Commit ecc7e948 authored by Lars-Peter Clausen's avatar Lars-Peter Clausen Committed by Jonathan Cameron
Browse files

iio:ad5686: Report scale as fractional value 



Move the complexity of calculating the fixed point scale to the core.

Signed-off-by: default avatarLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent 14229e87

drivers/iio/dac/ad5686.c

+3 −7
Original line number Diff line number Diff line
@@ -201,7 +201,6 @@ static int ad5686_read_raw(struct iio_dev *indio_dev, 
			   long m)

{

	struct ad5686_state *st = iio_priv(indio_dev);

	unsigned long scale_uv;

	int ret;



	switch (m) {
@@ -214,12 +213,9 @@ static int ad5686_read_raw(struct iio_dev *indio_dev, 
		*val = ret;

		return IIO_VAL_INT;

	case IIO_CHAN_INFO_SCALE:

		scale_uv = (st->vref_mv * 100000)

			>> (chan->scan_type.realbits);

		*val =  scale_uv / 100000;

		*val2 = (scale_uv % 100000) * 10;

		return IIO_VAL_INT_PLUS_MICRO;



		*val = st->vref_mv;

		*val2 = chan->scan_type.realbits;

		return IIO_VAL_FRACTIONAL_LOG2;

	}

	return -EINVAL;

}