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52217195 DV |
1 | /* |
2 | * Copyright (c) 2016 Intel Corporation | |
3 | * | |
4 | * Permission to use, copy, modify, distribute, and sell this software and its | |
5 | * documentation for any purpose is hereby granted without fee, provided that | |
6 | * the above copyright notice appear in all copies and that both that copyright | |
7 | * notice and this permission notice appear in supporting documentation, and | |
8 | * that the name of the copyright holders not be used in advertising or | |
9 | * publicity pertaining to distribution of the software without specific, | |
10 | * written prior permission. The copyright holders make no representations | |
11 | * about the suitability of this software for any purpose. It is provided "as | |
12 | * is" without express or implied warranty. | |
13 | * | |
14 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
15 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
16 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
17 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
18 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
19 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
20 | * OF THIS SOFTWARE. | |
21 | */ | |
22 | ||
23 | #include <drm/drmP.h> | |
24 | #include <drm/drm_connector.h> | |
25 | #include <drm/drm_edid.h> | |
26 | ||
27 | #include "drm_crtc_internal.h" | |
28 | #include "drm_internal.h" | |
29 | ||
ae2a6da8 DV |
30 | /** |
31 | * DOC: overview | |
32 | * | |
33 | * In DRM connectors are the general abstraction for display sinks, and include | |
34 | * als fixed panels or anything else that can display pixels in some form. As | |
35 | * opposed to all other KMS objects representing hardware (like CRTC, encoder or | |
36 | * plane abstractions) connectors can be hotplugged and unplugged at runtime. | |
37 | * Hence they are reference-counted using drm_connector_reference() and | |
38 | * drm_connector_unreference(). | |
39 | * | |
40 | * KMS driver must create, initialize, register and attach at a struct | |
41 | * &drm_connector for each such sink. The instance is created as other KMS | |
42 | * objects and initialized by setting the following fields. | |
43 | * | |
44 | * The connector is then registered with a call to drm_connector_init() with a | |
45 | * pointer to the connector functions and a connector type, and exposed through | |
46 | * sysfs with a call to drm_connector_register(). | |
47 | * | |
48 | * Connectors must be attached to an encoder to be used. For devices that map | |
49 | * connectors to encoders 1:1, the connector should be attached at | |
50 | * initialization time with a call to drm_mode_connector_attach_encoder(). The | |
51 | * driver must also set the struct &drm_connector encoder field to point to the | |
52 | * attached encoder. | |
53 | * | |
54 | * For connectors which are not fixed (like built-in panels) the driver needs to | |
55 | * support hotplug notifications. The simplest way to do that is by using the | |
56 | * probe helpers, see drm_kms_helper_poll_init() for connectors which don't have | |
57 | * hardware support for hotplug interrupts. Connectors with hardware hotplug | |
58 | * support can instead use e.g. drm_helper_hpd_irq_event(). | |
59 | */ | |
60 | ||
52217195 DV |
61 | struct drm_conn_prop_enum_list { |
62 | int type; | |
63 | const char *name; | |
64 | struct ida ida; | |
65 | }; | |
66 | ||
67 | /* | |
68 | * Connector and encoder types. | |
69 | */ | |
70 | static struct drm_conn_prop_enum_list drm_connector_enum_list[] = { | |
71 | { DRM_MODE_CONNECTOR_Unknown, "Unknown" }, | |
72 | { DRM_MODE_CONNECTOR_VGA, "VGA" }, | |
73 | { DRM_MODE_CONNECTOR_DVII, "DVI-I" }, | |
74 | { DRM_MODE_CONNECTOR_DVID, "DVI-D" }, | |
75 | { DRM_MODE_CONNECTOR_DVIA, "DVI-A" }, | |
76 | { DRM_MODE_CONNECTOR_Composite, "Composite" }, | |
77 | { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" }, | |
78 | { DRM_MODE_CONNECTOR_LVDS, "LVDS" }, | |
79 | { DRM_MODE_CONNECTOR_Component, "Component" }, | |
80 | { DRM_MODE_CONNECTOR_9PinDIN, "DIN" }, | |
81 | { DRM_MODE_CONNECTOR_DisplayPort, "DP" }, | |
82 | { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" }, | |
83 | { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" }, | |
84 | { DRM_MODE_CONNECTOR_TV, "TV" }, | |
85 | { DRM_MODE_CONNECTOR_eDP, "eDP" }, | |
86 | { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" }, | |
87 | { DRM_MODE_CONNECTOR_DSI, "DSI" }, | |
88 | { DRM_MODE_CONNECTOR_DPI, "DPI" }, | |
89 | }; | |
90 | ||
91 | void drm_connector_ida_init(void) | |
92 | { | |
93 | int i; | |
94 | ||
95 | for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++) | |
96 | ida_init(&drm_connector_enum_list[i].ida); | |
97 | } | |
98 | ||
99 | void drm_connector_ida_destroy(void) | |
100 | { | |
101 | int i; | |
102 | ||
103 | for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++) | |
104 | ida_destroy(&drm_connector_enum_list[i].ida); | |
105 | } | |
106 | ||
107 | /** | |
108 | * drm_connector_get_cmdline_mode - reads the user's cmdline mode | |
109 | * @connector: connector to quwery | |
110 | * | |
ae2a6da8 | 111 | * The kernel supports per-connector configuration of its consoles through |
52217195 DV |
112 | * use of the video= parameter. This function parses that option and |
113 | * extracts the user's specified mode (or enable/disable status) for a | |
114 | * particular connector. This is typically only used during the early fbdev | |
115 | * setup. | |
116 | */ | |
117 | static void drm_connector_get_cmdline_mode(struct drm_connector *connector) | |
118 | { | |
119 | struct drm_cmdline_mode *mode = &connector->cmdline_mode; | |
120 | char *option = NULL; | |
121 | ||
122 | if (fb_get_options(connector->name, &option)) | |
123 | return; | |
124 | ||
125 | if (!drm_mode_parse_command_line_for_connector(option, | |
126 | connector, | |
127 | mode)) | |
128 | return; | |
129 | ||
130 | if (mode->force) { | |
131 | const char *s; | |
132 | ||
133 | switch (mode->force) { | |
134 | case DRM_FORCE_OFF: | |
135 | s = "OFF"; | |
136 | break; | |
137 | case DRM_FORCE_ON_DIGITAL: | |
138 | s = "ON - dig"; | |
139 | break; | |
140 | default: | |
141 | case DRM_FORCE_ON: | |
