aboutsummaryrefslogtreecommitdiff
path: root/drivers/media/video/gspca/spca561.c
blob: 259a0c73c664b9c02966ba3253d41981b8eeae83 (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
/*
 * Sunplus spca561 subdriver
 *
 * Copyright (C) 2004 Michel Xhaard mxhaard@magic.fr
 *
 * V4L2 by Jean-Francois Moine <http://moinejf.free.fr>
 *
 * 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
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#define MODULE_NAME "spca561"

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

MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>");
MODULE_DESCRIPTION("GSPCA/SPCA561 USB Camera Driver");
MODULE_LICENSE("GPL");

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

	__u16 exposure;			/* rev12a only */
#define EXPOSURE_MIN 1
#define EXPOSURE_DEF 700		/* == 10 fps */
#define EXPOSURE_MAX (2047 + 325)	/* see setexposure */

	__u8 contrast;			/* rev72a only */
#define CONTRAST_MIN 0x00
#define CONTRAST_DEF 0x20
#define CONTRAST_MAX 0x3f

	__u8 brightness;		/* rev72a only */
#define BRIGHTNESS_MIN 0
#define BRIGHTNESS_DEF 0x20
#define BRIGHTNESS_MAX 0x3f

	__u8 white;
#define HUE_MIN 1
#define HUE_DEF 0x40
#define HUE_MAX 0x7f

	__u8 autogain;
#define AUTOGAIN_MIN 0
#define AUTOGAIN_DEF 1
#define AUTOGAIN_MAX 1

	__u8 gain;			/* rev12a only */
#define GAIN_MIN 0
#define GAIN_DEF 63
#define GAIN_MAX 255

#define EXPO12A_DEF 3
	__u8 expo12a;		/* expo/gain? for rev 12a */

	__u8 chip_revision;
#define Rev012A 0
#define Rev072A 1

	signed char ag_cnt;
#define AG_CNT_START 13
};

static const struct v4l2_pix_format sif_012a_mode[] = {
	{160, 120, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
		.bytesperline = 160,
		.sizeimage = 160 * 120,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 3},
	{176, 144, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
		.bytesperline = 176,
		.sizeimage = 176 * 144,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 2},
	{320, 240, V4L2_PIX_FMT_SPCA561, V4L2_FIELD_NONE,
		.bytesperline = 320,
		.sizeimage = 320 * 240 * 4 / 8,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 1},
	{352, 288, V4L2_PIX_FMT_SPCA561, V4L2_FIELD_NONE,
		.bytesperline = 352,
		.sizeimage = 352 * 288 * 4 / 8,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 0},
};

static const struct v4l2_pix_format sif_072a_mode[] = {
	{160, 120, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
		.bytesperline = 160,
		.sizeimage = 160 * 120,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 3},
	{176, 144, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
		.bytesperline = 176,
		.sizeimage = 176 * 144,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 2},
	{320, 240, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
		.bytesperline = 320,
		.sizeimage = 320 * 240,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 1},
	{352, 288, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
		.bytesperline = 352,
		.sizeimage = 352 * 288,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 0},
};

/*
 * Initialization data
 * I'm not very sure how to split initialization from open data
 * chunks. For now, we'll consider everything as initialization
 */
/* Frame packet header offsets for the spca561 */
#define SPCA561_OFFSET_SNAP 1
#define SPCA561_OFFSET_TYPE 2
#define SPCA561_OFFSET_COMPRESS 3
#define SPCA561_OFFSET_FRAMSEQ   4
#define SPCA561_OFFSET_GPIO 5
#define SPCA561_OFFSET_USBBUFF 6
#define SPCA561_OFFSET_WIN2GRAVE 7
#define SPCA561_OFFSET_WIN2RAVE 8
#define SPCA561_OFFSET_WIN2BAVE 9
#define SPCA561_OFFSET_WIN2GBAVE 10
#define SPCA561_OFFSET_WIN1GRAVE 11
#define SPCA561_OFFSET_WIN1RAVE 12
#define SPCA561_OFFSET_WIN1BAVE 13
#define SPCA561_OFFSET_WIN1GBAVE 14
#define SPCA561_OFFSET_FREQ 15
#define SPCA561_OFFSET_VSYNC 16
#define SPCA561_INDEX_I2C_BASE 0x8800
#define SPCA561_SNAPBIT 0x20
#define SPCA561_SNAPCTRL 0x40

