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Merge branch 'for-linus' of git://git.infradead.org/users/sameo/mfd-2.6
[linux-btrfs-devel.git] / drivers / media / video / sn9c102 / sn9c102_mi0343.c
blob1f5b09bec89c7ec2f729e18c57848f965fa4ef76
1 /***************************************************************************
2 * Plug-in for MI-0343 image sensor connected to the SN9C1xx PC Camera *
3 * Controllers *
4 * *
5 * Copyright (C) 2004-2007 by Luca Risolia <luca.risolia@studio.unibo.it> *
6 * *
7 * This program is free software; you can redistribute it and/or modify *
8 * it under the terms of the GNU General Public License as published by *
9 * the Free Software Foundation; either version 2 of the License, or *
10 * (at your option) any later version. *
11 * *
12 * This program is distributed in the hope that it will be useful, *
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
15 * GNU General Public License for more details. *
16 * *
17 * You should have received a copy of the GNU General Public License *
18 * along with this program; if not, write to the Free Software *
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. *
20 ***************************************************************************/
21
22 #include "sn9c102_sensor.h"
23 #include "sn9c102_devtable.h"
24
25
26 static int mi0343_init(struct sn9c102_device* cam)
27 {
28 struct sn9c102_sensor* s = sn9c102_get_sensor(cam);
29 int err = 0;
30
31 err = sn9c102_write_const_regs(cam, {0x00, 0x10}, {0x00, 0x11},
32 {0x0a, 0x14}, {0x40, 0x01},
33 {0x20, 0x17}, {0x07, 0x18},
34 {0xa0, 0x19});
35
36 err += sn9c102_i2c_try_raw_write(cam, s, 4, s->i2c_slave_id, 0x0d,
37 0x00, 0x01, 0, 0);
38 err += sn9c102_i2c_try_raw_write(cam, s, 4, s->i2c_slave_id, 0x0d,
39 0x00, 0x00, 0, 0);
40 err += sn9c102_i2c_try_raw_write(cam, s, 4, s->i2c_slave_id, 0x03,
41 0x01, 0xe1, 0, 0);
42 err += sn9c102_i2c_try_raw_write(cam, s, 4, s->i2c_slave_id, 0x04,
43 0x02, 0x81, 0, 0);
44 err += sn9c102_i2c_try_raw_write(cam, s, 4, s->i2c_slave_id, 0x05,
45 0x00, 0x17, 0, 0);
46 err += sn9c102_i2c_try_raw_write(cam, s, 4, s->i2c_slave_id, 0x06,
47 0x00, 0x11, 0, 0);
48 err += sn9c102_i2c_try_raw_write(cam, s, 4, s->i2c_slave_id, 0x62,
49 0x04, 0x9a, 0, 0);
50
51 return err;
52 }
53
54
55 static int mi0343_get_ctrl(struct sn9c102_device* cam,
56 struct v4l2_control* ctrl)
57 {
58 struct sn9c102_sensor* s = sn9c102_get_sensor(cam);
59 u8 data[2];
60
61 switch (ctrl->id) {
62 case V4L2_CID_EXPOSURE:
63 if (sn9c102_i2c_try_raw_read(cam, s, s->i2c_slave_id, 0x09, 2,
64 data) < 0)
65 return -EIO;
66 ctrl->value = data[0];
67 return 0;
68 case V4L2_CID_GAIN:
69 if (sn9c102_i2c_try_raw_read(cam, s, s->i2c_slave_id, 0x35, 2,
70 data) < 0)
71 return -EIO;
72 break;
73 case V4L2_CID_HFLIP:
74 if (sn9c102_i2c_try_raw_read(cam, s, s->i2c_slave_id, 0x20, 2,
75 data) < 0)
76 return -EIO;
77 ctrl->value = data[1] & 0x20 ? 1 : 0;
78 return 0;
79 case V4L2_CID_VFLIP:
80 if (sn9c102_i2c_try_raw_read(cam, s, s->i2c_slave_id, 0x20, 2,
81 data) < 0)
82 return -EIO;
83 ctrl->value = data[1] & 0x80 ? 1 : 0;
84 return 0;
85 case V4L2_CID_RED_BALANCE:
86 if (sn9c102_i2c_try_raw_read(cam, s, s->i2c_slave_id, 0x2d, 2,
87 data) < 0)
88 return -EIO;
89 break;
90 case V4L2_CID_BLUE_BALANCE:
