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Commit | Line | Data |
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52217195 DV |
1 | /* |
2 | * Copyright (c) 2016 Intel Corporation | |
3 | * | |
4 | * Permission to use, copy, modify, distribute, and sell this software and its | |
5 | * documentation for any purpose is hereby granted without fee, provided that | |
6 | * the above copyright notice appear in all copies and that both that copyright | |
7 | * notice and this permission notice appear in supporting documentation, and | |
8 | * that the name of the copyright holders not be used in advertising or | |
9 | * publicity pertaining to distribution of the software without specific, | |
10 | * written prior permission. The copyright holders make no representations | |
11 | * about the suitability of this software for any purpose. It is provided "as | |
12 | * is" without express or implied warranty. | |
13 | * | |
14 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
15 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
16 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
17 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
18 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
19 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
20 | * OF THIS SOFTWARE. | |
21 | */ | |
22 | ||
52217195 DV |
23 | #include <drm/drm_connector.h> |
24 | #include <drm/drm_edid.h> | |
9338203c | 25 | #include <drm/drm_encoder.h> |
8d70f395 | 26 | #include <drm/drm_utils.h> |
99f45e32 DV |
27 | #include <drm/drm_print.h> |
28 | #include <drm/drm_drv.h> | |
29 | #include <drm/drm_file.h> | |
30 | ||
31 | #include <linux/uaccess.h> | |
52217195 DV |
32 | |
33 | #include "drm_crtc_internal.h" | |
34 | #include "drm_internal.h" | |
35 | ||
ae2a6da8 DV |
36 | /** |
37 | * DOC: overview | |
38 | * | |
39 | * In DRM connectors are the general abstraction for display sinks, and include | |
40 | * als fixed panels or anything else that can display pixels in some form. As | |
41 | * opposed to all other KMS objects representing hardware (like CRTC, encoder or | |
42 | * plane abstractions) connectors can be hotplugged and unplugged at runtime. | |
ad093607 TR |
43 | * Hence they are reference-counted using drm_connector_get() and |
44 | * drm_connector_put(). | |
ae2a6da8 | 45 | * |
d574528a DV |
46 | * KMS driver must create, initialize, register and attach at a &struct |
47 | * drm_connector for each such sink. The instance is created as other KMS | |
aec97460 DV |
48 | * objects and initialized by setting the following fields. The connector is |
49 | * initialized with a call to drm_connector_init() with a pointer to the | |
50 | * &struct drm_connector_funcs and a connector type, and then exposed to | |
51 | * userspace with a call to drm_connector_register(). | |
ae2a6da8 DV |
52 | * |
53 | * Connectors must be attached to an encoder to be used. For devices that map | |
54 | * connectors to encoders 1:1, the connector should be attached at | |
cde4c44d | 55 | * initialization time with a call to drm_connector_attach_encoder(). The |
d574528a | 56 | * driver must also set the &drm_connector.encoder field to point to the |
ae2a6da8 DV |
57 | * attached encoder. |
58 | * | |
59 | * For connectors which are not fixed (like built-in panels) the driver needs to | |
60 | * support hotplug notifications. The simplest way to do that is by using the | |
61 | * probe helpers, see drm_kms_helper_poll_init() for connectors which don't have | |
62 | * hardware support for hotplug interrupts. Connectors with hardware hotplug | |
63 | * support can instead use e.g. drm_helper_hpd_irq_event(). | |
64 | */ | |
65 | ||
52217195 DV |
66 | struct drm_conn_prop_enum_list { |
67 | int type; | |
68 | const char *name; | |
69 | struct ida ida; | |
70 | }; | |
71 | ||
72 | /* | |
73 | * Connector and encoder types. | |
74 | */ | |
75 | static struct drm_conn_prop_enum_list drm_connector_enum_list[] = { | |
76 | { DRM_MODE_CONNECTOR_Unknown, "Unknown" }, | |
77 | { DRM_MODE_CONNECTOR_VGA, "VGA" }, | |
78 | { DRM_MODE_CONNECTOR_DVII, "DVI-I" }, | |
79 | { DRM_MODE_CONNECTOR_DVID, "DVI-D" }, | |
80 | { DRM_MODE_CONNECTOR_DVIA, "DVI-A" }, | |
81 | { DRM_MODE_CONNECTOR_Composite, "Composite" }, | |
82 | { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" }, | |
83 | { DRM_MODE_CONNECTOR_LVDS, "LVDS" }, | |
84 | { DRM_MODE_CONNECTOR_Component, "Component" }, | |
85 | { DRM_MODE_CONNECTOR_9PinDIN, "DIN" }, | |
86 | { DRM_MODE_CONNECTOR_DisplayPort, "DP" }, | |
87 | { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" }, | |
88 | { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" }, | |
89 | { DRM_MODE_CONNECTOR_TV, "TV" }, | |
90 | { DRM_MODE_CONNECTOR_eDP, "eDP" }, | |
91 | { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" }, | |
92 | { DRM_MODE_CONNECTOR_DSI, "DSI" }, | |
93 | { DRM_MODE_CONNECTOR_DPI, "DPI" }, | |
935774cd | 94 | { DRM_MODE_CONNECTOR_WRITEBACK, "Writeback" }, |
52217195 DV |
95 | }; |
96 | ||
97 | void drm_connector_ida_init(void) | |
98 | { | |
99 | int i; | |
100 | ||
101 | for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++) | |
102 | ida_init(&drm_connector_enum_list[i].ida); | |
103 | } | |
104 | ||
105 | void drm_connector_ida_destroy(void) | |
106 | { | |
107 | int i; | |
108 | ||
109 | for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++) | |
110 | ida_destroy(&drm_connector_enum_list[i].ida); | |
111 | } | |
112 | ||
113 | /** | |
114 | * drm_connector_get_cmdline_mode - reads the user's cmdline mode | |
115 | * @connector: connector to quwery | |
116 | * | |
ae2a6da8 | 117 | * The kernel supports per-connector configuration of its consoles through |
52217195 DV |
118 | * use of the video= parameter. This function parses that option and |
119 | * extracts the user's specified mode (or enable/disable status) for a | |
120 | * particular connector. This is typically only used during the early fbdev | |
121 | * setup. | |
122 | */ | |
123 | static void drm_connector_get_cmdline_mode(struct drm_connector *connector) | |
124 | { | |
125 | struct drm_cmdline_mode *mode = &connector->cmdline_mode; | |
126 | char *option = NULL; | |
127 | ||
128 | if (fb_get_options(connector->name, &option)) | |
129 | return; | |
130 | ||
131 | if (!drm_mode_parse_command_line_for_connector(option, | |
132 | connector, | |
133 | mode)) | |
134 | return; | |
135 | ||
136 | if (mode->force) { | |
6140cf20 JN |
137 | DRM_INFO("forcing %s connector %s\n", connector->name, |
138 | drm_get_connector_force_name(mode->force)); | |
52217195 DV |
139 | connector->force = mode->force; |
140 | } | |
141 | ||
142 | DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n", | |
143 | connector->name, | |
144 | mode->xres, mode->yres, | |
145 | mode->refresh_specified ? mode->refresh : 60, | |
146 | mode->rb ? " reduced blanking" : "", | |
147 | mode->margins ? " with margins" : "", | |
148 | mode->interlace ? " interlaced" : ""); | |
149 | } | |
150 | ||
151 | static void drm_connector_free(struct kref *kref) | |
152 | { | |
153 | struct drm_connector *connector = | |
154 | container_of(kref, struct drm_connector, base.refcount); | |
155 | struct drm_device *dev = connector->dev; | |
156 | ||
157 | drm_mode_object_unregister(dev, &connector->base); | |
158 | connector->funcs->destroy(connector); | |
159 | } | |
160 | ||
ea497bb9 | 161 | void drm_connector_free_work_fn(struct work_struct *work) |
a703c550 | 162 | { |
ea497bb9 DV |
163 | struct drm_connector *connector, *n; |
164 | struct drm_device *dev = | |
165 | container_of(work, struct drm_device, mode_config.connector_free_work); | |
166 | struct drm_mode_config *config = &dev->mode_config; | |
167 | unsigned long flags; | |
168 | struct llist_node *freed; | |
a703c550 | 169 | |
ea497bb9 DV |
170 | spin_lock_irqsave(&config->connector_list_lock, flags); |
171 | freed = llist_del_all(&config->connector_free_list); | |
172 | spin_unlock_irqrestore(&config->connector_list_lock, flags); | |
173 | ||
174 | llist_for_each_entry_safe(connector, n, freed, free_node) { | |
175 | drm_mode_object_unregister(dev, &connector->base); | |
176 | connector->funcs->destroy(connector); | |
177 | } | |
a703c550 DV |
178 | } |
179 | ||
52217195 DV |
180 | /** |
181 | * drm_connector_init - Init a preallocated connector | |
182 | * @dev: DRM device | |
183 | * @connector: the connector to init | |
184 | * @funcs: callbacks for this connector | |
185 | * @connector_type: user visible type of the connector | |
186 | * | |
187 | * Initialises a preallocated connector. Connectors should be | |
188 | * subclassed as part of driver connector objects. | |
189 | * | |
190 | * Returns: | |
191 | * Zero on success, error code on failure. | |
192 | */ | |
193 | int drm_connector_init(struct drm_device *dev, | |
194 | struct drm_connector *connector, | |
195 | const struct drm_connector_funcs *funcs, | |
196 | int connector_type) | |
197 | { | |
198 | struct drm_mode_config *config = &dev->mode_config; | |
199 | int ret; | |
200 | struct ida *connector_ida = | |
201 | &drm_connector_enum_list[connector_type].ida; | |
202 | ||
ba1f665f HM |
203 | WARN_ON(drm_drv_uses_atomic_modeset(dev) && |
204 | (!funcs->atomic_destroy_state || | |
205 | !funcs->atomic_duplicate_state)); | |
206 | ||
2135ea7a TR |
207 | ret = __drm_mode_object_add(dev, &connector->base, |
208 | DRM_MODE_OBJECT_CONNECTOR, | |
209 | false, drm_connector_free); | |
52217195 | 210 | if (ret) |
613051da | 211 | return ret; |
52217195 DV |
212 | |
213 | connector->base.properties = &connector->properties; | |
214 | connector->dev = dev; | |
215 | connector->funcs = funcs; | |
216 | ||
2a8d3eac VS |
217 | /* connector index is used with 32bit bitmasks */ |
218 | ret = ida_simple_get(&config->connector_ida, 0, 32, GFP_KERNEL); | |
219 | if (ret < 0) { | |
220 | DRM_DEBUG_KMS("Failed to allocate %s connector index: %d\n", | |
221 | drm_connector_enum_list[connector_type].name, | |
222 | ret); | |
52217195 | 223 | goto out_put; |
2a8d3eac | 224 | } |
52217195 DV |
225 | connector->index = ret; |
226 | ret = 0; | |
227 | ||
228 | connector->connector_type = connector_type; | |
229 | connector->connector_type_id = | |
230 | ida_simple_get(connector_ida, 1, 0, GFP_KERNEL); | |
231 | if (connector->connector_type_id < 0) { | |
232 | ret = connector->connector_type_id; | |
233 | goto out_put_id; | |
234 | } | |
235 | connector->name = | |
236 | kasprintf(GFP_KERNEL, "%s-%d", | |
237 | drm_connector_enum_list[connector_type].name, | |
238 | connector->connector_type_id); | |
239 | if (!connector->name) { | |
240 | ret = -ENOMEM; | |
241 | goto out_put_type_id; | |
242 | } | |
243 | ||
244 | INIT_LIST_HEAD(&connector->probed_modes); | |
245 | INIT_LIST_HEAD(&connector->modes); | |
e73ab00e | 246 | mutex_init(&connector->mutex); |
52217195 | 247 | connector->edid_blob_ptr = NULL; |
2de3a078 | 248 | connector->tile_blob_ptr = NULL; |
52217195 | 249 | connector->status = connector_status_unknown; |
8d70f395 HG |
250 | connector->display_info.panel_orientation = |
251 | DRM_MODE_PANEL_ORIENTATION_UNKNOWN; | |
52217195 DV |
252 | |
253 | drm_connector_get_cmdline_mode(connector); | |
254 | ||
255 | /* We should add connectors at the end to avoid upsetting the connector | |
256 | * index too much. */ | |
613051da | 257 | spin_lock_irq(&config->connector_list_lock); |
52217195 DV |
258 | list_add_tail(&connector->head, &config->connector_list); |
259 | config->num_connector++; | |
613051da | 260 | spin_unlock_irq(&config->connector_list_lock); |
52217195 | 261 | |
935774cd BS |
262 | if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL && |
263 | connector_type != DRM_MODE_CONNECTOR_WRITEBACK) | |
6b7e2d5c | 264 | drm_connector_attach_edid_property(connector); |
52217195 DV |
265 | |
266 | drm_object_attach_property(&connector->base, | |
267 | config->dpms_property, 0); | |
268 | ||
40ee6fbe MN |
269 | drm_object_attach_property(&connector->base, |
270 | config->link_status_property, | |
271 | 0); | |
272 | ||
66660d4c DA |
273 | drm_object_attach_property(&connector->base, |
274 | config->non_desktop_property, | |
275 | 0); | |
2de3a078 MN |
276 | drm_object_attach_property(&connector->base, |
