summaryrefslogtreecommitdiff
path: root/drivers/media/usb/gspca/sonixb.c
blob: d7ff3b9687c57cb22c504e7a3a9493e41fd924eb (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
/*
 *		sonix sn9c102 (bayer) library
 *
 * Copyright (C) 2009-2011 Jean-François Moine <http://moinejf.free.fr>
 * Copyright (C) 2003 2004 Michel Xhaard mxhaard@magic.fr
 * Add Pas106 Stefano Mozzi (C) 2004
 *
 * 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
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

/* Some documentation on known sonixb registers:

Reg	Use
sn9c101 / sn9c102:
0x10	high nibble red gain low nibble blue gain
0x11	low nibble green gain
sn9c103:
0x05	red gain 0-127
0x06	blue gain 0-127
0x07	green gain 0-127
all:
0x08-0x0f i2c / 3wire registers
0x12	hstart
0x13	vstart
0x15	hsize (hsize = register-value * 16)
0x16	vsize (vsize = register-value * 16)
0x17	bit 0 toggle compression quality (according to sn9c102 driver)
0x18	bit 7 enables compression, bit 4-5 set image down scaling:
	00 scale 1, 01 scale 1/2, 10, scale 1/4
0x19	high-nibble is sensor clock divider, changes exposure on sensors which
	use a clock generated by the bridge. Some sensors have their own clock.
0x1c	auto_exposure area (for avg_lum) startx (startx = register-value * 32)
0x1d	auto_exposure area (for avg_lum) starty (starty = register-value * 32)
0x1e	auto_exposure area (for avg_lum) stopx (hsize = (0x1e - 0x1c) * 32)
0x1f	auto_exposure area (for avg_lum) stopy (vsize = (0x1f - 0x1d) * 32)
*/

#define MODULE_NAME "sonixb"

#include <linux/input.h>
#include "gspca.h"

MODULE_AUTHOR("Jean-François Moine <http://moinejf.free.fr>");
MODULE_DESCRIPTION("GSPCA/SN9C102 USB Camera Driver");
MODULE_LICENSE("GPL");

/* specific webcam descriptor */
struct sd {
	struct gspca_dev gspca_dev;	/* !! must be the first item */

	struct v4l2_ctrl *brightness;
	struct v4l2_ctrl *plfreq;

	atomic_t avg_lum;
	int prev_avg_lum;
	int exposure_knee;
	int header_read;
	u8 header[12]; /* Header without sof marker */

	unsigned char autogain_ignore_frames;
	unsigned char frames_to_drop;

	__u8 bridge;			/* Type of bridge */
#define BRIDGE_101 0
#define BRIDGE_102 0 /* We make no difference between 101 and 102 */
#define BRIDGE_103 1

	__u8 sensor;			/* Type of image sensor chip */
#define SENSOR_HV7131D 0
#define SENSOR_HV7131R 1
#define SENSOR_OV6650 2
#define SENSOR_OV7630 3
#define SENSOR_PAS106 4
#define SENSOR_PAS202 5
#define SENSOR_TAS5110C 6
#define SENSOR_TAS5110D 7
#define SENSOR_TAS5130CXX 8
	__u8 reg11;
};

typedef const __u8 sensor_init_t[8];

struct sensor_data {
	const __u8 *bridge_init;
	sensor_init_t *sensor_init;
	int sensor_init_size;
	int flags;
	__u8 sensor_addr;
};

/* sensor_data flags */
#define F_SIF		0x01	/* sif or vga */

/* priv field of struct v4l2_pix_format flags (do not use low nibble!) */
#define MODE_RAW 0x10		/* raw bayer mode */
#define MODE_REDUCED_SIF 0x20	/* vga mode (320x240 / 160x120) on sif cam */

#define COMP 0xc7		/* 0x87 //0x07 */
#define COMP1 0xc9		/* 0x89 //0x09 */

#define MCK_INIT 0x63
#define MCK_INIT1 0x20		/*fixme: Bayer - 0x50 for JPEG ??*/

#define SYS_CLK 0x04

#define SENS(bridge, sensor, _flags, _sensor_addr) \
{ \
	.bridge_init = bridge, \
	.sensor_init = sensor, \
	.sensor_init_size = sizeof(sensor), \
	.flags = _flags, .sensor_addr = _sensor_addr \
}

/* We calculate the autogain at the end of the transfer of a frame, at this
   moment a frame with the old settings is being captured and transmitted. So
   if we adjust the gain or exposure we must ignore atleast the next frame for
   the new settings to come into effect before doing any other adjustments. */
#define AUTOGAIN_IGNORE_FRAMES 1

static const struct v4l2_pix_format vga_mode[] = {
	{160, 120, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
		.bytesperline = 160,
		.sizeimage = 160 * 120,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 2 | MODE_RAW},
	{160, 120, V4L2_PIX_FMT_SN9C10X, V4L2_FIELD_NONE,
		.bytesperline = 160,
		.sizeimage = 160 * 120 * 5 / 4,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 2},
	{320, 240, V4L2_PIX_FMT_SN9C10X, V4L2_FIELD_NONE,
		.bytesperline = 320,
		.sizeimage = 320 * 240 * 5 / 4,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 1},
	{640, 480, V4L2_PIX_FMT_SN9C10X, V4L2_FIELD_NONE,
		.bytesperline = 640,
		.sizeimage = 640 * 480 * 5 / 4,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 0},
};
static const struct v4l2_pix_format sif_mode[] = {
	{160, 120, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
		.bytesperline = 160,
		.sizeimage = 160 * 120,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 1 | MODE_RAW | MODE_REDUCED_SIF},
	{160, 120, V4L2_PIX_FMT_SN9C10X, V4L2_FIELD_NONE,
		.bytesperline = 160,
		.sizeimage = 160 * 120 * 5 / 4,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 1 | MODE_REDUCED_SIF},
	{176, 144, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
		.bytesperline = 176,
		.sizeimage = 176 * 144,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 1 | MODE_RAW},
	{176, 144, V4L2_PIX_FMT_SN9C10X, V4L2_FIELD_NONE,
		.bytesperline = 176,
		.sizeimage = 176 * 144 * 5 / 4,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 1},
	{320, 240, V4L2_PIX_FMT_SN9C10X, V4L2_FIELD_NONE,
		.bytesperline = 320,
		.sizeimage = 320 * 240 * 5 / 4,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 0 | MODE_REDUCED_SIF},
	{352, 288, V4L2_PIX_FMT_SN9C10X, V4L2_FIELD_NONE,
		.bytesperline = 352,
		.sizeimage = 352 * 288 * 5 / 4,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 0},
};

static const __u8 initHv7131d[] = {
	0x04, 0x03, 0x00, 0x04, 0x00, 0x00, 0x00, 0x80, 0x11, 0x00, 0x00, 0x00,
	0x00, 0x00,
	0x00, 0x00, 0x00, 0x02, 0x02, 0x00,
	0x28, 0x1e, 0x60, 0x8e, 0x42,
};
static const __u8 hv7131d_sensor_init[][8] = {
	{0xa0, 0x11, 0x01, 0x04, 0x00, 0x00, 0x00, 0x17},
	{0xa0, 0x11, 0x02, 0x00, 0x00, 0x00, 0x00, 0x17},
	{0xa0, 0x11, 0x28, 0x00, 0x00, 0x00, 0x00, 0x17},
	{0xa0, 0x11, 0x30, 0x30, 0x00, 0x00, 0x00, 0x17}, /* reset level */
	{0xa0, 0x11, 0x34, 0x02, 0x00, 0x00, 0x00, 0x17}, /* pixel bias volt */
};

