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 TAS5130D1B 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 tas5130d1b;
26
27
28static int tas5130d1b_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, 0x20, 0x17);
34 err += sn9c102_write_reg(cam, 0x04, 0x01);
35 err += sn9c102_write_reg(cam, 0x01, 0x10);
36 err += sn9c102_write_reg(cam, 0x00, 0x11);
37 err += sn9c102_write_reg(cam, 0x00, 0x14);
38 err += sn9c102_write_reg(cam, 0x60, 0x17);
39 err += sn9c102_write_reg(cam, 0x07, 0x18);
40
41 return err;
42}
43
44
45static int tas5130d1b_set_ctrl(struct sn9c102_device* cam,
46 const struct v4l2_control* ctrl)
47{
48 int err = 0;
49
50 switch (ctrl->id) {
51 case V4L2_CID_GAIN:
52 err += sn9c102_i2c_write(cam, 0x20, 0xf6 - ctrl->value);
53 break;
54 case V4L2_CID_EXPOSURE:
55 err += sn9c102_i2c_write(cam, 0x40, 0x47 - ctrl->value);
56 break;
57 default:
58 return -EINVAL;
59 }
60
61 return err ? -EIO : 0;
62}
63
64
65static int tas5130d1b_set_crop(struct sn9c102_device* cam,
66 const struct v4l2_rect* rect)
67{
68 struct sn9c102_sensor* s = &tas5130d1b;
69 u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 104,
70 v_start = (u8)(rect->top - s->cropcap.bounds.top) + 12;
71 int err = 0;
72
73 err += sn9c102_write_reg(cam, h_start, 0x12);
74 err += sn9c102_write_reg(cam, v_start, 0x13);
75
76 /* Do NOT change! */
77 err += sn9c102_write_reg(cam, 0x1f, 0x1a);
78 err += sn9c102_write_reg(cam, 0x1a, 0x1b);
79 err += sn9c102_write_reg(cam, sn9c102_pread_reg(cam, 0x19), 0x19);
80
81 return err;
82}
83
84
85static int tas5130d1b_set_pix_format(struct sn9c102_device* cam,
86 const struct v4l2_pix_format* pix)
87{
88 int err = 0;
89
90 if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X)
91 err += sn9c102_write_reg(cam, 0x63, 0x19);
92 else
93 err += sn9c102_write_reg(cam, 0xf3, 0x19);
94
95 return err;
96}
97
98
99static struct sn9c102_sensor tas5130d1b = {
100 .name = "TAS5130D1B",
101 .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
102 .sysfs_ops = SN9C102_I2C_WRITE,
103 .frequency = SN9C102_I2C_100KHZ,
104 .interface = SN9C102_I2C_3WIRES,
105 .init = &tas5130d1b_init,
106 .qctrl = {
107 {
108 .id = V4L2_CID_GAIN,
109 .type = V4L2_CTRL_TYPE_INTEGER,
110 .name = "global gain",
111 .minimum = 0x00,
112 .maximum = 0xf6,
113 .step = 0x02,
114 .default_value = 0x00,
115 .flags = 0,
116 },
117 {
118 .id = V4L2_CID_EXPOSURE,
119 .type = V4L2_CTRL_TYPE_INTEGER,
120 .name = "exposure",
121 .minimum = 0x00,
122 .maximum = 0x47,
123 .step = 0x01,
124 .default_value = 0x00,
125 .flags = 0,
126 },
127 },
128 .set_ctrl = &tas5130d1b_set_ctrl,
129 .cropcap = {
130 .bounds = {
131 .left = 0,
132 .top = 0,
133 .width = 640,
134 .height = 480,
135 },
136 .defrect = {
137 .left = 0,
138 .top = 0,
139 .width = 640,
140 .height = 480,
141 },
142 },
143 .set_crop = &tas5130d1b_set_crop,
144 .pix_format = {
145 .width = 640,
146 .height = 480,
147 .pixelformat = V4L2_PIX_FMT_SBGGR8,
148 .priv = 8,
149 },
150 .set_pix_format = &tas5130d1b_set_pix_format
151};
152
153
154int sn9c102_probe_tas5130d1b(struct sn9c102_device* cam)
155{
156 /* This sensor has no identifiers, so let's attach it anyway */
157 sn9c102_attach_sensor(cam, &tas5130d1b);
158
159 /* Sensor detection is based on USB pid/vid */
160 if (le16_to_cpu(tas5130d1b.usbdev->descriptor.idProduct) != 0x6025 &&
161 le16_to_cpu(tas5130d1b.usbdev->descriptor.idProduct) != 0x60aa)
162 return -ENODEV;
163
164 return 0;
165}