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 | * | |
54 | * The driver callbacks are mostly compatible with the atomic modeset helpers, | |
55 | * except for the handling of the primary plane: Atomic helpers require that the | |
56 | * primary plane is implemented as a real standalone plane and not directly tied | |
57 | * to the CRTC state. For easier transition this library provides functions to | |
58 | * implement the old semantics required by the CRTC helpers using the new plane | |
59 | * and atomic helper callbacks. | |
60 | * | |
61 | * Drivers are strongly urged to convert to the atomic helpers (by way of first | |
62 | * converting to the plane helpers). New drivers must not use these functions | |
63 | * but need to implement the atomic interface instead, potentially using the | |
64 | * atomic helpers for that. | |
65 | */ | |
92b6f89f DV |
66 | MODULE_AUTHOR("David Airlie, Jesse Barnes"); |
67 | MODULE_DESCRIPTION("DRM KMS helper"); | |
68 | MODULE_LICENSE("GPL and additional rights"); | |
69 | ||
0d4ed4c8 DV |
70 | /** |
71 | * drm_helper_move_panel_connectors_to_head() - move panels to the front in the | |
72 | * connector list | |
73 | * @dev: drm device to operate on | |
74 | * | |
75 | * Some userspace presumes that the first connected connector is the main | |
76 | * display, where it's supposed to display e.g. the login screen. For | |
77 | * laptops, this should be the main panel. Use this function to sort all | |
78 | * (eDP/LVDS) panels to the front of the connector list, instead of | |
79 | * painstakingly trying to initialize them in the right order. | |
80 | */ | |
cfc1a062 DV |
81 | void drm_helper_move_panel_connectors_to_head(struct drm_device *dev) |
82 | { | |
83 | struct drm_connector *connector, *tmp; | |
84 | struct list_head panel_list; | |
85 | ||
86 | INIT_LIST_HEAD(&panel_list); | |
87 | ||
88 | list_for_each_entry_safe(connector, tmp, | |
89 | &dev->mode_config.connector_list, head) { | |
90 | if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS || | |
91 | connector->connector_type == DRM_MODE_CONNECTOR_eDP) | |
92 | list_move_tail(&connector->head, &panel_list); | |
93 | } | |
94 | ||
95 | list_splice(&panel_list, &dev->mode_config.connector_list); | |
96 | } | |
97 | EXPORT_SYMBOL(drm_helper_move_panel_connectors_to_head); | |
98 | ||
c9fb15f6 KP |
99 | /** |
100 | * drm_helper_encoder_in_use - check if a given encoder is in use | |
101 | * @encoder: encoder to check | |
102 | * | |
3fcc42e0 DV |
103 | * Checks whether @encoder is with the current mode setting output configuration |
104 | * in use by any connector. This doesn't mean that it is actually enabled since | |
105 | * the DPMS state is tracked separately. | |
c9fb15f6 | 106 | * |
3fcc42e0 DV |
107 | * Returns: |
108 | * True if @encoder is used, false otherwise. | |
c9fb15f6 KP |
109 | */ |
110 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) | |
111 | { | |
112 | struct drm_connector *connector; | |
113 | struct drm_device *dev = encoder->dev; | |
62ff94a5 | 114 | |
ba6f5826 SA |
115 | /* |
116 | * We can expect this mutex to be locked if we are not panicking. | |
117 | * Locking is currently fubar in the panic handler. | |
118 | */ | |
8d4ad9d4 | 119 | if (!oops_in_progress) { |
ba6f5826 | 120 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); |
8d4ad9d4 DA |
121 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
122 | } | |
ba6f5826 | 123 | |
c9fb15f6 KP |
124 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
125 | if (connector->encoder == encoder) | |
126 | return true; | |
127 | return false; | |
128 | } | |
129 | EXPORT_SYMBOL(drm_helper_encoder_in_use); | |
130 | ||
f453ba04 DA |
131 | /** |
132 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config | |
133 | * @crtc: CRTC to check | |
134 | * | |
3fcc42e0 DV |
135 | * Checks whether @crtc is with the current mode setting output configuration |
136 | * in use by any connector. This doesn't mean that it is actually enabled since | |
137 | * the DPMS state is tracked separately. | |
f453ba04 | 138 | * |
3fcc42e0 DV |
139 | * Returns: |
140 | * True if @crtc is used, false otherwise. | |
f453ba04 DA |
141 | */ |
142 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) | |
143 | { | |
144 | struct drm_encoder *encoder; | |
145 | struct drm_device *dev = crtc->dev; | |
62ff94a5 | 146 | |
ba6f5826 SA |
147 | /* |
148 | * We can expect this mutex to be locked if we are not panicking. | |
149 | * Locking is currently fubar in the panic handler. | |
150 | */ | |
151 | if (!oops_in_progress) | |
152 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); | |
153 | ||
f453ba04 | 154 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) |
c9fb15f6 | 155 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
f453ba04 DA |
156 | return true; |
157 | return false; | |
158 | } | |
159 | EXPORT_SYMBOL(drm_helper_crtc_in_use); | |
160 | ||
86a1b9d1 BS |
161 | static void |
162 | drm_encoder_disable(struct drm_encoder *encoder) | |
163 | { | |
