161  * @aux: DisplayPort AUX channel
170 int drm_dp_link_probe(struct drm_dp_aux *aux, struct drm_dp_link *link)  in drm_dp_link_probe()  argument
178 	err = drm_dp_dpcd_read(aux, DP_DPCD_REV, dpcd, sizeof(dpcd));  in drm_dp_link_probe()
194 		err = drm_dp_dpcd_readb(aux, DP_EDP_DPCD_REV, &value);  in drm_dp_link_probe()
205 	 * The DPCD stores the AUX read interval in units of 4 ms. There are  in drm_dp_link_probe()
209 	 *      and channel equalization should use 100 us or 400 us AUX read  in drm_dp_link_probe()
213 	 *      AUX read intervals  in drm_dp_link_probe()
219 		DRM_DEBUG_KMS("AUX interval %u out of range (max. 4)\n",  in drm_dp_link_probe()
241 		err = drm_dp_dpcd_read(aux, DP_SUPPORTED_LINK_RATES,  in drm_dp_link_probe()
260  * @aux: DisplayPort AUX channel
265 int drm_dp_link_power_up(struct drm_dp_aux *aux, struct drm_dp_link *link)  in drm_dp_link_power_up()  argument
274 	err = drm_dp_dpcd_readb(aux, DP_SET_POWER, &value);  in drm_dp_link_power_up()
281 	err = drm_dp_dpcd_writeb(aux, DP_SET_POWER, value);  in drm_dp_link_power_up()
297  * @aux: DisplayPort AUX channel
302 int drm_dp_link_power_down(struct drm_dp_aux *aux, struct drm_dp_link *link)  in drm_dp_link_power_down()  argument
311 	err = drm_dp_dpcd_readb(aux, DP_SET_POWER, &value);  in drm_dp_link_power_down()
318 	err = drm_dp_dpcd_writeb(aux, DP_SET_POWER, value);  in drm_dp_link_power_down()
327  * @aux: DisplayPort AUX channel
332 int drm_dp_link_configure(struct drm_dp_aux *aux, struct drm_dp_link *link)  in drm_dp_link_configure()  argument
351 	err = drm_dp_dpcd_write(aux, DP_LINK_BW_SET, values, sizeof(values));  in drm_dp_link_configure()
360 	err = drm_dp_dpcd_writeb(aux, DP_MAIN_LINK_CHANNEL_CODING_SET, value);  in drm_dp_link_configure()
365 		err = drm_dp_dpcd_writeb(aux, DP_EDP_CONFIGURATION_SET,  in drm_dp_link_configure()
470 	struct drm_dp_aux *aux = link->aux;  in drm_dp_link_apply_training()  local
489 	err = drm_dp_dpcd_write(aux, DP_TRAINING_LANE0_SET, values, lanes);  in drm_dp_link_apply_training()
502 		err = drm_dp_dpcd_write(aux, DP_TRAINING_LANE0_1_SET2, values,  in drm_dp_link_apply_training()
516 	err = drm_dp_dpcd_writeb(aux, DP_TRAINING_PATTERN_SET, pattern);  in drm_dp_link_apply_training()
555 	err = drm_dp_dpcd_read(link->aux, DP_ADJUST_REQUEST_POST_CURSOR2,  in drm_dp_link_get_adjustments()
606 	err = drm_dp_dpcd_read_link_status(link->aux, status);  in drm_dp_link_recover_clock()
646 	struct drm_dp_aux *aux = link->aux;  in drm_dp_link_equalize_channel()  local
656 	err = drm_dp_dpcd_read_link_status(aux, status);  in drm_dp_link_equalize_channel()
741 	err = drm_dp_link_configure(link->aux, link);  in drm_dp_link_train_full()
797 	err = drm_dp_link_configure(link->aux, link);  in drm_dp_link_train_fast()
824 	err = drm_dp_dpcd_read_link_status(link->aux, status);  in drm_dp_link_train_fast()
853  * If the sink supports fast link training (no AUX CH handshake) and valid