static const u16 rev72a_reset[][2] = {
	{0x0000, 0x8114},	/* Software GPIO output data */
	{0x0001, 0x8114},	/* Software GPIO output data */
	{0x0000, 0x8112},	/* Some kind of reset */
	{}
};
static const __u16 rev72a_init_data1[][2] = {
	{0x0003, 0x8701},	/* PCLK clock delay adjustment */
	{0x0001, 0x8703},	/* HSYNC from cmos inverted */
	{0x0011, 0x8118},	/* Enable and conf sensor */
	{0x0001, 0x8118},	/* Conf sensor */
	{0x0092, 0x8804},	/* I know nothing about these */
	{0x0010, 0x8802},	/* 0x88xx registers, so I won't */
	{}
};
static const u16 rev72a_init_sensor1[][2] = {
	{0x0001, 0x000d},
	{0x0002, 0x0018},
	{0x0004, 0x0165},
	{0x0005, 0x0021},
	{0x0007, 0x00aa},
	{0x0020, 0x1504},
	{0x0039, 0x0002},
	{0x0035, 0x0010},
	{0x0009, 0x1049},
	{0x0028, 0x000b},
	{0x003b, 0x000f},
	{0x003c, 0x0000},
	{}
};
static const __u16 rev72a_init_data2[][2] = {
	{0x0018, 0x8601},	/* Pixel/line selection for color separation */
	{0x0000, 0x8602},	/* Optical black level for user setting */
	{0x0060, 0x8604},	/* Optical black horizontal offset */
	{0x0002, 0x8605},	/* Optical black vertical offset */
	{0x0000, 0x8603},	/* Non-automatic optical black level */
	{0x0002, 0x865b},	/* Horizontal offset for valid pixels */
	{0x0000, 0x865f},	/* Vertical valid pixels window (x2) */
	{0x00b0, 0x865d},	/* Horizontal valid pixels window (x2) */
	{0x0090, 0x865e},	/* Vertical valid lines window (x2) */
	{0x00e0, 0x8406},	/* Memory buffer threshold */
	{0x0000, 0x8660},	/* Compensation memory stuff */
	{0x0002, 0x8201},	/* Output address for r/w serial EEPROM */
	{0x0008, 0x8200},	/* Clear valid bit for serial EEPROM */
	{0x0001, 0x8200},	/* OprMode to be executed by hardware */
/* from ms-win */
	{0x0000, 0x8611},	/* R offset for white balance */
	{0x00fd, 0x8612},	/* Gr offset for white balance */
	{0x0003, 0x8613},	/* B offset for white balance */
	{0x0000, 0x8614},	/* Gb offset for white balance */
/* from ms-win */
	{0x0035, 0x8651},	/* R gain for white balance */
	{0x0040, 0x8652},	/* Gr gain for white balance */
	{0x005f, 0x8653},	/* B gain for white balance */
	{0x0040, 0x8654},	/* Gb gain for white balance */
	{0x0002, 0x8502},	/* Maximum average bit rate stuff */
	{0x0011, 0x8802},

	{0x0087, 0x8700},	/* Set master clock (96Mhz????) */
	{0x0081, 0x8702},	/* Master clock output enable */

	{0x0000, 0x8500},	/* Set image type (352x288 no compression) */
	/* Originally was 0x0010 (352x288 compression) */

	{0x0002, 0x865b},	/* Horizontal offset for valid pixels */
	{0x0003, 0x865c},	/* Vertical offset for valid lines */
	{}
};
static const u16 rev72a_init_sensor2[][2] = {
	{0x0003, 0x0121},
	{0x0004, 0x0165},
	{0x0005, 0x002f},	/* blanking control column */
	{0x0006, 0x0000},	/* blanking mode row*/
	{0x000a, 0x0002},
	{0x0009, 0x1061},	/* setexposure times && pixel clock
				 * 0001 0 | 000 0110 0001 */
	{0x0035, 0x0014},
	{}
};

/******************** QC Express etch2 stuff ********************/
static const __u16 Pb100_1map8300[][2] = {
	/* reg, value */
	{0x8320, 0x3304},

	{0x8303, 0x0125},	/* image area */
	{0x8304, 0x0169},
	{0x8328, 0x000b},
	{0x833c, 0x0001},		/*fixme: win:07*/

