aboutsummaryrefslogtreecommitdiff
path: root/drivers/media/video/gspca/jeilinj.c
blob: 5ab3f7e12760dcf4c8490fb77d9cdeac46ec9c2e (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
/*
 * Jeilinj subdriver
 *
 * Supports some Jeilin dual-mode cameras which use bulk transport and
 * download raw JPEG data.
 *
 * Copyright (C) 2009 Theodore Kilgore
 *
 * Sportscam DV15 support and control settings are
 * Copyright (C) 2011 Patrice Chotard
 *
 * 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 "jeilinj"

#include <linux/slab.h>
#include "gspca.h"
#include "jpeg.h"

MODULE_AUTHOR("Theodore Kilgore <kilgota@auburn.edu>");
MODULE_DESCRIPTION("GSPCA/JEILINJ USB Camera Driver");
MODULE_LICENSE("GPL");

/* Default timeouts, in ms */
#define JEILINJ_CMD_TIMEOUT 500
#define JEILINJ_CMD_DELAY 160
#define JEILINJ_DATA_TIMEOUT 1000

/* Maximum transfer size to use. */
#define JEILINJ_MAX_TRANSFER 0x200
#define FRAME_HEADER_LEN 0x10
#define FRAME_START 0xFFFFFFFF

enum {
	SAKAR_57379,
	SPORTSCAM_DV15,
};

#define CAMQUALITY_MIN 0	/* highest cam quality */
#define CAMQUALITY_MAX 97	/* lowest cam quality  */

enum e_ctrl {
	LIGHTFREQ,
	AUTOGAIN,
	RED,
	GREEN,
	BLUE,
	NCTRLS		/* number of controls */
};

/* Structure to hold all of our device specific stuff */
struct sd {
	struct gspca_dev gspca_dev;	/* !! must be the first item */
	struct gspca_ctrl ctrls[NCTRLS];
	int blocks_left;
	const struct v4l2_pix_format *cap_mode;
	/* Driver stuff */
	u8 type;
	u8 quality;				 /* image quality */
#define QUALITY_MIN 35
#define QUALITY_MAX 85
#define QUALITY_DEF 85
	u8 jpeg_hdr[JPEG_HDR_SZ];
};

struct jlj_command {
	unsigned char instruction[2];
	unsigned char ack_wanted;
	unsigned char delay;
};

/* AFAICT these cameras will only do 320x240. */
static struct v4l2_pix_format jlj_mode[] = {
	{ 320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
		.bytesperline = 320,
		.sizeimage = 320 * 240,
		.colorspace = V4L2_COLORSPACE_JPEG,
		.priv = 0},
	{ 640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
		.bytesperline = 640,
		.sizeimage = 640 * 480,
		.colorspace = V4L2_COLORSPACE_JPEG,
		.priv = 0}
};

/*
 * cam uses endpoint 0x03 to send commands, 0x84 for read commands,
 * and 0x82 for bulk transfer.
 */

/* All commands are two bytes only */
static void jlj_write2(struct gspca_dev *gspca_dev, unsigned char *command)
{
	int retval;

	if (gspca_dev->usb_err < 0)
		return;
	memcpy(gspca_dev->usb_buf, command, 2);
	retval = usb_bulk_msg(gspca_dev->dev,
			usb_sndbulkpipe(gspca_dev->dev, 3),
			gspca_dev->usb_buf, 2, NULL, 500);
	if (retval < 0) {
		pr_err("command write [%02x] error %d\n",
		       gspca_dev->usb_buf[0], retval);
		gspca_dev->usb_err = retval;
	}
}

/* Responses are one byte only */
static void jlj_read1(struct gspca_dev *gspca_dev, unsigned char response)
{
	int retval;

	if (gspca_dev->usb_err < 0)
		return;
	retval = usb_bulk_msg(gspca_dev->dev,
	usb_rcvbulkpipe(gspca_dev->dev, 0x84),
				gspca_dev->usb_buf, 1, NULL, 500);
	response = gspca_dev->usb_buf[0];
	if (retval < 0) {
		pr_err("read command [%02x] error %d\n",
		       gspca_dev->usb_buf[0], retval);
		gspca_dev->usb_err = retval;
	}
}

static void setfreq(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;
	u8 freq_commands[][2] = {
		{0x71, 0x80},
		{0x70, 0x07}
	};

	freq_commands[0][1] |= (sd->ctrls[LIGHTFREQ].val >> 1);

	jlj_write2(gspca_dev, freq_commands[0]);
	jlj_write2(gspca_dev, freq_commands[1]);
}

static void setcamquality(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;
	u8 quality_commands[][2] = {
		{0x71, 0x1E},
		{0x70, 0x06}
	};
	u8 camquality;

