drivers/media/video/sn9c102/sn9c102_pas202bca.c

   1 /***************************************************************************
   2  * Plug-in for PAS202BCA image sensor connected to the SN9C10x PC Camera   *
   3  * Controllers                                                             *
   4  *                                                                         *
   5  * Copyright (C) 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 <linux/delay.h>
  23 #include "sn9c102_sensor.h"
  24
  25
  26 static struct sn9c102_sensor pas202bca;
  27
  28
  29 static int pas202bca_init(struct sn9c102_device* cam)
  30 {
  31         int err = 0;
  32
  33         err += sn9c102_write_reg(cam, 0x00, 0x10);
  34         err += sn9c102_write_reg(cam, 0x00, 0x11);
  35         err += sn9c102_write_reg(cam, 0x00, 0x14);
  36         err += sn9c102_write_reg(cam, 0x20, 0x17);
  37         err += sn9c102_write_reg(cam, 0x30, 0x19);
  38         err += sn9c102_write_reg(cam, 0x09, 0x18);
  39
  40         err += sn9c102_i2c_write(cam, 0x02, 0x14);
  41         err += sn9c102_i2c_write(cam, 0x03, 0x40);
  42         err += sn9c102_i2c_write(cam, 0x0d, 0x2c);
  43         err += sn9c102_i2c_write(cam, 0x0e, 0x01);
  44         err += sn9c102_i2c_write(cam, 0x0f, 0xa9);
  45         err += sn9c102_i2c_write(cam, 0x10, 0x08);
  46         err += sn9c102_i2c_write(cam, 0x13, 0x63);
  47         err += sn9c102_i2c_write(cam, 0x15, 0x70);
  48         err += sn9c102_i2c_write(cam, 0x11, 0x01);
  49
  50         msleep(400);
  51
  52         return err;
  53 }
  54
  55
  56 static int pas202bca_set_pix_format(struct sn9c102_device* cam,
  57                                     const struct v4l2_pix_format* pix)
  58 {
  59         int err = 0;
  60
  61         if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X)
  62                 err += sn9c102_write_reg(cam, 0x24, 0x17);
  63         else
  64                 err += sn9c102_write_reg(cam, 0x20, 0x17);
  65
  66         return err;
  67 }
  68
  69
  70 static int pas202bca_set_ctrl(struct sn9c102_device* cam,
  71                               const struct v4l2_control* ctrl)
  72 {
  73         int err = 0;
  74
  75         switch (ctrl->id) {
  76         case V4L2_CID_EXPOSURE:
  77                 err += sn9c102_i2c_write(cam, 0x04, ctrl->value >> 6);
  78                 err += sn9c102_i2c_write(cam, 0x05, ctrl->value & 0x3f);
  79                 break;
  80         case V4L2_CID_RED_BALANCE:
  81                 err += sn9c102_i2c_write(cam, 0x09, ctrl->value);
  82                 break;
  83         case V4L2_CID_BLUE_BALANCE:
  84                 err += sn9c102_i2c_write(cam, 0x07, ctrl->value);
  85                 break;
  86         case V4L2_CID_GAIN:
  87                 err += sn9c102_i2c_write(cam, 0x10, ctrl->value);
  88                 break;
  89         case SN9C102_V4L2_CID_GREEN_BALANCE:
  90                 err += sn9c102_i2c_write(cam, 0x08, ctrl->value);
  91                 break;
  92         case SN9C102_V4L2_CID_DAC_MAGNITUDE:
  93                 err += sn9c102_i2c_write(cam, 0x0c, ctrl->value);
  94                 break;
  95         default:
  96                 return -EINVAL;
  97         }
  98         err += sn9c102_i2c_write(cam, 0x11, 0x01);
  99
 100         return err ? -EIO : 0;
 101 }
 102
 103
 104 static int pas202bca_set_crop(struct sn9c102_device* cam,
 105                               const struct v4l2_rect* rect)
 106 {
 107         struct sn9c102_sensor* s = &pas202bca;
 108         int err = 0;
 109         u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 3,
 110            v_start = (u8)(rect->top - s->cropcap.bounds.top) + 3;
 111
 112         err += sn9c102_write_reg(cam, h_start, 0x12);
 113         err += sn9c102_write_reg(cam, v_start, 0x13);
 114
 115         return err;
 116 }
 117
 118
 119 static struct sn9c102_sensor pas202bca = {
 120         .name = "PAS202BCA",
 121         .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
 122         .sysfs_ops = SN9C102_I2C_READ | SN9C102_I2C_WRITE,
 123         .frequency = SN9C102_I2C_400KHZ | SN9C102_I2C_100KHZ,
 124         .interface = SN9C102_I2C_2WIRES,
 125         .i2c_slave_id = 0x40,
 126         .init = &pas202bca_init,
 127         .qctrl = {
 128                 {
