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Commit | Line | Data |
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52217195 DV |
1 | /* |
2 | * Copyright (c) 2016 Intel Corporation | |
3 | * | |
4 | * Permission to use, copy, modify, distribute, and sell this software and its | |
5 | * documentation for any purpose is hereby granted without fee, provided that | |
6 | * the above copyright notice appear in all copies and that both that copyright | |
7 | * notice and this permission notice appear in supporting documentation, and | |
8 | * that the name of the copyright holders not be used in advertising or | |
9 | * publicity pertaining to distribution of the software without specific, | |
10 | * written prior permission. The copyright holders make no representations | |
11 | * about the suitability of this software for any purpose. It is provided "as | |
12 | * is" without express or implied warranty. | |
13 | * | |
14 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
15 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
16 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
17 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
18 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
19 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
20 | * OF THIS SOFTWARE. | |
21 | */ | |
22 | ||
52217195 DV |
23 | #include <drm/drm_connector.h> |
24 | #include <drm/drm_edid.h> | |
9338203c | 25 | #include <drm/drm_encoder.h> |
8d70f395 | 26 | #include <drm/drm_utils.h> |
99f45e32 DV |
27 | #include <drm/drm_print.h> |
28 | #include <drm/drm_drv.h> | |
29 | #include <drm/drm_file.h> | |
30 | ||
31 | #include <linux/uaccess.h> | |
52217195 DV |
32 | |
33 | #include "drm_crtc_internal.h" | |
34 | #include "drm_internal.h" | |
35 | ||
ae2a6da8 DV |
36 | /** |
37 | * DOC: overview | |
38 | * | |
39 | * In DRM connectors are the general abstraction for display sinks, and include | |
40 | * als fixed panels or anything else that can display pixels in some form. As | |
41 | * opposed to all other KMS objects representing hardware (like CRTC, encoder or | |
42 | * plane abstractions) connectors can be hotplugged and unplugged at runtime. | |
ad093607 TR |
43 | * Hence they are reference-counted using drm_connector_get() and |
44 | * drm_connector_put(). | |
ae2a6da8 | 45 | * |
d574528a DV |
46 | * KMS driver must create, initialize, register and attach at a &struct |
47 | * drm_connector for each such sink. The instance is created as other KMS | |
aec97460 DV |
48 | * objects and initialized by setting the following fields. The connector is |
49 | * initialized with a call to drm_connector_init() with a pointer to the | |
50 | * &struct drm_connector_funcs and a connector type, and then exposed to | |
51 | * userspace with a call to drm_connector_register(). | |
ae2a6da8 DV |
52 | * |
53 | * Connectors must be attached to an encoder to be used. For devices that map | |
54 | * connectors to encoders 1:1, the connector should be attached at | |
cde4c44d | 55 | * initialization time with a call to drm_connector_attach_encoder(). The |
d574528a | 56 | * driver must also set the &drm_connector.encoder field to point to the |
ae2a6da8 DV |
57 | * attached encoder. |
58 | * | |
59 | * For connectors which are not fixed (like built-in panels) the driver needs to | |
60 | * support hotplug notifications. The simplest way to do that is by using the | |
61 | * probe helpers, see drm_kms_helper_poll_init() for connectors which don't have | |
62 | * hardware support for hotplug interrupts. Connectors with hardware hotplug | |
63 | * support can instead use e.g. drm_helper_hpd_irq_event(). | |
64 | */ | |
65 | ||
52217195 DV |
66 | struct drm_conn_prop_enum_list { |
67 | int type; | |
68 | const char *name; | |
69 | struct ida ida; | |
70 | }; | |
71 | ||
72 | /* | |
73 | * Connector and encoder types. | |
74 | */ | |
75 | static struct drm_conn_prop_enum_list drm_connector_enum_list[] = { | |
76 | { DRM_MODE_CONNECTOR_Unknown, "Unknown" }, | |
77 | { DRM_MODE_CONNECTOR_VGA, "VGA" }, | |
78 | { DRM_MODE_CONNECTOR_DVII, "DVI-I" }, | |
79 | { DRM_MODE_CONNECTOR_DVID, "DVI-D" }, | |
80 | { DRM_MODE_CONNECTOR_DVIA, "DVI-A" }, | |
81 | { DRM_MODE_CONNECTOR_Composite, "Composite" }, | |
82 | { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" }, | |
83 | { DRM_MODE_CONNECTOR_LVDS, "LVDS" }, | |
84 | { DRM_MODE_CONNECTOR_Component, "Component" }, | |
85 | { DRM_MODE_CONNECTOR_9PinDIN, "DIN" }, | |
86 | { DRM_MODE_CONNECTOR_DisplayPort, "DP" }, | |
87 | { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" }, | |
88 | { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" }, | |
89 | { DRM_MODE_CONNECTOR_TV, "TV" }, | |
90 | { DRM_MODE_CONNECTOR_eDP, "eDP" }, | |
91 | { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" }, | |
92 | { DRM_MODE_CONNECTOR_DSI, "DSI" }, | |
93 | { DRM_MODE_CONNECTOR_DPI, "DPI" }, | |
935774cd | 94 | { DRM_MODE_CONNECTOR_WRITEBACK, "Writeback" }, |
fc06bf1d | 95 | { DRM_MODE_CONNECTOR_SPI, "SPI" }, |
52217195 DV |
96 | }; |
97 | ||
98 | void drm_connector_ida_init(void) | |
99 | { | |
100 | int i; | |
101 | ||
102 | for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++) | |
103 | ida_init(&drm_connector_enum_list[i].ida); | |
104 | } | |
105 | ||
106 | void drm_connector_ida_destroy(void) | |
107 | { | |
108 | int i; | |
109 | ||
110 | for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++) | |
111 | ida_destroy(&drm_connector_enum_list[i].ida); | |
112 | } | |
113 | ||
114 | /** | |
115 | * drm_connector_get_cmdline_mode - reads the user's cmdline mode | |
116 | * @connector: connector to quwery | |
117 | * | |
ae2a6da8 | 118 | * The kernel supports per-connector configuration of its consoles through |
52217195 DV |
119 | * use of the video= parameter. This function parses that option and |
120 | * extracts the user's specified mode (or enable/disable status) for a | |
121 | * particular connector. This is typically only used during the early fbdev | |
122 | * setup. | |
123 | */ | |
124 | static void drm_connector_get_cmdline_mode(struct drm_connector *connector) | |
125 | { | |
126 | struct drm_cmdline_mode *mode = &connector->cmdline_mode; | |
127 | char *option = NULL; | |
128 | ||
129 | if (fb_get_options(connector->name, &option)) | |
130 | return; | |
131 | ||
132 | if (!drm_mode_parse_command_line_for_connector(option, | |
133 | connector, | |
134 | mode)) | |
135 | return; | |
136 | ||
137 | if (mode->force) { | |
6140cf20 JN |
138 | DRM_INFO("forcing %s connector %s\n", connector->name, |
139 | drm_get_connector_force_name(mode->force)); | |
52217195 DV |
140 | connector->force = mode->force; |
141 | } | |
142 | ||
3aeeb13d | 143 | DRM_DEBUG_KMS("cmdline mode for connector %s %s %dx%d@%dHz%s%s%s\n", |
50b0946d | 144 | connector->name, mode->name, |
52217195 DV |
145 | mode->xres, mode->yres, |
146 | mode->refresh_specified ? mode->refresh : 60, | |
147 | mode->rb ? " reduced blanking" : "", | |
148 | mode->margins ? " with margins" : "", | |
149 | mode->interlace ? " interlaced" : ""); | |
150 | } | |
151 | ||
152 | static void drm_connector_free(struct kref *kref) | |
153 | { | |
154 | struct drm_connector *connector = | |
155 | container_of(kref, struct drm_connector, base.refcount); | |
156 | struct drm_device *dev = connector->dev; | |
157 | ||
158 | drm_mode_object_unregister(dev, &connector->base); | |
159 | connector->funcs->destroy(connector); | |
160 | } | |
161 | ||
ea497bb9 | 162 | void drm_connector_free_work_fn(struct work_struct *work) |
a703c550 | 163 | { |
ea497bb9 DV |
164 | struct drm_connector *connector, *n; |
165 | struct drm_device *dev = | |
166 | container_of(work, struct drm_device, mode_config.connector_free_work); | |
167 | struct drm_mode_config *config = &dev->mode_config; | |
168 | unsigned long flags; | |
169 | struct llist_node *freed; | |
a703c550 | 170 | |
ea497bb9 DV |
171 | spin_lock_irqsave(&config->connector_list_lock, flags); |
172 | freed = llist_del_all(&config->connector_free_list); | |
173 | spin_unlock_irqrestore(&config->connector_list_lock, flags); | |
174 | ||
175 | llist_for_each_entry_safe(connector, n, freed, free_node) { | |
176 | drm_mode_object_unregister(dev, &connector->base); | |
177 | connector->funcs->destroy(connector); | |
178 | } | |
a703c550 DV |
179 | } |
180 | ||
52217195 DV |
181 | /** |
182 | * drm_connector_init - Init a preallocated connector | |
183 | * @dev: DRM device | |
184 | * @connector: the connector to init | |
185 | * @funcs: callbacks for this connector | |
186 | * @connector_type: user visible type of the connector | |
187 | * | |
188 | * Initialises a preallocated connector. Connectors should be | |
189 | * subclassed as part of driver connector objects. | |
190 | * | |
191 | * Returns: | |
192 | * Zero on success, error code on failure. | |
193 | */ | |
194 | int drm_connector_init(struct drm_device *dev, | |
195 | struct drm_connector *connector, | |
196 | const struct drm_connector_funcs *funcs, | |
197 | int connector_type) | |
198 | { | |
199 | struct drm_mode_config *config = &dev->mode_config; | |
200 | int ret; | |
201 | struct ida *connector_ida = | |
202 | &drm_connector_enum_list[connector_type].ida; | |
203 | ||
ba1f665f HM |
204 | WARN_ON(drm_drv_uses_atomic_modeset(dev) && |
205 | (!funcs->atomic_destroy_state || | |
206 | !funcs->atomic_duplicate_state)); | |
207 | ||
2135ea7a TR |
208 | ret = __drm_mode_object_add(dev, &connector->base, |
209 | DRM_MODE_OBJECT_CONNECTOR, | |
210 | false, drm_connector_free); | |
52217195 | 211 | if (ret) |
613051da | 212 | return ret; |
52217195 DV |
213 | |
214 | connector->base.properties = &connector->properties; | |
215 | connector->dev = dev; | |
216 | connector->funcs = funcs; | |
217 | ||
2a8d3eac VS |
218 | /* connector index is used with 32bit bitmasks */ |
219 | ret = ida_simple_get(&config->connector_ida, 0, 32, GFP_KERNEL); | |
220 | if (ret < 0) { | |
221 | DRM_DEBUG_KMS("Failed to allocate %s connector index: %d\n", | |
222 | drm_connector_enum_list[connector_type].name, | |
223 | ret); | |
52217195 | 224 | goto out_put; |
2a8d3eac | 225 | } |
52217195 DV |
226 | connector->index = ret; |
227 | ret = 0; | |
228 | ||
229 | connector->connector_type = connector_type; | |
230 | connector->connector_type_id = | |
231 | ida_simple_get(connector_ida, 1, 0, GFP_KERNEL); | |
232 | if (connector->connector_type_id < 0) { | |
233 | ret = connector->connector_type_id; | |
234 | goto out_put_id; | |
235 | } | |
236 | connector->name = | |
237 | kasprintf(GFP_KERNEL, "%s-%d", | |
238 | drm_connector_enum_list[connector_type].name, | |
239 | connector->connector_type_id); | |
240 | if (!connector->name) { | |
241 | ret = -ENOMEM; | |
242 | goto out_put_type_id; | |
243 | } | |
244 | ||
245 | INIT_LIST_HEAD(&connector->probed_modes); | |
246 | INIT_LIST_HEAD(&connector->modes); | |
e73ab00e | 247 | mutex_init(&connector->mutex); |
52217195 | 248 | connector->edid_blob_ptr = NULL; |
2de3a078 | 249 | connector->tile_blob_ptr = NULL; |
52217195 | 250 | connector->status = connector_status_unknown; |
8d70f395 HG |
251 | connector->display_info.panel_orientation = |
252 | DRM_MODE_PANEL_ORIENTATION_UNKNOWN; | |
52217195 DV |
253 | |
254 | drm_connector_get_cmdline_mode(connector); | |
255 | ||
256 | /* We should add connectors at the end to avoid upsetting the connector | |
257 | * index too much. */ | |
613051da | 258 | spin_lock_irq(&config->connector_list_lock); |
52217195 DV |
259 | list_add_tail(&connector->head, &config->connector_list); |
260 | config->num_connector++; | |
613051da | 261 | spin_unlock_irq(&config->connector_list_lock); |
52217195 | 262 | |
935774cd BS |
263 | if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL && |
264 | connector_type != DRM_MODE_CONNECTOR_WRITEBACK) | |
6b7e2d5c | 265 | drm_connector_attach_edid_property(connector); |
52217195 DV |
266 | |
267 | drm_object_attach_property(&connector->base, | |
268 | config->dpms_property, 0); | |
269 | ||
40ee6fbe MN |
270 | drm_object_attach_property(&connector->base, |
271 | config->link_status_property, | |
272 | 0); | |
273 | ||
66660d4c DA |
274 | drm_object_attach_property(&connector->base, |
275 | config->non_desktop_property, | |
276 | 0); | |
2de3a078 MN |
277 | drm_object_attach_property(&connector->base, |
278 | config->tile_property, | |
279 | 0); | |
66660d4c | 280 | |
52217195 DV |
281 | if (drm_core_check_feature(dev, DRIVER_ATOMIC)) { |
282 | drm_object_attach_property(&connector->base, config->prop_crtc_id, 0); | |
283 | } | |
284 | ||
285 | connector->debugfs_entry = NULL; | |
286 | out_put_type_id: | |
287 | if (ret) | |
587680c1 | 288 | ida_simple_remove(connector_ida, connector->connector_type_id); |
52217195 DV |
289 | out_put_id: |
290 | if (ret) | |
587680c1 | 291 | ida_simple_remove(&config->connector_ida, connector->index); |
