Commit | Line | Data |
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f453ba04 DA |
1 | /* |
2 | * Copyright (c) 2006-2008 Intel Corporation | |
3 | * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> | |
4 | * | |
5 | * DRM core CRTC related functions | |
6 | * | |
7 | * Permission to use, copy, modify, distribute, and sell this software and its | |
8 | * documentation for any purpose is hereby granted without fee, provided that | |
9 | * the above copyright notice appear in all copies and that both that copyright | |
10 | * notice and this permission notice appear in supporting documentation, and | |
11 | * that the name of the copyright holders not be used in advertising or | |
12 | * publicity pertaining to distribution of the software without specific, | |
13 | * written prior permission. The copyright holders make no representations | |
14 | * about the suitability of this software for any purpose. It is provided "as | |
15 | * is" without express or implied warranty. | |
16 | * | |
17 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
18 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
19 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
20 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
21 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
22 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
23 | * OF THIS SOFTWARE. | |
24 | * | |
25 | * Authors: | |
26 | * Keith Packard | |
27 | * Eric Anholt <eric@anholt.net> | |
28 | * Dave Airlie <airlied@linux.ie> | |
29 | * Jesse Barnes <jesse.barnes@intel.com> | |
30 | */ | |
31 | ||
ba6f5826 | 32 | #include <linux/kernel.h> |
2d1a8a48 | 33 | #include <linux/export.h> |
0603ba14 | 34 | #include <linux/moduleparam.h> |
2d1a8a48 | 35 | |
760285e7 | 36 | #include <drm/drmP.h> |
321ebf04 | 37 | #include <drm/drm_atomic.h> |
760285e7 DH |
38 | #include <drm/drm_crtc.h> |
39 | #include <drm/drm_fourcc.h> | |
40 | #include <drm/drm_crtc_helper.h> | |
41 | #include <drm/drm_fb_helper.h> | |
2f324b42 | 42 | #include <drm/drm_plane_helper.h> |
321ebf04 | 43 | #include <drm/drm_atomic_helper.h> |
760285e7 | 44 | #include <drm/drm_edid.h> |
f453ba04 | 45 | |
3150c7d0 DV |
46 | /** |
47 | * DOC: overview | |
48 | * | |
49 | * The CRTC modeset helper library provides a default set_config implementation | |
50 | * in drm_crtc_helper_set_config(). Plus a few other convenience functions using | |
51 | * the same callbacks which drivers can use to e.g. restore the modeset | |
52 | * configuration on resume with drm_helper_resume_force_mode(). | |
53 | * | |
2be94971 DV |
54 | * Note that this helper library doesn't track the current power state of CRTCs |
55 | * and encoders. It can call callbacks like ->dpms() even though the hardware is | |
56 | * already in the desired state. This deficiency has been fixed in the atomic | |
57 | * helpers. | |
58 | * | |
3150c7d0 DV |
59 | * The driver callbacks are mostly compatible with the atomic modeset helpers, |
60 | * except for the handling of the primary plane: Atomic helpers require that the | |
61 | * primary plane is implemented as a real standalone plane and not directly tied | |
62 | * to the CRTC state. For easier transition this library provides functions to | |
63 | * implement the old semantics required by the CRTC helpers using the new plane | |
64 | * and atomic helper callbacks. | |
65 | * | |
66 | * Drivers are strongly urged to convert to the atomic helpers (by way of first | |
67 | * converting to the plane helpers). New drivers must not use these functions | |
68 | * but need to implement the atomic interface instead, potentially using the | |
69 | * atomic helpers for that. | |
092d01da DV |
70 | * |
71 | * These legacy modeset helpers use the same function table structures as | |
72 | * all other modesetting helpers. See the documentation for struct | |
73 | * &drm_crtc_helper_funcs, struct &drm_encoder_helper_funcs and struct | |
74 | * &drm_connector_helper_funcs. | |
3150c7d0 | 75 | */ |
92b6f89f DV |
76 | MODULE_AUTHOR("David Airlie, Jesse Barnes"); |
77 | MODULE_DESCRIPTION("DRM KMS helper"); | |
78 | MODULE_LICENSE("GPL and additional rights"); | |
79 | ||
0d4ed4c8 DV |
80 | /** |
81 | * drm_helper_move_panel_connectors_to_head() - move panels to the front in the | |
82 | * connector list | |
83 | * @dev: drm device to operate on | |
84 | * | |
85 | * Some userspace presumes that the first connected connector is the main | |
86 | * display, where it's supposed to display e.g. the login screen. For | |
87 | * laptops, this should be the main panel. Use this function to sort all | |
88 | * (eDP/LVDS) panels to the front of the connector list, instead of | |
89 | * painstakingly trying to initialize them in the right order. | |
90 | */ | |
cfc1a062 DV |
91 | void drm_helper_move_panel_connectors_to_head(struct drm_device *dev) |
92 | { | |
93 | struct drm_connector *connector, *tmp; | |
94 | struct list_head panel_list; | |
95 | ||
96 | INIT_LIST_HEAD(&panel_list); | |
97 | ||
98 | list_for_each_entry_safe(connector, tmp, | |
99 | &dev->mode_config.connector_list, head) { | |
100 | if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS || | |
101 | connector->connector_type == DRM_MODE_CONNECTOR_eDP) | |
102 | list_move_tail(&connector->head, &panel_list); | |
103 | } | |
104 | ||
105 | list_splice(&panel_list, &dev->mode_config.connector_list); | |
106 | } | |
107 | EXPORT_SYMBOL(drm_helper_move_panel_connectors_to_head); | |
108 | ||
c9fb15f6 KP |
109 | /** |
110 | * drm_helper_encoder_in_use - check if a given encoder is in use | |
111 | * @encoder: encoder to check | |
112 | * | |
3fcc42e0 DV |
113 | * Checks whether @encoder is with the current mode setting output configuration |
