aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/media/video/gspca/pac7311.c
blob: 5c052e31be4adad49b2eb93e496e0d8c2e89e5a7 (plain) (blame)
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
/*
 *		Pixart PAC7311 library
 *		Copyright (C) 2005 Thomas Kaiser thomas@kaiser-linux.li
 *
 * 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 MODULE_NAME "pac7311"

#include "gspca.h"

#define DRIVER_VERSION_NUMBER	KERNEL_VERSION(2, 1, 7)
static const char version[] = "2.1.7";

MODULE_AUTHOR("Thomas Kaiser thomas@kaiser-linux.li");
MODULE_DESCRIPTION("Pixart PAC7311");
MODULE_LICENSE("GPL");

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

	int avg_lum;

	unsigned char brightness;
	unsigned char contrast;
	unsigned char colors;
	unsigned char autogain;

	char ffseq;
	signed char ag_cnt;
#define AG_CNT_START 13
};

/* V4L2 controls supported by the driver */
static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getautogain(struct gspca_dev *gspca_dev, __s32 *val);

static struct ctrl sd_ctrls[] = {
	{
	    {
		.id      = V4L2_CID_BRIGHTNESS,
		.type    = V4L2_CTRL_TYPE_INTEGER,
		.name    = "Brightness",
		.minimum = 0,
#define BRIGHTNESS_MAX 0x20
		.maximum = BRIGHTNESS_MAX,
		.step    = 1,
#define BRIGHTNESS_DEF 0x10
		.default_value = BRIGHTNESS_DEF,
	    },
	    .set = sd_setbrightness,
	    .get = sd_getbrightness,
	},
	{
	    {
		.id      = V4L2_CID_CONTRAST,
		.type    = V4L2_CTRL_TYPE_INTEGER,
		.name    = "Contrast",
		.minimum = 0,
		.maximum = 255,
		.step    = 1,
#define CONTRAST_DEF 127
		.default_value = CONTRAST_DEF,
	    },
	    .set = sd_setcontrast,
	    .get = sd_getcontrast,
	},
	{
	    {
		.id      = V4L2_CID_SATURATION,
		.type    = V4L2_CTRL_TYPE_INTEGER,
		.name    = "Color",
		.minimum = 0,
		.maximum = 255,
		.step    = 1,
#define COLOR_DEF 127
		.default_value = COLOR_DEF,
	    },
	    .set = sd_setcolors,
	    .get = sd_getcolors,
	},
	{
	    {
		.id      = V4L2_CID_AUTOGAIN,
		.type    = V4L2_CTRL_TYPE_BOOLEAN,
		.name    = "Auto Gain",
		.minimum = 0,
		.maximum = 1,
		.step    = 1,
#define AUTOGAIN_DEF 1
		.default_value = AUTOGAIN_DEF,
	    },
	    .set = sd_setautogain,
	    .get = sd_getautogain,
	},
};

static struct v4l2_pix_format vga_mode[] = {
	{160, 120, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
		.bytesperline = 160,
		.sizeimage = 160 * 120 * 3 / 8 + 590,
		.colorspace = V4L2_COLORSPACE_JPEG,
		.priv = 2},
	{320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
		.bytesperline = 320,
		.sizeimage = 320 * 240 * 3 / 8 + 590,
		.colorspace = V4L2_COLORSPACE_JPEG,
		.priv = 1},
	{640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
		.bytesperline = 640,
		.sizeimage = 640 * 480 * 3 / 8 + 590,
		.colorspace = V4L2_COLORSPACE_JPEG,
		.priv = 0},
};

