aboutsummaryrefslogtreecommitdiff
path: root/drivers/media/video/v4l2-common.c
blob: d330fa985bcc2049e4fbba5d16dc6af496583789 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
/*
 *	Video for Linux Two
 *
 *	A generic video device interface for the LINUX operating system
 *	using a set of device structures/vectors for low level operations.
 *
 *	This file replaces the videodev.c file that comes with the
 *	regular kernel distribution.
 *
 *	This program is free software; you can redistribute it and/or
 *	modify it under the terms of the GNU General Public License
 *	as published by the Free Software Foundation; either version
 *	2 of the License, or (at your option) any later version.
 *
 * Author:	Bill Dirks <bdirks@pacbell.net>
 *		based on code by Alan Cox, <alan@cymru.net>
 *
 */

/*
 * Video capture interface for Linux
 *
 *	A generic video device interface for the LINUX operating system
 *	using a set of device structures/vectors for low level operations.
 *
 *		This program is free software; you can redistribute it and/or
 *		modify it under the terms of the GNU General Public License
 *		as published by the Free Software Foundation; either version
 *		2 of the License, or (at your option) any later version.
 *
 * Author:	Alan Cox, <alan@redhat.com>
 *
 * Fixes:
 */

/*
 * Video4linux 1/2 integration by Justin Schoeman
 * <justin@suntiger.ee.up.ac.za>
 * 2.4 PROCFS support ported from 2.4 kernels by
 *  Iñaki García Etxebarria <garetxe@euskalnet.net>
 * Makefile fix by "W. Michael Petullo" <mike@flyn.org>
 * 2.4 devfs support ported from 2.4 kernels by
 *  Dan Merillat <dan@merillat.org>
 * Added Gerd Knorrs v4l1 enhancements (Justin Schoeman)
 */

#include <linux/config.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/smp_lock.h>
#include <linux/mm.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <asm/uaccess.h>
#include <asm/system.h>
#include <asm/pgtable.h>
#include <asm/io.h>
#include <asm/div64.h>
#include <linux/video_decoder.h>
#include <media/v4l2-common.h>

#ifdef CONFIG_KMOD
#include <linux/kmod.h>
#endif

#if defined(CONFIG_UST) || defined(CONFIG_UST_MODULE)
#include <linux/ust.h>
#endif


#include <linux/videodev.h>

MODULE_AUTHOR("Bill Dirks, Justin Schoeman, Gerd Knorr");
MODULE_DESCRIPTION("misc helper functions for v4l2 device drivers");
MODULE_LICENSE("GPL");

/*
 *
 *	V 4 L 2   D R I V E R   H E L P E R   A P I
 *
 */

/*
 *  Video Standard Operations (contributed by Michael Schimek)
 */


/* Fill in the fields of a v4l2_standard structure according to the
   'id' and 'transmission' parameters.  Returns negative on error.  */
int v4l2_video_std_construct(struct v4l2_standard *vs,
			     int id, char *name)
{
	u32 index = vs->index;

	memset(vs, 0, sizeof(struct v4l2_standard));
	vs->index = index;
	vs->id    = id;
	if (id & V4L2_STD_525_60) {
		vs->frameperiod.numerator = 1001;
		vs->frameperiod.denominator = 30000;
		vs->framelines = 525;
	} else {
		vs->frameperiod.numerator = 1;
		vs->frameperiod.denominator = 25;
		vs->framelines = 625;
	}
	strlcpy(vs->name,name,sizeof(vs->name));
	return 0;
}

/* ----------------------------------------------------------------- */
/* priority handling                                                 */

#define V4L2_PRIO_VALID(val) (val == V4L2_PRIORITY_BACKGROUND   || \
			      val == V4L2_PRIORITY_INTERACTIVE  || \
			      val == V4L2_PRIORITY_RECORD)

int v4l2_prio_init(struct v4l2_prio_state *global)
{
	memset(global,0,sizeof(*global));
	return 0;
}

int v4l2_prio_change(struct v4l2_prio_state *global, enum v4l2_priority *local,
		     enum v4l2_priority new)
{
	if (!V4L2_PRIO_VALID(new))
		return -EINVAL;
	if (*local == new)
		return 0;

	atomic_inc(&global->prios[new]);
	if (V4L2_PRIO_VALID(*local))
		atomic_dec(&global->prios[*local]);
	*local = new;
	return 0;
}

int v4l2_prio_open(struct v4l2_prio_state *global, enum v4l2_priority *local)
{
	return v4l2_prio_change(global,local,V4L2_PRIORITY_DEFAULT);
}

int v4l2_prio_close(struct v4l2_prio_state *global, enum v4l2_priority *local)
{
	if (V4L2_PRIO_VALID(*local))
		atomic_dec(&global->prios[*local]);
	return 0;
}

enum v4l2_priority v4l2_prio_max(struct v4l2_prio_state *global)
{
	if (atomic_read(&global->prios[V4L2_PRIORITY_RECORD]) > 0)
		return V4L2_PRIORITY_RECORD;
	if (atomic_read(&global->prios[V4L2_PRIORITY_INTERACTIVE]) > 0)
		return V4L2_PRIORITY_INTERACTIVE;
	if (atomic_read(&global->prios[V4L2_PRIORITY_BACKGROUND]) > 0)
		return V4L2_PRIORITY_BACKGROUND;
	return V4L2_PRIORITY_UNSET;
}

int v4l2_prio_check(struct v4l2_prio_state *global, enum v4l2_priority *local)
{
	if (*local < v4l2_prio_max(global))
		return -EBUSY;
	return 0;
}


