1 files changed, 134 insertions, 0 deletions
diff --git a/drivers/gpu/drm/mxsfb/mxsfb_out.c b/drivers/gpu/drm/mxsfb/mxsfb_out.c
new file mode 100644
index 000000000000..5587341862ab
--- /dev/null
+++ b/drivers/gpu/drm/mxsfb/mxsfb_out.c
@@ -0,0 +1,134 @@
+/*
+ * Copyright (C) 2016 Marek Vasut <marex@denx.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/of_graph.h>
+
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_panel.h>
+#include <drm/drm_plane_helper.h>
+#include <drm/drm_simple_kms_helper.h>
+#include <drm/drmP.h>
+
+#include "mxsfb_drv.h"
+
+static struct mxsfb_drm_private *
+drm_connector_to_mxsfb_drm_private(struct drm_connector *connector)
+{
+	return container_of(connector, struct mxsfb_drm_private,
+			    panel_connector);
+}
+
+static int mxsfb_panel_get_modes(struct drm_connector *connector)
+{
+	struct mxsfb_drm_private *mxsfb =
+			drm_connector_to_mxsfb_drm_private(connector);
+
+	if (mxsfb->panel)
+		return mxsfb->panel->funcs->get_modes(mxsfb->panel);
+
+	return 0;
+}
+
+static const struct
+drm_connector_helper_funcs mxsfb_panel_connector_helper_funcs = {
+	.get_modes = mxsfb_panel_get_modes,
+};
+
+static enum drm_connector_status
+mxsfb_panel_connector_detect(struct drm_connector *connector, bool force)
+{
+	struct mxsfb_drm_private *mxsfb =
+			drm_connector_to_mxsfb_drm_private(connector);
+
+	if (mxsfb->panel)
+		return connector_status_connected;
+
+	return connector_status_disconnected;
+}
+
+static void mxsfb_panel_connector_destroy(struct drm_connector *connector)
+{
+	struct mxsfb_drm_private *mxsfb =
+			drm_connector_to_mxsfb_drm_private(connector);
+
+	if (mxsfb->panel)
+		drm_panel_detach(mxsfb->panel);
+
+	drm_connector_unregister(connector);
+	drm_connector_cleanup(connector);
+}
+
+static const struct drm_connector_funcs mxsfb_panel_connector_funcs = {
+	.dpms			= drm_atomic_helper_connector_dpms,
+	.detect			= mxsfb_panel_connector_detect,
+	.fill_modes		= drm_helper_probe_single_connector_modes,
+	.destroy		= mxsfb_panel_connector_destroy,
+	.reset			= drm_atomic_helper_connector_reset,
+	.atomic_duplicate_state	= drm_atomic_helper_connector_duplicate_state,
+	.atomic_destroy_state	= drm_atomic_helper_connector_destroy_state,
+};
+
+static int mxsfb_attach_endpoint(struct drm_device *drm,
+				 const struct of_endpoint *ep)
+{
+	struct mxsfb_drm_private *mxsfb = drm->dev_private;
+	struct device_node *np;
+	int ret = 0;
+
+	np = of_graph_get_remote_port_parent(ep->local_node);
+	mxsfb->panel = of_drm_find_panel(np);
+	if (!mxsfb->panel)
+		mxsfb->bridge = of_drm_find_bridge(np);
+	of_node_put(np);
+
+	if (!mxsfb->panel && !mxsfb->bridge)
+		return -EPROBE_DEFER;
+
+	if (mxsfb->panel) {
+		mxsfb->connector = &mxsfb->panel_connector;
+		mxsfb->connector->dpms = DRM_MODE_DPMS_OFF;
+		mxsfb->connector->polled = 0;
+		drm_connector_helper_add(mxsfb->connector,
+				&mxsfb_panel_connector_helper_funcs);
+		ret = drm_connector_init(drm, mxsfb->connector,
+					 &mxsfb_panel_connector_funcs,
+					 DRM_MODE_CONNECTOR_Unknown);
+	}
+
+	return ret;
+}
+
+int mxsfb_create_output(struct drm_device *drm)
+{
+	struct device_node *ep_np = NULL;
+	struct of_endpoint ep;
+	int ret;
+
+	for_each_endpoint_of_node(drm->dev->of_node, ep_np) {
+		ret = of_graph_parse_endpoint(ep_np, &ep);
+		if (!ret)
+			ret = mxsfb_attach_endpoint(drm, &ep);
+
+		if (ret) {
+			of_node_put(ep_np);
+			return ret;
+		}
+	}
+
+	return 0;
+}