639 case V4L2_CID_TUNE_POWER_LEVEL:
640 case V4L2_CID_TUNE_ANTENNA_CAPACITOR:
641 qctrl->flags |= V4L2_CTRL_FLAG_SLIDER;
642 break;
643 case V4L2_CID_PAN_RELATIVE:
644 case V4L2_CID_TILT_RELATIVE:
645 case V4L2_CID_FOCUS_RELATIVE:
646 case V4L2_CID_ZOOM_RELATIVE:
647 qctrl->flags |= V4L2_CTRL_FLAG_WRITE_ONLY;
648 break;
649 }
650 qctrl->minimum = min;
651 qctrl->maximum = max;
652 qctrl->step = step;
653 qctrl->default_value = def;
654 qctrl->reserved[0] = qctrl->reserved[1] = 0;
655 strlcpy(qctrl->name, name, sizeof(qctrl->name));
656 return 0;
657 }
658 EXPORT_SYMBOL(v4l2_ctrl_query_fill);
659
660 /* Fill in a struct v4l2_querymenu based on the struct v4l2_queryctrl and
661 the menu. The qctrl pointer may be NULL, in which case it is ignored.
662 If menu_items is NULL, then the menu items are retrieved using
663 v4l2_ctrl_get_menu. */
664 int v4l2_ctrl_query_menu(struct v4l2_querymenu *qmenu, struct v4l2_queryctrl *qctrl,
665 const char **menu_items)
666 {
667 int i;
668
669 qmenu->reserved = 0;
670 if (menu_items == NULL)
671 menu_items = v4l2_ctrl_get_menu(qmenu->id);
672 if (menu_items == NULL ||
673 (qctrl && (qmenu->index < qctrl->minimum || qmenu->index > qctrl->maximum)))
674 return -EINVAL;
675 for (i = 0; i < qmenu->index && menu_items[i]; i++) ;
676 if (menu_items[i] == NULL || menu_items[i][0] == '\0')
677 return -EINVAL;
678 strlcpy(qmenu->name, menu_items[qmenu->index], sizeof(qmenu->name));
679 return 0;
680 }
681 EXPORT_SYMBOL(v4l2_ctrl_query_menu);
682
683 /* Fill in a struct v4l2_querymenu based on the specified array of valid
684 menu items (terminated by V4L2_CTRL_MENU_IDS_END).
685 Use this if there are 'holes' in the list of valid menu items. */
686 int v4l2_ctrl_query_menu_valid_items(struct v4l2_querymenu *qmenu, const u32 *ids)
687 {
688 const char **menu_items = v4l2_ctrl_get_menu(qmenu->id);
689
690 qmenu->reserved = 0;
691 if (menu_items == NULL || ids == NULL)
692 return -EINVAL;
693 while (*ids != V4L2_CTRL_MENU_IDS_END) {
694 if (*ids++ == qmenu->index) {
695 strlcpy(qmenu->name, menu_items[qmenu->index],
696 sizeof(qmenu->name));
697 return 0;
698 }
699 }
700 return -EINVAL;
701 }
702 EXPORT_SYMBOL(v4l2_ctrl_query_menu_valid_items);
703
704 /* ctrl_classes points to an array of u32 pointers, the last element is
705 a NULL pointer. Each u32 array is a 0-terminated array of control IDs.
706 Each array must be sorted low to high and belong to the same control
707 class. The array of u32 pointers must also be sorted, from low class IDs
708 to high class IDs.