/* ----------------------------------------------------------------- */
/* some arrays for pretty-printing debug messages of enum types      */

char *v4l2_field_names[] = {
	[V4L2_FIELD_ANY]        = "any",
	[V4L2_FIELD_NONE]       = "none",
	[V4L2_FIELD_TOP]        = "top",
	[V4L2_FIELD_BOTTOM]     = "bottom",
	[V4L2_FIELD_INTERLACED] = "interlaced",
	[V4L2_FIELD_SEQ_TB]     = "seq-tb",
	[V4L2_FIELD_SEQ_BT]     = "seq-bt",
	[V4L2_FIELD_ALTERNATE]  = "alternate",
};

char *v4l2_type_names[] = {
	[V4L2_BUF_TYPE_VIDEO_CAPTURE] = "video-cap",
	[V4L2_BUF_TYPE_VIDEO_OVERLAY] = "video-over",
	[V4L2_BUF_TYPE_VIDEO_OUTPUT]  = "video-out",
	[V4L2_BUF_TYPE_VBI_CAPTURE]   = "vbi-cap",
	[V4L2_BUF_TYPE_VBI_OUTPUT]    = "vbi-out",
};

static char *v4l2_memory_names[] = {
	[V4L2_MEMORY_MMAP]    = "mmap",
	[V4L2_MEMORY_USERPTR] = "userptr",
	[V4L2_MEMORY_OVERLAY] = "overlay",
};

#define prt_names(a,arr) (((a)>=0)&&((a)<ARRAY_SIZE(arr)))?arr[a]:"unknown"

/* ------------------------------------------------------------------ */
/* debug help functions                                               */

#ifdef HAVE_V4L1
static const char *v4l1_ioctls[] = {
	[_IOC_NR(VIDIOCGCAP)]       = "VIDIOCGCAP",
	[_IOC_NR(VIDIOCGCHAN)]      = "VIDIOCGCHAN",
	[_IOC_NR(VIDIOCSCHAN)]      = "VIDIOCSCHAN",
	[_IOC_NR(VIDIOCGTUNER)]     = "VIDIOCGTUNER",
	[_IOC_NR(VIDIOCSTUNER)]     = "VIDIOCSTUNER",
	[_IOC_NR(VIDIOCGPICT)]      = "VIDIOCGPICT",
	[_IOC_NR(VIDIOCSPICT)]      = "VIDIOCSPICT",
	[_IOC_NR(VIDIOCCAPTURE)]    = "VIDIOCCAPTURE",
	[_IOC_NR(VIDIOCGWIN)]       = "VIDIOCGWIN",
	[_IOC_NR(VIDIOCSWIN)]       = "VIDIOCSWIN",
	[_IOC_NR(VIDIOCGFBUF)]      = "VIDIOCGFBUF",
	[_IOC_NR(VIDIOCSFBUF)]      = "VIDIOCSFBUF",
	[_IOC_NR(VIDIOCKEY)]        = "VIDIOCKEY",
	[_IOC_NR(VIDIOCGFREQ)]      = "VIDIOCGFREQ",
	[_IOC_NR(VIDIOCSFREQ)]      = "VIDIOCSFREQ",
	[_IOC_NR(VIDIOCGAUDIO)]     = "VIDIOCGAUDIO",
	[_IOC_NR(VIDIOCSAUDIO)]     = "VIDIOCSAUDIO",
	[_IOC_NR(VIDIOCSYNC)]       = "VIDIOCSYNC",
	[_IOC_NR(VIDIOCMCAPTURE)]   = "VIDIOCMCAPTURE",
	[_IOC_NR(VIDIOCGMBUF)]      = "VIDIOCGMBUF",
	[_IOC_NR(VIDIOCGUNIT)]      = "VIDIOCGUNIT",
	[_IOC_NR(VIDIOCGCAPTURE)]   = "VIDIOCGCAPTURE",
	[_IOC_NR(VIDIOCSCAPTURE)]   = "VIDIOCSCAPTURE",
	[_IOC_NR(VIDIOCSPLAYMODE)]  = "VIDIOCSPLAYMODE",
	[_IOC_NR(VIDIOCSWRITEMODE)] = "VIDIOCSWRITEMODE",
	[_IOC_NR(VIDIOCGPLAYINFO)]  = "VIDIOCGPLAYINFO",
	[_IOC_NR(VIDIOCSMICROCODE)] = "VIDIOCSMICROCODE",
	[_IOC_NR(VIDIOCGVBIFMT)]    = "VIDIOCGVBIFMT",
	[_IOC_NR(VIDIOCSVBIFMT)]    = "VIDIOCSVBIFMT"
};
#define V4L1_IOCTLS ARRAY_SIZE(v4l1_ioctls)
#endif

