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//lib/modules/2.6.32-754.el6.x86_64/source/include/media/si4713.h

/*
 * include/media/si4713.h
 *
 * Board related data definitions for Si4713 i2c device driver.
 *
 * Copyright (c) 2009 Nokia Corporation
 * Contact: Eduardo Valentin <eduardo.valentin@nokia.com>
 *
 * This file is licensed under the terms of the GNU General Public License
 * version 2. This program is licensed "as is" without any warranty of any
 * kind, whether express or implied.
 *
 */

#ifndef SI4713_H
#define SI4713_H

/* The SI4713 I2C sensor chip has a fixed slave address of 0xc6 or 0x22. */
#define SI4713_I2C_ADDR_BUSEN_HIGH	0x63
#define SI4713_I2C_ADDR_BUSEN_LOW	0x11

/*
 * Platform dependent definition
 */
struct si4713_platform_data {
	int gpio_reset; /* < 0 if not used */
};

/*
 * Structure to query for Received Noise Level (RNL).
 */
struct si4713_rnl {
	__u32 index;		/* modulator index */
	__u32 frequency;	/* frequency to peform rnl measurement */
	__s32 rnl;		/* result of measurement in dBuV */
	__u32 reserved[4];	/* drivers and apps must init this to 0 */
};

/*
 * This is the ioctl number to query for rnl. Users must pass a
 * struct si4713_rnl pointer specifying desired frequency in 'frequency' field
 * following driver capabilities (i.e V4L2_TUNER_CAP_LOW).
 * Driver must return measured value in the same struture, filling 'rnl' field.
 */
#define SI4713_IOC_MEASURE_RNL	_IOWR('V', BASE_VIDIOC_PRIVATE + 0, \
						struct si4713_rnl)

#endif /* ifndef SI4713_H*/

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