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 | ||
8f86c82a | 23 | #include <drm/drm_auth.h> |
52217195 DV |
24 | #include <drm/drm_connector.h> |
25 | #include <drm/drm_edid.h> | |
9338203c | 26 | #include <drm/drm_encoder.h> |
8d70f395 | 27 | #include <drm/drm_utils.h> |
99f45e32 DV |
28 | #include <drm/drm_print.h> |
29 | #include <drm/drm_drv.h> | |
30 | #include <drm/drm_file.h> | |
334f74ee | 31 | #include <drm/drm_privacy_screen_consumer.h> |
968d81a6 | 32 | #include <drm/drm_sysfs.h> |
99f45e32 DV |
33 | |
34 | #include <linux/uaccess.h> | |
52217195 DV |
35 | |
36 | #include "drm_crtc_internal.h" | |
37 | #include "drm_internal.h" | |
38 | ||
ae2a6da8 DV |
39 | /** |
40 | * DOC: overview | |
41 | * | |
42 | * In DRM connectors are the general abstraction for display sinks, and include | |
84e543bc | 43 | * also fixed panels or anything else that can display pixels in some form. As |
ae2a6da8 DV |
44 | * opposed to all other KMS objects representing hardware (like CRTC, encoder or |
45 | * plane abstractions) connectors can be hotplugged and unplugged at runtime. | |
ad093607 TR |
46 | * Hence they are reference-counted using drm_connector_get() and |
47 | * drm_connector_put(). | |
ae2a6da8 | 48 | * |
d574528a DV |
49 | * KMS driver must create, initialize, register and attach at a &struct |
50 | * drm_connector for each such sink. The instance is created as other KMS | |
aec97460 DV |
51 | * objects and initialized by setting the following fields. The connector is |
52 | * initialized with a call to drm_connector_init() with a pointer to the | |
53 | * &struct drm_connector_funcs and a connector type, and then exposed to | |
54 | * userspace with a call to drm_connector_register(). | |
ae2a6da8 DV |
55 | * |
56 | * Connectors must be attached to an encoder to be used. For devices that map | |
57 | * connectors to encoders 1:1, the connector should be attached at | |
cde4c44d | 58 | * initialization time with a call to drm_connector_attach_encoder(). The |
d574528a | 59 | * driver must also set the &drm_connector.encoder field to point to the |
ae2a6da8 DV |
60 | * attached encoder. |
61 | * | |
62 | * For connectors which are not fixed (like built-in panels) the driver needs to | |
63 | * support hotplug notifications. The simplest way to do that is by using the | |
64 | * probe helpers, see drm_kms_helper_poll_init() for connectors which don't have | |
65 | * hardware support for hotplug interrupts. Connectors with hardware hotplug | |
66 | * support can instead use e.g. drm_helper_hpd_irq_event(). | |
67 | */ | |
68 | ||
3d3f7c1e HG |
69 | /* |
70 | * Global connector list for drm_connector_find_by_fwnode(). | |
71 | * Note drm_connector_[un]register() first take connector->lock and then | |
72 | * take the connector_list_lock. | |
73 | */ | |
74 | static DEFINE_MUTEX(connector_list_lock); | |
75 | static LIST_HEAD(connector_list); | |
76 | ||
52217195 DV |
77 | struct drm_conn_prop_enum_list { |
78 | int type; | |
79 | const char *name; | |
80 | struct ida ida; | |
81 | }; | |
82 | ||
83 | /* | |
84 | * Connector and encoder types. | |
85 | */ | |
86 | static struct drm_conn_prop_enum_list drm_connector_enum_list[] = { | |
87 | { DRM_MODE_CONNECTOR_Unknown, "Unknown" }, | |
88 | { DRM_MODE_CONNECTOR_VGA, "VGA" }, | |
89 | { DRM_MODE_CONNECTOR_DVII, "DVI-I" }, | |
90 | { DRM_MODE_CONNECTOR_DVID, "DVI-D" }, | |
91 | { DRM_MODE_CONNECTOR_DVIA, "DVI-A" }, | |
92 | { DRM_MODE_CONNECTOR_Composite, "Composite" }, | |
93 | { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" }, | |
94 | { DRM_MODE_CONNECTOR_LVDS, "LVDS" }, | |
95 | { DRM_MODE_CONNECTOR_Component, "Component" }, | |
96 | { DRM_MODE_CONNECTOR_9PinDIN, "DIN" }, | |
97 | { DRM_MODE_CONNECTOR_DisplayPort, "DP" }, | |
98 | { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" }, | |
99 | { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" }, | |
100 | { DRM_MODE_CONNECTOR_TV, "TV" }, | |
101 | { DRM_MODE_CONNECTOR_eDP, "eDP" }, | |
102 | { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" }, | |
103 | { DRM_MODE_CONNECTOR_DSI, "DSI" }, | |
104 | { DRM_MODE_CONNECTOR_DPI, "DPI" }, | |
935774cd | 105 | { DRM_MODE_CONNECTOR_WRITEBACK, "Writeback" }, |
fc06bf1d | 106 | { DRM_MODE_CONNECTOR_SPI, "SPI" }, |
757e2671 | 107 | { DRM_MODE_CONNECTOR_USB, "USB" }, |
52217195 DV |
108 | }; |
109 | ||
110 | void drm_connector_ida_init(void) | |
111 | { | |
112 | int i; | |
113 | ||
114 | for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++) | |
115 | ida_init(&drm_connector_enum_list[i].ida); | |
116 | } | |
117 | ||
118 | void drm_connector_ida_destroy(void) | |
119 | { | |
120 | int i; | |
121 | ||
122 | for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++) | |
123 | ida_destroy(&drm_connector_enum_list[i].ida); | |
124 | } | |
125 | ||
b35f90f2 LP |
126 | /** |
127 | * drm_get_connector_type_name - return a string for connector type | |
128 | * @type: The connector type (DRM_MODE_CONNECTOR_*) | |
129 | * | |
130 | * Returns: the name of the connector type, or NULL if the type is not valid. | |
131 | */ | |
132 | const char *drm_get_connector_type_name(unsigned int type) | |
133 | { | |
134 | if (type < ARRAY_SIZE(drm_connector_enum_list)) | |
135 | return drm_connector_enum_list[type].name; | |
136 | ||
137 | return NULL; | |
138 | } | |
139 | EXPORT_SYMBOL(drm_get_connector_type_name); | |
140 | ||
52217195 DV |
141 | /** |
142 | * drm_connector_get_cmdline_mode - reads the user's cmdline mode | |
84e543bc | 143 | * @connector: connector to query |
52217195 | 144 | * |
ae2a6da8 | 145 | * The kernel supports per-connector configuration of its consoles through |
52217195 DV |
146 | * use of the video= parameter. This function parses that option and |
147 | * extracts the user's specified mode (or enable/disable status) for a | |
148 | * particular connector. This is typically only used during the early fbdev | |
149 | * setup. | |
150 | */ | |
151 | static void drm_connector_get_cmdline_mode(struct drm_connector *connector) | |
152 | { | |
153 | struct drm_cmdline_mode *mode = &connector->cmdline_mode; | |
154 | char *option = NULL; | |
155 | ||
156 | if (fb_get_options(connector->name, &option)) | |
157 | return; | |
158 | ||
159 | if (!drm_mode_parse_command_line_for_connector(option, | |
160 | connector, | |
161 | mode)) | |
162 | return; | |
163 | ||
164 | if (mode->force) { | |
6140cf20 JN |
165 | DRM_INFO("forcing %s connector %s\n", connector->name, |
166 | drm_get_connector_force_name(mode->force)); | |
52217195 DV |
167 | connector->force = mode->force; |
168 | } | |
169 | ||
0980939d HG |
170 | if (mode->panel_orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN) { |
171 | DRM_INFO("cmdline forces connector %s panel_orientation to %d\n", | |
172 | connector->name, mode->panel_orientation); | |
173 | drm_connector_set_panel_orientation(connector, | |
174 | mode->panel_orientation); | |
175 | } | |
176 | ||
3aeeb13d | 177 | DRM_DEBUG_KMS("cmdline mode for connector %s %s %dx%d@%dHz%s%s%s\n", |
50b0946d | 178 | connector->name, mode->name, |
52217195 DV |
179 | mode->xres, mode->yres, |
180 | mode->refresh_specified ? mode->refresh : 60, | |
181 | mode->rb ? " reduced blanking" : "", | |
182 | mode->margins ? " with margins" : "", | |
183 | mode->interlace ? " interlaced" : ""); | |
184 | } | |
185 | ||
186 | static void drm_connector_free(struct kref *kref) | |
187 | { | |
188 | struct drm_connector *connector = | |
189 | container_of(kref, struct drm_connector, base.refcount); | |
190 | struct drm_device *dev = connector->dev; | |
191 | ||
192 | drm_mode_object_unregister(dev, &connector->base); | |
193 | connector->funcs->destroy(connector); | |
194 | } | |
195 | ||
ea497bb9 | 196 | void drm_connector_free_work_fn(struct work_struct *work) |
a703c550 | 197 | { |
ea497bb9 DV |
198 | struct drm_connector *connector, *n; |
199 | struct drm_device *dev = | |
200 | container_of(work, struct drm_device, mode_config.connector_free_work); | |
201 | struct drm_mode_config *config = &dev->mode_config; | |
202 | unsigned long flags; | |
203 | struct llist_node *freed; | |
a703c550 | 204 | |
ea497bb9 DV |
205 | spin_lock_irqsave(&config->connector_list_lock, flags); |
206 | freed = llist_del_all(&config->connector_free_list); | |
207 | spin_unlock_irqrestore(&config->connector_list_lock, flags); | |
208 | ||
209 | llist_for_each_entry_safe(connector, n, freed, free_node) { | |
210 | drm_mode_object_unregister(dev, &connector->base); | |
211 | connector->funcs->destroy(connector); | |
212 | } | |
a703c550 DV |
213 | } |
214 | ||
52217195 DV |
215 | /** |
216 | * drm_connector_init - Init a preallocated connector | |
217 | * @dev: DRM device | |
218 | * @connector: the connector to init | |
219 | * @funcs: callbacks for this connector | |
220 | * @connector_type: user visible type of the connector | |
221 | * | |
222 | * Initialises a preallocated connector. Connectors should be | |
223 | * subclassed as part of driver connector objects. | |
224 | * | |
225 | * Returns: | |
226 | * Zero on success, error code on failure. | |
227 | */ | |
228 | int drm_connector_init(struct drm_device *dev, | |
229 | struct drm_connector *connector, | |
230 | const struct drm_connector_funcs *funcs, | |
231 | int connector_type) | |
232 | { | |
233 | struct drm_mode_config *config = &dev->mode_config; | |
234 | int ret; | |
235 | struct ida *connector_ida = | |
236 | &drm_connector_enum_list[connector_type].ida; | |
237 | ||
ba1f665f HM |
238 | WARN_ON(drm_drv_uses_atomic_modeset(dev) && |
239 | (!funcs->atomic_destroy_state || | |
240 | !funcs->atomic_duplicate_state)); | |
241 | ||
2135ea7a TR |
242 | ret = __drm_mode_object_add(dev, &connector->base, |
243 | DRM_MODE_OBJECT_CONNECTOR, | |
244 | false, drm_connector_free); | |
52217195 | 245 | if (ret) |
613051da | 246 | return ret; |
52217195 DV |
247 | |
248 | connector->base.properties = &connector->properties; | |
249 | connector->dev = dev; | |
250 | connector->funcs = funcs; | |
251 | ||
2a8d3eac VS |
252 | /* connector index is used with 32bit bitmasks */ |
253 | ret = ida_simple_get(&config->connector_ida, 0, 32, GFP_KERNEL); | |
254 | if (ret < 0) { | |
255 | DRM_DEBUG_KMS("Failed to allocate %s connector index: %d\n", | |
256 | drm_connector_enum_list[connector_type].name, | |
257 | ret); | |
52217195 | 258 | goto out_put; |
2a8d3eac | 259 | } |
52217195 DV |
260 | connector->index = ret; |
261 | ret = 0; | |
262 | ||
263 | connector->connector_type = connector_type; | |
264 | connector->connector_type_id = | |
265 | ida_simple_get(connector_ida, 1, 0, GFP_KERNEL); | |
266 | if (connector->connector_type_id < 0) { | |
267 | ret = connector->connector_type_id; | |
268 | goto out_put_id; | |
269 | } | |
270 | connector->name = | |
271 | kasprintf(GFP_KERNEL, "%s-%d", | |
272 | drm_connector_enum_list[connector_type].name, | |
273 | connector->connector_type_id); | |
274 | if (!connector->name) { | |
275 | ret = -ENOMEM; | |
276 | goto out_put_type_id; | |
277 | } | |
278 | ||
3d3f7c1e | 279 | INIT_LIST_HEAD(&connector->global_connector_list_entry); |
52217195 DV |
280 | INIT_LIST_HEAD(&connector->probed_modes); |
281 | INIT_LIST_HEAD(&connector->modes); | |
e73ab00e | 282 | mutex_init(&connector->mutex); |
52217195 | 283 | connector->edid_blob_ptr = NULL; |
5186421c | 284 | connector->epoch_counter = 0; |
2de3a078 | 285 | connector->tile_blob_ptr = NULL; |
52217195 | 286 | connector->status = connector_status_unknown; |
8d70f395 HG |
287 | connector->display_info.panel_orientation = |
288 | DRM_MODE_PANEL_ORIENTATION_UNKNOWN; | |
52217195 DV |
289 | |
290 | drm_connector_get_cmdline_mode(connector); | |
291 | ||
292 | /* We should add connectors at the end to avoid upsetting the connector | |
c2ce66da BMC |
293 | * index too much. |
294 | */ | |
613051da | 295 | spin_lock_irq(&config->connector_list_lock); |
52217195 DV |
296 | list_add_tail(&connector->head, &config->connector_list); |
297 | config->num_connector++; | |
613051da | 298 | spin_unlock_irq(&config->connector_list_lock); |
52217195 | 299 | |
935774cd BS |
300 | if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL && |
301 | connector_type != DRM_MODE_CONNECTOR_WRITEBACK) | |
6b7e2d5c | 302 | drm_connector_attach_edid_property(connector); |
52217195 DV |
303 | |
304 | drm_object_attach_property(&connector->base, | |
305 | config->dpms_property, 0); | |
306 | ||
40ee6fbe MN |
307 | drm_object_attach_property(&connector->base, |
308 | config->link_status_property, | |
309 | 0); | |
310 | ||
66660d4c DA |
311 | drm_object_attach_property(&connector->base, |
312 | config->non_desktop_property, | |
313 | 0); | |
2de3a078 MN |
314 | drm_object_attach_property(&connector->base, |
315 | config->tile_property, | |
316 | 0); | |
66660d4c | 317 | |
52217195 DV |
318 | if (drm_core_check_feature(dev, DRIVER_ATOMIC)) { |
319 | drm_object_attach_property(&connector->base, config->prop_crtc_id, 0); | |
320 | } | |
321 | ||
322 | connector->debugfs_entry = NULL; | |
323 | out_put_type_id: | |
324 | if (ret) | |
587680c1 | 325 | ida_simple_remove(connector_ida, connector->connector_type_id); |
52217195 DV |
326 | out_put_id: |
327 | if (ret) | |
587680c1 | 328 | ida_simple_remove(&config->connector_ida, connector->index); |
52217195 DV |
329 | out_put: |
330 | if (ret) | |
331 | drm_mode_object_unregister(dev, &connector->base); | |
332 | ||
52217195 DV |
333 | return ret; |
334 | } | |
335 | EXPORT_SYMBOL(drm_connector_init); | |
336 | ||
100163df AP |
337 | /** |
338 | * drm_connector_init_with_ddc - Init a preallocated connector | |
339 | * @dev: DRM device | |
340 | * @connector: the connector to init | |
341 | * @funcs: callbacks for this connector | |
342 | * @connector_type: user visible type of the connector | |
343 | * @ddc: pointer to the associated ddc adapter | |
344 | * | |
345 | * Initialises a preallocated connector. Connectors should be | |
346 | * subclassed as part of driver connector objects. | |
347 | * | |
348 | * Ensures that the ddc field of the connector is correctly set. | |
349 | * | |
350 | * Returns: | |
351 | * Zero on success, error code on failure. | |
352 | */ | |
353 | int drm_connector_init_with_ddc(struct drm_device *dev, | |
354 | struct drm_connector *connector, | |
355 | const struct drm_connector_funcs *funcs, | |
356 | int connector_type, | |
357 | struct i2c_adapter *ddc) | |
358 | { | |
359 | int ret; | |
360 | ||
361 | ret = drm_connector_init(dev, connector, funcs, connector_type); | |
362 | if (ret) | |
363 | return ret; | |
364 | ||
365 | /* provide ddc symlink in sysfs */ | |
366 | connector->ddc = ddc; | |
367 | ||
368 | return ret; | |
369 | } | |
370 | EXPORT_SYMBOL(drm_connector_init_with_ddc); | |
371 | ||
6b7e2d5c GH |
372 | /** |
373 | * drm_connector_attach_edid_property - attach edid property. | |
6b7e2d5c GH |
374 | * @connector: the connector |
375 | * | |
376 | * Some connector types like DRM_MODE_CONNECTOR_VIRTUAL do not get a | |
377 | * edid property attached by default. This function can be used to | |
378 | * explicitly enable the edid property in these cases. | |
379 | */ | |
380 | void drm_connector_attach_edid_property(struct drm_connector *connector) | |
381 | { | |
382 | struct drm_mode_config *config = &connector->dev->mode_config; | |
383 | ||
384 | drm_object_attach_property(&connector->base, | |
385 | config->edid_property, | |
386 | 0); | |
387 | } | |
388 | EXPORT_SYMBOL(drm_connector_attach_edid_property); | |
389 | ||
52217195 | 390 | /** |
cde4c44d | 391 | * drm_connector_attach_encoder - attach a connector to an encoder |
52217195 DV |
392 | * @connector: connector to attach |
393 | * @encoder: encoder to attach @connector to | |
394 | * | |
395 | * This function links up a connector to an encoder. Note that the routing | |
396 | * restrictions between encoders and crtcs are exposed to userspace through the | |
397 | * possible_clones and possible_crtcs bitmasks. | |
398 | * | |
399 | * Returns: | |
400 | * Zero on success, negative errno on failure. | |
401 | */ | |
cde4c44d DV |
402 | int drm_connector_attach_encoder(struct drm_connector *connector, |
403 | struct drm_encoder *encoder) | |
52217195 | 404 | { |
52217195 DV |
405 | /* |
406 | * In the past, drivers have attempted to model the static association | |
407 | * of connector to encoder in simple connector/encoder devices using a | |
408 | * direct assignment of connector->encoder = encoder. This connection | |
