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/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;
>
--
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