static const __u8 initHv7131r[] = {
	0x46, 0x77, 0x00, 0x04, 0x00, 0x00, 0x00, 0x80, 0x11, 0x00, 0x00, 0x00,
	0x00, 0x00,
	0x00, 0x00, 0x00, 0x02, 0x01, 0x00,
	0x28, 0x1e, 0x60, 0x8a, 0x20,
};
static const __u8 hv7131r_sensor_init[][8] = {
	{0xc0, 0x11, 0x31, 0x38, 0x2a, 0x2e, 0x00, 0x10},
	{0xa0, 0x11, 0x01, 0x08, 0x2a, 0x2e, 0x00, 0x10},
	{0xb0, 0x11, 0x20, 0x00, 0xd0, 0x2e, 0x00, 0x10},
	{0xc0, 0x11, 0x25, 0x03, 0x0e, 0x28, 0x00, 0x16},
	{0xa0, 0x11, 0x30, 0x10, 0x0e, 0x28, 0x00, 0x15},
};
static const __u8 initOv6650[] = {
	0x44, 0x44, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80,
	0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x01, 0x01, 0x0a, 0x16, 0x12, 0x68, 0x8b,
	0x10,
};
static const __u8 ov6650_sensor_init[][8] = {
	/* Bright, contrast, etc are set through SCBB interface.
	 * AVCAP on win2 do not send any data on this controls. */
	/* Anyway, some registers appears to alter bright and constrat */

	/* Reset sensor */
	{0xa0, 0x60, 0x12, 0x80, 0x00, 0x00, 0x00, 0x10},
	/* Set clock register 0x11 low nibble is clock divider */
	{0xd0, 0x60, 0x11, 0xc0, 0x1b, 0x18, 0xc1, 0x10},
	/* Next some unknown stuff */
	{0xb0, 0x60, 0x15, 0x00, 0x02, 0x18, 0xc1, 0x10},
/*	{0xa0, 0x60, 0x1b, 0x01, 0x02, 0x18, 0xc1, 0x10},
		 * THIS SET GREEN SCREEN
		 * (pixels could be innverted in decode kind of "brg",
		 * but blue wont be there. Avoid this data ... */
	{0xd0, 0x60, 0x26, 0x01, 0x14, 0xd8, 0xa4, 0x10}, /* format out? */
	{0xd0, 0x60, 0x26, 0x01, 0x14, 0xd8, 0xa4, 0x10},
	{0xa0, 0x60, 0x30, 0x3d, 0x0a, 0xd8, 0xa4, 0x10},
	/* Enable rgb brightness control */
	{0xa0, 0x60, 0x61, 0x08, 0x00, 0x00, 0x00, 0x10},
	/* HDG: Note windows uses the line below, which sets both register 0x60
	   and 0x61 I believe these registers of the ov6650 are identical as
	   those of the ov7630, because if this is true the windows settings
	   add a bit additional red gain and a lot additional blue gain, which
	   matches my findings that the windows settings make blue much too
	   blue and red a little too red.
	{0xb0, 0x60, 0x60, 0x66, 0x68, 0xd8, 0xa4, 0x10}, */
	/* Some more unknown stuff */
	{0xa0, 0x60, 0x68, 0x04, 0x68, 0xd8, 0xa4, 0x10},
	{0xd0, 0x60, 0x17, 0x24, 0xd6, 0x04, 0x94, 0x10}, /* Clipreg */
};

static const __u8 initOv7630[] = {
	0x04, 0x44, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80,	/* r01 .. r08 */
	0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,	/* r09 .. r10 */
	0x00, 0x01, 0x01, 0x0a,				/* r11 .. r14 */
	0x28, 0x1e,			/* H & V sizes     r15 .. r16 */
	0x68, 0x8f, MCK_INIT1,				/* r17 .. r19 */
};
static const __u8 ov7630_sensor_init[][8] = {
	{0xa0, 0x21, 0x12, 0x80, 0x00, 0x00, 0x00, 0x10},
	{0xb0, 0x21, 0x01, 0x77, 0x3a, 0x00, 0x00, 0x10},
/*	{0xd0, 0x21, 0x12, 0x7c, 0x01, 0x80, 0x34, 0x10},	   jfm */
	{0xd0, 0x21, 0x12, 0x5c, 0x00, 0x80, 0x34, 0x10},	/* jfm */
	{0xa0, 0x21, 0x1b, 0x04, 0x00, 0x80, 0x34, 0x10},
	{0xa0, 0x21, 0x20, 0x44, 0x00, 0x80, 0x34, 0x10},
	{0xa0, 0x21, 0x23, 0xee, 0x00, 0x80, 0x34, 0x10},
	{0xd0, 0x21, 0x26, 0xa0, 0x9a, 0xa0, 0x30, 0x10},
	{0xb0, 0x21, 0x2a, 0x80, 0x00, 0xa0, 0x30, 0x10},
	{0xb0, 0x21, 0x2f, 0x3d, 0x24, 0xa0, 0x30, 0x10},
	{0xa0, 0x21, 0x32, 0x86, 0x24, 0xa0, 0x30, 0x10},
	{0xb0, 0x21, 0x60, 0xa9, 0x4a, 0xa0, 0x30, 0x10},
/*	{0xb0, 0x21, 0x60, 0xa9, 0x42, 0xa0, 0x30, 0x10},	 * jfm */
	{0xa0, 0x21, 0x65, 0x00, 0x42, 0xa0, 0x30, 0x10},
	{0xa0, 0x21, 0x69, 0x38, 0x42, 0xa0, 0x30, 0x10},
	{0xc0, 0x21, 0x6f, 0x88, 0x0b, 0x00, 0x30, 0x10},
	{0xc0, 0x21, 0x74, 0x21, 0x8e, 0x00, 0x30, 0x10},
	{0xa0, 0x21, 0x7d, 0xf7, 0x8e, 0x00, 0x30, 0x10},
	{0xd0, 0x21, 0x17, 0x1c, 0xbd, 0x06, 0xf6, 0x10},
};

static const __u8 initPas106[] = {
	0x04, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x81, 0x40, 0x00, 0x00, 0x00,
	0x00, 0x00,
	0x00, 0x00, 0x00, 0x04, 0x01, 0x00,
	0x16, 0x12, 0x24, COMP1, MCK_INIT1,
};
/* compression 0x86 mckinit1 0x2b */

/* "Known" PAS106B registers:
  0x02 clock divider
  0x03 Variable framerate bits 4-11
  0x04 Var framerate bits 0-3, one must leave the 4 msb's at 0 !!
       The variable framerate control must never be set lower then 300,
       which sets the framerate at 90 / reg02, otherwise vsync is lost.
  0x05 Shutter Time Line Offset, this can be used as an exposure control:
       0 = use full frame time, 255 = no exposure at all
       Note this may never be larger then "var-framerate control" / 2 - 2.
       When var-framerate control is < 514, no exposure is reached at the max
       allowed value for the framerate control value, rather then at 255.
  0x06 Shutter Time Pixel Offset, like reg05 this influences exposure, but
       only a very little bit, leave at 0xcd
  0x07 offset sign bit (bit0 1 > negative offset)
  0x08 offset
  0x09 Blue Gain
  0x0a Green1 Gain
  0x0b Green2 Gain
  0x0c Red Gain
  0x0e Global gain
  0x13 Write 1 to commit settings to sensor
*/