#define PAC7311_JPEG_HEADER_SIZE (sizeof pac7311_jpeg_header)	/* (594) */

static const __u8 pac7311_jpeg_header[] = {
	0xff, 0xd8,
	0xff, 0xe0, 0x00, 0x03, 0x20,
	0xff, 0xc0, 0x00, 0x11, 0x08,
		0x01, 0xe0,			/* 12: height */
		0x02, 0x80,			/* 14: width */
		0x03,				/* 16 */
			0x01, 0x21, 0x00,
			0x02, 0x11, 0x01,
			0x03, 0x11, 0x01,
	0xff, 0xdb, 0x00, 0x84,
	0x00, 0x10, 0x0b, 0x0c, 0x0e, 0x0c, 0x0a, 0x10, 0x0e, 0x0d,
	0x0e, 0x12, 0x11, 0x10, 0x13, 0x18, 0x28, 0x1a, 0x18, 0x16,
	0x16, 0x18, 0x31, 0x23, 0x25, 0x1d, 0x28, 0x3a, 0x33, 0x3d,
	0x3c, 0x39, 0x33, 0x38, 0x37, 0x40, 0x48, 0x5c, 0x4e, 0x40,
	0x44, 0x57, 0x45, 0x37, 0x38, 0x50, 0x6d, 0x51, 0x57, 0x5f,
	0x62, 0x67, 0x68, 0x67, 0x3e, 0x4d, 0x71, 0x79, 0x70, 0x64,
	0x78, 0x5c, 0x65, 0x67, 0x63, 0x01, 0x11, 0x12, 0x12, 0x18,
	0x15, 0x18, 0x2f, 0x1a, 0x1a, 0x2f, 0x63, 0x42, 0x38, 0x42,
	0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
	0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
	0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
	0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
	0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
	0xff, 0xc4, 0x01, 0xa2, 0x00, 0x00, 0x01, 0x05, 0x01, 0x01,
	0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
	0x09, 0x0a, 0x0b, 0x10, 0x00, 0x02, 0x01, 0x03, 0x03, 0x02,
	0x04, 0x03, 0x05, 0x05, 0x04, 0x04, 0x00, 0x00, 0x01, 0x7d,
	0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, 0x21, 0x31,
	0x41, 0x06, 0x13, 0x51, 0x61, 0x07, 0x22, 0x71, 0x14, 0x32,
	0x81, 0x91, 0xa1, 0x08, 0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52,
	0xd1, 0xf0, 0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16,
	0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a,
	0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x43, 0x44, 0x45,
	0x46, 0x47, 0x48, 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57,
	0x58, 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
	0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x83,
	0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94,
	0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5,
	0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
	0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
	0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8,
	0xd9, 0xda, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8,
	0xe9, 0xea, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
	0xf9, 0xfa, 0x01, 0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01,
	0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a,
	0x0b, 0x11, 0x00, 0x02, 0x01, 0x02, 0x04, 0x04, 0x03, 0x04,
	0x07, 0x05, 0x04, 0x04, 0x00, 0x01, 0x02, 0x77, 0x00, 0x01,
	0x02, 0x03, 0x11, 0x04, 0x05, 0x21, 0x31, 0x06, 0x12, 0x41,
	0x51, 0x07, 0x61, 0x71, 0x13, 0x22, 0x32, 0x81, 0x08, 0x14,
	0x42, 0x91, 0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0,
	0x15, 0x62, 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34, 0xe1, 0x25,
	0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26, 0x27, 0x28, 0x29, 0x2a,
	0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46,
	0x47, 0x48, 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
	0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a,
	0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x82, 0x83,
	0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94,
	0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5,
	0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
	0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
	0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8,
	0xd9, 0xda, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9,
	0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa,
	0xff, 0xda, 0x00, 0x0c, 0x03, 0x01, 0x00, 0x02, 0x11, 0x03,
	0x11, 0x00, 0x3f, 0x00
};

static void reg_w_buf(struct gspca_dev *gspca_dev,
		  __u16 index,
		  const char *buffer, __u16 len)
{
	memcpy(gspca_dev->usb_buf, buffer, len);
	usb_control_msg(gspca_dev->dev,
			usb_sndctrlpipe(gspca_dev->dev, 0),
			1,		/* request */
			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
			0,		/* value */
			index, gspca_dev->usb_buf, len,
			500);
}

