summaryrefslogtreecommitdiffstats
path: root/drivers/media/video/gspca/m5602/m5602_mt9m111.c
blob: c0e71c33145433a80437a44ec0e7adc6659c3449 (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
/*
 * Driver for the mt9m111 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_mt9m111.h"

static void mt9m111_dump_registers(struct sd *sd);

int mt9m111_probe(struct sd *sd)
{
	u8 data[2] = {0x00, 0x00};
	int i;

	if (force_sensor) {
		if (force_sensor == MT9M111_SENSOR) {
			info("Forcing a %s sensor", mt9m111.name);
			goto sensor_found;
		}
		/* If we want to force another sensor, don't try to probe this
		 * one */
		return -ENODEV;
	}

	info("Probing for a mt9m111 sensor");

	/* Do the preinit */
	for (i = 0; i < ARRAY_SIZE(preinit_mt9m111); i++) {
		if (preinit_mt9m111[i][0] == BRIDGE) {
			m5602_write_bridge(sd,
				preinit_mt9m111[i][1],
				preinit_mt9m111[i][2]);
		} else {
			data[0] = preinit_mt9m111[i][2];
			data[1] = preinit_mt9m111[i][3];
			m5602_write_sensor(sd,
				preinit_mt9m111[i][1], data, 2);
		}
	}

	if (m5602_read_sensor(sd, MT9M111_SC_CHIPVER, data, 2))
		return -ENODEV;

	if ((data[0] == 0x14) && (data[1] == 0x3a)) {
		info("Detected a mt9m111 sensor");
		goto sensor_found;
	}

	return -ENODEV;

sensor_found:
	sd->gspca_dev.cam.cam_mode = mt9m111.modes;
	sd->gspca_dev.cam.nmodes = mt9m111.nmodes;
	sd->desc->ctrls = mt9m111.ctrls;
	sd->desc->nctrls = mt9m111.nctrls;
	return 0;
}

int mt9m111_init(struct sd *sd)
{
	int i, err = 0;

	/* Init the sensor */
	for (i = 0; i < ARRAY_SIZE(init_mt9m111) && !err; i++) {
		u8 data[2];

		if (init_mt9m111[i][0] == BRIDGE) {
			err = m5602_write_bridge(sd,
				init_mt9m111[i][1],
				init_mt9m111[i][2]);
		} else {
			data[0] = init_mt9m111[i][2];
			data[1] = init_mt9m111[i][3];
			err = m5602_write_sensor(sd,
				init_mt9m111[i][1], data, 2);
		}
	}

	if (dump_sensor)
		mt9m111_dump_registers(sd);

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

int mt9m111_power_down(struct sd *sd)
{
	return 0;
}

int mt9m111_get_vflip(struct gspca_dev *gspca_dev, __s32 *val)
{
	int err;
	u8 data[2] = {0x00, 0x00};
	struct sd *sd = (struct sd *) gspca_dev;

	err = m5602_read_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B,
				  data, 2);
	*val = data[0] & MT9M111_RMB_MIRROR_ROWS;
	PDEBUG(D_V4L2, "Read vertical flip %d", *val);

	return err;
}

int mt9m111_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
{
	int err;
	u8 data[2] = {0x00, 0x00};
	struct sd *sd = (struct sd *) gspca_dev;

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

	/* Set the correct page map */
	err = m5602_write_sensor(sd, MT9M111_PAGE_MAP, data, 2);
	if (err < 0)
		goto out;

	err = m5602_read_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B, data, 2);
	if (err < 0)
		goto out;

	data[0] = (data[0] & 0xfe) | val;
	err = m5602_write_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B,
				   data, 2);
out:
	return err;
}

int mt9m111_get_hflip(struct gspca_dev *gspca_dev, __s32 *val)
{
	int err;
	u8 data[2] = {0x00, 0x00};
	struct sd *sd = (struct sd *) gspca_dev;

	err = m5602_read_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B,
				  data, 2);
	*val = data[0] & MT9M111_RMB_MIRROR_COLS;
	PDEBUG(D_V4L2, "Read horizontal flip %d", *val);

	return err;
}

int mt9m111_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
{
	int err;
	u8 data[2] = {0x00, 0x00};
	struct sd *sd = (struct sd *) gspca_dev;

