Commit | Line | Data |
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52217195 DV |
1 | /* |
2 | * Copyright (c) 2016 Intel Corporation | |
3 | * | |
4 | * Permission to use, copy, modify, distribute, and sell this software and its | |
5 | * documentation for any purpose is hereby granted without fee, provided that | |
6 | * the above copyright notice appear in all copies and that both that copyright | |
7 | * notice and this permission notice appear in supporting documentation, and | |
8 | * that the name of the copyright holders not be used in advertising or | |
9 | * publicity pertaining to distribution of the software without specific, | |
10 | * written prior permission. The copyright holders make no representations | |
11 | * about the suitability of this software for any purpose. It is provided "as | |
12 | * is" without express or implied warranty. | |
13 | * | |
14 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
15 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
16 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
17 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
18 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
19 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
20 | * OF THIS SOFTWARE. | |
21 | */ | |
22 | ||
52217195 DV |
23 | #include <drm/drm_connector.h> |
24 | #include <drm/drm_edid.h> | |
9338203c | 25 | #include <drm/drm_encoder.h> |
8d70f395 | 26 | #include <drm/drm_utils.h> |
99f45e32 DV |
27 | #include <drm/drm_print.h> |
28 | #include <drm/drm_drv.h> | |
29 | #include <drm/drm_file.h> | |
30 | ||
31 | #include <linux/uaccess.h> | |
52217195 DV |
32 | |
33 | #include "drm_crtc_internal.h" | |
34 | #include "drm_internal.h" | |
35 | ||
ae2a6da8 DV |
36 | /** |
37 | * DOC: overview | |
38 | * | |
39 | * In DRM connectors are the general abstraction for display sinks, and include | |
40 | * als fixed panels or anything else that can display pixels in some form. As | |
41 | * opposed to all other KMS objects representing hardware (like CRTC, encoder or | |
42 | * plane abstractions) connectors can be hotplugged and unplugged at runtime. | |
ad093607 TR |
43 | * Hence they are reference-counted using drm_connector_get() and |
44 | * drm_connector_put(). | |
ae2a6da8 | 45 | * |
d574528a DV |
46 | * KMS driver must create, initialize, register and attach at a &struct |
47 | * drm_connector for each such sink. The instance is created as other KMS | |
aec97460 DV |
48 | * objects and initialized by setting the following fields. The connector is |
49 | * initialized with a call to drm_connector_init() with a pointer to the | |
50 | * &struct drm_connector_funcs and a connector type, and then exposed to | |
51 | * userspace with a call to drm_connector_register(). | |
ae2a6da8 DV |
52 | * |
53 | * Connectors must be attached to an encoder to be used. For devices that map | |
54 | * connectors to encoders 1:1, the connector should be attached at | |
cde4c44d | 55 | * initialization time with a call to drm_connector_attach_encoder(). The |
d574528a | 56 | * driver must also set the &drm_connector.encoder field to point to the |
ae2a6da8 DV |
57 | * attached encoder. |
58 | * | |
59 | * For connectors which are not fixed (like built-in panels) the driver needs to | |
60 | * support hotplug notifications. The simplest way to do that is by using the | |
61 | * probe helpers, see drm_kms_helper_poll_init() for connectors which don't have | |
62 | * hardware support for hotplug interrupts. Connectors with hardware hotplug | |
63 | * support can instead use e.g. drm_helper_hpd_irq_event(). | |
64 | */ | |
65 | ||
52217195 DV |
66 | struct drm_conn_prop_enum_list { |
67 | int type; | |
68 | const char *name; | |
69 | struct ida ida; | |
70 | }; | |
71 | ||
72 | /* | |
73 | * Connector and encoder types. | |
74 | */ | |
75 | static struct drm_conn_prop_enum_list drm_connector_enum_list[] = { | |
76 | { DRM_MODE_CONNECTOR_Unknown, "Unknown" }, | |
77 | { DRM_MODE_CONNECTOR_VGA, "VGA" }, | |
78 | { DRM_MODE_CONNECTOR_DVII, "DVI-I" }, | |
79 | { DRM_MODE_CONNECTOR_DVID, "DVI-D" }, | |
80 | { DRM_MODE_CONNECTOR_DVIA, "DVI-A" }, | |
81 | { DRM_MODE_CONNECTOR_Composite, "Composite" }, | |
82 | { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" }, | |
83 | { DRM_MODE_CONNECTOR_LVDS, "LVDS" }, | |
84 | { DRM_MODE_CONNECTOR_Component, "Component" }, | |
85 | { DRM_MODE_CONNECTOR_9PinDIN, "DIN" }, | |
86 | { DRM_MODE_CONNECTOR_DisplayPort, "DP" }, | |
87 | { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" }, | |
88 | { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" }, | |
89 | { DRM_MODE_CONNECTOR_TV, "TV" }, | |
90 | { DRM_MODE_CONNECTOR_eDP, "eDP" }, | |
91 | { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" }, | |
92 | { DRM_MODE_CONNECTOR_DSI, "DSI" }, | |
93 | { DRM_MODE_CONNECTOR_DPI, "DPI" }, | |
935774cd | 94 | { DRM_MODE_CONNECTOR_WRITEBACK, "Writeback" }, |
52217195 DV |
95 | }; |
96 | ||
97 | void drm_connector_ida_init(void) | |
98 | { | |
99 | int i; | |
100 | ||
101 | for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++) | |
102 | ida_init(&drm_connector_enum_list[i].ida); | |
103 | } | |
104 | ||
105 | void drm_connector_ida_destroy(void) | |
106 | { | |
107 | int i; | |
108 | ||
109 | for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++) | |
110 | ida_destroy(&drm_connector_enum_list[i].ida); | |
111 | } | |
112 | ||
113 | /** | |
114 | * drm_connector_get_cmdline_mode - reads the user's cmdline mode | |
115 | * @connector: connector to quwery | |
116 | * | |
ae2a6da8 | 117 | * The kernel supports per-connector configuration of its consoles through |
52217195 DV |
118 | * use of the video= parameter. This function parses that option and |
119 | * extracts the user's specified mode (or enable/disable status) for a | |
120 | * particular connector. This is typically only used during the early fbdev | |
121 | * setup. | |
122 | */ | |
123 | static void drm_connector_get_cmdline_mode(struct drm_connector *connector) | |
124 | { | |
125 | struct drm_cmdline_mode *mode = &connector->cmdline_mode; | |
126 | char *option = NULL; | |
127 | ||
128 | if (fb_get_options(connector->name, &option)) | |
129 | return; | |
130 | ||
131 | if (!drm_mode_parse_command_line_for_connector(option, | |
132 | connector, | |
133 | mode)) | |
134 | return; | |
135 | ||
136 | if (mode->force) { | |
6140cf20 JN |
137 | DRM_INFO("forcing %s connector %s\n", connector->name, |
138 | drm_get_connector_force_name(mode->force)); | |
52217195 DV |
139 | connector->force = mode->force; |
140 | } | |
141 | ||
142 | DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n", | |
143 | connector->name, | |
144 | mode->xres, mode->yres, | |
145 | mode->refresh_specified ? mode->refresh : 60, | |
146 | mode->rb ? " reduced blanking" : "", | |
147 | mode->margins ? " with margins" : "", | |
148 | mode->interlace ? " interlaced" : ""); | |
149 | } | |
150 | ||
151 | static void drm_connector_free(struct kref *kref) | |
152 | { | |
153 | struct drm_connector *connector = | |
154 | container_of(kref, struct drm_connector, base.refcount); | |
155 | struct drm_device *dev = connector->dev; | |
156 | ||
157 | drm_mode_object_unregister(dev, &connector->base); | |
158 | connector->funcs->destroy(connector); | |
159 | } | |
160 | ||
ea497bb9 | 161 | void drm_connector_free_work_fn(struct work_struct *work) |
a703c550 | 162 | { |
ea497bb9 DV |
163 | struct drm_connector *connector, *n; |
164 | struct drm_device *dev = | |
165 | container_of(work, struct drm_device, mode_config.connector_free_work); | |
166 | struct drm_mode_config *config = &dev->mode_config; | |
167 | unsigned long flags; | |
168 | struct llist_node *freed; | |
a703c550 | 169 | |
ea497bb9 DV |
170 | spin_lock_irqsave(&config->connector_list_lock, flags); |
171 | freed = llist_del_all(&config->connector_free_list); | |
172 | spin_unlock_irqrestore(&config->connector_list_lock, flags); | |
173 | ||
174 | llist_for_each_entry_safe(connector, n, freed, free_node) { | |
175 | drm_mode_object_unregister(dev, &connector->base); | |
176 | connector->funcs->destroy(connector); | |
177 | } | |
a703c550 DV |
178 | } |
179 | ||
52217195 DV |
180 | /** |
181 | * drm_connector_init - Init a preallocated connector | |
182 | * @dev: DRM device | |
183 | * @connector: the connector to init | |
184 | * @funcs: callbacks for this connector | |
185 | * @connector_type: user visible type of the connector | |
186 | * | |
187 | * Initialises a preallocated connector. Connectors should be | |
188 | * subclassed as part of driver connector objects. | |
189 | * | |
190 | * Returns: | |
191 | * Zero on success, error code on failure. | |
192 | */ | |
193 | int drm_connector_init(struct drm_device *dev, | |
194 | struct drm_connector *connector, | |
195 | const struct drm_connector_funcs *funcs, | |
196 | int connector_type) | |
197 | { | |
198 | struct drm_mode_config *config = &dev->mode_config; | |
199 | int ret; | |
200 | struct ida *connector_ida = | |
201 | &drm_connector_enum_list[connector_type].ida; | |
202 | ||
ba1f665f HM |
203 | WARN_ON(drm_drv_uses_atomic_modeset(dev) && |
204 | (!funcs->atomic_destroy_state || | |
205 | !funcs->atomic_duplicate_state)); | |
206 | ||
2135ea7a TR |
207 | ret = __drm_mode_object_add(dev, &connector->base, |
208 | DRM_MODE_OBJECT_CONNECTOR, | |
209 | false, drm_connector_free); | |
52217195 | 210 | if (ret) |
613051da | 211 | return ret; |
52217195 DV |
212 | |
213 | connector->base.properties = &connector->properties; | |
214 | connector->dev = dev; | |
215 | connector->funcs = funcs; | |
216 | ||
2a8d3eac VS |
217 | /* connector index is used with 32bit bitmasks */ |
218 | ret = ida_simple_get(&config->connector_ida, 0, 32, GFP_KERNEL); | |
219 | if (ret < 0) { | |
220 | DRM_DEBUG_KMS("Failed to allocate %s connector index: %d\n", | |
221 | drm_connector_enum_list[connector_type].name, | |
222 | ret); | |
52217195 | 223 | goto out_put; |
2a8d3eac | 224 | } |
52217195 DV |
225 | connector->index = ret; |
226 | ret = 0; | |
227 | ||
228 | connector->connector_type = connector_type; | |
229 | connector->connector_type_id = | |
230 | ida_simple_get(connector_ida, 1, 0, GFP_KERNEL); | |
231 | if (connector->connector_type_id < 0) { | |
232 | ret = connector->connector_type_id; | |
233 | goto out_put_id; | |
234 | } | |
235 | connector->name = | |
236 | kasprintf(GFP_KERNEL, "%s-%d", | |
237 | drm_connector_enum_list[connector_type].name, | |
238 | connector->connector_type_id); | |
239 | if (!connector->name) { | |
