aboutsummaryrefslogtreecommitdiff
path: root/drivers/iio/pressure/ms5611.h
blob: 8b08e4b7e3a9b4778590b89fd33ce1961de7a61a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
/*
 * 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,
                 const char* name, int type);
int ms5611_remove(struct iio_dev *indio_dev);

#endif /* _MS5611_H */