709
710 This function returns the first ID that follows after the given ID.
711 When no more controls are available 0 is returned. */
712 u32 v4l2_ctrl_next(const u32 * const * ctrl_classes, u32 id)
713 {
714 u32 ctrl_class = V4L2_CTRL_ID2CLASS(id);
715 const u32 *pctrl;
716
717 if (ctrl_classes == NULL)
718 return 0;
719
720 /* if no query is desired, then check if the ID is part of ctrl_classes */
721 if ((id & V4L2_CTRL_FLAG_NEXT_CTRL) == 0) {
722 /* find class */
723 while (*ctrl_classes && V4L2_CTRL_ID2CLASS(**ctrl_classes) != ctrl_class)
724 ctrl_classes++;
725 if (*ctrl_classes == NULL)
726 return 0;
727 pctrl = *ctrl_classes;
728 /* find control ID */
729 while (*pctrl && *pctrl != id) pctrl++;
730 return *pctrl ? id : 0;
731 }
732 id &= V4L2_CTRL_ID_MASK;
733 id++; /* select next control */
734 /* find first class that matches (or is greater than) the class of
735 the ID */
736 while (*ctrl_classes && V4L2_CTRL_ID2CLASS(**ctrl_classes) < ctrl_class)
737 ctrl_classes++;
738 /* no more classes */
739 if (*ctrl_classes == NULL)
740 return 0;
741 pctrl = *ctrl_classes;
742 /* find first ctrl within the class that is >= ID */
743 while (*pctrl && *pctrl < id) pctrl++;
744 if (*pctrl)
745 return *pctrl;
746 /* we are at the end of the controls of the current class. */
747 /* continue with next class if available */
748 ctrl_classes++;
749 if (*ctrl_classes == NULL)
750 return 0;
751 return **ctrl_classes;
752 }
753 EXPORT_SYMBOL(v4l2_ctrl_next);
754
755 int v4l2_chip_match_host(const struct v4l2_dbg_match *match)
756 {
757 switch (match->type) {
758 case V4L2_CHIP_MATCH_HOST:
759 return match->addr == 0;
760 default:
761 return 0;
762 }
763 }
764 EXPORT_SYMBOL(v4l2_chip_match_host);
765
766 #if defined(CONFIG_I2C) || (defined(CONFIG_I2C_MODULE) && defined(MODULE))
767 int v4l2_chip_match_i2c_client(struct i2c_client *c, const struct v4l2_dbg_match *match)
768 {
769 int len;
770
771 if (c == NULL || match == NULL)
772 return 0;
773
774 switch (match->type) {
775 case V4L2_CHIP_MATCH_I2C_DRIVER:
776 if (c->driver == NULL || c->driver->driver.name == NULL)
777 return 0;
778 len = strlen(c->driver->driver.name);
779 /* legacy drivers have a ' suffix, don't try to match that */
780 if (len && c->driver->driver.name[len - 1] == '\'')
781 len--;
782 return len && !strncmp(c->driver->driver.name, match->name, len);
783 case V4L2_CHIP_MATCH_I2C_ADDR:
784 return c->addr == match->addr;
785 default:
786 return 0;
787 }
788 }
789 EXPORT_SYMBOL(v4l2_chip_match_i2c_client);
790
791 int v4l2_chip_ident_i2c_client(struct i2c_client *c, struct v4l2_dbg_chip_ident *chip,
792 u32 ident, u32 revision)
793 {
794 if (!v4l2_chip_match_i2c_client(c, &chip->match))
795 return 0;
796 if (chip->ident == V4L2_IDENT_NONE) {
797 chip->ident = ident;
798 chip->revision = revision;
799 }
800 else {
801 chip->ident = V4L2_IDENT_AMBIGUOUS;
802 chip->revision = 0;
803 }
804 return 0;
805 }
806 EXPORT_SYMBOL(v4l2_chip_ident_i2c_client);
807
808 /* ----------------------------------------------------------------- */
809
810 /* I2C Helper functions */
811
812
813 void v4l2_i2c_subdev_init(struct v4l2_subdev *sd, struct i2c_client *client,
814 const struct v4l2_subdev_ops *ops)
815 {
816 v4l2_subdev_init(sd, ops);
817 sd->flags |= V4L2_SUBDEV_FL_IS_I2C;
818 /* the owner is the same as the i2c_client's driver owner */
819 sd->owner = client->driver->driver.owner;
820 /* i2c_client and v4l2_subdev point to one another */
821 v4l2_set_subdevdata(sd, client);
822 i2c_set_clientdata(client, sd);
823 /* initialize name */
824 snprintf(sd->name, sizeof(sd->name), "%s %d-%04x",
825 client->driver->driver.name, i2c_adapter_id(client->adapter),
826 client->addr);
827 }
828 EXPORT_SYMBOL_GPL(v4l2_i2c_subdev_init);
829
830
831
