DISPPLANE_LINE_DOUBLE  642 drivers/gpu/drm/gma500/psb_intel_reg.h #define DISPPLANE_LINE_DOUBLE			(1 << 20)
DISPPLANE_LINE_DOUBLE 6245 drivers/gpu/drm/i915/i915_reg.h #define   DISPPLANE_LINE_DOUBLE			(1 << 20)
DISPPLANE_LINE_DOUBLE  409 drivers/video/fbdev/intelfb/intelfbhw.h #define DISPPLANE_LINE_DOUBLE		(1<<20)