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 29 struct drm_device; 30 struct drm_atomic_state; 31 struct drm_plane; 32 33 /* 34 * Rotation property bits. DRM_ROTATE_<degrees> rotates the image by the 35 * specified amount in degrees in counter clockwise direction. DRM_REFLECT_X and 36 * DRM_REFLECT_Y reflects the image along the specified axis prior to rotation 37 * 38 * WARNING: These defines are UABI since they're exposed in the rotation 39 * property. 40 */ 41 #define DRM_ROTATE_0 BIT(0) 42 #define DRM_ROTATE_90 BIT(1) 43 #define DRM_ROTATE_180 BIT(2) 44 #define DRM_ROTATE_270 BIT(3) 45 #define DRM_ROTATE_MASK (DRM_ROTATE_0 | DRM_ROTATE_90 | \ 46 DRM_ROTATE_180 | DRM_ROTATE_270) 47 #define DRM_REFLECT_X BIT(4) 48 #define DRM_REFLECT_Y BIT(5) 49 #define DRM_REFLECT_MASK (DRM_REFLECT_X | DRM_REFLECT_Y) 50 51 static inline bool drm_rotation_90_or_270(unsigned int rotation) 52 { 53 return rotation & (DRM_ROTATE_90 | DRM_ROTATE_270); 54 } 55 56 int drm_plane_create_rotation_property(struct drm_plane *plane, 57 unsigned int rotation, 58 unsigned int supported_rotations); 59 unsigned int drm_rotation_simplify(unsigned int rotation, 60 unsigned int supported_rotations); 61 62 int drm_plane_create_zpos_property(struct drm_plane *plane, 63 unsigned int zpos, 64 unsigned int min, unsigned int max); 65 int drm_plane_create_zpos_immutable_property(struct drm_plane *plane, 66 unsigned int zpos); 67 int drm_atomic_normalize_zpos(struct drm_device *dev, 68 struct drm_atomic_state *state); 69 #endif 70