409 | * is a logical one and the responsibility of the core, so drivers are | |
410 | * expected not to mess with this. | |
411 | * | |
412 | * Note that the error return should've been enough here, but a large | |
413 | * majority of drivers ignores the return value, so add in a big WARN | |
414 | * to get people's attention. | |
415 | */ | |
416 | if (WARN_ON(connector->encoder)) | |
417 | return -EINVAL; | |
418 | ||
62afb4ad JRS |
419 | connector->possible_encoders |= drm_encoder_mask(encoder); |
420 | ||
421 | return 0; | |
52217195 | 422 | } |
cde4c44d | 423 | EXPORT_SYMBOL(drm_connector_attach_encoder); |
52217195 | 424 | |
38cb8d96 | 425 | /** |
62afb4ad JRS |
426 | * drm_connector_has_possible_encoder - check if the connector and encoder are |
427 | * associated with each other | |
38cb8d96 VS |
428 | * @connector: the connector |
429 | * @encoder: the encoder | |
430 | * | |
431 | * Returns: | |
432 | * True if @encoder is one of the possible encoders for @connector. | |
433 | */ | |
434 | bool drm_connector_has_possible_encoder(struct drm_connector *connector, | |
435 | struct drm_encoder *encoder) | |
436 | { | |
62afb4ad | 437 | return connector->possible_encoders & drm_encoder_mask(encoder); |
38cb8d96 VS |
438 | } |
439 | EXPORT_SYMBOL(drm_connector_has_possible_encoder); | |
440 | ||
52217195 DV |
441 | static void drm_mode_remove(struct drm_connector *connector, |
442 | struct drm_display_mode *mode) | |
443 | { | |
444 | list_del(&mode->head); | |
445 | drm_mode_destroy(connector->dev, mode); | |
446 | } | |
447 | ||
448 | /** | |
449 | * drm_connector_cleanup - cleans up an initialised connector | |
450 | * @connector: connector to cleanup | |
451 | * | |
452 | * Cleans up the connector but doesn't free the object. | |
453 | */ | |
454 | void drm_connector_cleanup(struct drm_connector *connector) | |
455 | { | |
456 | struct drm_device *dev = connector->dev; | |
457 | struct drm_display_mode *mode, *t; | |
458 | ||
459 | /* The connector should have been removed from userspace long before | |
460 | * it is finally destroyed. | |
461 | */ | |
39b50c60 LP |
462 | if (WARN_ON(connector->registration_state == |
463 | DRM_CONNECTOR_REGISTERED)) | |
52217195 DV |
464 | drm_connector_unregister(connector); |
465 | ||
334f74ee HG |
466 | if (connector->privacy_screen) { |
467 | drm_privacy_screen_put(connector->privacy_screen); | |
468 | connector->privacy_screen = NULL; | |
469 | } | |
470 | ||
52217195 DV |
471 | if (connector->tile_group) { |
472 | drm_mode_put_tile_group(dev, connector->tile_group); | |
473 | connector->tile_group = NULL; | |
474 | } | |
475 | ||
476 | list_for_each_entry_safe(mode, t, &connector->probed_modes, head) | |
477 | drm_mode_remove(connector, mode); | |
478 | ||
479 | list_for_each_entry_safe(mode, t, &connector->modes, head) | |
480 | drm_mode_remove(connector, mode); | |
481 | ||
9a47dba1 CJ |
482 | ida_simple_remove(&drm_connector_enum_list[connector->connector_type].ida, |
483 | connector->connector_type_id); | |
52217195 | 484 | |
9a47dba1 CJ |
485 | ida_simple_remove(&dev->mode_config.connector_ida, |
486 | connector->index); | |
52217195 DV |
487 | |
488 | kfree(connector->display_info.bus_formats); | |
489 | drm_mode_object_unregister(dev, &connector->base); | |
490 | kfree(connector->name); | |
491 | connector->name = NULL; | |
48c429c6 HG |
492 | fwnode_handle_put(connector->fwnode); |
493 | connector->fwnode = NULL; | |
613051da | 494 | spin_lock_irq(&dev->mode_config.connector_list_lock); |
52217195 DV |
495 | list_del(&connector->head); |
496 | dev->mode_config.num_connector--; | |
613051da | 497 | spin_unlock_irq(&dev->mode_config.connector_list_lock); |
52217195 DV |
498 | |
499 | WARN_ON(connector->state && !connector->funcs->atomic_destroy_state); | |
500 | if (connector->state && connector->funcs->atomic_destroy_state) | |
501 | connector->funcs->atomic_destroy_state(connector, | |
502 | connector->state); | |
503 | ||
e73ab00e DV |
504 | mutex_destroy(&connector->mutex); |
505 | ||
52217195 DV |
506 | memset(connector, 0, sizeof(*connector)); |
507 | } | |
508 | EXPORT_SYMBOL(drm_connector_cleanup); | |
509 | ||
510 | /** | |
511 | * drm_connector_register - register a connector | |
512 | * @connector: the connector to register | |
513 | * | |
69b22f51 DV |
514 | * Register userspace interfaces for a connector. Only call this for connectors |
515 | * which can be hotplugged after drm_dev_register() has been called already, | |
516 | * e.g. DP MST connectors. All other connectors will be registered automatically | |
517 | * when calling drm_dev_register(). | |
52217195 DV |
518 | * |
519 | * Returns: | |
520 | * Zero on success, error code on failure. | |
521 | */ | |
522 | int drm_connector_register(struct drm_connector *connector) | |
523 | { | |
e73ab00e | 524 | int ret = 0; |
52217195 | 525 | |
e6e7b48b DV |
526 | if (!connector->dev->registered) |
527 | return 0; | |
528 | ||
e73ab00e | 529 | mutex_lock(&connector->mutex); |
39b50c60 | 530 | if (connector->registration_state != DRM_CONNECTOR_INITIALIZING) |
e73ab00e | 531 | goto unlock; |
52217195 DV |
532 | |
533 | ret = drm_sysfs_connector_add(connector); | |
534 | if (ret) | |
e73ab00e | 535 | goto unlock; |
52217195 | 536 | |
b792e640 | 537 | drm_debugfs_connector_add(connector); |
52217195 DV |
538 | |
539 | if (connector->funcs->late_register) { | |
540 | ret = connector->funcs->late_register(connector); | |
541 | if (ret) | |
542 | goto err_debugfs; | |
543 | } | |
544 | ||
545 | drm_mode_object_register(connector->dev, &connector->base); | |
546 | ||
39b50c60 | 547 | connector->registration_state = DRM_CONNECTOR_REGISTERED; |
968d81a6 JS |
548 | |
549 | /* Let userspace know we have a new connector */ | |
ad935754 | 550 | drm_sysfs_connector_hotplug_event(connector); |
968d81a6 | 551 | |
334f74ee HG |
552 | if (connector->privacy_screen) |
553 | drm_privacy_screen_register_notifier(connector->privacy_screen, | |
554 | &connector->privacy_screen_notifier); | |
555 | ||
3d3f7c1e HG |
556 | mutex_lock(&connector_list_lock); |
557 | list_add_tail(&connector->global_connector_list_entry, &connector_list); | |
558 | mutex_unlock(&connector_list_lock); | |
e73ab00e | 559 | goto unlock; |
52217195 DV |
560 | |
561 | err_debugfs: | |
562 | drm_debugfs_connector_remove(connector); | |
52217195 | 563 | drm_sysfs_connector_remove(connector); |
e73ab00e DV |
564 | unlock: |
565 | mutex_unlock(&connector->mutex); | |
52217195 DV |
566 | return ret; |
567 | } | |
568 | EXPORT_SYMBOL(drm_connector_register); | |
569 | ||
570 | /** | |
571 | * drm_connector_unregister - unregister a connector | |
572 | * @connector: the connector to unregister | |
573 | * | |
69b22f51 DV |
574 | * Unregister userspace interfaces for a connector. Only call this for |
575 | * connectors which have registered explicitly by calling drm_dev_register(), | |
576 | * since connectors are unregistered automatically when drm_dev_unregister() is | |
577 | * called. | |
52217195 DV |
578 | */ |
579 | void drm_connector_unregister(struct drm_connector *connector) | |
580 | { | |
e73ab00e | 581 | mutex_lock(&connector->mutex); |
39b50c60 | 582 | if (connector->registration_state != DRM_CONNECTOR_REGISTERED) { |
e73ab00e | 583 | mutex_unlock(&connector->mutex); |
52217195 | 584 | return; |
e73ab00e | 585 | } |
52217195 | 586 | |
3d3f7c1e HG |
587 | mutex_lock(&connector_list_lock); |
588 | list_del_init(&connector->global_connector_list_entry); | |
589 | mutex_unlock(&connector_list_lock); | |
590 | ||
334f74ee HG |
591 | if (connector->privacy_screen) |
592 | drm_privacy_screen_unregister_notifier( | |
593 | connector->privacy_screen, | |
594 | &connector->privacy_screen_notifier); | |
595 | ||
52217195 DV |
596 | if (connector->funcs->early_unregister) |
597 | connector->funcs->early_unregister(connector); | |
598 | ||
599 | drm_sysfs_connector_remove(connector); | |
600 | drm_debugfs_connector_remove(connector); | |
601 | ||
39b50c60 | 602 | connector->registration_state = DRM_CONNECTOR_UNREGISTERED; |
e73ab00e | 603 | mutex_unlock(&connector->mutex); |
52217195 DV |
604 | } |
605 | EXPORT_SYMBOL(drm_connector_unregister); | |
606 | ||
607 | void drm_connector_unregister_all(struct drm_device *dev) | |
608 | { | |
609 | struct drm_connector *connector; | |
613051da | 610 | struct drm_connector_list_iter conn_iter; |
52217195 | 611 | |
b982dab1 | 612 | drm_connector_list_iter_begin(dev, &conn_iter); |
613051da | 613 | drm_for_each_connector_iter(connector, &conn_iter) |
52217195 | 614 | drm_connector_unregister(connector); |
b982dab1 | 615 | drm_connector_list_iter_end(&conn_iter); |
52217195 DV |
616 | } |
617 | ||
618 | int drm_connector_register_all(struct drm_device *dev) | |
619 | { | |
620 | struct drm_connector *connector; | |
613051da DV |
621 | struct drm_connector_list_iter conn_iter; |
622 | int ret = 0; | |
52217195 | 623 | |
b982dab1 | 624 | drm_connector_list_iter_begin(dev, &conn_iter); |
613051da | 625 | drm_for_each_connector_iter(connector, &conn_iter) { |
52217195 DV |
626 | ret = drm_connector_register(connector); |
627 | if (ret) | |
613051da | 628 | break; |
52217195 | 629 | } |
b982dab1 | 630 | drm_connector_list_iter_end(&conn_iter); |
52217195 | 631 | |
613051da DV |
632 | if (ret) |
633 | drm_connector_unregister_all(dev); | |
52217195 DV |
634 | return ret; |
635 | } | |
636 | ||
637 | /** | |
638 | * drm_get_connector_status_name - return a string for connector status | |
639 | * @status: connector status to compute name of | |
640 | * | |
641 | * In contrast to the other drm_get_*_name functions this one here returns a | |
642 | * const pointer and hence is threadsafe. | |
f85d9e59 RD |
643 | * |
644 | * Returns: connector status string | |
52217195 DV |
645 | */ |
646 | const char *drm_get_connector_status_name(enum drm_connector_status status) | |
647 | { | |
648 | if (status == connector_status_connected) | |
649 | return "connected"; | |
650 | else if (status == connector_status_disconnected) | |
651 | return "disconnected"; | |
652 | else | |
653 | return "unknown"; | |
654 | } | |
655 | EXPORT_SYMBOL(drm_get_connector_status_name); | |
656 | ||
6140cf20 JN |
657 | /** |
658 | * drm_get_connector_force_name - return a string for connector force | |
659 | * @force: connector force to get name of | |
660 | * | |
661 | * Returns: const pointer to name. | |
662 | */ | |
663 | const char *drm_get_connector_force_name(enum drm_connector_force force) | |
664 | { | |
665 | switch (force) { | |
666 | case DRM_FORCE_UNSPECIFIED: | |
667 | return "unspecified"; | |
668 | case DRM_FORCE_OFF: | |
669 | return "off"; | |
670 | case DRM_FORCE_ON: | |
671 | return "on"; | |
672 | case DRM_FORCE_ON_DIGITAL: | |
673 | return "digital"; | |
674 | default: | |
675 | return "unknown"; | |
676 | } | |
677 | } | |
678 | ||
613051da DV |
679 | #ifdef CONFIG_LOCKDEP |
680 | static struct lockdep_map connector_list_iter_dep_map = { | |
681 | .name = "drm_connector_list_iter" | |
682 | }; | |
683 | #endif | |
684 | ||
685 | /** | |
b982dab1 | 686 | * drm_connector_list_iter_begin - initialize a connector_list iterator |
613051da DV |
687 | * @dev: DRM device |
688 | * @iter: connector_list iterator | |
689 | * | |
d574528a | 690 | * Sets @iter up to walk the &drm_mode_config.connector_list of @dev. @iter |
b982dab1 | 691 | * must always be cleaned up again by calling drm_connector_list_iter_end(). |
613051da DV |
692 | * Iteration itself happens using drm_connector_list_iter_next() or |
693 | * drm_for_each_connector_iter(). | |
694 | */ | |
b982dab1 TR |
695 | void drm_connector_list_iter_begin(struct drm_device *dev, |
696 | struct drm_connector_list_iter *iter) | |
613051da DV |
697 | { |
698 | iter->dev = dev; | |
699 | iter->conn = NULL; | |
700 | lock_acquire_shared_recursive(&connector_list_iter_dep_map, 0, 1, NULL, _RET_IP_); | |
701 | } | |
b982dab1 | 702 | EXPORT_SYMBOL(drm_connector_list_iter_begin); |
613051da | 703 | |
a703c550 DV |
704 | /* |
705 | * Extra-safe connector put function that works in any context. Should only be | |
706 | * used from the connector_iter functions, where we never really expect to | |
707 | * actually release the connector when dropping our final reference. | |
708 | */ | |
709 | static void | |
ea497bb9 | 710 | __drm_connector_put_safe(struct drm_connector *conn) |
a703c550 | 711 | { |
ea497bb9 DV |
712 | struct drm_mode_config *config = &conn->dev->mode_config; |
713 | ||
714 | lockdep_assert_held(&config->connector_list_lock); | |
715 | ||
716 | if (!refcount_dec_and_test(&conn->base.refcount.refcount)) | |
717 | return; | |
718 | ||
719 | llist_add(&conn->free_node, &config->connector_free_list); | |
720 | schedule_work(&config->connector_free_work); | |
a703c550 DV |
721 | } |
722 | ||
613051da DV |
723 | /** |
724 | * drm_connector_list_iter_next - return next connector | |
4f45c778 | 725 | * @iter: connector_list iterator |
613051da | 726 | * |
f85d9e59 | 727 | * Returns: the next connector for @iter, or NULL when the list walk has |
613051da DV |
728 | * completed. |
729 | */ | |
730 | struct drm_connector * | |
731 | drm_connector_list_iter_next(struct drm_connector_list_iter *iter) | |
732 | { | |
733 | struct drm_connector *old_conn = iter->conn; | |
734 | struct drm_mode_config *config = &iter->dev->mode_config; | |
735 | struct list_head *lhead; | |
736 | unsigned long flags; | |
737 | ||
738 | spin_lock_irqsave(&config->connector_list_lock, flags); | |
739 | lhead = old_conn ? &old_conn->head : &config->connector_list; | |
740 | ||
741 | do { | |
742 | if (lhead->next == &config->connector_list) { | |
743 | iter->conn = NULL; | |
744 | break; | |
745 | } | |
746 | ||
747 | lhead = lhead->next; | |
748 | iter->conn = list_entry(lhead, struct drm_connector, head); | |
749 | ||
750 | /* loop until it's not a zombie connector */ | |
751 | } while (!kref_get_unless_zero(&iter->conn->base.refcount)); | |
613051da DV |
752 | |
753 | if (old_conn) | |
ea497bb9 DV |
754 | __drm_connector_put_safe(old_conn); |
755 | spin_unlock_irqrestore(&config->connector_list_lock, flags); | |
613051da DV |
756 | |
757 | return iter->conn; | |
758 | } | |
759 | EXPORT_SYMBOL(drm_connector_list_iter_next); | |
760 | ||
761 | /** | |
b982dab1 | 762 | * drm_connector_list_iter_end - tear down a connector_list iterator |
613051da DV |
763 | * @iter: connector_list iterator |
764 | * | |
765 | * Tears down @iter and releases any resources (like &drm_connector references) | |
766 | * acquired while walking the list. This must always be called, both when the | |
767 | * iteration completes fully or when it was aborted without walking the entire | |
768 | * list. | |
769 | */ | |
b982dab1 | 770 | void drm_connector_list_iter_end(struct drm_connector_list_iter *iter) |
613051da | 771 | { |
ea497bb9 DV |
772 | struct drm_mode_config *config = &iter->dev->mode_config; |
773 | unsigned long flags; | |
774 | ||
613051da | 775 | iter->dev = NULL; |
ea497bb9 DV |
776 | if (iter->conn) { |
777 | spin_lock_irqsave(&config->connector_list_lock, flags); | |
778 | __drm_connector_put_safe(iter->conn); | |
779 | spin_unlock_irqrestore(&config->connector_list_lock, flags); | |
780 | } | |
5facae4f | 781 | lock_release(&connector_list_iter_dep_map, _RET_IP_); |
613051da | 782 | } |
b982dab1 | 783 | EXPORT_SYMBOL(drm_connector_list_iter_end); |
613051da | 784 | |
52217195 DV |
785 | static const struct drm_prop_enum_list drm_subpixel_enum_list[] = { |
786 | { SubPixelUnknown, "Unknown" }, | |
787 | { SubPixelHorizontalRGB, "Horizontal RGB" }, | |
788 | { SubPixelHorizontalBGR, "Horizontal BGR" }, | |
789 | { SubPixelVerticalRGB, "Vertical RGB" }, | |
790 | { SubPixelVerticalBGR, "Vertical BGR" }, | |
791 | { SubPixelNone, "None" }, | |
792 | }; | |
793 | ||
794 | /** | |
795 | * drm_get_subpixel_order_name - return a string for a given subpixel enum | |
796 | * @order: enum of subpixel_order | |
797 | * | |
798 | * Note you could abuse this and return something out of bounds, but that | |
799 | * would be a caller error. No unscrubbed user data should make it here. | |
f85d9e59 RD |
800 | * |
801 | * Returns: string describing an enumerated subpixel property | |
52217195 DV |
802 | */ |
803 | const char *drm_get_subpixel_order_name(enum subpixel_order order) | |
804 | { | |
805 | return drm_subpixel_enum_list[order].name; | |
806 | } | |
807 | EXPORT_SYMBOL(drm_get_subpixel_order_name); | |
808 | ||