	{0x832f, 0x1904},		/*fixme: was 0419*/
	{0x8307, 0x00aa},
	{0x8301, 0x0003},
	{0x8302, 0x000e},
	{}
};
static const __u16 Pb100_2map8300[][2] = {
	/* reg, value */
	{0x8339, 0x0000},
	{0x8307, 0x00aa},
	{}
};

static const __u16 spca561_161rev12A_data1[][2] = {
	{0x29, 0x8118},		/* Control register (various enable bits) */
	{0x08, 0x8114},		/* GPIO: Led off */
	{0x0e, 0x8112},		/* 0x0e stream off 0x3e stream on */
	{0x00, 0x8102},		/* white balance - new */
	{0x92, 0x8804},
	{0x04, 0x8802},		/* windows uses 08 */
	{}
};
static const __u16 spca561_161rev12A_data2[][2] = {
	{0x21, 0x8118},
	{0x10, 0x8500},
	{0x07, 0x8601},
	{0x07, 0x8602},
	{0x04, 0x8501},

	{0x07, 0x8201},		/* windows uses 02 */
	{0x08, 0x8200},
	{0x01, 0x8200},

	{0x90, 0x8604},
	{0x00, 0x8605},
	{0xb0, 0x8603},

	/* sensor gains */
	{0x07, 0x8601},		/* white balance - new */
	{0x07, 0x8602},		/* white balance - new */
	{0x00, 0x8610},		/* *red */
	{0x00, 0x8611},		/* 3f   *green */
	{0x00, 0x8612},		/* green *blue */
	{0x00, 0x8613},		/* blue *green */
	{0x43, 0x8614},		/* green *red - white balance - was 0x35 */
	{0x40, 0x8615},		/* 40   *green - white balance - was 0x35 */
	{0x71, 0x8616},		/* 7a   *blue - white balance - was 0x35 */
	{0x40, 0x8617},		/* 40   *green - white balance - was 0x35 */

	{0x0c, 0x8620},		/* 0c */
	{0xc8, 0x8631},		/* c8 */
	{0xc8, 0x8634},		/* c8 */
	{0x23, 0x8635},		/* 23 */
	{0x1f, 0x8636},		/* 1f */
	{0xdd, 0x8637},		/* dd */
	{0xe1, 0x8638},		/* e1 */
	{0x1d, 0x8639},		/* 1d */
	{0x21, 0x863a},		/* 21 */
	{0xe3, 0x863b},		/* e3 */
	{0xdf, 0x863c},		/* df */
	{0xf0, 0x8505},
	{0x32, 0x850a},
/*	{0x99, 0x8700},		 * - white balance - new (removed) */
	/* HDG we used to do this in stop0, making the init state and the state
	   after a start / stop different, so do this here instead. */
	{0x29, 0x8118},
	{}
};

static void reg_w_val(struct usb_device *dev, __u16 index, __u8 value)
{
	int ret;

	ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
			      0,		/* request */
			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
			      value, index, NULL, 0, 500);
	PDEBUG(D_USBO, "reg write: 0x%02x:0x%02x", index, value);
	if (ret < 0)
		pr_err("reg write: error %d\n", ret);
}

static void write_vector(struct gspca_dev *gspca_dev,
			const __u16 data[][2])
{
	struct usb_device *dev = gspca_dev->dev;
	int i;

	i = 0;
	while (data[i][1] != 0) {
		reg_w_val(dev, data[i][1], data[i][0]);
		i++;
	}
}

/* read 'len' bytes to gspca_dev->usb_buf */
static void reg_r(struct gspca_dev *gspca_dev,
		  __u16 index, __u16 length)
{
	usb_control_msg(gspca_dev->dev,
			usb_rcvctrlpipe(gspca_dev->dev, 0),
			0,			/* request */
			USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
			0,			/* value */
			index, gspca_dev->usb_buf, length, 500);
}

/* write 'len' bytes from gspca_dev->usb_buf */
static void reg_w_buf(struct gspca_dev *gspca_dev,
		      __u16 index, __u16 len)
{
	usb_control_msg(gspca_dev->dev,
			usb_sndctrlpipe(gspca_dev->dev, 0),
			0,			/* request */
			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
			0,			/* value */
			index, gspca_dev->usb_buf, len, 500);
}

static void i2c_write(struct gspca_dev *gspca_dev, __u16 value, __u16 reg)
{
	int retry = 60;

	reg_w_val(gspca_dev->dev, 0x8801, reg);
	reg_w_val(gspca_dev->dev, 0x8805, value);
	reg_w_val(gspca_dev->dev, 0x8800, value >> 8);
	do {
		reg_r(gspca_dev, 0x8803, 1);
		if (!gspca_dev->usb_buf[0])
			return;
		msleep(10);
	} while (--retry);
}