static __u8 reg_r(struct gspca_dev *gspca_dev,
			     __u16 index)
{
	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, 1,
			500);
	return gspca_dev->usb_buf[0];
}

static void reg_w(struct gspca_dev *gspca_dev,
		  __u16 index,
		  __u8 value)
{
	gspca_dev->usb_buf[0] = value;
	usb_control_msg(gspca_dev->dev,
			usb_sndctrlpipe(gspca_dev->dev, 0),
			0,			/* request */
			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
			value, index, gspca_dev->usb_buf, 1,
			500);
}

/* 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;

	PDEBUG(D_CONF, "Find Sensor PAC7311");
	reg_w(gspca_dev, 0x78, 0x40); /* Bit_0=start stream, Bit_7=LED */
	reg_w(gspca_dev, 0x78, 0x40); /* Bit_0=start stream, Bit_7=LED */
	reg_w(gspca_dev, 0x78, 0x44); /* Bit_0=start stream, Bit_7=LED */
	reg_w(gspca_dev, 0xff, 0x04);
	reg_w(gspca_dev, 0x27, 0x80);
	reg_w(gspca_dev, 0x28, 0xca);
	reg_w(gspca_dev, 0x29, 0x53);
	reg_w(gspca_dev, 0x2a, 0x0e);
	reg_w(gspca_dev, 0xff, 0x01);
	reg_w(gspca_dev, 0x3e, 0x20);

	cam = &gspca_dev->cam;
	cam->dev_name = (char *) id->driver_info;
	cam->epaddr = 0x05;
	cam->cam_mode = vga_mode;
	cam->nmodes = ARRAY_SIZE(vga_mode);

	sd->brightness = BRIGHTNESS_DEF;
	sd->contrast = CONTRAST_DEF;
	sd->colors = COLOR_DEF;
	sd->autogain = AUTOGAIN_DEF;
	return 0;
}

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

/*jfm: inverted?*/
	brightness = BRIGHTNESS_MAX - sd->brightness;
	reg_w(gspca_dev, 0xff, 0x04);
/*	reg_w(gspca_dev, 0x0e, 0x00); */
	reg_w(gspca_dev, 0x0f, brightness);
	/* load registers to sensor (Bit 0, auto clear) */
	reg_w(gspca_dev, 0x11, 0x01);
	PDEBUG(D_CONF|D_STREAM, "brightness: %i", brightness);
}

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

	reg_w(gspca_dev, 0xff, 0x01);
	reg_w(gspca_dev, 0x80, sd->contrast);
	/* load registers to sensor (Bit 0, auto clear) */
	reg_w(gspca_dev, 0x11, 0x01);
	PDEBUG(D_CONF|D_STREAM, "contrast: %i", sd->contrast);
}

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

	reg_w(gspca_dev, 0xff, 0x01);
	reg_w(gspca_dev, 0x10, sd->colors);
	/* load registers to sensor (Bit 0, auto clear) */
	reg_w(gspca_dev, 0x11, 0x01);
	PDEBUG(D_CONF|D_STREAM, "color: %i", sd->colors);
}

/* this function is called at open time */
static int sd_open(struct gspca_dev *gspca_dev)
{
	reg_w(gspca_dev, 0x78, 0x00);	/* Turn on LED */
	return 0;
}

