drivers/media/video/sn9c102/sn9c102_pas202bcb.c - maze/linux - Git at Google

 /***************************************************************************
  * Plug-in for PAS202BCB image sensor connected to the SN9C1xx PC Camera   *
  * Controllers                                                             *
  *                                                                         *
  * Copyright (C) 2004 by Carlos Eduardo Medaglia Dyonisio                  *
  *                       <medaglia@undl.org.br>                            *
  *                       http://cadu.homelinux.com:8080/                   *
  *                                                                         *
  * Support for SN9C103, DAC Magnitude, exposure and green gain controls    *
  * added 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 pas202bcb;


 static int pas202bcb_init(struct sn9c102_device* cam)
 {
 	int err = 0;

 	switch (sn9c102_get_bridge(cam)) {
 	case BRIDGE_SN9C101:
 	case BRIDGE_SN9C102:
 	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, 0x30, 0x19);
 	err += sn9c102_write_reg(cam, 0x09, 0x18);
 		break;
 	case BRIDGE_SN9C103:
 		err += sn9c102_write_reg(cam, 0x00, 0x02);
 		err += sn9c102_write_reg(cam, 0x00, 0x03);
 		err += sn9c102_write_reg(cam, 0x1a, 0x04);
 		err += sn9c102_write_reg(cam, 0x20, 0x05);
 		err += sn9c102_write_reg(cam, 0x20, 0x06);
 		err += sn9c102_write_reg(cam, 0x20, 0x07);
 		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, 0x30, 0x19);
 		err += sn9c102_write_reg(cam, 0x09, 0x18);
 		err += sn9c102_write_reg(cam, 0x02, 0x1c);
 		err += sn9c102_write_reg(cam, 0x03, 0x1d);
 		err += sn9c102_write_reg(cam, 0x0f, 0x1e);
 		err += sn9c102_write_reg(cam, 0x0c, 0x1f);
 		err += sn9c102_write_reg(cam, 0x00, 0x20);
 		err += sn9c102_write_reg(cam, 0x10, 0x21);
 		err += sn9c102_write_reg(cam, 0x20, 0x22);
 		err += sn9c102_write_reg(cam, 0x30, 0x23);
 		err += sn9c102_write_reg(cam, 0x40, 0x24);
 		err += sn9c102_write_reg(cam, 0x50, 0x25);
 		err += sn9c102_write_reg(cam, 0x60, 0x26);
 		err += sn9c102_write_reg(cam, 0x70, 0x27);
 		err += sn9c102_write_reg(cam, 0x80, 0x28);
 		err += sn9c102_write_reg(cam, 0x90, 0x29);
 		err += sn9c102_write_reg(cam, 0xa0, 0x2a);
 		err += sn9c102_write_reg(cam, 0xb0, 0x2b);
 		err += sn9c102_write_reg(cam, 0xc0, 0x2c);
 		err += sn9c102_write_reg(cam, 0xd0, 0x2d);
 		err += sn9c102_write_reg(cam, 0xe0, 0x2e);
 		err += sn9c102_write_reg(cam, 0xf0, 0x2f);
 		err += sn9c102_write_reg(cam, 0xff, 0x30);
 		break;
 	default:
 		break;
 	}

 	err += sn9c102_i2c_write(cam, 0x02, 0x14);
 	err += sn9c102_i2c_write(cam, 0x03, 0x40);
 	err += sn9c102_i2c_write(cam, 0x0d, 0x2c);
 	err += sn9c102_i2c_write(cam, 0x0e, 0x01);
 	err += sn9c102_i2c_write(cam, 0x0f, 0xa9);
 	err += sn9c102_i2c_write(cam, 0x10, 0x08);
 	err += sn9c102_i2c_write(cam, 0x13, 0x63);
 	err += sn9c102_i2c_write(cam, 0x15, 0x70);
 	err += sn9c102_i2c_write(cam, 0x11, 0x01);

 	msleep(400);

