CRT_HOTPLUG_DETECT_VOLTAGE_475MV  388 drivers/gpu/drm/gma500/psb_intel_reg.h #define CRT_HOTPLUG_DETECT_VOLTAGE_475MV	(1 << 2)
CRT_HOTPLUG_DETECT_VOLTAGE_475MV 4418 drivers/gpu/drm/i915/i915_reg.h #define CRT_HOTPLUG_DETECT_VOLTAGE_475MV	(1 << 2)