drivers/usb/media/sn9c102_pas106b.c - arm/linux-arm64-legacy - Git at Google

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