drm/i915: Ignore VBT backlight presence check on Acer C720 (4005U)
authorScot Doyle <lkml14@scotdoyle.com>
Thu, 21 Aug 2014 16:08:02 +0000 (16:08 +0000)
committerJani Nikula <jani.nikula@intel.com>
Tue, 26 Aug 2014 11:55:10 +0000 (14:55 +0300)
commit c675949ec58ca50d5a3ae3c757892f1560f6e896
Author: Jani Nikula <jani.nikula@intel.com>
Date:   Wed Apr 9 11:31:37 2014 +0300

    drm/i915: do not setup backlight if not available according to VBT

prevents backlight setup on the Acer C720 (Core i3 4005U CPU), which has a
misconfigured VBT. Apply quirk to ignore the VBT backlight presence check
during backlight setup.

Signed-off-by: Scot Doyle <lkml14@scotdoyle.com>
Tested-by: Tyler Cleveland <siralucardt@openmailbox.org>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@vger.kernel.org (3.15+)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
drivers/gpu/drm/i915/intel_display.c

index d074d70..625f29d 100644 (file)
@@ -12481,6 +12481,9 @@ static struct intel_quirk intel_quirks[] = {
        /* Acer C720 and C720P Chromebooks (Celeron 2955U) have backlights */
        { 0x0a06, 0x1025, 0x0a11, quirk_backlight_present },
 
+       /* Acer C720 Chromebook (Core i3 4005U) */
+       { 0x0a16, 0x1025, 0x0a11, quirk_backlight_present },
+
        /* Toshiba CB35 Chromebook (Celeron 2955U) */
        { 0x0a06, 0x1179, 0x0a88, quirk_backlight_present },