Merge branch 'linus' into x86/cleanups
[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 #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 }