git.oblomov.eu Git - linux-2.6/blob - drivers/media/video/sn9c102/sn9c102_ov7660.c

   1 /***************************************************************************
   2  * Plug-in for OV7660 image sensor connected to the SN9C1xx PC Camera      *
   3  * Controllers                                                             *
   4  *                                                                         *
   5  * Copyright (C) 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
  26 static int ov7660_init(struct sn9c102_device* cam)
  27 {
  28         int err = 0;
  29
  30         err = sn9c102_write_const_regs(cam, {0x40, 0x02}, {0x00, 0x03},
  31                                        {0x1a, 0x04}, {0x03, 0x10},
  32                                        {0x08, 0x14}, {0x20, 0x17},
  33                                        {0x8b, 0x18}, {0x00, 0x19},
  34                                        {0x1d, 0x1a}, {0x10, 0x1b},
  35                                        {0x02, 0x1c}, {0x03, 0x1d},
  36                                        {0x0f, 0x1e}, {0x0c, 0x1f},
  37                                        {0x00, 0x20}, {0x29, 0x21},
  38                                        {0x40, 0x22}, {0x54, 0x23},
  39                                        {0x66, 0x24}, {0x76, 0x25},
  40                                        {0x85, 0x26}, {0x94, 0x27},
  41                                        {0xa1, 0x28}, {0xae, 0x29},
  42                                        {0xbb, 0x2a}, {0xc7, 0x2b},
  43                                        {0xd3, 0x2c}, {0xde, 0x2d},
  44                                        {0xea, 0x2e}, {0xf4, 0x2f},
  45                                        {0xff, 0x30}, {0x00, 0x3f},
  46                                        {0xc7, 0x40}, {0x01, 0x41},
  47                                        {0x44, 0x42}, {0x00, 0x43},
  48                                        {0x44, 0x44}, {0x00, 0x45},
  49                                        {0x44, 0x46}, {0x00, 0x47},
  50                                        {0xc7, 0x48}, {0x01, 0x49},
  51                                        {0xc7, 0x4a}, {0x01, 0x4b},
  52                                        {0xc7, 0x4c}, {0x01, 0x4d},
  53                                        {0x44, 0x4e}, {0x00, 0x4f},
  54                                        {0x44, 0x50}, {0x00, 0x51},
  55                                        {0x44, 0x52}, {0x00, 0x53},
  56                                        {0xc7, 0x54}, {0x01, 0x55},
  57                                        {0xc7, 0x56}, {0x01, 0x57},
  58                                        {0xc7, 0x58}, {0x01, 0x59},
  59                                        {0x44, 0x5a}, {0x00, 0x5b},
  60                                        {0x44, 0x5c}, {0x00, 0x5d},
  61                                        {0x44, 0x5e}, {0x00, 0x5f},
  62                                        {0xc7, 0x60}, {0x01, 0x61},
  63                                        {0xc7, 0x62}, {0x01, 0x63},
  64                                        {0xc7, 0x64}, {0x01, 0x65},
  65                                        {0x44, 0x66}, {0x00, 0x67},
  66                                        {0x44, 0x68}, {0x00, 0x69},
  67                                        {0x44, 0x6a}, {0x00, 0x6b},
  68                                        {0xc7, 0x6c}, {0x01, 0x6d},
  69                                        {0xc7, 0x6e}, {0x01, 0x6f},
  70                                        {0xc7, 0x70}, {0x01, 0x71},
  71                                        {0x44, 0x72}, {0x00, 0x73},
  72                                        {0x44, 0x74}, {0x00, 0x75},