114 | * in use by any connector. This doesn't mean that it is actually enabled since | |
115 | * the DPMS state is tracked separately. | |
c9fb15f6 | 116 | * |
3fcc42e0 DV |
117 | * Returns: |
118 | * True if @encoder is used, false otherwise. | |
c9fb15f6 KP |
119 | */ |
120 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) | |
121 | { | |
122 | struct drm_connector *connector; | |
123 | struct drm_device *dev = encoder->dev; | |
62ff94a5 | 124 | |
ba6f5826 SA |
125 | /* |
126 | * We can expect this mutex to be locked if we are not panicking. | |
127 | * Locking is currently fubar in the panic handler. | |
128 | */ | |
8d4ad9d4 | 129 | if (!oops_in_progress) { |
ba6f5826 | 130 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); |
8d4ad9d4 DA |
131 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
132 | } | |
ba6f5826 | 133 | |
9a9f5ce8 | 134 | drm_for_each_connector(connector, dev) |
c9fb15f6 KP |
135 | if (connector->encoder == encoder) |
136 | return true; | |
137 | return false; | |
138 | } | |
139 | EXPORT_SYMBOL(drm_helper_encoder_in_use); | |
140 | ||
f453ba04 DA |
141 | /** |
142 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config | |
143 | * @crtc: CRTC to check | |
144 | * | |
3fcc42e0 DV |
145 | * Checks whether @crtc is with the current mode setting output configuration |
146 | * in use by any connector. This doesn't mean that it is actually enabled since | |
147 | * the DPMS state is tracked separately. | |
f453ba04 | 148 | * |
3fcc42e0 DV |
149 | * Returns: |
150 | * True if @crtc is used, false otherwise. | |
f453ba04 DA |
151 | */ |
152 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) | |
153 | { | |
154 | struct drm_encoder *encoder; | |
155 | struct drm_device *dev = crtc->dev; | |
62ff94a5 | 156 | |
ba6f5826 SA |
157 | /* |
158 | * We can expect this mutex to be locked if we are not panicking. | |
159 | * Locking is currently fubar in the panic handler. | |
160 | */ | |
161 | if (!oops_in_progress) | |
162 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); | |
163 | ||
e4f62546 | 164 | drm_for_each_encoder(encoder, dev) |
c9fb15f6 | 165 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
f453ba04 DA |
166 | return true; |
167 | return false; | |
168 | } | |
169 | EXPORT_SYMBOL(drm_helper_crtc_in_use); | |
170 | ||
86a1b9d1 BS |
171 | static void |
172 | drm_encoder_disable(struct drm_encoder *encoder) | |
173 | { | |
be26a66d | 174 | const struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; |
86a1b9d1 | 175 | |
862e686c | 176 | drm_bridge_disable(encoder->bridge); |
3b336ec4 | 177 | |
86a1b9d1 BS |
178 | if (encoder_funcs->disable) |
179 | (*encoder_funcs->disable)(encoder); | |
180 | else | |
181 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); | |
3b336ec4 | 182 | |
862e686c | 183 | drm_bridge_post_disable(encoder->bridge); |
86a1b9d1 BS |
184 | } |
185 | ||
b182cc59 | 186 | static void __drm_helper_disable_unused_functions(struct drm_device *dev) |
f453ba04 DA |
187 | { |
188 | struct drm_encoder *encoder; | |
f453ba04 DA |
189 | struct drm_crtc *crtc; |
190 | ||
62ff94a5 DV |
191 | drm_warn_on_modeset_not_all_locked(dev); |
192 | ||
6295d607 | 193 | drm_for_each_encoder(encoder, dev) { |
92971021 | 194 | if (!drm_helper_encoder_in_use(encoder)) { |
86a1b9d1 | 195 | drm_encoder_disable(encoder); |
b5e6c1da | 196 | /* disconnect encoder from any connector */ |
9c552dd7 | 197 | encoder->crtc = NULL; |
a3a0544b | 198 | } |
f453ba04 DA |
199 | } |
200 | ||
6295d607 | 201 | drm_for_each_crtc(crtc, dev) { |
be26a66d | 202 | const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
f453ba04 DA |
203 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
204 | if (!crtc->enabled) { | |
5c8d7171 AD |
205 | if (crtc_funcs->disable) |
206 | (*crtc_funcs->disable)(crtc); | |
207 | else | |
208 | (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF); | |
f4510a27 | 209 | crtc->primary->fb = NULL; |
f453ba04 DA |
210 | } |
211 | } | |
212 | } | |
b182cc59 DV |
213 | |
214 | /** | |
215 | * drm_helper_disable_unused_functions - disable unused objects | |
216 | * @dev: DRM device | |
217 | * | |
218 | * This function walks through the entire mode setting configuration of @dev. It | |
2be94971 DV |
219 | * will remove any CRTC links of unused encoders and encoder links of |
220 | * disconnected connectors. Then it will disable all unused encoders and CRTCs | |
b182cc59 DV |
221 | * either by calling their disable callback if available or by calling their |
222 | * dpms callback with DRM_MODE_DPMS_OFF. | |
223 | */ | |
224 | void drm_helper_disable_unused_functions(struct drm_device *dev) | |
225 | { | |
226 | drm_modeset_lock_all(dev); | |
227 | __drm_helper_disable_unused_functions(dev); | |
228 | drm_modeset_unlock_all(dev); | |
229 | } | |
f453ba04 DA |
230 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); |
231 | ||
7bec756c JB |
232 | /* |
233 | * Check the CRTC we're going to map each output to vs. its current | |
234 | * CRTC. If they don't match, we have to disable the output and the CRTC | |
235 | * since the driver will have to re-route things. | |
236 | */ | |
237 | static void | |
238 | drm_crtc_prepare_encoders(struct drm_device *dev) | |
239 | { | |
be26a66d | 240 | const struct drm_encoder_helper_funcs *encoder_funcs; |
7bec756c JB |
241 | struct drm_encoder *encoder; |
242 | ||
6295d607 | 243 | drm_for_each_encoder(encoder, dev) { |
7bec756c JB |
244 | encoder_funcs = encoder->helper_private; |
245 | /* Disable unused encoders */ | |
246 | if (encoder->crtc == NULL) | |
86a1b9d1 | 247 | drm_encoder_disable(encoder); |
7bec756c JB |
248 | /* Disable encoders whose CRTC is about to change */ |
249 | if (encoder_funcs->get_crtc && | |
250 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) | |
