From 30456ffa65469d1d2e5e1da05017e6728d24c11c Mon Sep 17 00:00:00 2001 From: Meenakshikumar Somasundaram Date: Mon, 11 Jul 2022 18:37:41 -0400 Subject: [PATCH] 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: Jimmy Kizito Reviewed-by: Jun Lei Acked-by: Tom Chung Signed-off-by: Meenakshikumar Somasundaram Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/core/dc.c | 1 + drivers/gpu/drm/amd/display/dc/dc_link.h | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c index ce8910a..663be10 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -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__); } /** diff --git a/drivers/gpu/drm/amd/display/dc/dc_link.h b/drivers/gpu/drm/amd/display/dc/dc_link.h index a0af0f6..9544abf 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_link.h +++ b/drivers/gpu/drm/amd/display/dc/dc_link.h @@ -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); -- 2.7.4