  73                                        {0x44, 0x76}, {0x00, 0x77},
  74                                        {0xc7, 0x78}, {0x01, 0x79},
  75                                        {0xc7, 0x7a}, {0x01, 0x7b},
  76                                        {0xc7, 0x7c}, {0x01, 0x7d},
  77                                        {0x44, 0x7e}, {0x00, 0x7f},
  78                                        {0x14, 0x84}, {0x00, 0x85},
  79                                        {0x27, 0x86}, {0x00, 0x87},
  80                                        {0x07, 0x88}, {0x00, 0x89},
  81                                        {0xec, 0x8a}, {0x0f, 0x8b},
  82                                        {0xd8, 0x8c}, {0x0f, 0x8d},
  83                                        {0x3d, 0x8e}, {0x00, 0x8f},
  84                                        {0x3d, 0x90}, {0x00, 0x91},
  85                                        {0xcd, 0x92}, {0x0f, 0x93},
  86                                        {0xf7, 0x94}, {0x0f, 0x95},
  87                                        {0x0c, 0x96}, {0x00, 0x97},
  88                                        {0x00, 0x98}, {0x66, 0x99},
  89                                        {0x05, 0x9a}, {0x00, 0x9b},
  90                                        {0x04, 0x9c}, {0x00, 0x9d},
  91                                        {0x08, 0x9e}, {0x00, 0x9f},
  92                                        {0x2d, 0xc0}, {0x2d, 0xc1},
  93                                        {0x3a, 0xc2}, {0x05, 0xc3},
  94                                        {0x04, 0xc4}, {0x3f, 0xc5},
  95                                        {0x00, 0xc6}, {0x00, 0xc7},
  96                                        {0x50, 0xc8}, {0x3C, 0xc9},
  97                                        {0x28, 0xca}, {0xd8, 0xcb},
  98                                        {0x14, 0xcc}, {0xec, 0xcd},
  99                                        {0x32, 0xce}, {0xdd, 0xcf},
 100                                        {0x32, 0xd0}, {0xdd, 0xd1},
 101                                        {0x6a, 0xd2}, {0x50, 0xd3},
 102                                        {0x00, 0xd4}, {0x00, 0xd5},
 103                                        {0x00, 0xd6});
 104
 105         err += sn9c102_i2c_write(cam, 0x12, 0x80);
 106         err += sn9c102_i2c_write(cam, 0x11, 0x09);
 107         err += sn9c102_i2c_write(cam, 0x00, 0x0A);
 108         err += sn9c102_i2c_write(cam, 0x01, 0x80);
 109         err += sn9c102_i2c_write(cam, 0x02, 0x80);
 110         err += sn9c102_i2c_write(cam, 0x03, 0x00);
 111         err += sn9c102_i2c_write(cam, 0x04, 0x00);
 112         err += sn9c102_i2c_write(cam, 0x05, 0x08);
 113         err += sn9c102_i2c_write(cam, 0x06, 0x0B);
 114         err += sn9c102_i2c_write(cam, 0x07, 0x00);
 115         err += sn9c102_i2c_write(cam, 0x08, 0x1C);
 116         err += sn9c102_i2c_write(cam, 0x09, 0x01);
 117         err += sn9c102_i2c_write(cam, 0x0A, 0x76);
 118         err += sn9c102_i2c_write(cam, 0x0B, 0x60);
 119         err += sn9c102_i2c_write(cam, 0x0C, 0x00);
 120         err += sn9c102_i2c_write(cam, 0x0D, 0x08);
 121         err += sn9c102_i2c_write(cam, 0x0E, 0x04);
 122         err += sn9c102_i2c_write(cam, 0x0F, 0x6F);
 123         err += sn9c102_i2c_write(cam, 0x10, 0x20);
 124         err += sn9c102_i2c_write(cam, 0x11, 0x03);
 125         err += sn9c102_i2c_write(cam, 0x12, 0x05);
 126         err += sn9c102_i2c_write(cam, 0x13, 0xC7);
 127         err += sn9c102_i2c_write(cam, 0x14, 0x2C);
 128         err += sn9c102_i2c_write(cam, 0x15, 0x00);
 129         err += sn9c102_i2c_write(cam, 0x16, 0x02);
 130         err += sn9c102_i2c_write(cam, 0x17, 0x10);
