release/src-rt-6.x/linux/linux-2.6/drivers/media/video/et61x251/et61x251_tas5130d1b.c

   1 /***************************************************************************
   2  * Plug-in for TAS5130D1B image sensor connected to the ET61X[12]51        *
   3  * PC Camera Controllers                                                   *
   4  *                                                                         *
   5  * Copyright (C) 2006-2007 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 "et61x251_sensor.h"
  23
  24
  25 static int tas5130d1b_init(struct et61x251_device* cam)
  26 {
  27         int err = 0;
  28
  29         err += et61x251_write_reg(cam, 0x14, 0x01);
  30         err += et61x251_write_reg(cam, 0x1b, 0x02);
  31         err += et61x251_write_reg(cam, 0x02, 0x12);
  32         err += et61x251_write_reg(cam, 0x0e, 0x60);
  33         err += et61x251_write_reg(cam, 0x80, 0x61);
  34         err += et61x251_write_reg(cam, 0xf0, 0x62);
  35         err += et61x251_write_reg(cam, 0x03, 0x63);
  36         err += et61x251_write_reg(cam, 0x14, 0x64);
  37         err += et61x251_write_reg(cam, 0xf4, 0x65);
  38         err += et61x251_write_reg(cam, 0x01, 0x66);
  39         err += et61x251_write_reg(cam, 0x05, 0x67);
  40         err += et61x251_write_reg(cam, 0x8f, 0x68);
  41         err += et61x251_write_reg(cam, 0x0f, 0x8d);
  42         err += et61x251_write_reg(cam, 0x08, 0x8e);
  43
  44         return err;
  45 }
  46
  47
  48 static int tas5130d1b_set_ctrl(struct et61x251_device* cam,
  49                                const struct v4l2_control* ctrl)
  50 {
  51         int err = 0;
  52
  53         switch (ctrl->id) {
  54         case V4L2_CID_GAIN:
  55                 err += et61x251_i2c_raw_write(cam, 2, 0x20,
  56                                               0xf6-ctrl->value, 0, 0, 0,
  57                                               0, 0, 0, 0);
  58                 break;
  59         case V4L2_CID_EXPOSURE:
  60                 err += et61x251_i2c_raw_write(cam, 2, 0x40,
  61                                               0x47-ctrl->value, 0, 0, 0,
  62                                               0, 0, 0, 0);
  63                 break;
  64         default:
  65                 return -EINVAL;
  66         }
  67
  68         return err ? -EIO : 0;
  69 }
  70
  71
  72 static struct et61x251_sensor tas5130d1b = {
  73         .name = "TAS5130D1B",
  74         .interface = ET61X251_I2C_3WIRES,
  75         .rsta = ET61X251_I2C_RSTA_STOP,
  76         .active_pixel = {
  77                 .left = 106,
  78                 .top = 13,
  79         },
  80         .init = &tas5130d1b_init,
  81         .qctrl = {
  82                 {
  83                         .id = V4L2_CID_GAIN,
  84                         .type = V4L2_CTRL_TYPE_INTEGER,
  85                         .name = "global gain",
  86                         .minimum = 0x00,
  87                         .maximum = 0xf6,
  88                         .step = 0x02,
  89                         .default_value = 0x0d,
  90                         .flags = 0,
  91                 },
  92                 {
  93                         .id = V4L2_CID_EXPOSURE,
  94                         .type = V4L2_CTRL_TYPE_INTEGER,
  95                         .name = "exposure",
  96                         .minimum = 0x00,
  97                         .maximum = 0x47,
  98                         .step = 0x01,
  99                         .default_value = 0x23,
 100                         .flags = 0,
 101                 },
 102         },
 103         .set_ctrl = &tas5130d1b_set_ctrl,
 104         .cropcap = {
 105                 .bounds = {
 106                         .left = 0,
 107                         .top = 0,
 108                         .width = 640,
 109                         .height = 480,
 110                 },
 111                 .defrect = {
 112                         .left = 0,
 113                         .top = 0,
 114                         .width = 640,
 115                         .height = 480,
 116                 },
 117         },
 118         .pix_format = {
 119                 .width = 640,
 120                 .height = 480,
 121                 .pixelformat = V4L2_PIX_FMT_SBGGR8,
 122                 .priv = 8,
 123         },
 124 };
 125
 126
 127 int et61x251_probe_tas5130d1b(struct et61x251_device* cam)
 128 {
 129         const struct usb_device_id tas5130d1b_id_table[] = {
 130                 { USB_DEVICE(0x102c, 0x6251), },
 131                 { }
 132         };
 133
 134         /* Sensor detection is based on USB pid/vid */
 135         if (!et61x251_match_id(cam, tas5130d1b_id_table))
 136                 return -ENODEV;
 137
 138         et61x251_attach_sensor(cam, &tas5130d1b);
 139
 140         return 0;
 141 }