INTEL_DP_AUX_CTL_BUSY
while ((read32(channelControl) & INTEL_DP_AUX_CTL_BUSY) != 0) {
sendControl = INTEL_DP_AUX_CTL_BUSY | INTEL_DP_AUX_CTL_DONE | INTEL_DP_AUX_CTL_INTERRUPT
sendControl = INTEL_DP_AUX_CTL_BUSY | INTEL_DP_AUX_CTL_DONE | INTEL_DP_AUX_CTL_INTERRUPT
status = wait_for_clear_status(channelControl, INTEL_DP_AUX_CTL_BUSY, 10000);
if ((status & INTEL_DP_AUX_CTL_BUSY) != 0) {