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| author | Jonathan Cameron <jic23@cam.ac.uk> | 2011-10-26 16:41:36 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-11-27 00:35:04 (GMT) |
| commit | c8a9f8056f40f6201b84fdddb49a1c62630902c5 (patch) | |
| tree | ec883343656925d7f0e88decf16689c4f47b8822 /drivers/staging/iio/dac/ad5791.c | |
| parent | 924f8a21dd13223cc1493a916c6769cf73e0d45e (diff) | |
| download | linux-fsl-qoriq-c8a9f8056f40f6201b84fdddb49a1c62630902c5.tar.xz | |
staging:iio:treewide only use shared to decide on interfaces
Internally the fact that say scale is shared across channels is
actually of remarkably little interest. Hence lets not store it.
Numerous devices have weird combinations of channels sharing
scale anyway so it is not as though this was really telling
us much. Note however that we do still use the shared sysfs
attrs thus massively reducing the number of attrs in complex
drivers.
Side effect is that certain drivers that were abusing this
(mostly my work) needed to do a few more checks on what the
channel they are being queried on actually is.
This is also helpful for in kernel interfaces where we
just want to query the scale and don't care whether it
is shared with other channels or not.
Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/iio/dac/ad5791.c')
| -rw-r--r-- | drivers/staging/iio/dac/ad5791.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/staging/iio/dac/ad5791.c b/drivers/staging/iio/dac/ad5791.c index d3b3b71..db0bd12 100644 --- a/drivers/staging/iio/dac/ad5791.c +++ b/drivers/staging/iio/dac/ad5791.c @@ -77,8 +77,8 @@ static int ad5791_spi_read(struct spi_device *spi, u8 addr, u32 *val) .indexed = 1, \ .address = AD5791_ADDR_DAC0, \ .channel = 0, \ - .info_mask = (1 << IIO_CHAN_INFO_SCALE_SHARED) | \ - (1 << IIO_CHAN_INFO_OFFSET_SHARED), \ + .info_mask = IIO_CHAN_INFO_SCALE_SHARED_BIT | \ + IIO_CHAN_INFO_OFFSET_SHARED_BIT, \ .scan_type = IIO_ST('u', bits, 24, shift) \ } @@ -237,11 +237,11 @@ static int ad5791_read_raw(struct iio_dev *indio_dev, *val &= AD5791_DAC_MASK; *val >>= chan->scan_type.shift; return IIO_VAL_INT; - case IIO_CHAN_INFO_SCALE_SHARED: + case IIO_CHAN_INFO_SCALE: *val = 0; *val2 = (((u64)st->vref_mv) * 1000000ULL) >> chan->scan_type.realbits; return IIO_VAL_INT_PLUS_MICRO; - case IIO_CHAN_INFO_OFFSET_SHARED: + case IIO_CHAN_INFO_OFFSET: val64 = (((u64)st->vref_neg_mv) << chan->scan_type.realbits); do_div(val64, st->vref_mv); *val = -val64; |