2 * Copyright (c) 2016 Intel Corporation
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.
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
24 #include <drm/drm_connector.h>
25 #include <drm/drm_edid.h>
26 #include <drm/drm_encoder.h>
27 #include <drm/drm_utils.h>
29 #include "drm_crtc_internal.h"
30 #include "drm_internal.h"
35 * In DRM connectors are the general abstraction for display sinks, and include
36 * als fixed panels or anything else that can display pixels in some form. As
37 * opposed to all other KMS objects representing hardware (like CRTC, encoder or
38 * plane abstractions) connectors can be hotplugged and unplugged at runtime.
39 * Hence they are reference-counted using drm_connector_get() and
40 * drm_connector_put().
42 * KMS driver must create, initialize, register and attach at a &struct
43 * drm_connector for each such sink. The instance is created as other KMS
44 * objects and initialized by setting the following fields. The connector is
45 * initialized with a call to drm_connector_init() with a pointer to the
46 * &struct drm_connector_funcs and a connector type, and then exposed to
47 * userspace with a call to drm_connector_register().
49 * Connectors must be attached to an encoder to be used. For devices that map
50 * connectors to encoders 1:1, the connector should be attached at
51 * initialization time with a call to drm_connector_attach_encoder(). The
52 * driver must also set the &drm_connector.encoder field to point to the
55 * For connectors which are not fixed (like built-in panels) the driver needs to
56 * support hotplug notifications. The simplest way to do that is by using the
57 * probe helpers, see drm_kms_helper_poll_init() for connectors which don't have
58 * hardware support for hotplug interrupts. Connectors with hardware hotplug
59 * support can instead use e.g. drm_helper_hpd_irq_event().
62 struct drm_conn_prop_enum_list
{
69 * Connector and encoder types.
71 static struct drm_conn_prop_enum_list drm_connector_enum_list
[] = {
72 { DRM_MODE_CONNECTOR_Unknown
, "Unknown" },
73 { DRM_MODE_CONNECTOR_VGA
, "VGA" },
74 { DRM_MODE_CONNECTOR_DVII
, "DVI-I" },
75 { DRM_MODE_CONNECTOR_DVID
, "DVI-D" },
76 { DRM_MODE_CONNECTOR_DVIA
, "DVI-A" },
77 { DRM_MODE_CONNECTOR_Composite
, "Composite" },
78 { DRM_MODE_CONNECTOR_SVIDEO
, "SVIDEO" },
79 { DRM_MODE_CONNECTOR_LVDS
, "LVDS" },
80 { DRM_MODE_CONNECTOR_Component
, "Component" },
81 { DRM_MODE_CONNECTOR_9PinDIN
, "DIN" },
82 { DRM_MODE_CONNECTOR_DisplayPort
, "DP" },
83 { DRM_MODE_CONNECTOR_HDMIA
, "HDMI-A" },
84 { DRM_MODE_CONNECTOR_HDMIB
, "HDMI-B" },
85 { DRM_MODE_CONNECTOR_TV
, "TV" },
86 { DRM_MODE_CONNECTOR_eDP
, "eDP" },
87 { DRM_MODE_CONNECTOR_VIRTUAL
, "Virtual" },
88 { DRM_MODE_CONNECTOR_DSI
, "DSI" },
89 { DRM_MODE_CONNECTOR_DPI
, "DPI" },
90 { DRM_MODE_CONNECTOR_WRITEBACK
, "Writeback" },
93 void drm_connector_ida_init(void)
97 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
98 ida_init(&drm_connector_enum_list
[i
].ida
);
101 void drm_connector_ida_destroy(void)
105 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
106 ida_destroy(&drm_connector_enum_list
[i
].ida
);
110 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
111 * @connector: connector to quwery
113 * The kernel supports per-connector configuration of its consoles through
114 * use of the video= parameter. This function parses that option and
115 * extracts the user's specified mode (or enable/disable status) for a
116 * particular connector. This is typically only used during the early fbdev
119 static void drm_connector_get_cmdline_mode(struct drm_connector
*connector
)
121 struct drm_cmdline_mode
*mode
= &connector
->cmdline_mode
;
124 if (fb_get_options(connector
->name
, &option
))
127 if (!drm_mode_parse_command_line_for_connector(option
,
133 DRM_INFO("forcing %s connector %s\n", connector
->name
,
134 drm_get_connector_force_name(mode
->force
));
135 connector
->force
= mode
->force
;
138 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
140 mode
->xres
, mode
->yres
,
141 mode
->refresh_specified
? mode
->refresh
: 60,
142 mode
->rb
? " reduced blanking" : "",
143 mode
->margins
? " with margins" : "",
144 mode
->interlace
? " interlaced" : "");
147 static void drm_connector_free(struct kref
*kref
)
149 struct drm_connector
*connector
=
150 container_of(kref
, struct drm_connector
, base
.refcount
);
151 struct drm_device
*dev
= connector
->dev
;
153 drm_mode_object_unregister(dev
, &connector
->base
);
154 connector
->funcs
->destroy(connector
);
157 void drm_connector_free_work_fn(struct work_struct
*work
)
159 struct drm_connector
*connector
, *n
;
160 struct drm_device
*dev
=
161 container_of(work
, struct drm_device
, mode_config
.connector_free_work
);
162 struct drm_mode_config
*config
= &dev
->mode_config
;
164 struct llist_node
*freed
;
166 spin_lock_irqsave(&config
->connector_list_lock
, flags
);
167 freed
= llist_del_all(&config
->connector_free_list
);
168 spin_unlock_irqrestore(&config
->connector_list_lock
, flags
);
170 llist_for_each_entry_safe(connector
, n
, freed
, free_node
) {
171 drm_mode_object_unregister(dev
, &connector
->base
);
172 connector
->funcs
->destroy(connector
);
177 * drm_connector_init - Init a preallocated connector
179 * @connector: the connector to init
180 * @funcs: callbacks for this connector
181 * @connector_type: user visible type of the connector
183 * Initialises a preallocated connector. Connectors should be
184 * subclassed as part of driver connector objects.
187 * Zero on success, error code on failure.