277 | config->tile_property, | |
278 | 0); | |
66660d4c | 279 | |
52217195 DV |
280 | if (drm_core_check_feature(dev, DRIVER_ATOMIC)) { |
281 | drm_object_attach_property(&connector->base, config->prop_crtc_id, 0); | |
282 | } | |
283 | ||
284 | connector->debugfs_entry = NULL; | |
285 | out_put_type_id: | |
286 | if (ret) | |
587680c1 | 287 | ida_simple_remove(connector_ida, connector->connector_type_id); |
52217195 DV |
288 | out_put_id: |
289 | if (ret) | |
587680c1 | 290 | ida_simple_remove(&config->connector_ida, connector->index); |
52217195 DV |
291 | out_put: |
292 | if (ret) | |
293 | drm_mode_object_unregister(dev, &connector->base); | |
294 | ||
52217195 DV |
295 | return ret; |
296 | } | |
297 | EXPORT_SYMBOL(drm_connector_init); | |
298 | ||
6b7e2d5c GH |
299 | /** |
300 | * drm_connector_attach_edid_property - attach edid property. | |
6b7e2d5c GH |
301 | * @connector: the connector |
302 | * | |
303 | * Some connector types like DRM_MODE_CONNECTOR_VIRTUAL do not get a | |
304 | * edid property attached by default. This function can be used to | |
305 | * explicitly enable the edid property in these cases. | |
306 | */ | |
307 | void drm_connector_attach_edid_property(struct drm_connector *connector) | |
308 | { | |
309 | struct drm_mode_config *config = &connector->dev->mode_config; | |
310 | ||
311 | drm_object_attach_property(&connector->base, | |
312 | config->edid_property, | |
313 | 0); | |
314 | } | |
315 | EXPORT_SYMBOL(drm_connector_attach_edid_property); | |
316 | ||
52217195 | 317 | /** |
cde4c44d | 318 | * drm_connector_attach_encoder - attach a connector to an encoder |
52217195 DV |
319 | * @connector: connector to attach |
320 | * @encoder: encoder to attach @connector to | |
321 | * | |
322 | * This function links up a connector to an encoder. Note that the routing | |
323 | * restrictions between encoders and crtcs are exposed to userspace through the | |
324 | * possible_clones and possible_crtcs bitmasks. | |
325 | * | |
326 | * Returns: | |
327 | * Zero on success, negative errno on failure. | |
328 | */ | |
cde4c44d DV |
329 | int drm_connector_attach_encoder(struct drm_connector *connector, |
330 | struct drm_encoder *encoder) | |
52217195 DV |
331 | { |
332 | int i; | |
333 | ||
334 | /* | |
335 | * In the past, drivers have attempted to model the static association | |
336 | * of connector to encoder in simple connector/encoder devices using a | |
337 | * direct assignment of connector->encoder = encoder. This connection | |
338 | * is a logical one and the responsibility of the core, so drivers are | |
339 | * expected not to mess with this. | |
340 | * | |
341 | * Note that the error return should've been enough here, but a large | |
342 | * majority of drivers ignores the return value, so add in a big WARN | |
343 | * to get people's attention. | |
344 | */ | |
345 | if (WARN_ON(connector->encoder)) | |
346 | return -EINVAL; | |
347 | ||
83aefbb8 | 348 | for (i = 0; i < ARRAY_SIZE(connector->encoder_ids); i++) { |
52217195 DV |
349 | if (connector->encoder_ids[i] == 0) { |
350 | connector->encoder_ids[i] = encoder->base.id; | |
351 | return 0; | |
352 | } | |
353 | } | |
354 | return -ENOMEM; | |
355 | } | |
cde4c44d | 356 | EXPORT_SYMBOL(drm_connector_attach_encoder); |
52217195 | 357 | |
38cb8d96 VS |
358 | /** |
359 | * drm_connector_has_possible_encoder - check if the connector and encoder are assosicated with each other | |
360 | * @connector: the connector | |
361 | * @encoder: the encoder | |
362 | * | |
363 | * Returns: | |
364 | * True if @encoder is one of the possible encoders for @connector. | |
365 | */ | |
366 | bool drm_connector_has_possible_encoder(struct drm_connector *connector, | |
367 | struct drm_encoder *encoder) | |
368 | { | |
369 | struct drm_encoder *enc; | |
370 | int i; | |
371 | ||
372 | drm_connector_for_each_possible_encoder(connector, enc, i) { | |
373 | if (enc == encoder) | |
374 | return true; | |
375 | } | |
376 | ||
377 | return false; | |
378 | } | |
379 | EXPORT_SYMBOL(drm_connector_has_possible_encoder); | |
380 | ||
52217195 DV |
381 | static void drm_mode_remove(struct drm_connector *connector, |
382 | struct drm_display_mode *mode) | |
383 | { | |
384 | list_del(&mode->head); | |
385 | drm_mode_destroy(connector->dev, mode); | |
386 | } | |
387 | ||
388 | /** | |
389 | * drm_connector_cleanup - cleans up an initialised connector | |
390 | * @connector: connector to cleanup | |
391 | * | |
392 | * Cleans up the connector but doesn't free the object. | |
393 | */ | |
394 | void drm_connector_cleanup(struct drm_connector *connector) | |
395 | { | |
396 | struct drm_device *dev = connector->dev; | |
397 | struct drm_display_mode *mode, *t; | |
398 | ||
399 | /* The connector should have been removed from userspace long before | |
400 | * it is finally destroyed. | |
401 | */ | |
39b50c60 LP |
402 | if (WARN_ON(connector->registration_state == |
403 | DRM_CONNECTOR_REGISTERED)) | |
52217195 DV |
404 | drm_connector_unregister(connector); |
405 | ||
406 | if (connector->tile_group) { | |
407 | drm_mode_put_tile_group(dev, connector->tile_group); | |
408 | connector->tile_group = NULL; | |
409 | } | |
410 | ||
411 | list_for_each_entry_safe(mode, t, &connector->probed_modes, head) | |
412 | drm_mode_remove(connector, mode); | |
413 | ||
414 | list_for_each_entry_safe(mode, t, &connector->modes, head) | |
415 | drm_mode_remove(connector, mode); | |
416 | ||
9a47dba1 CJ |
417 | ida_simple_remove(&drm_connector_enum_list[connector->connector_type].ida, |
418 | connector->connector_type_id); | |
52217195 | 419 | |
9a47dba1 CJ |
420 | ida_simple_remove(&dev->mode_config.connector_ida, |
421 | connector->index); | |
52217195 DV |
422 | |
423 | kfree(connector->display_info.bus_formats); | |
424 | drm_mode_object_unregister(dev, &connector->base); | |
425 | kfree(connector->name); | |
426 | connector->name = NULL; | |
613051da | 427 | spin_lock_irq(&dev->mode_config.connector_list_lock); |
52217195 DV |
428 | list_del(&connector->head); |
429 | dev->mode_config.num_connector--; | |
613051da | 430 | spin_unlock_irq(&dev->mode_config.connector_list_lock); |
52217195 DV |
431 | |
432 | WARN_ON(connector->state && !connector->funcs->atomic_destroy_state); | |
433 | if (connector->state && connector->funcs->atomic_destroy_state) | |
434 | connector->funcs->atomic_destroy_state(connector, | |
435 | connector->state); | |
436 | ||
e73ab00e DV |
437 | mutex_destroy(&connector->mutex); |
438 | ||
52217195 DV |
439 | memset(connector, 0, sizeof(*connector)); |
440 | } | |
441 | EXPORT_SYMBOL(drm_connector_cleanup); | |
442 | ||
443 | /** | |
444 | * drm_connector_register - register a connector | |
445 | * @connector: the connector to register | |
446 | * | |
447 | * Register userspace interfaces for a connector | |
448 | * | |
449 | * Returns: | |
450 | * Zero on success, error code on failure. | |
451 | */ | |
452 | int drm_connector_register(struct drm_connector *connector) | |
453 | { | |
e73ab00e | 454 | int ret = 0; |
52217195 | 455 | |
e6e7b48b DV |
456 | if (!connector->dev->registered) |
457 | return 0; | |
458 | ||
e73ab00e | 459 | mutex_lock(&connector->mutex); |
39b50c60 | 460 | if (connector->registration_state != DRM_CONNECTOR_INITIALIZING) |
e73ab00e | 461 | goto unlock; |
52217195 DV |
462 | |
463 | ret = drm_sysfs_connector_add(connector); | |
464 | if (ret) | |
e73ab00e | 465 | goto unlock; |
52217195 DV |
466 | |
467 | ret = drm_debugfs_connector_add(connector); | |
468 | if (ret) { | |
469 | goto err_sysfs; | |
470 | } | |
471 | ||
472 | if (connector->funcs->late_register) { | |
473 | ret = connector->funcs->late_register(connector); | |
474 | if (ret) | |
475 | goto err_debugfs; | |
476 | } | |
477 | ||
478 | drm_mode_object_register(connector->dev, &connector->base); | |
479 | ||
39b50c60 | 480 | connector->registration_state = DRM_CONNECTOR_REGISTERED; |
e73ab00e | 481 | goto unlock; |
52217195 DV |
482 | |
483 | err_debugfs: | |
484 | drm_debugfs_connector_remove(connector); | |
485 | err_sysfs: | |
486 | drm_sysfs_connector_remove(connector); | |
e73ab00e DV |
487 | unlock: |
488 | mutex_unlock(&connector->mutex); | |
52217195 DV |
489 | return ret; |
490 | } | |
491 | EXPORT_SYMBOL(drm_connector_register); | |
492 | ||
493 | /** | |
494 | * drm_connector_unregister - unregister a connector | |
495 | * @connector: the connector to unregister | |
496 | * | |
497 | * Unregister userspace interfaces for a connector | |
498 | */ | |
499 | void drm_connector_unregister(struct drm_connector *connector) | |
500 | { | |
e73ab00e | 501 | mutex_lock(&connector->mutex); |
39b50c60 | 502 | if (connector->registration_state != DRM_CONNECTOR_REGISTERED) { |
e73ab00e | 503 | mutex_unlock(&connector->mutex); |
52217195 | 504 | return; |
e73ab00e | 505 | } |
52217195 DV |
506 | |
507 | if (connector->funcs->early_unregister) | |
508 | connector->funcs->early_unregister(connector); | |
509 | ||
510 | drm_sysfs_connector_remove(connector); | |
511 | drm_debugfs_connector_remove(connector); | |
512 | ||
39b50c60 | 513 | connector->registration_state = DRM_CONNECTOR_UNREGISTERED; |
e73ab00e | 514 | mutex_unlock(&connector->mutex); |
52217195 DV |
515 | } |
516 | EXPORT_SYMBOL(drm_connector_unregister); | |
517 | ||
518 | void drm_connector_unregister_all(struct drm_device *dev) | |
519 | { | |
520 | struct drm_connector *connector; | |
613051da | 521 | struct drm_connector_list_iter conn_iter; |
52217195 | 522 | |
b982dab1 | 523 | drm_connector_list_iter_begin(dev, &conn_iter); |
613051da | 524 | drm_for_each_connector_iter(connector, &conn_iter) |
52217195 | 525 | drm_connector_unregister(connector); |
b982dab1 | 526 | drm_connector_list_iter_end(&conn_iter); |
52217195 DV |
527 | } |
528 | ||
529 | int drm_connector_register_all(struct drm_device *dev) | |
530 | { | |
531 | struct drm_connector *connector; | |
613051da DV |
532 | struct drm_connector_list_iter conn_iter; |
533 | int ret = 0; | |
52217195 | 534 | |
b982dab1 | 535 | drm_connector_list_iter_begin(dev, &conn_iter); |
613051da | 536 | drm_for_each_connector_iter(connector, &conn_iter) { |
52217195 DV |
537 | ret = drm_connector_register(connector); |
538 | if (ret) | |
613051da | 539 | break; |
52217195 | 540 | } |
b982dab1 | 541 | drm_connector_list_iter_end(&conn_iter); |
52217195 | 542 | |
613051da DV |
543 | if (ret) |
544 | drm_connector_unregister_all(dev); | |
52217195 DV |
545 | return ret; |
546 | } | |
547 | ||
548 | /** | |
549 | * drm_get_connector_status_name - return a string for connector status | |
550 | * @status: connector status to compute name of | |
551 | * | |
552 | * In contrast to the other drm_get_*_name functions this one here returns a | |
553 | * const pointer and hence is threadsafe. | |
554 | */ | |
555 | const char *drm_get_connector_status_name(enum drm_connector_status status) | |
556 | { | |
557 | if (status == connector_status_connected) | |
558 | return "connected"; | |
559 | else if (status == connector_status_disconnected) | |
560 | return "disconnected"; | |
561 | else | |
562 | return "unknown"; | |
563 | } | |
564 | EXPORT_SYMBOL(drm_get_connector_status_name); | |
565 | ||
6140cf20 JN |
566 | /** |
567 | * drm_get_connector_force_name - return a string for connector force | |
568 | * @force: connector force to get name of | |
569 | * | |
570 | * Returns: const pointer to name. | |
571 | */ | |
572 | const char *drm_get_connector_force_name(enum drm_connector_force force) | |
573 | { | |
574 | switch (force) { | |
575 | case DRM_FORCE_UNSPECIFIED: | |
576 | return "unspecified"; | |
577 | case DRM_FORCE_OFF: | |
578 | return "off"; | |
579 | case DRM_FORCE_ON: | |
580 | return "on"; | |
581 | case DRM_FORCE_ON_DIGITAL: | |
582 | return "digital"; | |
583 | default: | |
584 | return "unknown"; | |
585 | } | |
586 | } | |
587 | ||
613051da DV |
588 | #ifdef CONFIG_LOCKDEP |
589 | static struct lockdep_map connector_list_iter_dep_map = { | |
590 | .name = "drm_connector_list_iter" | |
591 | }; | |
592 | #endif | |
593 | ||
594 | /** | |
b982dab1 | 595 | * drm_connector_list_iter_begin - initialize a connector_list iterator |
613051da DV |
596 | * @dev: DRM device |
