diff options
| author | H Hartley Sweeten <hsweeten@visionengravers.com> | 2014-07-14 12:23:39 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-07-16 13:24:41 -0700 |
| commit | a8b677cb534c78e0aaa3c999891df07073e25566 (patch) | |
| tree | 6cf32b615144ac319a40a0b9d1182ca704e2548f /drivers/staging/comedi/comedidev.h | |
| parent | ba9a1e3f07fc43df5f1b8bd8b0c72d0c3bbf5e16 (diff) | |
staging: comedi: comedidev.h: introduce some 'range_is_external' helpers
The comedi_krange includes a flags member that currently identifies the
'units' of the range (RF_UNIT) and if the range is from an internal or
external source (RF_EXTERNAL).
Introduce some helper functions to check if a given range is from an
external source.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/comedi/comedidev.h')
| -rw-r--r-- | drivers/staging/comedi/comedidev.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/staging/comedi/comedidev.h b/drivers/staging/comedi/comedidev.h index 01679458ab63..a7f24a9f0a23 100644 --- a/drivers/staging/comedi/comedidev.h +++ b/drivers/staging/comedi/comedidev.h @@ -363,6 +363,12 @@ static inline bool comedi_range_is_unipolar(struct comedi_subdevice *s, return s->range_table->range[range].min >= 0; } +static inline bool comedi_range_is_external(struct comedi_subdevice *s, + unsigned int range) +{ + return !!(s->range_table->range[range].flags & RF_EXTERNAL); +} + static inline bool comedi_chan_range_is_bipolar(struct comedi_subdevice *s, unsigned int chan, unsigned int range) @@ -377,6 +383,13 @@ static inline bool comedi_chan_range_is_unipolar(struct comedi_subdevice *s, return s->range_table_list[chan]->range[range].min >= 0; } +static inline bool comedi_chan_range_is_external(struct comedi_subdevice *s, + unsigned int chan, + unsigned int range) +{ + return !!(s->range_table_list[chan]->range[range].flags & RF_EXTERNAL); +} + /* munge between offset binary and two's complement values */ static inline unsigned int comedi_offset_munge(struct comedi_subdevice *s, unsigned int val) |