240 | ret = -ENOMEM; | |
241 | goto out_put_type_id; | |
242 | } | |
243 | ||
244 | INIT_LIST_HEAD(&connector->probed_modes); | |
245 | INIT_LIST_HEAD(&connector->modes); | |
e73ab00e | 246 | mutex_init(&connector->mutex); |
52217195 DV |
247 | connector->edid_blob_ptr = NULL; |
248 | connector->status = connector_status_unknown; | |
8d70f395 HG |
249 | connector->display_info.panel_orientation = |
250 | DRM_MODE_PANEL_ORIENTATION_UNKNOWN; | |
52217195 DV |
251 | |
252 | drm_connector_get_cmdline_mode(connector); | |
253 | ||
254 | /* We should add connectors at the end to avoid upsetting the connector | |
255 | * index too much. */ | |
613051da | 256 | spin_lock_irq(&config->connector_list_lock); |
52217195 DV |
257 | list_add_tail(&connector->head, &config->connector_list); |
258 | config->num_connector++; | |
613051da | 259 | spin_unlock_irq(&config->connector_list_lock); |
52217195 | 260 | |
935774cd BS |
261 | if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL && |
262 | connector_type != DRM_MODE_CONNECTOR_WRITEBACK) | |
6b7e2d5c | 263 | drm_connector_attach_edid_property(connector); |
52217195 DV |
264 | |
265 | drm_object_attach_property(&connector->base, | |
266 | config->dpms_property, 0); | |
267 | ||
40ee6fbe MN |
268 | drm_object_attach_property(&connector->base, |
269 | config->link_status_property, | |
270 | 0); | |
271 | ||
66660d4c DA |
272 | drm_object_attach_property(&connector->base, |
273 | config->non_desktop_property, | |
274 | 0); | |
275 | ||
52217195 DV |
276 | if (drm_core_check_feature(dev, DRIVER_ATOMIC)) { |
277 | drm_object_attach_property(&connector->base, config->prop_crtc_id, 0); | |
278 | } | |
279 | ||
280 | connector->debugfs_entry = NULL; | |
281 | out_put_type_id: | |
282 | if (ret) | |
587680c1 | 283 | ida_simple_remove(connector_ida, connector->connector_type_id); |
52217195 DV |
284 | out_put_id: |
285 | if (ret) | |
587680c1 | 286 | ida_simple_remove(&config->connector_ida, connector->index); |
52217195 DV |
287 | out_put: |
288 | if (ret) | |
289 | drm_mode_object_unregister(dev, &connector->base); | |
290 | ||
52217195 DV |
291 | return ret; |
292 | } | |
293 | EXPORT_SYMBOL(drm_connector_init); | |
294 | ||
6b7e2d5c GH |
295 | /** |
296 | * drm_connector_attach_edid_property - attach edid property. | |
6b7e2d5c GH |
297 | * @connector: the connector |
298 | * | |
299 | * Some connector types like DRM_MODE_CONNECTOR_VIRTUAL do not get a | |
300 | * edid property attached by default. This function can be used to | |
301 | * explicitly enable the edid property in these cases. | |
302 | */ | |
303 | void drm_connector_attach_edid_property(struct drm_connector *connector) | |
304 | { | |
305 | struct drm_mode_config *config = &connector->dev->mode_config; | |
306 | ||
307 | drm_object_attach_property(&connector->base, | |
308 | config->edid_property, | |
309 | 0); | |
310 | } | |
311 | EXPORT_SYMBOL(drm_connector_attach_edid_property); | |
312 | ||
52217195 | 313 | /** |
cde4c44d | 314 | * drm_connector_attach_encoder - attach a connector to an encoder |
52217195 DV |
315 | * @connector: connector to attach |
316 | * @encoder: encoder to attach @connector to | |
317 | * | |
318 | * This function links up a connector to an encoder. Note that the routing | |
319 | * restrictions between encoders and crtcs are exposed to userspace through the | |
320 | * possible_clones and possible_crtcs bitmasks. | |
321 | * | |
322 | * Returns: | |
323 | * Zero on success, negative errno on failure. | |
324 | */ | |
cde4c44d DV |
325 | int drm_connector_attach_encoder(struct drm_connector *connector, |
326 | struct drm_encoder *encoder) | |
52217195 DV |
327 | { |
328 | int i; | |
329 | ||
330 | /* | |
331 | * In the past, drivers have attempted to model the static association | |
332 | * of connector to encoder in simple connector/encoder devices using a | |
333 | * direct assignment of connector->encoder = encoder. This connection | |
334 | * is a logical one and the responsibility of the core, so drivers are | |
335 | * expected not to mess with this. | |
336 | * | |
337 | * Note that the error return should've been enough here, but a large | |
338 | * majority of drivers ignores the return value, so add in a big WARN | |
339 | * to get people's attention. | |
340 | */ | |
341 | if (WARN_ON(connector->encoder)) | |
342 | return -EINVAL; | |
343 | ||
83aefbb8 | 344 | for (i = 0; i < ARRAY_SIZE(connector->encoder_ids); i++) { |
52217195 DV |
345 | if (connector->encoder_ids[i] == 0) { |
346 | connector->encoder_ids[i] = encoder->base.id; | |
347 | return 0; | |
348 | } | |
349 | } | |
350 | return -ENOMEM; | |
351 | } | |
cde4c44d | 352 | EXPORT_SYMBOL(drm_connector_attach_encoder); |
52217195 | 353 | |
38cb8d96 VS |
354 | /** |
355 | * drm_connector_has_possible_encoder - check if the connector and encoder are assosicated with each other | |
356 | * @connector: the connector | |
357 | * @encoder: the encoder | |
358 | * | |
359 | * Returns: | |
360 | * True if @encoder is one of the possible encoders for @connector. | |
361 | */ | |
362 | bool drm_connector_has_possible_encoder(struct drm_connector *connector, | |
363 | struct drm_encoder *encoder) | |
364 | { | |
365 | struct drm_encoder *enc; | |
366 | int i; | |
367 | ||
368 | drm_connector_for_each_possible_encoder(connector, enc, i) { | |
369 | if (enc == encoder) | |
370 | return true; | |
371 | } | |
372 | ||
373 | return false; | |
374 | } | |
375 | EXPORT_SYMBOL(drm_connector_has_possible_encoder); | |
376 | ||
52217195 DV |
377 | static void drm_mode_remove(struct drm_connector *connector, |
378 | struct drm_display_mode *mode) | |
379 | { | |
380 | list_del(&mode->head); | |
381 | drm_mode_destroy(connector->dev, mode); | |
382 | } | |
383 | ||
384 | /** | |
385 | * drm_connector_cleanup - cleans up an initialised connector | |
386 | * @connector: connector to cleanup | |
387 | * | |
388 | * Cleans up the connector but doesn't free the object. | |
389 | */ | |
390 | void drm_connector_cleanup(struct drm_connector *connector) | |
391 | { | |
392 | struct drm_device *dev = connector->dev; | |
393 | struct drm_display_mode *mode, *t; | |
394 | ||
395 | /* The connector should have been removed from userspace long before | |
396 | * it is finally destroyed. | |
397 | */ | |
39b50c60 LP |
398 | if (WARN_ON(connector->registration_state == |
399 | DRM_CONNECTOR_REGISTERED)) | |
52217195 DV |
400 | drm_connector_unregister(connector); |
401 | ||
402 | if (connector->tile_group) { | |
403 | drm_mode_put_tile_group(dev, connector->tile_group); | |
404 | connector->tile_group = NULL; | |
405 | } | |
406 | ||
407 | list_for_each_entry_safe(mode, t, &connector->probed_modes, head) | |
408 | drm_mode_remove(connector, mode); | |
409 | ||
410 | list_for_each_entry_safe(mode, t, &connector->modes, head) | |
411 | drm_mode_remove(connector, mode); | |
412 | ||
9a47dba1 CJ |
413 | ida_simple_remove(&drm_connector_enum_list[connector->connector_type].ida, |
414 | connector->connector_type_id); | |
52217195 | 415 | |
9a47dba1 CJ |
416 | ida_simple_remove(&dev->mode_config.connector_ida, |
417 | connector->index); | |
52217195 DV |
418 | |
419 | kfree(connector->display_info.bus_formats); | |
420 | drm_mode_object_unregister(dev, &connector->base); | |
421 | kfree(connector->name); | |
422 | connector->name = NULL; | |
613051da | 423 | spin_lock_irq(&dev->mode_config.connector_list_lock); |
52217195 DV |
424 | list_del(&connector->head); |
425 | dev->mode_config.num_connector--; | |
613051da | 426 | spin_unlock_irq(&dev->mode_config.connector_list_lock); |
52217195 DV |
427 | |
428 | WARN_ON(connector->state && !connector->funcs->atomic_destroy_state); | |
429 | if (connector->state && connector->funcs->atomic_destroy_state) | |
430 | connector->funcs->atomic_destroy_state(connector, | |
431 | connector->state); | |
432 | ||
e73ab00e DV |
433 | mutex_destroy(&connector->mutex); |
434 | ||
52217195 DV |
435 | memset(connector, 0, sizeof(*connector)); |
436 | } | |
437 | EXPORT_SYMBOL(drm_connector_cleanup); | |
438 | ||
439 | /** | |
440 | * drm_connector_register - register a connector | |
441 | * @connector: the connector to register | |
442 | * | |
443 | * Register userspace interfaces for a connector | |
444 | * | |
445 | * Returns: | |
446 | * Zero on success, error code on failure. | |
447 | */ | |
448 | int drm_connector_register(struct drm_connector *connector) | |
449 | { | |
e73ab00e | 450 | int ret = 0; |
52217195 | 451 | |
e6e7b48b DV |
452 | if (!connector->dev->registered) |
453 | return 0; | |
454 | ||
e73ab00e | 455 | mutex_lock(&connector->mutex); |
39b50c60 | 456 | if (connector->registration_state != DRM_CONNECTOR_INITIALIZING) |
e73ab00e | 457 | goto unlock; |
52217195 DV |
458 | |
459 | ret = drm_sysfs_connector_add(connector); | |
460 | if (ret) | |
e73ab00e | 461 | goto unlock; |
52217195 DV |
462 | |
463 | ret = drm_debugfs_connector_add(connector); | |
464 | if (ret) { | |
465 | goto err_sysfs; | |
466 | } | |
467 | ||
468 | if (connector->funcs->late_register) { | |
469 | ret = connector->funcs->late_register(connector); | |
470 | if (ret) | |
471 | goto err_debugfs; | |
472 | } | |
473 | ||
474 | drm_mode_object_register(connector->dev, &connector->base); | |
475 | ||
39b50c60 | 476 | connector->registration_state = DRM_CONNECTOR_REGISTERED; |
e73ab00e | 477 | goto unlock; |
52217195 DV |
478 | |
479 | err_debugfs: | |
480 | drm_debugfs_connector_remove(connector); | |
481 | err_sysfs: | |
482 | drm_sysfs_connector_remove(connector); | |
e73ab00e DV |
483 | unlock: |
484 | mutex_unlock(&connector->mutex); | |
52217195 DV |
485 | return ret; |
486 | } | |
487 | EXPORT_SYMBOL(drm_connector_register); | |
488 | ||
489 | /** | |
490 | * drm_connector_unregister - unregister a connector | |
491 | * @connector: the connector to unregister | |
492 | * | |
493 | * Unregister userspace interfaces for a connector | |
494 | */ | |
495 | void drm_connector_unregister(struct drm_connector *connector) | |
496 | { | |
e73ab00e | 497 | mutex_lock(&connector->mutex); |
39b50c60 | 498 | if (connector->registration_state != DRM_CONNECTOR_REGISTERED) { |
e73ab00e | 499 | mutex_unlock(&connector->mutex); |
52217195 | 500 | return; |
e73ab00e | 501 | } |
52217195 DV |
502 | |
503 | if (connector->funcs->early_unregister) | |
504 | connector->funcs->early_unregister(connector); | |
505 | ||
506 | drm_sysfs_connector_remove(connector); | |
507 | drm_debugfs_connector_remove(connector); | |
508 | ||
39b50c60 | 509 | connector->registration_state = DRM_CONNECTOR_UNREGISTERED; |