 	return err;
 }


 static int pas202bcb_get_ctrl(struct sn9c102_device* cam,
 			      struct v4l2_control* ctrl)
 {
 	switch (ctrl->id) {
 	case V4L2_CID_EXPOSURE:
 		{
 			int r1 = sn9c102_i2c_read(cam, 0x04),
 			    r2 = sn9c102_i2c_read(cam, 0x05);
 			if (r1 < 0 || r2 < 0)
 				return -EIO;
 			ctrl->value = (r1 << 6) | (r2 & 0x3f);
 		}
 		return 0;
 	case V4L2_CID_RED_BALANCE:
 		if ((ctrl->value = sn9c102_i2c_read(cam, 0x09)) < 0)
 			return -EIO;
 		ctrl->value &= 0x0f;
 		return 0;
 	case V4L2_CID_BLUE_BALANCE:
 		if ((ctrl->value = sn9c102_i2c_read(cam, 0x07)) < 0)
 			return -EIO;
 		ctrl->value &= 0x0f;
 		return 0;
 	case V4L2_CID_GAIN:
 		if ((ctrl->value = sn9c102_i2c_read(cam, 0x10)) < 0)
 			return -EIO;
 		ctrl->value &= 0x1f;
 		return 0;
 	case SN9C102_V4L2_CID_GREEN_BALANCE:
 		if ((ctrl->value = sn9c102_i2c_read(cam, 0x08)) < 0)
 			return -EIO;
 		ctrl->value &= 0x0f;
 		return 0;
 	case SN9C102_V4L2_CID_DAC_MAGNITUDE:
 		if ((ctrl->value = sn9c102_i2c_read(cam, 0x0c)) < 0)
 			return -EIO;
 		return 0;
 	default:
 		return -EINVAL;
 	}
 }


 static int pas202bcb_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, 0x28, 0x17);
 	else
 		err += sn9c102_write_reg(cam, 0x20, 0x17);

 	return err;
 }


 static int pas202bcb_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, 0x04, ctrl->value >> 6);
 		err += sn9c102_i2c_write(cam, 0x05, ctrl->value & 0x3f);
 		break;
 	case V4L2_CID_RED_BALANCE:
 		err += sn9c102_i2c_write(cam, 0x09, ctrl->value);
 		break;
 	case V4L2_CID_BLUE_BALANCE:
 		err += sn9c102_i2c_write(cam, 0x07, ctrl->value);
 		break;
 	case V4L2_CID_GAIN:
 		err += sn9c102_i2c_write(cam, 0x10, ctrl->value);
 		break;
 	case SN9C102_V4L2_CID_GREEN_BALANCE:
 		err += sn9c102_i2c_write(cam, 0x08, ctrl->value);
 		break;
 	case SN9C102_V4L2_CID_DAC_MAGNITUDE:
 		err += sn9c102_i2c_write(cam, 0x0c, ctrl->value);
 		break;
 	default:
 		return -EINVAL;
 	}
 	err += sn9c102_i2c_write(cam, 0x11, 0x01);

 	return err ? -EIO : 0;
 }


 static int pas202bcb_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 = 0,
 	   v_start = (u8)(rect->top - s->cropcap.bounds.top) + 3;

 	switch (sn9c102_get_bridge(cam)) {
 	case BRIDGE_SN9C101:
 	case BRIDGE_SN9C102:
 		h_start = (u8)(rect->left - s->cropcap.bounds.left) + 4;
 		break;
 	case BRIDGE_SN9C103:
 		h_start = (u8)(rect->left - s->cropcap.bounds.left) + 3;
 		break;
 	default:
 		break;
 	}

 	err += sn9c102_write_reg(cam, h_start, 0x12);
 	err += sn9c102_write_reg(cam, v_start, 0x13);

