aboutsummaryrefslogtreecommitdiff
path: root/drivers/media/video/gspca/mr97310a.c
blob: 2a901a4a6f0039c54f607073b67282ffc7409874 (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
/*
 * Mars MR97310A library
 *
 * Copyright (C) 2009 Kyle Guinn <elyk03@gmail.com>
 *
 * 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 "mr97310a"

#include "gspca.h"

MODULE_AUTHOR("Kyle Guinn <elyk03@gmail.com>");
MODULE_DESCRIPTION("GSPCA/Mars-Semi MR97310A USB Camera Driver");
MODULE_LICENSE("GPL");

/* specific webcam descriptor */
struct sd {
	struct gspca_dev gspca_dev;  /* !! must be the first item */
	u8 sof_read;
};

/* V4L2 controls supported by the driver */
static struct ctrl sd_ctrls[] = {
};

static const struct v4l2_pix_format vga_mode[] = {
	{160, 120, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
		.bytesperline = 160,
		.sizeimage = 160 * 120,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 4},
	{176, 144, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
		.bytesperline = 176,
		.sizeimage = 176 * 144,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 3},
	{320, 240, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
		.bytesperline = 320,
		.sizeimage = 320 * 240,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 2},
	{352, 288, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
		.bytesperline = 352,
		.sizeimage = 352 * 288,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 1},
	{640, 480, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
		.bytesperline = 640,
		.sizeimage = 640 * 480,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 0},
};

/* the bytes to write are in gspca_dev->usb_buf */
static int reg_w(struct gspca_dev *gspca_dev, int len)
{
	int rc;

	rc = usb_bulk_msg(gspca_dev->dev,
			  usb_sndbulkpipe(gspca_dev->dev, 4),
			  gspca_dev->usb_buf, len, NULL, 500);
	if (rc < 0)
		PDEBUG(D_ERR, "reg write [%02x] error %d",
		       gspca_dev->usb_buf[0], rc);
	return rc;
}

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

	cam = &gspca_dev->cam;
	cam->cam_mode = vga_mode;
	cam->nmodes = ARRAY_SIZE(vga_mode);
	return 0;
}

/* this function is called at probe and resume time */
static int sd_init(struct gspca_dev *gspca_dev)
{
	return 0;
}

static int sd_start(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;
	__u8 *data = gspca_dev->usb_buf;
	int err_code;

	sd->sof_read = 0;

	/* Note:  register descriptions guessed from MR97113A driver */

	data[0] = 0x01;
	data[1] = 0x01;
	err_code = reg_w(gspca_dev, 2);
	if (err_code < 0)
		return err_code;

	data[0] = 0x00;
	data[1] = 0x0d;
	data[2] = 0x01;
	data[5] = 0x2b;
	data[7] = 0x00;
	data[9] = 0x50;  /* reg 8, no scale down */
	data[10] = 0xc0;

	switch (gspca_dev->width) {
	case 160:
		data[9] |= 0x0c;  /* reg 8, 4:1 scale down */
		/* fall thru */
	case 320:
		data[9] |= 0x04;  /* reg 8, 2:1 scale down */
		/* fall thru */
	case 640:
	default:
		data[3] = 0x50;  /* reg 2, H size */
		data[4] = 0x78;  /* reg 3, V size */
		data[6] = 0x04;  /* reg 5, H start */
		data[8] = 0x03;  /* reg 7, V start */
		break;

	case 176:
		data[9] |= 0x04;  /* reg 8, 2:1 scale down */
		/* fall thru */
	case 352:
		data[3] = 0x2c;  /* reg 2, H size */
		data[4] = 0x48;  /* reg 3, V size */
		data[6] = 0x94;  /* reg 5, H start */
		data[8] = 0x63;  /* reg 7, V start */
		break;
	}

	err_code = reg_w(gspca_dev, 11);
	if (err_code < 0)
		return err_code;

	data[0] = 0x0a;
	data[1] = 0x80;
	err_code = reg_w(gspca_dev, 2);
	if (err_code < 0)
		return err_code;

	data[0] = 0x14;
	data[1] = 0x0a;
	err_code = reg_w(gspca_dev, 2);
	if (err_code < 0)
		return err_code;

	data[0] = 0x1b;
	data[1] = 0x00;
	err_code = reg_w(gspca_dev, 2);
	if (err_code < 0)
		return err_code;

