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staging: comedi: das1800: allow setting the external trigger polarity
authorH Hartley Sweeten <hsweeten@visionengravers.com>
Fri, 8 Apr 2016 19:42:05 +0000 (12:42 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 29 Apr 2016 05:16:10 +0000 (22:16 -0700)
commita6b7dbb2be27636e80e4124f157e08b33e451b80
treeb9be3ac09f2854919e69ddd89d64509020931680tree | snapshot
parenta2706b094353b6210446af3be174c9eddfd7ce01commit | diff
staging: comedi: das1800: allow setting the external trigger polarity

The external pin TGIN can be used to start and/or stop the analog input
command. Currently the driver only supports negative edge polarity for
this signal.

Add support to allow the user to select positive edge polarity using
the CR_INVERT flag.

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>
drivers/staging/comedi/drivers/das1800.c diff | blob | history
Domain: System / Kernel;