832 /* Load an i2c sub-device. */
833 struct v4l2_subdev *v4l2_i2c_new_subdev_board(struct v4l2_device *v4l2_dev,
834 struct i2c_adapter *adapter, const char *module_name,
835 struct i2c_board_info *info, const unsigned short *probe_addrs)
836 {
837 struct v4l2_subdev *sd = NULL;
838 struct i2c_client *client;
839
840 BUG_ON(!v4l2_dev);
841
842 if (module_name)
843 request_module(module_name);
844
845 /* Create the i2c client */
846 if (info->addr == 0 && probe_addrs)
847 client = i2c_new_probed_device(adapter, info, probe_addrs);
848 else
849 client = i2c_new_device(adapter, info);
850
851 /* Note: by loading the module first we are certain that c->driver
852 will be set if the driver was found. If the module was not loaded
853 first, then the i2c core tries to delay-load the module for us,
854 and then c->driver is still NULL until the module is finally
855 loaded. This delay-load mechanism doesn't work if other drivers
856 want to use the i2c device, so explicitly loading the module
857 is the best alternative. */
858 if (client == NULL || client->driver == NULL)
859 goto error;
860
861 /* Lock the module so we can safely get the v4l2_subdev pointer */
862 if (!try_module_get(client->driver->driver.owner))
863 goto error;
864 sd = i2c_get_clientdata(client);
865
866 /* Register with the v4l2_device which increases the module's
867 use count as well. */
868 if (v4l2_device_register_subdev(v4l2_dev, sd))
869 sd = NULL;
870 /* Decrease the module use count to match the first try_module_get. */
871 module_put(client->driver->driver.owner);
872
873 if (sd) {
874 /* We return errors from v4l2_subdev_call only if we have the
875 callback as the .s_config is not mandatory */
876 int err = v4l2_subdev_call(sd, core, s_config,
877 info->irq, info->platform_data);
878
879 if (err && err != -ENOIOCTLCMD) {
880 v4l2_device_unregister_subdev(sd);
881 sd = NULL;
882 }
883 }
884
885 error:
886 /* If we have a client but no subdev, then something went wrong and
887 we must unregister the client. */
888 if (client && sd == NULL)
889 i2c_unregister_device(client);
890 return sd;
891 }
892 EXPORT_SYMBOL_GPL(v4l2_i2c_new_subdev_board);
893
894 struct v4l2_subdev *v4l2_i2c_new_subdev_cfg(struct v4l2_device *v4l2_dev,
895 struct i2c_adapter *adapter,
896 const char *module_name, const char *client_type,
897 int irq, void *platform_data,
898 u8 addr, const unsigned short *probe_addrs)
899 {
900 struct i2c_board_info info;
901
902 /* Setup the i2c board info with the device type and
903 the device address. */
904 memset(&info, 0, sizeof(info));
905 strlcpy(info.type, client_type, sizeof(info.type));
906 info.addr = addr;
907 info.irq = irq;
908 info.platform_data = platform_data;
909
910 return v4l2_i2c_new_subdev_board(v4l2_dev, adapter, module_name,
911 &info, probe_addrs);
912 }
913 EXPORT_SYMBOL_GPL(v4l2_i2c_new_subdev_cfg);
914
915 /* Return i2c client address of v4l2_subdev. */
916 unsigned short v4l2_i2c_subdev_addr(struct v4l2_subdev *sd)
917 {
918 struct i2c_client *client = v4l2_get_subdevdata(sd);
919
920 return client ? client->addr : I2C_CLIENT_END;
921 }
922 EXPORT_SYMBOL_GPL(v4l2_i2c_subdev_addr);
923
924 /* Return a list of I2C tuner addresses to probe. Use only if the tuner
925 addresses are unknown. */
926 const unsigned short *v4l2_i2c_tuner_addrs(enum v4l2_i2c_tuner_type type)
927 {
928 static const unsigned short radio_addrs[] = {
929 #if defined(CONFIG_MEDIA_TUNER_TEA5761) || defined(CONFIG_MEDIA_TUNER_TEA5761_MODULE)
930 0x10,
931 #endif
932 0x60,
933 I2C_CLIENT_END
934 };
935 static const unsigned short demod_addrs[] = {
936 0x42, 0x43, 0x4a, 0x4b,
937 I2C_CLIENT_END
938 };
939 static const unsigned short tv_addrs[] = {
940 0x42, 0x43, 0x4a, 0x4b, /* tda8290 */
941 0x60, 0x61, 0x62, 0x63, 0x64,
