265 lines
6.9 KiB
C
265 lines
6.9 KiB
C
/***************************************************************************
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* Plug-in for HV7131D image sensor connected to the SN9C1xx PC Camera *
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* Controllers *
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* *
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* Copyright (C) 2004-2007 by Luca Risolia <luca.risolia@studio.unibo.it> *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the Free Software *
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. *
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***************************************************************************/
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#include "sn9c102_sensor.h"
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#include "sn9c102_devtable.h"
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static int hv7131d_init(struct sn9c102_device* cam)
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{
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int err;
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err = sn9c102_write_const_regs(cam, {0x00, 0x10}, {0x00, 0x11},
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{0x00, 0x14}, {0x60, 0x17},
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{0x0e, 0x18}, {0xf2, 0x19});
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err += sn9c102_i2c_write(cam, 0x01, 0x04);
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err += sn9c102_i2c_write(cam, 0x02, 0x00);
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err += sn9c102_i2c_write(cam, 0x28, 0x00);
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return err;
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}
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static int hv7131d_get_ctrl(struct sn9c102_device* cam,
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struct v4l2_control* ctrl)
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{
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switch (ctrl->id) {
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case V4L2_CID_EXPOSURE:
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{
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int r1 = sn9c102_i2c_read(cam, 0x26),
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r2 = sn9c102_i2c_read(cam, 0x27);
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if (r1 < 0 || r2 < 0)
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return -EIO;
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ctrl->value = (r1 << 8) | (r2 & 0xff);
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}
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return 0;
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case V4L2_CID_RED_BALANCE:
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if ((ctrl->value = sn9c102_i2c_read(cam, 0x31)) < 0)
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return -EIO;
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ctrl->value = 0x3f - (ctrl->value & 0x3f);
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return 0;
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case V4L2_CID_BLUE_BALANCE:
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if ((ctrl->value = sn9c102_i2c_read(cam, 0x33)) < 0)
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return -EIO;
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ctrl->value = 0x3f - (ctrl->value & 0x3f);
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return 0;
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case SN9C102_V4L2_CID_GREEN_BALANCE:
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if ((ctrl->value = sn9c102_i2c_read(cam, 0x32)) < 0)
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return -EIO;
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ctrl->value = 0x3f - (ctrl->value & 0x3f);
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return 0;
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case SN9C102_V4L2_CID_RESET_LEVEL:
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if ((ctrl->value = sn9c102_i2c_read(cam, 0x30)) < 0)
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return -EIO;
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ctrl->value &= 0x3f;
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return 0;
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case SN9C102_V4L2_CID_PIXEL_BIAS_VOLTAGE:
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if ((ctrl->value = sn9c102_i2c_read(cam, 0x34)) < 0)
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return -EIO;
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ctrl->value &= 0x07;
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return 0;
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default:
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return -EINVAL;
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}
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}
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static int hv7131d_set_ctrl(struct sn9c102_device* cam,
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const struct v4l2_control* ctrl)
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{
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int err = 0;
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switch (ctrl->id) {
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case V4L2_CID_EXPOSURE:
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err += sn9c102_i2c_write(cam, 0x26, ctrl->value >> 8);
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err += sn9c102_i2c_write(cam, 0x27, ctrl->value & 0xff);
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break;
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case V4L2_CID_RED_BALANCE:
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err += sn9c102_i2c_write(cam, 0x31, 0x3f - ctrl->value);
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break;
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case V4L2_CID_BLUE_BALANCE:
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err += sn9c102_i2c_write(cam, 0x33, 0x3f - ctrl->value);
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break;
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case SN9C102_V4L2_CID_GREEN_BALANCE:
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err += sn9c102_i2c_write(cam, 0x32, 0x3f - ctrl->value);
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break;
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case SN9C102_V4L2_CID_RESET_LEVEL:
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err += sn9c102_i2c_write(cam, 0x30, ctrl->value);
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break;
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case SN9C102_V4L2_CID_PIXEL_BIAS_VOLTAGE:
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err += sn9c102_i2c_write(cam, 0x34, ctrl->value);
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break;
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default:
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return -EINVAL;
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}
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return err ? -EIO : 0;
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}
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static int hv7131d_set_crop(struct sn9c102_device* cam,
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const struct v4l2_rect* rect)
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{
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struct sn9c102_sensor* s = sn9c102_get_sensor(cam);
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int err = 0;
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u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 2,
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v_start = (u8)(rect->top - s->cropcap.bounds.top) + 2;
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err += sn9c102_write_reg(cam, h_start, 0x12);
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err += sn9c102_write_reg(cam, v_start, 0x13);
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return err;
