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From 497ae2b9041949bbc5b6e239bbcabed6be93f6c3 Mon Sep 17 00:00:00 2001
From: Anthony Koo <Anthony.Koo@amd.com>
Date: Tue, 8 May 2018 17:08:57 -0400
Subject: [PATCH 4535/5725] 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>
---
drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
index 163c887..0acc14f 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
@@ -2280,6 +2280,7 @@ 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 };
@@ -2369,6 +2370,17 @@ 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: ");
--
2.7.4
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