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  • Committer: Package Import Robot
  • Author(s): Alessio Igor Bogani
  • Date: 2011-10-26 11:13:05 UTC
  • Revision ID: package-import@ubuntu.com-20111026111305-tz023xykf0i6eosh
Tags: upstream-3.2.0
Import upstream version 3.2.0

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drivers/media/video/sn9c102/sn9c102_pas202bcb.c
 
1
/***************************************************************************
 
2
 * Plug-in for PAS202BCB image sensor connected to the SN9C1xx PC Camera   *
 
3
 * Controllers                                                             *
 
4
 *                                                                         *
 
5
 * Copyright (C) 2004 by Carlos Eduardo Medaglia Dyonisio                  *
 
6
 *                       <medaglia@undl.org.br>                            *
 
7
 *                                                                         *
 
8
 * Support for SN9C103, DAC Magnitude, exposure and green gain controls    *
 
9
 * added by Luca Risolia <luca.risolia@studio.unibo.it>                    *
 
10
 *                                                                         *
 
11
 * This program is free software; you can redistribute it and/or modify    *
 
12
 * it under the terms of the GNU General Public License as published by    *
 
13
 * the Free Software Foundation; either version 2 of the License, or       *
 
14
 * (at your option) any later version.                                     *
 
15
 *                                                                         *
 
16
 * This program is distributed in the hope that it will be useful,         *
 
17
 * but WITHOUT ANY WARRANTY; without even the implied warranty of          *
 
18
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           *
 
19
 * GNU General Public License for more details.                            *
 
20
 *                                                                         *
 
21
 * You should have received a copy of the GNU General Public License       *
 
22
 * along with this program; if not, write to the Free Software             *
 
23
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.               *
 
24
 ***************************************************************************/
 
25
 
 
26
#include <linux/delay.h>
 
27
#include "sn9c102_sensor.h"
 
28
#include "sn9c102_devtable.h"
 
29
 
 
30
 
 
31
static int pas202bcb_init(struct sn9c102_device* cam)
 
32
{
 
33
        int err = 0;
 
34
 
 
35
        switch (sn9c102_get_bridge(cam)) {
 
36
        case BRIDGE_SN9C101:
 
37
        case BRIDGE_SN9C102:
 
38
                err = sn9c102_write_const_regs(cam, {0x00, 0x10}, {0x00, 0x11},
 
39
                                               {0x00, 0x14}, {0x20, 0x17},
 
40
                                               {0x30, 0x19}, {0x09, 0x18});
 
41
                break;
 
42
        case BRIDGE_SN9C103:
 
43
                err = sn9c102_write_const_regs(cam, {0x00, 0x02}, {0x00, 0x03},
 
44
                                               {0x1a, 0x04}, {0x20, 0x05},
 
45
                                               {0x20, 0x06}, {0x20, 0x07},
 
46
                                               {0x00, 0x10}, {0x00, 0x11},
 
47
                                               {0x00, 0x14}, {0x20, 0x17},
 
48
                                               {0x30, 0x19}, {0x09, 0x18},
 
49
                                               {0x02, 0x1c}, {0x03, 0x1d},
 
50
                                               {0x0f, 0x1e}, {0x0c, 0x1f},
 
51
                                               {0x00, 0x20}, {0x10, 0x21},
 
52
                                               {0x20, 0x22}, {0x30, 0x23},
 
53
                                               {0x40, 0x24}, {0x50, 0x25},
 
54
                                               {0x60, 0x26}, {0x70, 0x27},
 
55
                                               {0x80, 0x28}, {0x90, 0x29},
 
56
                                               {0xa0, 0x2a}, {0xb0, 0x2b},
 
57
                                               {0xc0, 0x2c}, {0xd0, 0x2d},
 
58
                                               {0xe0, 0x2e}, {0xf0, 0x2f},
 
59
                                               {0xff, 0x30});
 
60
                break;
 
61
        default:
 
62
                break;
 
63
        }
 
64
 
 
65
        err += sn9c102_i2c_write(cam, 0x02, 0x14);
 
66
        err += sn9c102_i2c_write(cam, 0x03, 0x40);
 
