From: Alex Deucher <alexander.deucher@amd.com>
Date: Thu, 26 Jul 2012 17:38:52 +0000 (-0400)
Subject: drm/radeon: properly handle crtc powergating
X-Git-Tag: v3.6-rc2~12^2^2~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6c0ae2ab85fc4a95cae82047a7db1f688a7737ab;p=pandora-kernel.git

drm/radeon: properly handle crtc powergating

Need to make sure the crtc is gated on before modesetting.
Explicitly gate the crtc on in prepare() and set a flag
so that the dpms functions don't gate it off during
mode set.

Noticed by sylware on IRC.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
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