drm/i915: Add HDMI support on IGDNG

Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 2cd6ba6..53cf6ef 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2432,7 +2432,22 @@
 		intel_lvds_init(dev);
 
 	if (IS_IGDNG(dev)) {
-		/* ignore for other outputs */
+		int found;
+
+		if (I915_READ(HDMIB) & PORT_DETECTED) {
+			/* check SDVOB */
+			/* found = intel_sdvo_init(dev, HDMIB); */
+			found = 0;
+			if (!found)
+				intel_hdmi_init(dev, HDMIB);
+		}
+
+		if (I915_READ(HDMIC) & PORT_DETECTED)
+			intel_hdmi_init(dev, HDMIC);
+
+		if (I915_READ(HDMID) & PORT_DETECTED)
+			intel_hdmi_init(dev, HDMID);
+
 	} else if (IS_I9XX(dev)) {
 		int found;
 		u32 reg;