e73ab00e | 510 | mutex_unlock(&connector->mutex); |
52217195 DV |
511 | } |
512 | EXPORT_SYMBOL(drm_connector_unregister); | |
513 | ||
514 | void drm_connector_unregister_all(struct drm_device *dev) | |
515 | { | |
516 | struct drm_connector *connector; | |
613051da | 517 | struct drm_connector_list_iter conn_iter; |
52217195 | 518 | |
b982dab1 | 519 | drm_connector_list_iter_begin(dev, &conn_iter); |
613051da | 520 | drm_for_each_connector_iter(connector, &conn_iter) |
52217195 | 521 | drm_connector_unregister(connector); |
b982dab1 | 522 | drm_connector_list_iter_end(&conn_iter); |
52217195 DV |
523 | } |
524 | ||
525 | int drm_connector_register_all(struct drm_device *dev) | |
526 | { | |
527 | struct drm_connector *connector; | |
613051da DV |
528 | struct drm_connector_list_iter conn_iter; |
529 | int ret = 0; | |
52217195 | 530 | |
b982dab1 | 531 | drm_connector_list_iter_begin(dev, &conn_iter); |
613051da | 532 | drm_for_each_connector_iter(connector, &conn_iter) { |
52217195 DV |
533 | ret = drm_connector_register(connector); |
534 | if (ret) | |
613051da | 535 | break; |
52217195 | 536 | } |
b982dab1 | 537 | drm_connector_list_iter_end(&conn_iter); |
52217195 | 538 | |
613051da DV |
539 | if (ret) |
540 | drm_connector_unregister_all(dev); | |
52217195 DV |
541 | return ret; |
542 | } | |
543 | ||
544 | /** | |
545 | * drm_get_connector_status_name - return a string for connector status | |
546 | * @status: connector status to compute name of | |
547 | * | |
548 | * In contrast to the other drm_get_*_name functions this one here returns a | |
549 | * const pointer and hence is threadsafe. | |
550 | */ | |
551 | const char *drm_get_connector_status_name(enum drm_connector_status status) | |
552 | { | |
553 | if (status == connector_status_connected) | |
554 | return "connected"; | |
555 | else if (status == connector_status_disconnected) | |
556 | return "disconnected"; | |
557 | else | |
558 | return "unknown"; | |
559 | } | |
560 | EXPORT_SYMBOL(drm_get_connector_status_name); | |
561 | ||
6140cf20 JN |
562 | /** |
563 | * drm_get_connector_force_name - return a string for connector force | |
564 | * @force: connector force to get name of | |
565 | * | |
566 | * Returns: const pointer to name. | |
567 | */ | |
568 | const char *drm_get_connector_force_name(enum drm_connector_force force) | |
569 | { | |
570 | switch (force) { | |
571 | case DRM_FORCE_UNSPECIFIED: | |
572 | return "unspecified"; | |
573 | case DRM_FORCE_OFF: | |
574 | return "off"; | |
575 | case DRM_FORCE_ON: | |
576 | return "on"; | |
577 | case DRM_FORCE_ON_DIGITAL: | |
578 | return "digital"; | |
579 | default: | |
580 | return "unknown"; | |
581 | } | |
582 | } | |
583 | ||
613051da DV |
584 | #ifdef CONFIG_LOCKDEP |
585 | static struct lockdep_map connector_list_iter_dep_map = { | |
586 | .name = "drm_connector_list_iter" | |
587 | }; | |
588 | #endif | |
589 | ||
590 | /** | |
b982dab1 | 591 | * drm_connector_list_iter_begin - initialize a connector_list iterator |
613051da DV |
592 | * @dev: DRM device |
593 | * @iter: connector_list iterator | |
594 | * | |
d574528a | 595 | * Sets @iter up to walk the &drm_mode_config.connector_list of @dev. @iter |
b982dab1 | 596 | * must always be cleaned up again by calling drm_connector_list_iter_end(). |
613051da DV |
597 | * Iteration itself happens using drm_connector_list_iter_next() or |
598 | * drm_for_each_connector_iter(). | |
599 | */ | |
b982dab1 TR |
600 | void drm_connector_list_iter_begin(struct drm_device *dev, |
601 | struct drm_connector_list_iter *iter) | |
613051da DV |
602 | { |
603 | iter->dev = dev; | |
604 | iter->conn = NULL; | |
605 | lock_acquire_shared_recursive(&connector_list_iter_dep_map, 0, 1, NULL, _RET_IP_); | |
606 | } | |
b982dab1 | 607 | EXPORT_SYMBOL(drm_connector_list_iter_begin); |
613051da | 608 | |
a703c550 DV |
609 | /* |
610 | * Extra-safe connector put function that works in any context. Should only be | |
611 | * used from the connector_iter functions, where we never really expect to | |
612 | * actually release the connector when dropping our final reference. | |
613 | */ | |
614 | static void | |
ea497bb9 | 615 | __drm_connector_put_safe(struct drm_connector *conn) |
a703c550 | 616 | { |
ea497bb9 DV |
617 | struct drm_mode_config *config = &conn->dev->mode_config; |
618 | ||
619 | lockdep_assert_held(&config->connector_list_lock); | |
620 | ||
621 | if (!refcount_dec_and_test(&conn->base.refcount.refcount)) | |
622 | return; | |
623 | ||
624 | llist_add(&conn->free_node, &config->connector_free_list); | |
625 | schedule_work(&config->connector_free_work); | |
a703c550 DV |
626 | } |
627 | ||
613051da DV |
628 | /** |
629 | * drm_connector_list_iter_next - return next connector | |
4f45c778 | 630 | * @iter: connector_list iterator |
613051da DV |
631 | * |
632 | * Returns the next connector for @iter, or NULL when the list walk has | |
633 | * completed. | |
634 | */ | |
635 | struct drm_connector * | |
636 | drm_connector_list_iter_next(struct drm_connector_list_iter *iter) | |
637 | { | |
638 | struct drm_connector *old_conn = iter->conn; | |
639 | struct drm_mode_config *config = &iter->dev->mode_config; | |
640 | struct list_head *lhead; | |
641 | unsigned long flags; | |
642 | ||
643 | spin_lock_irqsave(&config->connector_list_lock, flags); | |
644 | lhead = old_conn ? &old_conn->head : &config->connector_list; | |
645 | ||
646 | do { | |
647 | if (lhead->next == &config->connector_list) { | |
648 | iter->conn = NULL; | |
649 | break; | |
650 | } | |
651 | ||
652 | lhead = lhead->next; | |
653 | iter->conn = list_entry(lhead, struct drm_connector, head); | |
654 | ||
655 | /* loop until it's not a zombie connector */ | |
656 | } while (!kref_get_unless_zero(&iter->conn->base.refcount)); | |
613051da DV |
657 | |
658 | if (old_conn) | |
ea497bb9 DV |
659 | __drm_connector_put_safe(old_conn); |
660 | spin_unlock_irqrestore(&config->connector_list_lock, flags); | |
613051da DV |
661 | |
662 | return iter->conn; | |
663 | } | |
664 | EXPORT_SYMBOL(drm_connector_list_iter_next); | |
665 | ||
666 | /** | |
b982dab1 | 667 | * drm_connector_list_iter_end - tear down a connector_list iterator |
613051da DV |
668 | * @iter: connector_list iterator |
669 | * | |
670 | * Tears down @iter and releases any resources (like &drm_connector references) | |
671 | * acquired while walking the list. This must always be called, both when the | |
672 | * iteration completes fully or when it was aborted without walking the entire | |
673 | * list. | |
674 | */ | |
b982dab1 | 675 | void drm_connector_list_iter_end(struct drm_connector_list_iter *iter) |
613051da | 676 | { |
ea497bb9 DV |
677 | struct drm_mode_config *config = &iter->dev->mode_config; |
678 | unsigned long flags; | |
679 | ||
613051da | 680 | iter->dev = NULL; |
ea497bb9 DV |
681 | if (iter->conn) { |
682 | spin_lock_irqsave(&config->connector_list_lock, flags); | |
683 | __drm_connector_put_safe(iter->conn); | |
684 | spin_unlock_irqrestore(&config->connector_list_lock, flags); | |
685 | } | |
613051da DV |
686 | lock_release(&connector_list_iter_dep_map, 0, _RET_IP_); |
687 | } | |
b982dab1 | 688 | EXPORT_SYMBOL(drm_connector_list_iter_end); |
613051da | 689 | |
52217195 DV |
690 | static const struct drm_prop_enum_list drm_subpixel_enum_list[] = { |
691 | { SubPixelUnknown, "Unknown" }, | |
692 | { SubPixelHorizontalRGB, "Horizontal RGB" }, | |
693 | { SubPixelHorizontalBGR, "Horizontal BGR" }, | |
694 | { SubPixelVerticalRGB, "Vertical RGB" }, | |
695 | { SubPixelVerticalBGR, "Vertical BGR" }, | |
696 | { SubPixelNone, "None" }, | |
697 | }; | |
698 | ||
699 | /** | |
700 | * drm_get_subpixel_order_name - return a string for a given subpixel enum | |
701 | * @order: enum of subpixel_order | |
702 | * | |
703 | * Note you could abuse this and return something out of bounds, but that | |
704 | * would be a caller error. No unscrubbed user data should make it here. | |
705 | */ | |
706 | const char *drm_get_subpixel_order_name(enum subpixel_order order) | |
707 | { | |
708 | return drm_subpixel_enum_list[order].name; | |
709 | } | |
710 | EXPORT_SYMBOL(drm_get_subpixel_order_name); | |
711 | ||
712 | static const struct drm_prop_enum_list drm_dpms_enum_list[] = { | |
713 | { DRM_MODE_DPMS_ON, "On" }, | |
714 | { DRM_MODE_DPMS_STANDBY, "Standby" }, | |
715 | { DRM_MODE_DPMS_SUSPEND, "Suspend" }, | |
716 | { DRM_MODE_DPMS_OFF, "Off" } | |
717 | }; | |
718 | DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list) | |
719 | ||
40ee6fbe MN |
720 | static const struct drm_prop_enum_list drm_link_status_enum_list[] = { |
721 | { DRM_MODE_LINK_STATUS_GOOD, "Good" }, | |
722 | { DRM_MODE_LINK_STATUS_BAD, "Bad" }, | |
723 | }; | |
40ee6fbe | 724 | |
b3c6c8bf DV |
725 | /** |
726 | * drm_display_info_set_bus_formats - set the supported bus formats | |
727 | * @info: display info to store bus formats in | |
728 | * @formats: array containing the supported bus formats | |
729 | * @num_formats: the number of entries in the fmts array | |
730 | * | |
731 | * Store the supported bus formats in display info structure. | |
732 | * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for | |
733 | * a full list of available formats. | |
734 | */ | |
735 | int drm_display_info_set_bus_formats(struct drm_display_info *info, | |
736 | const u32 *formats, | |
737 | unsigned int num_formats) | |
738 | { | |
739 | u32 *fmts = NULL; | |
740 | ||
741 | if (!formats && num_formats) | |
742 | return -EINVAL; | |
743 | ||
744 | if (formats && num_formats) { | |
745 | fmts = kmemdup(formats, sizeof(*formats) * num_formats, | |
746 | GFP_KERNEL); | |
747 | if (!fmts) | |
748 | return -ENOMEM; | |
749 | } | |
750 | ||
751 | kfree(info->bus_formats); | |
752 | info->bus_formats = fmts; | |
753 | info->num_bus_formats = num_formats; | |
754 | ||
755 | return 0; | |
756 | } | |
757 | EXPORT_SYMBOL(drm_display_info_set_bus_formats); | |
758 | ||
52217195 DV |
759 | /* Optional connector properties. */ |
760 | static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] = { | |
761 | { DRM_MODE_SCALE_NONE, "None" }, | |
762 | { DRM_MODE_SCALE_FULLSCREEN, "Full" }, | |
763 | { DRM_MODE_SCALE_CENTER, "Center" }, | |
764 | { DRM_MODE_SCALE_ASPECT, "Full aspect" }, | |
765 | }; | |
766 | ||
767 | static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = { | |
768 | { DRM_MODE_PICTURE_ASPECT_NONE, "Automatic" }, | |
769 | { DRM_MODE_PICTURE_ASPECT_4_3, "4:3" }, | |
770 | { DRM_MODE_PICTURE_ASPECT_16_9, "16:9" }, | |
771 | }; | |