597 | * @iter: connector_list iterator | |
598 | * | |
d574528a | 599 | * Sets @iter up to walk the &drm_mode_config.connector_list of @dev. @iter |
b982dab1 | 600 | * must always be cleaned up again by calling drm_connector_list_iter_end(). |
613051da DV |
601 | * Iteration itself happens using drm_connector_list_iter_next() or |
602 | * drm_for_each_connector_iter(). | |
603 | */ | |
b982dab1 TR |
604 | void drm_connector_list_iter_begin(struct drm_device *dev, |
605 | struct drm_connector_list_iter *iter) | |
613051da DV |
606 | { |
607 | iter->dev = dev; | |
608 | iter->conn = NULL; | |
609 | lock_acquire_shared_recursive(&connector_list_iter_dep_map, 0, 1, NULL, _RET_IP_); | |
610 | } | |
b982dab1 | 611 | EXPORT_SYMBOL(drm_connector_list_iter_begin); |
613051da | 612 | |
a703c550 DV |
613 | /* |
614 | * Extra-safe connector put function that works in any context. Should only be | |
615 | * used from the connector_iter functions, where we never really expect to | |
616 | * actually release the connector when dropping our final reference. | |
617 | */ | |
618 | static void | |
ea497bb9 | 619 | __drm_connector_put_safe(struct drm_connector *conn) |
a703c550 | 620 | { |
ea497bb9 DV |
621 | struct drm_mode_config *config = &conn->dev->mode_config; |
622 | ||
623 | lockdep_assert_held(&config->connector_list_lock); | |
624 | ||
625 | if (!refcount_dec_and_test(&conn->base.refcount.refcount)) | |
626 | return; | |
627 | ||
628 | llist_add(&conn->free_node, &config->connector_free_list); | |
629 | schedule_work(&config->connector_free_work); | |
a703c550 DV |
630 | } |
631 | ||
613051da DV |
632 | /** |
633 | * drm_connector_list_iter_next - return next connector | |
4f45c778 | 634 | * @iter: connector_list iterator |
613051da DV |
635 | * |
636 | * Returns the next connector for @iter, or NULL when the list walk has | |
637 | * completed. | |
638 | */ | |
639 | struct drm_connector * | |
640 | drm_connector_list_iter_next(struct drm_connector_list_iter *iter) | |
641 | { | |
642 | struct drm_connector *old_conn = iter->conn; | |
643 | struct drm_mode_config *config = &iter->dev->mode_config; | |
644 | struct list_head *lhead; | |
645 | unsigned long flags; | |
646 | ||
647 | spin_lock_irqsave(&config->connector_list_lock, flags); | |
648 | lhead = old_conn ? &old_conn->head : &config->connector_list; | |
649 | ||
650 | do { | |
651 | if (lhead->next == &config->connector_list) { | |
652 | iter->conn = NULL; | |
653 | break; | |
654 | } | |
655 | ||
656 | lhead = lhead->next; | |
657 | iter->conn = list_entry(lhead, struct drm_connector, head); | |
658 | ||
659 | /* loop until it's not a zombie connector */ | |
660 | } while (!kref_get_unless_zero(&iter->conn->base.refcount)); | |
613051da DV |
661 | |
662 | if (old_conn) | |
ea497bb9 DV |
663 | __drm_connector_put_safe(old_conn); |
664 | spin_unlock_irqrestore(&config->connector_list_lock, flags); | |
613051da DV |
665 | |
666 | return iter->conn; | |
667 | } | |
668 | EXPORT_SYMBOL(drm_connector_list_iter_next); | |
669 | ||
670 | /** | |
b982dab1 | 671 | * drm_connector_list_iter_end - tear down a connector_list iterator |
613051da DV |
672 | * @iter: connector_list iterator |
673 | * | |
674 | * Tears down @iter and releases any resources (like &drm_connector references) | |
675 | * acquired while walking the list. This must always be called, both when the | |
676 | * iteration completes fully or when it was aborted without walking the entire | |
677 | * list. | |
678 | */ | |
b982dab1 | 679 | void drm_connector_list_iter_end(struct drm_connector_list_iter *iter) |
613051da | 680 | { |
ea497bb9 DV |
681 | struct drm_mode_config *config = &iter->dev->mode_config; |
682 | unsigned long flags; | |
683 | ||
613051da | 684 | iter->dev = NULL; |
ea497bb9 DV |
685 | if (iter->conn) { |
686 | spin_lock_irqsave(&config->connector_list_lock, flags); | |
687 | __drm_connector_put_safe(iter->conn); | |
688 | spin_unlock_irqrestore(&config->connector_list_lock, flags); | |
689 | } | |
613051da DV |
690 | lock_release(&connector_list_iter_dep_map, 0, _RET_IP_); |
691 | } | |
b982dab1 | 692 | EXPORT_SYMBOL(drm_connector_list_iter_end); |
613051da | 693 | |
52217195 DV |
694 | static const struct drm_prop_enum_list drm_subpixel_enum_list[] = { |
695 | { SubPixelUnknown, "Unknown" }, | |
696 | { SubPixelHorizontalRGB, "Horizontal RGB" }, | |
697 | { SubPixelHorizontalBGR, "Horizontal BGR" }, | |
698 | { SubPixelVerticalRGB, "Vertical RGB" }, | |
699 | { SubPixelVerticalBGR, "Vertical BGR" }, | |
700 | { SubPixelNone, "None" }, | |
701 | }; | |
702 | ||
703 | /** | |
704 | * drm_get_subpixel_order_name - return a string for a given subpixel enum | |
705 | * @order: enum of subpixel_order | |
706 | * | |
707 | * Note you could abuse this and return something out of bounds, but that | |
708 | * would be a caller error. No unscrubbed user data should make it here. | |
709 | */ | |
710 | const char *drm_get_subpixel_order_name(enum subpixel_order order) | |
711 | { | |
712 | return drm_subpixel_enum_list[order].name; | |
713 | } | |
714 | EXPORT_SYMBOL(drm_get_subpixel_order_name); | |
715 | ||
716 | static const struct drm_prop_enum_list drm_dpms_enum_list[] = { | |
717 | { DRM_MODE_DPMS_ON, "On" }, | |
718 | { DRM_MODE_DPMS_STANDBY, "Standby" }, | |
719 | { DRM_MODE_DPMS_SUSPEND, "Suspend" }, | |
720 | { DRM_MODE_DPMS_OFF, "Off" } | |
721 | }; | |
722 | DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list) | |
723 | ||
40ee6fbe MN |
724 | static const struct drm_prop_enum_list drm_link_status_enum_list[] = { |
725 | { DRM_MODE_LINK_STATUS_GOOD, "Good" }, | |
726 | { DRM_MODE_LINK_STATUS_BAD, "Bad" }, | |
727 | }; | |
40ee6fbe | 728 | |
b3c6c8bf DV |
729 | /** |
730 | * drm_display_info_set_bus_formats - set the supported bus formats | |
731 | * @info: display info to store bus formats in | |
732 | * @formats: array containing the supported bus formats | |
733 | * @num_formats: the number of entries in the fmts array | |
734 | * | |
735 | * Store the supported bus formats in display info structure. | |
736 | * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for | |
737 | * a full list of available formats. | |
738 | */ | |
739 | int drm_display_info_set_bus_formats(struct drm_display_info *info, | |
740 | const u32 *formats, | |
741 | unsigned int num_formats) | |
742 | { | |
743 | u32 *fmts = NULL; | |
744 | ||
745 | if (!formats && num_formats) | |
746 | return -EINVAL; | |
747 | ||
748 | if (formats && num_formats) { | |
749 | fmts = kmemdup(formats, sizeof(*formats) * num_formats, | |
750 | GFP_KERNEL); | |
751 | if (!fmts) | |
752 | return -ENOMEM; | |
753 | } | |
754 | ||
755 | kfree(info->bus_formats); | |
756 | info->bus_formats = fmts; | |
757 | info->num_bus_formats = num_formats; | |
758 | ||
759 | return 0; | |
760 | } | |
761 | EXPORT_SYMBOL(drm_display_info_set_bus_formats); | |
762 | ||
52217195 DV |
763 | /* Optional connector properties. */ |
764 | static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] = { | |
765 | { DRM_MODE_SCALE_NONE, "None" }, | |
766 | { DRM_MODE_SCALE_FULLSCREEN, "Full" }, | |
767 | { DRM_MODE_SCALE_CENTER, "Center" }, | |
768 | { DRM_MODE_SCALE_ASPECT, "Full aspect" }, | |
769 | }; | |
770 | ||
771 | static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = { | |
772 | { DRM_MODE_PICTURE_ASPECT_NONE, "Automatic" }, | |
773 | { DRM_MODE_PICTURE_ASPECT_4_3, "4:3" }, | |
774 | { DRM_MODE_PICTURE_ASPECT_16_9, "16:9" }, | |
775 | }; | |
776 | ||
50525c33 SL |
777 | static const struct drm_prop_enum_list drm_content_type_enum_list[] = { |
778 | { DRM_MODE_CONTENT_TYPE_NO_DATA, "No Data" }, | |
779 | { DRM_MODE_CONTENT_TYPE_GRAPHICS, "Graphics" }, | |
780 | { DRM_MODE_CONTENT_TYPE_PHOTO, "Photo" }, | |
781 | { DRM_MODE_CONTENT_TYPE_CINEMA, "Cinema" }, | |
782 | { DRM_MODE_CONTENT_TYPE_GAME, "Game" }, | |
783 | }; | |
784 | ||
8d70f395 HG |
785 | static const struct drm_prop_enum_list drm_panel_orientation_enum_list[] = { |
786 | { DRM_MODE_PANEL_ORIENTATION_NORMAL, "Normal" }, | |
787 | { DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP, "Upside Down" }, | |
788 | { DRM_MODE_PANEL_ORIENTATION_LEFT_UP, "Left Side Up" }, | |
789 | { DRM_MODE_PANEL_ORIENTATION_RIGHT_UP, "Right Side Up" }, | |
790 | }; | |
791 | ||
52217195 DV |
792 | static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = { |
793 | { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ | |
794 | { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ | |
795 | { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ | |
796 | }; | |
797 | DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list) | |
798 | ||
799 | static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = { | |
800 | { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */ | |
801 | { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ | |
802 | { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ | |
803 | }; | |
804 | DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name, | |
805 | drm_dvi_i_subconnector_enum_list) | |
806 | ||
807 | static const struct drm_prop_enum_list drm_tv_select_enum_list[] = { | |
808 | { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ | |
809 | { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ | |
810 | { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ | |
811 | { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ | |
812 | { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ | |
813 | }; | |
814 | DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list) | |
815 | ||
816 | static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = { | |
817 | { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */ | |
818 | { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ | |
819 | { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ | |
820 | { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ | |
821 | { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ | |
822 | }; | |
823 | DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name, | |
824 | drm_tv_subconnector_enum_list) | |
825 | ||
d2c6a405 US |
826 | static const struct drm_prop_enum_list hdmi_colorspaces[] = { |
827 | /* For Default case, driver will set the colorspace */ | |
828 | { DRM_MODE_COLORIMETRY_DEFAULT, "Default" }, | |
829 | /* Standard Definition Colorimetry based on CEA 861 */ | |
830 | { DRM_MODE_COLORIMETRY_SMPTE_170M_YCC, "SMPTE_170M_YCC" }, | |
831 | { DRM_MODE_COLORIMETRY_BT709_YCC, "BT709_YCC" }, | |
832 | /* Standard Definition Colorimetry based on IEC 61966-2-4 */ | |
833 | { DRM_MODE_COLORIMETRY_XVYCC_601, "XVYCC_601" }, | |
834 | /* High Definition Colorimetry based on IEC 61966-2-4 */ | |
835 | { DRM_MODE_COLORIMETRY_XVYCC_709, "XVYCC_709" }, | |
836 | /* Colorimetry based on IEC 61966-2-1/Amendment 1 */ | |
837 | { DRM_MODE_COLORIMETRY_SYCC_601, "SYCC_601" }, | |
838 | /* Colorimetry based on IEC 61966-2-5 [33] */ | |
839 | { DRM_MODE_COLORIMETRY_OPYCC_601, "opYCC_601" }, | |
840 | /* Colorimetry based on IEC 61966-2-5 */ | |
841 | { DRM_MODE_COLORIMETRY_OPRGB, "opRGB" }, | |
842 | /* Colorimetry based on ITU-R BT.2020 */ | |
843 | { DRM_MODE_COLORIMETRY_BT2020_CYCC, "BT2020_CYCC" }, | |
844 | /* Colorimetry based on ITU-R BT.2020 */ | |
845 | { DRM_MODE_COLORIMETRY_BT2020_RGB, "BT2020_RGB" }, | |
846 | /* Colorimetry based on ITU-R BT.2020 */ | |
847 | { DRM_MODE_COLORIMETRY_BT2020_YCC, "BT2020_YCC" }, | |
848 | /* Added as part of Additional Colorimetry Extension in 861.G */ | |
849 | { DRM_MODE_COLORIMETRY_DCI_P3_RGB_D65, "DCI-P3_RGB_D65" }, | |
850 | { DRM_MODE_COLORIMETRY_DCI_P3_RGB_THEATER, "DCI-P3_RGB_Theater" }, | |
851 | }; | |
852 | ||
4ada6f22 DV |
853 | /** |
854 | * DOC: standard connector properties | |
855 | * | |
856 | * DRM connectors have a few standardized properties: | |
857 | * | |
858 | * EDID: | |
859 | * Blob property which contains the current EDID read from the sink. This | |
860 | * is useful to parse sink identification information like vendor, model | |
861 | * and serial. Drivers should update this property by calling | |
c555f023 | 862 | * drm_connector_update_edid_property(), usually after having parsed |
4ada6f22 DV |
