DP_AUX_CH_CTL_SYNC_TEST 1471 drivers/gpu/drm/gma500/psb_intel_reg.h #define   DP_AUX_CH_CTL_SYNC_TEST	    (1 << 13)
DP_AUX_CH_CTL_SYNC_TEST 5556 drivers/gpu/drm/i915/i915_reg.h #define   DP_AUX_CH_CTL_SYNC_TEST	    (1 << 13)