Commit | Line | Data |
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52217195 DV |
1 | /* |
2 | * Copyright (c) 2016 Intel Corporation | |
3 | * | |
4 | * Permission to use, copy, modify, distribute, and sell this software and its | |
5 | * documentation for any purpose is hereby granted without fee, provided that | |
6 | * the above copyright notice appear in all copies and that both that copyright | |
7 | * notice and this permission notice appear in supporting documentation, and | |
8 | * that the name of the copyright holders not be used in advertising or | |
9 | * publicity pertaining to distribution of the software without specific, | |
10 | * written prior permission. The copyright holders make no representations | |
11 | * about the suitability of this software for any purpose. It is provided "as | |
12 | * is" without express or implied warranty. | |
13 | * | |
14 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
15 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
16 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
17 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
18 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
19 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
20 | * OF THIS SOFTWARE. | |
21 | */ | |
22 | ||
8f86c82a | 23 | #include <drm/drm_auth.h> |
52217195 | 24 | #include <drm/drm_connector.h> |
d71d8a4b | 25 | #include <drm/drm_drv.h> |
52217195 | 26 | #include <drm/drm_edid.h> |
9338203c | 27 | #include <drm/drm_encoder.h> |
d71d8a4b | 28 | #include <drm/drm_file.h> |
35a3b82f | 29 | #include <drm/drm_managed.h> |
5e41b01a | 30 | #include <drm/drm_panel.h> |
99f45e32 | 31 | #include <drm/drm_print.h> |
334f74ee | 32 | #include <drm/drm_privacy_screen_consumer.h> |
968d81a6 | 33 | #include <drm/drm_sysfs.h> |
d71d8a4b | 34 | #include <drm/drm_utils.h> |
99f45e32 | 35 | |
495e440b | 36 | #include <linux/property.h> |
99f45e32 | 37 | #include <linux/uaccess.h> |
52217195 | 38 | |
495e440b TZ |
39 | #include <video/cmdline.h> |
40 | ||
52217195 DV |
41 | #include "drm_crtc_internal.h" |
42 | #include "drm_internal.h" | |
43 | ||
ae2a6da8 DV |
44 | /** |
45 | * DOC: overview | |
46 | * | |
47 | * In DRM connectors are the general abstraction for display sinks, and include | |
84e543bc | 48 | * also fixed panels or anything else that can display pixels in some form. As |
ae2a6da8 DV |
49 | * opposed to all other KMS objects representing hardware (like CRTC, encoder or |
50 | * plane abstractions) connectors can be hotplugged and unplugged at runtime. | |
ad093607 TR |
51 | * Hence they are reference-counted using drm_connector_get() and |
52 | * drm_connector_put(). | |
ae2a6da8 | 53 | * |
d574528a DV |
54 | * KMS driver must create, initialize, register and attach at a &struct |
55 | * drm_connector for each such sink. The instance is created as other KMS | |
aec97460 DV |
56 | * objects and initialized by setting the following fields. The connector is |
57 | * initialized with a call to drm_connector_init() with a pointer to the | |
58 | * &struct drm_connector_funcs and a connector type, and then exposed to | |
59 | * userspace with a call to drm_connector_register(). | |
ae2a6da8 DV |
60 | * |
61 | * Connectors must be attached to an encoder to be used. For devices that map | |
62 | * connectors to encoders 1:1, the connector should be attached at | |
cde4c44d | 63 | * initialization time with a call to drm_connector_attach_encoder(). The |
d574528a | 64 | * driver must also set the &drm_connector.encoder field to point to the |
ae2a6da8 DV |
65 | * attached encoder. |
66 | * | |
67 | * For connectors which are not fixed (like built-in panels) the driver needs to | |
68 | * support hotplug notifications. The simplest way to do that is by using the | |
69 | * probe helpers, see drm_kms_helper_poll_init() for connectors which don't have | |
70 | * hardware support for hotplug interrupts. Connectors with hardware hotplug | |
71 | * support can instead use e.g. drm_helper_hpd_irq_event(). | |
72 | */ | |
73 | ||
3d3f7c1e HG |
74 | /* |
75 | * Global connector list for drm_connector_find_by_fwnode(). | |
76 | * Note drm_connector_[un]register() first take connector->lock and then | |
77 | * take the connector_list_lock. | |
78 | */ | |
79 | static DEFINE_MUTEX(connector_list_lock); | |
80 | static LIST_HEAD(connector_list); | |
81 | ||
52217195 DV |
82 | struct drm_conn_prop_enum_list { |
83 | int type; | |
84 | const char *name; | |
85 | struct ida ida; | |
86 | }; | |
87 | ||
88 | /* | |
89 | * Connector and encoder types. | |
90 | */ | |
91 | static struct drm_conn_prop_enum_list drm_connector_enum_list[] = { | |
92 | { DRM_MODE_CONNECTOR_Unknown, "Unknown" }, | |
93 | { DRM_MODE_CONNECTOR_VGA, "VGA" }, | |
94 | { DRM_MODE_CONNECTOR_DVII, "DVI-I" }, | |
95 | { DRM_MODE_CONNECTOR_DVID, "DVI-D" }, | |
96 | { DRM_MODE_CONNECTOR_DVIA, "DVI-A" }, | |
97 | { DRM_MODE_CONNECTOR_Composite, "Composite" }, | |
98 | { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" }, | |
99 | { DRM_MODE_CONNECTOR_LVDS, "LVDS" }, | |
100 | { DRM_MODE_CONNECTOR_Component, "Component" }, | |
101 | { DRM_MODE_CONNECTOR_9PinDIN, "DIN" }, | |
102 | { DRM_MODE_CONNECTOR_DisplayPort, "DP" }, | |
103 | { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" }, | |
104 | { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" }, | |
105 | { DRM_MODE_CONNECTOR_TV, "TV" }, | |
106 | { DRM_MODE_CONNECTOR_eDP, "eDP" }, | |
107 | { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" }, | |
108 | { DRM_MODE_CONNECTOR_DSI, "DSI" }, | |
109 | { DRM_MODE_CONNECTOR_DPI, "DPI" }, | |
935774cd | 110 | { DRM_MODE_CONNECTOR_WRITEBACK, "Writeback" }, |
fc06bf1d | 111 | { DRM_MODE_CONNECTOR_SPI, "SPI" }, |
757e2671 | 112 | { DRM_MODE_CONNECTOR_USB, "USB" }, |
52217195 DV |
113 | }; |
114 | ||
115 | void drm_connector_ida_init(void) | |
116 | { | |
117 | int i; | |
118 | ||
119 | for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++) | |
120 | ida_init(&drm_connector_enum_list[i].ida); | |
121 | } | |
122 | ||
123 | void drm_connector_ida_destroy(void) | |
124 | { | |
125 | int i; | |
126 | ||
127 | for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++) | |
128 | ida_destroy(&drm_connector_enum_list[i].ida); | |
129 | } | |
130 | ||
b35f90f2 LP |
131 | /** |
132 | * drm_get_connector_type_name - return a string for connector type | |
133 | * @type: The connector type (DRM_MODE_CONNECTOR_*) | |
134 | * | |
135 | * Returns: the name of the connector type, or NULL if the type is not valid. | |
136 | */ | |
137 | const char *drm_get_connector_type_name(unsigned int type) | |
138 | { | |
139 | if (type < ARRAY_SIZE(drm_connector_enum_list)) | |
140 | return drm_connector_enum_list[type].name; | |
141 | ||
142 | return NULL; | |
143 | } | |
144 | EXPORT_SYMBOL(drm_get_connector_type_name); | |
145 | ||
52217195 DV |
146 | /** |
147 | * drm_connector_get_cmdline_mode - reads the user's cmdline mode | |
84e543bc | 148 | * @connector: connector to query |
52217195 | 149 | * |
ae2a6da8 | 150 | * The kernel supports per-connector configuration of its consoles through |
52217195 DV |
151 | * use of the video= parameter. This function parses that option and |
152 | * extracts the user's specified mode (or enable/disable status) for a | |
153 | * particular connector. This is typically only used during the early fbdev | |
154 | * setup. | |
155 | */ | |
156 | static void drm_connector_get_cmdline_mode(struct drm_connector *connector) | |
157 | { | |
158 | struct drm_cmdline_mode *mode = &connector->cmdline_mode; | |
495e440b | 159 | const char *option; |
52217195 | 160 | |
495e440b TZ |
161 | option = video_get_options(connector->name); |
162 | if (!option) | |
52217195 DV |
163 | return; |
164 | ||
165 | if (!drm_mode_parse_command_line_for_connector(option, | |
166 | connector, | |
167 | mode)) | |
168 | return; | |
169 | ||
170 | if (mode->force) { | |
6140cf20 JN |
171 | DRM_INFO("forcing %s connector %s\n", connector->name, |
172 | drm_get_connector_force_name(mode->force)); | |
52217195 DV |
173 | connector->force = mode->force; |
174 | } | |
175 | ||
0980939d HG |
176 | if (mode->panel_orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN) { |
177 | DRM_INFO("cmdline forces connector %s panel_orientation to %d\n", | |
178 | connector->name, mode->panel_orientation); | |
179 | drm_connector_set_panel_orientation(connector, | |
180 | mode->panel_orientation); | |
181 | } | |
182 | ||
3aeeb13d | 183 | DRM_DEBUG_KMS("cmdline mode for connector %s %s %dx%d@%dHz%s%s%s\n", |
50b0946d | 184 | connector->name, mode->name, |
52217195 DV |
185 | mode->xres, mode->yres, |
186 | mode->refresh_specified ? mode->refresh : 60, | |
187 | mode->rb ? " reduced blanking" : "", | |
188 | mode->margins ? " with margins" : "", | |
189 | mode->interlace ? " interlaced" : ""); | |
190 | } | |
191 | ||
192 | static void drm_connector_free(struct kref *kref) | |
193 | { | |
194 | struct drm_connector *connector = | |
195 | container_of(kref, struct drm_connector, base.refcount); | |
196 | struct drm_device *dev = connector->dev; | |
197 | ||
198 | drm_mode_object_unregister(dev, &connector->base); | |
199 | connector->funcs->destroy(connector); | |
200 | } | |
201 | ||
ea497bb9 | 202 | void drm_connector_free_work_fn(struct work_struct *work) |
a703c550 | 203 | { |
ea497bb9 DV |
204 | struct drm_connector *connector, *n; |
205 | struct drm_device *dev = | |
206 | container_of(work, struct drm_device, mode_config.connector_free_work); | |
207 | struct drm_mode_config *config = &dev->mode_config; | |
208 | unsigned long flags; | |
209 | struct llist_node *freed; | |
a703c550 | 210 | |
ea497bb9 DV |
211 | spin_lock_irqsave(&config->connector_list_lock, flags); |
212 | freed = llist_del_all(&config->connector_free_list); | |
213 | spin_unlock_irqrestore(&config->connector_list_lock, flags); | |
214 | ||
215 | llist_for_each_entry_safe(connector, n, freed, free_node) { | |
216 | drm_mode_object_unregister(dev, &connector->base); | |
217 | connector->funcs->destroy(connector); | |
218 | } | |
a703c550 DV |
219 | } |
220 | ||
b11af8a2 MR |
221 | static int __drm_connector_init(struct drm_device *dev, |
222 | struct drm_connector *connector, | |
223 | const struct drm_connector_funcs *funcs, | |
224 | int connector_type, | |
225 | struct i2c_adapter *ddc) | |
52217195 DV |
226 | { |
227 | struct drm_mode_config *config = &dev->mode_config; | |
228 | int ret; | |
229 | struct ida *connector_ida = | |
230 | &drm_connector_enum_list[connector_type].ida; | |
231 | ||
ba1f665f HM |
232 | WARN_ON(drm_drv_uses_atomic_modeset(dev) && |
233 | (!funcs->atomic_destroy_state || | |
234 | !funcs->atomic_duplicate_state)); | |
235 | ||
2135ea7a TR |
236 | ret = __drm_mode_object_add(dev, &connector->base, |
237 | DRM_MODE_OBJECT_CONNECTOR, | |
238 | false, drm_connector_free); | |
52217195 | 239 | if (ret) |
613051da | 240 | return ret; |
52217195 DV |
241 | |
242 | connector->base.properties = &connector->properties; | |
243 | connector->dev = dev; | |
244 | connector->funcs = funcs; | |
245 | ||
2a8d3eac | 246 | /* connector index is used with 32bit bitmasks */ |
e5d6eeea | 247 | ret = ida_alloc_max(&config->connector_ida, 31, GFP_KERNEL); |
2a8d3eac VS |
248 | if (ret < 0) { |
249 | DRM_DEBUG_KMS("Failed to allocate %s connector index: %d\n", | |
250 | drm_connector_enum_list[connector_type].name, | |
251 | ret); | |
52217195 | 252 | goto out_put; |
2a8d3eac | 253 | } |
52217195 DV |
254 | connector->index = ret; |
255 | ret = 0; | |
256 | ||
257 | connector->connector_type = connector_type; | |
258 | connector->connector_type_id = | |
e5d6eeea | 259 | ida_alloc_min(connector_ida, 1, GFP_KERNEL); |
52217195 DV |
260 | if (connector->connector_type_id < 0) { |
261 | ret = connector->connector_type_id; | |
262 | goto out_put_id; | |
263 | } | |
264 | connector->name = | |
265 | kasprintf(GFP_KERNEL, "%s-%d", | |
266 | drm_connector_enum_list[connector_type].name, | |
267 | connector->connector_type_id); | |
268 | if (!connector->name) { | |
269 | ret = -ENOMEM; | |
270 | goto out_put_type_id; | |
271 | } | |
272 | ||
b11af8a2 MR |
273 | /* provide ddc symlink in sysfs */ |
274 | connector->ddc = ddc; | |
275 | ||
3d3f7c1e | 276 | INIT_LIST_HEAD(&connector->global_connector_list_entry); |
52217195 DV |
277 | INIT_LIST_HEAD(&connector->probed_modes); |
278 | INIT_LIST_HEAD(&connector->modes); | |
e73ab00e | 279 | mutex_init(&connector->mutex); |
90b575f5 | 280 | mutex_init(&connector->edid_override_mutex); |
52217195 | 281 | connector->edid_blob_ptr = NULL; |
5186421c | 282 | connector->epoch_counter = 0; |
2de3a078 | 283 | connector->tile_blob_ptr = NULL; |
52217195 | 284 | connector->status = connector_status_unknown; |
8d70f395 HG |
285 | connector->display_info.panel_orientation = |
286 | DRM_MODE_PANEL_ORIENTATION_UNKNOWN; | |
52217195 DV |
287 | |
288 | drm_connector_get_cmdline_mode(connector); | |
289 | ||
290 | /* We should add connectors at the end to avoid upsetting the connector | |
c2ce66da BMC |
291 | * index too much. |
292 | */ | |
613051da | 293 | spin_lock_irq(&config->connector_list_lock); |
52217195 DV |
294 | list_add_tail(&connector->head, &config->connector_list); |
295 | config->num_connector++; | |
613051da | 296 | spin_unlock_irq(&config->connector_list_lock); |
52217195 | 297 | |
935774cd BS |
298 | if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL && |
299 | connector_type != DRM_MODE_CONNECTOR_WRITEBACK) | |
6b7e2d5c | 300 | drm_connector_attach_edid_property(connector); |
52217195 DV |
301 | |
302 | drm_object_attach_property(&connector->base, | |
303 | config->dpms_property, 0); | |
304 | ||
40ee6fbe MN |
305 | drm_object_attach_property(&connector->base, |
306 | config->link_status_property, | |
307 | 0); | |
308 | ||
66660d4c DA |
309 | drm_object_attach_property(&connector->base, |
310 | config->non_desktop_property, | |
311 | 0); | |
2de3a078 MN |
312 | drm_object_attach_property(&connector->base, |
313 | config->tile_property, | |
314 | 0); | |
66660d4c | 315 | |
52217195 DV |
316 | if (drm_core_check_feature(dev, DRIVER_ATOMIC)) { |
317 | drm_object_attach_property(&connector->base, config->prop_crtc_id, 0); | |
318 | } | |
319 | ||
320 | connector->debugfs_entry = NULL; | |
321 | out_put_type_id: | |
322 | if (ret) | |
e5d6eeea | 323 | ida_free(connector_ida, connector->connector_type_id); |
52217195 DV |
324 | out_put_id: |
325 | if (ret) | |
e5d6eeea | 326 | ida_free(&config->connector_ida, connector->index); |
52217195 DV |
327 | out_put: |
328 | if (ret) | |
329 | drm_mode_object_unregister(dev, &connector->base); | |
330 | ||
52217195 DV |
331 | return ret; |
332 | } | |
b11af8a2 MR |
333 | |
334 | /** | |
335 | * drm_connector_init - Init a preallocated connector | |
336 | * @dev: DRM device | |
337 | * @connector: the connector to init | |
338 | * @funcs: callbacks for this connector | |
339 | * @connector_type: user visible type of the connector | |
340 | * | |
341 | * Initialises a preallocated connector. Connectors should be | |
342 | * subclassed as part of driver connector objects. | |
343 | * | |
344 | * At driver unload time the driver's &drm_connector_funcs.destroy hook | |
345 | * should call drm_connector_cleanup() and free the connector structure. | |
346 | * The connector structure should not be allocated with devm_kzalloc(). | |
347 | * | |
35a3b82f MR |
348 | * Note: consider using drmm_connector_init() instead of |
349 | * drm_connector_init() to let the DRM managed resource infrastructure | |
350 | * take care of cleanup and deallocation. | |
351 | * | |
b11af8a2 MR |
352 | * Returns: |
353 | * Zero on success, error code on failure. | |
354 | */ | |
355 | int drm_connector_init(struct drm_device *dev, | |
356 | struct drm_connector *connector, | |
357 | const struct drm_connector_funcs *funcs, | |
358 | int connector_type) | |
359 | { | |
a961b197 MR |
360 | if (drm_WARN_ON(dev, !(funcs && funcs->destroy))) |
361 | return -EINVAL; | |
362 | ||
b11af8a2 MR |
363 | return __drm_connector_init(dev, connector, funcs, connector_type, NULL); |
364 | } | |
52217195 DV |
365 | EXPORT_SYMBOL(drm_connector_init); |
366 | ||
100163df AP |
367 | /** |
368 | * drm_connector_init_with_ddc - Init a preallocated connector | |
369 | * @dev: DRM device | |
370 | * @connector: the connector to init | |
371 | * @funcs: callbacks for this connector | |
372 | * @connector_type: user visible type of the connector | |
373 | * @ddc: pointer to the associated ddc adapter | |
374 | * | |
375 | * Initialises a preallocated connector. Connectors should be | |
376 | * subclassed as part of driver connector objects. | |
377 | * | |
00ec947c MR |
378 | * At driver unload time the driver's &drm_connector_funcs.destroy hook |
379 | * should call drm_connector_cleanup() and free the connector structure. | |
380 | * The connector structure should not be allocated with devm_kzalloc(). | |
381 | * | |
100163df AP |
382 | * Ensures that the ddc field of the connector is correctly set. |
383 | * | |
35a3b82f MR |
384 | * Note: consider using drmm_connector_init() instead of |
385 | * drm_connector_init_with_ddc() to let the DRM managed resource | |
386 | * infrastructure take care of cleanup and deallocation. | |
387 | * | |
100163df AP |
388 | * Returns: |
389 | * Zero on success, error code on failure. | |
390 | */ | |
391 | int drm_connector_init_with_ddc(struct drm_device *dev, | |
392 | struct drm_connector *connector, | |
393 | const struct drm_connector_funcs *funcs, | |
394 | int connector_type, | |
395 | struct i2c_adapter *ddc) | |
396 | { | |
a961b197 MR |
397 | if (drm_WARN_ON(dev, !(funcs && funcs->destroy))) |
398 | return -EINVAL; | |
399 | ||
b11af8a2 | 400 | return __drm_connector_init(dev, connector, funcs, connector_type, ddc); |