static int i2c_read(struct gspca_dev *gspca_dev, __u16 reg, __u8 mode)
{
	int retry = 60;
	__u8 value;

	reg_w_val(gspca_dev->dev, 0x8804, 0x92);
	reg_w_val(gspca_dev->dev, 0x8801, reg);
	reg_w_val(gspca_dev->dev, 0x8802, mode | 0x01);
	do {
		reg_r(gspca_dev, 0x8803, 1);
		if (!gspca_dev->usb_buf[0]) {
			reg_r(gspca_dev, 0x8800, 1);
			value = gspca_dev->usb_buf[0];
			reg_r(gspca_dev, 0x8805, 1);
			return ((int) value << 8) | gspca_dev->usb_buf[0];
		}
		msleep(10);
	} while (--retry);
	return -1;
}

static void sensor_mapwrite(struct gspca_dev *gspca_dev,
			    const __u16 (*sensormap)[2])
{
	while ((*sensormap)[0]) {
		gspca_dev->usb_buf[0] = (*sensormap)[1];
		gspca_dev->usb_buf[1] = (*sensormap)[1] >> 8;
		reg_w_buf(gspca_dev, (*sensormap)[0], 2);
		sensormap++;
	}
}

static void write_sensor_72a(struct gspca_dev *gspca_dev,
			    const __u16 (*sensor)[2])
{
	while ((*sensor)[0]) {
		i2c_write(gspca_dev, (*sensor)[1], (*sensor)[0]);
		sensor++;
	}
}

static void init_161rev12A(struct gspca_dev *gspca_dev)
{
	write_vector(gspca_dev, spca561_161rev12A_data1);
	sensor_mapwrite(gspca_dev, Pb100_1map8300);
/*fixme: should be in sd_start*/
	write_vector(gspca_dev, spca561_161rev12A_data2);
	sensor_mapwrite(gspca_dev, Pb100_2map8300);
}

/* 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;
	__u16 vendor, product;
	__u8 data1, data2;

	/* Read frm global register the USB product and vendor IDs, just to
	 * prove that we can communicate with the device.  This works, which
	 * confirms at we are communicating properly and that the device
	 * is a 561. */
	reg_r(gspca_dev, 0x8104, 1);
	data1 = gspca_dev->usb_buf[0];
	reg_r(gspca_dev, 0x8105, 1);
	data2 = gspca_dev->usb_buf[0];
	vendor = (data2 << 8) | data1;
	reg_r(gspca_dev, 0x8106, 1);
	data1 = gspca_dev->usb_buf[0];
	reg_r(gspca_dev, 0x8107, 1);
	data2 = gspca_dev->usb_buf[0];
	product = (data2 << 8) | data1;
	if (vendor != id->idVendor || product != id->idProduct) {
		PDEBUG(D_PROBE, "Bad vendor / product from device");
		return -EINVAL;
	}

	cam = &gspca_dev->cam;
	gspca_dev->nbalt = 7 + 1;	/* choose alternate 7 first */

	sd->chip_revision = id->driver_info;
	if (sd->chip_revision == Rev012A) {
		cam->cam_mode = sif_012a_mode;
		cam->nmodes = ARRAY_SIZE(sif_012a_mode);
	} else {
		cam->cam_mode = sif_072a_mode;
		cam->nmodes = ARRAY_SIZE(sif_072a_mode);
	}
	sd->brightness = BRIGHTNESS_DEF;
	sd->contrast = CONTRAST_DEF;
	sd->white = HUE_DEF;
	sd->exposure = EXPOSURE_DEF;
	sd->autogain = AUTOGAIN_DEF;
	sd->gain = GAIN_DEF;
	sd->expo12a = EXPO12A_DEF;
	return 0;
}

/* this function is called at probe and resume time */
static int sd_init_12a(struct gspca_dev *gspca_dev)
{
	PDEBUG(D_STREAM, "Chip revision: 012a");
	init_161rev12A(gspca_dev);
	return 0;
}
static int sd_init_72a(struct gspca_dev *gspca_dev)
{
	PDEBUG(D_STREAM, "Chip revision: 072a");
	write_vector(gspca_dev, rev72a_reset);
	msleep(200);
	write_vector(gspca_dev, rev72a_init_data1);
	write_sensor_72a(gspca_dev, rev72a_init_sensor1);
	write_vector(gspca_dev, rev72a_init_data2);
	write_sensor_72a(gspca_dev, rev72a_init_sensor2);
	reg_w_val(gspca_dev->dev, 0x8112, 0x30);
	return 0;
}

