1 files changed, 69 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_encoder.c b/drivers/gpu/drm/tilcdc/tilcdc_encoder.c
new file mode 100644
index 000000000000..680a2ac6ab59
--- /dev/null
+++ b/drivers/gpu/drm/tilcdc/tilcdc_encoder.c
@@ -0,0 +1,69 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2015 Texas Instruments
+ * Author: Jyri Sarha <jsarha@ti.com>
+ */
+
+#include <linux/of_graph.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_bridge.h>
+#include <drm/drm_bridge_connector.h>
+#include <drm/drm_of.h>
+#include <drm/drm_simple_kms_helper.h>
+
+#include "tilcdc_drv.h"
+#include "tilcdc_encoder.h"
+
+static
+int tilcdc_attach_bridge(struct drm_device *ddev, struct drm_bridge *bridge)
+{
+	struct tilcdc_drm_private *priv = ddev_to_tilcdc_priv(ddev);
+	struct drm_connector *connector;
+	int ret;
+
+	priv->encoder->base.possible_crtcs = BIT(0);
+
+	ret = drm_bridge_attach(&priv->encoder->base, bridge, NULL,
+				DRM_BRIDGE_ATTACH_NO_CONNECTOR);
+	if (ret)
+		return ret;
+
+	connector = drm_bridge_connector_init(ddev, &priv->encoder->base);
+	if (IS_ERR(connector)) {
+		drm_err(ddev, "bridge_connector create failed\n");
+		return PTR_ERR(connector);
+	}
+
+	ret = drm_connector_attach_encoder(connector, &priv->encoder->base);
+	if (ret) {
+		drm_err(ddev, "attaching encoder to connector failed\n");
+		return ret;
+	}
+
+	priv->connector = connector;
+	return 0;
+}
+
+int tilcdc_encoder_create(struct drm_device *ddev)
+{
+	struct tilcdc_drm_private *priv = ddev_to_tilcdc_priv(ddev);
+	struct tilcdc_encoder *encoder;
+	struct drm_bridge *bridge;
+
+	bridge = devm_drm_of_get_bridge(ddev->dev, ddev->dev->of_node, 0, 0);
+	if (PTR_ERR(bridge) == -ENODEV)
+		return 0;
+	else if (IS_ERR(bridge))
+		return PTR_ERR(bridge);
+
+	encoder = drmm_simple_encoder_alloc(ddev, struct tilcdc_encoder,
+					    base, DRM_MODE_ENCODER_NONE);
+	if (IS_ERR(encoder)) {
+		drm_err(ddev, "drm_encoder_init() failed %pe\n", encoder);
+		return PTR_ERR(encoder);
+	}
+	priv->encoder = encoder;
+
+	return tilcdc_attach_bridge(ddev, bridge);
+}