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
  24
  25 static int ov7660_init(struct sn9c102_device* cam)
  26 {
  27         int err = 0;
  28
  29         err = sn9c102_write_const_regs(cam, {0x40, 0x02}, {0x00, 0x03},
  30                                        {0x1a, 0x04}, {0x03, 0x10},
  31                                        {0x08, 0x14}, {0x20, 0x17},
  32                                        {0x8b, 0x18}, {0x00, 0x19},
  33                                        {0x1d, 0x1a}, {0x10, 0x1b},
  34                                        {0x02, 0x1c}, {0x03, 0x1d},
  35                                        {0x0f, 0x1e}, {0x0c, 0x1f},
  36                                        {0x00, 0x20}, {0x29, 0x21},
  37                                        {0x40, 0x22}, {0x54, 0x23},
  38                                        {0x66, 0x24}, {0x76, 0x25},
  39                                        {0x85, 0x26}, {0x94, 0x27},
  40                                        {0xa1, 0x28}, {0xae, 0x29},
  41                                        {0xbb, 0x2a}, {0xc7, 0x2b},
  42                                        {0xd3, 0x2c}, {0xde, 0x2d},
  43                                        {0xea, 0x2e}, {0xf4, 0x2f},
  44                                        {0xff, 0x30}, {0x00, 0x3F},
  45                                        {0xC7, 0x40}, {0x01, 0x41},
  46                                        {0x44, 0x42}, {0x00, 0x43},
  47                                        {0x44, 0x44}, {0x00, 0x45},
  48                                        {0x44, 0x46}, {0x00, 0x47},
  49                                        {0xC7, 0x48}, {0x01, 0x49},
  50                                        {0xC7, 0x4A}, {0x01, 0x4B},
  51                                        {0xC7, 0x4C}, {0x01, 0x4D},
  52                                        {0x44, 0x4E}, {0x00, 0x4F},
  53                                        {0x44, 0x50}, {0x00, 0x51},
  54                                        {0x44, 0x52}, {0x00, 0x53},
  55                                        {0xC7, 0x54}, {0x01, 0x55},
  56                                        {0xC7, 0x56}, {0x01, 0x57},
  57                                        {0xC7, 0x58}, {0x01, 0x59},
  58                                        {0x44, 0x5A}, {0x00, 0x5B},
  59                                        {0x44, 0x5C}, {0x00, 0x5D},
  60                                        {0x44, 0x5E}, {0x00, 0x5F},
  61                                        {0xC7, 0x60}, {0x01, 0x61},
  62                                        {0xC7, 0x62}, {0x01, 0x63},
  63                                        {0xC7, 0x64}, {0x01, 0x65},
  64                                        {0x44, 0x66}, {0x00, 0x67},
  65                                        {0x44, 0x68}, {0x00, 0x69},
  66                                        {0x44, 0x6A}, {0x00, 0x6B},
  67                                        {0xC7, 0x6C}, {0x01, 0x6D},
  68                                        {0xC7, 0x6E}, {0x01, 0x6F},
  69                                        {0xC7, 0x70}, {0x01, 0x71},
  70                                        {0x44, 0x72}, {0x00, 0x73},
  71                                        {0x44, 0x74}, {0x00, 0x75},
  72                                        {0x44, 0x76}, {0x00, 0x77},
  73                                        {0xC7, 0x78}, {0x01, 0x79},
  74                                        {0xC7, 0x7A}, {0x01, 0x7B},