863 | * the EDID using drm_add_edid_modes(). Userspace cannot change this |
864 | * property. | |
865 | * DPMS: | |
866 | * Legacy property for setting the power state of the connector. For atomic | |
867 | * drivers this is only provided for backwards compatibility with existing | |
868 | * drivers, it remaps to controlling the "ACTIVE" property on the CRTC the | |
869 | * connector is linked to. Drivers should never set this property directly, | |
d574528a | 870 | * it is handled by the DRM core by calling the &drm_connector_funcs.dpms |
144a7999 DV |
871 | * callback. For atomic drivers the remapping to the "ACTIVE" property is |
872 | * implemented in the DRM core. This is the only standard connector | |
873 | * property that userspace can change. | |
d0d1aee5 DV |
874 | * |
875 | * Note that this property cannot be set through the MODE_ATOMIC ioctl, | |
876 | * userspace must use "ACTIVE" on the CRTC instead. | |
877 | * | |
878 | * WARNING: | |
879 | * | |
880 | * For userspace also running on legacy drivers the "DPMS" semantics are a | |
881 | * lot more complicated. First, userspace cannot rely on the "DPMS" value | |
882 | * returned by the GETCONNECTOR actually reflecting reality, because many | |
883 | * drivers fail to update it. For atomic drivers this is taken care of in | |
884 | * drm_atomic_helper_update_legacy_modeset_state(). | |
885 | * | |
886 | * The second issue is that the DPMS state is only well-defined when the | |
887 | * connector is connected to a CRTC. In atomic the DRM core enforces that | |
888 | * "ACTIVE" is off in such a case, no such checks exists for "DPMS". | |
889 | * | |
890 | * Finally, when enabling an output using the legacy SETCONFIG ioctl then | |
891 | * "DPMS" is forced to ON. But see above, that might not be reflected in | |
892 | * the software value on legacy drivers. | |
893 | * | |
894 | * Summarizing: Only set "DPMS" when the connector is known to be enabled, | |
895 | * assume that a successful SETCONFIG call also sets "DPMS" to on, and | |
896 | * never read back the value of "DPMS" because it can be incorrect. | |
4ada6f22 DV |
897 | * PATH: |
898 | * Connector path property to identify how this sink is physically | |
899 | * connected. Used by DP MST. This should be set by calling | |
97e14fbe | 900 | * drm_connector_set_path_property(), in the case of DP MST with the |
4ada6f22 DV |
901 | * path property the MST manager created. Userspace cannot change this |
902 | * property. | |
903 | * TILE: | |
904 | * Connector tile group property to indicate how a set of DRM connector | |
905 | * compose together into one logical screen. This is used by both high-res | |
906 | * external screens (often only using a single cable, but exposing multiple | |
907 | * DP MST sinks), or high-res integrated panels (like dual-link DSI) which | |
908 | * are not gen-locked. Note that for tiled panels which are genlocked, like | |
909 | * dual-link LVDS or dual-link DSI, the driver should try to not expose the | |
910 | * tiling and virtualize both &drm_crtc and &drm_plane if needed. Drivers | |
97e14fbe | 911 | * should update this value using drm_connector_set_tile_property(). |
4ada6f22 | 912 | * Userspace cannot change this property. |
40ee6fbe | 913 | * link-status: |
716719a3 SP |
914 | * Connector link-status property to indicate the status of link. The |
915 | * default value of link-status is "GOOD". If something fails during or | |
916 | * after modeset, the kernel driver may set this to "BAD" and issue a | |
917 | * hotplug uevent. Drivers should update this value using | |
97e14fbe | 918 | * drm_connector_set_link_status_property(). |
66660d4c DA |
919 | * non_desktop: |
920 | * Indicates the output should be ignored for purposes of displaying a | |
921 | * standard desktop environment or console. This is most likely because | |
922 | * the output device is not rectilinear. | |
24557865 SP |
923 | * Content Protection: |
924 | * This property is used by userspace to request the kernel protect future | |
925 | * content communicated over the link. When requested, kernel will apply | |
926 | * the appropriate means of protection (most often HDCP), and use the | |
927 | * property to tell userspace the protection is active. | |
928 | * | |
929 | * Drivers can set this up by calling | |
930 | * drm_connector_attach_content_protection_property() on initialization. | |
931 | * | |
932 | * The value of this property can be one of the following: | |
933 | * | |
bbeba09f | 934 | * DRM_MODE_CONTENT_PROTECTION_UNDESIRED = 0 |
24557865 | 935 | * The link is not protected, content is transmitted in the clear. |
bbeba09f | 936 | * DRM_MODE_CONTENT_PROTECTION_DESIRED = 1 |
24557865 SP |
937 | * Userspace has requested content protection, but the link is not |
938 | * currently protected. When in this state, kernel should enable | |
939 | * Content Protection as soon as possible. | |
bbeba09f | 940 | * DRM_MODE_CONTENT_PROTECTION_ENABLED = 2 |
24557865 SP |
941 | * Userspace has requested content protection, and the link is |
942 | * protected. Only the driver can set the property to this value. | |
943 | * If userspace attempts to set to ENABLED, kernel will return | |
944 | * -EINVAL. | |
945 | * | |
946 | * A few guidelines: | |
947 | * | |
948 | * - DESIRED state should be preserved until userspace de-asserts it by | |
949 | * setting the property to UNDESIRED. This means ENABLED should only | |
950 | * transition to UNDESIRED when the user explicitly requests it. | |
951 | * - If the state is DESIRED, kernel should attempt to re-authenticate the | |
952 | * link whenever possible. This includes across disable/enable, dpms, | |
953 | * hotplug, downstream device changes, link status failures, etc.. | |
954 | * - Userspace is responsible for polling the property to determine when | |
955 | * the value transitions from ENABLED to DESIRED. This signifies the link | |
956 | * is no longer protected and userspace should take appropriate action | |
957 | * (whatever that might be). | |
4ada6f22 | 958 | * |
a09db883 US |
959 | * HDR_OUTPUT_METADATA: |
960 | * Connector property to enable userspace to send HDR Metadata to | |
961 | * driver. This metadata is based on the composition and blending | |
962 | * policies decided by user, taking into account the hardware and | |
963 | * sink capabilities. The driver gets this metadata and creates a | |
964 | * Dynamic Range and Mastering Infoframe (DRM) in case of HDMI, | |
965 | * SDP packet (Non-audio INFOFRAME SDP v1.3) for DP. This is then | |
966 | * sent to sink. This notifies the sink of the upcoming frame's Color | |
967 | * Encoding and Luminance parameters. | |
968 | * | |
969 | * Userspace first need to detect the HDR capabilities of sink by | |
970 | * reading and parsing the EDID. Details of HDR metadata for HDMI | |
971 | * are added in CTA 861.G spec. For DP , its defined in VESA DP | |
972 | * Standard v1.4. It needs to then get the metadata information | |
973 | * of the video/game/app content which are encoded in HDR (basically | |
974 | * using HDR transfer functions). With this information it needs to | |
975 | * decide on a blending policy and compose the relevant | |
976 | * layers/overlays into a common format. Once this blending is done, | |
977 | * userspace will be aware of the metadata of the composed frame to | |
978 | * be send to sink. It then uses this property to communicate this | |
979 | * metadata to driver which then make a Infoframe packet and sends | |
980 | * to sink based on the type of encoder connected. | |
981 | * | |
982 | * Userspace will be responsible to do Tone mapping operation in case: | |
983 | * - Some layers are HDR and others are SDR | |
984 | * - HDR layers luminance is not same as sink | |
985 | * It will even need to do colorspace conversion and get all layers | |
986 | * to one common colorspace for blending. It can use either GL, Media | |
987 | * or display engine to get this done based on the capabilties of the | |
988 | * associated hardware. | |
989 | * | |
990 | * Driver expects metadata to be put in &struct hdr_output_metadata | |
991 | * structure from userspace. This is received as blob and stored in | |
992 | * &drm_connector_state.hdr_output_metadata. It parses EDID and saves the | |
993 | * sink metadata in &struct hdr_sink_metadata, as | |
994 | * &drm_connector.hdr_sink_metadata. Driver uses | |
995 | * drm_hdmi_infoframe_set_hdr_metadata() helper to set the HDR metadata, | |
996 | * hdmi_drm_infoframe_pack() to pack the infoframe as per spec, in case of | |
997 | * HDMI encoder. | |
998 | * | |
47e22ff1 RS |
999 | * max bpc: |
1000 | * This range property is used by userspace to limit the bit depth. When | |
1001 | * used the driver would limit the bpc in accordance with the valid range | |
1002 | * supported by the hardware and sink. Drivers to use the function | |
1003 | * drm_connector_attach_max_bpc_property() to create and attach the | |
1004 | * property to the connector during initialization. | |
1005 | * | |
4ada6f22 DV |
1006 | * Connectors also have one standardized atomic property: |
1007 | * | |
1008 | * CRTC_ID: | |
1009 | * Mode object ID of the &drm_crtc this connector should be connected to. | |
8d70f395 HG |
1010 | * |
1011 | * Connectors for LCD panels may also have one standardized property: | |
1012 | * | |
1013 | * panel orientation: | |
1014 | * On some devices the LCD panel is mounted in the casing in such a way | |
1015 | * that the up/top side of the panel does not match with the top side of | |
1016 | * the device. Userspace can use this property to check for this. | |
1017 | * Note that input coordinates from touchscreens (input devices with | |
1018 | * INPUT_PROP_DIRECT) will still map 1:1 to the actual LCD panel | |
1019 | * coordinates, so if userspace rotates the picture to adjust for | |
1020 | * the orientation it must also apply the same transformation to the | |
bbeba09f DV |
1021 | * touchscreen input coordinates. This property is initialized by calling |
1022 | * drm_connector_init_panel_orientation_property(). | |
1023 | * | |
1024 | * scaling mode: | |
1025 | * This property defines how a non-native mode is upscaled to the native | |
1026 | * mode of an LCD panel: | |
1027 | * | |
1028 | * None: | |
1029 | * No upscaling happens, scaling is left to the panel. Not all | |
1030 | * drivers expose this mode. | |
1031 | * Full: | |
1032 | * The output is upscaled to the full resolution of the panel, | |
1033 | * ignoring the aspect ratio. | |
1034 | * Center: | |
1035 | * No upscaling happens, the output is centered within the native | |
1036 | * resolution the panel. | |
1037 | * Full aspect: | |
1038 | * The output is upscaled to maximize either the width or height | |
1039 | * while retaining the aspect ratio. | |
1040 | * | |
1041 | * This property should be set up by calling | |
1042 | * drm_connector_attach_scaling_mode_property(). Note that drivers | |
1043 | * can also expose this property to external outputs, in which case they | |
1044 | * must support "None", which should be the default (since external screens | |
1045 | * have a built-in scaler). | |
4ada6f22 DV |
1046 | */ |
1047 | ||
52217195 DV |
1048 | int drm_connector_create_standard_properties(struct drm_device *dev) |
1049 | { | |
1050 | struct drm_property *prop; | |
1051 | ||
1052 | prop = drm_property_create(dev, DRM_MODE_PROP_BLOB | | |
1053 | DRM_MODE_PROP_IMMUTABLE, | |
1054 | "EDID", 0); | |
1055 | if (!prop) | |
1056 | return -ENOMEM; | |
1057 | dev->mode_config.edid_property = prop; | |
1058 | ||
1059 | prop = drm_property_create_enum(dev, 0, | |
1060 | "DPMS", drm_dpms_enum_list, | |
1061 | ARRAY_SIZE(drm_dpms_enum_list)); | |
1062 | if (!prop) | |
1063 | return -ENOMEM; | |
1064 | dev->mode_config.dpms_property = prop; | |
1065 | ||
1066 | prop = drm_property_create(dev, | |
1067 | DRM_MODE_PROP_BLOB | | |
1068 | DRM_MODE_PROP_IMMUTABLE, | |
1069 | "PATH", 0); | |
1070 | if (!prop) | |
1071 | return -ENOMEM; | |
1072 | dev->mode_config.path_property = prop; | |
1073 | ||
1074 | prop = drm_property_create(dev, | |
1075 | DRM_MODE_PROP_BLOB | | |
1076 | DRM_MODE_PROP_IMMUTABLE, | |
1077 | "TILE", 0); | |
1078 | if (!prop) | |
