SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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_reg(cam, 0x00, 0x10);
  39                 err += sn9c102_write_reg(cam, 0x00, 0x11);
  40                 err += sn9c102_write_reg(cam, 0x00, 0x14);
  41                 err += sn9c102_write_reg(cam, 0x20, 0x17);
  42                 err += sn9c102_write_reg(cam, 0x30, 0x19);
  43                 err += sn9c102_write_reg(cam, 0x09, 0x18);
  44                 break;
  45         case BRIDGE_SN9C103:
  46                 err += sn9c102_write_reg(cam, 0x00, 0x02);
  47                 err += sn9c102_write_reg(cam, 0x00, 0x03);
  48                 err += sn9c102_write_reg(cam, 0x1a, 0x04);
  49                 err += sn9c102_write_reg(cam, 0x20, 0x05);
  50                 err += sn9c102_write_reg(cam, 0x20, 0x06);
  51                 err += sn9c102_write_reg(cam, 0x20, 0x07);
  52                 err += sn9c102_write_reg(cam, 0x00, 0x10);
  53                 err += sn9c102_write_reg(cam, 0x00, 0x11);
  54                 err += sn9c102_write_reg(cam, 0x00, 0x14);
  55                 err += sn9c102_write_reg(cam, 0x20, 0x17);
  56                 err += sn9c102_write_reg(cam, 0x30, 0x19);
  57                 err += sn9c102_write_reg(cam, 0x09, 0x18);
  58                 err += sn9c102_write_reg(cam, 0x02, 0x1c);
  59                 err += sn9c102_write_reg(cam, 0x03, 0x1d);
  60                 err += sn9c102_write_reg(cam, 0x0f, 0x1e);
  61                 err += sn9c102_write_reg(cam, 0x0c, 0x1f);
  62                 err += sn9c102_write_reg(cam, 0x00, 0x20);
  63                 err += sn9c102_write_reg(cam, 0x10, 0x21);
  64                 err += sn9c102_write_reg(cam, 0x20, 0x22);
  65                 err += sn9c102_write_reg(cam, 0x30, 0x23);
  66                 err += sn9c102_write_reg(cam, 0x40, 0x24);
  67                 err += sn9c102_write_reg(cam, 0x50, 0x25);
  68                 err += sn9c102_write_reg(cam, 0x60, 0x26);
  69                 err += sn9c102_write_reg(cam, 0x70, 0x27);
  70                 err += sn9c102_write_reg(cam, 0x80, 0x28);
  71                 err += sn9c102_write_reg(cam, 0x90, 0x29);
  72                 err += sn9c102_write_reg(cam, 0xa0, 0x2a);
  73                 err += sn9c102_write_reg(cam, 0xb0, 0x2b);
  74                 err += sn9c102_write_reg(cam, 0xc0, 0x2c);
  75                 err += sn9c102_write_reg(cam, 0xd0, 0x2d);
  76                 err += sn9c102_write_reg(cam, 0xe0, 0x2e);
  77                 err += sn9c102_write_reg(cam, 0xf0, 0x2f);
  78                 err += sn9c102_write_reg(cam, 0xff, 0x30);
  79                 break;
  80         default:
  81                 break;
  82         }
  83
  84         err += sn9c102_i2c_write(cam, 0x02, 0x14);
  85         err += sn9c102_i2c_write(cam, 0x03, 0x40);
  86         err += sn9c102_i2c_write(cam, 0x0d, 0x2c);
  87         err += sn9c102_i2c_write(cam, 0x0e, 0x01);
  88         err += sn9c102_i2c_write(cam, 0x0f, 0xa9);
  89         err += sn9c102_i2c_write(cam, 0x10, 0x08);
  90         err += sn9c102_i2c_write(cam, 0x13, 0x63);
  91         err += sn9c102_i2c_write(cam, 0x15, 0x70);
  92         err += sn9c102_i2c_write(cam, 0x11, 0x01);
  93
  94         msleep(400);
  95
  96         return err;
  97 }
  98
  99
 100 static int pas202bcb_get_ctrl(struct sn9c102_device* cam,
 101                               struct v4l2_control* ctrl)
 102 {
 103         switch (ctrl->id) {
 104         case V4L2_CID_EXPOSURE:
 105                 {
 106                         int r1 = sn9c102_i2c_read(cam, 0x04),
 107                             r2 = sn9c102_i2c_read(cam, 0x05);
 108                         if (r1 < 0 || r2 < 0)
 109                                 return -EIO;
 110                         ctrl->value = (r1 << 6) | (r2 & 0x3f);
 111                 }
 112                 return 0;
 113         case V4L2_CID_RED_BALANCE:
 114                 if ((ctrl->value = sn9c102_i2c_read(cam, 0x09)) < 0)
 115                         return -EIO;
 116                 ctrl->value &= 0x0f;
 117                 return 0;
 118         case V4L2_CID_BLUE_BALANCE:
 119                 if ((ctrl->value = sn9c102_i2c_read(cam, 0x07)) < 0)
 120                         return -EIO;
 121                 ctrl->value &= 0x0f;
 122                 return 0;
 123         case V4L2_CID_GAIN:
 124                 if ((ctrl->value = sn9c102_i2c_read(cam, 0x10)) < 0)
 125                         return -EIO;