 	return err;
 }


 static struct sn9c102_sensor pas202bcb = {
 	.name = "PAS202BCB",
 	.maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
 	.supported_bridge = BRIDGE_SN9C101 | BRIDGE_SN9C102 | BRIDGE_SN9C103,
 	.sysfs_ops = SN9C102_I2C_READ | SN9C102_I2C_WRITE,
 	.frequency = SN9C102_I2C_400KHZ | SN9C102_I2C_100KHZ,
 	.interface = SN9C102_I2C_2WIRES,
 	.i2c_slave_id = 0x40,
 	.init = &pas202bcb_init,
 	.qctrl = {
 		{
 			.id = V4L2_CID_EXPOSURE,
 			.type = V4L2_CTRL_TYPE_INTEGER,
 			.name = "exposure",
 			.minimum = 0x01e5,
 			.maximum = 0x3fff,
 			.step = 0x0001,
 			.default_value = 0x01e5,
 			.flags = 0,
 		},
 		{
 			.id = V4L2_CID_GAIN,
 			.type = V4L2_CTRL_TYPE_INTEGER,
 			.name = "global gain",
 			.minimum = 0x00,
 			.maximum = 0x1f,
 			.step = 0x01,
 			.default_value = 0x0b,
 			.flags = 0,
 		},
 		{
 			.id = V4L2_CID_RED_BALANCE,
 			.type = V4L2_CTRL_TYPE_INTEGER,
 			.name = "red balance",
 			.minimum = 0x00,
 			.maximum = 0x0f,
 			.step = 0x01,
 			.default_value = 0x00,
 			.flags = 0,
 		},
 		{
 			.id = V4L2_CID_BLUE_BALANCE,
 			.type = V4L2_CTRL_TYPE_INTEGER,
 			.name = "blue balance",
 			.minimum = 0x00,
 			.maximum = 0x0f,
 			.step = 0x01,
 			.default_value = 0x05,
 			.flags = 0,
 		},
 		{
 			.id = SN9C102_V4L2_CID_GREEN_BALANCE,
 			.type = V4L2_CTRL_TYPE_INTEGER,
 			.name = "green balance",
 			.minimum = 0x00,
 			.maximum = 0x0f,
 			.step = 0x01,
 			.default_value = 0x00,
 			.flags = 0,
 		},
 		{
 			.id = SN9C102_V4L2_CID_DAC_MAGNITUDE,
 			.type = V4L2_CTRL_TYPE_INTEGER,
 			.name = "DAC magnitude",
 			.minimum = 0x00,
 			.maximum = 0xff,
 			.step = 0x01,
 			.default_value = 0x04,
 			.flags = 0,
 		},
 	},
 	.get_ctrl = &pas202bcb_get_ctrl,
 	.set_ctrl = &pas202bcb_set_ctrl,
 	.cropcap = {
 		.bounds = {
 			.left = 0,
 			.top = 0,
 			.width = 640,
 			.height = 480,
 		},
 		.defrect = {
 			.left = 0,
 			.top = 0,
 			.width = 640,
 			.height = 480,
 		},
 	},
 	.set_crop = &pas202bcb_set_crop,
 	.pix_format = {
 		.width = 640,
 		.height = 480,
 		.pixelformat = V4L2_PIX_FMT_SBGGR8,
 		.priv = 8,
 	},
 	.set_pix_format = &pas202bcb_set_pix_format
 };


 int sn9c102_probe_pas202bcb(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!
 	 */
 	switch (sn9c102_get_bridge(cam)) {
 	case BRIDGE_SN9C101:
 	case BRIDGE_SN9C102:
 		err += sn9c102_write_reg(cam, 0x01, 0x01); /* power down */
 		err += sn9c102_write_reg(cam, 0x40, 0x01); /* power on */
 		err += sn9c102_write_reg(cam, 0x28, 0x17); /* clock 24 MHz */
 		break;
 	case BRIDGE_SN9C103: /* do _not_ change anything! */
 		err += sn9c102_write_reg(cam, 0x09, 0x01);
 		err += sn9c102_write_reg(cam, 0x44, 0x01);
 		err += sn9c102_write_reg(cam, 0x44, 0x02);
 		err += sn9c102_write_reg(cam, 0x29, 0x17);
 		break;
 	default:
 		break;
 	}

 	r0 = sn9c102_i2c_try_read(cam, &pas202bcb, 0x00);
 	r1 = sn9c102_i2c_try_read(cam, &pas202bcb, 0x01);

