Merge branch 'for-2.6.24' of master.kernel.org:/pub/scm/linux/kernel/git/jwboyer...
[linux-2.6] / 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  *                       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
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 }