LXR linux/include/drm/drm

   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