100163df AP |
401 | } |
402 | EXPORT_SYMBOL(drm_connector_init_with_ddc); | |
403 | ||
35a3b82f MR |
404 | static void drm_connector_cleanup_action(struct drm_device *dev, |
405 | void *ptr) | |
406 | { | |
407 | struct drm_connector *connector = ptr; | |
408 | ||
409 | drm_connector_cleanup(connector); | |
410 | } | |
411 | ||
412 | /** | |
413 | * drmm_connector_init - Init a preallocated connector | |
414 | * @dev: DRM device | |
415 | * @connector: the connector to init | |
416 | * @funcs: callbacks for this connector | |
417 | * @connector_type: user visible type of the connector | |
418 | * @ddc: optional pointer to the associated ddc adapter | |
419 | * | |
420 | * Initialises a preallocated connector. Connectors should be | |
421 | * subclassed as part of driver connector objects. | |
422 | * | |
423 | * Cleanup is automatically handled with a call to | |
424 | * drm_connector_cleanup() in a DRM-managed action. | |
425 | * | |
426 | * The connector structure should be allocated with drmm_kzalloc(). | |
427 | * | |
428 | * Returns: | |
429 | * Zero on success, error code on failure. | |
430 | */ | |
431 | int drmm_connector_init(struct drm_device *dev, | |
432 | struct drm_connector *connector, | |
433 | const struct drm_connector_funcs *funcs, | |
434 | int connector_type, | |
435 | struct i2c_adapter *ddc) | |
436 | { | |
437 | int ret; | |
438 | ||
439 | if (drm_WARN_ON(dev, funcs && funcs->destroy)) | |
440 | return -EINVAL; | |
441 | ||
a91e5e3e | 442 | ret = __drm_connector_init(dev, connector, funcs, connector_type, ddc); |
35a3b82f MR |
443 | if (ret) |
444 | return ret; | |
445 | ||
446 | ret = drmm_add_action_or_reset(dev, drm_connector_cleanup_action, | |
447 | connector); | |
448 | if (ret) | |
449 | return ret; | |
450 | ||
451 | return 0; | |
452 | } | |
453 | EXPORT_SYMBOL(drmm_connector_init); | |
454 | ||
6b7e2d5c GH |
455 | /** |
456 | * drm_connector_attach_edid_property - attach edid property. | |
6b7e2d5c GH |
457 | * @connector: the connector |
458 | * | |
459 | * Some connector types like DRM_MODE_CONNECTOR_VIRTUAL do not get a | |
460 | * edid property attached by default. This function can be used to | |
461 | * explicitly enable the edid property in these cases. | |
462 | */ | |
463 | void drm_connector_attach_edid_property(struct drm_connector *connector) | |
464 | { | |
465 | struct drm_mode_config *config = &connector->dev->mode_config; | |
466 | ||
467 | drm_object_attach_property(&connector->base, | |
468 | config->edid_property, | |
469 | 0); | |
470 | } | |
471 | EXPORT_SYMBOL(drm_connector_attach_edid_property); | |
472 | ||
52217195 | 473 | /** |
cde4c44d | 474 | * drm_connector_attach_encoder - attach a connector to an encoder |
52217195 DV |
475 | * @connector: connector to attach |
476 | * @encoder: encoder to attach @connector to | |
477 | * | |
478 | * This function links up a connector to an encoder. Note that the routing | |
479 | * restrictions between encoders and crtcs are exposed to userspace through the | |
480 | * possible_clones and possible_crtcs bitmasks. | |
481 | * | |
482 | * Returns: | |
483 | * Zero on success, negative errno on failure. | |
484 | */ | |
cde4c44d DV |
485 | int drm_connector_attach_encoder(struct drm_connector *connector, |
486 | struct drm_encoder *encoder) | |
52217195 | 487 | { |
52217195 DV |
488 | /* |
489 | * In the past, drivers have attempted to model the static association | |
490 | * of connector to encoder in simple connector/encoder devices using a | |
491 | * direct assignment of connector->encoder = encoder. This connection | |
492 | * is a logical one and the responsibility of the core, so drivers are | |
493 | * expected not to mess with this. | |
494 | * | |
495 | * Note that the error return should've been enough here, but a large | |
496 | * majority of drivers ignores the return value, so add in a big WARN | |
497 | * to get people's attention. | |
498 | */ | |
499 | if (WARN_ON(connector->encoder)) | |
500 | return -EINVAL; | |
501 | ||
62afb4ad JRS |
502 | connector->possible_encoders |= drm_encoder_mask(encoder); |
503 | ||
504 | return 0; | |
52217195 | 505 | } |
cde4c44d | 506 | EXPORT_SYMBOL(drm_connector_attach_encoder); |
52217195 | 507 | |
38cb8d96 | 508 | /** |
62afb4ad JRS |
509 | * drm_connector_has_possible_encoder - check if the connector and encoder are |
510 | * associated with each other | |
38cb8d96 VS |
511 | * @connector: the connector |
512 | * @encoder: the encoder | |
513 | * | |
514 | * Returns: | |
515 | * True if @encoder is one of the possible encoders for @connector. | |
516 | */ | |
517 | bool drm_connector_has_possible_encoder(struct drm_connector *connector, | |
518 | struct drm_encoder *encoder) | |
519 | { | |
62afb4ad | 520 | return connector->possible_encoders & drm_encoder_mask(encoder); |
38cb8d96 VS |
521 | } |
522 | EXPORT_SYMBOL(drm_connector_has_possible_encoder); | |
523 | ||
52217195 DV |
524 | static void drm_mode_remove(struct drm_connector *connector, |
525 | struct drm_display_mode *mode) | |
526 | { | |
527 | list_del(&mode->head); | |
528 | drm_mode_destroy(connector->dev, mode); | |
529 | } | |
530 | ||
531 | /** | |
532 | * drm_connector_cleanup - cleans up an initialised connector | |
533 | * @connector: connector to cleanup | |
534 | * | |
535 | * Cleans up the connector but doesn't free the object. | |
536 | */ | |
537 | void drm_connector_cleanup(struct drm_connector *connector) | |
538 | { | |
539 | struct drm_device *dev = connector->dev; | |
540 | struct drm_display_mode *mode, *t; | |
541 | ||
542 | /* The connector should have been removed from userspace long before | |
543 | * it is finally destroyed. | |
544 | */ | |
39b50c60 LP |
545 | if (WARN_ON(connector->registration_state == |
546 | DRM_CONNECTOR_REGISTERED)) | |
52217195 DV |
547 | drm_connector_unregister(connector); |
548 | ||
334f74ee HG |
549 | if (connector->privacy_screen) { |
550 | drm_privacy_screen_put(connector->privacy_screen); | |
551 | connector->privacy_screen = NULL; | |
552 | } | |
553 | ||
52217195 DV |
554 | if (connector->tile_group) { |
555 | drm_mode_put_tile_group(dev, connector->tile_group); | |
556 | connector->tile_group = NULL; | |
557 | } | |
558 | ||
559 | list_for_each_entry_safe(mode, t, &connector->probed_modes, head) | |
560 | drm_mode_remove(connector, mode); | |
561 | ||
562 | list_for_each_entry_safe(mode, t, &connector->modes, head) | |
563 | drm_mode_remove(connector, mode); | |
564 | ||
e5d6eeea | 565 | ida_free(&drm_connector_enum_list[connector->connector_type].ida, |
9a47dba1 | 566 | connector->connector_type_id); |
52217195 | 567 | |
e5d6eeea | 568 | ida_free(&dev->mode_config.connector_ida, connector->index); |
52217195 DV |
569 | |
570 | kfree(connector->display_info.bus_formats); | |
c3292ab5 | 571 | kfree(connector->display_info.vics); |
52217195 DV |
572 | drm_mode_object_unregister(dev, &connector->base); |
573 | kfree(connector->name); | |
574 | connector->name = NULL; | |
48c429c6 HG |
575 | fwnode_handle_put(connector->fwnode); |
576 | connector->fwnode = NULL; | |
613051da | 577 | spin_lock_irq(&dev->mode_config.connector_list_lock); |
52217195 DV |
578 | list_del(&connector->head); |
579 | dev->mode_config.num_connector--; | |
613051da | 580 | spin_unlock_irq(&dev->mode_config.connector_list_lock); |
52217195 DV |
581 | |
582 | WARN_ON(connector->state && !connector->funcs->atomic_destroy_state); | |
583 | if (connector->state && connector->funcs->atomic_destroy_state) | |
584 | connector->funcs->atomic_destroy_state(connector, | |
585 | connector->state); | |
586 | ||
e73ab00e DV |
587 | mutex_destroy(&connector->mutex); |
588 | ||
52217195 | 589 | memset(connector, 0, sizeof(*connector)); |
6fdc2d49 SS |
590 | |
591 | if (dev->registered) | |
592 | drm_sysfs_hotplug_event(dev); | |
52217195 DV |
593 | } |
594 | EXPORT_SYMBOL(drm_connector_cleanup); | |
595 | ||
596 | /** | |
597 | * drm_connector_register - register a connector | |
598 | * @connector: the connector to register | |
599 | * | |
69b22f51 DV |
600 | * Register userspace interfaces for a connector. Only call this for connectors |
601 | * which can be hotplugged after drm_dev_register() has been called already, | |
602 | * e.g. DP MST connectors. All other connectors will be registered automatically | |
603 | * when calling drm_dev_register(). | |
52217195 | 604 | * |
d87fbea5 MR |
605 | * When the connector is no longer available, callers must call |
606 | * drm_connector_unregister(). | |
607 | * | |
52217195 DV |
608 | * Returns: |
609 | * Zero on success, error code on failure. | |
610 | */ | |
611 | int drm_connector_register(struct drm_connector *connector) | |
612 | { | |
e73ab00e | 613 | int ret = 0; |
52217195 | 614 | |
e6e7b48b DV |
615 | if (!connector->dev->registered) |
616 | return 0; | |
617 | ||
e73ab00e | 618 | mutex_lock(&connector->mutex); |
39b50c60 | 619 | if (connector->registration_state != DRM_CONNECTOR_INITIALIZING) |
e73ab00e | 620 | goto unlock; |
52217195 DV |
621 | |
622 | ret = drm_sysfs_connector_add(connector); | |
623 | if (ret) | |
e73ab00e | 624 | goto unlock; |
52217195 | 625 | |
b792e640 | 626 | drm_debugfs_connector_add(connector); |
52217195 DV |
627 | |
628 | if (connector->funcs->late_register) { | |
629 | ret = connector->funcs->late_register(connector); | |
630 | if (ret) | |
631 | goto err_debugfs; | |
632 | } | |
633 | ||
634 | drm_mode_object_register(connector->dev, &connector->base); | |
635 | ||
39b50c60 | 636 | connector->registration_state = DRM_CONNECTOR_REGISTERED; |
968d81a6 JS |
637 | |
638 | /* Let userspace know we have a new connector */ | |
ad935754 | 639 | drm_sysfs_connector_hotplug_event(connector); |
968d81a6 | 640 | |
334f74ee HG |
641 | if (connector->privacy_screen) |
642 | drm_privacy_screen_register_notifier(connector->privacy_screen, | |
643 | &connector->privacy_screen_notifier); | |
644 | ||
3d3f7c1e HG |
645 | mutex_lock(&connector_list_lock); |
646 | list_add_tail(&connector->global_connector_list_entry, &connector_list); | |
647 | mutex_unlock(&connector_list_lock); | |
e73ab00e | 648 | goto unlock; |
52217195 DV |
649 | |
650 | err_debugfs: | |
651 | drm_debugfs_connector_remove(connector); | |
52217195 | 652 | drm_sysfs_connector_remove(connector); |
e73ab00e DV |
653 | unlock: |
654 | mutex_unlock(&connector->mutex); | |
52217195 DV |
655 | return ret; |
656 | } | |
657 | EXPORT_SYMBOL(drm_connector_register); | |
658 | ||
659 | /** | |
660 | * drm_connector_unregister - unregister a connector | |
661 | * @connector: the connector to unregister | |
662 | * | |
69b22f51 | 663 | * Unregister userspace interfaces for a connector. Only call this for |
d87fbea5 MR |
664 | * connectors which have been registered explicitly by calling |
665 | * drm_connector_register(). | |
52217195 DV |
666 | */ |
667 | void drm_connector_unregister(struct drm_connector *connector) | |
668 | { | |
e73ab00e | 669 | mutex_lock(&connector->mutex); |
39b50c60 | 670 | if (connector->registration_state != DRM_CONNECTOR_REGISTERED) { |
e73ab00e | 671 | mutex_unlock(&connector->mutex); |
52217195 | 672 | return; |
e73ab00e | 673 | } |
52217195 | 674 | |
3d3f7c1e HG |
675 | mutex_lock(&connector_list_lock); |
676 | list_del_init(&connector->global_connector_list_entry); | |
677 | mutex_unlock(&connector_list_lock); | |
678 | ||
334f74ee HG |
679 | if (connector->privacy_screen) |
680 | drm_privacy_screen_unregister_notifier( | |
681 | connector->privacy_screen, | |
682 | &connector->privacy_screen_notifier); | |
683 | ||
52217195 DV |
684 | if (connector->funcs->early_unregister) |
685 | connector->funcs->early_unregister(connector); | |
686 | ||
687 | drm_sysfs_connector_remove(connector); | |
688 | drm_debugfs_connector_remove(connector); | |
689 | ||
39b50c60 | 690 | connector->registration_state = DRM_CONNECTOR_UNREGISTERED; |
e73ab00e | 691 | mutex_unlock(&connector->mutex); |
52217195 DV |
692 | } |
693 | EXPORT_SYMBOL(drm_connector_unregister); | |
694 | ||
695 | void drm_connector_unregister_all(struct drm_device *dev) | |
696 | { | |
697 | struct drm_connector *connector; | |
613051da | 698 | struct drm_connector_list_iter conn_iter; |
52217195 | 699 | |
b982dab1 | 700 | drm_connector_list_iter_begin(dev, &conn_iter); |
613051da | 701 | drm_for_each_connector_iter(connector, &conn_iter) |
52217195 | 702 | drm_connector_unregister(connector); |
b982dab1 | 703 | drm_connector_list_iter_end(&conn_iter); |
52217195 DV |
704 | } |
705 | ||
706 | int drm_connector_register_all(struct drm_device *dev) | |
707 | { | |
708 | struct drm_connector *connector; | |
613051da DV |
709 | struct drm_connector_list_iter conn_iter; |
710 | int ret = 0; | |
52217195 | 711 | |
b982dab1 | 712 | drm_connector_list_iter_begin(dev, &conn_iter); |
613051da | 713 | drm_for_each_connector_iter(connector, &conn_iter) { |
52217195 DV |
714 | ret = drm_connector_register(connector); |
715 | if (ret) | |
613051da | 716 | break; |
52217195 | 717 | } |
b982dab1 | 718 | drm_connector_list_iter_end(&conn_iter); |
52217195 | 719 | |
613051da DV |
720 | if (ret) |
721 | drm_connector_unregister_all(dev); | |
52217195 DV |
722 | return ret; |
723 | } | |
724 | ||
725 | /** | |
726 | * drm_get_connector_status_name - return a string for connector status | |
727 | * @status: connector status to compute name of | |
728 | * | |
729 | * In contrast to the other drm_get_*_name functions this one here returns a | |
730 | * const pointer and hence is threadsafe. | |
f85d9e59 RD |
731 | * |
732 | * Returns: connector status string | |
52217195 DV |
733 | */ |
734 | const char *drm_get_connector_status_name(enum drm_connector_status status) | |
735 | { | |
736 | if (status == connector_status_connected) | |
737 | return "connected"; | |
738 | else if (status == connector_status_disconnected) | |
739 | return "disconnected"; | |
740 | else | |
741 | return "unknown"; | |
742 | } | |
743 | EXPORT_SYMBOL(drm_get_connector_status_name); | |
744 | ||
6140cf20 JN |
745 | /** |
746 | * drm_get_connector_force_name - return a string for connector force | |
747 | * @force: connector force to get name of | |
748 | * | |
749 | * Returns: const pointer to name. | |
750 | */ | |
751 | const char *drm_get_connector_force_name(enum drm_connector_force force) | |
752 | { | |
753 | switch (force) { | |
754 | case DRM_FORCE_UNSPECIFIED: | |
755 | return "unspecified"; | |
756 | case DRM_FORCE_OFF: | |
757 | return "off"; | |
758 | case DRM_FORCE_ON: | |
759 | return "on"; | |
760 | case DRM_FORCE_ON_DIGITAL: | |
761 | return "digital"; | |
762 | default: | |
763 | return "unknown"; | |
764 | } | |
765 | } | |
766 | ||
613051da DV |
767 | #ifdef CONFIG_LOCKDEP |
768 | static struct lockdep_map connector_list_iter_dep_map = { | |
769 | .name = "drm_connector_list_iter" | |
770 | }; | |
771 | #endif | |
772 | ||
773 | /** | |
b982dab1 | 774 | * drm_connector_list_iter_begin - initialize a connector_list iterator |
613051da DV |
775 | * @dev: DRM device |
776 | * @iter: connector_list iterator | |
777 | * | |
d574528a | 778 | * Sets @iter up to walk the &drm_mode_config.connector_list of @dev. @iter |
b982dab1 | 779 | * must always be cleaned up again by calling drm_connector_list_iter_end(). |
613051da DV |
780 | * Iteration itself happens using drm_connector_list_iter_next() or |
781 | * drm_for_each_connector_iter(). | |
782 | */ | |
b982dab1 TR |
783 | void drm_connector_list_iter_begin(struct drm_device *dev, |
784 | struct drm_connector_list_iter *iter) | |
613051da DV |
785 | { |
786 | iter->dev = dev; | |
787 | iter->conn = NULL; | |
788 | lock_acquire_shared_recursive(&connector_list_iter_dep_map, 0, 1, NULL, _RET_IP_); | |
789 | } | |
b982dab1 | 790 | EXPORT_SYMBOL(drm_connector_list_iter_begin); |
613051da | 791 | |
a703c550 DV |
792 | /* |
793 | * Extra-safe connector put function that works in any context. Should only be | |
794 | * used from the connector_iter functions, where we never really expect to | |
795 | * actually release the connector when dropping our final reference. | |
796 | */ | |
797 | static void | |
ea497bb9 | 798 | __drm_connector_put_safe(struct drm_connector *conn) |
a703c550 | 799 | { |
ea497bb9 DV |
800 | struct drm_mode_config *config = &conn->dev->mode_config; |
801 | ||
802 | lockdep_assert_held(&config->connector_list_lock); | |
803 | ||
804 | if (!refcount_dec_and_test(&conn->base.refcount.refcount)) | |
805 | return; | |
806 | ||
807 | llist_add(&conn->free_node, &config->connector_free_list); | |
808 | schedule_work(&config->connector_free_work); | |
a703c550 DV |
809 | } |
810 | ||
613051da DV |
811 | /** |
812 | * drm_connector_list_iter_next - return next connector | |
4f45c778 | 813 | * @iter: connector_list iterator |
613051da | 814 | * |
f85d9e59 | 815 | * Returns: the next connector for @iter, or NULL when the list walk has |
613051da DV |
816 | * completed. |
817 | */ | |
818 | struct drm_connector * | |
819 | drm_connector_list_iter_next(struct drm_connector_list_iter *iter) | |
820 | { | |
821 | struct drm_connector *old_conn = iter->conn; | |
822 | struct drm_mode_config *config = &iter->dev->mode_config; | |
823 | struct list_head *lhead; | |
824 | unsigned long flags; | |
825 | ||
826 | spin_lock_irqsave(&config->connector_list_lock, flags); | |
827 | lhead = old_conn ? &old_conn->head : &config->connector_list; | |
828 | ||
829 | do { | |
830 | if (lhead->next == &config->connector_list) { | |
831 | iter->conn = NULL; | |
832 | break; | |
833 | } | |
834 | ||
835 | lhead = lhead->next; | |
836 | iter->conn = list_entry(lhead, struct drm_connector, head); | |
837 | ||
838 | /* loop until it's not a zombie connector */ | |
839 | } while (!kref_get_unless_zero(&iter->conn->base.refcount)); | |
613051da DV |
840 | |
841 | if (old_conn) | |
ea497bb9 DV |
842 | __drm_connector_put_safe(old_conn); |
