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Commit 2e93a1aa authored by Scot Doyle's avatar Scot Doyle Committed by Daniel Vetter
Browse files

drm/i915: Acer C720 and C720P have controllable backlights 

The Acer C720 and C720P Chromebooks (with Celeron 2955U CPU) have a
controllable backlight although their VBT reports otherwise. Apply quirk
to ignore the backlight presence check during backlight setup.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=79813


Tested-by: default avatarJames Duley <jagduley@gmail.com>
Tested-by: default avatarMichael Mullin <masmullin@gmail.com>
Signed-off-by: default avatarScot Doyle <lkml14@scotdoyle.com>
CC: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: default avatarJani Nikula <jani.nikula@intel.com>
Cc: stable@vger.kernel.org # 3.15 only
[danvet: Add cc: stable because the regressing commit is in 3.15.]
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 9c72cc6f

drivers/gpu/drm/i915/intel_display.c

+3 −0
Original line number Diff line number Diff line
@@ -11667,6 +11667,9 @@ static struct intel_quirk intel_quirks[] = { 


	/* Acer Aspire 5336 */

	{ 0x2a42, 0x1025, 0x048a, quirk_invert_brightness },



	/* Acer C720 and C720P Chromebooks (Celeron 2955U) have backlights */

	{ 0x0a06, 0x1025, 0x0a11, quirk_backlight_present },

};



static void intel_init_quirks(struct drm_device *dev)