142 | s = "ON"; | |
143 | break; | |
144 | } | |
145 | ||
146 | DRM_INFO("forcing %s connector %s\n", connector->name, s); | |
147 | connector->force = mode->force; | |
148 | } | |
149 | ||
150 | DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n", | |
151 | connector->name, | |
152 | mode->xres, mode->yres, | |
153 | mode->refresh_specified ? mode->refresh : 60, | |
154 | mode->rb ? " reduced blanking" : "", | |
155 | mode->margins ? " with margins" : "", | |
156 | mode->interlace ? " interlaced" : ""); | |
157 | } | |
158 | ||
159 | static void drm_connector_free(struct kref *kref) | |
160 | { | |
161 | struct drm_connector *connector = | |
162 | container_of(kref, struct drm_connector, base.refcount); | |
163 | struct drm_device *dev = connector->dev; | |
164 | ||
165 | drm_mode_object_unregister(dev, &connector->base); | |
166 | connector->funcs->destroy(connector); | |
167 | } | |
168 | ||
169 | /** | |
170 | * drm_connector_init - Init a preallocated connector | |
171 | * @dev: DRM device | |
172 | * @connector: the connector to init | |
173 | * @funcs: callbacks for this connector | |
174 | * @connector_type: user visible type of the connector | |
175 | * | |
176 | * Initialises a preallocated connector. Connectors should be | |
177 | * subclassed as part of driver connector objects. | |
178 | * | |
179 | * Returns: | |
180 | * Zero on success, error code on failure. | |
181 | */ | |
182 | int drm_connector_init(struct drm_device *dev, | |
183 | struct drm_connector *connector, | |
184 | const struct drm_connector_funcs *funcs, | |
185 | int connector_type) | |
186 | { | |
187 | struct drm_mode_config *config = &dev->mode_config; | |
188 | int ret; | |
189 | struct ida *connector_ida = | |
190 | &drm_connector_enum_list[connector_type].ida; | |
191 | ||
192 | drm_modeset_lock_all(dev); | |
193 | ||
194 | ret = drm_mode_object_get_reg(dev, &connector->base, | |
195 | DRM_MODE_OBJECT_CONNECTOR, | |
196 | false, drm_connector_free); | |
197 | if (ret) | |
198 | goto out_unlock; | |
199 | ||
200 | connector->base.properties = &connector->properties; | |
201 | connector->dev = dev; | |
202 | connector->funcs = funcs; | |
203 | ||
204 | ret = ida_simple_get(&config->connector_ida, 0, 0, GFP_KERNEL); | |
205 | if (ret < 0) | |
206 | goto out_put; | |
207 | connector->index = ret; | |
208 | ret = 0; | |
209 | ||
210 | connector->connector_type = connector_type; | |
211 | connector->connector_type_id = | |
212 | ida_simple_get(connector_ida, 1, 0, GFP_KERNEL); | |
213 | if (connector->connector_type_id < 0) { | |
214 | ret = connector->connector_type_id; | |
215 | goto out_put_id; | |
216 | } | |
217 | connector->name = | |
218 | kasprintf(GFP_KERNEL, "%s-%d", | |
219 | drm_connector_enum_list[connector_type].name, | |
220 | connector->connector_type_id); | |
221 | if (!connector->name) { | |
222 | ret = -ENOMEM; | |
223 | goto out_put_type_id; | |
224 | } | |
225 | ||
226 | INIT_LIST_HEAD(&connector->probed_modes); | |
227 | INIT_LIST_HEAD(&connector->modes); | |
4e5b54f1 | 228 | mutex_init(&connector->mutex); |
52217195 DV |
229 | connector->edid_blob_ptr = NULL; |
230 | connector->status = connector_status_unknown; | |
231 | ||
232 | drm_connector_get_cmdline_mode(connector); | |
233 | ||
234 | /* We should add connectors at the end to avoid upsetting the connector | |
235 | * index too much. */ | |
236 | list_add_tail(&connector->head, &config->connector_list); | |
237 | config->num_connector++; | |
238 | ||
239 | if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL) | |
240 | drm_object_attach_property(&connector->base, | |
241 | config->edid_property, | |
242 | 0); | |
243 | ||
244 | drm_object_attach_property(&connector->base, | |
245 | config->dpms_property, 0); | |
246 | ||
247 | if (drm_core_check_feature(dev, DRIVER_ATOMIC)) { | |
248 | drm_object_attach_property(&connector->base, config->prop_crtc_id, 0); | |
249 | } | |
250 | ||
251 | connector->debugfs_entry = NULL; | |
252 | out_put_type_id: | |
253 | if (ret) | |
587680c1 | 254 | ida_simple_remove(connector_ida, connector->connector_type_id); |
52217195 DV |
255 | out_put_id: |
256 | if (ret) | |
587680c1 | 257 | ida_simple_remove(&config->connector_ida, connector->index); |
52217195 DV |
258 | out_put: |
259 | if (ret) | |
260 | drm_mode_object_unregister(dev, &connector->base); | |
261 | ||
262 | out_unlock: | |
263 | drm_modeset_unlock_all(dev); | |
264 | ||
265 | return ret; | |
266 | } | |
267 | EXPORT_SYMBOL(drm_connector_init); | |
268 | ||
269 | /** | |
270 | * drm_mode_connector_attach_encoder - attach a connector to an encoder | |
271 | * @connector: connector to attach | |
272 | * @encoder: encoder to attach @connector to | |
273 | * | |
274 | * This function links up a connector to an encoder. Note that the routing | |
275 | * restrictions between encoders and crtcs are exposed to userspace through the | |
276 | * possible_clones and possible_crtcs bitmasks. | |
277 | * | |
278 | * Returns: | |
279 | * Zero on success, negative errno on failure. | |
280 | */ | |
281 | int drm_mode_connector_attach_encoder(struct drm_connector *connector, | |
282 | struct drm_encoder *encoder) | |
283 | { | |
284 | int i; | |
285 | ||
286 | /* | |
287 | * In the past, drivers have attempted to model the static association | |
288 | * of connector to encoder in simple connector/encoder devices using a | |
289 | * direct assignment of connector->encoder = encoder. This connection | |
290 | * is a logical one and the responsibility of the core, so drivers are | |
291 | * expected not to mess with this. | |
292 | * | |
293 | * Note that the error return should've been enough here, but a large | |
294 | * majority of drivers ignores the return value, so add in a big WARN | |
295 | * to get people's attention. | |
296 | */ | |
297 | if (WARN_ON(connector->encoder)) | |
298 | return -EINVAL; | |
299 | ||
300 | for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { | |
301 | if (connector->encoder_ids[i] == 0) { | |
302 | connector->encoder_ids[i] = encoder->base.id; | |
303 | return 0; | |
304 | } | |
305 | } | |
306 | return -ENOMEM; | |
307 | } | |
308 | EXPORT_SYMBOL(drm_mode_connector_attach_encoder); | |
309 | ||
