DP_PRE_EMPHASIS_MASK 1402 drivers/gpu/drm/gma500/psb_intel_reg.h #define   DP_PRE_EMPHASIS_MASK		(7 << 22)
DP_PRE_EMPHASIS_MASK 5449 drivers/gpu/drm/i915/i915_reg.h #define   DP_PRE_EMPHASIS_MASK		(7 << 22)