 131         err += sn9c102_i2c_write(cam, 0x18, 0x60);
 132         err += sn9c102_i2c_write(cam, 0x19, 0x02);
 133         err += sn9c102_i2c_write(cam, 0x1A, 0x7B);
 134         err += sn9c102_i2c_write(cam, 0x1B, 0x02);
 135         err += sn9c102_i2c_write(cam, 0x1C, 0x7F);
 136         err += sn9c102_i2c_write(cam, 0x1D, 0xA2);
 137         err += sn9c102_i2c_write(cam, 0x1E, 0x01);
 138         err += sn9c102_i2c_write(cam, 0x1F, 0x0E);
 139         err += sn9c102_i2c_write(cam, 0x20, 0x05);
 140         err += sn9c102_i2c_write(cam, 0x21, 0x05);
 141         err += sn9c102_i2c_write(cam, 0x22, 0x05);
 142         err += sn9c102_i2c_write(cam, 0x23, 0x05);
 143         err += sn9c102_i2c_write(cam, 0x24, 0x68);
 144         err += sn9c102_i2c_write(cam, 0x25, 0x58);
 145         err += sn9c102_i2c_write(cam, 0x26, 0xD4);
 146         err += sn9c102_i2c_write(cam, 0x27, 0x80);
 147         err += sn9c102_i2c_write(cam, 0x28, 0x80);
 148         err += sn9c102_i2c_write(cam, 0x29, 0x30);
 149         err += sn9c102_i2c_write(cam, 0x2A, 0x00);
 150         err += sn9c102_i2c_write(cam, 0x2B, 0x00);
 151         err += sn9c102_i2c_write(cam, 0x2C, 0x80);
 152         err += sn9c102_i2c_write(cam, 0x2D, 0x00);
 153         err += sn9c102_i2c_write(cam, 0x2E, 0x00);
 154         err += sn9c102_i2c_write(cam, 0x2F, 0x0E);
 155         err += sn9c102_i2c_write(cam, 0x30, 0x08);
 156         err += sn9c102_i2c_write(cam, 0x31, 0x30);
 157         err += sn9c102_i2c_write(cam, 0x32, 0xB4);
 158         err += sn9c102_i2c_write(cam, 0x33, 0x00);
 159         err += sn9c102_i2c_write(cam, 0x34, 0x07);
 160         err += sn9c102_i2c_write(cam, 0x35, 0x84);
 161         err += sn9c102_i2c_write(cam, 0x36, 0x00);
 162         err += sn9c102_i2c_write(cam, 0x37, 0x0C);
 163         err += sn9c102_i2c_write(cam, 0x38, 0x02);
 164         err += sn9c102_i2c_write(cam, 0x39, 0x43);
 165         err += sn9c102_i2c_write(cam, 0x3A, 0x00);
 166         err += sn9c102_i2c_write(cam, 0x3B, 0x0A);
 167         err += sn9c102_i2c_write(cam, 0x3C, 0x6C);
 168         err += sn9c102_i2c_write(cam, 0x3D, 0x99);
 169         err += sn9c102_i2c_write(cam, 0x3E, 0x0E);
 170         err += sn9c102_i2c_write(cam, 0x3F, 0x41);
 171         err += sn9c102_i2c_write(cam, 0x40, 0xC1);
 172         err += sn9c102_i2c_write(cam, 0x41, 0x22);
 173         err += sn9c102_i2c_write(cam, 0x42, 0x08);
 174         err += sn9c102_i2c_write(cam, 0x43, 0xF0);
 175         err += sn9c102_i2c_write(cam, 0x44, 0x10);
 176         err += sn9c102_i2c_write(cam, 0x45, 0x78);
 177         err += sn9c102_i2c_write(cam, 0x46, 0xA8);
 178         err += sn9c102_i2c_write(cam, 0x47, 0x60);
 179         err += sn9c102_i2c_write(cam, 0x48, 0x80);
 180         err += sn9c102_i2c_write(cam, 0x49, 0x00);
 181         err += sn9c102_i2c_write(cam, 0x4A, 0x00);
 182         err += sn9c102_i2c_write(cam, 0x4B, 0x00);
 183         err += sn9c102_i2c_write(cam, 0x4C, 0x00);
 184         err += sn9c102_i2c_write(cam, 0x4D, 0x00);
 185         err += sn9c102_i2c_write(cam, 0x4E, 0x00);
 186         err += sn9c102_i2c_write(cam, 0x4F, 0x46);
 187         err += sn9c102_i2c_write(cam, 0x50, 0x36);
 188         err += sn9c102_i2c_write(cam, 0x51, 0x0F);
 189         err += sn9c102_i2c_write(cam, 0x52, 0x17);
 190         err += sn9c102_i2c_write(cam, 0x53, 0x7F);
 191         err += sn9c102_i2c_write(cam, 0x54, 0x96);
 192         err += sn9c102_i2c_write(cam, 0x55, 0x40);
 193         err += sn9c102_i2c_write(cam, 0x56, 0x40);
 194         err += sn9c102_i2c_write(cam, 0x57, 0x40);
 195         err += sn9c102_i2c_write(cam, 0x58, 0x0F);
 196         err += sn9c102_i2c_write(cam, 0x59, 0xBA);
