1 /***************************************************************************
2 * Driver for PAS106B image sensor connected to the SN9C10[12] PC Camera *
5 * Copyright (C) 2004 by Luca Risolia <luca.risolia@studio.unibo.it> *
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. *
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. *
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 ***************************************************************************/
22 #include <linux/delay.h>
23 #include "sn9c102_sensor.h"
26 static struct sn9c102_sensor pas106b;
29 static int pas106b_init(struct sn9c102_device* cam)
33 err += sn9c102_write_reg(cam, 0x00, 0x10);
34 err += sn9c102_write_reg(cam, 0x00, 0x11);
35 err += sn9c102_write_reg(cam, 0x00, 0x14);
36 err += sn9c102_write_reg(cam, 0x20, 0x17);
37 err += sn9c102_write_reg(cam, 0x20, 0x19);
38 err += sn9c102_write_reg(cam, 0x09, 0x18);
40 err += sn9c102_i2c_write(cam, 0x02, 0x0c);
41 err += sn9c102_i2c_write(cam, 0x03, 0x12);
42 err += sn9c102_i2c_write(cam, 0x04, 0x05);
43 err += sn9c102_i2c_write(cam, 0x05, 0x22);
44 err += sn9c102_i2c_write(cam, 0x06, 0xac);
45 err += sn9c102_i2c_write(cam, 0x07, 0x00);
46 err += sn9c102_i2c_write(cam, 0x08, 0x01);
47 err += sn9c102_i2c_write(cam, 0x0a, 0x00);
48 err += sn9c102_i2c_write(cam, 0x0b, 0x00);
49 err += sn9c102_i2c_write(cam, 0x0d, 0x00);
50 err += sn9c102_i2c_write(cam, 0x10, 0x06);
51 err += sn9c102_i2c_write(cam, 0x11, 0x06);
52 err += sn9c102_i2c_write(cam, 0x12, 0x00);
53 err += sn9c102_i2c_write(cam, 0x14, 0x02);
54 err += sn9c102_i2c_write(cam, 0x13, 0x01);
62 static int pas106b_get_ctrl(struct sn9c102_device* cam,
63 struct v4l2_control* ctrl)
66 case V4L2_CID_RED_BALANCE:
67 return (ctrl->value = sn9c102_i2c_read(cam, 0x0c))<0 ? -EIO:0;
68 case V4L2_CID_BLUE_BALANCE:
69 return (ctrl->value = sn9c102_i2c_read(cam, 0x09))<0 ? -EIO:0;
70 case V4L2_CID_BRIGHTNESS:
71 return (ctrl->value = sn9c102_i2c_read(cam, 0x0e))<0 ? -EIO:0;
78 static int pas106b_set_ctrl(struct sn9c102_device* cam,
79 const struct v4l2_control* ctrl)
84 case V4L2_CID_RED_BALANCE:
85 err += sn9c102_i2c_write(cam, 0x0c, ctrl->value & 0x1f);
87 case V4L2_CID_BLUE_BALANCE:
88 err += sn9c102_i2c_write(cam, 0x09, ctrl->value & 0x1f);
90 case V4L2_CID_BRIGHTNESS:
91 err += sn9c102_i2c_write(cam, 0x0e, ctrl->value & 0x1f);
96 err += sn9c102_i2c_write(cam, 0x13, 0x01);
102 static int pas106b_set_crop(struct sn9c102_device* cam,
103 const struct v4l2_rect* rect)
105 struct sn9c102_sensor* s = &pas106b;
107 u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 4,
108 v_start = (u8)(rect->top - s->cropcap.bounds.top) + 3;
110 err += sn9c102_write_reg(cam, h_start, 0x12);
111 err += sn9c102_write_reg(cam, v_start, 0x13);
117 static struct sn9c102_sensor pas106b = {
119 .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
120 .frequency = SN9C102_I2C_400KHZ | SN9C102_I2C_100KHZ,
121 .interface = SN9C102_I2C_2WIRES,
122 .slave_read_id = 0x40,
123 .slave_write_id = 0x40,
124 .init = &pas106b_init,
127 .id = V4L2_CID_RED_BALANCE,
128 .type = V4L2_CTRL_TYPE_INTEGER,
129 .name = "red balance",
133 .default_value = 0x03,
137 .id = V4L2_CID_BLUE_BALANCE,
138 .type = V4L2_CTRL_TYPE_INTEGER,
139 .name = "blue balance",
143 .default_value = 0x02,
147 .id = V4L2_CID_BRIGHTNESS,
148 .type = V4L2_CTRL_TYPE_INTEGER,
149 .name = "brightness",
153 .default_value = 0x06,
157 .get_ctrl = &pas106b_get_ctrl,
158 .set_ctrl = &pas106b_set_ctrl,
173 .set_crop = &pas106b_set_crop,
177 .pixelformat = V4L2_PIX_FMT_SBGGR8,
178 .priv = 8, /* we use this field as 'bits per pixel' */
183 int sn9c102_probe_pas106b(struct sn9c102_device* cam)
185 int r0 = 0, r1 = 0, err = 0;
186 unsigned int pid = 0;
188 /* Minimal initialization to enable the I2C communication
189 NOTE: do NOT change the values! */
190 err += sn9c102_write_reg(cam, 0x01, 0x01); /* sensor power down */
191 err += sn9c102_write_reg(cam, 0x00, 0x01); /* sensor power on */
192 err += sn9c102_write_reg(cam, 0x28, 0x17); /* sensor clock at 48 MHz */
196 r0 = sn9c102_i2c_try_read(cam, &pas106b, 0x00);
197 r1 = sn9c102_i2c_try_read(cam, &pas106b, 0x01);
199 if (r0 < 0 || r1 < 0)
202 pid = (r0 << 11) | ((r1 & 0xf0) >> 4);
206 sn9c102_attach_sensor(cam, &pas106b);