be26a66d | 164 | const struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; |
86a1b9d1 | 165 | |
862e686c | 166 | drm_bridge_disable(encoder->bridge); |
3b336ec4 | 167 | |
86a1b9d1 BS |
168 | if (encoder_funcs->disable) |
169 | (*encoder_funcs->disable)(encoder); | |
170 | else | |
171 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); | |
3b336ec4 | 172 | |
862e686c | 173 | drm_bridge_post_disable(encoder->bridge); |
86a1b9d1 BS |
174 | } |
175 | ||
b182cc59 | 176 | static void __drm_helper_disable_unused_functions(struct drm_device *dev) |
f453ba04 DA |
177 | { |
178 | struct drm_encoder *encoder; | |
f453ba04 DA |
179 | struct drm_crtc *crtc; |
180 | ||
62ff94a5 DV |
181 | drm_warn_on_modeset_not_all_locked(dev); |
182 | ||
f453ba04 | 183 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
92971021 | 184 | if (!drm_helper_encoder_in_use(encoder)) { |
86a1b9d1 | 185 | drm_encoder_disable(encoder); |
b5e6c1da | 186 | /* disconnect encoder from any connector */ |
9c552dd7 | 187 | encoder->crtc = NULL; |
a3a0544b | 188 | } |
f453ba04 DA |
189 | } |
190 | ||
191 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
be26a66d | 192 | const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
f453ba04 DA |
193 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
194 | if (!crtc->enabled) { | |
5c8d7171 AD |
195 | if (crtc_funcs->disable) |
196 | (*crtc_funcs->disable)(crtc); | |
197 | else | |
198 | (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF); | |
f4510a27 | 199 | crtc->primary->fb = NULL; |
f453ba04 DA |
200 | } |
201 | } | |
202 | } | |
b182cc59 DV |
203 | |
204 | /** | |
205 | * drm_helper_disable_unused_functions - disable unused objects | |
206 | * @dev: DRM device | |
207 | * | |
208 | * This function walks through the entire mode setting configuration of @dev. It | |
209 | * will remove any crtc links of unused encoders and encoder links of | |
210 | * disconnected connectors. Then it will disable all unused encoders and crtcs | |
211 | * either by calling their disable callback if available or by calling their | |
212 | * dpms callback with DRM_MODE_DPMS_OFF. | |
213 | */ | |
214 | void drm_helper_disable_unused_functions(struct drm_device *dev) | |
215 | { | |
216 | drm_modeset_lock_all(dev); | |
217 | __drm_helper_disable_unused_functions(dev); | |
218 | drm_modeset_unlock_all(dev); | |
219 | } | |
f453ba04 DA |
220 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); |
221 | ||
7bec756c JB |
222 | /* |
223 | * Check the CRTC we're going to map each output to vs. its current | |
224 | * CRTC. If they don't match, we have to disable the output and the CRTC | |
225 | * since the driver will have to re-route things. | |
226 | */ | |
227 | static void | |
228 | drm_crtc_prepare_encoders(struct drm_device *dev) | |
229 | { | |
be26a66d | 230 | const struct drm_encoder_helper_funcs *encoder_funcs; |
7bec756c JB |
231 | struct drm_encoder *encoder; |
232 | ||
233 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
234 | encoder_funcs = encoder->helper_private; | |
235 | /* Disable unused encoders */ | |
236 | if (encoder->crtc == NULL) | |
86a1b9d1 | 237 | drm_encoder_disable(encoder); |
7bec756c JB |
238 | /* Disable encoders whose CRTC is about to change */ |
239 | if (encoder_funcs->get_crtc && | |
240 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) | |
86a1b9d1 | 241 | drm_encoder_disable(encoder); |
7bec756c JB |
242 | } |
243 | } | |
244 | ||
f453ba04 | 245 | /** |
0d4ed4c8 | 246 | * drm_crtc_helper_set_mode - internal helper to set a mode |
f453ba04 DA |
247 | * @crtc: CRTC to program |
248 | * @mode: mode to use | |
4c9287c6 AD |
249 | * @x: horizontal offset into the surface |
250 | * @y: vertical offset into the surface | |
0d4ed4c8 | 251 | * @old_fb: old framebuffer, for cleanup |
f453ba04 | 252 | * |
f453ba04 | 253 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance |
0d4ed4c8 DV |
254 | * to fixup or reject the mode prior to trying to set it. This is an internal |
255 | * helper that drivers could e.g. use to update properties that require the | |
256 | * entire output pipe to be disabled and re-enabled in a new configuration. For | |
257 | * example for changing whether audio is enabled on a hdmi link or for changing | |
258 | * panel fitter or dither attributes. It is also called by the | |
259 | * drm_crtc_helper_set_config() helper function to drive the mode setting | |
260 | * sequence. | |
f453ba04 | 261 | * |
3fcc42e0 DV |
262 | * Returns: |
263 | * True if the mode was set successfully, false otherwise. | |
f453ba04 DA |
264 | */ |
265 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, | |
266 | struct drm_display_mode *mode, | |
3c4fdcfb KH |
267 | int x, int y, |
268 | struct drm_framebuffer *old_fb) | |
f453ba04 DA |
269 | { |
270 | struct drm_device *dev = crtc->dev; | |
5a27528a | 271 | struct drm_display_mode *adjusted_mode, saved_mode, saved_hwmode; |
be26a66d JN |
272 | const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