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

	reg_w(gspca_dev, 0xff, 0x01);
	reg_w_buf(gspca_dev, 0x0002, "\x48\x0a\x40\x08\x00\x00\x08\x00", 8);
	reg_w_buf(gspca_dev, 0x000a, "\x06\xff\x11\xff\x5a\x30\x90\x4c", 8);
	reg_w_buf(gspca_dev, 0x0012, "\x00\x07\x00\x0a\x10\x00\xa0\x10", 8);
	reg_w_buf(gspca_dev, 0x001a, "\x02\x00\x00\x00\x00\x0b\x01\x00", 8);
	reg_w_buf(gspca_dev, 0x0022, "\x00\x00\x00\x00\x00\x00\x00\x00", 8);
	reg_w_buf(gspca_dev, 0x002a, "\x00\x00\x00", 3);
	reg_w_buf(gspca_dev, 0x003e, "\x00\x00\x78\x52\x4a\x52\x78\x6e", 8);
	reg_w_buf(gspca_dev, 0x0046, "\x48\x46\x48\x6e\x5f\x49\x42\x49", 8);
	reg_w_buf(gspca_dev, 0x004e, "\x5f\x5f\x49\x42\x49\x5f\x6e\x48", 8);
	reg_w_buf(gspca_dev, 0x0056, "\x46\x48\x6e\x78\x52\x4a\x52\x78", 8);
	reg_w_buf(gspca_dev, 0x005e, "\x00\x00\x09\x1b\x34\x49\x5c\x9b", 8);
	reg_w_buf(gspca_dev, 0x0066, "\xd0\xff", 2);
	reg_w_buf(gspca_dev, 0x0078, "\x44\x00\xf2\x01\x01\x80", 6);
	reg_w_buf(gspca_dev, 0x007f, "\x2a\x1c\x00\xc8\x02\x58\x03\x84", 8);
	reg_w_buf(gspca_dev, 0x0087, "\x12\x00\x1a\x04\x08\x0c\x10\x14", 8);
	reg_w_buf(gspca_dev, 0x008f, "\x18\x20", 2);
	reg_w_buf(gspca_dev, 0x0096, "\x01\x08\x04", 3);
	reg_w_buf(gspca_dev, 0x00a0, "\x44\x44\x44\x04", 4);
	reg_w_buf(gspca_dev, 0x00f0, "\x01\x00\x00\x00\x22\x00\x20\x00", 8);
	reg_w_buf(gspca_dev, 0x00f8, "\x3f\x00\x0a\x01\x00", 5);

	reg_w(gspca_dev, 0xff, 0x04);
	reg_w(gspca_dev, 0x02, 0x04);
	reg_w(gspca_dev, 0x03, 0x54);
	reg_w(gspca_dev, 0x04, 0x07);
	reg_w(gspca_dev, 0x05, 0x2b);
	reg_w(gspca_dev, 0x06, 0x09);
	reg_w(gspca_dev, 0x07, 0x0f);
	reg_w(gspca_dev, 0x08, 0x09);
	reg_w(gspca_dev, 0x09, 0x00);
	reg_w(gspca_dev, 0x0c, 0x07);
	reg_w(gspca_dev, 0x0d, 0x00);
	reg_w(gspca_dev, 0x0e, 0x00);
	reg_w(gspca_dev, 0x0f, 0x62);
	reg_w(gspca_dev, 0x10, 0x08);
	reg_w(gspca_dev, 0x12, 0x07);
	reg_w(gspca_dev, 0x13, 0x00);
	reg_w(gspca_dev, 0x14, 0x00);
	reg_w(gspca_dev, 0x15, 0x00);
	reg_w(gspca_dev, 0x16, 0x00);
	reg_w(gspca_dev, 0x17, 0x00);
	reg_w(gspca_dev, 0x18, 0x00);
	reg_w(gspca_dev, 0x19, 0x00);
	reg_w(gspca_dev, 0x1a, 0x00);
	reg_w(gspca_dev, 0x1b, 0x03);
	reg_w(gspca_dev, 0x1c, 0xa0);
	reg_w(gspca_dev, 0x1d, 0x01);
	reg_w(gspca_dev, 0x1e, 0xf4);
	reg_w(gspca_dev, 0x21, 0x00);
	reg_w(gspca_dev, 0x22, 0x08);
	reg_w(gspca_dev, 0x24, 0x03);
	reg_w(gspca_dev, 0x26, 0x00);
	reg_w(gspca_dev, 0x27, 0x01);
	reg_w(gspca_dev, 0x28, 0xca);
	reg_w(gspca_dev, 0x29, 0x10);
	reg_w(gspca_dev, 0x2a, 0x06);
	reg_w(gspca_dev, 0x2b, 0x78);
	reg_w(gspca_dev, 0x2c, 0x00);
	reg_w(gspca_dev, 0x2d, 0x00);
	reg_w(gspca_dev, 0x2e, 0x00);
	reg_w(gspca_dev, 0x2f, 0x00);
	reg_w(gspca_dev, 0x30, 0x23);
	reg_w(gspca_dev, 0x31, 0x28);
	reg_w(gspca_dev, 0x32, 0x04);
	reg_w(gspca_dev, 0x33, 0x11);
	reg_w(gspca_dev, 0x34, 0x00);
	reg_w(gspca_dev, 0x35, 0x00);
	reg_w(gspca_dev, 0x11, 0x01);
	setcontrast(gspca_dev);
	setbrightness(gspca_dev);
	setcolors(gspca_dev);

