42 	int ret;  in exynos_dp_init_dp()  local
48 	ret = exynos_dp_init_analog_func(regs);  in exynos_dp_init_dp()
49 	if (ret != EXYNOS_DP_SUCCESS)  in exynos_dp_init_dp()
50 		return ret;  in exynos_dp_init_dp()
55 	return ret;  in exynos_dp_init_dp()
172 	unsigned int ret;  in exynos_dp_handle_edid()  local
187 		ret = exynos_dp_read_bytes_from_dpcd(regs, DPCD_DPCD_REV, 12,  in exynos_dp_handle_edid()
189 		if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_handle_edid()
192 				return ret;  in exynos_dp_handle_edid()
236 	ret = exynos_dp_read_edid(regs);  in exynos_dp_handle_edid()
237 	if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_handle_edid()
242 	return ret;  in exynos_dp_handle_edid()
261 	unsigned int ret = 0;  in exynos_dp_link_start()  local
273 	ret = exynos_dp_write_byte_to_dpcd(regs, DPCD_SINK_POWER_STATE,  in exynos_dp_link_start()
275 	if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_link_start()
277 		return ret;  in exynos_dp_link_start()
288 	ret = exynos_dp_write_bytes_to_dpcd(regs, DPCD_LINK_BW_SET, 2, buf);  in exynos_dp_link_start()
289 	if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_link_start()
291 		return ret;  in exynos_dp_link_start()
312 	ret = exynos_dp_write_bytes_to_dpcd(regs, DPCD_TRAINING_PATTERN_SET,  in exynos_dp_link_start()
314 	if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_link_start()
316 		return ret;  in exynos_dp_link_start()
319 	return ret;  in exynos_dp_link_start()
324 	unsigned int ret = EXYNOS_DP_SUCCESS;  in exynos_dp_training_pattern_dis()  local
328 	ret = exynos_dp_write_byte_to_dpcd(regs, DPCD_TRAINING_PATTERN_SET,  in exynos_dp_training_pattern_dis()
330 	if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_training_pattern_dis()
335 	return ret;  in exynos_dp_training_pattern_dis()
342 	unsigned int ret = EXYNOS_DP_SUCCESS;  in exynos_dp_enable_rx_to_enhanced_mode()  local
344 	ret = exynos_dp_read_byte_from_dpcd(regs, DPCD_LANE_COUNT_SET,  in exynos_dp_enable_rx_to_enhanced_mode()
346 	if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_enable_rx_to_enhanced_mode()
356 	ret = exynos_dp_write_byte_to_dpcd(regs, DPCD_LANE_COUNT_SET, data);  in exynos_dp_enable_rx_to_enhanced_mode()
357 	if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_enable_rx_to_enhanced_mode()
363 	return ret;  in exynos_dp_enable_rx_to_enhanced_mode()
369 	unsigned int ret = EXYNOS_DP_SUCCESS;  in exynos_dp_set_enhanced_mode()  local
371 	ret = exynos_dp_enable_rx_to_enhanced_mode(regs, enhance_mode);  in exynos_dp_set_enhanced_mode()
372 	if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_set_enhanced_mode()
379 	return ret;  in exynos_dp_set_enhanced_mode()
386 	unsigned int ret, i;  in exynos_dp_read_dpcd_lane_stat()  local
396 	ret = exynos_dp_read_bytes_from_dpcd(regs, DPCD_LANE0_1_STATUS, 2,  in exynos_dp_read_dpcd_lane_stat()
398 	if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_read_dpcd_lane_stat()
400 		return ret;  in exynos_dp_read_dpcd_lane_stat()
413 	return ret;  in exynos_dp_read_dpcd_lane_stat()
419 	unsigned int ret = EXYNOS_DP_SUCCESS;  in exynos_dp_read_dpcd_adj_req()  local
427 	ret = exynos_dp_read_byte_from_dpcd(regs, dpcd_addr, &buf);  in exynos_dp_read_dpcd_adj_req()
428 	if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_read_dpcd_adj_req()
436 	return ret;  in exynos_dp_read_dpcd_adj_req()
442 	int ret;  in exynos_dp_equalizer_err_link()  local
444 	ret = exynos_dp_training_pattern_dis(regs);  in exynos_dp_equalizer_err_link()
445 	if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_equalizer_err_link()
