aboutsummaryrefslogtreecommitdiff
path: root/drivers/media/video/v4l2-common.c
blob: b8ee37ded3c98c1cedf4cd5b4ee79a3f1e58dec1 (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
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
/*
 *	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/module.h>
#include <linux/types.h>
#include <linux/kernel.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>
#define __OLD_VIDIOC_ /* To allow fixing old calls*/
#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)
 */


char *v4l2_norm_to_name(v4l2_std_id id)
{
	char *name;
	u32 myid = id;

	/* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle
	   64 bit comparations. So, on that architecture, with some gcc variants,
	   compilation fails. Currently, the max value is 30bit wide.
	 */
	BUG_ON(myid != id);

	switch (myid) {
	case V4L2_STD_PAL:
		name="PAL";		break;
	case V4L2_STD_PAL_BG:
		name="PAL-BG";		break;
	case V4L2_STD_PAL_DK:
		name="PAL-DK";		break;
	case V4L2_STD_PAL_B:
		name="PAL-B";		break;
	case V4L2_STD_PAL_B1:
		name="PAL-B1";		break;
	case V4L2_STD_PAL_G:
		name="PAL-G";		break;
	case V4L2_STD_PAL_H:
		name="PAL-H";		break;
	case V4L2_STD_PAL_I:
		name="PAL-I";		break;
	case V4L2_STD_PAL_D:
		name="PAL-D";		break;
	case V4L2_STD_PAL_D1:
		name="PAL-D1";		break;
	case V4L2_STD_PAL_K:
		name="PAL-K";		break;
	case V4L2_STD_PAL_M:
		name="PAL-M";		break;
	case V4L2_STD_PAL_N:
		name="PAL-N";		break;
	case V4L2_STD_PAL_Nc:
		name="PAL-Nc";		break;
	case V4L2_STD_PAL_60:
		name="PAL-60";		break;
	case V4L2_STD_NTSC:
		name="NTSC";		break;
	case V4L2_STD_NTSC_M:
		name="NTSC-M";		break;
	case V4L2_STD_NTSC_M_JP:
		name="NTSC-M-JP";	break;
	case V4L2_STD_NTSC_443:
		name="NTSC-443";	break;
	case V4L2_STD_NTSC_M_KR:
		name="NTSC-M-KR";	break;
	case V4L2_STD_SECAM:
		name="SECAM";		break;
	case V4L2_STD_SECAM_DK:
		name="SECAM-DK";	break;
	case V4L2_STD_SECAM_B:
		name="SECAM-B";		break;
	case V4L2_STD_SECAM_D:
		name="SECAM-D";		break;
	case V4L2_STD_SECAM_G:
		name="SECAM-G";		break;
	case V4L2_STD_SECAM_H:
		name="SECAM-H";		break;
	case V4L2_STD_SECAM_K:
		name="SECAM-K";		break;
	case V4L2_STD_SECAM_K1:
		name="SECAM-K1";	break;
	case V4L2_STD_SECAM_L:
		name="SECAM-L";		break;
	case V4L2_STD_SECAM_LC:
		name="SECAM-LC";	break;
	default:
		name="Unknown";		break;
	}

	return name;
}

/* 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",
	[V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap",
	[V4L2_BUF_TYPE_SLICED_VBI_OUTPUT]  = "slicec-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 CONFIG_VIDEO_V4L1_COMPAT
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",
	[_IOC_NR(VIDIOC_G_EXT_CTRLS)]      = "VIDIOC_G_EXT_CTRLS",
	[_IOC_NR(VIDIOC_S_EXT_CTRLS)]      = "VIDIOC_S_EXT_CTRLS",
	[_IOC_NR(VIDIOC_TRY_EXT_CTRLS)]    = "VIDIOC_TRY_EXT_CTRLS"
};
#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)