843 | spin_unlock_irqrestore(&config->connector_list_lock, flags); | |
613051da DV |
844 | |
845 | return iter->conn; | |
846 | } | |
847 | EXPORT_SYMBOL(drm_connector_list_iter_next); | |
848 | ||
849 | /** | |
b982dab1 | 850 | * drm_connector_list_iter_end - tear down a connector_list iterator |
613051da DV |
851 | * @iter: connector_list iterator |
852 | * | |
853 | * Tears down @iter and releases any resources (like &drm_connector references) | |
854 | * acquired while walking the list. This must always be called, both when the | |
855 | * iteration completes fully or when it was aborted without walking the entire | |
856 | * list. | |
857 | */ | |
b982dab1 | 858 | void drm_connector_list_iter_end(struct drm_connector_list_iter *iter) |
613051da | 859 | { |
ea497bb9 DV |
860 | struct drm_mode_config *config = &iter->dev->mode_config; |
861 | unsigned long flags; | |
862 | ||
613051da | 863 | iter->dev = NULL; |
ea497bb9 DV |
864 | if (iter->conn) { |
865 | spin_lock_irqsave(&config->connector_list_lock, flags); | |
866 | __drm_connector_put_safe(iter->conn); | |
867 | spin_unlock_irqrestore(&config->connector_list_lock, flags); | |
868 | } | |
5facae4f | 869 | lock_release(&connector_list_iter_dep_map, _RET_IP_); |
613051da | 870 | } |
b982dab1 | 871 | EXPORT_SYMBOL(drm_connector_list_iter_end); |
613051da | 872 | |
52217195 DV |
873 | static const struct drm_prop_enum_list drm_subpixel_enum_list[] = { |
874 | { SubPixelUnknown, "Unknown" }, | |
875 | { SubPixelHorizontalRGB, "Horizontal RGB" }, | |
876 | { SubPixelHorizontalBGR, "Horizontal BGR" }, | |
877 | { SubPixelVerticalRGB, "Vertical RGB" }, | |
878 | { SubPixelVerticalBGR, "Vertical BGR" }, | |
879 | { SubPixelNone, "None" }, | |
880 | }; | |
881 | ||
882 | /** | |
883 | * drm_get_subpixel_order_name - return a string for a given subpixel enum | |
884 | * @order: enum of subpixel_order | |
885 | * | |
886 | * Note you could abuse this and return something out of bounds, but that | |
887 | * would be a caller error. No unscrubbed user data should make it here. | |
f85d9e59 RD |
888 | * |
889 | * Returns: string describing an enumerated subpixel property | |
52217195 DV |
890 | */ |
891 | const char *drm_get_subpixel_order_name(enum subpixel_order order) | |
892 | { | |
893 | return drm_subpixel_enum_list[order].name; | |
894 | } | |
895 | EXPORT_SYMBOL(drm_get_subpixel_order_name); | |
896 | ||
897 | static const struct drm_prop_enum_list drm_dpms_enum_list[] = { | |
898 | { DRM_MODE_DPMS_ON, "On" }, | |
899 | { DRM_MODE_DPMS_STANDBY, "Standby" }, | |
900 | { DRM_MODE_DPMS_SUSPEND, "Suspend" }, | |
901 | { DRM_MODE_DPMS_OFF, "Off" } | |
902 | }; | |
903 | DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list) | |
904 | ||
40ee6fbe MN |
905 | static const struct drm_prop_enum_list drm_link_status_enum_list[] = { |
906 | { DRM_MODE_LINK_STATUS_GOOD, "Good" }, | |
907 | { DRM_MODE_LINK_STATUS_BAD, "Bad" }, | |
908 | }; | |
40ee6fbe | 909 | |
b3c6c8bf DV |
910 | /** |
911 | * drm_display_info_set_bus_formats - set the supported bus formats | |
912 | * @info: display info to store bus formats in | |
913 | * @formats: array containing the supported bus formats | |
914 | * @num_formats: the number of entries in the fmts array | |
915 | * | |
916 | * Store the supported bus formats in display info structure. | |
917 | * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for | |
918 | * a full list of available formats. | |
f85d9e59 RD |
919 | * |
920 | * Returns: | |
921 | * 0 on success or a negative error code on failure. | |
b3c6c8bf DV |
922 | */ |
923 | int drm_display_info_set_bus_formats(struct drm_display_info *info, | |
924 | const u32 *formats, | |
925 | unsigned int num_formats) | |
926 | { | |
927 | u32 *fmts = NULL; | |
928 | ||
929 | if (!formats && num_formats) | |
930 | return -EINVAL; | |
931 | ||
932 | if (formats && num_formats) { | |
933 | fmts = kmemdup(formats, sizeof(*formats) * num_formats, | |
934 | GFP_KERNEL); | |
935 | if (!fmts) | |
936 | return -ENOMEM; | |
937 | } | |
938 | ||
939 | kfree(info->bus_formats); | |
940 | info->bus_formats = fmts; | |
941 | info->num_bus_formats = num_formats; | |
942 | ||
943 | return 0; | |
944 | } | |
945 | EXPORT_SYMBOL(drm_display_info_set_bus_formats); | |
946 | ||
52217195 DV |
947 | /* Optional connector properties. */ |
948 | static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] = { | |
949 | { DRM_MODE_SCALE_NONE, "None" }, | |
950 | { DRM_MODE_SCALE_FULLSCREEN, "Full" }, | |
951 | { DRM_MODE_SCALE_CENTER, "Center" }, | |
952 | { DRM_MODE_SCALE_ASPECT, "Full aspect" }, | |
953 | }; | |
954 | ||
955 | static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = { | |
956 | { DRM_MODE_PICTURE_ASPECT_NONE, "Automatic" }, | |
957 | { DRM_MODE_PICTURE_ASPECT_4_3, "4:3" }, | |
958 | { DRM_MODE_PICTURE_ASPECT_16_9, "16:9" }, | |
959 | }; | |
960 | ||
50525c33 SL |
961 | static const struct drm_prop_enum_list drm_content_type_enum_list[] = { |
962 | { DRM_MODE_CONTENT_TYPE_NO_DATA, "No Data" }, | |
963 | { DRM_MODE_CONTENT_TYPE_GRAPHICS, "Graphics" }, | |
964 | { DRM_MODE_CONTENT_TYPE_PHOTO, "Photo" }, | |
965 | { DRM_MODE_CONTENT_TYPE_CINEMA, "Cinema" }, | |
966 | { DRM_MODE_CONTENT_TYPE_GAME, "Game" }, | |
967 | }; | |
968 | ||
8d70f395 HG |
969 | static const struct drm_prop_enum_list drm_panel_orientation_enum_list[] = { |
970 | { DRM_MODE_PANEL_ORIENTATION_NORMAL, "Normal" }, | |
971 | { DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP, "Upside Down" }, | |
972 | { DRM_MODE_PANEL_ORIENTATION_LEFT_UP, "Left Side Up" }, | |
973 | { DRM_MODE_PANEL_ORIENTATION_RIGHT_UP, "Right Side Up" }, | |
974 | }; | |
975 | ||
52217195 DV |
976 | static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = { |
977 | { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ | |
978 | { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ | |
979 | { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ | |
980 | }; | |
981 | DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list) | |
982 | ||
983 | static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = { | |
e5b92773 | 984 | { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I, TV-out and DP */ |
52217195 DV |
985 | { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ |
986 | { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ | |
987 | }; | |
988 | DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name, | |
989 | drm_dvi_i_subconnector_enum_list) | |
990 | ||
7d63cd85 MR |
991 | static const struct drm_prop_enum_list drm_tv_mode_enum_list[] = { |
992 | { DRM_MODE_TV_MODE_NTSC, "NTSC" }, | |
993 | { DRM_MODE_TV_MODE_NTSC_443, "NTSC-443" }, | |
994 | { DRM_MODE_TV_MODE_NTSC_J, "NTSC-J" }, | |
995 | { DRM_MODE_TV_MODE_PAL, "PAL" }, | |
996 | { DRM_MODE_TV_MODE_PAL_M, "PAL-M" }, | |
997 | { DRM_MODE_TV_MODE_PAL_N, "PAL-N" }, | |
998 | { DRM_MODE_TV_MODE_SECAM, "SECAM" }, | |
999 | }; | |
1000 | DRM_ENUM_NAME_FN(drm_get_tv_mode_name, drm_tv_mode_enum_list) | |
1001 | ||
d4613e3e MR |
1002 | /** |
1003 | * drm_get_tv_mode_from_name - Translates a TV mode name into its enum value | |
1004 | * @name: TV Mode name we want to convert | |
1005 | * @len: Length of @name | |
1006 | * | |
1007 | * Translates @name into an enum drm_connector_tv_mode. | |
1008 | * | |
1009 | * Returns: the enum value on success, a negative errno otherwise. | |
1010 | */ | |
1011 | int drm_get_tv_mode_from_name(const char *name, size_t len) | |
1012 | { | |
1013 | unsigned int i; | |
1014 | ||
1015 | for (i = 0; i < ARRAY_SIZE(drm_tv_mode_enum_list); i++) { | |
1016 | const struct drm_prop_enum_list *item = &drm_tv_mode_enum_list[i]; | |
1017 | ||
1018 | if (strlen(item->name) == len && !strncmp(item->name, name, len)) | |
1019 | return item->type; | |
1020 | } | |
1021 | ||
1022 | return -EINVAL; | |
1023 | } | |
1024 | EXPORT_SYMBOL(drm_get_tv_mode_from_name); | |
1025 | ||
52217195 DV |
1026 | static const struct drm_prop_enum_list drm_tv_select_enum_list[] = { |
1027 | { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ | |
1028 | { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ | |
1029 | { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ | |
1030 | { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ | |
1031 | { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ | |
1032 | }; | |
1033 | DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list) | |
1034 | ||
1035 | static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = { | |
e5b92773 | 1036 | { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I, TV-out and DP */ |
52217195 DV |
1037 | { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ |
1038 | { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ | |
1039 | { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ | |
1040 | { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ | |
1041 | }; | |
1042 | DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name, | |
1043 | drm_tv_subconnector_enum_list) | |
1044 | ||
e5b92773 OV |
1045 | static const struct drm_prop_enum_list drm_dp_subconnector_enum_list[] = { |
1046 | { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I, TV-out and DP */ | |
1047 | { DRM_MODE_SUBCONNECTOR_VGA, "VGA" }, /* DP */ | |
1048 | { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DP */ | |
1049 | { DRM_MODE_SUBCONNECTOR_HDMIA, "HDMI" }, /* DP */ | |
1050 | { DRM_MODE_SUBCONNECTOR_DisplayPort, "DP" }, /* DP */ | |
1051 | { DRM_MODE_SUBCONNECTOR_Wireless, "Wireless" }, /* DP */ | |
1052 | { DRM_MODE_SUBCONNECTOR_Native, "Native" }, /* DP */ | |
1053 | }; | |
1054 | ||
1055 | DRM_ENUM_NAME_FN(drm_get_dp_subconnector_name, | |
1056 | drm_dp_subconnector_enum_list) | |
1057 | ||
c627087c HW |
1058 | |
1059 | static const char * const colorspace_names[] = { | |
d2c6a405 | 1060 | /* For Default case, driver will set the colorspace */ |
c627087c | 1061 | [DRM_MODE_COLORIMETRY_DEFAULT] = "Default", |
d2c6a405 | 1062 | /* Standard Definition Colorimetry based on CEA 861 */ |
c627087c HW |
1063 | [DRM_MODE_COLORIMETRY_SMPTE_170M_YCC] = "SMPTE_170M_YCC", |
1064 | [DRM_MODE_COLORIMETRY_BT709_YCC] = "BT709_YCC", | |
d2c6a405 | 1065 | /* Standard Definition Colorimetry based on IEC 61966-2-4 */ |
c627087c | 1066 | [DRM_MODE_COLORIMETRY_XVYCC_601] = "XVYCC_601", |
d2c6a405 | 1067 | /* High Definition Colorimetry based on IEC 61966-2-4 */ |
c627087c | 1068 | [DRM_MODE_COLORIMETRY_XVYCC_709] = "XVYCC_709", |
d2c6a405 | 1069 | /* Colorimetry based on IEC 61966-2-1/Amendment 1 */ |
c627087c | 1070 | [DRM_MODE_COLORIMETRY_SYCC_601] = "SYCC_601", |
d2c6a405 | 1071 | /* Colorimetry based on IEC 61966-2-5 [33] */ |
c627087c | 1072 | [DRM_MODE_COLORIMETRY_OPYCC_601] = "opYCC_601", |
d2c6a405 | 1073 | /* Colorimetry based on IEC 61966-2-5 */ |
c627087c | 1074 | [DRM_MODE_COLORIMETRY_OPRGB] = "opRGB", |
d2c6a405 | 1075 | /* Colorimetry based on ITU-R BT.2020 */ |
c627087c | 1076 | [DRM_MODE_COLORIMETRY_BT2020_CYCC] = "BT2020_CYCC", |
d2c6a405 | 1077 | /* Colorimetry based on ITU-R BT.2020 */ |
c627087c | 1078 | [DRM_MODE_COLORIMETRY_BT2020_RGB] = "BT2020_RGB", |
d2c6a405 | 1079 | /* Colorimetry based on ITU-R BT.2020 */ |
c627087c | 1080 | [DRM_MODE_COLORIMETRY_BT2020_YCC] = "BT2020_YCC", |
d2c6a405 | 1081 | /* Added as part of Additional Colorimetry Extension in 861.G */ |
c627087c HW |
1082 | [DRM_MODE_COLORIMETRY_DCI_P3_RGB_D65] = "DCI-P3_RGB_D65", |
1083 | [DRM_MODE_COLORIMETRY_DCI_P3_RGB_THEATER] = "DCI-P3_RGB_Theater", | |
1084 | [DRM_MODE_COLORIMETRY_RGB_WIDE_FIXED] = "RGB_WIDE_FIXED", | |
1085 | /* Colorimetry based on scRGB (IEC 61966-2-2) */ | |
1086 | [DRM_MODE_COLORIMETRY_RGB_WIDE_FLOAT] = "RGB_WIDE_FLOAT", | |
1087 | [DRM_MODE_COLORIMETRY_BT601_YCC] = "BT601_YCC", | |
d2c6a405 US |
1088 | }; |
1089 | ||
035d53e0 HW |
1090 | /** |
1091 | * drm_get_colorspace_name - return a string for color encoding | |
1092 | * @colorspace: color space to compute name of | |
1093 | * | |
1094 | * In contrast to the other drm_get_*_name functions this one here returns a | |
1095 | * const pointer and hence is threadsafe. | |
1096 | */ | |
1097 | const char *drm_get_colorspace_name(enum drm_colorspace colorspace) | |
1098 | { | |
1099 | if (colorspace < ARRAY_SIZE(colorspace_names) && colorspace_names[colorspace]) | |
1100 | return colorspace_names[colorspace]; | |
1101 | else | |
1102 | return "(null)"; | |
1103 | } | |
1104 | ||
c627087c HW |
1105 | static const u32 hdmi_colorspaces = |
1106 | BIT(DRM_MODE_COLORIMETRY_SMPTE_170M_YCC) | | |
1107 | BIT(DRM_MODE_COLORIMETRY_BT709_YCC) | | |
1108 | BIT(DRM_MODE_COLORIMETRY_XVYCC_601) | | |
1109 | BIT(DRM_MODE_COLORIMETRY_XVYCC_709) | | |
1110 | BIT(DRM_MODE_COLORIMETRY_SYCC_601) | | |
1111 | BIT(DRM_MODE_COLORIMETRY_OPYCC_601) | | |
1112 | BIT(DRM_MODE_COLORIMETRY_OPRGB) | | |
1113 | BIT(DRM_MODE_COLORIMETRY_BT2020_CYCC) | | |
1114 | BIT(DRM_MODE_COLORIMETRY_BT2020_RGB) | | |
1115 | BIT(DRM_MODE_COLORIMETRY_BT2020_YCC) | | |
1116 | BIT(DRM_MODE_COLORIMETRY_DCI_P3_RGB_D65) | | |
1117 | BIT(DRM_MODE_COLORIMETRY_DCI_P3_RGB_THEATER); | |
1118 | ||
45cf0e91 GM |
1119 | /* |
1120 | * As per DP 1.4a spec, 2.2.5.7.5 VSC SDP Payload for Pixel Encoding/Colorimetry | |
1121 | * Format Table 2-120 | |
1122 | */ | |
c627087c HW |
1123 | static const u32 dp_colorspaces = |
1124 | BIT(DRM_MODE_COLORIMETRY_RGB_WIDE_FIXED) | | |
1125 | BIT(DRM_MODE_COLORIMETRY_RGB_WIDE_FLOAT) | | |
1126 | BIT(DRM_MODE_COLORIMETRY_OPRGB) | | |
1127 | BIT(DRM_MODE_COLORIMETRY_DCI_P3_RGB_D65) | | |
1128 | BIT(DRM_MODE_COLORIMETRY_BT2020_RGB) | | |
1129 | BIT(DRM_MODE_COLORIMETRY_BT601_YCC) | | |
1130 | BIT(DRM_MODE_COLORIMETRY_BT709_YCC) | | |
1131 | BIT(DRM_MODE_COLORIMETRY_XVYCC_601) | | |
1132 | BIT(DRM_MODE_COLORIMETRY_XVYCC_709) | | |
1133 | BIT(DRM_MODE_COLORIMETRY_SYCC_601) | | |
1134 | BIT(DRM_MODE_COLORIMETRY_OPYCC_601) | | |
1135 | BIT(DRM_MODE_COLORIMETRY_BT2020_CYCC) | | |
1136 | BIT(DRM_MODE_COLORIMETRY_BT2020_YCC); | |
45cf0e91 | 1137 | |
4ada6f22 DV |
1138 | /** |
1139 | * DOC: standard connector properties | |
1140 | * | |
1141 | * DRM connectors have a few standardized properties: | |
1142 | * | |
1143 | * EDID: | |
1144 | * Blob property which contains the current EDID read from the sink. This | |
1145 | * is useful to parse sink identification information like vendor, model | |
1146 | * and serial. Drivers should update this property by calling | |
c555f023 | 1147 | * drm_connector_update_edid_property(), usually after having parsed |
4ada6f22 DV |
1148 | * the EDID using drm_add_edid_modes(). Userspace cannot change this |
1149 | * property. | |
12767469 SS |
1150 | * |
1151 | * User-space should not parse the EDID to obtain information exposed via | |
1152 | * other KMS properties (because the kernel might apply limits, quirks or | |
1153 | * fixups to the EDID). For instance, user-space should not try to parse | |
1154 | * mode lists from the EDID. | |
4ada6f22 DV |
1155 | * DPMS: |
1156 | * Legacy property for setting the power state of the connector. For atomic | |
1157 | * drivers this is only provided for backwards compatibility with existing | |
1158 | * drivers, it remaps to controlling the "ACTIVE" property on the CRTC the | |
1159 | * connector is linked to. Drivers should never set this property directly, | |
d574528a | 1160 | * it is handled by the DRM core by calling the &drm_connector_funcs.dpms |
144a7999 | 1161 | * callback. For atomic drivers the remapping to the "ACTIVE" property is |
1e3e4cae | 1162 | * implemented in the DRM core. |
d0d1aee5 DV |
1163 | * |
1164 | * Note that this property cannot be set through the MODE_ATOMIC ioctl, | |
1165 | * userspace must use "ACTIVE" on the CRTC instead. | |
1166 | * | |
1167 | * WARNING: | |
1168 | * | |
1169 | * For userspace also running on legacy drivers the "DPMS" semantics are a | |
1170 | * lot more complicated. First, userspace cannot rely on the "DPMS" value | |
1171 | * returned by the GETCONNECTOR actually reflecting reality, because many | |
1172 | * drivers fail to update it. For atomic drivers this is taken care of in | |
1173 | * drm_atomic_helper_update_legacy_modeset_state(). | |
1174 | * | |
1175 | * The second issue is that the DPMS state is only well-defined when the | |
1176 | * connector is connected to a CRTC. In atomic the DRM core enforces that | |
1177 | * "ACTIVE" is off in such a case, no such checks exists for "DPMS". | |
1178 | * | |
1179 | * Finally, when enabling an output using the legacy SETCONFIG ioctl then | |
1180 | * "DPMS" is forced to ON. But see above, that might not be reflected in | |
1181 | * the software value on legacy drivers. | |
1182 | * | |
1183 | * Summarizing: Only set "DPMS" when the connector is known to be enabled, | |
1184 | * assume that a successful SETCONFIG call also sets "DPMS" to on, and | |
1185 | * never read back the value of "DPMS" because it can be incorrect. | |
4ada6f22 DV |
1186 | * PATH: |
1187 | * Connector path property to identify how this sink is physically | |
1188 | * connected. Used by DP MST. This should be set by calling | |
97e14fbe | 1189 | * drm_connector_set_path_property(), in the case of DP MST with the |
4ada6f22 DV |
1190 | * path property the MST manager created. Userspace cannot change this |
1191 | * property. | |
1192 | * TILE: | |
1193 | * Connector tile group property to indicate how a set of DRM connector | |
1194 | * compose together into one logical screen. This is used by both high-res | |
1195 | * external screens (often only using a single cable, but exposing multiple | |
1196 | * DP MST sinks), or high-res integrated panels (like dual-link DSI) which | |
1197 | * are not gen-locked. Note that for tiled panels which are genlocked, like | |
1198 | * dual-link LVDS or dual-link DSI, the driver should try to not expose the | |