67
        err += sn9c102_i2c_write(cam, 0x0d, 0x2c);
 
68
        err += sn9c102_i2c_write(cam, 0x0e, 0x01);
 
69
        err += sn9c102_i2c_write(cam, 0x0f, 0xa9);
 
70
        err += sn9c102_i2c_write(cam, 0x10, 0x08);
 
71
        err += sn9c102_i2c_write(cam, 0x13, 0x63);
 
72
        err += sn9c102_i2c_write(cam, 0x15, 0x70);
 
73
        err += sn9c102_i2c_write(cam, 0x11, 0x01);
 
74
 
 
75
        msleep(400);
 
76
 
 
77
        return err;
 
78
}
 
79
 
 
80
 
 
81
static int pas202bcb_get_ctrl(struct sn9c102_device* cam,
 
82
                              struct v4l2_control* ctrl)
 
83
{
 
84
        switch (ctrl->id) {
 
85
        case V4L2_CID_EXPOSURE:
 
86
                {
 
87
                        int r1 = sn9c102_i2c_read(cam, 0x04),
 
88
                            r2 = sn9c102_i2c_read(cam, 0x05);
 
89
                        if (r1 < 0 || r2 < 0)
 
90
                                return -EIO;
 
91
                        ctrl->value = (r1 << 6) | (r2 & 0x3f);
 
92
                }
 
93
                return 0;
 
94
        case V4L2_CID_RED_BALANCE:
 
95
                if ((ctrl->value = sn9c102_i2c_read(cam, 0x09)) < 0)
 
96
                        return -EIO;
 
97
                ctrl->value &= 0x0f;
 
98
                return 0;
 
99
        case V4L2_CID_BLUE_BALANCE:
 
100
                if ((ctrl->value = sn9c102_i2c_read(cam, 0x07)) < 0)
 
101
                        return -EIO;
 
102
                ctrl->value &= 0x0f;
 
103
                return 0;
 
104
        case V4L2_CID_GAIN:
 
105
                if ((ctrl->value = sn9c102_i2c_read(cam, 0x10)) < 0)
 
106
                        return -EIO;
 
107
                ctrl->value &= 0x1f;
 
108
                return 0;
 
109
        case SN9C102_V4L2_CID_GREEN_BALANCE:
 
110
                if ((ctrl->value = sn9c102_i2c_read(cam, 0x08)) < 0)
 
111
                        return -EIO;
 
112
                ctrl->value &= 0x0f;
 
113
                return 0;
 
114
        case SN9C102_V4L2_CID_DAC_MAGNITUDE:
 
115
                if ((ctrl->value = sn9c102_i2c_read(cam, 0x0c)) < 0)
 
116
                        return -EIO;
 
117
                return 0;
 
118
        default:
 
119
                return -EINVAL;
 
120
        }
 
121
}
 
122
 
 
123
 
 
124
static int pas202bcb_set_pix_format(struct sn9c102_device* cam,
 
125
                                    const struct v4l2_pix_format* pix)
 
126
{
 
127
        int err = 0;
 
128
 
 
129
        if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X)
 
130
                err += sn9c102_write_reg(cam, 0x28, 0x17);
 
131
        else
 
132
                err += sn9c102_write_reg(cam, 0x20, 0x17);
 
133
 
 
134
        return err;
 
135
}
 
136
 
 
137
 
 
138
static int pas202bcb_set_ctrl(struct sn9c102_device* cam,
 
139
                              const struct v4l2_control* ctrl)
 
140
{
 
141
        int err = 0;
 
142
 
 
143
        switch (ctrl->id) {
 
144
        case V4L2_CID_EXPOSURE:
 
145
                err += sn9c102_i2c_write(cam, 0x04, ctrl->value >> 6);
 
146
                err += sn9c102_i2c_write(cam, 0x05, ctrl->value & 0x3f);
 
147
                break;
 
148
        case V4L2_CID_RED_BALANCE:
 
149
                err += sn9c102_i2c_write(cam, 0x09, ctrl->value);
 
150
                break;
 