52217195 DV |
292 | out_put: |
293 | if (ret) | |
294 | drm_mode_object_unregister(dev, &connector->base); | |
295 | ||
52217195 DV |
296 | return ret; |
297 | } | |
298 | EXPORT_SYMBOL(drm_connector_init); | |
299 | ||
100163df AP |
300 | /** |
301 | * drm_connector_init_with_ddc - Init a preallocated connector | |
302 | * @dev: DRM device | |
303 | * @connector: the connector to init | |
304 | * @funcs: callbacks for this connector | |
305 | * @connector_type: user visible type of the connector | |
306 | * @ddc: pointer to the associated ddc adapter | |
307 | * | |
308 | * Initialises a preallocated connector. Connectors should be | |
309 | * subclassed as part of driver connector objects. | |
310 | * | |
311 | * Ensures that the ddc field of the connector is correctly set. | |
312 | * | |
313 | * Returns: | |
314 | * Zero on success, error code on failure. | |
315 | */ | |
316 | int drm_connector_init_with_ddc(struct drm_device *dev, | |
317 | struct drm_connector *connector, | |
318 | const struct drm_connector_funcs *funcs, | |
319 | int connector_type, | |
320 | struct i2c_adapter *ddc) | |
321 | { | |
322 | int ret; | |
323 | ||
324 | ret = drm_connector_init(dev, connector, funcs, connector_type); | |
325 | if (ret) | |
326 | return ret; | |
327 | ||
328 | /* provide ddc symlink in sysfs */ | |
329 | connector->ddc = ddc; | |
330 | ||
331 | return ret; | |
332 | } | |
333 | EXPORT_SYMBOL(drm_connector_init_with_ddc); | |
334 | ||
6b7e2d5c GH |
335 | /** |
336 | * drm_connector_attach_edid_property - attach edid property. | |
6b7e2d5c GH |
337 | * @connector: the connector |
338 | * | |
339 | * Some connector types like DRM_MODE_CONNECTOR_VIRTUAL do not get a | |
340 | * edid property attached by default. This function can be used to | |
341 | * explicitly enable the edid property in these cases. | |
342 | */ | |
343 | void drm_connector_attach_edid_property(struct drm_connector *connector) | |
344 | { | |
345 | struct drm_mode_config *config = &connector->dev->mode_config; | |
346 | ||
347 | drm_object_attach_property(&connector->base, | |
348 | config->edid_property, | |
349 | 0); | |
350 | } | |
351 | EXPORT_SYMBOL(drm_connector_attach_edid_property); | |
352 | ||
52217195 | 353 | /** |
cde4c44d | 354 | * drm_connector_attach_encoder - attach a connector to an encoder |
52217195 DV |
355 | * @connector: connector to attach |
356 | * @encoder: encoder to attach @connector to | |
357 | * | |
358 | * This function links up a connector to an encoder. Note that the routing | |
359 | * restrictions between encoders and crtcs are exposed to userspace through the | |
360 | * possible_clones and possible_crtcs bitmasks. | |
361 | * | |
362 | * Returns: | |
363 | * Zero on success, negative errno on failure. | |
364 | */ | |
cde4c44d DV |
365 | int drm_connector_attach_encoder(struct drm_connector *connector, |
366 | struct drm_encoder *encoder) | |
52217195 DV |
367 | { |
368 | int i; | |
369 | ||
370 | /* | |
371 | * In the past, drivers have attempted to model the static association | |
372 | * of connector to encoder in simple connector/encoder devices using a | |
373 | * direct assignment of connector->encoder = encoder. This connection | |
374 | * is a logical one and the responsibility of the core, so drivers are | |
375 | * expected not to mess with this. | |
376 | * | |
377 | * Note that the error return should've been enough here, but a large | |
378 | * majority of drivers ignores the return value, so add in a big WARN | |
379 | * to get people's attention. | |
380 | */ | |
381 | if (WARN_ON(connector->encoder)) | |
382 | return -EINVAL; | |
383 | ||
83aefbb8 | 384 | for (i = 0; i < ARRAY_SIZE(connector->encoder_ids); i++) { |
52217195 DV |
385 | if (connector->encoder_ids[i] == 0) { |
386 | connector->encoder_ids[i] = encoder->base.id; | |
387 | return 0; | |
388 | } | |
389 | } | |
390 | return -ENOMEM; | |
391 | } | |
cde4c44d | 392 | EXPORT_SYMBOL(drm_connector_attach_encoder); |
52217195 | 393 | |
38cb8d96 VS |
394 | /** |
395 | * drm_connector_has_possible_encoder - check if the connector and encoder are assosicated with each other | |
396 | * @connector: the connector | |
397 | * @encoder: the encoder | |
398 | * | |
399 | * Returns: | |
400 | * True if @encoder is one of the possible encoders for @connector. | |
401 | */ | |
402 | bool drm_connector_has_possible_encoder(struct drm_connector *connector, | |
403 | struct drm_encoder *encoder) | |
404 | { | |
405 | struct drm_encoder *enc; | |
406 | int i; | |
407 | ||
408 | drm_connector_for_each_possible_encoder(connector, enc, i) { | |
409 | if (enc == encoder) | |
410 | return true; | |
411 | } | |
412 | ||
413 | return false; | |
414 | } | |
415 | EXPORT_SYMBOL(drm_connector_has_possible_encoder); | |
416 | ||
52217195 DV |
417 | static void drm_mode_remove(struct drm_connector *connector, |
418 | struct drm_display_mode *mode) | |
419 | { | |
420 | list_del(&mode->head); | |
421 | drm_mode_destroy(connector->dev, mode); | |
422 | } | |
423 | ||
424 | /** | |
425 | * drm_connector_cleanup - cleans up an initialised connector | |
426 | * @connector: connector to cleanup | |
427 | * | |
428 | * Cleans up the connector but doesn't free the object. | |
429 | */ | |
430 | void drm_connector_cleanup(struct drm_connector *connector) | |
431 | { | |
432 | struct drm_device *dev = connector->dev; | |
433 | struct drm_display_mode *mode, *t; | |
434 | ||
435 | /* The connector should have been removed from userspace long before | |
436 | * it is finally destroyed. | |
437 | */ | |
39b50c60 LP |
438 | if (WARN_ON(connector->registration_state == |
439 | DRM_CONNECTOR_REGISTERED)) | |
52217195 DV |
440 | drm_connector_unregister(connector); |
441 | ||
442 | if (connector->tile_group) { | |
443 | drm_mode_put_tile_group(dev, connector->tile_group); | |
444 | connector->tile_group = NULL; | |
445 | } | |
446 | ||
447 | list_for_each_entry_safe(mode, t, &connector->probed_modes, head) | |
448 | drm_mode_remove(connector, mode); | |
449 | ||
450 | list_for_each_entry_safe(mode, t, &connector->modes, head) | |
451 | drm_mode_remove(connector, mode); | |
452 | ||
9a47dba1 CJ |
453 | ida_simple_remove(&drm_connector_enum_list[connector->connector_type].ida, |
454 | connector->connector_type_id); | |
52217195 | 455 | |
9a47dba1 CJ |
456 | ida_simple_remove(&dev->mode_config.connector_ida, |
457 | connector->index); | |
52217195 DV |
458 | |
459 | kfree(connector->display_info.bus_formats); | |
460 | drm_mode_object_unregister(dev, &connector->base); | |
461 | kfree(connector->name); | |
462 | connector->name = NULL; | |
613051da | 463 | spin_lock_irq(&dev->mode_config.connector_list_lock); |
52217195 DV |
464 | list_del(&connector->head); |
465 | dev->mode_config.num_connector--; | |
613051da | 466 | spin_unlock_irq(&dev->mode_config.connector_list_lock); |
52217195 DV |
467 | |
468 | WARN_ON(connector->state && !connector->funcs->atomic_destroy_state); | |
469 | if (connector->state && connector->funcs->atomic_destroy_state) | |
470 | connector->funcs->atomic_destroy_state(connector, | |
471 | connector->state); | |
472 | ||
e73ab00e DV |
473 | mutex_destroy(&connector->mutex); |
474 | ||
52217195 DV |
475 | memset(connector, 0, sizeof(*connector)); |
476 | } | |
477 | EXPORT_SYMBOL(drm_connector_cleanup); | |
478 | ||
479 | /** | |
480 | * drm_connector_register - register a connector | |
481 | * @connector: the connector to register | |
482 | * | |
483 | * Register userspace interfaces for a connector | |
484 | * | |
485 | * Returns: | |
486 | * Zero on success, error code on failure. | |
487 | */ | |
488 | int drm_connector_register(struct drm_connector *connector) | |
489 | { | |
e73ab00e | 490 | int ret = 0; |
52217195 | 491 | |
e6e7b48b DV |
492 | if (!connector->dev->registered) |
493 | return 0; | |
494 | ||
e73ab00e | 495 | mutex_lock(&connector->mutex); |
39b50c60 | 496 | if (connector->registration_state != DRM_CONNECTOR_INITIALIZING) |
e73ab00e | 497 | goto unlock; |
52217195 DV |
498 | |
499 | ret = drm_sysfs_connector_add(connector); | |
500 | if (ret) | |
e73ab00e | 501 | goto unlock; |
52217195 | 502 | |
b792e640 | 503 | drm_debugfs_connector_add(connector); |
52217195 DV |
504 | |
505 | if (connector->funcs->late_register) { | |
506 | ret = connector->funcs->late_register(connector); | |
507 | if (ret) | |
508 | goto err_debugfs; | |
509 | } | |
510 | ||
511 | drm_mode_object_register(connector->dev, &connector->base); | |
512 | ||
39b50c60 | 513 | connector->registration_state = DRM_CONNECTOR_REGISTERED; |
e73ab00e | 514 | goto unlock; |
52217195 DV |
515 | |
516 | err_debugfs: | |
517 | drm_debugfs_connector_remove(connector); | |
52217195 | 518 | drm_sysfs_connector_remove(connector); |
e73ab00e DV |
519 | unlock: |
520 | mutex_unlock(&connector->mutex); | |
52217195 DV |
521 | return ret; |
522 | } | |
523 | EXPORT_SYMBOL(drm_connector_register); | |
524 | ||
525 | /** | |
526 | * drm_connector_unregister - unregister a connector | |
527 | * @connector: the connector to unregister | |
528 | * | |
529 | * Unregister userspace interfaces for a connector | |
530 | */ | |
531 | void drm_connector_unregister(struct drm_connector *connector) | |
532 | { | |
e73ab00e | 533 | mutex_lock(&connector->mutex); |
39b50c60 | 534 | if (connector->registration_state != DRM_CONNECTOR_REGISTERED) { |
e73ab00e | 535 | mutex_unlock(&connector->mutex); |
52217195 | 536 | return; |
e73ab00e | 537 | } |
52217195 DV |
538 | |
539 | if (connector->funcs->early_unregister) | |
540 | connector->funcs->early_unregister(connector); | |
541 | ||
542 | drm_sysfs_connector_remove(connector); | |
543 | drm_debugfs_connector_remove(connector); | |
544 | ||
39b50c60 | 545 | connector->registration_state = DRM_CONNECTOR_UNREGISTERED; |
e73ab00e | 546 | mutex_unlock(&connector->mutex); |
52217195 DV |
547 | } |
548 | EXPORT_SYMBOL(drm_connector_unregister); | |
549 | ||
550 | void drm_connector_unregister_all(struct drm_device *dev) | |
551 | { | |
552 | struct drm_connector *connector; | |
613051da | 553 | struct drm_connector_list_iter conn_iter; |
52217195 | 554 | |
b982dab1 | 555 | drm_connector_list_iter_begin(dev, &conn_iter); |
613051da | 556 | drm_for_each_connector_iter(connector, &conn_iter) |
52217195 | 557 | drm_connector_unregister(connector); |
b982dab1 | 558 | drm_connector_list_iter_end(&conn_iter); |
52217195 DV |
559 | } |
560 | ||
561 | int drm_connector_register_all(struct drm_device *dev) | |
562 | { | |
563 | struct drm_connector *connector; | |
613051da DV |
564 | struct drm_connector_list_iter conn_iter; |
565 | int ret = 0; | |
52217195 | 566 | |
b982dab1 | 567 | drm_connector_list_iter_begin(dev, &conn_iter); |
613051da | 568 | drm_for_each_connector_iter(connector, &conn_iter) { |
52217195 DV |
569 | ret = drm_connector_register(connector); |
570 | if (ret) | |
613051da | 571 | break; |
52217195 | 572 | } |
b982dab1 | 573 | drm_connector_list_iter_end(&conn_iter); |
52217195 | 574 | |
613051da DV |
575 | if (ret) |
576 | drm_connector_unregister_all(dev); | |
52217195 DV |
577 | return ret; |
578 | } | |
579 | ||
580 | /** | |
581 | * drm_get_connector_status_name - return a string for connector status | |
582 | * @status: connector status to compute name of | |
583 | * | |
584 | * In contrast to the other drm_get_*_name functions this one here returns a | |
585 | * const pointer and hence is threadsafe. | |
586 | */ | |
587 | const char *drm_get_connector_status_name(enum drm_connector_status status) | |
588 | { | |
589 | if (status == connector_status_connected) | |
590 | return "connected"; | |
591 | else if (status == connector_status_disconnected) | |
592 | return "disconnected"; | |
593 | else | |
594 | return "unknown"; | |
595 | } | |
596 | EXPORT_SYMBOL(drm_get_connector_status_name); | |
597 | ||
6140cf20 JN |
598 | /** |
599 | * drm_get_connector_force_name - return a string for connector force | |
600 | * @force: connector force to get name of | |
601 | * | |
602 | * Returns: const pointer to name. | |
603 | */ | |
604 | const char *drm_get_connector_force_name(enum drm_connector_force force) | |
605 | { | |
606 | switch (force) { | |
607 | case DRM_FORCE_UNSPECIFIED: | |
608 | return "unspecified"; | |
609 | case DRM_FORCE_OFF: | |
610 | return "off"; | |
611 | case DRM_FORCE_ON: | |
612 | return "on"; | |
613 | case DRM_FORCE_ON_DIGITAL: | |
614 | return "digital"; | |
615 | default: | |
616 | return "unknown"; | |
617 | } | |
618 | } | |
619 | ||
613051da DV |
620 | #ifdef CONFIG_LOCKDEP |
621 | static struct lockdep_map connector_list_iter_dep_map = { | |
622 | .name = "drm_connector_list_iter" | |
623 | }; | |
624 | #endif | |
625 | ||
626 | /** | |
b982dab1 | 627 | * drm_connector_list_iter_begin - initialize a connector_list iterator |
613051da DV |
