2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
6 * DRM core CRTC related functions
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
32 #include <linux/ctype.h>
33 #include <linux/list.h>
34 #include <linux/slab.h>
35 #include <linux/export.h>
37 #include <drm/drm_crtc.h>
38 #include <drm/drm_edid.h>
39 #include <drm/drm_fourcc.h>
42 * drm_modeset_lock_all - take all modeset locks
45 * This function takes all modeset locks, suitable where a more fine-grained
46 * scheme isn't (yet) implemented. Locks must be dropped with
47 * drm_modeset_unlock_all.
49 void drm_modeset_lock_all(struct drm_device *dev)
51 struct drm_crtc *crtc;
53 mutex_lock(&dev->mode_config.mutex);
55 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
56 mutex_lock_nest_lock(&crtc->mutex, &dev->mode_config.mutex);
58 EXPORT_SYMBOL(drm_modeset_lock_all);
61 * drm_modeset_unlock_all - drop all modeset locks
64 * This function drop all modeset locks taken by drm_modeset_lock_all.
66 void drm_modeset_unlock_all(struct drm_device *dev)
68 struct drm_crtc *crtc;
70 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
71 mutex_unlock(&crtc->mutex);
73 mutex_unlock(&dev->mode_config.mutex);
75 EXPORT_SYMBOL(drm_modeset_unlock_all);
78 * drm_warn_on_modeset_not_all_locked - check that all modeset locks are locked
81 * Useful as a debug assert.
83 void drm_warn_on_modeset_not_all_locked(struct drm_device *dev)
85 struct drm_crtc *crtc;
87 /* Locking is currently fubar in the panic handler. */
91 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
92 WARN_ON(!mutex_is_locked(&crtc->mutex));
94 WARN_ON(!mutex_is_locked(&dev->mode_config.mutex));
96 EXPORT_SYMBOL(drm_warn_on_modeset_not_all_locked);
98 /* Avoid boilerplate. I'm tired of typing. */
99 #define DRM_ENUM_NAME_FN(fnname, list) \
100 const char *fnname(int val) \
103 for (i = 0; i < ARRAY_SIZE(list); i++) { \
104 if (list[i].type == val) \
105 return list[i].name; \
107 return "(unknown)"; \
113 static const struct drm_prop_enum_list drm_dpms_enum_list[] =
114 { { DRM_MODE_DPMS_ON, "On" },
115 { DRM_MODE_DPMS_STANDBY, "Standby" },
116 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
117 { DRM_MODE_DPMS_OFF, "Off" }
120 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
123 * Optional properties
125 static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
127 { DRM_MODE_SCALE_NONE, "None" },
128 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
129 { DRM_MODE_SCALE_CENTER, "Center" },
130 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
134 * Non-global properties, but "required" for certain connectors.
136 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
138 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
139 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
140 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
143 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
145 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
147 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
148 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
149 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
152 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
153 drm_dvi_i_subconnector_enum_list)
155 static const struct drm_prop_enum_list drm_tv_select_enum_list[] =
157 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
158 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
159 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
160 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
161 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
164 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
166 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
168 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
169 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
170 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
171 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
172 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
175 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
176 drm_tv_subconnector_enum_list)
178 static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
179 { DRM_MODE_DIRTY_OFF, "Off" },
180 { DRM_MODE_DIRTY_ON, "On" },
181 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
184 struct drm_conn_prop_enum_list {
191 * Connector and encoder types.
193 static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
194 { { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
195 { DRM_MODE_CONNECTOR_VGA, "VGA" },
196 { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
197 { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
198 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
199 { DRM_MODE_CONNECTOR_Composite, "Composite" },
200 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
201 { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
202 { DRM_MODE_CONNECTOR_Component, "Component" },
203 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
204 { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
205 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
206 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
207 { DRM_MODE_CONNECTOR_TV, "TV" },
208 { DRM_MODE_CONNECTOR_eDP, "eDP" },
209 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
210 { DRM_MODE_CONNECTOR_DSI, "DSI" },
213 static const struct drm_prop_enum_list drm_encoder_enum_list[] =
214 { { DRM_MODE_ENCODER_NONE, "None" },
215 { DRM_MODE_ENCODER_DAC, "DAC" },
216 { DRM_MODE_ENCODER_TMDS, "TMDS" },
217 { DRM_MODE_ENCODER_LVDS, "LVDS" },
218 { DRM_MODE_ENCODER_TVDAC, "TV" },
219 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
220 { DRM_MODE_ENCODER_DSI, "DSI" },
223 void drm_connector_ida_init(void)
227 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
228 ida_init(&drm_connector_enum_list[i].ida);
231 void drm_connector_ida_destroy(void)
235 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
236 ida_destroy(&drm_connector_enum_list[i].ida);
240 * drm_get_encoder_name - return a string for encoder
241 * @encoder: encoder to compute name of
243 * Note that the buffer used by this function is globally shared and owned by
244 * the function itself.
246 * FIXME: This isn't really multithreading safe.
248 const char *drm_get_encoder_name(const struct drm_encoder *encoder)
252 snprintf(buf, 32, "%s-%d",
253 drm_encoder_enum_list[encoder->encoder_type].name,
257 EXPORT_SYMBOL(drm_get_encoder_name);
260 * drm_get_connector_name - return a string for connector
261 * @connector: connector to compute name of
263 * Note that the buffer used by this function is globally shared and owned by
264 * the function itself.
266 * FIXME: This isn't really multithreading safe.
268 const char *drm_get_connector_name(const struct drm_connector *connector)
272 snprintf(buf, 32, "%s-%d",
273 drm_connector_enum_list[connector->connector_type].name,
274 connector->connector_type_id);
277 EXPORT_SYMBOL(drm_get_connector_name);
280 * drm_get_connector_status_name - return a string for connector status
281 * @status: connector status to compute name of
283 * In contrast to the other drm_get_*_name functions this one here returns a
284 * const pointer and hence is threadsafe.
286 const char *drm_get_connector_status_name(enum drm_connector_status status)
288 if (status == connector_status_connected)
290 else if (status == connector_status_disconnected)
291 return "disconnected";
295 EXPORT_SYMBOL(drm_get_connector_status_name);
297 static char printable_char(int c)
299 return isascii(c) && isprint(c) ? c : '?';
303 * drm_get_format_name - return a string for drm fourcc format
304 * @format: format to compute name of
306 * Note that the buffer used by this function is globally shared and owned by
307 * the function itself.
309 * FIXME: This isn't really multithreading safe.
311 const char *drm_get_format_name(uint32_t format)
315 snprintf(buf, sizeof(buf),
316 "%c%c%c%c %s-endian (0x%08x)",
317 printable_char(format & 0xff),
318 printable_char((format >> 8) & 0xff),
319 printable_char((format >> 16) & 0xff),
320 printable_char((format >> 24) & 0x7f),
321 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
326 EXPORT_SYMBOL(drm_get_format_name);
329 * drm_mode_object_get - allocate a new modeset identifier
331 * @obj: object pointer, used to generate unique ID
332 * @obj_type: object type
334 * Create a unique identifier based on @ptr in @dev's identifier space. Used
335 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
336 * modeset identifiers are _not_ reference counted. Hence don't use this for
337 * reference counted modeset objects like framebuffers.
340 * New unique (relative to other objects in @dev) integer identifier for the
343 static int drm_mode_object_get(struct drm_device *dev,
344 struct drm_mode_object *obj, uint32_t obj_type)
348 mutex_lock(&dev->mode_config.idr_mutex);
349 ret = idr_alloc(&dev->mode_config.crtc_idr, obj, 1, 0, GFP_KERNEL);
352 * Set up the object linking under the protection of the idr
353 * lock so that other users can't see inconsistent state.
356 obj->type = obj_type;
358 mutex_unlock(&dev->mode_config.idr_mutex);
360 return ret < 0 ? ret : 0;
364 * drm_mode_object_put - free a modeset identifer
366 * @object: object to free
368 * Free @id from @dev's unique identifier pool. Note that despite the _get
369 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
370 * for reference counted modeset objects like framebuffers.
372 static void drm_mode_object_put(struct drm_device *dev,
373 struct drm_mode_object *object)
375 mutex_lock(&dev->mode_config.idr_mutex);
376 idr_remove(&dev->mode_config.crtc_idr, object->id);
377 mutex_unlock(&dev->mode_config.idr_mutex);
381 * drm_mode_object_find - look up a drm object with static lifetime
383 * @id: id of the mode object
384 * @type: type of the mode object
386 * Note that framebuffers cannot be looked up with this functions - since those
387 * are reference counted, they need special treatment.
389 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
390 uint32_t id, uint32_t type)
392 struct drm_mode_object *obj = NULL;
394 /* Framebuffers are reference counted and need their own lookup
396 WARN_ON(type == DRM_MODE_OBJECT_FB);
398 mutex_lock(&dev->mode_config.idr_mutex);
399 obj = idr_find(&dev->mode_config.crtc_idr, id);
400 if (!obj || (obj->type != type) || (obj->id != id))
402 mutex_unlock(&dev->mode_config.idr_mutex);
406 EXPORT_SYMBOL(drm_mode_object_find);
409 * drm_framebuffer_init - initialize a framebuffer
411 * @fb: framebuffer to be initialized
412 * @funcs: ... with these functions
414 * Allocates an ID for the framebuffer's parent mode object, sets its mode
415 * functions & device file and adds it to the master fd list.
418 * This functions publishes the fb and makes it available for concurrent access
419 * by other users. Which means by this point the fb _must_ be fully set up -
420 * since all the fb attributes are invariant over its lifetime, no further
421 * locking but only correct reference counting is required.
424 * Zero on success, error code on failure.
426 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
427 const struct drm_framebuffer_funcs *funcs)
431 mutex_lock(&dev->mode_config.fb_lock);
432 kref_init(&fb->refcount);
433 INIT_LIST_HEAD(&fb->filp_head);
437 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
441 /* Grab the idr reference. */
442 drm_framebuffer_reference(fb);
444 dev->mode_config.num_fb++;
445 list_add(&fb->head, &dev->mode_config.fb_list);
447 mutex_unlock(&dev->mode_config.fb_lock);
451 EXPORT_SYMBOL(drm_framebuffer_init);
453 static void drm_framebuffer_free(struct kref *kref)
455 struct drm_framebuffer *fb =
456 container_of(kref, struct drm_framebuffer, refcount);
457 fb->funcs->destroy(fb);
460 static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
463 struct drm_mode_object *obj = NULL;
464 struct drm_framebuffer *fb;
466 mutex_lock(&dev->mode_config.idr_mutex);
467 obj = idr_find(&dev->mode_config.crtc_idr, id);
468 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
472 mutex_unlock(&dev->mode_config.idr_mutex);
478 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
480 * @id: id of the fb object
482 * If successful, this grabs an additional reference to the framebuffer -
483 * callers need to make sure to eventually unreference the returned framebuffer
484 * again, using @drm_framebuffer_unreference.
486 struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
489 struct drm_framebuffer *fb;
491 mutex_lock(&dev->mode_config.fb_lock);
492 fb = __drm_framebuffer_lookup(dev, id);
494 drm_framebuffer_reference(fb);
495 mutex_unlock(&dev->mode_config.fb_lock);
499 EXPORT_SYMBOL(drm_framebuffer_lookup);
502 * drm_framebuffer_unreference - unref a framebuffer
503 * @fb: framebuffer to unref
505 * This functions decrements the fb's refcount and frees it if it drops to zero.
507 void drm_framebuffer_unreference(struct drm_framebuffer *fb)
509 DRM_DEBUG("FB ID: %d\n", fb->base.id);
510 kref_put(&fb->refcount, drm_framebuffer_free);
512 EXPORT_SYMBOL(drm_framebuffer_unreference);
515 * drm_framebuffer_reference - incr the fb refcnt
518 * This functions increments the fb's refcount.
520 void drm_framebuffer_reference(struct drm_framebuffer *fb)
522 DRM_DEBUG("FB ID: %d\n", fb->base.id);
523 kref_get(&fb->refcount);
525 EXPORT_SYMBOL(drm_framebuffer_reference);
527 static void drm_framebuffer_free_bug(struct kref *kref)
532 static void __drm_framebuffer_unreference(struct drm_framebuffer *fb)
534 DRM_DEBUG("FB ID: %d\n", fb->base.id);
535 kref_put(&fb->refcount, drm_framebuffer_free_bug);
538 /* dev->mode_config.fb_lock must be held! */
539 static void __drm_framebuffer_unregister(struct drm_device *dev,
540 struct drm_framebuffer *fb)
542 mutex_lock(&dev->mode_config.idr_mutex);
543 idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
544 mutex_unlock(&dev->mode_config.idr_mutex);
548 __drm_framebuffer_unreference(fb);
552 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
553 * @fb: fb to unregister
555 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
556 * those used for fbdev. Note that the caller must hold a reference of it's own,
557 * i.e. the object may not be destroyed through this call (since it'll lead to a
558 * locking inversion).
560 void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
562 struct drm_device *dev = fb->dev;
564 mutex_lock(&dev->mode_config.fb_lock);
565 /* Mark fb as reaped and drop idr ref. */
566 __drm_framebuffer_unregister(dev, fb);
567 mutex_unlock(&dev->mode_config.fb_lock);
569 EXPORT_SYMBOL(drm_framebuffer_unregister_private);
572 * drm_framebuffer_cleanup - remove a framebuffer object
573 * @fb: framebuffer to remove
575 * Cleanup framebuffer. This function is intended to be used from the drivers
576 * ->destroy callback. It can also be used to clean up driver private
577 * framebuffers embedded into a larger structure.