151
        case V4L2_CID_BLUE_BALANCE:
 
152
                err += sn9c102_i2c_write(cam, 0x07, ctrl->value);
 
153
                break;
 
154
        case V4L2_CID_GAIN:
 
155
                err += sn9c102_i2c_write(cam, 0x10, ctrl->value);
 
156
                break;
 
157
        case SN9C102_V4L2_CID_GREEN_BALANCE:
 
158
                err += sn9c102_i2c_write(cam, 0x08, ctrl->value);
 
159
                break;
 
160
        case SN9C102_V4L2_CID_DAC_MAGNITUDE:
 
161
                err += sn9c102_i2c_write(cam, 0x0c, ctrl->value);
 
162
                break;
 
163
        default:
 
164
                return -EINVAL;
 
165
        }
 
166
        err += sn9c102_i2c_write(cam, 0x11, 0x01);
 
167
 
 
168
        return err ? -EIO : 0;
 
169
}
 
170
 
 
171
 
 
172
static int pas202bcb_set_crop(struct sn9c102_device* cam,
 
173
                              const struct v4l2_rect* rect)
 
174
{
 
175
        struct sn9c102_sensor* s = sn9c102_get_sensor(cam);
 
176
        int err = 0;
 
177
        u8 h_start = 0,
 
178
           v_start = (u8)(rect->top - s->cropcap.bounds.top) + 3;
 
179
 
 
180
        switch (sn9c102_get_bridge(cam)) {
 
181
        case BRIDGE_SN9C101:
 
182
        case BRIDGE_SN9C102:
 
183
                h_start = (u8)(rect->left - s->cropcap.bounds.left) + 4;
 
184
                break;
 
185
        case BRIDGE_SN9C103:
 
186
                h_start = (u8)(rect->left - s->cropcap.bounds.left) + 3;
 
187
                break;
 
188
        default:
 
189
                break;
 
190
        }
 
191
 
 
192
        err += sn9c102_write_reg(cam, h_start, 0x12);
 
193
        err += sn9c102_write_reg(cam, v_start, 0x13);
 
194
 
 
195
        return err;
 
196
}
 
197
 
 
198
 
 
199
static const struct sn9c102_sensor pas202bcb = {
 
200
        .name = "PAS202BCB",
 
201
        .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
 
202
        .supported_bridge = BRIDGE_SN9C101 | BRIDGE_SN9C102 | BRIDGE_SN9C103,
 