  75                                        {0xC7, 0x7C}, {0x01, 0x7D},
  76                                        {0x44, 0x7E}, {0x00, 0x7F},
  77                                        {0x14, 0x84}, {0x00, 0x85},
  78                                        {0x27, 0x86}, {0x00, 0x87},
  79                                        {0x07, 0x88}, {0x00, 0x89},
  80                                        {0xEC, 0x8A}, {0x0f, 0x8B},
  81                                        {0xD8, 0x8C}, {0x0f, 0x8D},
  82                                        {0x3D, 0x8E}, {0x00, 0x8F},
  83                                        {0x3D, 0x90}, {0x00, 0x91},
  84                                        {0xCD, 0x92}, {0x0f, 0x93},
  85                                        {0xf7, 0x94}, {0x0f, 0x95},
  86                                        {0x0C, 0x96}, {0x00, 0x97},
  87                                        {0x00, 0x98}, {0x66, 0x99},
  88                                        {0x05, 0x9A}, {0x00, 0x9B},
  89                                        {0x04, 0x9C}, {0x00, 0x9D},
  90                                        {0x08, 0x9E}, {0x00, 0x9F},
  91                                        {0x2D, 0xC0}, {0x2D, 0xC1},
  92                                        {0x3A, 0xC2}, {0x05, 0xC3},
  93                                        {0x04, 0xC4}, {0x3F, 0xC5},
  94                                        {0x00, 0xC6}, {0x00, 0xC7},
  95                                        {0x50, 0xC8}, {0x3C, 0xC9},
  96                                        {0x28, 0xCA}, {0xD8, 0xCB},
  97                                        {0x14, 0xCC}, {0xEC, 0xCD},
  98                                        {0x32, 0xCE}, {0xDD, 0xCF},
  99                                        {0x32, 0xD0}, {0xDD, 0xD1},
 100                                        {0x6A, 0xD2}, {0x50, 0xD3},
 101                                        {0x00, 0xD4}, {0x00, 0xD5},
 102                                        {0x00, 0xD6});
 103
 104         err += sn9c102_i2c_write(cam, 0x12, 0x80);
 105         err += sn9c102_i2c_write(cam, 0x11, 0x09);
 106         err += sn9c102_i2c_write(cam, 0x00, 0x0A);
 107         err += sn9c102_i2c_write(cam, 0x01, 0x78);
 108         err += sn9c102_i2c_write(cam, 0x02, 0x90);
 109         err += sn9c102_i2c_write(cam, 0x03, 0x00);
 110         err += sn9c102_i2c_write(cam, 0x04, 0x00);
 111         err += sn9c102_i2c_write(cam, 0x05, 0x08);
 112         err += sn9c102_i2c_write(cam, 0x06, 0x0B);
 113         err += sn9c102_i2c_write(cam, 0x07, 0x00);
 114         err += sn9c102_i2c_write(cam, 0x08, 0x1C);
 115         err += sn9c102_i2c_write(cam, 0x09, 0x01);
 116         err += sn9c102_i2c_write(cam, 0x0A, 0x76);
 117         err += sn9c102_i2c_write(cam, 0x0B, 0x60);
 118         err += sn9c102_i2c_write(cam, 0x0C, 0x00);
 119         err += sn9c102_i2c_write(cam, 0x0D, 0x08);
 120         err += sn9c102_i2c_write(cam, 0x0E, 0x04);
 121         err += sn9c102_i2c_write(cam, 0x0F, 0x6F);
 122         err += sn9c102_i2c_write(cam, 0x10, 0x20);
 123         err += sn9c102_i2c_write(cam, 0x11, 0x03);
 124         err += sn9c102_i2c_write(cam, 0x12, 0x05);
 125         err += sn9c102_i2c_write(cam, 0x13, 0xF8);
 126         err += sn9c102_i2c_write(cam, 0x14, 0x2C);
 127         err += sn9c102_i2c_write(cam, 0x15, 0x00);
 128         err += sn9c102_i2c_write(cam, 0x16, 0x02);
 129         err += sn9c102_i2c_write(cam, 0x17, 0x10);
