From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Lars-Peter Clausen To: Jonathan Cameron Cc: linux-iio@vger.kernel.org, Lars-Peter Clausen Subject: [PATCH 08/25] iio:ad5686: Report scale as fractional value Date: Sat, 28 Sep 2013 11:31:40 +0200 Message-Id: <1380360717-26103-8-git-send-email-lars@metafoo.de> In-Reply-To: <1380360717-26103-1-git-send-email-lars@metafoo.de> References: <1380360717-26103-1-git-send-email-lars@metafoo.de> List-ID: Move the complexity of calculating the fixed point scale to the core. Signed-off-by: Lars-Peter Clausen --- drivers/iio/dac/ad5686.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) diff --git a/drivers/iio/dac/ad5686.c b/drivers/iio/dac/ad5686.c index f472b48..30e506e 100644 --- a/drivers/iio/dac/ad5686.c +++ b/drivers/iio/dac/ad5686.c @@ -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; } -- 1.8.0