Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
[linux-2.6] / 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 }