git.oblomov.eu Git - linux-2.6/blob - drivers/usb/media/sn9c102_tas5130d1b.c

   1 /***************************************************************************
   2  * Plug-in for TAS5130D1B 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 tas5130d1b;
  26
  27
  28 static int tas5130d1b_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, 0x20, 0x17);
  34         err += sn9c102_write_reg(cam, 0x04, 0x01);
  35         err += sn9c102_write_reg(cam, 0x01, 0x10);
  36         err += sn9c102_write_reg(cam, 0x00, 0x11);
  37         err += sn9c102_write_reg(cam, 0x00, 0x14);
  38         err += sn9c102_write_reg(cam, 0x60, 0x17);
  39         err += sn9c102_write_reg(cam, 0x07, 0x18);
  40
  41         return err;
  42 }
  43
  44
  45 static int tas5130d1b_set_ctrl(struct sn9c102_device* cam,
  46                                const struct v4l2_control* ctrl)
  47 {
  48         int err = 0;
  49
  50         switch (ctrl->id) {
  51         case V4L2_CID_GAIN:
  52                 err += sn9c102_i2c_write(cam, 0x20, 0xf6 - ctrl->value);
  53                 break;
  54         case V4L2_CID_EXPOSURE:
  55                 err += sn9c102_i2c_write(cam, 0x40, 0x47 - ctrl->value);
  56                 break;
  57         default:
  58                 return -EINVAL;
  59         }
  60
  61         return err ? -EIO : 0;
  62 }
  63
  64
  65 static int tas5130d1b_set_crop(struct sn9c102_device* cam,
  66                                const struct v4l2_rect* rect)
  67 {
  68         struct sn9c102_sensor* s = &tas5130d1b;
  69         u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 104,
  70            v_start = (u8)(rect->top - s->cropcap.bounds.top) + 12;
  71         int err = 0;
  72
  73         err += sn9c102_write_reg(cam, h_start, 0x12);
  74         err += sn9c102_write_reg(cam, v_start, 0x13);
  75
  76         /* Do NOT change! */
  77         err += sn9c102_write_reg(cam, 0x1f, 0x1a);
  78         err += sn9c102_write_reg(cam, 0x1a, 0x1b);
  79         err += sn9c102_write_reg(cam, sn9c102_pread_reg(cam, 0x19), 0x19);
  80
  81         return err;
  82 }
  83
  84
  85 static int tas5130d1b_set_pix_format(struct sn9c102_device* cam,
  86                                      const struct v4l2_pix_format* pix)
  87 {
  88         int err = 0;
  89
  90         if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X)
  91                 err += sn9c102_write_reg(cam, 0x63, 0x19);
  92         else
  93                 err += sn9c102_write_reg(cam, 0xf3, 0x19);
  94
  95         return err;
  96 }
  97
  98
  99 static struct sn9c102_sensor tas5130d1b = {
 100         .name = "TAS5130D1B",
 101         .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
 102         .sysfs_ops = SN9C102_I2C_WRITE,
 103         .frequency = SN9C102_I2C_100KHZ,
 104         .interface = SN9C102_I2C_3WIRES,
 105         .init = &tas5130d1b_init,
 106         .qctrl = {
 107                 {
 108                         .id = V4L2_CID_GAIN,
 109                         .type = V4L2_CTRL_TYPE_INTEGER,
 110                         .name = "global gain",
 111                         .minimum = 0x00,
 112                         .maximum = 0xf6,
 113                         .step = 0x02,
 114                         .default_value = 0x00,
 115                         .flags = 0,
 116                 },
 117                 {
 118                         .id = V4L2_CID_EXPOSURE,
 119                         .type = V4L2_CTRL_TYPE_INTEGER,
 120                         .name = "exposure",
 121                         .minimum = 0x00,
 122                         .maximum = 0x47,
 123                         .step = 0x01,
 124                         .default_value = 0x00,
 125                         .flags = 0,
 126                 },
 127         },
 128         .set_ctrl = &tas5130d1b_set_ctrl,
 129         .cropcap = {
 130                 .bounds = {
 131                         .left = 0,
 132                         .top = 0,
 133                         .width = 640,
 134                         .height = 480,
 135                 },
 136                 .defrect = {
 137                         .left = 0,
 138                         .top = 0,
 139                         .width = 640,
 140                         .height = 480,
 141                 },
 142         },
 143         .set_crop = &tas5130d1b_set_crop,
 144         .pix_format = {
 145                 .width = 640,
 146                 .height = 480,
 147                 .pixelformat = V4L2_PIX_FMT_SBGGR8,
 148                 .priv = 8,
 149         },
 150         .set_pix_format = &tas5130d1b_set_pix_format
 151 };
 152
 153
 154 int sn9c102_probe_tas5130d1b(struct sn9c102_device* cam)
 155 {
 156         /* This sensor has no identifiers, so let's attach it anyway */
 157         sn9c102_attach_sensor(cam, &tas5130d1b);
 158
 159         /* Sensor detection is based on USB pid/vid */
 160         if (le16_to_cpu(tas5130d1b.usbdev->descriptor.idProduct) != 0x6025 &&
 161             le16_to_cpu(tas5130d1b.usbdev->descriptor.idProduct) != 0x60aa)
 162                 return -ENODEV;
 163
 164         return 0;
 165 }