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 struct sn9c102_sensor pas202bcb;
  32
  33
  34 static int pas202bcb_init(struct sn9c102_device* cam)
  35 {
  36         int err = 0;
  37
  38         switch (sn9c102_get_bridge(cam)) {
  39         case BRIDGE_SN9C101:
  40         case BRIDGE_SN9C102:
  41         err += sn9c102_write_reg(cam, 0x00, 0x10);
  42         err += sn9c102_write_reg(cam, 0x00, 0x11);
  43         err += sn9c102_write_reg(cam, 0x00, 0x14);
  44         err += sn9c102_write_reg(cam, 0x20, 0x17);
  45         err += sn9c102_write_reg(cam, 0x30, 0x19);
  46         err += sn9c102_write_reg(cam, 0x09, 0x18);
  47                 break;
  48         case BRIDGE_SN9C103:
  49                 err += sn9c102_write_reg(cam, 0x00, 0x02);
  50                 err += sn9c102_write_reg(cam, 0x00, 0x03);
  51                 err += sn9c102_write_reg(cam, 0x1a, 0x04);
  52                 err += sn9c102_write_reg(cam, 0x20, 0x05);
  53                 err += sn9c102_write_reg(cam, 0x20, 0x06);
  54                 err += sn9c102_write_reg(cam, 0x20, 0x07);
  55                 err += sn9c102_write_reg(cam, 0x00, 0x10);
  56                 err += sn9c102_write_reg(cam, 0x00, 0x11);
  57                 err += sn9c102_write_reg(cam, 0x00, 0x14);
  58                 err += sn9c102_write_reg(cam, 0x20, 0x17);
  59                 err += sn9c102_write_reg(cam, 0x30, 0x19);
  60                 err += sn9c102_write_reg(cam, 0x09, 0x18);
  61                 err += sn9c102_write_reg(cam, 0x02, 0x1c);
  62                 err += sn9c102_write_reg(cam, 0x03, 0x1d);
  63                 err += sn9c102_write_reg(cam, 0x0f, 0x1e);
  64                 err += sn9c102_write_reg(cam, 0x0c, 0x1f);
  65                 err += sn9c102_write_reg(cam, 0x00, 0x20);
  66                 err += sn9c102_write_reg(cam, 0x10, 0x21);
  67                 err += sn9c102_write_reg(cam, 0x20, 0x22);
  68                 err += sn9c102_write_reg(cam, 0x30, 0x23);
  69                 err += sn9c102_write_reg(cam, 0x40, 0x24);
  70                 err += sn9c102_write_reg(cam, 0x50, 0x25);
  71                 err += sn9c102_write_reg(cam, 0x60, 0x26);
  72                 err += sn9c102_write_reg(cam, 0x70, 0x27);
  73                 err += sn9c102_write_reg(cam, 0x80, 0x28);
  74                 err += sn9c102_write_reg(cam, 0x90, 0x29);
  75                 err += sn9c102_write_reg(cam, 0xa0, 0x2a);
  76                 err += sn9c102_write_reg(cam, 0xb0, 0x2b);
  77                 err += sn9c102_write_reg(cam, 0xc0, 0x2c);
  78                 err += sn9c102_write_reg(cam, 0xd0, 0x2d);
  79                 err += sn9c102_write_reg(cam, 0xe0, 0x2e);
  80                 err += sn9c102_write_reg(cam, 0xf0, 0x2f);
  81                 err += sn9c102_write_reg(cam, 0xff, 0x30);
  82                 break;
  83         default:
  84                 break;
  85         }
  86
  87         err += sn9c102_i2c_write(cam, 0x02, 0x14);
  88         err += sn9c102_i2c_write(cam, 0x03, 0x40);
  89         err += sn9c102_i2c_write(cam, 0x0d, 0x2c);
  90         err += sn9c102_i2c_write(cam, 0x0e, 0x01);
  91         err += sn9c102_i2c_write(cam, 0x0f, 0xa9);
  92         err += sn9c102_i2c_write(cam, 0x10, 0x08);
  93         err += sn9c102_i2c_write(cam, 0x13, 0x63);
  94         err += sn9c102_i2c_write(cam, 0x15, 0x70);
  95         err += sn9c102_i2c_write(cam, 0x11, 0x01);
  96
  97         msleep(400);
  98
  99         return err;
 100 }
 101
 102
 103 static int pas202bcb_get_ctrl(struct sn9c102_device* cam,
 104                               struct v4l2_control* ctrl)
 105 {
 106         switch (ctrl->id) {
 107         case V4L2_CID_EXPOSURE:
 108                 {
 109                         int r1 = sn9c102_i2c_read(cam, 0x04),
 110                             r2 = sn9c102_i2c_read(cam, 0x05);
 111                         if (r1 < 0 || r2 < 0)
 112                                 return -EIO;
 113                         ctrl->value = (r1 << 6) | (r2 & 0x3f);
 114                 }
 115                 return 0;
 116         case V4L2_CID_RED_BALANCE:
 117                 if ((ctrl->value = sn9c102_i2c_read(cam, 0x09)) < 0)
 118                         return -EIO;
 119                 ctrl->value &= 0x0f;
 120                 return 0;
 121         case V4L2_CID_BLUE_BALANCE:
 122                 if ((ctrl->value = sn9c102_i2c_read(cam, 0x07)) < 0)
 123                         return -EIO;
 124                 ctrl->value &= 0x0f;
 125                 return 0;