273 | const struct drm_encoder_helper_funcs *encoder_funcs; | |
f453ba04 | 274 | int saved_x, saved_y; |
7e99acdc | 275 | bool saved_enabled; |
f453ba04 DA |
276 | struct drm_encoder *encoder; |
277 | bool ret = true; | |
278 | ||
62ff94a5 DV |
279 | drm_warn_on_modeset_not_all_locked(dev); |
280 | ||
7e99acdc | 281 | saved_enabled = crtc->enabled; |
f453ba04 | 282 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
f453ba04 DA |
283 | if (!crtc->enabled) |
284 | return true; | |
285 | ||
021a8455 | 286 | adjusted_mode = drm_mode_duplicate(dev, mode); |
7e99acdc IH |
287 | if (!adjusted_mode) { |
288 | crtc->enabled = saved_enabled; | |
6bfc56aa | 289 | return false; |
7e99acdc | 290 | } |
021a8455 | 291 | |
f453ba04 | 292 | saved_mode = crtc->mode; |
5a27528a | 293 | saved_hwmode = crtc->hwmode; |
f453ba04 DA |
294 | saved_x = crtc->x; |
295 | saved_y = crtc->y; | |
296 | ||
297 | /* Update crtc values up front so the driver can rely on them for mode | |
298 | * setting. | |
299 | */ | |
300 | crtc->mode = *mode; | |
301 | crtc->x = x; | |
302 | crtc->y = y; | |
303 | ||
f453ba04 DA |
304 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
305 | * adjust it according to limitations or connector properties, and also | |
306 | * a chance to reject the mode entirely. | |
307 | */ | |
308 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
309 | ||
310 | if (encoder->crtc != crtc) | |
311 | continue; | |
3b336ec4 | 312 | |
862e686c AT |
313 | ret = drm_bridge_mode_fixup(encoder->bridge, |
314 | mode, adjusted_mode); | |
315 | if (!ret) { | |
316 | DRM_DEBUG_KMS("Bridge fixup failed\n"); | |
317 | goto done; | |
3b336ec4 SP |
318 | } |
319 | ||
f453ba04 DA |
320 | encoder_funcs = encoder->helper_private; |
321 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, | |
322 | adjusted_mode))) { | |
836e53d7 | 323 | DRM_DEBUG_KMS("Encoder fixup failed\n"); |
f453ba04 DA |
324 | goto done; |
325 | } | |
326 | } | |
327 | ||
328 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { | |
836e53d7 | 329 | DRM_DEBUG_KMS("CRTC fixup failed\n"); |
f453ba04 DA |
330 | goto done; |
331 | } | |
9440106b | 332 | DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); |
f453ba04 | 333 | |
5a27528a DS |
334 | crtc->hwmode = *adjusted_mode; |
335 | ||
f453ba04 DA |
336 | /* Prepare the encoders and CRTCs before setting the mode. */ |
337 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
338 | ||
339 | if (encoder->crtc != crtc) | |
340 | continue; | |
3b336ec4 | 341 | |
862e686c | 342 | drm_bridge_disable(encoder->bridge); |
3b336ec4 | 343 | |
f453ba04 DA |
344 | encoder_funcs = encoder->helper_private; |
345 | /* Disable the encoders as the first thing we do. */ | |
346 | encoder_funcs->prepare(encoder); | |
3b336ec4 | 347 | |
862e686c | 348 | drm_bridge_post_disable(encoder->bridge); |
f453ba04 DA |
349 | } |
350 | ||
7bec756c JB |
351 | drm_crtc_prepare_encoders(dev); |
352 | ||
f453ba04 DA |
353 | crtc_funcs->prepare(crtc); |
354 | ||
355 | /* Set up the DPLL and any encoders state that needs to adjust or depend | |
356 | * on the DPLL. | |
357 | */ | |
5c3b82e2 CW |
358 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
359 | if (!ret) | |
360 | goto done; | |
f453ba04 DA |
361 | |
362 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
363 | ||
364 | if (encoder->crtc != crtc) | |
365 | continue; | |
366 | ||
9440106b | 367 | DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n", |
83a8cfd3 | 368 | encoder->base.id, encoder->name, |
9440106b | 369 | mode->base.id, mode->name); |
f453ba04 DA |
370 | encoder_funcs = encoder->helper_private; |
371 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); | |
3b336ec4 | 372 | |
862e686c | 373 | drm_bridge_mode_set(encoder->bridge, mode, adjusted_mode); |
f453ba04 DA |
374 | } |
375 | ||
376 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ | |
377 | crtc_funcs->commit(crtc); | |
378 | ||
379 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
380 | ||
381 | if (encoder->crtc != crtc) | |
382 | continue; | |
383 | ||
862e686c | 384 | drm_bridge_pre_enable(encoder->bridge); |
3b336ec4 | 385 | |
f453ba04 DA |
386 | encoder_funcs = encoder->helper_private; |
387 | encoder_funcs->commit(encoder); | |
388 | ||
862e686c | 389 | drm_bridge_enable(encoder->bridge); |
f453ba04 DA |
390 | } |
391 | ||
27641c3f MK |
392 | /* Calculate and store various constants which |
393 | * are later needed by vblank and swap-completion | |
394 | * timestamping. They are derived from true hwmode. | |
395 | */ | |
545cdd55 | 396 | drm_calc_timestamping_constants(crtc, &crtc->hwmode); |
27641c3f | 397 | |
f453ba04 DA |
398 | /* FIXME: add subpixel order */ |
399 | done: | |
021a8455 | 400 | drm_mode_destroy(dev, adjusted_mode); |
f453ba04 | 401 | if (!ret) { |
7e99acdc | 402 | crtc->enabled = saved_enabled; |
f453ba04 | 403 | crtc->mode = saved_mode; |
5a27528a | 404 | crtc->hwmode = saved_hwmode; |
f453ba04 DA |
405 | crtc->x = saved_x; |
406 | crtc->y = saved_y; | |
407 | } | |
408 | ||
