Merge git://git.infradead.org/mtd-2.6
[linux-2.6] / drivers / media / video / sn9c102 / sn9c102_tas5110c1b.c
1 /***************************************************************************
2  * Plug-in for TAS5110C1B 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 tas5110c1b_init(struct sn9c102_device* cam)
26 {
27         int err = 0;
28
29         err = sn9c102_write_const_regs(cam, {0x01, 0x01}, {0x44, 0x01},
30                                        {0x00, 0x10}, {0x00, 0x11},
31                                        {0x0a, 0x14}, {0x60, 0x17},
32                                        {0x06, 0x18}, {0xfb, 0x19});
33
34         err += sn9c102_i2c_write(cam, 0xc0, 0x80);
35
36         return err;
37 }
38
39
40 static int tas5110c1b_set_ctrl(struct sn9c102_device* cam,
41                                const struct v4l2_control* ctrl)
42 {
43         int err = 0;
44
45         switch (ctrl->id) {
46         case V4L2_CID_GAIN:
47                 err += sn9c102_i2c_write(cam, 0x20, 0xf6 - ctrl->value);
48                 break;
49         default:
50                 return -EINVAL;
51         }
52
53         return err ? -EIO : 0;
54 }
55
56
57 static int tas5110c1b_set_crop(struct sn9c102_device* cam,
58                                const struct v4l2_rect* rect)
59 {
60         struct sn9c102_sensor* s = sn9c102_get_sensor(cam);
61         int err = 0;
62         u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 69,
63            v_start = (u8)(rect->top - s->cropcap.bounds.top) + 9;
64
65         err += sn9c102_write_reg(cam, h_start, 0x12);
66         err += sn9c102_write_reg(cam, v_start, 0x13);
67
68         /* Don't change ! */
69         err += sn9c102_write_reg(cam, 0x14, 0x1a);
70         err += sn9c102_write_reg(cam, 0x0a, 0x1b);
71         err += sn9c102_write_reg(cam, sn9c102_pread_reg(cam, 0x19), 0x19);
72
73         return err;
74 }
75
76
77 static int tas5110c1b_set_pix_format(struct sn9c102_device* cam,
78                                      const struct v4l2_pix_format* pix)
79 {
80         int err = 0;
81
82         if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X)
83                 err += sn9c102_write_reg(cam, 0x2b, 0x19);
84         else
85                 err += sn9c102_write_reg(cam, 0xfb, 0x19);
86
87         return err;
88 }
89
90
91 static struct sn9c102_sensor tas5110c1b = {
92         .name = "TAS5110C1B",
93         .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
94         .supported_bridge = BRIDGE_SN9C101 | BRIDGE_SN9C102,
95         .sysfs_ops = SN9C102_I2C_WRITE,
96         .frequency = SN9C102_I2C_100KHZ,
97         .interface = SN9C102_I2C_3WIRES,
98         .init = &tas5110c1b_init,
99         .qctrl = {
100                 {
101                         .id = V4L2_CID_GAIN,
102                         .type = V4L2_CTRL_TYPE_INTEGER,
103                         .name = "global gain",
104                         .minimum = 0x00,
105                         .maximum = 0xf6,
106                         .step = 0x01,
107                         .default_value = 0x40,
108                         .flags = 0,
109                 },
110         },
111         .set_ctrl = &tas5110c1b_set_ctrl,
112         .cropcap = {
113                 .bounds = {
114                         .left = 0,
115                         .top = 0,
116                         .width = 352,
117                         .height = 288,
118                 },
119                 .defrect = {
120                         .left = 0,
121                         .top = 0,
122                         .width = 352,
123                         .height = 288,
124                 },
125         },
126         .set_crop = &tas5110c1b_set_crop,
127         .pix_format = {
128                 .width = 352,
129                 .height = 288,
130                 .pixelformat = V4L2_PIX_FMT_SBGGR8,
131                 .priv = 8,
132         },
133         .set_pix_format = &tas5110c1b_set_pix_format
134 };
135
136
137 int sn9c102_probe_tas5110c1b(struct sn9c102_device* cam)
138 {
139         const struct usb_device_id tas5110c1b_id_table[] = {
140                 { USB_DEVICE(0x0c45, 0x6001), },
141                 { USB_DEVICE(0x0c45, 0x6005), },
142                 { USB_DEVICE(0x0c45, 0x60ab), },
143                 { }
144         };
145
146         /* Sensor detection is based on USB pid/vid */
147         if (!sn9c102_match_id(cam, tas5110c1b_id_table))
148                 return -ENODEV;
149
150         sn9c102_attach_sensor(cam, &tas5110c1b);
151
152         return 0;
153 }