91 if (sn9c102_i2c_try_raw_read(cam, s, s->i2c_slave_id, 0x2c, 2,
92 data) < 0)
93 return -EIO;
94 break;
95 case SN9C102_V4L2_CID_GREEN_BALANCE:
96 if (sn9c102_i2c_try_raw_read(cam, s, s->i2c_slave_id, 0x2e, 2,
97 data) < 0)
98 return -EIO;
99 break;
100 default:
101 return -EINVAL;
102 }
103
104 switch (ctrl->id) {
105 case V4L2_CID_GAIN:
106 case V4L2_CID_RED_BALANCE:
107 case V4L2_CID_BLUE_BALANCE:
108 case SN9C102_V4L2_CID_GREEN_BALANCE:
109 ctrl->value = data[1] | (data[0] << 8);
110 if (ctrl->value >= 0x10 && ctrl->value <= 0x3f)
111 ctrl->value -= 0x10;
112 else if (ctrl->value >= 0x60 && ctrl->value <= 0x7f)
113 ctrl->value -= 0x60;
114 else if (ctrl->value >= 0xe0 && ctrl->value <= 0xff)
115 ctrl->value -= 0xe0;
116 }
117
118 return 0;
119 }
120
121
122 static int mi0343_set_ctrl(struct sn9c102_device* cam,
123 const struct v4l2_control* ctrl)
124 {
125 struct sn9c102_sensor* s = sn9c102_get_sensor(cam);
126 u16 reg = 0;
127 int err = 0;
128
129 switch (ctrl->id) {
130 case V4L2_CID_GAIN:
131 case V4L2_CID_RED_BALANCE:
132 case V4L2_CID_BLUE_BALANCE:
133 case SN9C102_V4L2_CID_GREEN_BALANCE:
134 if (ctrl->value <= (0x3f-0x10))
135 reg = 0x10 + ctrl->value;
136 else if (ctrl->value <= ((0x3f-0x10) + (0x7f-0x60)))
137 reg = 0x60 + (ctrl->value - (0x3f-0x10));
138 else
139 reg = 0xe0 + (ctrl->value - (0x3f-0x10) - (0x7f-0x60));
140 break;
141 }
142
143 switch (ctrl->id) {
144 case V4L2_CID_EXPOSURE:
145 err += sn9c102_i2c_try_raw_write(cam, s, 4, s->i2c_slave_id,
146 0x09, ctrl->value, 0x00,
147 0, 0);
148 break;
149 case V4L2_CID_GAIN:
150 err += sn9c102_i2c_try_raw_write(cam, s, 4, s->i2c_slave_id,
151 0x35, reg >> 8, reg & 0xff,
152 0, 0);
153 break;
154 case V4L2_CID_HFLIP:
155 err += sn9c102_i2c_try_raw_write(cam, s, 4, s->i2c_slave_id,
156 0x20, ctrl->value ? 0x40:0x00,
157 ctrl->value ? 0x20:0x00,
158 0, 0);
159 break;
160 case V4L2_CID_VFLIP:
161 err += sn9c102_i2c_try_raw_write(cam, s, 4, s->i2c_slave_id,
162 0x20, ctrl->value ? 0x80:0x00,
163 ctrl->value ? 0x80:0x00,
164 0, 0);
165 break;
166 case V4L2_CID_RED_BALANCE:
167 err += sn9c102_i2c_try_raw_write(cam, s, 4, s->i2c_slave_id,
168 0x2d, reg >> 8, reg & 0xff,
169 0, 0);
170 break;
171 case V4L2_CID_BLUE_BALANCE:
172 err += sn9c102_i2c_try_raw_write(cam, s, 4, s->i2c_slave_id,
173 0x2c, reg >> 8, reg & 0xff,
174 0, 0);
175 break;
176 case SN9C102_V4L2_CID_GREEN_BALANCE:
177 err += sn9c102_i2c_try_raw_write(cam, s, 4, s->i2c_slave_id,
178 0x2b, reg >> 8, reg & 0xff,
179 0, 0);
180 err += sn9c102_i2c_try_raw_write(cam, s, 4, s->i2c_slave_id,
181 0x2e, reg >> 8, reg & 0xff,
182 0, 0);
183 break;
184 default:
185 return -EINVAL;
186 }
187
188 return err ? -EIO : 0;
189 }
190
191
192 static int mi0343_set_crop(struct sn9c102_device* cam,
193 const struct v4l2_rect* rect)
194 {
195 struct sn9c102_sensor* s = sn9c102_get_sensor(cam);
196 int err = 0;
197 u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 0,
198 v_start = (u8)(rect->top - s->cropcap.bounds.top) + 2;
199
200 err += sn9c102_write_reg(cam, h_start, 0x12);
201 err += sn9c102_write_reg(cam, v_start, 0x13);
202
203 return err;
204 }
205
206
207 static int mi0343_set_pix_format(struct sn9c102_device* cam,
208 const struct v4l2_pix_format* pix)
209 {
210 struct sn9c102_sensor* s = sn9c102_get_sensor(cam);
211 int err = 0;
212
