51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
/*
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* include/media/si4713.h
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*
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* Board related data definitions for Si4713 i2c device driver.
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*
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* Copyright (c) 2009 Nokia Corporation
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* Contact: Eduardo Valentin <eduardo.valentin@nokia.com>
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*
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* This file is licensed under the terms of the GNU General Public License
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* version 2. This program is licensed "as is" without any warranty of any
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* kind, whether express or implied.
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*
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*/
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#ifndef SI4713_H
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#define SI4713_H
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/* The SI4713 I2C sensor chip has a fixed slave address of 0xc6 or 0x22. */
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#define SI4713_I2C_ADDR_BUSEN_HIGH 0x63
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#define SI4713_I2C_ADDR_BUSEN_LOW 0x11
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/*
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* Platform dependent definition
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*/
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struct si4713_platform_data {
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const char * const *supply_names;
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unsigned supplies;
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int gpio_reset; /* < 0 if not used */
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};
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/*
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* Structure to query for Received Noise Level (RNL).
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*/
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struct si4713_rnl {
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__u32 index; /* modulator index */
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__u32 frequency; /* frequency to peform rnl measurement */
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__s32 rnl; /* result of measurement in dBuV */
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__u32 reserved[4]; /* drivers and apps must init this to 0 */
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};
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/*
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* This is the ioctl number to query for rnl. Users must pass a
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* struct si4713_rnl pointer specifying desired frequency in 'frequency' field
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* following driver capabilities (i.e V4L2_TUNER_CAP_LOW).
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* Driver must return measured value in the same struture, filling 'rnl' field.
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*/
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#define SI4713_IOC_MEASURE_RNL _IOWR('V', BASE_VIDIOC_PRIVATE + 0, \
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struct si4713_rnl)
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#endif /* ifndef SI4713_H*/
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