[PATCH v2 04/23] drm/amd/display: Support USB4 dynamic link encoder selection.

[Wayne Lin]

From: Jimmy Kizito <Jimmy.Kizito at amd.com>

[why & how]
Add codes for commit "f42ef862fb1f drm/amd/display: Add dynamic
link encoder selection" to support USB4 DP tunneling feature.

Reviewed-by: Jun Lei <Jun.Lei at amd.com>
Acked-by: Wayne Lin <Wayne.Lin at amd.com>
Acked-by: Nicholas Kazlauskas <nicholas.kazlauskas at amd.com>
Signed-off-by: Jimmy Kizito <Jimmy.Kizito at amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc_link.c | 2 ++
 drivers/gpu/drm/amd/display/dc/dc_types.h     | 1 +
 2 files changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
index 20b4819b73e4..66182b8c217b 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -1732,6 +1732,8 @@ static bool dc_link_construct_dpia(struct dc_link *link,
 		  init_params->connector_index,
 		  link->connector_signal);
 
+	link->ep_type = DISPLAY_ENDPOINT_USB4_DPIA;
+
 	/* TODO: Initialize link : funcs->link_init */
 
 	ddc_service_init_data.ctx = link->ctx;
diff --git a/drivers/gpu/drm/amd/display/dc/dc_types.h b/drivers/gpu/drm/amd/display/dc/dc_types.h
index 3c109c805447..15c353c389d8 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_types.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_types.h
@@ -955,6 +955,7 @@ enum dc_psr_version {
 /* Possible values of display_endpoint_id.endpoint */
 enum display_endpoint_type {
 	DISPLAY_ENDPOINT_PHY = 0, /* Physical connector. */
+	DISPLAY_ENDPOINT_USB4_DPIA, /* USB4 DisplayPort tunnel. */
 	DISPLAY_ENDPOINT_UNKNOWN = -1
 };
 
-- 
2.25.1