static const __u8 pas106_sensor_init[][8] = {
	/* Pixel Clock Divider 6 */
	{ 0xa1, 0x40, 0x02, 0x04, 0x00, 0x00, 0x00, 0x14 },
	/* Frame Time MSB (also seen as 0x12) */
	{ 0xa1, 0x40, 0x03, 0x13, 0x00, 0x00, 0x00, 0x14 },
	/* Frame Time LSB (also seen as 0x05) */
	{ 0xa1, 0x40, 0x04, 0x06, 0x00, 0x00, 0x00, 0x14 },
	/* Shutter Time Line Offset (also seen as 0x6d) */
	{ 0xa1, 0x40, 0x05, 0x65, 0x00, 0x00, 0x00, 0x14 },
	/* Shutter Time Pixel Offset (also seen as 0xb1) */
	{ 0xa1, 0x40, 0x06, 0xcd, 0x00, 0x00, 0x00, 0x14 },
	/* Black Level Subtract Sign (also seen 0x00) */
	{ 0xa1, 0x40, 0x07, 0xc1, 0x00, 0x00, 0x00, 0x14 },
	/* Black Level Subtract Level (also seen 0x01) */
	{ 0xa1, 0x40, 0x08, 0x06, 0x00, 0x00, 0x00, 0x14 },
	{ 0xa1, 0x40, 0x08, 0x06, 0x00, 0x00, 0x00, 0x14 },
	/* Color Gain B Pixel 5 a */
	{ 0xa1, 0x40, 0x09, 0x05, 0x00, 0x00, 0x00, 0x14 },
	/* Color Gain G1 Pixel 1 5 */
	{ 0xa1, 0x40, 0x0a, 0x04, 0x00, 0x00, 0x00, 0x14 },
	/* Color Gain G2 Pixel 1 0 5 */
	{ 0xa1, 0x40, 0x0b, 0x04, 0x00, 0x00, 0x00, 0x14 },
	/* Color Gain R Pixel 3 1 */
	{ 0xa1, 0x40, 0x0c, 0x05, 0x00, 0x00, 0x00, 0x14 },
	/* Color GainH  Pixel */
	{ 0xa1, 0x40, 0x0d, 0x00, 0x00, 0x00, 0x00, 0x14 },
	/* Global Gain */
	{ 0xa1, 0x40, 0x0e, 0x0e, 0x00, 0x00, 0x00, 0x14 },
	/* Contrast */
	{ 0xa1, 0x40, 0x0f, 0x00, 0x00, 0x00, 0x00, 0x14 },
	/* H&V synchro polarity */
	{ 0xa1, 0x40, 0x10, 0x06, 0x00, 0x00, 0x00, 0x14 },
	/* ?default */
	{ 0xa1, 0x40, 0x11, 0x06, 0x00, 0x00, 0x00, 0x14 },
	/* DAC scale */
	{ 0xa1, 0x40, 0x12, 0x06, 0x00, 0x00, 0x00, 0x14 },
	/* ?default */
	{ 0xa1, 0x40, 0x14, 0x02, 0x00, 0x00, 0x00, 0x14 },
	/* Validate Settings */
	{ 0xa1, 0x40, 0x13, 0x01, 0x00, 0x00, 0x00, 0x14 },
};

static const __u8 initPas202[] = {
	0x44, 0x44, 0x21, 0x30, 0x00, 0x00, 0x00, 0x80, 0x40, 0x00, 0x00, 0x00,
	0x00, 0x00,
	0x00, 0x00, 0x00, 0x06, 0x03, 0x0a,
	0x28, 0x1e, 0x20, 0x89, 0x20,
};

/* "Known" PAS202BCB registers:
  0x02 clock divider
  0x04 Variable framerate bits 6-11 (*)
  0x05 Var framerate  bits 0-5, one must leave the 2 msb's at 0 !!
  0x07 Blue Gain
  0x08 Green Gain
  0x09 Red Gain
  0x0b offset sign bit (bit0 1 > negative offset)
  0x0c offset
  0x0e Unknown image is slightly brighter when bit 0 is 0, if reg0f is 0 too,
       leave at 1 otherwise we get a jump in our exposure control
  0x0f Exposure 0-255, 0 = use full frame time, 255 = no exposure at all
  0x10 Master gain 0 - 31
  0x11 write 1 to apply changes
  (*) The variable framerate control must never be set lower then 500
      which sets the framerate at 30 / reg02, otherwise vsync is lost.
*/
static const __u8 pas202_sensor_init[][8] = {
	/* Set the clock divider to 4 -> 30 / 4 = 7.5 fps, we would like
	   to set it lower, but for some reason the bridge starts missing
	   vsync's then */
	{0xa0, 0x40, 0x02, 0x04, 0x00, 0x00, 0x00, 0x10},
	{0xd0, 0x40, 0x04, 0x07, 0x34, 0x00, 0x09, 0x10},
	{0xd0, 0x40, 0x08, 0x01, 0x00, 0x00, 0x01, 0x10},
	{0xd0, 0x40, 0x0c, 0x00, 0x0c, 0x01, 0x32, 0x10},
	{0xd0, 0x40, 0x10, 0x00, 0x01, 0x00, 0x63, 0x10},
	{0xa0, 0x40, 0x15, 0x70, 0x01, 0x00, 0x63, 0x10},
	{0xa0, 0x40, 0x18, 0x00, 0x01, 0x00, 0x63, 0x10},
	{0xa0, 0x40, 0x11, 0x01, 0x01, 0x00, 0x63, 0x10},
	{0xa0, 0x40, 0x03, 0x56, 0x01, 0x00, 0x63, 0x10},
	{0xa0, 0x40, 0x11, 0x01, 0x01, 0x00, 0x63, 0x10},
};

static const __u8 initTas5110c[] = {
	0x44, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x11, 0x00, 0x00, 0x00,
	0x00, 0x00,
	0x00, 0x00, 0x00, 0x45, 0x09, 0x0a,
	0x16, 0x12, 0x60, 0x86, 0x2b,
};
/* Same as above, except a different hstart */
static const __u8 initTas5110d[] = {
	0x44, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x11, 0x00, 0x00, 0x00,
	0x00, 0x00,
	0x00, 0x00, 0x00, 0x41, 0x09, 0x0a,
	0x16, 0x12, 0x60, 0x86, 0x2b,
};
/* tas5110c is 3 wire, tas5110d is 2 wire (regular i2c) */
static const __u8 tas5110c_sensor_init[][8] = {
	{0x30, 0x11, 0x00, 0x00, 0x0c, 0x00, 0x00, 0x10},
	{0x30, 0x11, 0x02, 0x20, 0xa9, 0x00, 0x00, 0x10},
};
/* Known TAS5110D registers
 * reg02: gain, bit order reversed!! 0 == max gain, 255 == min gain
 * reg03: bit3: vflip, bit4: ~hflip, bit7: ~gainboost (~ == inverted)
 *        Note: writing reg03 seems to only work when written together with 02
 */
static const __u8 tas5110d_sensor_init[][8] = {
	{0xa0, 0x61, 0x9a, 0xca, 0x00, 0x00, 0x00, 0x17}, /* reset */
};

static const __u8 initTas5130[] = {
	0x04, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x11, 0x00, 0x00, 0x00,
	0x00, 0x00,
	0x00, 0x00, 0x00, 0x68, 0x0c, 0x0a,
	0x28, 0x1e, 0x60, COMP, MCK_INIT,
};
static const __u8 tas5130_sensor_init[][8] = {
/*	{0x30, 0x11, 0x00, 0x40, 0x47, 0x00, 0x00, 0x10},
					* shutter 0x47 short exposure? */
	{0x30, 0x11, 0x00, 0x40, 0x01, 0x00, 0x00, 0x10},
					/* shutter 0x01 long exposure */
	{0x30, 0x11, 0x02, 0x20, 0x70, 0x00, 0x00, 0x10},
};

static const struct sensor_data sensor_data[] = {
	SENS(initHv7131d, hv7131d_sensor_init, 0, 0),
	SENS(initHv7131r, hv7131r_sensor_init, 0, 0),
	SENS(initOv6650, ov6650_sensor_init, F_SIF, 0x60),
	SENS(initOv7630, ov7630_sensor_init, 0, 0x21),
	SENS(initPas106, pas106_sensor_init, F_SIF, 0),
	SENS(initPas202, pas202_sensor_init, 0, 0),
	SENS(initTas5110c, tas5110c_sensor_init, F_SIF, 0),
	SENS(initTas5110d, tas5110d_sensor_init, F_SIF, 0),
	SENS(initTas5130, tas5130_sensor_init, 0, 0),
};

