From: H Hartley Sweeten Date: Mon, 14 Jul 2014 19:23:39 +0000 (-0700) Subject: staging: comedi: comedidev.h: introduce some 'range_is_external' helpers X-Git-Tag: firefly_0821_release~176^2~3491^2~693 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=a8b677cb534c78e0aaa3c999891df07073e25566;p=firefly-linux-kernel-4.4.55.git 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 Reviewed-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- 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)