772 | ||
50525c33 SL |
773 | static const struct drm_prop_enum_list drm_content_type_enum_list[] = { |
774 | { DRM_MODE_CONTENT_TYPE_NO_DATA, "No Data" }, | |
775 | { DRM_MODE_CONTENT_TYPE_GRAPHICS, "Graphics" }, | |
776 | { DRM_MODE_CONTENT_TYPE_PHOTO, "Photo" }, | |
777 | { DRM_MODE_CONTENT_TYPE_CINEMA, "Cinema" }, | |
778 | { DRM_MODE_CONTENT_TYPE_GAME, "Game" }, | |
779 | }; | |
780 | ||
8d70f395 HG |
781 | static const struct drm_prop_enum_list drm_panel_orientation_enum_list[] = { |
782 | { DRM_MODE_PANEL_ORIENTATION_NORMAL, "Normal" }, | |
783 | { DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP, "Upside Down" }, | |
784 | { DRM_MODE_PANEL_ORIENTATION_LEFT_UP, "Left Side Up" }, | |
785 | { DRM_MODE_PANEL_ORIENTATION_RIGHT_UP, "Right Side Up" }, | |
786 | }; | |
787 | ||
52217195 DV |
788 | static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = { |
789 | { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ | |
790 | { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ | |
791 | { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ | |
792 | }; | |
793 | DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list) | |
794 | ||
795 | static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = { | |
796 | { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */ | |
797 | { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ | |
798 | { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ | |
799 | }; | |
800 | DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name, | |
801 | drm_dvi_i_subconnector_enum_list) | |
802 | ||
803 | static const struct drm_prop_enum_list drm_tv_select_enum_list[] = { | |
804 | { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ | |
805 | { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ | |
806 | { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ | |
807 | { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ | |
808 | { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ | |
809 | }; | |
810 | DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list) | |
811 | ||
812 | static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = { | |
813 | { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */ | |
814 | { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ | |
815 | { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ | |
816 | { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ | |
817 | { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ | |
818 | }; | |
819 | DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name, | |
820 | drm_tv_subconnector_enum_list) | |
821 | ||
24557865 SP |
822 | static struct drm_prop_enum_list drm_cp_enum_list[] = { |
823 | { DRM_MODE_CONTENT_PROTECTION_UNDESIRED, "Undesired" }, | |
824 | { DRM_MODE_CONTENT_PROTECTION_DESIRED, "Desired" }, | |
825 | { DRM_MODE_CONTENT_PROTECTION_ENABLED, "Enabled" }, | |
826 | }; | |
827 | DRM_ENUM_NAME_FN(drm_get_content_protection_name, drm_cp_enum_list) | |
828 | ||
4ada6f22 DV |
829 | /** |
830 | * DOC: standard connector properties | |
831 | * | |
832 | * DRM connectors have a few standardized properties: | |
833 | * | |
834 | * EDID: | |
835 | * Blob property which contains the current EDID read from the sink. This | |
836 | * is useful to parse sink identification information like vendor, model | |
837 | * and serial. Drivers should update this property by calling | |
c555f023 | 838 | * drm_connector_update_edid_property(), usually after having parsed |
4ada6f22 DV |
839 | * the EDID using drm_add_edid_modes(). Userspace cannot change this |
840 | * property. | |
841 | * DPMS: | |
842 | * Legacy property for setting the power state of the connector. For atomic | |
843 | * drivers this is only provided for backwards compatibility with existing | |
844 | * drivers, it remaps to controlling the "ACTIVE" property on the CRTC the | |
845 | * connector is linked to. Drivers should never set this property directly, | |
d574528a | 846 | * it is handled by the DRM core by calling the &drm_connector_funcs.dpms |
144a7999 DV |
847 | * callback. For atomic drivers the remapping to the "ACTIVE" property is |
848 | * implemented in the DRM core. This is the only standard connector | |
849 | * property that userspace can change. | |
d0d1aee5 DV |
850 | * |
851 | * Note that this property cannot be set through the MODE_ATOMIC ioctl, | |
852 | * userspace must use "ACTIVE" on the CRTC instead. | |
853 | * | |
854 | * WARNING: | |
855 | * | |
856 | * For userspace also running on legacy drivers the "DPMS" semantics are a | |
857 | * lot more complicated. First, userspace cannot rely on the "DPMS" value | |
858 | * returned by the GETCONNECTOR actually reflecting reality, because many | |
859 | * drivers fail to update it. For atomic drivers this is taken care of in | |
860 | * drm_atomic_helper_update_legacy_modeset_state(). | |
861 | * | |
862 | * The second issue is that the DPMS state is only well-defined when the | |
863 | * connector is connected to a CRTC. In atomic the DRM core enforces that | |
864 | * "ACTIVE" is off in such a case, no such checks exists for "DPMS". | |
865 | * | |
866 | * Finally, when enabling an output using the legacy SETCONFIG ioctl then | |
867 | * "DPMS" is forced to ON. But see above, that might not be reflected in | |
868 | * the software value on legacy drivers. | |
869 | * | |
870 | * Summarizing: Only set "DPMS" when the connector is known to be enabled, | |
871 | * assume that a successful SETCONFIG call also sets "DPMS" to on, and | |
872 | * never read back the value of "DPMS" because it can be incorrect. | |
4ada6f22 DV |
873 | * PATH: |
874 | * Connector path property to identify how this sink is physically | |
875 | * connected. Used by DP MST. This should be set by calling | |
97e14fbe | 876 | * drm_connector_set_path_property(), in the case of DP MST with the |
4ada6f22 DV |
877 | * path property the MST manager created. Userspace cannot change this |
878 | * property. | |
879 | * TILE: | |
880 | * Connector tile group property to indicate how a set of DRM connector | |
881 | * compose together into one logical screen. This is used by both high-res | |
882 | * external screens (often only using a single cable, but exposing multiple | |
883 | * DP MST sinks), or high-res integrated panels (like dual-link DSI) which | |
884 | * are not gen-locked. Note that for tiled panels which are genlocked, like | |
885 | * dual-link LVDS or dual-link DSI, the driver should try to not expose the | |
886 | * tiling and virtualize both &drm_crtc and &drm_plane if needed. Drivers | |
97e14fbe | 887 | * should update this value using drm_connector_set_tile_property(). |
4ada6f22 | 888 | * Userspace cannot change this property. |
40ee6fbe | 889 | * link-status: |
716719a3 SP |
890 | * Connector link-status property to indicate the status of link. The |
891 | * default value of link-status is "GOOD". If something fails during or | |
892 | * after modeset, the kernel driver may set this to "BAD" and issue a | |
893 | * hotplug uevent. Drivers should update this value using | |
97e14fbe | 894 | * drm_connector_set_link_status_property(). |
66660d4c DA |
895 | * non_desktop: |
896 | * Indicates the output should be ignored for purposes of displaying a | |
897 | * standard desktop environment or console. This is most likely because | |
898 | * the output device is not rectilinear. | |
24557865 SP |
899 | * Content Protection: |
900 | * This property is used by userspace to request the kernel protect future | |
901 | * content communicated over the link. When requested, kernel will apply | |
902 | * the appropriate means of protection (most often HDCP), and use the | |
903 | * property to tell userspace the protection is active. | |
904 | * | |
905 | * Drivers can set this up by calling | |
906 | * drm_connector_attach_content_protection_property() on initialization. | |
907 | * | |
908 | * The value of this property can be one of the following: | |
909 | * | |
bbeba09f | 910 | * DRM_MODE_CONTENT_PROTECTION_UNDESIRED = 0 |
24557865 | 911 | * The link is not protected, content is transmitted in the clear. |
bbeba09f | 912 | * DRM_MODE_CONTENT_PROTECTION_DESIRED = 1 |
24557865 SP |
913 | * Userspace has requested content protection, but the link is not |
914 | * currently protected. When in this state, kernel should enable | |
915 | * Content Protection as soon as possible. | |
bbeba09f | 916 | * DRM_MODE_CONTENT_PROTECTION_ENABLED = 2 |
24557865 SP |
917 | * Userspace has requested content protection, and the link is |
918 | * protected. Only the driver can set the property to this value. | |
919 | * If userspace attempts to set to ENABLED, kernel will return | |
920 | * -EINVAL. | |
921 | * | |
922 | * A few guidelines: | |
923 | * | |
924 | * - DESIRED state should be preserved until userspace de-asserts it by | |
925 | * setting the property to UNDESIRED. This means ENABLED should only | |
926 | * transition to UNDESIRED when the user explicitly requests it. | |
927 | * - If the state is DESIRED, kernel should attempt to re-authenticate the | |
928 | * link whenever possible. This includes across disable/enable, dpms, | |
929 | * hotplug, downstream device changes, link status failures, etc.. | |
930 | * - Userspace is responsible for polling the property to determine when | |
931 | * the value transitions from ENABLED to DESIRED. This signifies the link | |
932 | * is no longer protected and userspace should take appropriate action | |
933 | * (whatever that might be). | |
4ada6f22 | 934 | * |
47e22ff1 RS |
935 | * max bpc: |
936 | * This range property is used by userspace to limit the bit depth. When | |
937 | * used the driver would limit the bpc in accordance with the valid range | |
938 | * supported by the hardware and sink. Drivers to use the function | |
939 | * drm_connector_attach_max_bpc_property() to create and attach the | |
940 | * property to the connector during initialization. | |
941 | * | |
4ada6f22 DV |
942 | * Connectors also have one standardized atomic property: |
943 | * | |
944 | * CRTC_ID: | |
945 | * Mode object ID of the &drm_crtc this connector should be connected to. | |
8d70f395 HG |
946 | * |
947 | * Connectors for LCD panels may also have one standardized property: | |
948 | * | |
949 | * panel orientation: | |
950 | * On some devices the LCD panel is mounted in the casing in such a way | |
951 | * that the up/top side of the panel does not match with the top side of | |
952 | * the device. Userspace can use this property to check for this. | |
