summaryrefslogtreecommitdiff
path: root/drivers/media/video/gspca/m5602/m5602_s5k4aa.c
blob: e564a61a72d77b15db396d1cb1c9ba7f97a58335 (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
/*
 * Driver for the s5k4aa sensor
 *
 * Copyright (C) 2008 Erik Andrén
 * Copyright (C) 2007 Ilyes Gouta. Based on the m5603x Linux Driver Project.
 * Copyright (C) 2005 m5603x Linux Driver Project <m5602@x3ng.com.br>
 *
 * Portions of code to USB interface and ALi driver software,
 * Copyright (c) 2006 Willem Duinker
 * v4l2 interface modeled after the V4L2 driver
 * for SN9C10x PC Camera Controllers
 *
 * 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, version 2.
 *
 */

#include "m5602_s5k4aa.h"

static
    const
	struct dmi_system_id s5k4aa_vflip_dmi_table[] = {
	{
		.ident = "Fujitsu-Siemens Amilo Xa 2528",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
			DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Xa 2528")
		}
	}, {
		.ident = "Fujitsu-Siemens Amilo Xi 2550",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
			DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Xi 2550")
		}
	}, {
		.ident = "MSI GX700",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
			DMI_MATCH(DMI_PRODUCT_NAME, "GX700"),
			DMI_MATCH(DMI_BIOS_DATE, "07/26/2007")
		}
	}, {
		.ident = "MSI GX700/GX705/EX700",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
			DMI_MATCH(DMI_PRODUCT_NAME, "GX700/GX705/EX700")
		}
	},
	{ }
};

static void s5k4aa_dump_registers(struct sd *sd);

int s5k4aa_probe(struct sd *sd)
{
	u8 prod_id[6] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
	const u8 expected_prod_id[6] = {0x00, 0x10, 0x00, 0x4b, 0x33, 0x75};
	int i, err = 0;

	if (force_sensor) {
		if (force_sensor == S5K4AA_SENSOR) {
			info("Forcing a %s sensor", s5k4aa.name);
			goto sensor_found;
		}
		/* If we want to force another sensor, don't try to probe this
		 * one */
		return -ENODEV;
	}

	info("Probing for a s5k4aa sensor");

	/* Preinit the sensor */
	for (i = 0; i < ARRAY_SIZE(preinit_s5k4aa) && !err; i++) {
		u8 data[2] = {0x00, 0x00};

		switch (preinit_s5k4aa[i][0]) {
		case BRIDGE:
			err = m5602_write_bridge(sd,
						 preinit_s5k4aa[i][1],
						 preinit_s5k4aa[i][2]);
			break;

		case SENSOR:
			data[0] = preinit_s5k4aa[i][2];
			err = m5602_write_sensor(sd,
						  preinit_s5k4aa[i][1],
						  data, 1);
			break;

		case SENSOR_LONG:
			data[0] = preinit_s5k4aa[i][2];
			data[1] = preinit_s5k4aa[i][3];
			err = m5602_write_sensor(sd,
						  preinit_s5k4aa[i][1],
						  data, 2);
			break;
		default:
			info("Invalid stream command, exiting init");
			return -EINVAL;
		}
	}

	/* Test some registers, but we don't know their exact meaning yet */
	if (m5602_read_sensor(sd, 0x00, prod_id, sizeof(prod_id)))
		return -ENODEV;

	if (memcmp(prod_id, expected_prod_id, sizeof(prod_id)))
		return -ENODEV;
	else
		info("Detected a s5k4aa sensor");

sensor_found:
	sd->gspca_dev.cam.cam_mode = s5k4aa.modes;
	sd->gspca_dev.cam.nmodes = s5k4aa.nmodes;
	sd->desc->ctrls = s5k4aa.ctrls;
	sd->desc->nctrls = s5k4aa.nctrls;

	return 0;
}

int s5k4aa_init(struct sd *sd)
{
	int i, err = 0;

	for (i = 0; i < ARRAY_SIZE(init_s5k4aa) && !err; i++) {
		u8 data[2] = {0x00, 0x00};

		switch (init_s5k4aa[i][0]) {
		case BRIDGE:
			err = m5602_write_bridge(sd,
				init_s5k4aa[i][1],
				init_s5k4aa[i][2]);
			break;