	/* adapt camera quality from jpeg quality */
	camquality = ((QUALITY_MAX - sd->quality) * CAMQUALITY_MAX)
		/ (QUALITY_MAX - QUALITY_MIN);
	quality_commands[0][1] += camquality;

	jlj_write2(gspca_dev, quality_commands[0]);
	jlj_write2(gspca_dev, quality_commands[1]);
}

static void setautogain(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;
	u8 autogain_commands[][2] = {
		{0x94, 0x02},
		{0xcf, 0x00}
	};

	autogain_commands[1][1] = (sd->ctrls[AUTOGAIN].val << 4);

	jlj_write2(gspca_dev, autogain_commands[0]);
	jlj_write2(gspca_dev, autogain_commands[1]);
}

static void setred(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;
	u8 setred_commands[][2] = {
		{0x94, 0x02},
		{0xe6, 0x00}
	};

	setred_commands[1][1] = sd->ctrls[RED].val;

	jlj_write2(gspca_dev, setred_commands[0]);
	jlj_write2(gspca_dev, setred_commands[1]);
}

static void setgreen(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;
	u8 setgreen_commands[][2] = {
		{0x94, 0x02},
		{0xe7, 0x00}
	};

	setgreen_commands[1][1] = sd->ctrls[GREEN].val;

	jlj_write2(gspca_dev, setgreen_commands[0]);
	jlj_write2(gspca_dev, setgreen_commands[1]);
}

static void setblue(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;
	u8 setblue_commands[][2] = {
		{0x94, 0x02},
		{0xe9, 0x00}
	};

	setblue_commands[1][1] = sd->ctrls[BLUE].val;

	jlj_write2(gspca_dev, setblue_commands[0]);
	jlj_write2(gspca_dev, setblue_commands[1]);
}

static const struct ctrl sd_ctrls[NCTRLS] = {
[LIGHTFREQ] = {
	    {
		.id      = V4L2_CID_POWER_LINE_FREQUENCY,
		.type    = V4L2_CTRL_TYPE_MENU,
		.name    = "Light frequency filter",
		.minimum = V4L2_CID_POWER_LINE_FREQUENCY_DISABLED, /* 1 */
		.maximum = V4L2_CID_POWER_LINE_FREQUENCY_60HZ, /* 2 */
		.step    = 1,
		.default_value = V4L2_CID_POWER_LINE_FREQUENCY_60HZ,
	    },
	    .set_control = setfreq
	},
[AUTOGAIN] = {
	    {
		.id = V4L2_CID_AUTOGAIN,
		.type = V4L2_CTRL_TYPE_INTEGER,
		.name = "Automatic Gain (and Exposure)",
		.minimum = 0,
		.maximum = 3,
		.step = 1,
#define AUTOGAIN_DEF 0
		.default_value = AUTOGAIN_DEF,
	   },
	   .set_control = setautogain
	},
[RED] = {
	    {
		.id = V4L2_CID_RED_BALANCE,
		.type = V4L2_CTRL_TYPE_INTEGER,
		.name = "red balance",
		.minimum = 0,
		.maximum = 3,
		.step = 1,
#define RED_BALANCE_DEF 2
		.default_value = RED_BALANCE_DEF,
	   },
	   .set_control = setred
	},

[GREEN]	= {
	    {
		.id = V4L2_CID_GAIN,
		.type = V4L2_CTRL_TYPE_INTEGER,
		.name = "green balance",
		.minimum = 0,
		.maximum = 3,
		.step = 1,
#define GREEN_BALANCE_DEF 2
		.default_value = GREEN_BALANCE_DEF,
	   },
	   .set_control = setgreen
	},
[BLUE] = {
	    {
		.id = V4L2_CID_BLUE_BALANCE,
		.type = V4L2_CTRL_TYPE_INTEGER,
		.name = "blue balance",
		.minimum = 0,
		.maximum = 3,
		.step = 1,
#define BLUE_BALANCE_DEF 2
		.default_value = BLUE_BALANCE_DEF,
	   },
	   .set_control = setblue
	},
};

