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| author | Lars-Peter Clausen <lars@metafoo.de> | 2013-09-28 13:31:00 +0400 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2013-10-01 19:19:11 +0400 |
| commit | 998f129c76e2030ad2e68cf59d75eef0e5a58fd3 (patch) | |
| tree | 18b523c864fabd5b96fd0c5abcee1eac560c7faa /drivers/iio/dac | |
| parent | 213983cd32a7d983675d86ece17ac040bd39fd47 (diff) | |
| download | linux-998f129c76e2030ad2e68cf59d75eef0e5a58fd3.tar.xz | |
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 83adcbf1a205..d26be14fff64 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; } |