1 files changed, 48 insertions, 0 deletions
diff --git a/drivers/gpu/drm/arc/arcpgu_hdmi.c b/drivers/gpu/drm/arc/arcpgu_hdmi.c
new file mode 100644
index 000000000..52839934f
--- /dev/null
+++ b/drivers/gpu/drm/arc/arcpgu_hdmi.c
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ARC PGU DRM driver.
+ *
+ * Copyright (C) 2016 Synopsys, Inc. (www.synopsys.com)
+ */
+
+#include <drm/drm_bridge.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_encoder.h>
+#include <drm/drm_device.h>
+
+#include "arcpgu.h"
+
+static struct drm_encoder_funcs arcpgu_drm_encoder_funcs = {
+	.destroy = drm_encoder_cleanup,
+};
+
+int arcpgu_drm_hdmi_init(struct drm_device *drm, struct device_node *np)
+{
+	struct drm_encoder *encoder;
+	struct drm_bridge *bridge;
+
+	int ret = 0;
+
+	encoder = devm_kzalloc(drm->dev, sizeof(*encoder), GFP_KERNEL);
+	if (encoder == NULL)
+		return -ENOMEM;
+
+	/* Locate drm bridge from the hdmi encoder DT node */
+	bridge = of_drm_find_bridge(np);
+	if (!bridge)
+		return -EPROBE_DEFER;
+
+	encoder->possible_crtcs = 1;
+	encoder->possible_clones = 0;
+	ret = drm_encoder_init(drm, encoder, &arcpgu_drm_encoder_funcs,
+			       DRM_MODE_ENCODER_TMDS, NULL);
+	if (ret)
+		return ret;
+
+	/* Link drm_bridge to encoder */
+	ret = drm_bridge_attach(encoder, bridge, NULL, 0);
+	if (ret)
+		drm_encoder_cleanup(encoder);
+
+	return ret;
+}