1 /* 2 * MS5611 pressure and temperature sensor driver 3 * 4 * Copyright (c) Tomasz Duszynski <tduszyns@gmail.com> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 * 10 */ 11 12 #ifndef _MS5611_H 13 #define _MS5611_H 14 15 #include <linux/device.h> 16 #include <linux/iio/iio.h> 17 #include <linux/mutex.h> 18 19 #define MS5611_RESET 0x1e 20 #define MS5611_READ_ADC 0x00 21 #define MS5611_READ_PROM_WORD 0xA0 22 #define MS5611_START_TEMP_CONV 0x58 23 #define MS5611_START_PRESSURE_CONV 0x48 24 25 #define MS5611_CONV_TIME_MIN 9040 26 #define MS5611_CONV_TIME_MAX 10000 27 28 #define MS5611_PROM_WORDS_NB 8 29 30 enum { 31 MS5611, 32 MS5607, 33 }; 34 35 struct ms5611_chip_info { 36 u16 prom[MS5611_PROM_WORDS_NB]; 37 38 int (*temp_and_pressure_compensate)(struct ms5611_chip_info *chip_info, 39 s32 *temp, s32 *pressure); 40 }; 41 42 struct ms5611_state { 43 void *client; 44 struct mutex lock; 45 46 int (*reset)(struct device *dev); 47 int (*read_prom_word)(struct device *dev, int index, u16 *word); 48 int (*read_adc_temp_and_pressure)(struct device *dev, 49 s32 *temp, s32 *pressure); 50 51 struct ms5611_chip_info *chip_info; 52 }; 53 54 int ms5611_probe(struct iio_dev *indio_dev, struct device *dev, int type); 55 56 #endif /* _MS5611_H */ 57