310 | static void drm_mode_remove(struct drm_connector *connector, | |
311 | struct drm_display_mode *mode) | |
312 | { | |
313 | list_del(&mode->head); | |
314 | drm_mode_destroy(connector->dev, mode); | |
315 | } | |
316 | ||
317 | /** | |
318 | * drm_connector_cleanup - cleans up an initialised connector | |
319 | * @connector: connector to cleanup | |
320 | * | |
321 | * Cleans up the connector but doesn't free the object. | |
322 | */ | |
323 | void drm_connector_cleanup(struct drm_connector *connector) | |
324 | { | |
325 | struct drm_device *dev = connector->dev; | |
326 | struct drm_display_mode *mode, *t; | |
327 | ||
328 | /* The connector should have been removed from userspace long before | |
329 | * it is finally destroyed. | |
330 | */ | |
331 | if (WARN_ON(connector->registered)) | |
332 | drm_connector_unregister(connector); | |
333 | ||
334 | if (connector->tile_group) { | |
335 | drm_mode_put_tile_group(dev, connector->tile_group); | |
336 | connector->tile_group = NULL; | |
337 | } | |
338 | ||
339 | list_for_each_entry_safe(mode, t, &connector->probed_modes, head) | |
340 | drm_mode_remove(connector, mode); | |
341 | ||
342 | list_for_each_entry_safe(mode, t, &connector->modes, head) | |
343 | drm_mode_remove(connector, mode); | |
344 | ||
9a47dba1 CJ |
345 | ida_simple_remove(&drm_connector_enum_list[connector->connector_type].ida, |
346 | connector->connector_type_id); | |
52217195 | 347 | |
9a47dba1 CJ |
348 | ida_simple_remove(&dev->mode_config.connector_ida, |
349 | connector->index); | |
52217195 DV |
350 | |
351 | kfree(connector->display_info.bus_formats); | |
352 | drm_mode_object_unregister(dev, &connector->base); | |
353 | kfree(connector->name); | |
354 | connector->name = NULL; | |
355 | list_del(&connector->head); | |
356 | dev->mode_config.num_connector--; | |
357 | ||
358 | WARN_ON(connector->state && !connector->funcs->atomic_destroy_state); | |
359 | if (connector->state && connector->funcs->atomic_destroy_state) | |
360 | connector->funcs->atomic_destroy_state(connector, | |
361 | connector->state); | |
362 | ||
4e5b54f1 DV |
363 | mutex_destroy(&connector->mutex); |
364 | ||
52217195 DV |
365 | memset(connector, 0, sizeof(*connector)); |
366 | } | |
367 | EXPORT_SYMBOL(drm_connector_cleanup); | |
368 | ||
369 | /** | |
370 | * drm_connector_register - register a connector | |
371 | * @connector: the connector to register | |
372 | * | |
373 | * Register userspace interfaces for a connector | |
374 | * | |
375 | * Returns: | |
376 | * Zero on success, error code on failure. | |
377 | */ | |
378 | int drm_connector_register(struct drm_connector *connector) | |
379 | { | |
4e5b54f1 | 380 | int ret = 0; |
52217195 | 381 | |
4e5b54f1 | 382 | mutex_lock(&connector->mutex); |
52217195 | 383 | if (connector->registered) |
4e5b54f1 | 384 | goto unlock; |
52217195 DV |
385 | |
386 | ret = drm_sysfs_connector_add(connector); | |
387 | if (ret) | |
4e5b54f1 | 388 | goto unlock; |
52217195 DV |
389 | |
390 | ret = drm_debugfs_connector_add(connector); | |
391 | if (ret) { | |
392 | goto err_sysfs; | |
393 | } | |
394 | ||
395 | if (connector->funcs->late_register) { | |
396 | ret = connector->funcs->late_register(connector); | |
397 | if (ret) | |
398 | goto err_debugfs; | |
399 | } | |
400 | ||
401 | drm_mode_object_register(connector->dev, &connector->base); | |
402 | ||
403 | connector->registered = true; | |
4e5b54f1 | 404 | goto unlock; |
52217195 DV |
405 | |
406 | err_debugfs: | |
407 | drm_debugfs_connector_remove(connector); | |
408 | err_sysfs: | |
409 | drm_sysfs_connector_remove(connector); | |
4e5b54f1 DV |
410 | unlock: |
411 | mutex_unlock(&connector->mutex); | |
52217195 DV |
412 | return ret; |
413 | } | |
414 | EXPORT_SYMBOL(drm_connector_register); | |
415 | ||
416 | /** | |
417 | * drm_connector_unregister - unregister a connector | |
418 | * @connector: the connector to unregister | |
419 | * | |
420 | * Unregister userspace interfaces for a connector | |
421 | */ | |
422 | void drm_connector_unregister(struct drm_connector *connector) | |
423 | { | |
4e5b54f1 DV |
424 | mutex_lock(&connector->mutex); |
425 | if (!connector->registered) { | |
426 | mutex_unlock(&connector->mutex); | |
52217195 | 427 | return; |
4e5b54f1 | 428 | } |
52217195 DV |
429 | |
430 | if (connector->funcs->early_unregister) | |
431 | connector->funcs->early_unregister(connector); | |
432 | ||
433 | drm_sysfs_connector_remove(connector); | |
434 | drm_debugfs_connector_remove(connector); | |
435 | ||
436 | connector->registered = false; | |
4e5b54f1 | 437 | mutex_unlock(&connector->mutex); |
52217195 DV |
438 | } |
439 | EXPORT_SYMBOL(drm_connector_unregister); | |
440 | ||
441 | void drm_connector_unregister_all(struct drm_device *dev) | |
442 | { | |
443 | struct drm_connector *connector; | |
444 | ||
445 | /* FIXME: taking the mode config mutex ends up in a clash with sysfs */ | |
446 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
447 | drm_connector_unregister(connector); | |
448 | } | |
449 | ||
450 | int drm_connector_register_all(struct drm_device *dev) | |
451 | { | |
452 | struct drm_connector *connector; | |
453 | int ret; | |
454 | ||
455 | /* FIXME: taking the mode config mutex ends up in a clash with | |
456 | * fbcon/backlight registration */ | |
457 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
458 | ret = drm_connector_register(connector); | |
459 | if (ret) | |
460 | goto err; | |
461 | } | |
462 | ||
463 | return 0; | |
464 | ||
465 | err: | |
466 | mutex_unlock(&dev->mode_config.mutex); | |
467 | drm_connector_unregister_all(dev); | |
468 | return ret; | |
469 | } | |
470 | ||
471 | /** | |
472 | * drm_get_connector_status_name - return a string for connector status | |
473 | * @status: connector status to compute name of | |
474 | * | |
475 | * In contrast to the other drm_get_*_name functions this one here returns a | |
476 | * const pointer and hence is threadsafe. | |
477 | */ | |
478 | const char *drm_get_connector_status_name(enum drm_connector_status status) | |
479 | { | |
480 | if (status == connector_status_connected) | |
481 | return "connected"; | |
482 | else if (status == connector_status_disconnected) | |
483 | return "disconnected"; | |
484 | else | |