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}
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static int hv7131d_set_pix_format(struct sn9c102_device* cam,
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const struct v4l2_pix_format* pix)
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{
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int err = 0;
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if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X)
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err += sn9c102_write_reg(cam, 0x42, 0x19);
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else
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err += sn9c102_write_reg(cam, 0xf2, 0x19);
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return err;
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}
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static const struct sn9c102_sensor hv7131d = {
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.name = "HV7131D",
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.maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
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.supported_bridge = BRIDGE_SN9C101 | BRIDGE_SN9C102,
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.sysfs_ops = SN9C102_I2C_READ | SN9C102_I2C_WRITE,
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.frequency = SN9C102_I2C_100KHZ,
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.interface = SN9C102_I2C_2WIRES,
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.i2c_slave_id = 0x11,
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.init = &hv7131d_init,
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.qctrl = {
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{
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.id = V4L2_CID_EXPOSURE,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "exposure",
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.minimum = 0x0250,
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.maximum = 0xffff,
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.step = 0x0001,
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.default_value = 0x0250,
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.flags = 0,
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},
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{
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.id = V4L2_CID_RED_BALANCE,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "red balance",
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.minimum = 0x00,
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.maximum = 0x3f,
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.step = 0x01,
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.default_value = 0x00,
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.flags = 0,
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},
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{
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.id = V4L2_CID_BLUE_BALANCE,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "blue balance",
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.minimum = 0x00,
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.maximum = 0x3f,
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.step = 0x01,
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.default_value = 0x20,
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.flags = 0,
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},
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{
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.id = SN9C102_V4L2_CID_GREEN_BALANCE,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "green balance",
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.minimum = 0x00,
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.maximum = 0x3f,
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.step = 0x01,
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.default_value = 0x1e,
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.flags = 0,
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},
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{
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.id = SN9C102_V4L2_CID_RESET_LEVEL,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "reset level",
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.minimum = 0x19,
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.maximum = 0x3f,
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.step = 0x01,
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.default_value = 0x30,
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.flags = 0,
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},
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{
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.id = SN9C102_V4L2_CID_PIXEL_BIAS_VOLTAGE,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "pixel bias voltage",
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.minimum = 0x00,
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.maximum = 0x07,
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.step = 0x01,
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.default_value = 0x02,
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.flags = 0,
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},
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},
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.get_ctrl = &hv7131d_get_ctrl,
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.set_ctrl = &hv7131d_set_ctrl,
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.cropcap = {
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.bounds = {
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.left = 0,
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.top = 0,
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.width = 640,
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.height = 480,
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},
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.defrect = {
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.left = 0,
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.top = 0,
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.width = 640,
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.height = 480,
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},
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},
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.set_crop = &hv7131d_set_crop,
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.pix_format = {
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.width = 640,
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.height = 480,
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.pixelformat = V4L2_PIX_FMT_SBGGR8,
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.priv = 8,
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},
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.set_pix_format = &hv7131d_set_pix_format
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};
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int sn9c102_probe_hv7131d(struct sn9c102_device* cam)
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{
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int r0 = 0, r1 = 0, err;
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err = sn9c102_write_const_regs(cam, {0x01, 0x01}, {0x00, 0x01},
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{0x28, 0x17});
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r0 = sn9c102_i2c_try_read(cam, &hv7131d, 0x00);
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r1 = sn9c102_i2c_try_read(cam, &hv7131d, 0x01);
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if (err || r0 < 0 || r1 < 0)
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return -EIO;
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if (r0 != 0x00 || r1 != 0x04)
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return -ENODEV;
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sn9c102_attach_sensor(cam, &hv7131d);
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return 0;
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}
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