static const char *v4l2_int_ioctls[] = {
#ifdef CONFIG_VIDEO_V4L1_COMPAT
	[_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",
	[_IOC_NR(VIDIOC_INT_S_CRYSTAL_FREQ)]   = "VIDIOC_INT_S_CRYSTAL_FREQ"
};
#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 CONFIG_VIDEO_V4L1_COMPAT
	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;
	}
#ifdef CONFIG_VIDEO_V4L1_COMPAT
	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:
#endif
	case TUNER_SET_TYPE_ADDR:
	case TUNER_SET_STANDBY:
	case TDA9887_SET_CONFIG:
#ifdef __OLD_VIDIOC_
	case VIDIOC_OVERLAY_OLD:
#endif
	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:
#ifdef __OLD_VIDIOC_
	case VIDIOC_G_AUDIO_OLD:
#endif
	{
		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:
#ifdef __OLD_VIDIOC_
	case VIDIOC_G_AUDOUT_OLD:
#endif
	{
		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%08x\n",
				s,tc->hours,tc->minutes,tc->seconds,
				tc->type, tc->flags, tc->frames, *(__u32 *) 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:
#ifdef __OLD_VIDIOC_
	case VIDIOC_S_CTRL_OLD:
#endif
	{
		struct v4l2_control *p=arg;
		printk ("%s: id=%d, value=%d\n", s, p->id, p->value);
		break;
	}
	case VIDIOC_G_EXT_CTRLS:
	case VIDIOC_S_EXT_CTRLS:
	case VIDIOC_TRY_EXT_CTRLS:
	{
		struct v4l2_ext_controls *p = arg;
		int i;

		printk("%s: ctrl_class=%d, count=%d\n", s, p->ctrl_class, p->count);
		for (i = 0; i < p->count; i++) {
			struct v4l2_ext_control *c = &p->controls[i];
			if (cmd == VIDIOC_G_EXT_CTRLS)
				printk("%s: id=%d\n", s, c->id);
			else
				printk("%s: id=%d, value=%d\n", s, c->id, c->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:
#ifdef __OLD_VIDIOC_
	case VIDIOC_CROPCAP_OLD:
#endif
	{
		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_INT_S_CRYSTAL_FREQ:
	{
		struct v4l2_crystal_freq *p=arg;
		printk ("%s: freq=%u, flags=0x%x\n", s, p->freq, p->flags);
		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:
#ifdef __OLD_VIDIOC_
	case VIDIOC_S_PARM_OLD:
#endif
	{
		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;
	}
#ifdef CONFIG_VIDEO_V4L1_COMPAT
	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 VIDIOCGFREQ:
	case VIDIOCSFREQ:
	{
		unsigned long *p=arg;
		printk ("%s: value=%lu\n", s, *p);
		break;
	}
#endif
	case VIDIOC_INT_AUDIO_CLOCK_FREQ:
	case VIDIOC_INT_I2S_CLOCK_FREQ:
	case VIDIOC_INT_S_STANDBY:
	case VIDIOC_INT_RESET:
	{
		u32 *p=arg;

		printk ("%s: value=%d\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;
	}
	}
}

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

/* Helper functions for control handling			     */

/* Check for correctness of the ctrl's value based on the data from
   struct v4l2_queryctrl and the available menu items. Note that
   menu_items may be NULL, in that case it is ignored. */
int v4l2_ctrl_check(struct v4l2_ext_control *ctrl, struct v4l2_queryctrl *qctrl,
		const char **menu_items)
{
	if (qctrl->flags & V4L2_CTRL_FLAG_DISABLED)
		return -EINVAL;
	if (qctrl->flags & V4L2_CTRL_FLAG_GRABBED)
		return -EBUSY;
	if (qctrl->type == V4L2_CTRL_TYPE_BUTTON ||
	    qctrl->type == V4L2_CTRL_TYPE_INTEGER64 ||
	    qctrl->type == V4L2_CTRL_TYPE_CTRL_CLASS)
		return 0;
	if (ctrl->value < qctrl->minimum || ctrl->value > qctrl->maximum)
		return -ERANGE;
	if (qctrl->type == V4L2_CTRL_TYPE_MENU && menu_items != NULL) {
		if (menu_items[ctrl->value] == NULL ||
		    menu_items[ctrl->value][0] == '\0')
			return -EINVAL;
	}
	return 0;
}

