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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);
50 extern int drm_plane_helper_check_update(struct drm_plane *plane,
51 struct drm_crtc *crtc,
52 struct drm_framebuffer *fb,
54 struct drm_rect *dest,
55 const struct drm_rect *clip,
59 bool can_update_disabled,
61 extern int drm_primary_helper_update(struct drm_plane *plane,
62 struct drm_crtc *crtc,
63 struct drm_framebuffer *fb,
64 int crtc_x, int crtc_y,
65 unsigned int crtc_w, unsigned int crtc_h,
66 uint32_t src_x, uint32_t src_y,
67 uint32_t src_w, uint32_t src_h);
68 extern int drm_primary_helper_disable(struct drm_plane *plane);
69 extern void drm_primary_helper_destroy(struct drm_plane *plane);
70 extern const struct drm_plane_funcs drm_primary_helper_funcs;
71 extern struct drm_plane *drm_primary_helper_create_plane(struct drm_device *dev,
72 const uint32_t *formats,