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>
40 #include <drm/drm_modeset_lock.h>
42 #include "drm_crtc_internal.h"
44 static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
45 struct drm_mode_fb_cmd2 *r,
46 struct drm_file *file_priv);
49 * drm_modeset_lock_all - take all modeset locks
52 * This function takes all modeset locks, suitable where a more fine-grained
53 * scheme isn't (yet) implemented. Locks must be dropped with
54 * drm_modeset_unlock_all.
56 void drm_modeset_lock_all(struct drm_device *dev)
58 struct drm_mode_config *config = &dev->mode_config;
59 struct drm_modeset_acquire_ctx *ctx;
62 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
66 mutex_lock(&config->mutex);
68 drm_modeset_acquire_init(ctx, 0);
71 ret = drm_modeset_lock(&config->connection_mutex, ctx);
74 ret = drm_modeset_lock_all_crtcs(dev, ctx);
78 WARN_ON(config->acquire_ctx);
80 /* now we hold the locks, so now that it is safe, stash the
81 * ctx for drm_modeset_unlock_all():
83 config->acquire_ctx = ctx;
85 drm_warn_on_modeset_not_all_locked(dev);
90 if (ret == -EDEADLK) {
91 drm_modeset_backoff(ctx);
95 EXPORT_SYMBOL(drm_modeset_lock_all);
98 * drm_modeset_unlock_all - drop all modeset locks
101 * This function drop all modeset locks taken by drm_modeset_lock_all.
103 void drm_modeset_unlock_all(struct drm_device *dev)
105 struct drm_mode_config *config = &dev->mode_config;
106 struct drm_modeset_acquire_ctx *ctx = config->acquire_ctx;
111 config->acquire_ctx = NULL;
112 drm_modeset_drop_locks(ctx);
113 drm_modeset_acquire_fini(ctx);
117 mutex_unlock(&dev->mode_config.mutex);
119 EXPORT_SYMBOL(drm_modeset_unlock_all);
122 * drm_warn_on_modeset_not_all_locked - check that all modeset locks are locked
125 * Useful as a debug assert.
127 void drm_warn_on_modeset_not_all_locked(struct drm_device *dev)
129 struct drm_crtc *crtc;
131 /* Locking is currently fubar in the panic handler. */
132 if (oops_in_progress)
135 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
136 WARN_ON(!drm_modeset_is_locked(&crtc->mutex));
138 WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
139 WARN_ON(!mutex_is_locked(&dev->mode_config.mutex));
141 EXPORT_SYMBOL(drm_warn_on_modeset_not_all_locked);
143 /* Avoid boilerplate. I'm tired of typing. */
144 #define DRM_ENUM_NAME_FN(fnname, list) \
145 const char *fnname(int val) \
148 for (i = 0; i < ARRAY_SIZE(list); i++) { \
149 if (list[i].type == val) \
150 return list[i].name; \
152 return "(unknown)"; \
158 static const struct drm_prop_enum_list drm_dpms_enum_list[] =
159 { { DRM_MODE_DPMS_ON, "On" },
160 { DRM_MODE_DPMS_STANDBY, "Standby" },
161 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
162 { DRM_MODE_DPMS_OFF, "Off" }
165 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
167 static const struct drm_prop_enum_list drm_plane_type_enum_list[] =
169 { DRM_PLANE_TYPE_OVERLAY, "Overlay" },
170 { DRM_PLANE_TYPE_PRIMARY, "Primary" },
171 { DRM_PLANE_TYPE_CURSOR, "Cursor" },
175 * Optional properties
177 static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
179 { DRM_MODE_SCALE_NONE, "None" },
180 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
181 { DRM_MODE_SCALE_CENTER, "Center" },
182 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
185 static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = {
186 { DRM_MODE_PICTURE_ASPECT_NONE, "Automatic" },
187 { DRM_MODE_PICTURE_ASPECT_4_3, "4:3" },
188 { DRM_MODE_PICTURE_ASPECT_16_9, "16:9" },
192 * Non-global properties, but "required" for certain connectors.
194 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
196 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
197 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
198 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
201 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
203 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
205 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
206 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
207 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
210 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
211 drm_dvi_i_subconnector_enum_list)
213 static const struct drm_prop_enum_list drm_tv_select_enum_list[] =
215 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
216 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
217 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
218 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
219 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
222 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
224 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
226 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
227 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
228 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
229 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
230 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
233 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
234 drm_tv_subconnector_enum_list)
236 static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
237 { DRM_MODE_DIRTY_OFF, "Off" },
238 { DRM_MODE_DIRTY_ON, "On" },
239 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
242 struct drm_conn_prop_enum_list {
249 * Connector and encoder types.
