1 /*
2  * Copyright (C) 2011-2013 Intel Corporation
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice (including the next
12  * paragraph) shall be included in all copies or substantial portions of the
13  * Software.
14  *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21  * SOFTWARE.
22  */
23 
24 #ifndef DRM_PLANE_HELPER_H
25 #define DRM_PLANE_HELPER_H
26 
27 #include <drm/drm_rect.h>
28 #include <drm/drm_crtc.h>
29 #include <drm/drm_modeset_helper_vtables.h>
30 #include <drm/drm_modeset_helper.h>
31 
32 /*
33  * Drivers that don't allow primary plane scaling may pass this macro in place
34  * of the min/max scale parameters of the update checker function.
35  *
36  * Due to src being in 16.16 fixed point and dest being in integer pixels,
37  * 1<<16 represents no scaling.
38  */
39 #define DRM_PLANE_HELPER_NO_SCALING (1<<16)
40 
41 int drm_plane_helper_check_update(struct drm_plane *plane,
42 				  struct drm_crtc *crtc,
43 				  struct drm_framebuffer *fb,
44 				  struct drm_rect *src,
45 				  struct drm_rect *dest,
46 				  unsigned int rotation,
47 				  int min_scale,
48 				  int max_scale,
49 				  bool can_position,
50 				  bool can_update_disabled,
51 				  bool *visible);
52 int drm_primary_helper_update(struct drm_plane *plane,
53 			      struct drm_crtc *crtc,
54 			      struct drm_framebuffer *fb,
55 			      int crtc_x, int crtc_y,
56 			      unsigned int crtc_w, unsigned int crtc_h,
57 			      uint32_t src_x, uint32_t src_y,
58 			      uint32_t src_w, uint32_t src_h,
59 			      struct drm_modeset_acquire_ctx *ctx);
60 int drm_primary_helper_disable(struct drm_plane *plane,
61 			       struct drm_modeset_acquire_ctx *ctx);
62 void drm_primary_helper_destroy(struct drm_plane *plane);
63 extern const struct drm_plane_funcs drm_primary_helper_funcs;
64 
65 int drm_plane_helper_update(struct drm_plane *plane, struct drm_crtc *crtc,
66 			    struct drm_framebuffer *fb,
67 			    int crtc_x, int crtc_y,
68 			    unsigned int crtc_w, unsigned int crtc_h,
69 			    uint32_t src_x, uint32_t src_y,
70 			    uint32_t src_w, uint32_t src_h,
71 			    struct drm_modeset_acquire_ctx *ctx);
72 int drm_plane_helper_disable(struct drm_plane *plane,
73 			     struct drm_modeset_acquire_ctx *ctx);
74 
75 /* For use by drm_crtc_helper.c */
76 int drm_plane_helper_commit(struct drm_plane *plane,
77 			    struct drm_plane_state *plane_state,
78 			    struct drm_framebuffer *old_fb);
79 #endif
80