65 	struct drm_dp_aux *aux = &nv_connector->aux;  in nouveau_dp_probe_dpcd()  local
78 	    !drm_dp_read_dpcd_caps(aux, dpcd) &&  in nouveau_dp_probe_dpcd()
79 	    !drm_dp_read_lttpr_common_caps(aux, dpcd, outp->dp.lttpr.caps)) {  in nouveau_dp_probe_dpcd()
82 		if (!drm_dp_lttpr_init(aux, nr))  in nouveau_dp_probe_dpcd()
86 	ret = drm_dp_read_dpcd_caps(aux, dpcd);  in nouveau_dp_probe_dpcd()
104 		ret = drm_dp_dpcd_read(aux, DP_SUPPORTED_LINK_RATES, rates, sizeof(rates));  in nouveau_dp_probe_dpcd()
164 	ret = drm_dp_read_desc(aux, &outp->dp.desc, drm_dp_is_branch(dpcd));  in nouveau_dp_probe_dpcd()
171 			mstm->can_mst = drm_dp_read_mst_cap(aux, dpcd) == DRM_DP_MST;  in nouveau_dp_probe_dpcd()
175 		ret = drm_dp_read_sink_count(aux);  in nouveau_dp_probe_dpcd()
189 	ret = drm_dp_read_downstream_info(aux, dpcd,  in nouveau_dp_probe_dpcd()
225 	// Ensure that the aux bus is enabled for probing  in nouveau_dp_detect()
226 	drm_dp_dpcd_set_powered(&nv_connector->aux, true);  in nouveau_dp_detect()
289 	/* GSP doesn't like when we try to do aux transactions on a port it considers disconnected,  in nouveau_dp_detect()
290 	 * and since we don't really have a usecase for that anyway - just disable the aux bus here  in nouveau_dp_detect()
294 		drm_dp_dpcd_set_powered(&nv_connector->aux, false);  in nouveau_dp_detect()
303 	struct drm_dp_aux *aux = &outp->conn->aux;  in nouveau_dp_power_down()  local
309 	ret = drm_dp_dpcd_readb(aux, DP_SET_POWER, &pwr);  in nouveau_dp_power_down()
313 		drm_dp_dpcd_writeb(aux, DP_SET_POWER, pwr);  in nouveau_dp_power_down()
323 	struct drm_dp_aux *aux = &outp->conn->aux;  in nouveau_dp_train_link()  local
347 		ret = drm_dp_dpcd_read_phy_link_status(aux, DP_PHY_DPRX, stat);  in nouveau_dp_train_link()
364 			ret = drm_dp_dpcd_read_phy_link_status(aux, DP_PHY_DPRX, stat);  in nouveau_dp_train_link()
392 		if (drm_dp_dpcd_readb(aux, DP_LANE_COUNT_SET, &tmp) == 1) {  in nouveau_dp_train_link()
394 			drm_dp_dpcd_writeb(aux, DP_LANE_COUNT_SET, tmp);  in nouveau_dp_train_link()
408 	struct drm_dp_aux *aux = &outp->conn->aux;  in nouveau_dp_train()  local
423 	if (drm_dp_dpcd_readb(aux, DP_SET_POWER, &pwr) == 1) {  in nouveau_dp_train()
427 			drm_dp_dpcd_writeb(aux, DP_SET_POWER, pwr);  in nouveau_dp_train()
457 	if (drm_dp_dpcd_read_phy_link_status(&outp->conn->aux, DP_PHY_DPRX, link_status) < 0)  in nouveau_dp_link_check_locked()
506 		drm_dp_cec_irq(&nv_connector->aux);  in nouveau_dp_irq()
509 			ret = drm_dp_read_sink_count(&nv_connector->aux);  in nouveau_dp_irq()