From ee1452d7458451a7508e0663553ce88d63958157 Mon Sep 17 00:00:00 2001
From: Jani Nikula <jani.nikula@intel.com>
Date: Fri, 20 Sep 2013 15:05:30 +0300
Subject: [PATCH] drm/i915: assume all GM45 Acer laptops use inverted backlight
 PWM

There is plenty of evidence suggesting all of the GM45 based Acer
laptops (including their eMachines and Packard Bell brands) use inverted
backlight PWM. Assume this is really the case, and quirk them all.

The old bugs that were fixed by subsystem device specific quirks:
 * https://bugs.freedesktop.org/show_bug.cgi?id=59628
 * https://bugzilla.kernel.org/show_bug.cgi?id=31522#c35
 * https://bugs.freedesktop.org/show_bug.cgi?id=44156
 * https://bugzilla.kernel.org/show_bug.cgi?id=53881

See also this bug and the plethora of duplicates:
 * https://bugs.launchpad.net/ubuntu/+source/linux/+bug/765438

References: https://bugzilla.kernel.org/show_bug.cgi?id=54171
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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