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Linux 2.6.34-rc3
[pohmelfs.git] / drivers / media / video / sn9c102 / sn9c102_pas202bcb.c
blob2782f94cf6f80e7c04cb84b93c2994f2bb018d7b
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 * http://cadu.homelinux.com:8080/ *
8 * *
9 * Support for SN9C103, DAC Magnitude, exposure and green gain controls *
10 * added by Luca Risolia <luca.risolia@studio.unibo.it> *
11 * *
12 * This program is free software; you can redistribute it and/or modify *
13 * it under the terms of the GNU General Public License as published by *
14 * the Free Software Foundation; either version 2 of the License, or *
15 * (at your option) any later version. *
16 * *
17 * This program is distributed in the hope that it will be useful, *
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
20 * GNU General Public License for more details. *
21 * *
22 * You should have received a copy of the GNU General Public License *
23 * along with this program; if not, write to the Free Software *
24 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. *
25 ***************************************************************************/
26
27 #include <linux/delay.h>
28 #include "sn9c102_sensor.h"
29 #include "sn9c102_devtable.h"
30
31
32 static int pas202bcb_init(struct sn9c102_device* cam)
33 {
34 int err = 0;
35
36 switch (sn9c102_get_bridge(cam)) {
37 case BRIDGE_SN9C101:
38 case BRIDGE_SN9C102:
39 err = sn9c102_write_const_regs(cam, {0x00, 0x10}, {0x00, 0x11},
40 {0x00, 0x14}, {0x20, 0x17},
41 {0x30, 0x19}, {0x09, 0x18});
42 break;
43 case BRIDGE_SN9C103:
44 err = sn9c102_write_const_regs(cam, {0x00, 0x02}, {0x00, 0x03},
45 {0x1a, 0x04}, {0x20, 0x05},
46 {0x20, 0x06}, {0x20, 0x07},
47 {0x00, 0x10}, {0x00, 0x11},
48 {0x00, 0x14}, {0x20, 0x17},
49 {0x30, 0x19}, {0x09, 0x18},
50 {0x02, 0x1c}, {0x03, 0x1d},
51 {0x0f, 0x1e}, {0x0c, 0x1f},
52 {0x00, 0x20}, {0x10, 0x21},
53 {0x20, 0x22}, {0x30, 0x23},
54 {0x40, 0x24}, {0x50, 0x25},
55 {0x60, 0x26}, {0x70, 0x27},
56 {0x80, 0x28}, {0x90, 0x29},
57 {0xa0, 0x2a}, {0xb0, 0x2b},
58 {0xc0, 0x2c}, {0xd0, 0x2d},
59 {0xe0, 0x2e}, {0xf0, 0x2f},
60 {0xff, 0x30});
61 break;
62 default:
63 break;
64 }
65
66 err += sn9c102_i2c_write(cam, 0x02, 0x14);
67 err += sn9c102_i2c_write(cam, 0x03, 0x40);
68 err += sn9c102_i2c_write(cam, 0x0d, 0x2c);
69 err += sn9c102_i2c_write(cam, 0x0e, 0x01);
70 err += sn9c102_i2c_write(cam, 0x0f, 0xa9);
71 err += sn9c102_i2c_write(cam, 0x10, 0x08);
72 err += sn9c102_i2c_write(cam, 0x13, 0x63);
73 err += sn9c102_i2c_write(cam, 0x15, 0x70);
74 err += sn9c102_i2c_write(cam, 0x11, 0x01);
75
76 msleep(400);
77
78 return err;
79 }
80
81
82 static int pas202bcb_get_ctrl(struct sn9c102_device* cam,
83 struct v4l2_control* ctrl)
84 {
85 switch (ctrl->id) {
86 case V4L2_CID_EXPOSURE:
87 {
88 int r1 = sn9c102_i2c_read(cam, 0x04),
89 r2 = sn9c102_i2c_read(cam, 0x05);
90 if (r1 < 0 || r2 < 0)
91 return -EIO;
92 ctrl->value = (r1 << 6) | (r2 & 0x3f);
93 }
94 return 0;
