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1/* SPDX-License-Identifier: GPL-2.0+ */2/*3 * R-Car Display Unit Writeback Support4 *5 * Copyright (C) 2019 Laurent Pinchart <laurent.pinchart@ideasonboard.com>6 */7 8#ifndef __RCAR_DU_WRITEBACK_H__9#define __RCAR_DU_WRITEBACK_H__10 11#include <drm/drm_plane.h>12 13struct rcar_du_crtc;14struct rcar_du_device;15struct vsp1_du_atomic_pipe_config;16 17#ifdef CONFIG_DRM_RCAR_WRITEBACK18int rcar_du_writeback_init(struct rcar_du_device *rcdu,19 struct rcar_du_crtc *rcrtc);20void rcar_du_writeback_setup(struct rcar_du_crtc *rcrtc,21 struct vsp1_du_writeback_config *cfg);22void rcar_du_writeback_complete(struct rcar_du_crtc *rcrtc);23#else24static inline int rcar_du_writeback_init(struct rcar_du_device *rcdu,25 struct rcar_du_crtc *rcrtc)26{27 return -ENXIO;28}29static inline void30rcar_du_writeback_setup(struct rcar_du_crtc *rcrtc,31 struct vsp1_du_writeback_config *cfg)32{33}34static inline void rcar_du_writeback_complete(struct rcar_du_crtc *rcrtc)35{36}37#endif38 39#endif /* __RCAR_DU_WRITEBACK_H__ */40