1 /*
2  * Copyright © 2016 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 shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20  * OTHER DEALINGS IN THE SOFTWARE.
21  */
22 
23 /*
24  * This header file contains mode setting related functions and definitions
25  * which are only used within the drm kms helper module as internal
26  * implementation details and are not exported to drivers.
27  */
28 
29 #include <drm/drm_connector.h>
30 #include <drm/drm_crtc.h>
31 #include <drm/drm_dp_helper.h>
32 #include <drm/drm_encoder.h>
33 #include <drm/drm_modes.h>
34 
35 /* drm_dp_aux_dev.c */
36 #ifdef CONFIG_DRM_DP_AUX_CHARDEV
37 int drm_dp_aux_dev_init(void);
38 void drm_dp_aux_dev_exit(void);
39 int drm_dp_aux_register_devnode(struct drm_dp_aux *aux);
40 void drm_dp_aux_unregister_devnode(struct drm_dp_aux *aux);
41 #else
42 static inline int drm_dp_aux_dev_init(void)
43 {
44 	return 0;
45 }
46 
47 static inline void drm_dp_aux_dev_exit(void)
48 {
49 }
50 
51 static inline int drm_dp_aux_register_devnode(struct drm_dp_aux *aux)
52 {
53 	return 0;
54 }
55 
56 static inline void drm_dp_aux_unregister_devnode(struct drm_dp_aux *aux)
57 {
58 }
59 #endif
60 
61 /* drm_probe_helper.c */
62 enum drm_mode_status drm_crtc_mode_valid(struct drm_crtc *crtc,
63 					 const struct drm_display_mode *mode);
64 enum drm_mode_status drm_encoder_mode_valid(struct drm_encoder *encoder,
65 					    const struct drm_display_mode *mode);
66 int
67 drm_connector_mode_valid(struct drm_connector *connector,
68 			 struct drm_display_mode *mode,
69 			 struct drm_modeset_acquire_ctx *ctx,
70 			 enum drm_mode_status *status);
71 
72 struct drm_encoder *
73 drm_connector_get_single_encoder(struct drm_connector *connector);
74