70 lines
1.5 KiB
C
70 lines
1.5 KiB
C
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/*
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* MS5611 pressure and temperature sensor driver
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*
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* Copyright (c) Tomasz Duszynski <tduszyns@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#ifndef _MS5611_H
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#define _MS5611_H
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#include <linux/device.h>
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#include <linux/iio/iio.h>
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#include <linux/mutex.h>
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struct regulator;
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#define MS5611_RESET 0x1e
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#define MS5611_READ_ADC 0x00
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#define MS5611_READ_PROM_WORD 0xA0
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#define MS5611_PROM_WORDS_NB 8
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enum {
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MS5611,
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MS5607,
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};
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struct ms5611_chip_info {
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u16 prom[MS5611_PROM_WORDS_NB];
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int (*temp_and_pressure_compensate)(struct ms5611_chip_info *chip_info,
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s32 *temp, s32 *pressure);
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};
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/*
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* OverSampling Rate descriptor.
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* Warning: cmd MUST be kept aligned on a word boundary (see
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* m5611_spi_read_adc_temp_and_pressure in ms5611_spi.c).
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*/
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struct ms5611_osr {
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unsigned long conv_usec;
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u8 cmd;
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unsigned short rate;
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};
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struct ms5611_state {
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void *client;
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struct mutex lock;
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const struct ms5611_osr *pressure_osr;
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const struct ms5611_osr *temp_osr;
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int (*reset)(struct device *dev);
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int (*read_prom_word)(struct device *dev, int index, u16 *word);
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int (*read_adc_temp_and_pressure)(struct device *dev,
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s32 *temp, s32 *pressure);
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struct ms5611_chip_info *chip_info;
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struct regulator *vdd;
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};
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int ms5611_probe(struct iio_dev *indio_dev, struct device *dev,
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const char *name, int type);
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int ms5611_remove(struct iio_dev *indio_dev);
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#endif /* _MS5611_H */
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