static const char *v4l2_ioctls[] = {
	[_IOC_NR(VIDIOC_QUERYCAP)]         = "VIDIOC_QUERYCAP",
	[_IOC_NR(VIDIOC_RESERVED)]         = "VIDIOC_RESERVED",
	[_IOC_NR(VIDIOC_ENUM_FMT)]         = "VIDIOC_ENUM_FMT",
	[_IOC_NR(VIDIOC_G_FMT)]            = "VIDIOC_G_FMT",
	[_IOC_NR(VIDIOC_S_FMT)]            = "VIDIOC_S_FMT",
	[_IOC_NR(VIDIOC_G_MPEGCOMP)]       = "VIDIOC_G_MPEGCOMP",
	[_IOC_NR(VIDIOC_S_MPEGCOMP)]       = "VIDIOC_S_MPEGCOMP",
	[_IOC_NR(VIDIOC_REQBUFS)]          = "VIDIOC_REQBUFS",
	[_IOC_NR(VIDIOC_QUERYBUF)]         = "VIDIOC_QUERYBUF",
	[_IOC_NR(VIDIOC_G_FBUF)]           = "VIDIOC_G_FBUF",
	[_IOC_NR(VIDIOC_S_FBUF)]           = "VIDIOC_S_FBUF",
	[_IOC_NR(VIDIOC_OVERLAY)]          = "VIDIOC_OVERLAY",
	[_IOC_NR(VIDIOC_QBUF)]             = "VIDIOC_QBUF",
	[_IOC_NR(VIDIOC_DQBUF)]            = "VIDIOC_DQBUF",
	[_IOC_NR(VIDIOC_STREAMON)]         = "VIDIOC_STREAMON",
	[_IOC_NR(VIDIOC_STREAMOFF)]        = "VIDIOC_STREAMOFF",
	[_IOC_NR(VIDIOC_G_PARM)]           = "VIDIOC_G_PARM",
	[_IOC_NR(VIDIOC_S_PARM)]           = "VIDIOC_S_PARM",
	[_IOC_NR(VIDIOC_G_STD)]            = "VIDIOC_G_STD",
	[_IOC_NR(VIDIOC_S_STD)]            = "VIDIOC_S_STD",
	[_IOC_NR(VIDIOC_ENUMSTD)]          = "VIDIOC_ENUMSTD",
	[_IOC_NR(VIDIOC_ENUMINPUT)]        = "VIDIOC_ENUMINPUT",
	[_IOC_NR(VIDIOC_G_CTRL)]           = "VIDIOC_G_CTRL",
	[_IOC_NR(VIDIOC_S_CTRL)]           = "VIDIOC_S_CTRL",
	[_IOC_NR(VIDIOC_G_TUNER)]          = "VIDIOC_G_TUNER",
	[_IOC_NR(VIDIOC_S_TUNER)]          = "VIDIOC_S_TUNER",
	[_IOC_NR(VIDIOC_G_AUDIO)]          = "VIDIOC_G_AUDIO",
	[_IOC_NR(VIDIOC_S_AUDIO)]          = "VIDIOC_S_AUDIO",
	[_IOC_NR(VIDIOC_QUERYCTRL)]        = "VIDIOC_QUERYCTRL",
	[_IOC_NR(VIDIOC_QUERYMENU)]        = "VIDIOC_QUERYMENU",
	[_IOC_NR(VIDIOC_G_INPUT)]          = "VIDIOC_G_INPUT",
	[_IOC_NR(VIDIOC_S_INPUT)]          = "VIDIOC_S_INPUT",
	[_IOC_NR(VIDIOC_G_OUTPUT)]         = "VIDIOC_G_OUTPUT",
	[_IOC_NR(VIDIOC_S_OUTPUT)]         = "VIDIOC_S_OUTPUT",
	[_IOC_NR(VIDIOC_ENUMOUTPUT)]       = "VIDIOC_ENUMOUTPUT",
	[_IOC_NR(VIDIOC_G_AUDOUT)]         = "VIDIOC_G_AUDOUT",
	[_IOC_NR(VIDIOC_S_AUDOUT)]         = "VIDIOC_S_AUDOUT",
	[_IOC_NR(VIDIOC_G_MODULATOR)]      = "VIDIOC_G_MODULATOR",
	[_IOC_NR(VIDIOC_S_MODULATOR)]      = "VIDIOC_S_MODULATOR",
	[_IOC_NR(VIDIOC_G_FREQUENCY)]      = "VIDIOC_G_FREQUENCY",
	[_IOC_NR(VIDIOC_S_FREQUENCY)]      = "VIDIOC_S_FREQUENCY",
	[_IOC_NR(VIDIOC_CROPCAP)]          = "VIDIOC_CROPCAP",
	[_IOC_NR(VIDIOC_G_CROP)]           = "VIDIOC_G_CROP",
	[_IOC_NR(VIDIOC_S_CROP)]           = "VIDIOC_S_CROP",
	[_IOC_NR(VIDIOC_G_JPEGCOMP)]       = "VIDIOC_G_JPEGCOMP",
	[_IOC_NR(VIDIOC_S_JPEGCOMP)]       = "VIDIOC_S_JPEGCOMP",
	[_IOC_NR(VIDIOC_QUERYSTD)]         = "VIDIOC_QUERYSTD",
	[_IOC_NR(VIDIOC_TRY_FMT)]          = "VIDIOC_TRY_FMT",
	[_IOC_NR(VIDIOC_ENUMAUDIO)]        = "VIDIOC_ENUMAUDIO",
	[_IOC_NR(VIDIOC_ENUMAUDOUT)]       = "VIDIOC_ENUMAUDOUT",
	[_IOC_NR(VIDIOC_G_PRIORITY)]       = "VIDIOC_G_PRIORITY",
	[_IOC_NR(VIDIOC_S_PRIORITY)]       = "VIDIOC_S_PRIORITY",
#if 1
	[_IOC_NR(VIDIOC_G_SLICED_VBI_CAP)] = "VIDIOC_G_SLICED_VBI_CAP",
#endif
	[_IOC_NR(VIDIOC_LOG_STATUS)]       = "VIDIOC_LOG_STATUS"
};
#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)