409 | return ret; | |
410 | } | |
411 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); | |
412 | ||
a74591d7 | 413 | static void |
6eebd6bb CW |
414 | drm_crtc_helper_disable(struct drm_crtc *crtc) |
415 | { | |
416 | struct drm_device *dev = crtc->dev; | |
417 | struct drm_connector *connector; | |
418 | struct drm_encoder *encoder; | |
419 | ||
420 | /* Decouple all encoders and their attached connectors from this crtc */ | |
421 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
422 | if (encoder->crtc != crtc) | |
423 | continue; | |
424 | ||
425 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
426 | if (connector->encoder != encoder) | |
427 | continue; | |
428 | ||
429 | connector->encoder = NULL; | |
a6ad6230 TR |
430 | |
431 | /* | |
432 | * drm_helper_disable_unused_functions() ought to be | |
433 | * doing this, but since we've decoupled the encoder | |
434 | * from the connector above, the required connection | |
435 | * between them is henceforth no longer available. | |
436 | */ | |
437 | connector->dpms = DRM_MODE_DPMS_OFF; | |
6eebd6bb CW |
438 | } |
439 | } | |
440 | ||
b182cc59 | 441 | __drm_helper_disable_unused_functions(dev); |
6eebd6bb CW |
442 | } |
443 | ||
f453ba04 DA |
444 | /** |
445 | * drm_crtc_helper_set_config - set a new config from userspace | |
0d4ed4c8 | 446 | * @set: mode set configuration |
f453ba04 | 447 | * |
0d4ed4c8 | 448 | * Setup a new configuration, provided by the upper layers (either an ioctl call |
e227867f | 449 | * from userspace or internally e.g. from the fbdev support code) in @set, and |
0d4ed4c8 DV |
450 | * enable it. This is the main helper functions for drivers that implement |
451 | * kernel mode setting with the crtc helper functions and the assorted | |
452 | * ->prepare(), ->modeset() and ->commit() helper callbacks. | |
f453ba04 | 453 | * |
3fcc42e0 DV |
454 | * Returns: |
455 | * Returns 0 on success, negative errno numbers on failure. | |
f453ba04 DA |
456 | */ |
457 | int drm_crtc_helper_set_config(struct drm_mode_set *set) | |
458 | { | |
459 | struct drm_device *dev; | |
02ee4e94 | 460 | struct drm_crtc *new_crtc; |
e67aae79 | 461 | struct drm_encoder *save_encoders, *new_encoder, *encoder; |
4cb72b17 JB |
462 | bool mode_changed = false; /* if true do a full mode set */ |
463 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ | |
e67aae79 | 464 | struct drm_connector *save_connectors, *connector; |
f453ba04 | 465 | int count = 0, ro, fail = 0; |
be26a66d | 466 | const struct drm_crtc_helper_funcs *crtc_funcs; |
c5006cfe | 467 | struct drm_mode_set save_set; |
4a1b0714 | 468 | int ret; |
bf9dc102 | 469 | int i; |
f453ba04 | 470 | |
58367ed6 | 471 | DRM_DEBUG_KMS("\n"); |
f453ba04 | 472 | |
e58de880 DV |
473 | BUG_ON(!set); |
474 | BUG_ON(!set->crtc); | |
475 | BUG_ON(!set->crtc->helper_private); | |
f453ba04 | 476 | |
e58de880 DV |
477 | /* Enforce sane interface api - has been abused by the fb helper. */ |
478 | BUG_ON(!set->mode && set->fb); | |
479 | BUG_ON(set->fb && set->num_connectors == 0); | |
f453ba04 DA |
480 | |
481 | crtc_funcs = set->crtc->helper_private; | |
482 | ||
ede3ff52 CW |
483 | if (!set->mode) |
484 | set->fb = NULL; | |
485 | ||
9440106b JG |
486 | if (set->fb) { |
487 | DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n", | |
488 | set->crtc->base.id, set->fb->base.id, | |
489 | (int)set->num_connectors, set->x, set->y); | |
490 | } else { | |
ede3ff52 | 491 | DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id); |
a74591d7 TR |
492 | drm_crtc_helper_disable(set->crtc); |
493 | return 0; | |
9440106b | 494 | } |
f453ba04 DA |
495 | |
496 | dev = set->crtc->dev; | |
497 | ||
62ff94a5 DV |
498 | drm_warn_on_modeset_not_all_locked(dev); |
499 | ||
02ee4e94 IH |
500 | /* |
501 | * Allocate space for the backup of all (non-pointer) encoder and | |
502 | * connector data. | |
503 | */ | |
e67aae79 MM |
504 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
505 | sizeof(struct drm_encoder), GFP_KERNEL); | |
02ee4e94 | 506 | if (!save_encoders) |
f453ba04 | 507 | return -ENOMEM; |
f453ba04 | 508 | |
e67aae79 MM |
509 | save_connectors = kzalloc(dev->mode_config.num_connector * |
510 | sizeof(struct drm_connector), GFP_KERNEL); | |
511 | if (!save_connectors) { | |
e67aae79 MM |
512 | kfree(save_encoders); |
513 | return -ENOMEM; | |
514 | } | |
515 | ||
02ee4e94 IH |
516 | /* |
517 | * Copy data. Note that driver private data is not affected. | |
e67aae79 MM |
518 | * Should anything bad happen only the expected state is |
519 | * restored, not the drivers personal bookkeeping. | |
520 | */ | |
e67aae79 MM |
521 | count = 0; |
522 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
523 | save_encoders[count++] = *encoder; | |
524 | } | |
525 | ||
526 | count = 0; | |
527 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
528 | save_connectors[count++] = *connector; | |
529 | } | |
530 | ||
c5006cfe JB |
531 | save_set.crtc = set->crtc; |
532 | save_set.mode = &set->crtc->mode; | |
533 | save_set.x = set->crtc->x; | |