251 static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
252 { { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
253 { DRM_MODE_CONNECTOR_VGA, "VGA" },
254 { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
255 { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
256 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
257 { DRM_MODE_CONNECTOR_Composite, "Composite" },
258 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
259 { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
260 { DRM_MODE_CONNECTOR_Component, "Component" },
261 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
262 { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
263 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
264 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
265 { DRM_MODE_CONNECTOR_TV, "TV" },
266 { DRM_MODE_CONNECTOR_eDP, "eDP" },
267 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
268 { DRM_MODE_CONNECTOR_DSI, "DSI" },
271 static const struct drm_prop_enum_list drm_encoder_enum_list[] =
272 { { DRM_MODE_ENCODER_NONE, "None" },
273 { DRM_MODE_ENCODER_DAC, "DAC" },
274 { DRM_MODE_ENCODER_TMDS, "TMDS" },
275 { DRM_MODE_ENCODER_LVDS, "LVDS" },
276 { DRM_MODE_ENCODER_TVDAC, "TV" },
277 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
278 { DRM_MODE_ENCODER_DSI, "DSI" },
279 { DRM_MODE_ENCODER_DPMST, "DP MST" },
282 static const struct drm_prop_enum_list drm_subpixel_enum_list[] =
284 { SubPixelUnknown, "Unknown" },
285 { SubPixelHorizontalRGB, "Horizontal RGB" },
286 { SubPixelHorizontalBGR, "Horizontal BGR" },
287 { SubPixelVerticalRGB, "Vertical RGB" },
288 { SubPixelVerticalBGR, "Vertical BGR" },
289 { SubPixelNone, "None" },
292 void drm_connector_ida_init(void)
296 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
297 ida_init(&drm_connector_enum_list[i].ida);
300 void drm_connector_ida_destroy(void)
304 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
305 ida_destroy(&drm_connector_enum_list[i].ida);
309 * drm_get_connector_status_name - return a string for connector status
310 * @status: connector status to compute name of
312 * In contrast to the other drm_get_*_name functions this one here returns a
313 * const pointer and hence is threadsafe.
315 const char *drm_get_connector_status_name(enum drm_connector_status status)
317 if (status == connector_status_connected)
319 else if (status == connector_status_disconnected)
320 return "disconnected";
324 EXPORT_SYMBOL(drm_get_connector_status_name);
327 * drm_get_subpixel_order_name - return a string for a given subpixel enum
328 * @order: enum of subpixel_order
330 * Note you could abuse this and return something out of bounds, but that
331 * would be a caller error. No unscrubbed user data should make it here.
333 const char *drm_get_subpixel_order_name(enum subpixel_order order)
335 return drm_subpixel_enum_list[order].name;
337 EXPORT_SYMBOL(drm_get_subpixel_order_name);
339 static char printable_char(int c)
341 return isascii(c) && isprint(c) ? c : '?';
345 * drm_get_format_name - return a string for drm fourcc format
346 * @format: format to compute name of
348 * Note that the buffer used by this function is globally shared and owned by
349 * the function itself.
351 * FIXME: This isn't really multithreading safe.
353 const char *drm_get_format_name(uint32_t format)
357 snprintf(buf, sizeof(buf),
358 "%c%c%c%c %s-endian (0x%08x)",
359 printable_char(format & 0xff),
360 printable_char((format >> 8) & 0xff),
361 printable_char((format >> 16) & 0xff),
362 printable_char((format >> 24) & 0x7f),
363 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
368 EXPORT_SYMBOL(drm_get_format_name);
371 * Internal function to assign a slot in the object idr and optionally
372 * register the object into the idr.
374 static int drm_mode_object_get_reg(struct drm_device *dev,
375 struct drm_mode_object *obj,
381 mutex_lock(&dev->mode_config.idr_mutex);
382 ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
385 * Set up the object linking under the protection of the idr
386 * lock so that other users can't see inconsistent state.
389 obj->type = obj_type;
391 mutex_unlock(&dev->mode_config.idr_mutex);
393 return ret < 0 ? ret : 0;
397 * drm_mode_object_get - allocate a new modeset identifier
399 * @obj: object pointer, used to generate unique ID
400 * @obj_type: object type
402 * Create a unique identifier based on @ptr in @dev's identifier space. Used
403 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
404 * modeset identifiers are _not_ reference counted. Hence don't use this for
405 * reference counted modeset objects like framebuffers.
408 * New unique (relative to other objects in @dev) integer identifier for the
411 int drm_mode_object_get(struct drm_device *dev,
412 struct drm_mode_object *obj, uint32_t obj_type)
414 return drm_mode_object_get_reg(dev, obj, obj_type, true);
417 static void drm_mode_object_register(struct drm_device *dev,
418 struct drm_mode_object *obj)
420 mutex_lock(&dev->mode_config.idr_mutex);
421 idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
422 mutex_unlock(&dev->mode_config.idr_mutex);
426 * drm_mode_object_put - free a modeset identifer
428 * @object: object to free
430 * Free @id from @dev's unique identifier pool. Note that despite the _get
431 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
432 * for reference counted modeset objects like framebuffers.
434 void drm_mode_object_put(struct drm_device *dev,
435 struct drm_mode_object *object)
437 mutex_lock(&dev->mode_config.idr_mutex);
438 idr_remove(&dev->mode_config.crtc_idr, object->id);
439 mutex_unlock(&dev->mode_config.idr_mutex);
442 static struct drm_mode_object *_object_find(struct drm_device *dev,
443 uint32_t id, uint32_t type)
445 struct drm_mode_object *obj = NULL;
447 mutex_lock(&dev->mode_config.idr_mutex);
448 obj = idr_find(&dev->mode_config.crtc_idr, id);
449 if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
451 if (obj && obj->id != id)
453 /* don't leak out unref'd fb's */
454 if (obj && (obj->type == DRM_MODE_OBJECT_FB))
456 mutex_unlock(&dev->mode_config.idr_mutex);
462 * drm_mode_object_find - look up a drm object with static lifetime
464 * @id: id of the mode object
465 * @type: type of the mode object
467 * Note that framebuffers cannot be looked up with this functions - since those
468 * are reference counted, they need special treatment. Even with
469 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
470 * rather than WARN_ON()).
