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
|
/***************************************************************************
* Plug-in for PAS202BCB image sensor connected to the SN9C1xx PC Camera *
* Controllers *
* *
* Copyright (C) 2004 by Carlos Eduardo Medaglia Dyonisio *
* <medaglia@undl.org.br> *
* http://cadu.homelinux.com:8080/ *
* *
* Support for SN9C103, DAC Magnitude, exposure and green gain controls *
* added by Luca Risolia <luca.risolia@studio.unibo.it> *
* *
* 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., 675 Mass Ave, Cambridge, MA 02139, USA. *
***************************************************************************/
#include <linux/delay.h>
#include "sn9c102_sensor.h"
#include "sn9c102_devtable.h"
static int pas202bcb_init(struct sn9c102_device* cam)
{
int err = 0;
switch (sn9c102_get_bridge(cam)) {
case BRIDGE_SN9C101:
case BRIDGE_SN9C102:
err = sn9c102_write_const_regs(cam, {0x00, 0x10}, {0x00, 0x11},
{0x00, 0x14}, {0x20, 0x17},
{0x30, 0x19}, {0x09, 0x18});
break;
case BRIDGE_SN9C103:
err = sn9c102_write_const_regs(cam, {0x00, 0x02}, {0x00, 0x03},
{0x1a, 0x04}, {0x20, 0x05},
{0x20, 0x06}, {0x20, 0x07},
{0x00, 0x10}, {0x00, 0x11},
{0x00, 0x14}, {0x20, 0x17},
{0x30, 0x19}, {0x09, 0x18},
{0x02, 0x1c}, {0x03, 0x1d},
{0x0f, 0x1e}, {0x0c, 0x1f},
{0x00, 0x20}, {0x10, 0x21},
{0x20, 0x22}, {0x30, 0x23},
{0x40, 0x24}, {0x50, 0x25},
{0x60, 0x26}, {0x70, 0x27},
{0x80, 0x28}, {0x90, 0x29},
{0xa0, 0x2a}, {0xb0, 0x2b},
{0xc0, 0x2c}, {0xd0, 0x2d},
{0xe0, 0x2e}, {0xf0, 0x2f},
{0xff, 0x30});
break;
default:
break;
}
err += sn9c102_i2c_write(cam, 0x02, 0x14);
err += sn9c102_i2c_write(cam, 0x03, 0x40);
err += sn9c102_i2c_write(cam, 0x0d, 0x2c);
err += sn9c102_i2c_write(cam, 0x0e, 0x01);
err += sn9c102_i2c_write(cam, 0x0f, 0xa9);
err += sn9c102_i2c_write(cam, 0x10, 0x08);
err += sn9c102_i2c_write(cam, 0x13, 0x63);
err += sn9c102_i2c_write(cam, 0x15, 0x70);
err += sn9c102_i2c_write(cam, 0x11, 0x01);
msleep(400);
return err;
}
static int pas202bcb_get_ctrl(struct sn9c102_device* cam,
struct v4l2_control* ctrl)
{
switch (ctrl->id) {
case V4L2_CID_EXPOSURE:
{
int r1 = sn9c102_i2c_read(cam, 0x04),
r2 = sn9c102_i2c_read(cam, 0x05);
if (r1 < 0 || r2 < 0)
return -EIO;
ctrl->value = (r1 << 6) | (r2 & 0x3f);
}
return 0;
case V4L2_CID_RED_BALANCE:
if ((ctrl->value = sn9c102_i2c_read(cam, 0x09)) < 0)
return -EIO;
ctrl->value &= 0x0f;
return 0;
case V4L2_CID_BLUE_BALANCE:
if ((ctrl->value = sn9c102_i2c_read(cam, 0x07)) < 0)
return -EIO;
ctrl->value &= 0x0f;
return 0;
case V4L2_CID_GAIN:
if ((ctrl->value = sn9c102_i2c_read(cam, 0x10)) < 0)
return -EIO;
ctrl->value &= 0x1f;
return 0;
case SN9C102_V4L2_CID_GREEN_BALANCE:
if ((ctrl->value = sn9c102_i2c_read(cam, 0x08)) < 0)
return -EIO;
ctrl->value &= 0x0f;
return 0;
case SN9C102_V4L2_CID_DAC_MAGNITUDE:
if ((ctrl->value = sn9c102_i2c_read(cam, 0x0c)) < 0)
return -EIO;
return 0;
default:
return -EINVAL;
}
}
static int pas202bcb_set_pix_format(struct sn9c102_device* cam,
const struct v4l2_pix_format* pix)
{
int err = 0;
if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X)
err += sn9c102_write_reg(cam, 0x28, 0x17);
else
err += sn9c102_write_reg(cam, 0x20, 0x17);
return err;
}
static int pas202bcb_set_ctrl(struct sn9c102_device* cam,
const struct v4l2_control* ctrl)
{
int err = 0;
switch (ctrl->id) {
case V4L2_CID_EXPOSURE:
err += sn9c102_i2c_write(cam, 0x04, ctrl->value >> 6);
err += sn9c102_i2c_write(cam, 0x05, ctrl->value & 0x3f);
break;
case V4L2_CID_RED_BALANCE:
err += sn9c102_i2c_write(cam, 0x09, ctrl->value);
break;
case V4L2_CID_BLUE_BALANCE:
err += sn9c102_i2c_write(cam, 0x07, ctrl->value);
break;
case V4L2_CID_GAIN:
