staging: comedi: das1800: allow setting the external trigger polarity

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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>

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H Hartley Sweeten 2016-04-08 12:42:05 -07:00 • committed by Greg Kroah-Hartman

parent a2706b0943

commit a6b7dbb2be

1 changed files with 15 additions and 1 deletions

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drivers/staging/comedi/drivers/das1800.c

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