/* Returns NULL or a character pointer array containing the menu for
   the given control ID. The pointer array ends with a NULL pointer.
   An empty string signifies a menu entry that is invalid. This allows
   drivers to disable certain options if it is not supported. */
const char **v4l2_ctrl_get_menu(u32 id)
{
	static const char *mpeg_audio_sampling_freq[] = {
		"44.1 kHz",
		"48 kHz",
		"32 kHz",
		NULL
	};
	static const char *mpeg_audio_encoding[] = {
		"Layer I",
		"Layer II",
		"Layer III",
		NULL
	};
	static const char *mpeg_audio_l1_bitrate[] = {
		"32 kbps",
		"64 kbps",
		"96 kbps",
		"128 kbps",
		"160 kbps",
		"192 kbps",
		"224 kbps",
		"256 kbps",
		"288 kbps",
		"320 kbps",
		"352 kbps",
		"384 kbps",
		"416 kbps",
		"448 kbps",
		NULL
	};
	static const char *mpeg_audio_l2_bitrate[] = {
		"32 kbps",
		"48 kbps",
		"56 kbps",
		"64 kbps",
		"80 kbps",
		"96 kbps",
		"112 kbps",
		"128 kbps",
		"160 kbps",
		"192 kbps",
		"224 kbps",
		"256 kbps",
		"320 kbps",
		"384 kbps",
		NULL
	};
	static const char *mpeg_audio_l3_bitrate[] = {
		"32 kbps",
		"40 kbps",
		"48 kbps",
		"56 kbps",
		"64 kbps",
		"80 kbps",
		"96 kbps",
		"112 kbps",
		"128 kbps",
		"160 kbps",
		"192 kbps",
		"224 kbps",
		"256 kbps",
		"320 kbps",
		NULL
	};
	static const char *mpeg_audio_mode[] = {
		"Stereo",
		"Joint Stereo",
		"Dual",
		"Mono",
		NULL
	};
	static const char *mpeg_audio_mode_extension[] = {
		"Bound 4",
		"Bound 8",
		"Bound 12",
		"Bound 16",
		NULL
	};
	static const char *mpeg_audio_emphasis[] = {
		"No Emphasis",
		"50/15 us",
		"CCITT J17",
		NULL
	};
	static const char *mpeg_audio_crc[] = {
		"No CRC",
		"16-bit CRC",
		NULL
	};
	static const char *mpeg_video_encoding[] = {
		"MPEG-1",
		"MPEG-2",
		NULL
	};
	static const char *mpeg_video_aspect[] = {
		"1x1",
		"4x3",
		"16x9",
		"2.21x1",
		NULL
	};
	static const char *mpeg_video_bitrate_mode[] = {
		"Variable Bitrate",
		"Constant Bitrate",
		NULL
	};
	static const char *mpeg_stream_type[] = {
		"MPEG-2 Program Stream",
		"MPEG-2 Transport Stream",
		"MPEG-1 System Stream",
		"MPEG-2 DVD-compatible Stream",
		"MPEG-1 VCD-compatible Stream",
		"MPEG-2 SVCD-compatible Stream",
		NULL
	};
	static const char *mpeg_stream_vbi_fmt[] = {
		"No VBI",
		"Private packet, IVTV format",
		NULL
	};

	switch (id) {
		case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
			return mpeg_audio_sampling_freq;
		case V4L2_CID_MPEG_AUDIO_ENCODING:
			return mpeg_audio_encoding;
		case V4L2_CID_MPEG_AUDIO_L1_BITRATE:
			return mpeg_audio_l1_bitrate;
		case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
			return mpeg_audio_l2_bitrate;
		case V4L2_CID_MPEG_AUDIO_L3_BITRATE:
			return mpeg_audio_l3_bitrate;
		case V4L2_CID_MPEG_AUDIO_MODE:
			return mpeg_audio_mode;
		case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION:
			return mpeg_audio_mode_extension;
		case V4L2_CID_MPEG_AUDIO_EMPHASIS:
			return mpeg_audio_emphasis;
		case V4L2_CID_MPEG_AUDIO_CRC:
			return mpeg_audio_crc;
		case V4L2_CID_MPEG_VIDEO_ENCODING:
			return mpeg_video_encoding;
		case V4L2_CID_MPEG_VIDEO_ASPECT:
			return mpeg_video_aspect;
		case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
			return mpeg_video_bitrate_mode;
		case V4L2_CID_MPEG_STREAM_TYPE:
			return mpeg_stream_type;
		case V4L2_CID_MPEG_STREAM_VBI_FMT:
			return mpeg_stream_vbi_fmt;
		default:
			return NULL;
	}
}