/* get one byte in gspca_dev->usb_buf */
static void reg_r(struct gspca_dev *gspca_dev,
		  __u16 value)
{
	int res;

	if (gspca_dev->usb_err < 0)
		return;

	res = usb_control_msg(gspca_dev->dev,
			usb_rcvctrlpipe(gspca_dev->dev, 0),
			0,			/* request */
			USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
			value,
			0,			/* index */
			gspca_dev->usb_buf, 1,
			500);

	if (res < 0) {
		dev_err(gspca_dev->v4l2_dev.dev,
			"Error reading register %02x: %d\n", value, res);
		gspca_dev->usb_err = res;
	}
}

static void reg_w(struct gspca_dev *gspca_dev,
		  __u16 value,
		  const __u8 *buffer,
		  int len)
{
	int res;

	if (gspca_dev->usb_err < 0)
		return;

	memcpy(gspca_dev->usb_buf, buffer, len);
	res = usb_control_msg(gspca_dev->dev,
			usb_sndctrlpipe(gspca_dev->dev, 0),
			0x08,			/* request */
			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
			value,
			0,			/* index */
			gspca_dev->usb_buf, len,
			500);

	if (res < 0) {
		dev_err(gspca_dev->v4l2_dev.dev,
			"Error writing register %02x: %d\n", value, res);
		gspca_dev->usb_err = res;
	}
}

static void i2c_w(struct gspca_dev *gspca_dev, const u8 *buf)
{
	int retry = 60;

	if (gspca_dev->usb_err < 0)
		return;

	/* is i2c ready */
	reg_w(gspca_dev, 0x08, buf, 8);
	while (retry--) {
		if (gspca_dev->usb_err < 0)
			return;
		msleep(1);
		reg_r(gspca_dev, 0x08);
		if (gspca_dev->usb_buf[0] & 0x04) {
			if (gspca_dev->usb_buf[0] & 0x08) {
				dev_err(gspca_dev->v4l2_dev.dev,
					"i2c error writing %02x %02x %02x %02x"
					" %02x %02x %02x %02x\n",
					buf[0], buf[1], buf[2], buf[3],
					buf[4], buf[5], buf[6], buf[7]);
				gspca_dev->usb_err = -EIO;
			}
			return;
		}
	}

	dev_err(gspca_dev->v4l2_dev.dev, "i2c write timeout\n");
	gspca_dev->usb_err = -EIO;
}

static void i2c_w_vector(struct gspca_dev *gspca_dev,
			const __u8 buffer[][8], int len)
{
	for (;;) {
		if (gspca_dev->usb_err < 0)
			return;
		i2c_w(gspca_dev, *buffer);
		len -= 8;
		if (len <= 0)
			break;
		buffer++;
	}
}

static void setbrightness(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;

	switch (sd->sensor) {
	case  SENSOR_OV6650:
	case  SENSOR_OV7630: {
		__u8 i2cOV[] =
			{0xa0, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, 0x10};

		/* change reg 0x06 */
		i2cOV[1] = sensor_data[sd->sensor].sensor_addr;
		i2cOV[3] = sd->brightness->val;
		i2c_w(gspca_dev, i2cOV);
		break;
	}
	case SENSOR_PAS106:
	case SENSOR_PAS202: {
		__u8 i2cpbright[] =
			{0xb0, 0x40, 0x0b, 0x00, 0x00, 0x00, 0x00, 0x16};
		__u8 i2cpdoit[] =
			{0xa0, 0x40, 0x11, 0x01, 0x00, 0x00, 0x00, 0x16};

		/* PAS106 uses reg 7 and 8 instead of b and c */
		if (sd->sensor == SENSOR_PAS106) {
			i2cpbright[2] = 7;
			i2cpdoit[2] = 0x13;
		}

		if (sd->brightness->val < 127) {
			/* change reg 0x0b, signreg */
			i2cpbright[3] = 0x01;
			/* set reg 0x0c, offset */
			i2cpbright[4] = 127 - sd->brightness->val;
		} else
			i2cpbright[4] = sd->brightness->val - 127;

		i2c_w(gspca_dev, i2cpbright);
		i2c_w(gspca_dev, i2cpdoit);
		break;
	}
	default:
		break;
	}
}

static void setgain(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;
	u8 gain = gspca_dev->gain->val;

	switch (sd->sensor) {
	case SENSOR_HV7131D: {
		__u8 i2c[] =
			{0xc0, 0x11, 0x31, 0x00, 0x00, 0x00, 0x00, 0x17};

		i2c[3] = 0x3f - gain;
		i2c[4] = 0x3f - gain;
		i2c[5] = 0x3f - gain;

		i2c_w(gspca_dev, i2c);
		break;
	}
	case SENSOR_TAS5110C:
	case SENSOR_TAS5130CXX: {
		__u8 i2c[] =
			{0x30, 0x11, 0x02, 0x20, 0x70, 0x00, 0x00, 0x10};

		i2c[4] = 255 - gain;
		i2c_w(gspca_dev, i2c);
		break;
	}
	case SENSOR_TAS5110D: {
		__u8 i2c[] = {
			0xb0, 0x61, 0x02, 0x00, 0x10, 0x00, 0x00, 0x17 };
		gain = 255 - gain;
		/* The bits in the register are the wrong way around!! */
		i2c[3] |= (gain & 0x80) >> 7;
		i2c[3] |= (gain & 0x40) >> 5;
		i2c[3] |= (gain & 0x20) >> 3;
		i2c[3] |= (gain & 0x10) >> 1;
		i2c[3] |= (gain & 0x08) << 1;
		i2c[3] |= (gain & 0x04) << 3;
		i2c[3] |= (gain & 0x02) << 5;
		i2c[3] |= (gain & 0x01) << 7;
		i2c_w(gspca_dev, i2c);
		break;
	}
	case SENSOR_OV6650:
	case SENSOR_OV7630: {
		__u8 i2c[] = {0xa0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10};

		/*
		 * The ov7630's gain is weird, at 32 the gain drops to the
		 * same level as at 16, so skip 32-47 (of the 0-63 scale).
		 */
		if (sd->sensor == SENSOR_OV7630 && gain >= 32)
			gain += 16;

		i2c[1] = sensor_data[sd->sensor].sensor_addr;
		i2c[3] = gain;
		i2c_w(gspca_dev, i2c);
		break;
	}
	case SENSOR_PAS106:
	case SENSOR_PAS202: {
		__u8 i2cpgain[] =
			{0xa0, 0x40, 0x10, 0x00, 0x00, 0x00, 0x00, 0x15};
		__u8 i2cpcolorgain[] =
			{0xc0, 0x40, 0x07, 0x00, 0x00, 0x00, 0x00, 0x15};
		__u8 i2cpdoit[] =
			{0xa0, 0x40, 0x11, 0x01, 0x00, 0x00, 0x00, 0x16};