203
        .sysfs_ops = SN9C102_I2C_READ | SN9C102_I2C_WRITE,
 
204
        .frequency = SN9C102_I2C_400KHZ | SN9C102_I2C_100KHZ,
 
205
        .interface = SN9C102_I2C_2WIRES,
 
206
        .i2c_slave_id = 0x40,
 
207
        .init = &pas202bcb_init,
 
208
        .qctrl = {
 
209
                {
 
210
                        .id = V4L2_CID_EXPOSURE,
 
211
                        .type = V4L2_CTRL_TYPE_INTEGER,
 
212
                        .name = "exposure",
 
213
                        .minimum = 0x01e5,
 
214
                        .maximum = 0x3fff,
 
215
                        .step = 0x0001,
 
216
                        .default_value = 0x01e5,
 
217
                        .flags = 0,
 
218
                },
 
219
                {
 
220
                        .id = V4L2_CID_GAIN,
 
221
                        .type = V4L2_CTRL_TYPE_INTEGER,
 
222
                        .name = "global gain",
 
223
                        .minimum = 0x00,
 
224
                        .maximum = 0x1f,
 
225
                        .step = 0x01,
 
226
                        .default_value = 0x0b,
 
227
                        .flags = 0,
 
228
                },
 
229
                {
 
230
                        .id = V4L2_CID_RED_BALANCE,
 
231
                        .type = V4L2_CTRL_TYPE_INTEGER,
 
232
                        .name = "red balance",
 
233
                        .minimum = 0x00,
 
234
                        .maximum = 0x0f,
 
235
                        .step = 0x01,
 
236
                        .default_value = 0x00,
 
237
                        .flags = 0,
 
238
                },
 
239
                {
 
240
                        .id = V4L2_CID_BLUE_BALANCE,
 
241
                        .type = V4L2_CTRL_TYPE_INTEGER,
 
242
                        .name = "blue balance",
 
243
                        .minimum = 0x00,
 
244
                        .maximum = 0x0f,
 
245
                        .step = 0x01,
 
246
                        .default_value = 0x05,
 
247
                        .flags = 0,
 
248
                },
 
249
                {
 
250
                        .id = SN9C102_V4L2_CID_GREEN_BALANCE,
 
251
                        .type = V4L2_CTRL_TYPE_INTEGER,
 
252
                        .name = "green balance",
 
253
                        .minimum = 0x00,
 
254
                        .maximum = 0x0f,
 
255
                        .step = 0x01,
 
256
                        .default_value = 0x00,
 
257
                        .flags = 0,
 
258
                },
 
259
                {
 
260
                        .id = SN9C102_V4L2_CID_DAC_MAGNITUDE,
 
261
                        .type = V4L2_CTRL_TYPE_INTEGER,
 
262
                        .name = "DAC magnitude",
 
263
                        .minimum = 0x00,
 
264
                        .maximum = 0xff,
 
265
                        .step = 0x01,
 
266
                        .default_value = 0x04,
 
267
                        .flags = 0,
 
268
                },
 
269
        },
 
270
        .get_ctrl = &pas202bcb_get_ctrl,
 
271
        .set_ctrl = &pas202bcb_set_ctrl,
 
272
        .cropcap = {
 
273
                .bounds = {
 
274
                        .left = 0,
 
275
                        .top = 0,
 
276
                        .width = 640,
 
277
                        .height = 480,
 
278
                },
 
279
                .defrect = {
 
280
                        .left = 0,
 
281
                        .top = 0,
 
282
                        .width = 640,
 
283
                        .height = 480,
 
284
                },
 
285
        },
 
286
        .set_crop = &pas202bcb_set_crop,
 
287
        .pix_format = {
 
288
                .width = 640,
 
289
                .height = 480,
 
290
                .pixelformat = V4L2_PIX_FMT_SBGGR8,
 
291
                .priv = 8,
 
292
        },
 
293
        .set_pix_format = &pas202bcb_set_pix_format
 
294
};
 
295
 
 
296
 
 
297
int sn9c102_probe_pas202bcb(struct sn9c102_device* cam)
 
298
{
 
299
        int r0 = 0, r1 = 0, err = 0;
 
300
        unsigned int pid = 0;
 
301
 
 
302
        /*
 
303
         *  Minimal initialization to enable the I2C communication
 
304
         *  NOTE: do NOT change the values!
 
305
         */
 
306
        switch (sn9c102_get_bridge(cam)) {
 
307
        case BRIDGE_SN9C101:
 
308
        case BRIDGE_SN9C102:
 
309
                err = sn9c102_write_const_regs(cam,
 
310
                                               {0x01, 0x01}, /* power down */
 
311
                                               {0x40, 0x01}, /* power on */
 
312
                                               {0x28, 0x17});/* clock 24 MHz */
 
313
                break;
 
314
        case BRIDGE_SN9C103: /* do _not_ change anything! */
 
315
                err = sn9c102_write_const_regs(cam, {0x09, 0x01}, {0x44, 0x01},
 
316
                                               {0x44, 0x02}, {0x29, 0x17});
 
317
                break;
 
318
        default:
 
319
                break;
 
320
        }
 
321
 
 
322
        r0 = sn9c102_i2c_try_read(cam, &pas202bcb, 0x00);
 
323
        r1 = sn9c102_i2c_try_read(cam, &pas202bcb, 0x01);
 
324
 
 
325
        if (err || r0 < 0 || r1 < 0)
 
326
                return -EIO;
 
327
 
 
328
        pid = (r0 << 4) | ((r1 & 0xf0) >> 4);
 
329
        if (pid != 0x017)
 
330
                return -ENODEV;
 
331
 
 
332
        sn9c102_attach_sensor(cam, &pas202bcb);
 
333
 
 
334
        return 0;
 
335
}