472 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
473 uint32_t id, uint32_t type)
475 struct drm_mode_object *obj = NULL;
477 /* Framebuffers are reference counted and need their own lookup
479 WARN_ON(type == DRM_MODE_OBJECT_FB);
480 obj = _object_find(dev, id, type);
483 EXPORT_SYMBOL(drm_mode_object_find);
486 * drm_framebuffer_init - initialize a framebuffer
488 * @fb: framebuffer to be initialized
489 * @funcs: ... with these functions
491 * Allocates an ID for the framebuffer's parent mode object, sets its mode
492 * functions & device file and adds it to the master fd list.
495 * This functions publishes the fb and makes it available for concurrent access
496 * by other users. Which means by this point the fb _must_ be fully set up -
497 * since all the fb attributes are invariant over its lifetime, no further
498 * locking but only correct reference counting is required.
501 * Zero on success, error code on failure.
503 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
504 const struct drm_framebuffer_funcs *funcs)
508 mutex_lock(&dev->mode_config.fb_lock);
509 kref_init(&fb->refcount);
510 INIT_LIST_HEAD(&fb->filp_head);
514 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
518 /* Grab the idr reference. */
519 drm_framebuffer_reference(fb);
521 dev->mode_config.num_fb++;
522 list_add(&fb->head, &dev->mode_config.fb_list);
524 mutex_unlock(&dev->mode_config.fb_lock);
528 EXPORT_SYMBOL(drm_framebuffer_init);
530 static void drm_framebuffer_free(struct kref *kref)
532 struct drm_framebuffer *fb =
533 container_of(kref, struct drm_framebuffer, refcount);
534 fb->funcs->destroy(fb);
537 static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
540 struct drm_mode_object *obj = NULL;
541 struct drm_framebuffer *fb;
543 mutex_lock(&dev->mode_config.idr_mutex);
544 obj = idr_find(&dev->mode_config.crtc_idr, id);
545 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
549 mutex_unlock(&dev->mode_config.idr_mutex);
555 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
557 * @id: id of the fb object
559 * If successful, this grabs an additional reference to the framebuffer -
560 * callers need to make sure to eventually unreference the returned framebuffer
561 * again, using @drm_framebuffer_unreference.
563 struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
566 struct drm_framebuffer *fb;
568 mutex_lock(&dev->mode_config.fb_lock);
569 fb = __drm_framebuffer_lookup(dev, id);
571 drm_framebuffer_reference(fb);
572 mutex_unlock(&dev->mode_config.fb_lock);
576 EXPORT_SYMBOL(drm_framebuffer_lookup);
579 * drm_framebuffer_unreference - unref a framebuffer
580 * @fb: framebuffer to unref
582 * This functions decrements the fb's refcount and frees it if it drops to zero.
584 void drm_framebuffer_unreference(struct drm_framebuffer *fb)
586 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
587 kref_put(&fb->refcount, drm_framebuffer_free);
589 EXPORT_SYMBOL(drm_framebuffer_unreference);
592 * drm_framebuffer_reference - incr the fb refcnt
595 * This functions increments the fb's refcount.
597 void drm_framebuffer_reference(struct drm_framebuffer *fb)
599 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
600 kref_get(&fb->refcount);
602 EXPORT_SYMBOL(drm_framebuffer_reference);
604 static void drm_framebuffer_free_bug(struct kref *kref)
609 static void __drm_framebuffer_unreference(struct drm_framebuffer *fb)
611 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
612 kref_put(&fb->refcount, drm_framebuffer_free_bug);
615 /* dev->mode_config.fb_lock must be held! */
616 static void __drm_framebuffer_unregister(struct drm_device *dev,
617 struct drm_framebuffer *fb)
619 mutex_lock(&dev->mode_config.idr_mutex);
620 idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
621 mutex_unlock(&dev->mode_config.idr_mutex);
625 __drm_framebuffer_unreference(fb);
629 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
630 * @fb: fb to unregister
632 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
633 * those used for fbdev. Note that the caller must hold a reference of it's own,
634 * i.e. the object may not be destroyed through this call (since it'll lead to a
635 * locking inversion).
637 void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
639 struct drm_device *dev = fb->dev;
641 mutex_lock(&dev->mode_config.fb_lock);
642 /* Mark fb as reaped and drop idr ref. */
643 __drm_framebuffer_unregister(dev, fb);
644 mutex_unlock(&dev->mode_config.fb_lock);
646 EXPORT_SYMBOL(drm_framebuffer_unregister_private);
649 * drm_framebuffer_cleanup - remove a framebuffer object
650 * @fb: framebuffer to remove
652 * Cleanup framebuffer. This function is intended to be used from the drivers
653 * ->destroy callback. It can also be used to clean up driver private
654 * framebuffers embedded into a larger structure.
