git.oblomov.eu Git - linux-2.6/blob - drivers/media/video/sn9c102/sn9c102_hv7131d.c

   1 /***************************************************************************
   2  * Plug-in for HV7131D image sensor connected to the SN9C10x PC Camera     *
   3  * Controllers                                                             *
   4  *                                                                         *
   5  * Copyright (C) 2004-2006 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 struct sn9c102_sensor hv7131d;
  26
  27
  28 static int hv7131d_init(struct sn9c102_device* cam)
  29 {
  30         int err = 0;
  31
  32         err += sn9c102_write_reg(cam, 0x00, 0x10);
  33         err += sn9c102_write_reg(cam, 0x00, 0x11);
  34         err += sn9c102_write_reg(cam, 0x00, 0x14);
  35         err += sn9c102_write_reg(cam, 0x60, 0x17);
  36         err += sn9c102_write_reg(cam, 0x0e, 0x18);
  37         err += sn9c102_write_reg(cam, 0xf2, 0x19);
  38
  39         err += sn9c102_i2c_write(cam, 0x01, 0x04);
  40         err += sn9c102_i2c_write(cam, 0x02, 0x00);
  41         err += sn9c102_i2c_write(cam, 0x28, 0x00);
  42
  43         return err;
  44 }
  45
  46
  47 static int hv7131d_get_ctrl(struct sn9c102_device* cam,
  48                             struct v4l2_control* ctrl)
  49 {
  50         switch (ctrl->id) {
  51         case V4L2_CID_EXPOSURE:
  52                 {
  53                         int r1 = sn9c102_i2c_read(cam, 0x26),
  54                             r2 = sn9c102_i2c_read(cam, 0x27);
  55                         if (r1 < 0 || r2 < 0)
  56                                 return -EIO;
  57                         ctrl->value = (r1 << 8) | (r2 & 0xff);
  58                 }
  59                 return 0;
  60         case V4L2_CID_RED_BALANCE:
  61                 if ((ctrl->value = sn9c102_i2c_read(cam, 0x31)) < 0)
  62                         return -EIO;
  63                 ctrl->value = 0x3f - (ctrl->value & 0x3f);
  64                 return 0;
  65         case V4L2_CID_BLUE_BALANCE:
  66                 if ((ctrl->value = sn9c102_i2c_read(cam, 0x33)) < 0)
  67                         return -EIO;
  68                 ctrl->value = 0x3f - (ctrl->value & 0x3f);
  69                 return 0;
  70         case SN9C102_V4L2_CID_GREEN_BALANCE:
  71                 if ((ctrl->value = sn9c102_i2c_read(cam, 0x32)) < 0)
  72                         return -EIO;
  73                 ctrl->value = 0x3f - (ctrl->value & 0x3f);
  74                 return 0;
  75         case SN9C102_V4L2_CID_RESET_LEVEL:
  76                 if ((ctrl->value = sn9c102_i2c_read(cam, 0x30)) < 0)
  77                         return -EIO;
  78                 ctrl->value &= 0x3f;
  79                 return 0;
  80         case SN9C102_V4L2_CID_PIXEL_BIAS_VOLTAGE:
  81                 if ((ctrl->value = sn9c102_i2c_read(cam, 0x34)) < 0)
  82                         return -EIO;
  83                 ctrl->value &= 0x07;
  84                 return 0;
  85         default:
  86                 return -EINVAL;
  87         }
  88 }
  89
  90
  91 static int hv7131d_set_ctrl(struct sn9c102_device* cam,
  92                             const struct v4l2_control* ctrl)
  93 {
  94         int err = 0;
  95
  96         switch (ctrl->id) {
  97         case V4L2_CID_EXPOSURE:
  98                 err += sn9c102_i2c_write(cam, 0x26, ctrl->value >> 8);
  99                 err += sn9c102_i2c_write(cam, 0x27, ctrl->value & 0xff);
 100                 break;
 101         case V4L2_CID_RED_BALANCE:
 102                 err += sn9c102_i2c_write(cam, 0x31, 0x3f - ctrl->value);
 103                 break;
 104         case V4L2_CID_BLUE_BALANCE:
 105                 err += sn9c102_i2c_write(cam, 0x33, 0x3f - ctrl->value);
 106                 break;
 107         case SN9C102_V4L2_CID_GREEN_BALANCE:
 108                 err += sn9c102_i2c_write(cam, 0x32, 0x3f - ctrl->value);
 109                 break;
 110         case SN9C102_V4L2_CID_RESET_LEVEL:
 111                 err += sn9c102_i2c_write(cam, 0x30, ctrl->value);
 112                 break;
 113         case SN9C102_V4L2_CID_PIXEL_BIAS_VOLTAGE:
 114                 err += sn9c102_i2c_write(cam, 0x34, ctrl->value);
 115                 break;
 116         default:
 117                 return -EINVAL;
 118         }
 119
 120         return err ? -EIO : 0;
 121 }
 122
 123
 124 static int hv7131d_set_crop(struct sn9c102_device* cam,
 125                             const struct v4l2_rect* rect)
 126 {
 127         struct sn9c102_sensor* s = &hv7131d;
 128         int err = 0;
 129         u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 2,
 130            v_start = (u8)(rect->top - s->cropcap.bounds.top) + 2;
 131
 132         err += sn9c102_write_reg(cam, h_start, 0x12);
 133         err += sn9c102_write_reg(cam, v_start, 0x13);
 134
 135         return err;
 136 }
 137
 138
 139 static int hv7131d_set_pix_format(struct sn9c102_device* cam,
 140                                   const struct v4l2_pix_format* pix)
