drm_blend.h

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/*
 * Copyright (c) 2016 Intel Corporation
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that copyright
 * notice and this permission notice appear in supporting documentation, and
 * that the name of the copyright holders not be used in advertising or
 * publicity pertaining to distribution of the software without specific,
 * written prior permission.  The copyright holders make no representations
 * about the suitability of this software for any purpose.  It is provided "as
 * is" without express or implied warranty.
 *
 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
 * OF THIS SOFTWARE.
 */
 
#ifndef __DRM_BLEND_H__
#define __DRM_BLEND_H__
 
#include <linux/list.h>
#include <linux/ctype.h>
#include <drm/drm_mode.h>
 
#define DRM_MODE_BLEND_PREMULTI     0
#define DRM_MODE_BLEND_COVERAGE     1
#define DRM_MODE_BLEND_PIXEL_NONE   2
 
struct drm_atomic_commit;
struct drm_crtc;
struct drm_device;
struct drm_plane;
 
static inline bool drm_rotation_90_or_270(unsigned int rotation)
{
    return rotation & (DRM_MODE_ROTATE_90 | DRM_MODE_ROTATE_270);
}
 
#define DRM_BLEND_ALPHA_OPAQUE      0xffff
 
int drm_plane_create_alpha_property(struct drm_plane *plane);
int drm_plane_create_rotation_property(struct drm_plane *plane,
                       unsigned int rotation,
                       unsigned int supported_rotations);
unsigned int drm_rotation_simplify(unsigned int rotation,
                   unsigned int supported_rotations);
 
int drm_plane_create_zpos_property(struct drm_plane *plane,
                   unsigned int zpos,
                   unsigned int min, unsigned int max);
int drm_plane_create_zpos_immutable_property(struct drm_plane *plane,
                         unsigned int zpos);
int drm_atomic_normalize_zpos(struct drm_device *dev,
                  struct drm_atomic_commit *state);
int drm_plane_create_blend_mode_property(struct drm_plane *plane,
                     unsigned int supported_modes);
void drm_crtc_attach_background_color_property(struct drm_crtc *crtc);
#endif