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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 | ||
6d11a2f0 TR |
42 | #include <drm/drm_crtc.h> |
43 | ||
21c74a8e JW |
44 | enum mode_set_atomic { |
45 | LEAVE_ATOMIC_MODE_SET, | |
46 | ENTER_ATOMIC_MODE_SET, | |
47 | }; | |
48 | ||
3b02ab88 | 49 | /** |
7552e7dd TR |
50 | * struct drm_crtc_helper_funcs - helper operations for CRTCs |
51 | * @dpms: set power state | |
52 | * @prepare: prepare the CRTC, called before @mode_set | |
53 | * @commit: commit changes to CRTC, called after @mode_set | |
54 | * @mode_fixup: try to fixup proposed mode for this CRTC | |
3b02ab88 | 55 | * @mode_set: set this mode |
7552e7dd TR |
56 | * @mode_set_nofb: set mode only (no scanout buffer attached) |
57 | * @mode_set_base: update the scanout buffer | |
58 | * @mode_set_base_atomic: non-blocking mode set (used for kgdb support) | |
59 | * @load_lut: load color palette | |
60 | * @disable: disable CRTC when no longer in use | |
ee0a89cf | 61 | * @enable: enable CRTC |
7552e7dd TR |
62 | * @atomic_check: check for validity of an atomic state |
63 | * @atomic_begin: begin atomic update | |
64 | * @atomic_flush: flush atomic update | |
3b02ab88 LP |
65 | * |
66 | * The helper operations are called by the mid-layer CRTC helper. | |
ee0a89cf DV |
67 | * |
68 | * Note that with atomic helpers @dpms, @prepare and @commit hooks are | |
69 | * deprecated. Used @enable and @disable instead exclusively. | |
70 | * | |
71 | * With legacy crtc helpers there's a big semantic difference between @disable | |
72 | * and the other hooks: @disable also needs to release any resources acquired in | |
73 | * @mode_set (like shared PLLs). | |
3b02ab88 | 74 | */ |
f453ba04 DA |
75 | struct drm_crtc_helper_funcs { |
76 | /* | |
77 | * Control power levels on the CRTC. If the mode passed in is | |
78 | * unsupported, the provider must use the next lowest power level. | |
79 | */ | |
80 | void (*dpms)(struct drm_crtc *crtc, int mode); | |
81 | void (*prepare)(struct drm_crtc *crtc); | |
82 | void (*commit)(struct drm_crtc *crtc); | |
83 | ||
84 | /* Provider can fixup or change mode timings before modeset occurs */ | |
85 | bool (*mode_fixup)(struct drm_crtc *crtc, | |
e811f5ae | 86 | const struct drm_display_mode *mode, |
f453ba04 DA |
87 | struct drm_display_mode *adjusted_mode); |
88 | /* Actually set the mode */ | |
5c3b82e2 CW |
89 | int (*mode_set)(struct drm_crtc *crtc, struct drm_display_mode *mode, |
90 | struct drm_display_mode *adjusted_mode, int x, int y, | |
91 | struct drm_framebuffer *old_fb); | |
c982bd90 | 92 | /* Actually set the mode for atomic helpers, optional */ |
2f324b42 | 93 | void (*mode_set_nofb)(struct drm_crtc *crtc); |
f453ba04 DA |
94 | |
95 | /* Move the crtc on the current fb to the given position *optional* */ | |
5c3b82e2 CW |
96 | int (*mode_set_base)(struct drm_crtc *crtc, int x, int y, |
97 | struct drm_framebuffer *old_fb); | |
1a7aba7f | 98 | int (*mode_set_base_atomic)(struct drm_crtc *crtc, |
413d45d3 | 99 | struct drm_framebuffer *fb, int x, int y, |
21c74a8e | 100 | enum mode_set_atomic); |
068143d3 DA |
101 | |
102 | /* reload the current crtc LUT */ | |
103 | void (*load_lut)(struct drm_crtc *crtc); | |
5c8d7171 | 104 | |
5c8d7171 | 105 | void (*disable)(struct drm_crtc *crtc); |
ee0a89cf | 106 | void (*enable)(struct drm_crtc *crtc); |
c2fcd274 DV |
107 | |
