PANEL_UNLOCK_MASK  171 drivers/gpu/drm/gma500/psb_intel_reg.h #define	PANEL_UNLOCK_MASK		(0xffff << 16)
PANEL_UNLOCK_MASK 4747 drivers/gpu/drm/i915/i915_reg.h #define  PANEL_UNLOCK_MASK		REG_GENMASK(31, 16)