485 | return "unknown"; | |
486 | } | |
487 | EXPORT_SYMBOL(drm_get_connector_status_name); | |
488 | ||
489 | static const struct drm_prop_enum_list drm_subpixel_enum_list[] = { | |
490 | { SubPixelUnknown, "Unknown" }, | |
491 | { SubPixelHorizontalRGB, "Horizontal RGB" }, | |
492 | { SubPixelHorizontalBGR, "Horizontal BGR" }, | |
493 | { SubPixelVerticalRGB, "Vertical RGB" }, | |
494 | { SubPixelVerticalBGR, "Vertical BGR" }, | |
495 | { SubPixelNone, "None" }, | |
496 | }; | |
497 | ||
498 | /** | |
499 | * drm_get_subpixel_order_name - return a string for a given subpixel enum | |
500 | * @order: enum of subpixel_order | |
501 | * | |
502 | * Note you could abuse this and return something out of bounds, but that | |
503 | * would be a caller error. No unscrubbed user data should make it here. | |
504 | */ | |
505 | const char *drm_get_subpixel_order_name(enum subpixel_order order) | |
506 | { | |
507 | return drm_subpixel_enum_list[order].name; | |
508 | } | |
509 | EXPORT_SYMBOL(drm_get_subpixel_order_name); | |
510 | ||
511 | static const struct drm_prop_enum_list drm_dpms_enum_list[] = { | |
512 | { DRM_MODE_DPMS_ON, "On" }, | |
513 | { DRM_MODE_DPMS_STANDBY, "Standby" }, | |
514 | { DRM_MODE_DPMS_SUSPEND, "Suspend" }, | |
515 | { DRM_MODE_DPMS_OFF, "Off" } | |
516 | }; | |
517 | DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list) | |
518 | ||
b3c6c8bf DV |
519 | /** |
520 | * drm_display_info_set_bus_formats - set the supported bus formats | |
521 | * @info: display info to store bus formats in | |
522 | * @formats: array containing the supported bus formats | |
523 | * @num_formats: the number of entries in the fmts array | |
524 | * | |
525 | * Store the supported bus formats in display info structure. | |
526 | * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for | |
527 | * a full list of available formats. | |
528 | */ | |
529 | int drm_display_info_set_bus_formats(struct drm_display_info *info, | |
530 | const u32 *formats, | |
531 | unsigned int num_formats) | |
532 | { | |
533 | u32 *fmts = NULL; | |
534 | ||
535 | if (!formats && num_formats) | |
536 | return -EINVAL; | |
537 | ||
538 | if (formats && num_formats) { | |
539 | fmts = kmemdup(formats, sizeof(*formats) * num_formats, | |
540 | GFP_KERNEL); | |
541 | if (!fmts) | |
542 | return -ENOMEM; | |
543 | } | |
544 | ||
545 | kfree(info->bus_formats); | |
546 | info->bus_formats = fmts; | |
547 | info->num_bus_formats = num_formats; | |
548 | ||
549 | return 0; | |
550 | } | |
551 | EXPORT_SYMBOL(drm_display_info_set_bus_formats); | |
552 | ||
52217195 DV |
553 | /* Optional connector properties. */ |
554 | static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] = { | |
555 | { DRM_MODE_SCALE_NONE, "None" }, | |
556 | { DRM_MODE_SCALE_FULLSCREEN, "Full" }, | |
557 | { DRM_MODE_SCALE_CENTER, "Center" }, | |
558 | { DRM_MODE_SCALE_ASPECT, "Full aspect" }, | |
559 | }; | |
560 | ||
561 | static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = { | |
562 | { DRM_MODE_PICTURE_ASPECT_NONE, "Automatic" }, | |
563 | { DRM_MODE_PICTURE_ASPECT_4_3, "4:3" }, | |
564 | { DRM_MODE_PICTURE_ASPECT_16_9, "16:9" }, | |
565 | }; | |
566 | ||
567 | static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = { | |
568 | { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ | |
569 | { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ | |
570 | { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ | |
571 | }; | |
572 | DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list) | |
573 | ||
574 | static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = { | |
575 | { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */ | |
576 | { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ | |
577 | { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ | |
578 | }; | |
579 | DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name, | |
580 | drm_dvi_i_subconnector_enum_list) | |
581 | ||
582 | static const struct drm_prop_enum_list drm_tv_select_enum_list[] = { | |
583 | { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ | |
584 | { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ | |
585 | { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ | |
586 | { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ | |
587 | { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ | |
588 | }; | |
589 | DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list) | |
590 | ||
591 | static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = { | |
592 | { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */ | |
593 | { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ | |
594 | { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ | |
595 | { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ | |
596 | { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ | |
597 | }; | |
598 | DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name, | |
599 | drm_tv_subconnector_enum_list) | |
600 | ||
4ada6f22 DV |
601 | /** |
602 | * DOC: standard connector properties | |
603 | * | |
604 | * DRM connectors have a few standardized properties: | |
605 | * | |
606 | * EDID: | |
607 | * Blob property which contains the current EDID read from the sink. This | |
608 | * is useful to parse sink identification information like vendor, model | |
609 | * and serial. Drivers should update this property by calling | |
610 | * drm_mode_connector_update_edid_property(), usually after having parsed | |
611 | * the EDID using drm_add_edid_modes(). Userspace cannot change this | |
612 | * property. | |
613 | * DPMS: | |
614 | * Legacy property for setting the power state of the connector. For atomic | |
615 | * drivers this is only provided for backwards compatibility with existing | |
616 | * drivers, it remaps to controlling the "ACTIVE" property on the CRTC the | |
617 | * connector is linked to. Drivers should never set this property directly, | |
618 | * it is handled by the DRM core by calling the ->dpms() callback in | |
619 | * &drm_connector_funcs. Atomic drivers should implement this hook using | |
620 | * drm_atomic_helper_connector_dpms(). This is the only property standard | |
621 | * connector property that userspace can change. | |
