summaryrefslogtreecommitdiffstats
path: root/drivers/media/video/gspca/spca1528.c
blob: e643386644107a9dabcf1c63a393826e0d6fb5dd (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
/*
 * spca1528 subdriver
 *
 * Copyright (C) 2010 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 "spca1528"

#include "gspca.h"
#include "jpeg.h"

MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>");
MODULE_DESCRIPTION("SPCA1528 USB Camera Driver");
MODULE_LICENSE("GPL");

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

	u8 brightness;
	u8 contrast;
	u8 hue;
	u8 color;
	u8 sharpness;

	u8 pkt_seq;

	u8 jpeg_hdr[JPEG_HDR_SZ];
};

/* 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_sethue(struct gspca_dev *gspca_dev, __s32 val);
static int sd_gethue(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setcolor(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getcolor(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setsharpness(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getsharpness(struct gspca_dev *gspca_dev, __s32 *val);

static const struct ctrl sd_ctrls[] = {
	{
	    {
		.id      = V4L2_CID_BRIGHTNESS,
		.type    = V4L2_CTRL_TYPE_INTEGER,
		.name    = "Brightness",
		.minimum = 0,
		.maximum = 255,
		.step    = 1,
#define BRIGHTNESS_DEF 128
		.default_value = BRIGHTNESS_DEF,
	    },
	    .set = sd_setbrightness,
	    .get = sd_getbrightness,
	},
	{
	    {
		.id      = V4L2_CID_CONTRAST,
		.type    = V4L2_CTRL_TYPE_INTEGER,
		.name    = "Contrast",
		.minimum = 0,
		.maximum = 8,
		.step    = 1,
#define CONTRAST_DEF 1
		.default_value = CONTRAST_DEF,
	    },
	    .set = sd_setcontrast,
	    .get = sd_getcontrast,
	},
	{
	    {
		.id      = V4L2_CID_HUE,
		.type    = V4L2_CTRL_TYPE_INTEGER,
		.name    = "Hue",
		.minimum = 0,
		.maximum = 255,
		.step    = 1,
#define HUE_DEF 0
		.default_value = HUE_DEF,
	    },
	    .set = sd_sethue,
	    .get = sd_gethue,
	},
	{
	    {
		.id      = V4L2_CID_SATURATION,
		.type    = V4L2_CTRL_TYPE_INTEGER,
		.name    = "Saturation",
		.minimum = 0,
		.maximum = 8,
		.step    = 1,
#define COLOR_DEF 1
		.default_value = COLOR_DEF,
	    },
	    .set = sd_setcolor,
	    .get = sd_getcolor,
	},
	{
	    {
		.id	 = V4L2_CID_SHARPNESS,
		.type    = V4L2_CTRL_TYPE_INTEGER,
		.name    = "Sharpness",
		.minimum = 0,
		.maximum = 255,
		.step    = 1,
#define SHARPNESS_DEF 0
		.default_value = SHARPNESS_DEF,
	    },
	    .set = sd_setsharpness,
	    .get = sd_getsharpness,
	},
};

static const struct v4l2_pix_format vga_mode[] = {
/*		(does not work correctly)
	{176, 144, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
		.bytesperline = 176,
		.sizeimage = 176 * 144 * 5 / 8 + 590,
		.colorspace = V4L2_COLORSPACE_JPEG,
		.priv = 3},
*/
	{320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
		.bytesperline = 320,
		.sizeimage = 320 * 240 * 4 / 8 + 590,
		.colorspace = V4L2_COLORSPACE_JPEG,
		.priv = 2},
	{640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
		.bytesperline = 640,
		.sizeimage = 640 * 480 * 3 / 8 + 590,
		.colorspace = V4L2_COLORSPACE_JPEG,
		.priv = 1},
};

/* read <len> bytes to gspca usb_buf */
static void reg_r(struct gspca_dev *gspca_dev,
			u8 req,
			u16 index,
			int len)
{
#if USB_BUF_SZ < 64
#error "USB buffer too small"
#endif
	struct usb_device *dev = gspca_dev->dev;
	int ret;

	if (gspca_dev->usb_err < 0)
		return;
	ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
			req,
			USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
			0x0000,			/* value */
			index,
			gspca_dev->usb_buf, len,
			500);
	PDEBUG(D_USBI, "GET %02x 0000 %04x %02x", req, index,
			 gspca_dev->usb_buf[0]);
	if (ret < 0) {
		err("reg_r err %d", ret);
		gspca_dev->usb_err = ret;
	}
}

static void reg_w(struct gspca_dev *gspca_dev,
			u8 req,
			u16 value,
			u16 index)
{
	struct usb_device *dev = gspca_dev->dev;
	int ret;

