a7f71139615274382a67f4d7c5dab79f55ae4cba
[linux-2.6.git] / 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 }