From: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Tue, 24 Apr 2012 14:00:21 +0000 (+0200)
Subject: drm/i915: implement Disable4x2SubspanOptimization w/a for ivb, too
X-Git-Tag: v3.5-rc1~83^2~8^2~74
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=97e1930f09e9b656e823cd841cf29bfbbe326832;p=pandora-kernel.git

drm/i915: implement Disable4x2SubspanOptimization w/a for ivb, too

Copy&pasted from the vlv setup code. According to docs, we need that
on ivb, too.

v2: Use new masked bit handling macros.

Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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