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 62