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 | ||
2d1a8a48 | 32 | #include <linux/export.h> |
0603ba14 | 33 | #include <linux/moduleparam.h> |
2d1a8a48 | 34 | |
760285e7 DH |
35 | #include <drm/drmP.h> |
36 | #include <drm/drm_crtc.h> | |
37 | #include <drm/drm_fourcc.h> | |
38 | #include <drm/drm_crtc_helper.h> | |
39 | #include <drm/drm_fb_helper.h> | |
40 | #include <drm/drm_edid.h> | |
f453ba04 | 41 | |
92b6f89f DV |
42 | MODULE_AUTHOR("David Airlie, Jesse Barnes"); |
43 | MODULE_DESCRIPTION("DRM KMS helper"); | |
44 | MODULE_LICENSE("GPL and additional rights"); | |
45 | ||
0d4ed4c8 DV |
46 | /** |
47 | * drm_helper_move_panel_connectors_to_head() - move panels to the front in the | |
48 | * connector list | |
49 | * @dev: drm device to operate on | |
50 | * | |
51 | * Some userspace presumes that the first connected connector is the main | |
52 | * display, where it's supposed to display e.g. the login screen. For | |
53 | * laptops, this should be the main panel. Use this function to sort all | |
54 | * (eDP/LVDS) panels to the front of the connector list, instead of | |
55 | * painstakingly trying to initialize them in the right order. | |
56 | */ | |
cfc1a062 DV |
57 | void drm_helper_move_panel_connectors_to_head(struct drm_device *dev) |
58 | { | |
59 | struct drm_connector *connector, *tmp; | |
60 | struct list_head panel_list; | |
61 | ||
62 | INIT_LIST_HEAD(&panel_list); | |
63 | ||
64 | list_for_each_entry_safe(connector, tmp, | |
65 | &dev->mode_config.connector_list, head) { | |
66 | if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS || | |
67 | connector->connector_type == DRM_MODE_CONNECTOR_eDP) | |
68 | list_move_tail(&connector->head, &panel_list); | |
69 | } | |
70 | ||
71 | list_splice(&panel_list, &dev->mode_config.connector_list); | |
72 | } | |
73 | EXPORT_SYMBOL(drm_helper_move_panel_connectors_to_head); | |
74 | ||
e58f637b CW |
75 | static bool drm_kms_helper_poll = true; |
76 | module_param_named(poll, drm_kms_helper_poll, bool, 0600); | |
77 | ||
6714977b | 78 | static void drm_mode_validate_flag(struct drm_connector *connector, |
79 | int flags) | |
80 | { | |
a1178ca0 | 81 | struct drm_display_mode *mode; |
6714977b | 82 | |
560a067a DL |
83 | if (flags == (DRM_MODE_FLAG_DBLSCAN | DRM_MODE_FLAG_INTERLACE | |
84 | DRM_MODE_FLAG_3D_MASK)) | |
6714977b | 85 | return; |
86 | ||
a1178ca0 | 87 | list_for_each_entry(mode, &connector->modes, head) { |
6714977b | 88 | if ((mode->flags & DRM_MODE_FLAG_INTERLACE) && |
89 | !(flags & DRM_MODE_FLAG_INTERLACE)) | |
90 | mode->status = MODE_NO_INTERLACE; | |
91 | if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) && | |
92 | !(flags & DRM_MODE_FLAG_DBLSCAN)) | |
93 | mode->status = MODE_NO_DBLESCAN; | |
560a067a DL |
94 | if ((mode->flags & DRM_MODE_FLAG_3D_MASK) && |
95 | !(flags & DRM_MODE_FLAG_3D_MASK)) | |
96 | mode->status = MODE_NO_STEREO; | |
6714977b | 97 | } |
98 | ||
99 | return; | |
100 | } | |
101 | ||
f453ba04 | 102 | /** |
38651674 | 103 | * drm_helper_probe_single_connector_modes - get complete set of display modes |
0d4ed4c8 | 104 | * @connector: connector to probe |
f453ba04 DA |
105 | * @maxX: max width for modes |
106 | * @maxY: max height for modes | |
107 | * | |
0d4ed4c8 DV |
108 | * Based on the helper callbacks implemented by @connector try to detect all |
109 | * valid modes. Modes will first be added to the connector's probed_modes list, | |
110 | * then culled (based on validity and the @maxX, @maxY parameters) and put into | |
111 | * the normal modes list. | |
f453ba04 | 112 | * |
1eee814d LD |
113 | * Intended to be use as a generic implementation of the ->fill_modes() |
114 | * @connector vfunc for drivers that use the crtc helpers for output mode | |
115 | * filtering and detection. | |
40a518d9 | 116 | * |
3fcc42e0 DV |
117 | * Returns: |
118 | * The number of modes found on @connector. | |
f453ba04 | 119 | */ |
40a518d9 JB |
120 | int drm_helper_probe_single_connector_modes(struct drm_connector *connector, |
121 | uint32_t maxX, uint32_t maxY) | |
f453ba04 DA |
122 | { |
123 | struct drm_device *dev = connector->dev; | |
a1178ca0 | 124 | struct drm_display_mode *mode; |
f453ba04 DA |
125 | struct drm_connector_helper_funcs *connector_funcs = |
126 | connector->helper_private; | |
40a518d9 | 127 | int count = 0; |
6714977b | 128 | int mode_flags = 0; |
ebbd97ad | 129 | bool verbose_prune = true; |
f453ba04 | 130 | |
62ff94a5 DV |
131 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); |
132 | ||
9440106b JG |
133 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id, |
134 | drm_get_connector_name(connector)); | |
f453ba04 | 135 | /* set all modes to the unverified state */ |
a1178ca0 | 136 | list_for_each_entry(mode, &connector->modes, head) |
f453ba04 DA |
137 | mode->status = MODE_UNVERIFIED; |
138 | ||
d50ba256 DA |
139 | if (connector->force) { |
140 | if (connector->force == DRM_FORCE_ON) | |
141 | connector->status = connector_status_connected; | |
142 | else | |
143 | connector->status = connector_status_disconnected; | |
144 | if (connector->funcs->force) | |
145 | connector->funcs->force(connector); | |
e58f637b | 146 | } else { |
930a9e28 | 147 | connector->status = connector->funcs->detect(connector, true); |
e58f637b | 148 | } |
f453ba04 | 149 | |
905bc9ff DV |
150 | /* Re-enable polling in case the global poll config changed. */ |
151 | if (drm_kms_helper_poll != dev->mode_config.poll_running) | |
152 | drm_kms_helper_poll_enable(dev); | |
153 | ||
154 | dev->mode_config.poll_running = drm_kms_helper_poll; | |
155 | ||
f453ba04 | 156 | if (connector->status == connector_status_disconnected) { |
9440106b JG |
157 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] disconnected\n", |
158 | connector->base.id, drm_get_connector_name(connector)); | |
72539832 | 159 | drm_mode_connector_update_edid_property(connector, NULL); |
ebbd97ad | 160 | verbose_prune = false; |
620f3781 | 161 | goto prune; |
f453ba04 DA |
162 | } |
163 | ||
da0df92b CE |
164 | #ifdef CONFIG_DRM_LOAD_EDID_FIRMWARE |
165 | count = drm_load_edid_firmware(connector); | |
166 | if (count == 0) | |
167 | #endif | |
168 | count = (*connector_funcs->get_modes)(connector); | |
169 | ||
c7ef35a9 | 170 | if (count == 0 && connector->status == connector_status_connected) |
9632b41f | 171 | count = drm_add_modes_noedid(connector, 1024, 768); |
