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_fb_helper.c */
36 #ifdef CONFIG_DRM_FBDEV_EMULATION
37 int drm_fb_helper_modinit(void);
38 #else
39 static inline int drm_fb_helper_modinit(void)
40 {
41 return 0;
42 }
43 #endif
44
45 /* drm_dp_aux_dev.c */
46 #ifdef CONFIG_DRM_DP_AUX_CHARDEV
47 int drm_dp_aux_dev_init(void);
48 void drm_dp_aux_dev_exit(void);
49 int drm_dp_aux_register_devnode(struct drm_dp_aux *aux);
50 void drm_dp_aux_unregister_devnode(struct drm_dp_aux *aux);
51 #else
52 static inline int drm_dp_aux_dev_init(void)
53 {
54 return 0;
55 }
56
57 static inline void drm_dp_aux_dev_exit(void)
58 {
59 }
60
61 static inline int drm_dp_aux_register_devnode(struct drm_dp_aux *aux)
62 {
63 return 0;
64 }
65
66 static inline void drm_dp_aux_unregister_devnode(struct drm_dp_aux *aux)
67 {
68 }
69 #endif
70
71 /* drm_probe_helper.c */
72 enum drm_mode_status drm_crtc_mode_valid(struct drm_crtc *crtc,
73 const struct drm_display_mode *mode);
74 enum drm_mode_status drm_encoder_mode_valid(struct drm_encoder *encoder,
75 const struct drm_display_mode *mode);
76 enum drm_mode_status drm_connector_mode_valid(struct drm_connector *connector,
77 struct drm_display_mode *mode);