/* Fill in a struct v4l2_queryctrl */
int v4l2_ctrl_query_fill(struct v4l2_queryctrl *qctrl, s32 min, s32 max, s32 step, s32 def)
{
	const char *name;

	qctrl->flags = 0;
	switch (qctrl->id) {
	/* USER controls */
	case V4L2_CID_USER_CLASS: 	name = "User Controls"; break;
	case V4L2_CID_AUDIO_VOLUME: 	name = "Volume"; break;
	case V4L2_CID_AUDIO_MUTE: 	name = "Mute"; break;
	case V4L2_CID_AUDIO_BALANCE: 	name = "Balance"; break;
	case V4L2_CID_AUDIO_BASS: 	name = "Bass"; break;
	case V4L2_CID_AUDIO_TREBLE: 	name = "Treble"; break;
	case V4L2_CID_AUDIO_LOUDNESS: 	name = "Loudness"; break;
	case V4L2_CID_BRIGHTNESS: 	name = "Brightness"; break;
	case V4L2_CID_CONTRAST: 	name = "Contrast"; break;
	case V4L2_CID_SATURATION: 	name = "Saturation"; break;
	case V4L2_CID_HUE: 		name = "Hue"; break;

	/* MPEG controls */
	case V4L2_CID_MPEG_CLASS: 		name = "MPEG Encoder Controls"; break;
	case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: name = "Audio Sampling Frequency"; break;
	case V4L2_CID_MPEG_AUDIO_ENCODING: 	name = "Audio Encoding Layer"; break;
	case V4L2_CID_MPEG_AUDIO_L1_BITRATE: 	name = "Audio Layer I Bitrate"; break;
	case V4L2_CID_MPEG_AUDIO_L2_BITRATE: 	name = "Audio Layer II Bitrate"; break;
	case V4L2_CID_MPEG_AUDIO_L3_BITRATE: 	name = "Audio Layer III Bitrate"; break;
	case V4L2_CID_MPEG_AUDIO_MODE: 		name = "Audio Stereo Mode"; break;
	case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION: name = "Audio Stereo Mode Extension"; break;
	case V4L2_CID_MPEG_AUDIO_EMPHASIS: 	name = "Audio Emphasis"; break;
	case V4L2_CID_MPEG_AUDIO_CRC: 		name = "Audio CRC"; break;
	case V4L2_CID_MPEG_VIDEO_ENCODING: 	name = "Video Encoding"; break;
	case V4L2_CID_MPEG_VIDEO_ASPECT: 	name = "Video Aspect"; break;
	case V4L2_CID_MPEG_VIDEO_B_FRAMES: 	name = "Video B Frames"; break;
	case V4L2_CID_MPEG_VIDEO_GOP_SIZE: 	name = "Video GOP Size"; break;
	case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE: 	name = "Video GOP Closure"; break;
	case V4L2_CID_MPEG_VIDEO_PULLDOWN: 	name = "Video Pulldown"; break;
	case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: 	name = "Video Bitrate Mode"; break;
	case V4L2_CID_MPEG_VIDEO_BITRATE: 	name = "Video Bitrate"; break;
	case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK: 	name = "Video Peak Bitrate"; break;
	case V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION: name = "Video Temporal Decimation"; break;
	case V4L2_CID_MPEG_STREAM_TYPE: 	name = "Stream Type"; break;
	case V4L2_CID_MPEG_STREAM_PID_PMT: 	name = "Stream PMT Program ID"; break;
	case V4L2_CID_MPEG_STREAM_PID_AUDIO: 	name = "Stream Audio Program ID"; break;
	case V4L2_CID_MPEG_STREAM_PID_VIDEO: 	name = "Stream Video Program ID"; break;
	case V4L2_CID_MPEG_STREAM_PID_PCR: 	name = "Stream PCR Program ID"; break;
	case V4L2_CID_MPEG_STREAM_PES_ID_AUDIO: name = "Stream PES Audio ID"; break;
	case V4L2_CID_MPEG_STREAM_PES_ID_VIDEO: name = "Stream PES Video ID"; break;
	case V4L2_CID_MPEG_STREAM_VBI_FMT:	name = "Stream VBI Format"; break;