	data[0] = 0x15;
	data[1] = 0x16;
	err_code = reg_w(gspca_dev, 2);
	if (err_code < 0)
		return err_code;

	data[0] = 0x16;
	data[1] = 0x10;
	err_code = reg_w(gspca_dev, 2);
	if (err_code < 0)
		return err_code;

	data[0] = 0x17;
	data[1] = 0x3a;
	err_code = reg_w(gspca_dev, 2);
	if (err_code < 0)
		return err_code;

	data[0] = 0x18;
	data[1] = 0x68;
	err_code = reg_w(gspca_dev, 2);
	if (err_code < 0)
		return err_code;

	data[0] = 0x1f;
	data[1] = 0x00;
	data[2] = 0x02;
	data[3] = 0x06;
	data[4] = 0x59;
	data[5] = 0x0c;
	data[6] = 0x16;
	data[7] = 0x00;
	data[8] = 0x07;
	data[9] = 0x00;
	data[10] = 0x01;
	err_code = reg_w(gspca_dev, 11);
	if (err_code < 0)
		return err_code;

	data[0] = 0x1f;
	data[1] = 0x04;
	data[2] = 0x11;
	data[3] = 0x01;
	err_code = reg_w(gspca_dev, 4);
	if (err_code < 0)
		return err_code;

	data[0] = 0x1f;
	data[1] = 0x00;
	data[2] = 0x0a;
	data[3] = 0x00;
	data[4] = 0x01;
	data[5] = 0x00;
	data[6] = 0x00;
	data[7] = 0x01;
	data[8] = 0x00;
	data[9] = 0x0a;
	err_code = reg_w(gspca_dev, 10);
	if (err_code < 0)
		return err_code;

	data[0] = 0x1f;
	data[1] = 0x04;
	data[2] = 0x11;
	data[3] = 0x01;
	err_code = reg_w(gspca_dev, 4);
	if (err_code < 0)
		return err_code;

	data[0] = 0x1f;
	data[1] = 0x00;
	data[2] = 0x12;
	data[3] = 0x00;
	data[4] = 0x63;
	data[5] = 0x00;
	data[6] = 0x70;
	data[7] = 0x00;
	data[8] = 0x00;
	err_code = reg_w(gspca_dev, 9);
	if (err_code < 0)
		return err_code;

	data[0] = 0x1f;
	data[1] = 0x04;
	data[2] = 0x11;
	data[3] = 0x01;
	err_code = reg_w(gspca_dev, 4);
	if (err_code < 0)
		return err_code;

	data[0] = 0x00;
	data[1] = 0x4d;  /* ISOC transfering enable... */
	err_code = reg_w(gspca_dev, 2);
	return err_code;
}

static void sd_stopN(struct gspca_dev *gspca_dev)
{
	int result;

	gspca_dev->usb_buf[0] = 1;
	gspca_dev->usb_buf[1] = 0;
	result = reg_w(gspca_dev, 2);
	if (result < 0)
		PDEBUG(D_ERR, "Camera Stop failed");
}

/* Include pac common sof detection functions */
#include "pac_common.h"

static void sd_pkt_scan(struct gspca_dev *gspca_dev,
			struct gspca_frame *frame,    /* target */
			__u8 *data,                   /* isoc packet */
			int len)                      /* iso packet length */
{
	unsigned char *sof;

	sof = pac_find_sof(gspca_dev, data, len);
	if (sof) {
		int n;

		/* finish decoding current frame */
		n = sof - data;
		if (n > sizeof pac_sof_marker)
			n -= sizeof pac_sof_marker;
		else
			n = 0;
		frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame,
					data, n);
		/* Start next frame. */
		gspca_frame_add(gspca_dev, FIRST_PACKET, frame,
			pac_sof_marker, sizeof pac_sof_marker);
		len -= sof - data;
		data = sof;
	}
	gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
}

/* 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,
	.start = sd_start,
	.stopN = sd_stopN,
	.pkt_scan = sd_pkt_scan,
};

/* -- module initialisation -- */
static const __devinitdata struct usb_device_id device_table[] = {
	{USB_DEVICE(0x08ca, 0x0111)},
	{}
};
MODULE_DEVICE_TABLE(usb, device_table);

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

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

/* -- module insert / remove -- */
static int __init sd_mod_init(void)
{
	if (usb_register(&sd_driver) < 0)
		return -1;
	PDEBUG(D_PROBE, "registered");
	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);