189 int drm_connector_init(struct drm_device
*dev
,
190 struct drm_connector
*connector
,
191 const struct drm_connector_funcs
*funcs
,
194 struct drm_mode_config
*config
= &dev
->mode_config
;
196 struct ida
*connector_ida
=
197 &drm_connector_enum_list
[connector_type
].ida
;
199 WARN_ON(drm_drv_uses_atomic_modeset(dev
) &&
200 (!funcs
->atomic_destroy_state
||
201 !funcs
->atomic_duplicate_state
));
203 ret
= __drm_mode_object_add(dev
, &connector
->base
,
204 DRM_MODE_OBJECT_CONNECTOR
,
205 false, drm_connector_free
);
209 connector
->base
.properties
= &connector
->properties
;
210 connector
->dev
= dev
;
211 connector
->funcs
= funcs
;
213 /* connector index is used with 32bit bitmasks */
214 ret
= ida_simple_get(&config
->connector_ida
, 0, 32, GFP_KERNEL
);
216 DRM_DEBUG_KMS("Failed to allocate %s connector index: %d\n",
217 drm_connector_enum_list
[connector_type
].name
,
221 connector
->index
= ret
;
224 connector
->connector_type
= connector_type
;
225 connector
->connector_type_id
=
226 ida_simple_get(connector_ida
, 1, 0, GFP_KERNEL
);
227 if (connector
->connector_type_id
< 0) {
228 ret
= connector
->connector_type_id
;
232 kasprintf(GFP_KERNEL
, "%s-%d",
233 drm_connector_enum_list
[connector_type
].name
,
234 connector
->connector_type_id
);
235 if (!connector
->name
) {
237 goto out_put_type_id
;
240 INIT_LIST_HEAD(&connector
->probed_modes
);
241 INIT_LIST_HEAD(&connector
->modes
);
242 mutex_init(&connector
->mutex
);
243 connector
->edid_blob_ptr
= NULL
;
244 connector
->status
= connector_status_unknown
;
245 connector
->display_info
.panel_orientation
=
246 DRM_MODE_PANEL_ORIENTATION_UNKNOWN
;
248 drm_connector_get_cmdline_mode(connector
);
250 /* We should add connectors at the end to avoid upsetting the connector
252 spin_lock_irq(&config
->connector_list_lock
);
253 list_add_tail(&connector
->head
, &config
->connector_list
);
254 config
->num_connector
++;
255 spin_unlock_irq(&config
->connector_list_lock
);
257 if (connector_type
!= DRM_MODE_CONNECTOR_VIRTUAL
&&
258 connector_type
!= DRM_MODE_CONNECTOR_WRITEBACK
)
259 drm_object_attach_property(&connector
->base
,
260 config
->edid_property
,
263 drm_object_attach_property(&connector
->base
,
264 config
->dpms_property
, 0);
266 drm_object_attach_property(&connector
->base
,
267 config
->link_status_property
,
270 drm_object_attach_property(&connector
->base
,
271 config
->non_desktop_property
,
274 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
275 drm_object_attach_property(&connector
->base
, config
->prop_crtc_id
, 0);
278 connector
->debugfs_entry
= NULL
;
281 ida_simple_remove(connector_ida
, connector
->connector_type_id
);
284 ida_simple_remove(&config
->connector_ida
, connector
->index
);
287 drm_mode_object_unregister(dev
, &connector
->base
);
291 EXPORT_SYMBOL(drm_connector_init
);
294 * drm_connector_attach_encoder - attach a connector to an encoder
295 * @connector: connector to attach
296 * @encoder: encoder to attach @connector to
298 * This function links up a connector to an encoder. Note that the routing
299 * restrictions between encoders and crtcs are exposed to userspace through the
300 * possible_clones and possible_crtcs bitmasks.
303 * Zero on success, negative errno on failure.
305 int drm_connector_attach_encoder(struct drm_connector
*connector
,
306 struct drm_encoder
*encoder
)
311 * In the past, drivers have attempted to model the static association
312 * of connector to encoder in simple connector/encoder devices using a
313 * direct assignment of connector->encoder = encoder. This connection
314 * is a logical one and the responsibility of the core, so drivers are
315 * expected not to mess with this.
317 * Note that the error return should've been enough here, but a large
318 * majority of drivers ignores the return value, so add in a big WARN
319 * to get people's attention.
321 if (WARN_ON(connector
->encoder
))
324 for (i
= 0; i
< ARRAY_SIZE(connector
->encoder_ids
); i
++) {
325 if (connector
->encoder_ids
[i
] == 0) {
326 connector
->encoder_ids
[i
] = encoder
->base
.id
;
332 EXPORT_SYMBOL(drm_connector_attach_encoder
);
335 * drm_connector_has_possible_encoder - check if the connector and encoder are assosicated with each other
336 * @connector: the connector
337 * @encoder: the encoder
340 * True if @encoder is one of the possible encoders for @connector.
342 bool drm_connector_has_possible_encoder(struct drm_connector
*connector
,
343 struct drm_encoder
*encoder
)
345 struct drm_encoder
*enc
;
348 drm_connector_for_each_possible_encoder(connector
, enc
, i
) {
355 EXPORT_SYMBOL(drm_connector_has_possible_encoder
);
357 static void drm_mode_remove(struct drm_connector
*connector
,
358 struct drm_display_mode
*mode
)
360 list_del(&mode
->head
);
361 drm_mode_destroy(connector
->dev
, mode
);
365 * drm_connector_cleanup - cleans up an initialised connector
366 * @connector: connector to cleanup
368 * Cleans up the connector but doesn't free the object.
370 void drm_connector_cleanup(struct drm_connector
*connector
)
372 struct drm_device
*dev
= connector
->dev
;
373 struct drm_display_mode
*mode
, *t
;
375 /* The connector should have been removed from userspace long before
376 * it is finally destroyed.
378 if (WARN_ON(connector
->registered
))
379 drm_connector_unregister(connector
);
381 if (connector
->tile_group
) {
382 drm_mode_put_tile_group(dev
, connector
->tile_group
);
383 connector
->tile_group
= NULL
;
386 list_for_each_entry_safe(mode
, t
, &connector
->probed_modes
, head
)
387 drm_mode_remove(connector
, mode
);
389 list_for_each_entry_safe(mode
, t
, &connector
->modes
, head
)
390 drm_mode_remove(connector
, mode
);
392 ida_simple_remove(&drm_connector_enum_list
[connector
->connector_type
].ida
,
393 connector
->connector_type_id
);
395 ida_simple_remove(&dev
->mode_config
.connector_ida
,
398 kfree(connector
->display_info
.bus_formats
);
399 drm_mode_object_unregister(dev
, &connector
->base
);
400 kfree(connector
->name
);
401 connector
->name
= NULL
;
402 spin_lock_irq(&dev
->mode_config
.connector_list_lock
);
403 list_del(&connector
->head
);
404 dev
->mode_config
.num_connector
--;
405 spin_unlock_irq(&dev
->mode_config
.connector_list_lock
);
407 WARN_ON(connector
->state
&& !connector
->funcs
->atomic_destroy_state
);
408 if (connector
->state
&& connector
->funcs
->atomic_destroy_state
)
409 connector
->funcs
->atomic_destroy_state(connector
,
412 mutex_destroy(&connector
->mutex
);
414 memset(connector
, 0, sizeof(*connector
));
416 EXPORT_SYMBOL(drm_connector_cleanup
);
419 * drm_connector_register - register a connector
420 * @connector: the connector to register
422 * Register userspace interfaces for a connector
425 * Zero on success, error code on failure.
427 int drm_connector_register(struct drm_connector
*connector
)
431 if (!connector
->dev
->registered
)
434 mutex_lock(&connector
->mutex
);
435 if (connector
->registered
)
438 ret
= drm_sysfs_connector_add(connector
);
442 ret
= drm_debugfs_connector_add(connector
);
447 if (connector
->funcs
->late_register
) {
448 ret
= connector
->funcs
->late_register(connector
);
453 drm_mode_object_register(connector
->dev
, &connector
->base
);
455 connector
->registered
= true;
459 drm_debugfs_connector_remove(connector
);
461 drm_sysfs_connector_remove(connector
);
463 mutex_unlock(&connector
->mutex
);
466 EXPORT_SYMBOL(drm_connector_register
);
469 * drm_connector_unregister - unregister a connector
470 * @connector: the connector to unregister
472 * Unregister userspace interfaces for a connector
474 void drm_connector_unregister(struct drm_connector
*connector
)
476 mutex_lock(&connector
->mutex
);
477 if (!connector
->registered
) {
478 mutex_unlock(&connector
->mutex
);
482 if (connector
->funcs
->early_unregister
)
483 connector
->funcs
->early_unregister(connector
);
485 drm_sysfs_connector_remove(connector
);
486 drm_debugfs_connector_remove(connector
);
488 connector
->registered
= false;
489 mutex_unlock(&connector
->mutex
);
491 EXPORT_SYMBOL(drm_connector_unregister
);
493 void drm_connector_unregister_all(struct drm_device
*dev
)
495 struct drm_connector
*connector
;
496 struct drm_connector_list_iter conn_iter
;
498 drm_connector_list_iter_begin(dev
, &conn_iter
);
499 drm_for_each_connector_iter(connector
, &conn_iter
)
500 drm_connector_unregister(connector
);
501 drm_connector_list_iter_end(&conn_iter
);
504 int drm_connector_register_all(struct drm_device
*dev
)
506 struct drm_connector
*connector
;
507 struct drm_connector_list_iter conn_iter
;
510 drm_connector_list_iter_begin(dev
, &conn_iter
);
511 drm_for_each_connector_iter(connector
, &conn_iter
) {
512 ret
= drm_connector_register(connector
);
516 drm_connector_list_iter_end(&conn_iter
);
519 drm_connector_unregister_all(dev
);
524 * drm_get_connector_status_name - return a string for connector status
525 * @status: connector status to compute name of
527 * In contrast to the other drm_get_*_name functions this one here returns a
528 * const pointer and hence is threadsafe.
