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