108 | /* atomic helpers */ | |
109 | int (*atomic_check)(struct drm_crtc *crtc, | |
110 | struct drm_crtc_state *state); | |
111 | void (*atomic_begin)(struct drm_crtc *crtc); | |
112 | void (*atomic_flush)(struct drm_crtc *crtc); | |
f453ba04 DA |
113 | }; |
114 | ||
3b02ab88 | 115 | /** |
7552e7dd TR |
116 | * struct drm_encoder_helper_funcs - helper operations for encoders |
117 | * @dpms: set power state | |
118 | * @save: save connector state | |
119 | * @restore: restore connector state | |
3b02ab88 | 120 | * @mode_fixup: try to fixup proposed mode for this connector |
7552e7dd TR |
121 | * @prepare: part of the disable sequence, called before the CRTC modeset |
122 | * @commit: called after the CRTC modeset | |
c982bd90 | 123 | * @mode_set: set this mode, optional for atomic helpers |
7552e7dd TR |
124 | * @get_crtc: return CRTC that the encoder is currently attached to |
125 | * @detect: connection status detection | |
126 | * @disable: disable encoder when not in use (overrides DPMS off) | |
ee0a89cf | 127 | * @enable: enable encoder |
4cd4df80 | 128 | * @atomic_check: check for validity of an atomic update |
3b02ab88 LP |
129 | * |
130 | * The helper operations are called by the mid-layer CRTC helper. | |
ee0a89cf DV |
131 | * |
132 | * Note that with atomic helpers @dpms, @prepare and @commit hooks are | |
133 | * deprecated. Used @enable and @disable instead exclusively. | |
134 | * | |
135 | * With legacy crtc helpers there's a big semantic difference between @disable | |
136 | * and the other hooks: @disable also needs to release any resources acquired in | |
137 | * @mode_set (like shared PLLs). | |
3b02ab88 | 138 | */ |
f453ba04 DA |
139 | struct drm_encoder_helper_funcs { |
140 | void (*dpms)(struct drm_encoder *encoder, int mode); | |
141 | void (*save)(struct drm_encoder *encoder); | |
142 | void (*restore)(struct drm_encoder *encoder); | |
143 | ||
144 | bool (*mode_fixup)(struct drm_encoder *encoder, | |
e811f5ae | 145 | const struct drm_display_mode *mode, |
f453ba04 DA |
146 | struct drm_display_mode *adjusted_mode); |
147 | void (*prepare)(struct drm_encoder *encoder); | |
148 | void (*commit)(struct drm_encoder *encoder); | |
149 | void (*mode_set)(struct drm_encoder *encoder, | |
150 | struct drm_display_mode *mode, | |
151 | struct drm_display_mode *adjusted_mode); | |
7bec756c | 152 | struct drm_crtc *(*get_crtc)(struct drm_encoder *encoder); |
f453ba04 DA |
153 | /* detect for DAC style encoders */ |
154 | enum drm_connector_status (*detect)(struct drm_encoder *encoder, | |
155 | struct drm_connector *connector); | |
a3a0544b | 156 | void (*disable)(struct drm_encoder *encoder); |
21773f16 | 157 | |
ee0a89cf | 158 | void (*enable)(struct drm_encoder *encoder); |
4cd4df80 TR |
159 | |
160 | /* atomic helpers */ | |
161 | int (*atomic_check)(struct drm_encoder *encoder, | |
162 | struct drm_crtc_state *crtc_state, | |
163 | struct drm_connector_state *conn_state); | |
f453ba04 DA |
164 | }; |
165 | ||
3b02ab88 | 166 | /** |
7552e7dd | 167 | * struct drm_connector_helper_funcs - helper operations for connectors |
3b02ab88 | 168 | * @get_modes: get mode list for this connector |
7552e7dd TR |
169 | * @mode_valid: is this mode valid on the given connector? (optional) |
170 | * @best_encoder: return the preferred encoder for this connector | |
3b02ab88 LP |
171 | * |
172 | * The helper operations are called by the mid-layer CRTC helper. | |
