From: Kamal Mostafa <kamal@canonical.com>
Date: Fri, 19 Jul 2013 22:02:01 +0000 (-0700)
Subject: drm/i915: quirk no PCH_PWM_ENABLE for Dell XPS13 backlight
X-Git-Tag: v3.11-rc3~23^2^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e85843bec6c2ea7c10ec61238396891cc2b753a9;p=pandora-kernel.git

drm/i915: quirk no PCH_PWM_ENABLE for Dell XPS13 backlight

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=47941
BugLink: https://bugs.launchpad.net/bugs/1163720
BugLink: https://bugs.launchpad.net/bugs/1162026

Some machines suffer from non-functional backlight controls if
BLM_PCH_PWM_ENABLE is set, so provide a quirk to avoid doing so.
Apply this quirk to Dell XPS 13 models.

Tested-by: Eric Griffith <EGriffith92@gmail.com>
Tested-by: Kent Baxley <kent.baxley@canonical.com>
Cc: <stable@vger.kernel.org> # v3.8+
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---

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