drm/udl: port over blanking code from udlfb.
authorDave Airlie <airlied@redhat.com>
Tue, 26 Jun 2012 13:53:07 +0000 (14:53 +0100)
committerDave Airlie <airlied@redhat.com>
Fri, 20 Jul 2012 02:30:41 +0000 (22:30 -0400)
This ports over the dpms code from udlfb, and should mean
a better chance of turning on some udl devices.

Signed-off-by: Dave Airlie <airlied@redhat.com>

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