809 | static const struct drm_prop_enum_list drm_dpms_enum_list[] = { | |
810 | { DRM_MODE_DPMS_ON, "On" }, | |
811 | { DRM_MODE_DPMS_STANDBY, "Standby" }, | |
812 | { DRM_MODE_DPMS_SUSPEND, "Suspend" }, | |
813 | { DRM_MODE_DPMS_OFF, "Off" } | |
814 | }; | |
815 | DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list) | |
816 | ||
40ee6fbe MN |
817 | static const struct drm_prop_enum_list drm_link_status_enum_list[] = { |
818 | { DRM_MODE_LINK_STATUS_GOOD, "Good" }, | |
819 | { DRM_MODE_LINK_STATUS_BAD, "Bad" }, | |
820 | }; | |
40ee6fbe | 821 | |
b3c6c8bf DV |
822 | /** |
823 | * drm_display_info_set_bus_formats - set the supported bus formats | |
824 | * @info: display info to store bus formats in | |
825 | * @formats: array containing the supported bus formats | |
826 | * @num_formats: the number of entries in the fmts array | |
827 | * | |
828 | * Store the supported bus formats in display info structure. | |
829 | * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for | |
830 | * a full list of available formats. | |
f85d9e59 RD |
831 | * |
832 | * Returns: | |
833 | * 0 on success or a negative error code on failure. | |
b3c6c8bf DV |
834 | */ |
835 | int drm_display_info_set_bus_formats(struct drm_display_info *info, | |
836 | const u32 *formats, | |
837 | unsigned int num_formats) | |
838 | { | |
839 | u32 *fmts = NULL; | |
840 | ||
841 | if (!formats && num_formats) | |
842 | return -EINVAL; | |
843 | ||
844 | if (formats && num_formats) { | |
845 | fmts = kmemdup(formats, sizeof(*formats) * num_formats, | |
846 | GFP_KERNEL); | |
847 | if (!fmts) | |
848 | return -ENOMEM; | |
849 | } | |
850 | ||
851 | kfree(info->bus_formats); | |
852 | info->bus_formats = fmts; | |
853 | info->num_bus_formats = num_formats; | |
854 | ||
855 | return 0; | |
856 | } | |
857 | EXPORT_SYMBOL(drm_display_info_set_bus_formats); | |
858 | ||
52217195 DV |
859 | /* Optional connector properties. */ |
860 | static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] = { | |
861 | { DRM_MODE_SCALE_NONE, "None" }, | |
862 | { DRM_MODE_SCALE_FULLSCREEN, "Full" }, | |
863 | { DRM_MODE_SCALE_CENTER, "Center" }, | |
864 | { DRM_MODE_SCALE_ASPECT, "Full aspect" }, | |
865 | }; | |
866 | ||
867 | static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = { | |
868 | { DRM_MODE_PICTURE_ASPECT_NONE, "Automatic" }, | |
869 | { DRM_MODE_PICTURE_ASPECT_4_3, "4:3" }, | |
870 | { DRM_MODE_PICTURE_ASPECT_16_9, "16:9" }, | |
871 | }; | |
872 | ||
50525c33 SL |
873 | static const struct drm_prop_enum_list drm_content_type_enum_list[] = { |
874 | { DRM_MODE_CONTENT_TYPE_NO_DATA, "No Data" }, | |
875 | { DRM_MODE_CONTENT_TYPE_GRAPHICS, "Graphics" }, | |
876 | { DRM_MODE_CONTENT_TYPE_PHOTO, "Photo" }, | |
877 | { DRM_MODE_CONTENT_TYPE_CINEMA, "Cinema" }, | |
878 | { DRM_MODE_CONTENT_TYPE_GAME, "Game" }, | |
879 | }; | |
880 | ||
8d70f395 HG |
881 | static const struct drm_prop_enum_list drm_panel_orientation_enum_list[] = { |
882 | { DRM_MODE_PANEL_ORIENTATION_NORMAL, "Normal" }, | |
883 | { DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP, "Upside Down" }, | |
884 | { DRM_MODE_PANEL_ORIENTATION_LEFT_UP, "Left Side Up" }, | |
885 | { DRM_MODE_PANEL_ORIENTATION_RIGHT_UP, "Right Side Up" }, | |
886 | }; | |
887 | ||
52217195 DV |
888 | static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = { |
889 | { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ | |
890 | { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ | |
891 | { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ | |
892 | }; | |
893 | DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list) | |
894 | ||
895 | static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = { | |
e5b92773 | 896 | { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I, TV-out and DP */ |
52217195 DV |
897 | { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ |
898 | { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ | |
899 | }; | |
900 | DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name, | |
901 | drm_dvi_i_subconnector_enum_list) | |
902 | ||
903 | static const struct drm_prop_enum_list drm_tv_select_enum_list[] = { | |
904 | { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ | |
905 | { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ | |
906 | { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ | |
907 | { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ | |
908 | { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ | |
909 | }; | |
910 | DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list) | |
911 | ||
912 | static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = { | |
e5b92773 | 913 | { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I, TV-out and DP */ |
52217195 DV |
914 | { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ |
915 | { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ | |
916 | { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ | |
917 | { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ | |
918 | }; | |
919 | DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name, | |
920 | drm_tv_subconnector_enum_list) | |
921 | ||
e5b92773 OV |
922 | static const struct drm_prop_enum_list drm_dp_subconnector_enum_list[] = { |
923 | { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I, TV-out and DP */ | |
924 | { DRM_MODE_SUBCONNECTOR_VGA, "VGA" }, /* DP */ | |
925 | { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DP */ | |
926 | { DRM_MODE_SUBCONNECTOR_HDMIA, "HDMI" }, /* DP */ | |
927 | { DRM_MODE_SUBCONNECTOR_DisplayPort, "DP" }, /* DP */ | |
928 | { DRM_MODE_SUBCONNECTOR_Wireless, "Wireless" }, /* DP */ | |
929 | { DRM_MODE_SUBCONNECTOR_Native, "Native" }, /* DP */ | |
930 | }; | |
931 | ||
932 | DRM_ENUM_NAME_FN(drm_get_dp_subconnector_name, | |
933 | drm_dp_subconnector_enum_list) | |
934 | ||
d2c6a405 US |
935 | static const struct drm_prop_enum_list hdmi_colorspaces[] = { |
936 | /* For Default case, driver will set the colorspace */ | |
937 | { DRM_MODE_COLORIMETRY_DEFAULT, "Default" }, | |
938 | /* Standard Definition Colorimetry based on CEA 861 */ | |
939 | { DRM_MODE_COLORIMETRY_SMPTE_170M_YCC, "SMPTE_170M_YCC" }, | |
940 | { DRM_MODE_COLORIMETRY_BT709_YCC, "BT709_YCC" }, | |
941 | /* Standard Definition Colorimetry based on IEC 61966-2-4 */ | |
942 | { DRM_MODE_COLORIMETRY_XVYCC_601, "XVYCC_601" }, | |
943 | /* High Definition Colorimetry based on IEC 61966-2-4 */ | |
944 | { DRM_MODE_COLORIMETRY_XVYCC_709, "XVYCC_709" }, | |
945 | /* Colorimetry based on IEC 61966-2-1/Amendment 1 */ | |
946 | { DRM_MODE_COLORIMETRY_SYCC_601, "SYCC_601" }, | |
947 | /* Colorimetry based on IEC 61966-2-5 [33] */ | |
948 | { DRM_MODE_COLORIMETRY_OPYCC_601, "opYCC_601" }, | |
949 | /* Colorimetry based on IEC 61966-2-5 */ | |
950 | { DRM_MODE_COLORIMETRY_OPRGB, "opRGB" }, | |
951 | /* Colorimetry based on ITU-R BT.2020 */ | |
952 | { DRM_MODE_COLORIMETRY_BT2020_CYCC, "BT2020_CYCC" }, | |
953 | /* Colorimetry based on ITU-R BT.2020 */ | |
954 | { DRM_MODE_COLORIMETRY_BT2020_RGB, "BT2020_RGB" }, | |
955 | /* Colorimetry based on ITU-R BT.2020 */ | |
956 | { DRM_MODE_COLORIMETRY_BT2020_YCC, "BT2020_YCC" }, | |
957 | /* Added as part of Additional Colorimetry Extension in 861.G */ | |
958 | { DRM_MODE_COLORIMETRY_DCI_P3_RGB_D65, "DCI-P3_RGB_D65" }, | |
959 | { DRM_MODE_COLORIMETRY_DCI_P3_RGB_THEATER, "DCI-P3_RGB_Theater" }, | |
960 | }; | |
961 | ||
45cf0e91 GM |
962 | /* |
963 | * As per DP 1.4a spec, 2.2.5.7.5 VSC SDP Payload for Pixel Encoding/Colorimetry | |
964 | * Format Table 2-120 | |
965 | */ | |
966 | static const struct drm_prop_enum_list dp_colorspaces[] = { | |
967 | /* For Default case, driver will set the colorspace */ | |
968 | { DRM_MODE_COLORIMETRY_DEFAULT, "Default" }, | |
969 | { DRM_MODE_COLORIMETRY_RGB_WIDE_FIXED, "RGB_Wide_Gamut_Fixed_Point" }, | |
970 | /* Colorimetry based on scRGB (IEC 61966-2-2) */ | |
971 | { DRM_MODE_COLORIMETRY_RGB_WIDE_FLOAT, "RGB_Wide_Gamut_Floating_Point" }, | |
972 | /* Colorimetry based on IEC 61966-2-5 */ | |
973 | { DRM_MODE_COLORIMETRY_OPRGB, "opRGB" }, | |
974 | /* Colorimetry based on SMPTE RP 431-2 */ | |
975 | { DRM_MODE_COLORIMETRY_DCI_P3_RGB_D65, "DCI-P3_RGB_D65" }, | |
976 | /* Colorimetry based on ITU-R BT.2020 */ | |
977 | { DRM_MODE_COLORIMETRY_BT2020_RGB, "BT2020_RGB" }, | |
978 | { DRM_MODE_COLORIMETRY_BT601_YCC, "BT601_YCC" }, | |
979 | { DRM_MODE_COLORIMETRY_BT709_YCC, "BT709_YCC" }, | |
980 | /* Standard Definition Colorimetry based on IEC 61966-2-4 */ | |
981 | { DRM_MODE_COLORIMETRY_XVYCC_601, "XVYCC_601" }, | |
982 | /* High Definition Colorimetry based on IEC 61966-2-4 */ | |
983 | { DRM_MODE_COLORIMETRY_XVYCC_709, "XVYCC_709" }, | |
984 | /* Colorimetry based on IEC 61966-2-1/Amendment 1 */ | |
985 | { DRM_MODE_COLORIMETRY_SYCC_601, "SYCC_601" }, | |
986 | /* Colorimetry based on IEC 61966-2-5 [33] */ | |
987 | { DRM_MODE_COLORIMETRY_OPYCC_601, "opYCC_601" }, | |
988 | /* Colorimetry based on ITU-R BT.2020 */ | |
989 | { DRM_MODE_COLORIMETRY_BT2020_CYCC, "BT2020_CYCC" }, | |
990 | /* Colorimetry based on ITU-R BT.2020 */ | |
991 | { DRM_MODE_COLORIMETRY_BT2020_YCC, "BT2020_YCC" }, | |
992 | }; | |
993 | ||
4ada6f22 DV |
994 | /** |
995 | * DOC: standard connector properties | |
996 | * | |
997 | * DRM connectors have a few standardized properties: | |
998 | * | |
999 | * EDID: | |
1000 | * Blob property which contains the current EDID read from the sink. This | |
1001 | * is useful to parse sink identification information like vendor, model | |
1002 | * and serial. Drivers should update this property by calling | |
c555f023 | 1003 | * drm_connector_update_edid_property(), usually after having parsed |
4ada6f22 DV |
1004 | * the EDID using drm_add_edid_modes(). Userspace cannot change this |
1005 | * property. | |
12767469 SS |
1006 | * |
1007 | * User-space should not parse the EDID to obtain information exposed via | |
1008 | * other KMS properties (because the kernel might apply limits, quirks or | |
1009 | * fixups to the EDID). For instance, user-space should not try to parse | |
1010 | * mode lists from the EDID. | |
4ada6f22 DV |
1011 | * DPMS: |
1012 | * Legacy property for setting the power state of the connector. For atomic | |
1013 | * drivers this is only provided for backwards compatibility with existing | |
1014 | * drivers, it remaps to controlling the "ACTIVE" property on the CRTC the | |
1015 | * connector is linked to. Drivers should never set this property directly, | |
d574528a | 1016 | * it is handled by the DRM core by calling the &drm_connector_funcs.dpms |
144a7999 | 1017 | * callback. For atomic drivers the remapping to the "ACTIVE" property is |
1e3e4cae | 1018 | * implemented in the DRM core. |
d0d1aee5 DV |
1019 | * |
1020 | * Note that this property cannot be set through the MODE_ATOMIC ioctl, | |
1021 | * userspace must use "ACTIVE" on the CRTC instead. | |
1022 | * | |
1023 | * WARNING: | |
1024 | * | |
1025 | * For userspace also running on legacy drivers the "DPMS" semantics are a | |
1026 | * lot more complicated. First, userspace cannot rely on the "DPMS" value | |
1027 | * returned by the GETCONNECTOR actually reflecting reality, because many | |
1028 | * drivers fail to update it. For atomic drivers this is taken care of in | |
1029 | * drm_atomic_helper_update_legacy_modeset_state(). | |
1030 | * | |
1031 | * The second issue is that the DPMS state is only well-defined when the | |
1032 | * connector is connected to a CRTC. In atomic the DRM core enforces that | |
1033 | * "ACTIVE" is off in such a case, no such checks exists for "DPMS". | |
1034 | * | |
1035 | * Finally, when enabling an output using the legacy SETCONFIG ioctl then | |
1036 | * "DPMS" is forced to ON. But see above, that might not be reflected in | |
1037 | * the software value on legacy drivers. | |
1038 | * | |
1039 | * Summarizing: Only set "DPMS" when the connector is known to be enabled, | |
1040 | * assume that a successful SETCONFIG call also sets "DPMS" to on, and | |
1041 | * never read back the value of "DPMS" because it can be incorrect. | |
4ada6f22 DV |
1042 | * PATH: |
1043 | * Connector path property to identify how this sink is physically | |
1044 | * connected. Used by DP MST. This should be set by calling | |
97e14fbe | 1045 | * drm_connector_set_path_property(), in the case of DP MST with the |
4ada6f22 DV |
1046 | * path property the MST manager created. Userspace cannot change this |
1047 | * property. | |
1048 | * TILE: | |
1049 | * Connector tile group property to indicate how a set of DRM connector | |
1050 | * compose together into one logical screen. This is used by both high-res | |
1051 | * external screens (often only using a single cable, but exposing multiple | |
1052 | * DP MST sinks), or high-res integrated panels (like dual-link DSI) which | |
1053 | * are not gen-locked. Note that for tiled panels which are genlocked, like | |
1054 | * dual-link LVDS or dual-link DSI, the driver should try to not expose the | |
84e543bc | 1055 | * tiling and virtualise both &drm_crtc and &drm_plane if needed. Drivers |
97e14fbe | 1056 | * should update this value using drm_connector_set_tile_property(). |
4ada6f22 | 1057 | * Userspace cannot change this property. |
40ee6fbe | 1058 | * link-status: |
716719a3 SP |
1059 | * Connector link-status property to indicate the status of link. The |
1060 | * default value of link-status is "GOOD". If something fails during or | |
1061 | * after modeset, the kernel driver may set this to "BAD" and issue a | |
1062 | * hotplug uevent. Drivers should update this value using | |
97e14fbe | 1063 | * drm_connector_set_link_status_property(). |
a66da873 SS |
1064 | * |
1065 | * When user-space receives the hotplug uevent and detects a "BAD" | |
1066 | * link-status, the sink doesn't receive pixels anymore (e.g. the screen | |
1067 | * becomes completely black). The list of available modes may have | |
1068 | * changed. User-space is expected to pick a new mode if the current one | |
1069 | * has disappeared and perform a new modeset with link-status set to | |
1070 | * "GOOD" to re-enable the connector. | |
1071 | * | |
1072 | * If multiple connectors share the same CRTC and one of them gets a "BAD" | |
1073 | * link-status, the other are unaffected (ie. the sinks still continue to | |
1074 | * receive pixels). | |
1075 | * | |
1076 | * When user-space performs an atomic commit on a connector with a "BAD" | |
1077 | * link-status without resetting the property to "GOOD", the sink may | |
1078 | * still not receive pixels. When user-space performs an atomic commit | |
1079 | * which resets the link-status property to "GOOD" without the | |
1080 | * ALLOW_MODESET flag set, it might fail because a modeset is required. | |
1081 | * | |
1082 | * User-space can only change link-status to "GOOD", changing it to "BAD" | |
1083 | * is a no-op. | |
1084 | * | |
1085 | * For backwards compatibility with non-atomic userspace the kernel | |
1086 | * tries to automatically set the link-status back to "GOOD" in the | |
1087 | * SETCRTC IOCTL. This might fail if the mode is no longer valid, similar | |
1088 | * to how it might fail if a different screen has been connected in the | |
1089 | * interim. | |
66660d4c DA |
1090 | * non_desktop: |
1091 | * Indicates the output should be ignored for purposes of displaying a | |
1092 | * standard desktop environment or console. This is most likely because | |
1093 | * the output device is not rectilinear. | |
24557865 SP |
1094 | * Content Protection: |
1095 | * This property is used by userspace to request the kernel protect future | |
1096 | * content communicated over the link. When requested, kernel will apply | |
1097 | * the appropriate means of protection (most often HDCP), and use the | |
1098 | * property to tell userspace the protection is active. | |
1099 | * | |
1100 | * Drivers can set this up by calling | |
1101 | * drm_connector_attach_content_protection_property() on initialization. | |
1102 | * | |
1103 | * The value of this property can be one of the following: | |
1104 | * | |
bbeba09f | 1105 | * DRM_MODE_CONTENT_PROTECTION_UNDESIRED = 0 |
24557865 | 1106 | * The link is not protected, content is transmitted in the clear. |
bbeba09f | 1107 | * DRM_MODE_CONTENT_PROTECTION_DESIRED = 1 |
24557865 SP |
1108 | * Userspace has requested content protection, but the link is not |
1109 | * currently protected. When in this state, kernel should enable | |
