diff options
| author | Lars-Peter Clausen <lars@metafoo.de> | 2013-09-28 13:31:00 +0400 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2013-10-01 19:19:09 +0400 |
| commit | 54ea14339ddd28b935773d65257024757c9358d5 (patch) | |
| tree | 1a96cd4d43499916933435e4029d1281ff0513dc /drivers/iio/dac | |
| parent | 0a99b6014343e39d7e01ebfc386fb16c8a5a6826 (diff) | |
| download | linux-54ea14339ddd28b935773d65257024757c9358d5.tar.xz | |
iio:ad5504: 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/ad5504.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/drivers/iio/dac/ad5504.c b/drivers/iio/dac/ad5504.c index 31f4ff29f914..c0957a918e17 100644 --- a/drivers/iio/dac/ad5504.c +++ b/drivers/iio/dac/ad5504.c @@ -100,7 +100,6 @@ static int ad5504_read_raw(struct iio_dev *indio_dev, long m) { struct ad5504_state *st = iio_priv(indio_dev); - unsigned long scale_uv; int ret; switch (m) { @@ -113,11 +112,9 @@ static int ad5504_read_raw(struct iio_dev *indio_dev, return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: - scale_uv = (st->vref_mv * 1000) >> chan->scan_type.realbits; - *val = scale_uv / 1000; - *val2 = (scale_uv % 1000) * 1000; - return IIO_VAL_INT_PLUS_MICRO; - + *val = st->vref_mv; + *val2 = chan->scan_type.realbits; + return IIO_VAL_FRACTIONAL_LOG2; } return -EINVAL; } |