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