 197         err += sn9c102_i2c_write(cam, 0x5A, 0x9A);
 198         err += sn9c102_i2c_write(cam, 0x5B, 0x22);
 199         err += sn9c102_i2c_write(cam, 0x5C, 0xB9);
 200         err += sn9c102_i2c_write(cam, 0x5D, 0x9B);
 201         err += sn9c102_i2c_write(cam, 0x5E, 0x10);
 202         err += sn9c102_i2c_write(cam, 0x5F, 0xF0);
 203         err += sn9c102_i2c_write(cam, 0x60, 0x05);
 204         err += sn9c102_i2c_write(cam, 0x61, 0x60);
 205         err += sn9c102_i2c_write(cam, 0x62, 0x00);
 206         err += sn9c102_i2c_write(cam, 0x63, 0x00);
 207         err += sn9c102_i2c_write(cam, 0x64, 0x50);
 208         err += sn9c102_i2c_write(cam, 0x65, 0x30);
 209         err += sn9c102_i2c_write(cam, 0x66, 0x00);
 210         err += sn9c102_i2c_write(cam, 0x67, 0x80);
 211         err += sn9c102_i2c_write(cam, 0x68, 0x7A);
 212         err += sn9c102_i2c_write(cam, 0x69, 0x90);
 213         err += sn9c102_i2c_write(cam, 0x6A, 0x80);
 214         err += sn9c102_i2c_write(cam, 0x6B, 0x0A);
 215         err += sn9c102_i2c_write(cam, 0x6C, 0x30);
 216         err += sn9c102_i2c_write(cam, 0x6D, 0x48);
 217         err += sn9c102_i2c_write(cam, 0x6E, 0x80);
 218         err += sn9c102_i2c_write(cam, 0x6F, 0x74);
 219         err += sn9c102_i2c_write(cam, 0x70, 0x64);
 220         err += sn9c102_i2c_write(cam, 0x71, 0x60);
 221         err += sn9c102_i2c_write(cam, 0x72, 0x5C);
 222         err += sn9c102_i2c_write(cam, 0x73, 0x58);
 223         err += sn9c102_i2c_write(cam, 0x74, 0x54);
 224         err += sn9c102_i2c_write(cam, 0x75, 0x4C);
 225         err += sn9c102_i2c_write(cam, 0x76, 0x40);
 226         err += sn9c102_i2c_write(cam, 0x77, 0x38);
 227         err += sn9c102_i2c_write(cam, 0x78, 0x34);
 228         err += sn9c102_i2c_write(cam, 0x79, 0x30);
 229         err += sn9c102_i2c_write(cam, 0x7A, 0x2F);
 230         err += sn9c102_i2c_write(cam, 0x7B, 0x2B);
 231         err += sn9c102_i2c_write(cam, 0x7C, 0x03);
 232         err += sn9c102_i2c_write(cam, 0x7D, 0x07);
 233         err += sn9c102_i2c_write(cam, 0x7E, 0x17);
 234         err += sn9c102_i2c_write(cam, 0x7F, 0x34);
 235         err += sn9c102_i2c_write(cam, 0x80, 0x41);
 236         err += sn9c102_i2c_write(cam, 0x81, 0x4D);
 237         err += sn9c102_i2c_write(cam, 0x82, 0x58);
 238         err += sn9c102_i2c_write(cam, 0x83, 0x63);
 239         err += sn9c102_i2c_write(cam, 0x84, 0x6E);
 240         err += sn9c102_i2c_write(cam, 0x85, 0x77);
 241         err += sn9c102_i2c_write(cam, 0x86, 0x87);
 242         err += sn9c102_i2c_write(cam, 0x87, 0x95);
 243         err += sn9c102_i2c_write(cam, 0x88, 0xAF);
 244         err += sn9c102_i2c_write(cam, 0x89, 0xC7);
 245         err += sn9c102_i2c_write(cam, 0x8A, 0xDF);
 246         err += sn9c102_i2c_write(cam, 0x8B, 0x99);
 247         err += sn9c102_i2c_write(cam, 0x8C, 0x99);
 248         err += sn9c102_i2c_write(cam, 0x8D, 0xCF);
 249         err += sn9c102_i2c_write(cam, 0x8E, 0x20);
 250         err += sn9c102_i2c_write(cam, 0x8F, 0x26);
 251         err += sn9c102_i2c_write(cam, 0x90, 0x10);
 252         err += sn9c102_i2c_write(cam, 0x91, 0x0C);
 253         err += sn9c102_i2c_write(cam, 0x92, 0x25);
 254         err += sn9c102_i2c_write(cam, 0x93, 0x00);
 255         err += sn9c102_i2c_write(cam, 0x94, 0x50);
 256         err += sn9c102_i2c_write(cam, 0x95, 0x50);
 257         err += sn9c102_i2c_write(cam, 0x96, 0x00);
 258         err += sn9c102_i2c_write(cam, 0x97, 0x01);
 259         err += sn9c102_i2c_write(cam, 0x98, 0x10);
 260         err += sn9c102_i2c_write(cam, 0x99, 0x40);
 261         err += sn9c102_i2c_write(cam, 0x9A, 0x40);