628 | * @dev: DRM device |
629 | * @iter: connector_list iterator | |
630 | * | |
d574528a | 631 | * Sets @iter up to walk the &drm_mode_config.connector_list of @dev. @iter |
b982dab1 | 632 | * must always be cleaned up again by calling drm_connector_list_iter_end(). |
613051da DV |
633 | * Iteration itself happens using drm_connector_list_iter_next() or |
634 | * drm_for_each_connector_iter(). | |
635 | */ | |
b982dab1 TR |
636 | void drm_connector_list_iter_begin(struct drm_device *dev, |
637 | struct drm_connector_list_iter *iter) | |
613051da DV |
638 | { |
639 | iter->dev = dev; | |
640 | iter->conn = NULL; | |
641 | lock_acquire_shared_recursive(&connector_list_iter_dep_map, 0, 1, NULL, _RET_IP_); | |
642 | } | |
b982dab1 | 643 | EXPORT_SYMBOL(drm_connector_list_iter_begin); |
613051da | 644 | |
a703c550 DV |
645 | /* |
646 | * Extra-safe connector put function that works in any context. Should only be | |
647 | * used from the connector_iter functions, where we never really expect to | |
648 | * actually release the connector when dropping our final reference. | |
649 | */ | |
650 | static void | |
ea497bb9 | 651 | __drm_connector_put_safe(struct drm_connector *conn) |
a703c550 | 652 | { |
ea497bb9 DV |
653 | struct drm_mode_config *config = &conn->dev->mode_config; |
654 | ||
655 | lockdep_assert_held(&config->connector_list_lock); | |
656 | ||
657 | if (!refcount_dec_and_test(&conn->base.refcount.refcount)) | |
658 | return; | |
659 | ||
660 | llist_add(&conn->free_node, &config->connector_free_list); | |
661 | schedule_work(&config->connector_free_work); | |
a703c550 DV |
662 | } |
663 | ||
613051da DV |
664 | /** |
665 | * drm_connector_list_iter_next - return next connector | |
4f45c778 | 666 | * @iter: connector_list iterator |
613051da DV |
667 | * |
668 | * Returns the next connector for @iter, or NULL when the list walk has | |
669 | * completed. | |
670 | */ | |
671 | struct drm_connector * | |
672 | drm_connector_list_iter_next(struct drm_connector_list_iter *iter) | |
673 | { | |
674 | struct drm_connector *old_conn = iter->conn; | |
675 | struct drm_mode_config *config = &iter->dev->mode_config; | |
676 | struct list_head *lhead; | |
677 | unsigned long flags; | |
678 | ||
679 | spin_lock_irqsave(&config->connector_list_lock, flags); | |
680 | lhead = old_conn ? &old_conn->head : &config->connector_list; | |
681 | ||
682 | do { | |
683 | if (lhead->next == &config->connector_list) { | |
684 | iter->conn = NULL; | |
685 | break; | |
686 | } | |
687 | ||
688 | lhead = lhead->next; | |
689 | iter->conn = list_entry(lhead, struct drm_connector, head); | |
690 | ||
691 | /* loop until it's not a zombie connector */ | |
692 | } while (!kref_get_unless_zero(&iter->conn->base.refcount)); | |
613051da DV |
693 | |
694 | if (old_conn) | |
ea497bb9 DV |
695 | __drm_connector_put_safe(old_conn); |
696 | spin_unlock_irqrestore(&config->connector_list_lock, flags); | |
613051da DV |
697 | |
698 | return iter->conn; | |
699 | } | |
700 | EXPORT_SYMBOL(drm_connector_list_iter_next); | |
701 | ||
702 | /** | |
b982dab1 | 703 | * drm_connector_list_iter_end - tear down a connector_list iterator |
613051da DV |
704 | * @iter: connector_list iterator |
705 | * | |
706 | * Tears down @iter and releases any resources (like &drm_connector references) | |
707 | * acquired while walking the list. This must always be called, both when the | |
708 | * iteration completes fully or when it was aborted without walking the entire | |
709 | * list. | |
710 | */ | |
b982dab1 | 711 | void drm_connector_list_iter_end(struct drm_connector_list_iter *iter) |
613051da | 712 | { |
ea497bb9 DV |
713 | struct drm_mode_config *config = &iter->dev->mode_config; |
714 | unsigned long flags; | |
715 | ||
613051da | 716 | iter->dev = NULL; |
ea497bb9 DV |
717 | if (iter->conn) { |
718 | spin_lock_irqsave(&config->connector_list_lock, flags); | |
719 | __drm_connector_put_safe(iter->conn); | |
720 | spin_unlock_irqrestore(&config->connector_list_lock, flags); | |
721 | } | |
613051da DV |
722 | lock_release(&connector_list_iter_dep_map, 0, _RET_IP_); |
723 | } | |
b982dab1 | 724 | EXPORT_SYMBOL(drm_connector_list_iter_end); |
613051da | 725 | |
52217195 DV |
726 | static const struct drm_prop_enum_list drm_subpixel_enum_list[] = { |
727 | { SubPixelUnknown, "Unknown" }, | |
728 | { SubPixelHorizontalRGB, "Horizontal RGB" }, | |
729 | { SubPixelHorizontalBGR, "Horizontal BGR" }, | |
730 | { SubPixelVerticalRGB, "Vertical RGB" }, | |
731 | { SubPixelVerticalBGR, "Vertical BGR" }, | |
732 | { SubPixelNone, "None" }, | |
733 | }; | |
734 | ||
735 | /** | |
736 | * drm_get_subpixel_order_name - return a string for a given subpixel enum | |
737 | * @order: enum of subpixel_order | |
738 | * | |
739 | * Note you could abuse this and return something out of bounds, but that | |
740 | * would be a caller error. No unscrubbed user data should make it here. | |
741 | */ | |
742 | const char *drm_get_subpixel_order_name(enum subpixel_order order) | |
743 | { | |
744 | return drm_subpixel_enum_list[order].name; | |
745 | } | |
746 | EXPORT_SYMBOL(drm_get_subpixel_order_name); | |
747 | ||
748 | static const struct drm_prop_enum_list drm_dpms_enum_list[] = { | |
749 | { DRM_MODE_DPMS_ON, "On" }, | |
750 | { DRM_MODE_DPMS_STANDBY, "Standby" }, | |
751 | { DRM_MODE_DPMS_SUSPEND, "Suspend" }, | |
752 | { DRM_MODE_DPMS_OFF, "Off" } | |
753 | }; | |
754 | DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list) | |
755 | ||
40ee6fbe MN |
756 | static const struct drm_prop_enum_list drm_link_status_enum_list[] = { |
757 | { DRM_MODE_LINK_STATUS_GOOD, "Good" }, | |
758 | { DRM_MODE_LINK_STATUS_BAD, "Bad" }, | |
759 | }; | |
40ee6fbe | 760 | |
b3c6c8bf DV |
761 | /** |
762 | * drm_display_info_set_bus_formats - set the supported bus formats | |
763 | * @info: display info to store bus formats in | |
764 | * @formats: array containing the supported bus formats | |
765 | * @num_formats: the number of entries in the fmts array | |
766 | * | |
767 | * Store the supported bus formats in display info structure. | |
768 | * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for | |
769 | * a full list of available formats. | |
770 | */ | |
771 | int drm_display_info_set_bus_formats(struct drm_display_info *info, | |
772 | const u32 *formats, | |
773 | unsigned int num_formats) | |
774 | { | |
775 | u32 *fmts = NULL; | |
776 | ||
777 | if (!formats && num_formats) | |
778 | return -EINVAL; | |
779 | ||
780 | if (formats && num_formats) { | |
781 | fmts = kmemdup(formats, sizeof(*formats) * num_formats, | |
782 | GFP_KERNEL); | |
783 | if (!fmts) | |
784 | return -ENOMEM; | |
785 | } | |
786 | ||
787 | kfree(info->bus_formats); | |
788 | info->bus_formats = fmts; | |
789 | info->num_bus_formats = num_formats; | |
790 | ||
791 | return 0; | |
792 | } | |
793 | EXPORT_SYMBOL(drm_display_info_set_bus_formats); | |
794 | ||
52217195 DV |
795 | /* Optional connector properties. */ |
796 | static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] = { | |
797 | { DRM_MODE_SCALE_NONE, "None" }, | |
798 | { DRM_MODE_SCALE_FULLSCREEN, "Full" }, | |
799 | { DRM_MODE_SCALE_CENTER, "Center" }, | |
800 | { DRM_MODE_SCALE_ASPECT, "Full aspect" }, | |
801 | }; | |
802 | ||
803 | static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = { | |
804 | { DRM_MODE_PICTURE_ASPECT_NONE, "Automatic" }, | |
805 | { DRM_MODE_PICTURE_ASPECT_4_3, "4:3" }, | |
806 | { DRM_MODE_PICTURE_ASPECT_16_9, "16:9" }, | |
807 | }; | |
808 | ||
50525c33 SL |
809 | static const struct drm_prop_enum_list drm_content_type_enum_list[] = { |
810 | { DRM_MODE_CONTENT_TYPE_NO_DATA, "No Data" }, | |
811 | { DRM_MODE_CONTENT_TYPE_GRAPHICS, "Graphics" }, | |
812 | { DRM_MODE_CONTENT_TYPE_PHOTO, "Photo" }, | |
813 | { DRM_MODE_CONTENT_TYPE_CINEMA, "Cinema" }, | |
814 | { DRM_MODE_CONTENT_TYPE_GAME, "Game" }, | |
815 | }; | |
816 | ||
8d70f395 HG |
817 | static const struct drm_prop_enum_list drm_panel_orientation_enum_list[] = { |
818 | { DRM_MODE_PANEL_ORIENTATION_NORMAL, "Normal" }, | |
819 | { DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP, "Upside Down" }, | |
820 | { DRM_MODE_PANEL_ORIENTATION_LEFT_UP, "Left Side Up" }, | |
821 | { DRM_MODE_PANEL_ORIENTATION_RIGHT_UP, "Right Side Up" }, | |
822 | }; | |
823 | ||
52217195 DV |
824 | static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = { |
825 | { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ | |
826 | { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ | |
827 | { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ | |
828 | }; | |
829 | DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list) | |
830 | ||
831 | static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = { | |
832 | { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */ | |
833 | { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ | |
834 | { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ | |
835 | }; | |
836 | DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name, | |
837 | drm_dvi_i_subconnector_enum_list) | |
838 | ||
839 | static const struct drm_prop_enum_list drm_tv_select_enum_list[] = { | |
840 | { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ | |
841 | { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ | |
842 | { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ | |
843 | { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ | |
844 | { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ | |
845 | }; | |
846 | DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list) | |
847 | ||
848 | static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = { | |
849 | { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */ | |
850 | { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ | |
851 | { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ | |
852 | { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ | |
853 | { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ | |
854 | }; | |
855 | DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name, | |
856 | drm_tv_subconnector_enum_list) | |
857 | ||
d2c6a405 US |
858 | static const struct drm_prop_enum_list hdmi_colorspaces[] = { |
859 | /* For Default case, driver will set the colorspace */ | |
860 | { DRM_MODE_COLORIMETRY_DEFAULT, "Default" }, | |
861 | /* Standard Definition Colorimetry based on CEA 861 */ | |
862 | { DRM_MODE_COLORIMETRY_SMPTE_170M_YCC, "SMPTE_170M_YCC" }, | |
863 | { DRM_MODE_COLORIMETRY_BT709_YCC, "BT709_YCC" }, | |
864 | /* Standard Definition Colorimetry based on IEC 61966-2-4 */ | |
865 | { DRM_MODE_COLORIMETRY_XVYCC_601, "XVYCC_601" }, | |
866 | /* High Definition Colorimetry based on IEC 61966-2-4 */ | |
867 | { DRM_MODE_COLORIMETRY_XVYCC_709, "XVYCC_709" }, | |
868 | /* Colorimetry based on IEC 61966-2-1/Amendment 1 */ | |
869 | { DRM_MODE_COLORIMETRY_SYCC_601, "SYCC_601" }, | |
870 | /* Colorimetry based on IEC 61966-2-5 [33] */ | |
871 | { DRM_MODE_COLORIMETRY_OPYCC_601, "opYCC_601" }, | |
872 | /* Colorimetry based on IEC 61966-2-5 */ | |
873 | { DRM_MODE_COLORIMETRY_OPRGB, "opRGB" }, | |
874 | /* Colorimetry based on ITU-R BT.2020 */ | |
875 | { DRM_MODE_COLORIMETRY_BT2020_CYCC, "BT2020_CYCC" }, | |
876 | /* Colorimetry based on ITU-R BT.2020 */ | |
877 | { DRM_MODE_COLORIMETRY_BT2020_RGB, "BT2020_RGB" }, | |
878 | /* Colorimetry based on ITU-R BT.2020 */ | |
879 | { DRM_MODE_COLORIMETRY_BT2020_YCC, "BT2020_YCC" }, | |
880 | /* Added as part of Additional Colorimetry Extension in 861.G */ | |
881 | { DRM_MODE_COLORIMETRY_DCI_P3_RGB_D65, "DCI-P3_RGB_D65" }, | |
882 | { DRM_MODE_COLORIMETRY_DCI_P3_RGB_THEATER, "DCI-P3_RGB_Theater" }, | |
883 | }; | |
884 | ||
4ada6f22 DV |
885 | /** |
886 | * DOC: standard connector properties | |
887 | * | |
888 | * DRM connectors have a few standardized properties: | |
889 | * | |
890 | * EDID: | |
891 | * Blob property which contains the current EDID read from the sink. This | |
892 | * is useful to parse sink identification information like vendor, model | |
893 | * and serial. Drivers should update this property by calling | |
c555f023 | 894 | * drm_connector_update_edid_property(), usually after having parsed |
4ada6f22 DV |
895 | * the EDID using drm_add_edid_modes(). Userspace cannot change this |
896 | * property. | |
897 | * DPMS: | |
898 | * Legacy property for setting the power state of the connector. For atomic | |
899 | * drivers this is only provided for backwards compatibility with existing | |
900 | * drivers, it remaps to controlling the "ACTIVE" property on the CRTC the | |
901 | * connector is linked to. Drivers should never set this property directly, | |
d574528a | 902 | * it is handled by the DRM core by calling the &drm_connector_funcs.dpms |
144a7999 DV |
903 | * callback. For atomic drivers the remapping to the "ACTIVE" property is |