 	if (err || r0 < 0 || r1 < 0)
 		return -EIO;

 	pid = (r0 << 4) | ((r1 & 0xf0) >> 4);
 	if (pid != 0x017)
 		return -ENODEV;

 	sn9c102_attach_sensor(cam, &pas202bcb);

 	return 0;
 }
	/***************************************************************************
	* Plug-in for PAS202BCB image sensor connected to the SN9C1xx PC Camera *
	* Controllers *
	* *
	* Copyright (C) 2004 by Carlos Eduardo Medaglia Dyonisio *
	* <medaglia@undl.org.br> *
	* http://cadu.homelinux.com:8080/ *
	* *
	* Support for SN9C103, DAC Magnitude, exposure and green gain controls *
	* added 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 pas202bcb;


	static int pas202bcb_init(struct sn9c102_device* cam)
	{
	int err = 0;

	switch (sn9c102_get_bridge(cam)) {
	case BRIDGE_SN9C101:
	case BRIDGE_SN9C102:
	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, 0x30, 0x19);
	err += sn9c102_write_reg(cam, 0x09, 0x18);
	break;
	case BRIDGE_SN9C103:
	err += sn9c102_write_reg(cam, 0x00, 0x02);
	err += sn9c102_write_reg(cam, 0x00, 0x03);
	err += sn9c102_write_reg(cam, 0x1a, 0x04);
	err += sn9c102_write_reg(cam, 0x20, 0x05);
	err += sn9c102_write_reg(cam, 0x20, 0x06);
	err += sn9c102_write_reg(cam, 0x20, 0x07);
	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, 0x30, 0x19);
	err += sn9c102_write_reg(cam, 0x09, 0x18);
	err += sn9c102_write_reg(cam, 0x02, 0x1c);
	err += sn9c102_write_reg(cam, 0x03, 0x1d);
	err += sn9c102_write_reg(cam, 0x0f, 0x1e);
	err += sn9c102_write_reg(cam, 0x0c, 0x1f);
	err += sn9c102_write_reg(cam, 0x00, 0x20);
	err += sn9c102_write_reg(cam, 0x10, 0x21);
	err += sn9c102_write_reg(cam, 0x20, 0x22);
	err += sn9c102_write_reg(cam, 0x30, 0x23);
	err += sn9c102_write_reg(cam, 0x40, 0x24);
	err += sn9c102_write_reg(cam, 0x50, 0x25);
	err += sn9c102_write_reg(cam, 0x60, 0x26);
	err += sn9c102_write_reg(cam, 0x70, 0x27);
	err += sn9c102_write_reg(cam, 0x80, 0x28);
	err += sn9c102_write_reg(cam, 0x90, 0x29);
	err += sn9c102_write_reg(cam, 0xa0, 0x2a);
	err += sn9c102_write_reg(cam, 0xb0, 0x2b);
	err += sn9c102_write_reg(cam, 0xc0, 0x2c);
	err += sn9c102_write_reg(cam, 0xd0, 0x2d);
	err += sn9c102_write_reg(cam, 0xe0, 0x2e);
	err += sn9c102_write_reg(cam, 0xf0, 0x2f);
	err += sn9c102_write_reg(cam, 0xff, 0x30);
	break;
	default:
	break;
	}

	err += sn9c102_i2c_write(cam, 0x02, 0x14);
	err += sn9c102_i2c_write(cam, 0x03, 0x40);
	err += sn9c102_i2c_write(cam, 0x0d, 0x2c);
	err += sn9c102_i2c_write(cam, 0x0e, 0x01);
	err += sn9c102_i2c_write(cam, 0x0f, 0xa9);
	err += sn9c102_i2c_write(cam, 0x10, 0x08);
	err += sn9c102_i2c_write(cam, 0x13, 0x63);
	err += sn9c102_i2c_write(cam, 0x15, 0x70);
	err += sn9c102_i2c_write(cam, 0x11, 0x01);

	msleep(400);

