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 struct drm_device; 31 struct drm_atomic_state; 32 struct drm_plane; 33 34 static 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 int drm_plane_create_rotation_property(struct drm_plane *plane, 40 unsigned int rotation, 41 unsigned int supported_rotations); 42 unsigned int drm_rotation_simplify(unsigned int rotation, 43 unsigned int supported_rotations); 44 45 int drm_plane_create_zpos_property(struct drm_plane *plane, 46 unsigned int zpos, 47 unsigned int min, unsigned int max); 48 int drm_plane_create_zpos_immutable_property(struct drm_plane *plane, 49 unsigned int zpos); 50 int drm_atomic_normalize_zpos(struct drm_device *dev, 51 struct drm_atomic_state *state); 52 #endif 53