tree 27e7e17dab67a95cc87bd1dd75049c83ea4915a7
parent 94a335dba34ff47cad3d6d0c29b452d43a1be3c8
author Kamal Mostafa <kamal@canonical.com> 1374271321 -0700
committer Daniel Vetter <daniel.vetter@ffwll.ch> 1374310373 +0200

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>