c7ef35a9 CW |
172 | if (count == 0) |
173 | goto prune; | |
f453ba04 | 174 | |
40a518d9 | 175 | drm_mode_connector_list_update(connector); |
f453ba04 DA |
176 | |
177 | if (maxX && maxY) | |
3e70292c | 178 | drm_mode_validate_size(dev, &connector->modes, maxX, maxY); |
6714977b | 179 | |
180 | if (connector->interlace_allowed) | |
181 | mode_flags |= DRM_MODE_FLAG_INTERLACE; | |
182 | if (connector->doublescan_allowed) | |
183 | mode_flags |= DRM_MODE_FLAG_DBLSCAN; | |
560a067a DL |
184 | if (connector->stereo_allowed) |
185 | mode_flags |= DRM_MODE_FLAG_3D_MASK; | |
6714977b | 186 | drm_mode_validate_flag(connector, mode_flags); |
187 | ||
a1178ca0 | 188 | list_for_each_entry(mode, &connector->modes, head) { |
f453ba04 DA |
189 | if (mode->status == MODE_OK) |
190 | mode->status = connector_funcs->mode_valid(connector, | |
191 | mode); | |
192 | } | |
193 | ||
620f3781 | 194 | prune: |
ebbd97ad | 195 | drm_mode_prune_invalid(dev, &connector->modes, verbose_prune); |
f453ba04 | 196 | |
40a518d9 JB |
197 | if (list_empty(&connector->modes)) |
198 | return 0; | |
f453ba04 | 199 | |
9bc3cd56 VS |
200 | list_for_each_entry(mode, &connector->modes, head) |
201 | mode->vrefresh = drm_mode_vrefresh(mode); | |
202 | ||
f453ba04 DA |
203 | drm_mode_sort(&connector->modes); |
204 | ||
9440106b JG |
205 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] probed modes :\n", connector->base.id, |
206 | drm_get_connector_name(connector)); | |
a1178ca0 | 207 | list_for_each_entry(mode, &connector->modes, head) { |
f453ba04 DA |
208 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); |
209 | drm_mode_debug_printmodeline(mode); | |
210 | } | |
40a518d9 JB |
211 | |
212 | return count; | |
f453ba04 DA |
213 | } |
214 | EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); | |
215 | ||
c9fb15f6 KP |
216 | /** |
217 | * drm_helper_encoder_in_use - check if a given encoder is in use | |
218 | * @encoder: encoder to check | |
219 | * | |
3fcc42e0 DV |
220 | * Checks whether @encoder is with the current mode setting output configuration |
221 | * in use by any connector. This doesn't mean that it is actually enabled since | |
222 | * the DPMS state is tracked separately. | |
c9fb15f6 | 223 | * |
3fcc42e0 DV |
224 | * Returns: |
225 | * True if @encoder is used, false otherwise. | |
c9fb15f6 KP |
226 | */ |
227 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) | |
228 | { | |
229 | struct drm_connector *connector; | |
230 | struct drm_device *dev = encoder->dev; | |
62ff94a5 DV |
231 | |
232 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); | |
c9fb15f6 KP |
233 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
234 | if (connector->encoder == encoder) | |
235 | return true; | |
236 | return false; | |
237 | } | |
238 | EXPORT_SYMBOL(drm_helper_encoder_in_use); | |
239 | ||
f453ba04 DA |
240 | /** |
241 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config | |
242 | * @crtc: CRTC to check | |
243 | * | |
3fcc42e0 DV |
244 | * Checks whether @crtc is with the current mode setting output configuration |
245 | * in use by any connector. This doesn't mean that it is actually enabled since | |
246 | * the DPMS state is tracked separately. | |
f453ba04 | 247 | * |
3fcc42e0 DV |
248 | * Returns: |
249 | * True if @crtc is used, false otherwise. | |
f453ba04 DA |
250 | */ |
251 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) | |
252 | { | |
253 | struct drm_encoder *encoder; | |
254 | struct drm_device *dev = crtc->dev; | |
62ff94a5 DV |
255 | |
256 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); | |
f453ba04 | 257 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) |
c9fb15f6 | 258 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
f453ba04 DA |
259 | return true; |
260 | return false; | |
261 | } | |
262 | EXPORT_SYMBOL(drm_helper_crtc_in_use); | |
263 | ||
86a1b9d1 BS |
264 | static void |
265 | drm_encoder_disable(struct drm_encoder *encoder) | |
266 | { | |
267 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
268 | ||
3b336ec4 SP |
269 | if (encoder->bridge) |
270 | encoder->bridge->funcs->disable(encoder->bridge); | |
271 | ||
86a1b9d1 BS |
272 | if (encoder_funcs->disable) |
273 | (*encoder_funcs->disable)(encoder); | |
274 | else | |
275 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); | |
3b336ec4 SP |
276 | |
277 | if (encoder->bridge) | |
278 | encoder->bridge->funcs->post_disable(encoder->bridge); | |
86a1b9d1 BS |
279 | } |
280 | ||
b182cc59 | 281 | static void __drm_helper_disable_unused_functions(struct drm_device *dev) |
f453ba04 DA |
282 | { |
283 | struct drm_encoder *encoder; | |
a3a0544b | 284 | struct drm_connector *connector; |
f453ba04 DA |
285 | struct drm_crtc *crtc; |
286 | ||
62ff94a5 DV |
287 | drm_warn_on_modeset_not_all_locked(dev); |
288 | ||
a3a0544b DA |
289 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
290 | if (!connector->encoder) | |
291 | continue; | |
292 | if (connector->status == connector_status_disconnected) | |
293 | connector->encoder = NULL; | |
294 | } | |
295 | ||
f453ba04 | 296 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
92971021 | 297 | if (!drm_helper_encoder_in_use(encoder)) { |
86a1b9d1 | 298 | drm_encoder_disable(encoder); |
9c552dd7 DA |
299 | /* disconnector encoder from any connector */ |
300 | encoder->crtc = NULL; | |
a3a0544b | 301 | } |
f453ba04 DA |
302 | } |
303 | ||
304 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
305 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
306 | crtc->enabled = drm_helper_crtc_in_use(crtc); | |
307 | if (!crtc->enabled) { | |
5c8d7171 AD |
308 | if (crtc_funcs->disable) |
309 | (*crtc_funcs->disable)(crtc); | |
310 | else | |
311 | (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF); | |
f453ba04 DA |
312 | crtc->fb = NULL; |
313 | } | |
314 | } | |
315 | } | |
b182cc59 DV |
316 | |
317 | /** | |
318 | * drm_helper_disable_unused_functions - disable unused objects | |
319 | * @dev: DRM device | |
320 | * | |
321 | * This function walks through the entire mode setting configuration of @dev. It | |
322 | * will remove any crtc links of unused encoders and encoder links of | |
323 | * disconnected connectors. Then it will disable all unused encoders and crtcs | |
324 | * either by calling their disable callback if available or by calling their | |