 130         err += sn9c102_i2c_write(cam, 0x18, 0x60);
 131         err += sn9c102_i2c_write(cam, 0x19, 0x02);
 132         err += sn9c102_i2c_write(cam, 0x1A, 0x7B);
 133         err += sn9c102_i2c_write(cam, 0x1B, 0x02);
 134         err += sn9c102_i2c_write(cam, 0x1C, 0x7F);
 135         err += sn9c102_i2c_write(cam, 0x1D, 0xA2);
 136         err += sn9c102_i2c_write(cam, 0x1E, 0x01);
 137         err += sn9c102_i2c_write(cam, 0x1F, 0x0E);
 138         err += sn9c102_i2c_write(cam, 0x20, 0x05);
 139         err += sn9c102_i2c_write(cam, 0x21, 0x05);
 140         err += sn9c102_i2c_write(cam, 0x22, 0x05);
 141         err += sn9c102_i2c_write(cam, 0x23, 0x05);
 142         err += sn9c102_i2c_write(cam, 0x24, 0x68);
 143         err += sn9c102_i2c_write(cam, 0x25, 0x58);
 144         err += sn9c102_i2c_write(cam, 0x26, 0xD4);
 145         err += sn9c102_i2c_write(cam, 0x27, 0x80);
 146         err += sn9c102_i2c_write(cam, 0x28, 0x80);
 147         err += sn9c102_i2c_write(cam, 0x29, 0x30);
 148         err += sn9c102_i2c_write(cam, 0x2A, 0x00);
 149         err += sn9c102_i2c_write(cam, 0x2B, 0x00);
 150         err += sn9c102_i2c_write(cam, 0x2C, 0x80);
 151         err += sn9c102_i2c_write(cam, 0x2D, 0x00);
 152         err += sn9c102_i2c_write(cam, 0x2E, 0x00);
 153         err += sn9c102_i2c_write(cam, 0x2F, 0x0E);
 154         err += sn9c102_i2c_write(cam, 0x30, 0x08);
 155         err += sn9c102_i2c_write(cam, 0x31, 0x30);
 156         err += sn9c102_i2c_write(cam, 0x32, 0xB4);
 157         err += sn9c102_i2c_write(cam, 0x33, 0x00);
 158         err += sn9c102_i2c_write(cam, 0x34, 0x07);
 159         err += sn9c102_i2c_write(cam, 0x35, 0x84);
 160         err += sn9c102_i2c_write(cam, 0x36, 0x00);
 161         err += sn9c102_i2c_write(cam, 0x37, 0x0C);
 162         err += sn9c102_i2c_write(cam, 0x38, 0x02);
 163         err += sn9c102_i2c_write(cam, 0x39, 0x43);
 164         err += sn9c102_i2c_write(cam, 0x3A, 0x00);
 165         err += sn9c102_i2c_write(cam, 0x3B, 0x02);
 166         err += sn9c102_i2c_write(cam, 0x3C, 0x6C);
 167         err += sn9c102_i2c_write(cam, 0x3D, 0x99);
 168         err += sn9c102_i2c_write(cam, 0x3E, 0x0E);
 169         err += sn9c102_i2c_write(cam, 0x3F, 0x41);
 170         err += sn9c102_i2c_write(cam, 0x40, 0xC1);
 171         err += sn9c102_i2c_write(cam, 0x41, 0x22);
 172         err += sn9c102_i2c_write(cam, 0x42, 0x08);
 173         err += sn9c102_i2c_write(cam, 0x43, 0xF0);
 174         err += sn9c102_i2c_write(cam, 0x44, 0x10);
 175         err += sn9c102_i2c_write(cam, 0x45, 0x78);
 176         err += sn9c102_i2c_write(cam, 0x46, 0xA8);
 177         err += sn9c102_i2c_write(cam, 0x47, 0x60);
 178         err += sn9c102_i2c_write(cam, 0x48, 0x80);
 179         err += sn9c102_i2c_write(cam, 0x49, 0x00);
 180         err += sn9c102_i2c_write(cam, 0x4A, 0x00);
 181         err += sn9c102_i2c_write(cam, 0x4B, 0x00);
 182         err += sn9c102_i2c_write(cam, 0x4C, 0x00);
 183         err += sn9c102_i2c_write(cam, 0x4D, 0x00);
 184         err += sn9c102_i2c_write(cam, 0x4E, 0x00);
 185         err += sn9c102_i2c_write(cam, 0x4F, 0x46);
 186         err += sn9c102_i2c_write(cam, 0x50, 0x36);
 187         err += sn9c102_i2c_write(cam, 0x51, 0x0F);
 188         err += sn9c102_i2c_write(cam, 0x52, 0x17);
 189         err += sn9c102_i2c_write(cam, 0x53, 0x7F);
 190         err += sn9c102_i2c_write(cam, 0x54, 0x96);
 191         err += sn9c102_i2c_write(cam, 0x55, 0x40);