904 | * implemented in the DRM core. This is the only standard connector | |
905 | * property that userspace can change. | |
d0d1aee5 DV |
906 | * |
907 | * Note that this property cannot be set through the MODE_ATOMIC ioctl, | |
908 | * userspace must use "ACTIVE" on the CRTC instead. | |
909 | * | |
910 | * WARNING: | |
911 | * | |
912 | * For userspace also running on legacy drivers the "DPMS" semantics are a | |
913 | * lot more complicated. First, userspace cannot rely on the "DPMS" value | |
914 | * returned by the GETCONNECTOR actually reflecting reality, because many | |
915 | * drivers fail to update it. For atomic drivers this is taken care of in | |
916 | * drm_atomic_helper_update_legacy_modeset_state(). | |
917 | * | |
918 | * The second issue is that the DPMS state is only well-defined when the | |
919 | * connector is connected to a CRTC. In atomic the DRM core enforces that | |
920 | * "ACTIVE" is off in such a case, no such checks exists for "DPMS". | |
921 | * | |
922 | * Finally, when enabling an output using the legacy SETCONFIG ioctl then | |
923 | * "DPMS" is forced to ON. But see above, that might not be reflected in | |
924 | * the software value on legacy drivers. | |
925 | * | |
926 | * Summarizing: Only set "DPMS" when the connector is known to be enabled, | |
927 | * assume that a successful SETCONFIG call also sets "DPMS" to on, and | |
928 | * never read back the value of "DPMS" because it can be incorrect. | |
4ada6f22 DV |
929 | * PATH: |
930 | * Connector path property to identify how this sink is physically | |
931 | * connected. Used by DP MST. This should be set by calling | |
97e14fbe | 932 | * drm_connector_set_path_property(), in the case of DP MST with the |
4ada6f22 DV |
933 | * path property the MST manager created. Userspace cannot change this |
934 | * property. | |
935 | * TILE: | |
936 | * Connector tile group property to indicate how a set of DRM connector | |
937 | * compose together into one logical screen. This is used by both high-res | |
938 | * external screens (often only using a single cable, but exposing multiple | |
939 | * DP MST sinks), or high-res integrated panels (like dual-link DSI) which | |
940 | * are not gen-locked. Note that for tiled panels which are genlocked, like | |
941 | * dual-link LVDS or dual-link DSI, the driver should try to not expose the | |
942 | * tiling and virtualize both &drm_crtc and &drm_plane if needed. Drivers | |
97e14fbe | 943 | * should update this value using drm_connector_set_tile_property(). |
4ada6f22 | 944 | * Userspace cannot change this property. |
40ee6fbe | 945 | * link-status: |
716719a3 SP |
946 | * Connector link-status property to indicate the status of link. The |
947 | * default value of link-status is "GOOD". If something fails during or | |
948 | * after modeset, the kernel driver may set this to "BAD" and issue a | |
949 | * hotplug uevent. Drivers should update this value using | |
97e14fbe | 950 | * drm_connector_set_link_status_property(). |
66660d4c DA |
951 | * non_desktop: |
952 | * Indicates the output should be ignored for purposes of displaying a | |
953 | * standard desktop environment or console. This is most likely because | |
954 | * the output device is not rectilinear. | |
24557865 SP |
955 | * Content Protection: |
956 | * This property is used by userspace to request the kernel protect future | |
957 | * content communicated over the link. When requested, kernel will apply | |
958 | * the appropriate means of protection (most often HDCP), and use the | |
959 | * property to tell userspace the protection is active. | |
960 | * | |
961 | * Drivers can set this up by calling | |
962 | * drm_connector_attach_content_protection_property() on initialization. | |
963 | * | |
964 | * The value of this property can be one of the following: | |
965 | * | |
bbeba09f | 966 | * DRM_MODE_CONTENT_PROTECTION_UNDESIRED = 0 |
24557865 | 967 | * The link is not protected, content is transmitted in the clear. |
bbeba09f | 968 | * DRM_MODE_CONTENT_PROTECTION_DESIRED = 1 |
24557865 SP |
969 | * Userspace has requested content protection, but the link is not |
970 | * currently protected. When in this state, kernel should enable | |
971 | * Content Protection as soon as possible. | |
bbeba09f | 972 | * DRM_MODE_CONTENT_PROTECTION_ENABLED = 2 |
24557865 SP |
973 | * Userspace has requested content protection, and the link is |
974 | * protected. Only the driver can set the property to this value. | |
975 | * If userspace attempts to set to ENABLED, kernel will return | |
976 | * -EINVAL. | |
977 | * | |
978 | * A few guidelines: | |
979 | * | |
980 | * - DESIRED state should be preserved until userspace de-asserts it by | |
981 | * setting the property to UNDESIRED. This means ENABLED should only | |
982 | * transition to UNDESIRED when the user explicitly requests it. | |
983 | * - If the state is DESIRED, kernel should attempt to re-authenticate the | |
984 | * link whenever possible. This includes across disable/enable, dpms, | |
985 | * hotplug, downstream device changes, link status failures, etc.. | |
bb5a45d4 R |
986 | * - Kernel sends uevent with the connector id and property id through |
987 | * @drm_hdcp_update_content_protection, upon below kernel triggered | |
988 | * scenarios: | |
12db36bc SP |
989 | * |
990 | * - DESIRED -> ENABLED (authentication success) | |
991 | * - ENABLED -> DESIRED (termination of authentication) | |
bb5a45d4 R |
992 | * - Please note no uevents for userspace triggered property state changes, |
993 | * which can't fail such as | |
12db36bc SP |
994 | * |
995 | * - DESIRED/ENABLED -> UNDESIRED | |
996 | * - UNDESIRED -> DESIRED | |
bb5a45d4 R |
997 | * - Userspace is responsible for polling the property or listen to uevents |
998 | * to determine when the value transitions from ENABLED to DESIRED. | |
999 | * This signifies the link is no longer protected and userspace should | |
1000 | * take appropriate action (whatever that might be). | |
4ada6f22 | 1001 | * |
7672dbba R |
1002 | * HDCP Content Type: |
1003 | * This Enum property is used by the userspace to declare the content type | |
1004 | * of the display stream, to kernel. Here display stream stands for any | |
1005 | * display content that userspace intended to display through HDCP | |
1006 | * encryption. | |
1007 | * | |
1008 | * Content Type of a stream is decided by the owner of the stream, as | |
1009 | * "HDCP Type0" or "HDCP Type1". | |
1010 | * | |
1011 | * The value of the property can be one of the below: | |
1012 | * - "HDCP Type0": DRM_MODE_HDCP_CONTENT_TYPE0 = 0 | |
1013 | * - "HDCP Type1": DRM_MODE_HDCP_CONTENT_TYPE1 = 1 | |
1014 | * | |
1015 | * When kernel starts the HDCP authentication (see "Content Protection" | |
1016 | * for details), it uses the content type in "HDCP Content Type" | |
1017 | * for performing the HDCP authentication with the display sink. | |
1018 | * | |
1019 | * Please note in HDCP spec versions, a link can be authenticated with | |
1020 | * HDCP 2.2 for Content Type 0/Content Type 1. Where as a link can be | |
1021 | * authenticated with HDCP1.4 only for Content Type 0(though it is implicit | |
1022 | * in nature. As there is no reference for Content Type in HDCP1.4). | |
1023 | * | |
1024 | * HDCP2.2 authentication protocol itself takes the "Content Type" as a | |
1025 | * parameter, which is a input for the DP HDCP2.2 encryption algo. | |
1026 | * | |
1027 | * In case of Type 0 content protection request, kernel driver can choose | |
1028 | * either of HDCP spec versions 1.4 and 2.2. When HDCP2.2 is used for | |
1029 | * "HDCP Type 0", a HDCP 2.2 capable repeater in the downstream can send | |
1030 | * that content to a HDCP 1.4 authenticated HDCP sink (Type0 link). | |
1031 | * But if the content is classified as "HDCP Type 1", above mentioned | |
1032 | * HDCP 2.2 repeater wont send the content to the HDCP sink as it can't | |
1033 | * authenticate the HDCP1.4 capable sink for "HDCP Type 1". | |
1034 | * | |
1035 | * Please note userspace can be ignorant of the HDCP versions used by the | |
1036 | * kernel driver to achieve the "HDCP Content Type". | |
1037 | * | |
1038 | * At current scenario, classifying a content as Type 1 ensures that the | |
1039 | * content will be displayed only through the HDCP2.2 encrypted link. | |
1040 | * | |
1041 | * Note that the HDCP Content Type property is introduced at HDCP 2.2, and | |
1042 | * defaults to type 0. It is only exposed by drivers supporting HDCP 2.2 | |
1043 | * (hence supporting Type 0 and Type 1). Based on how next versions of | |
1044 | * HDCP specs are defined content Type could be used for higher versions | |
1045 | * too. | |
1046 | * | |
1047 | * If content type is changed when "Content Protection" is not UNDESIRED, | |
1048 | * then kernel will disable the HDCP and re-enable with new type in the | |
1049 | * same atomic commit. And when "Content Protection" is ENABLED, it means | |
1050 | * that link is HDCP authenticated and encrypted, for the transmission of | |
1051 | * the Type of stream mentioned at "HDCP Content Type". | |
1052 | * | |
a09db883 US |
1053 | * HDR_OUTPUT_METADATA: |
1054 | * Connector property to enable userspace to send HDR Metadata to | |
1055 | * driver. This metadata is based on the composition and blending | |
1056 | * policies decided by user, taking into account the hardware and | |
1057 | * sink capabilities. The driver gets this metadata and creates a | |
1058 | * Dynamic Range and Mastering Infoframe (DRM) in case of HDMI, | |
1059 | * SDP packet (Non-audio INFOFRAME SDP v1.3) for DP. This is then | |
1060 | * sent to sink. This notifies the sink of the upcoming frame's Color | |
1061 | * Encoding and Luminance parameters. | |
1062 | * | |
1063 | * Userspace first need to detect the HDR capabilities of sink by | |
1064 | * reading and parsing the EDID. Details of HDR metadata for HDMI | |
1065 | * are added in CTA 861.G spec. For DP , its defined in VESA DP | |
1066 | * Standard v1.4. It needs to then get the metadata information | |
1067 | * of the video/game/app content which are encoded in HDR (basically | |
1068 | * using HDR transfer functions). With this information it needs to | |
1069 | * decide on a blending policy and compose the relevant | |
1070 | * layers/overlays into a common format. Once this blending is done, | |
1071 | * userspace will be aware of the metadata of the composed frame to | |
1072 | * be send to sink. It then uses this property to communicate this | |
1073 | * metadata to driver which then make a Infoframe packet and sends | |
1074 | * to sink based on the type of encoder connected. | |
1075 | * | |
1076 | * Userspace will be responsible to do Tone mapping operation in case: | |
1077 | * - Some layers are HDR and others are SDR | |
1078 | * - HDR layers luminance is not same as sink | |
9f9b2559 | 1079 | * |
a09db883 US |
1080 | * It will even need to do colorspace conversion and get all layers |
1081 | * to one common colorspace for blending. It can use either GL, Media | |
1082 | * or display engine to get this done based on the capabilties of the | |
1083 | * associated hardware. | |
1084 | * | |
1085 | * Driver expects metadata to be put in &struct hdr_output_metadata | |
1086 | * structure from userspace. This is received as blob and stored in | |
1087 | * &drm_connector_state.hdr_output_metadata. It parses EDID and saves the | |
1088 | * sink metadata in &struct hdr_sink_metadata, as | |
1089 | * &drm_connector.hdr_sink_metadata. Driver uses | |
1090 | * drm_hdmi_infoframe_set_hdr_metadata() helper to set the HDR metadata, | |
1091 | * hdmi_drm_infoframe_pack() to pack the infoframe as per spec, in case of | |
1092 | * HDMI encoder. | |
1093 | * | |
47e22ff1 RS |
1094 | * max bpc: |
1095 | * This range property is used by userspace to limit the bit depth. When | |
1096 | * used the driver would limit the bpc in accordance with the valid range | |
1097 | * supported by the hardware and sink. Drivers to use the function | |
1098 | * drm_connector_attach_max_bpc_property() to create and attach the | |
1099 | * property to the connector during initialization. | |
1100 | * | |
4ada6f22 DV |
1101 | * Connectors also have one standardized atomic property: |
1102 | * | |
1103 | * CRTC_ID: | |
1104 | * Mode object ID of the &drm_crtc this connector should be connected to. | |
8d70f395 HG |
1105 | * |
1106 | * Connectors for LCD panels may also have one standardized property: | |
1107 | * | |
1108 | * panel orientation: | |
1109 | * On some devices the LCD panel is mounted in the casing in such a way | |
1110 | * that the up/top side of the panel does not match with the top side of | |
1111 | * the device. Userspace can use this property to check for this. | |
1112 | * Note that input coordinates from touchscreens (input devices with | |