static const char *v4l2_int_ioctls[] = {
#ifdef HAVE_VIDEO_DECODER
	[_IOC_NR(DECODER_GET_CAPABILITIES)]    = "DECODER_GET_CAPABILITIES",
	[_IOC_NR(DECODER_GET_STATUS)]          = "DECODER_GET_STATUS",
	[_IOC_NR(DECODER_SET_NORM)]            = "DECODER_SET_NORM",
	[_IOC_NR(DECODER_SET_INPUT)]           = "DECODER_SET_INPUT",
	[_IOC_NR(DECODER_SET_OUTPUT)]          = "DECODER_SET_OUTPUT",
	[_IOC_NR(DECODER_ENABLE_OUTPUT)]       = "DECODER_ENABLE_OUTPUT",
	[_IOC_NR(DECODER_SET_PICTURE)]         = "DECODER_SET_PICTURE",
	[_IOC_NR(DECODER_SET_GPIO)]            = "DECODER_SET_GPIO",
	[_IOC_NR(DECODER_INIT)]                = "DECODER_INIT",
	[_IOC_NR(DECODER_SET_VBI_BYPASS)]      = "DECODER_SET_VBI_BYPASS",
	[_IOC_NR(DECODER_DUMP)]                = "DECODER_DUMP",
#endif
	[_IOC_NR(AUDC_SET_RADIO)]              = "AUDC_SET_RADIO",

	[_IOC_NR(TUNER_SET_TYPE_ADDR)]         = "TUNER_SET_TYPE_ADDR",
	[_IOC_NR(TUNER_SET_STANDBY)]           = "TUNER_SET_STANDBY",
	[_IOC_NR(TDA9887_SET_CONFIG)]          = "TDA9887_SET_CONFIG",

	[_IOC_NR(VIDIOC_INT_S_TUNER_MODE)]     = "VIDIOC_INT_S_TUNER_MODE",
	[_IOC_NR(VIDIOC_INT_S_REGISTER)]       = "VIDIOC_INT_S_REGISTER",
	[_IOC_NR(VIDIOC_INT_G_REGISTER)]       = "VIDIOC_INT_G_REGISTER",
	[_IOC_NR(VIDIOC_INT_RESET)]            = "VIDIOC_INT_RESET",
	[_IOC_NR(VIDIOC_INT_AUDIO_CLOCK_FREQ)] = "VIDIOC_INT_AUDIO_CLOCK_FREQ",
	[_IOC_NR(VIDIOC_INT_DECODE_VBI_LINE)]  = "VIDIOC_INT_DECODE_VBI_LINE",
	[_IOC_NR(VIDIOC_INT_S_VBI_DATA)]       = "VIDIOC_INT_S_VBI_DATA",
	[_IOC_NR(VIDIOC_INT_G_VBI_DATA)]       = "VIDIOC_INT_G_VBI_DATA",
	[_IOC_NR(VIDIOC_INT_G_CHIP_IDENT)]     = "VIDIOC_INT_G_CHIP_IDENT",
	[_IOC_NR(VIDIOC_INT_I2S_CLOCK_FREQ)]   = "VIDIOC_INT_I2S_CLOCK_FREQ",
	[_IOC_NR(VIDIOC_INT_S_STANDBY)]        = "VIDIOC_INT_S_STANDBY",
	[_IOC_NR(VIDIOC_INT_S_AUDIO_ROUTING)]  = "VIDIOC_INT_S_AUDIO_ROUTING",
	[_IOC_NR(VIDIOC_INT_G_AUDIO_ROUTING)]  = "VIDIOC_INT_G_AUDIO_ROUTING",
	[_IOC_NR(VIDIOC_INT_S_VIDEO_ROUTING)]  = "VIDIOC_INT_S_VIDEO_ROUTING",
	[_IOC_NR(VIDIOC_INT_G_VIDEO_ROUTING)]  = "VIDIOC_INT_G_VIDEO_ROUTING"
};
#define V4L2_INT_IOCTLS ARRAY_SIZE(v4l2_int_ioctls)

static void v4l_print_pix_fmt (char *s, struct v4l2_pix_format *fmt)
{
	printk ("%s: width=%d, height=%d, format=%d, field=%s, "
		"bytesperline=%d sizeimage=%d, colorspace=%d\n", s,
		fmt->width,fmt->height,fmt->pixelformat,
		prt_names(fmt->field,v4l2_field_names),
		fmt->bytesperline,fmt->sizeimage,fmt->colorspace);
};

