summaryrefslogtreecommitdiff
path: root/drivers/media/video/gspca/stv06xx/stv06xx_st6422.c
blob: ea677b5d071e26bd5c50a2793b099d9be759d4a3 (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
/*
 * Support for the sensor part which is integrated (I think) into the
 * st6422 stv06xx alike bridge, as its integrated there are no i2c writes
 * but instead direct bridge writes.
 *
 * Copyright (c) 2009 Hans de Goede <hdegoede@redhat.com>
 *
 * Strongly based on qc-usb-messenger, which is:
 * Copyright (c) 2001 Jean-Fredric Clere, Nikolas Zimmermann, Georg Acher
 *		      Mark Cave-Ayland, Carlo E Prelz, Dick Streefland
 * Copyright (c) 2002, 2003 Tuukka Toivonen
 *
 * 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
 * (at your option) 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
 *
 */

#include "stv06xx_st6422.h"

static struct v4l2_pix_format st6422_mode[] = {
	/* Note we actually get 124 lines of data, of which we skip the 4st
	   4 as they are garbage */
	{
		162,
		120,
		V4L2_PIX_FMT_SGRBG8,
		V4L2_FIELD_NONE,
		.sizeimage = 162 * 120,
		.bytesperline = 162,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 1
	},
	/* Note we actually get 248 lines of data, of which we skip the 4st
	   4 as they are garbage, and we tell the app it only gets the
	   first 240 of the 244 lines it actually gets, so that it ignores
	   the last 4. */
	{
		324,
		240,
		V4L2_PIX_FMT_SGRBG8,
		V4L2_FIELD_NONE,
		.sizeimage = 324 * 244,
		.bytesperline = 324,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 0
	},
};

static const struct ctrl st6422_ctrl[] = {
#define BRIGHTNESS_IDX 0
	{
		{
			.id		= V4L2_CID_BRIGHTNESS,
			.type		= V4L2_CTRL_TYPE_INTEGER,
			.name		= "Brightness",
			.minimum	= 0,
			.maximum	= 31,
			.step		= 1,
			.default_value  = 3
		},
		.set = st6422_set_brightness,
		.get = st6422_get_brightness
	},
#define CONTRAST_IDX 1
	{
		{
			.id		= V4L2_CID_CONTRAST,
			.type		= V4L2_CTRL_TYPE_INTEGER,
			.name		= "Contrast",
			.minimum	= 0,
			.maximum	= 15,
			.step		= 1,
			.default_value  = 11
		},
		.set = st6422_set_contrast,
		.get = st6422_get_contrast
	},
#define GAIN_IDX 2
	{
		{
			.id		= V4L2_CID_GAIN,
			.type		= V4L2_CTRL_TYPE_INTEGER,
			.name		= "Gain",
			.minimum	= 0,
			.maximum	= 255,
			.step		= 1,
			.default_value  = 64
		},
		.set = st6422_set_gain,
		.get = st6422_get_gain
	},
#define EXPOSURE_IDX 3
	{
		{
			.id		= V4L2_CID_EXPOSURE,
			.type		= V4L2_CTRL_TYPE_INTEGER,
			.name		= "Exposure",
			.minimum	= 0,
			.maximum	= 1023,
			.step		= 1,
			.default_value  = 256
		},
		.set = st6422_set_exposure,
		.get = st6422_get_exposure
	},
};

static int st6422_probe(struct sd *sd)
{
	int i;
	s32 *sensor_settings;

	if (sd->bridge != BRIDGE_ST6422)
		return -ENODEV;

	info("st6422 sensor detected");

	sensor_settings = kmalloc(ARRAY_SIZE(st6422_ctrl) * sizeof(s32),
				  GFP_KERNEL);
	if (!sensor_settings)
		return -ENOMEM;

	sd->gspca_dev.cam.cam_mode = st6422_mode;
	sd->gspca_dev.cam.nmodes = ARRAY_SIZE(st6422_mode);
	sd->desc.ctrls = st6422_ctrl;
	sd->desc.nctrls = ARRAY_SIZE(st6422_ctrl);
	sd->sensor_priv = sensor_settings;

	for (i = 0; i < sd->desc.nctrls; i++)
		sensor_settings[i] = st6422_ctrl[i].qctrl.default_value;

	return 0;
}

static int st6422_init(struct sd *sd)
{
	int err = 0, i;

	const u16 st6422_bridge_init[][2] = {
		{ STV_ISO_ENABLE, 0x00 }, /* disable capture */
		{ 0x1436, 0x00 },
		{ 0x1432, 0x03 },	/* 0x00-0x1F brightness */
		{ 0x143a, 0xf9 },	/* 0x00-0x0F contrast */
		{ 0x0509, 0x38 },	/* R */
		{ 0x050a, 0x38 },	/* G */
		{ 0x050b, 0x38 },	/* B */
		{ 0x050c, 0x2a },
		{ 0x050d, 0x01 },