95 case V4L2_CID_RED_BALANCE:
96 if ((ctrl->value = sn9c102_i2c_read(cam, 0x09)) < 0)
97 return -EIO;
98 ctrl->value &= 0x0f;
99 return 0;
100 case V4L2_CID_BLUE_BALANCE:
101 if ((ctrl->value = sn9c102_i2c_read(cam, 0x07)) < 0)
102 return -EIO;
103 ctrl->value &= 0x0f;
104 return 0;
105 case V4L2_CID_GAIN:
106 if ((ctrl->value = sn9c102_i2c_read(cam, 0x10)) < 0)
107 return -EIO;
108 ctrl->value &= 0x1f;
109 return 0;
110 case SN9C102_V4L2_CID_GREEN_BALANCE:
111 if ((ctrl->value = sn9c102_i2c_read(cam, 0x08)) < 0)
112 return -EIO;
113 ctrl->value &= 0x0f;
114 return 0;
115 case SN9C102_V4L2_CID_DAC_MAGNITUDE:
116 if ((ctrl->value = sn9c102_i2c_read(cam, 0x0c)) < 0)
117 return -EIO;
118 return 0;
119 default:
120 return -EINVAL;
121 }
122 }
123
124
125 static int pas202bcb_set_pix_format(struct sn9c102_device* cam,
126 const struct v4l2_pix_format* pix)
127 {
128 int err = 0;
129
130 if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X)
131 err += sn9c102_write_reg(cam, 0x28, 0x17);
132 else
133 err += sn9c102_write_reg(cam, 0x20, 0x17);
134
135 return err;
136 }
137
138
139 static int pas202bcb_set_ctrl(struct sn9c102_device* cam,
140 const struct v4l2_control* ctrl)
141 {
142 int err = 0;
143
144 switch (ctrl->id) {
145 case V4L2_CID_EXPOSURE:
146 err += sn9c102_i2c_write(cam, 0x04, ctrl->value >> 6);
147 err += sn9c102_i2c_write(cam, 0x05, ctrl->value & 0x3f);
148 break;
149 case V4L2_CID_RED_BALANCE:
150 err += sn9c102_i2c_write(cam, 0x09, ctrl->value);
151 break;
152 case V4L2_CID_BLUE_BALANCE:
153 err += sn9c102_i2c_write(cam, 0x07, ctrl->value);
154 break;
155 case V4L2_CID_GAIN:
156 err += sn9c102_i2c_write(cam, 0x10, ctrl->value);
157 break;
158 case SN9C102_V4L2_CID_GREEN_BALANCE:
159 err += sn9c102_i2c_write(cam, 0x08, ctrl->value);
160 break;
161 case SN9C102_V4L2_CID_DAC_MAGNITUDE:
162 err += sn9c102_i2c_write(cam, 0x0c, ctrl->value);
163 break;
164 default:
165 return -EINVAL;
166 }
167 err += sn9c102_i2c_write(cam, 0x11, 0x01);
168
169 return err ? -EIO : 0;
170 }
171
172
173 static int pas202bcb_set_crop(struct sn9c102_device* cam,
174 const struct v4l2_rect* rect)
175 {
176 struct sn9c102_sensor* s = sn9c102_get_sensor(cam);
177 int err = 0;
178 u8 h_start = 0,
179 v_start = (u8)(rect->top - s->cropcap.bounds.top) + 3;
180
181 switch (sn9c102_get_bridge(cam)) {
182 case BRIDGE_SN9C101:
183 case BRIDGE_SN9C102:
184 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 4;
185 break;
186 case BRIDGE_SN9C103:
187 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 3;
188 break;
189 default:
190 break;
191 }
192
193 err += sn9c102_write_reg(cam, h_start, 0x12);
194 err += sn9c102_write_reg(cam, v_start, 0x13);
195
196 return err;
197 }
198
199
200 static const struct sn9c102_sensor pas202bcb = {
201 .name = "PAS202BCB",
202 .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
203 .supported_bridge = BRIDGE_SN9C101 | BRIDGE_SN9C102 | BRIDGE_SN9C103,
204 .sysfs_ops = SN9C102_I2C_READ | SN9C102_I2C_WRITE,
