PIPECONF_INTERLACE_MASK 5646 drivers/gpu/drm/i915/i915_reg.h #define   PIPECONF_INTERLACE_MASK	(7 << 21)
PIPECONF_INTERLACE_MASK  297 drivers/video/fbdev/intelfb/intelfbhw.h #define PIPECONF_INTERLACE_MASK			(7 << 21)