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/***************************************************************************
* Plug-in for HV7131D image sensor connected to the SN9C1xx PC Camera *
* Controllers *
* *
* Copyright (C) 2004-2007 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 "sn9c102_sensor.h"
#include "sn9c102_devtable.h"
static int hv7131d_init(struct sn9c102_device* cam)
{
int err;
err = sn9c102_write_const_regs(cam, {0x00, 0x10}, {0x00, 0x11},
{0x00, 0x14}, {0x60, 0x17},
{0x0e, 0x18}, {0xf2, 0x19});
err += sn9c102_i2c_write(cam, 0x01, 0x04);
err += sn9c102_i2c_write(cam, 0x02, 0x00);
err += sn9c102_i2c_write(cam, 0x28, 0x00);
return err;
}
static int hv7131d_get_ctrl(struct sn9c102_device* cam,
struct v4l2_control* ctrl)
{
switch (ctrl->id) {
case V4L2_CID_EXPOSURE:
{
int r1 = sn9c102_i2c_read(cam, 0x26),
r2 = sn9c102_i2c_read(cam, 0x27);
if (r1 < 0 || r2 < 0)
return -EIO;
ctrl->value = (r1 << 8) | (r2 & 0xff);
}
return 0;
case V4L2_CID_RED_BALANCE:
if ((ctrl->value = sn9c102_i2c_read(cam, 0x31)) < 0)
return -EIO;
ctrl->value = 0x3f - (ctrl->value & 0x3f);
return 0;
case V4L2_CID_BLUE_BALANCE:
if ((ctrl->value = sn9c102_i2c_read(cam, 0x33)) < 0)
return -EIO;
ctrl->value = 0x3f - (ctrl->value & 0x3f);
return 0;
case SN9C102_V4L2_CID_GREEN_BALANCE:
if ((ctrl->value = sn9c102_i2c_read(cam, 0x32)) < 0)
return -EIO;
ctrl->value = 0x3f - (ctrl->value & 0x3f);
return 0;
case SN9C102_V4L2_CID_RESET_LEVEL:
if ((ctrl->value = sn9c102_i2c_read(cam, 0x30)) < 0)
return -EIO;
ctrl->value &= 0x3f;
return 0;
case SN9C102_V4L2_CID_PIXEL_BIAS_VOLTAGE:
if ((ctrl->value = sn9c102_i2c_read(cam, 0x34)) < 0)
return -EIO;
ctrl->value &= 0x07;
return 0;
default:
return -EINVAL;
}
}
static int hv7131d_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, 0x26, ctrl->value >> 8);
err += sn9c102_i2c_write(cam, 0x27, ctrl->value & 0xff);
break;
case V4L2_CID_RED_BALANCE:
err += sn9c102_i2c_write(cam, 0x31, 0x3f - ctrl->value);
break;
case V4L2_CID_BLUE_BALANCE:
err += sn9c102_i2c_write(cam, 0x33, 0x3f - ctrl->value);
break;
case SN9C102_V4L2_CID_GREEN_BALANCE:
err += sn9c102_i2c_write(cam, 0x32, 0x3f - ctrl->value);
break;
case SN9C102_V4L2_CID_RESET_LEVEL:
err += sn9c102_i2c_write(cam, 0x30, ctrl->value);
break;
case SN9C102_V4L2_CID_PIXEL_BIAS_VOLTAGE:
err += sn9c102_i2c_write(cam, 0x34, ctrl->value);
break;
default:
return -EINVAL;
}
return err ? -EIO : 0;
}
static int hv7131d_set_crop(struct sn9c102_device* cam,
const struct v4l2_rect* rect)
{
struct sn9c102_sensor* s = sn9c102_get_sensor(cam);
int err = 0;
u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 2,
v_start = (u8)(rect->top - s->cropcap.bounds.top) + 2;
err += sn9c102_write_reg(cam, h_start, 0x12);
err += sn9c102_write_reg(cam, v_start, 0x13);
return err;
}
static int hv7131d_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, 0x42, 0x19);
else
err += sn9c102_write_reg(cam, 0xf2, 0x19);
return err;
}
static const struct sn9c102_sensor hv7131d = {
.name = "HV7131D",
.maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
.supported_bridge = BRIDGE_SN9C101 | BRIDGE_SN9C102,
.sysfs_ops = SN9C102_I2C_READ | SN9C102_I2C_WRITE,
.frequency = SN9C102_I2C_100KHZ,
.interface = SN9C102_I2C_2WIRES,
.i2c_slave_id = 0x11,
.init = &hv7131d_init,
.qctrl = {
{
.id = V4L2_CID_EXPOSURE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "exposure",
.minimum = 0x0250,
.maximum = 0xffff,
.step = 0x0001,
.default_value = 0x0250,
.flags = 0,
},
{
.id = V4L2_CID_RED_BALANCE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "red balance",
.minimum = 0x00,
.maximum = 0x3f,
.step = 0x01,
.default_value = 0x00,
.flags = 0,
},
{
.id = V4L2_CID_BLUE_BALANCE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "blue balance",
.minimum = 0x00,
.maximum = 0x3f,
.step = 0x01,
.default_value = 0x20,
.flags = 0,
},
{
.id = SN9C102_V4L2_CID_GREEN_BALANCE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "green balance",
.minimum = 0x00,
.maximum = 0x3f,
.step = 0x01,
.default_value = 0x1e,
.flags = 0,
},
{
.id = SN9C102_V4L2_CID_RESET_LEVEL,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "reset level",
.minimum = 0x19,
.maximum = 0x3f,
.step = 0x01,
.default_value = 0x30,
.flags = 0,
},
{
.id = SN9C102_V4L2_CID_PIXEL_BIAS_VOLTAGE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "pixel bias voltage",
.minimum = 0x00,
.maximum = 0x07,
.step = 0x01,
.default_value = 0x02,
.flags = 0,
},
},
.get_ctrl = &hv7131d_get_ctrl,
.set_ctrl = &hv7131d_set_ctrl,
.cropcap = {
.bounds = {
.left = 0,
.top = 0,
.width = 640,
.height = 480,
},
.defrect = {
.left = 0,
.top = 0,
.width = 640,
.height = 480,
},
},
.set_crop = &hv7131d_set_crop,
.pix_format = {
.width = 640,
.height = 480,
.pixelformat = V4L2_PIX_FMT_SBGGR8,
.priv = 8,
},
.set_pix_format = &hv7131d_set_pix_format
};
int sn9c102_probe_hv7131d(struct sn9c102_device* cam)
{
int r0 = 0, r1 = 0, err;
err = sn9c102_write_const_regs(cam, {0x01, 0x01}, {0x00, 0x01},
{0x28, 0x17});
r0 = sn9c102_i2c_try_read(cam, &hv7131d, 0x00);
r1 = sn9c102_i2c_try_read(cam, &hv7131d, 0x01);
if (err || r0 < 0 || r1 < 0)
return -EIO;
if ((r0 != 0x00 && r0 != 0x01) || r1 != 0x04)
return -ENODEV;
sn9c102_attach_sensor(cam, &hv7131d);
return 0;
}
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