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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 | ||
334ecdd0 GB |
19 | struct regulator; |
20 | ||
c0644160 TD |
21 | #define MS5611_RESET 0x1e |
22 | #define MS5611_READ_ADC 0x00 | |
23 | #define MS5611_READ_PROM_WORD 0xA0 | |
c0644160 TD |
24 | #define MS5611_PROM_WORDS_NB 8 |
25 | ||
9690d81a TD |
26 | enum { |
27 | MS5611, | |
28 | MS5607, | |
29 | }; | |
30 | ||
31 | struct 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 | ||
033691a9 GB |
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 | */ | |
43 | struct ms5611_osr { | |
44 | unsigned long conv_usec; | |
45 | u8 cmd; | |
46 | unsigned short rate; | |
47 | }; | |
48 | ||
c0644160 TD |
49 | struct ms5611_state { |
50 | void *client; | |
51 | struct mutex lock; | |
52 | ||
033691a9 GB |
53 | const struct ms5611_osr *pressure_osr; |
54 | const struct ms5611_osr *temp_osr; | |
55 | ||
c0644160 TD |
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 | ||
9690d81a | 61 | struct ms5611_chip_info *chip_info; |
334ecdd0 | 62 | struct regulator *vdd; |
c0644160 TD |
63 | }; |
64 | ||
eac635eb GB |
65 | int ms5611_probe(struct iio_dev *indio_dev, struct device *dev, |
66 | const char* name, int type); | |
713bbb4e | 67 | int ms5611_remove(struct iio_dev *indio_dev); |
c0644160 TD |
68 | |
69 | #endif /* _MS5611_H */ |