		/* PAS106 uses different regs (and has split green gains) */
		if (sd->sensor == SENSOR_PAS106) {
			i2cpgain[2] = 0x0e;
			i2cpcolorgain[0] = 0xd0;
			i2cpcolorgain[2] = 0x09;
			i2cpdoit[2] = 0x13;
		}

		i2cpgain[3] = gain;
		i2cpcolorgain[3] = gain >> 1;
		i2cpcolorgain[4] = gain >> 1;
		i2cpcolorgain[5] = gain >> 1;
		i2cpcolorgain[6] = gain >> 1;

		i2c_w(gspca_dev, i2cpgain);
		i2c_w(gspca_dev, i2cpcolorgain);
		i2c_w(gspca_dev, i2cpdoit);
		break;
	}
	default:
		if (sd->bridge == BRIDGE_103) {
			u8 buf[3] = { gain, gain, gain }; /* R, G, B */
			reg_w(gspca_dev, 0x05, buf, 3);
		} else {
			u8 buf[2];
			buf[0] = gain << 4 | gain; /* Red and blue */
			buf[1] = gain; /* Green */
			reg_w(gspca_dev, 0x10, buf, 2);
		}
	}
}

static void setexposure(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;

	switch (sd->sensor) {
	case SENSOR_HV7131D: {
		/* Note the datasheet wrongly says line mode exposure uses reg
		   0x26 and 0x27, testing has shown 0x25 + 0x26 */
		__u8 i2c[] = {0xc0, 0x11, 0x25, 0x00, 0x00, 0x00, 0x00, 0x17};
		u16 reg = gspca_dev->exposure->val;

		i2c[3] = reg >> 8;
		i2c[4] = reg & 0xff;
		i2c_w(gspca_dev, i2c);
		break;
	}
	case SENSOR_TAS5110C:
	case SENSOR_TAS5110D: {
		/* register 19's high nibble contains the sn9c10x clock divider
		   The high nibble configures the no fps according to the
		   formula: 60 / high_nibble. With a maximum of 30 fps */
		u8 reg = gspca_dev->exposure->val;

		reg = (reg << 4) | 0x0b;
		reg_w(gspca_dev, 0x19, &reg, 1);
		break;
	}
	case SENSOR_OV6650:
	case SENSOR_OV7630: {
		/* The ov6650 / ov7630 have 2 registers which both influence
		   exposure, register 11, whose low nibble sets the nr off fps
		   according to: fps = 30 / (low_nibble + 1)

		   The fps configures the maximum exposure setting, but it is
		   possible to use less exposure then what the fps maximum
		   allows by setting register 10. register 10 configures the
		   actual exposure as quotient of the full exposure, with 0
		   being no exposure at all (not very useful) and reg10_max
		   being max exposure possible at that framerate.

		   The code maps our 0 - 510 ms exposure ctrl to these 2
		   registers, trying to keep fps as high as possible.
		*/
		__u8 i2c[] = {0xb0, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x10};
		int reg10, reg11, reg10_max;

		/* ov6645 datasheet says reg10_max is 9a, but that uses
		   tline * 2 * reg10 as formula for calculating texpo, the
		   ov6650 probably uses the same formula as the 7730 which uses
		   tline * 4 * reg10, which explains why the reg10max we've
		   found experimentally for the ov6650 is exactly half that of
		   the ov6645. The ov7630 datasheet says the max is 0x41. */
		if (sd->sensor == SENSOR_OV6650) {
			reg10_max = 0x4d;
			i2c[4] = 0xc0; /* OV6650 needs non default vsync pol */
		} else
			reg10_max = 0x41;

		reg11 = (15 * gspca_dev->exposure->val + 999) / 1000;
		if (reg11 < 1)
			reg11 = 1;
		else if (reg11 > 16)
			reg11 = 16;

		/* In 640x480, if the reg11 has less than 4, the image is
		   unstable (the bridge goes into a higher compression mode
		   which we have not reverse engineered yet). */
		if (gspca_dev->width == 640 && reg11 < 4)
			reg11 = 4;

		/* frame exposure time in ms = 1000 * reg11 / 30    ->
		reg10 = (gspca_dev->exposure->val / 2) * reg10_max
				/ (1000 * reg11 / 30) */
		reg10 = (gspca_dev->exposure->val * 15 * reg10_max)
				/ (1000 * reg11);

		/* Don't allow this to get below 10 when using autogain, the
		   steps become very large (relatively) when below 10 causing
		   the image to oscilate from much too dark, to much too bright
		   and back again. */
		if (gspca_dev->autogain->val && reg10 < 10)
			reg10 = 10;
		else if (reg10 > reg10_max)
			reg10 = reg10_max;

		/* Write reg 10 and reg11 low nibble */
		i2c[1] = sensor_data[sd->sensor].sensor_addr;
		i2c[3] = reg10;
		i2c[4] |= reg11 - 1;

		/* If register 11 didn't change, don't change it */
		if (sd->reg11 == reg11)
			i2c[0] = 0xa0;

		i2c_w(gspca_dev, i2c);
		if (gspca_dev->usb_err == 0)
			sd->reg11 = reg11;
		break;
	}
	case SENSOR_PAS202: {
		__u8 i2cpframerate[] =
			{0xb0, 0x40, 0x04, 0x00, 0x00, 0x00, 0x00, 0x16};
		__u8 i2cpexpo[] =
			{0xa0, 0x40, 0x0f, 0x00, 0x00, 0x00, 0x00, 0x16};
		const __u8 i2cpdoit[] =
			{0xa0, 0x40, 0x11, 0x01, 0x00, 0x00, 0x00, 0x16};
		int framerate_ctrl;

		/* The exposure knee for the autogain algorithm is 200
		   (100 ms / 10 fps on other sensors), for values below this
		   use the control for setting the partial frame expose time,
		   above that use variable framerate. This way we run at max
		   framerate (640x480@7.5 fps, 320x240@10fps) until the knee
		   is reached. Using the variable framerate control above 200
		   is better then playing around with both clockdiv + partial
		   frame exposure times (like we are doing with the ov chips),
		   as that sometimes leads to jumps in the exposure control,
		   which are bad for auto exposure. */
		if (gspca_dev->exposure->val < 200) {
			i2cpexpo[3] = 255 - (gspca_dev->exposure->val * 255)
						/ 200;
			framerate_ctrl = 500;
		} else {
			/* The PAS202's exposure control goes from 0 - 4095,
			   but anything below 500 causes vsync issues, so scale
			   our 200-1023 to 500-4095 */
			framerate_ctrl = (gspca_dev->exposure->val - 200)
							* 1000 / 229 +  500;
		}

		i2cpframerate[3] = framerate_ctrl >> 6;
		i2cpframerate[4] = framerate_ctrl & 0x3f;
		i2c_w(gspca_dev, i2cpframerate);
		i2c_w(gspca_dev, i2cpexpo);
		i2c_w(gspca_dev, i2cpdoit);
		break;
	}
	case SENSOR_PAS106: {
		__u8 i2cpframerate[] =
			{0xb1, 0x40, 0x03, 0x00, 0x00, 0x00, 0x00, 0x14};
		__u8 i2cpexpo[] =
			{0xa1, 0x40, 0x05, 0x00, 0x00, 0x00, 0x00, 0x14};
		const __u8 i2cpdoit[] =
			{0xa1, 0x40, 0x13, 0x01, 0x00, 0x00, 0x00, 0x14};
		int framerate_ctrl;

		/* For values below 150 use partial frame exposure, above
		   that use framerate ctrl */
		if (gspca_dev->exposure->val < 150) {
			i2cpexpo[3] = 150 - gspca_dev->exposure->val;
			framerate_ctrl = 300;
		} else {
			/* The PAS106's exposure control goes from 0 - 4095,
			   but anything below 300 causes vsync issues, so scale
			   our 150-1023 to 300-4095 */
			framerate_ctrl = (gspca_dev->exposure->val - 150)
						* 1000 / 230 + 300;
		}

		i2cpframerate[3] = framerate_ctrl >> 4;
		i2cpframerate[4] = framerate_ctrl & 0x0f;
		i2c_w(gspca_dev, i2cpframerate);
		i2c_w(gspca_dev, i2cpexpo);
		i2c_w(gspca_dev, i2cpdoit);
		break;
	}
	default:
		break;
	}
}

static void setfreq(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;

	if (sd->sensor == SENSOR_OV6650 || sd->sensor == SENSOR_OV7630) {
		/* Framerate adjust register for artificial light 50 hz flicker
		   compensation, for the ov6650 this is identical to ov6630
		   0x2b register, see ov6630 datasheet.
		   0x4f / 0x8a -> (30 fps -> 25 fps), 0x00 -> no adjustment */
		__u8 i2c[] = {0xa0, 0x00, 0x2b, 0x00, 0x00, 0x00, 0x00, 0x10};
		switch (sd->plfreq->val) {
		default:
/*		case 0:			 * no filter*/
/*		case 2:			 * 60 hz */
			i2c[3] = 0;
			break;
		case 1:			/* 50 hz */
			i2c[3] = (sd->sensor == SENSOR_OV6650)
					? 0x4f : 0x8a;
			break;
		}
		i2c[1] = sensor_data[sd->sensor].sensor_addr;
		i2c_w(gspca_dev, i2c);
	}
}

static void do_autogain(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;
	int deadzone, desired_avg_lum, avg_lum;

	avg_lum = atomic_read(&sd->avg_lum);
	if (avg_lum == -1)
		return;

	if (sd->autogain_ignore_frames > 0) {
		sd->autogain_ignore_frames--;
		return;
	}

