From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Tue, 5 May 2015 14:06:21 +0000 (+0300)
Subject: drm/i915: Enable default_phase in GCP when possible
X-Git-Tag: omap-for-v4.3/fixes-rc1~89^2~36^2~304
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=12aa32905df59a32a6fb770830799058bf591eed;p=pandora-kernel.git

drm/i915: Enable default_phase in GCP when possible

When the video timings are suitably aligned so that all different
periods start at phase 0 (ie. none of the periods start mid-pixel)
we can inform the sink about this. Supposedly the sink can then
optimize certain things. Obviously this is only relevant when
outputting >8bpc data since otherwise there are no mid-pixel phases.

v2: Rebased due to crtc->config changes

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chandra Konduru <Chandra.konduru@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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