video: dw_hdmi: Add read_hpd hook

Add support for DW HDMI Read HPD status.

Signed-off-by: Jagan Teki <jagan@edgeble.ai>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>

drivers/video/dw_hdmi.c

@@ -946,6 +946,9 @@ int dw_hdmi_detect_hpd(struct dw_hdmi *hdmi)
 		return -ENODEV;
 	}
 
+	if (hdmi->ops && hdmi->ops->read_hpd)
+		hdmi->ops->read_hpd(hdmi, true);
+
 	return 0;
 }
 

include/dw_hdmi.h

@@ -538,6 +538,7 @@ struct dw_hdmi;
 
 struct dw_hdmi_phy_ops {
 	int (*phy_set)(struct dw_hdmi *hdmi, uint mpixelclock);
+	void (*read_hpd)(struct dw_hdmi *hdmi, bool hdp_status);
 };
 
 struct dw_hdmi {