534 | save_set.y = set->crtc->y; | |
f4510a27 | 535 | save_set.fb = set->crtc->primary->fb; |
c5006cfe | 536 | |
f453ba04 DA |
537 | /* We should be able to check here if the fb has the same properties |
538 | * and then just flip_or_move it */ | |
f4510a27 | 539 | if (set->crtc->primary->fb != set->fb) { |
712531bf | 540 | /* If we have no fb then treat it as a full mode set */ |
f4510a27 | 541 | if (set->crtc->primary->fb == NULL) { |
58367ed6 | 542 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
712531bf | 543 | mode_changed = true; |
4cb72b17 JB |
544 | } else if (set->fb == NULL) { |
545 | mode_changed = true; | |
ce83adf7 | 546 | } else if (set->fb->pixel_format != |
f4510a27 | 547 | set->crtc->primary->fb->pixel_format) { |
ce83adf7 | 548 | mode_changed = true; |
8dff4742 | 549 | } else |
712531bf | 550 | fb_changed = true; |
f453ba04 DA |
551 | } |
552 | ||
553 | if (set->x != set->crtc->x || set->y != set->crtc->y) | |
712531bf | 554 | fb_changed = true; |
f453ba04 DA |
555 | |
556 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { | |
58367ed6 | 557 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
f453ba04 DA |
558 | drm_mode_debug_printmodeline(&set->crtc->mode); |
559 | drm_mode_debug_printmodeline(set->mode); | |
712531bf | 560 | mode_changed = true; |
f453ba04 DA |
561 | } |
562 | ||
563 | /* a) traverse passed in connector list and get encoders for them */ | |
564 | count = 0; | |
565 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
be26a66d | 566 | const struct drm_connector_helper_funcs *connector_funcs = |
f453ba04 | 567 | connector->helper_private; |
f453ba04 DA |
568 | new_encoder = connector->encoder; |
569 | for (ro = 0; ro < set->num_connectors; ro++) { | |
570 | if (set->connectors[ro] == connector) { | |
571 | new_encoder = connector_funcs->best_encoder(connector); | |
572 | /* if we can't get an encoder for a connector | |
573 | we are setting now - then fail */ | |
574 | if (new_encoder == NULL) | |
575 | /* don't break so fail path works correct */ | |
576 | fail = 1; | |
25f397a4 DV |
577 | |
578 | if (connector->dpms != DRM_MODE_DPMS_ON) { | |
579 | DRM_DEBUG_KMS("connector dpms not on, full mode switch\n"); | |
580 | mode_changed = true; | |
581 | } | |
177cf92d DV |
582 | |
583 | break; | |
f453ba04 DA |
584 | } |
585 | } | |
586 | ||
587 | if (new_encoder != connector->encoder) { | |
58367ed6 | 588 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
712531bf | 589 | mode_changed = true; |
ff846ab7 MM |
590 | /* If the encoder is reused for another connector, then |
591 | * the appropriate crtc will be set later. | |
592 | */ | |
ff6fdbed MM |
593 | if (connector->encoder) |
594 | connector->encoder->crtc = NULL; | |
f453ba04 DA |
595 | connector->encoder = new_encoder; |
596 | } | |
597 | } | |
598 | ||
599 | if (fail) { | |
600 | ret = -EINVAL; | |
e67aae79 | 601 | goto fail; |
f453ba04 DA |
602 | } |
603 | ||
604 | count = 0; | |
605 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
606 | if (!connector->encoder) | |
607 | continue; | |
608 | ||
f453ba04 DA |
609 | if (connector->encoder->crtc == set->crtc) |
610 | new_crtc = NULL; | |
611 | else | |
612 | new_crtc = connector->encoder->crtc; | |
613 | ||
614 | for (ro = 0; ro < set->num_connectors; ro++) { | |
615 | if (set->connectors[ro] == connector) | |
616 | new_crtc = set->crtc; | |
617 | } | |
7bec756c JB |
618 | |
619 | /* Make sure the new CRTC will work with the encoder */ | |
620 | if (new_crtc && | |
621 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { | |
622 | ret = -EINVAL; | |
e67aae79 | 623 | goto fail; |
7bec756c | 624 | } |
f453ba04 | 625 | if (new_crtc != connector->encoder->crtc) { |
58367ed6 | 626 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
712531bf | 627 | mode_changed = true; |
f453ba04 DA |
628 | connector->encoder->crtc = new_crtc; |
629 | } | |
9440106b JG |
630 | if (new_crtc) { |
631 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n", | |
25933820 | 632 | connector->base.id, connector->name, |
9440106b JG |
633 | new_crtc->base.id); |
634 | } else { | |
635 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n", | |
25933820 | 636 | connector->base.id, connector->name); |
9440106b | 637 | } |
f453ba04 DA |
638 | } |
639 | ||
640 | /* mode_set_base is not a required function */ | |
712531bf JB |
641 | if (fb_changed && !crtc_funcs->mode_set_base) |
642 | mode_changed = true; | |
f453ba04 | 643 | |
712531bf | 644 | if (mode_changed) { |
48b1f5dd | 645 | if (drm_helper_crtc_in_use(set->crtc)) { |
58367ed6 ZY |
646 | DRM_DEBUG_KMS("attempting to set mode from" |
647 | " userspace\n"); | |
f453ba04 | 648 | drm_mode_debug_printmodeline(set->mode); |
f4510a27 | 649 | set->crtc->primary->fb = set->fb; |
f453ba04 | 650 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
3c4fdcfb | 651 | set->x, set->y, |
bec2eac3 | 652 | save_set.fb)) { |
9440106b JG |
653 | DRM_ERROR("failed to set mode on [CRTC:%d]\n", |
654 | set->crtc->base.id); | |