325 | * dpms callback with DRM_MODE_DPMS_OFF. | |
326 | */ | |
327 | void drm_helper_disable_unused_functions(struct drm_device *dev) | |
328 | { | |
329 | drm_modeset_lock_all(dev); | |
330 | __drm_helper_disable_unused_functions(dev); | |
331 | drm_modeset_unlock_all(dev); | |
332 | } | |
f453ba04 DA |
333 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); |
334 | ||
7bec756c JB |
335 | /* |
336 | * Check the CRTC we're going to map each output to vs. its current | |
337 | * CRTC. If they don't match, we have to disable the output and the CRTC | |
338 | * since the driver will have to re-route things. | |
339 | */ | |
340 | static void | |
341 | drm_crtc_prepare_encoders(struct drm_device *dev) | |
342 | { | |
343 | struct drm_encoder_helper_funcs *encoder_funcs; | |
344 | struct drm_encoder *encoder; | |
345 | ||
346 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
347 | encoder_funcs = encoder->helper_private; | |
348 | /* Disable unused encoders */ | |
349 | if (encoder->crtc == NULL) | |
86a1b9d1 | 350 | drm_encoder_disable(encoder); |
7bec756c JB |
351 | /* Disable encoders whose CRTC is about to change */ |
352 | if (encoder_funcs->get_crtc && | |
353 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) | |
86a1b9d1 | 354 | drm_encoder_disable(encoder); |
7bec756c JB |
355 | } |
356 | } | |
357 | ||
f453ba04 | 358 | /** |
0d4ed4c8 | 359 | * drm_crtc_helper_set_mode - internal helper to set a mode |
f453ba04 DA |
360 | * @crtc: CRTC to program |
361 | * @mode: mode to use | |
4c9287c6 AD |
362 | * @x: horizontal offset into the surface |
363 | * @y: vertical offset into the surface | |
0d4ed4c8 | 364 | * @old_fb: old framebuffer, for cleanup |
f453ba04 | 365 | * |
f453ba04 | 366 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance |
0d4ed4c8 DV |
367 | * to fixup or reject the mode prior to trying to set it. This is an internal |
368 | * helper that drivers could e.g. use to update properties that require the | |
369 | * entire output pipe to be disabled and re-enabled in a new configuration. For | |
370 | * example for changing whether audio is enabled on a hdmi link or for changing | |
371 | * panel fitter or dither attributes. It is also called by the | |
372 | * drm_crtc_helper_set_config() helper function to drive the mode setting | |
373 | * sequence. | |
f453ba04 | 374 | * |
3fcc42e0 DV |
375 | * Returns: |
376 | * True if the mode was set successfully, false otherwise. | |
f453ba04 DA |
377 | */ |
378 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, | |
379 | struct drm_display_mode *mode, | |
3c4fdcfb KH |
380 | int x, int y, |
381 | struct drm_framebuffer *old_fb) | |
f453ba04 DA |
382 | { |
383 | struct drm_device *dev = crtc->dev; | |
7e99acdc | 384 | struct drm_display_mode *adjusted_mode, saved_mode; |
f453ba04 DA |
385 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
386 | struct drm_encoder_helper_funcs *encoder_funcs; | |
387 | int saved_x, saved_y; | |
7e99acdc | 388 | bool saved_enabled; |
f453ba04 DA |
389 | struct drm_encoder *encoder; |
390 | bool ret = true; | |
391 | ||
62ff94a5 DV |
392 | drm_warn_on_modeset_not_all_locked(dev); |
393 | ||
7e99acdc | 394 | saved_enabled = crtc->enabled; |
f453ba04 | 395 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
f453ba04 DA |
396 | if (!crtc->enabled) |
397 | return true; | |
398 | ||
021a8455 | 399 | adjusted_mode = drm_mode_duplicate(dev, mode); |
7e99acdc IH |
400 | if (!adjusted_mode) { |
401 | crtc->enabled = saved_enabled; | |
6bfc56aa | 402 | return false; |
7e99acdc | 403 | } |
021a8455 | 404 | |
f453ba04 DA |
405 | saved_mode = crtc->mode; |
406 | saved_x = crtc->x; | |
407 | saved_y = crtc->y; | |
408 | ||
409 | /* Update crtc values up front so the driver can rely on them for mode | |
410 | * setting. | |
411 | */ | |
412 | crtc->mode = *mode; | |
413 | crtc->x = x; | |
414 | crtc->y = y; | |
415 | ||
f453ba04 DA |
416 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
417 | * adjust it according to limitations or connector properties, and also | |
418 | * a chance to reject the mode entirely. | |
419 | */ | |
420 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
421 | ||
422 | if (encoder->crtc != crtc) | |
423 | continue; | |
3b336ec4 SP |
424 | |
425 | if (encoder->bridge && encoder->bridge->funcs->mode_fixup) { | |
426 | ret = encoder->bridge->funcs->mode_fixup( | |
427 | encoder->bridge, mode, adjusted_mode); | |
428 | if (!ret) { | |
429 | DRM_DEBUG_KMS("Bridge fixup failed\n"); | |
430 | goto done; | |
431 | } | |
432 | } | |
433 | ||
f453ba04 DA |
434 | encoder_funcs = encoder->helper_private; |
435 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, | |
436 | adjusted_mode))) { | |
836e53d7 | 437 | DRM_DEBUG_KMS("Encoder fixup failed\n"); |
f453ba04 DA |
438 | goto done; |
439 | } | |
440 | } | |
441 | ||
442 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { | |
836e53d7 | 443 | DRM_DEBUG_KMS("CRTC fixup failed\n"); |
f453ba04 DA |
444 | goto done; |
445 | } | |
9440106b | 446 | DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); |
f453ba04 DA |
447 | |
448 | /* Prepare the encoders and CRTCs before setting the mode. */ | |
449 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
450 | ||
451 | if (encoder->crtc != crtc) | |
452 | continue; | |
3b336ec4 SP |
453 | |
454 | if (encoder->bridge) | |
455 | encoder->bridge->funcs->disable(encoder->bridge); | |
456 | ||
f453ba04 DA |
457 | encoder_funcs = encoder->helper_private; |
458 | /* Disable the encoders as the first thing we do. */ | |
459 | encoder_funcs->prepare(encoder); | |
3b336ec4 SP |
460 | |
461 | if (encoder->bridge) | |
462 | encoder->bridge->funcs->post_disable(encoder->bridge); | |
f453ba04 DA |
463 | } |
464 | ||
7bec756c JB |
465 | drm_crtc_prepare_encoders(dev); |
466 | ||
f453ba04 DA |
467 | crtc_funcs->prepare(crtc); |
468 | ||
469 | /* Set up the DPLL and any encoders state that needs to adjust or depend | |
470 | * on the DPLL. | |
471 | */ | |
5c3b82e2 CW |
472 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
473 | if (!ret) | |
474 | goto done; | |
f453ba04 DA |
475 | |
476 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
477 | ||
478 | if (encoder->crtc != crtc) | |
479 | continue; | |
480 | ||
9440106b JG |
481 | DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n", |