656 * Note that this function does not remove the fb from active usuage - if it is
657 * still used anywhere, hilarity can ensue since userspace could call getfb on
658 * the id and get back -EINVAL. Obviously no concern at driver unload time.
660 * Also, the framebuffer will not be removed from the lookup idr - for
661 * user-created framebuffers this will happen in in the rmfb ioctl. For
662 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
663 * drm_framebuffer_unregister_private.
665 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
667 struct drm_device *dev = fb->dev;
669 mutex_lock(&dev->mode_config.fb_lock);
671 dev->mode_config.num_fb--;
672 mutex_unlock(&dev->mode_config.fb_lock);
674 EXPORT_SYMBOL(drm_framebuffer_cleanup);
677 * drm_framebuffer_remove - remove and unreference a framebuffer object
678 * @fb: framebuffer to remove
680 * Scans all the CRTCs and planes in @dev's mode_config. If they're
681 * using @fb, removes it, setting it to NULL. Then drops the reference to the
682 * passed-in framebuffer. Might take the modeset locks.
684 * Note that this function optimizes the cleanup away if the caller holds the
685 * last reference to the framebuffer. It is also guaranteed to not take the
686 * modeset locks in this case.
688 void drm_framebuffer_remove(struct drm_framebuffer *fb)
690 struct drm_device *dev = fb->dev;
691 struct drm_crtc *crtc;
692 struct drm_plane *plane;
693 struct drm_mode_set set;
696 WARN_ON(!list_empty(&fb->filp_head));
699 * drm ABI mandates that we remove any deleted framebuffers from active
700 * useage. But since most sane clients only remove framebuffers they no
701 * longer need, try to optimize this away.
703 * Since we're holding a reference ourselves, observing a refcount of 1
704 * means that we're the last holder and can skip it. Also, the refcount
705 * can never increase from 1 again, so we don't need any barriers or
708 * Note that userspace could try to race with use and instate a new
709 * usage _after_ we've cleared all current ones. End result will be an
710 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
713 if (atomic_read(&fb->refcount.refcount) > 1) {
714 drm_modeset_lock_all(dev);
715 /* remove from any CRTC */
716 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
717 if (crtc->primary->fb == fb) {
718 /* should turn off the crtc */
719 memset(&set, 0, sizeof(struct drm_mode_set));
722 ret = drm_mode_set_config_internal(&set);
724 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
728 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
730 drm_plane_force_disable(plane);
732 drm_modeset_unlock_all(dev);
735 drm_framebuffer_unreference(fb);
737 EXPORT_SYMBOL(drm_framebuffer_remove);
739 DEFINE_WW_CLASS(crtc_ww_class);
742 * drm_crtc_init_with_planes - Initialise a new CRTC object with
743 * specified primary and cursor planes.
745 * @crtc: CRTC object to init
746 * @primary: Primary plane for CRTC
747 * @cursor: Cursor plane for CRTC
748 * @funcs: callbacks for the new CRTC
750 * Inits a new object created as base part of a driver crtc object.
753 * Zero on success, error code on failure.
755 int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
756 struct drm_plane *primary,
757 struct drm_plane *cursor,
758 const struct drm_crtc_funcs *funcs)
760 struct drm_mode_config *config = &dev->mode_config;
765 crtc->invert_dimensions = false;
767 drm_modeset_lock_all(dev);
768 drm_modeset_lock_init(&crtc->mutex);
769 /* dropped by _unlock_all(): */
770 drm_modeset_lock(&crtc->mutex, config->acquire_ctx);
772 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
776 crtc->base.properties = &crtc->properties;
778 list_add_tail(&crtc->head, &config->crtc_list);
781 crtc->primary = primary;
782 crtc->cursor = cursor;
784 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
786 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
789 drm_modeset_unlock_all(dev);
793 EXPORT_SYMBOL(drm_crtc_init_with_planes);
796 * drm_crtc_cleanup - Clean up the core crtc usage
797 * @crtc: CRTC to cleanup
799 * This function cleans up @crtc and removes it from the DRM mode setting
800 * core. Note that the function does *not* free the crtc structure itself,
801 * this is the responsibility of the caller.
803 void drm_crtc_cleanup(struct drm_crtc *crtc)
805 struct drm_device *dev = crtc->dev;
807 kfree(crtc->gamma_store);
808 crtc->gamma_store = NULL;
810 drm_modeset_lock_fini(&crtc->mutex);
812 drm_mode_object_put(dev, &crtc->base);
813 list_del(&crtc->head);
814 dev->mode_config.num_crtc--;
816 EXPORT_SYMBOL(drm_crtc_cleanup);
819 * drm_crtc_index - find the index of a registered CRTC
820 * @crtc: CRTC to find index for
822 * Given a registered CRTC, return the index of that CRTC within a DRM
823 * device's list of CRTCs.
825 unsigned int drm_crtc_index(struct drm_crtc *crtc)
827 unsigned int index = 0;
828 struct drm_crtc *tmp;
830 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
839 EXPORT_SYMBOL(drm_crtc_index);
842 * drm_mode_remove - remove and free a mode
843 * @connector: connector list to modify
844 * @mode: mode to remove
846 * Remove @mode from @connector's mode list, then free it.
