forked from Minki/linux
12e32f554d
Implement writeback support for R-Car Gen3 by exposing writeback connectors. Behind the scene the calls are forwarded to the VSP backend. Using writeback connectors will allow implemented writeback support for R-Car Gen2 with a consistent API if desired. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
40 lines
1022 B
C
40 lines
1022 B
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* rcar_du_writeback.h -- R-Car Display Unit Writeback Support
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*
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* Copyright (C) 2019 Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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*/
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#ifndef __RCAR_DU_WRITEBACK_H__
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#define __RCAR_DU_WRITEBACK_H__
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#include <drm/drm_plane.h>
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struct rcar_du_crtc;
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struct rcar_du_device;
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struct vsp1_du_atomic_pipe_config;
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#ifdef CONFIG_DRM_RCAR_WRITEBACK
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int rcar_du_writeback_init(struct rcar_du_device *rcdu,
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struct rcar_du_crtc *rcrtc);
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void rcar_du_writeback_setup(struct rcar_du_crtc *rcrtc,
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struct vsp1_du_writeback_config *cfg);
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void rcar_du_writeback_complete(struct rcar_du_crtc *rcrtc);
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#else
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static inline int rcar_du_writeback_init(struct rcar_du_device *rcdu,
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struct rcar_du_crtc *rcrtc)
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{
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return -ENXIO;
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}
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static inline void
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rcar_du_writeback_setup(struct rcar_du_crtc *rcrtc,
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struct vsp1_du_writeback_config *cfg)
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{
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}
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static inline void rcar_du_writeback_complete(struct rcar_du_crtc *rcrtc)
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{
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}
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#endif
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#endif /* __RCAR_DU_WRITEBACK_H__ */
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