1 /* $NetBSD: drm_crtc_helper_internal.h,v 1.2 2021/12/18 23:44:57 riastradh Exp $ */
2
3 /*
4 * Copyright © 2016 Intel Corporation
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25 /*
26 * This header file contains mode setting related functions and definitions
27 * which are only used within the drm kms helper module as internal
28 * implementation details and are not exported to drivers.
29 */
30
31 #include <drm/drm_connector.h>
32 #include <drm/drm_crtc.h>
33 #include <drm/drm_dp_helper.h>
34 #include <drm/drm_encoder.h>
35 #include <drm/drm_modes.h>
36
37 /* drm_fb_helper.c */
38 #ifdef CONFIG_DRM_FBDEV_EMULATION
39 int drm_fb_helper_modinit(void);
40 #else
drm_fb_helper_modinit(void)41 static inline int drm_fb_helper_modinit(void)
42 {
43 return 0;
44 }
45 #endif
46
47 /* drm_dp_aux_dev.c */
48 #ifdef CONFIG_DRM_DP_AUX_CHARDEV
49 int drm_dp_aux_dev_init(void);
50 void drm_dp_aux_dev_exit(void);
51 int drm_dp_aux_register_devnode(struct drm_dp_aux *aux);
52 void drm_dp_aux_unregister_devnode(struct drm_dp_aux *aux);
53 #else
drm_dp_aux_dev_init(void)54 static inline int drm_dp_aux_dev_init(void)
55 {
56 return 0;
57 }
58
drm_dp_aux_dev_exit(void)59 static inline void drm_dp_aux_dev_exit(void)
60 {
61 }
62
drm_dp_aux_register_devnode(struct drm_dp_aux * aux)63 static inline int drm_dp_aux_register_devnode(struct drm_dp_aux *aux)
64 {
65 return 0;
66 }
67
drm_dp_aux_unregister_devnode(struct drm_dp_aux * aux)68 static inline void drm_dp_aux_unregister_devnode(struct drm_dp_aux *aux)
69 {
70 }
71 #endif
72
73 /* drm_probe_helper.c */
74 enum drm_mode_status drm_crtc_mode_valid(struct drm_crtc *crtc,
75 const struct drm_display_mode *mode);
76 enum drm_mode_status drm_encoder_mode_valid(struct drm_encoder *encoder,
77 const struct drm_display_mode *mode);
78 enum drm_mode_status drm_connector_mode_valid(struct drm_connector *connector,
79 struct drm_display_mode *mode);
80
81 struct drm_encoder *
82 drm_connector_get_single_encoder(struct drm_connector *connector);
83