On 2014-07-14 20:23, H Hartley Sweeten wrote:
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 <hswee...@visionengravers.com> Cc: Ian Abbott <abbo...@mev.co.uk> Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org> --- drivers/staging/comedi/comedidev.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/staging/comedi/comedidev.h b/drivers/staging/comedi/comedidev.h index 83fd155..6af6467 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)
Converting any value to _Bool (typedef'd to bool in <linux/types.h>) automatically produces the value 0 or 1, so the "double logical NOT" operators are redundant here. They're harmless though!
-- -=( Ian Abbott @ MEV Ltd. E-mail: <abbo...@mev.co.uk> )=- -=( Tel: +44 (0)161 477 1898 FAX: +44 (0)161 718 3587 )=- _______________________________________________ devel mailing list de...@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
