3 files changed, 40 insertions, 9 deletions

diff --git a/drivers/gpu/drm/omapdrm/dss/base.c b/drivers/gpu/drm/omapdrm/dss/base.c
index 81ea0f55cd75..09c9f2971aa2 100644
--- a/drivers/gpu/drm/omapdrm/dss/base.c
+++ b/drivers/gpu/drm/omapdrm/dss/base.c
@@ -19,6 +19,7 @@
 #include <linux/mutex.h>
 #include <linux/of.h>
 #include <linux/of_graph.h>
+#include <linux/platform_device.h>
 
 #include "dss.h"
 #include "omapdss.h"
@@ -156,7 +157,7 @@ struct omap_dss_device *omapdss_device_next_output(struct omap_dss_device *from)
 			goto done;
 		}
 
-		if (dssdev->id && dssdev->next)
+		if (dssdev->id && (dssdev->next || dssdev->bridge))
 			goto done;
 	}
 
@@ -184,7 +185,18 @@ int omapdss_device_connect(struct dss_device *dss,
 {
 	int ret;
 
-	dev_dbg(dst->dev, "connect\n");
+	dev_dbg(&dss->pdev->dev, "connect(%s, %s)\n",
+		src ? dev_name(src->dev) : "NULL",
+		dst ? dev_name(dst->dev) : "NULL");
+
+	if (!dst) {
+		/*
+		 * The destination is NULL when the source is connected to a
+		 * bridge instead of a DSS device. Stop here, we will attach the
+		 * bridge later when we will have a DRM encoder.
+		 */
+		return src && src->bridge ? 0 : -EINVAL;
+	}
 
 	if (omapdss_device_is_connected(dst))
 		return -EBUSY;
@@ -204,7 +216,16 @@ EXPORT_SYMBOL_GPL(omapdss_device_connect);
 void omapdss_device_disconnect(struct omap_dss_device *src,
 			       struct omap_dss_device *dst)
 {
-	dev_dbg(dst->dev, "disconnect\n");
+	struct dss_device *dss = src ? src->dss : dst->dss;
+
+	dev_dbg(&dss->pdev->dev, "disconnect(%s, %s)\n",
+		src ? dev_name(src->dev) : "NULL",
+		dst ? dev_name(dst->dev) : "NULL");
+
+	if (!dst) {
+		WARN_ON(!src->bridge);
+		return;
+	}
 
 	if (!dst->id && !omapdss_device_is_connected(dst)) {
 		WARN_ON(!dst->display);
diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h b/drivers/gpu/drm/omapdrm/dss/omapdss.h
index ab5467a1e92c..f47e9b94288f 100644
--- a/drivers/gpu/drm/omapdrm/dss/omapdss.h
+++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h
@@ -410,6 +410,7 @@ struct omap_dss_device {
 
 	struct dss_device *dss;
 	struct omap_dss_device *next;
+	struct drm_bridge *bridge;
 
 	struct list_head list;
 
diff --git a/drivers/gpu/drm/omapdrm/dss/output.c b/drivers/gpu/drm/omapdrm/dss/output.c
index f25ecfd26534..2a53025c2fde 100644
--- a/drivers/gpu/drm/omapdrm/dss/output.c
+++ b/drivers/gpu/drm/omapdrm/dss/output.c
@@ -20,25 +20,34 @@
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/of.h>
+#include <linux/of_graph.h>
 
 #include "dss.h"
 #include "omapdss.h"
 
 int omapdss_device_init_output(struct omap_dss_device *out)
 {
-	out->next = omapdss_of_find_connected_device(out->dev->of_node, 0);
-	if (IS_ERR(out->next)) {
-		if (PTR_ERR(out->next) != -EPROBE_DEFER)
-			dev_err(out->dev, "failed to find video sink\n");
-		return PTR_ERR(out->next);
+	struct device_node *remote_node;
+
+	remote_node = of_graph_get_remote_node(out->dev->of_node, 0, 0);
+	if (!remote_node) {
+		dev_dbg(out->dev, "failed to find video sink\n");
+		return 0;
 	}
 
+	out->next = omapdss_find_device_by_node(remote_node);
+	out->bridge = of_drm_find_bridge(remote_node);
+
+	of_node_put(remote_node);
+
 	if (out->next && out->type != out->next->type) {
 		dev_err(out->dev, "output type and display type don't match\n");
+		omapdss_device_put(out->next);
+		out->next = NULL;
 		return -EINVAL;
 	}
 
-	return 0;
+	return out->next || out->bridge ? 0 : -EPROBE_DEFER;
 }
 EXPORT_SYMBOL(omapdss_device_init_output);