579 * Note that this function does not remove the fb from active usuage - if it is
580 * still used anywhere, hilarity can ensue since userspace could call getfb on
581 * the id and get back -EINVAL. Obviously no concern at driver unload time.
583 * Also, the framebuffer will not be removed from the lookup idr - for
584 * user-created framebuffers this will happen in in the rmfb ioctl. For
585 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
586 * drm_framebuffer_unregister_private.
588 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
590 struct drm_device *dev = fb->dev;
592 mutex_lock(&dev->mode_config.fb_lock);
594 dev->mode_config.num_fb--;
595 mutex_unlock(&dev->mode_config.fb_lock);
597 EXPORT_SYMBOL(drm_framebuffer_cleanup);
600 * drm_framebuffer_remove - remove and unreference a framebuffer object
601 * @fb: framebuffer to remove
603 * Scans all the CRTCs and planes in @dev's mode_config. If they're
604 * using @fb, removes it, setting it to NULL. Then drops the reference to the
605 * passed-in framebuffer. Might take the modeset locks.
607 * Note that this function optimizes the cleanup away if the caller holds the
608 * last reference to the framebuffer. It is also guaranteed to not take the
609 * modeset locks in this case.
611 void drm_framebuffer_remove(struct drm_framebuffer *fb)
613 struct drm_device *dev = fb->dev;
614 struct drm_crtc *crtc;
615 struct drm_plane *plane;
616 struct drm_mode_set set;
619 WARN_ON(!list_empty(&fb->filp_head));
622 * drm ABI mandates that we remove any deleted framebuffers from active
623 * useage. But since most sane clients only remove framebuffers they no
624 * longer need, try to optimize this away.
626 * Since we're holding a reference ourselves, observing a refcount of 1
627 * means that we're the last holder and can skip it. Also, the refcount
628 * can never increase from 1 again, so we don't need any barriers or
631 * Note that userspace could try to race with use and instate a new
632 * usage _after_ we've cleared all current ones. End result will be an
633 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
636 if (atomic_read(&fb->refcount.refcount) > 1) {
637 drm_modeset_lock_all(dev);
638 /* remove from any CRTC */
639 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
640 if (crtc->fb == fb) {
641 /* should turn off the crtc */
642 memset(&set, 0, sizeof(struct drm_mode_set));
645 ret = drm_mode_set_config_internal(&set);
647 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
651 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
653 drm_plane_force_disable(plane);
655 drm_modeset_unlock_all(dev);
658 drm_framebuffer_unreference(fb);
660 EXPORT_SYMBOL(drm_framebuffer_remove);
663 * drm_crtc_init - Initialise a new CRTC object
665 * @crtc: CRTC object to init
666 * @funcs: callbacks for the new CRTC
668 * Inits a new object created as base part of a driver crtc object.
671 * Zero on success, error code on failure.
673 int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
674 const struct drm_crtc_funcs *funcs)
680 crtc->invert_dimensions = false;
682 drm_modeset_lock_all(dev);
683 mutex_init(&crtc->mutex);
684 mutex_lock_nest_lock(&crtc->mutex, &dev->mode_config.mutex);
686 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
690 crtc->base.properties = &crtc->properties;
692 list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
693 dev->mode_config.num_crtc++;
696 drm_modeset_unlock_all(dev);
700 EXPORT_SYMBOL(drm_crtc_init);
703 * drm_crtc_cleanup - Clean up the core crtc usage
704 * @crtc: CRTC to cleanup
706 * This function cleans up @crtc and removes it from the DRM mode setting
707 * core. Note that the function does *not* free the crtc structure itself,
708 * this is the responsibility of the caller.
710 void drm_crtc_cleanup(struct drm_crtc *crtc)
712 struct drm_device *dev = crtc->dev;
714 kfree(crtc->gamma_store);
715 crtc->gamma_store = NULL;
717 drm_mode_object_put(dev, &crtc->base);
718 list_del(&crtc->head);
719 dev->mode_config.num_crtc--;
721 EXPORT_SYMBOL(drm_crtc_cleanup);
724 * drm_crtc_index - find the index of a registered CRTC
725 * @crtc: CRTC to find index for
727 * Given a registered CRTC, return the index of that CRTC within a DRM
728 * device's list of CRTCs.
730 unsigned int drm_crtc_index(struct drm_crtc *crtc)
732 unsigned int index = 0;
733 struct drm_crtc *tmp;
735 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
744 EXPORT_SYMBOL(drm_crtc_index);
747 * drm_mode_probed_add - add a mode to a connector's probed mode list
748 * @connector: connector the new mode
751 * Add @mode to @connector's mode list for later use.
753 void drm_mode_probed_add(struct drm_connector *connector,
754 struct drm_display_mode *mode)
756 list_add_tail(&mode->head, &connector->probed_modes);
758 EXPORT_SYMBOL(drm_mode_probed_add);
761 * drm_mode_remove - remove and free a mode
762 * @connector: connector list to modify
763 * @mode: mode to remove
765 * Remove @mode from @connector's mode list, then free it.
767 static void drm_mode_remove(struct drm_connector *connector,
768 struct drm_display_mode *mode)
770 list_del(&mode->head);
771 drm_mode_destroy(connector->dev, mode);
775 * drm_connector_init - Init a preallocated connector
777 * @connector: the connector to init
778 * @funcs: callbacks for this connector
779 * @connector_type: user visible type of the connector
781 * Initialises a preallocated connector. Connectors should be
782 * subclassed as part of driver connector objects.
785 * Zero on success, error code on failure.
787 int drm_connector_init(struct drm_device *dev,
788 struct drm_connector *connector,
789 const struct drm_connector_funcs *funcs,
793 struct ida *connector_ida =
794 &drm_connector_enum_list[connector_type].ida;
796 drm_modeset_lock_all(dev);
798 ret = drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
802 connector->base.properties = &connector->properties;
803 connector->dev = dev;
804 connector->funcs = funcs;
805 connector->connector_type = connector_type;
806 connector->connector_type_id =
807 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
808 if (connector->connector_type_id < 0) {
809 ret = connector->connector_type_id;
810 drm_mode_object_put(dev, &connector->base);
813 INIT_LIST_HEAD(&connector->probed_modes);
814 INIT_LIST_HEAD(&connector->modes);
815 connector->edid_blob_ptr = NULL;
816 connector->status = connector_status_unknown;
818 list_add_tail(&connector->head, &dev->mode_config.connector_list);
819 dev->mode_config.num_connector++;
821 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
822 drm_object_attach_property(&connector->base,
823 dev->mode_config.edid_property,
826 drm_object_attach_property(&connector->base,
827 dev->mode_config.dpms_property, 0);
830 drm_modeset_unlock_all(dev);
834 EXPORT_SYMBOL(drm_connector_init);
837 * drm_connector_cleanup - cleans up an initialised connector
838 * @connector: connector to cleanup
840 * Cleans up the connector but doesn't free the object.
842 void drm_connector_cleanup(struct drm_connector *connector)
844 struct drm_device *dev = connector->dev;
845 struct drm_display_mode *mode, *t;
847 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
848 drm_mode_remove(connector, mode);
850 list_for_each_entry_safe(mode, t, &connector->modes, head)
851 drm_mode_remove(connector, mode);
853 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
854 connector->connector_type_id);
856 drm_mode_object_put(dev, &connector->base);
857 list_del(&connector->head);
858 dev->mode_config.num_connector--;
860 EXPORT_SYMBOL(drm_connector_cleanup);
863 * drm_connector_register - register a connector
864 * @connector: the connector to register
866 * Register userspace interfaces for a connector
869 * Zero on success, error code on failure.
871 int drm_connector_register(struct drm_connector *connector)
873 return drm_sysfs_connector_add(connector);
875 EXPORT_SYMBOL(drm_connector_register);
878 * drm_connector_unregister - unregister a connector
879 * @connector: the connector to unregister
881 * Unregister userspace interfaces for a connector
883 void drm_connector_unregister(struct drm_connector *connector)
885 drm_sysfs_connector_remove(connector);
887 EXPORT_SYMBOL(drm_connector_unregister);
891 * drm_connector_unplug_all - unregister connector userspace interfaces
894 * This function unregisters all connector userspace interfaces in sysfs. Should
895 * be call when the device is disconnected, e.g. from an usb driver's
896 * ->disconnect callback.
898 void drm_connector_unplug_all(struct drm_device *dev)
900 struct drm_connector *connector;
902 /* taking the mode config mutex ends up in a clash with sysfs */
903 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
904 drm_connector_unregister(connector);
907 EXPORT_SYMBOL(drm_connector_unplug_all);
910 * drm_bridge_init - initialize a drm transcoder/bridge
912 * @bridge: transcoder/bridge to set up
913 * @funcs: bridge function table
915 * Initialises a preallocated bridge. Bridges should be
916 * subclassed as part of driver connector objects.
919 * Zero on success, error code on failure.
921 int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
922 const struct drm_bridge_funcs *funcs)
926 drm_modeset_lock_all(dev);
928 ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
933 bridge->funcs = funcs;
935 list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
936 dev->mode_config.num_bridge++;
939 drm_modeset_unlock_all(dev);
942 EXPORT_SYMBOL(drm_bridge_init);
945 * drm_bridge_cleanup - cleans up an initialised bridge
946 * @bridge: bridge to cleanup
948 * Cleans up the bridge but doesn't free the object.
950 void drm_bridge_cleanup(struct drm_bridge *bridge)
952 struct drm_device *dev = bridge->dev;
954 drm_modeset_lock_all(dev);
955 drm_mode_object_put(dev, &bridge->base);
956 list_del(&bridge->head);
957 dev->mode_config.num_bridge--;
958 drm_modeset_unlock_all(dev);
960 EXPORT_SYMBOL(drm_bridge_cleanup);
963 * drm_encoder_init - Init a preallocated encoder
965 * @encoder: the encoder to init
966 * @funcs: callbacks for this encoder
967 * @encoder_type: user visible type of the encoder
969 * Initialises a preallocated encoder. Encoder should be
970 * subclassed as part of driver encoder objects.
973 * Zero on success, error code on failure.
975 int drm_encoder_init(struct drm_device *dev,
976 struct drm_encoder *encoder,
977 const struct drm_encoder_funcs *funcs,
982 drm_modeset_lock_all(dev);
984 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
989 encoder->encoder_type = encoder_type;
990 encoder->funcs = funcs;
992 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
993 dev->mode_config.num_encoder++;
996 drm_modeset_unlock_all(dev);
1000 EXPORT_SYMBOL(drm_encoder_init);
1003 * drm_encoder_cleanup - cleans up an initialised encoder
1004 * @encoder: encoder to cleanup
1006 * Cleans up the encoder but doesn't free the object.
1008 void drm_encoder_cleanup(struct drm_encoder *encoder)
1010 struct drm_device *dev = encoder->dev;
1011 drm_modeset_lock_all(dev);
1012 drm_mode_object_put(dev, &encoder->base);
1013 list_del(&encoder->head);
1014 dev->mode_config.num_encoder--;
1015 drm_modeset_unlock_all(dev);
1017 EXPORT_SYMBOL(drm_encoder_cleanup);
1020 * drm_plane_init - Initialise a new plane object
1022 * @plane: plane object to init
1023 * @possible_crtcs: bitmask of possible CRTCs
1024 * @funcs: callbacks for the new plane
1025 * @formats: array of supported formats (%DRM_FORMAT_*)
1026 * @format_count: number of elements in @formats
1027 * @priv: plane is private (hidden from userspace)?
1029 * Inits a preallocate plane object created as base part of a driver plane
1033 * Zero on success, error code on failure.
1035 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1036 unsigned long possible_crtcs,
1037 const struct drm_plane_funcs *funcs,
1038 const uint32_t *formats, uint32_t format_count,
1043 drm_modeset_lock_all(dev);
1045 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1049 plane->base.properties = &plane->properties;
1051 plane->funcs = funcs;
1052 plane->format_types = kmalloc(sizeof(uint32_t) * format_count,
1054 if (!plane->format_types) {
1055 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1056 drm_mode_object_put(dev, &plane->base);
1061 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1062 plane->format_count = format_count;
1063 plane->possible_crtcs = possible_crtcs;
1065 /* private planes are not exposed to userspace, but depending on
1066 * display hardware, might be convenient to allow sharing programming
1067 * for the scanout engine with the crtc implementation.
1070 list_add_tail(&plane->head, &dev->mode_config.plane_list);
1071 dev->mode_config.num_plane++;
1073 INIT_LIST_HEAD(&plane->head);
1077 drm_modeset_unlock_all(dev);
1081 EXPORT_SYMBOL(drm_plane_init);
1084 * drm_plane_cleanup - Clean up the core plane usage
1085 * @plane: plane to cleanup
1087 * This function cleans up @plane and removes it from the DRM mode setting
1088 * core. Note that the function does *not* free the plane structure itself,
1089 * this is the responsibility of the caller.
