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
  28 static int tas5110c1b_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, 0x44, 0x01);
  34         err += sn9c102_write_reg(cam, 0x00, 0x10);
  35         err += sn9c102_write_reg(cam, 0x00, 0x11);
  36         err += sn9c102_write_reg(cam, 0x0a, 0x14);
  37         err += sn9c102_write_reg(cam, 0x60, 0x17);
  38         err += sn9c102_write_reg(cam, 0x06, 0x18);
  39         err += sn9c102_write_reg(cam, 0xfb, 0x19);
  40
  41         err += sn9c102_i2c_write(cam, 0xc0, 0x80);
  42
  43         return err;
  44 }
  45
  46
  47 static int tas5110c1b_set_ctrl(struct sn9c102_device* cam,
  48                                const struct v4l2_control* ctrl)
  49 {
  50         int err = 0;
  51
  52         switch (ctrl->id) {
  53         case V4L2_CID_GAIN:
  54                 err += sn9c102_i2c_write(cam, 0x20, 0xf6 - ctrl->value);
  55                 break;
  56         default:
  57                 return -EINVAL;
  58         }
  59
  60         return err ? -EIO : 0;
  61 }
  62
  63
  64 static int tas5110c1b_set_crop(struct sn9c102_device* cam,
  65                                const struct v4l2_rect* rect)
  66 {
  67         struct sn9c102_sensor* s = &tas5110c1b;
  68         int err = 0;
  69         u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 69,
  70            v_start = (u8)(rect->top - s->cropcap.bounds.top) + 9;
  71
  72         err += sn9c102_write_reg(cam, h_start, 0x12);
  73         err += sn9c102_write_reg(cam, v_start, 0x13);
  74
  75         /* Don't change ! */
  76         err += sn9c102_write_reg(cam, 0x14, 0x1a);
  77         err += sn9c102_write_reg(cam, 0x0a, 0x1b);
  78         err += sn9c102_write_reg(cam, sn9c102_pread_reg(cam, 0x19), 0x19);
  79
  80         return err;
  81 }
  82
  83
  84 static int tas5110c1b_set_pix_format(struct sn9c102_device* cam,
  85                                      const struct v4l2_pix_format* pix)
  86 {
  87         int err = 0;
  88
  89         if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X)
  90                 err += sn9c102_write_reg(cam, 0x2b, 0x19);
  91         else
  92                 err += sn9c102_write_reg(cam, 0xfb, 0x19);
  93
  94         return err;
  95 }
  96
  97
  98 static struct sn9c102_sensor tas5110c1b = {
  99         .name = "TAS5110C1B",
 100         .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
 101         .sysfs_ops = SN9C102_I2C_WRITE,
 102         .frequency = SN9C102_I2C_100KHZ,
 103         .interface = SN9C102_I2C_3WIRES,
 104         .init = &tas5110c1b_init,
 105         .qctrl = {
 106                 {
 107                         .id = V4L2_CID_GAIN,
 108                         .type = V4L2_CTRL_TYPE_INTEGER,
 109                         .name = "global gain",
 110                         .minimum = 0x00,
 111                         .maximum = 0xf6,
 112                         .step = 0x01,
 113                         .default_value = 0x40,
 114                         .flags = 0,
 115                 },
 116         },
 117         .set_ctrl = &tas5110c1b_set_ctrl,
 118         .cropcap = {
 119                 .bounds = {
 120                         .left = 0,
 121                         .top = 0,
 122                         .width = 352,
 123                         .height = 288,
 124                 },
 125                 .defrect = {
 126                         .left = 0,
 127                         .top = 0,
 128                         .width = 352,
 129                         .height = 288,
 130                 },
 131         },
 132         .set_crop = &tas5110c1b_set_crop,
 133         .pix_format = {
 134                 .width = 352,
 135                 .height = 288,
 136                 .pixelformat = V4L2_PIX_FMT_SBGGR8,
 137                 .priv = 8,
 138         },
 139         .set_pix_format = &tas5110c1b_set_pix_format
 140 };
 141
 142
 143 int sn9c102_probe_tas5110c1b(struct sn9c102_device* cam)
 144 {
 145         /* This sensor has no identifiers, so let's attach it anyway */
 146         sn9c102_attach_sensor(cam, &tas5110c1b);
 147
 148         /* Sensor detection is based on USB pid/vid */
 149         if (le16_to_cpu(tas5110c1b.usbdev->descriptor.idProduct) != 0x6001 &&
 150             le16_to_cpu(tas5110c1b.usbdev->descriptor.idProduct) != 0x6005 &&
 151             le16_to_cpu(tas5110c1b.usbdev->descriptor.idProduct) != 0x60ab)
 152                 return -ENODEV;
 153
 154         return 0;
 155 }