1110 | * Content Protection as soon as possible. | |
bbeba09f | 1111 | * DRM_MODE_CONTENT_PROTECTION_ENABLED = 2 |
24557865 SP |
1112 | * Userspace has requested content protection, and the link is |
1113 | * protected. Only the driver can set the property to this value. | |
1114 | * If userspace attempts to set to ENABLED, kernel will return | |
1115 | * -EINVAL. | |
1116 | * | |
1117 | * A few guidelines: | |
1118 | * | |
1119 | * - DESIRED state should be preserved until userspace de-asserts it by | |
1120 | * setting the property to UNDESIRED. This means ENABLED should only | |
1121 | * transition to UNDESIRED when the user explicitly requests it. | |
1122 | * - If the state is DESIRED, kernel should attempt to re-authenticate the | |
1123 | * link whenever possible. This includes across disable/enable, dpms, | |
1124 | * hotplug, downstream device changes, link status failures, etc.. | |
bb5a45d4 R |
1125 | * - Kernel sends uevent with the connector id and property id through |
1126 | * @drm_hdcp_update_content_protection, upon below kernel triggered | |
1127 | * scenarios: | |
12db36bc SP |
1128 | * |
1129 | * - DESIRED -> ENABLED (authentication success) | |
1130 | * - ENABLED -> DESIRED (termination of authentication) | |
bb5a45d4 R |
1131 | * - Please note no uevents for userspace triggered property state changes, |
1132 | * which can't fail such as | |
12db36bc SP |
1133 | * |
1134 | * - DESIRED/ENABLED -> UNDESIRED | |
1135 | * - UNDESIRED -> DESIRED | |
bb5a45d4 R |
1136 | * - Userspace is responsible for polling the property or listen to uevents |
1137 | * to determine when the value transitions from ENABLED to DESIRED. | |
1138 | * This signifies the link is no longer protected and userspace should | |
1139 | * take appropriate action (whatever that might be). | |
4ada6f22 | 1140 | * |
7672dbba R |
1141 | * HDCP Content Type: |
1142 | * This Enum property is used by the userspace to declare the content type | |
1143 | * of the display stream, to kernel. Here display stream stands for any | |
1144 | * display content that userspace intended to display through HDCP | |
1145 | * encryption. | |
1146 | * | |
1147 | * Content Type of a stream is decided by the owner of the stream, as | |
1148 | * "HDCP Type0" or "HDCP Type1". | |
1149 | * | |
1150 | * The value of the property can be one of the below: | |
1151 | * - "HDCP Type0": DRM_MODE_HDCP_CONTENT_TYPE0 = 0 | |
1152 | * - "HDCP Type1": DRM_MODE_HDCP_CONTENT_TYPE1 = 1 | |
1153 | * | |
1154 | * When kernel starts the HDCP authentication (see "Content Protection" | |
1155 | * for details), it uses the content type in "HDCP Content Type" | |
1156 | * for performing the HDCP authentication with the display sink. | |
1157 | * | |
1158 | * Please note in HDCP spec versions, a link can be authenticated with | |
1159 | * HDCP 2.2 for Content Type 0/Content Type 1. Where as a link can be | |
1160 | * authenticated with HDCP1.4 only for Content Type 0(though it is implicit | |
1161 | * in nature. As there is no reference for Content Type in HDCP1.4). | |
1162 | * | |
1163 | * HDCP2.2 authentication protocol itself takes the "Content Type" as a | |
1164 | * parameter, which is a input for the DP HDCP2.2 encryption algo. | |
1165 | * | |
1166 | * In case of Type 0 content protection request, kernel driver can choose | |
1167 | * either of HDCP spec versions 1.4 and 2.2. When HDCP2.2 is used for | |
1168 | * "HDCP Type 0", a HDCP 2.2 capable repeater in the downstream can send | |
1169 | * that content to a HDCP 1.4 authenticated HDCP sink (Type0 link). | |
1170 | * But if the content is classified as "HDCP Type 1", above mentioned | |
1171 | * HDCP 2.2 repeater wont send the content to the HDCP sink as it can't | |
1172 | * authenticate the HDCP1.4 capable sink for "HDCP Type 1". | |
1173 | * | |
1174 | * Please note userspace can be ignorant of the HDCP versions used by the | |
1175 | * kernel driver to achieve the "HDCP Content Type". | |
1176 | * | |
1177 | * At current scenario, classifying a content as Type 1 ensures that the | |
1178 | * content will be displayed only through the HDCP2.2 encrypted link. | |
1179 | * | |
1180 | * Note that the HDCP Content Type property is introduced at HDCP 2.2, and | |
1181 | * defaults to type 0. It is only exposed by drivers supporting HDCP 2.2 | |
1182 | * (hence supporting Type 0 and Type 1). Based on how next versions of | |
1183 | * HDCP specs are defined content Type could be used for higher versions | |
1184 | * too. | |
1185 | * | |
1186 | * If content type is changed when "Content Protection" is not UNDESIRED, | |
1187 | * then kernel will disable the HDCP and re-enable with new type in the | |
1188 | * same atomic commit. And when "Content Protection" is ENABLED, it means | |
1189 | * that link is HDCP authenticated and encrypted, for the transmission of | |
1190 | * the Type of stream mentioned at "HDCP Content Type". | |
1191 | * | |
a09db883 US |
1192 | * HDR_OUTPUT_METADATA: |
1193 | * Connector property to enable userspace to send HDR Metadata to | |
1194 | * driver. This metadata is based on the composition and blending | |
1195 | * policies decided by user, taking into account the hardware and | |
1196 | * sink capabilities. The driver gets this metadata and creates a | |
1197 | * Dynamic Range and Mastering Infoframe (DRM) in case of HDMI, | |
1198 | * SDP packet (Non-audio INFOFRAME SDP v1.3) for DP. This is then | |
1199 | * sent to sink. This notifies the sink of the upcoming frame's Color | |
1200 | * Encoding and Luminance parameters. | |
1201 | * | |
1202 | * Userspace first need to detect the HDR capabilities of sink by | |
1203 | * reading and parsing the EDID. Details of HDR metadata for HDMI | |
1204 | * are added in CTA 861.G spec. For DP , its defined in VESA DP | |
1205 | * Standard v1.4. It needs to then get the metadata information | |
1206 | * of the video/game/app content which are encoded in HDR (basically | |
1207 | * using HDR transfer functions). With this information it needs to | |
1208 | * decide on a blending policy and compose the relevant | |
1209 | * layers/overlays into a common format. Once this blending is done, | |
1210 | * userspace will be aware of the metadata of the composed frame to | |
1211 | * be send to sink. It then uses this property to communicate this | |
1212 | * metadata to driver which then make a Infoframe packet and sends | |
1213 | * to sink based on the type of encoder connected. | |
1214 | * | |
1215 | * Userspace will be responsible to do Tone mapping operation in case: | |
1216 | * - Some layers are HDR and others are SDR | |
1217 | * - HDR layers luminance is not same as sink | |
9f9b2559 | 1218 | * |
a09db883 US |
1219 | * It will even need to do colorspace conversion and get all layers |
1220 | * to one common colorspace for blending. It can use either GL, Media | |
84e543bc | 1221 | * or display engine to get this done based on the capabilities of the |
a09db883 US |
1222 | * associated hardware. |
1223 | * | |
1224 | * Driver expects metadata to be put in &struct hdr_output_metadata | |
1225 | * structure from userspace. This is received as blob and stored in | |
1226 | * &drm_connector_state.hdr_output_metadata. It parses EDID and saves the | |
1227 | * sink metadata in &struct hdr_sink_metadata, as | |
1228 | * &drm_connector.hdr_sink_metadata. Driver uses | |
1229 | * drm_hdmi_infoframe_set_hdr_metadata() helper to set the HDR metadata, | |
1230 | * hdmi_drm_infoframe_pack() to pack the infoframe as per spec, in case of | |
1231 | * HDMI encoder. | |
1232 | * | |
47e22ff1 RS |
1233 | * max bpc: |
1234 | * This range property is used by userspace to limit the bit depth. When | |
1235 | * used the driver would limit the bpc in accordance with the valid range | |
1236 | * supported by the hardware and sink. Drivers to use the function | |
1237 | * drm_connector_attach_max_bpc_property() to create and attach the | |
1238 | * property to the connector during initialization. | |
1239 | * | |
4ada6f22 DV |
1240 | * Connectors also have one standardized atomic property: |
1241 | * | |
1242 | * CRTC_ID: | |
1243 | * Mode object ID of the &drm_crtc this connector should be connected to. | |
8d70f395 HG |
1244 | * |
1245 | * Connectors for LCD panels may also have one standardized property: | |
1246 | * | |
1247 | * panel orientation: | |
1248 | * On some devices the LCD panel is mounted in the casing in such a way | |
1249 | * that the up/top side of the panel does not match with the top side of | |
1250 | * the device. Userspace can use this property to check for this. | |
1251 | * Note that input coordinates from touchscreens (input devices with | |
1252 | * INPUT_PROP_DIRECT) will still map 1:1 to the actual LCD panel | |
1253 | * coordinates, so if userspace rotates the picture to adjust for | |
1254 | * the orientation it must also apply the same transformation to the | |
bbeba09f | 1255 | * touchscreen input coordinates. This property is initialized by calling |
69654c63 DB |
1256 | * drm_connector_set_panel_orientation() or |
1257 | * drm_connector_set_panel_orientation_with_quirk() | |
bbeba09f DV |
1258 | * |
1259 | * scaling mode: | |
1260 | * This property defines how a non-native mode is upscaled to the native | |
1261 | * mode of an LCD panel: | |
1262 | * | |
1263 | * None: | |
1264 | * No upscaling happens, scaling is left to the panel. Not all | |
1265 | * drivers expose this mode. | |
1266 | * Full: | |
1267 | * The output is upscaled to the full resolution of the panel, | |
1268 | * ignoring the aspect ratio. | |
1269 | * Center: | |
1270 | * No upscaling happens, the output is centered within the native | |
1271 | * resolution the panel. | |
1272 | * Full aspect: | |
1273 | * The output is upscaled to maximize either the width or height | |
1274 | * while retaining the aspect ratio. | |
1275 | * | |
1276 | * This property should be set up by calling | |
1277 | * drm_connector_attach_scaling_mode_property(). Note that drivers | |
1278 | * can also expose this property to external outputs, in which case they | |
1279 | * must support "None", which should be the default (since external screens | |
1280 | * have a built-in scaler). | |
e5b92773 OV |
1281 | * |
1282 | * subconnector: | |
1283 | * This property is used by DVI-I, TVout and DisplayPort to indicate different | |
1284 | * connector subtypes. Enum values more or less match with those from main | |
1285 | * connector types. | |
1286 | * For DVI-I and TVout there is also a matching property "select subconnector" | |
1287 | * allowing to switch between signal types. | |
1288 | * DP subconnector corresponds to a downstream port. | |
107fe904 RJ |
1289 | * |
1290 | * privacy-screen sw-state, privacy-screen hw-state: | |
1291 | * These 2 optional properties can be used to query the state of the | |
1292 | * electronic privacy screen that is available on some displays; and in | |
1293 | * some cases also control the state. If a driver implements these | |
1294 | * properties then both properties must be present. | |
1295 | * | |
1296 | * "privacy-screen hw-state" is read-only and reflects the actual state | |
1297 | * of the privacy-screen, possible values: "Enabled", "Disabled, | |
1298 | * "Enabled-locked", "Disabled-locked". The locked states indicate | |
1299 | * that the state cannot be changed through the DRM API. E.g. there | |
1300 | * might be devices where the firmware-setup options, or a hardware | |
1301 | * slider-switch, offer always on / off modes. | |
1302 | * | |
1303 | * "privacy-screen sw-state" can be set to change the privacy-screen state | |
1304 | * when not locked. In this case the driver must update the hw-state | |
1305 | * property to reflect the new state on completion of the commit of the | |
1306 | * sw-state property. Setting the sw-state property when the hw-state is | |
1307 | * locked must be interpreted by the driver as a request to change the | |
1308 | * state to the set state when the hw-state becomes unlocked. E.g. if | |
1309 | * "privacy-screen hw-state" is "Enabled-locked" and the sw-state | |
1310 | * gets set to "Disabled" followed by the user unlocking the state by | |
1311 | * changing the slider-switch position, then the driver must set the | |
1312 | * state to "Disabled" upon receiving the unlock event. | |
1313 | * | |
1314 | * In some cases the privacy-screen's actual state might change outside of | |
1315 | * control of the DRM code. E.g. there might be a firmware handled hotkey | |
1316 | * which toggles the actual state, or the actual state might be changed | |
1317 | * through another userspace API such as writing /proc/acpi/ibm/lcdshadow. | |
1318 | * In this case the driver must update both the hw-state and the sw-state | |
1319 | * to reflect the new value, overwriting any pending state requests in the | |
1320 | * sw-state. Any pending sw-state requests are thus discarded. | |
1321 | * | |
1322 | * Note that the ability for the state to change outside of control of | |
1323 | * the DRM master process means that userspace must not cache the value | |
1324 | * of the sw-state. Caching the sw-state value and including it in later | |
1325 | * atomic commits may lead to overriding a state change done through e.g. | |
1326 | * a firmware handled hotkey. Therefor userspace must not include the | |
1327 | * privacy-screen sw-state in an atomic commit unless it wants to change | |
1328 | * its value. | |
4ada6f22 DV |
1329 | */ |
1330 | ||
52217195 DV |
1331 | int drm_connector_create_standard_properties(struct drm_device *dev) |
1332 | { | |
1333 | struct drm_property *prop; | |
1334 | ||
1335 | prop = drm_property_create(dev, DRM_MODE_PROP_BLOB | | |
1336 | DRM_MODE_PROP_IMMUTABLE, | |
1337 | "EDID", 0); | |
1338 | if (!prop) | |
1339 | return -ENOMEM; | |
1340 | dev->mode_config.edid_property = prop; | |
1341 | ||
1342 | prop = drm_property_create_enum(dev, 0, | |
1343 | "DPMS", drm_dpms_enum_list, | |
1344 | ARRAY_SIZE(drm_dpms_enum_list)); | |
1345 | if (!prop) | |
1346 | return -ENOMEM; | |
1347 | dev->mode_config.dpms_property = prop; | |
1348 | ||
1349 | prop = drm_property_create(dev, | |
1350 | DRM_MODE_PROP_BLOB | | |
1351 | DRM_MODE_PROP_IMMUTABLE, | |
1352 | "PATH", 0); | |
1353 | if (!prop) | |
1354 | return -ENOMEM; | |
1355 | dev->mode_config.path_property = prop; | |
1356 | ||
1357 | prop = drm_property_create(dev, | |
1358 | DRM_MODE_PROP_BLOB | | |
1359 | DRM_MODE_PROP_IMMUTABLE, | |
1360 | "TILE", 0); | |
1361 | if (!prop) | |
1362 | return -ENOMEM; | |
1363 | dev->mode_config.tile_property = prop; | |
1364 | ||
40ee6fbe MN |
1365 | prop = drm_property_create_enum(dev, 0, "link-status", |
1366 | drm_link_status_enum_list, | |
1367 | ARRAY_SIZE(drm_link_status_enum_list)); | |
1368 | if (!prop) | |
1369 | return -ENOMEM; | |
1370 | dev->mode_config.link_status_property = prop; | |
1371 | ||
66660d4c DA |
1372 | prop = drm_property_create_bool(dev, DRM_MODE_PROP_IMMUTABLE, "non-desktop"); |
1373 | if (!prop) | |
1374 | return -ENOMEM; | |
1375 | dev->mode_config.non_desktop_property = prop; | |
1376 | ||
fbb5d035 US |
1377 | prop = drm_property_create(dev, DRM_MODE_PROP_BLOB, |
1378 | "HDR_OUTPUT_METADATA", 0); | |
1379 | if (!prop) | |
1380 | return -ENOMEM; | |
1381 | dev->mode_config.hdr_output_metadata_property = prop; | |
1382 | ||
52217195 DV |
1383 | return 0; |
1384 | } | |
1385 | ||
1386 | /** | |
1387 | * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties | |
1388 | * @dev: DRM device | |
1389 | * | |
1390 | * Called by a driver the first time a DVI-I connector is made. | |
f85d9e59 RD |
1391 | * |
1392 | * Returns: %0 | |
52217195 DV |
1393 | */ |
1394 | int drm_mode_create_dvi_i_properties(struct drm_device *dev) | |
1395 | { | |
1396 | struct drm_property *dvi_i_selector; | |
1397 | struct drm_property *dvi_i_subconnector; | |
1398 | ||
1399 | if (dev->mode_config.dvi_i_select_subconnector_property) | |
1400 | return 0; | |
1401 | ||
1402 | dvi_i_selector = | |
1403 | drm_property_create_enum(dev, 0, | |
1404 | "select subconnector", | |
1405 | drm_dvi_i_select_enum_list, | |
1406 | ARRAY_SIZE(drm_dvi_i_select_enum_list)); | |
1407 | dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector; | |
1408 | ||
1409 | dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, | |
1410 | "subconnector", | |
1411 | drm_dvi_i_subconnector_enum_list, | |
1412 | ARRAY_SIZE(drm_dvi_i_subconnector_enum_list)); | |