953 | * Note that input coordinates from touchscreens (input devices with | |
954 | * INPUT_PROP_DIRECT) will still map 1:1 to the actual LCD panel | |
955 | * coordinates, so if userspace rotates the picture to adjust for | |
956 | * the orientation it must also apply the same transformation to the | |
bbeba09f DV |
957 | * touchscreen input coordinates. This property is initialized by calling |
958 | * drm_connector_init_panel_orientation_property(). | |
959 | * | |
960 | * scaling mode: | |
961 | * This property defines how a non-native mode is upscaled to the native | |
962 | * mode of an LCD panel: | |
963 | * | |
964 | * None: | |
965 | * No upscaling happens, scaling is left to the panel. Not all | |
966 | * drivers expose this mode. | |
967 | * Full: | |
968 | * The output is upscaled to the full resolution of the panel, | |
969 | * ignoring the aspect ratio. | |
970 | * Center: | |
971 | * No upscaling happens, the output is centered within the native | |
972 | * resolution the panel. | |
973 | * Full aspect: | |
974 | * The output is upscaled to maximize either the width or height | |
975 | * while retaining the aspect ratio. | |
976 | * | |
977 | * This property should be set up by calling | |
978 | * drm_connector_attach_scaling_mode_property(). Note that drivers | |
979 | * can also expose this property to external outputs, in which case they | |
980 | * must support "None", which should be the default (since external screens | |
981 | * have a built-in scaler). | |
4ada6f22 DV |
982 | */ |
983 | ||
52217195 DV |
984 | int drm_connector_create_standard_properties(struct drm_device *dev) |
985 | { | |
986 | struct drm_property *prop; | |
987 | ||
988 | prop = drm_property_create(dev, DRM_MODE_PROP_BLOB | | |
989 | DRM_MODE_PROP_IMMUTABLE, | |
990 | "EDID", 0); | |
991 | if (!prop) | |
992 | return -ENOMEM; | |
993 | dev->mode_config.edid_property = prop; | |
994 | ||
995 | prop = drm_property_create_enum(dev, 0, | |
996 | "DPMS", drm_dpms_enum_list, | |
997 | ARRAY_SIZE(drm_dpms_enum_list)); | |
998 | if (!prop) | |
999 | return -ENOMEM; | |
1000 | dev->mode_config.dpms_property = prop; | |
1001 | ||
1002 | prop = drm_property_create(dev, | |
1003 | DRM_MODE_PROP_BLOB | | |
1004 | DRM_MODE_PROP_IMMUTABLE, | |
1005 | "PATH", 0); | |
1006 | if (!prop) | |
1007 | return -ENOMEM; | |
1008 | dev->mode_config.path_property = prop; | |
1009 | ||
1010 | prop = drm_property_create(dev, | |
1011 | DRM_MODE_PROP_BLOB | | |
1012 | DRM_MODE_PROP_IMMUTABLE, | |
1013 | "TILE", 0); | |
1014 | if (!prop) | |
1015 | return -ENOMEM; | |
1016 | dev->mode_config.tile_property = prop; | |
1017 | ||
40ee6fbe MN |
1018 | prop = drm_property_create_enum(dev, 0, "link-status", |
1019 | drm_link_status_enum_list, | |
1020 | ARRAY_SIZE(drm_link_status_enum_list)); | |
1021 | if (!prop) | |
1022 | return -ENOMEM; | |
1023 | dev->mode_config.link_status_property = prop; | |
1024 | ||
66660d4c DA |
1025 | prop = drm_property_create_bool(dev, DRM_MODE_PROP_IMMUTABLE, "non-desktop"); |
1026 | if (!prop) | |
1027 | return -ENOMEM; | |
1028 | dev->mode_config.non_desktop_property = prop; | |
1029 | ||
52217195 DV |
1030 | return 0; |
1031 | } | |
1032 | ||
1033 | /** | |
1034 | * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties | |
1035 | * @dev: DRM device | |
1036 | * | |
1037 | * Called by a driver the first time a DVI-I connector is made. | |
1038 | */ | |
1039 | int drm_mode_create_dvi_i_properties(struct drm_device *dev) | |
1040 | { | |
1041 | struct drm_property *dvi_i_selector; | |
1042 | struct drm_property *dvi_i_subconnector; | |
1043 | ||
1044 | if (dev->mode_config.dvi_i_select_subconnector_property) | |
1045 | return 0; | |
1046 | ||
1047 | dvi_i_selector = | |
1048 | drm_property_create_enum(dev, 0, | |
1049 | "select subconnector", | |
1050 | drm_dvi_i_select_enum_list, | |
1051 | ARRAY_SIZE(drm_dvi_i_select_enum_list)); | |
1052 | dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector; | |
1053 | ||
1054 | dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, | |
1055 | "subconnector", | |
1056 | drm_dvi_i_subconnector_enum_list, | |
1057 | ARRAY_SIZE(drm_dvi_i_subconnector_enum_list)); | |
1058 | dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector; | |
1059 | ||
1060 | return 0; | |
1061 | } | |
1062 | EXPORT_SYMBOL(drm_mode_create_dvi_i_properties); | |
1063 | ||
50525c33 SL |
1064 | /** |
1065 | * DOC: HDMI connector properties | |
1066 | * | |
1067 | * content type (HDMI specific): | |
1068 | * Indicates content type setting to be used in HDMI infoframes to indicate | |
1069 | * content type for the external device, so that it adjusts it's display | |
1070 | * settings accordingly. | |
1071 | * | |
1072 | * The value of this property can be one of the following: | |
1073 | * | |
1074 | * No Data: | |
1075 | * Content type is unknown | |
1076 | * Graphics: | |
1077 | * Content type is graphics | |
1078 | * Photo: | |
1079 | * Content type is photo | |
1080 | * Cinema: | |
1081 | * Content type is cinema | |
1082 | * Game: | |
1083 | * Content type is game | |
1084 | * | |
1085 | * Drivers can set up this property by calling | |
1086 | * drm_connector_attach_content_type_property(). Decoding to | |
ba609631 | 1087 | * infoframe values is done through drm_hdmi_avi_infoframe_content_type(). |
50525c33 SL |
1088 | */ |
1089 | ||
1090 | /** | |
1091 | * drm_connector_attach_content_type_property - attach content-type property | |
1092 | * @connector: connector to attach content type property on. | |
1093 | * | |
1094 | * Called by a driver the first time a HDMI connector is made. | |
1095 | */ | |
1096 | int drm_connector_attach_content_type_property(struct drm_connector *connector) | |
1097 | { | |
1098 | if (!drm_mode_create_content_type_property(connector->dev)) | |
1099 | drm_object_attach_property(&connector->base, | |
1100 | connector->dev->mode_config.content_type_property, | |
1101 | DRM_MODE_CONTENT_TYPE_NO_DATA); | |
1102 | return 0; | |
1103 | } | |
1104 | EXPORT_SYMBOL(drm_connector_attach_content_type_property); | |
1105 | ||
1106 | ||
1107 | /** | |
1108 | * drm_hdmi_avi_infoframe_content_type() - fill the HDMI AVI infoframe | |
1109 | * content type information, based | |
1110 | * on correspondent DRM property. | |
1111 | * @frame: HDMI AVI infoframe | |
1112 | * @conn_state: DRM display connector state | |
1113 | * | |
1114 | */ | |
1115 | void drm_hdmi_avi_infoframe_content_type(struct hdmi_avi_infoframe *frame, | |
1116 | const struct drm_connector_state *conn_state) | |
1117 | { | |
1118 | switch (conn_state->content_type) { | |
1119 | case DRM_MODE_CONTENT_TYPE_GRAPHICS: | |
1120 | frame->content_type = HDMI_CONTENT_TYPE_GRAPHICS; | |
1121 | break; | |
1122 | case DRM_MODE_CONTENT_TYPE_CINEMA: | |
1123 | frame->content_type = HDMI_CONTENT_TYPE_CINEMA; | |
1124 | break; | |
1125 | case DRM_MODE_CONTENT_TYPE_GAME: | |
1126 | frame->content_type = HDMI_CONTENT_TYPE_GAME; | |
1127 | break; | |
1128 | case DRM_MODE_CONTENT_TYPE_PHOTO: | |
1129 | frame->content_type = HDMI_CONTENT_TYPE_PHOTO; | |
1130 | break; | |
1131 | default: | |
1132 | /* Graphics is the default(0) */ | |
1133 | frame->content_type = HDMI_CONTENT_TYPE_GRAPHICS; | |
1134 | } | |
1135 | ||
1136 | frame->itc = conn_state->content_type != DRM_MODE_CONTENT_TYPE_NO_DATA; | |
1137 | } | |
1138 | EXPORT_SYMBOL(drm_hdmi_avi_infoframe_content_type); | |
1139 | ||
52217195 DV |
1140 | /** |
1141 | * drm_create_tv_properties - create TV specific connector properties | |
1142 | * @dev: DRM device | |
1143 | * @num_modes: number of different TV formats (modes) supported | |
1144 | * @modes: array of pointers to strings containing name of each format | |
1145 | * | |
1146 | * Called by a driver's TV initialization routine, this function creates | |
1147 | * the TV specific connector properties for a given device. Caller is | |
1148 | * responsible for allocating a list of format names and passing them to | |
1149 | * this routine. | |
1150 | */ | |
1151 | int drm_mode_create_tv_properties(struct drm_device *dev, | |
1152 | unsigned int num_modes, | |
1153 | const char * const modes[]) | |
1154 | { | |
1155 | struct drm_property *tv_selector; | |
1156 | struct drm_property *tv_subconnector; | |
1157 | unsigned int i; | |
1158 | ||
1159 | if (dev->mode_config.tv_select_subconnector_property) | |
1160 | return 0; | |
1161 | ||
1162 | /* | |
1163 | * Basic connector properties | |
1164 | */ | |
1165 | tv_selector = drm_property_create_enum(dev, 0, | |
1166 | "select subconnector", | |
1167 | drm_tv_select_enum_list, | |
1168 | ARRAY_SIZE(drm_tv_select_enum_list)); | |
1169 | if (!tv_selector) | |
1170 | goto nomem; | |
1171 | ||
1172 | dev->mode_config.tv_select_subconnector_property = tv_selector; | |
1173 | ||
1174 | tv_subconnector = | |
1175 | drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, | |
1176 | "subconnector", | |
1177 | drm_tv_subconnector_enum_list, | |
1178 | ARRAY_SIZE(drm_tv_subconnector_enum_list)); | |
1179 | if (!tv_subconnector) | |
1180 | goto nomem; | |
1181 | dev->mode_config.tv_subconnector_property = tv_subconnector; | |
1182 | ||
1183 | /* | |
1184 | * Other, TV specific properties: margins & TV modes. | |
1185 | */ | |
1186 | dev->mode_config.tv_left_margin_property = | |
1187 | drm_property_create_range(dev, 0, "left margin", 0, 100); | |
1188 | if (!dev->mode_config.tv_left_margin_property) | |
1189 | goto nomem; | |
1190 | ||
1191 | dev->mode_config.tv_right_margin_property = | |
1192 | drm_property_create_range(dev, 0, "right margin", 0, 100); | |
1193 | if (!dev->mode_config.tv_right_margin_property) | |
1194 | goto nomem; | |
1195 | ||
1196 | dev->mode_config.tv_top_margin_property = | |
1197 | drm_property_create_range(dev, 0, "top margin", 0, 100); | |
1198 | if (!dev->mode_config.tv_top_margin_property) | |
1199 | goto nomem; | |
1200 | ||
1201 | dev->mode_config.tv_bottom_margin_property = | |
1202 | drm_property_create_range(dev, 0, "bottom margin", 0, 100); | |
1203 | if (!dev->mode_config.tv_bottom_margin_property) | |
1204 | goto nomem; | |
1205 | ||
1206 | dev->mode_config.tv_mode_property = | |
1207 | drm_property_create(dev, DRM_MODE_PROP_ENUM, | |
1208 | "mode", num_modes); | |
1209 | if (!dev->mode_config.tv_mode_property) | |
1210 | goto nomem; | |
1211 | ||
1212 | for (i = 0; i < num_modes; i++) | |
30e9db6d | 1213 | drm_property_add_enum(dev->mode_config.tv_mode_property, |
52217195 DV |
1214 | i, modes[i]); |
1215 | ||
1216 | dev->mode_config.tv_brightness_property = | |