530 const char *drm_get_connector_status_name(enum drm_connector_status status
)
532 if (status
== connector_status_connected
)
534 else if (status
== connector_status_disconnected
)
535 return "disconnected";
539 EXPORT_SYMBOL(drm_get_connector_status_name
);
542 * drm_get_connector_force_name - return a string for connector force
543 * @force: connector force to get name of
545 * Returns: const pointer to name.
547 const char *drm_get_connector_force_name(enum drm_connector_force force
)
550 case DRM_FORCE_UNSPECIFIED
:
551 return "unspecified";
556 case DRM_FORCE_ON_DIGITAL
:
563 #ifdef CONFIG_LOCKDEP
564 static struct lockdep_map connector_list_iter_dep_map
= {
565 .name
= "drm_connector_list_iter"
570 * drm_connector_list_iter_begin - initialize a connector_list iterator
572 * @iter: connector_list iterator
574 * Sets @iter up to walk the &drm_mode_config.connector_list of @dev. @iter
575 * must always be cleaned up again by calling drm_connector_list_iter_end().
576 * Iteration itself happens using drm_connector_list_iter_next() or
577 * drm_for_each_connector_iter().
579 void drm_connector_list_iter_begin(struct drm_device
*dev
,
580 struct drm_connector_list_iter
*iter
)
584 lock_acquire_shared_recursive(&connector_list_iter_dep_map
, 0, 1, NULL
, _RET_IP_
);
586 EXPORT_SYMBOL(drm_connector_list_iter_begin
);
589 * Extra-safe connector put function that works in any context. Should only be
590 * used from the connector_iter functions, where we never really expect to
591 * actually release the connector when dropping our final reference.
594 __drm_connector_put_safe(struct drm_connector
*conn
)
596 struct drm_mode_config
*config
= &conn
->dev
->mode_config
;
598 lockdep_assert_held(&config
->connector_list_lock
);
600 if (!refcount_dec_and_test(&conn
->base
.refcount
.refcount
))
603 llist_add(&conn
->free_node
, &config
->connector_free_list
);
604 schedule_work(&config
->connector_free_work
);
608 * drm_connector_list_iter_next - return next connector
609 * @iter: connector_list iterator
611 * Returns the next connector for @iter, or NULL when the list walk has
614 struct drm_connector
*
615 drm_connector_list_iter_next(struct drm_connector_list_iter
*iter
)
617 struct drm_connector
*old_conn
= iter
->conn
;
618 struct drm_mode_config
*config
= &iter
->dev
->mode_config
;
619 struct list_head
*lhead
;
622 spin_lock_irqsave(&config
->connector_list_lock
, flags
);
623 lhead
= old_conn
? &old_conn
->head
: &config
->connector_list
;
626 if (lhead
->next
== &config
->connector_list
) {
632 iter
->conn
= list_entry(lhead
, struct drm_connector
, head
);
634 /* loop until it's not a zombie connector */
635 } while (!kref_get_unless_zero(&iter
->conn
->base
.refcount
));
638 __drm_connector_put_safe(old_conn
);
639 spin_unlock_irqrestore(&config
->connector_list_lock
, flags
);
643 EXPORT_SYMBOL(drm_connector_list_iter_next
);
646 * drm_connector_list_iter_end - tear down a connector_list iterator
647 * @iter: connector_list iterator
649 * Tears down @iter and releases any resources (like &drm_connector references)
650 * acquired while walking the list. This must always be called, both when the
651 * iteration completes fully or when it was aborted without walking the entire
654 void drm_connector_list_iter_end(struct drm_connector_list_iter
*iter
)
656 struct drm_mode_config
*config
= &iter
->dev
->mode_config
;
661 spin_lock_irqsave(&config
->connector_list_lock
, flags
);
662 __drm_connector_put_safe(iter
->conn
);
663 spin_unlock_irqrestore(&config
->connector_list_lock
, flags
);
665 lock_release(&connector_list_iter_dep_map
, 0, _RET_IP_
);
667 EXPORT_SYMBOL(drm_connector_list_iter_end
);
669 static const struct drm_prop_enum_list drm_subpixel_enum_list
[] = {
670 { SubPixelUnknown
, "Unknown" },
671 { SubPixelHorizontalRGB
, "Horizontal RGB" },
672 { SubPixelHorizontalBGR
, "Horizontal BGR" },
673 { SubPixelVerticalRGB
, "Vertical RGB" },
674 { SubPixelVerticalBGR
, "Vertical BGR" },
675 { SubPixelNone
, "None" },
679 * drm_get_subpixel_order_name - return a string for a given subpixel enum
680 * @order: enum of subpixel_order
682 * Note you could abuse this and return something out of bounds, but that
683 * would be a caller error. No unscrubbed user data should make it here.
685 const char *drm_get_subpixel_order_name(enum subpixel_order order
)
687 return drm_subpixel_enum_list
[order
].name
;
689 EXPORT_SYMBOL(drm_get_subpixel_order_name
);
691 static const struct drm_prop_enum_list drm_dpms_enum_list
[] = {
692 { DRM_MODE_DPMS_ON
, "On" },
693 { DRM_MODE_DPMS_STANDBY
, "Standby" },
694 { DRM_MODE_DPMS_SUSPEND
, "Suspend" },
695 { DRM_MODE_DPMS_OFF
, "Off" }
697 DRM_ENUM_NAME_FN(drm_get_dpms_name
, drm_dpms_enum_list
)
699 static const struct drm_prop_enum_list drm_link_status_enum_list
[] = {
700 { DRM_MODE_LINK_STATUS_GOOD
, "Good" },
701 { DRM_MODE_LINK_STATUS_BAD
, "Bad" },
705 * drm_display_info_set_bus_formats - set the supported bus formats
706 * @info: display info to store bus formats in
707 * @formats: array containing the supported bus formats
708 * @num_formats: the number of entries in the fmts array
710 * Store the supported bus formats in display info structure.
711 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
712 * a full list of available formats.
