1 /* $NetBSD: drm_blend.h,v 1.2 2021/12/18 23:45:45 riastradh Exp $ */
2
3 /*
4 * Copyright (c) 2016 Intel Corporation
5 *
6 * Permission to use, copy, modify, distribute, and sell this software and its
7 * documentation for any purpose is hereby granted without fee, provided that
8 * the above copyright notice appear in all copies and that both that copyright
9 * notice and this permission notice appear in supporting documentation, and
10 * that the name of the copyright holders not be used in advertising or
11 * publicity pertaining to distribution of the software without specific,
12 * written prior permission. The copyright holders make no representations
13 * about the suitability of this software for any purpose. It is provided "as
14 * is" without express or implied warranty.
15 *
16 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
17 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
18 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
19 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
20 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
21 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
22 * OF THIS SOFTWARE.
23 */
24
25 #ifndef __DRM_BLEND_H__
26 #define __DRM_BLEND_H__
27
28 #include <linux/list.h>
29 #include <linux/ctype.h>
30 #include <drm/drm_mode.h>
31
32 #define DRM_MODE_BLEND_PREMULTI 0
33 #define DRM_MODE_BLEND_COVERAGE 1
34 #define DRM_MODE_BLEND_PIXEL_NONE 2
35
36 struct drm_device;
37 struct drm_atomic_state;
38 struct drm_plane;
39
drm_rotation_90_or_270(unsigned int rotation)40 static inline bool drm_rotation_90_or_270(unsigned int rotation)
41 {
42 return rotation & (DRM_MODE_ROTATE_90 | DRM_MODE_ROTATE_270);
43 }
44
45 #define DRM_BLEND_ALPHA_OPAQUE 0xffff
46
47 int drm_plane_create_alpha_property(struct drm_plane *plane);
48 int drm_plane_create_rotation_property(struct drm_plane *plane,
49 unsigned int rotation,
50 unsigned int supported_rotations);
51 unsigned int drm_rotation_simplify(unsigned int rotation,
52 unsigned int supported_rotations);
53
54 int drm_plane_create_zpos_property(struct drm_plane *plane,
55 unsigned int zpos,
56 unsigned int min, unsigned int max);
57 int drm_plane_create_zpos_immutable_property(struct drm_plane *plane,
58 unsigned int zpos);
59 int drm_atomic_normalize_zpos(struct drm_device *dev,
60 struct drm_atomic_state *state);
61 int drm_plane_create_blend_mode_property(struct drm_plane *plane,
62 unsigned int supported_modes);
63 #endif
64