/* Common ioctl debug function. This function can be used by
   external ioctl messages as well as internal V4L ioctl */
void v4l_printk_ioctl(unsigned int cmd)
{
	char *dir;

	switch (_IOC_DIR(cmd)) {
	case _IOC_NONE:              dir = "--"; break;
	case _IOC_READ:              dir = "r-"; break;
	case _IOC_WRITE:             dir = "-w"; break;
	case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
	default:                     dir = "*ERR*"; break;
	}
	switch (_IOC_TYPE(cmd)) {
	case 'd':
		printk("v4l2_int ioctl %s, dir=%s (0x%08x)\n",
		       (_IOC_NR(cmd) < V4L2_INT_IOCTLS) ?
		       v4l2_int_ioctls[_IOC_NR(cmd)] : "UNKNOWN", dir, cmd);
		break;
#ifdef HAVE_V4L1
	case 'v':
		printk("v4l1 ioctl %s, dir=%s (0x%08x)\n",
		       (_IOC_NR(cmd) < V4L1_IOCTLS) ?
		       v4l1_ioctls[_IOC_NR(cmd)] : "UNKNOWN", dir, cmd);
		break;
#endif
	case 'V':
		printk("v4l2 ioctl %s, dir=%s (0x%08x)\n",
		       (_IOC_NR(cmd) < V4L2_IOCTLS) ?
		       v4l2_ioctls[_IOC_NR(cmd)] : "UNKNOWN", dir, cmd);
		break;

	default:
		printk("unknown ioctl '%c', dir=%s, #%d (0x%08x)\n",
		       _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
	}
}

/* Common ioctl debug function. This function can be used by
   external ioctl messages as well as internal V4L ioctl and its
   arguments */
void v4l_printk_ioctl_arg(char *s,unsigned int cmd, void *arg)
{
	printk(s);
	printk(": ");
	v4l_printk_ioctl(cmd);
	switch (cmd) {
	case VIDIOC_INT_G_CHIP_IDENT:
	{
		enum v4l2_chip_ident  *p=arg;
		printk ("%s: chip ident=%d\n", s, *p);
		break;
	}
	case VIDIOC_G_PRIORITY:
	case VIDIOC_S_PRIORITY:
	{
		enum v4l2_priority *p=arg;
		printk ("%s: priority=%d\n", s, *p);
		break;
	}
	case VIDIOC_INT_S_TUNER_MODE:
	{
		enum v4l2_tuner_type *p=arg;
		printk ("%s: tuner type=%d\n", s, *p);
		break;
	}
	case DECODER_SET_VBI_BYPASS:
	case DECODER_ENABLE_OUTPUT:
	case DECODER_GET_STATUS:
	case DECODER_SET_OUTPUT:
	case DECODER_SET_INPUT:
	case DECODER_SET_GPIO:
	case DECODER_SET_NORM:
	case VIDIOCCAPTURE:
	case VIDIOCSYNC:
	case VIDIOCSWRITEMODE:
	case TUNER_SET_TYPE_ADDR:
	case TUNER_SET_STANDBY:
	case TDA9887_SET_CONFIG:
	case VIDIOC_OVERLAY_OLD:
	case VIDIOC_STREAMOFF:
	case VIDIOC_G_OUTPUT:
	case VIDIOC_S_OUTPUT:
	case VIDIOC_STREAMON:
	case VIDIOC_G_INPUT:
	case VIDIOC_OVERLAY:
	case VIDIOC_S_INPUT:
	{
		int *p=arg;
		printk ("%s: value=%d\n", s, *p);
		break;
	}
	case VIDIOC_G_AUDIO:
	case VIDIOC_S_AUDIO:
	case VIDIOC_ENUMAUDIO:
	case VIDIOC_G_AUDIO_OLD:
	{
		struct v4l2_audio *p=arg;

		printk ("%s: index=%d, name=%s, capability=%d, mode=%d\n",
			s,p->index, p->name,p->capability, p->mode);
		break;
	}
	case VIDIOC_G_AUDOUT:
	case VIDIOC_S_AUDOUT:
	case VIDIOC_ENUMAUDOUT:
	case VIDIOC_G_AUDOUT_OLD:
	{
		struct v4l2_audioout *p=arg;
		printk ("%s: index=%d, name=%s, capability=%d, mode=%d\n", s,
				p->index, p->name, p->capability,p->mode);
		break;
	}
	case VIDIOC_QBUF:
	case VIDIOC_DQBUF:
	case VIDIOC_QUERYBUF:
	{
		struct v4l2_buffer *p=arg;
		struct v4l2_timecode *tc=&p->timecode;
		printk ("%s: %02ld:%02d:%02d.%08ld index=%d, type=%s, "
			"bytesused=%d, flags=0x%08x, "
			"field=%0d, sequence=%d, memory=%s, offset/userptr=0x%08lx\n",
				s,
				(p->timestamp.tv_sec/3600),
				(int)(p->timestamp.tv_sec/60)%60,
				(int)(p->timestamp.tv_sec%60),
				p->timestamp.tv_usec,
				p->index,
				prt_names(p->type,v4l2_type_names),
				p->bytesused,p->flags,
				p->field,p->sequence,
				prt_names(p->memory,v4l2_memory_names),
				p->m.userptr);
		printk ("%s: timecode= %02d:%02d:%02d type=%d, "
			"flags=0x%08x, frames=%d, userbits=0x%p\n",
				s,tc->hours,tc->minutes,tc->seconds,
				tc->type, tc->flags, tc->frames, tc->userbits);
		break;
	}
	case VIDIOC_QUERYCAP:
	{
		struct v4l2_capability *p=arg;
		printk ("%s: driver=%s, card=%s, bus=%s, version=0x%08x, "
			"capabilities=0x%08x\n", s,
				p->driver,p->card,p->bus_info,
				p->version,
				p->capabilities);
		break;
	}
	case VIDIOC_G_CTRL:
	case VIDIOC_S_CTRL:
	case VIDIOC_S_CTRL_OLD:
	{
		struct v4l2_control *p=arg;
		printk ("%s: id=%d, value=%d\n", s, p->id, p->value);
		break;
	}
	case VIDIOC_G_CROP:
	case VIDIOC_S_CROP:
	{
		struct v4l2_crop *p=arg;
		/*FIXME: Should also show rect structs */
		printk ("%s: type=%d\n", s, p->type);
		break;
	}
	case VIDIOC_CROPCAP:
	case VIDIOC_CROPCAP_OLD:
	{
		struct v4l2_cropcap *p=arg;
		/*FIXME: Should also show rect structs */
		printk ("%s: type=%d\n", s, p->type);
		break;
	}
	case VIDIOC_INT_DECODE_VBI_LINE:
	{
		struct v4l2_decode_vbi_line *p=arg;
		printk ("%s: is_second_field=%d, ptr=0x%08lx, line=%d, "
			"type=%d\n", s,
				p->is_second_field,(unsigned long)p->p,p->line,p->type);
		break;
	}
	case VIDIOC_ENUM_FMT:
	{
		struct v4l2_fmtdesc *p=arg;
		printk ("%s: index=%d, type=%d, flags=%d, description=%s,"
			" pixelformat=%d\n", s,
				p->index, p->type, p->flags,p->description,
				p->pixelformat);

