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#ifndef DRM_PLANE_HELPER_H
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#ifndef DRM_PLANE_HELPER_H
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#define DRM_PLANE_HELPER_H
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#define DRM_PLANE_HELPER_H
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#include
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#include
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#include
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#include
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#include
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/*
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/*
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 * Drivers that don't allow primary plane scaling may pass this macro in place
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 * Drivers that don't allow primary plane scaling may pass this macro in place
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 * of the min/max scale parameters of the update checker function.
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 * of the min/max scale parameters of the update checker function.
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 *
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 *
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 * Due to src being in 16.16 fixed point and dest being in integer pixels,
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 * Due to src being in 16.16 fixed point and dest being in integer pixels,
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 * 1<<16 represents no scaling.
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 * 1<<16 represents no scaling.
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 */
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#define DRM_PLANE_HELPER_NO_SCALING (1<<16)
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/**
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 * DOC: plane helpers
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 *
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 * Helper functions to assist with creation and handling of CRTC primary
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 * planes.
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 */
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 */
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#define DRM_PLANE_HELPER_NO_SCALING (1<<16)
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int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
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		  const struct drm_crtc_funcs *funcs);
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/**
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 * drm_plane_helper_funcs - helper operations for CRTCs
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 * @prepare_fb: prepare a framebuffer for use by the plane
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 * @cleanup_fb: cleanup a framebuffer when it's no longer used by the plane
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 * @atomic_check: check that a given atomic state is valid and can be applied
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 * @atomic_update: apply an atomic state to the plane (mandatory)
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 * @atomic_disable: disable the plane
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 *
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 * The helper operations are called by the mid-layer CRTC helper.
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 */
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struct drm_plane_helper_funcs {
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	int (*prepare_fb)(struct drm_plane *plane,
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			  const struct drm_plane_state *new_state);
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	void (*cleanup_fb)(struct drm_plane *plane,
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			   const struct drm_plane_state *old_state);
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	int (*atomic_check)(struct drm_plane *plane,
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			    struct drm_plane_state *state);
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	void (*atomic_update)(struct drm_plane *plane,
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			      struct drm_plane_state *old_state);
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	void (*atomic_disable)(struct drm_plane *plane,
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			       struct drm_plane_state *old_state);
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};
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static inline void drm_plane_helper_add(struct drm_plane *plane,
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					const struct drm_plane_helper_funcs *funcs)
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{
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	plane->helper_private = funcs;
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int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
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}
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		  const struct drm_crtc_funcs *funcs);
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int drm_plane_helper_check_update(struct drm_plane *plane,
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int drm_plane_helper_check_update(struct drm_plane *plane,