![Linus Torvalds](/assets/img/avatar_default.png)
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
308 lines
8.1 KiB
C
308 lines
8.1 KiB
C
/***************************************************************************
|
|
* Plug-in for PAS106B image sensor connected to the SN9C10x PC Camera *
|
|
* Controllers *
|
|
* *
|
|
* Copyright (C) 2004-2005 by Luca Risolia <luca.risolia@studio.unibo.it> *
|
|
* *
|
|
* This program is free software; you can redistribute it and/or modify *
|
|
* it under the terms of the GNU General Public License as published by *
|
|
* the Free Software Foundation; either version 2 of the License, or *
|
|
* (at your option) any later version. *
|
|
* *
|
|
* This program is distributed in the hope that it will be useful, *
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
|
|
* GNU General Public License for more details. *
|
|
* *
|
|
* You should have received a copy of the GNU General Public License *
|
|
* along with this program; if not, write to the Free Software *
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. *
|
|
***************************************************************************/
|
|
|
|
#include <linux/delay.h>
|
|
#include "sn9c102_sensor.h"
|
|
|
|
|
|
static struct sn9c102_sensor pas106b;
|
|
|
|
|
|
static int pas106b_init(struct sn9c102_device* cam)
|
|
{
|
|
int err = 0;
|
|
|
|
err += sn9c102_write_reg(cam, 0x00, 0x10);
|
|
err += sn9c102_write_reg(cam, 0x00, 0x11);
|
|
err += sn9c102_write_reg(cam, 0x00, 0x14);
|
|
err += sn9c102_write_reg(cam, 0x20, 0x17);
|
|
err += sn9c102_write_reg(cam, 0x20, 0x19);
|
|
err += sn9c102_write_reg(cam, 0x09, 0x18);
|
|
|
|
err += sn9c102_i2c_write(cam, 0x02, 0x0c);
|
|
err += sn9c102_i2c_write(cam, 0x05, 0x5a);
|
|
err += sn9c102_i2c_write(cam, 0x06, 0x88);
|
|
err += sn9c102_i2c_write(cam, 0x07, 0x80);
|
|
err += sn9c102_i2c_write(cam, 0x10, 0x06);
|
|
err += sn9c102_i2c_write(cam, 0x11, 0x06);
|
|
err += sn9c102_i2c_write(cam, 0x12, 0x00);
|
|
err += sn9c102_i2c_write(cam, 0x14, 0x02);
|
|
err += sn9c102_i2c_write(cam, 0x13, 0x01);
|
|
|
|
msleep(400);
|
|
|
|
return err;
|
|
}
|
|
|
|
|
|
static int pas106b_get_ctrl(struct sn9c102_device* cam,
|
|
struct v4l2_control* ctrl)
|
|
{
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_EXPOSURE:
|
|
{
|
|
int r1 = sn9c102_i2c_read(cam, 0x03),
|
|
r2 = sn9c102_i2c_read(cam, 0x04);
|
|
if (r1 < 0 || r2 < 0)
|
|
return -EIO;
|
|
ctrl->value = (r1 << 4) | (r2 & 0x0f);
|
|
}
|
|
return 0;
|
|
case V4L2_CID_RED_BALANCE:
|
|
if ((ctrl->value = sn9c102_i2c_read(cam, 0x0c)) < 0)
|
|
return -EIO;
|
|
ctrl->value &= 0x1f;
|
|
return 0;
|
|
case V4L2_CID_BLUE_BALANCE:
|
|
if ((ctrl->value = sn9c102_i2c_read(cam, 0x09)) < 0)
|
|
return -EIO;
|
|
ctrl->value &= 0x1f;
|
|
return 0;
|
|
case V4L2_CID_GAIN:
|
|
if ((ctrl->value = sn9c102_i2c_read(cam, 0x0e)) < 0)
