[linux-2.6-block.git] / drivers / iio / pressure / ms5611.h

/*
 * MS5611 pressure and temperature sensor driver
 *
 * Copyright (c) Tomasz Duszynski <tduszyns@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 */

#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,
};

struct ms5611_chip_info {
	u16 prom[MS5611_PROM_WORDS_NB];

	int (*temp_and_pressure_compensate)(struct ms5611_chip_info *chip_info,
					    s32 *temp, s32 *pressure);
};

/*
 * 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;

	int (*reset)(struct device *dev);
	int (*read_prom_word)(struct device *dev, int index, u16 *word);
	int (*read_adc_temp_and_pressure)(struct device *dev,
					  s32 *temp, s32 *pressure);

	struct ms5611_chip_info *chip_info;
	struct regulator *vdd;
};

int ms5611_probe(struct iio_dev *indio_dev, struct device *dev,
                 const char* name, int type);
int ms5611_remove(struct iio_dev *indio_dev);

#endif /* _MS5611_H */
Commit	Line	Data
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;
334ecdd0 GB	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
c0644160 TD	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	};
c0644160 TD	64
eac635eb GB	65	int ms5611_probe(struct iio_dev indio_dev, struct device dev,
eac635eb GB	66	const char* name, int type);
713bbb4e	67	int ms5611_remove(struct iio_dev *indio_dev);
c0644160 TD	68
c0644160 TD	69	#endif /* _MS5611_H */