DP_AUX_CH_CTL_PRECHARGE_TEST 1473 drivers/gpu/drm/gma500/psb_intel_reg.h #define   DP_AUX_CH_CTL_PRECHARGE_TEST	    (1 << 11)
DP_AUX_CH_CTL_PRECHARGE_TEST 5558 drivers/gpu/drm/i915/i915_reg.h #define   DP_AUX_CH_CTL_PRECHARGE_TEST	    (1 << 11)