	default:
		return -EINVAL;
	}
	switch (qctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
	case V4L2_CID_AUDIO_LOUDNESS:
	case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE:
	case V4L2_CID_MPEG_VIDEO_PULLDOWN:
		qctrl->type = V4L2_CTRL_TYPE_BOOLEAN;
		min = 0;
		max = step = 1;
		break;
	case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
	case V4L2_CID_MPEG_AUDIO_ENCODING:
	case V4L2_CID_MPEG_AUDIO_L1_BITRATE:
	case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
	case V4L2_CID_MPEG_AUDIO_L3_BITRATE:
	case V4L2_CID_MPEG_AUDIO_MODE:
	case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION:
	case V4L2_CID_MPEG_AUDIO_EMPHASIS:
	case V4L2_CID_MPEG_AUDIO_CRC:
	case V4L2_CID_MPEG_VIDEO_ENCODING:
	case V4L2_CID_MPEG_VIDEO_ASPECT:
	case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
	case V4L2_CID_MPEG_STREAM_TYPE:
	case V4L2_CID_MPEG_STREAM_VBI_FMT:
		qctrl->type = V4L2_CTRL_TYPE_MENU;
		step = 1;
		break;
	case V4L2_CID_USER_CLASS:
	case V4L2_CID_MPEG_CLASS:
		qctrl->type = V4L2_CTRL_TYPE_CTRL_CLASS;
		qctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
		min = max = step = def = 0;
		break;
	default:
		qctrl->type = V4L2_CTRL_TYPE_INTEGER;
		break;
	}
	switch (qctrl->id) {
	case V4L2_CID_MPEG_AUDIO_ENCODING:
	case V4L2_CID_MPEG_AUDIO_MODE:
	case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
	case V4L2_CID_MPEG_VIDEO_B_FRAMES:
	case V4L2_CID_MPEG_STREAM_TYPE:
		qctrl->flags |= V4L2_CTRL_FLAG_UPDATE;
		break;
	case V4L2_CID_AUDIO_VOLUME:
	case V4L2_CID_AUDIO_BALANCE:
	case V4L2_CID_AUDIO_BASS:
	case V4L2_CID_AUDIO_TREBLE:
	case V4L2_CID_BRIGHTNESS:
	case V4L2_CID_CONTRAST:
	case V4L2_CID_SATURATION:
	case V4L2_CID_HUE:
		qctrl->flags |= V4L2_CTRL_FLAG_SLIDER;
		break;
	}
	qctrl->minimum = min;
	qctrl->maximum = max;
	qctrl->step = step;
	qctrl->default_value = def;
	qctrl->reserved[0] = qctrl->reserved[1] = 0;
	snprintf(qctrl->name, sizeof(qctrl->name), name);
	return 0;
}

/* Fill in a struct v4l2_queryctrl with standard values based on
   the control ID. */
int v4l2_ctrl_query_fill_std(struct v4l2_queryctrl *qctrl)
{
	switch (qctrl->id) {
	/* USER controls */
	case V4L2_CID_USER_CLASS:
	case V4L2_CID_MPEG_CLASS:
		return v4l2_ctrl_query_fill(qctrl, 0, 0, 0, 0);
	case V4L2_CID_AUDIO_VOLUME:
		return v4l2_ctrl_query_fill(qctrl, 0, 65535, 65535 / 100, 58880);
	case V4L2_CID_AUDIO_MUTE:
	case V4L2_CID_AUDIO_LOUDNESS:
		return v4l2_ctrl_query_fill(qctrl, 0, 1, 1, 0);
	case V4L2_CID_AUDIO_BALANCE:
	case V4L2_CID_AUDIO_BASS:
	case V4L2_CID_AUDIO_TREBLE:
		return v4l2_ctrl_query_fill(qctrl, 0, 65535, 65535 / 100, 32768);
	case V4L2_CID_BRIGHTNESS:
		return v4l2_ctrl_query_fill(qctrl, 0, 255, 1, 128);
	case V4L2_CID_CONTRAST:
	case V4L2_CID_SATURATION:
		return v4l2_ctrl_query_fill(qctrl, 0, 127, 1, 64);
	case V4L2_CID_HUE:
		return v4l2_ctrl_query_fill(qctrl, -128, 127, 1, 0);