		{ 0x1431, 0x00 },	/* 0x00-0x07 ??? */
		{ 0x1433, 0x34 },	/* 160x120, 0x00-0x01 night filter */
		{ 0x1438, 0x18 },	/* 640x480 */
/* 18 bayes */
/* 10 compressed? */

		{ 0x1439, 0x00 },
/* anti-noise?  0xa2 gives a perfect image */

		{ 0x143b, 0x05 },
		{ 0x143c, 0x00 },	/* 0x00-0x01 - ??? */


/* shutter time 0x0000-0x03FF */
/* low value  give good picures on moving objects (but requires much light) */
/* high value gives good picures in darkness (but tends to be overexposed) */
		{ 0x143e, 0x01 },
		{ 0x143d, 0x00 },

		{ 0x1442, 0xe2 },
/* write: 1x1x xxxx */
/* read:  1x1x xxxx */
/*        bit 5 == button pressed and hold if 0 */
/* write 0xe2,0xea */

/* 0x144a */
/* 0x00 init */
/* bit 7 == button has been pressed, but not handled */

/* interrupt */
/* if(urb->iso_frame_desc[i].status == 0x80) { */
/* if(urb->iso_frame_desc[i].status == 0x88) { */

		{ 0x1500, 0xd0 },
		{ 0x1500, 0xd0 },
		{ 0x1500, 0x50 },	/* 0x00 - 0xFF  0x80 == compr ? */

		{ 0x1501, 0xaf },
/* high val-> light area gets darker */
/* low val -> light area gets lighter */
		{ 0x1502, 0xc2 },
/* high val-> light area gets darker */
/* low val -> light area gets lighter */
		{ 0x1503, 0x45 },
/* high val-> light area gets darker */
/* low val -> light area gets lighter */
		{ 0x1505, 0x02 },
/* 2  : 324x248  80352 bytes */
/* 7  : 248x162  40176 bytes */
/* c+f: 162*124  20088 bytes */

		{ 0x150e, 0x8e },
		{ 0x150f, 0x37 },
		{ 0x15c0, 0x00 },
		{ 0x15c1, 1023 }, /* 160x120, ISOC_PACKET_SIZE */
		{ 0x15c3, 0x08 },	/* 0x04/0x14 ... test pictures ??? */


		{ 0x143f, 0x01 },	/* commit settings */

	};

	for (i = 0; i < ARRAY_SIZE(st6422_bridge_init) && !err; i++) {
		err = stv06xx_write_bridge(sd, st6422_bridge_init[i][0],
					       st6422_bridge_init[i][1]);
	}

	return err;
}

static void st6422_disconnect(struct sd *sd)
{
	sd->sensor = NULL;
	kfree(sd->sensor_priv);
}

static int st6422_start(struct sd *sd)
{
	int err, packet_size;
	struct cam *cam = &sd->gspca_dev.cam;
	s32 *sensor_settings = sd->sensor_priv;
	struct usb_host_interface *alt;
	struct usb_interface *intf;

	intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface);
	alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt);
	if (!alt) {
		err("Couldn't get altsetting");
		return -EIO;
	}

	packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
	err = stv06xx_write_bridge(sd, 0x15c1, packet_size);
	if (err < 0)
		return err;

	if (cam->cam_mode[sd->gspca_dev.curr_mode].priv)
		err = stv06xx_write_bridge(sd, 0x1505, 0x0f);
	else
		err = stv06xx_write_bridge(sd, 0x1505, 0x02);
	if (err < 0)
		return err;

	err = st6422_set_brightness(&sd->gspca_dev,
				    sensor_settings[BRIGHTNESS_IDX]);
	if (err < 0)
		return err;

	err = st6422_set_contrast(&sd->gspca_dev,
				  sensor_settings[CONTRAST_IDX]);
	if (err < 0)
		return err;

	err = st6422_set_exposure(&sd->gspca_dev,
				  sensor_settings[EXPOSURE_IDX]);
	if (err < 0)
		return err;

	err = st6422_set_gain(&sd->gspca_dev,
			      sensor_settings[GAIN_IDX]);
	if (err < 0)
		return err;

