LXR linux/drivers/media/video/sn9c102/sn9c102

   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
  26static 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
  55static 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
 122static 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
 192static 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
 207static 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
 227static 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
 334int 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}
 353