84e543bc | 1199 | * tiling and virtualise both &drm_crtc and &drm_plane if needed. Drivers |
97e14fbe | 1200 | * should update this value using drm_connector_set_tile_property(). |
4ada6f22 | 1201 | * Userspace cannot change this property. |
40ee6fbe | 1202 | * link-status: |
716719a3 SP |
1203 | * Connector link-status property to indicate the status of link. The |
1204 | * default value of link-status is "GOOD". If something fails during or | |
1205 | * after modeset, the kernel driver may set this to "BAD" and issue a | |
1206 | * hotplug uevent. Drivers should update this value using | |
97e14fbe | 1207 | * drm_connector_set_link_status_property(). |
a66da873 SS |
1208 | * |
1209 | * When user-space receives the hotplug uevent and detects a "BAD" | |
1210 | * link-status, the sink doesn't receive pixels anymore (e.g. the screen | |
1211 | * becomes completely black). The list of available modes may have | |
1212 | * changed. User-space is expected to pick a new mode if the current one | |
1213 | * has disappeared and perform a new modeset with link-status set to | |
1214 | * "GOOD" to re-enable the connector. | |
1215 | * | |
1216 | * If multiple connectors share the same CRTC and one of them gets a "BAD" | |
1217 | * link-status, the other are unaffected (ie. the sinks still continue to | |
1218 | * receive pixels). | |
1219 | * | |
1220 | * When user-space performs an atomic commit on a connector with a "BAD" | |
1221 | * link-status without resetting the property to "GOOD", the sink may | |
1222 | * still not receive pixels. When user-space performs an atomic commit | |
1223 | * which resets the link-status property to "GOOD" without the | |
1224 | * ALLOW_MODESET flag set, it might fail because a modeset is required. | |
1225 | * | |
1226 | * User-space can only change link-status to "GOOD", changing it to "BAD" | |
1227 | * is a no-op. | |
1228 | * | |
1229 | * For backwards compatibility with non-atomic userspace the kernel | |
1230 | * tries to automatically set the link-status back to "GOOD" in the | |
1231 | * SETCRTC IOCTL. This might fail if the mode is no longer valid, similar | |
1232 | * to how it might fail if a different screen has been connected in the | |
1233 | * interim. | |
66660d4c DA |
1234 | * non_desktop: |
1235 | * Indicates the output should be ignored for purposes of displaying a | |
1236 | * standard desktop environment or console. This is most likely because | |
1237 | * the output device is not rectilinear. | |
24557865 SP |
1238 | * Content Protection: |
1239 | * This property is used by userspace to request the kernel protect future | |
1240 | * content communicated over the link. When requested, kernel will apply | |
1241 | * the appropriate means of protection (most often HDCP), and use the | |
1242 | * property to tell userspace the protection is active. | |
1243 | * | |
1244 | * Drivers can set this up by calling | |
1245 | * drm_connector_attach_content_protection_property() on initialization. | |
1246 | * | |
1247 | * The value of this property can be one of the following: | |
1248 | * | |
bbeba09f | 1249 | * DRM_MODE_CONTENT_PROTECTION_UNDESIRED = 0 |
24557865 | 1250 | * The link is not protected, content is transmitted in the clear. |
bbeba09f | 1251 | * DRM_MODE_CONTENT_PROTECTION_DESIRED = 1 |
24557865 SP |
1252 | * Userspace has requested content protection, but the link is not |
1253 | * currently protected. When in this state, kernel should enable | |
1254 | * Content Protection as soon as possible. | |
bbeba09f | 1255 | * DRM_MODE_CONTENT_PROTECTION_ENABLED = 2 |
24557865 SP |
1256 | * Userspace has requested content protection, and the link is |
1257 | * protected. Only the driver can set the property to this value. | |
1258 | * If userspace attempts to set to ENABLED, kernel will return | |
1259 | * -EINVAL. | |
1260 | * | |
1261 | * A few guidelines: | |
1262 | * | |
1263 | * - DESIRED state should be preserved until userspace de-asserts it by | |
1264 | * setting the property to UNDESIRED. This means ENABLED should only | |
1265 | * transition to UNDESIRED when the user explicitly requests it. | |
1266 | * - If the state is DESIRED, kernel should attempt to re-authenticate the | |
1267 | * link whenever possible. This includes across disable/enable, dpms, | |
1268 | * hotplug, downstream device changes, link status failures, etc.. | |
bb5a45d4 R |
1269 | * - Kernel sends uevent with the connector id and property id through |
1270 | * @drm_hdcp_update_content_protection, upon below kernel triggered | |
1271 | * scenarios: | |
12db36bc SP |
1272 | * |
1273 | * - DESIRED -> ENABLED (authentication success) | |
1274 | * - ENABLED -> DESIRED (termination of authentication) | |
bb5a45d4 R |
1275 | * - Please note no uevents for userspace triggered property state changes, |
1276 | * which can't fail such as | |
12db36bc SP |
1277 | * |
1278 | * - DESIRED/ENABLED -> UNDESIRED | |
1279 | * - UNDESIRED -> DESIRED | |
bb5a45d4 R |
1280 | * - Userspace is responsible for polling the property or listen to uevents |
1281 | * to determine when the value transitions from ENABLED to DESIRED. | |
1282 | * This signifies the link is no longer protected and userspace should | |
1283 | * take appropriate action (whatever that might be). | |
4ada6f22 | 1284 | * |
7672dbba R |
1285 | * HDCP Content Type: |
1286 | * This Enum property is used by the userspace to declare the content type | |
1287 | * of the display stream, to kernel. Here display stream stands for any | |
1288 | * display content that userspace intended to display through HDCP | |
1289 | * encryption. | |
1290 | * | |
1291 | * Content Type of a stream is decided by the owner of the stream, as | |
1292 | * "HDCP Type0" or "HDCP Type1". | |
1293 | * | |
1294 | * The value of the property can be one of the below: | |
1295 | * - "HDCP Type0": DRM_MODE_HDCP_CONTENT_TYPE0 = 0 | |
1296 | * - "HDCP Type1": DRM_MODE_HDCP_CONTENT_TYPE1 = 1 | |
1297 | * | |
1298 | * When kernel starts the HDCP authentication (see "Content Protection" | |
1299 | * for details), it uses the content type in "HDCP Content Type" | |
1300 | * for performing the HDCP authentication with the display sink. | |
1301 | * | |
1302 | * Please note in HDCP spec versions, a link can be authenticated with | |
1303 | * HDCP 2.2 for Content Type 0/Content Type 1. Where as a link can be | |
1304 | * authenticated with HDCP1.4 only for Content Type 0(though it is implicit | |
1305 | * in nature. As there is no reference for Content Type in HDCP1.4). | |
1306 | * | |
1307 | * HDCP2.2 authentication protocol itself takes the "Content Type" as a | |
1308 | * parameter, which is a input for the DP HDCP2.2 encryption algo. | |
1309 | * | |
1310 | * In case of Type 0 content protection request, kernel driver can choose | |
1311 | * either of HDCP spec versions 1.4 and 2.2. When HDCP2.2 is used for | |
1312 | * "HDCP Type 0", a HDCP 2.2 capable repeater in the downstream can send | |
1313 | * that content to a HDCP 1.4 authenticated HDCP sink (Type0 link). | |
1314 | * But if the content is classified as "HDCP Type 1", above mentioned | |
1315 | * HDCP 2.2 repeater wont send the content to the HDCP sink as it can't | |
1316 | * authenticate the HDCP1.4 capable sink for "HDCP Type 1". | |
1317 | * | |
1318 | * Please note userspace can be ignorant of the HDCP versions used by the | |
1319 | * kernel driver to achieve the "HDCP Content Type". | |
1320 | * | |
1321 | * At current scenario, classifying a content as Type 1 ensures that the | |
1322 | * content will be displayed only through the HDCP2.2 encrypted link. | |
1323 | * | |
1324 | * Note that the HDCP Content Type property is introduced at HDCP 2.2, and | |
1325 | * defaults to type 0. It is only exposed by drivers supporting HDCP 2.2 | |
1326 | * (hence supporting Type 0 and Type 1). Based on how next versions of | |
1327 | * HDCP specs are defined content Type could be used for higher versions | |
1328 | * too. | |
1329 | * | |
1330 | * If content type is changed when "Content Protection" is not UNDESIRED, | |
1331 | * then kernel will disable the HDCP and re-enable with new type in the | |
1332 | * same atomic commit. And when "Content Protection" is ENABLED, it means | |
1333 | * that link is HDCP authenticated and encrypted, for the transmission of | |
1334 | * the Type of stream mentioned at "HDCP Content Type". | |
1335 | * | |
a09db883 US |
1336 | * HDR_OUTPUT_METADATA: |
1337 | * Connector property to enable userspace to send HDR Metadata to | |
1338 | * driver. This metadata is based on the composition and blending | |
1339 | * policies decided by user, taking into account the hardware and | |
1340 | * sink capabilities. The driver gets this metadata and creates a | |
1341 | * Dynamic Range and Mastering Infoframe (DRM) in case of HDMI, | |
1342 | * SDP packet (Non-audio INFOFRAME SDP v1.3) for DP. This is then | |
1343 | * sent to sink. This notifies the sink of the upcoming frame's Color | |
1344 | * Encoding and Luminance parameters. | |
1345 | * | |
1346 | * Userspace first need to detect the HDR capabilities of sink by | |
1347 | * reading and parsing the EDID. Details of HDR metadata for HDMI | |
1348 | * are added in CTA 861.G spec. For DP , its defined in VESA DP | |
1349 | * Standard v1.4. It needs to then get the metadata information | |
1350 | * of the video/game/app content which are encoded in HDR (basically | |
1351 | * using HDR transfer functions). With this information it needs to | |
1352 | * decide on a blending policy and compose the relevant | |
1353 | * layers/overlays into a common format. Once this blending is done, | |
1354 | * userspace will be aware of the metadata of the composed frame to | |
1355 | * be send to sink. It then uses this property to communicate this | |
1356 | * metadata to driver which then make a Infoframe packet and sends | |
1357 | * to sink based on the type of encoder connected. | |
1358 | * | |
1359 | * Userspace will be responsible to do Tone mapping operation in case: | |
1360 | * - Some layers are HDR and others are SDR | |
1361 | * - HDR layers luminance is not same as sink | |
9f9b2559 | 1362 | * |
a09db883 US |
1363 | * It will even need to do colorspace conversion and get all layers |
1364 | * to one common colorspace for blending. It can use either GL, Media | |
84e543bc | 1365 | * or display engine to get this done based on the capabilities of the |
a09db883 US |
1366 | * associated hardware. |
1367 | * | |
1368 | * Driver expects metadata to be put in &struct hdr_output_metadata | |
1369 | * structure from userspace. This is received as blob and stored in | |
1370 | * &drm_connector_state.hdr_output_metadata. It parses EDID and saves the | |
1371 | * sink metadata in &struct hdr_sink_metadata, as | |
1372 | * &drm_connector.hdr_sink_metadata. Driver uses | |
1373 | * drm_hdmi_infoframe_set_hdr_metadata() helper to set the HDR metadata, | |
1374 | * hdmi_drm_infoframe_pack() to pack the infoframe as per spec, in case of | |
1375 | * HDMI encoder. | |
1376 | * | |
47e22ff1 RS |
1377 | * max bpc: |
1378 | * This range property is used by userspace to limit the bit depth. When | |
1379 | * used the driver would limit the bpc in accordance with the valid range | |
1380 | * supported by the hardware and sink. Drivers to use the function | |
1381 | * drm_connector_attach_max_bpc_property() to create and attach the | |
1382 | * property to the connector during initialization. | |
1383 | * | |
4ada6f22 DV |
1384 | * Connectors also have one standardized atomic property: |
1385 | * | |
1386 | * CRTC_ID: | |
1387 | * Mode object ID of the &drm_crtc this connector should be connected to. | |
8d70f395 HG |
1388 | * |
1389 | * Connectors for LCD panels may also have one standardized property: | |
1390 | * | |
1391 | * panel orientation: | |
1392 | * On some devices the LCD panel is mounted in the casing in such a way | |
1393 | * that the up/top side of the panel does not match with the top side of | |
1394 | * the device. Userspace can use this property to check for this. | |
1395 | * Note that input coordinates from touchscreens (input devices with | |
1396 | * INPUT_PROP_DIRECT) will still map 1:1 to the actual LCD panel | |
1397 | * coordinates, so if userspace rotates the picture to adjust for | |
1398 | * the orientation it must also apply the same transformation to the | |
bbeba09f | 1399 | * touchscreen input coordinates. This property is initialized by calling |
69654c63 DB |
1400 | * drm_connector_set_panel_orientation() or |
1401 | * drm_connector_set_panel_orientation_with_quirk() | |
bbeba09f DV |
1402 | * |
1403 | * scaling mode: | |
1404 | * This property defines how a non-native mode is upscaled to the native | |
1405 | * mode of an LCD panel: | |
1406 | * | |
1407 | * None: | |
1408 | * No upscaling happens, scaling is left to the panel. Not all | |
1409 | * drivers expose this mode. | |
1410 | * Full: | |
1411 | * The output is upscaled to the full resolution of the panel, | |
1412 | * ignoring the aspect ratio. | |
1413 | * Center: | |
1414 | * No upscaling happens, the output is centered within the native | |
1415 | * resolution the panel. | |
1416 | * Full aspect: | |
1417 | * The output is upscaled to maximize either the width or height | |
1418 | * while retaining the aspect ratio. | |
1419 | * | |
1420 | * This property should be set up by calling | |
1421 | * drm_connector_attach_scaling_mode_property(). Note that drivers | |
1422 | * can also expose this property to external outputs, in which case they | |
1423 | * must support "None", which should be the default (since external screens | |
1424 | * have a built-in scaler). | |
e5b92773 OV |
1425 | * |
1426 | * subconnector: | |
1427 | * This property is used by DVI-I, TVout and DisplayPort to indicate different | |
1428 | * connector subtypes. Enum values more or less match with those from main | |
1429 | * connector types. | |
1430 | * For DVI-I and TVout there is also a matching property "select subconnector" | |
1431 | * allowing to switch between signal types. | |
1432 | * DP subconnector corresponds to a downstream port. | |
107fe904 RJ |
1433 | * |
1434 | * privacy-screen sw-state, privacy-screen hw-state: | |
1435 | * These 2 optional properties can be used to query the state of the | |
1436 | * electronic privacy screen that is available on some displays; and in | |
1437 | * some cases also control the state. If a driver implements these | |
1438 | * properties then both properties must be present. | |
1439 | * | |
1440 | * "privacy-screen hw-state" is read-only and reflects the actual state | |
1441 | * of the privacy-screen, possible values: "Enabled", "Disabled, | |
1442 | * "Enabled-locked", "Disabled-locked". The locked states indicate | |
1443 | * that the state cannot be changed through the DRM API. E.g. there | |
1444 | * might be devices where the firmware-setup options, or a hardware | |
1445 | * slider-switch, offer always on / off modes. | |
1446 | * | |
1447 | * "privacy-screen sw-state" can be set to change the privacy-screen state | |
1448 | * when not locked. In this case the driver must update the hw-state | |
1449 | * property to reflect the new state on completion of the commit of the | |
1450 | * sw-state property. Setting the sw-state property when the hw-state is | |
1451 | * locked must be interpreted by the driver as a request to change the | |
1452 | * state to the set state when the hw-state becomes unlocked. E.g. if | |
1453 | * "privacy-screen hw-state" is "Enabled-locked" and the sw-state | |
1454 | * gets set to "Disabled" followed by the user unlocking the state by | |
1455 | * changing the slider-switch position, then the driver must set the | |
1456 | * state to "Disabled" upon receiving the unlock event. | |
1457 | * | |
1458 | * In some cases the privacy-screen's actual state might change outside of | |
1459 | * control of the DRM code. E.g. there might be a firmware handled hotkey | |
1460 | * which toggles the actual state, or the actual state might be changed | |
1461 | * through another userspace API such as writing /proc/acpi/ibm/lcdshadow. | |
1462 | * In this case the driver must update both the hw-state and the sw-state | |
1463 | * to reflect the new value, overwriting any pending state requests in the | |
1464 | * sw-state. Any pending sw-state requests are thus discarded. | |
1465 | * | |
1466 | * Note that the ability for the state to change outside of control of | |
1467 | * the DRM master process means that userspace must not cache the value | |
1468 | * of the sw-state. Caching the sw-state value and including it in later | |
1469 | * atomic commits may lead to overriding a state change done through e.g. | |
1470 | * a firmware handled hotkey. Therefor userspace must not include the | |
1471 | * privacy-screen sw-state in an atomic commit unless it wants to change | |
1472 | * its value. | |
409f07d3 SS |
1473 | * |
1474 | * left margin, right margin, top margin, bottom margin: | |
1475 | * Add margins to the connector's viewport. This is typically used to | |
3cf15dc2 | 1476 | * mitigate overscan on TVs. |
409f07d3 SS |
1477 | * |
1478 | * The value is the size in pixels of the black border which will be | |
1479 | * added. The attached CRTC's content will be scaled to fill the whole | |
1480 | * area inside the margin. | |
1481 | * | |
1482 | * The margins configuration might be sent to the sink, e.g. via HDMI AVI | |
1483 | * InfoFrames. | |
1484 | * | |
1485 | * Drivers can set up these properties by calling | |
1486 | * drm_mode_create_tv_margin_properties(). | |
4ada6f22 DV |
1487 | */ |
1488 | ||
52217195 DV |
1489 | int drm_connector_create_standard_properties(struct drm_device *dev) |
1490 | { | |
1491 | struct drm_property *prop; | |
1492 | ||
