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f453ba04 DA |
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 | ||
f453ba04 DA |
36 | #include <linux/spinlock.h> |
37 | #include <linux/types.h> | |
38 | #include <linux/idr.h> | |
39 | ||
40 | #include <linux/fb.h> | |
41 | ||
42 | struct drm_crtc_helper_funcs { | |
43 | /* | |
44 | * Control power levels on the CRTC. If the mode passed in is | |
45 | * unsupported, the provider must use the next lowest power level. | |
46 | */ | |
47 | void (*dpms)(struct drm_crtc *crtc, int mode); | |
48 | void (*prepare)(struct drm_crtc *crtc); | |
49 | void (*commit)(struct drm_crtc *crtc); | |
50 | ||
51 | /* Provider can fixup or change mode timings before modeset occurs */ | |
52 | bool (*mode_fixup)(struct drm_crtc *crtc, | |
53 | struct drm_display_mode *mode, | |
54 | struct drm_display_mode *adjusted_mode); | |
55 | /* Actually set the mode */ | |
5c3b82e2 CW |
56 | int (*mode_set)(struct drm_crtc *crtc, struct drm_display_mode *mode, |
57 | struct drm_display_mode *adjusted_mode, int x, int y, | |
58 | struct drm_framebuffer *old_fb); | |
f453ba04 DA |
59 | |
60 | /* Move the crtc on the current fb to the given position *optional* */ | |
5c3b82e2 CW |
61 | int (*mode_set_base)(struct drm_crtc *crtc, int x, int y, |
62 | struct drm_framebuffer *old_fb); | |
f453ba04 DA |
63 | }; |
64 | ||
65 | struct drm_encoder_helper_funcs { | |
66 | void (*dpms)(struct drm_encoder *encoder, int mode); | |
67 | void (*save)(struct drm_encoder *encoder); | |
68 | void (*restore)(struct drm_encoder *encoder); | |
69 | ||
70 | bool (*mode_fixup)(struct drm_encoder *encoder, | |
71 | struct drm_display_mode *mode, | |
72 | struct drm_display_mode *adjusted_mode); | |
73 | void (*prepare)(struct drm_encoder *encoder); | |
74 | void (*commit)(struct drm_encoder *encoder); | |
75 | void (*mode_set)(struct drm_encoder *encoder, | |
76 | struct drm_display_mode *mode, | |
77 | struct drm_display_mode *adjusted_mode); | |
7bec756c | 78 | struct drm_crtc *(*get_crtc)(struct drm_encoder *encoder); |
f453ba04 DA |
79 | /* detect for DAC style encoders */ |
80 | enum drm_connector_status (*detect)(struct drm_encoder *encoder, | |
81 | struct drm_connector *connector); | |
a3a0544b DA |
82 | /* disable encoder when not in use - more explicit than dpms off */ |
83 | void (*disable)(struct drm_encoder *encoder); | |
f453ba04 DA |
84 | }; |
85 | ||
86 | struct drm_connector_helper_funcs { | |
87 | int (*get_modes)(struct drm_connector *connector); | |
88 | int (*mode_valid)(struct drm_connector *connector, | |
89 | struct drm_display_mode *mode); | |
90 | struct drm_encoder *(*best_encoder)(struct drm_connector *connector); | |
91 | }; | |
92 | ||
40a518d9 | 93 | extern int drm_helper_probe_single_connector_modes(struct drm_connector *connector, uint32_t maxX, uint32_t maxY); |
f453ba04 DA |
94 | extern void drm_helper_disable_unused_functions(struct drm_device *dev); |
95 | extern int drm_helper_hotplug_stage_two(struct drm_device *dev); | |
7a1fb5d0 | 96 | extern bool drm_helper_initial_config(struct drm_device *dev); |
f453ba04 DA |
97 | extern int drm_crtc_helper_set_config(struct drm_mode_set *set); |
98 | extern bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, | |
99 | struct drm_display_mode *mode, | |
3c4fdcfb KH |
100 | int x, int y, |
101 | struct drm_framebuffer *old_fb); | |
f453ba04 | 102 | extern bool drm_helper_crtc_in_use(struct drm_crtc *crtc); |
f380ef86 | 103 | extern bool drm_helper_encoder_in_use(struct drm_encoder *encoder); |
f453ba04 | 104 | |
c9fb15f6 KP |
105 | extern void drm_helper_connector_dpms(struct drm_connector *connector, int mode); |
106 | ||
f453ba04 DA |
107 | extern int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
108 | struct drm_mode_fb_cmd *mode_cmd); | |
109 | ||
110 | static inline void drm_crtc_helper_add(struct drm_crtc *crtc, | |
111 | const struct drm_crtc_helper_funcs *funcs) | |
112 | { | |
113 | crtc->helper_private = (void *)funcs; | |
114 | } | |
115 | ||
116 | static inline void drm_encoder_helper_add(struct drm_encoder *encoder, | |
117 | const struct drm_encoder_helper_funcs *funcs) | |
118 | { | |
119 | encoder->helper_private = (void *)funcs; | |
120 | } | |
121 | ||
122 | static inline void drm_connector_helper_add(struct drm_connector *connector, | |
123 | const struct drm_connector_helper_funcs *funcs) | |
124 | { | |
125 | connector->helper_private = (void *)funcs; | |
126 | } | |
127 | ||
128 | extern int drm_helper_resume_force_mode(struct drm_device *dev); | |
129 | #endif |