f4510a27 | 655 | set->crtc->primary->fb = save_set.fb; |
f453ba04 | 656 | ret = -EINVAL; |
e67aae79 | 657 | goto fail; |
f453ba04 | 658 | } |
25f397a4 DV |
659 | DRM_DEBUG_KMS("Setting connector DPMS state to on\n"); |
660 | for (i = 0; i < set->num_connectors; i++) { | |
661 | DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id, | |
25933820 | 662 | set->connectors[i]->name); |
25f397a4 DV |
663 | set->connectors[i]->funcs->dpms(set->connectors[i], DRM_MODE_DPMS_ON); |
664 | } | |
f453ba04 | 665 | } |
b182cc59 | 666 | __drm_helper_disable_unused_functions(dev); |
712531bf | 667 | } else if (fb_changed) { |
9b1596af BS |
668 | set->crtc->x = set->x; |
669 | set->crtc->y = set->y; | |
f4510a27 | 670 | set->crtc->primary->fb = set->fb; |
5c3b82e2 | 671 | ret = crtc_funcs->mode_set_base(set->crtc, |
bec2eac3 | 672 | set->x, set->y, save_set.fb); |
0ba41e44 | 673 | if (ret != 0) { |
fbce4064 IH |
674 | set->crtc->x = save_set.x; |
675 | set->crtc->y = save_set.y; | |
f4510a27 | 676 | set->crtc->primary->fb = save_set.fb; |
e67aae79 | 677 | goto fail; |
0ba41e44 | 678 | } |
f453ba04 DA |
679 | } |
680 | ||
e67aae79 | 681 | kfree(save_connectors); |
f453ba04 | 682 | kfree(save_encoders); |
f453ba04 DA |
683 | return 0; |
684 | ||
e67aae79 MM |
685 | fail: |
686 | /* Restore all previous data. */ | |
e67aae79 MM |
687 | count = 0; |
688 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
689 | *encoder = save_encoders[count++]; | |
e62fb64e | 690 | } |
e67aae79 | 691 | |
f453ba04 DA |
692 | count = 0; |
693 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
e67aae79 | 694 | *connector = save_connectors[count++]; |
f453ba04 | 695 | } |
e67aae79 | 696 | |
c5006cfe JB |
697 | /* Try to restore the config */ |
698 | if (mode_changed && | |
699 | !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x, | |
700 | save_set.y, save_set.fb)) | |
701 | DRM_ERROR("failed to restore config after modeset failure\n"); | |
702 | ||
e67aae79 | 703 | kfree(save_connectors); |
f453ba04 DA |
704 | kfree(save_encoders); |
705 | return ret; | |
706 | } | |
707 | EXPORT_SYMBOL(drm_crtc_helper_set_config); | |
708 | ||
c9fb15f6 KP |
709 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
710 | { | |
711 | int dpms = DRM_MODE_DPMS_OFF; | |
712 | struct drm_connector *connector; | |
713 | struct drm_device *dev = encoder->dev; | |
714 | ||
715 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
716 | if (connector->encoder == encoder) | |
717 | if (connector->dpms < dpms) | |
718 | dpms = connector->dpms; | |
719 | return dpms; | |
720 | } | |
721 | ||
3b336ec4 SP |
722 | /* Helper which handles bridge ordering around encoder dpms */ |
723 | static void drm_helper_encoder_dpms(struct drm_encoder *encoder, int mode) | |
724 | { | |
725 | struct drm_bridge *bridge = encoder->bridge; | |
be26a66d | 726 | const struct drm_encoder_helper_funcs *encoder_funcs; |
3b336ec4 | 727 | |
862e686c AT |
728 | if (mode == DRM_MODE_DPMS_ON) |
729 | drm_bridge_pre_enable(bridge); | |
730 | else | |
731 | drm_bridge_disable(bridge); | |
3b336ec4 SP |
732 | |
733 | encoder_funcs = encoder->helper_private; | |
734 | if (encoder_funcs->dpms) | |
735 | encoder_funcs->dpms(encoder, mode); | |
736 | ||
862e686c AT |
737 | if (mode == DRM_MODE_DPMS_ON) |
738 | drm_bridge_enable(bridge); | |
739 | else | |
740 | drm_bridge_post_disable(bridge); | |
3b336ec4 SP |
741 | } |
742 | ||
c9fb15f6 KP |
743 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) |
744 | { | |
745 | int dpms = DRM_MODE_DPMS_OFF; | |
746 | struct drm_connector *connector; | |
747 | struct drm_device *dev = crtc->dev; | |
748 | ||
749 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
750 | if (connector->encoder && connector->encoder->crtc == crtc) | |
751 | if (connector->dpms < dpms) | |
752 | dpms = connector->dpms; | |
753 | return dpms; | |
754 | } | |
755 | ||
756 | /** | |
0d4ed4c8 DV |
757 | * drm_helper_connector_dpms() - connector dpms helper implementation |
758 | * @connector: affected connector | |
759 | * @mode: DPMS mode | |
c9fb15f6 | 760 | * |
0d4ed4c8 DV |
761 | * This is the main helper function provided by the crtc helper framework for |
762 | * implementing the DPMS connector attribute. It computes the new desired DPMS | |
763 | * state for all encoders and crtcs in the output mesh and calls the ->dpms() | |
764 | * callback provided by the driver appropriately. | |
c9fb15f6 KP |
765 | */ |
766 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) | |
767 | { | |
768 | struct drm_encoder *encoder = connector->encoder; | |
769 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; | |
3b336ec4 | 770 | int old_dpms, encoder_dpms = DRM_MODE_DPMS_OFF; |
c9fb15f6 KP |
771 | |
772 | if (mode == connector->dpms) | |
773 | return; | |
774 | ||
775 | old_dpms = connector->dpms; | |
776 | connector->dpms = mode; | |
777 | ||
3b336ec4 SP |
778 | if (encoder) |
779 | encoder_dpms = drm_helper_choose_encoder_dpms(encoder); | |
780 | ||
c9fb15f6 KP |
781 | /* from off to on, do crtc then encoder */ |
