ST_MAINLINK_READY
if (hpd_state != ST_DISPLAY_OFF && hpd_state != ST_MAINLINK_READY) {
dp->hpd_state = ST_MAINLINK_READY;
if (state == ST_MAINLINK_READY || state == ST_CONNECTED) {
dp->hpd_state = ST_MAINLINK_READY;
} else if (state == ST_MAINLINK_READY) {
if (state == ST_MAINLINK_READY || state == ST_DISCONNECT_PENDING) {