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

	/* Set the correct page map */
	err = m5602_write_sensor(sd, MT9M111_PAGE_MAP, data, 2);
	if (err < 0)
		goto out;

	err = m5602_read_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B, data, 2);
	if (err < 0)
		goto out;

	data[0] = (data[0] & 0xfd) | ((val << 1) & 0x02);
	err = m5602_write_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B,
					data, 2);
out:
	return err;
}

int mt9m111_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
{
	int err, tmp;
	u8 data[2] = {0x00, 0x00};
	struct sd *sd = (struct sd *) gspca_dev;

	err = m5602_read_sensor(sd, MT9M111_SC_GLOBAL_GAIN, data, 2);
	tmp = ((data[1] << 8) | data[0]);

	*val = ((tmp & (1 << 10)) * 2) |
	      ((tmp & (1 <<  9)) * 2) |
	      ((tmp & (1 <<  8)) * 2) |
	       (tmp & 0x7f);

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

	return err;
}

int mt9m111_set_gain(struct gspca_dev *gspca_dev, __s32 val)
{
	int err, tmp;
	u8 data[2] = {0x00, 0x00};
	struct sd *sd = (struct sd *) gspca_dev;

	/* Set the correct page map */
	err = m5602_write_sensor(sd, MT9M111_PAGE_MAP, data, 2);
	if (err < 0)
		goto out;

	if (val >= INITIAL_MAX_GAIN * 2 * 2 * 2)
		return -EINVAL;

	if ((val >= INITIAL_MAX_GAIN * 2 * 2) &&
	    (val < (INITIAL_MAX_GAIN - 1) * 2 * 2 * 2))
		tmp = (1 << 10) | (val << 9) |
				(val << 8) | (val / 8);
	else if ((val >= INITIAL_MAX_GAIN * 2) &&
		 (val <  INITIAL_MAX_GAIN * 2 * 2))
		tmp = (1 << 9) | (1 << 8) | (val / 4);
	else if ((val >= INITIAL_MAX_GAIN) &&
		 (val < INITIAL_MAX_GAIN * 2))
		tmp = (1 << 8) | (val / 2);
	else
		tmp = val;

	data[1] = (tmp & 0xff00) >> 8;
	data[0] = (tmp & 0xff);
	PDEBUG(D_V4L2, "tmp=%d, data[1]=%d, data[0]=%d", tmp,
	       data[1], data[0]);

	err = m5602_write_sensor(sd, MT9M111_SC_GLOBAL_GAIN,
				   data, 2);
out:
	return err;
}

static void mt9m111_dump_registers(struct sd *sd)
{
	u8 address, value[2] = {0x00, 0x00};

	info("Dumping the mt9m111 register state");

	info("Dumping the mt9m111 sensor core registers");
	value[1] = MT9M111_SENSOR_CORE;
	m5602_write_sensor(sd, MT9M111_PAGE_MAP, value, 2);
	for (address = 0; address < 0xff; address++) {
		m5602_read_sensor(sd, address, value, 2);
		info("register 0x%x contains 0x%x%x",
		     address, value[0], value[1]);
	}

	info("Dumping the mt9m111 color pipeline registers");
	value[1] = MT9M111_COLORPIPE;
	m5602_write_sensor(sd, MT9M111_PAGE_MAP, value, 2);
	for (address = 0; address < 0xff; address++) {
		m5602_read_sensor(sd, address, value, 2);
		info("register 0x%x contains 0x%x%x",
		     address, value[0], value[1]);
	}

	info("Dumping the mt9m111 camera control registers");
	value[1] = MT9M111_CAMERA_CONTROL;
	m5602_write_sensor(sd, MT9M111_PAGE_MAP, value, 2);
	for (address = 0; address < 0xff; address++) {
		m5602_read_sensor(sd, address, value, 2);
		info("register 0x%x contains 0x%x%x",
		     address, value[0], value[1]);
	}

	info("mt9m111 register state dump complete");
}
OpenPOWER on IntegriCloud