|
|
return -EIO;
|
|
ctrl->value &= 0x1f;
|
|
return 0;
|
|
case V4L2_CID_CONTRAST:
|
|
if ((ctrl->value = sn9c102_i2c_read(cam, 0x0f)) < 0)
|
|
return -EIO;
|
|
ctrl->value &= 0x07;
|
|
return 0;
|
|
case SN9C102_V4L2_CID_GREEN_BALANCE:
|
|
if ((ctrl->value = sn9c102_i2c_read(cam, 0x0a)) < 0)
|
|
return -EIO;
|
|
ctrl->value = (ctrl->value & 0x1f) << 1;
|
|
return 0;
|
|
case SN9C102_V4L2_CID_DAC_MAGNITUDE:
|
|
if ((ctrl->value = sn9c102_i2c_read(cam, 0x08)) < 0)
|
|
return -EIO;
|
|
ctrl->value &= 0xf8;
|
|
return 0;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
|
|
static int pas106b_set_ctrl(struct sn9c102_device* cam,
|
|
const struct v4l2_control* ctrl)
|
|
{
|
|
int err = 0;
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_EXPOSURE:
|
|
err += sn9c102_i2c_write(cam, 0x03, ctrl->value >> 4);
|
|
err += sn9c102_i2c_write(cam, 0x04, ctrl->value & 0x0f);
|
|
break;
|
|
case V4L2_CID_RED_BALANCE:
|
|
err += sn9c102_i2c_write(cam, 0x0c, ctrl->value);
|
|
break;
|
|
case V4L2_CID_BLUE_BALANCE:
|
|
err += sn9c102_i2c_write(cam, 0x09, ctrl->value);
|
|
break;
|
|
case V4L2_CID_GAIN:
|
|
err += sn9c102_i2c_write(cam, 0x0e, ctrl->value);
|
|
break;
|
|
case V4L2_CID_CONTRAST:
|
|
err += sn9c102_i2c_write(cam, 0x0f, ctrl->value);
|
|
break;
|
|
case SN9C102_V4L2_CID_GREEN_BALANCE:
|
|
err += sn9c102_i2c_write(cam, 0x0a, ctrl->value >> 1);
|
|
err += sn9c102_i2c_write(cam, 0x0b, ctrl->value >> 1);
|
|
break;
|
|
case SN9C102_V4L2_CID_DAC_MAGNITUDE:
|
|
err += sn9c102_i2c_write(cam, 0x08, ctrl->value << 3);
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
err += sn9c102_i2c_write(cam, 0x13, 0x01);
|
|
|
|
return err ? -EIO : 0;
|
|
}
|
|
|
|
|
|
static int pas106b_set_crop(struct sn9c102_device* cam,
|
|
const struct v4l2_rect* rect)
|
|
{
|
|
struct sn9c102_sensor* s = &pas106b;
|
|
int err = 0;
|
|
u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 4,
|
|
v_start = (u8)(rect->top - s->cropcap.bounds.top) + 3;
|
|
|
|
err += sn9c102_write_reg(cam, h_start, 0x12);
|
|
err += sn9c102_write_reg(cam, v_start, 0x13);
|
|
|
|
return err;
|
|
}
|
|
|
|
|
|
static int pas106b_set_pix_format(struct sn9c102_device* cam,
|
|
const struct v4l2_pix_format* pix)
|
|
{
|
|
int err = 0;
|
|
|
|
if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X)
|
|
err += sn9c102_write_reg(cam, 0x2c, 0x17);
|
|
else
|
|
err += sn9c102_write_reg(cam, 0x20, 0x17);
|
|
|
|
return err;
|
|
}
|
|
|
|
|
|
static struct sn9c102_sensor pas106b = {
|
|
.name = "PAS106B",
|
|
.maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
|
|
.sysfs_ops = SN9C102_I2C_READ | SN9C102_I2C_WRITE,
|
|
.frequency = SN9C102_I2C_400KHZ | SN9C102_I2C_100KHZ,
|
|
.interface = SN9C102_I2C_2WIRES,
|
|
.i2c_slave_id = 0x40,
|
|
.init = &pas106b_init,
|
|
.qctrl = {
|
|
{
|
|
.id = V4L2_CID_EXPOSURE,
