drivers/usb/media/sn9c102_tas5110c1b.c

   1 /***************************************************************************
   2  * Plug-in for TAS5110C1B image sensor connected to the SN9C10x PC Camera  *
   3  * Controllers                                                             *
   4  *                                                                         *
   5  * Copyright (C) 2004-2005 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 tas5110c1b;
  26
  27 static struct v4l2_control tas5110c1b_gain;
  28
  29
  30 static int tas5110c1b_init(struct sn9c102_device* cam)
  31 {
  32         int err = 0;
  33
  34         err += sn9c102_write_reg(cam, 0x01, 0x01);
  35         err += sn9c102_write_reg(cam, 0x44, 0x01);
  36         err += sn9c102_write_reg(cam, 0x00, 0x10);
  37         err += sn9c102_write_reg(cam, 0x00, 0x11);
  38         err += sn9c102_write_reg(cam, 0x0a, 0x14);
  39         err += sn9c102_write_reg(cam, 0x60, 0x17);
  40         err += sn9c102_write_reg(cam, 0x06, 0x18);
  41         err += sn9c102_write_reg(cam, 0xfb, 0x19);
  42
  43         err += sn9c102_i2c_write(cam, 0xc0, 0x80);
  44
  45         return err;
  46 }
  47
  48
  49 static int tas5110c1b_get_ctrl(struct sn9c102_device* cam,
  50                                struct v4l2_control* ctrl)
  51 {
  52         switch (ctrl->id) {
  53         case V4L2_CID_GAIN:
  54                 ctrl->value = tas5110c1b_gain.value;
  55                 break;
  56         default:
  57                 return -EINVAL;
  58         }
  59
  60         return 0;
  61 }
  62
  63
  64 static int tas5110c1b_set_ctrl(struct sn9c102_device* cam,
  65                                const struct v4l2_control* ctrl)
  66 {
  67         int err = 0;
  68
  69         switch (ctrl->id) {
  70         case V4L2_CID_GAIN:
  71                 if (!(err += sn9c102_i2c_write(cam, 0x20, 0xf6 - ctrl->value)))
  72                         tas5110c1b_gain.value = ctrl->value;
  73                 break;
  74         default:
  75                 return -EINVAL;
  76         }
  77
  78         return err ? -EIO : 0;
  79 }
  80
  81
  82 static int tas5110c1b_set_crop(struct sn9c102_device* cam,
  83                                const struct v4l2_rect* rect)
  84 {
  85         struct sn9c102_sensor* s = &tas5110c1b;
  86         int err = 0;
  87         u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 69,
  88            v_start = (u8)(rect->top - s->cropcap.bounds.top) + 9;
  89
  90         err += sn9c102_write_reg(cam, h_start, 0x12);
  91         err += sn9c102_write_reg(cam, v_start, 0x13);
  92
  93         /* Don't change ! */
  94         err += sn9c102_write_reg(cam, 0x14, 0x1a);
  95         err += sn9c102_write_reg(cam, 0x0a, 0x1b);
  96         err += sn9c102_write_reg(cam, sn9c102_pread_reg(cam, 0x19), 0x19);
  97
  98         return err;
  99 }
 100
 101
 102 static int tas5110c1b_set_pix_format(struct sn9c102_device* cam,
 103                                      const struct v4l2_pix_format* pix)
 104 {
 105         int err = 0;
 106
 107         if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X)
 108                 err += sn9c102_write_reg(cam, 0x2b, 0x19);
 109         else
 110                 err += sn9c102_write_reg(cam, 0xfb, 0x19);
 111
 112         return err;
 113 }
 114
 115
 116 static struct sn9c102_sensor tas5110c1b = {
 117         .name = "TAS5110C1B",
 118         .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
 119         .sysfs_ops = SN9C102_I2C_WRITE,
 120         .frequency = SN9C102_I2C_100KHZ,
 121         .interface = SN9C102_I2C_3WIRES,
 122         .init = &tas5110c1b_init,
 123         .qctrl = {
 124                 {
 125                         .id = V4L2_CID_GAIN,
 126                         .type = V4L2_CTRL_TYPE_INTEGER,
 127                         .name = "global gain",
 128                         .minimum = 0x00,
 129                         .maximum = 0xf6,
 130                         .step = 0x01,
 131                         .default_value = 0x40,
 132                         .flags = 0,
 133                 },
 134         },
 135         .set_ctrl = &tas5110c1b_set_ctrl,
 136         .cropcap = {
 137                 .bounds = {
 138                         .left = 0,
 139                         .top = 0,
 140                         .width = 352,
 141                         .height = 288,
 142                 },
 143                 .defrect = {
 144                         .left = 0,
 145                         .top = 0,
 146                         .width = 352,
 147                         .height = 288,
 148                 },
 149         },
 150         .get_ctrl = &tas5110c1b_get_ctrl,
 151         .set_crop = &tas5110c1b_set_crop,
 152         .pix_format = {
 153                 .width = 352,
 154                 .height = 288,
 155                 .pixelformat = V4L2_PIX_FMT_SBGGR8,
 156                 .priv = 8,
 157         },
 158         .set_pix_format = &tas5110c1b_set_pix_format
 159 };
 160
 161
 162 int sn9c102_probe_tas5110c1b(struct sn9c102_device* cam)
 163 {
 164         /* This sensor has no identifiers, so let's attach it anyway */
 165         sn9c102_attach_sensor(cam, &tas5110c1b);
 166
 167         /* Sensor detection is based on USB pid/vid */
 168         if (le16_to_cpu(tas5110c1b.usbdev->descriptor.idProduct) != 0x6001 &&
 169             le16_to_cpu(tas5110c1b.usbdev->descriptor.idProduct) != 0x6005 &&
 170             le16_to_cpu(tas5110c1b.usbdev->descriptor.idProduct) != 0x60ab)
 171                 return -ENODEV;
 172
 173         return 0;
 174 }