622 | * PATH: | |
623 | * Connector path property to identify how this sink is physically | |
624 | * connected. Used by DP MST. This should be set by calling | |
625 | * drm_mode_connector_set_path_property(), in the case of DP MST with the | |
626 | * path property the MST manager created. Userspace cannot change this | |
627 | * property. | |
628 | * TILE: | |
629 | * Connector tile group property to indicate how a set of DRM connector | |
630 | * compose together into one logical screen. This is used by both high-res | |
631 | * external screens (often only using a single cable, but exposing multiple | |
632 | * DP MST sinks), or high-res integrated panels (like dual-link DSI) which | |
633 | * are not gen-locked. Note that for tiled panels which are genlocked, like | |
634 | * dual-link LVDS or dual-link DSI, the driver should try to not expose the | |
635 | * tiling and virtualize both &drm_crtc and &drm_plane if needed. Drivers | |
636 | * should update this value using drm_mode_connector_set_tile_property(). | |
637 | * Userspace cannot change this property. | |
638 | * | |
639 | * Connectors also have one standardized atomic property: | |
640 | * | |
641 | * CRTC_ID: | |
642 | * Mode object ID of the &drm_crtc this connector should be connected to. | |
643 | */ | |
644 | ||
52217195 DV |
645 | int drm_connector_create_standard_properties(struct drm_device *dev) |
646 | { | |
647 | struct drm_property *prop; | |
648 | ||
649 | prop = drm_property_create(dev, DRM_MODE_PROP_BLOB | | |
650 | DRM_MODE_PROP_IMMUTABLE, | |
651 | "EDID", 0); | |
652 | if (!prop) | |
653 | return -ENOMEM; | |
654 | dev->mode_config.edid_property = prop; | |
655 | ||
656 | prop = drm_property_create_enum(dev, 0, | |
657 | "DPMS", drm_dpms_enum_list, | |
658 | ARRAY_SIZE(drm_dpms_enum_list)); | |
659 | if (!prop) | |
660 | return -ENOMEM; | |
661 | dev->mode_config.dpms_property = prop; | |
662 | ||
663 | prop = drm_property_create(dev, | |
664 | DRM_MODE_PROP_BLOB | | |
665 | DRM_MODE_PROP_IMMUTABLE, | |
666 | "PATH", 0); | |
667 | if (!prop) | |
668 | return -ENOMEM; | |
669 | dev->mode_config.path_property = prop; | |
670 | ||
671 | prop = drm_property_create(dev, | |
672 | DRM_MODE_PROP_BLOB | | |
673 | DRM_MODE_PROP_IMMUTABLE, | |
674 | "TILE", 0); | |
675 | if (!prop) | |
676 | return -ENOMEM; | |
677 | dev->mode_config.tile_property = prop; | |
678 | ||
679 | return 0; | |
680 | } | |
681 | ||
682 | /** | |
683 | * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties | |
684 | * @dev: DRM device | |
685 | * | |
686 | * Called by a driver the first time a DVI-I connector is made. | |
687 | */ | |
688 | int drm_mode_create_dvi_i_properties(struct drm_device *dev) | |
689 | { | |
690 | struct drm_property *dvi_i_selector; | |
691 | struct drm_property *dvi_i_subconnector; | |
692 | ||
693 | if (dev->mode_config.dvi_i_select_subconnector_property) | |
694 | return 0; | |
695 | ||
696 | dvi_i_selector = | |
697 | drm_property_create_enum(dev, 0, | |
698 | "select subconnector", | |
699 | drm_dvi_i_select_enum_list, | |
700 | ARRAY_SIZE(drm_dvi_i_select_enum_list)); | |
701 | dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector; | |
702 | ||
703 | dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, | |
704 | "subconnector", | |
705 | drm_dvi_i_subconnector_enum_list, | |
706 | ARRAY_SIZE(drm_dvi_i_subconnector_enum_list)); | |
707 | dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector; | |
708 | ||
709 | return 0; | |
710 | } | |
711 | EXPORT_SYMBOL(drm_mode_create_dvi_i_properties); | |
712 | ||
713 | /** | |
714 | * drm_create_tv_properties - create TV specific connector properties | |
715 | * @dev: DRM device | |
716 | * @num_modes: number of different TV formats (modes) supported | |
717 | * @modes: array of pointers to strings containing name of each format | |
718 | * | |
719 | * Called by a driver's TV initialization routine, this function creates | |
720 | * the TV specific connector properties for a given device. Caller is | |
721 | * responsible for allocating a list of format names and passing them to | |
722 | * this routine. | |
723 | */ | |
724 | int drm_mode_create_tv_properties(struct drm_device *dev, | |
725 | unsigned int num_modes, | |
726 | const char * const modes[]) | |
727 | { | |
728 | struct drm_property *tv_selector; | |
729 | struct drm_property *tv_subconnector; | |
730 | unsigned int i; | |
731 | ||
732 | if (dev->mode_config.tv_select_subconnector_property) | |
733 | return 0; | |
734 | ||
735 | /* | |
736 | * Basic connector properties | |
737 | */ | |
738 | tv_selector = drm_property_create_enum(dev, 0, | |
739 | "select subconnector", | |
740 | drm_tv_select_enum_list, | |
741 | ARRAY_SIZE(drm_tv_select_enum_list)); | |
742 | if (!tv_selector) | |
743 | goto nomem; | |
744 | ||
745 | dev->mode_config.tv_select_subconnector_property = tv_selector; | |
746 | ||
747 | tv_subconnector = | |
748 | drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, | |
749 | "subconnector", | |
750 | drm_tv_subconnector_enum_list, | |
751 | ARRAY_SIZE(drm_tv_subconnector_enum_list)); | |
752 | if (!tv_subconnector) | |
753 | goto nomem; | |
754 | dev->mode_config.tv_subconnector_property = tv_subconnector; | |
755 | ||
756 | /* | |
757 | * Other, TV specific properties: margins & TV modes. | |
758 | */ | |
759 | dev->mode_config.tv_left_margin_property = | |
760 | drm_property_create_range(dev, 0, "left margin", 0, 100); | |
761 | if (!dev->mode_config.tv_left_margin_property) | |
762 | goto nomem; | |
763 | ||
764 | dev->mode_config.tv_right_margin_property = | |
765 | drm_property_create_range(dev, 0, "right margin", 0, 100); | |
766 | if (!dev->mode_config.tv_right_margin_property) | |
767 | goto nomem; | |
768 | ||
769 | dev->mode_config.tv_top_margin_property = | |
770 | drm_property_create_range(dev, 0, "top margin", 0, 100); | |
771 | if (!dev->mode_config.tv_top_margin_property) | |
772 | goto nomem; | |
773 | ||
774 | dev->mode_config.tv_bottom_margin_property = | |
775 | drm_property_create_range(dev, 0, "bottom margin", 0, 100); | |
776 | if (!dev->mode_config.tv_bottom_margin_property) | |
777 | goto nomem; | |
778 | ||
779 | dev->mode_config.tv_mode_property = | |
