tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
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
29struct drm_device;
30struct drm_atomic_state;
31
32/*
33 * Rotation property bits. DRM_ROTATE_<degrees> rotates the image by the
34 * specified amount in degrees in counter clockwise direction. DRM_REFLECT_X and
35 * DRM_REFLECT_Y reflects the image along the specified axis prior to rotation
36 *
37 * WARNING: These defines are UABI since they're exposed in the rotation
38 * property.
39 */
40#define DRM_ROTATE_0 BIT(0)
41#define DRM_ROTATE_90 BIT(1)
42#define DRM_ROTATE_180 BIT(2)
43#define DRM_ROTATE_270 BIT(3)
44#define DRM_ROTATE_MASK (DRM_ROTATE_0 | DRM_ROTATE_90 | \
45 DRM_ROTATE_180 | DRM_ROTATE_270)
46#define DRM_REFLECT_X BIT(4)
47#define DRM_REFLECT_Y BIT(5)
48#define DRM_REFLECT_MASK (DRM_REFLECT_X | DRM_REFLECT_Y)
49
50static inline bool drm_rotation_90_or_270(unsigned int rotation)
51{
52 return rotation & (DRM_ROTATE_90 | DRM_ROTATE_270);
53}
54
55int drm_plane_create_rotation_property(struct drm_plane *plane,
56 unsigned int rotation,
57 unsigned int supported_rotations);
58unsigned int drm_rotation_simplify(unsigned int rotation,
59 unsigned int supported_rotations);
60
61int drm_plane_create_zpos_property(struct drm_plane *plane,
62 unsigned int zpos,
63 unsigned int min, unsigned int max);
64int drm_plane_create_zpos_immutable_property(struct drm_plane *plane,
65 unsigned int zpos);
66int drm_atomic_normalize_zpos(struct drm_device *dev,
67 struct drm_atomic_state *state);
68#endif