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Commit 8ca80900 authored by Anthony Koo's avatar Anthony Koo Committed by Alex Deucher
Browse files

drm/amd/display: add DPCD read for Sink ieee OUI 



Signed-off-by: default avatarAnthony Koo <Anthony.Koo@amd.com>
Reviewed-by: default avatarAric Cyr <Aric.Cyr@amd.com>
Acked-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 0f6ca3ba

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

+12 −0
Original line number Diff line number Diff line
@@ -2305,6 +2305,7 @@ static bool retrieve_link_cap(struct dc_link *link) 
{

	uint8_t dpcd_data[DP_ADAPTER_CAP - DP_DPCD_REV + 1];



	struct dp_device_vendor_id sink_id;

	union down_stream_port_count down_strm_port_count;

	union edp_configuration_cap edp_config_cap;

	union dp_downstream_port_present ds_port = { 0 };
@@ -2391,6 +2392,17 @@ static bool retrieve_link_cap(struct dc_link *link) 
			&link->dpcd_caps.sink_count.raw,

			sizeof(link->dpcd_caps.sink_count.raw));



	/* read sink ieee oui */

	core_link_read_dpcd(link,

			DP_SINK_OUI,

			(uint8_t *)(&sink_id),

			sizeof(sink_id));



	link->dpcd_caps.sink_dev_id =

			(sink_id.ieee_oui[0] << 16) +

			(sink_id.ieee_oui[1] << 8) +

			(sink_id.ieee_oui[2]);



	/* Connectivity log: detection */

	CONN_DATA_DETECT(link, dpcd_data, sizeof(dpcd_data), "Rx Caps: ");