1091 void drm_plane_cleanup(struct drm_plane *plane)
1093 struct drm_device *dev = plane->dev;
1095 drm_modeset_lock_all(dev);
1096 kfree(plane->format_types);
1097 drm_mode_object_put(dev, &plane->base);
1098 /* if not added to a list, it must be a private plane */
1099 if (!list_empty(&plane->head)) {
1100 list_del(&plane->head);
1101 dev->mode_config.num_plane--;
1103 drm_modeset_unlock_all(dev);
1105 EXPORT_SYMBOL(drm_plane_cleanup);
1108 * drm_plane_force_disable - Forcibly disable a plane
1109 * @plane: plane to disable
1111 * Forces the plane to be disabled.
1113 * Used when the plane's current framebuffer is destroyed,
1114 * and when restoring fbdev mode.
1116 void drm_plane_force_disable(struct drm_plane *plane)
1123 ret = plane->funcs->disable_plane(plane);
1125 DRM_ERROR("failed to disable plane with busy fb\n");
1126 /* disconnect the plane from the fb and crtc: */
1127 __drm_framebuffer_unreference(plane->fb);
1131 EXPORT_SYMBOL(drm_plane_force_disable);
1134 * drm_mode_create - create a new display mode
1137 * Create a new drm_display_mode, give it an ID, and return it.
1140 * Pointer to new mode on success, NULL on error.
1142 struct drm_display_mode *drm_mode_create(struct drm_device *dev)
1144 struct drm_display_mode *nmode;
1146 nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
1150 if (drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE)) {
1157 EXPORT_SYMBOL(drm_mode_create);
1160 * drm_mode_destroy - remove a mode
1162 * @mode: mode to remove
1164 * Free @mode's unique identifier, then free it.
1166 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
1171 drm_mode_object_put(dev, &mode->base);
1175 EXPORT_SYMBOL(drm_mode_destroy);
1177 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
1179 struct drm_property *edid;
1180 struct drm_property *dpms;
1183 * Standard properties (apply to all connectors)
1185 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1186 DRM_MODE_PROP_IMMUTABLE,
1188 dev->mode_config.edid_property = edid;
1190 dpms = drm_property_create_enum(dev, 0,
1191 "DPMS", drm_dpms_enum_list,
1192 ARRAY_SIZE(drm_dpms_enum_list));
1193 dev->mode_config.dpms_property = dpms;
1199 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1202 * Called by a driver the first time a DVI-I connector is made.
1204 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1206 struct drm_property *dvi_i_selector;
1207 struct drm_property *dvi_i_subconnector;
1209 if (dev->mode_config.dvi_i_select_subconnector_property)
1213 drm_property_create_enum(dev, 0,
1214 "select subconnector",
1215 drm_dvi_i_select_enum_list,
1216 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1217 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1219 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1221 drm_dvi_i_subconnector_enum_list,
1222 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1223 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1227 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1230 * drm_create_tv_properties - create TV specific connector properties
1232 * @num_modes: number of different TV formats (modes) supported
1233 * @modes: array of pointers to strings containing name of each format
1235 * Called by a driver's TV initialization routine, this function creates
1236 * the TV specific connector properties for a given device. Caller is
1237 * responsible for allocating a list of format names and passing them to
1240 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
1243 struct drm_property *tv_selector;
1244 struct drm_property *tv_subconnector;
1247 if (dev->mode_config.tv_select_subconnector_property)
1251 * Basic connector properties
1253 tv_selector = drm_property_create_enum(dev, 0,
1254 "select subconnector",
1255 drm_tv_select_enum_list,
1256 ARRAY_SIZE(drm_tv_select_enum_list));
1257 dev->mode_config.tv_select_subconnector_property = tv_selector;
1260 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1262 drm_tv_subconnector_enum_list,
1263 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1264 dev->mode_config.tv_subconnector_property = tv_subconnector;
1267 * Other, TV specific properties: margins & TV modes.
1269 dev->mode_config.tv_left_margin_property =
1270 drm_property_create_range(dev, 0, "left margin", 0, 100);
1272 dev->mode_config.tv_right_margin_property =
1273 drm_property_create_range(dev, 0, "right margin", 0, 100);
1275 dev->mode_config.tv_top_margin_property =
1276 drm_property_create_range(dev, 0, "top margin", 0, 100);
1278 dev->mode_config.tv_bottom_margin_property =
1279 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1281 dev->mode_config.tv_mode_property =
1282 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1284 for (i = 0; i < num_modes; i++)
1285 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1288 dev->mode_config.tv_brightness_property =
1289 drm_property_create_range(dev, 0, "brightness", 0, 100);
1291 dev->mode_config.tv_contrast_property =
1292 drm_property_create_range(dev, 0, "contrast", 0, 100);
1294 dev->mode_config.tv_flicker_reduction_property =
1295 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1297 dev->mode_config.tv_overscan_property =
1298 drm_property_create_range(dev, 0, "overscan", 0, 100);
1300 dev->mode_config.tv_saturation_property =
1301 drm_property_create_range(dev, 0, "saturation", 0, 100);
1303 dev->mode_config.tv_hue_property =
1304 drm_property_create_range(dev, 0, "hue", 0, 100);
1308 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1311 * drm_mode_create_scaling_mode_property - create scaling mode property
1314 * Called by a driver the first time it's needed, must be attached to desired
1317 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1319 struct drm_property *scaling_mode;
1321 if (dev->mode_config.scaling_mode_property)
1325 drm_property_create_enum(dev, 0, "scaling mode",
1326 drm_scaling_mode_enum_list,
1327 ARRAY_SIZE(drm_scaling_mode_enum_list));
1329 dev->mode_config.scaling_mode_property = scaling_mode;
1333 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1336 * drm_mode_create_dirty_property - create dirty property
1339 * Called by a driver the first time it's needed, must be attached to desired
1342 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1344 struct drm_property *dirty_info;
1346 if (dev->mode_config.dirty_info_property)
1350 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1352 drm_dirty_info_enum_list,
1353 ARRAY_SIZE(drm_dirty_info_enum_list));
1354 dev->mode_config.dirty_info_property = dirty_info;
1358 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1360 static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
1362 uint32_t total_objects = 0;
1364 total_objects += dev->mode_config.num_crtc;
1365 total_objects += dev->mode_config.num_connector;
1366 total_objects += dev->mode_config.num_encoder;
1367 total_objects += dev->mode_config.num_bridge;
1369 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
1370 if (!group->id_list)
1373 group->num_crtcs = 0;
1374 group->num_connectors = 0;
1375 group->num_encoders = 0;
1376 group->num_bridges = 0;
1381 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1382 * the drm core's responsibility to set up mode control groups.
1384 int drm_mode_group_init_legacy_group(struct drm_device *dev,
1385 struct drm_mode_group *group)
1387 struct drm_crtc *crtc;
1388 struct drm_encoder *encoder;
1389 struct drm_connector *connector;
1390 struct drm_bridge *bridge;
1393 if ((ret = drm_mode_group_init(dev, group)))
1396 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1397 group->id_list[group->num_crtcs++] = crtc->base.id;
1399 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1400 group->id_list[group->num_crtcs + group->num_encoders++] =
1403 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1404 group->id_list[group->num_crtcs + group->num_encoders +
1405 group->num_connectors++] = connector->base.id;
1407 list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
1408 group->id_list[group->num_crtcs + group->num_encoders +
1409 group->num_connectors + group->num_bridges++] =
1414 EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
1417 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1418 * @out: drm_mode_modeinfo struct to return to the user
1419 * @in: drm_display_mode to use
1421 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1424 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1425 const struct drm_display_mode *in)
1427 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1428 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1429 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1430 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1431 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1432 "timing values too large for mode info\n");
1434 out->clock = in->clock;
1435 out->hdisplay = in->hdisplay;
1436 out->hsync_start = in->hsync_start;
1437 out->hsync_end = in->hsync_end;
1438 out->htotal = in->htotal;
1439 out->hskew = in->hskew;
1440 out->vdisplay = in->vdisplay;
1441 out->vsync_start = in->vsync_start;
1442 out->vsync_end = in->vsync_end;
1443 out->vtotal = in->vtotal;
1444 out->vscan = in->vscan;
1445 out->vrefresh = in->vrefresh;
1446 out->flags = in->flags;
1447 out->type = in->type;
1448 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1449 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1453 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1454 * @out: drm_display_mode to return to the user
1455 * @in: drm_mode_modeinfo to use
1457 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1461 * Zero on success, errno on failure.
1463 static int drm_crtc_convert_umode(struct drm_display_mode *out,
1464 const struct drm_mode_modeinfo *in)
1466 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1469 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1472 out->clock = in->clock;
1473 out->hdisplay = in->hdisplay;
1474 out->hsync_start = in->hsync_start;
1475 out->hsync_end = in->hsync_end;
1476 out->htotal = in->htotal;
1477 out->hskew = in->hskew;
1478 out->vdisplay = in->vdisplay;
1479 out->vsync_start = in->vsync_start;
1480 out->vsync_end = in->vsync_end;
1481 out->vtotal = in->vtotal;
1482 out->vscan = in->vscan;
1483 out->vrefresh = in->vrefresh;
1484 out->flags = in->flags;
1485 out->type = in->type;
1486 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1487 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1493 * drm_mode_getresources - get graphics configuration
1494 * @dev: drm device for the ioctl
1495 * @data: data pointer for the ioctl
1496 * @file_priv: drm file for the ioctl call
1498 * Construct a set of configuration description structures and return
1499 * them to the user, including CRTC, connector and framebuffer configuration.
1501 * Called by the user via ioctl.
1504 * Zero on success, errno on failure.
1506 int drm_mode_getresources(struct drm_device *dev, void *data,
1507 struct drm_file *file_priv)
1509 struct drm_mode_card_res *card_res = data;
1510 struct list_head *lh;
1511 struct drm_framebuffer *fb;
1512 struct drm_connector *connector;
1513 struct drm_crtc *crtc;
1514 struct drm_encoder *encoder;
1516 int connector_count = 0;
1519 int encoder_count = 0;
1521 uint32_t __user *fb_id;
1522 uint32_t __user *crtc_id;
1523 uint32_t __user *connector_id;
1524 uint32_t __user *encoder_id;
1525 struct drm_mode_group *mode_group;
1527 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1531 mutex_lock(&file_priv->fbs_lock);
1533 * For the non-control nodes we need to limit the list of resources
1534 * by IDs in the group list for this node
1536 list_for_each(lh, &file_priv->fbs)
1539 /* handle this in 4 parts */
1541 if (card_res->count_fbs >= fb_count) {
1543 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1544 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1545 if (put_user(fb->base.id, fb_id + copied)) {
1546 mutex_unlock(&file_priv->fbs_lock);
1552 card_res->count_fbs = fb_count;
1553 mutex_unlock(&file_priv->fbs_lock);
1555 drm_modeset_lock_all(dev);
1556 if (!drm_is_primary_client(file_priv)) {
1559 list_for_each(lh, &dev->mode_config.crtc_list)
1562 list_for_each(lh, &dev->mode_config.connector_list)
1565 list_for_each(lh, &dev->mode_config.encoder_list)
1569 mode_group = &file_priv->master->minor->mode_group;
1570 crtc_count = mode_group->num_crtcs;
1571 connector_count = mode_group->num_connectors;
1572 encoder_count = mode_group->num_encoders;
1575 card_res->max_height = dev->mode_config.max_height;
1576 card_res->min_height = dev->mode_config.min_height;
1577 card_res->max_width = dev->mode_config.max_width;
1578 card_res->min_width = dev->mode_config.min_width;
1581 if (card_res->count_crtcs >= crtc_count) {
1583 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1585 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1587 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1588 if (put_user(crtc->base.id, crtc_id + copied)) {
1595 for (i = 0; i < mode_group->num_crtcs; i++) {
1596 if (put_user(mode_group->id_list[i],
1597 crtc_id + copied)) {
1605 card_res->count_crtcs = crtc_count;
1608 if (card_res->count_encoders >= encoder_count) {
1610 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1612 list_for_each_entry(encoder,
1613 &dev->mode_config.encoder_list,
1615 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1616 drm_get_encoder_name(encoder));
1617 if (put_user(encoder->base.id, encoder_id +
1625 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1626 if (put_user(mode_group->id_list[i],
1627 encoder_id + copied)) {
1636 card_res->count_encoders = encoder_count;
1639 if (card_res->count_connectors >= connector_count) {
1641 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1643 list_for_each_entry(connector,
1644 &dev->mode_config.connector_list,
1646 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1648 drm_get_connector_name(connector));
1649 if (put_user(connector->base.id,
1650 connector_id + copied)) {
1657 int start = mode_group->num_crtcs +
1658 mode_group->num_encoders;
1659 for (i = start; i < start + mode_group->num_connectors; i++) {
1660 if (put_user(mode_group->id_list[i],
1661 connector_id + copied)) {
1669 card_res->count_connectors = connector_count;
1671 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1672 card_res->count_connectors, card_res->count_encoders);
1675 drm_modeset_unlock_all(dev);
1680 * drm_mode_getcrtc - get CRTC configuration
1681 * @dev: drm device for the ioctl
1682 * @data: data pointer for the ioctl
1683 * @file_priv: drm file for the ioctl call
1685 * Construct a CRTC configuration structure to return to the user.
1687 * Called by the user via ioctl.
1690 * Zero on success, errno on failure.