	/* SIF / VGA sensors have a different autoexposure area and thus
	   different avg_lum values for the same picture brightness */
	if (sensor_data[sd->sensor].flags & F_SIF) {
		deadzone = 500;
		/* SIF sensors tend to overexpose, so keep this small */
		desired_avg_lum = 5000;
	} else {
		deadzone = 1500;
		desired_avg_lum = 13000;
	}

	if (sd->brightness)
		desired_avg_lum = sd->brightness->val * desired_avg_lum / 127;

	if (gspca_dev->exposure->maximum < 500) {
		if (gspca_coarse_grained_expo_autogain(gspca_dev, avg_lum,
				desired_avg_lum, deadzone))
			sd->autogain_ignore_frames = AUTOGAIN_IGNORE_FRAMES;
	} else {
		int gain_knee = gspca_dev->gain->maximum * 9 / 10;
		if (gspca_expo_autogain(gspca_dev, avg_lum, desired_avg_lum,
				deadzone, gain_knee, sd->exposure_knee))
			sd->autogain_ignore_frames = AUTOGAIN_IGNORE_FRAMES;
	}
}

/* this function is called at probe time */
static int sd_config(struct gspca_dev *gspca_dev,
			const struct usb_device_id *id)
{
	struct sd *sd = (struct sd *) gspca_dev;
	struct cam *cam;

	reg_r(gspca_dev, 0x00);
	if (gspca_dev->usb_buf[0] != 0x10)
		return -ENODEV;

	/* copy the webcam info from the device id */
	sd->sensor = id->driver_info >> 8;
	sd->bridge = id->driver_info & 0xff;

	cam = &gspca_dev->cam;
	if (!(sensor_data[sd->sensor].flags & F_SIF)) {
		cam->cam_mode = vga_mode;
		cam->nmodes = ARRAY_SIZE(vga_mode);
	} else {
		cam->cam_mode = sif_mode;
		cam->nmodes = ARRAY_SIZE(sif_mode);
	}
	cam->npkt = 36;			/* 36 packets per ISOC message */

	return 0;
}

/* this function is called at probe and resume time */
static int sd_init(struct gspca_dev *gspca_dev)
{
	const __u8 stop = 0x09; /* Disable stream turn of LED */

	reg_w(gspca_dev, 0x01, &stop, 1);

	return gspca_dev->usb_err;
}

static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
{
	struct gspca_dev *gspca_dev =
		container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
	struct sd *sd = (struct sd *)gspca_dev;

	gspca_dev->usb_err = 0;

	if (ctrl->id == V4L2_CID_AUTOGAIN && ctrl->is_new && ctrl->val) {
		/* when switching to autogain set defaults to make sure
		   we are on a valid point of the autogain gain /
		   exposure knee graph, and give this change time to
		   take effect before doing autogain. */
		gspca_dev->gain->val = gspca_dev->gain->default_value;
		gspca_dev->exposure->val = gspca_dev->exposure->default_value;
		sd->autogain_ignore_frames = AUTOGAIN_IGNORE_FRAMES;
	}

	if (!gspca_dev->streaming)
		return 0;

	switch (ctrl->id) {
	case V4L2_CID_BRIGHTNESS:
		setbrightness(gspca_dev);
		break;
	case V4L2_CID_AUTOGAIN:
		if (gspca_dev->exposure->is_new || (ctrl->is_new && ctrl->val))
			setexposure(gspca_dev);
		if (gspca_dev->gain->is_new || (ctrl->is_new && ctrl->val))
			setgain(gspca_dev);
		break;
	case V4L2_CID_POWER_LINE_FREQUENCY:
		setfreq(gspca_dev);
		break;
	default:
		return -EINVAL;
	}
	return gspca_dev->usb_err;
}

static const struct v4l2_ctrl_ops sd_ctrl_ops = {
	.s_ctrl = sd_s_ctrl,
};

/* this function is called at probe time */
static int sd_init_controls(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;
	struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;

	gspca_dev->vdev.ctrl_handler = hdl;
	v4l2_ctrl_handler_init(hdl, 5);

	if (sd->sensor == SENSOR_OV6650 || sd->sensor == SENSOR_OV7630 ||
	    sd->sensor == SENSOR_PAS106 || sd->sensor == SENSOR_PAS202)
		sd->brightness = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
					V4L2_CID_BRIGHTNESS, 0, 255, 1, 127);

	/* Gain range is sensor dependent */
	switch (sd->sensor) {
	case SENSOR_OV6650:
	case SENSOR_PAS106:
	case SENSOR_PAS202:
		gspca_dev->gain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
					V4L2_CID_GAIN, 0, 31, 1, 15);
		break;
	case SENSOR_OV7630:
		gspca_dev->gain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
					V4L2_CID_GAIN, 0, 47, 1, 31);
		break;
	case SENSOR_HV7131D:
		gspca_dev->gain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
					V4L2_CID_GAIN, 0, 63, 1, 31);
		break;
	case SENSOR_TAS5110C:
	case SENSOR_TAS5110D:
	case SENSOR_TAS5130CXX:
		gspca_dev->gain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
					V4L2_CID_GAIN, 0, 255, 1, 127);
		break;
	default:
		if (sd->bridge == BRIDGE_103) {
			gspca_dev->gain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
						V4L2_CID_GAIN, 0, 127, 1, 63);
		} else {
			gspca_dev->gain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
						V4L2_CID_GAIN, 0, 15, 1, 7);
		}
	}

	/* Exposure range is sensor dependent, and not all have exposure */
	switch (sd->sensor) {
	case SENSOR_HV7131D:
		gspca_dev->exposure = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
					V4L2_CID_EXPOSURE, 0, 8191, 1, 482);
		sd->exposure_knee = 964;
		break;
	case SENSOR_OV6650:
	case SENSOR_OV7630:
	case SENSOR_PAS106:
	case SENSOR_PAS202:
		gspca_dev->exposure = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
					V4L2_CID_EXPOSURE, 0, 1023, 1, 66);
		sd->exposure_knee = 200;
		break;
	case SENSOR_TAS5110C:
	case SENSOR_TAS5110D:
		gspca_dev->exposure = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
					V4L2_CID_EXPOSURE, 2, 15, 1, 2);
		break;
	}

	if (gspca_dev->exposure) {
		gspca_dev->autogain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
						V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
	}

	if (sd->sensor == SENSOR_OV6650 || sd->sensor == SENSOR_OV7630)
		sd->plfreq = v4l2_ctrl_new_std_menu(hdl, &sd_ctrl_ops,
			V4L2_CID_POWER_LINE_FREQUENCY,
			V4L2_CID_POWER_LINE_FREQUENCY_60HZ, 0,
			V4L2_CID_POWER_LINE_FREQUENCY_DISABLED);

	if (hdl->error) {
		pr_err("Could not initialize controls\n");
		return hdl->error;
	}

	if (gspca_dev->autogain)
		v4l2_ctrl_auto_cluster(3, &gspca_dev->autogain, 0, false);

	return 0;
}

/* -- start the camera -- */
static int sd_start(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;
	struct cam *cam = &gspca_dev->cam;
	int i, mode;
	__u8 regs[0x31];

	mode = cam->cam_mode[gspca_dev->curr_mode].priv & 0x07;
	/* Copy registers 0x01 - 0x19 from the template */
	memcpy(&regs[0x01], sensor_data[sd->sensor].bridge_init, 0x19);
	/* Set the mode */
	regs[0x18] |= mode << 4;