450 	ret = exynos_dp_set_enhanced_mode(regs, priv->dpcd_efc);  in exynos_dp_equalizer_err_link()
451 	if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_equalizer_err_link()
456 	return ret;  in exynos_dp_equalizer_err_link()
462 	int ret;  in exynos_dp_reduce_link_rate()  local
468 		ret = EXYNOS_DP_SUCCESS;  in exynos_dp_reduce_link_rate()
470 		ret = exynos_dp_training_pattern_dis(regs);  in exynos_dp_reduce_link_rate()
471 		if (ret != EXYNOS_DP_SUCCESS)  in exynos_dp_reduce_link_rate()
474 		ret = exynos_dp_set_enhanced_mode(regs, priv->dpcd_efc);  in exynos_dp_reduce_link_rate()
475 		if (ret != EXYNOS_DP_SUCCESS)  in exynos_dp_reduce_link_rate()
481 	return ret;  in exynos_dp_reduce_link_rate()
487 	unsigned int ret = EXYNOS_DP_SUCCESS;  in exynos_dp_process_clock_recovery()  local
498 	ret = exynos_dp_read_dpcd_lane_stat(regs, priv, &lane_stat);  in exynos_dp_process_clock_recovery()
499 	if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_process_clock_recovery()
502 			return ret;  in exynos_dp_process_clock_recovery()
510 			ret = exynos_dp_read_dpcd_adj_req(regs, i,  in exynos_dp_process_clock_recovery()
512 			if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_process_clock_recovery()
514 				return ret;  in exynos_dp_process_clock_recovery()
535 		ret = exynos_dp_write_bytes_to_dpcd(regs,  in exynos_dp_process_clock_recovery()
537 		if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_process_clock_recovery()
540 			return ret;  in exynos_dp_process_clock_recovery()
547 				ret = exynos_dp_read_dpcd_adj_req(regs, i,  in exynos_dp_process_clock_recovery()
549 			if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_process_clock_recovery()
552 				return ret;  in exynos_dp_process_clock_recovery()
557 				ret = exynos_dp_reduce_link_rate(regs,  in exynos_dp_process_clock_recovery()
566 					ret = exynos_dp_reduce_link_rate(  in exynos_dp_process_clock_recovery()
582 		ret = exynos_dp_write_bytes_to_dpcd(regs,  in exynos_dp_process_clock_recovery()
584 		if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_process_clock_recovery()
587 			return ret;  in exynos_dp_process_clock_recovery()
591 	return ret;  in exynos_dp_process_clock_recovery()
597 	unsigned int ret = EXYNOS_DP_SUCCESS;  in exynos_dp_process_equalizer_training()  local
607 	ret = exynos_dp_read_dpcd_lane_stat(regs, priv, &lane_stat);  in exynos_dp_process_equalizer_training()
608 	if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_process_equalizer_training()
611 		return ret;  in exynos_dp_process_equalizer_training()
617 		ret = exynos_dp_read_byte_from_dpcd(regs,  in exynos_dp_process_equalizer_training()
620 		if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_process_equalizer_training()
623 			return ret;  in exynos_dp_process_equalizer_training()
629 			ret = exynos_dp_read_dpcd_adj_req(regs, i,  in exynos_dp_process_equalizer_training()
631 			if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_process_equalizer_training()
635 				return ret;  in exynos_dp_process_equalizer_training()
668 					ret = exynos_dp_reduce_link_rate(  in exynos_dp_process_equalizer_training()
681 				ret = exynos_dp_write_bytes_to_dpcd(regs,  in exynos_dp_process_equalizer_training()
684 				if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_process_equalizer_training()
694 		ret = exynos_dp_reduce_link_rate(regs, priv);  in exynos_dp_process_equalizer_training()
700 	return ret;  in exynos_dp_process_equalizer_training()
706 	unsigned int ret = 0;  in exynos_dp_sw_link_training()  local
