This is a bit more straight forward and also allows better precession when using
the an in-kernel consumer.
Signed-off-by: Lars-Peter Clausen <lars@xxxxxxxxxx>
---
drivers/staging/iio/adc/ad7291.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/drivers/staging/iio/adc/ad7291.c b/drivers/staging/iio/adc/ad7291.c
index d088c66..a3a3a2f 100644
--- a/drivers/staging/iio/adc/ad7291.c
+++ b/drivers/staging/iio/adc/ad7291.c
@@ -456,7 +456,6 @@ static int ad7291_read_raw(struct iio_dev *indio_dev,
{
int ret;
struct ad7291_chip_info *chip = iio_priv(indio_dev);
- unsigned int scale_uv;
u16 regval;
s16 signval;
@@ -513,10 +512,9 @@ static int ad7291_read_raw(struct iio_dev *indio_dev,
case IIO_CHAN_INFO_SCALE:
switch (chan->type) {
case IIO_VOLTAGE:
- scale_uv = (chip->int_vref_mv * 1000) >> AD7291_BITS;
- *val = scale_uv / 1000;
- *val2 = (scale_uv % 1000) * 1000;
- return IIO_VAL_INT_PLUS_MICRO;
+ *val = chip->int_vref_mv;
+ *val2 = AD7291_BITS;
+ return IIO_VAL_FRACTIONAL_LOG2;
case IIO_TEMP:
/*
* One LSB of the ADC corresponds to 0.25 deg C.
--
1.8.0
--
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