diff options
| author | Lars-Peter Clausen <lars@metafoo.de> | 2013-09-28 09:31:00 (GMT) |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2013-10-01 15:19:09 (GMT) |
| commit | 0a99b6014343e39d7e01ebfc386fb16c8a5a6826 (patch) | |
| tree | 2c290481aad87bae73580b07268724bb54cf252f /drivers/iio/dac | |
| parent | bc7c49bc77ba95609236f23082a38ec160416a8d (diff) | |
| download | linux-fsl-qoriq-0a99b6014343e39d7e01ebfc386fb16c8a5a6826.tar.xz | |
iio:ad5446: 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/ad5446.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/drivers/iio/dac/ad5446.c b/drivers/iio/dac/ad5446.c index 8e28d36..1263b0e 100644 --- a/drivers/iio/dac/ad5446.c +++ b/drivers/iio/dac/ad5446.c @@ -163,18 +163,15 @@ static int ad5446_read_raw(struct iio_dev *indio_dev, long m) { struct ad5446_state *st = iio_priv(indio_dev); - unsigned long scale_uv; switch (m) { case IIO_CHAN_INFO_RAW: *val = st->cached_val; 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; } |