Commit 54ea1433 authored by Lars-Peter Clausen's avatar Lars-Peter Clausen Committed by Jonathan Cameron
Browse files

iio:ad5504: 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 0a99b601

drivers/iio/dac/ad5504.c

+3 −6
Original line number Diff line number Diff line
@@ -100,7 +100,6 @@ static int ad5504_read_raw(struct iio_dev *indio_dev, 
			   long m)

{

	struct ad5504_state *st = iio_priv(indio_dev);

	unsigned long scale_uv;

	int ret;



	switch (m) {
@@ -113,11 +112,9 @@ static int ad5504_read_raw(struct iio_dev *indio_dev, 


		return IIO_VAL_INT;

	case IIO_CHAN_INFO_SCALE:

		scale_uv = (st->vref_mv * 1000) >> chan->scan_type.realbits;

		*val =  scale_uv / 1000;

		*val2 = (scale_uv % 1000) * 1000;

		return IIO_VAL_INT_PLUS_MICRO;



		*val = st->vref_mv;

		*val2 = chan->scan_type.realbits;

		return IIO_VAL_FRACTIONAL_LOG2;

	}

	return -EINVAL;

}