ASLE_PFMB_BRIGHTNESS_MASK  139 drivers/gpu/drm/gma500/opregion.c #define ASLE_PFMB_BRIGHTNESS_MASK (0xff)
ASLE_PFMB_BRIGHTNESS_MASK  184 drivers/gpu/drm/i915/display/intel_opregion.c #define ASLE_PFMB_BRIGHTNESS_MASK (0xff)