714 int drm_display_info_set_bus_formats(struct drm_display_info
*info
,
716 unsigned int num_formats
)
720 if (!formats
&& num_formats
)
723 if (formats
&& num_formats
) {
724 fmts
= kmemdup(formats
, sizeof(*formats
) * num_formats
,
730 kfree(info
->bus_formats
);
731 info
->bus_formats
= fmts
;
732 info
->num_bus_formats
= num_formats
;
736 EXPORT_SYMBOL(drm_display_info_set_bus_formats
);
738 /* Optional connector properties. */
739 static const struct drm_prop_enum_list drm_scaling_mode_enum_list
[] = {
740 { DRM_MODE_SCALE_NONE
, "None" },
741 { DRM_MODE_SCALE_FULLSCREEN
, "Full" },
742 { DRM_MODE_SCALE_CENTER
, "Center" },
743 { DRM_MODE_SCALE_ASPECT
, "Full aspect" },
746 static const struct drm_prop_enum_list drm_aspect_ratio_enum_list
[] = {
747 { DRM_MODE_PICTURE_ASPECT_NONE
, "Automatic" },
748 { DRM_MODE_PICTURE_ASPECT_4_3
, "4:3" },
749 { DRM_MODE_PICTURE_ASPECT_16_9
, "16:9" },
752 static const struct drm_prop_enum_list drm_content_type_enum_list
[] = {
753 { DRM_MODE_CONTENT_TYPE_NO_DATA
, "No Data" },
754 { DRM_MODE_CONTENT_TYPE_GRAPHICS
, "Graphics" },
755 { DRM_MODE_CONTENT_TYPE_PHOTO
, "Photo" },
756 { DRM_MODE_CONTENT_TYPE_CINEMA
, "Cinema" },
757 { DRM_MODE_CONTENT_TYPE_GAME
, "Game" },
760 static const struct drm_prop_enum_list drm_panel_orientation_enum_list
[] = {
761 { DRM_MODE_PANEL_ORIENTATION_NORMAL
, "Normal" },
762 { DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP
, "Upside Down" },
763 { DRM_MODE_PANEL_ORIENTATION_LEFT_UP
, "Left Side Up" },
764 { DRM_MODE_PANEL_ORIENTATION_RIGHT_UP
, "Right Side Up" },
767 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list
[] = {
768 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
769 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
770 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
772 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name
, drm_dvi_i_select_enum_list
)
774 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list
[] = {
775 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
776 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
777 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
779 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name
,
780 drm_dvi_i_subconnector_enum_list
)
782 static const struct drm_prop_enum_list drm_tv_select_enum_list
[] = {
783 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
784 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
785 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
786 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
787 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
789 DRM_ENUM_NAME_FN(drm_get_tv_select_name
, drm_tv_select_enum_list
)
791 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list
[] = {
792 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
793 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
794 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
795 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
796 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
798 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name
,
799 drm_tv_subconnector_enum_list
)
801 static struct drm_prop_enum_list drm_cp_enum_list
[] = {
802 { DRM_MODE_CONTENT_PROTECTION_UNDESIRED
, "Undesired" },
803 { DRM_MODE_CONTENT_PROTECTION_DESIRED
, "Desired" },
804 { DRM_MODE_CONTENT_PROTECTION_ENABLED
, "Enabled" },
806 DRM_ENUM_NAME_FN(drm_get_content_protection_name
, drm_cp_enum_list
)
809 * DOC: standard connector properties
811 * DRM connectors have a few standardized properties:
814 * Blob property which contains the current EDID read from the sink. This
815 * is useful to parse sink identification information like vendor, model
816 * and serial. Drivers should update this property by calling
817 * drm_connector_update_edid_property(), usually after having parsed
818 * the EDID using drm_add_edid_modes(). Userspace cannot change this
821 * Legacy property for setting the power state of the connector. For atomic
822 * drivers this is only provided for backwards compatibility with existing
823 * drivers, it remaps to controlling the "ACTIVE" property on the CRTC the
824 * connector is linked to. Drivers should never set this property directly,
825 * it is handled by the DRM core by calling the &drm_connector_funcs.dpms
826 * callback. For atomic drivers the remapping to the "ACTIVE" property is
827 * implemented in the DRM core. This is the only standard connector
828 * property that userspace can change.
830 * Note that this property cannot be set through the MODE_ATOMIC ioctl,
831 * userspace must use "ACTIVE" on the CRTC instead.
835 * For userspace also running on legacy drivers the "DPMS" semantics are a
836 * lot more complicated. First, userspace cannot rely on the "DPMS" value
837 * returned by the GETCONNECTOR actually reflecting reality, because many
838 * drivers fail to update it. For atomic drivers this is taken care of in
839 * drm_atomic_helper_update_legacy_modeset_state().
841 * The second issue is that the DPMS state is only well-defined when the
842 * connector is connected to a CRTC. In atomic the DRM core enforces that
843 * "ACTIVE" is off in such a case, no such checks exists for "DPMS".
845 * Finally, when enabling an output using the legacy SETCONFIG ioctl then
846 * "DPMS" is forced to ON. But see above, that might not be reflected in
847 * the software value on legacy drivers.
849 * Summarizing: Only set "DPMS" when the connector is known to be enabled,
850 * assume that a successful SETCONFIG call also sets "DPMS" to on, and
851 * never read back the value of "DPMS" because it can be incorrect.
853 * Connector path property to identify how this sink is physically
854 * connected. Used by DP MST. This should be set by calling
855 * drm_connector_set_path_property(), in the case of DP MST with the
856 * path property the MST manager created. Userspace cannot change this
859 * Connector tile group property to indicate how a set of DRM connector
860 * compose together into one logical screen. This is used by both high-res
861 * external screens (often only using a single cable, but exposing multiple
862 * DP MST sinks), or high-res integrated panels (like dual-link DSI) which
863 * are not gen-locked. Note that for tiled panels which are genlocked, like
864 * dual-link LVDS or dual-link DSI, the driver should try to not expose the
865 * tiling and virtualize both &drm_crtc and &drm_plane if needed. Drivers
866 * should update this value using drm_connector_set_tile_property().
867 * Userspace cannot change this property.
869 * Connector link-status property to indicate the status of link. The
870 * default value of link-status is "GOOD". If something fails during or
871 * after modeset, the kernel driver may set this to "BAD" and issue a
872 * hotplug uevent. Drivers should update this value using
873 * drm_connector_set_link_status_property().
875 * Indicates the output should be ignored for purposes of displaying a
876 * standard desktop environment or console. This is most likely because
877 * the output device is not rectilinear.
878 * Content Protection:
879 * This property is used by userspace to request the kernel protect future
880 * content communicated over the link. When requested, kernel will apply
881 * the appropriate means of protection (most often HDCP), and use the
882 * property to tell userspace the protection is active.
884 * Drivers can set this up by calling
885 * drm_connector_attach_content_protection_property() on initialization.
887 * The value of this property can be one of the following:
889 * DRM_MODE_CONTENT_PROTECTION_UNDESIRED = 0
890 * The link is not protected, content is transmitted in the clear.
891 * DRM_MODE_CONTENT_PROTECTION_DESIRED = 1
892 * Userspace has requested content protection, but the link is not
893 * currently protected. When in this state, kernel should enable
894 * Content Protection as soon as possible.
895 * DRM_MODE_CONTENT_PROTECTION_ENABLED = 2
896 * Userspace has requested content protection, and the link is
897 * protected. Only the driver can set the property to this value.
898 * If userspace attempts to set to ENABLED, kernel will return
903 * - DESIRED state should be preserved until userspace de-asserts it by
904 * setting the property to UNDESIRED. This means ENABLED should only
905 * transition to UNDESIRED when the user explicitly requests it.
906 * - If the state is DESIRED, kernel should attempt to re-authenticate the
907 * link whenever possible. This includes across disable/enable, dpms,
908 * hotplug, downstream device changes, link status failures, etc..
909 * - Userspace is responsible for polling the property to determine when
910 * the value transitions from ENABLED to DESIRED. This signifies the link
911 * is no longer protected and userspace should take appropriate action
912 * (whatever that might be).
914 * Connectors also have one standardized atomic property:
917 * Mode object ID of the &drm_crtc this connector should be connected to.
919 * Connectors for LCD panels may also have one standardized property:
922 * On some devices the LCD panel is mounted in the casing in such a way
923 * that the up/top side of the panel does not match with the top side of
924 * the device. Userspace can use this property to check for this.
925 * Note that input coordinates from touchscreens (input devices with
926 * INPUT_PROP_DIRECT) will still map 1:1 to the actual LCD panel
927 * coordinates, so if userspace rotates the picture to adjust for
928 * the orientation it must also apply the same transformation to the
929 * touchscreen input coordinates. This property is initialized by calling
930 * drm_connector_init_panel_orientation_property().
933 * This property defines how a non-native mode is upscaled to the native
934 * mode of an LCD panel:
937 * No upscaling happens, scaling is left to the panel. Not all
938 * drivers expose this mode.
940 * The output is upscaled to the full resolution of the panel,
941 * ignoring the aspect ratio.
943 * No upscaling happens, the output is centered within the native
944 * resolution the panel.
946 * The output is upscaled to maximize either the width or height
947 * while retaining the aspect ratio.
949 * This property should be set up by calling
950 * drm_connector_attach_scaling_mode_property(). Note that drivers
951 * can also expose this property to external outputs, in which case they
952 * must support "None", which should be the default (since external screens
953 * have a built-in scaler).