		case SENSOR:
			data[0] = init_s5k4aa[i][2];
			err = m5602_write_sensor(sd,
				init_s5k4aa[i][1], data, 1);
			break;

		case SENSOR_LONG:
			data[0] = init_s5k4aa[i][2];
			data[1] = init_s5k4aa[i][3];
			err = m5602_write_sensor(sd,
				init_s5k4aa[i][1], data, 2);
			break;
		default:
			info("Invalid stream command, exiting init");
			return -EINVAL;
		}
	}

	if (dump_sensor)
		s5k4aa_dump_registers(sd);

	if (!err && dmi_check_system(s5k4aa_vflip_dmi_table)) {
		u8 data = 0x02;
		info("vertical flip quirk active");
		m5602_write_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
		m5602_read_sensor(sd, S5K4AA_READ_MODE, &data, 1);
		data |= S5K4AA_RM_V_FLIP;
		data &= ~S5K4AA_RM_H_FLIP;
		m5602_write_sensor(sd, S5K4AA_READ_MODE, &data, 1);

		/* Decrement COLSTART to preserve color order (BGGR) */
		m5602_read_sensor(sd, S5K4AA_COLSTART_LO, &data, 1);
		data--;
		m5602_write_sensor(sd, S5K4AA_COLSTART_LO, &data, 1);

		/* Increment ROWSTART to preserve color order (BGGR) */
		m5602_read_sensor(sd, S5K4AA_ROWSTART_LO, &data, 1);
		data++;
		m5602_write_sensor(sd, S5K4AA_ROWSTART_LO, &data, 1);
	}

	return (err < 0) ? err : 0;
}

int s5k4aa_power_down(struct sd *sd)
{
	return 0;
}

int s5k4aa_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) gspca_dev;
	u8 data = S5K4AA_PAGE_MAP_2;
	int err;

	err = m5602_write_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
	if (err < 0)
		goto out;

	err = m5602_read_sensor(sd, S5K4AA_EXPOSURE_HI, &data, 1);
	if (err < 0)
		goto out;

	*val = data << 8;
	err = m5602_read_sensor(sd, S5K4AA_EXPOSURE_LO, &data, 1);
	*val |= data;
	PDEBUG(D_V4L2, "Read exposure %d", *val);
out:
	return err;
}

int s5k4aa_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
{
	struct sd *sd = (struct sd *) gspca_dev;
	u8 data = S5K4AA_PAGE_MAP_2;
	int err;

	PDEBUG(D_V4L2, "Set exposure to %d", val);
	err = m5602_write_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
	if (err < 0)
		goto out;
	data = (val >> 8) & 0xff;
	err = m5602_write_sensor(sd, S5K4AA_EXPOSURE_HI, &data, 1);
	if (err < 0)
		goto out;
	data = val & 0xff;
	err = m5602_write_sensor(sd, S5K4AA_EXPOSURE_LO, &data, 1);
out:
	return err;
}

int s5k4aa_get_vflip(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) gspca_dev;
	u8 data = S5K4AA_PAGE_MAP_2;
	int err;

	err = m5602_write_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
	if (err < 0)
		goto out;

	err = m5602_read_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
	*val = (data & S5K4AA_RM_V_FLIP) >> 7;
	PDEBUG(D_V4L2, "Read vertical flip %d", *val);

out:
	return err;
}

int s5k4aa_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
{
	struct sd *sd = (struct sd *) gspca_dev;
	u8 data = S5K4AA_PAGE_MAP_2;
	int err;

	PDEBUG(D_V4L2, "Set vertical flip to %d", val);
	err = m5602_write_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
	if (err < 0)
		goto out;
	err = m5602_write_sensor(sd, S5K4AA_READ_MODE, &data, 1);
	if (err < 0)
		goto out;
	data = ((data & ~S5K4AA_RM_V_FLIP)
			| ((val & 0x01) << 7));
	err = m5602_write_sensor(sd, S5K4AA_READ_MODE, &data, 1);
	if (err < 0)
		goto out;

	if (val) {
		err = m5602_read_sensor(sd, S5K4AA_ROWSTART_LO, &data, 1);
		if (err < 0)
			goto out;

		data++;
		err = m5602_write_sensor(sd, S5K4AA_ROWSTART_LO, &data, 1);
	} else {
		err = m5602_read_sensor(sd, S5K4AA_ROWSTART_LO, &data, 1);
		if (err < 0)
			goto out;

