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: James Duley <jagdu...@gmail.com>
Tested-by: Michael Mullin <masmul...@gmail.com>
Signed-off-by: Scot Doyle <lkm...@scotdoyle.com>
CC: Jani Nikula <jani.nik...@intel.com>
---
diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index 7b5f193..18089bf 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -12391,6 +12391,9 @@ 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)
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