		break;
	}
	case VIDIOC_G_FMT:
	case VIDIOC_S_FMT:
	case VIDIOC_TRY_FMT:
	{
		struct v4l2_format *p=arg;
		printk ("%s: type=%s\n", s,
				prt_names(p->type,v4l2_type_names));
		switch (p->type) {
		case V4L2_BUF_TYPE_VIDEO_CAPTURE:
			v4l_print_pix_fmt (s, &p->fmt.pix);
			break;
		default:
			break;
		}
	}
	case VIDIOC_G_FBUF:
	case VIDIOC_S_FBUF:
	{
		struct v4l2_framebuffer *p=arg;
		printk ("%s: capability=%d, flags=%d, base=0x%08lx\n", s,
				p->capability,p->flags, (unsigned long)p->base);
		v4l_print_pix_fmt (s, &p->fmt);
		break;
	}
	case VIDIOC_G_FREQUENCY:
	case VIDIOC_S_FREQUENCY:
	{
		struct v4l2_frequency *p=arg;
		printk ("%s: tuner=%d, type=%d, frequency=%d\n", s,
				p->tuner,p->type,p->frequency);
		break;
	}
	case VIDIOC_ENUMINPUT:
	{
		struct v4l2_input *p=arg;
		printk ("%s: index=%d, name=%s, type=%d, audioset=%d, "
			"tuner=%d, std=%Ld, status=%d\n", s,
				p->index,p->name,p->type,p->audioset,
				p->tuner,
				(unsigned long long)p->std,
				p->status);
		break;
	}
	case VIDIOC_G_JPEGCOMP:
	case VIDIOC_S_JPEGCOMP:
	{
		struct v4l2_jpegcompression *p=arg;
		printk ("%s: quality=%d, APPn=%d, APP_len=%d, COM_len=%d,"
			" jpeg_markers=%d\n", s,
				p->quality,p->APPn,p->APP_len,
				p->COM_len,p->jpeg_markers);
		break;
	}
	case VIDIOC_G_MODULATOR:
	case VIDIOC_S_MODULATOR:
	{
		struct v4l2_modulator *p=arg;
		printk ("%s: index=%d, name=%s, capability=%d, rangelow=%d,"
			" rangehigh=%d, txsubchans=%d\n", s,
				p->index, p->name,p->capability,p->rangelow,
				p->rangehigh,p->txsubchans);
		break;
	}
	case VIDIOC_G_MPEGCOMP:
	case VIDIOC_S_MPEGCOMP:
	{
		struct v4l2_mpeg_compression *p=arg;
		/*FIXME: Several fields not shown */
		printk ("%s: ts_pid_pmt=%d, ts_pid_audio=%d, ts_pid_video=%d, "
			"ts_pid_pcr=%d, ps_size=%d, au_sample_rate=%d, "
			"au_pesid=%c, vi_frame_rate=%d, vi_frames_per_gop=%d, "
			"vi_bframes_count=%d, vi_pesid=%c\n", s,
				p->ts_pid_pmt,p->ts_pid_audio, p->ts_pid_video,
				p->ts_pid_pcr, p->ps_size, p->au_sample_rate,
				p->au_pesid, p->vi_frame_rate,
				p->vi_frames_per_gop, p->vi_bframes_count,
				p->vi_pesid);
		break;
	}
	case VIDIOC_ENUMOUTPUT:
	{
		struct v4l2_output *p=arg;
		printk ("%s: index=%d, name=%s,type=%d, audioset=%d, "
			"modulator=%d, std=%Ld\n",
				s,p->index,p->name,p->type,p->audioset,
				p->modulator,
				(unsigned long long)p->std);
		break;
	}
	case VIDIOC_QUERYCTRL:
	{
		struct v4l2_queryctrl *p=arg;
		printk ("%s: id=%d, type=%d, name=%s, min/max=%d/%d,"
			" step=%d, default=%d, flags=0x%08x\n", s,
				p->id,p->type,p->name,p->minimum,p->maximum,
				p->step,p->default_value,p->flags);
		break;
	}
	case VIDIOC_QUERYMENU:
	{
		struct v4l2_querymenu *p=arg;
		printk ("%s: id=%d, index=%d, name=%s\n", s,
				p->id,p->index,p->name);
		break;
	}
	case VIDIOC_INT_G_REGISTER:
	case VIDIOC_INT_S_REGISTER:
	{
		struct v4l2_register *p=arg;
		printk ("%s: i2c_id=%d, reg=%lu, val=%d\n", s,
				p->i2c_id,p->reg,p->val);

