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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 | ||
21c74a8e JW |
42 | enum mode_set_atomic { |
43 | LEAVE_ATOMIC_MODE_SET, | |
44 | ENTER_ATOMIC_MODE_SET, | |
45 | }; | |
46 | ||
3b02ab88 LP |
47 | /** |
48 | * drm_crtc_helper_funcs - helper operations for CRTCs | |
49 | * @mode_fixup: try to fixup proposed mode for this connector | |
50 | * @mode_set: set this mode | |
51 | * | |
52 | * The helper operations are called by the mid-layer CRTC helper. | |
53 | */ | |
f453ba04 DA |
54 | struct drm_crtc_helper_funcs { |
55 | /* | |
56 | * Control power levels on the CRTC. If the mode passed in is | |
57 | * unsupported, the provider must use the next lowest power level. | |
58 | */ | |
59 | void (*dpms)(struct drm_crtc *crtc, int mode); | |
60 | void (*prepare)(struct drm_crtc *crtc); | |
61 | void (*commit)(struct drm_crtc *crtc); | |
62 | ||
63 | /* Provider can fixup or change mode timings before modeset occurs */ | |
64 | bool (*mode_fixup)(struct drm_crtc *crtc, | |
e811f5ae | 65 | const struct drm_display_mode *mode, |
f453ba04 DA |
66 | struct drm_display_mode *adjusted_mode); |
67 | /* Actually set the mode */ | |
5c3b82e2 CW |
68 | int (*mode_set)(struct drm_crtc *crtc, struct drm_display_mode *mode, |
69 | struct drm_display_mode *adjusted_mode, int x, int y, | |
70 | struct drm_framebuffer *old_fb); | |
2f324b42 | 71 | void (*mode_set_nofb)(struct drm_crtc *crtc); |
f453ba04 DA |
72 | |
73 | /* Move the crtc on the current fb to the given position *optional* */ | |
5c3b82e2 CW |
74 | int (*mode_set_base)(struct drm_crtc *crtc, int x, int y, |
75 | struct drm_framebuffer *old_fb); | |
1a7aba7f | 76 | int (*mode_set_base_atomic)(struct drm_crtc *crtc, |
413d45d3 | 77 | struct drm_framebuffer *fb, int x, int y, |
21c74a8e | 78 | enum mode_set_atomic); |
068143d3 DA |
79 | |
80 | /* reload the current crtc LUT */ | |
81 | void (*load_lut)(struct drm_crtc *crtc); | |
5c8d7171 AD |
82 | |
83 | /* disable crtc when not in use - more explicit than dpms off */ | |
84 | void (*disable)(struct drm_crtc *crtc); | |
c2fcd274 DV |
85 | |
86 | /* atomic helpers */ | |
87 | int (*atomic_check)(struct drm_crtc *crtc, | |
88 | struct drm_crtc_state *state); | |
89 | void (*atomic_begin)(struct drm_crtc *crtc); | |
90 | void (*atomic_flush)(struct drm_crtc *crtc); | |
f453ba04 DA |
91 | }; |
92 | ||
3b02ab88 LP |
93 | /** |
94 | * drm_encoder_helper_funcs - helper operations for encoders | |
95 | * @mode_fixup: try to fixup proposed mode for this connector | |
96 | * @mode_set: set this mode | |
97 | * | |
98 | * The helper operations are called by the mid-layer CRTC helper. | |
99 | */ | |
f453ba04 DA |
100 | struct drm_encoder_helper_funcs { |
101 | void (*dpms)(struct drm_encoder *encoder, int mode); | |
102 | void (*save)(struct drm_encoder *encoder); | |
103 | void (*restore)(struct drm_encoder *encoder); | |
104 | ||
105 | bool (*mode_fixup)(struct drm_encoder *encoder, | |
e811f5ae | 106 | const struct drm_display_mode *mode, |
f453ba04 DA |
107 | struct drm_display_mode *adjusted_mode); |
108 | void (*prepare)(struct drm_encoder *encoder); | |
109 | void (*commit)(struct drm_encoder *encoder); | |
110 | void (*mode_set)(struct drm_encoder *encoder, | |
111 | struct drm_display_mode *mode, | |
112 | struct drm_display_mode *adjusted_mode); | |
7bec756c | 113 | struct drm_crtc *(*get_crtc)(struct drm_encoder *encoder); |
f453ba04 DA |
114 | /* detect for DAC style encoders */ |
115 | enum drm_connector_status (*detect)(struct drm_encoder *encoder, | |
116 | struct drm_connector *connector); | |
a3a0544b DA |
117 | /* disable encoder when not in use - more explicit than dpms off */ |
118 | void (*disable)(struct drm_encoder *encoder); | |
