include/drm/drm_blend.h

   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
  34 struct drm_device;
  35 struct drm_atomic_state;
  36 struct drm_plane;
  37
  38 static 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
  45 int drm_plane_create_alpha_property(struct drm_plane *plane);
  46 int drm_plane_create_rotation_property(struct drm_plane *plane,
  47                                        unsigned int rotation,
  48                                        unsigned int supported_rotations);
  49 unsigned int drm_rotation_simplify(unsigned int rotation,
  50                                    unsigned int supported_rotations);
  51
  52 int drm_plane_create_zpos_property(struct drm_plane *plane,
  53                                    unsigned int zpos,
  54                                    unsigned int min, unsigned int max);
  55 int drm_plane_create_zpos_immutable_property(struct drm_plane *plane,
  56                                              unsigned int zpos);
  57 int drm_atomic_normalize_zpos(struct drm_device *dev,
  58                               struct drm_atomic_state *state);
  59 int drm_plane_create_blend_mode_property(struct drm_plane *plane,
  60                                          unsigned int supported_modes);
  61 #endif