	/* set correct resolution */
	switch (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv) {
	case 2:					/* 160x120 */
		reg_w(gspca_dev, 0xff, 0x04);
		reg_w(gspca_dev, 0x02, 0x03);
		reg_w(gspca_dev, 0xff, 0x01);
		reg_w(gspca_dev, 0x08, 0x09);
		reg_w(gspca_dev, 0x17, 0x20);
		reg_w(gspca_dev, 0x1b, 0x00);
/*		reg_w(gspca_dev, 0x80, 0x69); */
		reg_w(gspca_dev, 0x87, 0x10);
		break;
	case 1:					/* 320x240 */
		reg_w(gspca_dev, 0xff, 0x04);
		reg_w(gspca_dev, 0x02, 0x03);
		reg_w(gspca_dev, 0xff, 0x01);
		reg_w(gspca_dev, 0x08, 0x09);
		reg_w(gspca_dev, 0x17, 0x30);
/*		reg_w(gspca_dev, 0x80, 0x3f); */
		reg_w(gspca_dev, 0x87, 0x11);
		break;
	case 0:					/* 640x480 */
		reg_w(gspca_dev, 0xff, 0x04);
		reg_w(gspca_dev, 0x02, 0x03);
		reg_w(gspca_dev, 0xff, 0x01);
		reg_w(gspca_dev, 0x08, 0x08);
		reg_w(gspca_dev, 0x17, 0x00);
/*		reg_w(gspca_dev, 0x80, 0x1c); */
		reg_w(gspca_dev, 0x87, 0x12);
		break;
	}

	/* start stream */
	reg_w(gspca_dev, 0xff, 0x01);
	reg_w(gspca_dev, 0x78, 0x04);
	reg_w(gspca_dev, 0x78, 0x05);

	if (sd->autogain) {
		sd->ag_cnt = AG_CNT_START;
		sd->avg_lum = 0;
	} else {
		sd->ag_cnt = -1;
	}
}

static void sd_stopN(struct gspca_dev *gspca_dev)
{
	reg_w(gspca_dev, 0xff, 0x04);
	reg_w(gspca_dev, 0x27, 0x80);
	reg_w(gspca_dev, 0x28, 0xca);
	reg_w(gspca_dev, 0x29, 0x53);
	reg_w(gspca_dev, 0x2a, 0x0e);
	reg_w(gspca_dev, 0xff, 0x01);
	reg_w(gspca_dev, 0x3e, 0x20);
	reg_w(gspca_dev, 0x78, 0x04); /* Bit_0=start stream, Bit_7=LED */
	reg_w(gspca_dev, 0x78, 0x44); /* Bit_0=start stream, Bit_7=LED */
	reg_w(gspca_dev, 0x78, 0x44); /* Bit_0=start stream, Bit_7=LED */
}