1692 int drm_mode_getcrtc(struct drm_device *dev,
1693 void *data, struct drm_file *file_priv)
1695 struct drm_mode_crtc *crtc_resp = data;
1696 struct drm_crtc *crtc;
1697 struct drm_mode_object *obj;
1700 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1703 drm_modeset_lock_all(dev);
1705 obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1706 DRM_MODE_OBJECT_CRTC);
1711 crtc = obj_to_crtc(obj);
1713 crtc_resp->x = crtc->x;
1714 crtc_resp->y = crtc->y;
1715 crtc_resp->gamma_size = crtc->gamma_size;
1717 crtc_resp->fb_id = crtc->fb->base.id;
1719 crtc_resp->fb_id = 0;
1721 if (crtc->enabled) {
1723 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1724 crtc_resp->mode_valid = 1;
1727 crtc_resp->mode_valid = 0;
1731 drm_modeset_unlock_all(dev);
1735 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1736 const struct drm_file *file_priv)
1739 * If user-space hasn't configured the driver to expose the stereo 3D
1740 * modes, don't expose them.
1742 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1749 * drm_mode_getconnector - get connector configuration
1750 * @dev: drm device for the ioctl
1751 * @data: data pointer for the ioctl
1752 * @file_priv: drm file for the ioctl call
1754 * Construct a connector configuration structure to return to the user.
1756 * Called by the user via ioctl.
1759 * Zero on success, errno on failure.
1761 int drm_mode_getconnector(struct drm_device *dev, void *data,
1762 struct drm_file *file_priv)
1764 struct drm_mode_get_connector *out_resp = data;
1765 struct drm_mode_object *obj;
1766 struct drm_connector *connector;
1767 struct drm_display_mode *mode;
1769 int props_count = 0;
1770 int encoders_count = 0;
1774 struct drm_mode_modeinfo u_mode;
1775 struct drm_mode_modeinfo __user *mode_ptr;
1776 uint32_t __user *prop_ptr;
1777 uint64_t __user *prop_values;
1778 uint32_t __user *encoder_ptr;
1780 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1783 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1785 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1787 mutex_lock(&dev->mode_config.mutex);
1789 obj = drm_mode_object_find(dev, out_resp->connector_id,
1790 DRM_MODE_OBJECT_CONNECTOR);
1795 connector = obj_to_connector(obj);
1797 props_count = connector->properties.count;
1799 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1800 if (connector->encoder_ids[i] != 0) {
1805 if (out_resp->count_modes == 0) {
1806 connector->funcs->fill_modes(connector,
1807 dev->mode_config.max_width,
1808 dev->mode_config.max_height);
1811 /* delayed so we get modes regardless of pre-fill_modes state */
1812 list_for_each_entry(mode, &connector->modes, head)
1813 if (drm_mode_expose_to_userspace(mode, file_priv))
1816 out_resp->connector_id = connector->base.id;
1817 out_resp->connector_type = connector->connector_type;
1818 out_resp->connector_type_id = connector->connector_type_id;
1819 out_resp->mm_width = connector->display_info.width_mm;
1820 out_resp->mm_height = connector->display_info.height_mm;
1821 out_resp->subpixel = connector->display_info.subpixel_order;
1822 out_resp->connection = connector->status;
1823 if (connector->encoder)
1824 out_resp->encoder_id = connector->encoder->base.id;
1826 out_resp->encoder_id = 0;
1829 * This ioctl is called twice, once to determine how much space is
1830 * needed, and the 2nd time to fill it.
1832 if ((out_resp->count_modes >= mode_count) && mode_count) {
1834 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
1835 list_for_each_entry(mode, &connector->modes, head) {
1836 if (!drm_mode_expose_to_userspace(mode, file_priv))
1839 drm_crtc_convert_to_umode(&u_mode, mode);
1840 if (copy_to_user(mode_ptr + copied,
1841 &u_mode, sizeof(u_mode))) {
1848 out_resp->count_modes = mode_count;
1850 if ((out_resp->count_props >= props_count) && props_count) {
1852 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
1853 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
1854 for (i = 0; i < connector->properties.count; i++) {
1855 if (put_user(connector->properties.ids[i],
1856 prop_ptr + copied)) {
1861 if (put_user(connector->properties.values[i],
1862 prop_values + copied)) {
1869 out_resp->count_props = props_count;
1871 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1873 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
1874 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1875 if (connector->encoder_ids[i] != 0) {
1876 if (put_user(connector->encoder_ids[i],
1877 encoder_ptr + copied)) {
1885 out_resp->count_encoders = encoders_count;
1888 mutex_unlock(&dev->mode_config.mutex);
1894 * drm_mode_getencoder - get encoder configuration
1895 * @dev: drm device for the ioctl
1896 * @data: data pointer for the ioctl
1897 * @file_priv: drm file for the ioctl call
1899 * Construct a encoder configuration structure to return to the user.
1901 * Called by the user via ioctl.
1904 * Zero on success, errno on failure.
1906 int drm_mode_getencoder(struct drm_device *dev, void *data,
1907 struct drm_file *file_priv)
1909 struct drm_mode_get_encoder *enc_resp = data;
1910 struct drm_mode_object *obj;
1911 struct drm_encoder *encoder;
1914 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1917 drm_modeset_lock_all(dev);
1918 obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1919 DRM_MODE_OBJECT_ENCODER);
1924 encoder = obj_to_encoder(obj);
1927 enc_resp->crtc_id = encoder->crtc->base.id;
1929 enc_resp->crtc_id = 0;
1930 enc_resp->encoder_type = encoder->encoder_type;
1931 enc_resp->encoder_id = encoder->base.id;
1932 enc_resp->possible_crtcs = encoder->possible_crtcs;
1933 enc_resp->possible_clones = encoder->possible_clones;
1936 drm_modeset_unlock_all(dev);
1941 * drm_mode_getplane_res - enumerate all plane resources
1944 * @file_priv: DRM file info
1946 * Construct a list of plane ids to return to the user.
1948 * Called by the user via ioctl.
1951 * Zero on success, errno on failure.
1953 int drm_mode_getplane_res(struct drm_device *dev, void *data,
1954 struct drm_file *file_priv)
1956 struct drm_mode_get_plane_res *plane_resp = data;
1957 struct drm_mode_config *config;
1958 struct drm_plane *plane;
1959 uint32_t __user *plane_ptr;
1960 int copied = 0, ret = 0;
1962 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1965 drm_modeset_lock_all(dev);
1966 config = &dev->mode_config;
1969 * This ioctl is called twice, once to determine how much space is
1970 * needed, and the 2nd time to fill it.
1972 if (config->num_plane &&
1973 (plane_resp->count_planes >= config->num_plane)) {
1974 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
1976 list_for_each_entry(plane, &config->plane_list, head) {
1977 if (put_user(plane->base.id, plane_ptr + copied)) {
1984 plane_resp->count_planes = config->num_plane;
1987 drm_modeset_unlock_all(dev);
1992 * drm_mode_getplane - get plane configuration
1995 * @file_priv: DRM file info
1997 * Construct a plane configuration structure to return to the user.
1999 * Called by the user via ioctl.
2002 * Zero on success, errno on failure.
2004 int drm_mode_getplane(struct drm_device *dev, void *data,
2005 struct drm_file *file_priv)
2007 struct drm_mode_get_plane *plane_resp = data;
2008 struct drm_mode_object *obj;
2009 struct drm_plane *plane;
2010 uint32_t __user *format_ptr;
2013 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2016 drm_modeset_lock_all(dev);
2017 obj = drm_mode_object_find(dev, plane_resp->plane_id,
2018 DRM_MODE_OBJECT_PLANE);
2023 plane = obj_to_plane(obj);
2026 plane_resp->crtc_id = plane->crtc->base.id;
2028 plane_resp->crtc_id = 0;
2031 plane_resp->fb_id = plane->fb->base.id;
2033 plane_resp->fb_id = 0;
2035 plane_resp->plane_id = plane->base.id;
2036 plane_resp->possible_crtcs = plane->possible_crtcs;
2037 plane_resp->gamma_size = 0;
2040 * This ioctl is called twice, once to determine how much space is
2041 * needed, and the 2nd time to fill it.
2043 if (plane->format_count &&
2044 (plane_resp->count_format_types >= plane->format_count)) {
2045 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2046 if (copy_to_user(format_ptr,
2047 plane->format_types,
2048 sizeof(uint32_t) * plane->format_count)) {
2053 plane_resp->count_format_types = plane->format_count;
2056 drm_modeset_unlock_all(dev);
2061 * drm_mode_setplane - configure a plane's configuration
2063 * @data: ioctl data*
2064 * @file_priv: DRM file info
2066 * Set plane configuration, including placement, fb, scaling, and other factors.
2067 * Or pass a NULL fb to disable.
2070 * Zero on success, errno on failure.
2072 int drm_mode_setplane(struct drm_device *dev, void *data,
2073 struct drm_file *file_priv)
2075 struct drm_mode_set_plane *plane_req = data;
2076 struct drm_mode_object *obj;
2077 struct drm_plane *plane;
2078 struct drm_crtc *crtc;
2079 struct drm_framebuffer *fb = NULL, *old_fb = NULL;
2081 unsigned int fb_width, fb_height;
2084 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2088 * First, find the plane, crtc, and fb objects. If not available,
2089 * we don't bother to call the driver.
2091 obj = drm_mode_object_find(dev, plane_req->plane_id,
2092 DRM_MODE_OBJECT_PLANE);
2094 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2095 plane_req->plane_id);
2098 plane = obj_to_plane(obj);
2100 /* No fb means shut it down */
2101 if (!plane_req->fb_id) {
2102 drm_modeset_lock_all(dev);
2104 plane->funcs->disable_plane(plane);
2107 drm_modeset_unlock_all(dev);
2111 obj = drm_mode_object_find(dev, plane_req->crtc_id,
2112 DRM_MODE_OBJECT_CRTC);
2114 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2115 plane_req->crtc_id);
2119 crtc = obj_to_crtc(obj);
2121 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2123 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2129 /* Check whether this plane supports the fb pixel format. */
2130 for (i = 0; i < plane->format_count; i++)
2131 if (fb->pixel_format == plane->format_types[i])
2133 if (i == plane->format_count) {
2134 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2135 drm_get_format_name(fb->pixel_format));
2140 fb_width = fb->width << 16;
2141 fb_height = fb->height << 16;
2143 /* Make sure source coordinates are inside the fb. */
2144 if (plane_req->src_w > fb_width ||
2145 plane_req->src_x > fb_width - plane_req->src_w ||
2146 plane_req->src_h > fb_height ||
2147 plane_req->src_y > fb_height - plane_req->src_h) {
2148 DRM_DEBUG_KMS("Invalid source coordinates "
2149 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2150 plane_req->src_w >> 16,
2151 ((plane_req->src_w & 0xffff) * 15625) >> 10,
2152 plane_req->src_h >> 16,
2153 ((plane_req->src_h & 0xffff) * 15625) >> 10,
2154 plane_req->src_x >> 16,
2155 ((plane_req->src_x & 0xffff) * 15625) >> 10,
2156 plane_req->src_y >> 16,
2157 ((plane_req->src_y & 0xffff) * 15625) >> 10);
2162 /* Give drivers some help against integer overflows */
2163 if (plane_req->crtc_w > INT_MAX ||
2164 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2165 plane_req->crtc_h > INT_MAX ||
2166 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2167 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2168 plane_req->crtc_w, plane_req->crtc_h,
2169 plane_req->crtc_x, plane_req->crtc_y);
2174 drm_modeset_lock_all(dev);
2175 ret = plane->funcs->update_plane(plane, crtc, fb,
2176 plane_req->crtc_x, plane_req->crtc_y,
2177 plane_req->crtc_w, plane_req->crtc_h,
2178 plane_req->src_x, plane_req->src_y,
2179 plane_req->src_w, plane_req->src_h);
2186 drm_modeset_unlock_all(dev);
2190 drm_framebuffer_unreference(fb);
2192 drm_framebuffer_unreference(old_fb);
2198 * drm_mode_set_config_internal - helper to call ->set_config
2199 * @set: modeset config to set
2201 * This is a little helper to wrap internal calls to the ->set_config driver
2202 * interface. The only thing it adds is correct refcounting dance.
2205 * Zero on success, errno on failure.
2207 int drm_mode_set_config_internal(struct drm_mode_set *set)
2209 struct drm_crtc *crtc = set->crtc;
2210 struct drm_framebuffer *fb;
2211 struct drm_crtc *tmp;
2215 * NOTE: ->set_config can also disable other crtcs (if we steal all
2216 * connectors from it), hence we need to refcount the fbs across all
2217 * crtcs. Atomic modeset will have saner semantics ...
2219 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
2220 tmp->old_fb = tmp->fb;
2224 ret = crtc->funcs->set_config(set);
2226 /* crtc->fb must be updated by ->set_config, enforces this. */
2227 WARN_ON(fb != crtc->fb);
2230 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
2232 drm_framebuffer_reference(tmp->fb);
2234 drm_framebuffer_unreference(tmp->old_fb);
2239 EXPORT_SYMBOL(drm_mode_set_config_internal);
2242 * Checks that the framebuffer is big enough for the CRTC viewport
2243 * (x, y, hdisplay, vdisplay)
2245 static int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2247 const struct drm_display_mode *mode,
2248 const struct drm_framebuffer *fb)
2251 int hdisplay, vdisplay;
2253 hdisplay = mode->hdisplay;
2254 vdisplay = mode->vdisplay;
2256 if (drm_mode_is_stereo(mode)) {
2257 struct drm_display_mode adjusted = *mode;
2259 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE);
2260 hdisplay = adjusted.crtc_hdisplay;
2261 vdisplay = adjusted.crtc_vdisplay;
2264 if (crtc->invert_dimensions)
2265 swap(hdisplay, vdisplay);
2267 if (hdisplay > fb->width ||
2268 vdisplay > fb->height ||
2269 x > fb->width - hdisplay ||
2270 y > fb->height - vdisplay) {
2271 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2272 fb->width, fb->height, hdisplay, vdisplay, x, y,
2273 crtc->invert_dimensions ? " (inverted)" : "");
2281 * drm_mode_setcrtc - set CRTC configuration
2282 * @dev: drm device for the ioctl
2283 * @data: data pointer for the ioctl
2284 * @file_priv: drm file for the ioctl call
2286 * Build a new CRTC configuration based on user request.
