staging: comedi: pcl726: add support for the external interrupt signal
authorH Hartley Sweeten <hsweeten@visionengravers.com>
Wed, 25 Sep 2013 22:41:40 +0000 (15:41 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 26 Sep 2013 16:32:20 +0000 (09:32 -0700)
The ACL-6126 board supports an external interrupt signal on pin 17 of
its I/O connector (CN3). Add a new subdevice to this driver to support
asynchronous commands with this input.

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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