ASLE_PFMB_BRIGHTNESS_VALID  140 drivers/gpu/drm/gma500/opregion.c #define ASLE_PFMB_BRIGHTNESS_VALID (1<<8)
ASLE_PFMB_BRIGHTNESS_VALID  185 drivers/gpu/drm/i915/display/intel_opregion.c #define ASLE_PFMB_BRIGHTNESS_VALID (1<<8)