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iio: sx9500: fix bug in compensation code

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The initial compensation was mistakingly toggling an extra bit in the
control register.  Fix this and make sure it's less likely to happen by
introducing an additional macro.

Reported-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Vlad Dogaru <vlad.dogaru@intel.com>
Acked-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Vlad Dogaru 2015-06-30 14:20:59 +03:00 committed by Jonathan Cameron
parent 657c7ff56f
commit 68958bd5ca
1 changed files with 3 additions and 3 deletions
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6
drivers/iio/proximity/sx9500.c
View file

@ -80,6 +80,7 @@
#define SX9500_COMPSTAT_MASK GENMASK(3, 0)
#define SX9500_NUM_CHANNELS 4
#define SX9500_CHAN_MASK GENMASK(SX9500_NUM_CHANNELS - 1, 0)
struct sx9500_data {
struct mutex mutex;
@ -802,8 +803,7 @@ static int sx9500_init_compensation(struct iio_dev *indio_dev)
unsigned int val;
ret = regmap_update_bits(data->regmap, SX9500_REG_PROX_CTRL0,
GENMASK(SX9500_NUM_CHANNELS, 0),
GENMASK(SX9500_NUM_CHANNELS, 0));
SX9500_CHAN_MASK, SX9500_CHAN_MASK);
if (ret < 0)
return ret;
@ -823,7 +823,7 @@ static int sx9500_init_compensation(struct iio_dev *indio_dev)
out:
regmap_update_bits(data->regmap, SX9500_REG_PROX_CTRL0,
GENMASK(SX9500_NUM_CHANNELS, 0), 0);
SX9500_CHAN_MASK, 0);
return ret;
}