482 | encoder->base.id, drm_get_encoder_name(encoder), | |
483 | mode->base.id, mode->name); | |
f453ba04 DA |
484 | encoder_funcs = encoder->helper_private; |
485 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); | |
3b336ec4 SP |
486 | |
487 | if (encoder->bridge && encoder->bridge->funcs->mode_set) | |
488 | encoder->bridge->funcs->mode_set(encoder->bridge, mode, | |
489 | adjusted_mode); | |
f453ba04 DA |
490 | } |
491 | ||
492 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ | |
493 | crtc_funcs->commit(crtc); | |
494 | ||
495 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
496 | ||
497 | if (encoder->crtc != crtc) | |
498 | continue; | |
499 | ||
3b336ec4 SP |
500 | if (encoder->bridge) |
501 | encoder->bridge->funcs->pre_enable(encoder->bridge); | |
502 | ||
f453ba04 DA |
503 | encoder_funcs = encoder->helper_private; |
504 | encoder_funcs->commit(encoder); | |
505 | ||
3b336ec4 SP |
506 | if (encoder->bridge) |
507 | encoder->bridge->funcs->enable(encoder->bridge); | |
f453ba04 DA |
508 | } |
509 | ||
27641c3f MK |
510 | /* Store real post-adjustment hardware mode. */ |
511 | crtc->hwmode = *adjusted_mode; | |
512 | ||
513 | /* Calculate and store various constants which | |
514 | * are later needed by vblank and swap-completion | |
515 | * timestamping. They are derived from true hwmode. | |
516 | */ | |
545cdd55 | 517 | drm_calc_timestamping_constants(crtc, &crtc->hwmode); |
27641c3f | 518 | |
f453ba04 DA |
519 | /* FIXME: add subpixel order */ |
520 | done: | |
021a8455 | 521 | drm_mode_destroy(dev, adjusted_mode); |
f453ba04 | 522 | if (!ret) { |
7e99acdc | 523 | crtc->enabled = saved_enabled; |
f453ba04 DA |
524 | crtc->mode = saved_mode; |
525 | crtc->x = saved_x; | |
526 | crtc->y = saved_y; | |
527 | } | |
528 | ||
529 | return ret; | |
530 | } | |
531 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); | |
532 | ||
533 | ||
6eebd6bb CW |
534 | static int |
535 | drm_crtc_helper_disable(struct drm_crtc *crtc) | |
536 | { | |
537 | struct drm_device *dev = crtc->dev; | |
538 | struct drm_connector *connector; | |
539 | struct drm_encoder *encoder; | |
540 | ||
541 | /* Decouple all encoders and their attached connectors from this crtc */ | |
542 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
543 | if (encoder->crtc != crtc) | |
544 | continue; | |
545 | ||
546 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
547 | if (connector->encoder != encoder) | |
548 | continue; | |
549 | ||
550 | connector->encoder = NULL; | |
a6ad6230 TR |
551 | |
552 | /* | |
553 | * drm_helper_disable_unused_functions() ought to be | |
554 | * doing this, but since we've decoupled the encoder | |
555 | * from the connector above, the required connection | |
556 | * between them is henceforth no longer available. | |
557 | */ | |
558 | connector->dpms = DRM_MODE_DPMS_OFF; | |
6eebd6bb CW |
559 | } |
560 | } | |
561 | ||
b182cc59 | 562 | __drm_helper_disable_unused_functions(dev); |
6eebd6bb CW |
563 | return 0; |
564 | } | |
565 | ||
f453ba04 DA |
566 | /** |
567 | * drm_crtc_helper_set_config - set a new config from userspace | |
0d4ed4c8 | 568 | * @set: mode set configuration |
f453ba04 | 569 | * |
0d4ed4c8 DV |
570 | * Setup a new configuration, provided by the upper layers (either an ioctl call |
571 | * from userspace or internally e.g. from the fbdev suppport code) in @set, and | |
572 | * enable it. This is the main helper functions for drivers that implement | |
573 | * kernel mode setting with the crtc helper functions and the assorted | |
574 | * ->prepare(), ->modeset() and ->commit() helper callbacks. | |
f453ba04 | 575 | * |
3fcc42e0 DV |
576 | * Returns: |
577 | * Returns 0 on success, negative errno numbers on failure. | |
f453ba04 DA |
578 | */ |
579 | int drm_crtc_helper_set_config(struct drm_mode_set *set) | |
580 | { | |
581 | struct drm_device *dev; | |
02ee4e94 | 582 | struct drm_crtc *new_crtc; |
e67aae79 | 583 | struct drm_encoder *save_encoders, *new_encoder, *encoder; |
4cb72b17 JB |
584 | bool mode_changed = false; /* if true do a full mode set */ |
585 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ | |
e67aae79 | 586 | struct drm_connector *save_connectors, *connector; |
f453ba04 DA |
587 | int count = 0, ro, fail = 0; |
588 | struct drm_crtc_helper_funcs *crtc_funcs; | |
c5006cfe | 589 | struct drm_mode_set save_set; |
4a1b0714 | 590 | int ret; |
bf9dc102 | 591 | int i; |
f453ba04 | 592 | |
58367ed6 | 593 | DRM_DEBUG_KMS("\n"); |
f453ba04 | 594 | |
e58de880 DV |
595 | BUG_ON(!set); |
596 | BUG_ON(!set->crtc); | |
597 | BUG_ON(!set->crtc->helper_private); | |
f453ba04 | 598 | |
e58de880 DV |
599 | /* Enforce sane interface api - has been abused by the fb helper. */ |
600 | BUG_ON(!set->mode && set->fb); | |
601 | BUG_ON(set->fb && set->num_connectors == 0); | |
f453ba04 DA |
602 | |
603 | crtc_funcs = set->crtc->helper_private; | |
604 | ||
ede3ff52 CW |
605 | if (!set->mode) |
606 | set->fb = NULL; | |
607 | ||
9440106b JG |
608 | if (set->fb) { |
609 | DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n", | |
610 | set->crtc->base.id, set->fb->base.id, | |
611 | (int)set->num_connectors, set->x, set->y); | |
612 | } else { | |
ede3ff52 | 613 | DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id); |
6eebd6bb | 614 | return drm_crtc_helper_disable(set->crtc); |
9440106b | 615 | } |
f453ba04 DA |
616 | |
617 | dev = set->crtc->dev; | |
618 | ||
62ff94a5 DV |
619 | drm_warn_on_modeset_not_all_locked(dev); |
620 | ||
02ee4e94 IH |
621 | /* |
622 | * Allocate space for the backup of all (non-pointer) encoder and | |
623 | * connector data. | |
624 | */ | |
e67aae79 MM |
625 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
626 | sizeof(struct drm_encoder), GFP_KERNEL); | |
02ee4e94 | 627 | if (!save_encoders) |
f453ba04 | 628 | return -ENOMEM; |
f453ba04 | 629 | |
e67aae79 MM |
630 | save_connectors = kzalloc(dev->mode_config.num_connector * |
631 | sizeof(struct drm_connector), GFP_KERNEL); | |
632 | if (!save_connectors) { | |
e67aae79 MM |
633 | kfree(save_encoders); |
634 | return -ENOMEM; | |
635 | } | |
636 | ||
02ee4e94 IH |
637 | /* |
638 | * Copy data. Note that driver private data is not affected. | |
e67aae79 MM |
639 | * Should anything bad happen only the expected state is |
640 | * restored, not the drivers personal bookkeeping. | |
641 | */ | |
