diff options
author | Lars-Peter Clausen <lars@metafoo.de> | 2013-09-28 05:31:00 -0400 |
---|---|---|
committer | Jonathan Cameron <jic23@kernel.org> | 2013-10-01 11:19:10 -0400 |
commit | 14229e87a977c3c33bd33a95b77d2de48d2b46e9 (patch) | |
tree | aaf687eb326124cacdc4a8aff01b18b80c2daf1c /drivers | |
parent | 54ea14339ddd28b935773d65257024757c9358d5 (diff) |
iio:ad5624r: Report scale as fractional value
Move the complexity of calculating the fixed point scale to the core.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/iio/dac/ad5624r_spi.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/drivers/iio/dac/ad5624r_spi.c b/drivers/iio/dac/ad5624r_spi.c index dbb1289cc7a6..774dd968145b 100644 --- a/drivers/iio/dac/ad5624r_spi.c +++ b/drivers/iio/dac/ad5624r_spi.c | |||
@@ -50,15 +50,12 @@ static int ad5624r_read_raw(struct iio_dev *indio_dev, | |||
50 | long m) | 50 | long m) |
51 | { | 51 | { |
52 | struct ad5624r_state *st = iio_priv(indio_dev); | 52 | struct ad5624r_state *st = iio_priv(indio_dev); |
53 | unsigned long scale_uv; | ||
54 | 53 | ||
55 | switch (m) { | 54 | switch (m) { |
56 | case IIO_CHAN_INFO_SCALE: | 55 | case IIO_CHAN_INFO_SCALE: |
57 | scale_uv = (st->vref_mv * 1000) >> chan->scan_type.realbits; | 56 | *val = st->vref_mv; |
58 | *val = scale_uv / 1000; | 57 | *val2 = chan->scan_type.realbits; |
59 | *val2 = (scale_uv % 1000) * 1000; | 58 | return IIO_VAL_FRACTIONAL_LOG2; |
60 | return IIO_VAL_INT_PLUS_MICRO; | ||
61 | |||
62 | } | 59 | } |
63 | return -EINVAL; | 60 | return -EINVAL; |
64 | } | 61 | } |