	return err;
	}


	static int pas202bcb_get_ctrl(struct sn9c102_device* cam,
	struct v4l2_control* ctrl)
	{
	switch (ctrl->id) {
	case V4L2_CID_EXPOSURE:
	{
	int r1 = sn9c102_i2c_read(cam, 0x04),
	r2 = sn9c102_i2c_read(cam, 0x05);
	if (r1 < 0 \|\| r2 < 0)
	return -EIO;
	ctrl->value = (r1 << 6) \| (r2 & 0x3f);
	}
	return 0;
	case V4L2_CID_RED_BALANCE:
	if ((ctrl->value = sn9c102_i2c_read(cam, 0x09)) < 0)
	return -EIO;
	ctrl->value &= 0x0f;
	return 0;
	case V4L2_CID_BLUE_BALANCE:
	if ((ctrl->value = sn9c102_i2c_read(cam, 0x07)) < 0)
	return -EIO;
	ctrl->value &= 0x0f;
	return 0;
	case V4L2_CID_GAIN:
	if ((ctrl->value = sn9c102_i2c_read(cam, 0x10)) < 0)
	return -EIO;
	ctrl->value &= 0x1f;
	return 0;
	case SN9C102_V4L2_CID_GREEN_BALANCE:
	if ((ctrl->value = sn9c102_i2c_read(cam, 0x08)) < 0)
	return -EIO;
	ctrl->value &= 0x0f;
	return 0;
	case SN9C102_V4L2_CID_DAC_MAGNITUDE:
	if ((ctrl->value = sn9c102_i2c_read(cam, 0x0c)) < 0)
	return -EIO;
	return 0;
	default:
	return -EINVAL;
	}
	}


	static int pas202bcb_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, 0x28, 0x17);
	else
	err += sn9c102_write_reg(cam, 0x20, 0x17);

	return err;
	}


	static int pas202bcb_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, 0x04, ctrl->value >> 6);
	err += sn9c102_i2c_write(cam, 0x05, ctrl->value & 0x3f);
	break;
	case V4L2_CID_RED_BALANCE:
	err += sn9c102_i2c_write(cam, 0x09, ctrl->value);
	break;
	case V4L2_CID_BLUE_BALANCE:
	err += sn9c102_i2c_write(cam, 0x07, ctrl->value);
	break;
	case V4L2_CID_GAIN:
	err += sn9c102_i2c_write(cam, 0x10, ctrl->value);
	break;
	case SN9C102_V4L2_CID_GREEN_BALANCE:
	err += sn9c102_i2c_write(cam, 0x08, ctrl->value);
	break;
	case SN9C102_V4L2_CID_DAC_MAGNITUDE:
	err += sn9c102_i2c_write(cam, 0x0c, ctrl->value);
	break;
	default:
	return -EINVAL;
	}
	err += sn9c102_i2c_write(cam, 0x11, 0x01);

	return err ? -EIO : 0;
	}


	static int pas202bcb_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 = 0,
	v_start = (u8)(rect->top - s->cropcap.bounds.top) + 3;

	switch (sn9c102_get_bridge(cam)) {
	case BRIDGE_SN9C101:
	case BRIDGE_SN9C102:
	h_start = (u8)(rect->left - s->cropcap.bounds.left) + 4;
	break;
	case BRIDGE_SN9C103:
	h_start = (u8)(rect->left - s->cropcap.bounds.left) + 3;
	break;
	default:
	break;
	}

	err += sn9c102_write_reg(cam, h_start, 0x12);
	err += sn9c102_write_reg(cam, v_start, 0x13);

