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
30struct ms5611_state {
31	void *client;
32	struct mutex lock;
33
34	int (*reset)(struct device *dev);
35	int (*read_prom_word)(struct device *dev, int index, u16 *word);
36	int (*read_adc_temp_and_pressure)(struct device *dev,
37					  s32 *temp, s32 *pressure);
38
39	u16 prom[MS5611_PROM_WORDS_NB];
40};
41
42int ms5611_probe(struct iio_dev *indio_dev, struct device *dev);
43
44#endif /* _MS5611_H */
45