2288 * Called by the user via ioctl.
2291 * Zero on success, errno on failure.
2293 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2294 struct drm_file *file_priv)
2296 struct drm_mode_config *config = &dev->mode_config;
2297 struct drm_mode_crtc *crtc_req = data;
2298 struct drm_mode_object *obj;
2299 struct drm_crtc *crtc;
2300 struct drm_connector **connector_set = NULL, *connector;
2301 struct drm_framebuffer *fb = NULL;
2302 struct drm_display_mode *mode = NULL;
2303 struct drm_mode_set set;
2304 uint32_t __user *set_connectors_ptr;
2308 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2311 /* For some reason crtc x/y offsets are signed internally. */
2312 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2315 drm_modeset_lock_all(dev);
2316 obj = drm_mode_object_find(dev, crtc_req->crtc_id,
2317 DRM_MODE_OBJECT_CRTC);
2319 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2323 crtc = obj_to_crtc(obj);
2324 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2326 if (crtc_req->mode_valid) {
2327 /* If we have a mode we need a framebuffer. */
2328 /* If we pass -1, set the mode with the currently bound fb */
2329 if (crtc_req->fb_id == -1) {
2331 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2336 /* Make refcounting symmetric with the lookup path. */
2337 drm_framebuffer_reference(fb);
2339 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2341 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2348 mode = drm_mode_create(dev);
2354 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2356 DRM_DEBUG_KMS("Invalid mode\n");
2360 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2362 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2369 if (crtc_req->count_connectors == 0 && mode) {
2370 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2375 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2376 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2377 crtc_req->count_connectors);
2382 if (crtc_req->count_connectors > 0) {
2385 /* Avoid unbounded kernel memory allocation */
2386 if (crtc_req->count_connectors > config->num_connector) {
2391 connector_set = kmalloc(crtc_req->count_connectors *
2392 sizeof(struct drm_connector *),
2394 if (!connector_set) {
2399 for (i = 0; i < crtc_req->count_connectors; i++) {
2400 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2401 if (get_user(out_id, &set_connectors_ptr[i])) {
2406 obj = drm_mode_object_find(dev, out_id,
2407 DRM_MODE_OBJECT_CONNECTOR);
2409 DRM_DEBUG_KMS("Connector id %d unknown\n",
2414 connector = obj_to_connector(obj);
2415 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2417 drm_get_connector_name(connector));
2419 connector_set[i] = connector;
2424 set.x = crtc_req->x;
2425 set.y = crtc_req->y;
2427 set.connectors = connector_set;
2428 set.num_connectors = crtc_req->count_connectors;
2430 ret = drm_mode_set_config_internal(&set);
2434 drm_framebuffer_unreference(fb);
2436 kfree(connector_set);
2437 drm_mode_destroy(dev, mode);
2438 drm_modeset_unlock_all(dev);
2442 static int drm_mode_cursor_common(struct drm_device *dev,
2443 struct drm_mode_cursor2 *req,
2444 struct drm_file *file_priv)
2446 struct drm_mode_object *obj;
2447 struct drm_crtc *crtc;
2450 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2453 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2456 obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
2458 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2461 crtc = obj_to_crtc(obj);
2463 mutex_lock(&crtc->mutex);
2464 if (req->flags & DRM_MODE_CURSOR_BO) {
2465 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
2469 /* Turns off the cursor if handle is 0 */
2470 if (crtc->funcs->cursor_set2)
2471 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2472 req->width, req->height, req->hot_x, req->hot_y);
2474 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2475 req->width, req->height);
2478 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2479 if (crtc->funcs->cursor_move) {
2480 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2487 mutex_unlock(&crtc->mutex);
2495 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2496 * @dev: drm device for the ioctl
2497 * @data: data pointer for the ioctl
2498 * @file_priv: drm file for the ioctl call
2500 * Set the cursor configuration based on user request.
2502 * Called by the user via ioctl.
2505 * Zero on success, errno on failure.
2507 int drm_mode_cursor_ioctl(struct drm_device *dev,
2508 void *data, struct drm_file *file_priv)
2510 struct drm_mode_cursor *req = data;
2511 struct drm_mode_cursor2 new_req;
2513 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2514 new_req.hot_x = new_req.hot_y = 0;
2516 return drm_mode_cursor_common(dev, &new_req, file_priv);
2520 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2521 * @dev: drm device for the ioctl
2522 * @data: data pointer for the ioctl
2523 * @file_priv: drm file for the ioctl call
2525 * Set the cursor configuration based on user request. This implements the 2nd
2526 * version of the cursor ioctl, which allows userspace to additionally specify
2527 * the hotspot of the pointer.
2529 * Called by the user via ioctl.
2532 * Zero on success, errno on failure.
2534 int drm_mode_cursor2_ioctl(struct drm_device *dev,
2535 void *data, struct drm_file *file_priv)
2537 struct drm_mode_cursor2 *req = data;
2538 return drm_mode_cursor_common(dev, req, file_priv);
2542 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2543 * @bpp: bits per pixels
2544 * @depth: bit depth per pixel
2546 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2547 * Useful in fbdev emulation code, since that deals in those values.
2549 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2555 fmt = DRM_FORMAT_C8;
2559 fmt = DRM_FORMAT_XRGB1555;
2561 fmt = DRM_FORMAT_RGB565;
2564 fmt = DRM_FORMAT_RGB888;
2568 fmt = DRM_FORMAT_XRGB8888;
2569 else if (depth == 30)
2570 fmt = DRM_FORMAT_XRGB2101010;
2572 fmt = DRM_FORMAT_ARGB8888;
2575 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2576 fmt = DRM_FORMAT_XRGB8888;
2582 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
2585 * drm_mode_addfb - add an FB to the graphics configuration
2586 * @dev: drm device for the ioctl
2587 * @data: data pointer for the ioctl
2588 * @file_priv: drm file for the ioctl call
2590 * Add a new FB to the specified CRTC, given a user request. This is the
2591 * original addfb ioclt which only supported RGB formats.
2593 * Called by the user via ioctl.
2596 * Zero on success, errno on failure.
2598 int drm_mode_addfb(struct drm_device *dev,
2599 void *data, struct drm_file *file_priv)
2601 struct drm_mode_fb_cmd *or = data;
2602 struct drm_mode_fb_cmd2 r = {};
2603 struct drm_mode_config *config = &dev->mode_config;
2604 struct drm_framebuffer *fb;
2607 /* Use new struct with format internally */
2608 r.fb_id = or->fb_id;
2609 r.width = or->width;
2610 r.height = or->height;
2611 r.pitches[0] = or->pitch;
2612 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
2613 r.handles[0] = or->handle;
2615 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2618 if ((config->min_width > r.width) || (r.width > config->max_width))
2621 if ((config->min_height > r.height) || (r.height > config->max_height))
2624 fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r);
2626 DRM_DEBUG_KMS("could not create framebuffer\n");
2630 mutex_lock(&file_priv->fbs_lock);
2631 or->fb_id = fb->base.id;
2632 list_add(&fb->filp_head, &file_priv->fbs);
2633 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2634 mutex_unlock(&file_priv->fbs_lock);
2639 static int format_check(const struct drm_mode_fb_cmd2 *r)
2641 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
2645 case DRM_FORMAT_RGB332:
2646 case DRM_FORMAT_BGR233:
2647 case DRM_FORMAT_XRGB4444:
2648 case DRM_FORMAT_XBGR4444:
2649 case DRM_FORMAT_RGBX4444:
2650 case DRM_FORMAT_BGRX4444:
2651 case DRM_FORMAT_ARGB4444:
2652 case DRM_FORMAT_ABGR4444:
2653 case DRM_FORMAT_RGBA4444:
2654 case DRM_FORMAT_BGRA4444:
2655 case DRM_FORMAT_XRGB1555:
2656 case DRM_FORMAT_XBGR1555:
2657 case DRM_FORMAT_RGBX5551:
2658 case DRM_FORMAT_BGRX5551:
2659 case DRM_FORMAT_ARGB1555:
2660 case DRM_FORMAT_ABGR1555:
2661 case DRM_FORMAT_RGBA5551:
2662 case DRM_FORMAT_BGRA5551:
2663 case DRM_FORMAT_RGB565:
2664 case DRM_FORMAT_BGR565:
2665 case DRM_FORMAT_RGB888:
2666 case DRM_FORMAT_BGR888:
2667 case DRM_FORMAT_XRGB8888:
2668 case DRM_FORMAT_XBGR8888:
2669 case DRM_FORMAT_RGBX8888:
2670 case DRM_FORMAT_BGRX8888:
2671 case DRM_FORMAT_ARGB8888:
2672 case DRM_FORMAT_ABGR8888:
2673 case DRM_FORMAT_RGBA8888:
2674 case DRM_FORMAT_BGRA8888:
2675 case DRM_FORMAT_XRGB2101010:
2676 case DRM_FORMAT_XBGR2101010:
2677 case DRM_FORMAT_RGBX1010102:
2678 case DRM_FORMAT_BGRX1010102:
2679 case DRM_FORMAT_ARGB2101010:
2680 case DRM_FORMAT_ABGR2101010:
2681 case DRM_FORMAT_RGBA1010102:
2682 case DRM_FORMAT_BGRA1010102:
2683 case DRM_FORMAT_YUYV:
2684 case DRM_FORMAT_YVYU:
2685 case DRM_FORMAT_UYVY:
2686 case DRM_FORMAT_VYUY:
2687 case DRM_FORMAT_AYUV:
2688 case DRM_FORMAT_NV12:
2689 case DRM_FORMAT_NV21:
2690 case DRM_FORMAT_NV16:
2691 case DRM_FORMAT_NV61:
2692 case DRM_FORMAT_NV24:
2693 case DRM_FORMAT_NV42:
2694 case DRM_FORMAT_YUV410:
2695 case DRM_FORMAT_YVU410:
2696 case DRM_FORMAT_YUV411:
2697 case DRM_FORMAT_YVU411:
2698 case DRM_FORMAT_YUV420:
2699 case DRM_FORMAT_YVU420:
2700 case DRM_FORMAT_YUV422:
2701 case DRM_FORMAT_YVU422:
2702 case DRM_FORMAT_YUV444:
2703 case DRM_FORMAT_YVU444:
2706 DRM_DEBUG_KMS("invalid pixel format %s\n",
2707 drm_get_format_name(r->pixel_format));
2712 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
2714 int ret, hsub, vsub, num_planes, i;
2716 ret = format_check(r);
2718 DRM_DEBUG_KMS("bad framebuffer format %s\n",
2719 drm_get_format_name(r->pixel_format));
2723 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
2724 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
2725 num_planes = drm_format_num_planes(r->pixel_format);
2727 if (r->width == 0 || r->width % hsub) {
2728 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->height);
2732 if (r->height == 0 || r->height % vsub) {
2733 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
2737 for (i = 0; i < num_planes; i++) {
2738 unsigned int width = r->width / (i != 0 ? hsub : 1);
2739 unsigned int height = r->height / (i != 0 ? vsub : 1);
2740 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
2742 if (!r->handles[i]) {
2743 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
2747 if ((uint64_t) width * cpp > UINT_MAX)
2750 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
2753 if (r->pitches[i] < width * cpp) {
2754 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
2763 * drm_mode_addfb2 - add an FB to the graphics configuration
2764 * @dev: drm device for the ioctl
2765 * @data: data pointer for the ioctl
2766 * @file_priv: drm file for the ioctl call
2768 * Add a new FB to the specified CRTC, given a user request with format. This is
2769 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
2770 * and uses fourcc codes as pixel format specifiers.
2772 * Called by the user via ioctl.
2775 * Zero on success, errno on failure.
2777 int drm_mode_addfb2(struct drm_device *dev,
2778 void *data, struct drm_file *file_priv)
2780 struct drm_mode_fb_cmd2 *r = data;
2781 struct drm_mode_config *config = &dev->mode_config;
2782 struct drm_framebuffer *fb;
2785 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2788 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
2789 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
2793 if ((config->min_width > r->width) || (r->width > config->max_width)) {
2794 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
2795 r->width, config->min_width, config->max_width);
2798 if ((config->min_height > r->height) || (r->height > config->max_height)) {
2799 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
2800 r->height, config->min_height, config->max_height);
2804 ret = framebuffer_check(r);
2808 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
2810 DRM_DEBUG_KMS("could not create framebuffer\n");
2814 mutex_lock(&file_priv->fbs_lock);
2815 r->fb_id = fb->base.id;
2816 list_add(&fb->filp_head, &file_priv->fbs);
2817 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2818 mutex_unlock(&file_priv->fbs_lock);
2825 * drm_mode_rmfb - remove an FB from the configuration
2826 * @dev: drm device for the ioctl
2827 * @data: data pointer for the ioctl
2828 * @file_priv: drm file for the ioctl call
2830 * Remove the FB specified by the user.