1113 | * INPUT_PROP_DIRECT) will still map 1:1 to the actual LCD panel | |
1114 | * coordinates, so if userspace rotates the picture to adjust for | |
1115 | * the orientation it must also apply the same transformation to the | |
bbeba09f DV |
1116 | * touchscreen input coordinates. This property is initialized by calling |
1117 | * drm_connector_init_panel_orientation_property(). | |
1118 | * | |
1119 | * scaling mode: | |
1120 | * This property defines how a non-native mode is upscaled to the native | |
1121 | * mode of an LCD panel: | |
1122 | * | |
1123 | * None: | |
1124 | * No upscaling happens, scaling is left to the panel. Not all | |
1125 | * drivers expose this mode. | |
1126 | * Full: | |
1127 | * The output is upscaled to the full resolution of the panel, | |
1128 | * ignoring the aspect ratio. | |
1129 | * Center: | |
1130 | * No upscaling happens, the output is centered within the native | |
1131 | * resolution the panel. | |
1132 | * Full aspect: | |
1133 | * The output is upscaled to maximize either the width or height | |
1134 | * while retaining the aspect ratio. | |
1135 | * | |
1136 | * This property should be set up by calling | |
1137 | * drm_connector_attach_scaling_mode_property(). Note that drivers | |
1138 | * can also expose this property to external outputs, in which case they | |
1139 | * must support "None", which should be the default (since external screens | |
1140 | * have a built-in scaler). | |
4ada6f22 DV |
1141 | */ |
1142 | ||
52217195 DV |
1143 | int drm_connector_create_standard_properties(struct drm_device *dev) |
1144 | { | |
1145 | struct drm_property *prop; | |
1146 | ||
1147 | prop = drm_property_create(dev, DRM_MODE_PROP_BLOB | | |
1148 | DRM_MODE_PROP_IMMUTABLE, | |
1149 | "EDID", 0); | |
1150 | if (!prop) | |
1151 | return -ENOMEM; | |
1152 | dev->mode_config.edid_property = prop; | |
1153 | ||
1154 | prop = drm_property_create_enum(dev, 0, | |
1155 | "DPMS", drm_dpms_enum_list, | |
1156 | ARRAY_SIZE(drm_dpms_enum_list)); | |
1157 | if (!prop) | |
1158 | return -ENOMEM; | |
1159 | dev->mode_config.dpms_property = prop; | |
1160 | ||
1161 | prop = drm_property_create(dev, | |
1162 | DRM_MODE_PROP_BLOB | | |
1163 | DRM_MODE_PROP_IMMUTABLE, | |
1164 | "PATH", 0); | |
1165 | if (!prop) | |
1166 | return -ENOMEM; | |
1167 | dev->mode_config.path_property = prop; | |
1168 | ||
1169 | prop = drm_property_create(dev, | |
1170 | DRM_MODE_PROP_BLOB | | |
1171 | DRM_MODE_PROP_IMMUTABLE, | |
1172 | "TILE", 0); | |
1173 | if (!prop) | |
1174 | return -ENOMEM; | |
1175 | dev->mode_config.tile_property = prop; | |
1176 | ||
40ee6fbe MN |
1177 | prop = drm_property_create_enum(dev, 0, "link-status", |
1178 | drm_link_status_enum_list, | |
1179 | ARRAY_SIZE(drm_link_status_enum_list)); | |
1180 | if (!prop) | |
1181 | return -ENOMEM; | |
1182 | dev->mode_config.link_status_property = prop; | |
1183 | ||
66660d4c DA |
1184 | prop = drm_property_create_bool(dev, DRM_MODE_PROP_IMMUTABLE, "non-desktop"); |
1185 | if (!prop) | |
1186 | return -ENOMEM; | |
1187 | dev->mode_config.non_desktop_property = prop; | |
1188 | ||
fbb5d035 US |
1189 | prop = drm_property_create(dev, DRM_MODE_PROP_BLOB, |
1190 | "HDR_OUTPUT_METADATA", 0); | |
1191 | if (!prop) | |
1192 | return -ENOMEM; | |
1193 | dev->mode_config.hdr_output_metadata_property = prop; | |
1194 | ||
52217195 DV |
1195 | return 0; |
1196 | } | |
1197 | ||
1198 | /** | |
1199 | * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties | |
1200 | * @dev: DRM device | |
1201 | * | |
1202 | * Called by a driver the first time a DVI-I connector is made. | |
1203 | */ | |
1204 | int drm_mode_create_dvi_i_properties(struct drm_device *dev) | |
1205 | { | |
1206 | struct drm_property *dvi_i_selector; | |
1207 | struct drm_property *dvi_i_subconnector; | |
1208 | ||
1209 | if (dev->mode_config.dvi_i_select_subconnector_property) | |
1210 | return 0; | |
1211 | ||
1212 | dvi_i_selector = | |
1213 | drm_property_create_enum(dev, 0, | |
1214 | "select subconnector", | |
1215 | drm_dvi_i_select_enum_list, | |
1216 | ARRAY_SIZE(drm_dvi_i_select_enum_list)); | |
1217 | dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector; | |
1218 | ||
1219 | dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, | |
1220 | "subconnector", | |
1221 | drm_dvi_i_subconnector_enum_list, | |
1222 | ARRAY_SIZE(drm_dvi_i_subconnector_enum_list)); | |
1223 | dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector; | |
1224 | ||
1225 | return 0; | |
1226 | } | |
1227 | EXPORT_SYMBOL(drm_mode_create_dvi_i_properties); | |
1228 | ||
50525c33 SL |
1229 | /** |
1230 | * DOC: HDMI connector properties | |
1231 | * | |
1232 | * content type (HDMI specific): | |
1233 | * Indicates content type setting to be used in HDMI infoframes to indicate | |
1e55a53a | 1234 | * content type for the external device, so that it adjusts its display |
50525c33 SL |
1235 | * settings accordingly. |
1236 | * | |
1237 | * The value of this property can be one of the following: | |
1238 | * | |
1239 | * No Data: | |
1240 | * Content type is unknown | |
1241 | * Graphics: | |
1242 | * Content type is graphics | |
1243 | * Photo: | |
1244 | * Content type is photo | |
1245 | * Cinema: | |
1246 | * Content type is cinema | |
1247 | * Game: | |
1248 | * Content type is game | |
1249 | * | |
1250 | * Drivers can set up this property by calling | |
1251 | * drm_connector_attach_content_type_property(). Decoding to | |
ba609631 | 1252 | * infoframe values is done through drm_hdmi_avi_infoframe_content_type(). |
50525c33 SL |
1253 | */ |
1254 | ||
1255 | /** | |
1256 | * drm_connector_attach_content_type_property - attach content-type property | |
1257 | * @connector: connector to attach content type property on. | |
1258 | * | |
1259 | * Called by a driver the first time a HDMI connector is made. | |
1260 | */ | |
1261 | int drm_connector_attach_content_type_property(struct drm_connector *connector) | |
1262 | { | |
1263 | if (!drm_mode_create_content_type_property(connector->dev)) | |
1264 | drm_object_attach_property(&connector->base, | |
1265 | connector->dev->mode_config.content_type_property, | |
1266 | DRM_MODE_CONTENT_TYPE_NO_DATA); | |
1267 | return 0; | |
1268 | } | |
1269 | EXPORT_SYMBOL(drm_connector_attach_content_type_property); | |
1270 | ||
1271 | ||
1272 | /** | |
1273 | * drm_hdmi_avi_infoframe_content_type() - fill the HDMI AVI infoframe | |
1274 | * content type information, based | |
1275 | * on correspondent DRM property. | |
1276 | * @frame: HDMI AVI infoframe | |
1277 | * @conn_state: DRM display connector state | |
1278 | * | |
1279 | */ | |
1280 | void drm_hdmi_avi_infoframe_content_type(struct hdmi_avi_infoframe *frame, | |
1281 | const struct drm_connector_state *conn_state) | |
1282 | { | |
1283 | switch (conn_state->content_type) { | |
1284 | case DRM_MODE_CONTENT_TYPE_GRAPHICS: | |
1285 | frame->content_type = HDMI_CONTENT_TYPE_GRAPHICS; | |
1286 | break; | |
1287 | case DRM_MODE_CONTENT_TYPE_CINEMA: | |
1288 | frame->content_type = HDMI_CONTENT_TYPE_CINEMA; | |
1289 | break; | |
1290 | case DRM_MODE_CONTENT_TYPE_GAME: | |
1291 | frame->content_type = HDMI_CONTENT_TYPE_GAME; | |
1292 | break; | |
1293 | case DRM_MODE_CONTENT_TYPE_PHOTO: | |
1294 | frame->content_type = HDMI_CONTENT_TYPE_PHOTO; | |
1295 | break; | |
1296 | default: | |
1297 | /* Graphics is the default(0) */ | |
1298 | frame->content_type = HDMI_CONTENT_TYPE_GRAPHICS; | |
1299 | } | |
1300 | ||
1301 | frame->itc = conn_state->content_type != DRM_MODE_CONTENT_TYPE_NO_DATA; | |
1302 | } | |
1303 | EXPORT_SYMBOL(drm_hdmi_avi_infoframe_content_type); | |
1304 | ||
52217195 | 1305 | /** |
6c4f52dc BB |
1306 | * drm_mode_attach_tv_margin_properties - attach TV connector margin properties |
1307 | * @connector: DRM connector | |
1308 | * | |
1309 | * Called by a driver when it needs to attach TV margin props to a connector. | |
1310 | * Typically used on SDTV and HDMI connectors. | |
1311 | */ | |
1312 | void drm_connector_attach_tv_margin_properties(struct drm_connector *connector) | |
1313 | { | |
1314 | struct drm_device *dev = connector->dev; | |
1315 | ||
1316 | drm_object_attach_property(&connector->base, | |
1317 | dev->mode_config.tv_left_margin_property, | |
1318 | 0); | |
1319 | drm_object_attach_property(&connector->base, | |
1320 | dev->mode_config.tv_right_margin_property, | |
1321 | 0); | |
1322 | drm_object_attach_property(&connector->base, | |
1323 | dev->mode_config.tv_top_margin_property, | |
1324 | 0); | |
1325 | drm_object_attach_property(&connector->base, | |
1326 | dev->mode_config.tv_bottom_margin_property, | |
1327 | 0); | |
1328 | } | |
1329 | EXPORT_SYMBOL(drm_connector_attach_tv_margin_properties); | |
1330 | ||
1331 | /** | |
1332 | * drm_mode_create_tv_margin_properties - create TV connector margin properties | |
1333 | * @dev: DRM device | |
1334 | * | |
1335 | * Called by a driver's HDMI connector initialization routine, this function | |
1336 | * creates the TV margin properties for a given device. No need to call this | |
1337 | * function for an SDTV connector, it's already called from | |
1338 | * drm_mode_create_tv_properties(). | |
1339 | */ | |
1340 | int drm_mode_create_tv_margin_properties(struct drm_device *dev) | |
1341 | { | |
1342 | if (dev->mode_config.tv_left_margin_property) | |
1343 | return 0; | |
1344 | ||
1345 | dev->mode_config.tv_left_margin_property = | |
1346 | drm_property_create_range(dev, 0, "left margin", 0, 100); | |
1347 | if (!dev->mode_config.tv_left_margin_property) | |
1348 | return -ENOMEM; | |
1349 | ||
1350 | dev->mode_config.tv_right_margin_property = | |
1351 | drm_property_create_range(dev, 0, "right margin", 0, 100); | |
1352 | if (!dev->mode_config.tv_right_margin_property) | |
1353 | return -ENOMEM; | |
1354 | ||
1355 | dev->mode_config.tv_top_margin_property = | |
1356 | drm_property_create_range(dev, 0, "top margin", 0, 100); | |
1357 | if (!dev->mode_config.tv_top_margin_property) | |
1358 | return -ENOMEM; | |
1359 | ||
1360 | dev->mode_config.tv_bottom_margin_property = | |
1361 | drm_property_create_range(dev, 0, "bottom margin", 0, 100); | |
1362 | if (!dev->mode_config.tv_bottom_margin_property) | |
1363 | return -ENOMEM; | |
1364 | ||
1365 | return 0; | |
1366 | } | |
1367 | EXPORT_SYMBOL(drm_mode_create_tv_margin_properties); | |
1368 | ||
52217195 | 1369 | /** |
eda6887f | 1370 | * drm_mode_create_tv_properties - create TV specific connector properties |
52217195 DV |
1371 | * @dev: DRM device |
1372 | * @num_modes: number of different TV formats (modes) supported | |
1373 | * @modes: array of pointers to strings containing name of each format | |
1374 | * | |
1375 | * Called by a driver's TV initialization routine, this function creates | |
1376 | * the TV specific connector properties for a given device. Caller is | |
1377 | * responsible for allocating a list of format names and passing them to | |
1378 | * this routine. | |
1379 | */ | |
1380 | int drm_mode_create_tv_properties(struct drm_device *dev, | |
1381 | unsigned int num_modes, | |
1382 | const char * const modes[]) | |
1383 | { | |
1384 | struct drm_property *tv_selector; | |
1385 | struct drm_property *tv_subconnector; | |
1386 | unsigned int i; | |
1387 | ||
1388 | if (dev->mode_config.tv_select_subconnector_property) | |
1389 | return 0; | |
1390 | ||
1391 | /* | |
1392 | * Basic connector properties | |
1393 | */ | |
1394 | tv_selector = drm_property_create_enum(dev, 0, | |
1395 | "select subconnector", | |
1396 | drm_tv_select_enum_list, | |
1397 | ARRAY_SIZE(drm_tv_select_enum_list)); | |
1398 | if (!tv_selector) | |
1399 | goto nomem; | |
1400 | ||
1401 | dev->mode_config.tv_select_subconnector_property = tv_selector; | |
1402 | ||
1403 | tv_subconnector = | |
1404 | drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, | |
1405 | "subconnector", | |
1406 | drm_tv_subconnector_enum_list, | |
1407 | ARRAY_SIZE(drm_tv_subconnector_enum_list)); | |
1408 | if (!tv_subconnector) | |
1409 | goto nomem; | |
1410 | dev->mode_config.tv_subconnector_property = tv_subconnector; | |
1411 | ||
1412 | /* | |
1413 | * Other, TV specific properties: margins & TV modes. | |
1414 | */ | |
6c4f52dc | 1415 | if (drm_mode_create_tv_margin_properties(dev)) |
52217195 DV |
1416 | goto nomem; |
1417 | ||
1418 | dev->mode_config.tv_mode_property = | |
1419 | drm_property_create(dev, DRM_MODE_PROP_ENUM, | |
1420 | "mode", num_modes); | |
1421 | if (!dev->mode_config.tv_mode_property) | |
1422 | goto nomem; | |
1423 | ||
1424 | for (i = 0; i < num_modes; i++) | |
30e9db6d | 1425 | drm_property_add_enum(dev->mode_config.tv_mode_property, |
52217195 DV |
1426 | i, modes[i]); |
1427 | ||
1428 | dev->mode_config.tv_brightness_property = | |
1429 | drm_property_create_range(dev, 0, "brightness", 0, 100); | |