 126                 ctrl->value &= 0x1f;
 127                 return 0;
 128         case SN9C102_V4L2_CID_GREEN_BALANCE:
 129                 if ((ctrl->value = sn9c102_i2c_read(cam, 0x08)) < 0)
 130                         return -EIO;
 131                 ctrl->value &= 0x0f;
 132                 return 0;
 133         case SN9C102_V4L2_CID_DAC_MAGNITUDE:
 134                 if ((ctrl->value = sn9c102_i2c_read(cam, 0x0c)) < 0)
 135                         return -EIO;
 136                 return 0;
 137         default:
 138                 return -EINVAL;
 139         }
 140 }
 141
 142
 143 static int pas202bcb_set_pix_format(struct sn9c102_device* cam,
 144                                     const struct v4l2_pix_format* pix)
 145 {
 146         int err = 0;
 147
 148         if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X)
 149                 err += sn9c102_write_reg(cam, 0x28, 0x17);
 150         else
 151                 err += sn9c102_write_reg(cam, 0x20, 0x17);
 152
 153         return err;
 154 }
 155
 156
 157 static int pas202bcb_set_ctrl(struct sn9c102_device* cam,
 158                               const struct v4l2_control* ctrl)
 159 {
 160         int err = 0;
 161
 162         switch (ctrl->id) {
 163         case V4L2_CID_EXPOSURE:
 164                 err += sn9c102_i2c_write(cam, 0x04, ctrl->value >> 6);
 165                 err += sn9c102_i2c_write(cam, 0x05, ctrl->value & 0x3f);
 166                 break;
 167         case V4L2_CID_RED_BALANCE:
 168                 err += sn9c102_i2c_write(cam, 0x09, ctrl->value);
 169                 break;
 170         case V4L2_CID_BLUE_BALANCE:
 171                 err += sn9c102_i2c_write(cam, 0x07, ctrl->value);
 172                 break;
 173         case V4L2_CID_GAIN:
 174                 err += sn9c102_i2c_write(cam, 0x10, ctrl->value);
 175                 break;
 176         case SN9C102_V4L2_CID_GREEN_BALANCE:
 177                 err += sn9c102_i2c_write(cam, 0x08, ctrl->value);
 178                 break;
 179         case SN9C102_V4L2_CID_DAC_MAGNITUDE:
 180                 err += sn9c102_i2c_write(cam, 0x0c, ctrl->value);
 181                 break;
 182         default:
 183                 return -EINVAL;
 184         }
 185         err += sn9c102_i2c_write(cam, 0x11, 0x01);
 186
 187         return err ? -EIO : 0;
 188 }
 189
 190
 191 static int pas202bcb_set_crop(struct sn9c102_device* cam,
 192                               const struct v4l2_rect* rect)
 193 {
 194         struct sn9c102_sensor* s = sn9c102_get_sensor(cam);
 195         int err = 0;
 196         u8 h_start = 0,
 197            v_start = (u8)(rect->top - s->cropcap.bounds.top) + 3;
 198
 199         switch (sn9c102_get_bridge(cam)) {
 200         case BRIDGE_SN9C101:
 201         case BRIDGE_SN9C102:
 202                 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 4;
 203                 break;
 204         case BRIDGE_SN9C103:
 205                 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 3;
 206                 break;
 207         default:
 208                 break;
 209         }
 210
 211         err += sn9c102_write_reg(cam, h_start, 0x12);
 212         err += sn9c102_write_reg(cam, v_start, 0x13);
 213
 214         return err;
 215 }
 216
 217
 218 static struct sn9c102_sensor pas202bcb = {
 219         .name = "PAS202BCB",
 220         .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
 221         .supported_bridge = BRIDGE_SN9C101 | BRIDGE_SN9C102 | BRIDGE_SN9C103,
 222         .sysfs_ops = SN9C102_I2C_READ | SN9C102_I2C_WRITE,
 223         .frequency = SN9C102_I2C_400KHZ | SN9C102_I2C_100KHZ,
 224         .interface = SN9C102_I2C_2WIRES,
 225         .i2c_slave_id = 0x40,
 226         .init = &pas202bcb_init,
 227         .qctrl = {
 228                 {
 229                         .id = V4L2_CID_EXPOSURE,
 230                         .type = V4L2_CTRL_TYPE_INTEGER,
 231                         .name = "exposure",
 232                         .minimum = 0x01e5,
 233                         .maximum = 0x3fff,
 234                         .step = 0x0001,
 235                         .default_value = 0x01e5,
 236                         .flags = 0,
 237                 },
 238                 {
 239                         .id = V4L2_CID_GAIN,
 240                         .type = V4L2_CTRL_TYPE_INTEGER,
 241                         .name = "global gain",
 242                         .minimum = 0x00,