2832 * Called by the user via ioctl.
2835 * Zero on success, errno on failure.
2837 int drm_mode_rmfb(struct drm_device *dev,
2838 void *data, struct drm_file *file_priv)
2840 struct drm_framebuffer *fb = NULL;
2841 struct drm_framebuffer *fbl = NULL;
2842 uint32_t *id = data;
2845 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2848 mutex_lock(&file_priv->fbs_lock);
2849 mutex_lock(&dev->mode_config.fb_lock);
2850 fb = __drm_framebuffer_lookup(dev, *id);
2854 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
2860 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
2861 __drm_framebuffer_unregister(dev, fb);
2863 list_del_init(&fb->filp_head);
2864 mutex_unlock(&dev->mode_config.fb_lock);
2865 mutex_unlock(&file_priv->fbs_lock);
2867 drm_framebuffer_remove(fb);
2872 mutex_unlock(&dev->mode_config.fb_lock);
2873 mutex_unlock(&file_priv->fbs_lock);
2879 * drm_mode_getfb - get FB info
2880 * @dev: drm device for the ioctl
2881 * @data: data pointer for the ioctl
2882 * @file_priv: drm file for the ioctl call
2884 * Lookup the FB given its ID and return info about it.
2886 * Called by the user via ioctl.
2889 * Zero on success, errno on failure.
2891 int drm_mode_getfb(struct drm_device *dev,
2892 void *data, struct drm_file *file_priv)
2894 struct drm_mode_fb_cmd *r = data;
2895 struct drm_framebuffer *fb;
2898 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2901 fb = drm_framebuffer_lookup(dev, r->fb_id);
2905 r->height = fb->height;
2906 r->width = fb->width;
2907 r->depth = fb->depth;
2908 r->bpp = fb->bits_per_pixel;
2909 r->pitch = fb->pitches[0];
2910 if (fb->funcs->create_handle) {
2911 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
2912 drm_is_control_client(file_priv)) {
2913 ret = fb->funcs->create_handle(fb, file_priv,
2916 /* GET_FB() is an unprivileged ioctl so we must not
2917 * return a buffer-handle to non-master processes! For
2918 * backwards-compatibility reasons, we cannot make
2919 * GET_FB() privileged, so just return an invalid handle
2920 * for non-masters. */
2928 drm_framebuffer_unreference(fb);
2934 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
2935 * @dev: drm device for the ioctl
2936 * @data: data pointer for the ioctl
2937 * @file_priv: drm file for the ioctl call
2939 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
2940 * rectangle list. Generic userspace which does frontbuffer rendering must call
2941 * this ioctl to flush out the changes on manual-update display outputs, e.g.
2942 * usb display-link, mipi manual update panels or edp panel self refresh modes.
2944 * Modesetting drivers which always update the frontbuffer do not need to
2945 * implement the corresponding ->dirty framebuffer callback.
2947 * Called by the user via ioctl.
2950 * Zero on success, errno on failure.
2952 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
2953 void *data, struct drm_file *file_priv)
2955 struct drm_clip_rect __user *clips_ptr;
2956 struct drm_clip_rect *clips = NULL;
2957 struct drm_mode_fb_dirty_cmd *r = data;
2958 struct drm_framebuffer *fb;
2963 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2966 fb = drm_framebuffer_lookup(dev, r->fb_id);
2970 num_clips = r->num_clips;
2971 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
2973 if (!num_clips != !clips_ptr) {
2978 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
2980 /* If userspace annotates copy, clips must come in pairs */
2981 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
2986 if (num_clips && clips_ptr) {
2987 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
2991 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
2997 ret = copy_from_user(clips, clips_ptr,
2998 num_clips * sizeof(*clips));
3005 if (fb->funcs->dirty) {
3006 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3015 drm_framebuffer_unreference(fb);
3022 * drm_fb_release - remove and free the FBs on this file
3023 * @priv: drm file for the ioctl
3025 * Destroy all the FBs associated with @filp.
3027 * Called by the user via ioctl.
3030 * Zero on success, errno on failure.
3032 void drm_fb_release(struct drm_file *priv)
3034 struct drm_device *dev = priv->minor->dev;
3035 struct drm_framebuffer *fb, *tfb;
3037 mutex_lock(&priv->fbs_lock);
3038 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3040 mutex_lock(&dev->mode_config.fb_lock);
3041 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3042 __drm_framebuffer_unregister(dev, fb);
3043 mutex_unlock(&dev->mode_config.fb_lock);
3045 list_del_init(&fb->filp_head);
3047 /* This will also drop the fpriv->fbs reference. */
3048 drm_framebuffer_remove(fb);
3050 mutex_unlock(&priv->fbs_lock);
3054 * drm_property_create - create a new property type
3056 * @flags: flags specifying the property type
3057 * @name: name of the property
3058 * @num_values: number of pre-defined values
3060 * This creates a new generic drm property which can then be attached to a drm
3061 * object with drm_object_attach_property. The returned property object must be
3062 * freed with drm_property_destroy.
3065 * A pointer to the newly created property on success, NULL on failure.
3067 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3068 const char *name, int num_values)
3070 struct drm_property *property = NULL;
3073 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3078 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
3079 if (!property->values)
3083 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3087 property->flags = flags;
3088 property->num_values = num_values;
3089 INIT_LIST_HEAD(&property->enum_blob_list);
3092 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3093 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3096 list_add_tail(&property->head, &dev->mode_config.property_list);
3099 kfree(property->values);
3103 EXPORT_SYMBOL(drm_property_create);
3106 * drm_property_create - create a new enumeration property type
3108 * @flags: flags specifying the property type
3109 * @name: name of the property
3110 * @props: enumeration lists with property values
3111 * @num_values: number of pre-defined values
3113 * This creates a new generic drm property which can then be attached to a drm
3114 * object with drm_object_attach_property. The returned property object must be
3115 * freed with drm_property_destroy.
3117 * Userspace is only allowed to set one of the predefined values for enumeration
3121 * A pointer to the newly created property on success, NULL on failure.
3123 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3125 const struct drm_prop_enum_list *props,
3128 struct drm_property *property;
3131 flags |= DRM_MODE_PROP_ENUM;
3133 property = drm_property_create(dev, flags, name, num_values);
3137 for (i = 0; i < num_values; i++) {
3138 ret = drm_property_add_enum(property, i,
3142 drm_property_destroy(dev, property);
3149 EXPORT_SYMBOL(drm_property_create_enum);
3152 * drm_property_create - create a new bitmask property type
3154 * @flags: flags specifying the property type
3155 * @name: name of the property
3156 * @props: enumeration lists with property bitflags
3157 * @num_values: number of pre-defined values
3159 * This creates a new generic drm property which can then be attached to a drm
3160 * object with drm_object_attach_property. The returned property object must be
3161 * freed with drm_property_destroy.
3163 * Compared to plain enumeration properties userspace is allowed to set any
3164 * or'ed together combination of the predefined property bitflag values
3167 * A pointer to the newly created property on success, NULL on failure.
3169 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3170 int flags, const char *name,
3171 const struct drm_prop_enum_list *props,
3174 struct drm_property *property;
3177 flags |= DRM_MODE_PROP_BITMASK;
3179 property = drm_property_create(dev, flags, name, num_values);
3183 for (i = 0; i < num_values; i++) {
3184 ret = drm_property_add_enum(property, i,
3188 drm_property_destroy(dev, property);
3195 EXPORT_SYMBOL(drm_property_create_bitmask);
3198 * drm_property_create - create a new ranged property type
3200 * @flags: flags specifying the property type
3201 * @name: name of the property
3202 * @min: minimum value of the property
3203 * @max: maximum value of the property
3205 * This creates a new generic drm property which can then be attached to a drm
3206 * object with drm_object_attach_property. The returned property object must be
3207 * freed with drm_property_destroy.
3209 * Userspace is allowed to set any interger value in the (min, max) range
3213 * A pointer to the newly created property on success, NULL on failure.
3215 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3217 uint64_t min, uint64_t max)
3219 struct drm_property *property;
3221 flags |= DRM_MODE_PROP_RANGE;
3223 property = drm_property_create(dev, flags, name, 2);
3227 property->values[0] = min;
3228 property->values[1] = max;
3232 EXPORT_SYMBOL(drm_property_create_range);
3235 * drm_property_add_enum - add a possible value to an enumeration property
3236 * @property: enumeration property to change
3237 * @index: index of the new enumeration
3238 * @value: value of the new enumeration
3239 * @name: symbolic name of the new enumeration
3241 * This functions adds enumerations to a property.
3243 * It's use is deprecated, drivers should use one of the more specific helpers
3244 * to directly create the property with all enumerations already attached.
3247 * Zero on success, error code on failure.
3249 int drm_property_add_enum(struct drm_property *property, int index,
3250 uint64_t value, const char *name)
3252 struct drm_property_enum *prop_enum;
3254 if (!(property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)))
3258 * Bitmask enum properties have the additional constraint of values
3261 if ((property->flags & DRM_MODE_PROP_BITMASK) && (value > 63))
3264 if (!list_empty(&property->enum_blob_list)) {
3265 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3266 if (prop_enum->value == value) {
3267 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3268 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3274 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3278 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3279 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3280 prop_enum->value = value;
3282 property->values[index] = value;
3283 list_add_tail(&prop_enum->head, &property->enum_blob_list);
3286 EXPORT_SYMBOL(drm_property_add_enum);
3289 * drm_property_destroy - destroy a drm property
3291 * @property: property to destry
3293 * This function frees a property including any attached resources like
3294 * enumeration values.
3296 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3298 struct drm_property_enum *prop_enum, *pt;
3300 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
3301 list_del(&prop_enum->head);
3305 if (property->num_values)
3306 kfree(property->values);
3307 drm_mode_object_put(dev, &property->base);
3308 list_del(&property->head);
3311 EXPORT_SYMBOL(drm_property_destroy);
3314 * drm_object_attach_property - attach a property to a modeset object
3315 * @obj: drm modeset object
3316 * @property: property to attach
3317 * @init_val: initial value of the property
3319 * This attaches the given property to the modeset object with the given initial
3320 * value. Currently this function cannot fail since the properties are stored in
3321 * a statically sized array.
3323 void drm_object_attach_property(struct drm_mode_object *obj,
3324 struct drm_property *property,
3327 int count = obj->properties->count;
3329 if (count == DRM_OBJECT_MAX_PROPERTY) {
3330 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3331 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3332 "you see this message on the same object type.\n",
3337 obj->properties->ids[count] = property->base.id;
3338 obj->properties->values[count] = init_val;
3339 obj->properties->count++;
3341 EXPORT_SYMBOL(drm_object_attach_property);
3344 * drm_object_property_set_value - set the value of a property
3345 * @obj: drm mode object to set property value for
3346 * @property: property to set
3347 * @val: value the property should be set to
3349 * This functions sets a given property on a given object. This function only
3350 * changes the software state of the property, it does not call into the
3351 * driver's ->set_property callback.
3354 * Zero on success, error code on failure.
3356 int drm_object_property_set_value(struct drm_mode_object *obj,
3357 struct drm_property *property, uint64_t val)
3361 for (i = 0; i < obj->properties->count; i++) {
3362 if (obj->properties->ids[i] == property->base.id) {
3363 obj->properties->values[i] = val;
3370 EXPORT_SYMBOL(drm_object_property_set_value);
3373 * drm_object_property_get_value - retrieve the value of a property
3374 * @obj: drm mode object to get property value from
3375 * @property: property to retrieve
3376 * @val: storage for the property value
3378 * This function retrieves the softare state of the given property for the given
3379 * property. Since there is no driver callback to retrieve the current property
3380 * value this might be out of sync with the hardware, depending upon the driver
3384 * Zero on success, error code on failure.
3386 int drm_object_property_get_value(struct drm_mode_object *obj,
3387 struct drm_property *property, uint64_t *val)
3391 for (i = 0; i < obj->properties->count; i++) {
3392 if (obj->properties->ids[i] == property->base.id) {
3393 *val = obj->properties->values[i];
3400 EXPORT_SYMBOL(drm_object_property_get_value);
3403 * drm_mode_getproperty_ioctl - get the current value of a connector's property
3406 * @file_priv: DRM file info
3408 * This function retrieves the current value for an connectors's property.
3410 * Called by the user via ioctl.
3413 * Zero on success, errno on failure.