1079 | return -ENOMEM; | |
1080 | dev->mode_config.tile_property = prop; | |
1081 | ||
40ee6fbe MN |
1082 | prop = drm_property_create_enum(dev, 0, "link-status", |
1083 | drm_link_status_enum_list, | |
1084 | ARRAY_SIZE(drm_link_status_enum_list)); | |
1085 | if (!prop) | |
1086 | return -ENOMEM; | |
1087 | dev->mode_config.link_status_property = prop; | |
1088 | ||
66660d4c DA |
1089 | prop = drm_property_create_bool(dev, DRM_MODE_PROP_IMMUTABLE, "non-desktop"); |
1090 | if (!prop) | |
1091 | return -ENOMEM; | |
1092 | dev->mode_config.non_desktop_property = prop; | |
1093 | ||
fbb5d035 US |
1094 | prop = drm_property_create(dev, DRM_MODE_PROP_BLOB, |
1095 | "HDR_OUTPUT_METADATA", 0); | |
1096 | if (!prop) | |
1097 | return -ENOMEM; | |
1098 | dev->mode_config.hdr_output_metadata_property = prop; | |
1099 | ||
52217195 DV |
1100 | return 0; |
1101 | } | |
1102 | ||
1103 | /** | |
1104 | * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties | |
1105 | * @dev: DRM device | |
1106 | * | |
1107 | * Called by a driver the first time a DVI-I connector is made. | |
1108 | */ | |
1109 | int drm_mode_create_dvi_i_properties(struct drm_device *dev) | |
1110 | { | |
1111 | struct drm_property *dvi_i_selector; | |
1112 | struct drm_property *dvi_i_subconnector; | |
1113 | ||
1114 | if (dev->mode_config.dvi_i_select_subconnector_property) | |
1115 | return 0; | |
1116 | ||
1117 | dvi_i_selector = | |
1118 | drm_property_create_enum(dev, 0, | |
1119 | "select subconnector", | |
1120 | drm_dvi_i_select_enum_list, | |
1121 | ARRAY_SIZE(drm_dvi_i_select_enum_list)); | |
1122 | dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector; | |
1123 | ||
1124 | dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, | |
1125 | "subconnector", | |
1126 | drm_dvi_i_subconnector_enum_list, | |
1127 | ARRAY_SIZE(drm_dvi_i_subconnector_enum_list)); | |
1128 | dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector; | |
1129 | ||
1130 | return 0; | |
1131 | } | |
1132 | EXPORT_SYMBOL(drm_mode_create_dvi_i_properties); | |
1133 | ||
50525c33 SL |
1134 | /** |
1135 | * DOC: HDMI connector properties | |
1136 | * | |
1137 | * content type (HDMI specific): | |
1138 | * Indicates content type setting to be used in HDMI infoframes to indicate | |
1e55a53a | 1139 | * content type for the external device, so that it adjusts its display |
50525c33 SL |
1140 | * settings accordingly. |
1141 | * | |
1142 | * The value of this property can be one of the following: | |
1143 | * | |
1144 | * No Data: | |
1145 | * Content type is unknown | |
1146 | * Graphics: | |
1147 | * Content type is graphics | |
1148 | * Photo: | |
1149 | * Content type is photo | |
1150 | * Cinema: | |
1151 | * Content type is cinema | |
1152 | * Game: | |
1153 | * Content type is game | |
1154 | * | |
1155 | * Drivers can set up this property by calling | |
1156 | * drm_connector_attach_content_type_property(). Decoding to | |
ba609631 | 1157 | * infoframe values is done through drm_hdmi_avi_infoframe_content_type(). |
50525c33 SL |
1158 | */ |
1159 | ||
1160 | /** | |
1161 | * drm_connector_attach_content_type_property - attach content-type property | |
1162 | * @connector: connector to attach content type property on. | |
1163 | * | |
1164 | * Called by a driver the first time a HDMI connector is made. | |
1165 | */ | |
1166 | int drm_connector_attach_content_type_property(struct drm_connector *connector) | |
1167 | { | |
1168 | if (!drm_mode_create_content_type_property(connector->dev)) | |
1169 | drm_object_attach_property(&connector->base, | |
1170 | connector->dev->mode_config.content_type_property, | |
1171 | DRM_MODE_CONTENT_TYPE_NO_DATA); | |
1172 | return 0; | |
1173 | } | |
1174 | EXPORT_SYMBOL(drm_connector_attach_content_type_property); | |
1175 | ||
1176 | ||
1177 | /** | |
1178 | * drm_hdmi_avi_infoframe_content_type() - fill the HDMI AVI infoframe | |
1179 | * content type information, based | |
1180 | * on correspondent DRM property. | |
1181 | * @frame: HDMI AVI infoframe | |
1182 | * @conn_state: DRM display connector state | |
1183 | * | |
1184 | */ | |
1185 | void drm_hdmi_avi_infoframe_content_type(struct hdmi_avi_infoframe *frame, | |
1186 | const struct drm_connector_state *conn_state) | |
1187 | { | |
1188 | switch (conn_state->content_type) { | |
1189 | case DRM_MODE_CONTENT_TYPE_GRAPHICS: | |
1190 | frame->content_type = HDMI_CONTENT_TYPE_GRAPHICS; | |
1191 | break; | |
1192 | case DRM_MODE_CONTENT_TYPE_CINEMA: | |
1193 | frame->content_type = HDMI_CONTENT_TYPE_CINEMA; | |
1194 | break; | |
1195 | case DRM_MODE_CONTENT_TYPE_GAME: | |
1196 | frame->content_type = HDMI_CONTENT_TYPE_GAME; | |
1197 | break; | |
1198 | case DRM_MODE_CONTENT_TYPE_PHOTO: | |
1199 | frame->content_type = HDMI_CONTENT_TYPE_PHOTO; | |
1200 | break; | |
1201 | default: | |
1202 | /* Graphics is the default(0) */ | |
1203 | frame->content_type = HDMI_CONTENT_TYPE_GRAPHICS; | |
1204 | } | |
1205 | ||
1206 | frame->itc = conn_state->content_type != DRM_MODE_CONTENT_TYPE_NO_DATA; | |
1207 | } | |
1208 | EXPORT_SYMBOL(drm_hdmi_avi_infoframe_content_type); | |
1209 | ||
52217195 | 1210 | /** |
6c4f52dc BB |
1211 | * drm_mode_attach_tv_margin_properties - attach TV connector margin properties |
1212 | * @connector: DRM connector | |
1213 | * | |
1214 | * Called by a driver when it needs to attach TV margin props to a connector. | |
1215 | * Typically used on SDTV and HDMI connectors. | |
1216 | */ | |
1217 | void drm_connector_attach_tv_margin_properties(struct drm_connector *connector) | |
1218 | { | |
1219 | struct drm_device *dev = connector->dev; | |
1220 | ||
1221 | drm_object_attach_property(&connector->base, | |
1222 | dev->mode_config.tv_left_margin_property, | |
1223 | 0); | |
1224 | drm_object_attach_property(&connector->base, | |
1225 | dev->mode_config.tv_right_margin_property, | |
1226 | 0); | |
1227 | drm_object_attach_property(&connector->base, | |
1228 | dev->mode_config.tv_top_margin_property, | |
1229 | 0); | |
1230 | drm_object_attach_property(&connector->base, | |
1231 | dev->mode_config.tv_bottom_margin_property, | |
1232 | 0); | |
1233 | } | |
1234 | EXPORT_SYMBOL(drm_connector_attach_tv_margin_properties); | |
1235 | ||
1236 | /** | |
1237 | * drm_mode_create_tv_margin_properties - create TV connector margin properties | |
1238 | * @dev: DRM device | |
1239 | * | |
1240 | * Called by a driver's HDMI connector initialization routine, this function | |
1241 | * creates the TV margin properties for a given device. No need to call this | |
1242 | * function for an SDTV connector, it's already called from | |
1243 | * drm_mode_create_tv_properties(). | |
1244 | */ | |
1245 | int drm_mode_create_tv_margin_properties(struct drm_device *dev) | |
1246 | { | |
1247 | if (dev->mode_config.tv_left_margin_property) | |
1248 | return 0; | |
1249 | ||
1250 | dev->mode_config.tv_left_margin_property = | |
1251 | drm_property_create_range(dev, 0, "left margin", 0, 100); | |
1252 | if (!dev->mode_config.tv_left_margin_property) | |
1253 | return -ENOMEM; | |
1254 | ||
1255 | dev->mode_config.tv_right_margin_property = | |
1256 | drm_property_create_range(dev, 0, "right margin", 0, 100); | |
1257 | if (!dev->mode_config.tv_right_margin_property) | |
1258 | return -ENOMEM; | |
1259 | ||
1260 | dev->mode_config.tv_top_margin_property = | |
1261 | drm_property_create_range(dev, 0, "top margin", 0, 100); | |
1262 | if (!dev->mode_config.tv_top_margin_property) | |
1263 | return -ENOMEM; | |
1264 | ||
1265 | dev->mode_config.tv_bottom_margin_property = | |
1266 | drm_property_create_range(dev, 0, "bottom margin", 0, 100); | |
1267 | if (!dev->mode_config.tv_bottom_margin_property) | |
1268 | return -ENOMEM; | |
1269 | ||
1270 | return 0; | |
1271 | } | |
1272 | EXPORT_SYMBOL(drm_mode_create_tv_margin_properties); | |
1273 | ||
52217195 | 1274 | /** |
eda6887f | 1275 | * drm_mode_create_tv_properties - create TV specific connector properties |
52217195 DV |
1276 | * @dev: DRM device |
1277 | * @num_modes: number of different TV formats (modes) supported | |
1278 | * @modes: array of pointers to strings containing name of each format | |
1279 | * | |
1280 | * Called by a driver's TV initialization routine, this function creates | |
1281 | * the TV specific connector properties for a given device. Caller is | |
1282 | * responsible for allocating a list of format names and passing them to | |
1283 | * this routine. | |
1284 | */ | |
1285 | int drm_mode_create_tv_properties(struct drm_device *dev, | |
1286 | unsigned int num_modes, | |
1287 | const char * const modes[]) | |
1288 | { | |
1289 | struct drm_property *tv_selector; | |
1290 | struct drm_property *tv_subconnector; | |
1291 | unsigned int i; | |
1292 | ||
1293 | if (dev->mode_config.tv_select_subconnector_property) | |
1294 | return 0; | |
1295 | ||
1296 | /* | |
1297 | * Basic connector properties | |
1298 | */ | |
1299 | tv_selector = drm_property_create_enum(dev, 0, | |
1300 | "select subconnector", | |
1301 | drm_tv_select_enum_list, | |
1302 | ARRAY_SIZE(drm_tv_select_enum_list)); | |
1303 | if (!tv_selector) | |
1304 | goto nomem; | |
1305 | ||
1306 | dev->mode_config.tv_select_subconnector_property = tv_selector; | |
1307 | ||
1308 | tv_subconnector = | |
1309 | drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, | |
1310 | "subconnector", | |
1311 | drm_tv_subconnector_enum_list, | |
1312 | ARRAY_SIZE(drm_tv_subconnector_enum_list)); | |
1313 | if (!tv_subconnector) | |
1314 | goto nomem; | |
1315 | dev->mode_config.tv_subconnector_property = tv_subconnector; | |
1316 | ||
1317 | /* | |
1318 | * Other, TV specific properties: margins & TV modes. | |
1319 | */ | |
6c4f52dc | 1320 | if (drm_mode_create_tv_margin_properties(dev)) |
52217195 DV |
1321 | goto nomem; |
1322 | ||
1323 | dev->mode_config.tv_mode_property = | |
1324 | drm_property_create(dev, DRM_MODE_PROP_ENUM, | |
1325 | "mode", num_modes); | |
1326 | if (!dev->mode_config.tv_mode_property) | |
1327 | goto nomem; | |
1328 | ||
1329 | for (i = 0; i < num_modes; i++) | |
30e9db6d | 1330 | drm_property_add_enum(dev->mode_config.tv_mode_property, |
52217195 DV |
1331 | i, modes[i]); |
1332 | ||
1333 | dev->mode_config.tv_brightness_property = | |
1334 | drm_property_create_range(dev, 0, "brightness", 0, 100); | |
1335 | if (!dev->mode_config.tv_brightness_property) | |
1336 | goto nomem; | |
1337 | ||
1338 | dev->mode_config.tv_contrast_property = | |
1339 | drm_property_create_range(dev, 0, "contrast", 0, 100); | |
1340 | if (!dev->mode_config.tv_contrast_property) | |
1341 | goto nomem; | |
1342 | ||
1343 | dev->mode_config.tv_flicker_reduction_property = | |
1344 | drm_property_create_range(dev, 0, "flicker reduction", 0, 100); | |
1345 | if (!dev->mode_config.tv_flicker_reduction_property) | |
1346 | goto nomem; | |
1347 | ||
1348 | dev->mode_config.tv_overscan_property = | |
1349 | drm_property_create_range(dev, 0, "overscan", 0, 100); | |
1350 | if (!dev->mode_config.tv_overscan_property) | |
1351 | goto nomem; | |
1352 | ||
1353 | dev->mode_config.tv_saturation_property = | |
1354 | drm_property_create_range(dev, 0, "saturation", 0, 100); | |
1355 | if (!dev->mode_config.tv_saturation_property) | |
1356 | goto nomem; | |
1357 | ||
1358 | dev->mode_config.tv_hue_property = | |
1359 | drm_property_create_range(dev, 0, "hue", 0, 100); | |
1360 | if (!dev->mode_config.tv_hue_property) | |
1361 | goto nomem; | |
1362 | ||
1363 | return 0; | |
1364 | nomem: | |
1365 | return -ENOMEM; | |
1366 | } | |
1367 | EXPORT_SYMBOL(drm_mode_create_tv_properties); | |
1368 | ||
1369 | /** | |
1370 | * drm_mode_create_scaling_mode_property - create scaling mode property | |
1371 | * @dev: DRM device | |
1372 | * | |
1373 | * Called by a driver the first time it's needed, must be attached to desired | |
1374 | * connectors. | |
8f6e1e22 ML |
1375 | * |
1376 | * Atomic drivers should use drm_connector_attach_scaling_mode_property() | |
1377 | * instead to correctly assign &drm_connector_state.picture_aspect_ratio | |
1378 | * in the atomic state. | |
52217195 DV |
1379 | */ |
1380 | int drm_mode_create_scaling_mode_property(struct drm_device *dev) | |
1381 | { | |
1382 | struct drm_property *scaling_mode; | |
