From c386702d7771f21c5b8801cbe61f598d6a240b73 Mon Sep 17 00:00:00 2001
From: Nikola Cornij <nikola.cornij@amd.com>
Date: Fri, 21 Feb 2020 16:28:44 -0500
Subject: drm/amd/display: Add 'disable FEC for specific monitor'
Git-commit: 8151306be02ea4617a48789366f8e9de9cb9f7ca
Patch-mainline: v5.7-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322
 infrastructure to DC

Disabling FEC for specific monitors is sometimes required for debugging
while in the monitor bringup phase

Signed-off-by: Nikola Cornij <nikola.cornij@amd.com>
Reviewed-by: Alvin Lee <Alvin.Lee2@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/amd/display/dc/core/dc_link.c | 3 +++
 drivers/gpu/drm/amd/display/dc/dc_types.h     | 1 +
 2 files changed, 4 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 951b43dde4e5..a4680968c8f4 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -970,6 +970,9 @@ static bool dc_link_detect_helper(struct dc_link *link,
 			break;
 		}
 
+		if (link->local_sink->edid_caps.panel_patch.disable_fec)
+			link->ctx->dc->debug.disable_fec = true;
+
 		// Check if edid is the same
 		if ((prev_sink != NULL) && ((edid_status == EDID_THE_SAME) || (edid_status == EDID_OK)))
 			same_edid = is_same_edid(&prev_sink->dc_edid, &sink->dc_edid);
diff --git a/drivers/gpu/drm/amd/display/dc/dc_types.h b/drivers/gpu/drm/amd/display/dc/dc_types.h
index 299f6e00f576..0d210104ba0a 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_types.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_types.h
@@ -231,6 +231,7 @@ struct dc_panel_patch {
 	unsigned int extra_t7_ms;
 	unsigned int skip_scdc_overwrite;
 	unsigned int delay_ignore_msa;
+	unsigned int disable_fec;
 };
 
 struct dc_edid_caps {
-- 
2.28.0