	if (gspca_dev->usb_err < 0)
		return;
	PDEBUG(D_USBO, "SET %02x %04x %04x", req, value, index);
	ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
			req,
			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
			value, index,
			NULL, 0, 500);
	if (ret < 0) {
		err("reg_w err %d", ret);
		gspca_dev->usb_err = ret;
	}
}

static void reg_wb(struct gspca_dev *gspca_dev,
			u8 req,
			u16 value,
			u16 index,
			u8 byte)
{
	struct usb_device *dev = gspca_dev->dev;
	int ret;

	if (gspca_dev->usb_err < 0)
		return;
	PDEBUG(D_USBO, "SET %02x %04x %04x %02x", req, value, index, byte);
	gspca_dev->usb_buf[0] = byte;
	ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
			req,
			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
			value, index,
			gspca_dev->usb_buf, 1, 500);
	if (ret < 0) {
		err("reg_w err %d", ret);
		gspca_dev->usb_err = ret;
	}
}

static void wait_status_0(struct gspca_dev *gspca_dev)
{
	int i;

	i = 20;
	do {
		reg_r(gspca_dev, 0x21, 0x0000, 1);
		if (gspca_dev->usb_buf[0] == 0)
			return;
		msleep(30);
	} while (--i > 0);
	PDEBUG(D_ERR, "wait_status_0 timeout");
	gspca_dev->usb_err = -ETIME;
}

static void wait_status_1(struct gspca_dev *gspca_dev)
{
	int i;

	i = 10;
	do {
		reg_r(gspca_dev, 0x21, 0x0001, 1);
		msleep(10);
		if (gspca_dev->usb_buf[0] == 1) {
			reg_wb(gspca_dev, 0x21, 0x0000, 0x0001, 0x00);
			reg_r(gspca_dev, 0x21, 0x0001, 1);
			return;
		}
	} while (--i > 0);
	PDEBUG(D_ERR, "wait_status_1 timeout");
	gspca_dev->usb_err = -ETIME;
}

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

	reg_wb(gspca_dev, 0xc0, 0x0000, 0x00c0, sd->brightness);
}

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

	reg_wb(gspca_dev, 0xc1, 0x0000, 0x00c1, sd->contrast);
}

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

	reg_wb(gspca_dev, 0xc2, 0x0000, 0x0000, sd->hue);
}

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

	reg_wb(gspca_dev, 0xc3, 0x0000, 0x00c3, sd->color);
}

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

	reg_wb(gspca_dev, 0xc4, 0x0000, 0x00c4, sd->sharpness);
}

/* 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;

	gspca_dev->cam.cam_mode = vga_mode;
	gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode);
	gspca_dev->cam.npkt = 128; /* number of packets per ISOC message */
			/*fixme: 256 in ms-win traces*/

	sd->brightness = BRIGHTNESS_DEF;
	sd->contrast = CONTRAST_DEF;
	sd->hue = HUE_DEF;
	sd->color = COLOR_DEF;
	sd->sharpness = SHARPNESS_DEF;

	gspca_dev->nbalt = 4;		/* use alternate setting 3 */

	return 0;
}

/* this function is called at probe and resume time */
static int sd_init(struct gspca_dev *gspca_dev)
{
	reg_w(gspca_dev, 0x00, 0x0001, 0x2067);
	reg_w(gspca_dev, 0x00, 0x00d0, 0x206b);
	reg_w(gspca_dev, 0x00, 0x0000, 0x206c);
	reg_w(gspca_dev, 0x00, 0x0001, 0x2069);
	msleep(8);
	reg_w(gspca_dev, 0x00, 0x00c0, 0x206b);
	reg_w(gspca_dev, 0x00, 0x0000, 0x206c);
	reg_w(gspca_dev, 0x00, 0x0001, 0x2069);

	reg_r(gspca_dev, 0x20, 0x0000, 1);
	reg_r(gspca_dev, 0x20, 0x0000, 5);
	reg_r(gspca_dev, 0x23, 0x0000, 64);
	PDEBUG(D_PROBE, "%s%s", &gspca_dev->usb_buf[0x1c],
				&gspca_dev->usb_buf[0x30]);
	reg_r(gspca_dev, 0x23, 0x0001, 64);
	return gspca_dev->usb_err;
}

/* function called at start time before URB creation */
static int sd_isoc_init(struct gspca_dev *gspca_dev)
{
	u8 mode;

	reg_r(gspca_dev, 0x00, 0x2520, 1);
	wait_status_0(gspca_dev);
	reg_w(gspca_dev, 0xc5, 0x0003, 0x0000);
	wait_status_1(gspca_dev);

	wait_status_0(gspca_dev);
	mode = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv;
	reg_wb(gspca_dev, 0x25, 0x0000, 0x0004, mode);
	reg_r(gspca_dev, 0x25, 0x0004, 1);
	reg_wb(gspca_dev, 0x27, 0x0000, 0x0000, 0x06);
	reg_r(gspca_dev, 0x27, 0x0000, 1);
	return gspca_dev->usb_err;
}