1383 | ||
1384 | if (dev->mode_config.scaling_mode_property) | |
1385 | return 0; | |
1386 | ||
1387 | scaling_mode = | |
1388 | drm_property_create_enum(dev, 0, "scaling mode", | |
1389 | drm_scaling_mode_enum_list, | |
1390 | ARRAY_SIZE(drm_scaling_mode_enum_list)); | |
1391 | ||
1392 | dev->mode_config.scaling_mode_property = scaling_mode; | |
1393 | ||
1394 | return 0; | |
1395 | } | |
1396 | EXPORT_SYMBOL(drm_mode_create_scaling_mode_property); | |
1397 | ||
ab7a664f NK |
1398 | /** |
1399 | * DOC: Variable refresh properties | |
1400 | * | |
1401 | * Variable refresh rate capable displays can dynamically adjust their | |
1402 | * refresh rate by extending the duration of their vertical front porch | |
1403 | * until page flip or timeout occurs. This can reduce or remove stuttering | |
1404 | * and latency in scenarios where the page flip does not align with the | |
1405 | * vblank interval. | |
1406 | * | |
1407 | * An example scenario would be an application flipping at a constant rate | |
1408 | * of 48Hz on a 60Hz display. The page flip will frequently miss the vblank | |
1409 | * interval and the same contents will be displayed twice. This can be | |
1410 | * observed as stuttering for content with motion. | |
1411 | * | |
1412 | * If variable refresh rate was active on a display that supported a | |
1413 | * variable refresh range from 35Hz to 60Hz no stuttering would be observable | |
1414 | * for the example scenario. The minimum supported variable refresh rate of | |
1415 | * 35Hz is below the page flip frequency and the vertical front porch can | |
1416 | * be extended until the page flip occurs. The vblank interval will be | |
1417 | * directly aligned to the page flip rate. | |
1418 | * | |
1419 | * Not all userspace content is suitable for use with variable refresh rate. | |
1420 | * Large and frequent changes in vertical front porch duration may worsen | |
1421 | * perceived stuttering for input sensitive applications. | |
1422 | * | |
1423 | * Panel brightness will also vary with vertical front porch duration. Some | |
1424 | * panels may have noticeable differences in brightness between the minimum | |
1425 | * vertical front porch duration and the maximum vertical front porch duration. | |
1426 | * Large and frequent changes in vertical front porch duration may produce | |
1427 | * observable flickering for such panels. | |
1428 | * | |
1429 | * Userspace control for variable refresh rate is supported via properties | |
1430 | * on the &drm_connector and &drm_crtc objects. | |
1431 | * | |
1432 | * "vrr_capable": | |
1433 | * Optional &drm_connector boolean property that drivers should attach | |
1434 | * with drm_connector_attach_vrr_capable_property() on connectors that | |
1435 | * could support variable refresh rates. Drivers should update the | |
1436 | * property value by calling drm_connector_set_vrr_capable_property(). | |
1437 | * | |
1438 | * Absence of the property should indicate absence of support. | |
1439 | * | |
77086014 | 1440 | * "VRR_ENABLED": |
ab7a664f NK |
1441 | * Default &drm_crtc boolean property that notifies the driver that the |
1442 | * content on the CRTC is suitable for variable refresh rate presentation. | |
1443 | * The driver will take this property as a hint to enable variable | |
1444 | * refresh rate support if the receiver supports it, ie. if the | |
1445 | * "vrr_capable" property is true on the &drm_connector object. The | |
1446 | * vertical front porch duration will be extended until page-flip or | |
1447 | * timeout when enabled. | |
1448 | * | |
1449 | * The minimum vertical front porch duration is defined as the vertical | |
1450 | * front porch duration for the current mode. | |
1451 | * | |
1452 | * The maximum vertical front porch duration is greater than or equal to | |
1453 | * the minimum vertical front porch duration. The duration is derived | |
1454 | * from the minimum supported variable refresh rate for the connector. | |
1455 | * | |
1456 | * The driver may place further restrictions within these minimum | |
1457 | * and maximum bounds. | |
ab7a664f NK |
1458 | */ |
1459 | ||
ba1b0f6c NK |
1460 | /** |
1461 | * drm_connector_attach_vrr_capable_property - creates the | |
1462 | * vrr_capable property | |
1463 | * @connector: connector to create the vrr_capable property on. | |
1464 | * | |
1465 | * This is used by atomic drivers to add support for querying | |
1466 | * variable refresh rate capability for a connector. | |
1467 | * | |
1468 | * Returns: | |
1469 | * Zero on success, negative errono on failure. | |
1470 | */ | |
1471 | int drm_connector_attach_vrr_capable_property( | |
1472 | struct drm_connector *connector) | |
1473 | { | |
1474 | struct drm_device *dev = connector->dev; | |
1475 | struct drm_property *prop; | |
1476 | ||
1477 | if (!connector->vrr_capable_property) { | |
1478 | prop = drm_property_create_bool(dev, DRM_MODE_PROP_IMMUTABLE, | |
1479 | "vrr_capable"); | |
1480 | if (!prop) | |
1481 | return -ENOMEM; | |
1482 | ||
1483 | connector->vrr_capable_property = prop; | |
1484 | drm_object_attach_property(&connector->base, prop, 0); | |
1485 | } | |
1486 | ||
1487 | return 0; | |
1488 | } | |
1489 | EXPORT_SYMBOL(drm_connector_attach_vrr_capable_property); | |
1490 | ||
8f6e1e22 ML |
1491 | /** |
1492 | * drm_connector_attach_scaling_mode_property - attach atomic scaling mode property | |
1493 | * @connector: connector to attach scaling mode property on. | |
1494 | * @scaling_mode_mask: or'ed mask of BIT(%DRM_MODE_SCALE_\*). | |
1495 | * | |
1496 | * This is used to add support for scaling mode to atomic drivers. | |
1497 | * The scaling mode will be set to &drm_connector_state.picture_aspect_ratio | |
1498 | * and can be used from &drm_connector_helper_funcs->atomic_check for validation. | |
1499 | * | |
1500 | * This is the atomic version of drm_mode_create_scaling_mode_property(). | |
1501 | * | |
1502 | * Returns: | |
1503 | * Zero on success, negative errno on failure. | |
1504 | */ | |
1505 | int drm_connector_attach_scaling_mode_property(struct drm_connector *connector, | |
1506 | u32 scaling_mode_mask) | |
1507 | { | |
1508 | struct drm_device *dev = connector->dev; | |
1509 | struct drm_property *scaling_mode_property; | |
30e9db6d | 1510 | int i; |
8f6e1e22 ML |
1511 | const unsigned valid_scaling_mode_mask = |
1512 | (1U << ARRAY_SIZE(drm_scaling_mode_enum_list)) - 1; | |
1513 | ||
1514 | if (WARN_ON(hweight32(scaling_mode_mask) < 2 || | |
1515 | scaling_mode_mask & ~valid_scaling_mode_mask)) | |
1516 | return -EINVAL; | |
1517 | ||
1518 | scaling_mode_property = | |
1519 | drm_property_create(dev, DRM_MODE_PROP_ENUM, "scaling mode", | |
1520 | hweight32(scaling_mode_mask)); | |
1521 | ||
1522 | if (!scaling_mode_property) | |
1523 | return -ENOMEM; | |
1524 | ||
1525 | for (i = 0; i < ARRAY_SIZE(drm_scaling_mode_enum_list); i++) { | |
1526 | int ret; | |
1527 | ||
1528 | if (!(BIT(i) & scaling_mode_mask)) | |
1529 | continue; | |
1530 | ||
30e9db6d | 1531 | ret = drm_property_add_enum(scaling_mode_property, |
8f6e1e22 ML |
1532 | drm_scaling_mode_enum_list[i].type, |
1533 | drm_scaling_mode_enum_list[i].name); | |
1534 | ||
1535 | if (ret) { | |
1536 | drm_property_destroy(dev, scaling_mode_property); | |
1537 | ||
1538 | return ret; | |
1539 | } | |
1540 | } | |
1541 | ||
1542 | drm_object_attach_property(&connector->base, | |
1543 | scaling_mode_property, 0); | |
1544 | ||
1545 | connector->scaling_mode_property = scaling_mode_property; | |
1546 | ||
1547 | return 0; | |
1548 | } | |
1549 | EXPORT_SYMBOL(drm_connector_attach_scaling_mode_property); | |
1550 | ||
52217195 DV |
1551 | /** |
1552 | * drm_mode_create_aspect_ratio_property - create aspect ratio property | |
1553 | * @dev: DRM device | |
1554 | * | |
1555 | * Called by a driver the first time it's needed, must be attached to desired | |
1556 | * connectors. | |
1557 | * | |
1558 | * Returns: | |
1559 | * Zero on success, negative errno on failure. | |
1560 | */ | |
1561 | int drm_mode_create_aspect_ratio_property(struct drm_device *dev) | |
1562 | { | |
1563 | if (dev->mode_config.aspect_ratio_property) | |
1564 | return 0; | |
1565 | ||
1566 | dev->mode_config.aspect_ratio_property = | |
1567 | drm_property_create_enum(dev, 0, "aspect ratio", | |
1568 | drm_aspect_ratio_enum_list, | |
1569 | ARRAY_SIZE(drm_aspect_ratio_enum_list)); | |
1570 | ||
1571 | if (dev->mode_config.aspect_ratio_property == NULL) | |
1572 | return -ENOMEM; | |
1573 | ||
1574 | return 0; | |
1575 | } | |
1576 | EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property); | |
1577 | ||
d2c6a405 US |
1578 | /** |
1579 | * DOC: standard connector properties | |
1580 | * | |
1581 | * Colorspace: | |
1582 | * drm_mode_create_colorspace_property - create colorspace property | |
1583 | * This property helps select a suitable colorspace based on the sink | |
1584 | * capability. Modern sink devices support wider gamut like BT2020. | |
1585 | * This helps switch to BT2020 mode if the BT2020 encoded video stream | |
1586 | * is being played by the user, same for any other colorspace. Thereby | |
1587 | * giving a good visual experience to users. | |
1588 | * | |
1589 | * The expectation from userspace is that it should parse the EDID | |
1590 | * and get supported colorspaces. Use this property and switch to the | |
1591 | * one supported. Sink supported colorspaces should be retrieved by | |
1592 | * userspace from EDID and driver will not explicitly expose them. | |
1593 | * | |
1594 | * Basically the expectation from userspace is: | |
1595 | * - Set up CRTC DEGAMMA/CTM/GAMMA to convert to some sink | |
1596 | * colorspace | |
1597 | * - Set this new property to let the sink know what it | |
1598 | * converted the CRTC output to. | |
1599 | * - This property is just to inform sink what colorspace | |
1600 | * source is trying to drive. | |
1601 | * | |
1602 | * Called by a driver the first time it's needed, must be attached to desired | |
1603 | * connectors. | |
1604 | */ | |
1605 | int drm_mode_create_colorspace_property(struct drm_connector *connector) | |
1606 | { | |
1607 | struct drm_device *dev = connector->dev; | |
1608 | struct drm_property *prop; | |
1609 | ||
1610 | if (connector->connector_type == DRM_MODE_CONNECTOR_HDMIA || | |
1611 | connector->connector_type == DRM_MODE_CONNECTOR_HDMIB) { | |
1612 | prop = drm_property_create_enum(dev, DRM_MODE_PROP_ENUM, | |
1613 | "Colorspace", | |
1614 | hdmi_colorspaces, | |
1615 | ARRAY_SIZE(hdmi_colorspaces)); | |
1616 | if (!prop) | |
1617 | return -ENOMEM; | |
1618 | } else { | |
1619 | DRM_DEBUG_KMS("Colorspace property not supported\n"); | |
1620 | return 0; | |
1621 | } | |
1622 | ||
1623 | connector->colorspace_property = prop; | |
1624 | ||
1625 | return 0; | |
1626 | } | |
1627 | EXPORT_SYMBOL(drm_mode_create_colorspace_property); | |
1628 | ||
50525c33 SL |
1629 | /** |
1630 | * drm_mode_create_content_type_property - create content type property | |
1631 | * @dev: DRM device | |
1632 | * | |
1633 | * Called by a driver the first time it's needed, must be attached to desired | |
1634 | * connectors. | |
1635 | * | |
1636 | * Returns: | |
1637 | * Zero on success, negative errno on failure. | |
1638 | */ | |
1639 | int drm_mode_create_content_type_property(struct drm_device *dev) | |
1640 | { | |
1641 | if (dev->mode_config.content_type_property) | |
1642 | return 0; | |
1643 | ||
1644 | dev->mode_config.content_type_property = | |
1645 | drm_property_create_enum(dev, 0, "content type", | |
1646 | drm_content_type_enum_list, | |
1647 | ARRAY_SIZE(drm_content_type_enum_list)); | |
1648 | ||
1649 | if (dev->mode_config.content_type_property == NULL) | |
1650 | return -ENOMEM; | |
1651 | ||
1652 | return 0; | |
1653 | } | |
1654 | EXPORT_SYMBOL(drm_mode_create_content_type_property); | |
1655 | ||
52217195 DV |
1656 | /** |
1657 | * drm_mode_create_suggested_offset_properties - create suggests offset properties | |
1658 | * @dev: DRM device | |
1659 | * | |
1660 | * Create the the suggested x/y offset property for connectors. | |
1661 | */ | |
1662 | int drm_mode_create_suggested_offset_properties(struct drm_device *dev) | |
1663 | { | |