782 | if (mode < old_dpms) { | |
783 | if (crtc) { | |
be26a66d | 784 | const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
c9fb15f6 KP |
785 | if (crtc_funcs->dpms) |
786 | (*crtc_funcs->dpms) (crtc, | |
787 | drm_helper_choose_crtc_dpms(crtc)); | |
788 | } | |
3b336ec4 SP |
789 | if (encoder) |
790 | drm_helper_encoder_dpms(encoder, encoder_dpms); | |
c9fb15f6 KP |
791 | } |
792 | ||
793 | /* from on to off, do encoder then crtc */ | |
794 | if (mode > old_dpms) { | |
3b336ec4 SP |
795 | if (encoder) |
796 | drm_helper_encoder_dpms(encoder, encoder_dpms); | |
c9fb15f6 | 797 | if (crtc) { |
be26a66d | 798 | const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
c9fb15f6 KP |
799 | if (crtc_funcs->dpms) |
800 | (*crtc_funcs->dpms) (crtc, | |
801 | drm_helper_choose_crtc_dpms(crtc)); | |
802 | } | |
803 | } | |
804 | ||
805 | return; | |
806 | } | |
807 | EXPORT_SYMBOL(drm_helper_connector_dpms); | |
808 | ||
3fcc42e0 DV |
809 | /** |
810 | * drm_helper_mode_fill_fb_struct - fill out framebuffer metadata | |
811 | * @fb: drm_framebuffer object to fill out | |
812 | * @mode_cmd: metadata from the userspace fb creation request | |
813 | * | |
814 | * This helper can be used in a drivers fb_create callback to pre-fill the fb's | |
815 | * metadata fields. | |
816 | */ | |
9fd93784 DV |
817 | void drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
818 | struct drm_mode_fb_cmd2 *mode_cmd) | |
f453ba04 | 819 | { |
01f2c773 VS |
820 | int i; |
821 | ||
f453ba04 DA |
822 | fb->width = mode_cmd->width; |
823 | fb->height = mode_cmd->height; | |
01f2c773 VS |
824 | for (i = 0; i < 4; i++) { |
825 | fb->pitches[i] = mode_cmd->pitches[i]; | |
826 | fb->offsets[i] = mode_cmd->offsets[i]; | |
e3eb3250 | 827 | fb->modifier[i] = mode_cmd->modifier[i]; |
01f2c773 | 828 | } |
248dbc23 | 829 | drm_fb_get_bpp_depth(mode_cmd->pixel_format, &fb->depth, |
308e5bcb JB |
830 | &fb->bits_per_pixel); |
831 | fb->pixel_format = mode_cmd->pixel_format; | |
d980b183 | 832 | fb->flags = mode_cmd->flags; |
f453ba04 DA |
833 | } |
834 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); | |
835 | ||
aa4cd910 DV |
836 | /** |
837 | * drm_helper_resume_force_mode - force-restore mode setting configuration | |
838 | * @dev: drm_device which should be restored | |
839 | * | |
840 | * Drivers which use the mode setting helpers can use this function to | |
841 | * force-restore the mode setting configuration e.g. on resume or when something | |
842 | * else might have trampled over the hw state (like some overzealous old BIOSen | |
843 | * tended to do). | |
00d762cb DV |
844 | * |
845 | * This helper doesn't provide a error return value since restoring the old | |
846 | * config should never fail due to resource allocation issues since the driver | |
847 | * has successfully set the restored configuration already. Hence this should | |
848 | * boil down to the equivalent of a few dpms on calls, which also don't provide | |
849 | * an error code. | |
850 | * | |
851 | * Drivers where simply restoring an old configuration again might fail (e.g. | |
852 | * due to slight differences in allocating shared resources when the | |
853 | * configuration is restored in a different order than when userspace set it up) | |
854 | * need to use their own restore logic. | |
aa4cd910 | 855 | */ |
00d762cb | 856 | void drm_helper_resume_force_mode(struct drm_device *dev) |
f453ba04 DA |
857 | { |
858 | struct drm_crtc *crtc; | |
89347bb8 | 859 | struct drm_encoder *encoder; |
be26a66d | 860 | const struct drm_crtc_helper_funcs *crtc_funcs; |
00d762cb DV |
861 | int encoder_dpms; |
862 | bool ret; | |
f453ba04 | 863 | |
3ea87855 | 864 | drm_modeset_lock_all(dev); |
f453ba04 DA |
865 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
866 | ||
867 | if (!crtc->enabled) | |
868 | continue; | |
869 | ||
3c4fdcfb | 870 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
f4510a27 | 871 | crtc->x, crtc->y, crtc->primary->fb); |
f453ba04 | 872 | |
00d762cb | 873 | /* Restoring the old config should never fail! */ |
f453ba04 DA |
874 | if (ret == false) |
875 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); | |
89347bb8 DJ |
876 | |
877 | /* Turn off outputs that were already powered off */ | |
878 | if (drm_helper_choose_crtc_dpms(crtc)) { | |
879 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
880 | ||
881 | if(encoder->crtc != crtc) | |
882 | continue; | |
883 | ||
3b336ec4 SP |
884 | encoder_dpms = drm_helper_choose_encoder_dpms( |
885 | encoder); | |
886 | ||
887 | drm_helper_encoder_dpms(encoder, encoder_dpms); | |
89347bb8 | 888 | } |
817e631e CW |
889 | |
890 | crtc_funcs = crtc->helper_private; | |
891 | if (crtc_funcs->dpms) | |
892 | (*crtc_funcs->dpms) (crtc, | |
893 | drm_helper_choose_crtc_dpms(crtc)); | |
89347bb8 | 894 | } |
f453ba04 | 895 | } |
00d762cb | 896 | |
af4fcb57 | 897 | /* disable the unused connectors while restoring the modesetting */ |
b182cc59 | 898 | __drm_helper_disable_unused_functions(dev); |