1413 | dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector; | |
1414 | ||
1415 | return 0; | |
1416 | } | |
1417 | EXPORT_SYMBOL(drm_mode_create_dvi_i_properties); | |
1418 | ||
e5b92773 OV |
1419 | /** |
1420 | * drm_connector_attach_dp_subconnector_property - create subconnector property for DP | |
1421 | * @connector: drm_connector to attach property | |
1422 | * | |
1423 | * Called by a driver when DP connector is created. | |
1424 | */ | |
1425 | void drm_connector_attach_dp_subconnector_property(struct drm_connector *connector) | |
1426 | { | |
1427 | struct drm_mode_config *mode_config = &connector->dev->mode_config; | |
1428 | ||
1429 | if (!mode_config->dp_subconnector_property) | |
1430 | mode_config->dp_subconnector_property = | |
1431 | drm_property_create_enum(connector->dev, | |
1432 | DRM_MODE_PROP_IMMUTABLE, | |
1433 | "subconnector", | |
1434 | drm_dp_subconnector_enum_list, | |
1435 | ARRAY_SIZE(drm_dp_subconnector_enum_list)); | |
1436 | ||
1437 | drm_object_attach_property(&connector->base, | |
1438 | mode_config->dp_subconnector_property, | |
1439 | DRM_MODE_SUBCONNECTOR_Unknown); | |
1440 | } | |
1441 | EXPORT_SYMBOL(drm_connector_attach_dp_subconnector_property); | |
1442 | ||
50525c33 SL |
1443 | /** |
1444 | * DOC: HDMI connector properties | |
1445 | * | |
1446 | * content type (HDMI specific): | |
1447 | * Indicates content type setting to be used in HDMI infoframes to indicate | |
1e55a53a | 1448 | * content type for the external device, so that it adjusts its display |
50525c33 SL |
1449 | * settings accordingly. |
1450 | * | |
1451 | * The value of this property can be one of the following: | |
1452 | * | |
1453 | * No Data: | |
1454 | * Content type is unknown | |
1455 | * Graphics: | |
1456 | * Content type is graphics | |
1457 | * Photo: | |
1458 | * Content type is photo | |
1459 | * Cinema: | |
1460 | * Content type is cinema | |
1461 | * Game: | |
1462 | * Content type is game | |
1463 | * | |
a0a33067 SS |
1464 | * The meaning of each content type is defined in CTA-861-G table 15. |
1465 | * | |
50525c33 SL |
1466 | * Drivers can set up this property by calling |
1467 | * drm_connector_attach_content_type_property(). Decoding to | |
ba609631 | 1468 | * infoframe values is done through drm_hdmi_avi_infoframe_content_type(). |
50525c33 SL |
1469 | */ |
1470 | ||
1471 | /** | |
1472 | * drm_connector_attach_content_type_property - attach content-type property | |
1473 | * @connector: connector to attach content type property on. | |
1474 | * | |
1475 | * Called by a driver the first time a HDMI connector is made. | |
f85d9e59 RD |
1476 | * |
1477 | * Returns: %0 | |
50525c33 SL |
1478 | */ |
1479 | int drm_connector_attach_content_type_property(struct drm_connector *connector) | |
1480 | { | |
1481 | if (!drm_mode_create_content_type_property(connector->dev)) | |
1482 | drm_object_attach_property(&connector->base, | |
1483 | connector->dev->mode_config.content_type_property, | |
1484 | DRM_MODE_CONTENT_TYPE_NO_DATA); | |
1485 | return 0; | |
1486 | } | |
1487 | EXPORT_SYMBOL(drm_connector_attach_content_type_property); | |
1488 | ||
1489 | ||
1490 | /** | |
1491 | * drm_hdmi_avi_infoframe_content_type() - fill the HDMI AVI infoframe | |
1492 | * content type information, based | |
1493 | * on correspondent DRM property. | |
1494 | * @frame: HDMI AVI infoframe | |
1495 | * @conn_state: DRM display connector state | |
1496 | * | |
1497 | */ | |
1498 | void drm_hdmi_avi_infoframe_content_type(struct hdmi_avi_infoframe *frame, | |
1499 | const struct drm_connector_state *conn_state) | |
1500 | { | |
1501 | switch (conn_state->content_type) { | |
1502 | case DRM_MODE_CONTENT_TYPE_GRAPHICS: | |
1503 | frame->content_type = HDMI_CONTENT_TYPE_GRAPHICS; | |
1504 | break; | |
1505 | case DRM_MODE_CONTENT_TYPE_CINEMA: | |
1506 | frame->content_type = HDMI_CONTENT_TYPE_CINEMA; | |
1507 | break; | |
1508 | case DRM_MODE_CONTENT_TYPE_GAME: | |
1509 | frame->content_type = HDMI_CONTENT_TYPE_GAME; | |
1510 | break; | |
1511 | case DRM_MODE_CONTENT_TYPE_PHOTO: | |
1512 | frame->content_type = HDMI_CONTENT_TYPE_PHOTO; | |
1513 | break; | |
1514 | default: | |
1515 | /* Graphics is the default(0) */ | |
1516 | frame->content_type = HDMI_CONTENT_TYPE_GRAPHICS; | |
1517 | } | |
1518 | ||
1519 | frame->itc = conn_state->content_type != DRM_MODE_CONTENT_TYPE_NO_DATA; | |
1520 | } | |
1521 | EXPORT_SYMBOL(drm_hdmi_avi_infoframe_content_type); | |
1522 | ||
52217195 | 1523 | /** |
e9d2871f MCC |
1524 | * drm_connector_attach_tv_margin_properties - attach TV connector margin |
1525 | * properties | |
6c4f52dc BB |
1526 | * @connector: DRM connector |
1527 | * | |
1528 | * Called by a driver when it needs to attach TV margin props to a connector. | |
1529 | * Typically used on SDTV and HDMI connectors. | |
1530 | */ | |
1531 | void drm_connector_attach_tv_margin_properties(struct drm_connector *connector) | |
1532 | { | |
1533 | struct drm_device *dev = connector->dev; | |
1534 | ||
1535 | drm_object_attach_property(&connector->base, | |
1536 | dev->mode_config.tv_left_margin_property, | |
1537 | 0); | |
1538 | drm_object_attach_property(&connector->base, | |
1539 | dev->mode_config.tv_right_margin_property, | |
1540 | 0); | |
1541 | drm_object_attach_property(&connector->base, | |
1542 | dev->mode_config.tv_top_margin_property, | |
1543 | 0); | |
1544 | drm_object_attach_property(&connector->base, | |
1545 | dev->mode_config.tv_bottom_margin_property, | |
1546 | 0); | |
1547 | } | |
1548 | EXPORT_SYMBOL(drm_connector_attach_tv_margin_properties); | |
1549 | ||
1550 | /** | |
1551 | * drm_mode_create_tv_margin_properties - create TV connector margin properties | |
1552 | * @dev: DRM device | |
1553 | * | |
1554 | * Called by a driver's HDMI connector initialization routine, this function | |
1555 | * creates the TV margin properties for a given device. No need to call this | |
1556 | * function for an SDTV connector, it's already called from | |
1557 | * drm_mode_create_tv_properties(). | |
f85d9e59 RD |
1558 | * |
1559 | * Returns: | |
1560 | * 0 on success or a negative error code on failure. | |
6c4f52dc BB |
1561 | */ |
1562 | int drm_mode_create_tv_margin_properties(struct drm_device *dev) | |
1563 | { | |
1564 | if (dev->mode_config.tv_left_margin_property) | |
1565 | return 0; | |
1566 | ||
1567 | dev->mode_config.tv_left_margin_property = | |
1568 | drm_property_create_range(dev, 0, "left margin", 0, 100); | |
1569 | if (!dev->mode_config.tv_left_margin_property) | |
1570 | return -ENOMEM; | |
1571 | ||
1572 | dev->mode_config.tv_right_margin_property = | |
1573 | drm_property_create_range(dev, 0, "right margin", 0, 100); | |
1574 | if (!dev->mode_config.tv_right_margin_property) | |
1575 | return -ENOMEM; | |
1576 | ||
1577 | dev->mode_config.tv_top_margin_property = | |
1578 | drm_property_create_range(dev, 0, "top margin", 0, 100); | |
1579 | if (!dev->mode_config.tv_top_margin_property) | |
1580 | return -ENOMEM; | |
1581 | ||
1582 | dev->mode_config.tv_bottom_margin_property = | |
1583 | drm_property_create_range(dev, 0, "bottom margin", 0, 100); | |
1584 | if (!dev->mode_config.tv_bottom_margin_property) | |
1585 | return -ENOMEM; | |
1586 | ||
1587 | return 0; | |
1588 | } | |
1589 | EXPORT_SYMBOL(drm_mode_create_tv_margin_properties); | |
1590 | ||
52217195 | 1591 | /** |
eda6887f | 1592 | * drm_mode_create_tv_properties - create TV specific connector properties |
52217195 DV |
1593 | * @dev: DRM device |
1594 | * @num_modes: number of different TV formats (modes) supported | |
1595 | * @modes: array of pointers to strings containing name of each format | |
1596 | * | |
1597 | * Called by a driver's TV initialization routine, this function creates | |
1598 | * the TV specific connector properties for a given device. Caller is | |
1599 | * responsible for allocating a list of format names and passing them to | |
1600 | * this routine. | |
f85d9e59 RD |
1601 | * |
1602 | * Returns: | |
1603 | * 0 on success or a negative error code on failure. | |
52217195 DV |
1604 | */ |
1605 | int drm_mode_create_tv_properties(struct drm_device *dev, | |
1606 | unsigned int num_modes, | |
1607 | const char * const modes[]) | |
1608 | { | |
1609 | struct drm_property *tv_selector; | |
1610 | struct drm_property *tv_subconnector; | |
1611 | unsigned int i; | |
1612 | ||
1613 | if (dev->mode_config.tv_select_subconnector_property) | |
1614 | return 0; | |
1615 | ||
1616 | /* | |
1617 | * Basic connector properties | |
1618 | */ | |
1619 | tv_selector = drm_property_create_enum(dev, 0, | |
1620 | "select subconnector", | |
1621 | drm_tv_select_enum_list, | |
1622 | ARRAY_SIZE(drm_tv_select_enum_list)); | |
1623 | if (!tv_selector) | |
1624 | goto nomem; | |
1625 | ||
1626 | dev->mode_config.tv_select_subconnector_property = tv_selector; | |
1627 | ||
1628 | tv_subconnector = | |
1629 | drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, | |
1630 | "subconnector", | |
1631 | drm_tv_subconnector_enum_list, | |
1632 | ARRAY_SIZE(drm_tv_subconnector_enum_list)); | |
1633 | if (!tv_subconnector) | |
1634 | goto nomem; | |
1635 | dev->mode_config.tv_subconnector_property = tv_subconnector; | |
1636 | ||
1637 | /* | |
1638 | * Other, TV specific properties: margins & TV modes. | |
1639 | */ | |
6c4f52dc | 1640 | if (drm_mode_create_tv_margin_properties(dev)) |
52217195 DV |
1641 | goto nomem; |
1642 | ||
1643 | dev->mode_config.tv_mode_property = | |
1644 | drm_property_create(dev, DRM_MODE_PROP_ENUM, | |
1645 | "mode", num_modes); | |
1646 | if (!dev->mode_config.tv_mode_property) | |
1647 | goto nomem; | |
1648 | ||
1649 | for (i = 0; i < num_modes; i++) | |
30e9db6d | 1650 | drm_property_add_enum(dev->mode_config.tv_mode_property, |
52217195 DV |
1651 | i, modes[i]); |
1652 | ||
1653 | dev->mode_config.tv_brightness_property = | |
1654 | drm_property_create_range(dev, 0, "brightness", 0, 100); | |
1655 | if (!dev->mode_config.tv_brightness_property) | |
1656 | goto nomem; | |
1657 | ||
1658 | dev->mode_config.tv_contrast_property = | |
1659 | drm_property_create_range(dev, 0, "contrast", 0, 100); | |
1660 | if (!dev->mode_config.tv_contrast_property) | |
1661 | goto nomem; | |
1662 | ||
1663 | dev->mode_config.tv_flicker_reduction_property = | |
1664 | drm_property_create_range(dev, 0, "flicker reduction", 0, 100); | |
1665 | if (!dev->mode_config.tv_flicker_reduction_property) | |
1666 | goto nomem; | |
1667 | ||
1668 | dev->mode_config.tv_overscan_property = | |
1669 | drm_property_create_range(dev, 0, "overscan", 0, 100); | |
1670 | if (!dev->mode_config.tv_overscan_property) | |
1671 | goto nomem; | |
1672 | ||
1673 | dev->mode_config.tv_saturation_property = | |
1674 | drm_property_create_range(dev, 0, "saturation", 0, 100); | |
1675 | if (!dev->mode_config.tv_saturation_property) | |
1676 | goto nomem; | |
1677 | ||
1678 | dev->mode_config.tv_hue_property = | |
1679 | drm_property_create_range(dev, 0, "hue", 0, 100); | |
1680 | if (!dev->mode_config.tv_hue_property) | |
1681 | goto nomem; | |
1682 | ||
1683 | return 0; | |
1684 | nomem: | |
1685 | return -ENOMEM; | |
1686 | } | |
1687 | EXPORT_SYMBOL(drm_mode_create_tv_properties); | |
1688 | ||
1689 | /** | |
1690 | * drm_mode_create_scaling_mode_property - create scaling mode property | |
1691 | * @dev: DRM device | |
1692 | * | |
1693 | * Called by a driver the first time it's needed, must be attached to desired | |
1694 | * connectors. | |
8f6e1e22 ML |
1695 | * |
1696 | * Atomic drivers should use drm_connector_attach_scaling_mode_property() | |
9c2fce13 | 1697 | * instead to correctly assign &drm_connector_state.scaling_mode |
8f6e1e22 | 1698 | * in the atomic state. |
f85d9e59 RD |
1699 | * |
1700 | * Returns: %0 | |
52217195 DV |
1701 | */ |
1702 | int drm_mode_create_scaling_mode_property(struct drm_device *dev) | |
1703 | { | |
1704 | struct drm_property *scaling_mode; | |
1705 | ||
1706 | if (dev->mode_config.scaling_mode_property) | |
1707 | return 0; | |
1708 | ||
1709 | scaling_mode = | |
1710 | drm_property_create_enum(dev, 0, "scaling mode", | |
1711 | drm_scaling_mode_enum_list, | |
1712 | ARRAY_SIZE(drm_scaling_mode_enum_list)); | |
1713 | ||
1714 | dev->mode_config.scaling_mode_property = scaling_mode; | |
1715 | ||
1716 | return 0; | |
1717 | } | |
1718 | EXPORT_SYMBOL(drm_mode_create_scaling_mode_property); | |
1719 | ||
ab7a664f NK |
1720 | /** |
1721 | * DOC: Variable refresh properties | |
1722 | * | |
1723 | * Variable refresh rate capable displays can dynamically adjust their | |
1724 | * refresh rate by extending the duration of their vertical front porch | |
1725 | * until page flip or timeout occurs. This can reduce or remove stuttering | |
1726 | * and latency in scenarios where the page flip does not align with the | |
1727 | * vblank interval. | |
1728 | * | |
1729 | * An example scenario would be an application flipping at a constant rate | |
1730 | * of 48Hz on a 60Hz display. The page flip will frequently miss the vblank | |
1731 | * interval and the same contents will be displayed twice. This can be | |
1732 | * observed as stuttering for content with motion. | |
1733 | * | |
1734 | * If variable refresh rate was active on a display that supported a | |
1735 | * variable refresh range from 35Hz to 60Hz no stuttering would be observable | |
1736 | * for the example scenario. The minimum supported variable refresh rate of | |
1737 | * 35Hz is below the page flip frequency and the vertical front porch can | |
1738 | * be extended until the page flip occurs. The vblank interval will be | |
1739 | * directly aligned to the page flip rate. | |
1740 | * | |
1741 | * Not all userspace content is suitable for use with variable refresh rate. | |
1742 | * Large and frequent changes in vertical front porch duration may worsen | |
1743 | * perceived stuttering for input sensitive applications. | |
1744 | * | |
1745 | * Panel brightness will also vary with vertical front porch duration. Some | |
1746 | * panels may have noticeable differences in brightness between the minimum | |
1747 | * vertical front porch duration and the maximum vertical front porch duration. | |
1748 | * Large and frequent changes in vertical front porch duration may produce | |
1749 | * observable flickering for such panels. | |
1750 | * | |
1751 | * Userspace control for variable refresh rate is supported via properties | |
1752 | * on the &drm_connector and &drm_crtc objects. | |
1753 | * | |
1754 | * "vrr_capable": | |
1755 | * Optional &drm_connector boolean property that drivers should attach | |
1756 | * with drm_connector_attach_vrr_capable_property() on connectors that | |
1757 | * could support variable refresh rates. Drivers should update the | |
1758 | * property value by calling drm_connector_set_vrr_capable_property(). | |
1759 | * | |
1760 | * Absence of the property should indicate absence of support. | |
1761 | * | |
77086014 | 1762 | * "VRR_ENABLED": |
ab7a664f NK |
1763 | * Default &drm_crtc boolean property that notifies the driver that the |
1764 | * content on the CRTC is suitable for variable refresh rate presentation. | |
1765 | * The driver will take this property as a hint to enable variable | |
1766 | * refresh rate support if the receiver supports it, ie. if the | |
1767 | * "vrr_capable" property is true on the &drm_connector object. The | |
1768 | * vertical front porch duration will be extended until page-flip or | |
1769 | * timeout when enabled. | |
1770 | * | |
1771 | * The minimum vertical front porch duration is defined as the vertical | |
1772 | * front porch duration for the current mode. | |
1773 | * | |
1774 | * The maximum vertical front porch duration is greater than or equal to | |
1775 | * the minimum vertical front porch duration. The duration is derived | |
1776 | * from the minimum supported variable refresh rate for the connector. | |
1777 | * | |
1778 | * The driver may place further restrictions within these minimum | |
1779 | * and maximum bounds. | |
ab7a664f NK |
1780 | */ |
1781 | ||
ba1b0f6c NK |
1782 | /** |
1783 | * drm_connector_attach_vrr_capable_property - creates the | |
1784 | * vrr_capable property | |
1785 | * @connector: connector to create the vrr_capable property on. | |
1786 | * | |
1787 | * This is used by atomic drivers to add support for querying | |
1788 | * variable refresh rate capability for a connector. | |
1789 | * | |
1790 | * Returns: | |
84e543bc | 1791 | * Zero on success, negative errno on failure. |
ba1b0f6c NK |
