drivers/usb/media/sn9c102_tas5130d1b.c

   1 /***************************************************************************
   2  * Driver for TAS5130D1B image sensor connected to the SN9C10[12] PC       *
   3  * Camera Controllers                                                      *
   4  *                                                                         *
   5  * Copyright (C) 2004 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 tas5130d1b;
  26
  27
  28 static int tas5130d1b_init(struct sn9c102_device* cam)
  29 {
  30         const u8 DARKNESS = 0xff, CONTRAST = 0xb0, GAIN = 0x08;
  31         int err = 0;
  32
  33         err += sn9c102_write_reg(cam, 0x01, 0x01);
  34         err += sn9c102_write_reg(cam, 0x20, 0x17);
  35         err += sn9c102_write_reg(cam, 0x04, 0x01);
  36         err += sn9c102_write_reg(cam, 0x01, 0x10);
  37         err += sn9c102_write_reg(cam, 0x00, 0x11);
  38         err += sn9c102_write_reg(cam, 0x00, 0x14);
  39         err += sn9c102_write_reg(cam, 0x60, 0x17);
  40         err += sn9c102_write_reg(cam, 0x07, 0x18);
  41
  42         err += sn9c102_i2c_try_raw_write(cam, &tas5130d1b, 4, 0x11, 0x00, 0x80,
  43                                          0x00, 0, 0);
  44         err += sn9c102_i2c_try_raw_write(cam, &tas5130d1b, 4, 0x11, 0x00, 0xc0,
  45                                          GAIN, 0, 0);
  46         err += sn9c102_i2c_try_raw_write(cam, &tas5130d1b, 4, 0x11, 0x00, 0x40,
  47                                          CONTRAST, 0, 0);
  48         err += sn9c102_i2c_try_raw_write(cam, &tas5130d1b, 4, 0x11, 0x02, 0x20,
  49                                          DARKNESS, 0, 0);
  50
  51         return err;
  52 }
  53
  54
  55 static int tas5130d1b_set_crop(struct sn9c102_device* cam,
  56                                const struct v4l2_rect* rect)
  57 {
  58         struct sn9c102_sensor* s = &tas5130d1b;
  59         u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 104,
  60            v_start = (u8)(rect->top - s->cropcap.bounds.top) + 12;
  61         int err = 0;
  62
  63         err += sn9c102_write_reg(cam, h_start, 0x12);
  64         err += sn9c102_write_reg(cam, v_start, 0x13);
  65
  66         /* Do NOT change! */
  67         err += sn9c102_write_reg(cam, 0x1d, 0x1a);
  68         err += sn9c102_write_reg(cam, 0x10, 0x1b);
  69         err += sn9c102_write_reg(cam, 0xf3, 0x19);
  70
  71         return err;
  72 }
  73
  74
  75 static struct sn9c102_sensor tas5130d1b = {
  76         .name = "TAS5130D1B",
  77         .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
  78         .frequency = SN9C102_I2C_100KHZ,
  79         .interface = SN9C102_I2C_3WIRES,
  80         .init = &tas5130d1b_init,
  81         .cropcap = {
  82                 .bounds = {
  83                         .left = 0,
  84                         .top = 0,
  85                         .width = 640,
  86                         .height = 480,
  87                 },
  88                 .defrect = {
  89                         .left = 0,
  90                         .top = 0,
  91                         .width = 640,
  92                         .height = 480,
  93                 },
  94         },
  95         .set_crop = &tas5130d1b_set_crop,
  96         .pix_format = {
  97                 .width = 640,
  98                 .height = 480,
  99                 .pixelformat = V4L2_PIX_FMT_SBGGR8,
 100                 .priv = 8,
 101         }
 102 };
 103
 104
 105 int sn9c102_probe_tas5130d1b(struct sn9c102_device* cam)
 106 {
 107         /* This sensor has no identifiers, so let's attach it anyway */
 108         sn9c102_attach_sensor(cam, &tas5130d1b);
 109
 110         /* At the moment, sensor detection is based on USB pid/vid */
 111         if (tas5130d1b.usbdev->descriptor.idProduct != 0x6025)
 112                 return -ENODEV;
 113
 114         return 0;
 115 }