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On Gen3 platforms planes are managed by the external VSP compositor on behalf of DRM/KMS. If VSP compositor support is not enabled in the DU driver, the VSP initialization stub routine is called. Return an error from that stub to fail explicitly, otherwise the device won't be usable and the driver will crash. Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> [Clarified commit message] Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
78 lines
2.2 KiB
C
78 lines
2.2 KiB
C
/*
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* rcar_du_vsp.h -- R-Car Display Unit VSP-Based Compositor
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*
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* Copyright (C) 2015 Renesas Electronics Corporation
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*
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* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef __RCAR_DU_VSP_H__
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#define __RCAR_DU_VSP_H__
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#include <drm/drmP.h>
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#include <drm/drm_crtc.h>
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struct rcar_du_format_info;
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struct rcar_du_vsp;
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struct rcar_du_vsp_plane {
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struct drm_plane plane;
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struct rcar_du_vsp *vsp;
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unsigned int index;
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};
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struct rcar_du_vsp {
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unsigned int index;
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struct device *vsp;
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struct rcar_du_device *dev;
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struct rcar_du_vsp_plane *planes;
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unsigned int num_planes;
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};
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static inline struct rcar_du_vsp_plane *to_rcar_vsp_plane(struct drm_plane *p)
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{
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return container_of(p, struct rcar_du_vsp_plane, plane);
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}
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/**
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* struct rcar_du_vsp_plane_state - Driver-specific plane state
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* @state: base DRM plane state
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* @format: information about the pixel format used by the plane
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* @alpha: value of the plane alpha property
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* @zpos: value of the plane zpos property
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*/
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struct rcar_du_vsp_plane_state {
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struct drm_plane_state state;
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const struct rcar_du_format_info *format;
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unsigned int alpha;
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unsigned int zpos;
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};
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static inline struct rcar_du_vsp_plane_state *
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to_rcar_vsp_plane_state(struct drm_plane_state *state)
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{
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return container_of(state, struct rcar_du_vsp_plane_state, state);
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}
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#ifdef CONFIG_DRM_RCAR_VSP
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int rcar_du_vsp_init(struct rcar_du_vsp *vsp);
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void rcar_du_vsp_enable(struct rcar_du_crtc *crtc);
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void rcar_du_vsp_disable(struct rcar_du_crtc *crtc);
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void rcar_du_vsp_atomic_begin(struct rcar_du_crtc *crtc);
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void rcar_du_vsp_atomic_flush(struct rcar_du_crtc *crtc);
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#else
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static inline int rcar_du_vsp_init(struct rcar_du_vsp *vsp) { return -ENXIO; };
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static inline void rcar_du_vsp_enable(struct rcar_du_crtc *crtc) { };
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static inline void rcar_du_vsp_disable(struct rcar_du_crtc *crtc) { };
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static inline void rcar_du_vsp_atomic_begin(struct rcar_du_crtc *crtc) { };
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static inline void rcar_du_vsp_atomic_flush(struct rcar_du_crtc *crtc) { };
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#endif
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#endif /* __RCAR_DU_VSP_H__ */
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