3ea87855 | 899 | drm_modeset_unlock_all(dev); |
f453ba04 DA |
900 | } |
901 | EXPORT_SYMBOL(drm_helper_resume_force_mode); | |
2f324b42 DV |
902 | |
903 | /** | |
904 | * drm_helper_crtc_mode_set - mode_set implementation for atomic plane helpers | |
905 | * @crtc: DRM CRTC | |
906 | * @mode: DRM display mode which userspace requested | |
907 | * @adjusted_mode: DRM display mode adjusted by ->mode_fixup callbacks | |
908 | * @x: x offset of the CRTC scanout area on the underlying framebuffer | |
909 | * @y: y offset of the CRTC scanout area on the underlying framebuffer | |
910 | * @old_fb: previous framebuffer | |
911 | * | |
912 | * This function implements a callback useable as the ->mode_set callback | |
913 | * required by the crtc helpers. Besides the atomic plane helper functions for | |
914 | * the primary plane the driver must also provide the ->mode_set_nofb callback | |
915 | * to set up the crtc. | |
916 | * | |
917 | * This is a transitional helper useful for converting drivers to the atomic | |
918 | * interfaces. | |
919 | */ | |
920 | int drm_helper_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode, | |
921 | struct drm_display_mode *adjusted_mode, int x, int y, | |
922 | struct drm_framebuffer *old_fb) | |
923 | { | |
924 | struct drm_crtc_state *crtc_state; | |
be26a66d | 925 | const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
2f324b42 DV |
926 | int ret; |
927 | ||
928 | if (crtc->funcs->atomic_duplicate_state) | |
929 | crtc_state = crtc->funcs->atomic_duplicate_state(crtc); | |
9f658b7b | 930 | else { |
2f324b42 | 931 | crtc_state = kzalloc(sizeof(*crtc_state), GFP_KERNEL); |
9f658b7b DS |
932 | if (!crtc_state) |
933 | return -ENOMEM; | |
934 | if (crtc->state) | |
935 | __drm_atomic_helper_crtc_duplicate_state(crtc, crtc_state); | |
936 | else | |
937 | crtc_state->crtc = crtc; | |
938 | } | |
2f324b42 | 939 | |
2f324b42 | 940 | crtc_state->planes_changed = true; |
623369e5 | 941 | crtc_state->mode_changed = true; |
819364da DS |
942 | ret = drm_atomic_set_mode_for_crtc(crtc_state, mode); |
943 | if (ret) | |
944 | goto out; | |
2f324b42 DV |
945 | drm_mode_copy(&crtc_state->adjusted_mode, adjusted_mode); |
946 | ||
947 | if (crtc_funcs->atomic_check) { | |
948 | ret = crtc_funcs->atomic_check(crtc, crtc_state); | |
9f658b7b DS |
949 | if (ret) |
950 | goto out; | |
2f324b42 DV |
951 | } |
952 | ||
953 | swap(crtc->state, crtc_state); | |
954 | ||
955 | crtc_funcs->mode_set_nofb(crtc); | |
956 | ||
9f658b7b DS |
957 | ret = drm_helper_crtc_mode_set_base(crtc, x, y, old_fb); |
958 | ||
959 | out: | |
960 | if (crtc->funcs->atomic_destroy_state) | |
961 | crtc->funcs->atomic_destroy_state(crtc, crtc_state); | |
962 | else { | |
963 | __drm_atomic_helper_crtc_destroy_state(crtc, crtc_state); | |
964 | kfree(crtc_state); | |
2f324b42 DV |
965 | } |
966 | ||
9f658b7b | 967 | return ret; |
2f324b42 DV |
968 | } |
969 | EXPORT_SYMBOL(drm_helper_crtc_mode_set); | |
970 | ||
971 | /** | |
972 | * drm_helper_crtc_mode_set_base - mode_set_base implementation for atomic plane helpers | |
973 | * @crtc: DRM CRTC | |
974 | * @x: x offset of the CRTC scanout area on the underlying framebuffer | |
975 | * @y: y offset of the CRTC scanout area on the underlying framebuffer | |
976 | * @old_fb: previous framebuffer | |
977 | * | |
978 | * This function implements a callback useable as the ->mode_set_base used | |
979 | * required by the crtc helpers. The driver must provide the atomic plane helper | |
980 | * functions for the primary plane. | |
981 | * | |
982 | * This is a transitional helper useful for converting drivers to the atomic | |
983 | * interfaces. | |
984 | */ | |
985 | int drm_helper_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y, | |
986 | struct drm_framebuffer *old_fb) | |
987 | { | |
988 | struct drm_plane_state *plane_state; | |
989 | struct drm_plane *plane = crtc->primary; | |
990 | ||
991 | if (plane->funcs->atomic_duplicate_state) | |
992 | plane_state = plane->funcs->atomic_duplicate_state(plane); | |
993 | else if (plane->state) | |
321ebf04 | 994 | plane_state = drm_atomic_helper_plane_duplicate_state(plane); |
2f324b42 DV |
995 | else |
996 | plane_state = kzalloc(sizeof(*plane_state), GFP_KERNEL); | |
997 | if (!plane_state) | |
998 | return -ENOMEM; | |
07cc0ef6 | 999 | plane_state->plane = plane; |
2f324b42 DV |
1000 | |
1001 | plane_state->crtc = crtc; | |
321ebf04 | 1002 | drm_atomic_set_fb_for_plane(plane_state, crtc->primary->fb); |
2f324b42 DV |
1003 | plane_state->crtc_x = 0; |
1004 | plane_state->crtc_y = 0; | |
1005 | plane_state->crtc_h = crtc->mode.vdisplay; | |
1006 | plane_state->crtc_w = crtc->mode.hdisplay; | |
1007 | plane_state->src_x = x << 16; | |
1008 | plane_state->src_y = y << 16; | |
1009 | plane_state->src_h = crtc->mode.vdisplay << 16; | |
1010 | plane_state->src_w = crtc->mode.hdisplay << 16; | |
1011 | ||
1012 | return drm_plane_helper_commit(plane, plane_state, old_fb); | |
1013 | } | |
1014 | EXPORT_SYMBOL(drm_helper_crtc_mode_set_base); |