DP_VOLTAGE_0_4   1388 drivers/gpu/drm/gma500/psb_intel_reg.h #define   DP_VOLTAGE_0_4		(0 << 25)
DP_VOLTAGE_0_4   5435 drivers/gpu/drm/i915/i915_reg.h #define   DP_VOLTAGE_0_4		(0 << 25)