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authorLars-Peter Clausen <lars@metafoo.de>2013-09-28 10:31:00 +0100
committerJonathan Cameron <jic23@kernel.org>2013-10-01 16:19:10 +0100
commitecc7e948bca09b97b6b1d0f4b4516bee34e8ce6b (patch)
treefffe2d519853385532114e31d6fce328a1450f42 /drivers/iio/dac
parent14229e87a977c3c33bd33a95b77d2de48d2b46e9 (diff)
downloadop-kernel-dev-ecc7e948bca09b97b6b1d0f4b4516bee34e8ce6b.zip
op-kernel-dev-ecc7e948bca09b97b6b1d0f4b4516bee34e8ce6b.tar.gz
iio:ad5686: Report scale as fractional value
Move the complexity of calculating the fixed point scale to the core. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio/dac')
-rw-r--r--drivers/iio/dac/ad5686.c10
1 files changed, 3 insertions, 7 deletions
diff --git a/drivers/iio/dac/ad5686.c b/drivers/iio/dac/ad5686.c
index f472b48..30e506e 100644
--- a/drivers/iio/dac/ad5686.c
+++ b/drivers/iio/dac/ad5686.c
@@ -201,7 +201,6 @@ static int ad5686_read_raw(struct iio_dev *indio_dev,
long m)
{
struct ad5686_state *st = iio_priv(indio_dev);
- unsigned long scale_uv;
int ret;
switch (m) {
@@ -214,12 +213,9 @@ static int ad5686_read_raw(struct iio_dev *indio_dev,
*val = ret;
return IIO_VAL_INT;
case IIO_CHAN_INFO_SCALE:
- scale_uv = (st->vref_mv * 100000)
- >> (chan->scan_type.realbits);
- *val = scale_uv / 100000;
- *val2 = (scale_uv % 100000) * 10;
- return IIO_VAL_INT_PLUS_MICRO;
-
+ *val = st->vref_mv;
+ *val2 = chan->scan_type.realbits;
+ return IIO_VAL_FRACTIONAL_LOG2;
}
return -EINVAL;
}
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