	/* Set bridge gain to 1.0 */
	if (sd->bridge == BRIDGE_103) {
		regs[0x05] = 0x20; /* Red */
		regs[0x06] = 0x20; /* Green */
		regs[0x07] = 0x20; /* Blue */
	} else {
		regs[0x10] = 0x00; /* Red and blue */
		regs[0x11] = 0x00; /* Green */
	}

	/* Setup pixel numbers and auto exposure window */
	if (sensor_data[sd->sensor].flags & F_SIF) {
		regs[0x1a] = 0x14; /* HO_SIZE 640, makes no sense */
		regs[0x1b] = 0x0a; /* VO_SIZE 320, makes no sense */
		regs[0x1c] = 0x02; /* AE H-start 64 */
		regs[0x1d] = 0x02; /* AE V-start 64 */
		regs[0x1e] = 0x09; /* AE H-end 288 */
		regs[0x1f] = 0x07; /* AE V-end 224 */
	} else {
		regs[0x1a] = 0x1d; /* HO_SIZE 960, makes no sense */
		regs[0x1b] = 0x10; /* VO_SIZE 512, makes no sense */
		regs[0x1c] = 0x05; /* AE H-start 160 */
		regs[0x1d] = 0x03; /* AE V-start 96 */
		regs[0x1e] = 0x0f; /* AE H-end 480 */
		regs[0x1f] = 0x0c; /* AE V-end 384 */
	}

	/* Setup the gamma table (only used with the sn9c103 bridge) */
	for (i = 0; i < 16; i++)
		regs[0x20 + i] = i * 16;
	regs[0x20 + i] = 255;

	/* Special cases where some regs depend on mode or bridge */
	switch (sd->sensor) {
	case SENSOR_TAS5130CXX:
		/* FIXME / TESTME
		   probably not mode specific at all most likely the upper
		   nibble of 0x19 is exposure (clock divider) just as with
		   the tas5110, we need someone to test this. */
		regs[0x19] = mode ? 0x23 : 0x43;
		break;
	case SENSOR_OV7630:
		/* FIXME / TESTME for some reason with the 101/102 bridge the
		   clock is set to 12 Mhz (reg1 == 0x04), rather then 24.
		   Also the hstart needs to go from 1 to 2 when using a 103,
		   which is likely related. This does not seem right. */
		if (sd->bridge == BRIDGE_103) {
			regs[0x01] = 0x44; /* Select 24 Mhz clock */
			regs[0x12] = 0x02; /* Set hstart to 2 */
		}
		break;
	case SENSOR_PAS202:
		/* For some unknown reason we need to increase hstart by 1 on
		   the sn9c103, otherwise we get wrong colors (bayer shift). */
		if (sd->bridge == BRIDGE_103)
			regs[0x12] += 1;
		break;
	}
	/* Disable compression when the raw bayer format has been selected */
	if (cam->cam_mode[gspca_dev->curr_mode].priv & MODE_RAW)
		regs[0x18] &= ~0x80;

	/* Vga mode emulation on SIF sensor? */
	if (cam->cam_mode[gspca_dev->curr_mode].priv & MODE_REDUCED_SIF) {
		regs[0x12] += 16;	/* hstart adjust */
		regs[0x13] += 24;	/* vstart adjust */
		regs[0x15]  = 320 / 16; /* hsize */
		regs[0x16]  = 240 / 16; /* vsize */
	}

	/* reg 0x01 bit 2 video transfert on */
	reg_w(gspca_dev, 0x01, &regs[0x01], 1);
	/* reg 0x17 SensorClk enable inv Clk 0x60 */
	reg_w(gspca_dev, 0x17, &regs[0x17], 1);
	/* Set the registers from the template */
	reg_w(gspca_dev, 0x01, &regs[0x01],
	      (sd->bridge == BRIDGE_103) ? 0x30 : 0x1f);

	/* Init the sensor */
	i2c_w_vector(gspca_dev, sensor_data[sd->sensor].sensor_init,
			sensor_data[sd->sensor].sensor_init_size);

	/* Mode / bridge specific sensor setup */
	switch (sd->sensor) {
	case SENSOR_PAS202: {
		const __u8 i2cpclockdiv[] =
			{0xa0, 0x40, 0x02, 0x03, 0x00, 0x00, 0x00, 0x10};
		/* clockdiv from 4 to 3 (7.5 -> 10 fps) when in low res mode */
		if (mode)
			i2c_w(gspca_dev, i2cpclockdiv);
		break;
	    }
	case SENSOR_OV7630:
		/* FIXME / TESTME We should be able to handle this identical
		   for the 101/102 and the 103 case */
		if (sd->bridge == BRIDGE_103) {
			const __u8 i2c[] = { 0xa0, 0x21, 0x13,
					     0x80, 0x00, 0x00, 0x00, 0x10 };
			i2c_w(gspca_dev, i2c);
		}
		break;
	}
	/* H_size V_size 0x28, 0x1e -> 640x480. 0x16, 0x12 -> 352x288 */
	reg_w(gspca_dev, 0x15, &regs[0x15], 2);
	/* compression register */
	reg_w(gspca_dev, 0x18, &regs[0x18], 1);
	/* H_start */
	reg_w(gspca_dev, 0x12, &regs[0x12], 1);
	/* V_START */
	reg_w(gspca_dev, 0x13, &regs[0x13], 1);
	/* reset 0x17 SensorClk enable inv Clk 0x60 */
				/*fixme: ov7630 [17]=68 8f (+20 if 102)*/
	reg_w(gspca_dev, 0x17, &regs[0x17], 1);
	/*MCKSIZE ->3 */	/*fixme: not ov7630*/
	reg_w(gspca_dev, 0x19, &regs[0x19], 1);
	/* AE_STRX AE_STRY AE_ENDX AE_ENDY */
	reg_w(gspca_dev, 0x1c, &regs[0x1c], 4);
	/* Enable video transfert */
	reg_w(gspca_dev, 0x01, &regs[0x01], 1);
	/* Compression */
	reg_w(gspca_dev, 0x18, &regs[0x18], 2);
	msleep(20);

	sd->reg11 = -1;

	setgain(gspca_dev);
	setbrightness(gspca_dev);
	setexposure(gspca_dev);
	setfreq(gspca_dev);

	sd->frames_to_drop = 0;
	sd->autogain_ignore_frames = 0;
	gspca_dev->exp_too_high_cnt = 0;
	gspca_dev->exp_too_low_cnt = 0;
	atomic_set(&sd->avg_lum, -1);
	return gspca_dev->usb_err;
}

static void sd_stopN(struct gspca_dev *gspca_dev)
{
	sd_init(gspca_dev);
}

static u8* find_sof(struct gspca_dev *gspca_dev, u8 *data, int len)
{
	struct sd *sd = (struct sd *) gspca_dev;
	int i, header_size = (sd->bridge == BRIDGE_103) ? 18 : 12;