780 | drm_property_create(dev, DRM_MODE_PROP_ENUM, | |
781 | "mode", num_modes); | |
782 | if (!dev->mode_config.tv_mode_property) | |
783 | goto nomem; | |
784 | ||
785 | for (i = 0; i < num_modes; i++) | |
786 | drm_property_add_enum(dev->mode_config.tv_mode_property, i, | |
787 | i, modes[i]); | |
788 | ||
789 | dev->mode_config.tv_brightness_property = | |
790 | drm_property_create_range(dev, 0, "brightness", 0, 100); | |
791 | if (!dev->mode_config.tv_brightness_property) | |
792 | goto nomem; | |
793 | ||
794 | dev->mode_config.tv_contrast_property = | |
795 | drm_property_create_range(dev, 0, "contrast", 0, 100); | |
796 | if (!dev->mode_config.tv_contrast_property) | |
797 | goto nomem; | |
798 | ||
799 | dev->mode_config.tv_flicker_reduction_property = | |
800 | drm_property_create_range(dev, 0, "flicker reduction", 0, 100); | |
801 | if (!dev->mode_config.tv_flicker_reduction_property) | |
802 | goto nomem; | |
803 | ||
804 | dev->mode_config.tv_overscan_property = | |
805 | drm_property_create_range(dev, 0, "overscan", 0, 100); | |
806 | if (!dev->mode_config.tv_overscan_property) | |
807 | goto nomem; | |
808 | ||
809 | dev->mode_config.tv_saturation_property = | |
810 | drm_property_create_range(dev, 0, "saturation", 0, 100); | |
811 | if (!dev->mode_config.tv_saturation_property) | |
812 | goto nomem; | |
813 | ||
814 | dev->mode_config.tv_hue_property = | |
815 | drm_property_create_range(dev, 0, "hue", 0, 100); | |
816 | if (!dev->mode_config.tv_hue_property) | |
817 | goto nomem; | |
818 | ||
819 | return 0; | |
820 | nomem: | |
821 | return -ENOMEM; | |
822 | } | |
823 | EXPORT_SYMBOL(drm_mode_create_tv_properties); | |
824 | ||
825 | /** | |
826 | * drm_mode_create_scaling_mode_property - create scaling mode property | |
827 | * @dev: DRM device | |
828 | * | |
829 | * Called by a driver the first time it's needed, must be attached to desired | |
830 | * connectors. | |
831 | */ | |
832 | int drm_mode_create_scaling_mode_property(struct drm_device *dev) | |
833 | { | |
834 | struct drm_property *scaling_mode; | |
835 | ||
836 | if (dev->mode_config.scaling_mode_property) | |
837 | return 0; | |
838 | ||
839 | scaling_mode = | |
840 | drm_property_create_enum(dev, 0, "scaling mode", | |
841 | drm_scaling_mode_enum_list, | |
842 | ARRAY_SIZE(drm_scaling_mode_enum_list)); | |
843 | ||
844 | dev->mode_config.scaling_mode_property = scaling_mode; | |
845 | ||
846 | return 0; | |
847 | } | |
848 | EXPORT_SYMBOL(drm_mode_create_scaling_mode_property); | |
849 | ||
850 | /** | |
851 | * drm_mode_create_aspect_ratio_property - create aspect ratio property | |
852 | * @dev: DRM device | |
853 | * | |
854 | * Called by a driver the first time it's needed, must be attached to desired | |
855 | * connectors. | |
856 | * | |
857 | * Returns: | |
858 | * Zero on success, negative errno on failure. | |
859 | */ | |
860 | int drm_mode_create_aspect_ratio_property(struct drm_device *dev) | |
861 | { | |
862 | if (dev->mode_config.aspect_ratio_property) | |
863 | return 0; | |
864 | ||
865 | dev->mode_config.aspect_ratio_property = | |
866 | drm_property_create_enum(dev, 0, "aspect ratio", | |
867 | drm_aspect_ratio_enum_list, | |
868 | ARRAY_SIZE(drm_aspect_ratio_enum_list)); | |
869 | ||
870 | if (dev->mode_config.aspect_ratio_property == NULL) | |
871 | return -ENOMEM; | |
872 | ||
873 | return 0; | |
874 | } | |
875 | EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property); | |
876 | ||
877 | /** | |
878 | * drm_mode_create_suggested_offset_properties - create suggests offset properties | |
879 | * @dev: DRM device | |
880 | * | |
881 | * Create the the suggested x/y offset property for connectors. | |
882 | */ | |
883 | int drm_mode_create_suggested_offset_properties(struct drm_device *dev) | |
884 | { | |
885 | if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property) | |
886 | return 0; | |
887 | ||
888 | dev->mode_config.suggested_x_property = | |
889 | drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff); | |
890 | ||
891 | dev->mode_config.suggested_y_property = | |
892 | drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff); | |
893 | ||
894 | if (dev->mode_config.suggested_x_property == NULL || | |
895 | dev->mode_config.suggested_y_property == NULL) | |
896 | return -ENOMEM; | |
897 | return 0; | |
898 | } | |
899 | EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties); | |
900 | ||
901 | /** | |
902 | * drm_mode_connector_set_path_property - set tile property on connector | |
903 | * @connector: connector to set property on. | |
904 | * @path: path to use for property; must not be NULL. | |
905 | * | |
906 | * This creates a property to expose to userspace to specify a | |
907 | * connector path. This is mainly used for DisplayPort MST where | |
908 | * connectors have a topology and we want to allow userspace to give | |
909 | * them more meaningful names. | |
910 | * | |
911 | * Returns: | |
912 | * Zero on success, negative errno on failure. | |
913 | */ | |
914 | int drm_mode_connector_set_path_property(struct drm_connector *connector, | |
915 | const char *path) | |
916 | { | |
917 | struct drm_device *dev = connector->dev; | |
918 | int ret; | |
919 | ||
920 | ret = drm_property_replace_global_blob(dev, | |
921 | &connector->path_blob_ptr, | |
922 | strlen(path) + 1, | |
923 | path, | |
924 | &connector->base, | |
925 | dev->mode_config.path_property); | |
926 | return ret; | |
927 | } | |
928 | EXPORT_SYMBOL(drm_mode_connector_set_path_property); | |
929 | ||
930 | /** | |
931 | * drm_mode_connector_set_tile_property - set tile property on connector | |
932 | * @connector: connector to set property on. | |
933 | * | |
934 | * This looks up the tile information for a connector, and creates a | |
935 | * property for userspace to parse if it exists. The property is of | |
936 | * the form of 8 integers using ':' as a separator. | |
937 | * | |
938 | * Returns: | |
939 | * Zero on success, errno on failure. | |
940 | */ | |
941 | int drm_mode_connector_set_tile_property(struct drm_connector *connector) | |
942 | { | |
943 | struct drm_device *dev = connector->dev; | |
944 | char tile[256]; | |
945 | int ret; | |
946 | ||
947 | if (!connector->has_tile) { | |