1792 | */ |
1793 | int drm_connector_attach_vrr_capable_property( | |
1794 | struct drm_connector *connector) | |
1795 | { | |
1796 | struct drm_device *dev = connector->dev; | |
1797 | struct drm_property *prop; | |
1798 | ||
1799 | if (!connector->vrr_capable_property) { | |
1800 | prop = drm_property_create_bool(dev, DRM_MODE_PROP_IMMUTABLE, | |
1801 | "vrr_capable"); | |
1802 | if (!prop) | |
1803 | return -ENOMEM; | |
1804 | ||
1805 | connector->vrr_capable_property = prop; | |
1806 | drm_object_attach_property(&connector->base, prop, 0); | |
1807 | } | |
1808 | ||
1809 | return 0; | |
1810 | } | |
1811 | EXPORT_SYMBOL(drm_connector_attach_vrr_capable_property); | |
1812 | ||
8f6e1e22 ML |
1813 | /** |
1814 | * drm_connector_attach_scaling_mode_property - attach atomic scaling mode property | |
1815 | * @connector: connector to attach scaling mode property on. | |
1816 | * @scaling_mode_mask: or'ed mask of BIT(%DRM_MODE_SCALE_\*). | |
1817 | * | |
1818 | * This is used to add support for scaling mode to atomic drivers. | |
9c2fce13 | 1819 | * The scaling mode will be set to &drm_connector_state.scaling_mode |
8f6e1e22 ML |
1820 | * and can be used from &drm_connector_helper_funcs->atomic_check for validation. |
1821 | * | |
1822 | * This is the atomic version of drm_mode_create_scaling_mode_property(). | |
1823 | * | |
1824 | * Returns: | |
1825 | * Zero on success, negative errno on failure. | |
1826 | */ | |
1827 | int drm_connector_attach_scaling_mode_property(struct drm_connector *connector, | |
1828 | u32 scaling_mode_mask) | |
1829 | { | |
1830 | struct drm_device *dev = connector->dev; | |
1831 | struct drm_property *scaling_mode_property; | |
30e9db6d | 1832 | int i; |
8f6e1e22 ML |
1833 | const unsigned valid_scaling_mode_mask = |
1834 | (1U << ARRAY_SIZE(drm_scaling_mode_enum_list)) - 1; | |
1835 | ||
1836 | if (WARN_ON(hweight32(scaling_mode_mask) < 2 || | |
1837 | scaling_mode_mask & ~valid_scaling_mode_mask)) | |
1838 | return -EINVAL; | |
1839 | ||
1840 | scaling_mode_property = | |
1841 | drm_property_create(dev, DRM_MODE_PROP_ENUM, "scaling mode", | |
1842 | hweight32(scaling_mode_mask)); | |
1843 | ||
1844 | if (!scaling_mode_property) | |
1845 | return -ENOMEM; | |
1846 | ||
1847 | for (i = 0; i < ARRAY_SIZE(drm_scaling_mode_enum_list); i++) { | |
1848 | int ret; | |
1849 | ||
1850 | if (!(BIT(i) & scaling_mode_mask)) | |
1851 | continue; | |
1852 | ||
30e9db6d | 1853 | ret = drm_property_add_enum(scaling_mode_property, |
8f6e1e22 ML |
1854 | drm_scaling_mode_enum_list[i].type, |
1855 | drm_scaling_mode_enum_list[i].name); | |
1856 | ||
1857 | if (ret) { | |
1858 | drm_property_destroy(dev, scaling_mode_property); | |
1859 | ||
1860 | return ret; | |
1861 | } | |
1862 | } | |
1863 | ||
1864 | drm_object_attach_property(&connector->base, | |
1865 | scaling_mode_property, 0); | |
1866 | ||
1867 | connector->scaling_mode_property = scaling_mode_property; | |
1868 | ||
1869 | return 0; | |
1870 | } | |
1871 | EXPORT_SYMBOL(drm_connector_attach_scaling_mode_property); | |
1872 | ||
52217195 DV |
1873 | /** |
1874 | * drm_mode_create_aspect_ratio_property - create aspect ratio property | |
1875 | * @dev: DRM device | |
1876 | * | |
1877 | * Called by a driver the first time it's needed, must be attached to desired | |
1878 | * connectors. | |
1879 | * | |
1880 | * Returns: | |
1881 | * Zero on success, negative errno on failure. | |
1882 | */ | |
1883 | int drm_mode_create_aspect_ratio_property(struct drm_device *dev) | |
1884 | { | |
1885 | if (dev->mode_config.aspect_ratio_property) | |
1886 | return 0; | |
1887 | ||
1888 | dev->mode_config.aspect_ratio_property = | |
1889 | drm_property_create_enum(dev, 0, "aspect ratio", | |
1890 | drm_aspect_ratio_enum_list, | |
1891 | ARRAY_SIZE(drm_aspect_ratio_enum_list)); | |
1892 | ||
1893 | if (dev->mode_config.aspect_ratio_property == NULL) | |
1894 | return -ENOMEM; | |
1895 | ||
1896 | return 0; | |
1897 | } | |
1898 | EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property); | |
1899 | ||
d2c6a405 US |
1900 | /** |
1901 | * DOC: standard connector properties | |
1902 | * | |
1903 | * Colorspace: | |
d2c6a405 US |
1904 | * This property helps select a suitable colorspace based on the sink |
1905 | * capability. Modern sink devices support wider gamut like BT2020. | |
1906 | * This helps switch to BT2020 mode if the BT2020 encoded video stream | |
1907 | * is being played by the user, same for any other colorspace. Thereby | |
1908 | * giving a good visual experience to users. | |
1909 | * | |
1910 | * The expectation from userspace is that it should parse the EDID | |
1911 | * and get supported colorspaces. Use this property and switch to the | |
1912 | * one supported. Sink supported colorspaces should be retrieved by | |
1913 | * userspace from EDID and driver will not explicitly expose them. | |
1914 | * | |
1915 | * Basically the expectation from userspace is: | |
1916 | * - Set up CRTC DEGAMMA/CTM/GAMMA to convert to some sink | |
1917 | * colorspace | |
1918 | * - Set this new property to let the sink know what it | |
1919 | * converted the CRTC output to. | |
1920 | * - This property is just to inform sink what colorspace | |
1921 | * source is trying to drive. | |
1922 | * | |
8806cd3a | 1923 | * Because between HDMI and DP have different colorspaces, |
45cf0e91 GM |
1924 | * drm_mode_create_hdmi_colorspace_property() is used for HDMI connector and |
1925 | * drm_mode_create_dp_colorspace_property() is used for DP connector. | |
8806cd3a GM |
1926 | */ |
1927 | ||
1928 | /** | |
1929 | * drm_mode_create_hdmi_colorspace_property - create hdmi colorspace property | |
1930 | * @connector: connector to create the Colorspace property on. | |
1931 | * | |
d2c6a405 | 1932 | * Called by a driver the first time it's needed, must be attached to desired |
8806cd3a GM |
1933 | * HDMI connectors. |
1934 | * | |
1935 | * Returns: | |
84e543bc | 1936 | * Zero on success, negative errno on failure. |
d2c6a405 | 1937 | */ |
8806cd3a | 1938 | int drm_mode_create_hdmi_colorspace_property(struct drm_connector *connector) |
d2c6a405 US |
1939 | { |
1940 | struct drm_device *dev = connector->dev; | |
d2c6a405 | 1941 | |
8806cd3a | 1942 | if (connector->colorspace_property) |
d2c6a405 | 1943 | return 0; |
d2c6a405 | 1944 | |
8806cd3a GM |
1945 | connector->colorspace_property = |
1946 | drm_property_create_enum(dev, DRM_MODE_PROP_ENUM, "Colorspace", | |
1947 | hdmi_colorspaces, | |
1948 | ARRAY_SIZE(hdmi_colorspaces)); | |
1949 | ||
1950 | if (!connector->colorspace_property) | |
1951 | return -ENOMEM; | |
d2c6a405 US |
1952 | |
1953 | return 0; | |
1954 | } | |
8806cd3a | 1955 | EXPORT_SYMBOL(drm_mode_create_hdmi_colorspace_property); |
d2c6a405 | 1956 | |
45cf0e91 GM |
1957 | /** |
1958 | * drm_mode_create_dp_colorspace_property - create dp colorspace property | |
1959 | * @connector: connector to create the Colorspace property on. | |
1960 | * | |
1961 | * Called by a driver the first time it's needed, must be attached to desired | |
1962 | * DP connectors. | |
1963 | * | |
1964 | * Returns: | |
84e543bc | 1965 | * Zero on success, negative errno on failure. |
45cf0e91 GM |
1966 | */ |
1967 | int drm_mode_create_dp_colorspace_property(struct drm_connector *connector) | |
1968 | { | |
1969 | struct drm_device *dev = connector->dev; | |
1970 | ||
1971 | if (connector->colorspace_property) | |
1972 | return 0; | |
1973 | ||
1974 | connector->colorspace_property = | |
1975 | drm_property_create_enum(dev, DRM_MODE_PROP_ENUM, "Colorspace", | |
1976 | dp_colorspaces, | |
1977 | ARRAY_SIZE(dp_colorspaces)); | |
1978 | ||
1979 | if (!connector->colorspace_property) | |
1980 | return -ENOMEM; | |
d2c6a405 US |
1981 | |
1982 | return 0; | |
1983 | } | |
45cf0e91 | 1984 | EXPORT_SYMBOL(drm_mode_create_dp_colorspace_property); |
d2c6a405 | 1985 | |
50525c33 SL |
1986 | /** |
1987 | * drm_mode_create_content_type_property - create content type property | |
1988 | * @dev: DRM device | |
1989 | * | |
1990 | * Called by a driver the first time it's needed, must be attached to desired | |
1991 | * connectors. | |
1992 | * | |
1993 | * Returns: | |
1994 | * Zero on success, negative errno on failure. | |
1995 | */ | |
1996 | int drm_mode_create_content_type_property(struct drm_device *dev) | |
1997 | { | |
1998 | if (dev->mode_config.content_type_property) | |
1999 | return 0; | |
2000 | ||
2001 | dev->mode_config.content_type_property = | |
2002 | drm_property_create_enum(dev, 0, "content type", | |
2003 | drm_content_type_enum_list, | |
2004 | ARRAY_SIZE(drm_content_type_enum_list)); | |
2005 | ||
2006 | if (dev->mode_config.content_type_property == NULL) | |
2007 | return -ENOMEM; | |
2008 | ||
2009 | return 0; | |
2010 | } | |
2011 | EXPORT_SYMBOL(drm_mode_create_content_type_property); | |
2012 | ||
52217195 DV |
2013 | /** |
2014 | * drm_mode_create_suggested_offset_properties - create suggests offset properties | |
2015 | * @dev: DRM device | |
2016 | * | |
84e543bc | 2017 | * Create the suggested x/y offset property for connectors. |
f85d9e59 RD |
2018 | * |
2019 | * Returns: | |
2020 | * 0 on success or a negative error code on failure. | |
52217195 DV |
2021 | */ |
2022 | int drm_mode_create_suggested_offset_properties(struct drm_device *dev) | |
2023 | { | |
2024 | if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property) | |
2025 | return 0; | |
2026 | ||
2027 | dev->mode_config.suggested_x_property = | |
2028 | drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff); | |
2029 | ||
2030 | dev->mode_config.suggested_y_property = | |
2031 | drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff); | |
2032 | ||
2033 | if (dev->mode_config.suggested_x_property == NULL || | |
2034 | dev->mode_config.suggested_y_property == NULL) | |
2035 | return -ENOMEM; | |
2036 | return 0; | |
2037 | } | |
2038 | EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties); | |
2039 | ||
2040 | /** | |
97e14fbe | 2041 | * drm_connector_set_path_property - set tile property on connector |
52217195 DV |
2042 | * @connector: connector to set property on. |
2043 | * @path: path to use for property; must not be NULL. | |
2044 | * | |
2045 | * This creates a property to expose to userspace to specify a | |
2046 | * connector path. This is mainly used for DisplayPort MST where | |
2047 | * connectors have a topology and we want to allow userspace to give | |
2048 | * them more meaningful names. | |
2049 | * | |
2050 | * Returns: | |
2051 | * Zero on success, negative errno on failure. | |
2052 | */ | |
97e14fbe DV |
2053 | int drm_connector_set_path_property(struct drm_connector *connector, |
2054 | const char *path) | |
52217195 DV |
2055 | { |
2056 | struct drm_device *dev = connector->dev; | |
2057 | int ret; | |
2058 | ||
2059 | ret = drm_property_replace_global_blob(dev, | |
c83b5eef BMC |
2060 | &connector->path_blob_ptr, |
2061 | strlen(path) + 1, | |
2062 | path, | |
2063 | &connector->base, | |
2064 | dev->mode_config.path_property); | |
52217195 DV |
2065 | return ret; |
2066 | } | |
97e14fbe | 2067 | EXPORT_SYMBOL(drm_connector_set_path_property); |
52217195 DV |
2068 | |
2069 | /** | |
97e14fbe | 2070 | * drm_connector_set_tile_property - set tile property on connector |
52217195 DV |
2071 | * @connector: connector to set property on. |
2072 | * | |
2073 | * This looks up the tile information for a connector, and creates a | |
2074 | * property for userspace to parse if it exists. The property is of | |
2075 | * the form of 8 integers using ':' as a separator. | |
2de3a078 MN |
2076 | * This is used for dual port tiled displays with DisplayPort SST |
2077 | * or DisplayPort MST connectors. | |
52217195 DV |
2078 | * |
2079 | * Returns: | |
2080 | * Zero on success, errno on failure. | |
2081 | */ | |
97e14fbe | 2082 | int drm_connector_set_tile_property(struct drm_connector *connector) |
52217195 DV |
2083 | { |
2084 | struct drm_device *dev = connector->dev; | |
2085 | char tile[256]; | |
2086 | int ret; | |
2087 | ||
2088 | if (!connector->has_tile) { | |
2089 | ret = drm_property_replace_global_blob(dev, | |
c83b5eef BMC |
2090 | &connector->tile_blob_ptr, |
2091 | 0, | |
2092 | NULL, | |
2093 | &connector->base, | |
2094 | dev->mode_config.tile_property); | |
52217195 DV |
2095 | return ret; |
2096 | } | |
2097 | ||
2098 | snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d", | |
2099 | connector->tile_group->id, connector->tile_is_single_monitor, | |
2100 | connector->num_h_tile, connector->num_v_tile, | |
2101 | connector->tile_h_loc, connector->tile_v_loc, | |
2102 | connector->tile_h_size, connector->tile_v_size); | |
2103 | ||
2104 | ret = drm_property_replace_global_blob(dev, | |
c83b5eef BMC |
2105 | &connector->tile_blob_ptr, |
2106 | strlen(tile) + 1, | |
2107 | tile, | |
2108 | &connector->base, | |
2109 | dev->mode_config.tile_property); | |
52217195 DV |
2110 | return ret; |
2111 | } | |
97e14fbe | 2112 | EXPORT_SYMBOL(drm_connector_set_tile_property); |
52217195 DV |
2113 | |
2114 | /** | |
c555f023 | 2115 | * drm_connector_update_edid_property - update the edid property of a connector |
52217195 DV |
2116 | * @connector: drm connector |
2117 | * @edid: new value of the edid property | |
2118 | * | |
2119 | * This function creates a new blob modeset object and assigns its id to the | |
2120 | * connector's edid property. | |
2de3a078 MN |
2121 | * Since we also parse tile information from EDID's displayID block, we also |
2122 | * set the connector's tile property here. See drm_connector_set_tile_property() | |
2123 | * for more details. | |
52217195 DV |
2124 | * |
2125 | * Returns: | |
2126 | * Zero on success, negative errno on failure. | |
2127 | */ | |
c555f023 | 2128 | int drm_connector_update_edid_property(struct drm_connector *connector, |
97e14fbe | 2129 | const struct edid *edid) |
52217195 DV |
2130 | { |
2131 | struct drm_device *dev = connector->dev; | |
2132 | size_t size = 0; | |
2133 | int ret; | |
5186421c | 2134 | const struct edid *old_edid; |
52217195 DV |
2135 | |
2136 | /* ignore requests to set edid when overridden */ | |
2137 | if (connector->override_edid) | |
2138 | return 0; | |
2139 | ||
2140 | if (edid) | |
2141 | size = EDID_LENGTH * (1 + edid->extensions); | |
2142 | ||
170178fe | 2143 | /* Set the display info, using edid if available, otherwise |
84e543bc | 2144 | * resetting the values to defaults. This duplicates the work |
170178fe KP |
2145 | * done in drm_add_edid_modes, but that function is not |
2146 | * consistently called before this one in all drivers and the | |
2147 | * computation is cheap enough that it seems better to | |
2148 | * duplicate it rather than attempt to ensure some arbitrary | |
2149 | * ordering of calls. | |
2150 | */ | |
2151 | if (edid) | |
2152 | drm_add_display_info(connector, edid); | |
2153 | else | |
2154 | drm_reset_display_info(connector); | |
2155 | ||
092c367a VS |
2156 | drm_update_tile_info(connector, edid); |
2157 | ||
5186421c SL |
2158 | if (connector->edid_blob_ptr) { |
2159 | old_edid = (const struct edid *)connector->edid_blob_ptr->data; | |
2160 | if (old_edid) { | |
2161 | if (!drm_edid_are_equal(edid, old_edid)) { | |
2162 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] Edid was changed.\n", | |
2163 | connector->base.id, connector->name); | |
2164 | ||
2165 | connector->epoch_counter += 1; | |
2166 | DRM_DEBUG_KMS("Updating change counter to %llu\n", | |
2167 | connector->epoch_counter); | |
2168 | } | |
2169 | } | |
2170 | } | |
2171 | ||
66660d4c DA |
2172 | drm_object_property_set_value(&connector->base, |
2173 | dev->mode_config.non_desktop_property, | |
2174 | connector->display_info.non_desktop); | |
2175 | ||
52217195 DV |
2176 | ret = drm_property_replace_global_blob(dev, |
2177 | &connector->edid_blob_ptr, | |
c83b5eef BMC |
2178 | size, |
2179 | edid, | |
2180 | &connector->base, | |
2181 | dev->mode_config.edid_property); | |
2de3a078 MN |
2182 | if (ret) |
2183 | return ret; | |
2184 | return drm_connector_set_tile_property(connector); | |
52217195 | 2185 | } |
c555f023 | 2186 | EXPORT_SYMBOL(drm_connector_update_edid_property); |
52217195 | 2187 | |
40ee6fbe | 2188 | /** |
97e14fbe | 2189 | * drm_connector_set_link_status_property - Set link status property of a connector |
40ee6fbe MN |
2190 | * @connector: drm connector |
2191 | * @link_status: new value of link status property (0: Good, 1: Bad) | |
2192 | * | |