86a1b9d1 | 251 | drm_encoder_disable(encoder); |
7bec756c JB |
252 | } |
253 | } | |
254 | ||
f453ba04 | 255 | /** |
0d4ed4c8 | 256 | * drm_crtc_helper_set_mode - internal helper to set a mode |
f453ba04 DA |
257 | * @crtc: CRTC to program |
258 | * @mode: mode to use | |
4c9287c6 AD |
259 | * @x: horizontal offset into the surface |
260 | * @y: vertical offset into the surface | |
0d4ed4c8 | 261 | * @old_fb: old framebuffer, for cleanup |
f453ba04 | 262 | * |
f453ba04 | 263 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance |
0d4ed4c8 DV |
264 | * to fixup or reject the mode prior to trying to set it. This is an internal |
265 | * helper that drivers could e.g. use to update properties that require the | |
266 | * entire output pipe to be disabled and re-enabled in a new configuration. For | |
267 | * example for changing whether audio is enabled on a hdmi link or for changing | |
268 | * panel fitter or dither attributes. It is also called by the | |
269 | * drm_crtc_helper_set_config() helper function to drive the mode setting | |
270 | * sequence. | |
f453ba04 | 271 | * |
3fcc42e0 DV |
272 | * Returns: |
273 | * True if the mode was set successfully, false otherwise. | |
f453ba04 DA |
274 | */ |
275 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, | |
276 | struct drm_display_mode *mode, | |
3c4fdcfb KH |
277 | int x, int y, |
278 | struct drm_framebuffer *old_fb) | |
f453ba04 DA |
279 | { |
280 | struct drm_device *dev = crtc->dev; | |
5a27528a | 281 | struct drm_display_mode *adjusted_mode, saved_mode, saved_hwmode; |
be26a66d JN |
282 | const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
283 | const struct drm_encoder_helper_funcs *encoder_funcs; | |
f453ba04 | 284 | int saved_x, saved_y; |
7e99acdc | 285 | bool saved_enabled; |
f453ba04 DA |
286 | struct drm_encoder *encoder; |
287 | bool ret = true; | |
288 | ||
62ff94a5 DV |
289 | drm_warn_on_modeset_not_all_locked(dev); |
290 | ||
7e99acdc | 291 | saved_enabled = crtc->enabled; |
f453ba04 | 292 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
f453ba04 DA |
293 | if (!crtc->enabled) |
294 | return true; | |
295 | ||
021a8455 | 296 | adjusted_mode = drm_mode_duplicate(dev, mode); |
7e99acdc IH |
297 | if (!adjusted_mode) { |
298 | crtc->enabled = saved_enabled; | |
6bfc56aa | 299 | return false; |
7e99acdc | 300 | } |
021a8455 | 301 | |
f453ba04 | 302 | saved_mode = crtc->mode; |
5a27528a | 303 | saved_hwmode = crtc->hwmode; |
f453ba04 DA |
304 | saved_x = crtc->x; |
305 | saved_y = crtc->y; | |
306 | ||
307 | /* Update crtc values up front so the driver can rely on them for mode | |
308 | * setting. | |
309 | */ | |
310 | crtc->mode = *mode; | |
311 | crtc->x = x; | |
312 | crtc->y = y; | |
313 | ||
f453ba04 DA |
314 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
315 | * adjust it according to limitations or connector properties, and also | |
316 | * a chance to reject the mode entirely. | |
317 | */ | |
6295d607 | 318 | drm_for_each_encoder(encoder, dev) { |
f453ba04 DA |
319 | |
320 | if (encoder->crtc != crtc) | |
321 | continue; | |
3b336ec4 | 322 | |
862e686c AT |
323 | ret = drm_bridge_mode_fixup(encoder->bridge, |
324 | mode, adjusted_mode); | |
325 | if (!ret) { | |
326 | DRM_DEBUG_KMS("Bridge fixup failed\n"); | |
327 | goto done; | |
3b336ec4 SP |
328 | } |
329 | ||
f453ba04 DA |
330 | encoder_funcs = encoder->helper_private; |
331 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, | |
332 | adjusted_mode))) { | |
836e53d7 | 333 | DRM_DEBUG_KMS("Encoder fixup failed\n"); |
f453ba04 DA |
334 | goto done; |
335 | } | |
336 | } | |
337 | ||
338 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { | |
836e53d7 | 339 | DRM_DEBUG_KMS("CRTC fixup failed\n"); |
f453ba04 DA |
340 | goto done; |
341 | } | |
fa3ab4c2 | 342 | DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name); |
f453ba04 | 343 | |
5a27528a DS |
344 | crtc->hwmode = *adjusted_mode; |
345 | ||
f453ba04 | 346 | /* Prepare the encoders and CRTCs before setting the mode. */ |
6295d607 | 347 | drm_for_each_encoder(encoder, dev) { |
f453ba04 DA |
348 | |
349 | if (encoder->crtc != crtc) | |
350 | continue; | |
3b336ec4 | 351 | |
862e686c | 352 | drm_bridge_disable(encoder->bridge); |
3b336ec4 | 353 | |
f453ba04 DA |
354 | encoder_funcs = encoder->helper_private; |
355 | /* Disable the encoders as the first thing we do. */ | |
356 | encoder_funcs->prepare(encoder); | |
3b336ec4 | 357 | |
862e686c | 358 | drm_bridge_post_disable(encoder->bridge); |
f453ba04 DA |
359 | } |
360 | ||
7bec756c JB |
361 | drm_crtc_prepare_encoders(dev); |
362 | ||
f453ba04 DA |
363 | crtc_funcs->prepare(crtc); |
364 | ||
365 | /* Set up the DPLL and any encoders state that needs to adjust or depend | |
366 | * on the DPLL. | |
367 | */ | |
5c3b82e2 CW |
368 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
369 | if (!ret) | |
370 | goto done; | |
f453ba04 | 371 | |
6295d607 | 372 | drm_for_each_encoder(encoder, dev) { |
f453ba04 DA |
373 | |
374 | if (encoder->crtc != crtc) | |
375 | continue; | |
376 | ||
9440106b | 377 | DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n", |
83a8cfd3 | 378 | encoder->base.id, encoder->name, |
9440106b | 379 | mode->base.id, mode->name); |
f453ba04 DA |
380 | encoder_funcs = encoder->helper_private; |
381 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); | |
3b336ec4 | 382 | |
862e686c | 383 | drm_bridge_mode_set(encoder->bridge, mode, adjusted_mode); |
f453ba04 DA |
384 | } |
385 | ||
386 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ | |
387 | crtc_funcs->commit(crtc); | |
388 | ||
6295d607 | 389 | drm_for_each_encoder(encoder, dev) { |
f453ba04 DA |
390 | |
391 | if (encoder->crtc != crtc) | |
392 | continue; | |
393 | ||