1217 | drm_property_create_range(dev, 0, "brightness", 0, 100); | |
1218 | if (!dev->mode_config.tv_brightness_property) | |
1219 | goto nomem; | |
1220 | ||
1221 | dev->mode_config.tv_contrast_property = | |
1222 | drm_property_create_range(dev, 0, "contrast", 0, 100); | |
1223 | if (!dev->mode_config.tv_contrast_property) | |
1224 | goto nomem; | |
1225 | ||
1226 | dev->mode_config.tv_flicker_reduction_property = | |
1227 | drm_property_create_range(dev, 0, "flicker reduction", 0, 100); | |
1228 | if (!dev->mode_config.tv_flicker_reduction_property) | |
1229 | goto nomem; | |
1230 | ||
1231 | dev->mode_config.tv_overscan_property = | |
1232 | drm_property_create_range(dev, 0, "overscan", 0, 100); | |
1233 | if (!dev->mode_config.tv_overscan_property) | |
1234 | goto nomem; | |
1235 | ||
1236 | dev->mode_config.tv_saturation_property = | |
1237 | drm_property_create_range(dev, 0, "saturation", 0, 100); | |
1238 | if (!dev->mode_config.tv_saturation_property) | |
1239 | goto nomem; | |
1240 | ||
1241 | dev->mode_config.tv_hue_property = | |
1242 | drm_property_create_range(dev, 0, "hue", 0, 100); | |
1243 | if (!dev->mode_config.tv_hue_property) | |
1244 | goto nomem; | |
1245 | ||
1246 | return 0; | |
1247 | nomem: | |
1248 | return -ENOMEM; | |
1249 | } | |
1250 | EXPORT_SYMBOL(drm_mode_create_tv_properties); | |
1251 | ||
1252 | /** | |
1253 | * drm_mode_create_scaling_mode_property - create scaling mode property | |
1254 | * @dev: DRM device | |
1255 | * | |
1256 | * Called by a driver the first time it's needed, must be attached to desired | |
1257 | * connectors. | |
8f6e1e22 ML |
1258 | * |
1259 | * Atomic drivers should use drm_connector_attach_scaling_mode_property() | |
1260 | * instead to correctly assign &drm_connector_state.picture_aspect_ratio | |
1261 | * in the atomic state. | |
52217195 DV |
1262 | */ |
1263 | int drm_mode_create_scaling_mode_property(struct drm_device *dev) | |
1264 | { | |
1265 | struct drm_property *scaling_mode; | |
1266 | ||
1267 | if (dev->mode_config.scaling_mode_property) | |
1268 | return 0; | |
1269 | ||
1270 | scaling_mode = | |
1271 | drm_property_create_enum(dev, 0, "scaling mode", | |
1272 | drm_scaling_mode_enum_list, | |
1273 | ARRAY_SIZE(drm_scaling_mode_enum_list)); | |
1274 | ||
1275 | dev->mode_config.scaling_mode_property = scaling_mode; | |
1276 | ||
1277 | return 0; | |
1278 | } | |
1279 | EXPORT_SYMBOL(drm_mode_create_scaling_mode_property); | |
1280 | ||
8f6e1e22 ML |
1281 | /** |
1282 | * drm_connector_attach_scaling_mode_property - attach atomic scaling mode property | |
1283 | * @connector: connector to attach scaling mode property on. | |
1284 | * @scaling_mode_mask: or'ed mask of BIT(%DRM_MODE_SCALE_\*). | |
1285 | * | |
1286 | * This is used to add support for scaling mode to atomic drivers. | |
1287 | * The scaling mode will be set to &drm_connector_state.picture_aspect_ratio | |
1288 | * and can be used from &drm_connector_helper_funcs->atomic_check for validation. | |
1289 | * | |
1290 | * This is the atomic version of drm_mode_create_scaling_mode_property(). | |
1291 | * | |
1292 | * Returns: | |
1293 | * Zero on success, negative errno on failure. | |
1294 | */ | |
1295 | int drm_connector_attach_scaling_mode_property(struct drm_connector *connector, | |
1296 | u32 scaling_mode_mask) | |
1297 | { | |
1298 | struct drm_device *dev = connector->dev; | |
1299 | struct drm_property *scaling_mode_property; | |
30e9db6d | 1300 | int i; |
8f6e1e22 ML |
1301 | const unsigned valid_scaling_mode_mask = |
1302 | (1U << ARRAY_SIZE(drm_scaling_mode_enum_list)) - 1; | |
1303 | ||
1304 | if (WARN_ON(hweight32(scaling_mode_mask) < 2 || | |
1305 | scaling_mode_mask & ~valid_scaling_mode_mask)) | |
1306 | return -EINVAL; | |
1307 | ||
1308 | scaling_mode_property = | |
1309 | drm_property_create(dev, DRM_MODE_PROP_ENUM, "scaling mode", | |
1310 | hweight32(scaling_mode_mask)); | |
1311 | ||
1312 | if (!scaling_mode_property) | |
1313 | return -ENOMEM; | |
1314 | ||
1315 | for (i = 0; i < ARRAY_SIZE(drm_scaling_mode_enum_list); i++) { | |
1316 | int ret; | |
1317 | ||
1318 | if (!(BIT(i) & scaling_mode_mask)) | |
1319 | continue; | |
1320 | ||
30e9db6d | 1321 | ret = drm_property_add_enum(scaling_mode_property, |
8f6e1e22 ML |
1322 | drm_scaling_mode_enum_list[i].type, |
1323 | drm_scaling_mode_enum_list[i].name); | |
1324 | ||
1325 | if (ret) { | |
1326 | drm_property_destroy(dev, scaling_mode_property); | |
1327 | ||
1328 | return ret; | |
1329 | } | |
1330 | } | |
1331 | ||
1332 | drm_object_attach_property(&connector->base, | |
1333 | scaling_mode_property, 0); | |
1334 | ||
1335 | connector->scaling_mode_property = scaling_mode_property; | |
1336 | ||
1337 | return 0; | |
1338 | } | |
1339 | EXPORT_SYMBOL(drm_connector_attach_scaling_mode_property); | |
1340 | ||
24557865 SP |
1341 | /** |
1342 | * drm_connector_attach_content_protection_property - attach content protection | |
1343 | * property | |
1344 | * | |
1345 | * @connector: connector to attach CP property on. | |
1346 | * | |
1347 | * This is used to add support for content protection on select connectors. | |
1348 | * Content Protection is intentionally vague to allow for different underlying | |
1349 | * technologies, however it is most implemented by HDCP. | |
1350 | * | |
1351 | * The content protection will be set to &drm_connector_state.content_protection | |
1352 | * | |
1353 | * Returns: | |
1354 | * Zero on success, negative errno on failure. | |
1355 | */ | |
1356 | int drm_connector_attach_content_protection_property( | |
1357 | struct drm_connector *connector) | |
1358 | { | |
1359 | struct drm_device *dev = connector->dev; | |
1360 | struct drm_property *prop; | |
1361 | ||
1362 | prop = drm_property_create_enum(dev, 0, "Content Protection", | |
1363 | drm_cp_enum_list, | |
1364 | ARRAY_SIZE(drm_cp_enum_list)); | |
1365 | if (!prop) | |
1366 | return -ENOMEM; | |
1367 | ||
1368 | drm_object_attach_property(&connector->base, prop, | |
1369 | DRM_MODE_CONTENT_PROTECTION_UNDESIRED); | |
1370 | ||
1371 | connector->content_protection_property = prop; | |
1372 | ||
1373 | return 0; | |
1374 | } | |
1375 | EXPORT_SYMBOL(drm_connector_attach_content_protection_property); | |
1376 | ||
52217195 DV |
1377 | /** |
1378 | * drm_mode_create_aspect_ratio_property - create aspect ratio property | |
1379 | * @dev: DRM device | |
1380 | * | |
1381 | * Called by a driver the first time it's needed, must be attached to desired | |
1382 | * connectors. | |
1383 | * | |
1384 | * Returns: | |
1385 | * Zero on success, negative errno on failure. | |
1386 | */ | |
1387 | int drm_mode_create_aspect_ratio_property(struct drm_device *dev) | |
1388 | { | |
1389 | if (dev->mode_config.aspect_ratio_property) | |
1390 | return 0; | |
1391 | ||
1392 | dev->mode_config.aspect_ratio_property = | |
1393 | drm_property_create_enum(dev, 0, "aspect ratio", | |
1394 | drm_aspect_ratio_enum_list, | |
1395 | ARRAY_SIZE(drm_aspect_ratio_enum_list)); | |
1396 | ||
1397 | if (dev->mode_config.aspect_ratio_property == NULL) | |
1398 | return -ENOMEM; | |
1399 | ||
1400 | return 0; | |
1401 | } | |
1402 | EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property); | |
1403 | ||
50525c33 SL |
1404 | /** |
1405 | * drm_mode_create_content_type_property - create content type property | |
1406 | * @dev: DRM device | |
1407 | * | |
1408 | * Called by a driver the first time it's needed, must be attached to desired | |
1409 | * connectors. | |
1410 | * | |
1411 | * Returns: | |
1412 | * Zero on success, negative errno on failure. | |
1413 | */ | |
1414 | int drm_mode_create_content_type_property(struct drm_device *dev) | |
1415 | { | |
1416 | if (dev->mode_config.content_type_property) | |
1417 | return 0; | |
1418 | ||
1419 | dev->mode_config.content_type_property = | |
1420 | drm_property_create_enum(dev, 0, "content type", | |
1421 | drm_content_type_enum_list, | |
1422 | ARRAY_SIZE(drm_content_type_enum_list)); | |
1423 | ||
1424 | if (dev->mode_config.content_type_property == NULL) | |
1425 | return -ENOMEM; | |
1426 | ||
1427 | return 0; | |
1428 | } | |
1429 | EXPORT_SYMBOL(drm_mode_create_content_type_property); | |
1430 | ||
52217195 DV |
1431 | /** |
1432 | * drm_mode_create_suggested_offset_properties - create suggests offset properties | |
1433 | * @dev: DRM device | |
1434 | * | |
1435 | * Create the the suggested x/y offset property for connectors. | |
1436 | */ | |
1437 | int drm_mode_create_suggested_offset_properties(struct drm_device *dev) | |
1438 | { | |
1439 | if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property) | |
1440 | return 0; | |
1441 | ||
1442 | dev->mode_config.suggested_x_property = | |
1443 | drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff); | |
1444 | ||
1445 | dev->mode_config.suggested_y_property = | |
1446 | drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff); | |
1447 | ||
1448 | if (dev->mode_config.suggested_x_property == NULL || | |
1449 | dev->mode_config.suggested_y_property == NULL) | |
1450 | return -ENOMEM; | |
1451 | return 0; | |
1452 | } | |
1453 | EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties); | |
1454 | ||
1455 | /** | |
97e14fbe | 1456 | * drm_connector_set_path_property - set tile property on connector |
52217195 DV |
1457 | * @connector: connector to set property on. |
1458 | * @path: path to use for property; must not be NULL. | |
1459 | * | |
1460 | * This creates a property to expose to userspace to specify a | |
1461 | * connector path. This is mainly used for DisplayPort MST where | |
1462 | * connectors have a topology and we want to allow userspace to give | |
1463 | * them more meaningful names. | |
1464 | * | |
1465 | * Returns: | |
1466 | * Zero on success, negative errno on failure. | |
1467 | */ | |
97e14fbe DV |
1468 | int drm_connector_set_path_property(struct drm_connector *connector, |
1469 | const char *path) | |
52217195 DV |
1470 | { |
1471 | struct drm_device *dev = connector->dev; | |
1472 | int ret; | |
1473 | ||
1474 | ret = drm_property_replace_global_blob(dev, | |
1475 | &connector->path_blob_ptr, | |
1476 | strlen(path) + 1, | |
1477 | path, | |
1478 | &connector->base, | |
1479 | dev->mode_config.path_property); | |
1480 | return ret; | |
1481 | } | |
97e14fbe | 1482 | EXPORT_SYMBOL(drm_connector_set_path_property); |
52217195 DV |
1483 | |
1484 | /** | |
97e14fbe | 1485 | * drm_connector_set_tile_property - set tile property on connector |
52217195 DV |
1486 | * @connector: connector to set property on. |
1487 | * | |