173 | */ | |
f453ba04 DA |
174 | struct drm_connector_helper_funcs { |
175 | int (*get_modes)(struct drm_connector *connector); | |
0993f1d0 DL |
176 | enum drm_mode_status (*mode_valid)(struct drm_connector *connector, |
177 | struct drm_display_mode *mode); | |
f453ba04 DA |
178 | struct drm_encoder *(*best_encoder)(struct drm_connector *connector); |
179 | }; | |
180 | ||
f453ba04 | 181 | extern void drm_helper_disable_unused_functions(struct drm_device *dev); |
f453ba04 DA |
182 | extern int drm_crtc_helper_set_config(struct drm_mode_set *set); |
183 | extern bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, | |
184 | struct drm_display_mode *mode, | |
3c4fdcfb KH |
185 | int x, int y, |
186 | struct drm_framebuffer *old_fb); | |
f453ba04 | 187 | extern bool drm_helper_crtc_in_use(struct drm_crtc *crtc); |
f380ef86 | 188 | extern bool drm_helper_encoder_in_use(struct drm_encoder *encoder); |
f453ba04 | 189 | |
c9fb15f6 KP |
190 | extern void drm_helper_connector_dpms(struct drm_connector *connector, int mode); |
191 | ||
cfc1a062 DV |
192 | extern void drm_helper_move_panel_connectors_to_head(struct drm_device *); |
193 | ||
9fd93784 DV |
194 | extern void drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
195 | struct drm_mode_fb_cmd2 *mode_cmd); | |
f453ba04 DA |
196 | |
197 | static inline void drm_crtc_helper_add(struct drm_crtc *crtc, | |
198 | const struct drm_crtc_helper_funcs *funcs) | |
199 | { | |
9a436ee6 | 200 | crtc->helper_private = funcs; |
f453ba04 DA |
201 | } |
202 | ||
203 | static inline void drm_encoder_helper_add(struct drm_encoder *encoder, | |
204 | const struct drm_encoder_helper_funcs *funcs) | |
205 | { | |
9a436ee6 | 206 | encoder->helper_private = funcs; |
f453ba04 DA |
207 | } |
208 | ||
0b4c0f3f | 209 | static inline void drm_connector_helper_add(struct drm_connector *connector, |
f453ba04 DA |
210 | const struct drm_connector_helper_funcs *funcs) |
211 | { | |
9a436ee6 | 212 | connector->helper_private = funcs; |
f453ba04 DA |
213 | } |
214 | ||
00d762cb | 215 | extern void drm_helper_resume_force_mode(struct drm_device *dev); |
8d754544 | 216 | |
2f324b42 DV |
217 | int drm_helper_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode, |
218 | struct drm_display_mode *adjusted_mode, int x, int y, | |
219 | struct drm_framebuffer *old_fb); | |
220 | int drm_helper_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y, | |
221 | struct drm_framebuffer *old_fb); | |
222 | ||
8d754544 DV |
223 | /* drm_probe_helper.c */ |
224 | extern int drm_helper_probe_single_connector_modes(struct drm_connector | |
225 | *connector, uint32_t maxX, | |
226 | uint32_t maxY); | |
b87577b7 DA |
227 | extern int drm_helper_probe_single_connector_modes_nomerge(struct drm_connector |
228 | *connector, | |
229 | uint32_t maxX, | |
230 | uint32_t maxY); | |
eb1f8e4f DA |
231 | extern void drm_kms_helper_poll_init(struct drm_device *dev); |
232 | extern void drm_kms_helper_poll_fini(struct drm_device *dev); | |
b8206d39 | 233 | extern bool drm_helper_hpd_irq_event(struct drm_device *dev); |
3d3683f0 | 234 | extern void drm_kms_helper_hotplug_event(struct drm_device *dev); |
fbf81762 DA |
235 | |
236 | extern void drm_kms_helper_poll_disable(struct drm_device *dev); | |
237 | extern void drm_kms_helper_poll_enable(struct drm_device *dev); | |
d0d110e0 | 238 | |
f453ba04 | 239 | #endif |