862e686c | 394 | drm_bridge_pre_enable(encoder->bridge); |
3b336ec4 | 395 | |
f453ba04 DA |
396 | encoder_funcs = encoder->helper_private; |
397 | encoder_funcs->commit(encoder); | |
398 | ||
862e686c | 399 | drm_bridge_enable(encoder->bridge); |
f453ba04 DA |
400 | } |
401 | ||
27641c3f MK |
402 | /* Calculate and store various constants which |
403 | * are later needed by vblank and swap-completion | |
404 | * timestamping. They are derived from true hwmode. | |
405 | */ | |
545cdd55 | 406 | drm_calc_timestamping_constants(crtc, &crtc->hwmode); |
27641c3f | 407 | |
f453ba04 DA |
408 | /* FIXME: add subpixel order */ |
409 | done: | |
021a8455 | 410 | drm_mode_destroy(dev, adjusted_mode); |
f453ba04 | 411 | if (!ret) { |
7e99acdc | 412 | crtc->enabled = saved_enabled; |
f453ba04 | 413 | crtc->mode = saved_mode; |
5a27528a | 414 | crtc->hwmode = saved_hwmode; |
f453ba04 DA |
415 | crtc->x = saved_x; |
416 | crtc->y = saved_y; | |
417 | } | |
418 | ||
419 | return ret; | |
420 | } | |
421 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); | |
422 | ||
a74591d7 | 423 | static void |
6eebd6bb CW |
424 | drm_crtc_helper_disable(struct drm_crtc *crtc) |
425 | { | |
426 | struct drm_device *dev = crtc->dev; | |
427 | struct drm_connector *connector; | |
428 | struct drm_encoder *encoder; | |
429 | ||
430 | /* Decouple all encoders and their attached connectors from this crtc */ | |
6295d607 | 431 | drm_for_each_encoder(encoder, dev) { |
6eebd6bb CW |
432 | if (encoder->crtc != crtc) |
433 | continue; | |
434 | ||
6295d607 | 435 | drm_for_each_connector(connector, dev) { |
6eebd6bb CW |
436 | if (connector->encoder != encoder) |
437 | continue; | |
438 | ||
439 | connector->encoder = NULL; | |
a6ad6230 TR |
440 | |
441 | /* | |
442 | * drm_helper_disable_unused_functions() ought to be | |
443 | * doing this, but since we've decoupled the encoder | |
444 | * from the connector above, the required connection | |
445 | * between them is henceforth no longer available. | |
446 | */ | |
447 | connector->dpms = DRM_MODE_DPMS_OFF; | |
6eebd6bb CW |
448 | } |
449 | } | |
450 | ||
b182cc59 | 451 | __drm_helper_disable_unused_functions(dev); |
6eebd6bb CW |
452 | } |
453 | ||
f453ba04 DA |
454 | /** |
455 | * drm_crtc_helper_set_config - set a new config from userspace | |
0d4ed4c8 | 456 | * @set: mode set configuration |
f453ba04 | 457 | * |
2be94971 DV |
458 | * The drm_crtc_helper_set_config() helper function implements the set_config |
459 | * callback of struct &drm_crtc_funcs for drivers using the legacy CRTC helpers. | |
460 | * | |
461 | * It first tries to locate the best encoder for each connector by calling the | |
462 | * connector ->best_encoder() (struct &drm_connector_helper_funcs) helper | |
463 | * operation. | |
464 | * | |
465 | * After locating the appropriate encoders, the helper function will call the | |
466 | * mode_fixup encoder and CRTC helper operations to adjust the requested mode, | |
467 | * or reject it completely in which case an error will be returned to the | |
468 | * application. If the new configuration after mode adjustment is identical to | |
469 | * the current configuration the helper function will return without performing | |
470 | * any other operation. | |
471 | * | |
472 | * If the adjusted mode is identical to the current mode but changes to the | |
473 | * frame buffer need to be applied, the drm_crtc_helper_set_config() function | |
474 | * will call the CRTC ->mode_set_base() (struct &drm_crtc_helper_funcs) helper | |
475 | * operation. | |
476 | * | |
477 | * If the adjusted mode differs from the current mode, or if the | |
478 | * ->mode_set_base() helper operation is not provided, the helper function | |
479 | * performs a full mode set sequence by calling the ->prepare(), ->mode_set() | |
480 | * and ->commit() CRTC and encoder helper operations, in that order. | |
481 | * Alternatively it can also use the dpms and disable helper operations. For | |
482 | * details see struct &drm_crtc_helper_funcs and struct | |
483 | * &drm_encoder_helper_funcs. | |
484 | * | |
485 | * This function is deprecated. New drivers must implement atomic modeset | |
486 | * support, for which this function is unsuitable. Instead drivers should use | |
487 | * drm_atomic_helper_set_config(). | |
f453ba04 | 488 | * |
3fcc42e0 DV |
489 | * Returns: |
490 | * Returns 0 on success, negative errno numbers on failure. | |
f453ba04 DA |
491 | */ |
492 | int drm_crtc_helper_set_config(struct drm_mode_set *set) | |
493 | { | |
494 | struct drm_device *dev; | |
02ee4e94 | 495 | struct drm_crtc *new_crtc; |
e67aae79 | 496 | struct drm_encoder *save_encoders, *new_encoder, *encoder; |
4cb72b17 JB |
497 | bool mode_changed = false; /* if true do a full mode set */ |
498 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ | |
e67aae79 | 499 | struct drm_connector *save_connectors, *connector; |
f453ba04 | 500 | int count = 0, ro, fail = 0; |
be26a66d | 501 | const struct drm_crtc_helper_funcs *crtc_funcs; |
c5006cfe | 502 | struct drm_mode_set save_set; |
4a1b0714 | 503 | int ret; |
bf9dc102 | 504 | int i; |
f453ba04 | 505 | |
58367ed6 | 506 | DRM_DEBUG_KMS("\n"); |
f453ba04 | 507 | |
e58de880 DV |
508 | BUG_ON(!set); |
509 | BUG_ON(!set->crtc); | |
510 | BUG_ON(!set->crtc->helper_private); | |
f453ba04 | 511 | |
e58de880 DV |
512 | /* Enforce sane interface api - has been abused by the fb helper. */ |
513 | BUG_ON(!set->mode && set->fb); | |
514 | BUG_ON(set->fb && set->num_connectors == 0); | |
f453ba04 DA |
515 | |
516 | crtc_funcs = set->crtc->helper_private; | |
517 | ||
ede3ff52 CW |
518 | if (!set->mode) |
519 | set->fb = NULL; | |
520 | ||
9440106b | 521 | if (set->fb) { |
fa3ab4c2 VS |
522 | DRM_DEBUG_KMS("[CRTC:%d:%s] [FB:%d] #connectors=%d (x y) (%i %i)\n", |
