434 lines
12 KiB
C
434 lines
12 KiB
C
/***************************************************************************
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* Plug-in for OV7630 image sensor connected to the SN9C1xx PC Camera *
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* Controllers *
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* *
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* Copyright (C) 2006-2007 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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static int ov7630_init(struct sn9c102_device* cam)
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{
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int err = 0;
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switch (sn9c102_get_bridge(cam)) {
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case BRIDGE_SN9C101:
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case BRIDGE_SN9C102:
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err = sn9c102_write_const_regs(cam, {0x00, 0x14}, {0x60, 0x17},
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{0x0f, 0x18}, {0x50, 0x19});
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err += sn9c102_i2c_write(cam, 0x12, 0x8d);
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err += sn9c102_i2c_write(cam, 0x12, 0x0d);
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err += sn9c102_i2c_write(cam, 0x11, 0x00);
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err += sn9c102_i2c_write(cam, 0x15, 0x35);
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err += sn9c102_i2c_write(cam, 0x16, 0x03);
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err += sn9c102_i2c_write(cam, 0x17, 0x1c);
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err += sn9c102_i2c_write(cam, 0x18, 0xbd);
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err += sn9c102_i2c_write(cam, 0x19, 0x06);
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err += sn9c102_i2c_write(cam, 0x1a, 0xf6);
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err += sn9c102_i2c_write(cam, 0x1b, 0x04);
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err += sn9c102_i2c_write(cam, 0x20, 0x44);
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err += sn9c102_i2c_write(cam, 0x23, 0xee);
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err += sn9c102_i2c_write(cam, 0x26, 0xa0);
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err += sn9c102_i2c_write(cam, 0x27, 0x9a);
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err += sn9c102_i2c_write(cam, 0x28, 0x20);
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err += sn9c102_i2c_write(cam, 0x29, 0x30);
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err += sn9c102_i2c_write(cam, 0x2f, 0x3d);
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err += sn9c102_i2c_write(cam, 0x30, 0x24);
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err += sn9c102_i2c_write(cam, 0x32, 0x86);
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err += sn9c102_i2c_write(cam, 0x60, 0xa9);
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err += sn9c102_i2c_write(cam, 0x61, 0x42);
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err += sn9c102_i2c_write(cam, 0x65, 0x00);
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err += sn9c102_i2c_write(cam, 0x69, 0x38);
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err += sn9c102_i2c_write(cam, 0x6f, 0x88);
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err += sn9c102_i2c_write(cam, 0x70, 0x0b);
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err += sn9c102_i2c_write(cam, 0x71, 0x00);
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err += sn9c102_i2c_write(cam, 0x74, 0x21);
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err += sn9c102_i2c_write(cam, 0x7d, 0xf7);
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break;
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case BRIDGE_SN9C103:
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err = sn9c102_write_const_regs(cam, {0x00, 0x02}, {0x00, 0x03},
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{0x1a, 0x04}, {0x20, 0x05},
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{0x20, 0x06}, {0x20, 0x07},
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{0x03, 0x10}, {0x0a, 0x14},
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{0x60, 0x17}, {0x0f, 0x18},
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{0x50, 0x19}, {0x1d, 0x1a},
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{0x10, 0x1b}, {0x02, 0x1c},
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{0x03, 0x1d}, {0x0f, 0x1e},
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{0x0c, 0x1f}, {0x00, 0x20},
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{0x10, 0x21}, {0x20, 0x22},
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{0x30, 0x23}, {0x40, 0x24},
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{0x50, 0x25}, {0x60, 0x26},
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{0x70, 0x27}, {0x80, 0x28},
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{0x90, 0x29}, {0xa0, 0x2a},
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{0xb0, 0x2b}, {0xc0, 0x2c},
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{0xd0, 0x2d}, {0xe0, 0x2e},
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{0xf0, 0x2f}, {0xff, 0x30});
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err += sn9c102_i2c_write(cam, 0x12, 0x8d);
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err += sn9c102_i2c_write(cam, 0x12, 0x0d);
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err += sn9c102_i2c_write(cam, 0x15, 0x34);
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err += sn9c102_i2c_write(cam, 0x11, 0x01);
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err += sn9c102_i2c_write(cam, 0x1b, 0x04);
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err += sn9c102_i2c_write(cam, 0x20, 0x44);
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err += sn9c102_i2c_write(cam, 0x23, 0xee);
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err += sn9c102_i2c_write(cam, 0x26, 0xa0);
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err += sn9c102_i2c_write(cam, 0x27, 0x9a);
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err += sn9c102_i2c_write(cam, 0x28, 0x20);
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err += sn9c102_i2c_write(cam, 0x29, 0x30);
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err += sn9c102_i2c_write(cam, 0x2f, 0x3d);
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err += sn9c102_i2c_write(cam, 0x30, 0x24);
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err += sn9c102_i2c_write(cam, 0x32, 0x86);
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err += sn9c102_i2c_write(cam, 0x60, 0xa9);
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err += sn9c102_i2c_write(cam, 0x61, 0x42);
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err += sn9c102_i2c_write(cam, 0x65, 0x00);
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err += sn9c102_i2c_write(cam, 0x69, 0x38);
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err += sn9c102_i2c_write(cam, 0x6f, 0x88);
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err += sn9c102_i2c_write(cam, 0x70, 0x0b);
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err += sn9c102_i2c_write(cam, 0x71, 0x00);
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err += sn9c102_i2c_write(cam, 0x74, 0x21);