848 static void drm_mode_remove(struct drm_connector *connector,
849 struct drm_display_mode *mode)
851 list_del(&mode->head);
852 drm_mode_destroy(connector->dev, mode);
856 * drm_connector_init - Init a preallocated connector
858 * @connector: the connector to init
859 * @funcs: callbacks for this connector
860 * @connector_type: user visible type of the connector
862 * Initialises a preallocated connector. Connectors should be
863 * subclassed as part of driver connector objects.
866 * Zero on success, error code on failure.
868 int drm_connector_init(struct drm_device *dev,
869 struct drm_connector *connector,
870 const struct drm_connector_funcs *funcs,
874 struct ida *connector_ida =
875 &drm_connector_enum_list[connector_type].ida;
877 drm_modeset_lock_all(dev);
879 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false);
883 connector->base.properties = &connector->properties;
884 connector->dev = dev;
885 connector->funcs = funcs;
886 connector->connector_type = connector_type;
887 connector->connector_type_id =
888 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
889 if (connector->connector_type_id < 0) {
890 ret = connector->connector_type_id;
894 kasprintf(GFP_KERNEL, "%s-%d",
895 drm_connector_enum_list[connector_type].name,
896 connector->connector_type_id);
897 if (!connector->name) {
902 INIT_LIST_HEAD(&connector->probed_modes);
903 INIT_LIST_HEAD(&connector->modes);
904 connector->edid_blob_ptr = NULL;
905 connector->status = connector_status_unknown;
907 list_add_tail(&connector->head, &dev->mode_config.connector_list);
908 dev->mode_config.num_connector++;
910 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
911 drm_object_attach_property(&connector->base,
912 dev->mode_config.edid_property,
915 drm_object_attach_property(&connector->base,
916 dev->mode_config.dpms_property, 0);
918 connector->debugfs_entry = NULL;
922 drm_mode_object_put(dev, &connector->base);
925 drm_modeset_unlock_all(dev);
929 EXPORT_SYMBOL(drm_connector_init);
932 * drm_connector_cleanup - cleans up an initialised connector
933 * @connector: connector to cleanup
935 * Cleans up the connector but doesn't free the object.
937 void drm_connector_cleanup(struct drm_connector *connector)
939 struct drm_device *dev = connector->dev;
940 struct drm_display_mode *mode, *t;
942 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
943 drm_mode_remove(connector, mode);
945 list_for_each_entry_safe(mode, t, &connector->modes, head)
946 drm_mode_remove(connector, mode);
948 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
949 connector->connector_type_id);
951 drm_mode_object_put(dev, &connector->base);
952 kfree(connector->name);
953 connector->name = NULL;
954 list_del(&connector->head);
955 dev->mode_config.num_connector--;
957 EXPORT_SYMBOL(drm_connector_cleanup);
960 * drm_connector_register - register a connector
961 * @connector: the connector to register
963 * Register userspace interfaces for a connector
966 * Zero on success, error code on failure.
968 int drm_connector_register(struct drm_connector *connector)
972 drm_mode_object_register(connector->dev, &connector->base);
974 ret = drm_sysfs_connector_add(connector);
978 ret = drm_debugfs_connector_add(connector);
980 drm_sysfs_connector_remove(connector);
986 EXPORT_SYMBOL(drm_connector_register);
989 * drm_connector_unregister - unregister a connector
990 * @connector: the connector to unregister
992 * Unregister userspace interfaces for a connector
994 void drm_connector_unregister(struct drm_connector *connector)
996 drm_sysfs_connector_remove(connector);
997 drm_debugfs_connector_remove(connector);
999 EXPORT_SYMBOL(drm_connector_unregister);
1003 * drm_connector_unplug_all - unregister connector userspace interfaces
1006 * This function unregisters all connector userspace interfaces in sysfs. Should
1007 * be call when the device is disconnected, e.g. from an usb driver's
1008 * ->disconnect callback.
1010 void drm_connector_unplug_all(struct drm_device *dev)
1012 struct drm_connector *connector;
1014 /* taking the mode config mutex ends up in a clash with sysfs */
1015 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1016 drm_connector_unregister(connector);
1019 EXPORT_SYMBOL(drm_connector_unplug_all);
1022 * drm_bridge_init - initialize a drm transcoder/bridge
1024 * @bridge: transcoder/bridge to set up
1025 * @funcs: bridge function table
1027 * Initialises a preallocated bridge. Bridges should be
1028 * subclassed as part of driver connector objects.
1031 * Zero on success, error code on failure.
1033 int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
1034 const struct drm_bridge_funcs *funcs)
1038 drm_modeset_lock_all(dev);
1040 ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
1045 bridge->funcs = funcs;
1047 list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
1048 dev->mode_config.num_bridge++;
1051 drm_modeset_unlock_all(dev);
1054 EXPORT_SYMBOL(drm_bridge_init);
1057 * drm_bridge_cleanup - cleans up an initialised bridge
1058 * @bridge: bridge to cleanup
1060 * Cleans up the bridge but doesn't free the object.