 262         err += sn9c102_i2c_write(cam, 0x9B, 0x20);
 263         err += sn9c102_i2c_write(cam, 0x9C, 0x00);
 264         err += sn9c102_i2c_write(cam, 0x9D, 0x99);
 265         err += sn9c102_i2c_write(cam, 0x9E, 0x7F);
 266         err += sn9c102_i2c_write(cam, 0x9F, 0x00);
 267         err += sn9c102_i2c_write(cam, 0xA0, 0x00);
 268         err += sn9c102_i2c_write(cam, 0xA1, 0x00);
 269
 270         return err;
 271 }
 272
 273
 274 static int ov7660_get_ctrl(struct sn9c102_device* cam,
 275                            struct v4l2_control* ctrl)
 276 {
 277         int err = 0;
 278
 279         switch (ctrl->id) {
 280         case V4L2_CID_EXPOSURE:
 281                 if ((ctrl->value = sn9c102_i2c_read(cam, 0x10)) < 0)
 282                         return -EIO;
 283                 break;
 284         case V4L2_CID_DO_WHITE_BALANCE:
 285                 if ((ctrl->value = sn9c102_read_reg(cam, 0x02)) < 0)
 286                         return -EIO;
 287                 ctrl->value = (ctrl->value & 0x04) ? 1 : 0;
 288                 break;
 289         case V4L2_CID_RED_BALANCE:
 290                 if ((ctrl->value = sn9c102_read_reg(cam, 0x05)) < 0)
 291                         return -EIO;
 292                 ctrl->value &= 0x7f;
 293                 break;
 294         case V4L2_CID_BLUE_BALANCE:
 295                 if ((ctrl->value = sn9c102_read_reg(cam, 0x06)) < 0)
 296                         return -EIO;
 297                 ctrl->value &= 0x7f;
 298                 break;
 299         case SN9C102_V4L2_CID_GREEN_BALANCE:
 300                 if ((ctrl->value = sn9c102_read_reg(cam, 0x07)) < 0)
 301                         return -EIO;
 302                 ctrl->value &= 0x7f;
 303                 break;
 304         case SN9C102_V4L2_CID_BAND_FILTER:
 305                 if ((ctrl->value = sn9c102_i2c_read(cam, 0x3b)) < 0)
 306                         return -EIO;
 307                 ctrl->value &= 0x08;
 308                 break;
 309         case V4L2_CID_GAIN:
 310                 if ((ctrl->value = sn9c102_i2c_read(cam, 0x00)) < 0)
 311                         return -EIO;
 312                 ctrl->value &= 0x1f;
 313                 break;
 314         case V4L2_CID_AUTOGAIN:
 315                 if ((ctrl->value = sn9c102_i2c_read(cam, 0x13)) < 0)
 316                         return -EIO;
 317                 ctrl->value &= 0x01;
 318                 break;
 319         default:
 320                 return -EINVAL;
 321         }
 322
 323         return err ? -EIO : 0;
 324 }
 325
 326
 327 static int ov7660_set_ctrl(struct sn9c102_device* cam,
 328                            const struct v4l2_control* ctrl)
 329 {
 330         int err = 0;
 331
 332         switch (ctrl->id) {
 333         case V4L2_CID_EXPOSURE:
 334                 err += sn9c102_i2c_write(cam, 0x10, ctrl->value);
 335                 break;
 336         case V4L2_CID_DO_WHITE_BALANCE:
 337                 err += sn9c102_write_reg(cam, 0x43 | (ctrl->value << 2), 0x02);
 338                 break;
 339         case V4L2_CID_RED_BALANCE:
 340                 err += sn9c102_write_reg(cam, ctrl->value, 0x05);
 341                 break;
 342         case V4L2_CID_BLUE_BALANCE:
 343                 err += sn9c102_write_reg(cam, ctrl->value, 0x06);
 344                 break;
 345         case SN9C102_V4L2_CID_GREEN_BALANCE:
 346                 err += sn9c102_write_reg(cam, ctrl->value, 0x07);
 347                 break;
 348         case SN9C102_V4L2_CID_BAND_FILTER:
 349                 err += sn9c102_i2c_write(cam, ctrl->value << 3, 0x3b);
 350                 break;
 351         case V4L2_CID_GAIN:
