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24 #ifndef DRM_PLANE_HELPER_H
25 #define DRM_PLANE_HELPER_H
27 #include <drm/drm_rect.h>
28 #include <drm/drm_crtc.h>
31 * Drivers that don't allow primary plane scaling may pass this macro in place
32 * of the min/max scale parameters of the update checker function.
34 * Due to src being in 16.16 fixed point and dest being in integer pixels,
35 * 1<<16 represents no scaling.
37 #define DRM_PLANE_HELPER_NO_SCALING (1<<16)
42 * Helper functions to assist with creation and handling of CRTC primary
46 extern int drm_crtc_init(struct drm_device
*dev
,
47 struct drm_crtc
*crtc
,
48 const struct drm_crtc_funcs
*funcs
);
51 * drm_plane_helper_funcs - helper operations for CRTCs
52 * @prepare_fb: prepare a framebuffer for use by the plane
53 * @cleanup_fb: cleanup a framebuffer when it's no longer used by the plane
54 * @atomic_check: check that a given atomic state is valid and can be applied
55 * @atomic_update: apply an atomic state to the plane (mandatory)
56 * @atomic_disable: disable the plane
58 * The helper operations are called by the mid-layer CRTC helper.
60 struct drm_plane_helper_funcs
{
61 int (*prepare_fb
)(struct drm_plane
*plane
,
62 struct drm_framebuffer
*fb
);
63 void (*cleanup_fb
)(struct drm_plane
*plane
,
64 struct drm_framebuffer
*fb
);
66 int (*atomic_check
)(struct drm_plane
*plane
,
67 struct drm_plane_state
*state
);
68 void (*atomic_update
)(struct drm_plane
*plane
,
69 struct drm_plane_state
*old_state
);
70 void (*atomic_disable
)(struct drm_plane
*plane
,
71 struct drm_plane_state
*old_state
);
74 static inline void drm_plane_helper_add(struct drm_plane
*plane
,
75 const struct drm_plane_helper_funcs
*funcs
)
77 plane
->helper_private
= (void *)funcs
;
80 extern int drm_plane_helper_check_update(struct drm_plane
*plane
,
81 struct drm_crtc
*crtc
,
82 struct drm_framebuffer
*fb
,
84 struct drm_rect
*dest
,
85 const struct drm_rect
*clip
,
89 bool can_update_disabled
,
91 extern int drm_primary_helper_update(struct drm_plane
*plane
,
92 struct drm_crtc
*crtc
,
93 struct drm_framebuffer
*fb
,
94 int crtc_x
, int crtc_y
,
95 unsigned int crtc_w
, unsigned int crtc_h
,
96 uint32_t src_x
, uint32_t src_y
,
97 uint32_t src_w
, uint32_t src_h
);
98 extern int drm_primary_helper_disable(struct drm_plane
*plane
);
99 extern void drm_primary_helper_destroy(struct drm_plane
*plane
);
100 extern const struct drm_plane_funcs drm_primary_helper_funcs
;
101 extern struct drm_plane
*drm_primary_helper_create_plane(struct drm_device
*dev
,
102 const uint32_t *formats
,
106 int drm_plane_helper_update(struct drm_plane
*plane
, struct drm_crtc
*crtc
,
107 struct drm_framebuffer
*fb
,
108 int crtc_x
, int crtc_y
,
109 unsigned int crtc_w
, unsigned int crtc_h
,
110 uint32_t src_x
, uint32_t src_y
,
111 uint32_t src_w
, uint32_t src_h
);
112 int drm_plane_helper_disable(struct drm_plane
*plane
);
114 /* For use by drm_crtc_helper.c */
115 int drm_plane_helper_commit(struct drm_plane
*plane
,
116 struct drm_plane_state
*plane_state
,
117 struct drm_framebuffer
*old_fb
);