948 | ret = drm_property_replace_global_blob(dev, | |
949 | &connector->tile_blob_ptr, | |
950 | 0, | |
951 | NULL, | |
952 | &connector->base, | |
953 | dev->mode_config.tile_property); | |
954 | return ret; | |
955 | } | |
956 | ||
957 | snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d", | |
958 | connector->tile_group->id, connector->tile_is_single_monitor, | |
959 | connector->num_h_tile, connector->num_v_tile, | |
960 | connector->tile_h_loc, connector->tile_v_loc, | |
961 | connector->tile_h_size, connector->tile_v_size); | |
962 | ||
963 | ret = drm_property_replace_global_blob(dev, | |
964 | &connector->tile_blob_ptr, | |
965 | strlen(tile) + 1, | |
966 | tile, | |
967 | &connector->base, | |
968 | dev->mode_config.tile_property); | |
969 | return ret; | |
970 | } | |
971 | EXPORT_SYMBOL(drm_mode_connector_set_tile_property); | |
972 | ||
973 | /** | |
974 | * drm_mode_connector_update_edid_property - update the edid property of a connector | |
975 | * @connector: drm connector | |
976 | * @edid: new value of the edid property | |
977 | * | |
978 | * This function creates a new blob modeset object and assigns its id to the | |
979 | * connector's edid property. | |
980 | * | |
981 | * Returns: | |
982 | * Zero on success, negative errno on failure. | |
983 | */ | |
984 | int drm_mode_connector_update_edid_property(struct drm_connector *connector, | |
985 | const struct edid *edid) | |
986 | { | |
987 | struct drm_device *dev = connector->dev; | |
988 | size_t size = 0; | |
989 | int ret; | |
990 | ||
991 | /* ignore requests to set edid when overridden */ | |
992 | if (connector->override_edid) | |
993 | return 0; | |
994 | ||
995 | if (edid) | |
996 | size = EDID_LENGTH * (1 + edid->extensions); | |
997 | ||
998 | ret = drm_property_replace_global_blob(dev, | |
999 | &connector->edid_blob_ptr, | |
1000 | size, | |
1001 | edid, | |
1002 | &connector->base, | |
1003 | dev->mode_config.edid_property); | |
1004 | return ret; | |
1005 | } | |
1006 | EXPORT_SYMBOL(drm_mode_connector_update_edid_property); | |
1007 | ||
1008 | int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj, | |
1009 | struct drm_property *property, | |
1010 | uint64_t value) | |
1011 | { | |
1012 | int ret = -EINVAL; | |
1013 | struct drm_connector *connector = obj_to_connector(obj); | |
1014 | ||
1015 | /* Do DPMS ourselves */ | |
1016 | if (property == connector->dev->mode_config.dpms_property) { | |
1017 | ret = (*connector->funcs->dpms)(connector, (int)value); | |
1018 | } else if (connector->funcs->set_property) | |
1019 | ret = connector->funcs->set_property(connector, property, value); | |
1020 | ||
1021 | /* store the property value if successful */ | |
1022 | if (!ret) | |
1023 | drm_object_property_set_value(&connector->base, property, value); | |
1024 | return ret; | |
1025 | } | |
1026 | ||
1027 | int drm_mode_connector_property_set_ioctl(struct drm_device *dev, | |
1028 | void *data, struct drm_file *file_priv) | |
1029 | { | |
1030 | struct drm_mode_connector_set_property *conn_set_prop = data; | |
1031 | struct drm_mode_obj_set_property obj_set_prop = { | |
1032 | .value = conn_set_prop->value, | |
1033 | .prop_id = conn_set_prop->prop_id, | |
1034 | .obj_id = conn_set_prop->connector_id, | |
1035 | .obj_type = DRM_MODE_OBJECT_CONNECTOR | |
1036 | }; | |
1037 | ||
1038 | /* It does all the locking and checking we need */ | |
1039 | return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv); | |
1040 | } | |
1041 | ||
1042 | static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector) | |
1043 | { | |
1044 | /* For atomic drivers only state objects are synchronously updated and | |
1045 | * protected by modeset locks, so check those first. */ | |
1046 | if (connector->state) | |
1047 | return connector->state->best_encoder; | |
1048 | return connector->encoder; | |
1049 | } | |
1050 | ||
1051 | static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode, | |
1052 | const struct drm_file *file_priv) | |
1053 | { | |
1054 | /* | |
1055 | * If user-space hasn't configured the driver to expose the stereo 3D | |
1056 | * modes, don't expose them. | |
1057 | */ | |
1058 | if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode)) | |
1059 | return false; | |
1060 | ||
1061 | return true; | |
1062 | } | |
1063 | ||
1064 | int drm_mode_getconnector(struct drm_device *dev, void *data, | |
1065 | struct drm_file *file_priv) | |
1066 | { | |
1067 | struct drm_mode_get_connector *out_resp = data; | |
1068 | struct drm_connector *connector; | |
1069 | struct drm_encoder *encoder; | |
1070 | struct drm_display_mode *mode; | |
1071 | int mode_count = 0; | |
1072 | int encoders_count = 0; | |
1073 | int ret = 0; | |
1074 | int copied = 0; | |
1075 | int i; | |
1076 | struct drm_mode_modeinfo u_mode; | |
1077 | struct drm_mode_modeinfo __user *mode_ptr; | |
1078 | uint32_t __user *encoder_ptr; | |
1079 | ||
1080 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
1081 | return -EINVAL; | |
1082 | ||
1083 | memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo)); | |
1084 | ||
1085 | mutex_lock(&dev->mode_config.mutex); | |
1086 | ||
1087 | connector = drm_connector_lookup(dev, out_resp->connector_id); | |
1088 | if (!connector) { | |
1089 | ret = -ENOENT; | |
1090 | goto out_unlock; | |
1091 | } | |
1092 | ||
1093 | for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) | |
1094 | if (connector->encoder_ids[i] != 0) | |
1095 | encoders_count++; | |
1096 | ||
1097 | if (out_resp->count_modes == 0) { | |
1098 | connector->funcs->fill_modes(connector, | |
1099 | dev->mode_config.max_width, | |
1100 | dev->mode_config.max_height); | |
1101 | } | |
1102 | ||
1103 | /* delayed so we get modes regardless of pre-fill_modes state */ | |
1104 | list_for_each_entry(mode, &connector->modes, head) | |
1105 | if (drm_mode_expose_to_userspace(mode, file_priv)) | |
1106 | mode_count++; | |
1107 | ||
1108 | out_resp->connector_id = connector->base.id; | |
1109 | out_resp->connector_type = connector->connector_type; | |
1110 | out_resp->connector_type_id = connector->connector_type_id; | |
1111 | out_resp->mm_width = connector->display_info.width_mm; | |
1112 | out_resp->mm_height = connector->display_info.height_mm; | |
