1 files changed, 134 insertions, 0 deletions
diff --git a/drivers/gpu/drm/omapdrm/dss/output.c b/drivers/gpu/drm/omapdrm/dss/output.c
new file mode 100644
index 000000000..7378e855c
--- /dev/null
+++ b/drivers/gpu/drm/omapdrm/dss/output.c
@@ -0,0 +1,134 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
+ * Author: Archit Taneja <archit@ti.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/of_graph.h>
+
+#include <drm/drm_bridge.h>
+#include <drm/drm_panel.h>
+
+#include "dss.h"
+#include "omapdss.h"
+
+int omapdss_device_init_output(struct omap_dss_device *out,
+			       struct drm_bridge *local_bridge)
+{
+	struct device_node *remote_node;
+	int ret;
+
+	remote_node = of_graph_get_remote_node(out->dev->of_node,
+					       out->of_port, 0);
+	if (!remote_node) {
+		dev_dbg(out->dev, "failed to find video sink\n");
+		return 0;
+	}
+
+	out->bridge = of_drm_find_bridge(remote_node);
+	out->panel = of_drm_find_panel(remote_node);
+	if (IS_ERR(out->panel))
+		out->panel = NULL;
+
+	of_node_put(remote_node);
+
+	if (out->panel) {
+		struct drm_bridge *bridge;
+
+		bridge = drm_panel_bridge_add(out->panel);
+		if (IS_ERR(bridge)) {
+			dev_err(out->dev,
+				"unable to create panel bridge (%ld)\n",
+				PTR_ERR(bridge));
+			ret = PTR_ERR(bridge);
+			goto error;
+		}
+
+		out->bridge = bridge;
+	}
+
+	if (local_bridge) {
+		if (!out->bridge) {
+			ret = -EPROBE_DEFER;
+			goto error;
+		}
+
+		out->next_bridge = out->bridge;
+		out->bridge = local_bridge;
+	}
+
+	if (!out->bridge) {
+		ret = -EPROBE_DEFER;
+		goto error;
+	}
+
+	return 0;
+
+error:
+	omapdss_device_cleanup_output(out);
+	return ret;
+}
+
+void omapdss_device_cleanup_output(struct omap_dss_device *out)
+{
+	if (out->bridge && out->panel)
+		drm_panel_bridge_remove(out->next_bridge ?
+					out->next_bridge : out->bridge);
+}
+
+void dss_mgr_set_timings(struct omap_dss_device *dssdev,
+			 const struct videomode *vm)
+{
+	omap_crtc_dss_set_timings(dssdev->dss->mgr_ops_priv,
+					  dssdev->dispc_channel, vm);
+}
+
+void dss_mgr_set_lcd_config(struct omap_dss_device *dssdev,
+		const struct dss_lcd_mgr_config *config)
+{
+	omap_crtc_dss_set_lcd_config(dssdev->dss->mgr_ops_priv,
+					     dssdev->dispc_channel, config);
+}
+
+int dss_mgr_enable(struct omap_dss_device *dssdev)
+{
+	return omap_crtc_dss_enable(dssdev->dss->mgr_ops_priv,
+					    dssdev->dispc_channel);
+}
+
+void dss_mgr_disable(struct omap_dss_device *dssdev)
+{
+	omap_crtc_dss_disable(dssdev->dss->mgr_ops_priv,
+				      dssdev->dispc_channel);
+}
+
+void dss_mgr_start_update(struct omap_dss_device *dssdev)
+{
+	omap_crtc_dss_start_update(dssdev->dss->mgr_ops_priv,
+					   dssdev->dispc_channel);
+}
+
+int dss_mgr_register_framedone_handler(struct omap_dss_device *dssdev,
+		void (*handler)(void *), void *data)
+{
+	struct dss_device *dss = dssdev->dss;
+
+	return omap_crtc_dss_register_framedone(dss->mgr_ops_priv,
+							dssdev->dispc_channel,
+							handler, data);
+}
+
+void dss_mgr_unregister_framedone_handler(struct omap_dss_device *dssdev,
+		void (*handler)(void *), void *data)
+{
+	struct dss_device *dss = dssdev->dss;
+
+	omap_crtc_dss_unregister_framedone(dss->mgr_ops_priv,
+						   dssdev->dispc_channel,
+						   handler, data);
+}