1062 void drm_bridge_cleanup(struct drm_bridge *bridge)
1064 struct drm_device *dev = bridge->dev;
1066 drm_modeset_lock_all(dev);
1067 drm_mode_object_put(dev, &bridge->base);
1068 list_del(&bridge->head);
1069 dev->mode_config.num_bridge--;
1070 drm_modeset_unlock_all(dev);
1072 EXPORT_SYMBOL(drm_bridge_cleanup);
1075 * drm_encoder_init - Init a preallocated encoder
1077 * @encoder: the encoder to init
1078 * @funcs: callbacks for this encoder
1079 * @encoder_type: user visible type of the encoder
1081 * Initialises a preallocated encoder. Encoder should be
1082 * subclassed as part of driver encoder objects.
1085 * Zero on success, error code on failure.
1087 int drm_encoder_init(struct drm_device *dev,
1088 struct drm_encoder *encoder,
1089 const struct drm_encoder_funcs *funcs,
1094 drm_modeset_lock_all(dev);
1096 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1101 encoder->encoder_type = encoder_type;
1102 encoder->funcs = funcs;
1103 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1104 drm_encoder_enum_list[encoder_type].name,
1106 if (!encoder->name) {
1111 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1112 dev->mode_config.num_encoder++;
1116 drm_mode_object_put(dev, &encoder->base);
1119 drm_modeset_unlock_all(dev);
1123 EXPORT_SYMBOL(drm_encoder_init);
1126 * drm_encoder_cleanup - cleans up an initialised encoder
1127 * @encoder: encoder to cleanup
1129 * Cleans up the encoder but doesn't free the object.
1131 void drm_encoder_cleanup(struct drm_encoder *encoder)
1133 struct drm_device *dev = encoder->dev;
1134 drm_modeset_lock_all(dev);
1135 drm_mode_object_put(dev, &encoder->base);
1136 kfree(encoder->name);
1137 encoder->name = NULL;
1138 list_del(&encoder->head);
1139 dev->mode_config.num_encoder--;
1140 drm_modeset_unlock_all(dev);
1142 EXPORT_SYMBOL(drm_encoder_cleanup);
1145 * drm_universal_plane_init - Initialize a new universal plane object
1147 * @plane: plane object to init
1148 * @possible_crtcs: bitmask of possible CRTCs
1149 * @funcs: callbacks for the new plane
1150 * @formats: array of supported formats (%DRM_FORMAT_*)
1151 * @format_count: number of elements in @formats
1152 * @type: type of plane (overlay, primary, cursor)
1154 * Initializes a plane object of type @type.
1157 * Zero on success, error code on failure.
1159 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1160 unsigned long possible_crtcs,
1161 const struct drm_plane_funcs *funcs,
1162 const uint32_t *formats, uint32_t format_count,
1163 enum drm_plane_type type)
1167 drm_modeset_lock_all(dev);
1169 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1173 plane->base.properties = &plane->properties;
1175 plane->funcs = funcs;
1176 plane->format_types = kmalloc(sizeof(uint32_t) * format_count,
1178 if (!plane->format_types) {
1179 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1180 drm_mode_object_put(dev, &plane->base);
1185 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1186 plane->format_count = format_count;
1187 plane->possible_crtcs = possible_crtcs;
1190 list_add_tail(&plane->head, &dev->mode_config.plane_list);
1191 dev->mode_config.num_total_plane++;
1192 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1193 dev->mode_config.num_overlay_plane++;
1195 drm_object_attach_property(&plane->base,
1196 dev->mode_config.plane_type_property,
1200 drm_modeset_unlock_all(dev);
1204 EXPORT_SYMBOL(drm_universal_plane_init);
1207 * drm_plane_init - Initialize a legacy plane
1209 * @plane: plane object to init
1210 * @possible_crtcs: bitmask of possible CRTCs
1211 * @funcs: callbacks for the new plane
1212 * @formats: array of supported formats (%DRM_FORMAT_*)
1213 * @format_count: number of elements in @formats
1214 * @is_primary: plane type (primary vs overlay)
1216 * Legacy API to initialize a DRM plane.
1218 * New drivers should call drm_universal_plane_init() instead.
1221 * Zero on success, error code on failure.
1223 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1224 unsigned long possible_crtcs,
1225 const struct drm_plane_funcs *funcs,
1226 const uint32_t *formats, uint32_t format_count,
1229 enum drm_plane_type type;
1231 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1232 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1233 formats, format_count, type);
1235 EXPORT_SYMBOL(drm_plane_init);
1238 * drm_plane_cleanup - Clean up the core plane usage
1239 * @plane: plane to cleanup
1241 * This function cleans up @plane and removes it from the DRM mode setting
1242 * core. Note that the function does *not* free the plane structure itself,
1243 * this is the responsibility of the caller.
1245 void drm_plane_cleanup(struct drm_plane *plane)
1247 struct drm_device *dev = plane->dev;
1249 drm_modeset_lock_all(dev);
1250 kfree(plane->format_types);
1251 drm_mode_object_put(dev, &plane->base);
1253 BUG_ON(list_empty(&plane->head));
1255 list_del(&plane->head);
1256 dev->mode_config.num_total_plane--;
1257 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1258 dev->mode_config.num_overlay_plane--;
1259 drm_modeset_unlock_all(dev);
1261 EXPORT_SYMBOL(drm_plane_cleanup);
1264 * drm_plane_force_disable - Forcibly disable a plane
1265 * @plane: plane to disable
1267 * Forces the plane to be disabled.