	/* frames start with:
	 *	ff ff 00 c4 c4 96	synchro
	 *	00		(unknown)
	 *	xx		(frame sequence / size / compression)
	 *	(xx)		(idem - extra byte for sn9c103)
	 *	ll mm		brightness sum inside auto exposure
	 *	ll mm		brightness sum outside auto exposure
	 *	(xx xx xx xx xx)	audio values for snc103
	 */
	for (i = 0; i < len; i++) {
		switch (sd->header_read) {
		case 0:
			if (data[i] == 0xff)
				sd->header_read++;
			break;
		case 1:
			if (data[i] == 0xff)
				sd->header_read++;
			else
				sd->header_read = 0;
			break;
		case 2:
			if (data[i] == 0x00)
				sd->header_read++;
			else if (data[i] != 0xff)
				sd->header_read = 0;
			break;
		case 3:
			if (data[i] == 0xc4)
				sd->header_read++;
			else if (data[i] == 0xff)
				sd->header_read = 1;
			else
				sd->header_read = 0;
			break;
		case 4:
			if (data[i] == 0xc4)
				sd->header_read++;
			else if (data[i] == 0xff)
				sd->header_read = 1;
			else
				sd->header_read = 0;
			break;
		case 5:
			if (data[i] == 0x96)
				sd->header_read++;
			else if (data[i] == 0xff)
				sd->header_read = 1;
			else
				sd->header_read = 0;
			break;
		default:
			sd->header[sd->header_read - 6] = data[i];
			sd->header_read++;
			if (sd->header_read == header_size) {
				sd->header_read = 0;
				return data + i + 1;
			}
		}
	}
	return NULL;
}

static void sd_pkt_scan(struct gspca_dev *gspca_dev,
			u8 *data,			/* isoc packet */
			int len)			/* iso packet length */
{
	int fr_h_sz = 0, lum_offset = 0, len_after_sof = 0;
	struct sd *sd = (struct sd *) gspca_dev;
	struct cam *cam = &gspca_dev->cam;
	u8 *sof;

	sof = find_sof(gspca_dev, data, len);
	if (sof) {
		if (sd->bridge == BRIDGE_103) {
			fr_h_sz = 18;
			lum_offset = 3;
		} else {
			fr_h_sz = 12;
			lum_offset = 2;
		}

		len_after_sof = len - (sof - data);
		len = (sof - data) - fr_h_sz;
		if (len < 0)
			len = 0;
	}

	if (cam->cam_mode[gspca_dev->curr_mode].priv & MODE_RAW) {
		/* In raw mode we sometimes get some garbage after the frame
		   ignore this */
		int used;
		int size = cam->cam_mode[gspca_dev->curr_mode].sizeimage;

		used = gspca_dev->image_len;
		if (used + len > size)
			len = size - used;
	}

	gspca_frame_add(gspca_dev, INTER_PACKET, data, len);

	if (sof) {
		int  lum = sd->header[lum_offset] +
			  (sd->header[lum_offset + 1] << 8);

		/* When exposure changes midway a frame we
		   get a lum of 0 in this case drop 2 frames
		   as the frames directly after an exposure
		   change have an unstable image. Sometimes lum
		   *really* is 0 (cam used in low light with
		   low exposure setting), so do not drop frames
		   if the previous lum was 0 too. */
		if (lum == 0 && sd->prev_avg_lum != 0) {
			lum = -1;
			sd->frames_to_drop = 2;
			sd->prev_avg_lum = 0;
		} else
			sd->prev_avg_lum = lum;
		atomic_set(&sd->avg_lum, lum);

		if (sd->frames_to_drop)
			sd->frames_to_drop--;
		else
			gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);

		gspca_frame_add(gspca_dev, FIRST_PACKET, sof, len_after_sof);
	}
}

#if IS_ENABLED(CONFIG_INPUT)
static int sd_int_pkt_scan(struct gspca_dev *gspca_dev,
			u8 *data,		/* interrupt packet data */
			int len)		/* interrupt packet length */
{
	int ret = -EINVAL;

	if (len == 1 && data[0] == 1) {
		input_report_key(gspca_dev->input_dev, KEY_CAMERA, 1);
		input_sync(gspca_dev->input_dev);
		input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0);
		input_sync(gspca_dev->input_dev);
		ret = 0;
	}

	return ret;
}
#endif

/* sub-driver description */
static const struct sd_desc sd_desc = {
	.name = MODULE_NAME,
	.config = sd_config,
	.init = sd_init,
	.init_controls = sd_init_controls,
	.start = sd_start,
	.stopN = sd_stopN,
	.pkt_scan = sd_pkt_scan,
	.dq_callback = do_autogain,
#if IS_ENABLED(CONFIG_INPUT)
	.int_pkt_scan = sd_int_pkt_scan,
#endif
};

/* -- module initialisation -- */
#define SB(sensor, bridge) \
	.driver_info = (SENSOR_ ## sensor << 8) | BRIDGE_ ## bridge


static const struct usb_device_id device_table[] = {
	{USB_DEVICE(0x0c45, 0x6001), SB(TAS5110C, 102)}, /* TAS5110C1B */
	{USB_DEVICE(0x0c45, 0x6005), SB(TAS5110C, 101)}, /* TAS5110C1B */
	{USB_DEVICE(0x0c45, 0x6007), SB(TAS5110D, 101)}, /* TAS5110D */
	{USB_DEVICE(0x0c45, 0x6009), SB(PAS106, 101)},
	{USB_DEVICE(0x0c45, 0x600d), SB(PAS106, 101)},
	{USB_DEVICE(0x0c45, 0x6011), SB(OV6650, 101)},
	{USB_DEVICE(0x0c45, 0x6019), SB(OV7630, 101)},
#if !IS_ENABLED(CONFIG_USB_SN9C102)
	{USB_DEVICE(0x0c45, 0x6024), SB(TAS5130CXX, 102)},
	{USB_DEVICE(0x0c45, 0x6025), SB(TAS5130CXX, 102)},
#endif
	{USB_DEVICE(0x0c45, 0x6027), SB(OV7630, 101)}, /* Genius Eye 310 */
	{USB_DEVICE(0x0c45, 0x6028), SB(PAS202, 102)},
	{USB_DEVICE(0x0c45, 0x6029), SB(PAS106, 102)},
	{USB_DEVICE(0x0c45, 0x602a), SB(HV7131D, 102)},
	/* {USB_DEVICE(0x0c45, 0x602b), SB(MI0343, 102)}, */
	{USB_DEVICE(0x0c45, 0x602c), SB(OV7630, 102)},
	{USB_DEVICE(0x0c45, 0x602d), SB(HV7131R, 102)},
	{USB_DEVICE(0x0c45, 0x602e), SB(OV7630, 102)},
	/* {USB_DEVICE(0x0c45, 0x6030), SB(MI03XX, 102)}, */ /* MI0343 MI0360 MI0330 */
	/* {USB_DEVICE(0x0c45, 0x6082), SB(MI03XX, 103)}, */ /* MI0343 MI0360 */
	{USB_DEVICE(0x0c45, 0x6083), SB(HV7131D, 103)},
	{USB_DEVICE(0x0c45, 0x608c), SB(HV7131R, 103)},
	/* {USB_DEVICE(0x0c45, 0x608e), SB(CISVF10, 103)}, */
	{USB_DEVICE(0x0c45, 0x608f), SB(OV7630, 103)},
	{USB_DEVICE(0x0c45, 0x60a8), SB(PAS106, 103)},
	{USB_DEVICE(0x0c45, 0x60aa), SB(TAS5130CXX, 103)},
	{USB_DEVICE(0x0c45, 0x60af), SB(PAS202, 103)},
	{USB_DEVICE(0x0c45, 0x60b0), SB(OV7630, 103)},
	{}
};
MODULE_DEVICE_TABLE(usb, device_table);

/* -- device connect -- */
static int sd_probe(struct usb_interface *intf,
			const struct usb_device_id *id)
{
	return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
				THIS_MODULE);
}

static struct usb_driver sd_driver = {
	.name = MODULE_NAME,
	.id_table = device_table,
	.probe = sd_probe,
	.disconnect = gspca_disconnect,
#ifdef CONFIG_PM
	.suspend = gspca_suspend,
	.resume = gspca_resume,
	.reset_resume = gspca_resume,
#endif
};

module_usb_driver(sd_driver);