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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/***************************************************************************
2 * Plug-in for TAS5110C1B image sensor connected to the SN9C10x PC Camera *
3 * Controllers *
4 * *
5 * Copyright (C) 2004-2005 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
25static struct sn9c102_sensor tas5110c1b;
26
27static struct v4l2_control tas5110c1b_gain;
28
29
30static int tas5110c1b_init(struct sn9c102_device* cam)
31{
32 int err = 0;
33
34 err += sn9c102_write_reg(cam, 0x01, 0x01);
35 err += sn9c102_write_reg(cam, 0x44, 0x01);
36 err += sn9c102_write_reg(cam, 0x00, 0x10);
37 err += sn9c102_write_reg(cam, 0x00, 0x11);
38 err += sn9c102_write_reg(cam, 0x0a, 0x14);
39 err += sn9c102_write_reg(cam, 0x60, 0x17);
40 err += sn9c102_write_reg(cam, 0x06, 0x18);
41 err += sn9c102_write_reg(cam, 0xfb, 0x19);
42
43 err += sn9c102_i2c_write(cam, 0xc0, 0x80);
44
45 return err;
46}
47
48
49static int tas5110c1b_get_ctrl(struct sn9c102_device* cam,
50 struct v4l2_control* ctrl)
51{
52 switch (ctrl->id) {
53 case V4L2_CID_GAIN:
54 ctrl->value = tas5110c1b_gain.value;
55 break;
56 default:
57 return -EINVAL;
58 }
59
60 return 0;
61}
62
63
64static int tas5110c1b_set_ctrl(struct sn9c102_device* cam,
65 const struct v4l2_control* ctrl)
66{
67 int err = 0;
68
69 switch (ctrl->id) {
70 case V4L2_CID_GAIN:
71 if (!(err += sn9c102_i2c_write(cam, 0x20, 0xf6 - ctrl->value)))
72 tas5110c1b_gain.value = ctrl->value;
73 break;
74 default:
75 return -EINVAL;
76 }
77
78 return err ? -EIO : 0;
79}
80
81
82static int tas5110c1b_set_crop(struct sn9c102_device* cam,
83 const struct v4l2_rect* rect)
84{
85 struct sn9c102_sensor* s = &tas5110c1b;
86 int err = 0;
87 u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 69,
88 v_start = (u8)(rect->top - s->cropcap.bounds.top) + 9;
89
90 err += sn9c102_write_reg(cam, h_start, 0x12);
91 err += sn9c102_write_reg(cam, v_start, 0x13);
92
93 /* Don't change ! */
94 err += sn9c102_write_reg(cam, 0x14, 0x1a);
95 err += sn9c102_write_reg(cam, 0x0a, 0x1b);
96 err += sn9c102_write_reg(cam, sn9c102_pread_reg(cam, 0x19), 0x19);
97
98 return err;
99}
100
101
102static int tas5110c1b_set_pix_format(struct sn9c102_device* cam,
103 const struct v4l2_pix_format* pix)
104{
105 int err = 0;
106
107 if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X)
108 err += sn9c102_write_reg(cam, 0x2b, 0x19);
109 else
110 err += sn9c102_write_reg(cam, 0xfb, 0x19);
111
112 return err;
113}
114
115
116static struct sn9c102_sensor tas5110c1b = {
117 .name = "TAS5110C1B",
118 .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
119 .sysfs_ops = SN9C102_I2C_WRITE,
120 .frequency = SN9C102_I2C_100KHZ,
121 .interface = SN9C102_I2C_3WIRES,
122 .init = &tas5110c1b_init,
123 .qctrl = {
124 {
125 .id = V4L2_CID_GAIN,
126 .type = V4L2_CTRL_TYPE_INTEGER,
127 .name = "global gain",
128 .minimum = 0x00,
129 .maximum = 0xf6,
130 .step = 0x01,
131 .default_value = 0x40,
132 .flags = 0,
133 },
134 },
135 .set_ctrl = &tas5110c1b_set_ctrl,
136 .cropcap = {
137 .bounds = {
138 .left = 0,
139 .top = 0,
140 .width = 352,
141 .height = 288,
142 },
143 .defrect = {
144 .left = 0,
145 .top = 0,
146 .width = 352,
147 .height = 288,
148 },
149 },
150 .get_ctrl = &tas5110c1b_get_ctrl,
151 .set_crop = &tas5110c1b_set_crop,
152 .pix_format = {
153 .width = 352,
154 .height = 288,
155 .pixelformat = V4L2_PIX_FMT_SBGGR8,
156 .priv = 8,
157 },
158 .set_pix_format = &tas5110c1b_set_pix_format
159};
160
161
162int sn9c102_probe_tas5110c1b(struct sn9c102_device* cam)
163{
164 /* This sensor has no identifiers, so let's attach it anyway */
165 sn9c102_attach_sensor(cam, &tas5110c1b);
166
167 /* Sensor detection is based on USB pid/vid */
168 if (le16_to_cpu(tas5110c1b.usbdev->descriptor.idProduct) != 0x6001 &&
169 le16_to_cpu(tas5110c1b.usbdev->descriptor.idProduct) != 0x6005 &&
170 le16_to_cpu(tas5110c1b.usbdev->descriptor.idProduct) != 0x60ab)
171 return -ENODEV;
172
173 return 0;
174}