static void sd_stop0(struct gspca_dev *gspca_dev)
{
}

/* this function is called at close time */
static void sd_close(struct gspca_dev *gspca_dev)
{
	reg_w(gspca_dev, 0xff, 0x04);
	reg_w(gspca_dev, 0x27, 0x80);
	reg_w(gspca_dev, 0x28, 0xca);
	reg_w(gspca_dev, 0x29, 0x53);
	reg_w(gspca_dev, 0x2a, 0x0e);
	reg_w(gspca_dev, 0xff, 0x01);
	reg_w(gspca_dev, 0x3e, 0x20);
	reg_w(gspca_dev, 0x78, 0x04); /* Bit_0=start stream, Bit_7=LED */
	reg_w(gspca_dev, 0x78, 0x44); /* Bit_0=start stream, Bit_7=LED */
	reg_w(gspca_dev, 0x78, 0x44); /* Bit_0=start stream, Bit_7=LED */
}

static void setautogain(struct gspca_dev *gspca_dev, int luma)
{
	int luma_mean = 128;
	int luma_delta = 20;
	__u8 spring = 5;
	int Gbright;

	Gbright = reg_r(gspca_dev, 0x02);
	PDEBUG(D_FRAM, "luma mean %d", luma);
	if (luma < luma_mean - luma_delta ||
	    luma > luma_mean + luma_delta) {
		Gbright += (luma_mean - luma) >> spring;
		if (Gbright > 0x1a)
			Gbright = 0x1a;
		else if (Gbright < 4)
			Gbright = 4;
		PDEBUG(D_FRAM, "gbright %d", Gbright);
		reg_w(gspca_dev, 0xff, 0x04);
		reg_w(gspca_dev, 0x0f, Gbright);
		/* load registers to sensor (Bit 0, auto clear) */
		reg_w(gspca_dev, 0x11, 0x01);
	}
}

static void sd_pkt_scan(struct gspca_dev *gspca_dev,
			struct gspca_frame *frame,	/* target */
			__u8 *data,			/* isoc packet */
			int len)			/* iso packet length */
{
	struct sd *sd = (struct sd *) gspca_dev;
	unsigned char tmpbuf[4];
	int i, p, ffseq;

/*	if (len < 5) { */
	if (len < 6) {
/*		gspca_dev->last_packet_type = DISCARD_PACKET; */
		return;
	}

	ffseq = sd->ffseq;

	for (p = 0; p < len - 6; p++) {
		if ((data[0 + p] == 0xff)
		    && (data[1 + p] == 0xff)
		    && (data[2 + p] == 0x00)
		    && (data[3 + p] == 0xff)
		    && (data[4 + p] == 0x96)) {

			/* start of frame */
			if (sd->ag_cnt >= 0 && p > 28) {
				sd->avg_lum += data[p - 23];
				if (--sd->ag_cnt < 0) {
					sd->ag_cnt = AG_CNT_START;
					setautogain(gspca_dev,
						sd->avg_lum / AG_CNT_START);
					sd->avg_lum = 0;
				}
			}

			/* copy the end of data to the current frame */
			frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame,
						data, p);

			/* put the JPEG header in the new frame */
			gspca_frame_add(gspca_dev, FIRST_PACKET, frame,
					(unsigned char *) pac7311_jpeg_header,
					12);
			tmpbuf[0] = gspca_dev->height >> 8;
			tmpbuf[1] = gspca_dev->height & 0xff;
			tmpbuf[2] = gspca_dev->width >> 8;
			tmpbuf[3] = gspca_dev->width & 0xff;
			gspca_frame_add(gspca_dev, INTER_PACKET, frame,
					tmpbuf, 4);
			gspca_frame_add(gspca_dev, INTER_PACKET, frame,
				(unsigned char *) &pac7311_jpeg_header[16],
				PAC7311_JPEG_HEADER_SIZE - 16);