523 | set->crtc->base.id, set->crtc->name, | |
524 | set->fb->base.id, | |
525 | (int)set->num_connectors, set->x, set->y); | |
9440106b | 526 | } else { |
fa3ab4c2 VS |
527 | DRM_DEBUG_KMS("[CRTC:%d:%s] [NOFB]\n", |
528 | set->crtc->base.id, set->crtc->name); | |
a74591d7 TR |
529 | drm_crtc_helper_disable(set->crtc); |
530 | return 0; | |
9440106b | 531 | } |
f453ba04 DA |
532 | |
533 | dev = set->crtc->dev; | |
534 | ||
62ff94a5 DV |
535 | drm_warn_on_modeset_not_all_locked(dev); |
536 | ||
02ee4e94 IH |
537 | /* |
538 | * Allocate space for the backup of all (non-pointer) encoder and | |
539 | * connector data. | |
540 | */ | |
e67aae79 MM |
541 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
542 | sizeof(struct drm_encoder), GFP_KERNEL); | |
02ee4e94 | 543 | if (!save_encoders) |
f453ba04 | 544 | return -ENOMEM; |
f453ba04 | 545 | |
e67aae79 MM |
546 | save_connectors = kzalloc(dev->mode_config.num_connector * |
547 | sizeof(struct drm_connector), GFP_KERNEL); | |
548 | if (!save_connectors) { | |
e67aae79 MM |
549 | kfree(save_encoders); |
550 | return -ENOMEM; | |
551 | } | |
552 | ||
02ee4e94 IH |
553 | /* |
554 | * Copy data. Note that driver private data is not affected. | |
e67aae79 MM |
555 | * Should anything bad happen only the expected state is |
556 | * restored, not the drivers personal bookkeeping. | |
557 | */ | |
e67aae79 | 558 | count = 0; |
6295d607 | 559 | drm_for_each_encoder(encoder, dev) { |
e67aae79 MM |
560 | save_encoders[count++] = *encoder; |
561 | } | |
562 | ||
563 | count = 0; | |
6295d607 | 564 | drm_for_each_connector(connector, dev) { |
e67aae79 MM |
565 | save_connectors[count++] = *connector; |
566 | } | |
567 | ||
c5006cfe JB |
568 | save_set.crtc = set->crtc; |
569 | save_set.mode = &set->crtc->mode; | |
570 | save_set.x = set->crtc->x; | |
571 | save_set.y = set->crtc->y; | |
f4510a27 | 572 | save_set.fb = set->crtc->primary->fb; |
c5006cfe | 573 | |
f453ba04 DA |
574 | /* We should be able to check here if the fb has the same properties |
575 | * and then just flip_or_move it */ | |
f4510a27 | 576 | if (set->crtc->primary->fb != set->fb) { |
712531bf | 577 | /* If we have no fb then treat it as a full mode set */ |
f4510a27 | 578 | if (set->crtc->primary->fb == NULL) { |
58367ed6 | 579 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
712531bf | 580 | mode_changed = true; |
4cb72b17 JB |
581 | } else if (set->fb == NULL) { |
582 | mode_changed = true; | |
ce83adf7 | 583 | } else if (set->fb->pixel_format != |
f4510a27 | 584 | set->crtc->primary->fb->pixel_format) { |
ce83adf7 | 585 | mode_changed = true; |
8dff4742 | 586 | } else |
712531bf | 587 | fb_changed = true; |
f453ba04 DA |
588 | } |
589 | ||
590 | if (set->x != set->crtc->x || set->y != set->crtc->y) | |
712531bf | 591 | fb_changed = true; |
f453ba04 DA |
592 | |
593 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { | |
58367ed6 | 594 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
f453ba04 DA |
595 | drm_mode_debug_printmodeline(&set->crtc->mode); |
596 | drm_mode_debug_printmodeline(set->mode); | |
712531bf | 597 | mode_changed = true; |
f453ba04 DA |
598 | } |
599 | ||
600 | /* a) traverse passed in connector list and get encoders for them */ | |
601 | count = 0; | |
6295d607 | 602 | drm_for_each_connector(connector, dev) { |
be26a66d | 603 | const struct drm_connector_helper_funcs *connector_funcs = |
f453ba04 | 604 | connector->helper_private; |
f453ba04 DA |
605 | new_encoder = connector->encoder; |
606 | for (ro = 0; ro < set->num_connectors; ro++) { | |
607 | if (set->connectors[ro] == connector) { | |
608 | new_encoder = connector_funcs->best_encoder(connector); | |
609 | /* if we can't get an encoder for a connector | |
610 | we are setting now - then fail */ | |
611 | if (new_encoder == NULL) | |
612 | /* don't break so fail path works correct */ | |
613 | fail = 1; | |
25f397a4 DV |
614 | |
615 | if (connector->dpms != DRM_MODE_DPMS_ON) { | |
616 | DRM_DEBUG_KMS("connector dpms not on, full mode switch\n"); | |
617 | mode_changed = true; | |
618 | } | |
177cf92d DV |
619 | |
620 | break; | |
f453ba04 DA |
621 | } |
622 | } | |
623 | ||
624 | if (new_encoder != connector->encoder) { | |
58367ed6 | 625 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
712531bf | 626 | mode_changed = true; |
ff846ab7 MM |
627 | /* If the encoder is reused for another connector, then |
628 | * the appropriate crtc will be set later. | |
629 | */ | |
ff6fdbed MM |
630 | if (connector->encoder) |
631 | connector->encoder->crtc = NULL; | |
f453ba04 DA |
632 | connector->encoder = new_encoder; |
633 | } | |
634 | } | |
635 | ||
636 | if (fail) { | |
637 | ret = -EINVAL; | |
e67aae79 | 638 | goto fail; |
f453ba04 DA |
639 | } |
640 | ||
641 | count = 0; | |
6295d607 | 642 | drm_for_each_connector(connector, dev) { |
f453ba04 DA |
643 | if (!connector->encoder) |
644 | continue; | |
645 | ||
f453ba04 DA |
646 | if (connector->encoder->crtc == set->crtc) |
647 | new_crtc = NULL; | |
648 | else | |
649 | new_crtc = connector->encoder->crtc; | |
650 | ||
651 | for (ro = 0; ro < set->num_connectors; ro++) { | |
652 | if (set->connectors[ro] == connector) | |
653 | new_crtc = set->crtc; | |
654 | } | |
7bec756c JB |
655 | |
656 | /* Make sure the new CRTC will work with the encoder */ | |
657 | if (new_crtc && | |
658 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { | |
659 | ret = -EINVAL; | |
e67aae79 | 660 | goto fail; |
7bec756c | 661 | } |
f453ba04 | 662 | if (new_crtc != connector->encoder->crtc) { |
58367ed6 | 663 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
712531bf | 664 | mode_changed = true; |
f453ba04 DA |
665 | connector->encoder->crtc = new_crtc; |
666 | } | |
9440106b | 667 | if (new_crtc) { |