 192         err += sn9c102_i2c_write(cam, 0x56, 0x40);
 193         err += sn9c102_i2c_write(cam, 0x57, 0x40);
 194         err += sn9c102_i2c_write(cam, 0x58, 0x0F);
 195         err += sn9c102_i2c_write(cam, 0x59, 0xBA);
 196         err += sn9c102_i2c_write(cam, 0x5A, 0x9A);
 197         err += sn9c102_i2c_write(cam, 0x5B, 0x22);
 198         err += sn9c102_i2c_write(cam, 0x5C, 0xB9);
 199         err += sn9c102_i2c_write(cam, 0x5D, 0x9B);
 200         err += sn9c102_i2c_write(cam, 0x5E, 0x10);
 201         err += sn9c102_i2c_write(cam, 0x5F, 0xF0);
 202         err += sn9c102_i2c_write(cam, 0x60, 0x05);
 203         err += sn9c102_i2c_write(cam, 0x61, 0x60);
 204         err += sn9c102_i2c_write(cam, 0x62, 0x00);
 205         err += sn9c102_i2c_write(cam, 0x63, 0x00);
 206         err += sn9c102_i2c_write(cam, 0x64, 0x50);
 207         err += sn9c102_i2c_write(cam, 0x65, 0x30);
 208         err += sn9c102_i2c_write(cam, 0x66, 0x00);
 209         err += sn9c102_i2c_write(cam, 0x67, 0x80);
 210         err += sn9c102_i2c_write(cam, 0x68, 0x7A);
 211         err += sn9c102_i2c_write(cam, 0x69, 0x90);
 212         err += sn9c102_i2c_write(cam, 0x6A, 0x80);
 213         err += sn9c102_i2c_write(cam, 0x6B, 0x0A);
 214         err += sn9c102_i2c_write(cam, 0x6C, 0x30);
 215         err += sn9c102_i2c_write(cam, 0x6D, 0x48);
 216         err += sn9c102_i2c_write(cam, 0x6E, 0x80);
 217         err += sn9c102_i2c_write(cam, 0x6F, 0x74);
 218         err += sn9c102_i2c_write(cam, 0x70, 0x64);
 219         err += sn9c102_i2c_write(cam, 0x71, 0x60);
 220         err += sn9c102_i2c_write(cam, 0x72, 0x5C);
 221         err += sn9c102_i2c_write(cam, 0x73, 0x58);
 222         err += sn9c102_i2c_write(cam, 0x74, 0x54);
 223         err += sn9c102_i2c_write(cam, 0x75, 0x4C);
 224         err += sn9c102_i2c_write(cam, 0x76, 0x40);
 225         err += sn9c102_i2c_write(cam, 0x77, 0x38);
 226         err += sn9c102_i2c_write(cam, 0x78, 0x34);
 227         err += sn9c102_i2c_write(cam, 0x79, 0x30);
 228         err += sn9c102_i2c_write(cam, 0x7A, 0x2F);
 229         err += sn9c102_i2c_write(cam, 0x7B, 0x2B);
 230         err += sn9c102_i2c_write(cam, 0x7C, 0x03);
 231         err += sn9c102_i2c_write(cam, 0x7D, 0x07);
 232         err += sn9c102_i2c_write(cam, 0x7E, 0x17);
 233         err += sn9c102_i2c_write(cam, 0x7F, 0x34);
 234         err += sn9c102_i2c_write(cam, 0x80, 0x41);
 235         err += sn9c102_i2c_write(cam, 0x81, 0x4D);
 236         err += sn9c102_i2c_write(cam, 0x82, 0x58);
 237         err += sn9c102_i2c_write(cam, 0x83, 0x63);
 238         err += sn9c102_i2c_write(cam, 0x84, 0x6E);
 239         err += sn9c102_i2c_write(cam, 0x85, 0x77);
 240         err += sn9c102_i2c_write(cam, 0x86, 0x87);
 241         err += sn9c102_i2c_write(cam, 0x87, 0x95);
 242         err += sn9c102_i2c_write(cam, 0x88, 0xAF);
 243         err += sn9c102_i2c_write(cam, 0x89, 0xC7);
 244         err += sn9c102_i2c_write(cam, 0x8A, 0xDF);
 245         err += sn9c102_i2c_write(cam, 0x8B, 0x99);
 246         err += sn9c102_i2c_write(cam, 0x8C, 0x99);
 247         err += sn9c102_i2c_write(cam, 0x8D, 0xCF);
 248         err += sn9c102_i2c_write(cam, 0x8E, 0x20);
 249         err += sn9c102_i2c_write(cam, 0x8F, 0x26);
 250         err += sn9c102_i2c_write(cam, 0x90, 0x10);
 251         err += sn9c102_i2c_write(cam, 0x91, 0x0C);
 252         err += sn9c102_i2c_write(cam, 0x92, 0x25);
 253         err += sn9c102_i2c_write(cam, 0x93, 0x00);