|
|
.type = V4L2_CTRL_TYPE_INTEGER,
|
|
.name = "exposure",
|
|
.minimum = 0x125,
|
|
.maximum = 0xfff,
|
|
.step = 0x001,
|
|
.default_value = 0x140,
|
|
.flags = 0,
|
|
},
|
|
{
|
|
.id = V4L2_CID_GAIN,
|
|
.type = V4L2_CTRL_TYPE_INTEGER,
|
|
.name = "global gain",
|
|
.minimum = 0x00,
|
|
.maximum = 0x1f,
|
|
.step = 0x01,
|
|
.default_value = 0x0d,
|
|
.flags = 0,
|
|
},
|
|
{
|
|
.id = V4L2_CID_CONTRAST,
|
|
.type = V4L2_CTRL_TYPE_INTEGER,
|
|
.name = "contrast",
|
|
.minimum = 0x00,
|
|
.maximum = 0x07,
|
|
.step = 0x01,
|
|
.default_value = 0x00, /* 0x00~0x03 have same effect */
|
|
.flags = 0,
|
|
},
|
|
{
|
|
.id = V4L2_CID_RED_BALANCE,
|
|
.type = V4L2_CTRL_TYPE_INTEGER,
|
|
.name = "red balance",
|
|
.minimum = 0x00,
|
|
.maximum = 0x1f,
|
|
.step = 0x01,
|
|
.default_value = 0x04,
|
|
.flags = 0,
|
|
},
|
|
{
|
|
.id = V4L2_CID_BLUE_BALANCE,
|
|
.type = V4L2_CTRL_TYPE_INTEGER,
|
|
.name = "blue balance",
|
|
.minimum = 0x00,
|
|
.maximum = 0x1f,
|
|
.step = 0x01,
|
|
.default_value = 0x06,
|
|
.flags = 0,
|
|
},
|
|
{
|
|
.id = SN9C102_V4L2_CID_GREEN_BALANCE,
|
|
.type = V4L2_CTRL_TYPE_INTEGER,
|
|
.name = "green balance",
|
|
.minimum = 0x00,
|
|
.maximum = 0x3e,
|
|
.step = 0x02,
|
|
.default_value = 0x02,
|
|
.flags = 0,
|
|
},
|
|
{
|
|
.id = SN9C102_V4L2_CID_DAC_MAGNITUDE,
|
|
.type = V4L2_CTRL_TYPE_INTEGER,
|
|
.name = "DAC magnitude",
|
|
.minimum = 0x00,
|
|
.maximum = 0x1f,
|
|
.step = 0x01,
|
|
.default_value = 0x01,
|
|
.flags = 0,
|
|
},
|
|
},
|
|
.get_ctrl = &pas106b_get_ctrl,
|
|
.set_ctrl = &pas106b_set_ctrl,
|
|
.cropcap = {
|
|
.bounds = {
|
|
.left = 0,
|
|
.top = 0,
|
|
.width = 352,
|
|
.height = 288,
|
|
},
|
|
.defrect = {
|
|
.left = 0,
|
|
.top = 0,
|
|
.width = 352,
|
|
.height = 288,
|
|
},
|
|
},
|
|
.set_crop = &pas106b_set_crop,
|
|
.pix_format = {
|
|
.width = 352,
|
|
.height = 288,
|
|
.pixelformat = V4L2_PIX_FMT_SBGGR8,
|
|
.priv = 8, /* we use this field as 'bits per pixel' */
|
|
},
|
|
.set_pix_format = &pas106b_set_pix_format
|
|
};
|
|
|
|
|
|
int sn9c102_probe_pas106b(struct sn9c102_device* cam)
|
|
{
|
|
int r0 = 0, r1 = 0, err = 0;
|
|
unsigned int pid = 0;
|
|
|
|
/*
|
|
Minimal initialization to enable the I2C communication
|
|
NOTE: do NOT change the values!
|
|
*/
|
|
err += sn9c102_write_reg(cam, 0x01, 0x01); /* sensor power down */
|
|
err += sn9c102_write_reg(cam, 0x00, 0x01); /* sensor power on */
|
|
err += sn9c102_write_reg(cam, 0x28, 0x17); /* sensor clock at 24 MHz */
|
|
if (err)
|
|
return -EIO;
|
|
|
|
r0 = sn9c102_i2c_try_read(cam, &pas106b, 0x00);
|
|
r1 = sn9c102_i2c_try_read(cam, &pas106b, 0x01);
|
|
|
|
if (r0 < 0 || r1 < 0)
|
|
return -EIO;
|
|
|
|
pid = (r0 << 11) | ((r1 & 0xf0) >> 4);
|
|
if (pid != 0x007)
|
|
return -ENODEV;
|
|
|
|
sn9c102_attach_sensor(cam, &pas106b);
|
|
|
|
return 0;
|
|
}
|