942 I2C_CLIENT_END
943 };
944
945 switch (type) {
946 case ADDRS_RADIO:
947 return radio_addrs;
948 case ADDRS_DEMOD:
949 return demod_addrs;
950 case ADDRS_TV:
951 return tv_addrs;
952 case ADDRS_TV_WITH_DEMOD:
953 return tv_addrs + 4;
954 }
955 return NULL;
956 }
957 EXPORT_SYMBOL_GPL(v4l2_i2c_tuner_addrs);
958
959 #endif /* defined(CONFIG_I2C) */
960
961 #if defined(CONFIG_SPI)
962
963 /* Load a spi sub-device. */
964
965 void v4l2_spi_subdev_init(struct v4l2_subdev *sd, struct spi_device *spi,
966 const struct v4l2_subdev_ops *ops)
967 {
968 v4l2_subdev_init(sd, ops);
969 sd->flags |= V4L2_SUBDEV_FL_IS_SPI;
970 /* the owner is the same as the spi_device's driver owner */
971 sd->owner = spi->dev.driver->owner;
972 /* spi_device and v4l2_subdev point to one another */
973 v4l2_set_subdevdata(sd, spi);
974 spi_set_drvdata(spi, sd);
975 /* initialize name */
976 strlcpy(sd->name, spi->dev.driver->name, sizeof(sd->name));
977 }
978 EXPORT_SYMBOL_GPL(v4l2_spi_subdev_init);
979
980 struct v4l2_subdev *v4l2_spi_new_subdev(struct v4l2_device *v4l2_dev,
981 struct spi_master *master, struct spi_board_info *info)
982 {
983 struct v4l2_subdev *sd = NULL;
984 struct spi_device *spi = NULL;
985
986 BUG_ON(!v4l2_dev);
987
988 if (info->modalias)
989 request_module(info->modalias);
990
991 spi = spi_new_device(master, info);
992
993 if (spi == NULL || spi->dev.driver == NULL)
994 goto error;
995
996 if (!try_module_get(spi->dev.driver->owner))
997 goto error;
998
999 sd = spi_get_drvdata(spi);
1000
1001 /* Register with the v4l2_device which increases the module's
1002 use count as well. */
1003 if (v4l2_device_register_subdev(v4l2_dev, sd))
1004 sd = NULL;
1005
1006 /* Decrease the module use count to match the first try_module_get. */
1007 module_put(spi->dev.driver->owner);
1008
1009 error:
1010 /* If we have a client but no subdev, then something went wrong and
1011 we must unregister the client. */
1012 if (spi && sd == NULL)
1013 spi_unregister_device(spi);
1014
1015 return sd;
1016 }
1017 EXPORT_SYMBOL_GPL(v4l2_spi_new_subdev);
1018
1019 #endif /* defined(CONFIG_SPI) */
1020
1021 /* Clamp x to be between min and max, aligned to a multiple of 2^align. min
1022 * and max don't have to be aligned, but there must be at least one valid
1023 * value. E.g., min=17,max=31,align=4 is not allowed as there are no multiples
1024 * of 16 between 17 and 31. */
1025 static unsigned int clamp_align(unsigned int x, unsigned int min,
1026 unsigned int max, unsigned int align)
1027 {
1028 /* Bits that must be zero to be aligned */
1029 unsigned int mask = ~((1 << align) - 1);
1030
1031 /* Round to nearest aligned value */
1032 if (align)
1033 x = (x + (1 << (align - 1))) & mask;
1034
1035 /* Clamp to aligned value of min and max */
1036 if (x < min)
1037 x = (min + ~mask) & mask;
1038 else if (x > max)
1039 x = max & mask;
1040
1041 return x;
1042 }
1043
1044 /* Bound an image to have a width between wmin and wmax, and height between
1045 * hmin and hmax, inclusive. Additionally, the width will be a multiple of
1046 * 2^walign, the height will be a multiple of 2^halign, and the overall size
1047 * (width*height) will be a multiple of 2^salign. The image may be shrunk
1048 * or enlarged to fit the alignment constraints.
1049 *
1050 * The width or height maximum must not be smaller than the corresponding
1051 * minimum. The alignments must not be so high there are no possible image
1052 * sizes within the allowed bounds. wmin and hmin must be at least 1
1053 * (don't use 0). If you don't care about a certain alignment, specify 0,
1054 * as 2^0 is 1 and one byte alignment is equivalent to no alignment. If
1055 * you only want to adjust downward, specify a maximum that's the same as
1056 * the initial value.