1493 | prop = drm_property_create(dev, DRM_MODE_PROP_BLOB | | |
1494 | DRM_MODE_PROP_IMMUTABLE, | |
1495 | "EDID", 0); | |
1496 | if (!prop) | |
1497 | return -ENOMEM; | |
1498 | dev->mode_config.edid_property = prop; | |
1499 | ||
1500 | prop = drm_property_create_enum(dev, 0, | |
1501 | "DPMS", drm_dpms_enum_list, | |
1502 | ARRAY_SIZE(drm_dpms_enum_list)); | |
1503 | if (!prop) | |
1504 | return -ENOMEM; | |
1505 | dev->mode_config.dpms_property = prop; | |
1506 | ||
1507 | prop = drm_property_create(dev, | |
1508 | DRM_MODE_PROP_BLOB | | |
1509 | DRM_MODE_PROP_IMMUTABLE, | |
1510 | "PATH", 0); | |
1511 | if (!prop) | |
1512 | return -ENOMEM; | |
1513 | dev->mode_config.path_property = prop; | |
1514 | ||
1515 | prop = drm_property_create(dev, | |
1516 | DRM_MODE_PROP_BLOB | | |
1517 | DRM_MODE_PROP_IMMUTABLE, | |
1518 | "TILE", 0); | |
1519 | if (!prop) | |
1520 | return -ENOMEM; | |
1521 | dev->mode_config.tile_property = prop; | |
1522 | ||
40ee6fbe MN |
1523 | prop = drm_property_create_enum(dev, 0, "link-status", |
1524 | drm_link_status_enum_list, | |
1525 | ARRAY_SIZE(drm_link_status_enum_list)); | |
1526 | if (!prop) | |
1527 | return -ENOMEM; | |
1528 | dev->mode_config.link_status_property = prop; | |
1529 | ||
66660d4c DA |
1530 | prop = drm_property_create_bool(dev, DRM_MODE_PROP_IMMUTABLE, "non-desktop"); |
1531 | if (!prop) | |
1532 | return -ENOMEM; | |
1533 | dev->mode_config.non_desktop_property = prop; | |
1534 | ||
fbb5d035 US |
1535 | prop = drm_property_create(dev, DRM_MODE_PROP_BLOB, |
1536 | "HDR_OUTPUT_METADATA", 0); | |
1537 | if (!prop) | |
1538 | return -ENOMEM; | |
1539 | dev->mode_config.hdr_output_metadata_property = prop; | |
1540 | ||
52217195 DV |
1541 | return 0; |
1542 | } | |
1543 | ||
1544 | /** | |
1545 | * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties | |
1546 | * @dev: DRM device | |
1547 | * | |
1548 | * Called by a driver the first time a DVI-I connector is made. | |
f85d9e59 RD |
1549 | * |
1550 | * Returns: %0 | |
52217195 DV |
1551 | */ |
1552 | int drm_mode_create_dvi_i_properties(struct drm_device *dev) | |
1553 | { | |
1554 | struct drm_property *dvi_i_selector; | |
1555 | struct drm_property *dvi_i_subconnector; | |
1556 | ||
1557 | if (dev->mode_config.dvi_i_select_subconnector_property) | |
1558 | return 0; | |
1559 | ||
1560 | dvi_i_selector = | |
1561 | drm_property_create_enum(dev, 0, | |
1562 | "select subconnector", | |
1563 | drm_dvi_i_select_enum_list, | |
1564 | ARRAY_SIZE(drm_dvi_i_select_enum_list)); | |
1565 | dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector; | |
1566 | ||
1567 | dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, | |
1568 | "subconnector", | |
1569 | drm_dvi_i_subconnector_enum_list, | |
1570 | ARRAY_SIZE(drm_dvi_i_subconnector_enum_list)); | |
1571 | dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector; | |
1572 | ||
1573 | return 0; | |
1574 | } | |
1575 | EXPORT_SYMBOL(drm_mode_create_dvi_i_properties); | |
1576 | ||
e5b92773 OV |
1577 | /** |
1578 | * drm_connector_attach_dp_subconnector_property - create subconnector property for DP | |
1579 | * @connector: drm_connector to attach property | |
1580 | * | |
1581 | * Called by a driver when DP connector is created. | |
1582 | */ | |
1583 | void drm_connector_attach_dp_subconnector_property(struct drm_connector *connector) | |
1584 | { | |
1585 | struct drm_mode_config *mode_config = &connector->dev->mode_config; | |
1586 | ||
1587 | if (!mode_config->dp_subconnector_property) | |
1588 | mode_config->dp_subconnector_property = | |
1589 | drm_property_create_enum(connector->dev, | |
1590 | DRM_MODE_PROP_IMMUTABLE, | |
1591 | "subconnector", | |
1592 | drm_dp_subconnector_enum_list, | |
1593 | ARRAY_SIZE(drm_dp_subconnector_enum_list)); | |
1594 | ||
1595 | drm_object_attach_property(&connector->base, | |
1596 | mode_config->dp_subconnector_property, | |
1597 | DRM_MODE_SUBCONNECTOR_Unknown); | |
1598 | } | |
1599 | EXPORT_SYMBOL(drm_connector_attach_dp_subconnector_property); | |
1600 | ||
50525c33 SL |
1601 | /** |
1602 | * DOC: HDMI connector properties | |
1603 | * | |
1604 | * content type (HDMI specific): | |
1605 | * Indicates content type setting to be used in HDMI infoframes to indicate | |
1e55a53a | 1606 | * content type for the external device, so that it adjusts its display |
50525c33 SL |
1607 | * settings accordingly. |
1608 | * | |
1609 | * The value of this property can be one of the following: | |
1610 | * | |
1611 | * No Data: | |
1612 | * Content type is unknown | |
1613 | * Graphics: | |
1614 | * Content type is graphics | |
1615 | * Photo: | |
1616 | * Content type is photo | |
1617 | * Cinema: | |
1618 | * Content type is cinema | |
1619 | * Game: | |
1620 | * Content type is game | |
1621 | * | |
a0a33067 SS |
1622 | * The meaning of each content type is defined in CTA-861-G table 15. |
1623 | * | |
50525c33 SL |
1624 | * Drivers can set up this property by calling |
1625 | * drm_connector_attach_content_type_property(). Decoding to | |
ba609631 | 1626 | * infoframe values is done through drm_hdmi_avi_infoframe_content_type(). |
50525c33 SL |
1627 | */ |
1628 | ||
7d63cd85 MR |
1629 | /* |
1630 | * TODO: Document the properties: | |
7d63cd85 MR |
1631 | * - brightness |
1632 | * - contrast | |
1633 | * - flicker reduction | |
1634 | * - hue | |
1635 | * - mode | |
1636 | * - overscan | |
1637 | * - saturation | |
1638 | * - select subconnector | |
7d63cd85 MR |
1639 | */ |
1640 | /** | |
1641 | * DOC: Analog TV Connector Properties | |
1642 | * | |
1643 | * TV Mode: | |
1644 | * Indicates the TV Mode used on an analog TV connector. The value | |
1645 | * of this property can be one of the following: | |
1646 | * | |
1647 | * NTSC: | |
1648 | * TV Mode is CCIR System M (aka 525-lines) together with | |
1649 | * the NTSC Color Encoding. | |
1650 | * | |
1651 | * NTSC-443: | |
1652 | * | |
1653 | * TV Mode is CCIR System M (aka 525-lines) together with | |
1654 | * the NTSC Color Encoding, but with a color subcarrier | |
1655 | * frequency of 4.43MHz | |
1656 | * | |
1657 | * NTSC-J: | |
1658 | * | |
1659 | * TV Mode is CCIR System M (aka 525-lines) together with | |
1660 | * the NTSC Color Encoding, but with a black level equal to | |
1661 | * the blanking level. | |
1662 | * | |
1663 | * PAL: | |
1664 | * | |
1665 | * TV Mode is CCIR System B (aka 625-lines) together with | |
1666 | * the PAL Color Encoding. | |
1667 | * | |
1668 | * PAL-M: | |
1669 | * | |
1670 | * TV Mode is CCIR System M (aka 525-lines) together with | |
1671 | * the PAL Color Encoding. | |
1672 | * | |
1673 | * PAL-N: | |
1674 | * | |
1675 | * TV Mode is CCIR System N together with the PAL Color | |
1676 | * Encoding, a color subcarrier frequency of 3.58MHz, the | |
1677 | * SECAM color space, and narrower channels than other PAL | |
1678 | * variants. | |
1679 | * | |
1680 | * SECAM: | |
1681 | * | |
1682 | * TV Mode is CCIR System B (aka 625-lines) together with | |
1683 | * the SECAM Color Encoding. | |
1684 | * | |
1685 | * Drivers can set up this property by calling | |
1686 | * drm_mode_create_tv_properties(). | |
1687 | */ | |
1688 | ||
50525c33 SL |
1689 | /** |
1690 | * drm_connector_attach_content_type_property - attach content-type property | |
1691 | * @connector: connector to attach content type property on. | |
1692 | * | |
1693 | * Called by a driver the first time a HDMI connector is made. | |
f85d9e59 RD |
1694 | * |
1695 | * Returns: %0 | |
50525c33 SL |
1696 | */ |
1697 | int drm_connector_attach_content_type_property(struct drm_connector *connector) | |
1698 | { | |
1699 | if (!drm_mode_create_content_type_property(connector->dev)) | |
1700 | drm_object_attach_property(&connector->base, | |
1701 | connector->dev->mode_config.content_type_property, | |
1702 | DRM_MODE_CONTENT_TYPE_NO_DATA); | |
1703 | return 0; | |
1704 | } | |
1705 | EXPORT_SYMBOL(drm_connector_attach_content_type_property); | |
1706 | ||
52217195 | 1707 | /** |
e9d2871f MCC |
1708 | * drm_connector_attach_tv_margin_properties - attach TV connector margin |
1709 | * properties | |
6c4f52dc BB |
1710 | * @connector: DRM connector |
1711 | * | |
1712 | * Called by a driver when it needs to attach TV margin props to a connector. | |
1713 | * Typically used on SDTV and HDMI connectors. | |
1714 | */ | |
1715 | void drm_connector_attach_tv_margin_properties(struct drm_connector *connector) | |
1716 | { | |
1717 | struct drm_device *dev = connector->dev; | |
1718 | ||
1719 | drm_object_attach_property(&connector->base, | |
1720 | dev->mode_config.tv_left_margin_property, | |
1721 | 0); | |
1722 | drm_object_attach_property(&connector->base, | |
1723 | dev->mode_config.tv_right_margin_property, | |
1724 | 0); | |
1725 | drm_object_attach_property(&connector->base, | |
1726 | dev->mode_config.tv_top_margin_property, | |
1727 | 0); | |
1728 | drm_object_attach_property(&connector->base, | |
1729 | dev->mode_config.tv_bottom_margin_property, | |
1730 | 0); | |
1731 | } | |
1732 | EXPORT_SYMBOL(drm_connector_attach_tv_margin_properties); | |
1733 | ||
1734 | /** | |
1735 | * drm_mode_create_tv_margin_properties - create TV connector margin properties | |
1736 | * @dev: DRM device | |
1737 | * | |
1738 | * Called by a driver's HDMI connector initialization routine, this function | |
1739 | * creates the TV margin properties for a given device. No need to call this | |
1740 | * function for an SDTV connector, it's already called from | |
80ed86d4 | 1741 | * drm_mode_create_tv_properties_legacy(). |
f85d9e59 RD |
1742 | * |
1743 | * Returns: | |
1744 | * 0 on success or a negative error code on failure. | |
6c4f52dc BB |
1745 | */ |
1746 | int drm_mode_create_tv_margin_properties(struct drm_device *dev) | |
1747 | { | |
1748 | if (dev->mode_config.tv_left_margin_property) | |
1749 | return 0; | |
1750 | ||
1751 | dev->mode_config.tv_left_margin_property = | |
1752 | drm_property_create_range(dev, 0, "left margin", 0, 100); | |
1753 | if (!dev->mode_config.tv_left_margin_property) | |
1754 | return -ENOMEM; | |
1755 | ||
1756 | dev->mode_config.tv_right_margin_property = | |
1757 | drm_property_create_range(dev, 0, "right margin", 0, 100); | |
1758 | if (!dev->mode_config.tv_right_margin_property) | |
1759 | return -ENOMEM; | |
1760 | ||
1761 | dev->mode_config.tv_top_margin_property = | |
1762 | drm_property_create_range(dev, 0, "top margin", 0, 100); | |
1763 | if (!dev->mode_config.tv_top_margin_property) | |
1764 | return -ENOMEM; | |
1765 | ||
1766 | dev->mode_config.tv_bottom_margin_property = | |
1767 | drm_property_create_range(dev, 0, "bottom margin", 0, 100); | |
1768 | if (!dev->mode_config.tv_bottom_margin_property) | |
1769 | return -ENOMEM; | |
1770 | ||
1771 | return 0; | |
1772 | } | |
1773 | EXPORT_SYMBOL(drm_mode_create_tv_margin_properties); | |
1774 | ||
52217195 | 1775 | /** |
80ed86d4 | 1776 | * drm_mode_create_tv_properties_legacy - create TV specific connector properties |
52217195 DV |
1777 | * @dev: DRM device |
1778 | * @num_modes: number of different TV formats (modes) supported | |
1779 | * @modes: array of pointers to strings containing name of each format | |
1780 | * | |
1781 | * Called by a driver's TV initialization routine, this function creates | |
1782 | * the TV specific connector properties for a given device. Caller is | |
1783 | * responsible for allocating a list of format names and passing them to | |
1784 | * this routine. | |
f85d9e59 | 1785 | * |
7d63cd85 MR |
1786 | * NOTE: This functions registers the deprecated "mode" connector |
1787 | * property to select the analog TV mode (ie, NTSC, PAL, etc.). New | |
1788 | * drivers must use drm_mode_create_tv_properties() instead. | |
1789 | * | |
f85d9e59 RD |
1790 | * Returns: |
1791 | * 0 on success or a negative error code on failure. | |
52217195 | 1792 | */ |
80ed86d4 MR |
1793 | int drm_mode_create_tv_properties_legacy(struct drm_device *dev, |
1794 | unsigned int num_modes, | |
1795 | const char * const modes[]) | |
52217195 DV |
1796 | { |
1797 | struct drm_property *tv_selector; | |
1798 | struct drm_property *tv_subconnector; | |
1799 | unsigned int i; | |
1800 | ||
1801 | if (dev->mode_config.tv_select_subconnector_property) | |
1802 | return 0; | |
1803 | ||
1804 | /* | |
1805 | * Basic connector properties | |
1806 | */ | |
1807 | tv_selector = drm_property_create_enum(dev, 0, | |
1808 | "select subconnector", | |
1809 | drm_tv_select_enum_list, | |
1810 | ARRAY_SIZE(drm_tv_select_enum_list)); | |
1811 | if (!tv_selector) | |
1812 | goto nomem; | |
1813 | ||
1814 | dev->mode_config.tv_select_subconnector_property = tv_selector; | |
1815 | ||
1816 | tv_subconnector = | |
1817 | drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, | |
1818 | "subconnector", | |
1819 | drm_tv_subconnector_enum_list, | |
1820 | ARRAY_SIZE(drm_tv_subconnector_enum_list)); | |
1821 | if (!tv_subconnector) | |
1822 | goto nomem; | |
1823 | dev->mode_config.tv_subconnector_property = tv_subconnector; | |
1824 | ||
1825 | /* | |
1826 | * Other, TV specific properties: margins & TV modes. | |
1827 | */ | |
6c4f52dc | 1828 | if (drm_mode_create_tv_margin_properties(dev)) |
52217195 DV |
1829 | goto nomem; |
1830 | ||
aab5aaa7 MR |
1831 | if (num_modes) { |
1832 | dev->mode_config.legacy_tv_mode_property = | |
1833 | drm_property_create(dev, DRM_MODE_PROP_ENUM, | |
1834 | "mode", num_modes); | |
1835 | if (!dev->mode_config.legacy_tv_mode_property) | |
1836 | goto nomem; | |
1837 | ||
1838 | for (i = 0; i < num_modes; i++) | |
1839 | drm_property_add_enum(dev->mode_config.legacy_tv_mode_property, | |
1840 | i, modes[i]); | |
1841 | } | |
52217195 DV |
1842 | |
1843 | dev->mode_config.tv_brightness_property = | |
1844 | drm_property_create_range(dev, 0, "brightness", 0, 100); | |
1845 | if (!dev->mode_config.tv_brightness_property) | |
1846 | goto nomem; | |
1847 | ||
1848 | dev->mode_config.tv_contrast_property = | |
1849 | drm_property_create_range(dev, 0, "contrast", 0, 100); | |
1850 | if (!dev->mode_config.tv_contrast_property) | |
1851 | goto nomem; | |
1852 | ||
1853 | dev->mode_config.tv_flicker_reduction_property = | |
1854 | drm_property_create_range(dev, 0, "flicker reduction", 0, 100); | |
1855 | if (!dev->mode_config.tv_flicker_reduction_property) | |
1856 | goto nomem; | |
1857 | ||
1858 | dev->mode_config.tv_overscan_property = | |
1859 | drm_property_create_range(dev, 0, "overscan", 0, 100); | |
1860 | if (!dev->mode_config.tv_overscan_property) | |
1861 | goto nomem; | |
1862 | ||
1863 | dev->mode_config.tv_saturation_property = | |
1864 | drm_property_create_range(dev, 0, "saturation", 0, 100); | |
1865 | if (!dev->mode_config.tv_saturation_property) | |
1866 | goto nomem; | |
1867 | ||
1868 | dev->mode_config.tv_hue_property = | |
1869 | drm_property_create_range(dev, 0, "hue", 0, 100); | |
1870 | if (!dev->mode_config.tv_hue_property) | |
1871 | goto nomem; | |
1872 | ||
1873 | return 0; | |
1874 | nomem: | |
1875 | return -ENOMEM; | |
1876 | } | |
80ed86d4 | 1877 | EXPORT_SYMBOL(drm_mode_create_tv_properties_legacy); |
52217195 | 1878 | |
7d63cd85 MR |
1879 | /** |
1880 | * drm_mode_create_tv_properties - create TV specific connector properties | |
1881 | * @dev: DRM device | |
1882 | * @supported_tv_modes: Bitmask of TV modes supported (See DRM_MODE_TV_MODE_*) | |
04ee2767 | 1883 | * |
7d63cd85 MR |
1884 | * Called by a driver's TV initialization routine, this function creates |
1885 | * the TV specific connector properties for a given device. | |
1886 | * | |
1887 | * Returns: | |
1888 | * 0 on success or a negative error code on failure. | |
1889 | */ | |
1890 | int drm_mode_create_tv_properties(struct drm_device *dev, | |
1891 | unsigned int supported_tv_modes) | |
1892 | { | |
1893 | struct drm_prop_enum_list tv_mode_list[DRM_MODE_TV_MODE_MAX]; | |
1894 | struct drm_property *tv_mode; | |
1895 | unsigned int i, len = 0; | |
1896 | ||
1897 | if (dev->mode_config.tv_mode_property) | |
1898 | return 0; | |
1899 | ||
1900 | for (i = 0; i < DRM_MODE_TV_MODE_MAX; i++) { | |
1901 | if (!(supported_tv_modes & BIT(i))) | |
1902 | continue; | |
1903 | ||
1904 | tv_mode_list[len].type = i; | |
1905 | tv_mode_list[len].name = drm_get_tv_mode_name(i); | |
1906 | len++; | |
1907 | } | |
1908 | ||
1909 | tv_mode = drm_property_create_enum(dev, 0, "TV mode", | |
1910 | tv_mode_list, len); | |
1911 | if (!tv_mode) | |
1912 | return -ENOMEM; | |
1913 | ||
1914 | dev->mode_config.tv_mode_property = tv_mode; | |
1915 | ||
1916 | return drm_mode_create_tv_properties_legacy(dev, 0, NULL); | |
1917 | } | |
1918 | EXPORT_SYMBOL(drm_mode_create_tv_properties); | |
1919 | ||
52217195 DV |
1920 | /** |
1921 | * drm_mode_create_scaling_mode_property - create scaling mode property | |
1922 | * @dev: DRM device | |
1923 | * | |
1924 | * Called by a driver the first time it's needed, must be attached to desired | |
1925 | * connectors. | |
8f6e1e22 ML |
1926 | * |
1927 | * Atomic drivers should use drm_connector_attach_scaling_mode_property() | |
9c2fce13 | 1928 | * instead to correctly assign &drm_connector_state.scaling_mode |
8f6e1e22 | 1929 | * in the atomic state. |
f85d9e59 RD |
1930 | * |
1931 | * Returns: %0 | |
52217195 DV |
1932 | */ |
1933 | int drm_mode_create_scaling_mode_property(struct drm_device *dev) | |
1934 | { | |
1935 | struct drm_property *scaling_mode; | |
1936 | ||
1937 | if (dev->mode_config.scaling_mode_property) | |
1938 | return 0; | |
1939 | ||
1940 | scaling_mode = | |
1941 | drm_property_create_enum(dev, 0, "scaling mode", | |
1942 | drm_scaling_mode_enum_list, | |
1943 | ARRAY_SIZE(drm_scaling_mode_enum_list)); | |
1944 | ||
1945 | dev->mode_config.scaling_mode_property = scaling_mode; | |
1946 | ||
1947 | return 0; | |
1948 | } | |
1949 | EXPORT_SYMBOL(drm_mode_create_scaling_mode_property); | |
1950 | ||
ab7a664f NK |
1951 | /** |