 129                         .id = V4L2_CID_EXPOSURE,
 130                         .type = V4L2_CTRL_TYPE_INTEGER,
 131                         .name = "exposure",
 132                         .minimum = 0x01e5,
 133                         .maximum = 0x3fff,
 134                         .step = 0x0001,
 135                         .default_value = 0x01e5,
 136                         .flags = 0,
 137                 },
 138                 {
 139                         .id = V4L2_CID_GAIN,
 140                         .type = V4L2_CTRL_TYPE_INTEGER,
 141                         .name = "global gain",
 142                         .minimum = 0x00,
 143                         .maximum = 0x1f,
 144                         .step = 0x01,
 145                         .default_value = 0x0c,
 146                         .flags = 0,
 147                 },
 148                 {
 149                         .id = V4L2_CID_RED_BALANCE,
 150                         .type = V4L2_CTRL_TYPE_INTEGER,
 151                         .name = "red balance",
 152                         .minimum = 0x00,
 153                         .maximum = 0x0f,
 154                         .step = 0x01,
 155                         .default_value = 0x01,
 156                         .flags = 0,
 157                 },
 158                 {
 159                         .id = V4L2_CID_BLUE_BALANCE,
 160                         .type = V4L2_CTRL_TYPE_INTEGER,
 161                         .name = "blue balance",
 162                         .minimum = 0x00,
 163                         .maximum = 0x0f,
 164                         .step = 0x01,
 165                         .default_value = 0x05,
 166                         .flags = 0,
 167                 },
 168                 {
 169                         .id = SN9C102_V4L2_CID_GREEN_BALANCE,
 170                         .type = V4L2_CTRL_TYPE_INTEGER,
 171                         .name = "green balance",
 172                         .minimum = 0x00,
 173                         .maximum = 0x0f,
 174                         .step = 0x01,
 175                         .default_value = 0x00,
 176                         .flags = 0,
 177                 },
 178                 {
 179                         .id = SN9C102_V4L2_CID_DAC_MAGNITUDE,
 180                         .type = V4L2_CTRL_TYPE_INTEGER,
 181                         .name = "DAC magnitude",
 182                         .minimum = 0x00,
 183                         .maximum = 0xff,
 184                         .step = 0x01,
 185                         .default_value = 0x04,
 186                         .flags = 0,
 187                 },
 188         },
 189         .set_ctrl = &pas202bca_set_ctrl,
 190         .cropcap = {
 191                 .bounds = {
 192                         .left = 0,
 193                         .top = 0,
 194                         .width = 640,
 195                         .height = 480,
 196                 },
 197                 .defrect = {
 198                         .left = 0,
 199                         .top = 0,
 200                         .width = 640,
 201                         .height = 480,
 202                 },
 203         },
 204         .set_crop = &pas202bca_set_crop,
 205         .pix_format = {
 206                 .width = 640,
 207                 .height = 480,
 208                 .pixelformat = V4L2_PIX_FMT_SBGGR8,
 209                 .priv = 8,
 210         },
 211         .set_pix_format = &pas202bca_set_pix_format
 212 };
 213
 214
 215 int sn9c102_probe_pas202bca(struct sn9c102_device* cam)
 216 {
 217         const struct usb_device_id pas202bca_id_table[] = {
 218                 { USB_DEVICE(0x0c45, 0x60af), },
 219                 { }
 220         };
 221         int err = 0;
 222
 223         if (!sn9c102_match_id(cam,pas202bca_id_table))
 224                 return -ENODEV;
 225
 226         err += sn9c102_write_reg(cam, 0x01, 0x01);
 227         err += sn9c102_write_reg(cam, 0x40, 0x01);
 228         err += sn9c102_write_reg(cam, 0x28, 0x17);
 229         if (err)
 230                 return -EIO;
 231
 232         if (sn9c102_i2c_try_write(cam, &pas202bca, 0x10, 0)) /* try to write */
 233                 return -ENODEV;
 234
 235         sn9c102_attach_sensor(cam, &pas202bca);
 236
 237         return 0;
 238 }