 243                         .maximum = 0x1f,
 244                         .step = 0x01,
 245                         .default_value = 0x0b,
 246                         .flags = 0,
 247                 },
 248                 {
 249                         .id = V4L2_CID_RED_BALANCE,
 250                         .type = V4L2_CTRL_TYPE_INTEGER,
 251                         .name = "red balance",
 252                         .minimum = 0x00,
 253                         .maximum = 0x0f,
 254                         .step = 0x01,
 255                         .default_value = 0x00,
 256                         .flags = 0,
 257                 },
 258                 {
 259                         .id = V4L2_CID_BLUE_BALANCE,
 260                         .type = V4L2_CTRL_TYPE_INTEGER,
 261                         .name = "blue balance",
 262                         .minimum = 0x00,
 263                         .maximum = 0x0f,
 264                         .step = 0x01,
 265                         .default_value = 0x05,
 266                         .flags = 0,
 267                 },
 268                 {
 269                         .id = SN9C102_V4L2_CID_GREEN_BALANCE,
 270                         .type = V4L2_CTRL_TYPE_INTEGER,
 271                         .name = "green balance",
 272                         .minimum = 0x00,
 273                         .maximum = 0x0f,
 274                         .step = 0x01,
 275                         .default_value = 0x00,
 276                         .flags = 0,
 277                 },
 278                 {
 279                         .id = SN9C102_V4L2_CID_DAC_MAGNITUDE,
 280                         .type = V4L2_CTRL_TYPE_INTEGER,
 281                         .name = "DAC magnitude",
 282                         .minimum = 0x00,
 283                         .maximum = 0xff,
 284                         .step = 0x01,
 285                         .default_value = 0x04,
 286                         .flags = 0,
 287                 },
 288         },
 289         .get_ctrl = &pas202bcb_get_ctrl,
 290         .set_ctrl = &pas202bcb_set_ctrl,
 291         .cropcap = {
 292                 .bounds = {
 293                         .left = 0,
 294                         .top = 0,
 295                         .width = 640,
 296                         .height = 480,
 297                 },
 298                 .defrect = {
 299                         .left = 0,
 300                         .top = 0,
 301                         .width = 640,
 302                         .height = 480,
 303                 },
 304         },
 305         .set_crop = &pas202bcb_set_crop,
 306         .pix_format = {
 307                 .width = 640,
 308                 .height = 480,
 309                 .pixelformat = V4L2_PIX_FMT_SBGGR8,
 310                 .priv = 8,
 311         },
 312         .set_pix_format = &pas202bcb_set_pix_format
 313 };
 314
 315
 316 int sn9c102_probe_pas202bcb(struct sn9c102_device* cam)
 317 {
 318         int r0 = 0, r1 = 0, err = 0;
 319         unsigned int pid = 0;
 320
 321         /*
 322          *  Minimal initialization to enable the I2C communication
 323          *  NOTE: do NOT change the values!
 324          */
 325         switch (sn9c102_get_bridge(cam)) {
 326         case BRIDGE_SN9C101:
 327         case BRIDGE_SN9C102:
 328                 err += sn9c102_write_reg(cam, 0x01, 0x01); /* power down */
 329                 err += sn9c102_write_reg(cam, 0x40, 0x01); /* power on */
 330                 err += sn9c102_write_reg(cam, 0x28, 0x17); /* clock 24 MHz */
 331                 break;
 332         case BRIDGE_SN9C103: /* do _not_ change anything! */
 333                 err += sn9c102_write_reg(cam, 0x09, 0x01);
 334                 err += sn9c102_write_reg(cam, 0x44, 0x01);
 335                 err += sn9c102_write_reg(cam, 0x44, 0x02);
 336                 err += sn9c102_write_reg(cam, 0x29, 0x17);
 337                 break;
 338         default:
 339                 break;
 340         }
 341
 342         r0 = sn9c102_i2c_try_read(cam, &pas202bcb, 0x00);
 343         r1 = sn9c102_i2c_try_read(cam, &pas202bcb, 0x01);
 344
 345         if (err || r0 < 0 || r1 < 0)
 346                 return -EIO;
 347
 348         pid = (r0 << 4) | ((r1 & 0xf0) >> 4);
 349         if (pid != 0x017)
 350                 return -ENODEV;
 351
 352         sn9c102_attach_sensor(cam, &pas202bcb);
 353
 354         return 0;
 355 }