PIPE_FRAME_HIGH_MASK  591 drivers/gpu/drm/gma500/psb_intel_reg.h #define PIPE_FRAME_HIGH_MASK	0x0000ffff
PIPE_FRAME_HIGH_MASK 6144 drivers/gpu/drm/i915/i915_reg.h #define   PIPE_FRAME_HIGH_MASK    0x0000ffff