/* -- start the camera -- */
static int sd_start(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;

	/* initialize the JPEG header */
	jpeg_define(sd->jpeg_hdr, gspca_dev->height, gspca_dev->width,
			0x22);		/* JPEG 411 */

	/* the JPEG quality seems to be 82% */
	jpeg_set_qual(sd->jpeg_hdr, 82);

	/* set the controls */
	setbrightness(gspca_dev);
	setcontrast(gspca_dev);
	sethue(gspca_dev);
	setcolor(gspca_dev);
	setsharpness(gspca_dev);

	msleep(5);
	reg_r(gspca_dev, 0x00, 0x2520, 1);
	msleep(8);

	/* start the capture */
	wait_status_0(gspca_dev);
	reg_w(gspca_dev, 0x31, 0x0000, 0x0004);
	wait_status_1(gspca_dev);
	wait_status_0(gspca_dev);
	msleep(200);

	sd->pkt_seq = 0;
	return gspca_dev->usb_err;
}

static void sd_stopN(struct gspca_dev *gspca_dev)
{
	/* stop the capture */
	wait_status_0(gspca_dev);
	reg_w(gspca_dev, 0x31, 0x0000, 0x0000);
	wait_status_1(gspca_dev);
	wait_status_0(gspca_dev);
}

/* move a packet adding 0x00 after 0xff */
static void add_packet(struct gspca_dev *gspca_dev,
			u8 *data,
			int len)
{
	int i;

	i = 0;
	do {
		if (data[i] == 0xff) {
			gspca_frame_add(gspca_dev, INTER_PACKET,
					data, i + 1);
			len -= i;
			data += i;
			*data = 0x00;
			i = 0;
		}
	} while (++i < len);
	gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
}

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;
	static const u8 ffd9[] = {0xff, 0xd9};

	/* image packets start with:
	 *	02 8n
	 * with <n> bit:
	 *	0x01: even (0) / odd (1) image
	 *	0x02: end of image when set
	 */
	if (len < 3)
		return;				/* empty packet */
	if (*data == 0x02) {
		if (data[1] & 0x02) {
			sd->pkt_seq = !(data[1] & 1);
			add_packet(gspca_dev, data + 2, len - 2);
			gspca_frame_add(gspca_dev, LAST_PACKET,
					ffd9, 2);
			return;
		}
		if ((data[1] & 1) != sd->pkt_seq)
			goto err;
		if (gspca_dev->last_packet_type == LAST_PACKET)
			gspca_frame_add(gspca_dev, FIRST_PACKET,
					sd->jpeg_hdr, JPEG_HDR_SZ);
		add_packet(gspca_dev, data + 2, len - 2);
		return;
	}
err:
	gspca_dev->last_packet_type = DISCARD_PACKET;
}

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 gspca_dev->usb_err;
}

static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) 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 gspca_dev->usb_err;
}

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_sethue(struct gspca_dev *gspca_dev, __s32 val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	sd->hue = val;
	if (gspca_dev->streaming)
		sethue(gspca_dev);
	return gspca_dev->usb_err;
}

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

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

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

	sd->color = val;
	if (gspca_dev->streaming)
		setcolor(gspca_dev);
	return gspca_dev->usb_err;
}

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

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

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

	sd->sharpness = val;
	if (gspca_dev->streaming)
		setsharpness(gspca_dev);
	return gspca_dev->usb_err;
}

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

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

/* sub-driver description */
static const struct sd_desc sd_desc = {
	.name = MODULE_NAME,
	.ctrls = sd_ctrls,
	.nctrls = ARRAY_SIZE(sd_ctrls),
	.config = sd_config,
	.init = sd_init,
	.isoc_init = sd_isoc_init,
	.start = sd_start,
	.stopN = sd_stopN,
	.pkt_scan = sd_pkt_scan,
};

/* -- module initialisation -- */
static const __devinitdata struct usb_device_id device_table[] = {
	{USB_DEVICE(0x04fc, 0x1528)},
	{}
};
MODULE_DEVICE_TABLE(usb, device_table);

/* -- device connect -- */
static int sd_probe(struct usb_interface *intf,
			const struct usb_device_id *id)
{
	/* the video interface for isochronous transfer is 1 */
	if (intf->cur_altsetting->desc.bInterfaceNumber != 1)
		return -ENODEV;

	return gspca_dev_probe2(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,
#endif
};

/* -- module insert / remove -- */
static int __init sd_mod_init(void)
{
	return usb_register(&sd_driver);
}
static void __exit sd_mod_exit(void)
{
	usb_deregister(&sd_driver);
}

module_init(sd_mod_init);
module_exit(sd_mod_exit);
OpenPOWER on IntegriCloud