	PDEBUG(D_STREAM, "Starting stream");

	return 0;
}

static int st6422_stop(struct sd *sd)
{
	PDEBUG(D_STREAM, "Halting stream");

	return 0;
}

static int st6422_get_brightness(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) gspca_dev;
	s32 *sensor_settings = sd->sensor_priv;

	*val = sensor_settings[BRIGHTNESS_IDX];

	PDEBUG(D_V4L2, "Read brightness %d", *val);

	return 0;
}

static int st6422_set_brightness(struct gspca_dev *gspca_dev, __s32 val)
{
	int err;
	struct sd *sd = (struct sd *) gspca_dev;
	s32 *sensor_settings = sd->sensor_priv;

	sensor_settings[BRIGHTNESS_IDX] = val;

	if (!gspca_dev->streaming)
		return 0;

	/* val goes from 0 -> 31 */
	PDEBUG(D_V4L2, "Set brightness to %d", val);
	err = stv06xx_write_bridge(sd, 0x1432, val);
	if (err < 0)
		return err;

	/* commit settings */
	err = stv06xx_write_bridge(sd, 0x143f, 0x01);
	return (err < 0) ? err : 0;
}

static int st6422_get_contrast(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) gspca_dev;
	s32 *sensor_settings = sd->sensor_priv;

	*val = sensor_settings[CONTRAST_IDX];

	PDEBUG(D_V4L2, "Read contrast %d", *val);

	return 0;
}

static int st6422_set_contrast(struct gspca_dev *gspca_dev, __s32 val)
{
	int err;
	struct sd *sd = (struct sd *) gspca_dev;
	s32 *sensor_settings = sd->sensor_priv;

	sensor_settings[CONTRAST_IDX] = val;

	if (!gspca_dev->streaming)
		return 0;

	/* Val goes from 0 -> 15 */
	PDEBUG(D_V4L2, "Set contrast to %d\n", val);
	err = stv06xx_write_bridge(sd, 0x143a, 0xf0 | val);
	if (err < 0)
		return err;

	/* commit settings */
	err = stv06xx_write_bridge(sd, 0x143f, 0x01);
	return (err < 0) ? err : 0;
}

static int st6422_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) gspca_dev;
	s32 *sensor_settings = sd->sensor_priv;

	*val = sensor_settings[GAIN_IDX];

	PDEBUG(D_V4L2, "Read gain %d", *val);

	return 0;
}

static int st6422_set_gain(struct gspca_dev *gspca_dev, __s32 val)
{
	int err;
	struct sd *sd = (struct sd *) gspca_dev;
	s32 *sensor_settings = sd->sensor_priv;

	sensor_settings[GAIN_IDX] = val;

	if (!gspca_dev->streaming)
		return 0;

	PDEBUG(D_V4L2, "Set gain to %d", val);

	/* Set red, green, blue, gain */
	err = stv06xx_write_bridge(sd, 0x0509, val);
	if (err < 0)
		return err;

	err = stv06xx_write_bridge(sd, 0x050a, val);
	if (err < 0)
		return err;

	err = stv06xx_write_bridge(sd, 0x050b, val);
	if (err < 0)
		return err;

	/* 2 mystery writes */
	err = stv06xx_write_bridge(sd, 0x050c, 0x2a);
	if (err < 0)
		return err;

	err = stv06xx_write_bridge(sd, 0x050d, 0x01);
	if (err < 0)
		return err;

	/* commit settings */
	err = stv06xx_write_bridge(sd, 0x143f, 0x01);
	return (err < 0) ? err : 0;
}

static int st6422_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) gspca_dev;
	s32 *sensor_settings = sd->sensor_priv;

	*val = sensor_settings[EXPOSURE_IDX];

	PDEBUG(D_V4L2, "Read exposure %d", *val);

	return 0;
}

static int st6422_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
{
	int err;
	struct sd *sd = (struct sd *) gspca_dev;
	s32 *sensor_settings = sd->sensor_priv;

	sensor_settings[EXPOSURE_IDX] = val;

	if (!gspca_dev->streaming)
		return 0;

	PDEBUG(D_V4L2, "Set exposure to %d\n", val);
	err = stv06xx_write_bridge(sd, 0x143d, val & 0xff);
	if (err < 0)
		return err;

	err = stv06xx_write_bridge(sd, 0x143e, val >> 8);
	if (err < 0)
		return err;

	/* commit settings */
	err = stv06xx_write_bridge(sd, 0x143f, 0x01);
	return (err < 0) ? err : 0;
}