 254         err += sn9c102_i2c_write(cam, 0x94, 0x50);
 255         err += sn9c102_i2c_write(cam, 0x95, 0x50);
 256         err += sn9c102_i2c_write(cam, 0x96, 0x00);
 257         err += sn9c102_i2c_write(cam, 0x97, 0x01);
 258         err += sn9c102_i2c_write(cam, 0x98, 0x10);
 259         err += sn9c102_i2c_write(cam, 0x99, 0x40);
 260         err += sn9c102_i2c_write(cam, 0x9A, 0x40);
 261         err += sn9c102_i2c_write(cam, 0x9B, 0x20);
 262         err += sn9c102_i2c_write(cam, 0x9C, 0x00);
 263         err += sn9c102_i2c_write(cam, 0x9D, 0x99);
 264         err += sn9c102_i2c_write(cam, 0x9E, 0x7F);
 265         err += sn9c102_i2c_write(cam, 0x9F, 0x00);
 266         err += sn9c102_i2c_write(cam, 0xA0, 0x00);
 267         err += sn9c102_i2c_write(cam, 0xA1, 0x00);
 268
 269         return err;
 270 }
 271
 272
 273 static int ov7660_get_ctrl(struct sn9c102_device* cam,
 274                            struct v4l2_control* ctrl)
 275 {
 276         int err = 0;
 277
 278         switch (ctrl->id) {
 279         case V4L2_CID_EXPOSURE:
 280                 if ((ctrl->value = sn9c102_i2c_read(cam, 0x10)) < 0)
 281                         return -EIO;
 282                 break;
 283         case V4L2_CID_DO_WHITE_BALANCE:
 284                 ctrl->value = sn9c102_pread_reg(cam, 0x02);
 285                 ctrl->value = (ctrl->value & 0x04) ? 1 : 0;
 286                 break;
 287         case V4L2_CID_RED_BALANCE:
 288                 ctrl->value = sn9c102_pread_reg(cam, 0x05);
 289                 ctrl->value &= 0x7f;
 290                 break;
 291         case V4L2_CID_BLUE_BALANCE:
 292                 ctrl->value = sn9c102_pread_reg(cam, 0x06);
 293                 ctrl->value &= 0x7f;
 294                 break;
 295         case SN9C102_V4L2_CID_GREEN_BALANCE:
 296                 ctrl->value = sn9c102_pread_reg(cam, 0x07);
 297                 ctrl->value &= 0x7f;
 298                 break;
 299         case V4L2_CID_GAIN:
 300                 if ((ctrl->value = sn9c102_i2c_read(cam, 0x00)) < 0)
 301                         return -EIO;
 302                 ctrl->value &= 0x7f;
 303                 break;
 304         case V4L2_CID_AUTOGAIN:
 305                 if ((ctrl->value = sn9c102_i2c_read(cam, 0x13)) < 0)
 306                         return -EIO;
 307                 ctrl->value &= 0x01;
 308                 break;
 309         default:
 310                 return -EINVAL;
 311         }
 312
 313         return err ? -EIO : 0;
 314 }
 315
 316
 317 static int ov7660_set_ctrl(struct sn9c102_device* cam,
 318                            const struct v4l2_control* ctrl)
 319 {
 320         int err = 0;
 321
 322         switch (ctrl->id) {
 323         case V4L2_CID_EXPOSURE:
 324                 err += sn9c102_i2c_write(cam, 0x10, ctrl->value);
 325                 break;
 326         case V4L2_CID_DO_WHITE_BALANCE:
 327                 err += sn9c102_write_reg(cam, 0x43 | (ctrl->value << 2), 0x02);
 328                 break;
 329         case V4L2_CID_RED_BALANCE:
 330                 err += sn9c102_write_reg(cam, ctrl->value, 0x05);
 331                 break;
 332         case V4L2_CID_BLUE_BALANCE:
 333                 err += sn9c102_write_reg(cam, ctrl->value, 0x06);
 334                 break;
 335         case SN9C102_V4L2_CID_GREEN_BALANCE:
 336                 err += sn9c102_write_reg(cam, ctrl->value, 0x07);
 337                 break;
 338         case V4L2_CID_GAIN:
