git.oblomov.eu Git - linux-2.6/blob - 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;
  28
  29         err = sn9c102_write_const_regs(cam, {0x01, 0x01}, {0x20, 0x17},
  30                                        {0x04, 0x01}, {0x01, 0x10},
  31                                        {0x00, 0x11}, {0x00, 0x14},
  32                                        {0x60, 0x17}, {0x07, 0x18});
  33
  34         return err;
  35 }
  36
  37
  38 static int tas5130d1b_set_ctrl(struct sn9c102_device* cam,
  39                                const struct v4l2_control* ctrl)
  40 {
  41         int err = 0;
  42
  43         switch (ctrl->id) {
  44         case V4L2_CID_GAIN:
  45                 err += sn9c102_i2c_write(cam, 0x20, 0xf6 - ctrl->value);
  46                 break;
  47         case V4L2_CID_EXPOSURE:
  48                 err += sn9c102_i2c_write(cam, 0x40, 0x47 - ctrl->value);
  49                 break;
  50         default:
  51                 return -EINVAL;
  52         }
  53
  54         return err ? -EIO : 0;
  55 }
  56
  57
  58 static int tas5130d1b_set_crop(struct sn9c102_device* cam,
  59                                const struct v4l2_rect* rect)
  60 {
  61         struct sn9c102_sensor* s = sn9c102_get_sensor(cam);
  62         u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 104,
  63            v_start = (u8)(rect->top - s->cropcap.bounds.top) + 12;
  64         int err = 0;
  65
  66         err += sn9c102_write_reg(cam, h_start, 0x12);
  67         err += sn9c102_write_reg(cam, v_start, 0x13);
  68
  69         /* Do NOT change! */
  70         err += sn9c102_write_reg(cam, 0x1f, 0x1a);
  71         err += sn9c102_write_reg(cam, 0x1a, 0x1b);
  72         err += sn9c102_write_reg(cam, sn9c102_pread_reg(cam, 0x19), 0x19);
  73
  74         return err;
  75 }
  76
  77
  78 static int tas5130d1b_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, 0x63, 0x19);
  85         else
  86                 err += sn9c102_write_reg(cam, 0xf3, 0x19);
  87
  88         return err;
  89 }
  90
  91
  92 static struct sn9c102_sensor tas5130d1b = {
  93         .name = "TAS5130D1B",
  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 = &tas5130d1b_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 = 0x02,
 108                         .default_value = 0x00,
 109                         .flags = 0,
 110                 },
 111                 {
 112                         .id = V4L2_CID_EXPOSURE,
 113                         .type = V4L2_CTRL_TYPE_INTEGER,
 114                         .name = "exposure",
 115                         .minimum = 0x00,
 116                         .maximum = 0x47,
 117                         .step = 0x01,
 118                         .default_value = 0x00,
 119                         .flags = 0,
 120                 },
 121         },
 122         .set_ctrl = &tas5130d1b_set_ctrl,
 123         .cropcap = {
 124                 .bounds = {
 125                         .left = 0,
 126                         .top = 0,
 127                         .width = 640,
 128                         .height = 480,
 129                 },
 130                 .defrect = {
 131                         .left = 0,
 132                         .top = 0,
 133                         .width = 640,
 134                         .height = 480,
 135                 },
 136         },
 137         .set_crop = &tas5130d1b_set_crop,
 138         .pix_format = {
 139                 .width = 640,
 140                 .height = 480,
 141                 .pixelformat = V4L2_PIX_FMT_SBGGR8,
 142                 .priv = 8,
 143         },
 144         .set_pix_format = &tas5130d1b_set_pix_format
 145 };
 146
 147
 148 int sn9c102_probe_tas5130d1b(struct sn9c102_device* cam)
 149 {
 150         const struct usb_device_id tas5130d1b_id_table[] = {
 151                 { USB_DEVICE(0x0c45, 0x6024), },
 152                 { USB_DEVICE(0x0c45, 0x6025), },
 153                 { USB_DEVICE(0x0c45, 0x60aa), },
 154                 { }
 155         };
 156
 157         /* Sensor detection is based on USB pid/vid */
 158         if (!sn9c102_match_id(cam, tas5130d1b_id_table))
 159                 return -ENODEV;
 160
 161         sn9c102_attach_sensor(cam, &tas5130d1b);
 162
 163         return 0;
 164 }