Commit 30456ffa authored by Meenakshikumar Somasundaram's avatar Meenakshikumar Somasundaram Committed by Alex Deucher
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drm/amd/display: Fix TDR eDP and USB4 display light up issue 



[Why]
After TDR recovery, eDP and USB4 display does not light up. Because
dmub outbox notifications are not enabled after dmub reload and link
encoder assignments for the streams are not cleared before dc state
reset.

[How]
- Dmub outbox notification is enabled after tdr recovery by issuing
  inbox command to dmub.
- Link encoders for the streams are unassigned before dc state reset.

Reviewed-by: default avatarJimmy Kizito <Jimmy.Kizito@amd.com>
Reviewed-by: default avatarJun Lei <Jun.Lei@amd.com>
Acked-by: default avatarTom Chung <chiahsuan.chung@amd.com>
Signed-off-by: default avatarMeenakshikumar Somasundaram <meenakshikumar.somasundaram@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent b2a93490

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

+1 −0
Original line number Diff line number Diff line
@@ -4337,6 +4337,7 @@ void dc_enable_dmub_outbox(struct dc *dc) 
	struct dc_context *dc_ctx = dc->ctx;



	dmub_enable_outbox_notification(dc_ctx->dmub_srv);

	DC_LOG_DC("%s: dmub outbox notifications enabled\n", __func__);

}



/**

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

+1 −0
Original line number Diff line number Diff line
@@ -344,6 +344,7 @@ enum dc_detect_reason { 
	DETECT_REASON_HPDRX,

	DETECT_REASON_FALLBACK,

	DETECT_REASON_RETRAIN,

	DETECT_REASON_TDR,

};



bool dc_link_detect(struct dc_link *dc_link, enum dc_detect_reason reason);