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err += sn9c102_i2c_write(cam, 0x7d, 0xf7);
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break;
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default:
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break;
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}
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return err;
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}
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static int ov7630_get_ctrl(struct sn9c102_device* cam,
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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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if ((ctrl->value = sn9c102_i2c_read(cam, 0x10)) < 0)
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return -EIO;
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break;
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case V4L2_CID_RED_BALANCE:
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ctrl->value = sn9c102_pread_reg(cam, 0x07);
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break;
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case V4L2_CID_BLUE_BALANCE:
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ctrl->value = sn9c102_pread_reg(cam, 0x06);
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break;
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case SN9C102_V4L2_CID_GREEN_BALANCE:
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ctrl->value = sn9c102_pread_reg(cam, 0x05);
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break;
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case V4L2_CID_GAIN:
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if ((ctrl->value = sn9c102_i2c_read(cam, 0x00)) < 0)
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return -EIO;
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ctrl->value &= 0x3f;
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break;
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case V4L2_CID_DO_WHITE_BALANCE:
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if ((ctrl->value = sn9c102_i2c_read(cam, 0x0c)) < 0)
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return -EIO;
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ctrl->value &= 0x3f;
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break;
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case V4L2_CID_WHITENESS:
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if ((ctrl->value = sn9c102_i2c_read(cam, 0x0d)) < 0)
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return -EIO;
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ctrl->value &= 0x3f;
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break;
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case V4L2_CID_AUTOGAIN:
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if ((ctrl->value = sn9c102_i2c_read(cam, 0x13)) < 0)
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return -EIO;
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ctrl->value &= 0x01;
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break;
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case V4L2_CID_VFLIP:
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if ((ctrl->value = sn9c102_i2c_read(cam, 0x75)) < 0)
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return -EIO;
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ctrl->value = (ctrl->value & 0x80) ? 1 : 0;
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break;
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case SN9C102_V4L2_CID_GAMMA:
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if ((ctrl->value = sn9c102_i2c_read(cam, 0x14)) < 0)
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return -EIO;
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ctrl->value = (ctrl->value & 0x02) ? 1 : 0;
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break;
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case SN9C102_V4L2_CID_BAND_FILTER:
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if ((ctrl->value = sn9c102_i2c_read(cam, 0x2d)) < 0)
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return -EIO;
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ctrl->value = (ctrl->value & 0x02) ? 1 : 0;
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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 ov7630_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, 0x10, ctrl->value);
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break;
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case V4L2_CID_RED_BALANCE:
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err += sn9c102_write_reg(cam, ctrl->value, 0x07);
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break;
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case V4L2_CID_BLUE_BALANCE:
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err += sn9c102_write_reg(cam, ctrl->value, 0x06);
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break;
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case SN9C102_V4L2_CID_GREEN_BALANCE:
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err += sn9c102_write_reg(cam, ctrl->value, 0x05);
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break;
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case V4L2_CID_GAIN:
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err += sn9c102_i2c_write(cam, 0x00, ctrl->value);
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break;
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case V4L2_CID_DO_WHITE_BALANCE:
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err += sn9c102_i2c_write(cam, 0x0c, ctrl->value);
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break;
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case V4L2_CID_WHITENESS:
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err += sn9c102_i2c_write(cam, 0x0d, ctrl->value);
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break;
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case V4L2_CID_AUTOGAIN:
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err += sn9c102_i2c_write(cam, 0x13, ctrl->value |
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(ctrl->value << 1));
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break;
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case V4L2_CID_VFLIP:
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err += sn9c102_i2c_write(cam, 0x75, 0x0e | (ctrl->value << 7));
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break;
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case SN9C102_V4L2_CID_GAMMA:
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err += sn9c102_i2c_write(cam, 0x14, ctrl->value << 2);
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break;
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case SN9C102_V4L2_CID_BAND_FILTER:
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err += sn9c102_i2c_write(cam, 0x2d, ctrl->value << 2);
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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 ov7630_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) + 1,
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v_start = (u8)(rect->top - s->cropcap.bounds.top) + 1;
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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 ov7630_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, 0x20, 0x19);