1488 | * This looks up the tile information for a connector, and creates a | |
1489 | * property for userspace to parse if it exists. The property is of | |
1490 | * the form of 8 integers using ':' as a separator. | |
1491 | * | |
1492 | * Returns: | |
1493 | * Zero on success, errno on failure. | |
1494 | */ | |
97e14fbe | 1495 | int drm_connector_set_tile_property(struct drm_connector *connector) |
52217195 DV |
1496 | { |
1497 | struct drm_device *dev = connector->dev; | |
1498 | char tile[256]; | |
1499 | int ret; | |
1500 | ||
1501 | if (!connector->has_tile) { | |
1502 | ret = drm_property_replace_global_blob(dev, | |
1503 | &connector->tile_blob_ptr, | |
1504 | 0, | |
1505 | NULL, | |
1506 | &connector->base, | |
1507 | dev->mode_config.tile_property); | |
1508 | return ret; | |
1509 | } | |
1510 | ||
1511 | snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d", | |
1512 | connector->tile_group->id, connector->tile_is_single_monitor, | |
1513 | connector->num_h_tile, connector->num_v_tile, | |
1514 | connector->tile_h_loc, connector->tile_v_loc, | |
1515 | connector->tile_h_size, connector->tile_v_size); | |
1516 | ||
1517 | ret = drm_property_replace_global_blob(dev, | |
1518 | &connector->tile_blob_ptr, | |
1519 | strlen(tile) + 1, | |
1520 | tile, | |
1521 | &connector->base, | |
1522 | dev->mode_config.tile_property); | |
1523 | return ret; | |
1524 | } | |
97e14fbe | 1525 | EXPORT_SYMBOL(drm_connector_set_tile_property); |
52217195 DV |
1526 | |
1527 | /** | |
c555f023 | 1528 | * drm_connector_update_edid_property - update the edid property of a connector |
52217195 DV |
1529 | * @connector: drm connector |
1530 | * @edid: new value of the edid property | |
1531 | * | |
1532 | * This function creates a new blob modeset object and assigns its id to the | |
1533 | * connector's edid property. | |
1534 | * | |
1535 | * Returns: | |
1536 | * Zero on success, negative errno on failure. | |
1537 | */ | |
c555f023 | 1538 | int drm_connector_update_edid_property(struct drm_connector *connector, |
97e14fbe | 1539 | const struct edid *edid) |
52217195 DV |
1540 | { |
1541 | struct drm_device *dev = connector->dev; | |
1542 | size_t size = 0; | |
1543 | int ret; | |
1544 | ||
1545 | /* ignore requests to set edid when overridden */ | |
1546 | if (connector->override_edid) | |
1547 | return 0; | |
1548 | ||
1549 | if (edid) | |
1550 | size = EDID_LENGTH * (1 + edid->extensions); | |
1551 | ||
170178fe KP |
1552 | /* Set the display info, using edid if available, otherwise |
1553 | * reseting the values to defaults. This duplicates the work | |
1554 | * done in drm_add_edid_modes, but that function is not | |
1555 | * consistently called before this one in all drivers and the | |
1556 | * computation is cheap enough that it seems better to | |
1557 | * duplicate it rather than attempt to ensure some arbitrary | |
1558 | * ordering of calls. | |
1559 | */ | |
1560 | if (edid) | |
1561 | drm_add_display_info(connector, edid); | |
1562 | else | |
1563 | drm_reset_display_info(connector); | |
1564 | ||
66660d4c DA |
1565 | drm_object_property_set_value(&connector->base, |
1566 | dev->mode_config.non_desktop_property, | |
1567 | connector->display_info.non_desktop); | |
1568 | ||
52217195 DV |
1569 | ret = drm_property_replace_global_blob(dev, |
1570 | &connector->edid_blob_ptr, | |
1571 | size, | |
1572 | edid, | |
1573 | &connector->base, | |
1574 | dev->mode_config.edid_property); | |
1575 | return ret; | |
1576 | } | |
c555f023 | 1577 | EXPORT_SYMBOL(drm_connector_update_edid_property); |
52217195 | 1578 | |
40ee6fbe | 1579 | /** |
97e14fbe | 1580 | * drm_connector_set_link_status_property - Set link status property of a connector |
40ee6fbe MN |
1581 | * @connector: drm connector |
1582 | * @link_status: new value of link status property (0: Good, 1: Bad) | |
1583 | * | |
1584 | * In usual working scenario, this link status property will always be set to | |
1585 | * "GOOD". If something fails during or after a mode set, the kernel driver | |
1586 | * may set this link status property to "BAD". The caller then needs to send a | |
1587 | * hotplug uevent for userspace to re-check the valid modes through | |
1588 | * GET_CONNECTOR_IOCTL and retry modeset. | |
1589 | * | |
1590 | * Note: Drivers cannot rely on userspace to support this property and | |
1591 | * issue a modeset. As such, they may choose to handle issues (like | |
1592 | * re-training a link) without userspace's intervention. | |
1593 | * | |
1594 | * The reason for adding this property is to handle link training failures, but | |
1595 | * it is not limited to DP or link training. For example, if we implement | |
1596 | * asynchronous setcrtc, this property can be used to report any failures in that. | |
1597 | */ | |
97e14fbe DV |
1598 | void drm_connector_set_link_status_property(struct drm_connector *connector, |
1599 | uint64_t link_status) | |
40ee6fbe MN |
1600 | { |
1601 | struct drm_device *dev = connector->dev; | |
1602 | ||
1603 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); | |
1604 | connector->state->link_status = link_status; | |
1605 | drm_modeset_unlock(&dev->mode_config.connection_mutex); | |
1606 | } | |
97e14fbe | 1607 | EXPORT_SYMBOL(drm_connector_set_link_status_property); |
40ee6fbe | 1608 | |
47e22ff1 RS |
1609 | /** |
1610 | * drm_connector_attach_max_bpc_property - attach "max bpc" property | |
1611 | * @connector: connector to attach max bpc property on. | |
1612 | * @min: The minimum bit depth supported by the connector. | |
1613 | * @max: The maximum bit depth supported by the connector. | |
1614 | * | |
1615 | * This is used to add support for limiting the bit depth on a connector. | |
1616 | * | |
1617 | * Returns: | |
1618 | * Zero on success, negative errno on failure. | |
1619 | */ | |
1620 | int drm_connector_attach_max_bpc_property(struct drm_connector *connector, | |
1621 | int min, int max) | |
1622 | { | |
1623 | struct drm_device *dev = connector->dev; | |
1624 | struct drm_property *prop; | |
1625 | ||
1626 | prop = connector->max_bpc_property; | |
1627 | if (!prop) { | |
1628 | prop = drm_property_create_range(dev, 0, "max bpc", min, max); | |
1629 | if (!prop) | |
1630 | return -ENOMEM; | |
1631 | ||
1632 | connector->max_bpc_property = prop; | |
1633 | } | |
1634 | ||
1635 | drm_object_attach_property(&connector->base, prop, max); | |
1636 | connector->state->max_requested_bpc = max; | |
1637 | connector->state->max_bpc = max; | |
1638 | ||
1639 | return 0; | |
1640 | } | |
1641 | EXPORT_SYMBOL(drm_connector_attach_max_bpc_property); | |
1642 | ||
8d70f395 HG |
1643 | /** |
1644 | * drm_connector_init_panel_orientation_property - | |
1645 | * initialize the connecters panel_orientation property | |
1646 | * @connector: connector for which to init the panel-orientation property. | |
1647 | * @width: width in pixels of the panel, used for panel quirk detection | |
1648 | * @height: height in pixels of the panel, used for panel quirk detection | |
1649 | * | |
1650 | * This function should only be called for built-in panels, after setting | |
1651 | * connector->display_info.panel_orientation first (if known). | |
1652 | * | |
1653 | * This function will check for platform specific (e.g. DMI based) quirks | |
1654 | * overriding display_info.panel_orientation first, then if panel_orientation | |
1655 | * is not DRM_MODE_PANEL_ORIENTATION_UNKNOWN it will attach the | |
1656 | * "panel orientation" property to the connector. | |
1657 | * | |
1658 | * Returns: | |
1659 | * Zero on success, negative errno on failure. | |
1660 | */ | |
1661 | int drm_connector_init_panel_orientation_property( | |
1662 | struct drm_connector *connector, int width, int height) | |
1663 | { | |
1664 | struct drm_device *dev = connector->dev; | |
1665 | struct drm_display_info *info = &connector->display_info; | |
1666 | struct drm_property *prop; | |
1667 | int orientation_quirk; | |
1668 | ||
1669 | orientation_quirk = drm_get_panel_orientation_quirk(width, height); | |
1670 | if (orientation_quirk != DRM_MODE_PANEL_ORIENTATION_UNKNOWN) | |
1671 | info->panel_orientation = orientation_quirk; | |
1672 | ||
1673 | if (info->panel_orientation == DRM_MODE_PANEL_ORIENTATION_UNKNOWN) | |
1674 | return 0; | |
1675 | ||
1676 | prop = dev->mode_config.panel_orientation_property; | |
1677 | if (!prop) { | |
1678 | prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, | |
1679 | "panel orientation", | |
1680 | drm_panel_orientation_enum_list, | |
1681 | ARRAY_SIZE(drm_panel_orientation_enum_list)); | |
1682 | if (!prop) | |
1683 | return -ENOMEM; | |
1684 | ||
1685 | dev->mode_config.panel_orientation_property = prop; | |
1686 | } | |
1687 | ||
1688 | drm_object_attach_property(&connector->base, prop, | |
1689 | info->panel_orientation); | |
1690 | return 0; | |
1691 | } | |
1692 | EXPORT_SYMBOL(drm_connector_init_panel_orientation_property); | |
1693 | ||
97e14fbe | 1694 | int drm_connector_set_obj_prop(struct drm_mode_object *obj, |
52217195 DV |
1695 | struct drm_property *property, |
1696 | uint64_t value) | |
1697 | { | |
1698 | int ret = -EINVAL; | |
1699 | struct drm_connector *connector = obj_to_connector(obj); | |
1700 | ||
1701 | /* Do DPMS ourselves */ | |
1702 | if (property == connector->dev->mode_config.dpms_property) { | |
1703 | ret = (*connector->funcs->dpms)(connector, (int)value); | |
1704 | } else if (connector->funcs->set_property) | |
1705 | ret = connector->funcs->set_property(connector, property, value); | |
1706 | ||
144a7999 | 1707 | if (!ret) |
52217195 DV |
1708 | drm_object_property_set_value(&connector->base, property, value); |
1709 | return ret; | |
1710 | } | |
1711 | ||
97e14fbe DV |
1712 | int drm_connector_property_set_ioctl(struct drm_device *dev, |
1713 | void *data, struct drm_file *file_priv) | |
52217195 DV |
1714 | { |
1715 | struct drm_mode_connector_set_property *conn_set_prop = data; | |
1716 | struct drm_mode_obj_set_property obj_set_prop = { | |
1717 | .value = conn_set_prop->value, | |
1718 | .prop_id = conn_set_prop->prop_id, | |
1719 | .obj_id = conn_set_prop->connector_id, | |
1720 | .obj_type = DRM_MODE_OBJECT_CONNECTOR | |
1721 | }; | |
1722 | ||
1723 | /* It does all the locking and checking we need */ | |
1724 | return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv); | |
1725 | } | |
1726 | ||
1727 | static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector) | |
1728 | { | |
1729 | /* For atomic drivers only state objects are synchronously updated and | |