1113 | out_resp->subpixel = connector->display_info.subpixel_order; | |
1114 | out_resp->connection = connector->status; | |
1115 | ||
1116 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); | |
1117 | encoder = drm_connector_get_encoder(connector); | |
1118 | if (encoder) | |
1119 | out_resp->encoder_id = encoder->base.id; | |
1120 | else | |
1121 | out_resp->encoder_id = 0; | |
1122 | ||
1123 | /* | |
1124 | * This ioctl is called twice, once to determine how much space is | |
1125 | * needed, and the 2nd time to fill it. | |
1126 | */ | |
1127 | if ((out_resp->count_modes >= mode_count) && mode_count) { | |
1128 | copied = 0; | |
1129 | mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr; | |
1130 | list_for_each_entry(mode, &connector->modes, head) { | |
1131 | if (!drm_mode_expose_to_userspace(mode, file_priv)) | |
1132 | continue; | |
1133 | ||
1134 | drm_mode_convert_to_umode(&u_mode, mode); | |
1135 | if (copy_to_user(mode_ptr + copied, | |
1136 | &u_mode, sizeof(u_mode))) { | |
1137 | ret = -EFAULT; | |
1138 | goto out; | |
1139 | } | |
1140 | copied++; | |
1141 | } | |
1142 | } | |
1143 | out_resp->count_modes = mode_count; | |
1144 | ||
1145 | ret = drm_mode_object_get_properties(&connector->base, file_priv->atomic, | |
1146 | (uint32_t __user *)(unsigned long)(out_resp->props_ptr), | |
1147 | (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr), | |
1148 | &out_resp->count_props); | |
1149 | if (ret) | |
1150 | goto out; | |
1151 | ||
1152 | if ((out_resp->count_encoders >= encoders_count) && encoders_count) { | |
1153 | copied = 0; | |
1154 | encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr); | |
1155 | for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { | |
1156 | if (connector->encoder_ids[i] != 0) { | |
1157 | if (put_user(connector->encoder_ids[i], | |
1158 | encoder_ptr + copied)) { | |
1159 | ret = -EFAULT; | |
1160 | goto out; | |
1161 | } | |
1162 | copied++; | |
1163 | } | |
1164 | } | |
1165 | } | |
1166 | out_resp->count_encoders = encoders_count; | |
1167 | ||
1168 | out: | |
1169 | drm_modeset_unlock(&dev->mode_config.connection_mutex); | |
1170 | ||
1171 | drm_connector_unreference(connector); | |
1172 | out_unlock: | |
1173 | mutex_unlock(&dev->mode_config.mutex); | |
1174 | ||
1175 | return ret; | |
1176 | } | |
1177 | ||
9498c19b DV |
1178 | |
1179 | /** | |
1180 | * DOC: Tile group | |
1181 | * | |
1182 | * Tile groups are used to represent tiled monitors with a unique integer | |
1183 | * identifier. Tiled monitors using DisplayID v1.3 have a unique 8-byte handle, | |
1184 | * we store this in a tile group, so we have a common identifier for all tiles | |
1185 | * in a monitor group. The property is called "TILE". Drivers can manage tile | |
1186 | * groups using drm_mode_create_tile_group(), drm_mode_put_tile_group() and | |
1187 | * drm_mode_get_tile_group(). But this is only needed for internal panels where | |
1188 | * the tile group information is exposed through a non-standard way. | |
1189 | */ | |
1190 | ||
1191 | static void drm_tile_group_free(struct kref *kref) | |
1192 | { | |
1193 | struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount); | |
1194 | struct drm_device *dev = tg->dev; | |
1195 | mutex_lock(&dev->mode_config.idr_mutex); | |
1196 | idr_remove(&dev->mode_config.tile_idr, tg->id); | |
1197 | mutex_unlock(&dev->mode_config.idr_mutex); | |
1198 | kfree(tg); | |
1199 | } | |
1200 | ||
1201 | /** | |
1202 | * drm_mode_put_tile_group - drop a reference to a tile group. | |
1203 | * @dev: DRM device | |
1204 | * @tg: tile group to drop reference to. | |
1205 | * | |
1206 | * drop reference to tile group and free if 0. | |
1207 | */ | |
1208 | void drm_mode_put_tile_group(struct drm_device *dev, | |
1209 | struct drm_tile_group *tg) | |
1210 | { | |
1211 | kref_put(&tg->refcount, drm_tile_group_free); | |
1212 | } | |
1213 | EXPORT_SYMBOL(drm_mode_put_tile_group); | |
1214 | ||
1215 | /** | |
1216 | * drm_mode_get_tile_group - get a reference to an existing tile group | |
1217 | * @dev: DRM device | |
1218 | * @topology: 8-bytes unique per monitor. | |
1219 | * | |
1220 | * Use the unique bytes to get a reference to an existing tile group. | |
1221 | * | |
1222 | * RETURNS: | |
1223 | * tile group or NULL if not found. | |
1224 | */ | |
1225 | struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev, | |
1226 | char topology[8]) | |
1227 | { | |
1228 | struct drm_tile_group *tg; | |
1229 | int id; | |
1230 | mutex_lock(&dev->mode_config.idr_mutex); | |
1231 | idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) { | |
1232 | if (!memcmp(tg->group_data, topology, 8)) { | |
1233 | if (!kref_get_unless_zero(&tg->refcount)) | |
1234 | tg = NULL; | |
1235 | mutex_unlock(&dev->mode_config.idr_mutex); | |
1236 | return tg; | |
1237 | } | |
1238 | } | |
1239 | mutex_unlock(&dev->mode_config.idr_mutex); | |
1240 | return NULL; | |
1241 | } | |
1242 | EXPORT_SYMBOL(drm_mode_get_tile_group); | |
1243 | ||
1244 | /** | |
1245 | * drm_mode_create_tile_group - create a tile group from a displayid description | |
1246 | * @dev: DRM device | |
1247 | * @topology: 8-bytes unique per monitor. | |
1248 | * | |
1249 | * Create a tile group for the unique monitor, and get a unique | |
1250 | * identifier for the tile group. | |
1251 | * | |
1252 | * RETURNS: | |
1253 | * new tile group or error. | |
1254 | */ | |
1255 | struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev, | |
1256 | char topology[8]) | |
1257 | { | |
1258 | struct drm_tile_group *tg; | |
1259 | int ret; | |
1260 | ||
1261 | tg = kzalloc(sizeof(*tg), GFP_KERNEL); | |
1262 | if (!tg) | |
1263 | return ERR_PTR(-ENOMEM); | |
1264 | ||
1265 | kref_init(&tg->refcount); | |
1266 | memcpy(tg->group_data, topology, 8); | |
1267 | tg->dev = dev; | |
1268 | ||
1269 | mutex_lock(&dev->mode_config.idr_mutex); | |
1270 | ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL); | |
1271 | if (ret >= 0) { | |
1272 | tg->id = ret; | |
1273 | } else { | |
1274 | kfree(tg); | |
1275 | tg = ERR_PTR(ret); | |
1276 | } | |
1277 | ||
1278 | mutex_unlock(&dev->mode_config.idr_mutex); | |
1279 | return tg; | |
1280 | } | |
1281 | EXPORT_SYMBOL(drm_mode_create_tile_group); |