1430 | if (!dev->mode_config.tv_brightness_property) | |
1431 | goto nomem; | |
1432 | ||
1433 | dev->mode_config.tv_contrast_property = | |
1434 | drm_property_create_range(dev, 0, "contrast", 0, 100); | |
1435 | if (!dev->mode_config.tv_contrast_property) | |
1436 | goto nomem; | |
1437 | ||
1438 | dev->mode_config.tv_flicker_reduction_property = | |
1439 | drm_property_create_range(dev, 0, "flicker reduction", 0, 100); | |
1440 | if (!dev->mode_config.tv_flicker_reduction_property) | |
1441 | goto nomem; | |
1442 | ||
1443 | dev->mode_config.tv_overscan_property = | |
1444 | drm_property_create_range(dev, 0, "overscan", 0, 100); | |
1445 | if (!dev->mode_config.tv_overscan_property) | |
1446 | goto nomem; | |
1447 | ||
1448 | dev->mode_config.tv_saturation_property = | |
1449 | drm_property_create_range(dev, 0, "saturation", 0, 100); | |
1450 | if (!dev->mode_config.tv_saturation_property) | |
1451 | goto nomem; | |
1452 | ||
1453 | dev->mode_config.tv_hue_property = | |
1454 | drm_property_create_range(dev, 0, "hue", 0, 100); | |
1455 | if (!dev->mode_config.tv_hue_property) | |
1456 | goto nomem; | |
1457 | ||
1458 | return 0; | |
1459 | nomem: | |
1460 | return -ENOMEM; | |
1461 | } | |
1462 | EXPORT_SYMBOL(drm_mode_create_tv_properties); | |
1463 | ||
1464 | /** | |
1465 | * drm_mode_create_scaling_mode_property - create scaling mode property | |
1466 | * @dev: DRM device | |
1467 | * | |
1468 | * Called by a driver the first time it's needed, must be attached to desired | |
1469 | * connectors. | |
8f6e1e22 ML |
1470 | * |
1471 | * Atomic drivers should use drm_connector_attach_scaling_mode_property() | |
1472 | * instead to correctly assign &drm_connector_state.picture_aspect_ratio | |
1473 | * in the atomic state. | |
52217195 DV |
1474 | */ |
1475 | int drm_mode_create_scaling_mode_property(struct drm_device *dev) | |
1476 | { | |
1477 | struct drm_property *scaling_mode; | |
1478 | ||
1479 | if (dev->mode_config.scaling_mode_property) | |
1480 | return 0; | |
1481 | ||
1482 | scaling_mode = | |
1483 | drm_property_create_enum(dev, 0, "scaling mode", | |
1484 | drm_scaling_mode_enum_list, | |
1485 | ARRAY_SIZE(drm_scaling_mode_enum_list)); | |
1486 | ||
1487 | dev->mode_config.scaling_mode_property = scaling_mode; | |
1488 | ||
1489 | return 0; | |
1490 | } | |
1491 | EXPORT_SYMBOL(drm_mode_create_scaling_mode_property); | |
1492 | ||
ab7a664f NK |
1493 | /** |
1494 | * DOC: Variable refresh properties | |
1495 | * | |
1496 | * Variable refresh rate capable displays can dynamically adjust their | |
1497 | * refresh rate by extending the duration of their vertical front porch | |
1498 | * until page flip or timeout occurs. This can reduce or remove stuttering | |
1499 | * and latency in scenarios where the page flip does not align with the | |
1500 | * vblank interval. | |
1501 | * | |
1502 | * An example scenario would be an application flipping at a constant rate | |
1503 | * of 48Hz on a 60Hz display. The page flip will frequently miss the vblank | |
1504 | * interval and the same contents will be displayed twice. This can be | |
1505 | * observed as stuttering for content with motion. | |
1506 | * | |
1507 | * If variable refresh rate was active on a display that supported a | |
1508 | * variable refresh range from 35Hz to 60Hz no stuttering would be observable | |
1509 | * for the example scenario. The minimum supported variable refresh rate of | |
1510 | * 35Hz is below the page flip frequency and the vertical front porch can | |
1511 | * be extended until the page flip occurs. The vblank interval will be | |
1512 | * directly aligned to the page flip rate. | |
1513 | * | |
1514 | * Not all userspace content is suitable for use with variable refresh rate. | |
1515 | * Large and frequent changes in vertical front porch duration may worsen | |
1516 | * perceived stuttering for input sensitive applications. | |
1517 | * | |
1518 | * Panel brightness will also vary with vertical front porch duration. Some | |
1519 | * panels may have noticeable differences in brightness between the minimum | |
1520 | * vertical front porch duration and the maximum vertical front porch duration. | |
1521 | * Large and frequent changes in vertical front porch duration may produce | |
1522 | * observable flickering for such panels. | |
1523 | * | |
1524 | * Userspace control for variable refresh rate is supported via properties | |
1525 | * on the &drm_connector and &drm_crtc objects. | |
1526 | * | |
1527 | * "vrr_capable": | |
1528 | * Optional &drm_connector boolean property that drivers should attach | |
1529 | * with drm_connector_attach_vrr_capable_property() on connectors that | |
1530 | * could support variable refresh rates. Drivers should update the | |
1531 | * property value by calling drm_connector_set_vrr_capable_property(). | |
1532 | * | |
1533 | * Absence of the property should indicate absence of support. | |
1534 | * | |
77086014 | 1535 | * "VRR_ENABLED": |
ab7a664f NK |
1536 | * Default &drm_crtc boolean property that notifies the driver that the |
1537 | * content on the CRTC is suitable for variable refresh rate presentation. | |
1538 | * The driver will take this property as a hint to enable variable | |
1539 | * refresh rate support if the receiver supports it, ie. if the | |
1540 | * "vrr_capable" property is true on the &drm_connector object. The | |
1541 | * vertical front porch duration will be extended until page-flip or | |
1542 | * timeout when enabled. | |
1543 | * | |
1544 | * The minimum vertical front porch duration is defined as the vertical | |
1545 | * front porch duration for the current mode. | |
1546 | * | |
1547 | * The maximum vertical front porch duration is greater than or equal to | |
1548 | * the minimum vertical front porch duration. The duration is derived | |
1549 | * from the minimum supported variable refresh rate for the connector. | |
1550 | * | |
1551 | * The driver may place further restrictions within these minimum | |
1552 | * and maximum bounds. | |
ab7a664f NK |
1553 | */ |
1554 | ||
ba1b0f6c NK |
1555 | /** |
1556 | * drm_connector_attach_vrr_capable_property - creates the | |
1557 | * vrr_capable property | |
1558 | * @connector: connector to create the vrr_capable property on. | |
1559 | * | |
1560 | * This is used by atomic drivers to add support for querying | |
1561 | * variable refresh rate capability for a connector. | |
1562 | * | |
1563 | * Returns: | |
1564 | * Zero on success, negative errono on failure. | |
1565 | */ | |
1566 | int drm_connector_attach_vrr_capable_property( | |
1567 | struct drm_connector *connector) | |
1568 | { | |
1569 | struct drm_device *dev = connector->dev; | |
1570 | struct drm_property *prop; | |
1571 | ||
1572 | if (!connector->vrr_capable_property) { | |
1573 | prop = drm_property_create_bool(dev, DRM_MODE_PROP_IMMUTABLE, | |
1574 | "vrr_capable"); | |
1575 | if (!prop) | |
1576 | return -ENOMEM; | |
1577 | ||
1578 | connector->vrr_capable_property = prop; | |
1579 | drm_object_attach_property(&connector->base, prop, 0); | |
1580 | } | |
1581 | ||
1582 | return 0; | |
1583 | } | |
1584 | EXPORT_SYMBOL(drm_connector_attach_vrr_capable_property); | |
1585 | ||
8f6e1e22 ML |
1586 | /** |
1587 | * drm_connector_attach_scaling_mode_property - attach atomic scaling mode property | |
1588 | * @connector: connector to attach scaling mode property on. | |
1589 | * @scaling_mode_mask: or'ed mask of BIT(%DRM_MODE_SCALE_\*). | |
1590 | * | |
1591 | * This is used to add support for scaling mode to atomic drivers. | |
1592 | * The scaling mode will be set to &drm_connector_state.picture_aspect_ratio | |
1593 | * and can be used from &drm_connector_helper_funcs->atomic_check for validation. | |
1594 | * | |
1595 | * This is the atomic version of drm_mode_create_scaling_mode_property(). | |
1596 | * | |
1597 | * Returns: | |
1598 | * Zero on success, negative errno on failure. | |
1599 | */ | |
1600 | int drm_connector_attach_scaling_mode_property(struct drm_connector *connector, | |
1601 | u32 scaling_mode_mask) | |
1602 | { | |
1603 | struct drm_device *dev = connector->dev; | |
1604 | struct drm_property *scaling_mode_property; | |
30e9db6d | 1605 | int i; |
8f6e1e22 ML |
1606 | const unsigned valid_scaling_mode_mask = |
1607 | (1U << ARRAY_SIZE(drm_scaling_mode_enum_list)) - 1; | |
1608 | ||
1609 | if (WARN_ON(hweight32(scaling_mode_mask) < 2 || | |
1610 | scaling_mode_mask & ~valid_scaling_mode_mask)) | |
1611 | return -EINVAL; | |
1612 | ||
1613 | scaling_mode_property = | |
1614 | drm_property_create(dev, DRM_MODE_PROP_ENUM, "scaling mode", | |
1615 | hweight32(scaling_mode_mask)); | |
1616 | ||
1617 | if (!scaling_mode_property) | |
1618 | return -ENOMEM; | |
1619 | ||
1620 | for (i = 0; i < ARRAY_SIZE(drm_scaling_mode_enum_list); i++) { | |
1621 | int ret; | |
1622 | ||
1623 | if (!(BIT(i) & scaling_mode_mask)) | |
1624 | continue; | |
1625 | ||
30e9db6d | 1626 | ret = drm_property_add_enum(scaling_mode_property, |
8f6e1e22 ML |
1627 | drm_scaling_mode_enum_list[i].type, |
1628 | drm_scaling_mode_enum_list[i].name); | |
1629 | ||
1630 | if (ret) { | |
1631 | drm_property_destroy(dev, scaling_mode_property); | |
1632 | ||
1633 | return ret; | |
1634 | } | |
1635 | } | |
1636 | ||
1637 | drm_object_attach_property(&connector->base, | |
1638 | scaling_mode_property, 0); | |
1639 | ||
1640 | connector->scaling_mode_property = scaling_mode_property; | |
1641 | ||
1642 | return 0; | |
1643 | } | |
1644 | EXPORT_SYMBOL(drm_connector_attach_scaling_mode_property); | |
1645 | ||
52217195 DV |
1646 | /** |
1647 | * drm_mode_create_aspect_ratio_property - create aspect ratio property | |
1648 | * @dev: DRM device | |
1649 | * | |
1650 | * Called by a driver the first time it's needed, must be attached to desired | |
1651 | * connectors. | |
1652 | * | |
1653 | * Returns: | |
1654 | * Zero on success, negative errno on failure. | |
1655 | */ | |
1656 | int drm_mode_create_aspect_ratio_property(struct drm_device *dev) | |
1657 | { | |
1658 | if (dev->mode_config.aspect_ratio_property) | |
1659 | return 0; | |
1660 | ||
1661 | dev->mode_config.aspect_ratio_property = | |
1662 | drm_property_create_enum(dev, 0, "aspect ratio", | |
1663 | drm_aspect_ratio_enum_list, | |
1664 | ARRAY_SIZE(drm_aspect_ratio_enum_list)); | |
1665 | ||
1666 | if (dev->mode_config.aspect_ratio_property == NULL) | |
1667 | return -ENOMEM; | |
1668 | ||
1669 | return 0; | |
1670 | } | |
1671 | EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property); | |
1672 | ||
d2c6a405 US |
1673 | /** |
1674 | * DOC: standard connector properties | |
1675 | * | |
1676 | * Colorspace: | |
1677 | * drm_mode_create_colorspace_property - create colorspace property | |
1678 | * This property helps select a suitable colorspace based on the sink | |
1679 | * capability. Modern sink devices support wider gamut like BT2020. | |
1680 | * This helps switch to BT2020 mode if the BT2020 encoded video stream | |
1681 | * is being played by the user, same for any other colorspace. Thereby | |
1682 | * giving a good visual experience to users. | |
1683 | * | |
1684 | * The expectation from userspace is that it should parse the EDID | |
1685 | * and get supported colorspaces. Use this property and switch to the | |
1686 | * one supported. Sink supported colorspaces should be retrieved by | |
1687 | * userspace from EDID and driver will not explicitly expose them. | |
1688 | * | |
1689 | * Basically the expectation from userspace is: | |
1690 | * - Set up CRTC DEGAMMA/CTM/GAMMA to convert to some sink | |
1691 | * colorspace | |
1692 | * - Set this new property to let the sink know what it | |
1693 | * converted the CRTC output to. | |
1694 | * - This property is just to inform sink what colorspace | |
1695 | * source is trying to drive. | |
1696 | * | |
1697 | * Called by a driver the first time it's needed, must be attached to desired | |
1698 | * connectors. | |
1699 | */ | |
1700 | int drm_mode_create_colorspace_property(struct drm_connector *connector) | |
1701 | { | |
1702 | struct drm_device *dev = connector->dev; | |
1703 | struct drm_property *prop; | |
1704 | ||
1705 | if (connector->connector_type == DRM_MODE_CONNECTOR_HDMIA || | |
1706 | connector->connector_type == DRM_MODE_CONNECTOR_HDMIB) { | |
1707 | prop = drm_property_create_enum(dev, DRM_MODE_PROP_ENUM, | |
1708 | "Colorspace", | |
1709 | hdmi_colorspaces, | |
1710 | ARRAY_SIZE(hdmi_colorspaces)); | |
1711 | if (!prop) | |
1712 | return -ENOMEM; | |
1713 | } else { | |
1714 | DRM_DEBUG_KMS("Colorspace property not supported\n"); | |
1715 | return 0; | |
1716 | } | |
1717 | ||
1718 | connector->colorspace_property = prop; | |
1719 | ||
1720 | return 0; | |
1721 | } | |
1722 | EXPORT_SYMBOL(drm_mode_create_colorspace_property); | |
1723 | ||
50525c33 SL |
1724 | /** |