1730 | * protected by modeset locks, so check those first. */ | |
1731 | if (connector->state) | |
1732 | return connector->state->best_encoder; | |
1733 | return connector->encoder; | |
1734 | } | |
1735 | ||
c3ff0cdb AN |
1736 | static bool |
1737 | drm_mode_expose_to_userspace(const struct drm_display_mode *mode, | |
1738 | const struct list_head *export_list, | |
1739 | const struct drm_file *file_priv) | |
52217195 DV |
1740 | { |
1741 | /* | |
1742 | * If user-space hasn't configured the driver to expose the stereo 3D | |
1743 | * modes, don't expose them. | |
1744 | */ | |
1745 | if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode)) | |
1746 | return false; | |
c3ff0cdb AN |
1747 | /* |
1748 | * If user-space hasn't configured the driver to expose the modes | |
1749 | * with aspect-ratio, don't expose them. However if such a mode | |
1750 | * is unique, let it be exposed, but reset the aspect-ratio flags | |
1751 | * while preparing the list of user-modes. | |
1752 | */ | |
1753 | if (!file_priv->aspect_ratio_allowed) { | |
1754 | struct drm_display_mode *mode_itr; | |
1755 | ||
1756 | list_for_each_entry(mode_itr, export_list, export_head) | |
1757 | if (drm_mode_match(mode_itr, mode, | |
1758 | DRM_MODE_MATCH_TIMINGS | | |
1759 | DRM_MODE_MATCH_CLOCK | | |
1760 | DRM_MODE_MATCH_FLAGS | | |
1761 | DRM_MODE_MATCH_3D_FLAGS)) | |
1762 | return false; | |
1763 | } | |
52217195 DV |
1764 | |
1765 | return true; | |
1766 | } | |
1767 | ||
1768 | int drm_mode_getconnector(struct drm_device *dev, void *data, | |
1769 | struct drm_file *file_priv) | |
1770 | { | |
1771 | struct drm_mode_get_connector *out_resp = data; | |
1772 | struct drm_connector *connector; | |
1773 | struct drm_encoder *encoder; | |
1774 | struct drm_display_mode *mode; | |
1775 | int mode_count = 0; | |
1776 | int encoders_count = 0; | |
1777 | int ret = 0; | |
1778 | int copied = 0; | |
1779 | int i; | |
1780 | struct drm_mode_modeinfo u_mode; | |
1781 | struct drm_mode_modeinfo __user *mode_ptr; | |
1782 | uint32_t __user *encoder_ptr; | |
c3ff0cdb | 1783 | LIST_HEAD(export_list); |
52217195 DV |
1784 | |
1785 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
69fdf420 | 1786 | return -EOPNOTSUPP; |
52217195 DV |
1787 | |
1788 | memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo)); | |
1789 | ||
418da172 | 1790 | connector = drm_connector_lookup(dev, file_priv, out_resp->connector_id); |
91eefc05 DV |
1791 | if (!connector) |
1792 | return -ENOENT; | |
1793 | ||
83aefbb8 VS |
1794 | drm_connector_for_each_possible_encoder(connector, encoder, i) |
1795 | encoders_count++; | |
52217195 | 1796 | |
91eefc05 DV |
1797 | if ((out_resp->count_encoders >= encoders_count) && encoders_count) { |
1798 | copied = 0; | |
1799 | encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr); | |
83aefbb8 VS |
1800 | |
1801 | drm_connector_for_each_possible_encoder(connector, encoder, i) { | |
1802 | if (put_user(encoder->base.id, encoder_ptr + copied)) { | |
1803 | ret = -EFAULT; | |
1804 | goto out; | |
91eefc05 | 1805 | } |
83aefbb8 | 1806 | copied++; |
91eefc05 DV |
1807 | } |
1808 | } | |
1809 | out_resp->count_encoders = encoders_count; | |
1810 | ||
1811 | out_resp->connector_id = connector->base.id; | |
1812 | out_resp->connector_type = connector->connector_type; | |
1813 | out_resp->connector_type_id = connector->connector_type_id; | |
1814 | ||
1815 | mutex_lock(&dev->mode_config.mutex); | |
52217195 DV |
1816 | if (out_resp->count_modes == 0) { |
1817 | connector->funcs->fill_modes(connector, | |
1818 | dev->mode_config.max_width, | |
1819 | dev->mode_config.max_height); | |
1820 | } | |
1821 | ||
52217195 DV |
1822 | out_resp->mm_width = connector->display_info.width_mm; |
1823 | out_resp->mm_height = connector->display_info.height_mm; | |
1824 | out_resp->subpixel = connector->display_info.subpixel_order; | |
1825 | out_resp->connection = connector->status; | |
1826 | ||
91eefc05 DV |
1827 | /* delayed so we get modes regardless of pre-fill_modes state */ |
1828 | list_for_each_entry(mode, &connector->modes, head) | |
c3ff0cdb AN |
1829 | if (drm_mode_expose_to_userspace(mode, &export_list, |
1830 | file_priv)) { | |
1831 | list_add_tail(&mode->export_head, &export_list); | |
91eefc05 | 1832 | mode_count++; |
c3ff0cdb | 1833 | } |
52217195 DV |
1834 | |
1835 | /* | |
1836 | * This ioctl is called twice, once to determine how much space is | |
1837 | * needed, and the 2nd time to fill it. | |
c3ff0cdb AN |
1838 | * The modes that need to be exposed to the user are maintained in the |
1839 | * 'export_list'. When the ioctl is called first time to determine the, | |
1840 | * space, the export_list gets filled, to find the no.of modes. In the | |
1841 | * 2nd time, the user modes are filled, one by one from the export_list. | |
52217195 DV |
1842 | */ |
1843 | if ((out_resp->count_modes >= mode_count) && mode_count) { | |
1844 | copied = 0; | |
1845 | mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr; | |
c3ff0cdb | 1846 | list_for_each_entry(mode, &export_list, export_head) { |
52217195 | 1847 | drm_mode_convert_to_umode(&u_mode, mode); |
c3ff0cdb AN |
1848 | /* |
1849 | * Reset aspect ratio flags of user-mode, if modes with | |
1850 | * aspect-ratio are not supported. | |
1851 | */ | |
1852 | if (!file_priv->aspect_ratio_allowed) | |
1853 | u_mode.flags &= ~DRM_MODE_FLAG_PIC_AR_MASK; | |
52217195 DV |
1854 | if (copy_to_user(mode_ptr + copied, |
1855 | &u_mode, sizeof(u_mode))) { | |
1856 | ret = -EFAULT; | |
e94ac351 DV |
1857 | mutex_unlock(&dev->mode_config.mutex); |
1858 | ||
52217195 DV |
1859 | goto out; |
1860 | } | |
1861 | copied++; | |
1862 | } | |
1863 | } | |
1864 | out_resp->count_modes = mode_count; | |
52217195 | 1865 | mutex_unlock(&dev->mode_config.mutex); |
e94ac351 DV |
1866 | |
1867 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); | |
1868 | encoder = drm_connector_get_encoder(connector); | |
1869 | if (encoder) | |
1870 | out_resp->encoder_id = encoder->base.id; | |
1871 | else | |
1872 | out_resp->encoder_id = 0; | |
1873 | ||
1874 | /* Only grab properties after probing, to make sure EDID and other | |
1875 | * properties reflect the latest status. */ | |
1876 | ret = drm_mode_object_get_properties(&connector->base, file_priv->atomic, | |
1877 | (uint32_t __user *)(unsigned long)(out_resp->props_ptr), | |
1878 | (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr), | |
1879 | &out_resp->count_props); | |
1880 | drm_modeset_unlock(&dev->mode_config.connection_mutex); | |
1881 | ||
1882 | out: | |
ad093607 | 1883 | drm_connector_put(connector); |
52217195 DV |
1884 | |
1885 | return ret; | |
1886 | } | |
1887 | ||
9498c19b DV |
1888 | |
1889 | /** | |
1890 | * DOC: Tile group | |
1891 | * | |
1892 | * Tile groups are used to represent tiled monitors with a unique integer | |
1893 | * identifier. Tiled monitors using DisplayID v1.3 have a unique 8-byte handle, | |
1894 | * we store this in a tile group, so we have a common identifier for all tiles | |
1895 | * in a monitor group. The property is called "TILE". Drivers can manage tile | |
1896 | * groups using drm_mode_create_tile_group(), drm_mode_put_tile_group() and | |
1897 | * drm_mode_get_tile_group(). But this is only needed for internal panels where | |
1898 | * the tile group information is exposed through a non-standard way. | |
1899 | */ | |
1900 | ||
1901 | static void drm_tile_group_free(struct kref *kref) | |
1902 | { | |
1903 | struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount); | |
1904 | struct drm_device *dev = tg->dev; | |
1905 | mutex_lock(&dev->mode_config.idr_mutex); | |
1906 | idr_remove(&dev->mode_config.tile_idr, tg->id); | |
1907 | mutex_unlock(&dev->mode_config.idr_mutex); | |
1908 | kfree(tg); | |
1909 | } | |
1910 | ||
1911 | /** | |
1912 | * drm_mode_put_tile_group - drop a reference to a tile group. | |
1913 | * @dev: DRM device | |
1914 | * @tg: tile group to drop reference to. | |
1915 | * | |
1916 | * drop reference to tile group and free if 0. | |
1917 | */ | |
1918 | void drm_mode_put_tile_group(struct drm_device *dev, | |
1919 | struct drm_tile_group *tg) | |
1920 | { | |
1921 | kref_put(&tg->refcount, drm_tile_group_free); | |
1922 | } | |
1923 | EXPORT_SYMBOL(drm_mode_put_tile_group); | |
1924 | ||
1925 | /** | |
1926 | * drm_mode_get_tile_group - get a reference to an existing tile group | |
1927 | * @dev: DRM device | |
1928 | * @topology: 8-bytes unique per monitor. | |
1929 | * | |
1930 | * Use the unique bytes to get a reference to an existing tile group. | |
1931 | * | |
1932 | * RETURNS: | |
1933 | * tile group or NULL if not found. | |
1934 | */ | |
1935 | struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev, | |
1936 | char topology[8]) | |
1937 | { | |
1938 | struct drm_tile_group *tg; | |
1939 | int id; | |
1940 | mutex_lock(&dev->mode_config.idr_mutex); | |
1941 | idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) { | |
1942 | if (!memcmp(tg->group_data, topology, 8)) { | |
1943 | if (!kref_get_unless_zero(&tg->refcount)) | |
1944 | tg = NULL; | |
1945 | mutex_unlock(&dev->mode_config.idr_mutex); | |
1946 | return tg; | |
1947 | } | |
1948 | } | |
1949 | mutex_unlock(&dev->mode_config.idr_mutex); | |
1950 | return NULL; | |
1951 | } | |
1952 | EXPORT_SYMBOL(drm_mode_get_tile_group); | |
1953 | ||
1954 | /** | |
1955 | * drm_mode_create_tile_group - create a tile group from a displayid description | |
1956 | * @dev: DRM device | |
1957 | * @topology: 8-bytes unique per monitor. | |
1958 | * | |
1959 | * Create a tile group for the unique monitor, and get a unique | |
1960 | * identifier for the tile group. | |
1961 | * | |
1962 | * RETURNS: | |
1963 | * new tile group or error. | |
1964 | */ | |
1965 | struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev, | |
1966 | char topology[8]) | |
1967 | { | |
1968 | struct drm_tile_group *tg; | |
1969 | int ret; | |
1970 | ||
1971 | tg = kzalloc(sizeof(*tg), GFP_KERNEL); | |
1972 | if (!tg) | |
1973 | return ERR_PTR(-ENOMEM); | |
1974 | ||
1975 | kref_init(&tg->refcount); | |
1976 | memcpy(tg->group_data, topology, 8); | |
1977 | tg->dev = dev; | |
1978 | ||
1979 | mutex_lock(&dev->mode_config.idr_mutex); | |
1980 | ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL); | |
1981 | if (ret >= 0) { | |
1982 | tg->id = ret; | |
1983 | } else { | |
1984 | kfree(tg); | |
1985 | tg = ERR_PTR(ret); | |
1986 | } | |
1987 | ||
1988 | mutex_unlock(&dev->mode_config.idr_mutex); | |
1989 | return tg; | |
1990 | } | |
1991 | EXPORT_SYMBOL(drm_mode_create_tile_group); |