e67aae79 MM |
642 | count = 0; |
643 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
644 | save_encoders[count++] = *encoder; | |
645 | } | |
646 | ||
647 | count = 0; | |
648 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
649 | save_connectors[count++] = *connector; | |
650 | } | |
651 | ||
c5006cfe JB |
652 | save_set.crtc = set->crtc; |
653 | save_set.mode = &set->crtc->mode; | |
654 | save_set.x = set->crtc->x; | |
655 | save_set.y = set->crtc->y; | |
656 | save_set.fb = set->crtc->fb; | |
657 | ||
f453ba04 DA |
658 | /* We should be able to check here if the fb has the same properties |
659 | * and then just flip_or_move it */ | |
660 | if (set->crtc->fb != set->fb) { | |
712531bf | 661 | /* If we have no fb then treat it as a full mode set */ |
7bec756c | 662 | if (set->crtc->fb == NULL) { |
58367ed6 | 663 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
712531bf | 664 | mode_changed = true; |
4cb72b17 JB |
665 | } else if (set->fb == NULL) { |
666 | mode_changed = true; | |
ce83adf7 LP |
667 | } else if (set->fb->pixel_format != |
668 | set->crtc->fb->pixel_format) { | |
669 | mode_changed = true; | |
8dff4742 | 670 | } else |
712531bf | 671 | fb_changed = true; |
f453ba04 DA |
672 | } |
673 | ||
674 | if (set->x != set->crtc->x || set->y != set->crtc->y) | |
712531bf | 675 | fb_changed = true; |
f453ba04 DA |
676 | |
677 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { | |
58367ed6 | 678 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
f453ba04 DA |
679 | drm_mode_debug_printmodeline(&set->crtc->mode); |
680 | drm_mode_debug_printmodeline(set->mode); | |
712531bf | 681 | mode_changed = true; |
f453ba04 DA |
682 | } |
683 | ||
684 | /* a) traverse passed in connector list and get encoders for them */ | |
685 | count = 0; | |
686 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
687 | struct drm_connector_helper_funcs *connector_funcs = | |
688 | connector->helper_private; | |
f453ba04 DA |
689 | new_encoder = connector->encoder; |
690 | for (ro = 0; ro < set->num_connectors; ro++) { | |
691 | if (set->connectors[ro] == connector) { | |
692 | new_encoder = connector_funcs->best_encoder(connector); | |
693 | /* if we can't get an encoder for a connector | |
694 | we are setting now - then fail */ | |
695 | if (new_encoder == NULL) | |
696 | /* don't break so fail path works correct */ | |
697 | fail = 1; | |
698 | break; | |
25f397a4 DV |
699 | |
700 | if (connector->dpms != DRM_MODE_DPMS_ON) { | |
701 | DRM_DEBUG_KMS("connector dpms not on, full mode switch\n"); | |
702 | mode_changed = true; | |
703 | } | |
f453ba04 DA |
704 | } |
705 | } | |
706 | ||
707 | if (new_encoder != connector->encoder) { | |
58367ed6 | 708 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
712531bf | 709 | mode_changed = true; |
ff846ab7 MM |
710 | /* If the encoder is reused for another connector, then |
711 | * the appropriate crtc will be set later. | |
712 | */ | |
ff6fdbed MM |
713 | if (connector->encoder) |
714 | connector->encoder->crtc = NULL; | |
f453ba04 DA |
715 | connector->encoder = new_encoder; |
716 | } | |
717 | } | |
718 | ||
719 | if (fail) { | |
720 | ret = -EINVAL; | |
e67aae79 | 721 | goto fail; |
f453ba04 DA |
722 | } |
723 | ||
724 | count = 0; | |
725 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
726 | if (!connector->encoder) | |
727 | continue; | |
728 | ||
f453ba04 DA |
729 | if (connector->encoder->crtc == set->crtc) |
730 | new_crtc = NULL; | |
731 | else | |
732 | new_crtc = connector->encoder->crtc; | |
733 | ||
734 | for (ro = 0; ro < set->num_connectors; ro++) { | |
735 | if (set->connectors[ro] == connector) | |
736 | new_crtc = set->crtc; | |
737 | } | |
7bec756c JB |
738 | |
739 | /* Make sure the new CRTC will work with the encoder */ | |
740 | if (new_crtc && | |
741 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { | |
742 | ret = -EINVAL; | |
e67aae79 | 743 | goto fail; |
7bec756c | 744 | } |
f453ba04 | 745 | if (new_crtc != connector->encoder->crtc) { |
58367ed6 | 746 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
712531bf | 747 | mode_changed = true; |
f453ba04 DA |
748 | connector->encoder->crtc = new_crtc; |
749 | } | |
9440106b JG |
750 | if (new_crtc) { |
751 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n", | |
752 | connector->base.id, drm_get_connector_name(connector), | |
753 | new_crtc->base.id); | |
754 | } else { | |
755 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n", | |
756 | connector->base.id, drm_get_connector_name(connector)); | |
757 | } | |
f453ba04 DA |
758 | } |
759 | ||
760 | /* mode_set_base is not a required function */ | |
712531bf JB |
761 | if (fb_changed && !crtc_funcs->mode_set_base) |
762 | mode_changed = true; | |
f453ba04 | 763 | |
712531bf | 764 | if (mode_changed) { |
48b1f5dd | 765 | if (drm_helper_crtc_in_use(set->crtc)) { |
58367ed6 ZY |
766 | DRM_DEBUG_KMS("attempting to set mode from" |
767 | " userspace\n"); | |
f453ba04 | 768 | drm_mode_debug_printmodeline(set->mode); |
356ad3cd | 769 | set->crtc->fb = set->fb; |
f453ba04 | 770 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
3c4fdcfb | 771 | set->x, set->y, |
bec2eac3 | 772 | save_set.fb)) { |
9440106b JG |
773 | DRM_ERROR("failed to set mode on [CRTC:%d]\n", |
774 | set->crtc->base.id); | |
bec2eac3 | 775 | set->crtc->fb = save_set.fb; |
f453ba04 | 776 | ret = -EINVAL; |
e67aae79 | 777 | goto fail; |
f453ba04 | 778 | } |
25f397a4 DV |
779 | DRM_DEBUG_KMS("Setting connector DPMS state to on\n"); |
780 | for (i = 0; i < set->num_connectors; i++) { | |
781 | DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id, | |
782 | drm_get_connector_name(set->connectors[i])); | |
783 | set->connectors[i]->funcs->dpms(set->connectors[i], DRM_MODE_DPMS_ON); | |
784 | } | |
f453ba04 | 785 | } |
b182cc59 | 786 | __drm_helper_disable_unused_functions(dev); |
712531bf | 787 | } else if (fb_changed) { |
9b1596af BS |
788 | set->crtc->x = set->x; |
789 | set->crtc->y = set->y; | |
fc50a890 | 790 | set->crtc->fb = set->fb; |
5c3b82e2 | 791 | ret = crtc_funcs->mode_set_base(set->crtc, |
bec2eac3 | 792 | set->x, set->y, save_set.fb); |
0ba41e44 | 793 | if (ret != 0) { |
fbce4064 IH |
794 | set->crtc->x = save_set.x; |
795 | set->crtc->y = save_set.y; | |
bec2eac3 | 796 | set->crtc->fb = save_set.fb; |
e67aae79 | 797 | goto fail; |
0ba41e44 | 798 | } |
