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
19struct regulator;
20
21#define MS5611_RESET			0x1e
22#define MS5611_READ_ADC			0x00
23#define MS5611_READ_PROM_WORD		0xA0
24#define MS5611_PROM_WORDS_NB		8
25
26enum {
27	MS5611,
28	MS5607,
29};
30
31struct ms5611_chip_info {
32	u16 prom[MS5611_PROM_WORDS_NB];
33
34	int (*temp_and_pressure_compensate)(struct ms5611_chip_info *chip_info,
35					    s32 *temp, s32 *pressure);
36};
37
38/*
39 * OverSampling Rate descriptor.
40 * Warning: cmd MUST be kept aligned on a word boundary (see
41 * m5611_spi_read_adc_temp_and_pressure in ms5611_spi.c).
42 */
43struct ms5611_osr {
44	unsigned long conv_usec;
45	u8 cmd;
46	unsigned short rate;
47};
48
49struct ms5611_state {
50	void *client;
51	struct mutex lock;
52
53	const struct ms5611_osr *pressure_osr;
54	const struct ms5611_osr *temp_osr;
55
56	int (*reset)(struct device *dev);
57	int (*read_prom_word)(struct device *dev, int index, u16 *word);
58	int (*read_adc_temp_and_pressure)(struct device *dev,
59					  s32 *temp, s32 *pressure);
60
61	struct ms5611_chip_info *chip_info;
62	struct regulator *vdd;
63};
64
65int ms5611_probe(struct iio_dev *indio_dev, struct device *dev,
66                 const char* name, int type);
67int ms5611_remove(struct iio_dev *indio_dev);
68
69#endif /* _MS5611_H */