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Linux/drivers/staging/media/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 }
166 

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