1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * MS5611 pressure and temperature sensor driver
 4 *
 5 * Copyright (c) Tomasz Duszynski <tduszyns@gmail.com>
 6 *
 7 */
 8
 9#ifndef _MS5611_H
10#define _MS5611_H
11
12#include <linux/device.h>
13#include <linux/iio/iio.h>
14#include <linux/mutex.h>
15
16struct regulator;
17
18#define MS5611_RESET			0x1e
19#define MS5611_READ_ADC			0x00
20#define MS5611_READ_PROM_WORD		0xA0
21#define MS5611_PROM_WORDS_NB		8
22
23enum {
24	MS5611,
25	MS5607,
26};
27
28struct ms5611_chip_info {
29	u16 prom[MS5611_PROM_WORDS_NB];
30
31	int (*temp_and_pressure_compensate)(struct ms5611_chip_info *chip_info,
32					    s32 *temp, s32 *pressure);
33};
34
35/*
36 * OverSampling Rate descriptor.
37 * Warning: cmd MUST be kept aligned on a word boundary (see
38 * m5611_spi_read_adc_temp_and_pressure in ms5611_spi.c).
39 */
40struct ms5611_osr {
41	unsigned long conv_usec;
42	u8 cmd;
43	unsigned short rate;
44};
45
46struct ms5611_state {
47	void *client;
48	struct mutex lock;
49
50	const struct ms5611_osr *pressure_osr;
51	const struct ms5611_osr *temp_osr;
52
53	int (*reset)(struct device *dev);
54	int (*read_prom_word)(struct device *dev, int index, u16 *word);
55	int (*read_adc_temp_and_pressure)(struct device *dev,
56					  s32 *temp, s32 *pressure);
57
58	struct ms5611_chip_info *chip_info;
59	struct regulator *vdd;
60};
61
62int ms5611_probe(struct iio_dev *indio_dev, struct device *dev,
63		 const char *name, int type);
64int ms5611_remove(struct iio_dev *indio_dev);
65
66#endif /* _MS5611_H */