static int jlj_start(struct gspca_dev *gspca_dev)
{
	int i;
	int start_commands_size;
	u8 response = 0xff;
	struct sd *sd = (struct sd *) gspca_dev;
	struct jlj_command start_commands[] = {
		{{0x71, 0x81}, 0, 0},
		{{0x70, 0x05}, 0, JEILINJ_CMD_DELAY},
		{{0x95, 0x70}, 1, 0},
		{{0x71, 0x81 - gspca_dev->curr_mode}, 0, 0},
		{{0x70, 0x04}, 0, JEILINJ_CMD_DELAY},
		{{0x95, 0x70}, 1, 0},
		{{0x71, 0x00}, 0, 0},   /* start streaming ??*/
		{{0x70, 0x08}, 0, JEILINJ_CMD_DELAY},
		{{0x95, 0x70}, 1, 0},
#define SPORTSCAM_DV15_CMD_SIZE 9
		{{0x94, 0x02}, 0, 0},
		{{0xde, 0x24}, 0, 0},
		{{0x94, 0x02}, 0, 0},
		{{0xdd, 0xf0}, 0, 0},
		{{0x94, 0x02}, 0, 0},
		{{0xe3, 0x2c}, 0, 0},
		{{0x94, 0x02}, 0, 0},
		{{0xe4, 0x00}, 0, 0},
		{{0x94, 0x02}, 0, 0},
		{{0xe5, 0x00}, 0, 0},
		{{0x94, 0x02}, 0, 0},
		{{0xe6, 0x2c}, 0, 0},
		{{0x94, 0x03}, 0, 0},
		{{0xaa, 0x00}, 0, 0}
	};

	sd->blocks_left = 0;
	/* Under Windows, USB spy shows that only the 9 first start
	 * commands are used for SPORTSCAM_DV15 webcam
	 */
	if (sd->type == SPORTSCAM_DV15)
		start_commands_size = SPORTSCAM_DV15_CMD_SIZE;
	else
		start_commands_size = ARRAY_SIZE(start_commands);

	for (i = 0; i < start_commands_size; i++) {
		jlj_write2(gspca_dev, start_commands[i].instruction);
		if (start_commands[i].delay)
			msleep(start_commands[i].delay);
		if (start_commands[i].ack_wanted)
			jlj_read1(gspca_dev, response);
	}
	setcamquality(gspca_dev);
	msleep(2);
	setfreq(gspca_dev);
	if (gspca_dev->usb_err < 0)
		PDEBUG(D_ERR, "Start streaming command failed");
	return gspca_dev->usb_err;
}

static void sd_pkt_scan(struct gspca_dev *gspca_dev,
			u8 *data, int len)
{
	struct sd *sd = (struct sd *) gspca_dev;
	int packet_type;
	u32 header_marker;

	PDEBUG(D_STREAM, "Got %d bytes out of %d for Block 0",
			len, JEILINJ_MAX_TRANSFER);
	if (len != JEILINJ_MAX_TRANSFER) {
		PDEBUG(D_PACK, "bad length");
		goto discard;
	}
	/* check if it's start of frame */
	header_marker = ((u32 *)data)[0];
	if (header_marker == FRAME_START) {
		sd->blocks_left = data[0x0a] - 1;
		PDEBUG(D_STREAM, "blocks_left = 0x%x", sd->blocks_left);
		/* Start a new frame, and add the JPEG header, first thing */
		gspca_frame_add(gspca_dev, FIRST_PACKET,
				sd->jpeg_hdr, JPEG_HDR_SZ);
		/* Toss line 0 of data block 0, keep the rest. */
		gspca_frame_add(gspca_dev, INTER_PACKET,
				data + FRAME_HEADER_LEN,
				JEILINJ_MAX_TRANSFER - FRAME_HEADER_LEN);
	} else if (sd->blocks_left > 0) {
		PDEBUG(D_STREAM, "%d blocks remaining for frame",
				sd->blocks_left);
		sd->blocks_left -= 1;
		if (sd->blocks_left == 0)
			packet_type = LAST_PACKET;
		else
			packet_type = INTER_PACKET;
		gspca_frame_add(gspca_dev, packet_type,
				data, JEILINJ_MAX_TRANSFER);
	} else
		goto discard;
	return;
discard:
	/* Discard data until a new frame starts. */
	gspca_dev->last_packet_type = DISCARD_PACKET;
}

/* This function is called at probe time just before sd_init */
static int sd_config(struct gspca_dev *gspca_dev,
		const struct usb_device_id *id)
{
	struct cam *cam = &gspca_dev->cam;
	struct sd *dev  = (struct sd *) gspca_dev;

	dev->type = id->driver_info;
	gspca_dev->cam.ctrls = dev->ctrls;
	dev->quality = QUALITY_DEF;

	cam->cam_mode = jlj_mode;
	cam->nmodes = ARRAY_SIZE(jlj_mode);
	cam->bulk = 1;
	cam->bulk_nurbs = 1;
	cam->bulk_size = JEILINJ_MAX_TRANSFER;
	return 0;
}

static void sd_stopN(struct gspca_dev *gspca_dev)
{
	int i;
	u8 *buf;
	static u8 stop_commands[][2] = {
		{0x71, 0x00},
		{0x70, 0x09},
		{0x71, 0x80},
		{0x70, 0x05}
	};

	for (;;) {
		/* get the image remaining blocks */
		usb_bulk_msg(gspca_dev->dev,
				gspca_dev->urb[0]->pipe,
				gspca_dev->urb[0]->transfer_buffer,
				JEILINJ_MAX_TRANSFER, NULL,
				JEILINJ_DATA_TIMEOUT);

