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         int err = 0;
  31
  32         err += sn9c102_write_reg(cam, 0x01, 0x01);
  33         err += sn9c102_write_reg(cam, 0x20, 0x17);
  34         err += sn9c102_write_reg(cam, 0x04, 0x01);
  35         err += sn9c102_write_reg(cam, 0x01, 0x10);
  36         err += sn9c102_write_reg(cam, 0x00, 0x11);
  37         err += sn9c102_write_reg(cam, 0x00, 0x14);
  38         err += sn9c102_write_reg(cam, 0x60, 0x17);
  39         err += sn9c102_write_reg(cam, 0x07, 0x18);
  40
  41         err += sn9c102_i2c_try_raw_write(cam, &tas5130d1b, 4, 0x11, 0x00, 0x40,
  42                                          0x47, 0, 0);
  43
  44         return err;
  45 }
  46
  47
  48 static int tas5130d1b_set_ctrl(struct sn9c102_device* cam,
  49                                const struct v4l2_control* ctrl)
  50 {
  51         switch (ctrl->id) {
  52         case V4L2_CID_GAIN:
  53                 return sn9c102_i2c_try_raw_write(cam, &tas5130d1b, 4, 0x11,
  54                                                  0x02, 0x20,
  55                                                  0xff - (ctrl->value & 0xff),
  56                                                  0, 0);
  57         default:
  58                 return -EINVAL;
  59         }
  60 }
  61
  62
  63 static int tas5130d1b_set_crop(struct sn9c102_device* cam,
  64                                const struct v4l2_rect* rect)
  65 {
  66         struct sn9c102_sensor* s = &tas5130d1b;
  67         u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 104,
  68            v_start = (u8)(rect->top - s->cropcap.bounds.top) + 12;
  69         int err = 0;
  70
  71         err += sn9c102_write_reg(cam, h_start, 0x12);
  72         err += sn9c102_write_reg(cam, v_start, 0x13);
  73
  74         /* Do NOT change! */
  75         err += sn9c102_write_reg(cam, 0x1d, 0x1a);
  76         err += sn9c102_write_reg(cam, 0x10, 0x1b);
  77         err += sn9c102_write_reg(cam, 0xf3, 0x19);
  78
  79         return err;
  80 }
  81
  82
  83 static struct sn9c102_sensor tas5130d1b = {
  84         .name = "TAS5130D1B",
  85         .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
  86         .frequency = SN9C102_I2C_100KHZ,
  87         .interface = SN9C102_I2C_3WIRES,
  88         .init = &tas5130d1b_init,
  89         .qctrl = {
  90                 {
  91                         .id = V4L2_CID_GAIN,
  92                         .type = V4L2_CTRL_TYPE_INTEGER,
  93                         .name = "global gain",
  94                         .minimum = 0x00,
  95                         .maximum = 0xff,
  96                         .step = 0x01,
  97                         .default_value = 0x00,
  98                         .flags = 0,
  99                 },
 100         },
 101         .set_ctrl = &tas5130d1b_set_ctrl,
 102         .cropcap = {
 103                 .bounds = {
 104                         .left = 0,
 105                         .top = 0,
 106                         .width = 640,
 107                         .height = 480,
 108                 },
 109                 .defrect = {
 110                         .left = 0,
 111                         .top = 0,
 112                         .width = 640,
 113                         .height = 480,
 114                 },
 115         },
 116         .set_crop = &tas5130d1b_set_crop,
 117         .pix_format = {
 118                 .width = 640,
 119                 .height = 480,
 120                 .pixelformat = V4L2_PIX_FMT_SBGGR8,
 121                 .priv = 8,
 122         }
 123 };
 124
 125
 126 int sn9c102_probe_tas5130d1b(struct sn9c102_device* cam)
 127 {
 128         /* This sensor has no identifiers, so let's attach it anyway */
 129         sn9c102_attach_sensor(cam, &tas5130d1b);
 130
 131         /* At the moment, sensor detection is based on USB pid/vid */
 132         if (tas5130d1b.usbdev->descriptor.idProduct != 0x6025)
 133                 return -ENODEV;
 134
 135         return 0;
 136 }