1725 | * drm_mode_create_content_type_property - create content type property | |
1726 | * @dev: DRM device | |
1727 | * | |
1728 | * Called by a driver the first time it's needed, must be attached to desired | |
1729 | * connectors. | |
1730 | * | |
1731 | * Returns: | |
1732 | * Zero on success, negative errno on failure. | |
1733 | */ | |
1734 | int drm_mode_create_content_type_property(struct drm_device *dev) | |
1735 | { | |
1736 | if (dev->mode_config.content_type_property) | |
1737 | return 0; | |
1738 | ||
1739 | dev->mode_config.content_type_property = | |
1740 | drm_property_create_enum(dev, 0, "content type", | |
1741 | drm_content_type_enum_list, | |
1742 | ARRAY_SIZE(drm_content_type_enum_list)); | |
1743 | ||
1744 | if (dev->mode_config.content_type_property == NULL) | |
1745 | return -ENOMEM; | |
1746 | ||
1747 | return 0; | |
1748 | } | |
1749 | EXPORT_SYMBOL(drm_mode_create_content_type_property); | |
1750 | ||
52217195 DV |
1751 | /** |
1752 | * drm_mode_create_suggested_offset_properties - create suggests offset properties | |
1753 | * @dev: DRM device | |
1754 | * | |
1755 | * Create the the suggested x/y offset property for connectors. | |
1756 | */ | |
1757 | int drm_mode_create_suggested_offset_properties(struct drm_device *dev) | |
1758 | { | |
1759 | if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property) | |
1760 | return 0; | |
1761 | ||
1762 | dev->mode_config.suggested_x_property = | |
1763 | drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff); | |
1764 | ||
1765 | dev->mode_config.suggested_y_property = | |
1766 | drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff); | |
1767 | ||
1768 | if (dev->mode_config.suggested_x_property == NULL || | |
1769 | dev->mode_config.suggested_y_property == NULL) | |
1770 | return -ENOMEM; | |
1771 | return 0; | |
1772 | } | |
1773 | EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties); | |
1774 | ||
1775 | /** | |
97e14fbe | 1776 | * drm_connector_set_path_property - set tile property on connector |
52217195 DV |
1777 | * @connector: connector to set property on. |
1778 | * @path: path to use for property; must not be NULL. | |
1779 | * | |
1780 | * This creates a property to expose to userspace to specify a | |
1781 | * connector path. This is mainly used for DisplayPort MST where | |
1782 | * connectors have a topology and we want to allow userspace to give | |
1783 | * them more meaningful names. | |
1784 | * | |
1785 | * Returns: | |
1786 | * Zero on success, negative errno on failure. | |
1787 | */ | |
97e14fbe DV |
1788 | int drm_connector_set_path_property(struct drm_connector *connector, |
1789 | const char *path) | |
52217195 DV |
1790 | { |
1791 | struct drm_device *dev = connector->dev; | |
1792 | int ret; | |
1793 | ||
1794 | ret = drm_property_replace_global_blob(dev, | |
1795 | &connector->path_blob_ptr, | |
1796 | strlen(path) + 1, | |
1797 | path, | |
1798 | &connector->base, | |
1799 | dev->mode_config.path_property); | |
1800 | return ret; | |
1801 | } | |
97e14fbe | 1802 | EXPORT_SYMBOL(drm_connector_set_path_property); |
52217195 DV |
1803 | |
1804 | /** | |
97e14fbe | 1805 | * drm_connector_set_tile_property - set tile property on connector |
52217195 DV |
1806 | * @connector: connector to set property on. |
1807 | * | |
1808 | * This looks up the tile information for a connector, and creates a | |
1809 | * property for userspace to parse if it exists. The property is of | |
1810 | * the form of 8 integers using ':' as a separator. | |
2de3a078 MN |
1811 | * This is used for dual port tiled displays with DisplayPort SST |
1812 | * or DisplayPort MST connectors. | |
52217195 DV |
1813 | * |
1814 | * Returns: | |
1815 | * Zero on success, errno on failure. | |
1816 | */ | |
97e14fbe | 1817 | int drm_connector_set_tile_property(struct drm_connector *connector) |
52217195 DV |
1818 | { |
1819 | struct drm_device *dev = connector->dev; | |
1820 | char tile[256]; | |
1821 | int ret; | |
1822 | ||
1823 | if (!connector->has_tile) { | |
1824 | ret = drm_property_replace_global_blob(dev, | |
1825 | &connector->tile_blob_ptr, | |
1826 | 0, | |
1827 | NULL, | |
1828 | &connector->base, | |
1829 | dev->mode_config.tile_property); | |
1830 | return ret; | |
1831 | } | |
1832 | ||
1833 | snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d", | |
1834 | connector->tile_group->id, connector->tile_is_single_monitor, | |
1835 | connector->num_h_tile, connector->num_v_tile, | |
1836 | connector->tile_h_loc, connector->tile_v_loc, | |
1837 | connector->tile_h_size, connector->tile_v_size); | |
1838 | ||
1839 | ret = drm_property_replace_global_blob(dev, | |
1840 | &connector->tile_blob_ptr, | |
1841 | strlen(tile) + 1, | |
1842 | tile, | |
1843 | &connector->base, | |
1844 | dev->mode_config.tile_property); | |
1845 | return ret; | |
1846 | } | |
97e14fbe | 1847 | EXPORT_SYMBOL(drm_connector_set_tile_property); |
52217195 DV |
1848 | |
1849 | /** | |
c555f023 | 1850 | * drm_connector_update_edid_property - update the edid property of a connector |
52217195 DV |
1851 | * @connector: drm connector |
1852 | * @edid: new value of the edid property | |
1853 | * | |
1854 | * This function creates a new blob modeset object and assigns its id to the | |
1855 | * connector's edid property. | |
2de3a078 MN |
1856 | * Since we also parse tile information from EDID's displayID block, we also |
1857 | * set the connector's tile property here. See drm_connector_set_tile_property() | |
1858 | * for more details. | |
52217195 DV |
1859 | * |
1860 | * Returns: | |
1861 | * Zero on success, negative errno on failure. | |
1862 | */ | |
c555f023 | 1863 | int drm_connector_update_edid_property(struct drm_connector *connector, |
97e14fbe | 1864 | const struct edid *edid) |
52217195 DV |
1865 | { |
1866 | struct drm_device *dev = connector->dev; | |
1867 | size_t size = 0; | |
1868 | int ret; | |
1869 | ||
1870 | /* ignore requests to set edid when overridden */ | |
1871 | if (connector->override_edid) | |
1872 | return 0; | |
1873 | ||
1874 | if (edid) | |
1875 | size = EDID_LENGTH * (1 + edid->extensions); | |
1876 | ||
170178fe KP |
1877 | /* Set the display info, using edid if available, otherwise |
1878 | * reseting the values to defaults. This duplicates the work | |
1879 | * done in drm_add_edid_modes, but that function is not | |
1880 | * consistently called before this one in all drivers and the | |
1881 | * computation is cheap enough that it seems better to | |
1882 | * duplicate it rather than attempt to ensure some arbitrary | |
1883 | * ordering of calls. | |
1884 | */ | |
1885 | if (edid) | |
1886 | drm_add_display_info(connector, edid); | |
1887 | else | |
1888 | drm_reset_display_info(connector); | |
1889 | ||
66660d4c DA |
1890 | drm_object_property_set_value(&connector->base, |
1891 | dev->mode_config.non_desktop_property, | |
1892 | connector->display_info.non_desktop); | |
1893 | ||
52217195 DV |
1894 | ret = drm_property_replace_global_blob(dev, |
1895 | &connector->edid_blob_ptr, | |
1896 | size, | |
1897 | edid, | |
1898 | &connector->base, | |
1899 | dev->mode_config.edid_property); | |
2de3a078 MN |
1900 | if (ret) |
1901 | return ret; | |
1902 | return drm_connector_set_tile_property(connector); | |
52217195 | 1903 | } |
c555f023 | 1904 | EXPORT_SYMBOL(drm_connector_update_edid_property); |
52217195 | 1905 | |
40ee6fbe | 1906 | /** |
97e14fbe | 1907 | * drm_connector_set_link_status_property - Set link status property of a connector |
40ee6fbe MN |
1908 | * @connector: drm connector |
1909 | * @link_status: new value of link status property (0: Good, 1: Bad) | |
1910 | * | |
1911 | * In usual working scenario, this link status property will always be set to | |
1912 | * "GOOD". If something fails during or after a mode set, the kernel driver | |
1913 | * may set this link status property to "BAD". The caller then needs to send a | |
1914 | * hotplug uevent for userspace to re-check the valid modes through | |
1915 | * GET_CONNECTOR_IOCTL and retry modeset. | |
1916 | * | |
1917 | * Note: Drivers cannot rely on userspace to support this property and | |
1918 | * issue a modeset. As such, they may choose to handle issues (like | |
1919 | * re-training a link) without userspace's intervention. | |
1920 | * | |
1921 | * The reason for adding this property is to handle link training failures, but | |
1922 | * it is not limited to DP or link training. For example, if we implement | |
1923 | * asynchronous setcrtc, this property can be used to report any failures in that. | |
1924 | */ | |
97e14fbe DV |
1925 | void drm_connector_set_link_status_property(struct drm_connector *connector, |
1926 | uint64_t link_status) | |
40ee6fbe MN |
1927 | { |
1928 | struct drm_device *dev = connector->dev; | |
1929 | ||
1930 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); | |
1931 | connector->state->link_status = link_status; | |
1932 | drm_modeset_unlock(&dev->mode_config.connection_mutex); | |
1933 | } | |
97e14fbe | 1934 | EXPORT_SYMBOL(drm_connector_set_link_status_property); |
40ee6fbe | 1935 | |
47e22ff1 RS |
1936 | /** |
1937 | * drm_connector_attach_max_bpc_property - attach "max bpc" property | |
1938 | * @connector: connector to attach max bpc property on. | |
1939 | * @min: The minimum bit depth supported by the connector. | |
1940 | * @max: The maximum bit depth supported by the connector. | |
1941 | * | |
1942 | * This is used to add support for limiting the bit depth on a connector. | |
1943 | * | |
1944 | * Returns: | |
1945 | * Zero on success, negative errno on failure. | |
1946 | */ | |
1947 | int drm_connector_attach_max_bpc_property(struct drm_connector *connector, | |
1948 | int min, int max) | |
1949 | { | |
1950 | struct drm_device *dev = connector->dev; | |
1951 | struct drm_property *prop; | |
1952 | ||
1953 | prop = connector->max_bpc_property; | |
1954 | if (!prop) { | |
1955 | prop = drm_property_create_range(dev, 0, "max bpc", min, max); | |
1956 | if (!prop) | |
1957 | return -ENOMEM; | |
1958 | ||
1959 | connector->max_bpc_property = prop; | |
1960 | } | |
1961 | ||
1962 | drm_object_attach_property(&connector->base, prop, max); | |
1963 | connector->state->max_requested_bpc = max; | |
1964 | connector->state->max_bpc = max; | |
1965 | ||
1966 | return 0; | |
1967 | } | |
1968 | EXPORT_SYMBOL(drm_connector_attach_max_bpc_property); | |
1969 | ||
ba1b0f6c NK |
1970 | /** |
1971 | * drm_connector_set_vrr_capable_property - sets the variable refresh rate | |
1972 | * capable property for a connector | |
1973 | * @connector: drm connector | |
1974 | * @capable: True if the connector is variable refresh rate capable | |
1975 | * | |
1976 | * Should be used by atomic drivers to update the indicated support for | |
1977 | * variable refresh rate over a connector. | |
1978 | */ | |
1979 | void drm_connector_set_vrr_capable_property( | |
1980 | struct drm_connector *connector, bool capable) | |
1981 | { | |
1982 | drm_object_property_set_value(&connector->base, | |
1983 | connector->vrr_capable_property, | |
1984 | capable); | |
1985 | } | |
1986 | EXPORT_SYMBOL(drm_connector_set_vrr_capable_property); | |
1987 | ||
8d70f395 HG |
1988 | /** |
1989 | * drm_connector_init_panel_orientation_property - | |
1990 | * initialize the connecters panel_orientation property | |
1991 | * @connector: connector for which to init the panel-orientation property. | |
1992 | * @width: width in pixels of the panel, used for panel quirk detection | |
1993 | * @height: height in pixels of the panel, used for panel quirk detection | |
1994 | * | |
1995 | * This function should only be called for built-in panels, after setting | |
1996 | * connector->display_info.panel_orientation first (if known). | |
1997 | * | |
1998 | * This function will check for platform specific (e.g. DMI based) quirks | |
1999 | * overriding display_info.panel_orientation first, then if panel_orientation | |
2000 | * is not DRM_MODE_PANEL_ORIENTATION_UNKNOWN it will attach the | |
2001 | * "panel orientation" property to the connector. | |
2002 | * | |
2003 | * Returns: | |
2004 | * Zero on success, negative errno on failure. | |
2005 | */ | |
2006 | int drm_connector_init_panel_orientation_property( | |
2007 | struct drm_connector *connector, int width, int height) | |
2008 | { | |
2009 | struct drm_device *dev = connector->dev; | |
2010 | struct drm_display_info *info = &connector->display_info; | |
2011 | struct drm_property *prop; | |
2012 | int orientation_quirk; | |
2013 | ||
2014 | orientation_quirk = drm_get_panel_orientation_quirk(width, height); | |
2015 | if (orientation_quirk != DRM_MODE_PANEL_ORIENTATION_UNKNOWN) | |
2016 | info->panel_orientation = orientation_quirk; | |
2017 | ||
2018 | if (info->panel_orientation == DRM_MODE_PANEL_ORIENTATION_UNKNOWN) | |
2019 | return 0; | |
2020 | ||
