drm/rcar-du: Add internal LVDS encoder support

The R8A7790 includes two internal LVDS encoders. Support them in the DU
driver.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

1 files changed, 46 insertions, 0 deletions

diff --git a/drivers/gpu/drm/rcar-du/rcar_du_lvdsenc.h b/drivers/gpu/drm/rcar-du/rcar_du_lvdsenc.h
new file mode 100644
index 000000000000..7051c6de19ae
--- /dev/null
+++ b/drivers/gpu/drm/rcar-du/rcar_du_lvdsenc.h
@@ -0,0 +1,46 @@
+/*
+ * rcar_du_lvdsenc.h  --  R-Car Display Unit LVDS Encoder
+ *
+ * Copyright (C) 2013 Renesas Corporation
+ *
+ * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
+ *
+ * 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.
+ */
+
+#ifndef __RCAR_DU_LVDSENC_H__
+#define __RCAR_DU_LVDSENC_H__
+
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/platform_data/rcar-du.h>
+
+struct rcar_drm_crtc;
+struct rcar_du_lvdsenc;
+
+enum rcar_lvds_input {
+	RCAR_LVDS_INPUT_DU0,
+	RCAR_LVDS_INPUT_DU1,
+	RCAR_LVDS_INPUT_DU2,
+};
+
+#if IS_ENABLED(CONFIG_DRM_RCAR_LVDS)
+int rcar_du_lvdsenc_init(struct rcar_du_device *rcdu);
+int rcar_du_lvdsenc_dpms(struct rcar_du_lvdsenc *lvds,
+			 struct drm_crtc *crtc, int mode);
+#else
+static inline int rcar_du_lvdsenc_init(struct rcar_du_device *rcdu)
+{
+	return 0;
+}
+static inline int rcar_du_lvdsenc_dpms(struct rcar_du_lvdsenc *lvds,
+				       struct drm_crtc *crtc, int mode)
+{
+	return 0;
+}
+#endif
+
+#endif /* __RCAR_DU_LVDSENC_H__ */