956 int drm_connector_create_standard_properties(struct drm_device
*dev
)
958 struct drm_property
*prop
;
960 prop
= drm_property_create(dev
, DRM_MODE_PROP_BLOB
|
961 DRM_MODE_PROP_IMMUTABLE
,
965 dev
->mode_config
.edid_property
= prop
;
967 prop
= drm_property_create_enum(dev
, 0,
968 "DPMS", drm_dpms_enum_list
,
969 ARRAY_SIZE(drm_dpms_enum_list
));
972 dev
->mode_config
.dpms_property
= prop
;
974 prop
= drm_property_create(dev
,
976 DRM_MODE_PROP_IMMUTABLE
,
980 dev
->mode_config
.path_property
= prop
;
982 prop
= drm_property_create(dev
,
984 DRM_MODE_PROP_IMMUTABLE
,
988 dev
->mode_config
.tile_property
= prop
;
990 prop
= drm_property_create_enum(dev
, 0, "link-status",
991 drm_link_status_enum_list
,
992 ARRAY_SIZE(drm_link_status_enum_list
));
995 dev
->mode_config
.link_status_property
= prop
;
997 prop
= drm_property_create_bool(dev
, DRM_MODE_PROP_IMMUTABLE
, "non-desktop");
1000 dev
->mode_config
.non_desktop_property
= prop
;
1006 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1009 * Called by a driver the first time a DVI-I connector is made.
1011 int drm_mode_create_dvi_i_properties(struct drm_device
*dev
)
1013 struct drm_property
*dvi_i_selector
;
1014 struct drm_property
*dvi_i_subconnector
;
1016 if (dev
->mode_config
.dvi_i_select_subconnector_property
)
1020 drm_property_create_enum(dev
, 0,
1021 "select subconnector",
1022 drm_dvi_i_select_enum_list
,
1023 ARRAY_SIZE(drm_dvi_i_select_enum_list
));
1024 dev
->mode_config
.dvi_i_select_subconnector_property
= dvi_i_selector
;
1026 dvi_i_subconnector
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1028 drm_dvi_i_subconnector_enum_list
,
1029 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list
));
1030 dev
->mode_config
.dvi_i_subconnector_property
= dvi_i_subconnector
;
1034 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties
);
1037 * DOC: HDMI connector properties
1039 * content type (HDMI specific):
1040 * Indicates content type setting to be used in HDMI infoframes to indicate
1041 * content type for the external device, so that it adjusts it's display
1042 * settings accordingly.
1044 * The value of this property can be one of the following:
1047 * Content type is unknown
1049 * Content type is graphics
1051 * Content type is photo
1053 * Content type is cinema
1055 * Content type is game
1057 * Drivers can set up this property by calling
1058 * drm_connector_attach_content_type_property(). Decoding to
1059 * infoframe values is done through drm_hdmi_avi_infoframe_content_type().
1063 * drm_connector_attach_content_type_property - attach content-type property
1064 * @connector: connector to attach content type property on.
1066 * Called by a driver the first time a HDMI connector is made.
1068 int drm_connector_attach_content_type_property(struct drm_connector
*connector
)
1070 if (!drm_mode_create_content_type_property(connector
->dev
))
1071 drm_object_attach_property(&connector
->base
,
1072 connector
->dev
->mode_config
.content_type_property
,
1073 DRM_MODE_CONTENT_TYPE_NO_DATA
);
1076 EXPORT_SYMBOL(drm_connector_attach_content_type_property
);
1080 * drm_hdmi_avi_infoframe_content_type() - fill the HDMI AVI infoframe
1081 * content type information, based
1082 * on correspondent DRM property.
1083 * @frame: HDMI AVI infoframe
1084 * @conn_state: DRM display connector state
1087 void drm_hdmi_avi_infoframe_content_type(struct hdmi_avi_infoframe
*frame
,
1088 const struct drm_connector_state
*conn_state
)
1090 switch (conn_state
->content_type
) {
1091 case DRM_MODE_CONTENT_TYPE_GRAPHICS
:
1092 frame
->content_type
= HDMI_CONTENT_TYPE_GRAPHICS
;
1094 case DRM_MODE_CONTENT_TYPE_CINEMA
:
1095 frame
->content_type
= HDMI_CONTENT_TYPE_CINEMA
;
1097 case DRM_MODE_CONTENT_TYPE_GAME
:
1098 frame
->content_type
= HDMI_CONTENT_TYPE_GAME
;
1100 case DRM_MODE_CONTENT_TYPE_PHOTO
:
1101 frame
->content_type
= HDMI_CONTENT_TYPE_PHOTO
;
1104 /* Graphics is the default(0) */
1105 frame
->content_type
= HDMI_CONTENT_TYPE_GRAPHICS
;
1108 frame
->itc
= conn_state
->content_type
!= DRM_MODE_CONTENT_TYPE_NO_DATA
;
1110 EXPORT_SYMBOL(drm_hdmi_avi_infoframe_content_type
);
1113 * drm_create_tv_properties - create TV specific connector properties
1115 * @num_modes: number of different TV formats (modes) supported
1116 * @modes: array of pointers to strings containing name of each format
1118 * Called by a driver's TV initialization routine, this function creates
1119 * the TV specific connector properties for a given device. Caller is
1120 * responsible for allocating a list of format names and passing them to
1123 int drm_mode_create_tv_properties(struct drm_device
*dev
,
1124 unsigned int num_modes
,
1125 const char * const modes
[])
1127 struct drm_property
*tv_selector
;
1128 struct drm_property
*tv_subconnector
;
1131 if (dev
->mode_config
.tv_select_subconnector_property
)
1135 * Basic connector properties
1137 tv_selector
= drm_property_create_enum(dev
, 0,
1138 "select subconnector",
1139 drm_tv_select_enum_list
,
1140 ARRAY_SIZE(drm_tv_select_enum_list
));
1144 dev
->mode_config
.tv_select_subconnector_property
= tv_selector
;
1147 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1149 drm_tv_subconnector_enum_list
,
1150 ARRAY_SIZE(drm_tv_subconnector_enum_list
));
1151 if (!tv_subconnector
)
1153 dev
->mode_config
.tv_subconnector_property
= tv_subconnector
;
1156 * Other, TV specific properties: margins & TV modes.
1158 dev
->mode_config
.tv_left_margin_property
=
1159 drm_property_create_range(dev
, 0, "left margin", 0, 100);
1160 if (!dev
->mode_config
.tv_left_margin_property
)
1163 dev
->mode_config
.tv_right_margin_property
=
1164 drm_property_create_range(dev
, 0, "right margin", 0, 100);
1165 if (!dev
->mode_config
.tv_right_margin_property
)
1168 dev
->mode_config
.tv_top_margin_property
=
1169 drm_property_create_range(dev
, 0, "top margin", 0, 100);
1170 if (!dev
->mode_config
.tv_top_margin_property
)
1173 dev
->mode_config
.tv_bottom_margin_property
=
1174 drm_property_create_range(dev
, 0, "bottom margin", 0, 100);
1175 if (!dev
->mode_config
.tv_bottom_margin_property
)
1178 dev
->mode_config
.tv_mode_property
=
1179 drm_property_create(dev
, DRM_MODE_PROP_ENUM
,
1181 if (!dev
->mode_config
.tv_mode_property
)
1184 for (i
= 0; i
< num_modes
; i
++)
1185 drm_property_add_enum(dev
->mode_config
.tv_mode_property
,
1188 dev
->mode_config
.tv_brightness_property
=
1189 drm_property_create_range(dev
, 0, "brightness", 0, 100);
1190 if (!dev
->mode_config
.tv_brightness_property
)
1193 dev
->mode_config
.tv_contrast_property
=
1194 drm_property_create_range(dev
, 0, "contrast", 0, 100);
1195 if (!dev
->mode_config
.tv_contrast_property
)
1198 dev
->mode_config
.tv_flicker_reduction_property
=
1199 drm_property_create_range(dev
, 0, "flicker reduction", 0, 100);
1200 if (!dev
->mode_config
.tv_flicker_reduction_property
)
1203 dev
->mode_config
.tv_overscan_property
=
1204 drm_property_create_range(dev
, 0, "overscan", 0, 100);
1205 if (!dev
->mode_config
.tv_overscan_property
)
1208 dev
->mode_config
.tv_saturation_property
=
1209 drm_property_create_range(dev
, 0, "saturation", 0, 100);
1210 if (!dev
->mode_config
.tv_saturation_property
)
1213 dev
->mode_config
.tv_hue_property
=
1214 drm_property_create_range(dev
, 0, "hue", 0, 100);
1215 if (!dev
->mode_config
.tv_hue_property
)
1222 EXPORT_SYMBOL(drm_mode_create_tv_properties
);
1225 * drm_mode_create_scaling_mode_property - create scaling mode property
1228 * Called by a driver the first time it's needed, must be attached to desired
1231 * Atomic drivers should use drm_connector_attach_scaling_mode_property()
1232 * instead to correctly assign &drm_connector_state.picture_aspect_ratio
1233 * in the atomic state.