/* rev 72a only */
static void setbrightness(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;
	struct usb_device *dev = gspca_dev->dev;
	__u8 value;

	value = sd->brightness;

	/* offsets for white balance */
	reg_w_val(dev, 0x8611, value);		/* R */
	reg_w_val(dev, 0x8612, value);		/* Gr */
	reg_w_val(dev, 0x8613, value);		/* B */
	reg_w_val(dev, 0x8614, value);		/* Gb */
}

static void setwhite(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;
	__u16 white;
	__u8 blue, red;
	__u16 reg;

	/* try to emulate MS-win as possible */
	white = sd->white;
	red = 0x20 + white * 3 / 8;
	blue = 0x90 - white * 5 / 8;
	if (sd->chip_revision == Rev012A) {
		reg = 0x8614;
	} else {
		reg = 0x8651;
		red += sd->contrast - 0x20;
		blue += sd->contrast - 0x20;
	}
	reg_w_val(gspca_dev->dev, reg, red);
	reg_w_val(gspca_dev->dev, reg + 2, blue);
}

static void setcontrast(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;
	struct usb_device *dev = gspca_dev->dev;
	__u8 value;

	if (sd->chip_revision != Rev072A)
		return;
	value = sd->contrast + 0x20;

	/* gains for white balance */
	setwhite(gspca_dev);
/*	reg_w_val(dev, 0x8651, value);		 * R - done by setwhite */
	reg_w_val(dev, 0x8652, value);		/* Gr */
/*	reg_w_val(dev, 0x8653, value);		 * B - done by setwhite */
	reg_w_val(dev, 0x8654, value);		/* Gb */
}

/* rev 12a only */
static void setexposure(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;
	int i, expo = 0;

	/* Register 0x8309 controls exposure for the spca561,
	   the basic exposure setting goes from 1-2047, where 1 is completely
	   dark and 2047 is very bright. It not only influences exposure but
	   also the framerate (to allow for longer exposure) from 1 - 300 it
	   only raises the exposure time then from 300 - 600 it halves the
	   framerate to be able to further raise the exposure time and for every
	   300 more it halves the framerate again. This allows for a maximum
	   exposure time of circa 0.2 - 0.25 seconds (30 / (2000/3000) fps).
	   Sometimes this is not enough, the 1-2047 uses bits 0-10, bits 11-12
	   configure a divider for the base framerate which us used at the
	   exposure setting of 1-300. These bits configure the base framerate
	   according to the following formula: fps = 60 / (value + 2) */

	/* We choose to use the high bits setting the fixed framerate divisor
	   asap, as setting high basic exposure setting without the fixed
	   divider in combination with high gains makes the cam stop */
	int table[] =  { 0, 450, 550, 625, EXPOSURE_MAX };

	for (i = 0; i < ARRAY_SIZE(table) - 1; i++) {
		if (sd->exposure <= table[i + 1]) {
			expo  = sd->exposure - table[i];
			if (i)
				expo += 300;
			expo |= i << 11;
			break;
		}
	}

	gspca_dev->usb_buf[0] = expo;
	gspca_dev->usb_buf[1] = expo >> 8;
	reg_w_buf(gspca_dev, 0x8309, 2);
}

/* rev 12a only */
static void setgain(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;

	/* gain reg low 6 bits  0-63 gain, bit 6 and 7, both double the
	   sensitivity when set, so 31 + one of them set == 63, and 15
	   with both of them set == 63 */
	if (sd->gain < 64)
		gspca_dev->usb_buf[0] = sd->gain;
	else if (sd->gain < 128)
		gspca_dev->usb_buf[0] = (sd->gain / 2) | 0x40;
	else
		gspca_dev->usb_buf[0] = (sd->gain / 4) | 0xc0;

	gspca_dev->usb_buf[1] = 0;
	reg_w_buf(gspca_dev, 0x8335, 2);
}

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

	if (sd->autogain)
		sd->ag_cnt = AG_CNT_START;
	else
		sd->ag_cnt = -1;
}

static int sd_start_12a(struct gspca_dev *gspca_dev)
{
	struct usb_device *dev = gspca_dev->dev;
	int mode;
	static const __u8 Reg8391[8] =
		{0x92, 0x30, 0x20, 0x00, 0x0c, 0x00, 0x00, 0x00};