1664 | if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property) | |
1665 | return 0; | |
1666 | ||
1667 | dev->mode_config.suggested_x_property = | |
1668 | drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff); | |
1669 | ||
1670 | dev->mode_config.suggested_y_property = | |
1671 | drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff); | |
1672 | ||
1673 | if (dev->mode_config.suggested_x_property == NULL || | |
1674 | dev->mode_config.suggested_y_property == NULL) | |
1675 | return -ENOMEM; | |
1676 | return 0; | |
1677 | } | |
1678 | EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties); | |
1679 | ||
1680 | /** | |
97e14fbe | 1681 | * drm_connector_set_path_property - set tile property on connector |
52217195 DV |
1682 | * @connector: connector to set property on. |
1683 | * @path: path to use for property; must not be NULL. | |
1684 | * | |
1685 | * This creates a property to expose to userspace to specify a | |
1686 | * connector path. This is mainly used for DisplayPort MST where | |
1687 | * connectors have a topology and we want to allow userspace to give | |
1688 | * them more meaningful names. | |
1689 | * | |
1690 | * Returns: | |
1691 | * Zero on success, negative errno on failure. | |
1692 | */ | |
97e14fbe DV |
1693 | int drm_connector_set_path_property(struct drm_connector *connector, |
1694 | const char *path) | |
52217195 DV |
1695 | { |
1696 | struct drm_device *dev = connector->dev; | |
1697 | int ret; | |
1698 | ||
1699 | ret = drm_property_replace_global_blob(dev, | |
1700 | &connector->path_blob_ptr, | |
1701 | strlen(path) + 1, | |
1702 | path, | |
1703 | &connector->base, | |
1704 | dev->mode_config.path_property); | |
1705 | return ret; | |
1706 | } | |
97e14fbe | 1707 | EXPORT_SYMBOL(drm_connector_set_path_property); |
52217195 DV |
1708 | |
1709 | /** | |
97e14fbe | 1710 | * drm_connector_set_tile_property - set tile property on connector |
52217195 DV |
1711 | * @connector: connector to set property on. |
1712 | * | |
1713 | * This looks up the tile information for a connector, and creates a | |
1714 | * property for userspace to parse if it exists. The property is of | |
1715 | * the form of 8 integers using ':' as a separator. | |
2de3a078 MN |
1716 | * This is used for dual port tiled displays with DisplayPort SST |
1717 | * or DisplayPort MST connectors. | |
52217195 DV |
1718 | * |
1719 | * Returns: | |
1720 | * Zero on success, errno on failure. | |
1721 | */ | |
97e14fbe | 1722 | int drm_connector_set_tile_property(struct drm_connector *connector) |
52217195 DV |
1723 | { |
1724 | struct drm_device *dev = connector->dev; | |
1725 | char tile[256]; | |
1726 | int ret; | |
1727 | ||
1728 | if (!connector->has_tile) { | |
1729 | ret = drm_property_replace_global_blob(dev, | |
1730 | &connector->tile_blob_ptr, | |
1731 | 0, | |
1732 | NULL, | |
1733 | &connector->base, | |
1734 | dev->mode_config.tile_property); | |
1735 | return ret; | |
1736 | } | |
1737 | ||
1738 | snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d", | |
1739 | connector->tile_group->id, connector->tile_is_single_monitor, | |
1740 | connector->num_h_tile, connector->num_v_tile, | |
1741 | connector->tile_h_loc, connector->tile_v_loc, | |
1742 | connector->tile_h_size, connector->tile_v_size); | |
1743 | ||
1744 | ret = drm_property_replace_global_blob(dev, | |
1745 | &connector->tile_blob_ptr, | |
1746 | strlen(tile) + 1, | |
1747 | tile, | |
1748 | &connector->base, | |
1749 | dev->mode_config.tile_property); | |
1750 | return ret; | |
1751 | } | |
97e14fbe | 1752 | EXPORT_SYMBOL(drm_connector_set_tile_property); |
52217195 DV |
1753 | |
1754 | /** | |
c555f023 | 1755 | * drm_connector_update_edid_property - update the edid property of a connector |
52217195 DV |
1756 | * @connector: drm connector |
1757 | * @edid: new value of the edid property | |
1758 | * | |
1759 | * This function creates a new blob modeset object and assigns its id to the | |
1760 | * connector's edid property. | |
2de3a078 MN |
1761 | * Since we also parse tile information from EDID's displayID block, we also |
1762 | * set the connector's tile property here. See drm_connector_set_tile_property() | |
1763 | * for more details. | |
52217195 DV |
1764 | * |
1765 | * Returns: | |
1766 | * Zero on success, negative errno on failure. | |
1767 | */ | |
c555f023 | 1768 | int drm_connector_update_edid_property(struct drm_connector *connector, |
97e14fbe | 1769 | const struct edid *edid) |
52217195 DV |
1770 | { |
1771 | struct drm_device *dev = connector->dev; | |
1772 | size_t size = 0; | |
1773 | int ret; | |
1774 | ||
1775 | /* ignore requests to set edid when overridden */ | |
1776 | if (connector->override_edid) | |
1777 | return 0; | |
1778 | ||
1779 | if (edid) | |
1780 | size = EDID_LENGTH * (1 + edid->extensions); | |
1781 | ||
170178fe KP |
1782 | /* Set the display info, using edid if available, otherwise |
1783 | * reseting the values to defaults. This duplicates the work | |
1784 | * done in drm_add_edid_modes, but that function is not | |
1785 | * consistently called before this one in all drivers and the | |
1786 | * computation is cheap enough that it seems better to | |
1787 | * duplicate it rather than attempt to ensure some arbitrary | |
1788 | * ordering of calls. | |
1789 | */ | |
1790 | if (edid) | |
1791 | drm_add_display_info(connector, edid); | |
1792 | else | |
1793 | drm_reset_display_info(connector); | |
1794 | ||
66660d4c DA |
1795 | drm_object_property_set_value(&connector->base, |
1796 | dev->mode_config.non_desktop_property, | |
1797 | connector->display_info.non_desktop); | |
1798 | ||
52217195 DV |
1799 | ret = drm_property_replace_global_blob(dev, |
1800 | &connector->edid_blob_ptr, | |
1801 | size, | |
1802 | edid, | |
1803 | &connector->base, | |
1804 | dev->mode_config.edid_property); | |
2de3a078 MN |
1805 | if (ret) |
1806 | return ret; | |
1807 | return drm_connector_set_tile_property(connector); | |
52217195 | 1808 | } |
c555f023 | 1809 | EXPORT_SYMBOL(drm_connector_update_edid_property); |
52217195 | 1810 | |
40ee6fbe | 1811 | /** |
97e14fbe | 1812 | * drm_connector_set_link_status_property - Set link status property of a connector |
40ee6fbe MN |
1813 | * @connector: drm connector |
1814 | * @link_status: new value of link status property (0: Good, 1: Bad) | |
1815 | * | |
1816 | * In usual working scenario, this link status property will always be set to | |
1817 | * "GOOD". If something fails during or after a mode set, the kernel driver | |
1818 | * may set this link status property to "BAD". The caller then needs to send a | |
1819 | * hotplug uevent for userspace to re-check the valid modes through | |
1820 | * GET_CONNECTOR_IOCTL and retry modeset. | |
1821 | * | |
1822 | * Note: Drivers cannot rely on userspace to support this property and | |
1823 | * issue a modeset. As such, they may choose to handle issues (like | |
1824 | * re-training a link) without userspace's intervention. | |
1825 | * | |
1826 | * The reason for adding this property is to handle link training failures, but | |
1827 | * it is not limited to DP or link training. For example, if we implement | |
1828 | * asynchronous setcrtc, this property can be used to report any failures in that. | |
1829 | */ | |
97e14fbe DV |
1830 | void drm_connector_set_link_status_property(struct drm_connector *connector, |
1831 | uint64_t link_status) | |
40ee6fbe MN |
1832 | { |
1833 | struct drm_device *dev = connector->dev; | |
1834 | ||
1835 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); | |
1836 | connector->state->link_status = link_status; | |
1837 | drm_modeset_unlock(&dev->mode_config.connection_mutex); | |
1838 | } | |
97e14fbe | 1839 | EXPORT_SYMBOL(drm_connector_set_link_status_property); |
40ee6fbe | 1840 | |
47e22ff1 RS |
1841 | /** |
1842 | * drm_connector_attach_max_bpc_property - attach "max bpc" property | |
1843 | * @connector: connector to attach max bpc property on. | |
1844 | * @min: The minimum bit depth supported by the connector. | |
1845 | * @max: The maximum bit depth supported by the connector. | |
1846 | * | |
1847 | * This is used to add support for limiting the bit depth on a connector. | |
1848 | * | |
1849 | * Returns: | |
1850 | * Zero on success, negative errno on failure. | |
1851 | */ | |
1852 | int drm_connector_attach_max_bpc_property(struct drm_connector *connector, | |
1853 | int min, int max) | |
1854 | { | |
1855 | struct drm_device *dev = connector->dev; | |
1856 | struct drm_property *prop; | |
1857 | ||
1858 | prop = connector->max_bpc_property; | |
1859 | if (!prop) { | |
1860 | prop = drm_property_create_range(dev, 0, "max bpc", min, max); | |
1861 | if (!prop) | |
1862 | return -ENOMEM; | |
1863 | ||
1864 | connector->max_bpc_property = prop; | |
1865 | } | |
1866 | ||
1867 | drm_object_attach_property(&connector->base, prop, max); | |
1868 | connector->state->max_requested_bpc = max; | |
1869 | connector->state->max_bpc = max; | |
1870 | ||
1871 | return 0; | |
1872 | } | |
1873 | EXPORT_SYMBOL(drm_connector_attach_max_bpc_property); | |
1874 | ||
ba1b0f6c NK |
1875 | /** |
1876 | * drm_connector_set_vrr_capable_property - sets the variable refresh rate | |
1877 | * capable property for a connector | |
1878 | * @connector: drm connector | |
1879 | * @capable: True if the connector is variable refresh rate capable | |
1880 | * | |
1881 | * Should be used by atomic drivers to update the indicated support for | |
1882 | * variable refresh rate over a connector. | |
1883 | */ | |
1884 | void drm_connector_set_vrr_capable_property( | |
1885 | struct drm_connector *connector, bool capable) | |
1886 | { | |
1887 | drm_object_property_set_value(&connector->base, | |
1888 | connector->vrr_capable_property, | |
1889 | capable); | |
1890 | } | |
1891 | EXPORT_SYMBOL(drm_connector_set_vrr_capable_property); | |
1892 | ||
8d70f395 HG |
1893 | /** |
1894 | * drm_connector_init_panel_orientation_property - | |
1895 | * initialize the connecters panel_orientation property | |
1896 | * @connector: connector for which to init the panel-orientation property. | |
1897 | * @width: width in pixels of the panel, used for panel quirk detection | |
1898 | * @height: height in pixels of the panel, used for panel quirk detection | |
1899 | * | |
1900 | * This function should only be called for built-in panels, after setting | |
1901 | * connector->display_info.panel_orientation first (if known). | |
1902 | * | |
1903 | * This function will check for platform specific (e.g. DMI based) quirks | |
1904 | * overriding display_info.panel_orientation first, then if panel_orientation | |
1905 | * is not DRM_MODE_PANEL_ORIENTATION_UNKNOWN it will attach the | |
1906 | * "panel orientation" property to the connector. | |
1907 | * | |
1908 | * Returns: | |
1909 | * Zero on success, negative errno on failure. | |
1910 | */ | |
1911 | int drm_connector_init_panel_orientation_property( | |
1912 | struct drm_connector *connector, int width, int height) | |
1913 | { | |
1914 | struct drm_device *dev = connector->dev; | |
1915 | struct drm_display_info *info = &connector->display_info; | |
1916 | struct drm_property *prop; | |
1917 | int orientation_quirk; | |
1918 | ||
1919 | orientation_quirk = drm_get_panel_orientation_quirk(width, height); | |
1920 | if (orientation_quirk != DRM_MODE_PANEL_ORIENTATION_UNKNOWN) | |
1921 | info->panel_orientation = orientation_quirk; | |
1922 | ||
1923 | if (info->panel_orientation == DRM_MODE_PANEL_ORIENTATION_UNKNOWN) | |
1924 | return 0; | |
1925 | ||
1926 | prop = dev->mode_config.panel_orientation_property; | |
1927 | if (!prop) { | |
1928 | prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, | |
1929 | "panel orientation", | |
1930 | drm_panel_orientation_enum_list, | |
1931 | ARRAY_SIZE(drm_panel_orientation_enum_list)); | |
1932 | if (!prop) | |
1933 | return -ENOMEM; | |
1934 | ||
1935 | dev->mode_config.panel_orientation_property = prop; | |
1936 | } | |
1937 | ||
1938 | drm_object_attach_property(&connector->base, prop, | |
1939 | info->panel_orientation); | |
1940 | return 0; | |
1941 | } | |
1942 | EXPORT_SYMBOL(drm_connector_init_panel_orientation_property); | |
1943 | ||