f453ba04 DA |
799 | } |
800 | ||
e67aae79 | 801 | kfree(save_connectors); |
f453ba04 | 802 | kfree(save_encoders); |
f453ba04 DA |
803 | return 0; |
804 | ||
e67aae79 MM |
805 | fail: |
806 | /* Restore all previous data. */ | |
e67aae79 MM |
807 | count = 0; |
808 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
809 | *encoder = save_encoders[count++]; | |
e62fb64e | 810 | } |
e67aae79 | 811 | |
f453ba04 DA |
812 | count = 0; |
813 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
e67aae79 | 814 | *connector = save_connectors[count++]; |
f453ba04 | 815 | } |
e67aae79 | 816 | |
c5006cfe JB |
817 | /* Try to restore the config */ |
818 | if (mode_changed && | |
819 | !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x, | |
820 | save_set.y, save_set.fb)) | |
821 | DRM_ERROR("failed to restore config after modeset failure\n"); | |
822 | ||
e67aae79 | 823 | kfree(save_connectors); |
f453ba04 DA |
824 | kfree(save_encoders); |
825 | return ret; | |
826 | } | |
827 | EXPORT_SYMBOL(drm_crtc_helper_set_config); | |
828 | ||
c9fb15f6 KP |
829 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
830 | { | |
831 | int dpms = DRM_MODE_DPMS_OFF; | |
832 | struct drm_connector *connector; | |
833 | struct drm_device *dev = encoder->dev; | |
834 | ||
835 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
836 | if (connector->encoder == encoder) | |
837 | if (connector->dpms < dpms) | |
838 | dpms = connector->dpms; | |
839 | return dpms; | |
840 | } | |
841 | ||
3b336ec4 SP |
842 | /* Helper which handles bridge ordering around encoder dpms */ |
843 | static void drm_helper_encoder_dpms(struct drm_encoder *encoder, int mode) | |
844 | { | |
845 | struct drm_bridge *bridge = encoder->bridge; | |
846 | struct drm_encoder_helper_funcs *encoder_funcs; | |
847 | ||
848 | if (bridge) { | |
849 | if (mode == DRM_MODE_DPMS_ON) | |
850 | bridge->funcs->pre_enable(bridge); | |
851 | else | |
852 | bridge->funcs->disable(bridge); | |
853 | } | |
854 | ||
855 | encoder_funcs = encoder->helper_private; | |
856 | if (encoder_funcs->dpms) | |
857 | encoder_funcs->dpms(encoder, mode); | |
858 | ||
859 | if (bridge) { | |
860 | if (mode == DRM_MODE_DPMS_ON) | |
861 | bridge->funcs->enable(bridge); | |
862 | else | |
863 | bridge->funcs->post_disable(bridge); | |
864 | } | |
865 | } | |
866 | ||
c9fb15f6 KP |
867 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) |
868 | { | |
869 | int dpms = DRM_MODE_DPMS_OFF; | |
870 | struct drm_connector *connector; | |
871 | struct drm_device *dev = crtc->dev; | |
872 | ||
873 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
874 | if (connector->encoder && connector->encoder->crtc == crtc) | |
875 | if (connector->dpms < dpms) | |
876 | dpms = connector->dpms; | |
877 | return dpms; | |
878 | } | |
879 | ||
880 | /** | |
0d4ed4c8 DV |
881 | * drm_helper_connector_dpms() - connector dpms helper implementation |
882 | * @connector: affected connector | |
883 | * @mode: DPMS mode | |
c9fb15f6 | 884 | * |
0d4ed4c8 DV |
885 | * This is the main helper function provided by the crtc helper framework for |
886 | * implementing the DPMS connector attribute. It computes the new desired DPMS | |
887 | * state for all encoders and crtcs in the output mesh and calls the ->dpms() | |
888 | * callback provided by the driver appropriately. | |
c9fb15f6 KP |
889 | */ |
890 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) | |
891 | { | |
892 | struct drm_encoder *encoder = connector->encoder; | |
893 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; | |
3b336ec4 | 894 | int old_dpms, encoder_dpms = DRM_MODE_DPMS_OFF; |
c9fb15f6 KP |
895 | |
896 | if (mode == connector->dpms) | |
897 | return; | |
898 | ||
899 | old_dpms = connector->dpms; | |
900 | connector->dpms = mode; | |
901 | ||
3b336ec4 SP |
902 | if (encoder) |
903 | encoder_dpms = drm_helper_choose_encoder_dpms(encoder); | |
904 | ||
c9fb15f6 KP |
905 | /* from off to on, do crtc then encoder */ |
906 | if (mode < old_dpms) { | |
907 | if (crtc) { | |
908 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
909 | if (crtc_funcs->dpms) | |
910 | (*crtc_funcs->dpms) (crtc, | |
911 | drm_helper_choose_crtc_dpms(crtc)); | |
912 | } | |
3b336ec4 SP |
913 | if (encoder) |
914 | drm_helper_encoder_dpms(encoder, encoder_dpms); | |
c9fb15f6 KP |
915 | } |
916 | ||
917 | /* from on to off, do encoder then crtc */ | |
918 | if (mode > old_dpms) { | |
3b336ec4 SP |
919 | if (encoder) |
920 | drm_helper_encoder_dpms(encoder, encoder_dpms); | |
c9fb15f6 KP |
921 | if (crtc) { |
922 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
923 | if (crtc_funcs->dpms) | |
924 | (*crtc_funcs->dpms) (crtc, | |
925 | drm_helper_choose_crtc_dpms(crtc)); | |
926 | } | |
927 | } | |
928 | ||
929 | return; | |
930 | } | |
931 | EXPORT_SYMBOL(drm_helper_connector_dpms); | |
932 | ||
3fcc42e0 DV |
933 | /** |
934 | * drm_helper_mode_fill_fb_struct - fill out framebuffer metadata | |
935 | * @fb: drm_framebuffer object to fill out | |
936 | * @mode_cmd: metadata from the userspace fb creation request | |
937 | * | |
938 | * This helper can be used in a drivers fb_create callback to pre-fill the fb's | |
939 | * metadata fields. | |
940 | */ | |
9fd93784 DV |
941 | void drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
942 | struct drm_mode_fb_cmd2 *mode_cmd) | |
f453ba04 | 943 | { |
01f2c773 VS |
944 | int i; |
945 | ||
f453ba04 DA |
946 | fb->width = mode_cmd->width; |
947 | fb->height = mode_cmd->height; | |
01f2c773 VS |
948 | for (i = 0; i < 4; i++) { |
949 | fb->pitches[i] = mode_cmd->pitches[i]; | |
950 | fb->offsets[i] = mode_cmd->offsets[i]; | |
951 | } | |
248dbc23 | 952 | drm_fb_get_bpp_depth(mode_cmd->pixel_format, &fb->depth, |
308e5bcb JB |
953 | &fb->bits_per_pixel); |
954 | fb->pixel_format = mode_cmd->pixel_format; | |
f453ba04 DA |
955 | } |
956 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); | |
957 | ||
aa4cd910 DV |
958 | /** |
959 | * drm_helper_resume_force_mode - force-restore mode setting configuration | |
960 | * @dev: drm_device which should be restored | |
961 | * | |
962 | * Drivers which use the mode setting helpers can use this function to | |
963 | * force-restore the mode setting configuration e.g. on resume or when something | |
964 | * else might have trampled over the hw state (like some overzealous old BIOSen | |
