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c0644160 TD |
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 | ||
9690d81a TD |
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 | ||
c0644160 TD |
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 | ||
9690d81a | 51 | struct ms5611_chip_info *chip_info; |
c0644160 TD |
52 | }; |
53 | ||
9690d81a | 54 | int ms5611_probe(struct iio_dev *indio_dev, struct device *dev, int type); |
c0644160 TD |
55 | |
56 | #endif /* _MS5611_H */ |