2193 | * In usual working scenario, this link status property will always be set to | |
2194 | * "GOOD". If something fails during or after a mode set, the kernel driver | |
2195 | * may set this link status property to "BAD". The caller then needs to send a | |
2196 | * hotplug uevent for userspace to re-check the valid modes through | |
2197 | * GET_CONNECTOR_IOCTL and retry modeset. | |
2198 | * | |
2199 | * Note: Drivers cannot rely on userspace to support this property and | |
2200 | * issue a modeset. As such, they may choose to handle issues (like | |
2201 | * re-training a link) without userspace's intervention. | |
2202 | * | |
2203 | * The reason for adding this property is to handle link training failures, but | |
2204 | * it is not limited to DP or link training. For example, if we implement | |
2205 | * asynchronous setcrtc, this property can be used to report any failures in that. | |
2206 | */ | |
97e14fbe DV |
2207 | void drm_connector_set_link_status_property(struct drm_connector *connector, |
2208 | uint64_t link_status) | |
40ee6fbe MN |
2209 | { |
2210 | struct drm_device *dev = connector->dev; | |
2211 | ||
2212 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); | |
2213 | connector->state->link_status = link_status; | |
2214 | drm_modeset_unlock(&dev->mode_config.connection_mutex); | |
2215 | } | |
97e14fbe | 2216 | EXPORT_SYMBOL(drm_connector_set_link_status_property); |
40ee6fbe | 2217 | |
47e22ff1 RS |
2218 | /** |
2219 | * drm_connector_attach_max_bpc_property - attach "max bpc" property | |
2220 | * @connector: connector to attach max bpc property on. | |
2221 | * @min: The minimum bit depth supported by the connector. | |
2222 | * @max: The maximum bit depth supported by the connector. | |
2223 | * | |
2224 | * This is used to add support for limiting the bit depth on a connector. | |
2225 | * | |
2226 | * Returns: | |
2227 | * Zero on success, negative errno on failure. | |
2228 | */ | |
2229 | int drm_connector_attach_max_bpc_property(struct drm_connector *connector, | |
2230 | int min, int max) | |
2231 | { | |
2232 | struct drm_device *dev = connector->dev; | |
2233 | struct drm_property *prop; | |
2234 | ||
2235 | prop = connector->max_bpc_property; | |
2236 | if (!prop) { | |
2237 | prop = drm_property_create_range(dev, 0, "max bpc", min, max); | |
2238 | if (!prop) | |
2239 | return -ENOMEM; | |
2240 | ||
2241 | connector->max_bpc_property = prop; | |
2242 | } | |
2243 | ||
2244 | drm_object_attach_property(&connector->base, prop, max); | |
2245 | connector->state->max_requested_bpc = max; | |
2246 | connector->state->max_bpc = max; | |
2247 | ||
2248 | return 0; | |
2249 | } | |
2250 | EXPORT_SYMBOL(drm_connector_attach_max_bpc_property); | |
2251 | ||
e057b52c MR |
2252 | /** |
2253 | * drm_connector_attach_hdr_output_metadata_property - attach "HDR_OUTPUT_METADA" property | |
2254 | * @connector: connector to attach the property on. | |
2255 | * | |
2256 | * This is used to allow the userspace to send HDR Metadata to the | |
2257 | * driver. | |
2258 | * | |
2259 | * Returns: | |
2260 | * Zero on success, negative errno on failure. | |
2261 | */ | |
2262 | int drm_connector_attach_hdr_output_metadata_property(struct drm_connector *connector) | |
2263 | { | |
2264 | struct drm_device *dev = connector->dev; | |
2265 | struct drm_property *prop = dev->mode_config.hdr_output_metadata_property; | |
2266 | ||
2267 | drm_object_attach_property(&connector->base, prop, 0); | |
2268 | ||
2269 | return 0; | |
2270 | } | |
2271 | EXPORT_SYMBOL(drm_connector_attach_hdr_output_metadata_property); | |
2272 | ||
21f79128 MR |
2273 | /** |
2274 | * drm_connector_attach_colorspace_property - attach "Colorspace" property | |
2275 | * @connector: connector to attach the property on. | |
2276 | * | |
2277 | * This is used to allow the userspace to signal the output colorspace | |
2278 | * to the driver. | |
2279 | * | |
2280 | * Returns: | |
2281 | * Zero on success, negative errno on failure. | |
2282 | */ | |
2283 | int drm_connector_attach_colorspace_property(struct drm_connector *connector) | |
2284 | { | |
2285 | struct drm_property *prop = connector->colorspace_property; | |
2286 | ||
2287 | drm_object_attach_property(&connector->base, prop, DRM_MODE_COLORIMETRY_DEFAULT); | |
2288 | ||
2289 | return 0; | |
2290 | } | |
2291 | EXPORT_SYMBOL(drm_connector_attach_colorspace_property); | |
2292 | ||
72921cdf MR |
2293 | /** |
2294 | * drm_connector_atomic_hdr_metadata_equal - checks if the hdr metadata changed | |
2295 | * @old_state: old connector state to compare | |
2296 | * @new_state: new connector state to compare | |
2297 | * | |
2298 | * This is used by HDR-enabled drivers to test whether the HDR metadata | |
2299 | * have changed between two different connector state (and thus probably | |
2300 | * requires a full blown mode change). | |
2301 | * | |
2302 | * Returns: | |
2303 | * True if the metadata are equal, False otherwise | |
2304 | */ | |
2305 | bool drm_connector_atomic_hdr_metadata_equal(struct drm_connector_state *old_state, | |
2306 | struct drm_connector_state *new_state) | |
2307 | { | |
2308 | struct drm_property_blob *old_blob = old_state->hdr_output_metadata; | |
2309 | struct drm_property_blob *new_blob = new_state->hdr_output_metadata; | |
2310 | ||
2311 | if (!old_blob || !new_blob) | |
2312 | return old_blob == new_blob; | |
2313 | ||
2314 | if (old_blob->length != new_blob->length) | |
2315 | return false; | |
2316 | ||
2317 | return !memcmp(old_blob->data, new_blob->data, old_blob->length); | |
2318 | } | |
2319 | EXPORT_SYMBOL(drm_connector_atomic_hdr_metadata_equal); | |
2320 | ||
ba1b0f6c NK |
2321 | /** |
2322 | * drm_connector_set_vrr_capable_property - sets the variable refresh rate | |
2323 | * capable property for a connector | |
2324 | * @connector: drm connector | |
2325 | * @capable: True if the connector is variable refresh rate capable | |
2326 | * | |
2327 | * Should be used by atomic drivers to update the indicated support for | |
2328 | * variable refresh rate over a connector. | |
2329 | */ | |
2330 | void drm_connector_set_vrr_capable_property( | |
2331 | struct drm_connector *connector, bool capable) | |
2332 | { | |
2333 | drm_object_property_set_value(&connector->base, | |
2334 | connector->vrr_capable_property, | |
2335 | capable); | |
2336 | } | |
2337 | EXPORT_SYMBOL(drm_connector_set_vrr_capable_property); | |
2338 | ||
8d70f395 | 2339 | /** |
84e543bc | 2340 | * drm_connector_set_panel_orientation - sets the connector's panel_orientation |
69654c63 DB |
2341 | * @connector: connector for which to set the panel-orientation property. |
2342 | * @panel_orientation: drm_panel_orientation value to set | |
2343 | * | |
2344 | * This function sets the connector's panel_orientation and attaches | |
2345 | * a "panel orientation" property to the connector. | |
8d70f395 | 2346 | * |
69654c63 DB |
2347 | * Calling this function on a connector where the panel_orientation has |
2348 | * already been set is a no-op (e.g. the orientation has been overridden with | |
2349 | * a kernel commandline option). | |
8d70f395 | 2350 | * |
69654c63 DB |
2351 | * It is allowed to call this function with a panel_orientation of |
2352 | * DRM_MODE_PANEL_ORIENTATION_UNKNOWN, in which case it is a no-op. | |
8d70f395 HG |
2353 | * |
2354 | * Returns: | |
2355 | * Zero on success, negative errno on failure. | |
2356 | */ | |
69654c63 DB |
2357 | int drm_connector_set_panel_orientation( |
2358 | struct drm_connector *connector, | |
2359 | enum drm_panel_orientation panel_orientation) | |
8d70f395 HG |
2360 | { |
2361 | struct drm_device *dev = connector->dev; | |
2362 | struct drm_display_info *info = &connector->display_info; | |
2363 | struct drm_property *prop; | |
8d70f395 | 2364 | |
69654c63 DB |
2365 | /* Already set? */ |
2366 | if (info->panel_orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN) | |
2367 | return 0; | |
8d70f395 | 2368 | |
69654c63 DB |
2369 | /* Don't attach the property if the orientation is unknown */ |
2370 | if (panel_orientation == DRM_MODE_PANEL_ORIENTATION_UNKNOWN) | |
8d70f395 HG |
2371 | return 0; |
2372 | ||
69654c63 DB |
2373 | info->panel_orientation = panel_orientation; |
2374 | ||
8d70f395 HG |
2375 | prop = dev->mode_config.panel_orientation_property; |
2376 | if (!prop) { | |
2377 | prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, | |
2378 | "panel orientation", | |
2379 | drm_panel_orientation_enum_list, | |
2380 | ARRAY_SIZE(drm_panel_orientation_enum_list)); | |
2381 | if (!prop) | |
2382 | return -ENOMEM; | |
2383 | ||
2384 | dev->mode_config.panel_orientation_property = prop; | |
2385 | } | |
2386 | ||
2387 | drm_object_attach_property(&connector->base, prop, | |
2388 | info->panel_orientation); | |
2389 | return 0; | |
2390 | } | |
69654c63 DB |
2391 | EXPORT_SYMBOL(drm_connector_set_panel_orientation); |
2392 | ||
2393 | /** | |
f85d9e59 RD |
2394 | * drm_connector_set_panel_orientation_with_quirk - set the |
2395 | * connector's panel_orientation after checking for quirks | |
69654c63 DB |
2396 | * @connector: connector for which to init the panel-orientation property. |
2397 | * @panel_orientation: drm_panel_orientation value to set | |
2398 | * @width: width in pixels of the panel, used for panel quirk detection | |
2399 | * @height: height in pixels of the panel, used for panel quirk detection | |
2400 | * | |
2401 | * Like drm_connector_set_panel_orientation(), but with a check for platform | |
2402 | * specific (e.g. DMI based) quirks overriding the passed in panel_orientation. | |
2403 | * | |
2404 | * Returns: | |
2405 | * Zero on success, negative errno on failure. | |
2406 | */ | |
2407 | int drm_connector_set_panel_orientation_with_quirk( | |
2408 | struct drm_connector *connector, | |
2409 | enum drm_panel_orientation panel_orientation, | |
2410 | int width, int height) | |
2411 | { | |
2412 | int orientation_quirk; | |
2413 | ||
2414 | orientation_quirk = drm_get_panel_orientation_quirk(width, height); | |
2415 | if (orientation_quirk != DRM_MODE_PANEL_ORIENTATION_UNKNOWN) | |
2416 | panel_orientation = orientation_quirk; | |
2417 | ||
2418 | return drm_connector_set_panel_orientation(connector, | |
2419 | panel_orientation); | |
2420 | } | |
2421 | EXPORT_SYMBOL(drm_connector_set_panel_orientation_with_quirk); | |
8d70f395 | 2422 | |
107fe904 RJ |
2423 | static const struct drm_prop_enum_list privacy_screen_enum[] = { |
2424 | { PRIVACY_SCREEN_DISABLED, "Disabled" }, | |
2425 | { PRIVACY_SCREEN_ENABLED, "Enabled" }, | |
2426 | { PRIVACY_SCREEN_DISABLED_LOCKED, "Disabled-locked" }, | |
2427 | { PRIVACY_SCREEN_ENABLED_LOCKED, "Enabled-locked" }, | |
2428 | }; | |
2429 | ||
2430 | /** | |
2431 | * drm_connector_create_privacy_screen_properties - create the drm connecter's | |
2432 | * privacy-screen properties. | |
2433 | * @connector: connector for which to create the privacy-screen properties | |
2434 | * | |
2435 | * This function creates the "privacy-screen sw-state" and "privacy-screen | |
2436 | * hw-state" properties for the connector. They are not attached. | |
2437 | */ | |
2438 | void | |
2439 | drm_connector_create_privacy_screen_properties(struct drm_connector *connector) | |
2440 | { | |
2441 | if (connector->privacy_screen_sw_state_property) | |
2442 | return; | |
2443 | ||
2444 | /* Note sw-state only supports the first 2 values of the enum */ | |
2445 | connector->privacy_screen_sw_state_property = | |
2446 | drm_property_create_enum(connector->dev, DRM_MODE_PROP_ENUM, | |
2447 | "privacy-screen sw-state", | |
2448 | privacy_screen_enum, 2); | |
2449 | ||
2450 | connector->privacy_screen_hw_state_property = | |
2451 | drm_property_create_enum(connector->dev, | |
2452 | DRM_MODE_PROP_IMMUTABLE | DRM_MODE_PROP_ENUM, | |
2453 | "privacy-screen hw-state", | |
2454 | privacy_screen_enum, | |
2455 | ARRAY_SIZE(privacy_screen_enum)); | |
2456 | } | |
2457 | EXPORT_SYMBOL(drm_connector_create_privacy_screen_properties); | |
2458 | ||
2459 | /** | |
2460 | * drm_connector_attach_privacy_screen_properties - attach the drm connecter's | |
2461 | * privacy-screen properties. | |
2462 | * @connector: connector on which to attach the privacy-screen properties | |
2463 | * | |
2464 | * This function attaches the "privacy-screen sw-state" and "privacy-screen | |
2465 | * hw-state" properties to the connector. The initial state of both is set | |
2466 | * to "Disabled". | |
2467 | */ | |
2468 | void | |
2469 | drm_connector_attach_privacy_screen_properties(struct drm_connector *connector) | |
2470 | { | |
2471 | if (!connector->privacy_screen_sw_state_property) | |
2472 | return; | |
2473 | ||
2474 | drm_object_attach_property(&connector->base, | |
2475 | connector->privacy_screen_sw_state_property, | |
2476 | PRIVACY_SCREEN_DISABLED); | |
2477 | ||
2478 | drm_object_attach_property(&connector->base, | |
2479 | connector->privacy_screen_hw_state_property, | |
2480 | PRIVACY_SCREEN_DISABLED); | |
2481 | } | |
2482 | EXPORT_SYMBOL(drm_connector_attach_privacy_screen_properties); | |
2483 | ||
334f74ee HG |
2484 | static void drm_connector_update_privacy_screen_properties( |
2485 | struct drm_connector *connector, bool set_sw_state) | |
2486 | { | |
2487 | enum drm_privacy_screen_status sw_state, hw_state; | |
2488 | ||
2489 | drm_privacy_screen_get_state(connector->privacy_screen, | |
2490 | &sw_state, &hw_state); | |
2491 | ||
2492 | if (set_sw_state) | |
2493 | connector->state->privacy_screen_sw_state = sw_state; | |
2494 | drm_object_property_set_value(&connector->base, | |
2495 | connector->privacy_screen_hw_state_property, hw_state); | |
2496 | } | |
2497 | ||
2498 | static int drm_connector_privacy_screen_notifier( | |
2499 | struct notifier_block *nb, unsigned long action, void *data) | |
2500 | { | |
2501 | struct drm_connector *connector = | |
2502 | container_of(nb, struct drm_connector, privacy_screen_notifier); | |
2503 | struct drm_device *dev = connector->dev; | |
2504 | ||
2505 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); | |
2506 | drm_connector_update_privacy_screen_properties(connector, true); | |
2507 | drm_modeset_unlock(&dev->mode_config.connection_mutex); | |
2508 | ||
2509 | drm_sysfs_connector_status_event(connector, | |
2510 | connector->privacy_screen_sw_state_property); | |
2511 | drm_sysfs_connector_status_event(connector, | |
2512 | connector->privacy_screen_hw_state_property); | |
2513 | ||
2514 | return NOTIFY_DONE; | |
2515 | } | |
2516 | ||
2517 | /** | |
2518 | * drm_connector_attach_privacy_screen_provider - attach a privacy-screen to | |
2519 | * the connector | |
2520 | * @connector: connector to attach the privacy-screen to | |
2521 | * @priv: drm_privacy_screen to attach | |
2522 | * | |
2523 | * Create and attach the standard privacy-screen properties and register | |
2524 | * a generic notifier for generating sysfs-connector-status-events | |
2525 | * on external changes to the privacy-screen status. | |
2526 | * This function takes ownership of the passed in drm_privacy_screen and will | |
2527 | * call drm_privacy_screen_put() on it when the connector is destroyed. | |
2528 | */ | |
2529 | void drm_connector_attach_privacy_screen_provider( | |
2530 | struct drm_connector *connector, struct drm_privacy_screen *priv) | |
2531 | { | |
2532 | connector->privacy_screen = priv; | |
2533 | connector->privacy_screen_notifier.notifier_call = | |
2534 | drm_connector_privacy_screen_notifier; | |
2535 | ||
2536 | drm_connector_create_privacy_screen_properties(connector); | |
2537 | drm_connector_update_privacy_screen_properties(connector, true); | |
2538 | drm_connector_attach_privacy_screen_properties(connector); | |
2539 | } | |
2540 | EXPORT_SYMBOL(drm_connector_attach_privacy_screen_provider); | |
2541 | ||
2542 | /** | |
2543 | * drm_connector_update_privacy_screen - update connector's privacy-screen sw-state | |
2544 | * @connector_state: connector-state to update the privacy-screen for | |
2545 | * | |
2546 | * This function calls drm_privacy_screen_set_sw_state() on the connector's | |
2547 | * privacy-screen. | |
2548 | * | |
2549 | * If the connector has no privacy-screen, then this is a no-op. | |
2550 | */ | |
2551 | void drm_connector_update_privacy_screen(const struct drm_connector_state *connector_state) | |
2552 | { | |
2553 | struct drm_connector *connector = connector_state->connector; | |
2554 | int ret; | |
2555 | ||
2556 | if (!connector->privacy_screen) | |
2557 | return; | |