3415 int drm_mode_getproperty_ioctl(struct drm_device *dev,
3416 void *data, struct drm_file *file_priv)
3418 struct drm_mode_object *obj;
3419 struct drm_mode_get_property *out_resp = data;
3420 struct drm_property *property;
3423 int value_count = 0;
3426 struct drm_property_enum *prop_enum;
3427 struct drm_mode_property_enum __user *enum_ptr;
3428 struct drm_property_blob *prop_blob;
3429 uint32_t __user *blob_id_ptr;
3430 uint64_t __user *values_ptr;
3431 uint32_t __user *blob_length_ptr;
3433 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3436 drm_modeset_lock_all(dev);
3437 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
3442 property = obj_to_property(obj);
3444 if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) {
3445 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
3447 } else if (property->flags & DRM_MODE_PROP_BLOB) {
3448 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
3452 value_count = property->num_values;
3454 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
3455 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
3456 out_resp->flags = property->flags;
3458 if ((out_resp->count_values >= value_count) && value_count) {
3459 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
3460 for (i = 0; i < value_count; i++) {
3461 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
3467 out_resp->count_values = value_count;
3469 if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) {
3470 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
3472 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3473 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3475 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
3480 if (copy_to_user(&enum_ptr[copied].name,
3481 &prop_enum->name, DRM_PROP_NAME_LEN)) {
3488 out_resp->count_enum_blobs = enum_count;
3491 if (property->flags & DRM_MODE_PROP_BLOB) {
3492 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
3494 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr;
3495 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr;
3497 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
3498 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
3503 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
3511 out_resp->count_enum_blobs = blob_count;
3514 drm_modeset_unlock_all(dev);
3518 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
3521 struct drm_property_blob *blob;
3524 if (!length || !data)
3527 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
3531 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
3537 blob->length = length;
3539 memcpy(blob->data, data, length);
3541 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
3545 static void drm_property_destroy_blob(struct drm_device *dev,
3546 struct drm_property_blob *blob)
3548 drm_mode_object_put(dev, &blob->base);
3549 list_del(&blob->head);
3554 * drm_mode_getblob_ioctl - get the contents of a blob property value
3557 * @file_priv: DRM file info
3559 * This function retrieves the contents of a blob property. The value stored in
3560 * an object's blob property is just a normal modeset object id.
3562 * Called by the user via ioctl.
3565 * Zero on success, errno on failure.
3567 int drm_mode_getblob_ioctl(struct drm_device *dev,
3568 void *data, struct drm_file *file_priv)
3570 struct drm_mode_object *obj;
3571 struct drm_mode_get_blob *out_resp = data;
3572 struct drm_property_blob *blob;
3574 void __user *blob_ptr;
3576 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3579 drm_modeset_lock_all(dev);
3580 obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
3585 blob = obj_to_blob(obj);
3587 if (out_resp->length == blob->length) {
3588 blob_ptr = (void __user *)(unsigned long)out_resp->data;
3589 if (copy_to_user(blob_ptr, blob->data, blob->length)){
3594 out_resp->length = blob->length;
3597 drm_modeset_unlock_all(dev);
3602 * drm_mode_connector_update_edid_property - update the edid property of a connector
3603 * @connector: drm connector
3604 * @edid: new value of the edid property
3606 * This function creates a new blob modeset object and assigns its id to the
3607 * connector's edid property.
3610 * Zero on success, errno on failure.
3612 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
3615 struct drm_device *dev = connector->dev;
3618 if (connector->edid_blob_ptr)
3619 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
3621 /* Delete edid, when there is none. */
3623 connector->edid_blob_ptr = NULL;
3624 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
3628 size = EDID_LENGTH * (1 + edid->extensions);
3629 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
3631 if (!connector->edid_blob_ptr)
3634 ret = drm_object_property_set_value(&connector->base,
3635 dev->mode_config.edid_property,
3636 connector->edid_blob_ptr->base.id);
3640 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
3642 static bool drm_property_change_is_valid(struct drm_property *property,
3645 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
3647 if (property->flags & DRM_MODE_PROP_RANGE) {
3648 if (value < property->values[0] || value > property->values[1])
3651 } else if (property->flags & DRM_MODE_PROP_BITMASK) {
3653 uint64_t valid_mask = 0;
3654 for (i = 0; i < property->num_values; i++)
3655 valid_mask |= (1ULL << property->values[i]);
3656 return !(value & ~valid_mask);
3657 } else if (property->flags & DRM_MODE_PROP_BLOB) {
3658 /* Only the driver knows */
3662 for (i = 0; i < property->num_values; i++)
3663 if (property->values[i] == value)
3670 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
3673 * @file_priv: DRM file info
3675 * This function sets the current value for a connectors's property. It also
3676 * calls into a driver's ->set_property callback to update the hardware state
3678 * Called by the user via ioctl.
3681 * Zero on success, errno on failure.
3683 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
3684 void *data, struct drm_file *file_priv)
3686 struct drm_mode_connector_set_property *conn_set_prop = data;
3687 struct drm_mode_obj_set_property obj_set_prop = {
3688 .value = conn_set_prop->value,
3689 .prop_id = conn_set_prop->prop_id,
3690 .obj_id = conn_set_prop->connector_id,
3691 .obj_type = DRM_MODE_OBJECT_CONNECTOR
3694 /* It does all the locking and checking we need */
3695 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
3698 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
3699 struct drm_property *property,
3703 struct drm_connector *connector = obj_to_connector(obj);
3705 /* Do DPMS ourselves */
3706 if (property == connector->dev->mode_config.dpms_property) {
3707 if (connector->funcs->dpms)
3708 (*connector->funcs->dpms)(connector, (int)value);
3710 } else if (connector->funcs->set_property)
3711 ret = connector->funcs->set_property(connector, property, value);
3713 /* store the property value if successful */
3715 drm_object_property_set_value(&connector->base, property, value);
3719 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
3720 struct drm_property *property,
3724 struct drm_crtc *crtc = obj_to_crtc(obj);
3726 if (crtc->funcs->set_property)
3727 ret = crtc->funcs->set_property(crtc, property, value);
3729 drm_object_property_set_value(obj, property, value);
3734 static int drm_mode_plane_set_obj_prop(struct drm_mode_object *obj,
3735 struct drm_property *property,
3739 struct drm_plane *plane = obj_to_plane(obj);
3741 if (plane->funcs->set_property)
3742 ret = plane->funcs->set_property(plane, property, value);
3744 drm_object_property_set_value(obj, property, value);
3750 * drm_mode_getproperty_ioctl - get the current value of a object's property
3753 * @file_priv: DRM file info
3755 * This function retrieves the current value for an object's property. Compared
3756 * to the connector specific ioctl this one is extended to also work on crtc and
3759 * Called by the user via ioctl.
3762 * Zero on success, errno on failure.
3764 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
3765 struct drm_file *file_priv)
3767 struct drm_mode_obj_get_properties *arg = data;
3768 struct drm_mode_object *obj;
3772 int props_count = 0;
3773 uint32_t __user *props_ptr;
3774 uint64_t __user *prop_values_ptr;
3776 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3779 drm_modeset_lock_all(dev);
3781 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
3786 if (!obj->properties) {
3791 props_count = obj->properties->count;
3793 /* This ioctl is called twice, once to determine how much space is
3794 * needed, and the 2nd time to fill it. */
3795 if ((arg->count_props >= props_count) && props_count) {
3797 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
3798 prop_values_ptr = (uint64_t __user *)(unsigned long)
3799 (arg->prop_values_ptr);
3800 for (i = 0; i < props_count; i++) {
3801 if (put_user(obj->properties->ids[i],
3802 props_ptr + copied)) {
3806 if (put_user(obj->properties->values[i],
3807 prop_values_ptr + copied)) {
3814 arg->count_props = props_count;
3816 drm_modeset_unlock_all(dev);
3821 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
3824 * @file_priv: DRM file info
3826 * This function sets the current value for an object's property. It also calls
3827 * into a driver's ->set_property callback to update the hardware state.
3828 * Compared to the connector specific ioctl this one is extended to also work on
3829 * crtc and plane objects.
3831 * Called by the user via ioctl.
3834 * Zero on success, errno on failure.
3836 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
3837 struct drm_file *file_priv)
3839 struct drm_mode_obj_set_property *arg = data;
3840 struct drm_mode_object *arg_obj;
3841 struct drm_mode_object *prop_obj;
3842 struct drm_property *property;
3846 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3849 drm_modeset_lock_all(dev);
3851 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
3856 if (!arg_obj->properties)
3859 for (i = 0; i < arg_obj->properties->count; i++)
3860 if (arg_obj->properties->ids[i] == arg->prop_id)
3863 if (i == arg_obj->properties->count)
3866 prop_obj = drm_mode_object_find(dev, arg->prop_id,
3867 DRM_MODE_OBJECT_PROPERTY);
3872 property = obj_to_property(prop_obj);
3874 if (!drm_property_change_is_valid(property, arg->value))
3877 switch (arg_obj->type) {
3878 case DRM_MODE_OBJECT_CONNECTOR:
3879 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
3882 case DRM_MODE_OBJECT_CRTC:
3883 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
3885 case DRM_MODE_OBJECT_PLANE:
3886 ret = drm_mode_plane_set_obj_prop(arg_obj, property, arg->value);
3891 drm_modeset_unlock_all(dev);
3896 * drm_mode_connector_attach_encoder - attach a connector to an encoder
3897 * @connector: connector to attach
3898 * @encoder: encoder to attach @connector to
3900 * This function links up a connector to an encoder. Note that the routing
3901 * restrictions between encoders and crtcs are exposed to userspace through the
3902 * possible_clones and possible_crtcs bitmasks.
3905 * Zero on success, errno on failure.
3907 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
3908 struct drm_encoder *encoder)
3912 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
3913 if (connector->encoder_ids[i] == 0) {
3914 connector->encoder_ids[i] = encoder->base.id;
3920 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
3922 void drm_mode_connector_detach_encoder(struct drm_connector *connector,
3923 struct drm_encoder *encoder)
3926 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
3927 if (connector->encoder_ids[i] == encoder->base.id) {
3928 connector->encoder_ids[i] = 0;
3929 if (connector->encoder == encoder)
3930 connector->encoder = NULL;
3935 EXPORT_SYMBOL(drm_mode_connector_detach_encoder);
3938 * drm_mode_crtc_set_gamma_size - set the gamma table size
3939 * @crtc: CRTC to set the gamma table size for
3940 * @gamma_size: size of the gamma table
3942 * Drivers which support gamma tables should set this to the supported gamma
3943 * table size when initializing the CRTC. Currently the drm core only supports a
3944 * fixed gamma table size.
3947 * Zero on success, errno on failure.
3949 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
3952 crtc->gamma_size = gamma_size;
3954 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
3955 if (!crtc->gamma_store) {
3956 crtc->gamma_size = 0;
3962 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
3965 * drm_mode_gamma_set_ioctl - set the gamma table
3968 * @file_priv: DRM file info
3970 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
3971 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
3973 * Called by the user via ioctl.
3976 * Zero on success, errno on failure.
3978 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
3979 void *data, struct drm_file *file_priv)
3981 struct drm_mode_crtc_lut *crtc_lut = data;
3982 struct drm_mode_object *obj;
3983 struct drm_crtc *crtc;
3984 void *r_base, *g_base, *b_base;
3988 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3991 drm_modeset_lock_all(dev);
3992 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
3997 crtc = obj_to_crtc(obj);
3999 if (crtc->funcs->gamma_set == NULL) {
4004 /* memcpy into gamma store */
4005 if (crtc_lut->gamma_size != crtc->gamma_size) {
4010 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4011 r_base = crtc->gamma_store;
4012 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4017 g_base = r_base + size;
4018 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4023 b_base = g_base + size;
4024 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4029 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
4032 drm_modeset_unlock_all(dev);
4038 * drm_mode_gamma_get_ioctl - get the gamma table
4041 * @file_priv: DRM file info
4043 * Copy the current gamma table into the storage provided. This also provides
4044 * the gamma table size the driver expects, which can be used to size the
4045 * allocated storage.
4047 * Called by the user via ioctl.
4050 * Zero on success, errno on failure.
4052 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4053 void *data, struct drm_file *file_priv)
4055 struct drm_mode_crtc_lut *crtc_lut = data;
4056 struct drm_mode_object *obj;
4057 struct drm_crtc *crtc;
4058 void *r_base, *g_base, *b_base;
4062 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4065 drm_modeset_lock_all(dev);
4066 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
4071 crtc = obj_to_crtc(obj);
4073 /* memcpy into gamma store */
4074 if (crtc_lut->gamma_size != crtc->gamma_size) {
4079 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4080 r_base = crtc->gamma_store;
4081 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4086 g_base = r_base + size;
4087 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4092 b_base = g_base + size;
4093 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4098 drm_modeset_unlock_all(dev);
4103 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4106 * @file_priv: DRM file info
4108 * This schedules an asynchronous update on a given CRTC, called page flip.
4109 * Optionally a drm event is generated to signal the completion of the event.
4110 * Generic drivers cannot assume that a pageflip with changed framebuffer
4111 * properties (including driver specific metadata like tiling layout) will work,
4112 * but some drivers support e.g. pixel format changes through the pageflip
4115 * Called by the user via ioctl.
4118 * Zero on success, errno on failure.
4120 int drm_mode_page_flip_ioctl(struct drm_device *dev,
4121 void *data, struct drm_file *file_priv)
4123 struct drm_mode_crtc_page_flip *page_flip = data;
4124 struct drm_mode_object *obj;
4125 struct drm_crtc *crtc;
4126 struct drm_framebuffer *fb = NULL, *old_fb = NULL;
4127 struct drm_pending_vblank_event *e = NULL;
4128 unsigned long flags;
4131 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4132 page_flip->reserved != 0)
4135 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4138 obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC);
4141 crtc = obj_to_crtc(obj);
4143 mutex_lock(&crtc->mutex);
4144 if (crtc->fb == NULL) {
4145 /* The framebuffer is currently unbound, presumably
4146 * due to a hotplug event, that userspace has not
4153 if (crtc->funcs->page_flip == NULL)
4156 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
4162 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4166 if (crtc->fb->pixel_format != fb->pixel_format) {
4167 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4172 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4174 spin_lock_irqsave(&dev->event_lock, flags);
4175 if (file_priv->event_space < sizeof e->event) {
4176 spin_unlock_irqrestore(&dev->event_lock, flags);
4179 file_priv->event_space -= sizeof e->event;
4180 spin_unlock_irqrestore(&dev->event_lock, flags);
4182 e = kzalloc(sizeof *e, GFP_KERNEL);
4184 spin_lock_irqsave(&dev->event_lock, flags);
4185 file_priv->event_space += sizeof e->event;
4186 spin_unlock_irqrestore(&dev->event_lock, flags);
4190 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
4191 e->event.base.length = sizeof e->event;
4192 e->event.user_data = page_flip->user_data;
4193 e->base.event = &e->event.base;
4194 e->base.file_priv = file_priv;
4196 (void (*) (struct drm_pending_event *)) kfree;
4200 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
4202 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4203 spin_lock_irqsave(&dev->event_lock, flags);
4204 file_priv->event_space += sizeof e->event;
4205 spin_unlock_irqrestore(&dev->event_lock, flags);
4208 /* Keep the old fb, don't unref it. */
4212 * Warn if the driver hasn't properly updated the crtc->fb
4213 * field to reflect that the new framebuffer is now used.