f453ba04 DA |
119 | }; |
120 | ||
3b02ab88 LP |
121 | /** |
122 | * drm_connector_helper_funcs - helper operations for connectors | |
123 | * @get_modes: get mode list for this connector | |
f9b0e251 | 124 | * @mode_valid (optional): is this mode valid on the given connector? |
3b02ab88 LP |
125 | * |
126 | * The helper operations are called by the mid-layer CRTC helper. | |
127 | */ | |
f453ba04 DA |
128 | struct drm_connector_helper_funcs { |
129 | int (*get_modes)(struct drm_connector *connector); | |
0993f1d0 DL |
130 | enum drm_mode_status (*mode_valid)(struct drm_connector *connector, |
131 | struct drm_display_mode *mode); | |
f453ba04 DA |
132 | struct drm_encoder *(*best_encoder)(struct drm_connector *connector); |
133 | }; | |
134 | ||
f453ba04 | 135 | extern void drm_helper_disable_unused_functions(struct drm_device *dev); |
f453ba04 DA |
136 | extern int drm_crtc_helper_set_config(struct drm_mode_set *set); |
137 | extern bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, | |
138 | struct drm_display_mode *mode, | |
3c4fdcfb KH |
139 | int x, int y, |
140 | struct drm_framebuffer *old_fb); | |
f453ba04 | 141 | extern bool drm_helper_crtc_in_use(struct drm_crtc *crtc); |
f380ef86 | 142 | extern bool drm_helper_encoder_in_use(struct drm_encoder *encoder); |
f453ba04 | 143 | |
c9fb15f6 KP |
144 | extern void drm_helper_connector_dpms(struct drm_connector *connector, int mode); |
145 | ||
cfc1a062 DV |
146 | extern void drm_helper_move_panel_connectors_to_head(struct drm_device *); |
147 | ||
9fd93784 DV |
148 | extern void drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
149 | struct drm_mode_fb_cmd2 *mode_cmd); | |
f453ba04 DA |
150 | |
151 | static inline void drm_crtc_helper_add(struct drm_crtc *crtc, | |
152 | const struct drm_crtc_helper_funcs *funcs) | |
153 | { | |
154 | crtc->helper_private = (void *)funcs; | |
155 | } | |
156 | ||
157 | static inline void drm_encoder_helper_add(struct drm_encoder *encoder, | |
158 | const struct drm_encoder_helper_funcs *funcs) | |
159 | { | |
160 | encoder->helper_private = (void *)funcs; | |
161 | } | |
162 | ||
0b4c0f3f | 163 | static inline void drm_connector_helper_add(struct drm_connector *connector, |
f453ba04 DA |
164 | const struct drm_connector_helper_funcs *funcs) |
165 | { | |
166 | connector->helper_private = (void *)funcs; | |
167 | } | |
168 | ||
00d762cb | 169 | extern void drm_helper_resume_force_mode(struct drm_device *dev); |
8d754544 | 170 | |
2f324b42 DV |
171 | int drm_helper_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode, |
172 | struct drm_display_mode *adjusted_mode, int x, int y, | |
173 | struct drm_framebuffer *old_fb); | |
174 | int drm_helper_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y, | |
175 | struct drm_framebuffer *old_fb); | |
176 | ||
8d754544 DV |
177 | /* drm_probe_helper.c */ |
178 | extern int drm_helper_probe_single_connector_modes(struct drm_connector | |
179 | *connector, uint32_t maxX, | |
180 | uint32_t maxY); | |
b87577b7 DA |
181 | extern int drm_helper_probe_single_connector_modes_nomerge(struct drm_connector |
182 | *connector, | |
183 | uint32_t maxX, | |
184 | uint32_t maxY); | |
eb1f8e4f DA |
185 | extern void drm_kms_helper_poll_init(struct drm_device *dev); |
186 | extern void drm_kms_helper_poll_fini(struct drm_device *dev); | |
b8206d39 | 187 | extern bool drm_helper_hpd_irq_event(struct drm_device *dev); |
3d3683f0 | 188 | extern void drm_kms_helper_hotplug_event(struct drm_device *dev); |
fbf81762 DA |
189 | |
190 | extern void drm_kms_helper_poll_disable(struct drm_device *dev); | |
191 | extern void drm_kms_helper_poll_enable(struct drm_device *dev); | |
d0d110e0 | 192 | |
f453ba04 | 193 | #endif |