Move the complexity of calculating the fixed point scale to the core.
Signed-off-by: Lars-Peter Clausen <lars@xxxxxxxxxx>
---
drivers/staging/iio/adc/ad7280a.c | 10 ++++------
1 file changed, 4 insertions(+), 6 deletions(-)
diff --git a/drivers/staging/iio/adc/ad7280a.c b/drivers/staging/iio/adc/ad7280a.c
index e7191e4..8209fa5 100644
--- a/drivers/staging/iio/adc/ad7280a.c
+++ b/drivers/staging/iio/adc/ad7280a.c
@@ -783,7 +783,6 @@ static int ad7280_read_raw(struct iio_dev *indio_dev,
long m)
{
struct ad7280_state *st = iio_priv(indio_dev);
- unsigned int scale_uv;
int ret;
switch (m) {
@@ -804,13 +803,12 @@ static int ad7280_read_raw(struct iio_dev *indio_dev,
return IIO_VAL_INT;
case IIO_CHAN_INFO_SCALE:
if ((chan->address & 0xFF) <= AD7280A_CELL_VOLTAGE_6)
- scale_uv = (4000 * 1000) >> AD7280A_BITS;
+ *val = 4000;
else
- scale_uv = (5000 * 1000) >> AD7280A_BITS;
+ *val = 5000;
- *val = scale_uv / 1000;
- *val2 = (scale_uv % 1000) * 1000;
- return IIO_VAL_INT_PLUS_MICRO;
+ *val2 = AD7280A_BITS;
+ return IIO_VAL_FRACTIONAL_LOG2;
}
return -EINVAL;
}
--
1.8.0
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