Line data Source code
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 <dev/pci/drm/drm_rect.h>
28 : #include <dev/pci/drm/drm_crtc.h>
29 :
30 : /*
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.
33 : *
34 : * Due to src being in 16.16 fixed point and dest being in integer pixels,
35 : * 1<<16 represents no scaling.
36 : */
37 : #define DRM_PLANE_HELPER_NO_SCALING (1<<16)
38 :
39 : /**
40 : * DOC: plane helpers
41 : *
42 : * Helper functions to assist with creation and handling of CRTC primary
43 : * planes.
44 : */
45 :
46 : int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
47 : const struct drm_crtc_funcs *funcs);
48 :
49 : /**
50 : * drm_plane_helper_funcs - helper operations for CRTCs
51 : * @prepare_fb: prepare a framebuffer for use by the plane
52 : * @cleanup_fb: cleanup a framebuffer when it's no longer used by the plane
53 : * @atomic_check: check that a given atomic state is valid and can be applied
54 : * @atomic_update: apply an atomic state to the plane (mandatory)
55 : * @atomic_disable: disable the plane
56 : *
57 : * The helper operations are called by the mid-layer CRTC helper.
58 : */
59 : struct drm_plane_helper_funcs {
60 : int (*prepare_fb)(struct drm_plane *plane,
61 : const struct drm_plane_state *new_state);
62 : void (*cleanup_fb)(struct drm_plane *plane,
63 : const struct drm_plane_state *old_state);
64 :
65 : int (*atomic_check)(struct drm_plane *plane,
66 : struct drm_plane_state *state);
67 : void (*atomic_update)(struct drm_plane *plane,
68 : struct drm_plane_state *old_state);
69 : void (*atomic_disable)(struct drm_plane *plane,
70 : struct drm_plane_state *old_state);
71 : };
72 :
73 0 : static inline void drm_plane_helper_add(struct drm_plane *plane,
74 : const struct drm_plane_helper_funcs *funcs)
75 : {
76 0 : plane->helper_private = funcs;
77 0 : }
78 :
79 : int drm_plane_helper_check_update(struct drm_plane *plane,
80 : struct drm_crtc *crtc,
81 : struct drm_framebuffer *fb,
82 : struct drm_rect *src,
83 : struct drm_rect *dest,
84 : const struct drm_rect *clip,
85 : int min_scale,
86 : int max_scale,
87 : bool can_position,
88 : bool can_update_disabled,
89 : bool *visible);
90 : int drm_primary_helper_update(struct drm_plane *plane,
91 : struct drm_crtc *crtc,
92 : struct drm_framebuffer *fb,
93 : int crtc_x, int crtc_y,
94 : unsigned int crtc_w, unsigned int crtc_h,
95 : uint32_t src_x, uint32_t src_y,
96 : uint32_t src_w, uint32_t src_h);
97 : int drm_primary_helper_disable(struct drm_plane *plane);
98 : void drm_primary_helper_destroy(struct drm_plane *plane);
99 : extern const struct drm_plane_funcs drm_primary_helper_funcs;
100 :
101 : int drm_plane_helper_update(struct drm_plane *plane, struct drm_crtc *crtc,
102 : struct drm_framebuffer *fb,
103 : int crtc_x, int crtc_y,
104 : unsigned int crtc_w, unsigned int crtc_h,
105 : uint32_t src_x, uint32_t src_y,
106 : uint32_t src_w, uint32_t src_h);
107 : int drm_plane_helper_disable(struct drm_plane *plane);
108 :
109 : /* For use by drm_crtc_helper.c */
110 : int drm_plane_helper_commit(struct drm_plane *plane,
111 : struct drm_plane_state *plane_state,
112 : struct drm_framebuffer *old_fb);
113 : #endif
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