205 .frequency = SN9C102_I2C_400KHZ | SN9C102_I2C_100KHZ,
206 .interface = SN9C102_I2C_2WIRES,
207 .i2c_slave_id = 0x40,
208 .init = &pas202bcb_init,
209 .qctrl = {
210 {
211 .id = V4L2_CID_EXPOSURE,
212 .type = V4L2_CTRL_TYPE_INTEGER,
213 .name = "exposure",
214 .minimum = 0x01e5,
215 .maximum = 0x3fff,
216 .step = 0x0001,
217 .default_value = 0x01e5,
218 .flags = 0,
219 },
220 {
221 .id = V4L2_CID_GAIN,
222 .type = V4L2_CTRL_TYPE_INTEGER,
223 .name = "global gain",
224 .minimum = 0x00,
225 .maximum = 0x1f,
226 .step = 0x01,
227 .default_value = 0x0b,
228 .flags = 0,
229 },
230 {
231 .id = V4L2_CID_RED_BALANCE,
232 .type = V4L2_CTRL_TYPE_INTEGER,
233 .name = "red balance",
234 .minimum = 0x00,
235 .maximum = 0x0f,
236 .step = 0x01,
237 .default_value = 0x00,
238 .flags = 0,
239 },
240 {
241 .id = V4L2_CID_BLUE_BALANCE,
242 .type = V4L2_CTRL_TYPE_INTEGER,
243 .name = "blue balance",
244 .minimum = 0x00,
245 .maximum = 0x0f,
246 .step = 0x01,
247 .default_value = 0x05,
248 .flags = 0,
249 },
250 {
251 .id = SN9C102_V4L2_CID_GREEN_BALANCE,
252 .type = V4L2_CTRL_TYPE_INTEGER,
253 .name = "green balance",
254 .minimum = 0x00,
255 .maximum = 0x0f,
256 .step = 0x01,
257 .default_value = 0x00,
258 .flags = 0,
259 },
260 {
261 .id = SN9C102_V4L2_CID_DAC_MAGNITUDE,
262 .type = V4L2_CTRL_TYPE_INTEGER,
263 .name = "DAC magnitude",
264 .minimum = 0x00,
265 .maximum = 0xff,
266 .step = 0x01,
267 .default_value = 0x04,
268 .flags = 0,
269 },
270 },
271 .get_ctrl = &pas202bcb_get_ctrl,
272 .set_ctrl = &pas202bcb_set_ctrl,
273 .cropcap = {
274 .bounds = {
275 .left = 0,
276 .top = 0,
277 .width = 640,
278 .height = 480,
279 },
280 .defrect = {
281 .left = 0,
282 .top = 0,
283 .width = 640,
284 .height = 480,
285 },
286 },
287 .set_crop = &pas202bcb_set_crop,
288 .pix_format = {
289 .width = 640,
290 .height = 480,
291 .pixelformat = V4L2_PIX_FMT_SBGGR8,
292 .priv = 8,
293 },
294 .set_pix_format = &pas202bcb_set_pix_format
295 };
296
297
298 int sn9c102_probe_pas202bcb(struct sn9c102_device* cam)
299 {
300 int r0 = 0, r1 = 0, err = 0;
301 unsigned int pid = 0;
302
303 /*
304 * Minimal initialization to enable the I2C communication
305 * NOTE: do NOT change the values!
306 */
307 switch (sn9c102_get_bridge(cam)) {
308 case BRIDGE_SN9C101:
309 case BRIDGE_SN9C102:
310 err = sn9c102_write_const_regs(cam,
311 {0x01, 0x01}, /* power down */
312 {0x40, 0x01}, /* power on */
313 {0x28, 0x17});/* clock 24 MHz */
314 break;
315 case BRIDGE_SN9C103: /* do _not_ change anything! */
316 err = sn9c102_write_const_regs(cam, {0x09, 0x01}, {0x44, 0x01},
317 {0x44, 0x02}, {0x29, 0x17});
318 break;
319 default:
320 break;
321 }
322
323 r0 = sn9c102_i2c_try_read(cam, &pas202bcb, 0x00);
324 r1 = sn9c102_i2c_try_read(cam, &pas202bcb, 0x01);
325
326 if (err || r0 < 0 || r1 < 0)
327 return -EIO;
328
329 pid = (r0 << 4) | ((r1 & 0xf0) >> 4);
330 if (pid != 0x017)
331 return -ENODEV;
332
333 sn9c102_attach_sensor(cam, &pas202bcb);
334
335 return 0;
336 }