	return err;
	}


	static struct sn9c102_sensor pas202bcb = {
	.name = "PAS202BCB",
	.maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
	.supported_bridge = BRIDGE_SN9C101 \| BRIDGE_SN9C102 \| BRIDGE_SN9C103,
	.sysfs_ops = SN9C102_I2C_READ \| SN9C102_I2C_WRITE,
	.frequency = SN9C102_I2C_400KHZ \| SN9C102_I2C_100KHZ,
	.interface = SN9C102_I2C_2WIRES,
	.i2c_slave_id = 0x40,
	.init = &pas202bcb_init,
	.qctrl = {
	{
	.id = V4L2_CID_EXPOSURE,
	.type = V4L2_CTRL_TYPE_INTEGER,
	.name = "exposure",
	.minimum = 0x01e5,
	.maximum = 0x3fff,
	.step = 0x0001,
	.default_value = 0x01e5,
	.flags = 0,
	},
	{
	.id = V4L2_CID_GAIN,
	.type = V4L2_CTRL_TYPE_INTEGER,
	.name = "global gain",
	.minimum = 0x00,
	.maximum = 0x1f,
	.step = 0x01,
	.default_value = 0x0b,
	.flags = 0,
	},
	{
	.id = V4L2_CID_RED_BALANCE,
	.type = V4L2_CTRL_TYPE_INTEGER,
	.name = "red balance",
	.minimum = 0x00,
	.maximum = 0x0f,
	.step = 0x01,
	.default_value = 0x00,
	.flags = 0,
	},
	{
	.id = V4L2_CID_BLUE_BALANCE,
	.type = V4L2_CTRL_TYPE_INTEGER,
	.name = "blue balance",
	.minimum = 0x00,
	.maximum = 0x0f,
	.step = 0x01,
	.default_value = 0x05,
	.flags = 0,
	},
	{
	.id = SN9C102_V4L2_CID_GREEN_BALANCE,
	.type = V4L2_CTRL_TYPE_INTEGER,
	.name = "green balance",
	.minimum = 0x00,
	.maximum = 0x0f,
	.step = 0x01,
	.default_value = 0x00,
	.flags = 0,
	},
	{
	.id = SN9C102_V4L2_CID_DAC_MAGNITUDE,
	.type = V4L2_CTRL_TYPE_INTEGER,
	.name = "DAC magnitude",
	.minimum = 0x00,
	.maximum = 0xff,
	.step = 0x01,
	.default_value = 0x04,
	.flags = 0,
	},
	},
	.get_ctrl = &pas202bcb_get_ctrl,
	.set_ctrl = &pas202bcb_set_ctrl,
	.cropcap = {
	.bounds = {
	.left = 0,
	.top = 0,
	.width = 640,
	.height = 480,
	},
	.defrect = {
	.left = 0,
	.top = 0,
	.width = 640,
	.height = 480,
	},
	},
	.set_crop = &pas202bcb_set_crop,
	.pix_format = {
	.width = 640,
	.height = 480,
	.pixelformat = V4L2_PIX_FMT_SBGGR8,
	.priv = 8,
	},
	.set_pix_format = &pas202bcb_set_pix_format
	};


	int sn9c102_probe_pas202bcb(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!
	*/
	switch (sn9c102_get_bridge(cam)) {
	case BRIDGE_SN9C101:
	case BRIDGE_SN9C102:
	err += sn9c102_write_reg(cam, 0x01, 0x01); /* power down */
	err += sn9c102_write_reg(cam, 0x40, 0x01); /* power on */
	err += sn9c102_write_reg(cam, 0x28, 0x17); /* clock 24 MHz */
	break;
	case BRIDGE_SN9C103: /* do _not_ change anything! */
	err += sn9c102_write_reg(cam, 0x09, 0x01);
	err += sn9c102_write_reg(cam, 0x44, 0x01);
	err += sn9c102_write_reg(cam, 0x44, 0x02);
	err += sn9c102_write_reg(cam, 0x29, 0x17);
	break;
	default:
	break;
	}

	r0 = sn9c102_i2c_try_read(cam, &pas202bcb, 0x00);
	r1 = sn9c102_i2c_try_read(cam, &pas202bcb, 0x01);

	if (err \|\| r0 < 0 \|\| r1 < 0)
	return -EIO;

	pid = (r0 << 4) \| ((r1 & 0xf0) >> 4);
	if (pid != 0x017)
	return -ENODEV;

	sn9c102_attach_sensor(cam, &pas202bcb);

	return 0;
	}