LXR linux/drivers/media/usb/sn9c102/sn9c102

   1/***************************************************************************
   2 * Plug-in for TAS5110C1B image sensor connected to the SN9C1xx PC Camera  *
   3 * Controllers                                                             *
   4 *                                                                         *
   5 * Copyright (C) 2004-2007 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 "sn9c102_sensor.h"
  23#include "sn9c102_devtable.h"
  24
  25
  26static int tas5110c1b_init(struct sn9c102_device* cam)
  27{
  28        int err = 0;
  29
  30        err = sn9c102_write_const_regs(cam, {0x01, 0x01}, {0x44, 0x01},
  31                                       {0x00, 0x10}, {0x00, 0x11},
  32                                       {0x0a, 0x14}, {0x60, 0x17},
  33                                       {0x06, 0x18}, {0xfb, 0x19});
  34
  35        err += sn9c102_i2c_write(cam, 0xc0, 0x80);
  36
  37        return err;
  38}
  39
  40
  41static int tas5110c1b_set_ctrl(struct sn9c102_device* cam,
  42                               const struct v4l2_control* ctrl)
  43{
  44        int err = 0;
  45
  46        switch (ctrl->id) {
  47        case V4L2_CID_GAIN:
  48                err += sn9c102_i2c_write(cam, 0x20, 0xf6 - ctrl->value);
  49                break;
  50        default:
  51                return -EINVAL;
  52        }
  53
  54        return err ? -EIO : 0;
  55}
  56
  57
  58static int tas5110c1b_set_crop(struct sn9c102_device* cam,
  59                               const struct v4l2_rect* rect)
  60{
  61        struct sn9c102_sensor* s = sn9c102_get_sensor(cam);
  62        int err = 0;
  63        u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 69,
  64           v_start = (u8)(rect->top - s->cropcap.bounds.top) + 9;
  65
  66        err += sn9c102_write_reg(cam, h_start, 0x12);
  67        err += sn9c102_write_reg(cam, v_start, 0x13);
  68
  69        /* Don't change ! */
  70        err += sn9c102_write_reg(cam, 0x14, 0x1a);
  71        err += sn9c102_write_reg(cam, 0x0a, 0x1b);
  72        err += sn9c102_write_reg(cam, sn9c102_pread_reg(cam, 0x19), 0x19);
  73
  74        return err;
  75}
  76
  77
  78static int tas5110c1b_set_pix_format(struct sn9c102_device* cam,
  79                                     const struct v4l2_pix_format* pix)
  80{
  81        int err = 0;
  82
  83        if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X)
  84                err += sn9c102_write_reg(cam, 0x2b, 0x19);
  85        else
  86                err += sn9c102_write_reg(cam, 0xfb, 0x19);
  87
  88        return err;
  89}
  90
  91
  92static const struct sn9c102_sensor tas5110c1b = {
  93        .name = "TAS5110C1B",
  94        .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
  95        .supported_bridge = BRIDGE_SN9C101 | BRIDGE_SN9C102,
  96        .sysfs_ops = SN9C102_I2C_WRITE,
  97        .frequency = SN9C102_I2C_100KHZ,
  98        .interface = SN9C102_I2C_3WIRES,
  99        .init = &tas5110c1b_init,
 100        .qctrl = {
 101                {
 102                        .id = V4L2_CID_GAIN,
 103                        .type = V4L2_CTRL_TYPE_INTEGER,
 104                        .name = "global gain",
 105                        .minimum = 0x00,
 106                        .maximum = 0xf6,
 107                        .step = 0x01,
 108                        .default_value = 0x40,
 109                        .flags = 0,
 110                },
 111        },
 112        .set_ctrl = &tas5110c1b_set_ctrl,
 113        .cropcap = {
 114                .bounds = {
 115                        .left = 0,
 116                        .top = 0,
 117                        .width = 352,
 118                        .height = 288,
 119                },
 120                .defrect = {
 121                        .left = 0,
 122                        .top = 0,
 123                        .width = 352,
 124                        .height = 288,
 125                },
 126        },
 127        .set_crop = &tas5110c1b_set_crop,
 128        .pix_format = {
 129                .width = 352,
 130                .height = 288,
 131                .pixelformat = V4L2_PIX_FMT_SBGGR8,
 132                .priv = 8,
 133        },
 134        .set_pix_format = &tas5110c1b_set_pix_format
 135};
 136
 137
 138int sn9c102_probe_tas5110c1b(struct sn9c102_device* cam)
 139{
 140        const struct usb_device_id tas5110c1b_id_table[] = {
 141                { USB_DEVICE(0x0c45, 0x6001), },
 142                { USB_DEVICE(0x0c45, 0x6005), },
 143                { USB_DEVICE(0x0c45, 0x60ab), },
 144                { }
 145        };
 146
 147        /* Sensor detection is based on USB pid/vid */
 148        if (!sn9c102_match_id(cam, tas5110c1b_id_table))
 149                return -ENODEV;
 150
 151        sn9c102_attach_sensor(cam, &tas5110c1b);
 152
 153        return 0;
 154}
 155