Commit dfb3d47b authored Aug 21, 2014 by Scot Doyle Committed by Jani Nikula Aug 26, 2014

drm/i915: Ignore VBT backlight presence check on Acer C720 (4005U)



commit c675949e
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>

parent 52addcf9

drivers/gpu/drm/i915/intel_display.c

+3 −0

Original line number	Original line	Diff line number	Diff line
	@@ -12481,6 +12481,9 @@ static struct intel_quirk intel_quirks[] = {
	/* Acer C720 and C720P Chromebooks (Celeron 2955U) have backlights */		/* Acer C720 and C720P Chromebooks (Celeron 2955U) have backlights */
	{ 0x0a06, 0x1025, 0x0a11, quirk_backlight_present },		{ 0x0a06, 0x1025, 0x0a11, quirk_backlight_present },

			/* Acer C720 Chromebook (Core i3 4005U) */
			{ 0x0a16, 0x1025, 0x0a11, quirk_backlight_present },

	/* Toshiba CB35 Chromebook (Celeron 2955U) */		/* Toshiba CB35 Chromebook (Celeron 2955U) */
	{ 0x0a06, 0x1179, 0x0a88, quirk_backlight_present },		{ 0x0a06, 0x1179, 0x0a88, quirk_backlight_present },