drm/amd/display: Save hpd_src for dc_link

Signed-off-by: Zeyu Fan <Zeyu.Fan@amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/core/dc_link.c

@@ -987,6 +987,9 @@ static bool construct(
 	enc_init_data.connector = link->link_id;
 	enc_init_data.channel = get_ddc_line(link);
 	enc_init_data.hpd_source = get_hpd_line(link);
+
+	link->public.hpd_src = enc_init_data.hpd_source;
+
 	enc_init_data.transmitter =
 			translate_encoder_to_transmitter(enc_init_data.encoder);
 	link->link_enc = link->dc->res_pool->funcs->link_enc_create(

drivers/gpu/drm/amd/display/dc/dc.h

@@ -658,6 +658,9 @@ struct dc_link {
 	struct dc_lane_settings cur_lane_setting;
 
 	uint8_t ddc_hw_inst;
+
+	uint8_t hpd_src;
+
 	uint8_t link_enc_hw_inst;
 
 	bool test_pattern_enabled;