1952 | * DOC: Variable refresh properties | |
1953 | * | |
1954 | * Variable refresh rate capable displays can dynamically adjust their | |
1955 | * refresh rate by extending the duration of their vertical front porch | |
1956 | * until page flip or timeout occurs. This can reduce or remove stuttering | |
1957 | * and latency in scenarios where the page flip does not align with the | |
1958 | * vblank interval. | |
1959 | * | |
1960 | * An example scenario would be an application flipping at a constant rate | |
1961 | * of 48Hz on a 60Hz display. The page flip will frequently miss the vblank | |
1962 | * interval and the same contents will be displayed twice. This can be | |
1963 | * observed as stuttering for content with motion. | |
1964 | * | |
1965 | * If variable refresh rate was active on a display that supported a | |
1966 | * variable refresh range from 35Hz to 60Hz no stuttering would be observable | |
1967 | * for the example scenario. The minimum supported variable refresh rate of | |
1968 | * 35Hz is below the page flip frequency and the vertical front porch can | |
1969 | * be extended until the page flip occurs. The vblank interval will be | |
1970 | * directly aligned to the page flip rate. | |
1971 | * | |
1972 | * Not all userspace content is suitable for use with variable refresh rate. | |
1973 | * Large and frequent changes in vertical front porch duration may worsen | |
1974 | * perceived stuttering for input sensitive applications. | |
1975 | * | |
1976 | * Panel brightness will also vary with vertical front porch duration. Some | |
1977 | * panels may have noticeable differences in brightness between the minimum | |
1978 | * vertical front porch duration and the maximum vertical front porch duration. | |
1979 | * Large and frequent changes in vertical front porch duration may produce | |
1980 | * observable flickering for such panels. | |
1981 | * | |
1982 | * Userspace control for variable refresh rate is supported via properties | |
1983 | * on the &drm_connector and &drm_crtc objects. | |
1984 | * | |
1985 | * "vrr_capable": | |
1986 | * Optional &drm_connector boolean property that drivers should attach | |
1987 | * with drm_connector_attach_vrr_capable_property() on connectors that | |
1988 | * could support variable refresh rates. Drivers should update the | |
1989 | * property value by calling drm_connector_set_vrr_capable_property(). | |
1990 | * | |
1991 | * Absence of the property should indicate absence of support. | |
1992 | * | |
77086014 | 1993 | * "VRR_ENABLED": |
ab7a664f NK |
1994 | * Default &drm_crtc boolean property that notifies the driver that the |
1995 | * content on the CRTC is suitable for variable refresh rate presentation. | |
1996 | * The driver will take this property as a hint to enable variable | |
1997 | * refresh rate support if the receiver supports it, ie. if the | |
1998 | * "vrr_capable" property is true on the &drm_connector object. The | |
1999 | * vertical front porch duration will be extended until page-flip or | |
2000 | * timeout when enabled. | |
2001 | * | |
2002 | * The minimum vertical front porch duration is defined as the vertical | |
2003 | * front porch duration for the current mode. | |
2004 | * | |
2005 | * The maximum vertical front porch duration is greater than or equal to | |
2006 | * the minimum vertical front porch duration. The duration is derived | |
2007 | * from the minimum supported variable refresh rate for the connector. | |
2008 | * | |
2009 | * The driver may place further restrictions within these minimum | |
2010 | * and maximum bounds. | |
ab7a664f NK |
2011 | */ |
2012 | ||
ba1b0f6c NK |
2013 | /** |
2014 | * drm_connector_attach_vrr_capable_property - creates the | |
2015 | * vrr_capable property | |
2016 | * @connector: connector to create the vrr_capable property on. | |
2017 | * | |
2018 | * This is used by atomic drivers to add support for querying | |
2019 | * variable refresh rate capability for a connector. | |
2020 | * | |
2021 | * Returns: | |
84e543bc | 2022 | * Zero on success, negative errno on failure. |
ba1b0f6c NK |
2023 | */ |
2024 | int drm_connector_attach_vrr_capable_property( | |
2025 | struct drm_connector *connector) | |
2026 | { | |
2027 | struct drm_device *dev = connector->dev; | |
2028 | struct drm_property *prop; | |
2029 | ||
2030 | if (!connector->vrr_capable_property) { | |
2031 | prop = drm_property_create_bool(dev, DRM_MODE_PROP_IMMUTABLE, | |
2032 | "vrr_capable"); | |
2033 | if (!prop) | |
2034 | return -ENOMEM; | |
2035 | ||
2036 | connector->vrr_capable_property = prop; | |
2037 | drm_object_attach_property(&connector->base, prop, 0); | |
2038 | } | |
2039 | ||
2040 | return 0; | |
2041 | } | |
2042 | EXPORT_SYMBOL(drm_connector_attach_vrr_capable_property); | |
2043 | ||
8f6e1e22 ML |
2044 | /** |
2045 | * drm_connector_attach_scaling_mode_property - attach atomic scaling mode property | |
2046 | * @connector: connector to attach scaling mode property on. | |
2047 | * @scaling_mode_mask: or'ed mask of BIT(%DRM_MODE_SCALE_\*). | |
2048 | * | |
2049 | * This is used to add support for scaling mode to atomic drivers. | |
9c2fce13 | 2050 | * The scaling mode will be set to &drm_connector_state.scaling_mode |
8f6e1e22 ML |
2051 | * and can be used from &drm_connector_helper_funcs->atomic_check for validation. |
2052 | * | |
2053 | * This is the atomic version of drm_mode_create_scaling_mode_property(). | |
2054 | * | |
2055 | * Returns: | |
2056 | * Zero on success, negative errno on failure. | |
2057 | */ | |
2058 | int drm_connector_attach_scaling_mode_property(struct drm_connector *connector, | |
2059 | u32 scaling_mode_mask) | |
2060 | { | |
2061 | struct drm_device *dev = connector->dev; | |
2062 | struct drm_property *scaling_mode_property; | |
30e9db6d | 2063 | int i; |
8f6e1e22 ML |
2064 | const unsigned valid_scaling_mode_mask = |
2065 | (1U << ARRAY_SIZE(drm_scaling_mode_enum_list)) - 1; | |
2066 | ||
2067 | if (WARN_ON(hweight32(scaling_mode_mask) < 2 || | |
2068 | scaling_mode_mask & ~valid_scaling_mode_mask)) | |
2069 | return -EINVAL; | |
2070 | ||
2071 | scaling_mode_property = | |
2072 | drm_property_create(dev, DRM_MODE_PROP_ENUM, "scaling mode", | |
2073 | hweight32(scaling_mode_mask)); | |
2074 | ||
2075 | if (!scaling_mode_property) | |
2076 | return -ENOMEM; | |
2077 | ||
2078 | for (i = 0; i < ARRAY_SIZE(drm_scaling_mode_enum_list); i++) { | |
2079 | int ret; | |
2080 | ||
2081 | if (!(BIT(i) & scaling_mode_mask)) | |
2082 | continue; | |
2083 | ||
30e9db6d | 2084 | ret = drm_property_add_enum(scaling_mode_property, |
8f6e1e22 ML |
2085 | drm_scaling_mode_enum_list[i].type, |
2086 | drm_scaling_mode_enum_list[i].name); | |
2087 | ||
2088 | if (ret) { | |
2089 | drm_property_destroy(dev, scaling_mode_property); | |
2090 | ||
2091 | return ret; | |
2092 | } | |
2093 | } | |
2094 | ||
2095 | drm_object_attach_property(&connector->base, | |
2096 | scaling_mode_property, 0); | |
2097 | ||
2098 | connector->scaling_mode_property = scaling_mode_property; | |
2099 | ||
2100 | return 0; | |
2101 | } | |
2102 | EXPORT_SYMBOL(drm_connector_attach_scaling_mode_property); | |
2103 | ||
52217195 DV |
2104 | /** |
2105 | * drm_mode_create_aspect_ratio_property - create aspect ratio property | |
2106 | * @dev: DRM device | |
2107 | * | |
2108 | * Called by a driver the first time it's needed, must be attached to desired | |
2109 | * connectors. | |
2110 | * | |
2111 | * Returns: | |
2112 | * Zero on success, negative errno on failure. | |
2113 | */ | |
2114 | int drm_mode_create_aspect_ratio_property(struct drm_device *dev) | |
2115 | { | |
2116 | if (dev->mode_config.aspect_ratio_property) | |
2117 | return 0; | |
2118 | ||
2119 | dev->mode_config.aspect_ratio_property = | |
2120 | drm_property_create_enum(dev, 0, "aspect ratio", | |
2121 | drm_aspect_ratio_enum_list, | |
2122 | ARRAY_SIZE(drm_aspect_ratio_enum_list)); | |
2123 | ||
2124 | if (dev->mode_config.aspect_ratio_property == NULL) | |
2125 | return -ENOMEM; | |
2126 | ||
2127 | return 0; | |
2128 | } | |
2129 | EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property); | |
2130 | ||
d2c6a405 US |
2131 | /** |
2132 | * DOC: standard connector properties | |
2133 | * | |
2134 | * Colorspace: | |
d2c6a405 US |
2135 | * This property helps select a suitable colorspace based on the sink |
2136 | * capability. Modern sink devices support wider gamut like BT2020. | |
2137 | * This helps switch to BT2020 mode if the BT2020 encoded video stream | |
2138 | * is being played by the user, same for any other colorspace. Thereby | |
2139 | * giving a good visual experience to users. | |
2140 | * | |
2141 | * The expectation from userspace is that it should parse the EDID | |
2142 | * and get supported colorspaces. Use this property and switch to the | |
2143 | * one supported. Sink supported colorspaces should be retrieved by | |
2144 | * userspace from EDID and driver will not explicitly expose them. | |
2145 | * | |
2146 | * Basically the expectation from userspace is: | |
2147 | * - Set up CRTC DEGAMMA/CTM/GAMMA to convert to some sink | |
2148 | * colorspace | |
2149 | * - Set this new property to let the sink know what it | |
2150 | * converted the CRTC output to. | |
2151 | * - This property is just to inform sink what colorspace | |
2152 | * source is trying to drive. | |
2153 | * | |
8806cd3a | 2154 | * Because between HDMI and DP have different colorspaces, |
45cf0e91 GM |
2155 | * drm_mode_create_hdmi_colorspace_property() is used for HDMI connector and |
2156 | * drm_mode_create_dp_colorspace_property() is used for DP connector. | |
8806cd3a GM |
2157 | */ |
2158 | ||
6120611a | 2159 | static int drm_mode_create_colorspace_property(struct drm_connector *connector, |
c627087c | 2160 | u32 supported_colorspaces) |
d2c6a405 US |
2161 | { |
2162 | struct drm_device *dev = connector->dev; | |
c627087c HW |
2163 | u32 colorspaces = supported_colorspaces | BIT(DRM_MODE_COLORIMETRY_DEFAULT); |
2164 | struct drm_prop_enum_list enum_list[DRM_MODE_COLORIMETRY_COUNT]; | |
2165 | int i, len; | |
d2c6a405 | 2166 | |
8806cd3a | 2167 | if (connector->colorspace_property) |
d2c6a405 | 2168 | return 0; |
d2c6a405 | 2169 | |
c627087c HW |
2170 | if (!supported_colorspaces) { |
2171 | drm_err(dev, "No supported colorspaces provded on [CONNECTOR:%d:%s]\n", | |
2172 | connector->base.id, connector->name); | |
2173 | return -EINVAL; | |
2174 | } | |
2175 | ||
2176 | if ((supported_colorspaces & -BIT(DRM_MODE_COLORIMETRY_COUNT)) != 0) { | |
2177 | drm_err(dev, "Unknown colorspace provded on [CONNECTOR:%d:%s]\n", | |
2178 | connector->base.id, connector->name); | |
2179 | return -EINVAL; | |
2180 | } | |
2181 | ||
2182 | len = 0; | |
2183 | for (i = 0; i < DRM_MODE_COLORIMETRY_COUNT; i++) { | |
2184 | if ((colorspaces & BIT(i)) == 0) | |
2185 | continue; | |
2186 | ||
2187 | enum_list[len].type = i; | |
2188 | enum_list[len].name = colorspace_names[i]; | |
2189 | len++; | |
2190 | } | |
6120611a | 2191 | |
8806cd3a GM |
2192 | connector->colorspace_property = |
2193 | drm_property_create_enum(dev, DRM_MODE_PROP_ENUM, "Colorspace", | |
c627087c HW |
2194 | enum_list, |
2195 | len); | |
8806cd3a GM |
2196 | |
2197 | if (!connector->colorspace_property) | |
2198 | return -ENOMEM; | |
d2c6a405 US |
2199 | |
2200 | return 0; | |
2201 | } | |
c627087c | 2202 | |
6120611a HW |
2203 | /** |
2204 | * drm_mode_create_hdmi_colorspace_property - create hdmi colorspace property | |
2205 | * @connector: connector to create the Colorspace property on. | |
0c3b063e | 2206 | * @supported_colorspaces: bitmap of supported color spaces |
6120611a HW |
2207 | * |
2208 | * Called by a driver the first time it's needed, must be attached to desired | |
2209 | * HDMI connectors. | |
2210 | * | |
2211 | * Returns: | |
2212 | * Zero on success, negative errno on failure. | |
2213 | */ | |
c265f340 HW |
2214 | int drm_mode_create_hdmi_colorspace_property(struct drm_connector *connector, |
2215 | u32 supported_colorspaces) | |
6120611a | 2216 | { |
c265f340 HW |
2217 | u32 colorspaces; |
2218 | ||
2219 | if (supported_colorspaces) | |
2220 | colorspaces = supported_colorspaces & hdmi_colorspaces; | |
2221 | else | |
2222 | colorspaces = hdmi_colorspaces; | |
2223 | ||
2224 | return drm_mode_create_colorspace_property(connector, colorspaces); | |
6120611a | 2225 | } |
8806cd3a | 2226 | EXPORT_SYMBOL(drm_mode_create_hdmi_colorspace_property); |
d2c6a405 | 2227 | |
45cf0e91 GM |
2228 | /** |
2229 | * drm_mode_create_dp_colorspace_property - create dp colorspace property | |
2230 | * @connector: connector to create the Colorspace property on. | |
0c3b063e | 2231 | * @supported_colorspaces: bitmap of supported color spaces |
45cf0e91 GM |
2232 | * |
2233 | * Called by a driver the first time it's needed, must be attached to desired | |
2234 | * DP connectors. | |
2235 | * | |
2236 | * Returns: | |
84e543bc | 2237 | * Zero on success, negative errno on failure. |
45cf0e91 | 2238 | */ |
c265f340 HW |
2239 | int drm_mode_create_dp_colorspace_property(struct drm_connector *connector, |
2240 | u32 supported_colorspaces) | |
45cf0e91 | 2241 | { |
c265f340 HW |
2242 | u32 colorspaces; |
2243 | ||
2244 | if (supported_colorspaces) | |
2245 | colorspaces = supported_colorspaces & dp_colorspaces; | |
2246 | else | |
2247 | colorspaces = dp_colorspaces; | |
2248 | ||
2249 | return drm_mode_create_colorspace_property(connector, colorspaces); | |
d2c6a405 | 2250 | } |
45cf0e91 | 2251 | EXPORT_SYMBOL(drm_mode_create_dp_colorspace_property); |
d2c6a405 | 2252 | |
50525c33 SL |
2253 | /** |
2254 | * drm_mode_create_content_type_property - create content type property | |
2255 | * @dev: DRM device | |
2256 | * | |
2257 | * Called by a driver the first time it's needed, must be attached to desired | |
2258 | * connectors. | |
2259 | * | |
2260 | * Returns: | |
2261 | * Zero on success, negative errno on failure. | |
2262 | */ | |
2263 | int drm_mode_create_content_type_property(struct drm_device *dev) | |
2264 | { | |
2265 | if (dev->mode_config.content_type_property) | |
2266 | return 0; | |
2267 | ||
2268 | dev->mode_config.content_type_property = | |
2269 | drm_property_create_enum(dev, 0, "content type", | |
2270 | drm_content_type_enum_list, | |
2271 | ARRAY_SIZE(drm_content_type_enum_list)); | |
2272 | ||
2273 | if (dev->mode_config.content_type_property == NULL) | |
2274 | return -ENOMEM; | |
2275 | ||
2276 | return 0; | |
2277 | } | |
2278 | EXPORT_SYMBOL(drm_mode_create_content_type_property); | |
2279 | ||
52217195 DV |
2280 | /** |
2281 | * drm_mode_create_suggested_offset_properties - create suggests offset properties | |
2282 | * @dev: DRM device | |
2283 | * | |
84e543bc | 2284 | * Create the suggested x/y offset property for connectors. |
f85d9e59 RD |
2285 | * |
2286 | * Returns: | |
2287 | * 0 on success or a negative error code on failure. | |
52217195 DV |
2288 | */ |
2289 | int drm_mode_create_suggested_offset_properties(struct drm_device *dev) | |
2290 | { | |
2291 | if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property) | |
2292 | return 0; | |
2293 | ||
2294 | dev->mode_config.suggested_x_property = | |
2295 | drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff); | |
2296 | ||
2297 | dev->mode_config.suggested_y_property = | |
2298 | drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff); | |
2299 | ||
2300 | if (dev->mode_config.suggested_x_property == NULL || | |
2301 | dev->mode_config.suggested_y_property == NULL) | |
2302 | return -ENOMEM; | |
2303 | return 0; | |
2304 | } | |
2305 | EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties); | |
2306 | ||
2307 | /** | |
97e14fbe | 2308 | * drm_connector_set_path_property - set tile property on connector |
52217195 DV |
2309 | * @connector: connector to set property on. |
2310 | * @path: path to use for property; must not be NULL. | |
2311 | * | |
2312 | * This creates a property to expose to userspace to specify a | |
2313 | * connector path. This is mainly used for DisplayPort MST where | |
2314 | * connectors have a topology and we want to allow userspace to give | |
2315 | * them more meaningful names. | |
2316 | * | |
2317 | * Returns: | |
2318 | * Zero on success, negative errno on failure. | |
2319 | */ | |
97e14fbe DV |
2320 | int drm_connector_set_path_property(struct drm_connector *connector, |
2321 | const char *path) | |
52217195 DV |
2322 | { |
2323 | struct drm_device *dev = connector->dev; | |
2324 | int ret; | |
2325 | ||
2326 | ret = drm_property_replace_global_blob(dev, | |
c83b5eef BMC |
2327 | &connector->path_blob_ptr, |
2328 | strlen(path) + 1, | |
2329 | path, | |
2330 | &connector->base, | |
2331 | dev->mode_config.path_property); | |
52217195 DV |
2332 | return ret; |
2333 | } | |
97e14fbe | 2334 | EXPORT_SYMBOL(drm_connector_set_path_property); |
52217195 DV |
2335 | |
2336 | /** | |
97e14fbe | 2337 | * drm_connector_set_tile_property - set tile property on connector |
52217195 DV |
2338 | * @connector: connector to set property on. |
2339 | * | |
2340 | * This looks up the tile information for a connector, and creates a | |
2341 | * property for userspace to parse if it exists. The property is of | |
2342 | * the form of 8 integers using ':' as a separator. | |
2de3a078 MN |
2343 | * This is used for dual port tiled displays with DisplayPort SST |
2344 | * or DisplayPort MST connectors. | |
52217195 DV |
2345 | * |
2346 | * Returns: | |
2347 | * Zero on success, errno on failure. | |
2348 | */ | |
97e14fbe | 2349 | int drm_connector_set_tile_property(struct drm_connector *connector) |
52217195 DV |
2350 | { |
2351 | struct drm_device *dev = connector->dev; | |
2352 | char tile[256]; | |
2353 | int ret; | |
2354 | ||
2355 | if (!connector->has_tile) { | |
2356 | ret = drm_property_replace_global_blob(dev, | |