 141 {
 142         int err = 0;
 143
 144         if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X)
 145                 err += sn9c102_write_reg(cam, 0x42, 0x19);
 146         else
 147                 err += sn9c102_write_reg(cam, 0xf2, 0x19);
 148
 149         return err;
 150 }
 151
 152
 153 static struct sn9c102_sensor hv7131d = {
 154         .name = "HV7131D",
 155         .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
 156         .sysfs_ops = SN9C102_I2C_READ | SN9C102_I2C_WRITE,
 157         .frequency = SN9C102_I2C_100KHZ,
 158         .interface = SN9C102_I2C_2WIRES,
 159         .i2c_slave_id = 0x11,
 160         .init = &hv7131d_init,
 161         .qctrl = {
 162                 {
 163                         .id = V4L2_CID_EXPOSURE,
 164                         .type = V4L2_CTRL_TYPE_INTEGER,
 165                         .name = "exposure",
 166                         .minimum = 0x0250,
 167                         .maximum = 0xffff,
 168                         .step = 0x0001,
 169                         .default_value = 0x0250,
 170                         .flags = 0,
 171                 },
 172                 {
 173                         .id = V4L2_CID_RED_BALANCE,
 174                         .type = V4L2_CTRL_TYPE_INTEGER,
 175                         .name = "red balance",
 176                         .minimum = 0x00,
 177                         .maximum = 0x3f,
 178                         .step = 0x01,
 179                         .default_value = 0x00,
 180                         .flags = 0,
 181                 },
 182                 {
 183                         .id = V4L2_CID_BLUE_BALANCE,
 184                         .type = V4L2_CTRL_TYPE_INTEGER,
 185                         .name = "blue balance",
 186                         .minimum = 0x00,
 187                         .maximum = 0x3f,
 188                         .step = 0x01,
 189                         .default_value = 0x20,
 190                         .flags = 0,
 191                 },
 192                 {
 193                         .id = SN9C102_V4L2_CID_GREEN_BALANCE,
 194                         .type = V4L2_CTRL_TYPE_INTEGER,
 195                         .name = "green balance",
 196                         .minimum = 0x00,
 197                         .maximum = 0x3f,
 198                         .step = 0x01,
 199                         .default_value = 0x1e,
 200                         .flags = 0,
 201                 },
 202                 {
 203                         .id = SN9C102_V4L2_CID_RESET_LEVEL,
 204                         .type = V4L2_CTRL_TYPE_INTEGER,
 205                         .name = "reset level",
 206                         .minimum = 0x19,
 207                         .maximum = 0x3f,
 208                         .step = 0x01,
 209                         .default_value = 0x30,
 210                         .flags = 0,
 211                 },
 212                 {
 213                         .id = SN9C102_V4L2_CID_PIXEL_BIAS_VOLTAGE,
 214                         .type = V4L2_CTRL_TYPE_INTEGER,
 215                         .name = "pixel bias voltage",
 216                         .minimum = 0x00,
 217                         .maximum = 0x07,
 218                         .step = 0x01,
 219                         .default_value = 0x02,
 220                         .flags = 0,
 221                 },
 222         },
 223         .get_ctrl = &hv7131d_get_ctrl,
 224         .set_ctrl = &hv7131d_set_ctrl,
 225         .cropcap = {
 226                 .bounds = {
 227                         .left = 0,
 228                         .top = 0,
 229                         .width = 640,
 230                         .height = 480,
 231                 },
 232                 .defrect = {
 233                         .left = 0,
 234                         .top = 0,
 235                         .width = 640,
 236                         .height = 480,
 237                 },
 238         },
 239         .set_crop = &hv7131d_set_crop,
 240         .pix_format = {
 241                 .width = 640,
 242                 .height = 480,
 243                 .pixelformat = V4L2_PIX_FMT_SBGGR8,
 244                 .priv = 8,
 245         },
 246         .set_pix_format = &hv7131d_set_pix_format
 247 };
 248
 249
 250 int sn9c102_probe_hv7131d(struct sn9c102_device* cam)
 251 {
 252         int r0 = 0, r1 = 0, err = 0;
 253
 254         err += sn9c102_write_reg(cam, 0x01, 0x01);
 255         err += sn9c102_write_reg(cam, 0x00, 0x01);
 256         err += sn9c102_write_reg(cam, 0x28, 0x17);
 257         if (err)
 258                 return -EIO;
 259
 260         r0 = sn9c102_i2c_try_read(cam, &hv7131d, 0x00);
 261         r1 = sn9c102_i2c_try_read(cam, &hv7131d, 0x01);
 262         if (r0 < 0 || r1 < 0)
 263                 return -EIO;
 264
 265         if (r0 != 0x00 && r1 != 0x04)
 266                 return -ENODEV;
 267
 268         sn9c102_attach_sensor(cam, &hv7131d);
 269
 270         return 0;
 271 }