 126         case V4L2_CID_GAIN:
 127                 if ((ctrl->value = sn9c102_i2c_read(cam, 0x10)) < 0)
 128                         return -EIO;
 129                 ctrl->value &= 0x1f;
 130                 return 0;
 131         case SN9C102_V4L2_CID_GREEN_BALANCE:
 132                 if ((ctrl->value = sn9c102_i2c_read(cam, 0x08)) < 0)
 133                         return -EIO;
 134                 ctrl->value &= 0x0f;
 135                 return 0;
 136         case SN9C102_V4L2_CID_DAC_MAGNITUDE:
 137                 if ((ctrl->value = sn9c102_i2c_read(cam, 0x0c)) < 0)
 138                         return -EIO;
 139                 return 0;
 140         default:
 141                 return -EINVAL;
 142         }
 143 }
 144
 145
 146 static int pas202bcb_set_pix_format(struct sn9c102_device* cam,
 147                                     const struct v4l2_pix_format* pix)
 148 {
 149         int err = 0;
 150
 151         if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X)
 152                 err += sn9c102_write_reg(cam, 0x28, 0x17);
 153         else
 154                 err += sn9c102_write_reg(cam, 0x20, 0x17);
 155
 156         return err;
 157 }
 158
 159
 160 static int pas202bcb_set_ctrl(struct sn9c102_device* cam,
 161                               const struct v4l2_control* ctrl)
 162 {
 163         int err = 0;
 164
 165         switch (ctrl->id) {
 166         case V4L2_CID_EXPOSURE:
 167                 err += sn9c102_i2c_write(cam, 0x04, ctrl->value >> 6);
 168                 err += sn9c102_i2c_write(cam, 0x05, ctrl->value & 0x3f);
 169                 break;
 170         case V4L2_CID_RED_BALANCE:
 171                 err += sn9c102_i2c_write(cam, 0x09, ctrl->value);
 172                 break;
 173         case V4L2_CID_BLUE_BALANCE:
 174                 err += sn9c102_i2c_write(cam, 0x07, ctrl->value);
 175                 break;
 176         case V4L2_CID_GAIN:
 177                 err += sn9c102_i2c_write(cam, 0x10, ctrl->value);
 178                 break;
 179         case SN9C102_V4L2_CID_GREEN_BALANCE:
 180                 err += sn9c102_i2c_write(cam, 0x08, ctrl->value);
 181                 break;
 182         case SN9C102_V4L2_CID_DAC_MAGNITUDE:
 183                 err += sn9c102_i2c_write(cam, 0x0c, ctrl->value);
 184                 break;
 185         default:
 186                 return -EINVAL;
 187         }
 188         err += sn9c102_i2c_write(cam, 0x11, 0x01);
 189
 190         return err ? -EIO : 0;
 191 }
 192
 193
 194 static int pas202bcb_set_crop(struct sn9c102_device* cam,
 195                               const struct v4l2_rect* rect)
 196 {
 197         struct sn9c102_sensor* s = sn9c102_get_sensor(cam);
 198         int err = 0;
 199         u8 h_start = 0,
 200            v_start = (u8)(rect->top - s->cropcap.bounds.top) + 3;
 201
 202         switch (sn9c102_get_bridge(cam)) {
 203         case BRIDGE_SN9C101:
 204         case BRIDGE_SN9C102:
 205                 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 4;
 206                 break;
 207         case BRIDGE_SN9C103:
 208                 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 3;
 209                 break;
 210         default:
 211                 break;
 212         }
 213
 214         err += sn9c102_write_reg(cam, h_start, 0x12);
 215         err += sn9c102_write_reg(cam, v_start, 0x13);
 216
 217         return err;
 218 }
 219
 220
 221 static struct sn9c102_sensor pas202bcb = {
 222         .name = "PAS202BCB",
 223         .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
 224         .supported_bridge = BRIDGE_SN9C101 | BRIDGE_SN9C102 | BRIDGE_SN9C103,
 225         .sysfs_ops = SN9C102_I2C_READ | SN9C102_I2C_WRITE,
 226         .frequency = SN9C102_I2C_400KHZ | SN9C102_I2C_100KHZ,
 227         .interface = SN9C102_I2C_2WIRES,
 228         .i2c_slave_id = 0x40,
 229         .init = &pas202bcb_init,
 230         .qctrl = {
 231                 {
 232                         .id = V4L2_CID_EXPOSURE,
 233                         .type = V4L2_CTRL_TYPE_INTEGER,
 234                         .name = "exposure",
 235                         .minimum = 0x01e5,
 236                         .maximum = 0x3fff,
 237                         .step = 0x0001,
 238                         .default_value = 0x01e5,
 239                         .flags = 0,
 240                 },
 241                 {
 242                         .id = V4L2_CID_GAIN,
 243                         .type = V4L2_CTRL_TYPE_INTEGER,