1057 */
1058 void v4l_bound_align_image(u32 *w, unsigned int wmin, unsigned int wmax,
1059 unsigned int walign,
1060 u32 *h, unsigned int hmin, unsigned int hmax,
1061 unsigned int halign, unsigned int salign)
1062 {
1063 *w = clamp_align(*w, wmin, wmax, walign);
1064 *h = clamp_align(*h, hmin, hmax, halign);
1065
1066 /* Usually we don't need to align the size and are done now. */
1067 if (!salign)
1068 return;
1069
1070 /* How much alignment do we have? */
1071 walign = __ffs(*w);
1072 halign = __ffs(*h);
1073 /* Enough to satisfy the image alignment? */
1074 if (walign + halign < salign) {
1075 /* Max walign where there is still a valid width */
1076 unsigned int wmaxa = __fls(wmax ^ (wmin - 1));
1077 /* Max halign where there is still a valid height */
1078 unsigned int hmaxa = __fls(hmax ^ (hmin - 1));
1079
1080 /* up the smaller alignment until we have enough */
1081 do {
1082 if (halign >= hmaxa ||
1083 (walign <= halign && walign < wmaxa)) {
1084 *w = clamp_align(*w, wmin, wmax, walign + 1);
1085 walign = __ffs(*w);
1086 } else {
1087 *h = clamp_align(*h, hmin, hmax, halign + 1);
1088 halign = __ffs(*h);
1089 }
1090 } while (halign + walign < salign);
1091 }
1092 }
1093 EXPORT_SYMBOL_GPL(v4l_bound_align_image);
1094
1095 /**
1096 * v4l_fill_dv_preset_info - fill description of a digital video preset
1097 * @preset - preset value
1098 * @info - pointer to struct v4l2_dv_enum_preset
1099 *
1100 * drivers can use this helper function to fill description of dv preset
1101 * in info.
1102 */
1103 int v4l_fill_dv_preset_info(u32 preset, struct v4l2_dv_enum_preset *info)
1104 {
1105 static const struct v4l2_dv_preset_info {
1106 u16 width;
1107 u16 height;
1108 const char *name;
1109 } dv_presets[] = {
1110 { 0, 0, "Invalid" }, /* V4L2_DV_INVALID */
1111 { 720, 480, "480p@59.94" }, /* V4L2_DV_480P59_94 */
1112 { 720, 576, "576p@50" }, /* V4L2_DV_576P50 */
1113 { 1280, 720, "720p@24" }, /* V4L2_DV_720P24 */
1114 { 1280, 720, "720p@25" }, /* V4L2_DV_720P25 */
1115 { 1280, 720, "720p@30" }, /* V4L2_DV_720P30 */
1116 { 1280, 720, "720p@50" }, /* V4L2_DV_720P50 */
1117 { 1280, 720, "720p@59.94" }, /* V4L2_DV_720P59_94 */
1118 { 1280, 720, "720p@60" }, /* V4L2_DV_720P60 */
1119 { 1920, 1080, "1080i@29.97" }, /* V4L2_DV_1080I29_97 */
1120 { 1920, 1080, "1080i@30" }, /* V4L2_DV_1080I30 */
1121 { 1920, 1080, "1080i@25" }, /* V4L2_DV_1080I25 */
1122 { 1920, 1080, "1080i@50" }, /* V4L2_DV_1080I50 */
1123 { 1920, 1080, "1080i@60" }, /* V4L2_DV_1080I60 */
1124 { 1920, 1080, "1080p@24" }, /* V4L2_DV_1080P24 */
1125 { 1920, 1080, "1080p@25" }, /* V4L2_DV_1080P25 */
1126 { 1920, 1080, "1080p@30" }, /* V4L2_DV_1080P30 */
1127 { 1920, 1080, "1080p@50" }, /* V4L2_DV_1080P50 */
1128 { 1920, 1080, "1080p@60" }, /* V4L2_DV_1080P60 */
1129 };
1130
1131 if (info == NULL || preset >= ARRAY_SIZE(dv_presets))
1132 return -EINVAL;
1133
1134 info->preset = preset;
1135 info->width = dv_presets[preset].width;
1136 info->height = dv_presets[preset].height;
1137 strlcpy(info->name, dv_presets[preset].name, sizeof(info->name));
1138 return 0;
1139 }
1140 EXPORT_SYMBOL_GPL(v4l_fill_dv_preset_info);
Linux kernel - Deliverables
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