fa3ab4c2 VS |
668 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d:%s]\n", |
669 | connector->base.id, connector->name, | |
670 | new_crtc->base.id, new_crtc->name); | |
9440106b JG |
671 | } else { |
672 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n", | |
fa3ab4c2 | 673 | connector->base.id, connector->name); |
9440106b | 674 | } |
f453ba04 DA |
675 | } |
676 | ||
677 | /* mode_set_base is not a required function */ | |
712531bf JB |
678 | if (fb_changed && !crtc_funcs->mode_set_base) |
679 | mode_changed = true; | |
f453ba04 | 680 | |
712531bf | 681 | if (mode_changed) { |
48b1f5dd | 682 | if (drm_helper_crtc_in_use(set->crtc)) { |
58367ed6 ZY |
683 | DRM_DEBUG_KMS("attempting to set mode from" |
684 | " userspace\n"); | |
f453ba04 | 685 | drm_mode_debug_printmodeline(set->mode); |
f4510a27 | 686 | set->crtc->primary->fb = set->fb; |
f453ba04 | 687 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
3c4fdcfb | 688 | set->x, set->y, |
bec2eac3 | 689 | save_set.fb)) { |
fa3ab4c2 VS |
690 | DRM_ERROR("failed to set mode on [CRTC:%d:%s]\n", |
691 | set->crtc->base.id, set->crtc->name); | |
f4510a27 | 692 | set->crtc->primary->fb = save_set.fb; |
f453ba04 | 693 | ret = -EINVAL; |
e67aae79 | 694 | goto fail; |
f453ba04 | 695 | } |
25f397a4 DV |
696 | DRM_DEBUG_KMS("Setting connector DPMS state to on\n"); |
697 | for (i = 0; i < set->num_connectors; i++) { | |
698 | DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id, | |
25933820 | 699 | set->connectors[i]->name); |
25f397a4 DV |
700 | set->connectors[i]->funcs->dpms(set->connectors[i], DRM_MODE_DPMS_ON); |
701 | } | |
f453ba04 | 702 | } |
b182cc59 | 703 | __drm_helper_disable_unused_functions(dev); |
712531bf | 704 | } else if (fb_changed) { |
9b1596af BS |
705 | set->crtc->x = set->x; |
706 | set->crtc->y = set->y; | |
f4510a27 | 707 | set->crtc->primary->fb = set->fb; |
5c3b82e2 | 708 | ret = crtc_funcs->mode_set_base(set->crtc, |
bec2eac3 | 709 | set->x, set->y, save_set.fb); |
0ba41e44 | 710 | if (ret != 0) { |
fbce4064 IH |
711 | set->crtc->x = save_set.x; |
712 | set->crtc->y = save_set.y; | |
f4510a27 | 713 | set->crtc->primary->fb = save_set.fb; |
e67aae79 | 714 | goto fail; |
0ba41e44 | 715 | } |
f453ba04 DA |
716 | } |
717 | ||
e67aae79 | 718 | kfree(save_connectors); |
f453ba04 | 719 | kfree(save_encoders); |
f453ba04 DA |
720 | return 0; |
721 | ||
e67aae79 MM |
722 | fail: |
723 | /* Restore all previous data. */ | |
e67aae79 | 724 | count = 0; |
6295d607 | 725 | drm_for_each_encoder(encoder, dev) { |
e67aae79 | 726 | *encoder = save_encoders[count++]; |
e62fb64e | 727 | } |
e67aae79 | 728 | |
f453ba04 | 729 | count = 0; |
6295d607 | 730 | drm_for_each_connector(connector, dev) { |
e67aae79 | 731 | *connector = save_connectors[count++]; |
f453ba04 | 732 | } |
e67aae79 | 733 | |
c5006cfe JB |
734 | /* Try to restore the config */ |
735 | if (mode_changed && | |
736 | !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x, | |
737 | save_set.y, save_set.fb)) | |
738 | DRM_ERROR("failed to restore config after modeset failure\n"); | |
739 | ||
e67aae79 | 740 | kfree(save_connectors); |
f453ba04 DA |
741 | kfree(save_encoders); |
742 | return ret; | |
743 | } | |
744 | EXPORT_SYMBOL(drm_crtc_helper_set_config); | |
745 | ||
c9fb15f6 KP |
746 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
747 | { | |
748 | int dpms = DRM_MODE_DPMS_OFF; | |
749 | struct drm_connector *connector; | |
750 | struct drm_device *dev = encoder->dev; | |
751 | ||
9a9f5ce8 | 752 | drm_for_each_connector(connector, dev) |
c9fb15f6 KP |
753 | if (connector->encoder == encoder) |
754 | if (connector->dpms < dpms) | |
755 | dpms = connector->dpms; | |
756 | return dpms; | |
757 | } | |
758 | ||
3b336ec4 SP |
759 | /* Helper which handles bridge ordering around encoder dpms */ |
760 | static void drm_helper_encoder_dpms(struct drm_encoder *encoder, int mode) | |
761 | { | |
762 | struct drm_bridge *bridge = encoder->bridge; | |
be26a66d | 763 | const struct drm_encoder_helper_funcs *encoder_funcs; |
3b336ec4 | 764 | |
862e686c AT |
765 | if (mode == DRM_MODE_DPMS_ON) |
766 | drm_bridge_pre_enable(bridge); | |
767 | else | |
768 | drm_bridge_disable(bridge); | |
3b336ec4 SP |
769 | |
770 | encoder_funcs = encoder->helper_private; | |
771 | if (encoder_funcs->dpms) | |
772 | encoder_funcs->dpms(encoder, mode); | |
773 | ||
862e686c AT |
774 | if (mode == DRM_MODE_DPMS_ON) |
775 | drm_bridge_enable(bridge); | |
776 | else | |
777 | drm_bridge_post_disable(bridge); | |
3b336ec4 SP |
778 | } |
779 | ||
c9fb15f6 KP |
780 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) |
781 | { | |
782 | int dpms = DRM_MODE_DPMS_OFF; | |
783 | struct drm_connector *connector; | |
784 | struct drm_device *dev = crtc->dev; | |
785 | ||
9a9f5ce8 | 786 | drm_for_each_connector(connector, dev) |
c9fb15f6 KP |
787 | if (connector->encoder && connector->encoder->crtc == crtc) |
788 | if (connector->dpms < dpms) | |
789 | dpms = connector->dpms; | |
790 | return dpms; | |
791 | } | |
792 | ||
793 | /** | |
0d4ed4c8 DV |
794 | * drm_helper_connector_dpms() - connector dpms helper implementation |
795 | * @connector: affected connector | |
796 | * @mode: DPMS mode | |
c9fb15f6 | 797 | * |
2be94971 DV |
798 | * The drm_helper_connector_dpms() helper function implements the ->dpms() |
799 | * callback of struct &drm_connector_funcs for drivers using the legacy CRTC helpers. | |
800 | * | |
801 | * This is the main helper function provided by the CRTC helper framework for | |
0d4ed4c8 | 802 | * implementing the DPMS connector attribute. It computes the new desired DPMS |
2be94971 DV |
803 | * state for all encoders and CRTCs in the output mesh and calls the ->dpms() |
804 | * callbacks provided by the driver in struct &drm_crtc_helper_funcs and struct | |