	mode = gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv;
	if (mode <= 1) {
		/* Use compression on 320x240 and above */
		reg_w_val(dev, 0x8500, 0x10 | mode);
	} else {
		/* I couldn't get the compression to work below 320x240
		 * Fortunately at these resolutions the bandwidth
		 * is sufficient to push raw frames at ~20fps */
		reg_w_val(dev, 0x8500, mode);
	}		/* -- qq@kuku.eu.org */

	gspca_dev->usb_buf[0] = 0xaa;
	gspca_dev->usb_buf[1] = 0x00;
	reg_w_buf(gspca_dev, 0x8307, 2);
	/* clock - lower 0x8X values lead to fps > 30 */
	reg_w_val(gspca_dev->dev, 0x8700, 0x8a);
					/* 0x8f 0x85 0x27 clock */
	reg_w_val(gspca_dev->dev, 0x8112, 0x1e | 0x20);
	reg_w_val(gspca_dev->dev, 0x850b, 0x03);
	memcpy(gspca_dev->usb_buf, Reg8391, 8);
	reg_w_buf(gspca_dev, 0x8391, 8);
	reg_w_buf(gspca_dev, 0x8390, 8);
	setwhite(gspca_dev);
	setgain(gspca_dev);
	setexposure(gspca_dev);

	/* Led ON (bit 3 -> 0 */
	reg_w_val(gspca_dev->dev, 0x8114, 0x00);
	return 0;
}
static int sd_start_72a(struct gspca_dev *gspca_dev)
{
	struct usb_device *dev = gspca_dev->dev;
	int Clck;
	int mode;

	write_vector(gspca_dev, rev72a_reset);
	msleep(200);
	write_vector(gspca_dev, rev72a_init_data1);
	write_sensor_72a(gspca_dev, rev72a_init_sensor1);

	mode = gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv;
	switch (mode) {
	default:
	case 0:
		Clck = 0x27;		/* ms-win 0x87 */
		break;
	case 1:
		Clck = 0x25;
		break;
	case 2:
		Clck = 0x22;
		break;
	case 3:
		Clck = 0x21;
		break;
	}
	reg_w_val(dev, 0x8700, Clck);	/* 0x27 clock */
	reg_w_val(dev, 0x8702, 0x81);
	reg_w_val(dev, 0x8500, mode);	/* mode */
	write_sensor_72a(gspca_dev, rev72a_init_sensor2);
	setcontrast(gspca_dev);
/*	setbrightness(gspca_dev);	 * fixme: bad values */
	setautogain(gspca_dev);
	reg_w_val(dev, 0x8112, 0x10 | 0x20);
	return 0;
}

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

	if (sd->chip_revision == Rev012A) {
		reg_w_val(gspca_dev->dev, 0x8112, 0x0e);
		/* Led Off (bit 3 -> 1 */
		reg_w_val(gspca_dev->dev, 0x8114, 0x08);
	} else {
		reg_w_val(gspca_dev->dev, 0x8112, 0x20);
/*		reg_w_val(gspca_dev->dev, 0x8102, 0x00); ?? */
	}
}

static void do_autogain(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;
	int expotimes;
	int pixelclk;
	int gainG;
	__u8 R, Gr, Gb, B;
	int y;
	__u8 luma_mean = 110;
	__u8 luma_delta = 20;
	__u8 spring = 4;

	if (sd->ag_cnt < 0)
		return;
	if (--sd->ag_cnt >= 0)
		return;
	sd->ag_cnt = AG_CNT_START;

	switch (sd->chip_revision) {
	case Rev072A:
		reg_r(gspca_dev, 0x8621, 1);
		Gr = gspca_dev->usb_buf[0];
		reg_r(gspca_dev, 0x8622, 1);
		R = gspca_dev->usb_buf[0];
		reg_r(gspca_dev, 0x8623, 1);
		B = gspca_dev->usb_buf[0];
		reg_r(gspca_dev, 0x8624, 1);
		Gb = gspca_dev->usb_buf[0];
		y = (77 * R + 75 * (Gr + Gb) + 29 * B) >> 8;
		/* u= (128*B-(43*(Gr+Gb+R))) >> 8; */
		/* v= (128*R-(53*(Gr+Gb))-21*B) >> 8; */
		/* PDEBUG(D_CONF,"reading Y %d U %d V %d ",y,u,v); */

