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

Signed-off-by: Anthony Koo <Anthony.Koo@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Anthony Koo 2018-05-08 17:08:57 -04:00 committed by Alex Deucher
parent 0f6ca3bac4
commit 8ca8090085
1 changed files with 12 additions and 0 deletions
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12
drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
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@ -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: ");