		break;
	}
	case VIDIOC_REQBUFS:
	{
		struct v4l2_requestbuffers *p=arg;
		printk ("%s: count=%d, type=%s, memory=%s\n", s,
				p->count,
				prt_names(p->type,v4l2_type_names),
				prt_names(p->memory,v4l2_memory_names));
		break;
	}
	case VIDIOC_INT_S_AUDIO_ROUTING:
	case VIDIOC_INT_S_VIDEO_ROUTING:
	case VIDIOC_INT_G_AUDIO_ROUTING:
	case VIDIOC_INT_G_VIDEO_ROUTING:
	{
		struct v4l2_routing  *p=arg;
		printk ("%s: input=0x%x, output=0x%x\n", s, p->input, p->output);
		break;
	}
	case VIDIOC_G_SLICED_VBI_CAP:
	{
		struct v4l2_sliced_vbi_cap *p=arg;
		printk ("%s: service_set=%d\n", s,
				p->service_set);
		break;
	}
	case VIDIOC_INT_S_VBI_DATA:
	case VIDIOC_INT_G_VBI_DATA:
	{
		struct v4l2_sliced_vbi_data  *p=arg;
		printk ("%s: id=%d, field=%d, line=%d\n", s,
				p->id, p->field, p->line);
		break;
	}
	case VIDIOC_ENUMSTD:
	{
		struct v4l2_standard *p=arg;
		printk ("%s: index=%d, id=%Ld, name=%s, fps=%d/%d, "
			"framelines=%d\n", s, p->index,
				(unsigned long long)p->id, p->name,
				p->frameperiod.numerator,
				p->frameperiod.denominator,
				p->framelines);

		break;
	}
	case VIDIOC_G_PARM:
	case VIDIOC_S_PARM:
	case VIDIOC_S_PARM_OLD:
	{
		struct v4l2_streamparm *p=arg;
		printk ("%s: type=%d\n", s, p->type);

		break;
	}
	case VIDIOC_G_TUNER:
	case VIDIOC_S_TUNER:
	{
		struct v4l2_tuner *p=arg;
		printk ("%s: index=%d, name=%s, type=%d, capability=%d, "
			"rangelow=%d, rangehigh=%d, signal=%d, afc=%d, "
			"rxsubchans=%d, audmode=%d\n", s,
				p->index, p->name, p->type,
				p->capability, p->rangelow,p->rangehigh,
				p->rxsubchans, p->audmode, p->signal,
				p->afc);
		break;
	}
	case VIDIOCGVBIFMT:
	case VIDIOCSVBIFMT:
	{
		struct vbi_format *p=arg;
		printk ("%s: sampling_rate=%d, samples_per_line=%d, "
			"sample_format=%d, start=%d/%d, count=%d/%d, flags=%d\n", s,
				p->sampling_rate,p->samples_per_line,
				p->sample_format,p->start[0],p->start[1],
				p->count[0],p->count[1],p->flags);
		break;
	}
	case VIDIOCGAUDIO:
	case VIDIOCSAUDIO:
	{
		struct video_audio *p=arg;
		printk ("%s: audio=%d, volume=%d, bass=%d, treble=%d, "
			"flags=%d, name=%s, mode=%d, balance=%d, step=%d\n",
				s,p->audio,p->volume,p->bass, p->treble,
				p->flags,p->name,p->mode,p->balance,p->step);
		break;
	}
	case VIDIOCGFBUF:
	case VIDIOCSFBUF:
	{
		struct video_buffer *p=arg;
		printk ("%s: base=%08lx, height=%d, width=%d, depth=%d, "
			"bytesperline=%d\n", s,
				(unsigned long) p->base, p->height, p->width,
				p->depth,p->bytesperline);
		break;
	}
	case VIDIOCGCAP:
	{
		struct video_capability *p=arg;
		printk ("%s: name=%s, type=%d, channels=%d, audios=%d, "
			"maxwidth=%d, maxheight=%d, minwidth=%d, minheight=%d\n",
				s,p->name,p->type,p->channels,p->audios,
				p->maxwidth,p->maxheight,p->minwidth,
				p->minheight);

		break;
	}
	case VIDIOCGCAPTURE:
	case VIDIOCSCAPTURE:
	{
		struct video_capture *p=arg;
		printk ("%s: x=%d, y=%d, width=%d, height=%d, decimation=%d,"
			" flags=%d\n", s,
				p->x, p->y,p->width, p->height,
				p->decimation,p->flags);
		break;
	}
	case VIDIOCGCHAN:
	case VIDIOCSCHAN:
	{
		struct video_channel *p=arg;
		printk ("%s: channel=%d, name=%s, tuners=%d, flags=%d, "
			"type=%d, norm=%d\n", s,
				p->channel,p->name,p->tuners,
				p->flags,p->type,p->norm);

