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| author | Lars-Peter Clausen <lars@metafoo.de> | 2013-09-28 10:31:00 +0100 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2013-10-01 16:19:10 +0100 |
| commit | ecc7e948bca09b97b6b1d0f4b4516bee34e8ce6b (patch) | |
| tree | fffe2d519853385532114e31d6fce328a1450f42 | |
| parent | 14229e87a977c3c33bd33a95b77d2de48d2b46e9 (diff) | |
| download | linux-ecc7e948bca09b97b6b1d0f4b4516bee34e8ce6b.tar.gz linux-ecc7e948bca09b97b6b1d0f4b4516bee34e8ce6b.tar.bz2 linux-ecc7e948bca09b97b6b1d0f4b4516bee34e8ce6b.zip | |
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>
| -rw-r--r-- | drivers/iio/dac/ad5686.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/drivers/iio/dac/ad5686.c b/drivers/iio/dac/ad5686.c index f472b48445f6..30e506e37dd2 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; } |