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