1269 * Used when the plane's current framebuffer is destroyed,
1270 * and when restoring fbdev mode.
1272 void drm_plane_force_disable(struct drm_plane *plane)
1274 struct drm_framebuffer *old_fb = plane->fb;
1280 ret = plane->funcs->disable_plane(plane);
1282 DRM_ERROR("failed to disable plane with busy fb\n");
1285 /* disconnect the plane from the fb and crtc: */
1286 __drm_framebuffer_unreference(old_fb);
1290 EXPORT_SYMBOL(drm_plane_force_disable);
1292 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
1294 struct drm_property *edid;
1295 struct drm_property *dpms;
1296 struct drm_property *dev_path;
1299 * Standard properties (apply to all connectors)
1301 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1302 DRM_MODE_PROP_IMMUTABLE,
1304 dev->mode_config.edid_property = edid;
1306 dpms = drm_property_create_enum(dev, 0,
1307 "DPMS", drm_dpms_enum_list,
1308 ARRAY_SIZE(drm_dpms_enum_list));
1309 dev->mode_config.dpms_property = dpms;
1311 dev_path = drm_property_create(dev,
1312 DRM_MODE_PROP_BLOB |
1313 DRM_MODE_PROP_IMMUTABLE,
1315 dev->mode_config.path_property = dev_path;
1320 static int drm_mode_create_standard_plane_properties(struct drm_device *dev)
1322 struct drm_property *type;
1325 * Standard properties (apply to all planes)
1327 type = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1328 "type", drm_plane_type_enum_list,
1329 ARRAY_SIZE(drm_plane_type_enum_list));
1330 dev->mode_config.plane_type_property = type;
1336 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1339 * Called by a driver the first time a DVI-I connector is made.
1341 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1343 struct drm_property *dvi_i_selector;
1344 struct drm_property *dvi_i_subconnector;
1346 if (dev->mode_config.dvi_i_select_subconnector_property)
1350 drm_property_create_enum(dev, 0,
1351 "select subconnector",
1352 drm_dvi_i_select_enum_list,
1353 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1354 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1356 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1358 drm_dvi_i_subconnector_enum_list,
1359 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1360 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1364 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1367 * drm_create_tv_properties - create TV specific connector properties
1369 * @num_modes: number of different TV formats (modes) supported
1370 * @modes: array of pointers to strings containing name of each format
1372 * Called by a driver's TV initialization routine, this function creates
1373 * the TV specific connector properties for a given device. Caller is
1374 * responsible for allocating a list of format names and passing them to
1377 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
1380 struct drm_property *tv_selector;
1381 struct drm_property *tv_subconnector;
1384 if (dev->mode_config.tv_select_subconnector_property)
1388 * Basic connector properties
1390 tv_selector = drm_property_create_enum(dev, 0,
1391 "select subconnector",
1392 drm_tv_select_enum_list,
1393 ARRAY_SIZE(drm_tv_select_enum_list));
1394 dev->mode_config.tv_select_subconnector_property = tv_selector;
1397 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1399 drm_tv_subconnector_enum_list,
1400 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1401 dev->mode_config.tv_subconnector_property = tv_subconnector;
1404 * Other, TV specific properties: margins & TV modes.
1406 dev->mode_config.tv_left_margin_property =
1407 drm_property_create_range(dev, 0, "left margin", 0, 100);
1409 dev->mode_config.tv_right_margin_property =
1410 drm_property_create_range(dev, 0, "right margin", 0, 100);
1412 dev->mode_config.tv_top_margin_property =
1413 drm_property_create_range(dev, 0, "top margin", 0, 100);
1415 dev->mode_config.tv_bottom_margin_property =
1416 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1418 dev->mode_config.tv_mode_property =
1419 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1421 for (i = 0; i < num_modes; i++)
1422 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1425 dev->mode_config.tv_brightness_property =
1426 drm_property_create_range(dev, 0, "brightness", 0, 100);
1428 dev->mode_config.tv_contrast_property =
1429 drm_property_create_range(dev, 0, "contrast", 0, 100);
1431 dev->mode_config.tv_flicker_reduction_property =
1432 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1434 dev->mode_config.tv_overscan_property =
1435 drm_property_create_range(dev, 0, "overscan", 0, 100);
1437 dev->mode_config.tv_saturation_property =
1438 drm_property_create_range(dev, 0, "saturation", 0, 100);
1440 dev->mode_config.tv_hue_property =
1441 drm_property_create_range(dev, 0, "hue", 0, 100);
1445 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1448 * drm_mode_create_scaling_mode_property - create scaling mode property
1451 * Called by a driver the first time it's needed, must be attached to desired
1454 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1456 struct drm_property *scaling_mode;
1458 if (dev->mode_config.scaling_mode_property)
1462 drm_property_create_enum(dev, 0, "scaling mode",
1463 drm_scaling_mode_enum_list,
1464 ARRAY_SIZE(drm_scaling_mode_enum_list));
1466 dev->mode_config.scaling_mode_property = scaling_mode;
1470 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1473 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1476 * Called by a driver the first time it's needed, must be attached to desired
1480 * Zero on success, errno on failure.