965 | * tended to do). | |
00d762cb DV |
966 | * |
967 | * This helper doesn't provide a error return value since restoring the old | |
968 | * config should never fail due to resource allocation issues since the driver | |
969 | * has successfully set the restored configuration already. Hence this should | |
970 | * boil down to the equivalent of a few dpms on calls, which also don't provide | |
971 | * an error code. | |
972 | * | |
973 | * Drivers where simply restoring an old configuration again might fail (e.g. | |
974 | * due to slight differences in allocating shared resources when the | |
975 | * configuration is restored in a different order than when userspace set it up) | |
976 | * need to use their own restore logic. | |
aa4cd910 | 977 | */ |
00d762cb | 978 | void drm_helper_resume_force_mode(struct drm_device *dev) |
f453ba04 DA |
979 | { |
980 | struct drm_crtc *crtc; | |
89347bb8 | 981 | struct drm_encoder *encoder; |
89347bb8 | 982 | struct drm_crtc_helper_funcs *crtc_funcs; |
00d762cb DV |
983 | int encoder_dpms; |
984 | bool ret; | |
f453ba04 DA |
985 | |
986 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
987 | ||
988 | if (!crtc->enabled) | |
989 | continue; | |
990 | ||
3c4fdcfb KH |
991 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
992 | crtc->x, crtc->y, crtc->fb); | |
f453ba04 | 993 | |
00d762cb | 994 | /* Restoring the old config should never fail! */ |
f453ba04 DA |
995 | if (ret == false) |
996 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); | |
89347bb8 DJ |
997 | |
998 | /* Turn off outputs that were already powered off */ | |
999 | if (drm_helper_choose_crtc_dpms(crtc)) { | |
1000 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
1001 | ||
1002 | if(encoder->crtc != crtc) | |
1003 | continue; | |
1004 | ||
3b336ec4 SP |
1005 | encoder_dpms = drm_helper_choose_encoder_dpms( |
1006 | encoder); | |
1007 | ||
1008 | drm_helper_encoder_dpms(encoder, encoder_dpms); | |
89347bb8 | 1009 | } |
817e631e CW |
1010 | |
1011 | crtc_funcs = crtc->helper_private; | |
1012 | if (crtc_funcs->dpms) | |
1013 | (*crtc_funcs->dpms) (crtc, | |
1014 | drm_helper_choose_crtc_dpms(crtc)); | |
89347bb8 | 1015 | } |
f453ba04 | 1016 | } |
00d762cb | 1017 | |
af4fcb57 | 1018 | /* disable the unused connectors while restoring the modesetting */ |
b182cc59 | 1019 | __drm_helper_disable_unused_functions(dev); |
f453ba04 DA |
1020 | } |
1021 | EXPORT_SYMBOL(drm_helper_resume_force_mode); | |
eb1f8e4f | 1022 | |
3fcc42e0 DV |
1023 | /** |
1024 | * drm_kms_helper_hotplug_event - fire off KMS hotplug events | |
1025 | * @dev: drm_device whose connector state changed | |
1026 | * | |
1027 | * This function fires off the uevent for userspace and also calls the | |
1028 | * output_poll_changed function, which is most commonly used to inform the fbdev | |
1029 | * emulation code and allow it to update the fbcon output configuration. | |
1030 | * | |
1031 | * Drivers should call this from their hotplug handling code when a change is | |
1032 | * detected. Note that this function does not do any output detection of its | |
1033 | * own, like drm_helper_hpd_irq_event() does - this is assumed to be done by the | |
1034 | * driver already. | |
1035 | * | |
1036 | * This function must be called from process context with no mode | |
1037 | * setting locks held. | |
1038 | */ | |
3d3683f0 DV |
1039 | void drm_kms_helper_hotplug_event(struct drm_device *dev) |
1040 | { | |
1041 | /* send a uevent + call fbdev */ | |
1042 | drm_sysfs_hotplug_event(dev); | |
1043 | if (dev->mode_config.funcs->output_poll_changed) | |
1044 | dev->mode_config.funcs->output_poll_changed(dev); | |
1045 | } | |
1046 | EXPORT_SYMBOL(drm_kms_helper_hotplug_event); | |
1047 | ||
eb1f8e4f | 1048 | #define DRM_OUTPUT_POLL_PERIOD (10*HZ) |
991ea75c | 1049 | static void output_poll_execute(struct work_struct *work) |
eb1f8e4f | 1050 | { |
991ea75c TH |
1051 | struct delayed_work *delayed_work = to_delayed_work(work); |
1052 | struct drm_device *dev = container_of(delayed_work, struct drm_device, mode_config.output_poll_work); | |
eb1f8e4f | 1053 | struct drm_connector *connector; |
c5027dec | 1054 | enum drm_connector_status old_status; |
d482e5fa | 1055 | bool repoll = false, changed = false; |
eb1f8e4f | 1056 | |
e58f637b CW |
1057 | if (!drm_kms_helper_poll) |
1058 | return; | |
1059 | ||
eb1f8e4f DA |
1060 | mutex_lock(&dev->mode_config.mutex); |
1061 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
1062 | ||
11e68685 DV |
1063 | /* Ignore forced connectors. */ |
1064 | if (connector->force) | |
1065 | continue; | |
1066 | ||
816da85a DV |
1067 | /* Ignore HPD capable connectors and connectors where we don't |
1068 | * want any hotplug detection at all for polling. */ | |
1069 | if (!connector->polled || connector->polled == DRM_CONNECTOR_POLL_HPD) | |
eb1f8e4f DA |
1070 | continue; |
1071 | ||
a4f968d8 | 1072 | repoll = true; |
eb1f8e4f DA |
1073 | |
1074 | old_status = connector->status; | |
1075 | /* if we are connected and don't want to poll for disconnect | |
1076 | skip it */ | |
1077 | if (old_status == connector_status_connected && | |
816da85a | 1078 | !(connector->polled & DRM_CONNECTOR_POLL_DISCONNECT)) |
eb1f8e4f DA |
1079 | continue; |
1080 | ||
c5027dec | 1081 | connector->status = connector->funcs->detect(connector, false); |
b2dfcae3 LD |
1082 | if (old_status != connector->status) { |
1083 | const char *old, *new; | |
1084 | ||
1085 | old = drm_get_connector_status_name(old_status); | |
1086 | new = drm_get_connector_status_name(connector->status); | |
1087 | ||
1088 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] " | |
1089 | "status updated from %s to %s\n", | |
1090 | connector->base.id, | |
1091 | drm_get_connector_name(connector), | |
1092 | old, new); | |
1093 | ||
eb1f8e4f | 1094 | changed = true; |
b2dfcae3 | 1095 | } |
eb1f8e4f DA |
1096 | } |
1097 | ||
1098 | mutex_unlock(&dev->mode_config.mutex); | |
1099 | ||
3d3683f0 DV |
1100 | if (changed) |
1101 | drm_kms_helper_hotplug_event(dev); | |
eb1f8e4f | 1102 | |
9a919c46 | 1103 | if (repoll) |
3b07e9ca | 1104 | schedule_delayed_work(delayed_work, DRM_OUTPUT_POLL_PERIOD); |
eb1f8e4f DA |
1105 | } |
1106 | ||
3fcc42e0 DV |
1107 | /** |
1108 | * drm_kms_helper_poll_disable - disable output polling | |
1109 | * @dev: drm_device | |
1110 | * | |
