diff options
| author | Jiri Kosina <jkosina@suse.cz> | 2013-12-19 15:08:03 +0100 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2013-12-19 15:08:32 +0100 |
| commit | e23c34bb41da65f354fb7eee04300c56ee48f60c (patch) | |
| tree | 549fbe449d55273b81ef104a9755109bf4ae7817 /drivers/iio/dac/ad5764.c | |
| parent | b481c2cb3534c85dca625973b33eba15f9af3e4c (diff) | |
| parent | 319e2e3f63c348a9b66db4667efa73178e18b17d (diff) | |
Merge branch 'master' into for-next
Sync with Linus' tree to be able to apply fixes on top of newer things
in tree (efi-stub).
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/iio/dac/ad5764.c')
| -rw-r--r-- | drivers/iio/dac/ad5764.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/iio/dac/ad5764.c b/drivers/iio/dac/ad5764.c index df7e028d9db..a8ff5b2ed13 100644 --- a/drivers/iio/dac/ad5764.c +++ b/drivers/iio/dac/ad5764.c @@ -217,7 +217,6 @@ static int ad5764_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long info) { struct ad5764_state *st = iio_priv(indio_dev); - unsigned long scale_uv; unsigned int reg; int vref; int ret; @@ -245,15 +244,14 @@ static int ad5764_read_raw(struct iio_dev *indio_dev, *val = sign_extend32(*val, 5); return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: - /* vout = 4 * vref + ((dac_code / 65535) - 0.5) */ + /* vout = 4 * vref + ((dac_code / 65536) - 0.5) */ vref = ad5764_get_channel_vref(st, chan->channel); if (vref < 0) return vref; - scale_uv = (vref * 4 * 100) >> chan->scan_type.realbits; - *val = scale_uv / 100000; - *val2 = (scale_uv % 100000) * 10; - return IIO_VAL_INT_PLUS_MICRO; + *val = vref * 4 / 1000; + *val2 = chan->scan_type.realbits; + return IIO_VAL_FRACTIONAL_LOG2; case IIO_CHAN_INFO_OFFSET: *val = -(1 << chan->scan_type.realbits) / 2; return IIO_VAL_INT; |