 352                 err += sn9c102_i2c_write(cam, 0x00, 0x60 + ctrl->value);
 353                 break;
 354         case V4L2_CID_AUTOGAIN:
 355                 err += sn9c102_i2c_write(cam, 0x13, 0xc0 |
 356                                                     (ctrl->value * 0x07));
 357                 break;
 358         default:
 359                 return -EINVAL;
 360         }
 361
 362         return err ? -EIO : 0;
 363 }
 364
 365
 366 static int ov7660_set_crop(struct sn9c102_device* cam,
 367                            const struct v4l2_rect* rect)
 368 {
 369         struct sn9c102_sensor* s = sn9c102_get_sensor(cam);
 370         int err = 0;
 371         u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 1,
 372            v_start = (u8)(rect->top - s->cropcap.bounds.top) + 1;
 373
 374         err += sn9c102_write_reg(cam, h_start, 0x12);
 375         err += sn9c102_write_reg(cam, v_start, 0x13);
 376
 377         return err;
 378 }
 379
 380
 381 static int ov7660_set_pix_format(struct sn9c102_device* cam,
 382                                  const struct v4l2_pix_format* pix)
 383 {
 384         int r0, err = 0;
 385
 386         r0 = sn9c102_pread_reg(cam, 0x01);
 387
 388         if (pix->pixelformat == V4L2_PIX_FMT_JPEG) {
 389                 err += sn9c102_write_reg(cam, r0 | 0x40, 0x01);
 390                 err += sn9c102_write_reg(cam, 0xa2, 0x17);
 391                 err += sn9c102_i2c_write(cam, 0x11, 0x00);
 392         } else {
 393                 err += sn9c102_write_reg(cam, r0 | 0x40, 0x01);
 394                 err += sn9c102_write_reg(cam, 0xa2, 0x17);
 395                 err += sn9c102_i2c_write(cam, 0x11, 0x0d);
 396         }
 397
 398         return err;
 399 }
 400
 401
 402 static const struct sn9c102_sensor ov7660 = {
 403         .name = "OV7660",
 404         .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
 405         .supported_bridge = BRIDGE_SN9C105 | BRIDGE_SN9C120,
 406         .sysfs_ops = SN9C102_I2C_READ | SN9C102_I2C_WRITE,
 407         .frequency = SN9C102_I2C_100KHZ,
 408         .interface = SN9C102_I2C_2WIRES,
 409         .i2c_slave_id = 0x21,
 410         .init = &ov7660_init,
 411         .qctrl = {
 412                 {
 413                         .id = V4L2_CID_GAIN,
 414                         .type = V4L2_CTRL_TYPE_INTEGER,
 415                         .name = "global gain",
 416                         .minimum = 0x00,
 417                         .maximum = 0x1f,
 418                         .step = 0x01,
 419                         .default_value = 0x09,
 420                         .flags = 0,
 421                 },
 422                 {
 423                         .id = V4L2_CID_EXPOSURE,
 424                         .type = V4L2_CTRL_TYPE_INTEGER,
 425                         .name = "exposure",
 426                         .minimum = 0x00,
 427                         .maximum = 0xff,
 428                         .step = 0x01,
 429                         .default_value = 0x27,
 430                         .flags = 0,
 431                 },
 432                 {
 433                         .id = V4L2_CID_DO_WHITE_BALANCE,
 434                         .type = V4L2_CTRL_TYPE_BOOLEAN,
 435                         .name = "night mode",
 436                         .minimum = 0x00,
 437                         .maximum = 0x01,
 438                         .step = 0x01,
 439                         .default_value = 0x00,
 440                         .flags = 0,
 441                 },
 442                 {
 443                         .id = V4L2_CID_RED_BALANCE,
 444                         .type = V4L2_CTRL_TYPE_INTEGER,