c83b5eef BMC |
2357 | &connector->tile_blob_ptr, |
2358 | 0, | |
2359 | NULL, | |
2360 | &connector->base, | |
2361 | dev->mode_config.tile_property); | |
52217195 DV |
2362 | return ret; |
2363 | } | |
2364 | ||
2365 | snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d", | |
2366 | connector->tile_group->id, connector->tile_is_single_monitor, | |
2367 | connector->num_h_tile, connector->num_v_tile, | |
2368 | connector->tile_h_loc, connector->tile_v_loc, | |
2369 | connector->tile_h_size, connector->tile_v_size); | |
2370 | ||
2371 | ret = drm_property_replace_global_blob(dev, | |
c83b5eef BMC |
2372 | &connector->tile_blob_ptr, |
2373 | strlen(tile) + 1, | |
2374 | tile, | |
2375 | &connector->base, | |
2376 | dev->mode_config.tile_property); | |
52217195 DV |
2377 | return ret; |
2378 | } | |
97e14fbe | 2379 | EXPORT_SYMBOL(drm_connector_set_tile_property); |
52217195 | 2380 | |
40ee6fbe | 2381 | /** |
97e14fbe | 2382 | * drm_connector_set_link_status_property - Set link status property of a connector |
40ee6fbe MN |
2383 | * @connector: drm connector |
2384 | * @link_status: new value of link status property (0: Good, 1: Bad) | |
2385 | * | |
2386 | * In usual working scenario, this link status property will always be set to | |
2387 | * "GOOD". If something fails during or after a mode set, the kernel driver | |
2388 | * may set this link status property to "BAD". The caller then needs to send a | |
2389 | * hotplug uevent for userspace to re-check the valid modes through | |
2390 | * GET_CONNECTOR_IOCTL and retry modeset. | |
2391 | * | |
2392 | * Note: Drivers cannot rely on userspace to support this property and | |
2393 | * issue a modeset. As such, they may choose to handle issues (like | |
2394 | * re-training a link) without userspace's intervention. | |
2395 | * | |
2396 | * The reason for adding this property is to handle link training failures, but | |
2397 | * it is not limited to DP or link training. For example, if we implement | |
2398 | * asynchronous setcrtc, this property can be used to report any failures in that. | |
2399 | */ | |
97e14fbe DV |
2400 | void drm_connector_set_link_status_property(struct drm_connector *connector, |
2401 | uint64_t link_status) | |
40ee6fbe MN |
2402 | { |
2403 | struct drm_device *dev = connector->dev; | |
2404 | ||
2405 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); | |
2406 | connector->state->link_status = link_status; | |
2407 | drm_modeset_unlock(&dev->mode_config.connection_mutex); | |
2408 | } | |
97e14fbe | 2409 | EXPORT_SYMBOL(drm_connector_set_link_status_property); |
40ee6fbe | 2410 | |
47e22ff1 RS |
2411 | /** |
2412 | * drm_connector_attach_max_bpc_property - attach "max bpc" property | |
2413 | * @connector: connector to attach max bpc property on. | |
2414 | * @min: The minimum bit depth supported by the connector. | |
2415 | * @max: The maximum bit depth supported by the connector. | |
2416 | * | |
2417 | * This is used to add support for limiting the bit depth on a connector. | |
2418 | * | |
2419 | * Returns: | |
2420 | * Zero on success, negative errno on failure. | |
2421 | */ | |
2422 | int drm_connector_attach_max_bpc_property(struct drm_connector *connector, | |
2423 | int min, int max) | |
2424 | { | |
2425 | struct drm_device *dev = connector->dev; | |
2426 | struct drm_property *prop; | |
2427 | ||
2428 | prop = connector->max_bpc_property; | |
2429 | if (!prop) { | |
2430 | prop = drm_property_create_range(dev, 0, "max bpc", min, max); | |
2431 | if (!prop) | |
2432 | return -ENOMEM; | |
2433 | ||
2434 | connector->max_bpc_property = prop; | |
2435 | } | |
2436 | ||
2437 | drm_object_attach_property(&connector->base, prop, max); | |
2438 | connector->state->max_requested_bpc = max; | |
2439 | connector->state->max_bpc = max; | |
2440 | ||
2441 | return 0; | |
2442 | } | |
2443 | EXPORT_SYMBOL(drm_connector_attach_max_bpc_property); | |
2444 | ||
e057b52c MR |
2445 | /** |
2446 | * drm_connector_attach_hdr_output_metadata_property - attach "HDR_OUTPUT_METADA" property | |
2447 | * @connector: connector to attach the property on. | |
2448 | * | |
2449 | * This is used to allow the userspace to send HDR Metadata to the | |
2450 | * driver. | |
2451 | * | |
2452 | * Returns: | |
2453 | * Zero on success, negative errno on failure. | |
2454 | */ | |
2455 | int drm_connector_attach_hdr_output_metadata_property(struct drm_connector *connector) | |
2456 | { | |
2457 | struct drm_device *dev = connector->dev; | |
2458 | struct drm_property *prop = dev->mode_config.hdr_output_metadata_property; | |
2459 | ||
2460 | drm_object_attach_property(&connector->base, prop, 0); | |
2461 | ||
2462 | return 0; | |
2463 | } | |
2464 | EXPORT_SYMBOL(drm_connector_attach_hdr_output_metadata_property); | |
2465 | ||
21f79128 MR |
2466 | /** |
2467 | * drm_connector_attach_colorspace_property - attach "Colorspace" property | |
2468 | * @connector: connector to attach the property on. | |
2469 | * | |
2470 | * This is used to allow the userspace to signal the output colorspace | |
2471 | * to the driver. | |
2472 | * | |
2473 | * Returns: | |
2474 | * Zero on success, negative errno on failure. | |
2475 | */ | |
2476 | int drm_connector_attach_colorspace_property(struct drm_connector *connector) | |
2477 | { | |
2478 | struct drm_property *prop = connector->colorspace_property; | |
2479 | ||
2480 | drm_object_attach_property(&connector->base, prop, DRM_MODE_COLORIMETRY_DEFAULT); | |
2481 | ||
2482 | return 0; | |
2483 | } | |
2484 | EXPORT_SYMBOL(drm_connector_attach_colorspace_property); | |
2485 | ||
72921cdf MR |
2486 | /** |
2487 | * drm_connector_atomic_hdr_metadata_equal - checks if the hdr metadata changed | |
2488 | * @old_state: old connector state to compare | |
2489 | * @new_state: new connector state to compare | |
2490 | * | |
2491 | * This is used by HDR-enabled drivers to test whether the HDR metadata | |
2492 | * have changed between two different connector state (and thus probably | |
2493 | * requires a full blown mode change). | |
2494 | * | |
2495 | * Returns: | |
2496 | * True if the metadata are equal, False otherwise | |
2497 | */ | |
2498 | bool drm_connector_atomic_hdr_metadata_equal(struct drm_connector_state *old_state, | |
2499 | struct drm_connector_state *new_state) | |
2500 | { | |
2501 | struct drm_property_blob *old_blob = old_state->hdr_output_metadata; | |
2502 | struct drm_property_blob *new_blob = new_state->hdr_output_metadata; | |
2503 | ||
2504 | if (!old_blob || !new_blob) | |
2505 | return old_blob == new_blob; | |
2506 | ||
2507 | if (old_blob->length != new_blob->length) | |
2508 | return false; | |
2509 | ||
2510 | return !memcmp(old_blob->data, new_blob->data, old_blob->length); | |
2511 | } | |
2512 | EXPORT_SYMBOL(drm_connector_atomic_hdr_metadata_equal); | |
2513 | ||
ba1b0f6c NK |
2514 | /** |
2515 | * drm_connector_set_vrr_capable_property - sets the variable refresh rate | |
2516 | * capable property for a connector | |
2517 | * @connector: drm connector | |
2518 | * @capable: True if the connector is variable refresh rate capable | |
2519 | * | |
2520 | * Should be used by atomic drivers to update the indicated support for | |
2521 | * variable refresh rate over a connector. | |
2522 | */ | |
2523 | void drm_connector_set_vrr_capable_property( | |
2524 | struct drm_connector *connector, bool capable) | |
2525 | { | |
62929726 MN |
2526 | if (!connector->vrr_capable_property) |
2527 | return; | |
2528 | ||
ba1b0f6c NK |
2529 | drm_object_property_set_value(&connector->base, |
2530 | connector->vrr_capable_property, | |
2531 | capable); | |
2532 | } | |
2533 | EXPORT_SYMBOL(drm_connector_set_vrr_capable_property); | |
2534 | ||
8d70f395 | 2535 | /** |
84e543bc | 2536 | * drm_connector_set_panel_orientation - sets the connector's panel_orientation |
69654c63 DB |
2537 | * @connector: connector for which to set the panel-orientation property. |
2538 | * @panel_orientation: drm_panel_orientation value to set | |
2539 | * | |
2540 | * This function sets the connector's panel_orientation and attaches | |
2541 | * a "panel orientation" property to the connector. | |
8d70f395 | 2542 | * |
69654c63 DB |
2543 | * Calling this function on a connector where the panel_orientation has |
2544 | * already been set is a no-op (e.g. the orientation has been overridden with | |
2545 | * a kernel commandline option). | |
8d70f395 | 2546 | * |
69654c63 DB |
2547 | * It is allowed to call this function with a panel_orientation of |
2548 | * DRM_MODE_PANEL_ORIENTATION_UNKNOWN, in which case it is a no-op. | |
8d70f395 | 2549 | * |
5e41b01a HYW |
2550 | * The function shouldn't be called in panel after drm is registered (i.e. |
2551 | * drm_dev_register() is called in drm). | |
2552 | * | |
8d70f395 HG |
2553 | * Returns: |
2554 | * Zero on success, negative errno on failure. | |
2555 | */ | |
69654c63 DB |
2556 | int drm_connector_set_panel_orientation( |
2557 | struct drm_connector *connector, | |
2558 | enum drm_panel_orientation panel_orientation) | |
8d70f395 HG |
2559 | { |
2560 | struct drm_device *dev = connector->dev; | |
2561 | struct drm_display_info *info = &connector->display_info; | |
2562 | struct drm_property *prop; | |
8d70f395 | 2563 | |
69654c63 DB |
2564 | /* Already set? */ |
2565 | if (info->panel_orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN) | |
2566 | return 0; | |
8d70f395 | 2567 | |
69654c63 DB |
2568 | /* Don't attach the property if the orientation is unknown */ |
2569 | if (panel_orientation == DRM_MODE_PANEL_ORIENTATION_UNKNOWN) | |
8d70f395 HG |
2570 | return 0; |
2571 | ||
69654c63 DB |
2572 | info->panel_orientation = panel_orientation; |
2573 | ||
8d70f395 HG |
2574 | prop = dev->mode_config.panel_orientation_property; |
2575 | if (!prop) { | |
2576 | prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, | |
2577 | "panel orientation", | |
2578 | drm_panel_orientation_enum_list, | |
2579 | ARRAY_SIZE(drm_panel_orientation_enum_list)); | |
2580 | if (!prop) | |
2581 | return -ENOMEM; | |
2582 | ||
2583 | dev->mode_config.panel_orientation_property = prop; | |
2584 | } | |
2585 | ||
2586 | drm_object_attach_property(&connector->base, prop, | |
2587 | info->panel_orientation); | |
2588 | return 0; | |
2589 | } | |
69654c63 DB |
2590 | EXPORT_SYMBOL(drm_connector_set_panel_orientation); |
2591 | ||
2592 | /** | |
f85d9e59 RD |
2593 | * drm_connector_set_panel_orientation_with_quirk - set the |
2594 | * connector's panel_orientation after checking for quirks | |
69654c63 DB |
2595 | * @connector: connector for which to init the panel-orientation property. |
2596 | * @panel_orientation: drm_panel_orientation value to set | |
2597 | * @width: width in pixels of the panel, used for panel quirk detection | |
2598 | * @height: height in pixels of the panel, used for panel quirk detection | |
2599 | * | |
2600 | * Like drm_connector_set_panel_orientation(), but with a check for platform | |
2601 | * specific (e.g. DMI based) quirks overriding the passed in panel_orientation. | |
2602 | * | |
2603 | * Returns: | |
2604 | * Zero on success, negative errno on failure. | |
2605 | */ | |
2606 | int drm_connector_set_panel_orientation_with_quirk( | |
2607 | struct drm_connector *connector, | |
2608 | enum drm_panel_orientation panel_orientation, | |
2609 | int width, int height) | |
2610 | { | |
2611 | int orientation_quirk; | |
2612 | ||
2613 | orientation_quirk = drm_get_panel_orientation_quirk(width, height); | |
2614 | if (orientation_quirk != DRM_MODE_PANEL_ORIENTATION_UNKNOWN) | |
2615 | panel_orientation = orientation_quirk; | |
2616 | ||
2617 | return drm_connector_set_panel_orientation(connector, | |
2618 | panel_orientation); | |
2619 | } | |
2620 | EXPORT_SYMBOL(drm_connector_set_panel_orientation_with_quirk); | |
8d70f395 | 2621 | |
5e41b01a HYW |
2622 | /** |
2623 | * drm_connector_set_orientation_from_panel - | |
2624 | * set the connector's panel_orientation from panel's callback. | |
2625 | * @connector: connector for which to init the panel-orientation property. | |
2626 | * @panel: panel that can provide orientation information. | |
2627 | * | |
2628 | * Drm drivers should call this function before drm_dev_register(). | |
2629 | * Orientation is obtained from panel's .get_orientation() callback. | |
2630 | * | |
2631 | * Returns: | |
2632 | * Zero on success, negative errno on failure. | |
2633 | */ | |
2634 | int drm_connector_set_orientation_from_panel( | |
2635 | struct drm_connector *connector, | |
2636 | struct drm_panel *panel) | |
2637 | { | |
2638 | enum drm_panel_orientation orientation; | |
2639 | ||
2640 | if (panel && panel->funcs && panel->funcs->get_orientation) | |
2641 | orientation = panel->funcs->get_orientation(panel); | |
2642 | else | |
2643 | orientation = DRM_MODE_PANEL_ORIENTATION_UNKNOWN; | |
2644 | ||
2645 | return drm_connector_set_panel_orientation(connector, orientation); | |
2646 | } | |
2647 | EXPORT_SYMBOL(drm_connector_set_orientation_from_panel); | |
2648 | ||
107fe904 RJ |
2649 | static const struct drm_prop_enum_list privacy_screen_enum[] = { |
2650 | { PRIVACY_SCREEN_DISABLED, "Disabled" }, | |
2651 | { PRIVACY_SCREEN_ENABLED, "Enabled" }, | |
2652 | { PRIVACY_SCREEN_DISABLED_LOCKED, "Disabled-locked" }, | |
2653 | { PRIVACY_SCREEN_ENABLED_LOCKED, "Enabled-locked" }, | |
2654 | }; | |
2655 | ||
2656 | /** | |
2657 | * drm_connector_create_privacy_screen_properties - create the drm connecter's | |
2658 | * privacy-screen properties. | |
2659 | * @connector: connector for which to create the privacy-screen properties | |
2660 | * | |
2661 | * This function creates the "privacy-screen sw-state" and "privacy-screen | |
2662 | * hw-state" properties for the connector. They are not attached. | |
2663 | */ | |
2664 | void | |
2665 | drm_connector_create_privacy_screen_properties(struct drm_connector *connector) | |
2666 | { | |
2667 | if (connector->privacy_screen_sw_state_property) | |
2668 | return; | |
2669 | ||
2670 | /* Note sw-state only supports the first 2 values of the enum */ | |
2671 | connector->privacy_screen_sw_state_property = | |
2672 | drm_property_create_enum(connector->dev, DRM_MODE_PROP_ENUM, | |
2673 | "privacy-screen sw-state", | |
2674 | privacy_screen_enum, 2); | |
2675 | ||
2676 | connector->privacy_screen_hw_state_property = | |
2677 | drm_property_create_enum(connector->dev, | |
2678 | DRM_MODE_PROP_IMMUTABLE | DRM_MODE_PROP_ENUM, | |
2679 | "privacy-screen hw-state", | |
2680 | privacy_screen_enum, | |
2681 | ARRAY_SIZE(privacy_screen_enum)); | |
2682 | } | |
2683 | EXPORT_SYMBOL(drm_connector_create_privacy_screen_properties); | |
2684 | ||
2685 | /** | |
2686 | * drm_connector_attach_privacy_screen_properties - attach the drm connecter's | |
2687 | * privacy-screen properties. | |
2688 | * @connector: connector on which to attach the privacy-screen properties | |
2689 | * | |
2690 | * This function attaches the "privacy-screen sw-state" and "privacy-screen | |
2691 | * hw-state" properties to the connector. The initial state of both is set | |
2692 | * to "Disabled". | |
2693 | */ | |
2694 | void | |
2695 | drm_connector_attach_privacy_screen_properties(struct drm_connector *connector) | |
2696 | { | |
2697 | if (!connector->privacy_screen_sw_state_property) | |
2698 | return; | |
2699 | ||
2700 | drm_object_attach_property(&connector->base, | |
2701 | connector->privacy_screen_sw_state_property, | |
2702 | PRIVACY_SCREEN_DISABLED); | |
2703 | ||
2704 | drm_object_attach_property(&connector->base, | |
2705 | connector->privacy_screen_hw_state_property, | |
2706 | PRIVACY_SCREEN_DISABLED); | |
2707 | } | |
2708 | EXPORT_SYMBOL(drm_connector_attach_privacy_screen_properties); | |
2709 | ||
334f74ee HG |
2710 | static void drm_connector_update_privacy_screen_properties( |
2711 | struct drm_connector *connector, bool set_sw_state) | |
2712 | { | |
2713 | enum drm_privacy_screen_status sw_state, hw_state; | |
2714 | ||
2715 | drm_privacy_screen_get_state(connector->privacy_screen, | |
2716 | &sw_state, &hw_state); | |
2717 | ||
2718 | if (set_sw_state) | |
2719 | connector->state->privacy_screen_sw_state = sw_state; | |
2720 | drm_object_property_set_value(&connector->base, | |
2721 | connector->privacy_screen_hw_state_property, hw_state); | |
2722 | } | |
2723 | ||
2724 | static int drm_connector_privacy_screen_notifier( | |
2725 | struct notifier_block *nb, unsigned long action, void *data) | |
2726 | { | |
2727 | struct drm_connector *connector = | |
2728 | container_of(nb, struct drm_connector, privacy_screen_notifier); | |
2729 | struct drm_device *dev = connector->dev; | |
2730 | ||
2731 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); | |
2732 | drm_connector_update_privacy_screen_properties(connector, true); | |
2733 | drm_modeset_unlock(&dev->mode_config.connection_mutex); | |
2734 | ||
0cf8d292 SS |
2735 | drm_sysfs_connector_property_event(connector, |
2736 | connector->privacy_screen_sw_state_property); | |
2737 | drm_sysfs_connector_property_event(connector, | |
2738 | connector->privacy_screen_hw_state_property); | |
334f74ee HG |
2739 | |
2740 | return NOTIFY_DONE; | |
2741 | } | |
2742 | ||
2743 | /** | |
2744 | * drm_connector_attach_privacy_screen_provider - attach a privacy-screen to | |
2745 | * the connector | |
2746 | * @connector: connector to attach the privacy-screen to | |
2747 | * @priv: drm_privacy_screen to attach | |
2748 | * | |
2749 | * Create and attach the standard privacy-screen properties and register | |
2750 | * a generic notifier for generating sysfs-connector-status-events | |
2751 | * on external changes to the privacy-screen status. | |
2752 | * This function takes ownership of the passed in drm_privacy_screen and will | |
2753 | * call drm_privacy_screen_put() on it when the connector is destroyed. | |