97e14fbe | 1944 | int drm_connector_set_obj_prop(struct drm_mode_object *obj, |
52217195 DV |
1945 | struct drm_property *property, |
1946 | uint64_t value) | |
1947 | { | |
1948 | int ret = -EINVAL; | |
1949 | struct drm_connector *connector = obj_to_connector(obj); | |
1950 | ||
1951 | /* Do DPMS ourselves */ | |
1952 | if (property == connector->dev->mode_config.dpms_property) { | |
1953 | ret = (*connector->funcs->dpms)(connector, (int)value); | |
1954 | } else if (connector->funcs->set_property) | |
1955 | ret = connector->funcs->set_property(connector, property, value); | |
1956 | ||
144a7999 | 1957 | if (!ret) |
52217195 DV |
1958 | drm_object_property_set_value(&connector->base, property, value); |
1959 | return ret; | |
1960 | } | |
1961 | ||
97e14fbe DV |
1962 | int drm_connector_property_set_ioctl(struct drm_device *dev, |
1963 | void *data, struct drm_file *file_priv) | |
52217195 DV |
1964 | { |
1965 | struct drm_mode_connector_set_property *conn_set_prop = data; | |
1966 | struct drm_mode_obj_set_property obj_set_prop = { | |
1967 | .value = conn_set_prop->value, | |
1968 | .prop_id = conn_set_prop->prop_id, | |
1969 | .obj_id = conn_set_prop->connector_id, | |
1970 | .obj_type = DRM_MODE_OBJECT_CONNECTOR | |
1971 | }; | |
1972 | ||
1973 | /* It does all the locking and checking we need */ | |
1974 | return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv); | |
1975 | } | |
1976 | ||
1977 | static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector) | |
1978 | { | |
1979 | /* For atomic drivers only state objects are synchronously updated and | |
1980 | * protected by modeset locks, so check those first. */ | |
1981 | if (connector->state) | |
1982 | return connector->state->best_encoder; | |
1983 | return connector->encoder; | |
1984 | } | |
1985 | ||
c3ff0cdb AN |
1986 | static bool |
1987 | drm_mode_expose_to_userspace(const struct drm_display_mode *mode, | |
1988 | const struct list_head *export_list, | |
1989 | const struct drm_file *file_priv) | |
52217195 DV |
1990 | { |
1991 | /* | |
1992 | * If user-space hasn't configured the driver to expose the stereo 3D | |
1993 | * modes, don't expose them. | |
1994 | */ | |
1995 | if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode)) | |
1996 | return false; | |
c3ff0cdb AN |
1997 | /* |
1998 | * If user-space hasn't configured the driver to expose the modes | |
1999 | * with aspect-ratio, don't expose them. However if such a mode | |
2000 | * is unique, let it be exposed, but reset the aspect-ratio flags | |
2001 | * while preparing the list of user-modes. | |
2002 | */ | |
2003 | if (!file_priv->aspect_ratio_allowed) { | |
2004 | struct drm_display_mode *mode_itr; | |
2005 | ||
2006 | list_for_each_entry(mode_itr, export_list, export_head) | |
2007 | if (drm_mode_match(mode_itr, mode, | |
2008 | DRM_MODE_MATCH_TIMINGS | | |
2009 | DRM_MODE_MATCH_CLOCK | | |
2010 | DRM_MODE_MATCH_FLAGS | | |
2011 | DRM_MODE_MATCH_3D_FLAGS)) | |
2012 | return false; | |
2013 | } | |
52217195 DV |
2014 | |
2015 | return true; | |
2016 | } | |
2017 | ||
2018 | int drm_mode_getconnector(struct drm_device *dev, void *data, | |
2019 | struct drm_file *file_priv) | |
2020 | { | |
2021 | struct drm_mode_get_connector *out_resp = data; | |
2022 | struct drm_connector *connector; | |
2023 | struct drm_encoder *encoder; | |
2024 | struct drm_display_mode *mode; | |
2025 | int mode_count = 0; | |
2026 | int encoders_count = 0; | |
2027 | int ret = 0; | |
2028 | int copied = 0; | |
2029 | int i; | |
2030 | struct drm_mode_modeinfo u_mode; | |
2031 | struct drm_mode_modeinfo __user *mode_ptr; | |
2032 | uint32_t __user *encoder_ptr; | |
c3ff0cdb | 2033 | LIST_HEAD(export_list); |
52217195 DV |
2034 | |
2035 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
69fdf420 | 2036 | return -EOPNOTSUPP; |
52217195 DV |
2037 | |
2038 | memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo)); | |
2039 | ||
418da172 | 2040 | connector = drm_connector_lookup(dev, file_priv, out_resp->connector_id); |
91eefc05 DV |
2041 | if (!connector) |
2042 | return -ENOENT; | |
2043 | ||
83aefbb8 VS |
2044 | drm_connector_for_each_possible_encoder(connector, encoder, i) |
2045 | encoders_count++; | |
52217195 | 2046 | |
91eefc05 DV |
2047 | if ((out_resp->count_encoders >= encoders_count) && encoders_count) { |
2048 | copied = 0; | |
2049 | encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr); | |
83aefbb8 VS |
2050 | |
2051 | drm_connector_for_each_possible_encoder(connector, encoder, i) { | |
2052 | if (put_user(encoder->base.id, encoder_ptr + copied)) { | |
2053 | ret = -EFAULT; | |
2054 | goto out; | |
91eefc05 | 2055 | } |
83aefbb8 | 2056 | copied++; |
91eefc05 DV |
2057 | } |
2058 | } | |
2059 | out_resp->count_encoders = encoders_count; | |
2060 | ||
2061 | out_resp->connector_id = connector->base.id; | |
2062 | out_resp->connector_type = connector->connector_type; | |
2063 | out_resp->connector_type_id = connector->connector_type_id; | |
2064 | ||
2065 | mutex_lock(&dev->mode_config.mutex); | |
52217195 DV |
2066 | if (out_resp->count_modes == 0) { |
2067 | connector->funcs->fill_modes(connector, | |
2068 | dev->mode_config.max_width, | |
2069 | dev->mode_config.max_height); | |
2070 | } | |
2071 | ||
52217195 DV |
2072 | out_resp->mm_width = connector->display_info.width_mm; |
2073 | out_resp->mm_height = connector->display_info.height_mm; | |
2074 | out_resp->subpixel = connector->display_info.subpixel_order; | |
2075 | out_resp->connection = connector->status; | |
2076 | ||
91eefc05 DV |
2077 | /* delayed so we get modes regardless of pre-fill_modes state */ |
2078 | list_for_each_entry(mode, &connector->modes, head) | |
c3ff0cdb AN |
2079 | if (drm_mode_expose_to_userspace(mode, &export_list, |
2080 | file_priv)) { | |
2081 | list_add_tail(&mode->export_head, &export_list); | |
91eefc05 | 2082 | mode_count++; |
c3ff0cdb | 2083 | } |
52217195 DV |
2084 | |
2085 | /* | |
2086 | * This ioctl is called twice, once to determine how much space is | |
2087 | * needed, and the 2nd time to fill it. | |
c3ff0cdb AN |
2088 | * The modes that need to be exposed to the user are maintained in the |
2089 | * 'export_list'. When the ioctl is called first time to determine the, | |
2090 | * space, the export_list gets filled, to find the no.of modes. In the | |
2091 | * 2nd time, the user modes are filled, one by one from the export_list. | |
52217195 DV |
2092 | */ |
2093 | if ((out_resp->count_modes >= mode_count) && mode_count) { | |
2094 | copied = 0; | |
2095 | mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr; | |
c3ff0cdb | 2096 | list_for_each_entry(mode, &export_list, export_head) { |
52217195 | 2097 | drm_mode_convert_to_umode(&u_mode, mode); |
c3ff0cdb AN |
2098 | /* |
2099 | * Reset aspect ratio flags of user-mode, if modes with | |
2100 | * aspect-ratio are not supported. | |
2101 | */ | |
2102 | if (!file_priv->aspect_ratio_allowed) | |
2103 | u_mode.flags &= ~DRM_MODE_FLAG_PIC_AR_MASK; | |
52217195 DV |
2104 | if (copy_to_user(mode_ptr + copied, |
2105 | &u_mode, sizeof(u_mode))) { | |
2106 | ret = -EFAULT; | |
e94ac351 DV |
2107 | mutex_unlock(&dev->mode_config.mutex); |
2108 | ||
52217195 DV |
2109 | goto out; |
2110 | } | |
2111 | copied++; | |
2112 | } | |
2113 | } | |
2114 | out_resp->count_modes = mode_count; | |
52217195 | 2115 | mutex_unlock(&dev->mode_config.mutex); |
e94ac351 DV |
2116 | |
2117 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); | |
2118 | encoder = drm_connector_get_encoder(connector); | |
2119 | if (encoder) | |
2120 | out_resp->encoder_id = encoder->base.id; | |
2121 | else | |
2122 | out_resp->encoder_id = 0; | |
2123 | ||
2124 | /* Only grab properties after probing, to make sure EDID and other | |
2125 | * properties reflect the latest status. */ | |
2126 | ret = drm_mode_object_get_properties(&connector->base, file_priv->atomic, | |
2127 | (uint32_t __user *)(unsigned long)(out_resp->props_ptr), | |
2128 | (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr), | |
2129 | &out_resp->count_props); | |
2130 | drm_modeset_unlock(&dev->mode_config.connection_mutex); | |
2131 | ||
2132 | out: | |
ad093607 | 2133 | drm_connector_put(connector); |
52217195 DV |
2134 | |
2135 | return ret; | |
2136 | } | |
2137 | ||
9498c19b DV |
2138 | |
2139 | /** | |
2140 | * DOC: Tile group | |
2141 | * | |
2142 | * Tile groups are used to represent tiled monitors with a unique integer | |
2143 | * identifier. Tiled monitors using DisplayID v1.3 have a unique 8-byte handle, | |
2144 | * we store this in a tile group, so we have a common identifier for all tiles | |
2145 | * in a monitor group. The property is called "TILE". Drivers can manage tile | |
2146 | * groups using drm_mode_create_tile_group(), drm_mode_put_tile_group() and | |
2147 | * drm_mode_get_tile_group(). But this is only needed for internal panels where | |
2148 | * the tile group information is exposed through a non-standard way. | |
2149 | */ | |
2150 | ||
2151 | static void drm_tile_group_free(struct kref *kref) | |
2152 | { | |
2153 | struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount); | |
2154 | struct drm_device *dev = tg->dev; | |
2155 | mutex_lock(&dev->mode_config.idr_mutex); | |
2156 | idr_remove(&dev->mode_config.tile_idr, tg->id); | |
2157 | mutex_unlock(&dev->mode_config.idr_mutex); | |
2158 | kfree(tg); | |
2159 | } | |
2160 | ||
2161 | /** | |
2162 | * drm_mode_put_tile_group - drop a reference to a tile group. | |
2163 | * @dev: DRM device | |
2164 | * @tg: tile group to drop reference to. | |
2165 | * | |
2166 | * drop reference to tile group and free if 0. | |
2167 | */ | |
2168 | void drm_mode_put_tile_group(struct drm_device *dev, | |
2169 | struct drm_tile_group *tg) | |
2170 | { | |
2171 | kref_put(&tg->refcount, drm_tile_group_free); | |
2172 | } | |
2173 | EXPORT_SYMBOL(drm_mode_put_tile_group); | |
2174 | ||
2175 | /** | |
2176 | * drm_mode_get_tile_group - get a reference to an existing tile group | |
2177 | * @dev: DRM device | |
2178 | * @topology: 8-bytes unique per monitor. | |
2179 | * | |
2180 | * Use the unique bytes to get a reference to an existing tile group. | |
2181 | * | |
2182 | * RETURNS: | |
2183 | * tile group or NULL if not found. | |
2184 | */ | |
2185 | struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev, | |
2186 | char topology[8]) | |
2187 | { | |
2188 | struct drm_tile_group *tg; | |
2189 | int id; | |
2190 | mutex_lock(&dev->mode_config.idr_mutex); | |
2191 | idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) { | |
2192 | if (!memcmp(tg->group_data, topology, 8)) { | |
2193 | if (!kref_get_unless_zero(&tg->refcount)) | |
2194 | tg = NULL; | |
2195 | mutex_unlock(&dev->mode_config.idr_mutex); | |
2196 | return tg; | |
2197 | } | |
2198 | } | |
2199 | mutex_unlock(&dev->mode_config.idr_mutex); | |
2200 | return NULL; | |
2201 | } | |
2202 | EXPORT_SYMBOL(drm_mode_get_tile_group); | |
2203 | ||
2204 | /** | |
2205 | * drm_mode_create_tile_group - create a tile group from a displayid description | |
2206 | * @dev: DRM device | |
2207 | * @topology: 8-bytes unique per monitor. | |
2208 | * | |
2209 | * Create a tile group for the unique monitor, and get a unique | |
2210 | * identifier for the tile group. | |
2211 | * | |
2212 | * RETURNS: | |
705c8160 | 2213 | * new tile group or NULL. |
9498c19b DV |
2214 | */ |
2215 | struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev, | |
2216 | char topology[8]) | |
2217 | { | |
2218 | struct drm_tile_group *tg; | |
2219 | int ret; | |
2220 | ||
2221 | tg = kzalloc(sizeof(*tg), GFP_KERNEL); | |
2222 | if (!tg) | |
705c8160 | 2223 | return NULL; |
9498c19b DV |
2224 | |
2225 | kref_init(&tg->refcount); | |
2226 | memcpy(tg->group_data, topology, 8); | |
2227 | tg->dev = dev; | |
2228 | ||
2229 | mutex_lock(&dev->mode_config.idr_mutex); | |
2230 | ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL); | |
2231 | if (ret >= 0) { | |
2232 | tg->id = ret; | |
2233 | } else { | |
2234 | kfree(tg); | |
705c8160 | 2235 | tg = NULL; |
9498c19b DV |
2236 | } |
2237 | ||
2238 | mutex_unlock(&dev->mode_config.idr_mutex); | |
2239 | return tg; | |
2240 | } | |
2241 | EXPORT_SYMBOL(drm_mode_create_tile_group); |