DP_PORT_WIDTH_MASK 1409 drivers/gpu/drm/gma500/psb_intel_reg.h #define   DP_PORT_WIDTH_MASK		(7 << 19)
DP_PORT_WIDTH_MASK 5454 drivers/gpu/drm/i915/i915_reg.h #define   DP_PORT_WIDTH_MASK		(7 << 19)