On 09/28/13 10:31, Lars-Peter Clausen wrote:
> Move the complexity of calculating the fixed point scale to the core.
>
> Signed-off-by: Lars-Peter Clausen <lars@xxxxxxxxxx>
Applied
> ---
> 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;
> }
>
--
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