 339                 err += sn9c102_i2c_write(cam, 0x00, ctrl->value);
 340                 break;
 341         case V4L2_CID_AUTOGAIN:
 342                 err += sn9c102_i2c_write(cam, 0x13, 0xf0 | ctrl->value |
 343                                                     (ctrl->value << 1));
 344                 break;
 345         default:
 346                 return -EINVAL;
 347         }
 348
 349         return err ? -EIO : 0;
 350 }
 351
 352
 353 static int ov7660_set_crop(struct sn9c102_device* cam,
 354                            const struct v4l2_rect* rect)
 355 {
 356         struct sn9c102_sensor* s = sn9c102_get_sensor(cam);
 357         int err = 0;
 358         u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 1,
 359            v_start = (u8)(rect->top - s->cropcap.bounds.top) + 1;
 360
 361         err += sn9c102_write_reg(cam, h_start, 0x12);
 362         err += sn9c102_write_reg(cam, v_start, 0x13);
 363
 364         return err;
 365 }
 366
 367
 368 static int ov7660_set_pix_format(struct sn9c102_device* cam,
 369                                  const struct v4l2_pix_format* pix)
 370 {
 371         int r0, err = 0;
 372
 373         r0 = sn9c102_pread_reg(cam, 0x01);
 374
 375         if (pix->pixelformat == V4L2_PIX_FMT_JPEG) {
 376                 err += sn9c102_write_reg(cam, r0 | 0x40, 0x01);
 377                 err += sn9c102_write_reg(cam, 0xa2, 0x17);
 378                 err += sn9c102_i2c_write(cam, 0x11, 0x00);
 379         } else {
 380                 err += sn9c102_write_reg(cam, r0 | 0x40, 0x01);
 381                 err += sn9c102_write_reg(cam, 0xa2, 0x17);
 382                 err += sn9c102_i2c_write(cam, 0x11, 0x0d);
 383         }
 384
 385         return err;
 386 }
 387
 388
 389 static struct sn9c102_sensor ov7660 = {
 390         .name = "OV7660",
 391         .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
 392         .supported_bridge = BRIDGE_SN9C105 | BRIDGE_SN9C120,
 393         .sysfs_ops = SN9C102_I2C_READ | SN9C102_I2C_WRITE,
 394         .frequency = SN9C102_I2C_100KHZ,
 395         .interface = SN9C102_I2C_2WIRES,
 396         .i2c_slave_id = 0x21,
 397         .init = &ov7660_init,
 398         .qctrl = {
 399                 {
 400                         .id = V4L2_CID_GAIN,
 401                         .type = V4L2_CTRL_TYPE_INTEGER,
 402                         .name = "global gain",
 403                         .minimum = 0x00,
 404                         .maximum = 0x7f,
 405                         .step = 0x01,
 406                         .default_value = 0x0a,
 407                         .flags = 0,
 408                 },
 409                 {
 410                         .id = V4L2_CID_EXPOSURE,
 411                         .type = V4L2_CTRL_TYPE_INTEGER,
 412                         .name = "exposure",
 413                         .minimum = 0x00,
 414                         .maximum = 0xff,
 415                         .step = 0x01,
 416                         .default_value = 0x50,
 417                         .flags = 0,
 418                 },
 419                 {
 420                         .id = V4L2_CID_DO_WHITE_BALANCE,
 421                         .type = V4L2_CTRL_TYPE_BOOLEAN,
 422                         .name = "night mode",
 423                         .minimum = 0x00,
 424                         .maximum = 0x01,
 425                         .step = 0x01,
 426                         .default_value = 0x00,