	/* MPEG controls */
	case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
		return v4l2_ctrl_query_fill(qctrl,
				V4L2_MPEG_AUDIO_SAMPLING_FREQ_44100,
				V4L2_MPEG_AUDIO_SAMPLING_FREQ_32000, 1,
				V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000);
	case V4L2_CID_MPEG_AUDIO_ENCODING:
		return v4l2_ctrl_query_fill(qctrl,
				V4L2_MPEG_AUDIO_ENCODING_LAYER_1,
				V4L2_MPEG_AUDIO_ENCODING_LAYER_3, 1,
				V4L2_MPEG_AUDIO_ENCODING_LAYER_2);
	case V4L2_CID_MPEG_AUDIO_L1_BITRATE:
		return v4l2_ctrl_query_fill(qctrl,
				V4L2_MPEG_AUDIO_L1_BITRATE_32K,
				V4L2_MPEG_AUDIO_L1_BITRATE_448K, 1,
				V4L2_MPEG_AUDIO_L1_BITRATE_256K);
	case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
		return v4l2_ctrl_query_fill(qctrl,
				V4L2_MPEG_AUDIO_L2_BITRATE_32K,
				V4L2_MPEG_AUDIO_L2_BITRATE_384K, 1,
				V4L2_MPEG_AUDIO_L2_BITRATE_224K);
	case V4L2_CID_MPEG_AUDIO_L3_BITRATE:
		return v4l2_ctrl_query_fill(qctrl,
				V4L2_MPEG_AUDIO_L3_BITRATE_32K,
				V4L2_MPEG_AUDIO_L3_BITRATE_320K, 1,
				V4L2_MPEG_AUDIO_L3_BITRATE_192K);
	case V4L2_CID_MPEG_AUDIO_MODE:
		return v4l2_ctrl_query_fill(qctrl,
				V4L2_MPEG_AUDIO_MODE_STEREO,
				V4L2_MPEG_AUDIO_MODE_MONO, 1,
				V4L2_MPEG_AUDIO_MODE_STEREO);
	case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION:
		return v4l2_ctrl_query_fill(qctrl,
				V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_4,
				V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_16, 1,
				V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_4);
	case V4L2_CID_MPEG_AUDIO_EMPHASIS:
		return v4l2_ctrl_query_fill(qctrl,
				V4L2_MPEG_AUDIO_EMPHASIS_NONE,
				V4L2_MPEG_AUDIO_EMPHASIS_CCITT_J17, 1,
				V4L2_MPEG_AUDIO_EMPHASIS_NONE);
	case V4L2_CID_MPEG_AUDIO_CRC:
		return v4l2_ctrl_query_fill(qctrl,
				V4L2_MPEG_AUDIO_CRC_NONE,
				V4L2_MPEG_AUDIO_CRC_CRC16, 1,
				V4L2_MPEG_AUDIO_CRC_NONE);
	case V4L2_CID_MPEG_VIDEO_ENCODING:
		return v4l2_ctrl_query_fill(qctrl,
				V4L2_MPEG_VIDEO_ENCODING_MPEG_1,
				V4L2_MPEG_VIDEO_ENCODING_MPEG_2, 1,
				V4L2_MPEG_VIDEO_ENCODING_MPEG_2);
	case V4L2_CID_MPEG_VIDEO_ASPECT:
		return v4l2_ctrl_query_fill(qctrl,
				V4L2_MPEG_VIDEO_ASPECT_1x1,
				V4L2_MPEG_VIDEO_ASPECT_221x100, 1,
				V4L2_MPEG_VIDEO_ASPECT_4x3);
	case V4L2_CID_MPEG_VIDEO_B_FRAMES:
		return v4l2_ctrl_query_fill(qctrl, 0, 33, 1, 2);
	case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
		return v4l2_ctrl_query_fill(qctrl, 1, 34, 1, 12);
	case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE:
		return v4l2_ctrl_query_fill(qctrl, 0, 1, 1, 1);
	case V4L2_CID_MPEG_VIDEO_PULLDOWN:
		return v4l2_ctrl_query_fill(qctrl, 0, 1, 1, 0);
	case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
		return v4l2_ctrl_query_fill(qctrl,
				V4L2_MPEG_VIDEO_BITRATE_MODE_VBR,
				V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 1,
				V4L2_MPEG_VIDEO_BITRATE_MODE_VBR);
	case V4L2_CID_MPEG_VIDEO_BITRATE:
		return v4l2_ctrl_query_fill(qctrl, 0, 27000000, 1, 6000000);
	case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
		return v4l2_ctrl_query_fill(qctrl, 0, 27000000, 1, 8000000);
	case V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION:
		return v4l2_ctrl_query_fill(qctrl, 0, 255, 1, 0);
	case V4L2_CID_MPEG_STREAM_TYPE:
		return v4l2_ctrl_query_fill(qctrl,
				V4L2_MPEG_STREAM_TYPE_MPEG2_PS,
				V4L2_MPEG_STREAM_TYPE_MPEG2_SVCD, 1,
				V4L2_MPEG_STREAM_TYPE_MPEG2_PS);
	case V4L2_CID_MPEG_STREAM_PID_PMT:
		return v4l2_ctrl_query_fill(qctrl, 0, (1 << 14) - 1, 1, 16);
	case V4L2_CID_MPEG_STREAM_PID_AUDIO:
		return v4l2_ctrl_query_fill(qctrl, 0, (1 << 14) - 1, 1, 260);
	case V4L2_CID_MPEG_STREAM_PID_VIDEO:
		return v4l2_ctrl_query_fill(qctrl, 0, (1 << 14) - 1, 1, 256);
	case V4L2_CID_MPEG_STREAM_PID_PCR:
		return v4l2_ctrl_query_fill(qctrl, 0, (1 << 14) - 1, 1, 259);
	case V4L2_CID_MPEG_STREAM_PES_ID_AUDIO:
		return v4l2_ctrl_query_fill(qctrl, 0, 255, 1, 0);
	case V4L2_CID_MPEG_STREAM_PES_ID_VIDEO:
		return v4l2_ctrl_query_fill(qctrl, 0, 255, 1, 0);
	case V4L2_CID_MPEG_STREAM_VBI_FMT:
		return v4l2_ctrl_query_fill(qctrl,
				V4L2_MPEG_STREAM_VBI_FMT_NONE,
				V4L2_MPEG_STREAM_VBI_FMT_IVTV, 1,
				V4L2_MPEG_STREAM_VBI_FMT_NONE);
	default:
		return -EINVAL;
	}
}