721 			ret = exynos_dp_link_start(regs, priv);  in exynos_dp_sw_link_training()
722 			if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_sw_link_training()
724 				return ret;  in exynos_dp_sw_link_training()
728 			ret = exynos_dp_process_clock_recovery(regs,  in exynos_dp_sw_link_training()
730 			if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_sw_link_training()
732 				return ret;  in exynos_dp_sw_link_training()
736 			ret = exynos_dp_process_equalizer_training(regs,  in exynos_dp_sw_link_training()
738 			if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_sw_link_training()
740 				return ret;  in exynos_dp_sw_link_training()
751 	return ret;  in exynos_dp_sw_link_training()
757 	unsigned int ret;  in exynos_dp_set_link_train()  local
761 	ret = exynos_dp_sw_link_training(regs, priv);  in exynos_dp_set_link_train()
762 	if (ret != EXYNOS_DP_SUCCESS)  in exynos_dp_set_link_train()
765 	return ret;  in exynos_dp_set_link_train()
792 	unsigned int ret = 0;  in exynos_dp_config_video()  local
813 	ret = exynos_dp_get_pll_lock_status(regs);  in exynos_dp_config_video()
814 	if (ret != PLL_LOCKED) {  in exynos_dp_config_video()
822 			ret = exynos_dp_is_slave_video_stream_clock_on(regs);  in exynos_dp_config_video()
823 			if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_config_video()
826 					return ret;  in exynos_dp_config_video()
863 			ret = exynos_dp_is_video_stream_on(regs);  in exynos_dp_config_video()
864 			if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_config_video()
867 					return ret;  in exynos_dp_config_video()
876 	return ret;  in exynos_dp_config_video()
941 	int ret;  in exynos_dp_bridge_init()  local
944 	ret = video_bridge_attach(dev);  in exynos_dp_bridge_init()
945 	if (ret) {  in exynos_dp_bridge_init()
946 		debug("video bridge init failed: %d\n", ret);  in exynos_dp_bridge_init()
947 		return ret;  in exynos_dp_bridge_init()
961 		ret = video_bridge_check_attached(dev);  in exynos_dp_bridge_init()
962 		if (!ret || ret == -ENOENT)  in exynos_dp_bridge_init()
978 	int ret;  in exynos_dp_bridge_setup()  local
981 	ret = uclass_get_device(UCLASS_VIDEO_BRIDGE, 0, &dev);  in exynos_dp_bridge_setup()
982 	if (ret) {  in exynos_dp_bridge_setup()
983 		debug("video bridge init failed: %d\n", ret);  in exynos_dp_bridge_setup()
984 		return ret;  in exynos_dp_bridge_setup()
993 		ret = exynos_dp_bridge_init(dev);  in exynos_dp_bridge_setup()
994 		if (!ret)  in exynos_dp_bridge_setup()
1012 	return ret;  in exynos_dp_bridge_setup()
1019 	unsigned int ret;  in exynos_dp_enable()  local
1024 	ret = exynos_dp_bridge_setup(gd->fdt_blob);  in exynos_dp_enable()
1025 	if (ret && ret != -ENODEV)  in exynos_dp_enable()
1026 		printf("LCD bridge failed to enable: %d\n", ret);  in exynos_dp_enable()
1030 	ret = exynos_dp_init_dp(regs);  in exynos_dp_enable()
1031 	if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_enable()
1033 		return ret;  in exynos_dp_enable()
1036 	ret = exynos_dp_handle_edid(regs, priv);  in exynos_dp_enable()
1037 	if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_enable()
1039 		return ret;  in exynos_dp_enable()
1042 	ret = exynos_dp_set_link_train(regs, priv);  in exynos_dp_enable()
1043 	if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_enable()
1045 		return ret;  in exynos_dp_enable()
1056 	ret = exynos_dp_config_video(regs, priv);  in exynos_dp_enable()
1057 	if (ret != EXYNOS_DP_SUCCESS) {  in exynos_dp_enable()
1059 		return ret;  in exynos_dp_enable()
1064 	return ret;  in exynos_dp_enable()