1235 int drm_mode_create_scaling_mode_property(struct drm_device
*dev
)
1237 struct drm_property
*scaling_mode
;
1239 if (dev
->mode_config
.scaling_mode_property
)
1243 drm_property_create_enum(dev
, 0, "scaling mode",
1244 drm_scaling_mode_enum_list
,
1245 ARRAY_SIZE(drm_scaling_mode_enum_list
));
1247 dev
->mode_config
.scaling_mode_property
= scaling_mode
;
1251 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property
);
1254 * drm_connector_attach_scaling_mode_property - attach atomic scaling mode property
1255 * @connector: connector to attach scaling mode property on.
1256 * @scaling_mode_mask: or'ed mask of BIT(%DRM_MODE_SCALE_\*).
1258 * This is used to add support for scaling mode to atomic drivers.
1259 * The scaling mode will be set to &drm_connector_state.picture_aspect_ratio
1260 * and can be used from &drm_connector_helper_funcs->atomic_check for validation.
1262 * This is the atomic version of drm_mode_create_scaling_mode_property().
1265 * Zero on success, negative errno on failure.
1267 int drm_connector_attach_scaling_mode_property(struct drm_connector
*connector
,
1268 u32 scaling_mode_mask
)
1270 struct drm_device
*dev
= connector
->dev
;
1271 struct drm_property
*scaling_mode_property
;
1273 const unsigned valid_scaling_mode_mask
=
1274 (1U << ARRAY_SIZE(drm_scaling_mode_enum_list
)) - 1;
1276 if (WARN_ON(hweight32(scaling_mode_mask
) < 2 ||
1277 scaling_mode_mask
& ~valid_scaling_mode_mask
))
1280 scaling_mode_property
=
1281 drm_property_create(dev
, DRM_MODE_PROP_ENUM
, "scaling mode",
1282 hweight32(scaling_mode_mask
));
1284 if (!scaling_mode_property
)
1287 for (i
= 0; i
< ARRAY_SIZE(drm_scaling_mode_enum_list
); i
++) {
1290 if (!(BIT(i
) & scaling_mode_mask
))
1293 ret
= drm_property_add_enum(scaling_mode_property
,
1294 drm_scaling_mode_enum_list
[i
].type
,
1295 drm_scaling_mode_enum_list
[i
].name
);
1298 drm_property_destroy(dev
, scaling_mode_property
);
1304 drm_object_attach_property(&connector
->base
,
1305 scaling_mode_property
, 0);
1307 connector
->scaling_mode_property
= scaling_mode_property
;
1311 EXPORT_SYMBOL(drm_connector_attach_scaling_mode_property
);
1314 * drm_connector_attach_content_protection_property - attach content protection
1317 * @connector: connector to attach CP property on.
1319 * This is used to add support for content protection on select connectors.
1320 * Content Protection is intentionally vague to allow for different underlying
1321 * technologies, however it is most implemented by HDCP.
1323 * The content protection will be set to &drm_connector_state.content_protection
1326 * Zero on success, negative errno on failure.
1328 int drm_connector_attach_content_protection_property(
1329 struct drm_connector
*connector
)
1331 struct drm_device
*dev
= connector
->dev
;
1332 struct drm_property
*prop
;
1334 prop
= drm_property_create_enum(dev
, 0, "Content Protection",
1336 ARRAY_SIZE(drm_cp_enum_list
));
1340 drm_object_attach_property(&connector
->base
, prop
,
1341 DRM_MODE_CONTENT_PROTECTION_UNDESIRED
);
1343 connector
->content_protection_property
= prop
;
1347 EXPORT_SYMBOL(drm_connector_attach_content_protection_property
);
1350 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1353 * Called by a driver the first time it's needed, must be attached to desired
1357 * Zero on success, negative errno on failure.
1359 int drm_mode_create_aspect_ratio_property(struct drm_device
*dev
)
1361 if (dev
->mode_config
.aspect_ratio_property
)
1364 dev
->mode_config
.aspect_ratio_property
=
1365 drm_property_create_enum(dev
, 0, "aspect ratio",
1366 drm_aspect_ratio_enum_list
,
1367 ARRAY_SIZE(drm_aspect_ratio_enum_list
));
1369 if (dev
->mode_config
.aspect_ratio_property
== NULL
)
1374 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property
);
1377 * drm_mode_create_content_type_property - create content type property
1380 * Called by a driver the first time it's needed, must be attached to desired
1384 * Zero on success, negative errno on failure.
1386 int drm_mode_create_content_type_property(struct drm_device
*dev
)
1388 if (dev
->mode_config
.content_type_property
)
1391 dev
->mode_config
.content_type_property
=
1392 drm_property_create_enum(dev
, 0, "content type",
1393 drm_content_type_enum_list
,
1394 ARRAY_SIZE(drm_content_type_enum_list
));
1396 if (dev
->mode_config
.content_type_property
== NULL
)
1401 EXPORT_SYMBOL(drm_mode_create_content_type_property
);
1404 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1407 * Create the the suggested x/y offset property for connectors.
1409 int drm_mode_create_suggested_offset_properties(struct drm_device
*dev
)
1411 if (dev
->mode_config
.suggested_x_property
&& dev
->mode_config
.suggested_y_property
)
1414 dev
->mode_config
.suggested_x_property
=
1415 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested X", 0, 0xffffffff);
1417 dev
->mode_config
.suggested_y_property
=
1418 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested Y", 0, 0xffffffff);
1420 if (dev
->mode_config
.suggested_x_property
== NULL
||
1421 dev
->mode_config
.suggested_y_property
== NULL
)
1425 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties
);
1428 * drm_connector_set_path_property - set tile property on connector
1429 * @connector: connector to set property on.
1430 * @path: path to use for property; must not be NULL.
1432 * This creates a property to expose to userspace to specify a
1433 * connector path. This is mainly used for DisplayPort MST where
1434 * connectors have a topology and we want to allow userspace to give
1435 * them more meaningful names.
1438 * Zero on success, negative errno on failure.
1440 int drm_connector_set_path_property(struct drm_connector
*connector
,
1443 struct drm_device
*dev
= connector
->dev
;
1446 ret
= drm_property_replace_global_blob(dev
,
1447 &connector
->path_blob_ptr
,
1451 dev
->mode_config
.path_property
);
1454 EXPORT_SYMBOL(drm_connector_set_path_property
);
1457 * drm_connector_set_tile_property - set tile property on connector
1458 * @connector: connector to set property on.
1460 * This looks up the tile information for a connector, and creates a
1461 * property for userspace to parse if it exists. The property is of
1462 * the form of 8 integers using ':' as a separator.
1465 * Zero on success, errno on failure.