		if (y < luma_mean - luma_delta ||
		    y > luma_mean + luma_delta) {
			expotimes = i2c_read(gspca_dev, 0x09, 0x10);
			pixelclk = 0x0800;
			expotimes = expotimes & 0x07ff;
			/* PDEBUG(D_PACK,
				"Exposition Times 0x%03X Clock 0x%04X ",
				expotimes,pixelclk); */
			gainG = i2c_read(gspca_dev, 0x35, 0x10);
			/* PDEBUG(D_PACK,
				"reading Gain register %d", gainG); */

			expotimes += (luma_mean - y) >> spring;
			gainG += (luma_mean - y) / 50;
			/* PDEBUG(D_PACK,
				"compute expotimes %d gain %d",
				expotimes,gainG); */

			if (gainG > 0x3f)
				gainG = 0x3f;
			else if (gainG < 3)
				gainG = 3;
			i2c_write(gspca_dev, gainG, 0x35);

			if (expotimes > 0x0256)
				expotimes = 0x0256;
			else if (expotimes < 3)
				expotimes = 3;
			i2c_write(gspca_dev, expotimes | pixelclk, 0x09);
		}
		break;
	}
}

static void sd_pkt_scan(struct gspca_dev *gspca_dev,
			u8 *data,		/* isoc packet */
			int len)		/* iso packet length */
{
	struct sd *sd = (struct sd *) gspca_dev;

	len--;
	switch (*data++) {			/* sequence number */
	case 0:					/* start of frame */
		gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);

		/* This should never happen */
		if (len < 2) {
			PDEBUG(D_ERR, "Short SOF packet, ignoring");
			gspca_dev->last_packet_type = DISCARD_PACKET;
			return;
		}

#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
		if (data[0] & 0x20) {
			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);
		}
#endif

		if (data[1] & 0x10) {
			/* compressed bayer */
			gspca_frame_add(gspca_dev, FIRST_PACKET, data, len);
		} else {
			/* raw bayer (with a header, which we skip) */
			if (sd->chip_revision == Rev012A) {
				data += 20;
				len -= 20;
			} else {
				data += 16;
				len -= 16;
			}
			gspca_frame_add(gspca_dev, FIRST_PACKET, data, len);
		}
		return;
	case 0xff:			/* drop (empty mpackets) */
		return;
	}
	gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
}

/* rev 72a only */
static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	sd->brightness = val;
	if (gspca_dev->streaming)
		setbrightness(gspca_dev);
	return 0;
}

static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	*val = sd->brightness;
	return 0;
}

/* rev 72a only */
static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	sd->contrast = val;
	if (gspca_dev->streaming)
		setcontrast(gspca_dev);
	return 0;
}

static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	*val = sd->contrast;
	return 0;
}

static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	sd->autogain = val;
	if (gspca_dev->streaming)
		setautogain(gspca_dev);
	return 0;
}

static int sd_getautogain(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	*val = sd->autogain;
	return 0;
}

static int sd_setwhite(struct gspca_dev *gspca_dev, __s32 val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	sd->white = val;
	if (gspca_dev->streaming)
		setwhite(gspca_dev);
	return 0;
}

static int sd_getwhite(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	*val = sd->white;
	return 0;
}

/* rev12a only */
static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	sd->exposure = val;
	if (gspca_dev->streaming)
		setexposure(gspca_dev);
	return 0;
}

static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	*val = sd->exposure;
	return 0;
}

/* rev12a only */
static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	sd->gain = val;
	if (gspca_dev->streaming)
		setgain(gspca_dev);
	return 0;
}

static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	*val = sd->gain;
	return 0;
}

/* control tables */
static const struct ctrl sd_ctrls_12a[] = {
	{
	    {
		.id = V4L2_CID_HUE,
		.type = V4L2_CTRL_TYPE_INTEGER,
		.name = "Hue",
		.minimum = HUE_MIN,
		.maximum = HUE_MAX,
		.step = 1,
		.default_value = HUE_DEF,
	    },
	    .set = sd_setwhite,
	    .get = sd_getwhite,
	},
	{
	    {
		.id = V4L2_CID_EXPOSURE,
		.type = V4L2_CTRL_TYPE_INTEGER,
		.name = "Exposure",
		.minimum = EXPOSURE_MIN,
		.maximum = EXPOSURE_MAX,
		.step = 1,
		.default_value = EXPOSURE_DEF,
	    },
	    .set = sd_setexposure,
	    .get = sd_getexposure,
	},
	{
	    {
		.id = V4L2_CID_GAIN,
		.type = V4L2_CTRL_TYPE_INTEGER,
		.name = "Gain",
		.minimum = GAIN_MIN,
		.maximum = GAIN_MAX,
		.step = 1,
		.default_value = GAIN_DEF,
	    },
	    .set = sd_setgain,
	    .get = sd_getgain,
	},
};