err += sn9c102_i2c_write(cam, 0x10, ctrl->value);
break;
case SN9C102_V4L2_CID_GREEN_BALANCE:
err += sn9c102_i2c_write(cam, 0x08, ctrl->value);
break;
case SN9C102_V4L2_CID_DAC_MAGNITUDE:
err += sn9c102_i2c_write(cam, 0x0c, ctrl->value);
break;
default:
return -EINVAL;
}
err += sn9c102_i2c_write(cam, 0x11, 0x01);
return err ? -EIO : 0;
}
static int pas202bcb_set_crop(struct sn9c102_device* cam,
const struct v4l2_rect* rect)
{
struct sn9c102_sensor* s = sn9c102_get_sensor(cam);
int err = 0;
u8 h_start = 0,
v_start = (u8)(rect->top - s->cropcap.bounds.top) + 3;
switch (sn9c102_get_bridge(cam)) {
case BRIDGE_SN9C101:
case BRIDGE_SN9C102:
h_start = (u8)(rect->left - s->cropcap.bounds.left) + 4;
break;
case BRIDGE_SN9C103:
h_start = (u8)(rect->left - s->cropcap.bounds.left) + 3;
break;
default:
break;
}
err += sn9c102_write_reg(cam, h_start, 0x12);
err += sn9c102_write_reg(cam, v_start, 0x13);
return err;
}
static const struct sn9c102_sensor pas202bcb = {
.name = "PAS202BCB",
.maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
.supported_bridge = BRIDGE_SN9C101 | BRIDGE_SN9C102 | BRIDGE_SN9C103,
.sysfs_ops = SN9C102_I2C_READ | SN9C102_I2C_WRITE,
.frequency = SN9C102_I2C_400KHZ | SN9C102_I2C_100KHZ,
.interface = SN9C102_I2C_2WIRES,
.i2c_slave_id = 0x40,
.init = &pas202bcb_init,
.qctrl = {
{
.id = V4L2_CID_EXPOSURE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "exposure",
.minimum = 0x01e5,
.maximum = 0x3fff,
.step = 0x0001,
.default_value = 0x01e5,
.flags = 0,
},
{
.id = V4L2_CID_GAIN,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "global gain",
.minimum = 0x00,
.maximum = 0x1f,
.step = 0x01,
.default_value = 0x0b,
.flags = 0,
},
{
.id = V4L2_CID_RED_BALANCE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "red balance",
.minimum = 0x00,
.maximum = 0x0f,
.step = 0x01,
.default_value = 0x00,
.flags = 0,
},
{
.id = V4L2_CID_BLUE_BALANCE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "blue balance",
.minimum = 0x00,
.maximum = 0x0f,
.step = 0x01,
.default_value = 0x05,
.flags = 0,
},
{
.id = SN9C102_V4L2_CID_GREEN_BALANCE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "green balance",
.minimum = 0x00,
.maximum = 0x0f,
.step = 0x01,
.default_value = 0x00,
.flags = 0,
},
{
.id = SN9C102_V4L2_CID_DAC_MAGNITUDE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "DAC magnitude",
.minimum = 0x00,
.maximum = 0xff,
.step = 0x01,
.default_value = 0x04,
.flags = 0,
},
},
.get_ctrl = &pas202bcb_get_ctrl,
.set_ctrl = &pas202bcb_set_ctrl,
.cropcap = {
.bounds = {
.left = 0,
.top = 0,
.width = 640,
.height = 480,
},
.defrect = {
.left = 0,
.top = 0,
.width = 640,
.height = 480,
},
},
.set_crop = &pas202bcb_set_crop,
.pix_format = {
.width = 640,
.height = 480,
.pixelformat = V4L2_PIX_FMT_SBGGR8,
.priv = 8,
},
.set_pix_format = &pas202bcb_set_pix_format
};
int sn9c102_probe_pas202bcb(struct sn9c102_device* cam)
{
int r0 = 0, r1 = 0, err = 0;
unsigned int pid = 0;
/*
* Minimal initialization to enable the I2C communication
* NOTE: do NOT change the values!
*/
switch (sn9c102_get_bridge(cam)) {
case BRIDGE_SN9C101:
case BRIDGE_SN9C102:
err = sn9c102_write_const_regs(cam,
{0x01, 0x01}, /* power down */
{0x40, 0x01}, /* power on */
{0x28, 0x17});/* clock 24 MHz */
break;
case BRIDGE_SN9C103: /* do _not_ change anything! */
err = sn9c102_write_const_regs(cam, {0x09, 0x01}, {0x44, 0x01},
{0x44, 0x02}, {0x29, 0x17});
break;
default:
break;
}
r0 = sn9c102_i2c_try_read(cam, &pas202bcb, 0x00);
r1 = sn9c102_i2c_try_read(cam, &pas202bcb, 0x01);
if (err || r0 < 0 || r1 < 0)
return -EIO;
pid = (r0 << 4) | ((r1 & 0xf0) >> 4);
if (pid != 0x017)
return -ENODEV;
sn9c102_attach_sensor(cam, &pas202bcb);
return 0;
}
|