1111 | * This function disables the output polling work. | |
1112 | * | |
1113 | * Drivers can call this helper from their device suspend implementation. It is | |
1114 | * not an error to call this even when output polling isn't enabled or arlready | |
1115 | * disabled. | |
1116 | */ | |
fbf81762 DA |
1117 | void drm_kms_helper_poll_disable(struct drm_device *dev) |
1118 | { | |
1119 | if (!dev->mode_config.poll_enabled) | |
1120 | return; | |
991ea75c | 1121 | cancel_delayed_work_sync(&dev->mode_config.output_poll_work); |
fbf81762 DA |
1122 | } |
1123 | EXPORT_SYMBOL(drm_kms_helper_poll_disable); | |
1124 | ||
3fcc42e0 DV |
1125 | /** |
1126 | * drm_kms_helper_poll_enable - re-enable output polling. | |
1127 | * @dev: drm_device | |
1128 | * | |
1129 | * This function re-enables the output polling work. | |
1130 | * | |
1131 | * Drivers can call this helper from their device resume implementation. It is | |
1132 | * an error to call this when the output polling support has not yet been set | |
1133 | * up. | |
1134 | */ | |
fbf81762 | 1135 | void drm_kms_helper_poll_enable(struct drm_device *dev) |
eb1f8e4f | 1136 | { |
eb1f8e4f | 1137 | bool poll = false; |
fbf81762 | 1138 | struct drm_connector *connector; |
eb1f8e4f | 1139 | |
e58f637b CW |
1140 | if (!dev->mode_config.poll_enabled || !drm_kms_helper_poll) |
1141 | return; | |
1142 | ||
eb1f8e4f | 1143 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
a4f968d8 DV |
1144 | if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT | |
1145 | DRM_CONNECTOR_POLL_DISCONNECT)) | |
eb1f8e4f DA |
1146 | poll = true; |
1147 | } | |
eb1f8e4f | 1148 | |
9a919c46 | 1149 | if (poll) |
3b07e9ca | 1150 | schedule_delayed_work(&dev->mode_config.output_poll_work, DRM_OUTPUT_POLL_PERIOD); |
eb1f8e4f | 1151 | } |
fbf81762 DA |
1152 | EXPORT_SYMBOL(drm_kms_helper_poll_enable); |
1153 | ||
3fcc42e0 DV |
1154 | /** |
1155 | * drm_kms_helper_poll_init - initialize and enable output polling | |
1156 | * @dev: drm_device | |
1157 | * | |
1158 | * This function intializes and then also enables output polling support for | |
1159 | * @dev. Drivers which do not have reliable hotplug support in hardware can use | |
1160 | * this helper infrastructure to regularly poll such connectors for changes in | |
1161 | * their connection state. | |
1162 | * | |
1163 | * Drivers can control which connectors are polled by setting the | |
1164 | * DRM_CONNECTOR_POLL_CONNECT and DRM_CONNECTOR_POLL_DISCONNECT flags. On | |
1165 | * connectors where probing live outputs can result in visual distortion drivers | |
1166 | * should not set the DRM_CONNECTOR_POLL_DISCONNECT flag to avoid this. | |
1167 | * Connectors which have no flag or only DRM_CONNECTOR_POLL_HPD set are | |
1168 | * completely ignored by the polling logic. | |
1169 | * | |
1170 | * Note that a connector can be both polled and probed from the hotplug handler, | |
1171 | * in case the hotplug interrupt is known to be unreliable. | |
1172 | */ | |
fbf81762 DA |
1173 | void drm_kms_helper_poll_init(struct drm_device *dev) |
1174 | { | |
991ea75c | 1175 | INIT_DELAYED_WORK(&dev->mode_config.output_poll_work, output_poll_execute); |
fbf81762 DA |
1176 | dev->mode_config.poll_enabled = true; |
1177 | ||
1178 | drm_kms_helper_poll_enable(dev); | |
1179 | } | |
eb1f8e4f DA |
1180 | EXPORT_SYMBOL(drm_kms_helper_poll_init); |
1181 | ||
3fcc42e0 DV |
1182 | /** |
1183 | * drm_kms_helper_poll_fini - disable output polling and clean it up | |
1184 | * @dev: drm_device | |
1185 | */ | |
eb1f8e4f DA |
1186 | void drm_kms_helper_poll_fini(struct drm_device *dev) |
1187 | { | |
fbf81762 | 1188 | drm_kms_helper_poll_disable(dev); |
eb1f8e4f DA |
1189 | } |
1190 | EXPORT_SYMBOL(drm_kms_helper_poll_fini); | |
1191 | ||
3fcc42e0 DV |
1192 | /** |
1193 | * drm_helper_hpd_irq_event - hotplug processing | |
1194 | * @dev: drm_device | |
1195 | * | |
1196 | * Drivers can use this helper function to run a detect cycle on all connectors | |
1197 | * which have the DRM_CONNECTOR_POLL_HPD flag set in their &polled member. All | |
1198 | * other connectors are ignored, which is useful to avoid reprobing fixed | |
1199 | * panels. | |
1200 | * | |
1201 | * This helper function is useful for drivers which can't or don't track hotplug | |
1202 | * interrupts for each connector. | |
1203 | * | |
1204 | * Drivers which support hotplug interrupts for each connector individually and | |
1205 | * which have a more fine-grained detect logic should bypass this code and | |
1206 | * directly call drm_kms_helper_hotplug_event() in case the connector state | |
1207 | * changed. | |
1208 | * | |
1209 | * This function must be called from process context with no mode | |
1210 | * setting locks held. | |
1211 | * | |
1212 | * Note that a connector can be both polled and probed from the hotplug handler, | |
1213 | * in case the hotplug interrupt is known to be unreliable. | |
1214 | */ | |
b8206d39 | 1215 | bool drm_helper_hpd_irq_event(struct drm_device *dev) |
eb1f8e4f | 1216 | { |
816da85a DV |
1217 | struct drm_connector *connector; |
1218 | enum drm_connector_status old_status; | |
1219 | bool changed = false; | |
1220 | ||
eb1f8e4f | 1221 | if (!dev->mode_config.poll_enabled) |
b8206d39 | 1222 | return false; |
e58f637b | 1223 | |
816da85a DV |
1224 | mutex_lock(&dev->mode_config.mutex); |
1225 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
1226 | ||
1227 | /* Only handle HPD capable connectors. */ | |
1228 | if (!(connector->polled & DRM_CONNECTOR_POLL_HPD)) | |
1229 | continue; | |
1230 | ||
1231 | old_status = connector->status; | |
1232 | ||
1233 | connector->status = connector->funcs->detect(connector, false); | |
ed7951dc | 1234 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %s to %s\n", |
816da85a DV |
1235 | connector->base.id, |
1236 | drm_get_connector_name(connector), | |
ed7951dc LD |
1237 | drm_get_connector_status_name(old_status), |
1238 | drm_get_connector_status_name(connector->status)); | |
816da85a DV |
1239 | if (old_status != connector->status) |
1240 | changed = true; | |
1241 | } | |
1242 | ||
1243 | mutex_unlock(&dev->mode_config.mutex); | |
1244 | ||
1245 | if (changed) | |
1246 | drm_kms_helper_hotplug_event(dev); | |
b8206d39 MAL |
1247 | |
1248 | return changed; | |
816da85a | 1249 | } |
eb1f8e4f | 1250 | EXPORT_SYMBOL(drm_helper_hpd_irq_event); |