2021 | prop = dev->mode_config.panel_orientation_property; | |
2022 | if (!prop) { | |
2023 | prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, | |
2024 | "panel orientation", | |
2025 | drm_panel_orientation_enum_list, | |
2026 | ARRAY_SIZE(drm_panel_orientation_enum_list)); | |
2027 | if (!prop) | |
2028 | return -ENOMEM; | |
2029 | ||
2030 | dev->mode_config.panel_orientation_property = prop; | |
2031 | } | |
2032 | ||
2033 | drm_object_attach_property(&connector->base, prop, | |
2034 | info->panel_orientation); | |
2035 | return 0; | |
2036 | } | |
2037 | EXPORT_SYMBOL(drm_connector_init_panel_orientation_property); | |
2038 | ||
97e14fbe | 2039 | int drm_connector_set_obj_prop(struct drm_mode_object *obj, |
52217195 DV |
2040 | struct drm_property *property, |
2041 | uint64_t value) | |
2042 | { | |
2043 | int ret = -EINVAL; | |
2044 | struct drm_connector *connector = obj_to_connector(obj); | |
2045 | ||
2046 | /* Do DPMS ourselves */ | |
2047 | if (property == connector->dev->mode_config.dpms_property) { | |
2048 | ret = (*connector->funcs->dpms)(connector, (int)value); | |
2049 | } else if (connector->funcs->set_property) | |
2050 | ret = connector->funcs->set_property(connector, property, value); | |
2051 | ||
144a7999 | 2052 | if (!ret) |
52217195 DV |
2053 | drm_object_property_set_value(&connector->base, property, value); |
2054 | return ret; | |
2055 | } | |
2056 | ||
97e14fbe DV |
2057 | int drm_connector_property_set_ioctl(struct drm_device *dev, |
2058 | void *data, struct drm_file *file_priv) | |
52217195 DV |
2059 | { |
2060 | struct drm_mode_connector_set_property *conn_set_prop = data; | |
2061 | struct drm_mode_obj_set_property obj_set_prop = { | |
2062 | .value = conn_set_prop->value, | |
2063 | .prop_id = conn_set_prop->prop_id, | |
2064 | .obj_id = conn_set_prop->connector_id, | |
2065 | .obj_type = DRM_MODE_OBJECT_CONNECTOR | |
2066 | }; | |
2067 | ||
2068 | /* It does all the locking and checking we need */ | |
2069 | return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv); | |
2070 | } | |
2071 | ||
2072 | static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector) | |
2073 | { | |
2074 | /* For atomic drivers only state objects are synchronously updated and | |
2075 | * protected by modeset locks, so check those first. */ | |
2076 | if (connector->state) | |
2077 | return connector->state->best_encoder; | |
2078 | return connector->encoder; | |
2079 | } | |
2080 | ||
c3ff0cdb AN |
2081 | static bool |
2082 | drm_mode_expose_to_userspace(const struct drm_display_mode *mode, | |
2083 | const struct list_head *export_list, | |
2084 | const struct drm_file *file_priv) | |
52217195 DV |
2085 | { |
2086 | /* | |
2087 | * If user-space hasn't configured the driver to expose the stereo 3D | |
2088 | * modes, don't expose them. | |
2089 | */ | |
2090 | if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode)) | |
2091 | return false; | |
c3ff0cdb AN |
2092 | /* |
2093 | * If user-space hasn't configured the driver to expose the modes | |
2094 | * with aspect-ratio, don't expose them. However if such a mode | |
2095 | * is unique, let it be exposed, but reset the aspect-ratio flags | |
2096 | * while preparing the list of user-modes. | |
2097 | */ | |
2098 | if (!file_priv->aspect_ratio_allowed) { | |
2099 | struct drm_display_mode *mode_itr; | |
2100 | ||
2101 | list_for_each_entry(mode_itr, export_list, export_head) | |
2102 | if (drm_mode_match(mode_itr, mode, | |
2103 | DRM_MODE_MATCH_TIMINGS | | |
2104 | DRM_MODE_MATCH_CLOCK | | |
2105 | DRM_MODE_MATCH_FLAGS | | |
2106 | DRM_MODE_MATCH_3D_FLAGS)) | |
2107 | return false; | |
2108 | } | |
52217195 DV |
2109 | |
2110 | return true; | |
2111 | } | |
2112 | ||
2113 | int drm_mode_getconnector(struct drm_device *dev, void *data, | |
2114 | struct drm_file *file_priv) | |
2115 | { | |
2116 | struct drm_mode_get_connector *out_resp = data; | |
2117 | struct drm_connector *connector; | |
2118 | struct drm_encoder *encoder; | |
2119 | struct drm_display_mode *mode; | |
2120 | int mode_count = 0; | |
2121 | int encoders_count = 0; | |
2122 | int ret = 0; | |
2123 | int copied = 0; | |
2124 | int i; | |
2125 | struct drm_mode_modeinfo u_mode; | |
2126 | struct drm_mode_modeinfo __user *mode_ptr; | |
2127 | uint32_t __user *encoder_ptr; | |
c3ff0cdb | 2128 | LIST_HEAD(export_list); |
52217195 DV |
2129 | |
2130 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
69fdf420 | 2131 | return -EOPNOTSUPP; |
52217195 DV |
2132 | |
2133 | memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo)); | |
2134 | ||
418da172 | 2135 | connector = drm_connector_lookup(dev, file_priv, out_resp->connector_id); |
91eefc05 DV |
2136 | if (!connector) |
2137 | return -ENOENT; | |
2138 | ||
83aefbb8 VS |
2139 | drm_connector_for_each_possible_encoder(connector, encoder, i) |
2140 | encoders_count++; | |
52217195 | 2141 | |
91eefc05 DV |
2142 | if ((out_resp->count_encoders >= encoders_count) && encoders_count) { |
2143 | copied = 0; | |
2144 | encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr); | |
83aefbb8 VS |
2145 | |
2146 | drm_connector_for_each_possible_encoder(connector, encoder, i) { | |
2147 | if (put_user(encoder->base.id, encoder_ptr + copied)) { | |
2148 | ret = -EFAULT; | |
2149 | goto out; | |
91eefc05 | 2150 | } |
83aefbb8 | 2151 | copied++; |
91eefc05 DV |
2152 | } |
2153 | } | |
2154 | out_resp->count_encoders = encoders_count; | |
2155 | ||
2156 | out_resp->connector_id = connector->base.id; | |
2157 | out_resp->connector_type = connector->connector_type; | |
2158 | out_resp->connector_type_id = connector->connector_type_id; | |
2159 | ||
2160 | mutex_lock(&dev->mode_config.mutex); | |
52217195 DV |
2161 | if (out_resp->count_modes == 0) { |
2162 | connector->funcs->fill_modes(connector, | |
2163 | dev->mode_config.max_width, | |
2164 | dev->mode_config.max_height); | |
2165 | } | |
2166 | ||
52217195 DV |
2167 | out_resp->mm_width = connector->display_info.width_mm; |
2168 | out_resp->mm_height = connector->display_info.height_mm; | |
2169 | out_resp->subpixel = connector->display_info.subpixel_order; | |
2170 | out_resp->connection = connector->status; | |
2171 | ||
91eefc05 DV |
2172 | /* delayed so we get modes regardless of pre-fill_modes state */ |
2173 | list_for_each_entry(mode, &connector->modes, head) | |
c3ff0cdb AN |
2174 | if (drm_mode_expose_to_userspace(mode, &export_list, |
2175 | file_priv)) { | |
2176 | list_add_tail(&mode->export_head, &export_list); | |
91eefc05 | 2177 | mode_count++; |
c3ff0cdb | 2178 | } |
52217195 DV |
2179 | |
2180 | /* | |
2181 | * This ioctl is called twice, once to determine how much space is | |
2182 | * needed, and the 2nd time to fill it. | |
c3ff0cdb AN |
2183 | * The modes that need to be exposed to the user are maintained in the |
2184 | * 'export_list'. When the ioctl is called first time to determine the, | |
2185 | * space, the export_list gets filled, to find the no.of modes. In the | |
2186 | * 2nd time, the user modes are filled, one by one from the export_list. | |
52217195 DV |
2187 | */ |
2188 | if ((out_resp->count_modes >= mode_count) && mode_count) { | |
2189 | copied = 0; | |
2190 | mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr; | |
c3ff0cdb | 2191 | list_for_each_entry(mode, &export_list, export_head) { |
52217195 | 2192 | drm_mode_convert_to_umode(&u_mode, mode); |
c3ff0cdb AN |
2193 | /* |
2194 | * Reset aspect ratio flags of user-mode, if modes with | |
2195 | * aspect-ratio are not supported. | |
2196 | */ | |
2197 | if (!file_priv->aspect_ratio_allowed) | |
2198 | u_mode.flags &= ~DRM_MODE_FLAG_PIC_AR_MASK; | |
52217195 DV |
2199 | if (copy_to_user(mode_ptr + copied, |
2200 | &u_mode, sizeof(u_mode))) { | |
2201 | ret = -EFAULT; | |
e94ac351 DV |
2202 | mutex_unlock(&dev->mode_config.mutex); |
2203 | ||
52217195 DV |
2204 | goto out; |
2205 | } | |
2206 | copied++; | |
2207 | } | |
2208 | } | |
2209 | out_resp->count_modes = mode_count; | |
52217195 | 2210 | mutex_unlock(&dev->mode_config.mutex); |
e94ac351 DV |
2211 | |
2212 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); | |
2213 | encoder = drm_connector_get_encoder(connector); | |
2214 | if (encoder) | |
2215 | out_resp->encoder_id = encoder->base.id; | |
2216 | else | |
2217 | out_resp->encoder_id = 0; | |
2218 | ||
2219 | /* Only grab properties after probing, to make sure EDID and other | |
2220 | * properties reflect the latest status. */ | |
2221 | ret = drm_mode_object_get_properties(&connector->base, file_priv->atomic, | |
2222 | (uint32_t __user *)(unsigned long)(out_resp->props_ptr), | |
2223 | (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr), | |
2224 | &out_resp->count_props); | |
2225 | drm_modeset_unlock(&dev->mode_config.connection_mutex); | |
2226 | ||
2227 | out: | |
ad093607 | 2228 | drm_connector_put(connector); |
52217195 DV |
2229 | |
2230 | return ret; | |
2231 | } | |
2232 | ||
9498c19b DV |
2233 | |
2234 | /** | |
2235 | * DOC: Tile group | |
2236 | * | |
2237 | * Tile groups are used to represent tiled monitors with a unique integer | |
2238 | * identifier. Tiled monitors using DisplayID v1.3 have a unique 8-byte handle, | |
2239 | * we store this in a tile group, so we have a common identifier for all tiles | |
2240 | * in a monitor group. The property is called "TILE". Drivers can manage tile | |
2241 | * groups using drm_mode_create_tile_group(), drm_mode_put_tile_group() and | |
2242 | * drm_mode_get_tile_group(). But this is only needed for internal panels where | |
2243 | * the tile group information is exposed through a non-standard way. | |
2244 | */ | |
2245 | ||
2246 | static void drm_tile_group_free(struct kref *kref) | |
2247 | { | |
2248 | struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount); | |
2249 | struct drm_device *dev = tg->dev; | |
2250 | mutex_lock(&dev->mode_config.idr_mutex); | |
2251 | idr_remove(&dev->mode_config.tile_idr, tg->id); | |
2252 | mutex_unlock(&dev->mode_config.idr_mutex); | |
2253 | kfree(tg); | |
2254 | } | |
2255 | ||
2256 | /** | |
2257 | * drm_mode_put_tile_group - drop a reference to a tile group. | |
2258 | * @dev: DRM device | |
2259 | * @tg: tile group to drop reference to. | |
2260 | * | |
2261 | * drop reference to tile group and free if 0. | |
2262 | */ | |
2263 | void drm_mode_put_tile_group(struct drm_device *dev, | |
2264 | struct drm_tile_group *tg) | |
2265 | { | |
2266 | kref_put(&tg->refcount, drm_tile_group_free); | |
2267 | } | |
2268 | EXPORT_SYMBOL(drm_mode_put_tile_group); | |
2269 | ||
2270 | /** | |
2271 | * drm_mode_get_tile_group - get a reference to an existing tile group | |
2272 | * @dev: DRM device | |
2273 | * @topology: 8-bytes unique per monitor. | |
2274 | * | |
2275 | * Use the unique bytes to get a reference to an existing tile group. | |
2276 | * | |
2277 | * RETURNS: | |
2278 | * tile group or NULL if not found. | |
2279 | */ | |
2280 | struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev, | |
2281 | char topology[8]) | |
2282 | { | |
2283 | struct drm_tile_group *tg; | |
2284 | int id; | |
2285 | mutex_lock(&dev->mode_config.idr_mutex); | |
2286 | idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) { | |
2287 | if (!memcmp(tg->group_data, topology, 8)) { | |
2288 | if (!kref_get_unless_zero(&tg->refcount)) | |
2289 | tg = NULL; | |
2290 | mutex_unlock(&dev->mode_config.idr_mutex); | |
2291 | return tg; | |
2292 | } | |
2293 | } | |
2294 | mutex_unlock(&dev->mode_config.idr_mutex); | |
2295 | return NULL; | |
2296 | } | |
2297 | EXPORT_SYMBOL(drm_mode_get_tile_group); | |
2298 | ||
2299 | /** | |
2300 | * drm_mode_create_tile_group - create a tile group from a displayid description | |
2301 | * @dev: DRM device | |
2302 | * @topology: 8-bytes unique per monitor. | |
2303 | * | |
2304 | * Create a tile group for the unique monitor, and get a unique | |
2305 | * identifier for the tile group. | |
2306 | * | |
2307 | * RETURNS: | |
705c8160 | 2308 | * new tile group or NULL. |
9498c19b DV |
2309 | */ |
2310 | struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev, | |
2311 | char topology[8]) | |
2312 | { | |
2313 | struct drm_tile_group *tg; | |
2314 | int ret; | |
2315 | ||
2316 | tg = kzalloc(sizeof(*tg), GFP_KERNEL); | |
2317 | if (!tg) | |
705c8160 | 2318 | return NULL; |
9498c19b DV |
2319 | |
2320 | kref_init(&tg->refcount); | |
2321 | memcpy(tg->group_data, topology, 8); | |
2322 | tg->dev = dev; | |
2323 | ||
2324 | mutex_lock(&dev->mode_config.idr_mutex); | |
2325 | ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL); | |
2326 | if (ret >= 0) { | |
2327 | tg->id = ret; | |
2328 | } else { | |
2329 | kfree(tg); | |
705c8160 | 2330 | tg = NULL; |
9498c19b DV |
2331 | } |
2332 | ||
2333 | mutex_unlock(&dev->mode_config.idr_mutex); | |
2334 | return tg; | |
2335 | } | |
2336 | EXPORT_SYMBOL(drm_mode_create_tile_group); |