1 /*
2  * Copyright (C) 2011-2013 Intel Corporation
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice (including the next
12  * paragraph) shall be included in all copies or substantial portions of the
13  * Software.
14  *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21  * SOFTWARE.
22  */
23 
24 #ifndef DRM_PLANE_HELPER_H
25 #define DRM_PLANE_HELPER_H
26 
27 #include <drm/drm_rect.h>
28 #include <drm/drm_crtc.h>
29 #include <drm/drm_modeset_helper_vtables.h>
30 #include <drm/drm_modeset_helper.h>
31 
32 /*
33  * Drivers that don't allow primary plane scaling may pass this macro in place
34  * of the min/max scale parameters of the update checker function.
35  *
36  * Due to src being in 16.16 fixed point and dest being in integer pixels,
37  * 1<<16 represents no scaling.
38  */
39 #define DRM_PLANE_HELPER_NO_SCALING (1<<16)
40 
41 void drm_primary_helper_destroy(struct drm_plane *plane);
42 extern const struct drm_plane_funcs drm_primary_helper_funcs;
43 
44 #endif
45