drm/bridge: synopsys: dw-hdmi-qp: Clear edid property when hdmi plug out

Algea Cao · rkhuangtao · commit f1c83fae2ee8 · 2025-04-11T09:57:03.000Z
If edid property is not cleared when hdmi plug out, edid value
maybe keep previous sink's when the hdmi is connected to another
sink.

Change-Id: I8d06de17040573de4ef4706183bd7b46c4002ae4
Signed-off-by: Algea Cao &lt;algea.cao@rock-chips.com&gt;
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c
@@ -2650,6 +2650,8 @@ dw_hdmi_connector_detect(struct drm_connector *connector, bool force)
 		extcon_set_state_sync(hdmi->extcon, EXTCON_DISP_HDMI, true);
 		handle_plugged_change(hdmi, true);
 	} else {
+		if (!hdmi->next_bridge)
+			drm_connector_update_edid_property(&hdmi->connector, NULL);
 		extcon_set_state_sync(hdmi->extcon, EXTCON_DISP_HDMI, false);
 		handle_plugged_change(hdmi, false);
 	}

Original file line number	Diff line number	Diff line change
`@@ -2650,6 +2650,8 @@ dw_hdmi_connector_detect(struct drm_connector *connector, bool force)`
`2650`	`2650`	`extcon_set_state_sync(hdmi->extcon, EXTCON_DISP_HDMI, true);`
`2651`	`2651`	`handle_plugged_change(hdmi, true);`
`2652`	`2652`	`} else {`
	`2653`	`+ if (!hdmi->next_bridge)`
	`2654`	`+ drm_connector_update_edid_property(&hdmi->connector, NULL);`
`2653`	`2655`	`extcon_set_state_sync(hdmi->extcon, EXTCON_DISP_HDMI, false);`
`2654`	`2656`	`handle_plugged_change(hdmi, false);`
`2655`	`2657`	`}`