drivers/usb/media/sn9c102_hv7131d.c - third_party/linux - Git at Google

 /***************************************************************************
  * Plug-in for HV7131D image sensor connected to the SN9C10x PC Camera     *
  * Controllers                                                             *
  *                                                                         *
  * Copyright (C) 2004-2006 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"


 static struct sn9c102_sensor hv7131d;


 static int hv7131d_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, 0x60, 0x17);
 	err += sn9c102_write_reg(cam, 0x0e, 0x18);
 	err += sn9c102_write_reg(cam, 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 = &hv7131d;
 	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 struct sn9c102_sensor hv7131d = {
 	.name = "HV7131D",
 	.maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
 	.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 = 0;

 	err += sn9c102_write_reg(cam, 0x01, 0x01);
 	err += sn9c102_write_reg(cam, 0x00, 0x01);
 	err += sn9c102_write_reg(cam, 0x28, 0x17);
 	if (err)
 		return -EIO;

 	r0 = sn9c102_i2c_try_read(cam, &hv7131d, 0x00);
 	r1 = sn9c102_i2c_try_read(cam, &hv7131d, 0x01);
 	if (r0 < 0 || r1 < 0)
 		return -EIO;

 	if (r0 != 0x00 && r1 != 0x04)
 		return -ENODEV;

 	sn9c102_attach_sensor(cam, &hv7131d);

 	return 0;
 }
	/***************************************************************************
	* Plug-in for HV7131D image sensor connected to the SN9C10x PC Camera *
	* Controllers *
	* *
	* Copyright (C) 2004-2006 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"


	static struct sn9c102_sensor hv7131d;


	static int hv7131d_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, 0x60, 0x17);
	err += sn9c102_write_reg(cam, 0x0e, 0x18);
	err += sn9c102_write_reg(cam, 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 = &hv7131d;
	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 struct sn9c102_sensor hv7131d = {
	.name = "HV7131D",
	.maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
	.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 = 0;

	err += sn9c102_write_reg(cam, 0x01, 0x01);
	err += sn9c102_write_reg(cam, 0x00, 0x01);
	err += sn9c102_write_reg(cam, 0x28, 0x17);
	if (err)
	return -EIO;

	r0 = sn9c102_i2c_try_read(cam, &hv7131d, 0x00);
	r1 = sn9c102_i2c_try_read(cam, &hv7131d, 0x01);
	if (r0 < 0 \|\| r1 < 0)
	return -EIO;

	if (r0 != 0x00 && r1 != 0x04)
	return -ENODEV;

	sn9c102_attach_sensor(cam, &hv7131d);

	return 0;
	}