From bcf53de4e60d9000b82f541d654529e2902a4c2c Mon Sep 17 00:00:00 2001
From: =?utf8?q?St=C3=A9phane=20Marchesin?= <marcheu@chromium.org>
Date: Fri, 12 Jul 2013 13:54:41 -0700
Subject: [PATCH] drm/i915: Preserve the DDI_A_4_LANES bit from the bios
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Otherwise the DDI_A_4_LANES bit gets lost and we can't use > 2 lanes
on eDP. This fixes eDP on hsw with > 2 lanes.

Also s/port_reversal/saved_port_bits/ since the current name is
confusing.

Signed-off-by: Stéphane Marchesin <marcheu@chromium.org>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
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