amdgpu-sleep-fix-dp.patch

Fixes sleep bug on AMD cards including DisplayPort ports.
Based on https://gitlab.freedesktop.org/drm/amd/-/issues/662#note_909333
Index: linux-source-5.10/drivers/gpu/drm/amd/display/dc/core/dc_link.c
===================================================================
--- linux-source-5.10.orig/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ linux-source-5.10/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -153,7 +153,7 @@ static bool program_hpd_filter(const str
 	case SIGNAL_TYPE_HDMI_TYPE_A:
 		/* Program hpd filter */
 		delay_on_connect_in_ms = 500;
-		delay_on_disconnect_in_ms = 100;
+		delay_on_disconnect_in_ms = 1200;
 		break;
 	case SIGNAL_TYPE_DISPLAY_PORT:
 	case SIGNAL_TYPE_DISPLAY_PORT_MST:
@@ -165,7 +165,7 @@ static bool program_hpd_filter(const str
 		 * also see intermittent i2c read issues.
 		 */
 		delay_on_connect_in_ms = 80;
-		delay_on_disconnect_in_ms = 0;
+		delay_on_disconnect_in_ms = 1200;
 		break;
 	case SIGNAL_TYPE_LVDS:
 	case SIGNAL_TYPE_EDP:
@@ -1573,7 +1573,8 @@ static bool dc_link_construct(struct dc_
 	 * If GPIO isn't programmed correctly HPD might not rise or drain
 	 * fast enough, leading to bounces.
 	 */
-	program_hpd_filter(link);
+	// program_hpd_filter(link);
+	dc_link_enable_hpd_filter(link, true);
 
 	link->psr_settings.psr_version = DC_PSR_VERSION_UNSUPPORTED;
 
@@ -2803,7 +2804,10 @@ const struct dc_link_status *dc_link_get
 void core_link_resume(struct dc_link *link)
 {
 	if (link->connector_signal != SIGNAL_TYPE_VIRTUAL)
-		program_hpd_filter(link);
+	{
+		// program_hpd_filter(link);
+		dc_link_enable_hpd_filter(link, true);
+	}
 }
 
 static struct fixed31_32 get_pbn_per_slot(struct dc_stream_state *stream)