		/* search for 0xff 0xd9  (EOF for JPEG) */
		i = 0;
		buf = gspca_dev->urb[0]->transfer_buffer;
		while ((i < (JEILINJ_MAX_TRANSFER - 1)) &&
			((buf[i] != 0xff) || (buf[i+1] != 0xd9)))
			i++;

		if (i != (JEILINJ_MAX_TRANSFER - 1))
			/* last remaining block found */
			break;
		}

	for (i = 0; i < ARRAY_SIZE(stop_commands); i++)
		jlj_write2(gspca_dev, stop_commands[i]);
}

/* this function is called at probe and resume time */
static int sd_init(struct gspca_dev *gspca_dev)
{
	return gspca_dev->usb_err;
}

/* Set up for getting frames. */
static int sd_start(struct gspca_dev *gspca_dev)
{
	struct sd *dev = (struct sd *) gspca_dev;

	/* create the JPEG header */
	jpeg_define(dev->jpeg_hdr, gspca_dev->height, gspca_dev->width,
			0x21);          /* JPEG 422 */
	jpeg_set_qual(dev->jpeg_hdr, dev->quality);
	PDEBUG(D_STREAM, "Start streaming at %dx%d",
		gspca_dev->height, gspca_dev->width);
	jlj_start(gspca_dev);
	return gspca_dev->usb_err;
}

/* Table of supported USB devices */
static const struct usb_device_id device_table[] = {
	{USB_DEVICE(0x0979, 0x0280), .driver_info = SAKAR_57379},
	{USB_DEVICE(0x0979, 0x0270), .driver_info = SPORTSCAM_DV15},
	{}
};

MODULE_DEVICE_TABLE(usb, device_table);

static int sd_querymenu(struct gspca_dev *gspca_dev,
			struct v4l2_querymenu *menu)
{
	switch (menu->id) {
	case V4L2_CID_POWER_LINE_FREQUENCY:
		switch (menu->index) {
		case 0:	/* V4L2_CID_POWER_LINE_FREQUENCY_DISABLED */
			strcpy((char *) menu->name, "disable");
			return 0;
		case 1:	/* V4L2_CID_POWER_LINE_FREQUENCY_50HZ */
			strcpy((char *) menu->name, "50 Hz");
			return 0;
		case 2:	/* V4L2_CID_POWER_LINE_FREQUENCY_60HZ */
			strcpy((char *) menu->name, "60 Hz");
			return 0;
		}
		break;
	}
	return -EINVAL;
}

static int sd_set_jcomp(struct gspca_dev *gspca_dev,
			struct v4l2_jpegcompression *jcomp)
{
	struct sd *sd = (struct sd *) gspca_dev;

	if (jcomp->quality < QUALITY_MIN)
		sd->quality = QUALITY_MIN;
	else if (jcomp->quality > QUALITY_MAX)
		sd->quality = QUALITY_MAX;
	else
		sd->quality = jcomp->quality;
	if (gspca_dev->streaming) {
		jpeg_set_qual(sd->jpeg_hdr, sd->quality);
		setcamquality(gspca_dev);
	}
	return 0;
}

static int sd_get_jcomp(struct gspca_dev *gspca_dev,
			struct v4l2_jpegcompression *jcomp)
{
	struct sd *sd = (struct sd *) gspca_dev;

	memset(jcomp, 0, sizeof *jcomp);
	jcomp->quality = sd->quality;
	jcomp->jpeg_markers = V4L2_JPEG_MARKER_DHT
			| V4L2_JPEG_MARKER_DQT;
	return 0;
}


/* sub-driver description */
static const struct sd_desc sd_desc_sakar_57379 = {
	.name   = MODULE_NAME,
	.config = sd_config,
	.init   = sd_init,
	.start  = sd_start,
	.stopN  = sd_stopN,
	.pkt_scan = sd_pkt_scan,
};

/* sub-driver description */
static const struct sd_desc sd_desc_sportscam_dv15 = {
	.name   = MODULE_NAME,
	.config = sd_config,
	.init   = sd_init,
	.start  = sd_start,
	.stopN  = sd_stopN,
	.pkt_scan = sd_pkt_scan,
	.ctrls = sd_ctrls,
	.nctrls = ARRAY_SIZE(sd_ctrls),
	.querymenu = sd_querymenu,
	.get_jcomp = sd_get_jcomp,
	.set_jcomp = sd_set_jcomp,
};

static const struct sd_desc *sd_desc[2] = {
	&sd_desc_sakar_57379,
	&sd_desc_sportscam_dv15
};

/* -- 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);