Move the complexity of calculating the fixed point scale to the core.
Signed-off-by: Lars-Peter Clausen <lars@xxxxxxxxxx>
---
drivers/staging/iio/adc/ad7780.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/drivers/staging/iio/adc/ad7780.c b/drivers/staging/iio/adc/ad7780.c
index 4f2522a..273add3 100644
--- a/drivers/staging/iio/adc/ad7780.c
+++ b/drivers/staging/iio/adc/ad7780.c
@@ -90,17 +90,14 @@ static int ad7780_read_raw(struct iio_dev *indio_dev,
long m)
{
struct ad7780_state *st = iio_priv(indio_dev);
- unsigned long scale_uv;
switch (m) {
case IIO_CHAN_INFO_RAW:
return ad_sigma_delta_single_conversion(indio_dev, chan, val);
case IIO_CHAN_INFO_SCALE:
- scale_uv = (st->int_vref_mv * 100000 * st->gain)
- >> (chan->scan_type.realbits - 1);
- *val = scale_uv / 100000;
- *val2 = (scale_uv % 100000) * 10;
- return IIO_VAL_INT_PLUS_MICRO;
+ *val = st->int_vref_mv * st->gain;
+ *val2 = chan->scan_type.realbits - 1;
+ return IIO_VAL_FRACTIONAL_LOG2;
case IIO_CHAN_INFO_OFFSET:
*val -= (1 << (chan->scan_type.realbits - 1));
return IIO_VAL_INT;
--
1.8.0
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