2558 | ||
2559 | ret = drm_privacy_screen_set_sw_state(connector->privacy_screen, | |
2560 | connector_state->privacy_screen_sw_state); | |
2561 | if (ret) { | |
2562 | drm_err(connector->dev, "Error updating privacy-screen sw_state\n"); | |
2563 | return; | |
2564 | } | |
2565 | ||
2566 | /* The hw_state property value may have changed, update it. */ | |
2567 | drm_connector_update_privacy_screen_properties(connector, false); | |
2568 | } | |
2569 | EXPORT_SYMBOL(drm_connector_update_privacy_screen); | |
2570 | ||
97e14fbe | 2571 | int drm_connector_set_obj_prop(struct drm_mode_object *obj, |
52217195 DV |
2572 | struct drm_property *property, |
2573 | uint64_t value) | |
2574 | { | |
2575 | int ret = -EINVAL; | |
2576 | struct drm_connector *connector = obj_to_connector(obj); | |
2577 | ||
2578 | /* Do DPMS ourselves */ | |
2579 | if (property == connector->dev->mode_config.dpms_property) { | |
2580 | ret = (*connector->funcs->dpms)(connector, (int)value); | |
2581 | } else if (connector->funcs->set_property) | |
2582 | ret = connector->funcs->set_property(connector, property, value); | |
2583 | ||
144a7999 | 2584 | if (!ret) |
52217195 DV |
2585 | drm_object_property_set_value(&connector->base, property, value); |
2586 | return ret; | |
2587 | } | |
2588 | ||
97e14fbe DV |
2589 | int drm_connector_property_set_ioctl(struct drm_device *dev, |
2590 | void *data, struct drm_file *file_priv) | |
52217195 DV |
2591 | { |
2592 | struct drm_mode_connector_set_property *conn_set_prop = data; | |
2593 | struct drm_mode_obj_set_property obj_set_prop = { | |
2594 | .value = conn_set_prop->value, | |
2595 | .prop_id = conn_set_prop->prop_id, | |
2596 | .obj_id = conn_set_prop->connector_id, | |
2597 | .obj_type = DRM_MODE_OBJECT_CONNECTOR | |
2598 | }; | |
2599 | ||
2600 | /* It does all the locking and checking we need */ | |
2601 | return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv); | |
2602 | } | |
2603 | ||
2604 | static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector) | |
2605 | { | |
2606 | /* For atomic drivers only state objects are synchronously updated and | |
c2ce66da BMC |
2607 | * protected by modeset locks, so check those first. |
2608 | */ | |
52217195 DV |
2609 | if (connector->state) |
2610 | return connector->state->best_encoder; | |
2611 | return connector->encoder; | |
2612 | } | |
2613 | ||
c3ff0cdb AN |
2614 | static bool |
2615 | drm_mode_expose_to_userspace(const struct drm_display_mode *mode, | |
8445e2c5 | 2616 | const struct list_head *modes, |
c3ff0cdb | 2617 | const struct drm_file *file_priv) |
52217195 DV |
2618 | { |
2619 | /* | |
2620 | * If user-space hasn't configured the driver to expose the stereo 3D | |
2621 | * modes, don't expose them. | |
2622 | */ | |
2623 | if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode)) | |
2624 | return false; | |
c3ff0cdb AN |
2625 | /* |
2626 | * If user-space hasn't configured the driver to expose the modes | |
2627 | * with aspect-ratio, don't expose them. However if such a mode | |
2628 | * is unique, let it be exposed, but reset the aspect-ratio flags | |
2629 | * while preparing the list of user-modes. | |
2630 | */ | |
2631 | if (!file_priv->aspect_ratio_allowed) { | |
8445e2c5 | 2632 | const struct drm_display_mode *mode_itr; |
c3ff0cdb | 2633 | |
8445e2c5 VS |
2634 | list_for_each_entry(mode_itr, modes, head) { |
2635 | if (mode_itr->expose_to_userspace && | |
2636 | drm_mode_match(mode_itr, mode, | |
c3ff0cdb AN |
2637 | DRM_MODE_MATCH_TIMINGS | |
2638 | DRM_MODE_MATCH_CLOCK | | |
2639 | DRM_MODE_MATCH_FLAGS | | |
2640 | DRM_MODE_MATCH_3D_FLAGS)) | |
2641 | return false; | |
8445e2c5 | 2642 | } |
c3ff0cdb | 2643 | } |
52217195 DV |
2644 | |
2645 | return true; | |
2646 | } | |
2647 | ||
2648 | int drm_mode_getconnector(struct drm_device *dev, void *data, | |
2649 | struct drm_file *file_priv) | |
2650 | { | |
2651 | struct drm_mode_get_connector *out_resp = data; | |
2652 | struct drm_connector *connector; | |
2653 | struct drm_encoder *encoder; | |
2654 | struct drm_display_mode *mode; | |
2655 | int mode_count = 0; | |
2656 | int encoders_count = 0; | |
2657 | int ret = 0; | |
2658 | int copied = 0; | |
52217195 DV |
2659 | struct drm_mode_modeinfo u_mode; |
2660 | struct drm_mode_modeinfo __user *mode_ptr; | |
2661 | uint32_t __user *encoder_ptr; | |
869e76f7 | 2662 | bool is_current_master; |
52217195 DV |
2663 | |
2664 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
69fdf420 | 2665 | return -EOPNOTSUPP; |
52217195 DV |
2666 | |
2667 | memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo)); | |
2668 | ||
418da172 | 2669 | connector = drm_connector_lookup(dev, file_priv, out_resp->connector_id); |
91eefc05 DV |
2670 | if (!connector) |
2671 | return -ENOENT; | |
2672 | ||
62afb4ad | 2673 | encoders_count = hweight32(connector->possible_encoders); |
52217195 | 2674 | |
91eefc05 DV |
2675 | if ((out_resp->count_encoders >= encoders_count) && encoders_count) { |
2676 | copied = 0; | |
2677 | encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr); | |
83aefbb8 | 2678 | |
62afb4ad | 2679 | drm_connector_for_each_possible_encoder(connector, encoder) { |
83aefbb8 VS |
2680 | if (put_user(encoder->base.id, encoder_ptr + copied)) { |
2681 | ret = -EFAULT; | |
2682 | goto out; | |
91eefc05 | 2683 | } |
83aefbb8 | 2684 | copied++; |
91eefc05 DV |
2685 | } |
2686 | } | |
2687 | out_resp->count_encoders = encoders_count; | |
2688 | ||
2689 | out_resp->connector_id = connector->base.id; | |
2690 | out_resp->connector_type = connector->connector_type; | |
2691 | out_resp->connector_type_id = connector->connector_type_id; | |
2692 | ||
869e76f7 DCZX |
2693 | is_current_master = drm_is_current_master(file_priv); |
2694 | ||
91eefc05 | 2695 | mutex_lock(&dev->mode_config.mutex); |
52217195 | 2696 | if (out_resp->count_modes == 0) { |
869e76f7 | 2697 | if (is_current_master) |
8f86c82a SS |
2698 | connector->funcs->fill_modes(connector, |
2699 | dev->mode_config.max_width, | |
2700 | dev->mode_config.max_height); | |
2701 | else | |
2702 | drm_dbg_kms(dev, "User-space requested a forced probe on [CONNECTOR:%d:%s] but is not the DRM master, demoting to read-only probe", | |
2703 | connector->base.id, connector->name); | |
52217195 DV |
2704 | } |
2705 | ||
52217195 DV |
2706 | out_resp->mm_width = connector->display_info.width_mm; |
2707 | out_resp->mm_height = connector->display_info.height_mm; | |
2708 | out_resp->subpixel = connector->display_info.subpixel_order; | |
2709 | out_resp->connection = connector->status; | |
2710 | ||
91eefc05 | 2711 | /* delayed so we get modes regardless of pre-fill_modes state */ |
8445e2c5 VS |
2712 | list_for_each_entry(mode, &connector->modes, head) { |
2713 | WARN_ON(mode->expose_to_userspace); | |
2714 | ||
2715 | if (drm_mode_expose_to_userspace(mode, &connector->modes, | |
c3ff0cdb | 2716 | file_priv)) { |
8445e2c5 | 2717 | mode->expose_to_userspace = true; |
91eefc05 | 2718 | mode_count++; |
c3ff0cdb | 2719 | } |
8445e2c5 | 2720 | } |
52217195 DV |
2721 | |
2722 | /* | |
2723 | * This ioctl is called twice, once to determine how much space is | |
2724 | * needed, and the 2nd time to fill it. | |
2725 | */ | |
2726 | if ((out_resp->count_modes >= mode_count) && mode_count) { | |
2727 | copied = 0; | |
2728 | mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr; | |
8445e2c5 VS |
2729 | list_for_each_entry(mode, &connector->modes, head) { |
2730 | if (!mode->expose_to_userspace) | |
2731 | continue; | |
2732 | ||
2733 | /* Clear the tag for the next time around */ | |
2734 | mode->expose_to_userspace = false; | |
2735 | ||
52217195 | 2736 | drm_mode_convert_to_umode(&u_mode, mode); |
c3ff0cdb AN |
2737 | /* |
2738 | * Reset aspect ratio flags of user-mode, if modes with | |
2739 | * aspect-ratio are not supported. | |
2740 | */ | |
2741 | if (!file_priv->aspect_ratio_allowed) | |
2742 | u_mode.flags &= ~DRM_MODE_FLAG_PIC_AR_MASK; | |
52217195 DV |
2743 | if (copy_to_user(mode_ptr + copied, |
2744 | &u_mode, sizeof(u_mode))) { | |
2745 | ret = -EFAULT; | |
8445e2c5 VS |
2746 | |
2747 | /* | |
2748 | * Clear the tag for the rest of | |
2749 | * the modes for the next time around. | |
2750 | */ | |
2751 | list_for_each_entry_continue(mode, &connector->modes, head) | |
2752 | mode->expose_to_userspace = false; | |
2753 | ||
e94ac351 DV |
2754 | mutex_unlock(&dev->mode_config.mutex); |
2755 | ||
52217195 DV |
2756 | goto out; |
2757 | } | |
2758 | copied++; | |
2759 | } | |
8445e2c5 VS |
2760 | } else { |
2761 | /* Clear the tag for the next time around */ | |
2762 | list_for_each_entry(mode, &connector->modes, head) | |
2763 | mode->expose_to_userspace = false; | |
52217195 | 2764 | } |
8445e2c5 | 2765 | |
52217195 | 2766 | out_resp->count_modes = mode_count; |
52217195 | 2767 | mutex_unlock(&dev->mode_config.mutex); |
e94ac351 DV |
2768 | |
2769 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); | |
2770 | encoder = drm_connector_get_encoder(connector); | |
2771 | if (encoder) | |
2772 | out_resp->encoder_id = encoder->base.id; | |
2773 | else | |
2774 | out_resp->encoder_id = 0; | |
2775 | ||
2776 | /* Only grab properties after probing, to make sure EDID and other | |
c2ce66da BMC |
2777 | * properties reflect the latest status. |
2778 | */ | |
e94ac351 DV |
2779 | ret = drm_mode_object_get_properties(&connector->base, file_priv->atomic, |
2780 | (uint32_t __user *)(unsigned long)(out_resp->props_ptr), | |
2781 | (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr), | |
2782 | &out_resp->count_props); | |
2783 | drm_modeset_unlock(&dev->mode_config.connection_mutex); | |
2784 | ||
2785 | out: | |
ad093607 | 2786 | drm_connector_put(connector); |
52217195 DV |
2787 | |
2788 | return ret; | |
2789 | } | |
2790 | ||
3d3f7c1e HG |
2791 | /** |
2792 | * drm_connector_find_by_fwnode - Find a connector based on the associated fwnode | |
2793 | * @fwnode: fwnode for which to find the matching drm_connector | |
2794 | * | |
2795 | * This functions looks up a drm_connector based on its associated fwnode. When | |
2796 | * a connector is found a reference to the connector is returned. The caller must | |
2797 | * call drm_connector_put() to release this reference when it is done with the | |
2798 | * connector. | |
2799 | * | |
2800 | * Returns: A reference to the found connector or an ERR_PTR(). | |
2801 | */ | |
2802 | struct drm_connector *drm_connector_find_by_fwnode(struct fwnode_handle *fwnode) | |
2803 | { | |
2804 | struct drm_connector *connector, *found = ERR_PTR(-ENODEV); | |
2805 | ||
2806 | if (!fwnode) | |
2807 | return ERR_PTR(-ENODEV); | |
2808 | ||
2809 | mutex_lock(&connector_list_lock); | |
2810 | ||
2811 | list_for_each_entry(connector, &connector_list, global_connector_list_entry) { | |
2812 | if (connector->fwnode == fwnode || | |
2813 | (connector->fwnode && connector->fwnode->secondary == fwnode)) { | |
2814 | drm_connector_get(connector); | |
2815 | found = connector; | |
2816 | break; | |
2817 | } | |
2818 | } | |
2819 | ||
2820 | mutex_unlock(&connector_list_lock); | |
2821 | ||
2822 | return found; | |
2823 | } | |
2824 | ||
72ad4968 HG |
2825 | /** |
2826 | * drm_connector_oob_hotplug_event - Report out-of-band hotplug event to connector | |
f85d9e59 | 2827 | * @connector_fwnode: fwnode_handle to report the event on |
72ad4968 HG |
2828 | * |
2829 | * On some hardware a hotplug event notification may come from outside the display | |
2830 | * driver / device. An example of this is some USB Type-C setups where the hardware | |
2831 | * muxes the DisplayPort data and aux-lines but does not pass the altmode HPD | |
2832 | * status bit to the GPU's DP HPD pin. | |
2833 | * | |
2834 | * This function can be used to report these out-of-band events after obtaining | |
2835 | * a drm_connector reference through calling drm_connector_find_by_fwnode(). | |
2836 | */ | |
2837 | void drm_connector_oob_hotplug_event(struct fwnode_handle *connector_fwnode) | |
2838 | { | |
2839 | struct drm_connector *connector; | |
2840 | ||
2841 | connector = drm_connector_find_by_fwnode(connector_fwnode); | |
2842 | if (IS_ERR(connector)) | |
2843 | return; | |
2844 | ||
2845 | if (connector->funcs->oob_hotplug_event) | |
2846 | connector->funcs->oob_hotplug_event(connector); | |
2847 | ||
2848 | drm_connector_put(connector); | |
2849 | } | |
2850 | EXPORT_SYMBOL(drm_connector_oob_hotplug_event); | |
2851 | ||
9498c19b DV |
2852 | |
2853 | /** | |
2854 | * DOC: Tile group | |
2855 | * | |
2856 | * Tile groups are used to represent tiled monitors with a unique integer | |
2857 | * identifier. Tiled monitors using DisplayID v1.3 have a unique 8-byte handle, | |
2858 | * we store this in a tile group, so we have a common identifier for all tiles | |
2859 | * in a monitor group. The property is called "TILE". Drivers can manage tile | |
2860 | * groups using drm_mode_create_tile_group(), drm_mode_put_tile_group() and | |
2861 | * drm_mode_get_tile_group(). But this is only needed for internal panels where | |
2862 | * the tile group information is exposed through a non-standard way. | |
2863 | */ | |
2864 | ||
2865 | static void drm_tile_group_free(struct kref *kref) | |
2866 | { | |
2867 | struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount); | |
2868 | struct drm_device *dev = tg->dev; | |
948de842 | 2869 | |
9498c19b DV |
2870 | mutex_lock(&dev->mode_config.idr_mutex); |
2871 | idr_remove(&dev->mode_config.tile_idr, tg->id); | |
2872 | mutex_unlock(&dev->mode_config.idr_mutex); | |
2873 | kfree(tg); | |
2874 | } | |
2875 | ||
2876 | /** | |
2877 | * drm_mode_put_tile_group - drop a reference to a tile group. | |
2878 | * @dev: DRM device | |
2879 | * @tg: tile group to drop reference to. | |
2880 | * | |
2881 | * drop reference to tile group and free if 0. | |
2882 | */ | |
2883 | void drm_mode_put_tile_group(struct drm_device *dev, | |
2884 | struct drm_tile_group *tg) | |
2885 | { | |
2886 | kref_put(&tg->refcount, drm_tile_group_free); | |
2887 | } | |
2888 | EXPORT_SYMBOL(drm_mode_put_tile_group); | |
2889 | ||
2890 | /** | |
2891 | * drm_mode_get_tile_group - get a reference to an existing tile group | |
2892 | * @dev: DRM device | |
2893 | * @topology: 8-bytes unique per monitor. | |
2894 | * | |
2895 | * Use the unique bytes to get a reference to an existing tile group. | |
2896 | * | |
2897 | * RETURNS: | |
2898 | * tile group or NULL if not found. | |
2899 | */ | |
2900 | struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev, | |
267ea759 | 2901 | const char topology[8]) |
9498c19b DV |
2902 | { |
2903 | struct drm_tile_group *tg; | |
2904 | int id; | |
948de842 | 2905 | |
9498c19b DV |
2906 | mutex_lock(&dev->mode_config.idr_mutex); |
2907 | idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) { | |
2908 | if (!memcmp(tg->group_data, topology, 8)) { | |
2909 | if (!kref_get_unless_zero(&tg->refcount)) | |
2910 | tg = NULL; | |
2911 | mutex_unlock(&dev->mode_config.idr_mutex); | |
2912 | return tg; | |
2913 | } | |
2914 | } | |
2915 | mutex_unlock(&dev->mode_config.idr_mutex); | |
2916 | return NULL; | |
2917 | } | |
2918 | EXPORT_SYMBOL(drm_mode_get_tile_group); | |
2919 | ||
2920 | /** | |
2921 | * drm_mode_create_tile_group - create a tile group from a displayid description | |
2922 | * @dev: DRM device | |
2923 | * @topology: 8-bytes unique per monitor. | |
2924 | * | |
2925 | * Create a tile group for the unique monitor, and get a unique | |
2926 | * identifier for the tile group. | |
2927 | * | |
2928 | * RETURNS: | |
705c8160 | 2929 | * new tile group or NULL. |
9498c19b DV |
2930 | */ |
2931 | struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev, | |
267ea759 | 2932 | const char topology[8]) |
9498c19b DV |
2933 | { |
2934 | struct drm_tile_group *tg; | |
2935 | int ret; | |
2936 | ||
2937 | tg = kzalloc(sizeof(*tg), GFP_KERNEL); | |
2938 | if (!tg) | |
705c8160 | 2939 | return NULL; |
9498c19b DV |
2940 | |
2941 | kref_init(&tg->refcount); | |
2942 | memcpy(tg->group_data, topology, 8); | |
2943 | tg->dev = dev; | |
2944 | ||
2945 | mutex_lock(&dev->mode_config.idr_mutex); | |
2946 | ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL); | |
2947 | if (ret >= 0) { | |
2948 | tg->id = ret; | |
2949 | } else { | |
2950 | kfree(tg); | |
705c8160 | 2951 | tg = NULL; |
9498c19b DV |
2952 | } |
2953 | ||
2954 | mutex_unlock(&dev->mode_config.idr_mutex); | |
2955 | return tg; | |
2956 | } | |
2957 | EXPORT_SYMBOL(drm_mode_create_tile_group); |