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else
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err += sn9c102_write_reg(cam, 0x50, 0x19);
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return err;
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}
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static const struct sn9c102_sensor ov7630 = {
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.name = "OV7630",
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.maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
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.supported_bridge = BRIDGE_SN9C101 | BRIDGE_SN9C102 | BRIDGE_SN9C103,
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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 = 0x21,
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.init = &ov7630_init,
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.qctrl = {
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{
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.id = V4L2_CID_GAIN,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "global gain",
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.minimum = 0x00,
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.maximum = 0x3f,
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.step = 0x01,
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.default_value = 0x14,
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.flags = 0,
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},
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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 = 0x00,
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.maximum = 0xff,
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.step = 0x01,
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.default_value = 0x60,
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.flags = 0,
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},
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{
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.id = V4L2_CID_WHITENESS,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "white balance background: red",
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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 = V4L2_CID_DO_WHITE_BALANCE,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "white balance background: blue",
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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 = 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 = 0x7f,
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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 = 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 = 0x7f,
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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 = V4L2_CID_AUTOGAIN,
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.type = V4L2_CTRL_TYPE_BOOLEAN,
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.name = "auto adjust",
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.minimum = 0x00,
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.maximum = 0x01,
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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_VFLIP,
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.type = V4L2_CTRL_TYPE_BOOLEAN,
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.name = "vertical flip",
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.minimum = 0x00,
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.maximum = 0x01,
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.step = 0x01,
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.default_value = 0x01,
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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 = 0x7f,
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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_BAND_FILTER,
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.type = V4L2_CTRL_TYPE_BOOLEAN,
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.name = "band filter",
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.minimum = 0x00,
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.maximum = 0x01,
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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 = SN9C102_V4L2_CID_GAMMA,
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.type = V4L2_CTRL_TYPE_BOOLEAN,
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.name = "rgb gamma",
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.minimum = 0x00,
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.maximum = 0x01,
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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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.get_ctrl = &ov7630_get_ctrl,
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.set_ctrl = &ov7630_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 = &ov7630_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_SN9C10X,
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.priv = 8,
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},
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.set_pix_format = &ov7630_set_pix_format
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};
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int sn9c102_probe_ov7630(struct sn9c102_device* cam)
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{
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int pid, ver, err = 0;
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switch (sn9c102_get_bridge(cam)) {
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case BRIDGE_SN9C101:
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case BRIDGE_SN9C102:
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err = sn9c102_write_const_regs(cam, {0x01, 0x01}, {0x00, 0x01},
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{0x28, 0x17});
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break;
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case BRIDGE_SN9C103: /* do _not_ change anything! */
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err = sn9c102_write_const_regs(cam, {0x09, 0x01}, {0x42, 0x01},
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{0x28, 0x17}, {0x44, 0x02});
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pid = sn9c102_i2c_try_read(cam, &ov7630, 0x0a);
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if (err || pid < 0) /* try a different initialization */
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err += sn9c102_write_const_regs(cam, {0x01, 0x01},
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{0x00, 0x01});
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break;
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default:
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break;
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}
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pid = sn9c102_i2c_try_read(cam, &ov7630, 0x0a);
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ver = sn9c102_i2c_try_read(cam, &ov7630, 0x0b);
|
|
if (err || pid < 0 || ver < 0)
|
|
return -EIO;
|
|
if (pid != 0x76 || ver != 0x31)
|
|
return -ENODEV;
|
|
sn9c102_attach_sensor(cam, &ov7630);
|
|
|
|
return 0;
|
|
}
|