 427                         .flags = 0,
 428                 },
 429                 {
 430                         .id = V4L2_CID_RED_BALANCE,
 431                         .type = V4L2_CTRL_TYPE_INTEGER,
 432                         .name = "red balance",
 433                         .minimum = 0x00,
 434                         .maximum = 0x7f,
 435                         .step = 0x01,
 436                         .default_value = 0x1f,
 437                         .flags = 0,
 438                 },
 439                 {
 440                         .id = V4L2_CID_BLUE_BALANCE,
 441                         .type = V4L2_CTRL_TYPE_INTEGER,
 442                         .name = "blue balance",
 443                         .minimum = 0x00,
 444                         .maximum = 0x7f,
 445                         .step = 0x01,
 446                         .default_value = 0x1e,
 447                         .flags = 0,
 448                 },
 449                 {
 450                         .id = V4L2_CID_AUTOGAIN,
 451                         .type = V4L2_CTRL_TYPE_BOOLEAN,
 452                         .name = "auto adjust",
 453                         .minimum = 0x00,
 454                         .maximum = 0x01,
 455                         .step = 0x01,
 456                         .default_value = 0x00,
 457                         .flags = 0,
 458                 },
 459                 {
 460                         .id = SN9C102_V4L2_CID_GREEN_BALANCE,
 461                         .type = V4L2_CTRL_TYPE_INTEGER,
 462                         .name = "green balance",
 463                         .minimum = 0x00,
 464                         .maximum = 0x7f,
 465                         .step = 0x01,
 466                         .default_value = 0x20,
 467                         .flags = 0,
 468                 },
 469         },
 470         .get_ctrl = &ov7660_get_ctrl,
 471         .set_ctrl = &ov7660_set_ctrl,
 472         .cropcap = {
 473                 .bounds = {
 474                         .left = 0,
 475                         .top = 0,
 476                         .width = 640,
 477                         .height = 480,
 478                 },
 479                 .defrect = {
 480                         .left = 0,
 481                         .top = 0,
 482                         .width = 640,
 483                         .height = 480,
 484                 },
 485         },
 486         .set_crop = &ov7660_set_crop,
 487         .pix_format = {
 488                 .width = 640,
 489                 .height = 480,
 490                 .pixelformat = V4L2_PIX_FMT_JPEG,
 491                 .priv = 8,
 492         },
 493         .set_pix_format = &ov7660_set_pix_format
 494 };
 495
 496
 497 int sn9c102_probe_ov7660(struct sn9c102_device* cam)
 498 {
 499         int pid, ver, err;
 500
 501         err = sn9c102_write_const_regs(cam, {0x01, 0xf1}, {0x00, 0xf1},
 502                                        {0x01, 0x01}, {0x00, 0x01},
 503                                        {0x28, 0x17});
 504
 505         pid = sn9c102_i2c_try_read(cam, &ov7660, 0x0a);
 506         ver = sn9c102_i2c_try_read(cam, &ov7660, 0x0b);
 507         if (err || pid < 0 || ver < 0)
 508                 return -EIO;
 509         if (pid != 0x76 || ver != 0x60)
 510                 return -ENODEV;
 511         sn9c102_attach_sensor(cam, &ov7660);
 512
 513         return 0;
 514 }