Commit 213983cd authored by Lars-Peter Clausen's avatar Lars-Peter Clausen Committed by Jonathan Cameron
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iio:ad5791: 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 3f83dae8

drivers/iio/dac/ad5791.c

+3 −3
Original line number Diff line number Diff line
@@ -270,9 +270,9 @@ static int ad5791_read_raw(struct iio_dev *indio_dev, 
		*val >>= chan->scan_type.shift;

		return IIO_VAL_INT;

	case IIO_CHAN_INFO_SCALE:

		*val = 0;

		*val2 = (((u64)st->vref_mv) * 1000000ULL) >> chan->scan_type.realbits;

		return IIO_VAL_INT_PLUS_MICRO;

		*val = st->vref_mv;

		*val2 = (1 << chan->scan_type.realbits) - 1;

		return IIO_VAL_FRACTIONAL;

	case IIO_CHAN_INFO_OFFSET:

		val64 = (((u64)st->vref_neg_mv) << chan->scan_type.realbits);

		do_div(val64, st->vref_mv);