From 54ea14339ddd28b935773d65257024757c9358d5 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Sat, 28 Sep 2013 10:31:00 +0100 Subject: [PATCH] iio:ad5504: Report scale as fractional value Move the complexity of calculating the fixed point scale to the core. Signed-off-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron --- drivers/iio/dac/ad5504.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/iio/dac/ad5504.c b/drivers/iio/dac/ad5504.c index 31f4ff29f914..c0957a918e17 100644 --- a/drivers/iio/dac/ad5504.c +++ b/drivers/iio/dac/ad5504.c @@ -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; }