/*************************************************************************** * 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; }