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author | Lars-Peter Clausen <lars@metafoo.de> | 2013-09-28 10:31:00 +0100 |
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committer | Jonathan Cameron <jic23@kernel.org> | 2013-10-01 16:19:11 +0100 |
commit | 998f129c76e2030ad2e68cf59d75eef0e5a58fd3 (patch) | |
tree | 18b523c864fabd5b96fd0c5abcee1eac560c7faa /drivers/iio/dac | |
parent | 213983cd32a7d983675d86ece17ac040bd39fd47 (diff) | |
download | op-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.c | 8 |
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; } |