tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/***************************************************************************
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
27
28static int tas5110c1b_init(struct sn9c102_device* cam)
29{
30 int err = 0;
31
32 err += sn9c102_write_reg(cam, 0x01, 0x01);
33 err += sn9c102_write_reg(cam, 0x44, 0x01);
34 err += sn9c102_write_reg(cam, 0x00, 0x10);
35 err += sn9c102_write_reg(cam, 0x00, 0x11);
36 err += sn9c102_write_reg(cam, 0x0a, 0x14);
37 err += sn9c102_write_reg(cam, 0x60, 0x17);
38 err += sn9c102_write_reg(cam, 0x06, 0x18);
39 err += sn9c102_write_reg(cam, 0xfb, 0x19);
40
41 err += sn9c102_i2c_write(cam, 0xc0, 0x80);
42
43 return err;
44}
45
46
47static int tas5110c1b_set_ctrl(struct sn9c102_device* cam,
48 const struct v4l2_control* ctrl)
49{
50 int err = 0;
51
52 switch (ctrl->id) {
53 case V4L2_CID_GAIN:
54 err += sn9c102_i2c_write(cam, 0x20, 0xf6 - ctrl->value);
55 break;
56 default:
57 return -EINVAL;
58 }
59
60 return err ? -EIO : 0;
61}
62
63
64static int tas5110c1b_set_crop(struct sn9c102_device* cam,
65 const struct v4l2_rect* rect)
66{
67 struct sn9c102_sensor* s = &tas5110c1b;
68 int err = 0;
69 u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 69,
70 v_start = (u8)(rect->top - s->cropcap.bounds.top) + 9;
71
72 err += sn9c102_write_reg(cam, h_start, 0x12);
73 err += sn9c102_write_reg(cam, v_start, 0x13);
74
75 /* Don't change ! */
76 err += sn9c102_write_reg(cam, 0x14, 0x1a);
77 err += sn9c102_write_reg(cam, 0x0a, 0x1b);
78 err += sn9c102_write_reg(cam, sn9c102_pread_reg(cam, 0x19), 0x19);
79
80 return err;
81}
82
83
84static int tas5110c1b_set_pix_format(struct sn9c102_device* cam,
85 const struct v4l2_pix_format* pix)
86{
87 int err = 0;
88
89 if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X)
90 err += sn9c102_write_reg(cam, 0x2b, 0x19);
91 else
92 err += sn9c102_write_reg(cam, 0xfb, 0x19);
93
94 return err;
95}
96
97
98static struct sn9c102_sensor tas5110c1b = {
99 .name = "TAS5110C1B",
100 .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
101 .sysfs_ops = SN9C102_I2C_WRITE,
102 .frequency = SN9C102_I2C_100KHZ,
103 .interface = SN9C102_I2C_3WIRES,
104 .init = &tas5110c1b_init,
105 .qctrl = {
106 {
107 .id = V4L2_CID_GAIN,
108 .type = V4L2_CTRL_TYPE_INTEGER,
109 .name = "global gain",
110 .minimum = 0x00,
111 .maximum = 0xf6,
112 .step = 0x01,
113 .default_value = 0x40,
114 .flags = 0,
115 },
116 },
117 .set_ctrl = &tas5110c1b_set_ctrl,
118 .cropcap = {
119 .bounds = {
120 .left = 0,
121 .top = 0,
122 .width = 352,
123 .height = 288,
124 },
125 .defrect = {
126 .left = 0,
127 .top = 0,
128 .width = 352,
129 .height = 288,
130 },
131 },
132 .set_crop = &tas5110c1b_set_crop,
133 .pix_format = {
134 .width = 352,
135 .height = 288,
136 .pixelformat = V4L2_PIX_FMT_SBGGR8,
137 .priv = 8,
138 },
139 .set_pix_format = &tas5110c1b_set_pix_format
140};
141
142
143int sn9c102_probe_tas5110c1b(struct sn9c102_device* cam)
144{
145 /* This sensor has no identifiers, so let's attach it anyway */
146 sn9c102_attach_sensor(cam, &tas5110c1b);
147
148 /* Sensor detection is based on USB pid/vid */
149 if (le16_to_cpu(tas5110c1b.usbdev->descriptor.idProduct) != 0x6001 &&
150 le16_to_cpu(tas5110c1b.usbdev->descriptor.idProduct) != 0x6005 &&
151 le16_to_cpu(tas5110c1b.usbdev->descriptor.idProduct) != 0x60ab)
152 return -ENODEV;
153
154 return 0;
155}