805 | * &drm_encoder_helper_funcs appropriately. | |
806 | * | |
807 | * This function is deprecated. New drivers must implement atomic modeset | |
808 | * support, for which this function is unsuitable. Instead drivers should use | |
809 | * drm_atomic_helper_connector_dpms(). | |
9a69a9ac ML |
810 | * |
811 | * Returns: | |
812 | * Always returns 0. | |
c9fb15f6 | 813 | */ |
9a69a9ac | 814 | int drm_helper_connector_dpms(struct drm_connector *connector, int mode) |
c9fb15f6 KP |
815 | { |
816 | struct drm_encoder *encoder = connector->encoder; | |
817 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; | |
3b336ec4 | 818 | int old_dpms, encoder_dpms = DRM_MODE_DPMS_OFF; |
c9fb15f6 KP |
819 | |
820 | if (mode == connector->dpms) | |
9a69a9ac | 821 | return 0; |
c9fb15f6 KP |
822 | |
823 | old_dpms = connector->dpms; | |
824 | connector->dpms = mode; | |
825 | ||
3b336ec4 SP |
826 | if (encoder) |
827 | encoder_dpms = drm_helper_choose_encoder_dpms(encoder); | |
828 | ||
c9fb15f6 KP |
829 | /* from off to on, do crtc then encoder */ |
830 | if (mode < old_dpms) { | |
831 | if (crtc) { | |
be26a66d | 832 | const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
c9fb15f6 KP |
833 | if (crtc_funcs->dpms) |
834 | (*crtc_funcs->dpms) (crtc, | |
835 | drm_helper_choose_crtc_dpms(crtc)); | |
836 | } | |
3b336ec4 SP |
837 | if (encoder) |
838 | drm_helper_encoder_dpms(encoder, encoder_dpms); | |
c9fb15f6 KP |
839 | } |
840 | ||
841 | /* from on to off, do encoder then crtc */ | |
842 | if (mode > old_dpms) { | |
3b336ec4 SP |
843 | if (encoder) |
844 | drm_helper_encoder_dpms(encoder, encoder_dpms); | |
c9fb15f6 | 845 | if (crtc) { |
be26a66d | 846 | const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
c9fb15f6 KP |
847 | if (crtc_funcs->dpms) |
848 | (*crtc_funcs->dpms) (crtc, | |
849 | drm_helper_choose_crtc_dpms(crtc)); | |
850 | } | |
851 | } | |
852 | ||
9a69a9ac | 853 | return 0; |
c9fb15f6 KP |
854 | } |
855 | EXPORT_SYMBOL(drm_helper_connector_dpms); | |
856 | ||
3fcc42e0 DV |
857 | /** |
858 | * drm_helper_mode_fill_fb_struct - fill out framebuffer metadata | |
859 | * @fb: drm_framebuffer object to fill out | |
860 | * @mode_cmd: metadata from the userspace fb creation request | |
861 | * | |
862 | * This helper can be used in a drivers fb_create callback to pre-fill the fb's | |
863 | * metadata fields. | |
864 | */ | |
9fd93784 | 865 | void drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
1eb83451 | 866 | const struct drm_mode_fb_cmd2 *mode_cmd) |
f453ba04 | 867 | { |
01f2c773 VS |
868 | int i; |
869 | ||
f453ba04 DA |
870 | fb->width = mode_cmd->width; |
871 | fb->height = mode_cmd->height; | |
01f2c773 VS |
872 | for (i = 0; i < 4; i++) { |
873 | fb->pitches[i] = mode_cmd->pitches[i]; | |
874 | fb->offsets[i] = mode_cmd->offsets[i]; | |
e3eb3250 | 875 | fb->modifier[i] = mode_cmd->modifier[i]; |
01f2c773 | 876 | } |
248dbc23 | 877 | drm_fb_get_bpp_depth(mode_cmd->pixel_format, &fb->depth, |
308e5bcb JB |
878 | &fb->bits_per_pixel); |
879 | fb->pixel_format = mode_cmd->pixel_format; | |
d980b183 | 880 | fb->flags = mode_cmd->flags; |
f453ba04 DA |
881 | } |
882 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); | |
883 | ||
aa4cd910 DV |
884 | /** |
885 | * drm_helper_resume_force_mode - force-restore mode setting configuration | |
886 | * @dev: drm_device which should be restored | |
887 | * | |
888 | * Drivers which use the mode setting helpers can use this function to | |
889 | * force-restore the mode setting configuration e.g. on resume or when something | |
890 | * else might have trampled over the hw state (like some overzealous old BIOSen | |
891 | * tended to do). | |
00d762cb DV |
892 | * |
893 | * This helper doesn't provide a error return value since restoring the old | |
894 | * config should never fail due to resource allocation issues since the driver | |
895 | * has successfully set the restored configuration already. Hence this should | |
896 | * boil down to the equivalent of a few dpms on calls, which also don't provide | |
897 | * an error code. | |
898 | * | |
899 | * Drivers where simply restoring an old configuration again might fail (e.g. | |
900 | * due to slight differences in allocating shared resources when the | |
901 | * configuration is restored in a different order than when userspace set it up) | |
902 | * need to use their own restore logic. | |
14942760 TR |
903 | * |
904 | * This function is deprecated. New drivers should implement atomic mode- | |
905 | * setting and use the atomic suspend/resume helpers. | |
906 | * | |
907 | * See also: | |
908 | * drm_atomic_helper_suspend(), drm_atomic_helper_resume() | |
aa4cd910 | 909 | */ |
00d762cb | 910 | void drm_helper_resume_force_mode(struct drm_device *dev) |
f453ba04 DA |
911 | { |
912 | struct drm_crtc *crtc; | |
89347bb8 | 913 | struct drm_encoder *encoder; |
be26a66d | 914 | const struct drm_crtc_helper_funcs *crtc_funcs; |
00d762cb DV |
915 | int encoder_dpms; |
916 | bool ret; | |
f453ba04 | 917 | |
3ea87855 | 918 | drm_modeset_lock_all(dev); |
6295d607 | 919 | drm_for_each_crtc(crtc, dev) { |
f453ba04 DA |
920 | |
921 | if (!crtc->enabled) | |
922 | continue; | |
923 | ||
3c4fdcfb | 924 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
f4510a27 | 925 | crtc->x, crtc->y, crtc->primary->fb); |
f453ba04 | 926 | |
00d762cb | 927 | /* Restoring the old config should never fail! */ |
f453ba04 DA |
928 | if (ret == false) |
929 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); | |
89347bb8 DJ |
930 | |
931 | /* Turn off outputs that were already powered off */ | |
932 | if (drm_helper_choose_crtc_dpms(crtc)) { | |
6295d607 | 933 | drm_for_each_encoder(encoder, dev) { |
89347bb8 DJ |