static const struct ctrl sd_ctrls_72a[] = {
	{
	    {
		.id = V4L2_CID_HUE,
		.type = V4L2_CTRL_TYPE_INTEGER,
		.name = "Hue",
		.minimum = HUE_MIN,
		.maximum = HUE_MAX,
		.step = 1,
		.default_value = HUE_DEF,
	    },
	    .set = sd_setwhite,
	    .get = sd_getwhite,
	},
	{
	   {
		.id = V4L2_CID_BRIGHTNESS,
		.type = V4L2_CTRL_TYPE_INTEGER,
		.name = "Brightness",
		.minimum = BRIGHTNESS_MIN,
		.maximum = BRIGHTNESS_MAX,
		.step = 1,
		.default_value = BRIGHTNESS_DEF,
	    },
	    .set = sd_setbrightness,
	    .get = sd_getbrightness,
	},
	{
	    {
		.id = V4L2_CID_CONTRAST,
		.type = V4L2_CTRL_TYPE_INTEGER,
		.name = "Contrast",
		.minimum = CONTRAST_MIN,
		.maximum = CONTRAST_MAX,
		.step = 1,
		.default_value = CONTRAST_DEF,
	    },
	    .set = sd_setcontrast,
	    .get = sd_getcontrast,
	},
	{
	    {
		.id = V4L2_CID_AUTOGAIN,
		.type = V4L2_CTRL_TYPE_BOOLEAN,
		.name = "Auto Gain",
		.minimum = AUTOGAIN_MIN,
		.maximum = AUTOGAIN_MAX,
		.step = 1,
		.default_value = AUTOGAIN_DEF,
	    },
	    .set = sd_setautogain,
	    .get = sd_getautogain,
	},
};

/* sub-driver description */
static const struct sd_desc sd_desc_12a = {
	.name = MODULE_NAME,
	.ctrls = sd_ctrls_12a,
	.nctrls = ARRAY_SIZE(sd_ctrls_12a),
	.config = sd_config,
	.init = sd_init_12a,
	.start = sd_start_12a,
	.stopN = sd_stopN,
	.pkt_scan = sd_pkt_scan,
#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
	.other_input = 1,
#endif
};
static const struct sd_desc sd_desc_72a = {
	.name = MODULE_NAME,
	.ctrls = sd_ctrls_72a,
	.nctrls = ARRAY_SIZE(sd_ctrls_72a),
	.config = sd_config,
	.init = sd_init_72a,
	.start = sd_start_72a,
	.stopN = sd_stopN,
	.pkt_scan = sd_pkt_scan,
	.dq_callback = do_autogain,
#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
	.other_input = 1,
#endif
};
static const struct sd_desc *sd_desc[2] = {
	&sd_desc_12a,
	&sd_desc_72a
};

/* -- module initialisation -- */
static const struct usb_device_id device_table[] = {
	{USB_DEVICE(0x041e, 0x401a), .driver_info = Rev072A},
	{USB_DEVICE(0x041e, 0x403b), .driver_info = Rev012A},
	{USB_DEVICE(0x0458, 0x7004), .driver_info = Rev072A},
	{USB_DEVICE(0x0461, 0x0815), .driver_info = Rev072A},
	{USB_DEVICE(0x046d, 0x0928), .driver_info = Rev012A},
	{USB_DEVICE(0x046d, 0x0929), .driver_info = Rev012A},
	{USB_DEVICE(0x046d, 0x092a), .driver_info = Rev012A},
	{USB_DEVICE(0x046d, 0x092b), .driver_info = Rev012A},
	{USB_DEVICE(0x046d, 0x092c), .driver_info = Rev012A},
	{USB_DEVICE(0x046d, 0x092d), .driver_info = Rev012A},
	{USB_DEVICE(0x046d, 0x092e), .driver_info = Rev012A},
	{USB_DEVICE(0x046d, 0x092f), .driver_info = Rev012A},
	{USB_DEVICE(0x04fc, 0x0561), .driver_info = Rev072A},
	{USB_DEVICE(0x060b, 0xa001), .driver_info = Rev072A},
	{USB_DEVICE(0x10fd, 0x7e50), .driver_info = Rev072A},
	{USB_DEVICE(0xabcd, 0xcdee), .driver_info = Rev072A},
	{}
};

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[id->driver_info],
				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,
#endif
};

module_usb_driver(sd_driver);