 244                         .name = "global gain",
 245                         .minimum = 0x00,
 246                         .maximum = 0x1f,
 247                         .step = 0x01,
 248                         .default_value = 0x0b,
 249                         .flags = 0,
 250                 },
 251                 {
 252                         .id = V4L2_CID_RED_BALANCE,
 253                         .type = V4L2_CTRL_TYPE_INTEGER,
 254                         .name = "red balance",
 255                         .minimum = 0x00,
 256                         .maximum = 0x0f,
 257                         .step = 0x01,
 258                         .default_value = 0x00,
 259                         .flags = 0,
 260                 },
 261                 {
 262                         .id = V4L2_CID_BLUE_BALANCE,
 263                         .type = V4L2_CTRL_TYPE_INTEGER,
 264                         .name = "blue balance",
 265                         .minimum = 0x00,
 266                         .maximum = 0x0f,
 267                         .step = 0x01,
 268                         .default_value = 0x05,
 269                         .flags = 0,
 270                 },
 271                 {
 272                         .id = SN9C102_V4L2_CID_GREEN_BALANCE,
 273                         .type = V4L2_CTRL_TYPE_INTEGER,
 274                         .name = "green balance",
 275                         .minimum = 0x00,
 276                         .maximum = 0x0f,
 277                         .step = 0x01,
 278                         .default_value = 0x00,
 279                         .flags = 0,
 280                 },
 281                 {
 282                         .id = SN9C102_V4L2_CID_DAC_MAGNITUDE,
 283                         .type = V4L2_CTRL_TYPE_INTEGER,
 284                         .name = "DAC magnitude",
 285                         .minimum = 0x00,
 286                         .maximum = 0xff,
 287                         .step = 0x01,
 288                         .default_value = 0x04,
 289                         .flags = 0,
 290                 },
 291         },
 292         .get_ctrl = &pas202bcb_get_ctrl,
 293         .set_ctrl = &pas202bcb_set_ctrl,
 294         .cropcap = {
 295                 .bounds = {
 296                         .left = 0,
 297                         .top = 0,
 298                         .width = 640,
 299                         .height = 480,
 300                 },
 301                 .defrect = {
 302                         .left = 0,
 303                         .top = 0,
 304                         .width = 640,
 305                         .height = 480,
 306                 },
 307         },
 308         .set_crop = &pas202bcb_set_crop,
 309         .pix_format = {
 310                 .width = 640,
 311                 .height = 480,
 312                 .pixelformat = V4L2_PIX_FMT_SBGGR8,
 313                 .priv = 8,
 314         },
 315         .set_pix_format = &pas202bcb_set_pix_format
 316 };
 317
 318
 319 int sn9c102_probe_pas202bcb(struct sn9c102_device* cam)
 320 {
 321         int r0 = 0, r1 = 0, err = 0;
 322         unsigned int pid = 0;
 323
 324         /*
 325          *  Minimal initialization to enable the I2C communication
 326          *  NOTE: do NOT change the values!
 327          */
 328         switch (sn9c102_get_bridge(cam)) {
 329         case BRIDGE_SN9C101:
 330         case BRIDGE_SN9C102:
 331                 err += sn9c102_write_reg(cam, 0x01, 0x01); /* power down */
 332                 err += sn9c102_write_reg(cam, 0x40, 0x01); /* power on */
 333                 err += sn9c102_write_reg(cam, 0x28, 0x17); /* clock 24 MHz */
 334                 break;
 335         case BRIDGE_SN9C103: /* do _not_ change anything! */
 336                 err += sn9c102_write_reg(cam, 0x09, 0x01);
 337                 err += sn9c102_write_reg(cam, 0x44, 0x01);
 338                 err += sn9c102_write_reg(cam, 0x44, 0x02);
 339                 err += sn9c102_write_reg(cam, 0x29, 0x17);
 340                 break;
 341         default:
 342                 break;
 343         }
 344
 345         r0 = sn9c102_i2c_try_read(cam, &pas202bcb, 0x00);
 346         r1 = sn9c102_i2c_try_read(cam, &pas202bcb, 0x01);
 347
 348         if (err || r0 < 0 || r1 < 0)
 349                 return -EIO;
 350
 351         pid = (r0 << 4) | ((r1 & 0xf0) >> 4);
 352         if (pid != 0x017)
 353                 return -ENODEV;
 354
 355         sn9c102_attach_sensor(cam, &pas202bcb);
 356
 357         return 0;
 358 }