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authorLars-Peter Clausen <lars@metafoo.de>2013-09-28 10:31:00 +0100
committerJonathan Cameron <jic23@kernel.org>2013-10-01 16:19:11 +0100
commit998f129c76e2030ad2e68cf59d75eef0e5a58fd3 (patch)
tree18b523c864fabd5b96fd0c5abcee1eac560c7faa /drivers/iio/dac
parent213983cd32a7d983675d86ece17ac040bd39fd47 (diff)
downloadop-kernel-dev-998f129c76e2030ad2e68cf59d75eef0e5a58fd3.zip
op-kernel-dev-998f129c76e2030ad2e68cf59d75eef0e5a58fd3.tar.gz
iio:max517: 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/iio/dac')
-rw-r--r--drivers/iio/dac/max517.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/drivers/iio/dac/max517.c b/drivers/iio/dac/max517.c
index 83adcbf..d26be14 100644
--- a/drivers/iio/dac/max517.c
+++ b/drivers/iio/dac/max517.c
@@ -82,15 +82,13 @@ static int max517_read_raw(struct iio_dev *indio_dev,
long m)
{
struct max517_data *data = iio_priv(indio_dev);
- unsigned int scale_uv;
switch (m) {
case IIO_CHAN_INFO_SCALE:
/* Corresponds to Vref / 2^(bits) */
- scale_uv = (data->vref_mv[chan->channel] * 1000) >> 8;
- *val = scale_uv / 1000000;
- *val2 = scale_uv % 1000000;
- return IIO_VAL_INT_PLUS_MICRO;
+ *val = data->vref_mv[chan->channel];
+ *val2 = 8;
+ return IIO_VAL_FRACTIONAL_LOG2;
default:
break;
}
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