drivers/media/video/sn9c102/sn9c102_tas5130d1b.c

   1 /***************************************************************************
   2  * Plug-in for TAS5130D1B 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
  24
  25 static int tas5130d1b_init(struct sn9c102_device* cam)
  26 {
  27         int err = 0;
  28
  29         err += sn9c102_write_reg(cam, 0x01, 0x01);
  30         err += sn9c102_write_reg(cam, 0x20, 0x17);
  31         err += sn9c102_write_reg(cam, 0x04, 0x01);
  32         err += sn9c102_write_reg(cam, 0x01, 0x10);
  33         err += sn9c102_write_reg(cam, 0x00, 0x11);
  34         err += sn9c102_write_reg(cam, 0x00, 0x14);
  35         err += sn9c102_write_reg(cam, 0x60, 0x17);
  36         err += sn9c102_write_reg(cam, 0x07, 0x18);
  37
  38         return err;
  39 }
  40
  41
  42 static int tas5130d1b_set_ctrl(struct sn9c102_device* cam,
  43                                const struct v4l2_control* ctrl)
  44 {
  45         int err = 0;
  46
  47         switch (ctrl->id) {
  48         case V4L2_CID_GAIN:
  49                 err += sn9c102_i2c_write(cam, 0x20, 0xf6 - ctrl->value);
  50                 break;
  51         case V4L2_CID_EXPOSURE:
  52                 err += sn9c102_i2c_write(cam, 0x40, 0x47 - ctrl->value);
  53                 break;
  54         default:
  55                 return -EINVAL;
  56         }
  57
  58         return err ? -EIO : 0;
  59 }
  60
  61
  62 static int tas5130d1b_set_crop(struct sn9c102_device* cam,
  63                                const struct v4l2_rect* rect)
  64 {
  65         struct sn9c102_sensor* s = sn9c102_get_sensor(cam);
  66         u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 104,
  67            v_start = (u8)(rect->top - s->cropcap.bounds.top) + 12;
  68         int err = 0;
  69
  70         err += sn9c102_write_reg(cam, h_start, 0x12);
  71         err += sn9c102_write_reg(cam, v_start, 0x13);
  72
  73         /* Do NOT change! */
  74         err += sn9c102_write_reg(cam, 0x1f, 0x1a);
  75         err += sn9c102_write_reg(cam, 0x1a, 0x1b);
  76         err += sn9c102_write_reg(cam, sn9c102_pread_reg(cam, 0x19), 0x19);
  77
  78         return err;
  79 }
  80
  81
  82 static int tas5130d1b_set_pix_format(struct sn9c102_device* cam,
  83                                      const struct v4l2_pix_format* pix)
  84 {
  85         int err = 0;
  86
  87         if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X)
  88                 err += sn9c102_write_reg(cam, 0x63, 0x19);
  89         else
  90                 err += sn9c102_write_reg(cam, 0xf3, 0x19);
  91
  92         return err;
  93 }
  94
  95
  96 static struct sn9c102_sensor tas5130d1b = {
  97         .name = "TAS5130D1B",
  98         .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
  99         .supported_bridge = BRIDGE_SN9C101 | BRIDGE_SN9C102,
 100         .sysfs_ops = SN9C102_I2C_WRITE,
 101         .frequency = SN9C102_I2C_100KHZ,
 102         .interface = SN9C102_I2C_3WIRES,
 103         .init = &tas5130d1b_init,
 104         .qctrl = {
 105                 {
 106                         .id = V4L2_CID_GAIN,
 107                         .type = V4L2_CTRL_TYPE_INTEGER,
 108                         .name = "global gain",
 109                         .minimum = 0x00,
 110                         .maximum = 0xf6,
 111                         .step = 0x02,
 112                         .default_value = 0x00,
 113                         .flags = 0,
 114                 },
 115                 {
 116                         .id = V4L2_CID_EXPOSURE,
 117                         .type = V4L2_CTRL_TYPE_INTEGER,
 118                         .name = "exposure",
 119                         .minimum = 0x00,
 120                         .maximum = 0x47,
 121                         .step = 0x01,
 122                         .default_value = 0x00,
 123                         .flags = 0,
 124                 },
 125         },
 126         .set_ctrl = &tas5130d1b_set_ctrl,
 127         .cropcap = {
 128                 .bounds = {
 129                         .left = 0,
 130                         .top = 0,
 131                         .width = 640,
 132                         .height = 480,
 133                 },
 134                 .defrect = {
 135                         .left = 0,
 136                         .top = 0,
 137                         .width = 640,
 138                         .height = 480,
 139                 },
 140         },
 141         .set_crop = &tas5130d1b_set_crop,
 142         .pix_format = {
 143                 .width = 640,
 144                 .height = 480,
 145                 .pixelformat = V4L2_PIX_FMT_SBGGR8,
 146                 .priv = 8,
 147         },
 148         .set_pix_format = &tas5130d1b_set_pix_format
 149 };
 150
 151
 152 int sn9c102_probe_tas5130d1b(struct sn9c102_device* cam)
 153 {
 154         const struct usb_device_id tas5130d1b_id_table[] = {
 155                 { USB_DEVICE(0x0c45, 0x6024), },
 156                 { USB_DEVICE(0x0c45, 0x6025), },
 157                 { USB_DEVICE(0x0c45, 0x60aa), },
 158                 { }
 159         };
 160
 161         /* Sensor detection is based on USB pid/vid */
 162         if (!sn9c102_match_id(cam, tas5130d1b_id_table))
 163                 return -ENODEV;
 164
 165         sn9c102_attach_sensor(cam, &tas5130d1b);
 166
 167         return 0;
 168 }