1 /*
2  * Copyright © 2006 Keith Packard
3  * Copyright © 2007-2008 Dave Airlie
4  * Copyright © 2007-2008 Intel Corporation
5  *   Jesse Barnes <jesse.barnes@intel.com>
6  *
7  * Permission is hereby granted, free of charge, to any person obtaining a
8  * copy of this software and associated documentation files (the "Software"),
9  * to deal in the Software without restriction, including without limitation
10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11  * and/or sell copies of the Software, and to permit persons to whom the
12  * Software is furnished to do so, subject to the following conditions:
13  *
14  * The above copyright notice and this permission notice shall be included in
15  * all copies or substantial portions of the Software.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
20  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23  * OTHER DEALINGS IN THE SOFTWARE.
24  */
25 
26 /*
27  * The DRM mode setting helper functions are common code for drivers to use if
28  * they wish.  Drivers are not forced to use this code in their
29  * implementations but it would be useful if they code they do use at least
30  * provides a consistent interface and operation to userspace
31  */
32 
33 #ifndef __DRM_CRTC_HELPER_H__
34 #define __DRM_CRTC_HELPER_H__
35 
36 #include <linux/types.h>
37 
38 struct drm_atomic_state;
39 struct drm_connector;
40 struct drm_crtc;
41 struct drm_device;
42 struct drm_display_mode;
43 struct drm_encoder;
44 struct drm_framebuffer;
45 struct drm_mode_set;
46 struct drm_modeset_acquire_ctx;
47 
48 void drm_helper_disable_unused_functions(struct drm_device *dev);
49 int drm_crtc_helper_set_config(struct drm_mode_set *set,
50 			       struct drm_modeset_acquire_ctx *ctx);
51 bool drm_crtc_helper_set_mode(struct drm_crtc *crtc,
52 			      struct drm_display_mode *mode,
53 			      int x, int y,
54 			      struct drm_framebuffer *old_fb);
55 int drm_crtc_helper_atomic_check(struct drm_crtc *crtc,
56 				 struct drm_atomic_state *state);
57 bool drm_helper_crtc_in_use(struct drm_crtc *crtc);
58 bool drm_helper_encoder_in_use(struct drm_encoder *encoder);
59 
60 int drm_helper_connector_dpms(struct drm_connector *connector, int mode);
61 
62 void drm_helper_resume_force_mode(struct drm_device *dev);
63 int drm_helper_force_disable_all(struct drm_device *dev);
64 
65 #endif
66