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kernel/linux-rt-4.4.41/drivers/iio/pressure/ms5611.h 1.26 KB
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  /*
   * MS5611 pressure and temperature sensor driver
   *
   * Copyright (c) Tomasz Duszynski <tduszyns@gmail.com>
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
   *
   */
  
  #ifndef _MS5611_H
  #define _MS5611_H
  
  #include <linux/device.h>
  #include <linux/iio/iio.h>
  #include <linux/mutex.h>
  
  #define MS5611_RESET			0x1e
  #define MS5611_READ_ADC			0x00
  #define MS5611_READ_PROM_WORD		0xA0
  #define MS5611_START_TEMP_CONV		0x58
  #define MS5611_START_PRESSURE_CONV	0x48
  
  #define MS5611_CONV_TIME_MIN		9040
  #define MS5611_CONV_TIME_MAX		10000
  
  #define MS5611_PROM_WORDS_NB		8
  
  enum {
  	MS5611,
  	MS5607,
  };
  
  struct ms5611_chip_info {
  	u16 prom[MS5611_PROM_WORDS_NB];
  
  	int (*temp_and_pressure_compensate)(struct ms5611_chip_info *chip_info,
  					    s32 *temp, s32 *pressure);
  };
  
  struct ms5611_state {
  	void *client;
  	struct mutex lock;
  
  	int (*reset)(struct device *dev);
  	int (*read_prom_word)(struct device *dev, int index, u16 *word);
  	int (*read_adc_temp_and_pressure)(struct device *dev,
  					  s32 *temp, s32 *pressure);
  
  	struct ms5611_chip_info *chip_info;
  };
  
  int ms5611_probe(struct iio_dev *indio_dev, struct device *dev, int type);
  
  #endif /* _MS5611_H */