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authorHartmut Knaack <knaack.h@gmx.de>2014-10-31 01:22:00 +0000
committerJonathan Cameron <jic23@kernel.org>2014-11-05 15:58:35 +0000
commit81ebe850a019ccb8bf0a429fb463d9bfc15ec298 (patch)
tree7235e3aa02eebe7c6289f8b89c1e1c8d2cff16dd /fs
parentc1b501564c98a94b48f4ed936737403108dc7300 (diff)
downloadlinux-81ebe850a019ccb8bf0a429fb463d9bfc15ec298.tar.bz2
iio:pressure:bmp280: fix pressure calculation
According to the datasheet and as defined in struct bmp280_comp_press, dig_p1 is of type u16, while dig_p2 to dig_p9 are of type s16. In bmp280_read_compensation_press(), values read from the device were treated as the wrong type. In bmp280_read_press() the fractional part of the measured pressure is calculated wrong. A better way is to use *val for the raw pressure and *val2 for the quotient and let the core do the proper conversion using IIO_VAL_FRACTIONAL. Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Acked-by: Vlad Dogaru <vlad.dogaru@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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