release/src-rt-6.x.4708/linux/linux-2.6.36/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 #include "sn9c102_devtable.h"
  24
  25
  26 static int tas5130d1b_init(struct sn9c102_device* cam)
  27 {
  28         int err;
  29
  30         err = sn9c102_write_const_regs(cam, {0x01, 0x01}, {0x20, 0x17},
  31                                        {0x04, 0x01}, {0x01, 0x10},
  32                                        {0x00, 0x11}, {0x00, 0x14},
  33                                        {0x60, 0x17}, {0x07, 0x18});
  34
  35         return err;
  36 }
  37
  38
  39 static int tas5130d1b_set_ctrl(struct sn9c102_device* cam,
  40                                const struct v4l2_control* ctrl)
  41 {
  42         int err = 0;
  43
  44         switch (ctrl->id) {
  45         case V4L2_CID_GAIN:
  46                 err += sn9c102_i2c_write(cam, 0x20, 0xf6 - ctrl->value);
  47                 break;
  48         case V4L2_CID_EXPOSURE:
  49                 err += sn9c102_i2c_write(cam, 0x40, 0x47 - ctrl->value);
  50                 break;
  51         default:
  52                 return -EINVAL;
  53         }
  54
  55         return err ? -EIO : 0;
  56 }
  57
  58
  59 static int tas5130d1b_set_crop(struct sn9c102_device* cam,
  60                                const struct v4l2_rect* rect)
  61 {
  62         struct sn9c102_sensor* s = sn9c102_get_sensor(cam);
  63         u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 104,
  64            v_start = (u8)(rect->top - s->cropcap.bounds.top) + 12;
  65         int err = 0;
  66
  67         err += sn9c102_write_reg(cam, h_start, 0x12);
  68         err += sn9c102_write_reg(cam, v_start, 0x13);
  69
  70         /* Do NOT change! */
  71         err += sn9c102_write_reg(cam, 0x1f, 0x1a);
  72         err += sn9c102_write_reg(cam, 0x1a, 0x1b);
  73         err += sn9c102_write_reg(cam, sn9c102_pread_reg(cam, 0x19), 0x19);
  74
  75         return err;
  76 }
  77
  78
  79 static int tas5130d1b_set_pix_format(struct sn9c102_device* cam,
  80                                      const struct v4l2_pix_format* pix)
  81 {
  82         int err = 0;
  83
  84         if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X)
  85                 err += sn9c102_write_reg(cam, 0x63, 0x19);
  86         else
  87                 err += sn9c102_write_reg(cam, 0xf3, 0x19);
  88
  89         return err;
  90 }
  91
  92
  93 static const struct sn9c102_sensor tas5130d1b = {
  94         .name = "TAS5130D1B",
  95         .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
  96         .supported_bridge = BRIDGE_SN9C101 | BRIDGE_SN9C102,
  97         .sysfs_ops = SN9C102_I2C_WRITE,
  98         .frequency = SN9C102_I2C_100KHZ,
  99         .interface = SN9C102_I2C_3WIRES,
 100         .init = &tas5130d1b_init,
 101         .qctrl = {
 102                 {
 103                         .id = V4L2_CID_GAIN,
 104                         .type = V4L2_CTRL_TYPE_INTEGER,
 105                         .name = "global gain",
 106                         .minimum = 0x00,
 107                         .maximum = 0xf6,
 108                         .step = 0x02,
 109                         .default_value = 0x00,
 110                         .flags = 0,
 111                 },
 112                 {
 113                         .id = V4L2_CID_EXPOSURE,
 114                         .type = V4L2_CTRL_TYPE_INTEGER,
 115                         .name = "exposure",
 116                         .minimum = 0x00,
 117                         .maximum = 0x47,
 118                         .step = 0x01,
 119                         .default_value = 0x00,
 120                         .flags = 0,
 121                 },
 122         },
 123         .set_ctrl = &tas5130d1b_set_ctrl,
 124         .cropcap = {
 125                 .bounds = {
 126                         .left = 0,
 127                         .top = 0,
 128                         .width = 640,
 129                         .height = 480,
 130                 },
 131                 .defrect = {
 132                         .left = 0,
 133                         .top = 0,
 134                         .width = 640,
 135                         .height = 480,
 136                 },
 137         },
 138         .set_crop = &tas5130d1b_set_crop,
 139         .pix_format = {
 140                 .width = 640,
 141                 .height = 480,
 142                 .pixelformat = V4L2_PIX_FMT_SBGGR8,
 143                 .priv = 8,
 144         },
 145         .set_pix_format = &tas5130d1b_set_pix_format
 146 };
 147
 148
 149 int sn9c102_probe_tas5130d1b(struct sn9c102_device* cam)
 150 {
 151         const struct usb_device_id tas5130d1b_id_table[] = {
 152                 { USB_DEVICE(0x0c45, 0x6024), },
 153                 { USB_DEVICE(0x0c45, 0x6025), },
 154                 { USB_DEVICE(0x0c45, 0x60aa), },
 155                 { }
 156         };
 157
 158         /* Sensor detection is based on USB pid/vid */
 159         if (!sn9c102_match_id(cam, tas5130d1b_id_table))
 160                 return -ENODEV;
 161
 162         sn9c102_attach_sensor(cam, &tas5130d1b);
 163
 164         return 0;
 165 }