diff options
Diffstat (limited to 'drivers/iio/pressure/ms5611.h')
| -rw-r--r-- | drivers/iio/pressure/ms5611.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/iio/pressure/ms5611.h b/drivers/iio/pressure/ms5611.h new file mode 100644 index 000000000000..099c6cdea43f --- /dev/null +++ b/drivers/iio/pressure/ms5611.h @@ -0,0 +1,44 @@ +/* + * 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> + +#define MS5611_RESET 0x1e +#define MS5611_READ_ADC 0x00 +#define MS5611_READ_PROM_WORD 0xA0 +#define MS5611_START_TEMP_CONV 0x58 +#define MS5611_START_PRESSURE_CONV 0x48 + +#define MS5611_CONV_TIME_MIN 9040 +#define MS5611_CONV_TIME_MAX 10000 + +#define MS5611_PROM_WORDS_NB 8 + +struct ms5611_state { + void *client; + struct mutex lock; + + 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); + + u16 prom[MS5611_PROM_WORDS_NB]; +}; + +int ms5611_probe(struct iio_dev *indio_dev, struct device *dev); + +#endif /* _MS5611_H */ |