63 lines
1.3 KiB
C
63 lines
1.3 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
|
/*
|
||
|
|
* MS5611 pressure and temperature sensor driver
|
||
|
|
*
|
||
|
|
* Copyright (c) Tomasz Duszynski <tduszyns@gmail.com>
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _MS5611_H
|
||
|
|
#define _MS5611_H
|
||
|
|
|
||
|
|
#include <linux/device.h>
|
||
|
|
#include <linux/iio/iio.h>
|
||
|
|
#include <linux/mutex.h>
|
||
|
|
|
||
|
|
struct regulator;
|
||
|
|
|
||
|
|
#define MS5611_RESET 0x1e
|
||
|
|
#define MS5611_READ_ADC 0x00
|
||
|
|
#define MS5611_READ_PROM_WORD 0xA0
|
||
|
|
#define MS5611_PROM_WORDS_NB 8
|
||
|
|
|
||
|
|
enum {
|
||
|
|
MS5611,
|
||
|
|
MS5607,
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* OverSampling Rate descriptor.
|
||
|
|
* Warning: cmd MUST be kept aligned on a word boundary (see
|
||
|
|
* m5611_spi_read_adc_temp_and_pressure in ms5611_spi.c).
|
||
|
|
*/
|
||
|
|
struct ms5611_osr {
|
||
|
|
unsigned long conv_usec;
|
||
|
|
u8 cmd;
|
||
|
|
unsigned short rate;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct ms5611_state {
|
||
|
|
void *client;
|
||
|
|
struct mutex lock;
|
||
|
|
|
||
|
|
const struct ms5611_osr *pressure_osr;
|
||
|
|
const struct ms5611_osr *temp_osr;
|
||
|
|
|
||
|
|
u16 prom[MS5611_PROM_WORDS_NB];
|
||
|
|
|
||
|
|
int (*reset)(struct ms5611_state *st);
|
||
|
|
int (*read_prom_word)(struct ms5611_state *st, int index, u16 *word);
|
||
|
|
int (*read_adc_temp_and_pressure)(struct ms5611_state *st,
|
||
|
|
s32 *temp, s32 *pressure);
|
||
|
|
|
||
|
|
int (*compensate_temp_and_pressure)(struct ms5611_state *st, s32 *temp,
|
||
|
|
s32 *pressure);
|
||
|
|
struct regulator *vdd;
|
||
|
|
};
|
||
|
|
|
||
|
|
int ms5611_probe(struct iio_dev *indio_dev, struct device *dev,
|
||
|
|
const char *name, int type);
|
||
|
|
void ms5611_remove(struct iio_dev *indio_dev);
|
||
|
|
|
||
|
|
#endif /* _MS5611_H */
|