/* Fill in a struct v4l2_querymenu based on the struct v4l2_queryctrl and
   the menu. The qctrl pointer may be NULL, in which case it is ignored. */
int v4l2_ctrl_query_menu(struct v4l2_querymenu *qmenu, struct v4l2_queryctrl *qctrl,
	       const char **menu_items)
{
	int i;

	if (menu_items == NULL ||
	    (qctrl && (qmenu->index < qctrl->minimum || qmenu->index > qctrl->maximum)))
		return -EINVAL;
	for (i = 0; i < qmenu->index && menu_items[i]; i++) ;
	if (menu_items[i] == NULL || menu_items[i][0] == '\0')
		return -EINVAL;
	snprintf(qmenu->name, sizeof(qmenu->name), menu_items[qmenu->index]);
	qmenu->reserved = 0;
	return 0;
}

/* ctrl_classes points to an array of u32 pointers, the last element is
   a NULL pointer. Each u32 array is a 0-terminated array of control IDs.
   Each array must be sorted low to high and belong to the same control
   class. The array of u32 pointer must also be sorted, from low class IDs
   to high class IDs.

   This function returns the first ID that follows after the given ID.
   When no more controls are available 0 is returned. */
u32 v4l2_ctrl_next(const u32 * const * ctrl_classes, u32 id)
{
	u32 ctrl_class;
	const u32 *pctrl;

	/* if no query is desired, then just return the control ID */
	if ((id & V4L2_CTRL_FLAG_NEXT_CTRL) == 0)
		return id;
	if (ctrl_classes == NULL)
		return 0;
	id &= V4L2_CTRL_ID_MASK;
	ctrl_class = V4L2_CTRL_ID2CLASS(id);
	id++;	/* select next control */
	/* find first class that matches (or is greater than) the class of
	   the ID */
	while (*ctrl_classes && V4L2_CTRL_ID2CLASS(**ctrl_classes) < ctrl_class)
		ctrl_classes++;
	/* no more classes */
	if (*ctrl_classes == NULL)
		return 0;
	pctrl = *ctrl_classes;
	/* find first ctrl within the class that is >= ID */
	while (*pctrl && *pctrl < id) pctrl++;
	if (*pctrl)
		return *pctrl;
	/* we are at the end of the controls of the current class. */
	/* continue with next class if available */
	ctrl_classes++;
	if (*ctrl_classes == NULL)
		return 0;
	return **ctrl_classes;
}

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

EXPORT_SYMBOL(v4l2_norm_to_name);
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);

EXPORT_SYMBOL(v4l2_ctrl_next);
EXPORT_SYMBOL(v4l2_ctrl_check);
EXPORT_SYMBOL(v4l2_ctrl_get_menu);
EXPORT_SYMBOL(v4l2_ctrl_query_menu);
EXPORT_SYMBOL(v4l2_ctrl_query_fill);
EXPORT_SYMBOL(v4l2_ctrl_query_fill_std);

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