2754 | */ | |
2755 | void drm_connector_attach_privacy_screen_provider( | |
2756 | struct drm_connector *connector, struct drm_privacy_screen *priv) | |
2757 | { | |
2758 | connector->privacy_screen = priv; | |
2759 | connector->privacy_screen_notifier.notifier_call = | |
2760 | drm_connector_privacy_screen_notifier; | |
2761 | ||
2762 | drm_connector_create_privacy_screen_properties(connector); | |
2763 | drm_connector_update_privacy_screen_properties(connector, true); | |
2764 | drm_connector_attach_privacy_screen_properties(connector); | |
2765 | } | |
2766 | EXPORT_SYMBOL(drm_connector_attach_privacy_screen_provider); | |
2767 | ||
2768 | /** | |
2769 | * drm_connector_update_privacy_screen - update connector's privacy-screen sw-state | |
2770 | * @connector_state: connector-state to update the privacy-screen for | |
2771 | * | |
2772 | * This function calls drm_privacy_screen_set_sw_state() on the connector's | |
2773 | * privacy-screen. | |
2774 | * | |
2775 | * If the connector has no privacy-screen, then this is a no-op. | |
2776 | */ | |
2777 | void drm_connector_update_privacy_screen(const struct drm_connector_state *connector_state) | |
2778 | { | |
2779 | struct drm_connector *connector = connector_state->connector; | |
2780 | int ret; | |
2781 | ||
2782 | if (!connector->privacy_screen) | |
2783 | return; | |
2784 | ||
2785 | ret = drm_privacy_screen_set_sw_state(connector->privacy_screen, | |
2786 | connector_state->privacy_screen_sw_state); | |
2787 | if (ret) { | |
2788 | drm_err(connector->dev, "Error updating privacy-screen sw_state\n"); | |
2789 | return; | |
2790 | } | |
2791 | ||
2792 | /* The hw_state property value may have changed, update it. */ | |
2793 | drm_connector_update_privacy_screen_properties(connector, false); | |
2794 | } | |
2795 | EXPORT_SYMBOL(drm_connector_update_privacy_screen); | |
2796 | ||
97e14fbe | 2797 | int drm_connector_set_obj_prop(struct drm_mode_object *obj, |
52217195 DV |
2798 | struct drm_property *property, |
2799 | uint64_t value) | |
2800 | { | |
2801 | int ret = -EINVAL; | |
2802 | struct drm_connector *connector = obj_to_connector(obj); | |
2803 | ||
2804 | /* Do DPMS ourselves */ | |
2805 | if (property == connector->dev->mode_config.dpms_property) { | |
2806 | ret = (*connector->funcs->dpms)(connector, (int)value); | |
2807 | } else if (connector->funcs->set_property) | |
2808 | ret = connector->funcs->set_property(connector, property, value); | |
2809 | ||
144a7999 | 2810 | if (!ret) |
52217195 DV |
2811 | drm_object_property_set_value(&connector->base, property, value); |
2812 | return ret; | |
2813 | } | |
2814 | ||
97e14fbe DV |
2815 | int drm_connector_property_set_ioctl(struct drm_device *dev, |
2816 | void *data, struct drm_file *file_priv) | |
52217195 DV |
2817 | { |
2818 | struct drm_mode_connector_set_property *conn_set_prop = data; | |
2819 | struct drm_mode_obj_set_property obj_set_prop = { | |
2820 | .value = conn_set_prop->value, | |
2821 | .prop_id = conn_set_prop->prop_id, | |
2822 | .obj_id = conn_set_prop->connector_id, | |
2823 | .obj_type = DRM_MODE_OBJECT_CONNECTOR | |
2824 | }; | |
2825 | ||
2826 | /* It does all the locking and checking we need */ | |
2827 | return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv); | |
2828 | } | |
2829 | ||
2830 | static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector) | |
2831 | { | |
2832 | /* For atomic drivers only state objects are synchronously updated and | |
c2ce66da BMC |
2833 | * protected by modeset locks, so check those first. |
2834 | */ | |
52217195 DV |
2835 | if (connector->state) |
2836 | return connector->state->best_encoder; | |
2837 | return connector->encoder; | |
2838 | } | |
2839 | ||
c3ff0cdb AN |
2840 | static bool |
2841 | drm_mode_expose_to_userspace(const struct drm_display_mode *mode, | |
8445e2c5 | 2842 | const struct list_head *modes, |
c3ff0cdb | 2843 | const struct drm_file *file_priv) |
52217195 DV |
2844 | { |
2845 | /* | |
2846 | * If user-space hasn't configured the driver to expose the stereo 3D | |
2847 | * modes, don't expose them. | |
2848 | */ | |
2849 | if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode)) | |
2850 | return false; | |
c3ff0cdb AN |
2851 | /* |
2852 | * If user-space hasn't configured the driver to expose the modes | |
2853 | * with aspect-ratio, don't expose them. However if such a mode | |
2854 | * is unique, let it be exposed, but reset the aspect-ratio flags | |
2855 | * while preparing the list of user-modes. | |
2856 | */ | |
2857 | if (!file_priv->aspect_ratio_allowed) { | |
8445e2c5 | 2858 | const struct drm_display_mode *mode_itr; |
c3ff0cdb | 2859 | |
8445e2c5 VS |
2860 | list_for_each_entry(mode_itr, modes, head) { |
2861 | if (mode_itr->expose_to_userspace && | |
2862 | drm_mode_match(mode_itr, mode, | |
c3ff0cdb AN |
2863 | DRM_MODE_MATCH_TIMINGS | |
2864 | DRM_MODE_MATCH_CLOCK | | |
2865 | DRM_MODE_MATCH_FLAGS | | |
2866 | DRM_MODE_MATCH_3D_FLAGS)) | |
2867 | return false; | |
8445e2c5 | 2868 | } |
c3ff0cdb | 2869 | } |
52217195 DV |
2870 | |
2871 | return true; | |
2872 | } | |
2873 | ||
2874 | int drm_mode_getconnector(struct drm_device *dev, void *data, | |
2875 | struct drm_file *file_priv) | |
2876 | { | |
2877 | struct drm_mode_get_connector *out_resp = data; | |
2878 | struct drm_connector *connector; | |
2879 | struct drm_encoder *encoder; | |
2880 | struct drm_display_mode *mode; | |
2881 | int mode_count = 0; | |
2882 | int encoders_count = 0; | |
2883 | int ret = 0; | |
2884 | int copied = 0; | |
52217195 DV |
2885 | struct drm_mode_modeinfo u_mode; |
2886 | struct drm_mode_modeinfo __user *mode_ptr; | |
2887 | uint32_t __user *encoder_ptr; | |
869e76f7 | 2888 | bool is_current_master; |
52217195 DV |
2889 | |
2890 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
69fdf420 | 2891 | return -EOPNOTSUPP; |
52217195 DV |
2892 | |
2893 | memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo)); | |
2894 | ||
418da172 | 2895 | connector = drm_connector_lookup(dev, file_priv, out_resp->connector_id); |
91eefc05 DV |
2896 | if (!connector) |
2897 | return -ENOENT; | |
2898 | ||
62afb4ad | 2899 | encoders_count = hweight32(connector->possible_encoders); |
52217195 | 2900 | |
91eefc05 DV |
2901 | if ((out_resp->count_encoders >= encoders_count) && encoders_count) { |
2902 | copied = 0; | |
2903 | encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr); | |
83aefbb8 | 2904 | |
62afb4ad | 2905 | drm_connector_for_each_possible_encoder(connector, encoder) { |
83aefbb8 VS |
2906 | if (put_user(encoder->base.id, encoder_ptr + copied)) { |
2907 | ret = -EFAULT; | |
2908 | goto out; | |
91eefc05 | 2909 | } |
83aefbb8 | 2910 | copied++; |
91eefc05 DV |
2911 | } |
2912 | } | |
2913 | out_resp->count_encoders = encoders_count; | |
2914 | ||
2915 | out_resp->connector_id = connector->base.id; | |
2916 | out_resp->connector_type = connector->connector_type; | |
2917 | out_resp->connector_type_id = connector->connector_type_id; | |
2918 | ||
869e76f7 DCZX |
2919 | is_current_master = drm_is_current_master(file_priv); |
2920 | ||
91eefc05 | 2921 | mutex_lock(&dev->mode_config.mutex); |
52217195 | 2922 | if (out_resp->count_modes == 0) { |
869e76f7 | 2923 | if (is_current_master) |
8f86c82a SS |
2924 | connector->funcs->fill_modes(connector, |
2925 | dev->mode_config.max_width, | |
2926 | dev->mode_config.max_height); | |
2927 | else | |
2928 | drm_dbg_kms(dev, "User-space requested a forced probe on [CONNECTOR:%d:%s] but is not the DRM master, demoting to read-only probe", | |
2929 | connector->base.id, connector->name); | |
52217195 DV |
2930 | } |
2931 | ||
52217195 DV |
2932 | out_resp->mm_width = connector->display_info.width_mm; |
2933 | out_resp->mm_height = connector->display_info.height_mm; | |
2934 | out_resp->subpixel = connector->display_info.subpixel_order; | |
2935 | out_resp->connection = connector->status; | |
2936 | ||
91eefc05 | 2937 | /* delayed so we get modes regardless of pre-fill_modes state */ |
8445e2c5 VS |
2938 | list_for_each_entry(mode, &connector->modes, head) { |
2939 | WARN_ON(mode->expose_to_userspace); | |
2940 | ||
2941 | if (drm_mode_expose_to_userspace(mode, &connector->modes, | |
c3ff0cdb | 2942 | file_priv)) { |
8445e2c5 | 2943 | mode->expose_to_userspace = true; |
91eefc05 | 2944 | mode_count++; |
c3ff0cdb | 2945 | } |
8445e2c5 | 2946 | } |
52217195 DV |
2947 | |
2948 | /* | |
2949 | * This ioctl is called twice, once to determine how much space is | |
2950 | * needed, and the 2nd time to fill it. | |
2951 | */ | |
2952 | if ((out_resp->count_modes >= mode_count) && mode_count) { | |
2953 | copied = 0; | |
2954 | mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr; | |
8445e2c5 VS |
2955 | list_for_each_entry(mode, &connector->modes, head) { |
2956 | if (!mode->expose_to_userspace) | |
2957 | continue; | |
2958 | ||
2959 | /* Clear the tag for the next time around */ | |
2960 | mode->expose_to_userspace = false; | |
2961 | ||
52217195 | 2962 | drm_mode_convert_to_umode(&u_mode, mode); |
c3ff0cdb AN |
2963 | /* |
2964 | * Reset aspect ratio flags of user-mode, if modes with | |
2965 | * aspect-ratio are not supported. | |
2966 | */ | |
2967 | if (!file_priv->aspect_ratio_allowed) | |
2968 | u_mode.flags &= ~DRM_MODE_FLAG_PIC_AR_MASK; | |
52217195 DV |
2969 | if (copy_to_user(mode_ptr + copied, |
2970 | &u_mode, sizeof(u_mode))) { | |
2971 | ret = -EFAULT; | |
8445e2c5 VS |
2972 | |
2973 | /* | |
2974 | * Clear the tag for the rest of | |
2975 | * the modes for the next time around. | |
2976 | */ | |
2977 | list_for_each_entry_continue(mode, &connector->modes, head) | |
2978 | mode->expose_to_userspace = false; | |
2979 | ||
e94ac351 DV |
2980 | mutex_unlock(&dev->mode_config.mutex); |
2981 | ||
52217195 DV |
2982 | goto out; |
2983 | } | |
2984 | copied++; | |
2985 | } | |
8445e2c5 VS |
2986 | } else { |
2987 | /* Clear the tag for the next time around */ | |
2988 | list_for_each_entry(mode, &connector->modes, head) | |
2989 | mode->expose_to_userspace = false; | |
52217195 | 2990 | } |
8445e2c5 | 2991 | |
52217195 | 2992 | out_resp->count_modes = mode_count; |
52217195 | 2993 | mutex_unlock(&dev->mode_config.mutex); |
e94ac351 DV |
2994 | |
2995 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); | |
2996 | encoder = drm_connector_get_encoder(connector); | |
2997 | if (encoder) | |
2998 | out_resp->encoder_id = encoder->base.id; | |
2999 | else | |
3000 | out_resp->encoder_id = 0; | |
3001 | ||
3002 | /* Only grab properties after probing, to make sure EDID and other | |
c2ce66da BMC |
3003 | * properties reflect the latest status. |
3004 | */ | |
e94ac351 DV |
3005 | ret = drm_mode_object_get_properties(&connector->base, file_priv->atomic, |
3006 | (uint32_t __user *)(unsigned long)(out_resp->props_ptr), | |
3007 | (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr), | |
3008 | &out_resp->count_props); | |
3009 | drm_modeset_unlock(&dev->mode_config.connection_mutex); | |
3010 | ||
3011 | out: | |
ad093607 | 3012 | drm_connector_put(connector); |
52217195 DV |
3013 | |
3014 | return ret; | |
3015 | } | |
3016 | ||
3d3f7c1e HG |
3017 | /** |
3018 | * drm_connector_find_by_fwnode - Find a connector based on the associated fwnode | |
3019 | * @fwnode: fwnode for which to find the matching drm_connector | |
3020 | * | |
3021 | * This functions looks up a drm_connector based on its associated fwnode. When | |
3022 | * a connector is found a reference to the connector is returned. The caller must | |
3023 | * call drm_connector_put() to release this reference when it is done with the | |
3024 | * connector. | |
3025 | * | |
3026 | * Returns: A reference to the found connector or an ERR_PTR(). | |
3027 | */ | |
3028 | struct drm_connector *drm_connector_find_by_fwnode(struct fwnode_handle *fwnode) | |
3029 | { | |
3030 | struct drm_connector *connector, *found = ERR_PTR(-ENODEV); | |
3031 | ||
3032 | if (!fwnode) | |
3033 | return ERR_PTR(-ENODEV); | |
3034 | ||
3035 | mutex_lock(&connector_list_lock); | |
3036 | ||
3037 | list_for_each_entry(connector, &connector_list, global_connector_list_entry) { | |
3038 | if (connector->fwnode == fwnode || | |
3039 | (connector->fwnode && connector->fwnode->secondary == fwnode)) { | |
3040 | drm_connector_get(connector); | |
3041 | found = connector; | |
3042 | break; | |
3043 | } | |
3044 | } | |
3045 | ||
3046 | mutex_unlock(&connector_list_lock); | |
3047 | ||
3048 | return found; | |
3049 | } | |
3050 | ||
72ad4968 HG |
3051 | /** |
3052 | * drm_connector_oob_hotplug_event - Report out-of-band hotplug event to connector | |
f85d9e59 | 3053 | * @connector_fwnode: fwnode_handle to report the event on |
72ad4968 HG |
3054 | * |
3055 | * On some hardware a hotplug event notification may come from outside the display | |
3056 | * driver / device. An example of this is some USB Type-C setups where the hardware | |
3057 | * muxes the DisplayPort data and aux-lines but does not pass the altmode HPD | |
3058 | * status bit to the GPU's DP HPD pin. | |
3059 | * | |
3060 | * This function can be used to report these out-of-band events after obtaining | |
3061 | * a drm_connector reference through calling drm_connector_find_by_fwnode(). | |
3062 | */ | |
3063 | void drm_connector_oob_hotplug_event(struct fwnode_handle *connector_fwnode) | |
3064 | { | |
3065 | struct drm_connector *connector; | |
3066 | ||
3067 | connector = drm_connector_find_by_fwnode(connector_fwnode); | |
3068 | if (IS_ERR(connector)) | |
3069 | return; | |
3070 | ||
3071 | if (connector->funcs->oob_hotplug_event) | |
3072 | connector->funcs->oob_hotplug_event(connector); | |
3073 | ||
3074 | drm_connector_put(connector); | |
3075 | } | |
3076 | EXPORT_SYMBOL(drm_connector_oob_hotplug_event); | |
3077 | ||
9498c19b DV |
3078 | |
3079 | /** | |
3080 | * DOC: Tile group | |
3081 | * | |
3082 | * Tile groups are used to represent tiled monitors with a unique integer | |
3083 | * identifier. Tiled monitors using DisplayID v1.3 have a unique 8-byte handle, | |
3084 | * we store this in a tile group, so we have a common identifier for all tiles | |
3085 | * in a monitor group. The property is called "TILE". Drivers can manage tile | |
3086 | * groups using drm_mode_create_tile_group(), drm_mode_put_tile_group() and | |
3087 | * drm_mode_get_tile_group(). But this is only needed for internal panels where | |
3088 | * the tile group information is exposed through a non-standard way. | |
3089 | */ | |
3090 | ||
3091 | static void drm_tile_group_free(struct kref *kref) | |
3092 | { | |
3093 | struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount); | |
3094 | struct drm_device *dev = tg->dev; | |
948de842 | 3095 | |
9498c19b DV |
3096 | mutex_lock(&dev->mode_config.idr_mutex); |
3097 | idr_remove(&dev->mode_config.tile_idr, tg->id); | |
3098 | mutex_unlock(&dev->mode_config.idr_mutex); | |
3099 | kfree(tg); | |
3100 | } | |
3101 | ||
3102 | /** | |
3103 | * drm_mode_put_tile_group - drop a reference to a tile group. | |
3104 | * @dev: DRM device | |
3105 | * @tg: tile group to drop reference to. | |
3106 | * | |
3107 | * drop reference to tile group and free if 0. | |
3108 | */ | |
3109 | void drm_mode_put_tile_group(struct drm_device *dev, | |
3110 | struct drm_tile_group *tg) | |
3111 | { | |
3112 | kref_put(&tg->refcount, drm_tile_group_free); | |
3113 | } | |
3114 | EXPORT_SYMBOL(drm_mode_put_tile_group); | |
3115 | ||
3116 | /** | |
3117 | * drm_mode_get_tile_group - get a reference to an existing tile group | |
3118 | * @dev: DRM device | |
3119 | * @topology: 8-bytes unique per monitor. | |
3120 | * | |
3121 | * Use the unique bytes to get a reference to an existing tile group. | |
3122 | * | |
3123 | * RETURNS: | |
3124 | * tile group or NULL if not found. | |
3125 | */ | |
3126 | struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev, | |
267ea759 | 3127 | const char topology[8]) |
9498c19b DV |
3128 | { |
3129 | struct drm_tile_group *tg; | |
3130 | int id; | |
948de842 | 3131 | |
9498c19b DV |
3132 | mutex_lock(&dev->mode_config.idr_mutex); |
3133 | idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) { | |
3134 | if (!memcmp(tg->group_data, topology, 8)) { | |
3135 | if (!kref_get_unless_zero(&tg->refcount)) | |
3136 | tg = NULL; | |
3137 | mutex_unlock(&dev->mode_config.idr_mutex); | |
3138 | return tg; | |
3139 | } | |
3140 | } | |
3141 | mutex_unlock(&dev->mode_config.idr_mutex); | |
3142 | return NULL; | |
3143 | } | |
3144 | EXPORT_SYMBOL(drm_mode_get_tile_group); | |
3145 | ||
3146 | /** | |
3147 | * drm_mode_create_tile_group - create a tile group from a displayid description | |
3148 | * @dev: DRM device | |
3149 | * @topology: 8-bytes unique per monitor. | |
3150 | * | |
3151 | * Create a tile group for the unique monitor, and get a unique | |
3152 | * identifier for the tile group. | |
3153 | * | |
3154 | * RETURNS: | |
705c8160 | 3155 | * new tile group or NULL. |
9498c19b DV |
3156 | */ |
3157 | struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev, | |
267ea759 | 3158 | const char topology[8]) |
9498c19b DV |
3159 | { |
3160 | struct drm_tile_group *tg; | |
3161 | int ret; | |
3162 | ||
3163 | tg = kzalloc(sizeof(*tg), GFP_KERNEL); | |
3164 | if (!tg) | |
705c8160 | 3165 | return NULL; |
9498c19b DV |
3166 | |
3167 | kref_init(&tg->refcount); | |
3168 | memcpy(tg->group_data, topology, 8); | |
3169 | tg->dev = dev; | |
3170 | ||
3171 | mutex_lock(&dev->mode_config.idr_mutex); | |
3172 | ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL); | |
3173 | if (ret >= 0) { | |
3174 | tg->id = ret; | |
3175 | } else { | |
3176 | kfree(tg); | |
705c8160 | 3177 | tg = NULL; |
9498c19b DV |
3178 | } |
3179 | ||
3180 | mutex_unlock(&dev->mode_config.idr_mutex); | |
3181 | return tg; | |
3182 | } | |
3183 | EXPORT_SYMBOL(drm_mode_create_tile_group); |