4214 * Failing to do so will screw with the reference counting
4217 WARN_ON(crtc->fb != fb);
4218 /* Unref only the old framebuffer. */
4224 drm_framebuffer_unreference(fb);
4226 drm_framebuffer_unreference(old_fb);
4227 mutex_unlock(&crtc->mutex);
4233 * drm_mode_config_reset - call ->reset callbacks
4236 * This functions calls all the crtc's, encoder's and connector's ->reset
4237 * callback. Drivers can use this in e.g. their driver load or resume code to
4238 * reset hardware and software state.
4240 void drm_mode_config_reset(struct drm_device *dev)
4242 struct drm_crtc *crtc;
4243 struct drm_encoder *encoder;
4244 struct drm_connector *connector;
4246 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4247 if (crtc->funcs->reset)
4248 crtc->funcs->reset(crtc);
4250 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4251 if (encoder->funcs->reset)
4252 encoder->funcs->reset(encoder);
4254 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4255 connector->status = connector_status_unknown;
4257 if (connector->funcs->reset)
4258 connector->funcs->reset(connector);
4261 EXPORT_SYMBOL(drm_mode_config_reset);
4264 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4267 * @file_priv: DRM file info
4269 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4270 * TTM or something else entirely) and returns the resulting buffer handle. This
4271 * handle can then be wrapped up into a framebuffer modeset object.
4273 * Note that userspace is not allowed to use such objects for render
4274 * acceleration - drivers must create their own private ioctls for such a use
4277 * Called by the user via ioctl.
4280 * Zero on success, errno on failure.
4282 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
4283 void *data, struct drm_file *file_priv)
4285 struct drm_mode_create_dumb *args = data;
4287 if (!dev->driver->dumb_create)
4289 return dev->driver->dumb_create(file_priv, dev, args);
4293 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4296 * @file_priv: DRM file info
4298 * Allocate an offset in the drm device node's address space to be able to
4299 * memory map a dumb buffer.
4301 * Called by the user via ioctl.
4304 * Zero on success, errno on failure.
4306 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
4307 void *data, struct drm_file *file_priv)
4309 struct drm_mode_map_dumb *args = data;
4311 /* call driver ioctl to get mmap offset */
4312 if (!dev->driver->dumb_map_offset)
4315 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
4319 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4322 * @file_priv: DRM file info
4324 * This destroys the userspace handle for the given dumb backing storage buffer.
4325 * Since buffer objects must be reference counted in the kernel a buffer object
4326 * won't be immediately freed if a framebuffer modeset object still uses it.
4328 * Called by the user via ioctl.
4331 * Zero on success, errno on failure.
4333 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
4334 void *data, struct drm_file *file_priv)
4336 struct drm_mode_destroy_dumb *args = data;
4338 if (!dev->driver->dumb_destroy)
4341 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
4345 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4346 * @format: pixel format (DRM_FORMAT_*)
4347 * @depth: storage for the depth value
4348 * @bpp: storage for the bpp value
4350 * This only supports RGB formats here for compat with code that doesn't use
4351 * pixel formats directly yet.
4353 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
4358 case DRM_FORMAT_RGB332:
4359 case DRM_FORMAT_BGR233:
4363 case DRM_FORMAT_XRGB1555:
4364 case DRM_FORMAT_XBGR1555:
4365 case DRM_FORMAT_RGBX5551:
4366 case DRM_FORMAT_BGRX5551:
4367 case DRM_FORMAT_ARGB1555:
4368 case DRM_FORMAT_ABGR1555:
4369 case DRM_FORMAT_RGBA5551:
4370 case DRM_FORMAT_BGRA5551:
4374 case DRM_FORMAT_RGB565:
4375 case DRM_FORMAT_BGR565:
4379 case DRM_FORMAT_RGB888:
4380 case DRM_FORMAT_BGR888:
4384 case DRM_FORMAT_XRGB8888:
4385 case DRM_FORMAT_XBGR8888:
4386 case DRM_FORMAT_RGBX8888:
4387 case DRM_FORMAT_BGRX8888:
4391 case DRM_FORMAT_XRGB2101010:
4392 case DRM_FORMAT_XBGR2101010:
4393 case DRM_FORMAT_RGBX1010102:
4394 case DRM_FORMAT_BGRX1010102:
4395 case DRM_FORMAT_ARGB2101010:
4396 case DRM_FORMAT_ABGR2101010:
4397 case DRM_FORMAT_RGBA1010102:
4398 case DRM_FORMAT_BGRA1010102:
4402 case DRM_FORMAT_ARGB8888:
4403 case DRM_FORMAT_ABGR8888:
4404 case DRM_FORMAT_RGBA8888:
4405 case DRM_FORMAT_BGRA8888:
4410 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4411 drm_get_format_name(format));
4417 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
4420 * drm_format_num_planes - get the number of planes for format
4421 * @format: pixel format (DRM_FORMAT_*)
4424 * The number of planes used by the specified pixel format.
4426 int drm_format_num_planes(uint32_t format)
4429 case DRM_FORMAT_YUV410:
4430 case DRM_FORMAT_YVU410:
4431 case DRM_FORMAT_YUV411:
4432 case DRM_FORMAT_YVU411:
4433 case DRM_FORMAT_YUV420:
4434 case DRM_FORMAT_YVU420:
4435 case DRM_FORMAT_YUV422:
4436 case DRM_FORMAT_YVU422:
4437 case DRM_FORMAT_YUV444:
4438 case DRM_FORMAT_YVU444:
4440 case DRM_FORMAT_NV12:
4441 case DRM_FORMAT_NV21:
4442 case DRM_FORMAT_NV16:
4443 case DRM_FORMAT_NV61:
4444 case DRM_FORMAT_NV24:
4445 case DRM_FORMAT_NV42:
4451 EXPORT_SYMBOL(drm_format_num_planes);
4454 * drm_format_plane_cpp - determine the bytes per pixel value
4455 * @format: pixel format (DRM_FORMAT_*)
4456 * @plane: plane index
4459 * The bytes per pixel value for the specified plane.
4461 int drm_format_plane_cpp(uint32_t format, int plane)
4466 if (plane >= drm_format_num_planes(format))
4470 case DRM_FORMAT_YUYV:
4471 case DRM_FORMAT_YVYU:
4472 case DRM_FORMAT_UYVY:
4473 case DRM_FORMAT_VYUY:
4475 case DRM_FORMAT_NV12:
4476 case DRM_FORMAT_NV21:
4477 case DRM_FORMAT_NV16:
4478 case DRM_FORMAT_NV61:
4479 case DRM_FORMAT_NV24:
4480 case DRM_FORMAT_NV42:
4481 return plane ? 2 : 1;
4482 case DRM_FORMAT_YUV410:
4483 case DRM_FORMAT_YVU410:
4484 case DRM_FORMAT_YUV411:
4485 case DRM_FORMAT_YVU411:
4486 case DRM_FORMAT_YUV420:
4487 case DRM_FORMAT_YVU420:
4488 case DRM_FORMAT_YUV422:
4489 case DRM_FORMAT_YVU422:
4490 case DRM_FORMAT_YUV444:
4491 case DRM_FORMAT_YVU444:
4494 drm_fb_get_bpp_depth(format, &depth, &bpp);
4498 EXPORT_SYMBOL(drm_format_plane_cpp);
4501 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
4502 * @format: pixel format (DRM_FORMAT_*)
4505 * The horizontal chroma subsampling factor for the
4506 * specified pixel format.
4508 int drm_format_horz_chroma_subsampling(uint32_t format)
4511 case DRM_FORMAT_YUV411:
4512 case DRM_FORMAT_YVU411:
4513 case DRM_FORMAT_YUV410:
4514 case DRM_FORMAT_YVU410:
4516 case DRM_FORMAT_YUYV:
4517 case DRM_FORMAT_YVYU:
4518 case DRM_FORMAT_UYVY:
4519 case DRM_FORMAT_VYUY:
4520 case DRM_FORMAT_NV12:
4521 case DRM_FORMAT_NV21:
4522 case DRM_FORMAT_NV16:
4523 case DRM_FORMAT_NV61:
4524 case DRM_FORMAT_YUV422:
4525 case DRM_FORMAT_YVU422:
4526 case DRM_FORMAT_YUV420:
4527 case DRM_FORMAT_YVU420:
4533 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
4536 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
4537 * @format: pixel format (DRM_FORMAT_*)
4540 * The vertical chroma subsampling factor for the
4541 * specified pixel format.
4543 int drm_format_vert_chroma_subsampling(uint32_t format)
4546 case DRM_FORMAT_YUV410:
4547 case DRM_FORMAT_YVU410:
4549 case DRM_FORMAT_YUV420:
4550 case DRM_FORMAT_YVU420:
4551 case DRM_FORMAT_NV12:
4552 case DRM_FORMAT_NV21:
4558 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
4561 * drm_mode_config_init - initialize DRM mode_configuration structure
4564 * Initialize @dev's mode_config structure, used for tracking the graphics
4565 * configuration of @dev.
4567 * Since this initializes the modeset locks, no locking is possible. Which is no
4568 * problem, since this should happen single threaded at init time. It is the
4569 * driver's problem to ensure this guarantee.
4572 void drm_mode_config_init(struct drm_device *dev)
4574 mutex_init(&dev->mode_config.mutex);
4575 mutex_init(&dev->mode_config.idr_mutex);
4576 mutex_init(&dev->mode_config.fb_lock);
4577 INIT_LIST_HEAD(&dev->mode_config.fb_list);
4578 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
4579 INIT_LIST_HEAD(&dev->mode_config.connector_list);
4580 INIT_LIST_HEAD(&dev->mode_config.bridge_list);
4581 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
4582 INIT_LIST_HEAD(&dev->mode_config.property_list);
4583 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
4584 INIT_LIST_HEAD(&dev->mode_config.plane_list);
4585 idr_init(&dev->mode_config.crtc_idr);
4587 drm_modeset_lock_all(dev);
4588 drm_mode_create_standard_connector_properties(dev);
4589 drm_modeset_unlock_all(dev);
4591 /* Just to be sure */
4592 dev->mode_config.num_fb = 0;
4593 dev->mode_config.num_connector = 0;
4594 dev->mode_config.num_crtc = 0;
4595 dev->mode_config.num_encoder = 0;
4597 EXPORT_SYMBOL(drm_mode_config_init);
4600 * drm_mode_config_cleanup - free up DRM mode_config info
4603 * Free up all the connectors and CRTCs associated with this DRM device, then
4604 * free up the framebuffers and associated buffer objects.
4606 * Note that since this /should/ happen single-threaded at driver/device
4607 * teardown time, no locking is required. It's the driver's job to ensure that
4608 * this guarantee actually holds true.
4610 * FIXME: cleanup any dangling user buffer objects too
4612 void drm_mode_config_cleanup(struct drm_device *dev)
4614 struct drm_connector *connector, *ot;
4615 struct drm_crtc *crtc, *ct;
4616 struct drm_encoder *encoder, *enct;
4617 struct drm_bridge *bridge, *brt;
4618 struct drm_framebuffer *fb, *fbt;
4619 struct drm_property *property, *pt;
4620 struct drm_property_blob *blob, *bt;
4621 struct drm_plane *plane, *plt;
4623 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
4625 encoder->funcs->destroy(encoder);
4628 list_for_each_entry_safe(bridge, brt,
4629 &dev->mode_config.bridge_list, head) {
4630 bridge->funcs->destroy(bridge);
4633 list_for_each_entry_safe(connector, ot,
4634 &dev->mode_config.connector_list, head) {
4635 connector->funcs->destroy(connector);
4638 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
4640 drm_property_destroy(dev, property);
4643 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
4645 drm_property_destroy_blob(dev, blob);
4649 * Single-threaded teardown context, so it's not required to grab the
4650 * fb_lock to protect against concurrent fb_list access. Contrary, it
4651 * would actually deadlock with the drm_framebuffer_cleanup function.
4653 * Also, if there are any framebuffers left, that's a driver leak now,
4654 * so politely WARN about this.
4656 WARN_ON(!list_empty(&dev->mode_config.fb_list));
4657 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
4658 drm_framebuffer_remove(fb);
4661 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
4663 plane->funcs->destroy(plane);
4666 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
4667 crtc->funcs->destroy(crtc);
4670 idr_destroy(&dev->mode_config.crtc_idr);
4672 EXPORT_SYMBOL(drm_mode_config_cleanup);