Merge branch 'drm-patches' of master.kernel.org:/pub/scm/linux/kernel/git/airlied...
[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
24
25 static int tas5130d1b_init(struct sn9c102_device* cam)
26 {
27         int err;
28
29         err = sn9c102_write_const_regs(cam, {0x01, 0x01}, {0x20, 0x17},
30                                        {0x04, 0x01}, {0x01, 0x10},
31                                        {0x00, 0x11}, {0x00, 0x14},
32                                        {0x60, 0x17}, {0x07, 0x18});
33
34         return err;
35 }
36
37
38 static int tas5130d1b_set_ctrl(struct sn9c102_device* cam,
39                                const struct v4l2_control* ctrl)
40 {
41         int err = 0;
42
43         switch (ctrl->id) {
44         case V4L2_CID_GAIN:
45                 err += sn9c102_i2c_write(cam, 0x20, 0xf6 - ctrl->value);
46                 break;
47         case V4L2_CID_EXPOSURE:
48                 err += sn9c102_i2c_write(cam, 0x40, 0x47 - ctrl->value);
49                 break;
50         default:
51                 return -EINVAL;
52         }
53
54         return err ? -EIO : 0;
55 }
56
57
58 static int tas5130d1b_set_crop(struct sn9c102_device* cam,
59                                const struct v4l2_rect* rect)
60 {
61         struct sn9c102_sensor* s = sn9c102_get_sensor(cam);
62         u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 104,
63            v_start = (u8)(rect->top - s->cropcap.bounds.top) + 12;
64         int err = 0;
65
66         err += sn9c102_write_reg(cam, h_start, 0x12);
67         err += sn9c102_write_reg(cam, v_start, 0x13);
68
69         /* Do NOT change! */
70         err += sn9c102_write_reg(cam, 0x1f, 0x1a);
71         err += sn9c102_write_reg(cam, 0x1a, 0x1b);
72         err += sn9c102_write_reg(cam, sn9c102_pread_reg(cam, 0x19), 0x19);
73
74         return err;
75 }
76
77
78 static int tas5130d1b_set_pix_format(struct sn9c102_device* cam,
79                                      const struct v4l2_pix_format* pix)
80 {
81         int err = 0;
82
83         if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X)
84                 err += sn9c102_write_reg(cam, 0x63, 0x19);
85         else
86                 err += sn9c102_write_reg(cam, 0xf3, 0x19);
87
88         return err;
89 }
90
91
92 static struct sn9c102_sensor tas5130d1b = {
93         .name = "TAS5130D1B",
94         .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
95         .supported_bridge = BRIDGE_SN9C101 | BRIDGE_SN9C102,
96         .sysfs_ops = SN9C102_I2C_WRITE,
97         .frequency = SN9C102_I2C_100KHZ,
98         .interface = SN9C102_I2C_3WIRES,
99         .init = &tas5130d1b_init,
100         .qctrl = {
101                 {
102                         .id = V4L2_CID_GAIN,
103                         .type = V4L2_CTRL_TYPE_INTEGER,
104                         .name = "global gain",
105                         .minimum = 0x00,
106                         .maximum = 0xf6,
107                         .step = 0x02,
108                         .default_value = 0x00,
109                         .flags = 0,
110                 },
111                 {
112                         .id = V4L2_CID_EXPOSURE,
113                         .type = V4L2_CTRL_TYPE_INTEGER,
114                         .name = "exposure",
115                         .minimum = 0x00,
116                         .maximum = 0x47,
117                         .step = 0x01,
118                         .default_value = 0x00,
119                         .flags = 0,
120                 },
121         },
122         .set_ctrl = &tas5130d1b_set_ctrl,
123         .cropcap = {
124                 .bounds = {
125                         .left = 0,
126                         .top = 0,
127                         .width = 640,
128                         .height = 480,
129                 },
130                 .defrect = {
131                         .left = 0,
132                         .top = 0,
133                         .width = 640,
134                         .height = 480,
135                 },
136         },
137         .set_crop = &tas5130d1b_set_crop,
138         .pix_format = {
139                 .width = 640,
140                 .height = 480,
141                 .pixelformat = V4L2_PIX_FMT_SBGGR8,
142                 .priv = 8,
143         },
144         .set_pix_format = &tas5130d1b_set_pix_format
145 };
146
147
148 int sn9c102_probe_tas5130d1b(struct sn9c102_device* cam)
149 {
150         const struct usb_device_id tas5130d1b_id_table[] = {
151                 { USB_DEVICE(0x0c45, 0x6024), },
152                 { USB_DEVICE(0x0c45, 0x6025), },
153                 { USB_DEVICE(0x0c45, 0x60aa), },
154                 { }
155         };
156
157         /* Sensor detection is based on USB pid/vid */
158         if (!sn9c102_match_id(cam, tas5130d1b_id_table))
159                 return -ENODEV;
160
161         sn9c102_attach_sensor(cam, &tas5130d1b);
162
163         return 0;
164 }