iio:ad5064: 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>

1 files changed, 3 insertions, 4 deletions

diff --git a/drivers/iio/dac/ad5064.c b/drivers/iio/dac/ad5064.c
index b18e8c4347c2..cb9c6366032c 100644
--- a/drivers/iio/dac/ad5064.c
+++ b/drivers/iio/dac/ad5064.c
@@ -239,10 +239,9 @@ static int ad5064_read_raw(struct iio_dev *indio_dev,
                 if (scale_uv < 0)
                         return scale_uv;
 
-                scale_uv = (scale_uv * 100) >> chan->scan_type.realbits;
-                *val =  scale_uv / 100000;
-                *val2 = (scale_uv % 100000) * 10;
-                return IIO_VAL_INT_PLUS_MICRO;
+                *val = scale_uv / 1000;
+                *val2 = chan->scan_type.realbits;
+                return IIO_VAL_FRACTIONAL_LOG2;
         default:
                 break;
         }