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
  30struct drm_device;
  31struct drm_atomic_state;
  32struct drm_plane;
  33
  34static inline bool drm_rotation_90_or_270(unsigned int rotation)
  35{
  36        return rotation & (DRM_MODE_ROTATE_90 | DRM_MODE_ROTATE_270);
  37}
  38
  39#define DRM_BLEND_ALPHA_OPAQUE          0xffff
  40
  41int drm_plane_create_alpha_property(struct drm_plane *plane);
  42int drm_plane_create_rotation_property(struct drm_plane *plane,
  43                                       unsigned int rotation,
  44                                       unsigned int supported_rotations);
  45unsigned int drm_rotation_simplify(unsigned int rotation,
  46                                   unsigned int supported_rotations);
  47
  48int drm_plane_create_zpos_property(struct drm_plane *plane,
  49                                   unsigned int zpos,
  50                                   unsigned int min, unsigned int max);
  51int drm_plane_create_zpos_immutable_property(struct drm_plane *plane,
  52                                             unsigned int zpos);
  53int drm_atomic_normalize_zpos(struct drm_device *dev,
  54                              struct drm_atomic_state *state);
  55#endif
  56