From: Alex Deucher <alexdeucher@gmail.com>
Date: Fri, 20 Aug 2010 15:57:19 +0000 (-0400)
Subject: drm/radeon/kms: try to detect tv vs monitor for underscan
X-Git-Tag: v2.6.36-rc3~46^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=039ed2d9a24b3c4e272439b1551762fcb77c188a;p=pandora-kernel.git

drm/radeon/kms: try to detect tv vs monitor for underscan

When enabling underscan for hdmi monitors, attempt to detect
whether we are driving a TV or a monitor.  The should hopefully
prevent underscan from being enabled on monitors attached via
hdmi that do not overscan the image.  Only enable underscan
if the mode is a common hdtv mode (480p, 720p, etc.).

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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