1467 int drm_connector_set_tile_property(struct drm_connector
*connector
)
1469 struct drm_device
*dev
= connector
->dev
;
1473 if (!connector
->has_tile
) {
1474 ret
= drm_property_replace_global_blob(dev
,
1475 &connector
->tile_blob_ptr
,
1479 dev
->mode_config
.tile_property
);
1483 snprintf(tile
, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
1484 connector
->tile_group
->id
, connector
->tile_is_single_monitor
,
1485 connector
->num_h_tile
, connector
->num_v_tile
,
1486 connector
->tile_h_loc
, connector
->tile_v_loc
,
1487 connector
->tile_h_size
, connector
->tile_v_size
);
1489 ret
= drm_property_replace_global_blob(dev
,
1490 &connector
->tile_blob_ptr
,
1494 dev
->mode_config
.tile_property
);
1497 EXPORT_SYMBOL(drm_connector_set_tile_property
);
1500 * drm_connector_update_edid_property - update the edid property of a connector
1501 * @connector: drm connector
1502 * @edid: new value of the edid property
1504 * This function creates a new blob modeset object and assigns its id to the
1505 * connector's edid property.
1508 * Zero on success, negative errno on failure.
1510 int drm_connector_update_edid_property(struct drm_connector
*connector
,
1511 const struct edid
*edid
)
1513 struct drm_device
*dev
= connector
->dev
;
1517 /* ignore requests to set edid when overridden */
1518 if (connector
->override_edid
)
1522 size
= EDID_LENGTH
* (1 + edid
->extensions
);
1524 /* Set the display info, using edid if available, otherwise
1525 * reseting the values to defaults. This duplicates the work
1526 * done in drm_add_edid_modes, but that function is not
1527 * consistently called before this one in all drivers and the
1528 * computation is cheap enough that it seems better to
1529 * duplicate it rather than attempt to ensure some arbitrary
1530 * ordering of calls.
1533 drm_add_display_info(connector
, edid
);
1535 drm_reset_display_info(connector
);
1537 drm_object_property_set_value(&connector
->base
,
1538 dev
->mode_config
.non_desktop_property
,
1539 connector
->display_info
.non_desktop
);
1541 ret
= drm_property_replace_global_blob(dev
,
1542 &connector
->edid_blob_ptr
,
1546 dev
->mode_config
.edid_property
);
1549 EXPORT_SYMBOL(drm_connector_update_edid_property
);
1552 * drm_connector_set_link_status_property - Set link status property of a connector
1553 * @connector: drm connector
1554 * @link_status: new value of link status property (0: Good, 1: Bad)
1556 * In usual working scenario, this link status property will always be set to
1557 * "GOOD". If something fails during or after a mode set, the kernel driver
1558 * may set this link status property to "BAD". The caller then needs to send a
1559 * hotplug uevent for userspace to re-check the valid modes through
1560 * GET_CONNECTOR_IOCTL and retry modeset.
1562 * Note: Drivers cannot rely on userspace to support this property and
1563 * issue a modeset. As such, they may choose to handle issues (like
1564 * re-training a link) without userspace's intervention.
1566 * The reason for adding this property is to handle link training failures, but
1567 * it is not limited to DP or link training. For example, if we implement
1568 * asynchronous setcrtc, this property can be used to report any failures in that.
1570 void drm_connector_set_link_status_property(struct drm_connector
*connector
,
1571 uint64_t link_status
)
1573 struct drm_device
*dev
= connector
->dev
;
1575 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
1576 connector
->state
->link_status
= link_status
;
1577 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
1579 EXPORT_SYMBOL(drm_connector_set_link_status_property
);
1582 * drm_connector_init_panel_orientation_property -
1583 * initialize the connecters panel_orientation property
1584 * @connector: connector for which to init the panel-orientation property.
1585 * @width: width in pixels of the panel, used for panel quirk detection
1586 * @height: height in pixels of the panel, used for panel quirk detection
1588 * This function should only be called for built-in panels, after setting
1589 * connector->display_info.panel_orientation first (if known).
1591 * This function will check for platform specific (e.g. DMI based) quirks
1592 * overriding display_info.panel_orientation first, then if panel_orientation
1593 * is not DRM_MODE_PANEL_ORIENTATION_UNKNOWN it will attach the
1594 * "panel orientation" property to the connector.
1597 * Zero on success, negative errno on failure.
1599 int drm_connector_init_panel_orientation_property(
1600 struct drm_connector
*connector
, int width
, int height
)
1602 struct drm_device
*dev
= connector
->dev
;
1603 struct drm_display_info
*info
= &connector
->display_info
;
1604 struct drm_property
*prop
;
1605 int orientation_quirk
;
1607 orientation_quirk
= drm_get_panel_orientation_quirk(width
, height
);
1608 if (orientation_quirk
!= DRM_MODE_PANEL_ORIENTATION_UNKNOWN
)
1609 info
->panel_orientation
= orientation_quirk
;
1611 if (info
->panel_orientation
== DRM_MODE_PANEL_ORIENTATION_UNKNOWN
)
1614 prop
= dev
->mode_config
.panel_orientation_property
;
1616 prop
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
1617 "panel orientation",
1618 drm_panel_orientation_enum_list
,
1619 ARRAY_SIZE(drm_panel_orientation_enum_list
));
1623 dev
->mode_config
.panel_orientation_property
= prop
;
1626 drm_object_attach_property(&connector
->base
, prop
,
1627 info
->panel_orientation
);
1630 EXPORT_SYMBOL(drm_connector_init_panel_orientation_property
);
1632 int drm_connector_set_obj_prop(struct drm_mode_object
*obj
,
1633 struct drm_property
*property
,
1637 struct drm_connector
*connector
= obj_to_connector(obj
);
1639 /* Do DPMS ourselves */
1640 if (property
== connector
->dev
->mode_config
.dpms_property
) {
1641 ret
= (*connector
->funcs
->dpms
)(connector
, (int)value
);
1642 } else if (connector
->funcs
->set_property
)
1643 ret
= connector
->funcs
->set_property(connector
, property
, value
);
1646 drm_object_property_set_value(&connector
->base
, property
, value
);
1650 int drm_connector_property_set_ioctl(struct drm_device
*dev
,
1651 void *data
, struct drm_file
*file_priv
)
1653 struct drm_mode_connector_set_property
*conn_set_prop
= data
;
1654 struct drm_mode_obj_set_property obj_set_prop
= {
1655 .value
= conn_set_prop
->value
,
1656 .prop_id
= conn_set_prop
->prop_id
,
1657 .obj_id
= conn_set_prop
->connector_id
,
1658 .obj_type
= DRM_MODE_OBJECT_CONNECTOR
1661 /* It does all the locking and checking we need */
1662 return drm_mode_obj_set_property_ioctl(dev
, &obj_set_prop
, file_priv
);
1665 static struct drm_encoder
*drm_connector_get_encoder(struct drm_connector
*connector
)
1667 /* For atomic drivers only state objects are synchronously updated and
1668 * protected by modeset locks, so check those first. */
1669 if (connector
->state
)
1670 return connector
->state
->best_encoder
;
1671 return connector
->encoder
;
1675 drm_mode_expose_to_userspace(const struct drm_display_mode
*mode
,
1676 const struct list_head
*export_list
,
1677 const struct drm_file
*file_priv
)
1680 * If user-space hasn't configured the driver to expose the stereo 3D
1681 * modes, don't expose them.
1683 if (!file_priv
->stereo_allowed
&& drm_mode_is_stereo(mode
))
1686 * If user-space hasn't configured the driver to expose the modes
1687 * with aspect-ratio, don't expose them. However if such a mode
1688 * is unique, let it be exposed, but reset the aspect-ratio flags
1689 * while preparing the list of user-modes.
