From: Wei-Guang Li <wei-guang.li@amd.com>
Date: Wed, 6 May 2026 12:32:33 +0000 (+0800)
Subject: drm/amd/display: Add debug option for replay ESD recovery
X-Git-Url: http://git.ipfire.org/gitweb/?a=commitdiff_plain;h=775054e27e2e033b7544896eb526af7d196f1587;p=thirdparty%2Flinux.git

drm/amd/display: Add debug option for replay ESD recovery

[Why&How]
Add a new debug option "enable_replay_esd_recovery" to control whether
to enable the replay ESD recovery feature.

Reviewed-by: Robin Chen <robin.chen@amd.com>
Reviewed-by: Wenjing Liu <wenjing.liu@amd.com>
Signed-off-by: Wei-Guang Li <wei-guang.li@amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index d0b6fad65bc0..a356cf4faa1d 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -1220,6 +1220,7 @@ struct dc_debug_options {
 	bool enable_otg_frame_sync_pwa;
 	unsigned int min_deep_sleep_dcfclk_khz;
 	unsigned int force_odm2to1_for_edp_pixclk_mhz;
+	bool enable_replay_esd_recovery;
 };
 
 
diff --git a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_irq_handler.c b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_irq_handler.c
index f9e0ba24d401..54ce768ae6ad 100644
--- a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_irq_handler.c
+++ b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_irq_handler.c
@@ -312,12 +312,14 @@ static void handle_hpd_irq_replay_sink(struct dc_link *link, bool *need_re_enabl
 		}
 	}
 
-	if (!link->replay_settings.replay_allow_active &&
-	    replay_sink_status.bits.SINK_DEVICE_REPLAY_STATUS == 0x7) {
-	    /* If sink device replay status is 0x7 and replay is disabled,
-	     * it means sink is in a bad state and link retraining is needed to recover
-	     */
-	    *replay_esd_detection_needed = true;
+	if (link->ctx->dc->debug.enable_replay_esd_recovery) {
+		if (!link->replay_settings.replay_allow_active &&
+		    replay_sink_status.bits.SINK_DEVICE_REPLAY_STATUS == 0x7) {
+		    /* If sink device replay status is 0x7 and replay is disabled,
+		     * it means sink is in a bad state and link retraining is needed to recover
+		     */
+		    *replay_esd_detection_needed = true;
+		}
 	}
 }