DP_AUX_CH_CTL_SEND_BUSY 1455 drivers/gpu/drm/gma500/psb_intel_reg.h #define   DP_AUX_CH_CTL_SEND_BUSY	    (1 << 31)
DP_AUX_CH_CTL_SEND_BUSY 5540 drivers/gpu/drm/i915/i915_reg.h #define   DP_AUX_CH_CTL_SEND_BUSY	    (1 << 31)