From b740f48a3d0d118b160db7c9559fb75de8af8657 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Sat, 28 Sep 2013 10:31:00 +0100 Subject: [PATCH] staging:iio:ad799x: 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/staging/iio/adc/ad799x_core.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/staging/iio/adc/ad799x_core.c b/drivers/staging/iio/adc/ad799x_core.c index 3f5142b..eb6a690 100644 --- a/drivers/staging/iio/adc/ad799x_core.c +++ b/drivers/staging/iio/adc/ad799x_core.c @@ -163,7 +163,6 @@ static int ad799x_read_raw(struct iio_dev *indio_dev, { int ret; struct ad799x_state *st = iio_priv(indio_dev); - unsigned int scale_uv; switch (m) { case IIO_CHAN_INFO_RAW: @@ -180,10 +179,9 @@ static int ad799x_read_raw(struct iio_dev *indio_dev, RES_MASK(chan->scan_type.realbits); return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: - scale_uv = (st->int_vref_mv * 1000) >> chan->scan_type.realbits; - *val = scale_uv / 1000; - *val2 = (scale_uv % 1000) * 1000; - return IIO_VAL_INT_PLUS_MICRO; + *val = st->int_vref_mv; + *val2 = chan->scan_type.realbits; + return IIO_VAL_FRACTIONAL_LOG2; } return -EINVAL; } -- 2.7.4