1691 if (!file_priv
->aspect_ratio_allowed
) {
1692 struct drm_display_mode
*mode_itr
;
1694 list_for_each_entry(mode_itr
, export_list
, export_head
)
1695 if (drm_mode_match(mode_itr
, mode
,
1696 DRM_MODE_MATCH_TIMINGS
|
1697 DRM_MODE_MATCH_CLOCK
|
1698 DRM_MODE_MATCH_FLAGS
|
1699 DRM_MODE_MATCH_3D_FLAGS
))
1706 int drm_mode_getconnector(struct drm_device
*dev
, void *data
,
1707 struct drm_file
*file_priv
)
1709 struct drm_mode_get_connector
*out_resp
= data
;
1710 struct drm_connector
*connector
;
1711 struct drm_encoder
*encoder
;
1712 struct drm_display_mode
*mode
;
1714 int encoders_count
= 0;
1718 struct drm_mode_modeinfo u_mode
;
1719 struct drm_mode_modeinfo __user
*mode_ptr
;
1720 uint32_t __user
*encoder_ptr
;
1721 LIST_HEAD(export_list
);
1723 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1726 memset(&u_mode
, 0, sizeof(struct drm_mode_modeinfo
));
1728 connector
= drm_connector_lookup(dev
, file_priv
, out_resp
->connector_id
);
1732 drm_connector_for_each_possible_encoder(connector
, encoder
, i
)
1735 if ((out_resp
->count_encoders
>= encoders_count
) && encoders_count
) {
1737 encoder_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->encoders_ptr
);
1739 drm_connector_for_each_possible_encoder(connector
, encoder
, i
) {
1740 if (put_user(encoder
->base
.id
, encoder_ptr
+ copied
)) {
1747 out_resp
->count_encoders
= encoders_count
;
1749 out_resp
->connector_id
= connector
->base
.id
;
1750 out_resp
->connector_type
= connector
->connector_type
;
1751 out_resp
->connector_type_id
= connector
->connector_type_id
;
1753 mutex_lock(&dev
->mode_config
.mutex
);
1754 if (out_resp
->count_modes
== 0) {
1755 connector
->funcs
->fill_modes(connector
,
1756 dev
->mode_config
.max_width
,
1757 dev
->mode_config
.max_height
);
1760 out_resp
->mm_width
= connector
->display_info
.width_mm
;
1761 out_resp
->mm_height
= connector
->display_info
.height_mm
;
1762 out_resp
->subpixel
= connector
->display_info
.subpixel_order
;
1763 out_resp
->connection
= connector
->status
;
1765 /* delayed so we get modes regardless of pre-fill_modes state */
1766 list_for_each_entry(mode
, &connector
->modes
, head
)
1767 if (drm_mode_expose_to_userspace(mode
, &export_list
,
1769 list_add_tail(&mode
->export_head
, &export_list
);
1774 * This ioctl is called twice, once to determine how much space is
1775 * needed, and the 2nd time to fill it.
1776 * The modes that need to be exposed to the user are maintained in the
1777 * 'export_list'. When the ioctl is called first time to determine the,
1778 * space, the export_list gets filled, to find the no.of modes. In the
1779 * 2nd time, the user modes are filled, one by one from the export_list.
1781 if ((out_resp
->count_modes
>= mode_count
) && mode_count
) {
1783 mode_ptr
= (struct drm_mode_modeinfo __user
*)(unsigned long)out_resp
->modes_ptr
;
1784 list_for_each_entry(mode
, &export_list
, export_head
) {
1785 drm_mode_convert_to_umode(&u_mode
, mode
);
1787 * Reset aspect ratio flags of user-mode, if modes with
1788 * aspect-ratio are not supported.
1790 if (!file_priv
->aspect_ratio_allowed
)
1791 u_mode
.flags
&= ~DRM_MODE_FLAG_PIC_AR_MASK
;
1792 if (copy_to_user(mode_ptr
+ copied
,
1793 &u_mode
, sizeof(u_mode
))) {
1795 mutex_unlock(&dev
->mode_config
.mutex
);
1802 out_resp
->count_modes
= mode_count
;
1803 mutex_unlock(&dev
->mode_config
.mutex
);
1805 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
1806 encoder
= drm_connector_get_encoder(connector
);
1808 out_resp
->encoder_id
= encoder
->base
.id
;
1810 out_resp
->encoder_id
= 0;
1812 /* Only grab properties after probing, to make sure EDID and other
1813 * properties reflect the latest status. */
1814 ret
= drm_mode_object_get_properties(&connector
->base
, file_priv
->atomic
,
1815 (uint32_t __user
*)(unsigned long)(out_resp
->props_ptr
),
1816 (uint64_t __user
*)(unsigned long)(out_resp
->prop_values_ptr
),
1817 &out_resp
->count_props
);
1818 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
1821 drm_connector_put(connector
);
1830 * Tile groups are used to represent tiled monitors with a unique integer
1831 * identifier. Tiled monitors using DisplayID v1.3 have a unique 8-byte handle,
1832 * we store this in a tile group, so we have a common identifier for all tiles
1833 * in a monitor group. The property is called "TILE". Drivers can manage tile
1834 * groups using drm_mode_create_tile_group(), drm_mode_put_tile_group() and
1835 * drm_mode_get_tile_group(). But this is only needed for internal panels where
1836 * the tile group information is exposed through a non-standard way.
1839 static void drm_tile_group_free(struct kref
*kref
)
1841 struct drm_tile_group
*tg
= container_of(kref
, struct drm_tile_group
, refcount
);
1842 struct drm_device
*dev
= tg
->dev
;
1843 mutex_lock(&dev
->mode_config
.idr_mutex
);
1844 idr_remove(&dev
->mode_config
.tile_idr
, tg
->id
);
1845 mutex_unlock(&dev
->mode_config
.idr_mutex
);
1850 * drm_mode_put_tile_group - drop a reference to a tile group.
1852 * @tg: tile group to drop reference to.
1854 * drop reference to tile group and free if 0.
1856 void drm_mode_put_tile_group(struct drm_device
*dev
,
1857 struct drm_tile_group
*tg
)
1859 kref_put(&tg
->refcount
, drm_tile_group_free
);
1861 EXPORT_SYMBOL(drm_mode_put_tile_group
);
1864 * drm_mode_get_tile_group - get a reference to an existing tile group
1866 * @topology: 8-bytes unique per monitor.
1868 * Use the unique bytes to get a reference to an existing tile group.
1871 * tile group or NULL if not found.
1873 struct drm_tile_group
*drm_mode_get_tile_group(struct drm_device
*dev
,
1876 struct drm_tile_group
*tg
;
1878 mutex_lock(&dev
->mode_config
.idr_mutex
);
1879 idr_for_each_entry(&dev
->mode_config
.tile_idr
, tg
, id
) {
1880 if (!memcmp(tg
->group_data
, topology
, 8)) {
1881 if (!kref_get_unless_zero(&tg
->refcount
))
1883 mutex_unlock(&dev
->mode_config
.idr_mutex
);
1887 mutex_unlock(&dev
->mode_config
.idr_mutex
);
1890 EXPORT_SYMBOL(drm_mode_get_tile_group
);
1893 * drm_mode_create_tile_group - create a tile group from a displayid description
1895 * @topology: 8-bytes unique per monitor.
1897 * Create a tile group for the unique monitor, and get a unique
1898 * identifier for the tile group.
1901 * new tile group or error.
1903 struct drm_tile_group
*drm_mode_create_tile_group(struct drm_device
*dev
,
1906 struct drm_tile_group
*tg
;
1909 tg
= kzalloc(sizeof(*tg
), GFP_KERNEL
);
1911 return ERR_PTR(-ENOMEM
);
1913 kref_init(&tg
->refcount
);
1914 memcpy(tg
->group_data
, topology
, 8);
1917 mutex_lock(&dev
->mode_config
.idr_mutex
);
1918 ret
= idr_alloc(&dev
->mode_config
.tile_idr
, tg
, 1, 0, GFP_KERNEL
);
1926 mutex_unlock(&dev
->mode_config
.idr_mutex
);
1929 EXPORT_SYMBOL(drm_mode_create_tile_group
);