 445                         .name = "red balance",
 446                         .minimum = 0x00,
 447                         .maximum = 0x7f,
 448                         .step = 0x01,
 449                         .default_value = 0x14,
 450                         .flags = 0,
 451                 },
 452                 {
 453                         .id = V4L2_CID_BLUE_BALANCE,
 454                         .type = V4L2_CTRL_TYPE_INTEGER,
 455                         .name = "blue balance",
 456                         .minimum = 0x00,
 457                         .maximum = 0x7f,
 458                         .step = 0x01,
 459                         .default_value = 0x14,
 460                         .flags = 0,
 461                 },
 462                 {
 463                         .id = V4L2_CID_AUTOGAIN,
 464                         .type = V4L2_CTRL_TYPE_BOOLEAN,
 465                         .name = "auto adjust",
 466                         .minimum = 0x00,
 467                         .maximum = 0x01,
 468                         .step = 0x01,
 469                         .default_value = 0x01,
 470                         .flags = 0,
 471                 },
 472                 {
 473                         .id = SN9C102_V4L2_CID_GREEN_BALANCE,
 474                         .type = V4L2_CTRL_TYPE_INTEGER,
 475                         .name = "green balance",
 476                         .minimum = 0x00,
 477                         .maximum = 0x7f,
 478                         .step = 0x01,
 479                         .default_value = 0x14,
 480                         .flags = 0,
 481                 },
 482                 {
 483                         .id = SN9C102_V4L2_CID_BAND_FILTER,
 484                         .type = V4L2_CTRL_TYPE_BOOLEAN,
 485                         .name = "band filter",
 486                         .minimum = 0x00,
 487                         .maximum = 0x01,
 488                         .step = 0x01,
 489                         .default_value = 0x00,
 490                         .flags = 0,
 491                 },
 492         },
 493         .get_ctrl = &ov7660_get_ctrl,
 494         .set_ctrl = &ov7660_set_ctrl,
 495         .cropcap = {
 496                 .bounds = {
 497                         .left = 0,
 498                         .top = 0,
 499                         .width = 640,
 500                         .height = 480,
 501                 },
 502                 .defrect = {
 503                         .left = 0,
 504                         .top = 0,
 505                         .width = 640,
 506                         .height = 480,
 507                 },
 508         },
 509         .set_crop = &ov7660_set_crop,
 510         .pix_format = {
 511                 .width = 640,
 512                 .height = 480,
 513                 .pixelformat = V4L2_PIX_FMT_JPEG,
 514                 .priv = 8,
 515         },
 516         .set_pix_format = &ov7660_set_pix_format
 517 };
 518
 519
 520 int sn9c102_probe_ov7660(struct sn9c102_device* cam)
 521 {
 522         int pid, ver, err;
 523
 524         err = sn9c102_write_const_regs(cam, {0x01, 0xf1}, {0x00, 0xf1},
 525                                        {0x01, 0x01}, {0x00, 0x01},
 526                                        {0x28, 0x17});
 527
 528         pid = sn9c102_i2c_try_read(cam, &ov7660, 0x0a);
 529         ver = sn9c102_i2c_try_read(cam, &ov7660, 0x0b);
 530         if (err || pid < 0 || ver < 0)
 531                 return -EIO;
 532         if (pid != 0x76 || ver != 0x60)
 533                 return -ENODEV;
 534
 535         sn9c102_attach_sensor(cam, &ov7660);
 536
 537         return 0;
 538 }