iio:max1363: 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>
diff --git a/drivers/iio/adc/max1363.c b/drivers/iio/adc/max1363.c
index b4bc166..2b34d2f 100644
--- a/drivers/iio/adc/max1363.c
+++ b/drivers/iio/adc/max1363.c
@@ -397,7 +397,6 @@
{
struct max1363_state *st = iio_priv(indio_dev);
int ret;
- unsigned long scale_uv;
switch (m) {
case IIO_CHAN_INFO_RAW:
@@ -406,10 +405,9 @@
return ret;
return IIO_VAL_INT;
case IIO_CHAN_INFO_SCALE:
- scale_uv = st->vref_uv >> st->chip_info->bits;
- *val = scale_uv / 1000;
- *val2 = (scale_uv % 1000) * 1000;
- return IIO_VAL_INT_PLUS_MICRO;
+ *val = st->vref_uv / 1000;
+ *val2 = st->chip_info->bits;
+ return IIO_VAL_FRACTIONAL_LOG2;
default:
return -EINVAL;
}