		data--;
		err = m5602_write_sensor(sd, S5K4AA_ROWSTART_LO, &data, 1);
	}
out:
	return err;
}

int s5k4aa_get_hflip(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) gspca_dev;
	u8 data = S5K4AA_PAGE_MAP_2;
	int err;

	err = m5602_write_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
	if (err < 0)
		goto out;

	err = m5602_read_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
	*val = (data & S5K4AA_RM_H_FLIP) >> 6;
	PDEBUG(D_V4L2, "Read horizontal flip %d", *val);
out:
	return err;
}

int s5k4aa_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
{
	struct sd *sd = (struct sd *) gspca_dev;
	u8 data = S5K4AA_PAGE_MAP_2;
	int err;

	PDEBUG(D_V4L2, "Set horizontal flip to %d",
	       val);
	err = m5602_write_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
	if (err < 0)
		goto out;
	err = m5602_write_sensor(sd, S5K4AA_READ_MODE, &data, 1);
	if (err < 0)
		goto out;

	data = ((data & ~S5K4AA_RM_H_FLIP) | ((val & 0x01) << 6));
	err = m5602_write_sensor(sd, S5K4AA_READ_MODE, &data, 1);
	if (err < 0)
		goto out;

	if (val) {
		err = m5602_read_sensor(sd, S5K4AA_COLSTART_LO, &data, 1);
		if (err < 0)
			goto out;
		data++;
		err = m5602_write_sensor(sd, S5K4AA_COLSTART_LO, &data, 1);
		if (err < 0)
			goto out;
	} else {
		err = m5602_read_sensor(sd, S5K4AA_COLSTART_LO, &data, 1);
		if (err < 0)
			goto out;
		data--;
		err = m5602_write_sensor(sd, S5K4AA_COLSTART_LO, &data, 1);
	}
out:
	return err;
}

int s5k4aa_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) gspca_dev;
	u8 data = S5K4AA_PAGE_MAP_2;
	int err;

	err = m5602_write_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
	if (err < 0)
		goto out;

	err = m5602_read_sensor(sd, S5K4AA_GAIN_2, &data, 1);
	*val = data;
	PDEBUG(D_V4L2, "Read gain %d", *val);

out:
	return err;
}

int s5k4aa_set_gain(struct gspca_dev *gspca_dev, __s32 val)
{
	struct sd *sd = (struct sd *) gspca_dev;
	u8 data = S5K4AA_PAGE_MAP_2;
	int err;

	PDEBUG(D_V4L2, "Set gain to %d", val);
	err = m5602_write_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
	if (err < 0)
		goto out;

	data = val & 0xff;
	err = m5602_write_sensor(sd, S5K4AA_GAIN_2, &data, 1);

out:
	return err;
}

static void s5k4aa_dump_registers(struct sd *sd)
{
	int address;
	u8 page, old_page;
	m5602_read_sensor(sd, S5K4AA_PAGE_MAP, &old_page, 1);
	for (page = 0; page < 16; page++) {
		m5602_write_sensor(sd, S5K4AA_PAGE_MAP, &page, 1);
		info("Dumping the s5k4aa register state for page 0x%x", page);
		for (address = 0; address <= 0xff; address++) {
			u8 value = 0;
			m5602_read_sensor(sd, address, &value, 1);
			info("register 0x%x contains 0x%x",
			     address, value);
		}
	}
	info("s5k4aa register state dump complete");

	for (page = 0; page < 16; page++) {
		m5602_write_sensor(sd, S5K4AA_PAGE_MAP, &page, 1);
		info("Probing for which registers that are "
		     "read/write for page 0x%x", page);
		for (address = 0; address <= 0xff; address++) {
			u8 old_value, ctrl_value, test_value = 0xff;

			m5602_read_sensor(sd, address, &old_value, 1);
			m5602_write_sensor(sd, address, &test_value, 1);
			m5602_read_sensor(sd, address, &ctrl_value, 1);

			if (ctrl_value == test_value)
				info("register 0x%x is writeable", address);
			else
				info("register 0x%x is read only", address);

			/* Restore original value */
			m5602_write_sensor(sd, address, &old_value, 1);
		}
	}
	info("Read/write register probing complete");
	m5602_write_sensor(sd, S5K4AA_PAGE_MAP, &old_page, 1);
}