			data += p + 7;
			len -= p + 7;
			ffseq = 0;
			break;
		}
	}

	/* remove the 'ff ff ff xx' sequences */
	switch (ffseq) {
	case 3:
		data += 1;
		len -= 1;
		break;
	case 2:
		if (data[0] == 0xff) {
			data += 2;
			len -= 2;
			frame->data_end -= 2;
		}
		break;
	case 1:
		if (data[0] == 0xff
		    && data[1] == 0xff) {
			data += 3;
			len -= 3;
			frame->data_end -= 1;
		}
		break;
	}
	for (i = 0; i < len - 4; i++) {
		if (data[i] == 0xff
		    && data[i + 1] == 0xff
		    && data[i + 2] == 0xff) {
			memmove(&data[i], &data[i + 4], len - i - 4);
			len -= 4;
		}
	}
	ffseq = 0;
	if (data[len - 4] == 0xff) {
		if (data[len - 3] == 0xff
		    && data[len - 2] == 0xff) {
			len -= 4;
		}
	} else if (data[len - 3] == 0xff) {
		if (data[len - 2] == 0xff
		    && data[len - 1] == 0xff)
			ffseq = 3;
	} else if (data[len - 2] == 0xff) {
		if (data[len - 1] == 0xff)
			ffseq = 2;
	} else if (data[len - 1] == 0xff)
		ffseq = 1;
	sd->ffseq = ffseq;
	gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
}

static void getbrightness(struct gspca_dev *gspca_dev)
{
/*	sd->brightness = reg_r(gspca_dev, 0x08);
	return sd->brightness;	*/
/*	PDEBUG(D_CONF, "Called pac7311_getbrightness: Not implemented yet"); */
}



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;

	getbrightness(gspca_dev);
	*val = sd->brightness;
	return 0;
}

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;

/*	getcontrast(gspca_dev); */
	*val = sd->contrast;
	return 0;
}

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

	sd->colors = val;
	if (gspca_dev->streaming)
		setcolors(gspca_dev);
	return 0;
}

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

/*	getcolors(gspca_dev); */
	*val = sd->colors;
	return 0;
}

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

	sd->autogain = val;
	if (val) {
		sd->ag_cnt = AG_CNT_START;
		sd->avg_lum = 0;
	} else {
		sd->ag_cnt = -1;
	}
	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;
}

/* sub-driver description */
static struct sd_desc sd_desc = {
	.name = MODULE_NAME,
	.ctrls = sd_ctrls,
	.nctrls = ARRAY_SIZE(sd_ctrls),
	.config = sd_config,
	.open = sd_open,
	.start = sd_start,
	.stopN = sd_stopN,
	.stop0 = sd_stop0,
	.close = sd_close,
	.pkt_scan = sd_pkt_scan,
};

/* -- module initialisation -- */
#define DVNM(name) .driver_info = (kernel_ulong_t) name
static __devinitdata struct usb_device_id device_table[] = {
	{USB_DEVICE(0x093a, 0x2600), DVNM("Typhoon")},
	{USB_DEVICE(0x093a, 0x2601), DVNM("Philips SPC610NC")},
	{USB_DEVICE(0x093a, 0x2603), DVNM("PAC7312")},
	{USB_DEVICE(0x093a, 0x2608), DVNM("Trust WB-3300p")},
	{USB_DEVICE(0x093a, 0x260e), DVNM("Gigaware VGA PC Camera")},
			/* and also ', Trust WB-3350p, SIGMA cam 2350' */
	{USB_DEVICE(0x093a, 0x260f), DVNM("SnakeCam")},
	{USB_DEVICE(0x093a, 0x2621), DVNM("PAC731x")},
	{}
};
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,
};

/* -- module insert / remove -- */
static int __init sd_mod_init(void)
{
	if (usb_register(&sd_driver) < 0)
		return -1;
	PDEBUG(D_PROBE, "v%s registered", version);
	return 0;
}
static void __exit sd_mod_exit(void)
{
	usb_deregister(&sd_driver);
	PDEBUG(D_PROBE, "deregistered");
}

module_init(sd_mod_init);
module_exit(sd_mod_exit);