934 | |
935 | if(encoder->crtc != crtc) | |
936 | continue; | |
937 | ||
3b336ec4 SP |
938 | encoder_dpms = drm_helper_choose_encoder_dpms( |
939 | encoder); | |
940 | ||
941 | drm_helper_encoder_dpms(encoder, encoder_dpms); | |
89347bb8 | 942 | } |
817e631e CW |
943 | |
944 | crtc_funcs = crtc->helper_private; | |
945 | if (crtc_funcs->dpms) | |
946 | (*crtc_funcs->dpms) (crtc, | |
947 | drm_helper_choose_crtc_dpms(crtc)); | |
89347bb8 | 948 | } |
f453ba04 | 949 | } |
00d762cb | 950 | |
af4fcb57 | 951 | /* disable the unused connectors while restoring the modesetting */ |
b182cc59 | 952 | __drm_helper_disable_unused_functions(dev); |
3ea87855 | 953 | drm_modeset_unlock_all(dev); |
f453ba04 DA |
954 | } |
955 | EXPORT_SYMBOL(drm_helper_resume_force_mode); | |
2f324b42 DV |
956 | |
957 | /** | |
958 | * drm_helper_crtc_mode_set - mode_set implementation for atomic plane helpers | |
959 | * @crtc: DRM CRTC | |
960 | * @mode: DRM display mode which userspace requested | |
961 | * @adjusted_mode: DRM display mode adjusted by ->mode_fixup callbacks | |
962 | * @x: x offset of the CRTC scanout area on the underlying framebuffer | |
963 | * @y: y offset of the CRTC scanout area on the underlying framebuffer | |
964 | * @old_fb: previous framebuffer | |
965 | * | |
966 | * This function implements a callback useable as the ->mode_set callback | |
2be94971 | 967 | * required by the CRTC helpers. Besides the atomic plane helper functions for |
2f324b42 | 968 | * the primary plane the driver must also provide the ->mode_set_nofb callback |
2be94971 | 969 | * to set up the CRTC. |
2f324b42 DV |
970 | * |
971 | * This is a transitional helper useful for converting drivers to the atomic | |
972 | * interfaces. | |
973 | */ | |
974 | int drm_helper_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode, | |
975 | struct drm_display_mode *adjusted_mode, int x, int y, | |
976 | struct drm_framebuffer *old_fb) | |
977 | { | |
978 | struct drm_crtc_state *crtc_state; | |
be26a66d | 979 | const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
2f324b42 DV |
980 | int ret; |
981 | ||
982 | if (crtc->funcs->atomic_duplicate_state) | |
983 | crtc_state = crtc->funcs->atomic_duplicate_state(crtc); | |
e4f31ad2 DV |
984 | else { |
985 | if (!crtc->state) | |
986 | drm_atomic_helper_crtc_reset(crtc); | |
987 | ||
ce14ec20 | 988 | crtc_state = drm_atomic_helper_crtc_duplicate_state(crtc); |
e4f31ad2 | 989 | } |
ce14ec20 DV |
990 | |
991 | if (!crtc_state) | |
992 | return -ENOMEM; | |
2f324b42 | 993 | |
2f324b42 | 994 | crtc_state->planes_changed = true; |
623369e5 | 995 | crtc_state->mode_changed = true; |
819364da DS |
996 | ret = drm_atomic_set_mode_for_crtc(crtc_state, mode); |
997 | if (ret) | |
998 | goto out; | |
2f324b42 DV |
999 | drm_mode_copy(&crtc_state->adjusted_mode, adjusted_mode); |
1000 | ||
1001 | if (crtc_funcs->atomic_check) { | |
1002 | ret = crtc_funcs->atomic_check(crtc, crtc_state); | |
9f658b7b DS |
1003 | if (ret) |
1004 | goto out; | |
2f324b42 DV |
1005 | } |
1006 | ||
1007 | swap(crtc->state, crtc_state); | |
1008 | ||
1009 | crtc_funcs->mode_set_nofb(crtc); | |
1010 | ||
9f658b7b DS |
1011 | ret = drm_helper_crtc_mode_set_base(crtc, x, y, old_fb); |
1012 | ||
1013 | out: | |
ce14ec20 DV |
1014 | if (crtc_state) { |
1015 | if (crtc->funcs->atomic_destroy_state) | |
1016 | crtc->funcs->atomic_destroy_state(crtc, crtc_state); | |
1017 | else | |
1018 | drm_atomic_helper_crtc_destroy_state(crtc, crtc_state); | |
2f324b42 DV |
1019 | } |
1020 | ||
9f658b7b | 1021 | return ret; |
2f324b42 DV |
1022 | } |
1023 | EXPORT_SYMBOL(drm_helper_crtc_mode_set); | |
1024 | ||
1025 | /** | |
1026 | * drm_helper_crtc_mode_set_base - mode_set_base implementation for atomic plane helpers | |
1027 | * @crtc: DRM CRTC | |
1028 | * @x: x offset of the CRTC scanout area on the underlying framebuffer | |
1029 | * @y: y offset of the CRTC scanout area on the underlying framebuffer | |
1030 | * @old_fb: previous framebuffer | |
1031 | * | |
1032 | * This function implements a callback useable as the ->mode_set_base used | |
2be94971 | 1033 | * required by the CRTC helpers. The driver must provide the atomic plane helper |
2f324b42 DV |
1034 | * functions for the primary plane. |
1035 | * | |
1036 | * This is a transitional helper useful for converting drivers to the atomic | |
1037 | * interfaces. | |
1038 | */ | |
1039 | int drm_helper_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y, | |
1040 | struct drm_framebuffer *old_fb) | |
1041 | { | |
1042 | struct drm_plane_state *plane_state; | |
1043 | struct drm_plane *plane = crtc->primary; | |
1044 | ||
1045 | if (plane->funcs->atomic_duplicate_state) | |
1046 | plane_state = plane->funcs->atomic_duplicate_state(plane); | |
1047 | else if (plane->state) | |
321ebf04 | 1048 | plane_state = drm_atomic_helper_plane_duplicate_state(plane); |
2f324b42 DV |
1049 | else |
1050 | plane_state = kzalloc(sizeof(*plane_state), GFP_KERNEL); | |
1051 | if (!plane_state) | |
1052 | return -ENOMEM; | |
07cc0ef6 | 1053 | plane_state->plane = plane; |
2f324b42 DV |
1054 | |
1055 | plane_state->crtc = crtc; | |
321ebf04 | 1056 | drm_atomic_set_fb_for_plane(plane_state, crtc->primary->fb); |
2f324b42 DV |
1057 | plane_state->crtc_x = 0; |
1058 | plane_state->crtc_y = 0; | |
1059 | plane_state->crtc_h = crtc->mode.vdisplay; | |
1060 | plane_state->crtc_w = crtc->mode.hdisplay; | |
1061 | plane_state->src_x = x << 16; | |
1062 | plane_state->src_y = y << 16; | |
1063 | plane_state->src_h = crtc->mode.vdisplay << 16; | |
1064 | plane_state->src_w = crtc->mode.hdisplay << 16; | |
1065 | ||
1066 | return drm_plane_helper_commit(plane, plane_state, old_fb); | |
1067 | } | |
1068 | EXPORT_SYMBOL(drm_helper_crtc_mode_set_base); |