213 if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X) {
214 err += sn9c102_i2c_try_raw_write(cam, s, 4, s->i2c_slave_id,
215 0x0a, 0x00, 0x03, 0, 0);
216 err += sn9c102_write_reg(cam, 0x20, 0x19);
217 } else {
218 err += sn9c102_i2c_try_raw_write(cam, s, 4, s->i2c_slave_id,
219 0x0a, 0x00, 0x05, 0, 0);
220 err += sn9c102_write_reg(cam, 0xa0, 0x19);
221 }
222
223 return err;
224 }
225
226
227 static const struct sn9c102_sensor mi0343 = {
228 .name = "MI-0343",
229 .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
230 .supported_bridge = BRIDGE_SN9C101 | BRIDGE_SN9C102,
231 .frequency = SN9C102_I2C_100KHZ,
232 .interface = SN9C102_I2C_2WIRES,
233 .i2c_slave_id = 0x5d,
234 .init = &mi0343_init,
235 .qctrl = {
236 {
237 .id = V4L2_CID_EXPOSURE,
238 .type = V4L2_CTRL_TYPE_INTEGER,
239 .name = "exposure",
240 .minimum = 0x00,
241 .maximum = 0x0f,
242 .step = 0x01,
243 .default_value = 0x06,
244 .flags = 0,
245 },
246 {
247 .id = V4L2_CID_GAIN,
248 .type = V4L2_CTRL_TYPE_INTEGER,
249 .name = "global gain",
250 .minimum = 0x00,
251 .maximum = (0x3f-0x10)+(0x7f-0x60)+(0xff-0xe0),/*0x6d*/
252 .step = 0x01,
253 .default_value = 0x00,
254 .flags = 0,
255 },
256 {
257 .id = V4L2_CID_HFLIP,
258 .type = V4L2_CTRL_TYPE_BOOLEAN,
259 .name = "horizontal mirror",
260 .minimum = 0,
261 .maximum = 1,
262 .step = 1,
263 .default_value = 0,
264 .flags = 0,
265 },
266 {
267 .id = V4L2_CID_VFLIP,
268 .type = V4L2_CTRL_TYPE_BOOLEAN,
269 .name = "vertical mirror",
270 .minimum = 0,
271 .maximum = 1,
272 .step = 1,
273 .default_value = 0,
274 .flags = 0,
275 },
276 {
277 .id = V4L2_CID_RED_BALANCE,
278 .type = V4L2_CTRL_TYPE_INTEGER,
279 .name = "red balance",
280 .minimum = 0x00,
281 .maximum = (0x3f-0x10)+(0x7f-0x60)+(0xff-0xe0),
282 .step = 0x01,
283 .default_value = 0x00,
284 .flags = 0,
285 },
286 {
287 .id = V4L2_CID_BLUE_BALANCE,
288 .type = V4L2_CTRL_TYPE_INTEGER,
289 .name = "blue balance",
290 .minimum = 0x00,
291 .maximum = (0x3f-0x10)+(0x7f-0x60)+(0xff-0xe0),
292 .step = 0x01,
293 .default_value = 0x00,
294 .flags = 0,
295 },
296 {
297 .id = SN9C102_V4L2_CID_GREEN_BALANCE,
298 .type = V4L2_CTRL_TYPE_INTEGER,
299 .name = "green balance",
300 .minimum = 0x00,
301 .maximum = ((0x3f-0x10)+(0x7f-0x60)+(0xff-0xe0)),
302 .step = 0x01,
303 .default_value = 0x00,
304 .flags = 0,
305 },
306 },
307 .get_ctrl = &mi0343_get_ctrl,
308 .set_ctrl = &mi0343_set_ctrl,
309 .cropcap = {
310 .bounds = {
311 .left = 0,
312 .top = 0,
313 .width = 640,
314 .height = 480,
315 },
316 .defrect = {
317 .left = 0,
318 .top = 0,
319 .width = 640,
320 .height = 480,
321 },
322 },
323 .set_crop = &mi0343_set_crop,
324 .pix_format = {
325 .width = 640,
326 .height = 480,
327 .pixelformat = V4L2_PIX_FMT_SBGGR8,
328 .priv = 8,
329 },
330 .set_pix_format = &mi0343_set_pix_format
331 };
332
333
334 int sn9c102_probe_mi0343(struct sn9c102_device* cam)
335 {
336 u8 data[2];
337
338 if (sn9c102_write_const_regs(cam, {0x01, 0x01}, {0x00, 0x01},
339 {0x28, 0x17}))
340 return -EIO;
341
342 if (sn9c102_i2c_try_raw_read(cam, &mi0343, mi0343.i2c_slave_id, 0x00,
343 2, data) < 0)
344 return -EIO;
345
346 if (data[1] != 0x42 || data[0] != 0xe3)
347 return -ENODEV;
348
349 sn9c102_attach_sensor(cam, &mi0343);
350
351 return 0;
352 }
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