		break;
	}
	case VIDIOCSMICROCODE:
	{
		struct video_code *p=arg;
		printk ("%s: loadwhat=%s, datasize=%d\n", s,
				p->loadwhat,p->datasize);
		break;
	}
	case DECODER_GET_CAPABILITIES:
	{
		struct video_decoder_capability *p=arg;
		printk ("%s: flags=%d, inputs=%d, outputs=%d\n", s,
				p->flags,p->inputs,p->outputs);
		break;
	}
	case DECODER_INIT:
	{
		struct video_decoder_init *p=arg;
		printk ("%s: len=%c\n", s, p->len);
		break;
	}
	case VIDIOCGPLAYINFO:
	{
		struct video_info *p=arg;
		printk ("%s: frame_count=%d, h_size=%d, v_size=%d, "
			"smpte_timecode=%d, picture_type=%d, "
			"temporal_reference=%d, user_data=%s\n", s,
				p->frame_count, p->h_size,
				p->v_size, p->smpte_timecode,
				p->picture_type, p->temporal_reference,
				p->user_data);
		break;
	}
	case VIDIOCKEY:
	{
		struct video_key *p=arg;
		printk ("%s: key=%s, flags=%d\n", s,
				p->key, p->flags);
		break;
	}
	case VIDIOCGMBUF:
	{
		struct video_mbuf *p=arg;
		printk ("%s: size=%d, frames=%d, offsets=0x%08lx\n", s,
				p->size,
				p->frames,
				(unsigned long)p->offsets);
		break;
	}
	case VIDIOCMCAPTURE:
	{
		struct video_mmap *p=arg;
		printk ("%s: frame=%d, height=%d, width=%d, format=%d\n", s,
				p->frame,
				p->height, p->width,
				p->format);
		break;
	}
	case VIDIOCGPICT:
	case VIDIOCSPICT:
	case DECODER_SET_PICTURE:
	{
		struct video_picture *p=arg;

		printk ("%s: brightness=%d, hue=%d, colour=%d, contrast=%d,"
			" whiteness=%d, depth=%d, palette=%d\n", s,
				p->brightness, p->hue, p->colour,
				p->contrast, p->whiteness, p->depth,
				p->palette);
		break;
	}
	case VIDIOCSPLAYMODE:
	{
		struct video_play_mode *p=arg;
		printk ("%s: mode=%d, p1=%d, p2=%d\n", s,
				p->mode,p->p1,p->p2);
		break;
	}
	case VIDIOCGTUNER:
	case VIDIOCSTUNER:
	{
		struct video_tuner *p=arg;
		printk ("%s: tuner=%d, name=%s, rangelow=%ld, rangehigh=%ld, "
			"flags=%d, mode=%d, signal=%d\n", s,
				p->tuner, p->name,p->rangelow, p->rangehigh,
				p->flags,p->mode, p->signal);
		break;
	}
	case VIDIOCGUNIT:
	{
		struct video_unit *p=arg;
		printk ("%s: video=%d, vbi=%d, radio=%d, audio=%d, "
			"teletext=%d\n", s,
				p->video,p->vbi,p->radio,p->audio,p->teletext);
		break;
	}
	case VIDIOCGWIN:
	case VIDIOCSWIN:
	{
		struct video_window *p=arg;
		printk ("%s: x=%d, y=%d, width=%d, height=%d, chromakey=%d,"
			" flags=%d, clipcount=%d\n", s,
				p->x, p->y,p->width, p->height,
				p->chromakey,p->flags,
				p->clipcount);
		break;
	}
	case VIDIOC_INT_AUDIO_CLOCK_FREQ:
	case VIDIOC_INT_I2S_CLOCK_FREQ:
	case VIDIOC_INT_S_STANDBY:
	{
		u32 *p=arg;

		printk ("%s: value=%d\n", s, *p);
		break;
	}
	case VIDIOCGFREQ:
	case VIDIOCSFREQ:
	{
		unsigned long *p=arg;
		printk ("%s: value=%lu\n", s, *p);
		break;
	}
	case VIDIOC_G_STD:
	case VIDIOC_S_STD:
	case VIDIOC_QUERYSTD:
	{
		v4l2_std_id *p=arg;

		printk ("%s: value=%Lu\n", s, (unsigned long long)*p);
		break;
	}
	}
}

/* ----------------------------------------------------------------- */

EXPORT_SYMBOL(v4l2_video_std_construct);

EXPORT_SYMBOL(v4l2_prio_init);
EXPORT_SYMBOL(v4l2_prio_change);
EXPORT_SYMBOL(v4l2_prio_open);
EXPORT_SYMBOL(v4l2_prio_close);
EXPORT_SYMBOL(v4l2_prio_max);
EXPORT_SYMBOL(v4l2_prio_check);

EXPORT_SYMBOL(v4l2_field_names);
EXPORT_SYMBOL(v4l2_type_names);
EXPORT_SYMBOL(v4l_printk_ioctl);
EXPORT_SYMBOL(v4l_printk_ioctl_arg);

/*
 * Local variables:
 * c-basic-offset: 8
 * End:
 */