1482 int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1484 if (dev->mode_config.aspect_ratio_property)
1487 dev->mode_config.aspect_ratio_property =
1488 drm_property_create_enum(dev, 0, "aspect ratio",
1489 drm_aspect_ratio_enum_list,
1490 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1492 if (dev->mode_config.aspect_ratio_property == NULL)
1497 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1500 * drm_mode_create_dirty_property - create dirty property
1503 * Called by a driver the first time it's needed, must be attached to desired
1506 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1508 struct drm_property *dirty_info;
1510 if (dev->mode_config.dirty_info_property)
1514 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1516 drm_dirty_info_enum_list,
1517 ARRAY_SIZE(drm_dirty_info_enum_list));
1518 dev->mode_config.dirty_info_property = dirty_info;
1522 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1524 static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
1526 uint32_t total_objects = 0;
1528 total_objects += dev->mode_config.num_crtc;
1529 total_objects += dev->mode_config.num_connector;
1530 total_objects += dev->mode_config.num_encoder;
1531 total_objects += dev->mode_config.num_bridge;
1533 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
1534 if (!group->id_list)
1537 group->num_crtcs = 0;
1538 group->num_connectors = 0;
1539 group->num_encoders = 0;
1540 group->num_bridges = 0;
1544 void drm_mode_group_destroy(struct drm_mode_group *group)
1546 kfree(group->id_list);
1547 group->id_list = NULL;
1551 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1552 * the drm core's responsibility to set up mode control groups.
1554 int drm_mode_group_init_legacy_group(struct drm_device *dev,
1555 struct drm_mode_group *group)
1557 struct drm_crtc *crtc;
1558 struct drm_encoder *encoder;
1559 struct drm_connector *connector;
1560 struct drm_bridge *bridge;
1563 if ((ret = drm_mode_group_init(dev, group)))
1566 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1567 group->id_list[group->num_crtcs++] = crtc->base.id;
1569 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1570 group->id_list[group->num_crtcs + group->num_encoders++] =
1573 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1574 group->id_list[group->num_crtcs + group->num_encoders +
1575 group->num_connectors++] = connector->base.id;
1577 list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
1578 group->id_list[group->num_crtcs + group->num_encoders +
1579 group->num_connectors + group->num_bridges++] =
1584 EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
1586 void drm_reinit_primary_mode_group(struct drm_device *dev)
1588 drm_modeset_lock_all(dev);
1589 drm_mode_group_destroy(&dev->primary->mode_group);
1590 drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
1591 drm_modeset_unlock_all(dev);
1593 EXPORT_SYMBOL(drm_reinit_primary_mode_group);
1596 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1597 * @out: drm_mode_modeinfo struct to return to the user
1598 * @in: drm_display_mode to use
1600 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1603 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1604 const struct drm_display_mode *in)
1606 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1607 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1608 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1609 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1610 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1611 "timing values too large for mode info\n");
1613 out->clock = in->clock;
1614 out->hdisplay = in->hdisplay;
1615 out->hsync_start = in->hsync_start;
1616 out->hsync_end = in->hsync_end;
1617 out->htotal = in->htotal;
1618 out->hskew = in->hskew;
1619 out->vdisplay = in->vdisplay;
1620 out->vsync_start = in->vsync_start;
1621 out->vsync_end = in->vsync_end;
1622 out->vtotal = in->vtotal;
1623 out->vscan = in->vscan;
1624 out->vrefresh = in->vrefresh;
1625 out->flags = in->flags;
1626 out->type = in->type;
1627 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1628 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1632 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1633 * @out: drm_display_mode to return to the user
1634 * @in: drm_mode_modeinfo to use
1636 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1640 * Zero on success, errno on failure.
1642 static int drm_crtc_convert_umode(struct drm_display_mode *out,
1643 const struct drm_mode_modeinfo *in)
1645 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1648 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1651 out->clock = in->clock;
1652 out->hdisplay = in->hdisplay;
1653 out->hsync_start = in->hsync_start;
1654 out->hsync_end = in->hsync_end;
1655 out->htotal = in->htotal;
1656 out->hskew = in->hskew;
1657 out->vdisplay = in->vdisplay;
1658 out->vsync_start = in->vsync_start;
1659 out->vsync_end = in->vsync_end;
1660 out->vtotal = in->vtotal;
1661 out->vscan = in->vscan;
1662 out->vrefresh = in->vrefresh;
1663 out->flags = in->flags;
1664 out->type = in->type;
1665 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1666 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1672 * drm_mode_getresources - get graphics configuration
1673 * @dev: drm device for the ioctl
1674 * @data: data pointer for the ioctl
1675 * @file_priv: drm file for the ioctl call
1677 * Construct a set of configuration description structures and return
1678 * them to the user, including CRTC, connector and framebuffer configuration.
1680 * Called by the user via ioctl.
1683 * Zero on success, errno on failure.
1685 int drm_mode_getresources(struct drm_device *dev, void *data,
1686 struct drm_file *file_priv)
1688 struct drm_mode_card_res *card_res = data;
1689 struct list_head *lh;
1690 struct drm_framebuffer *fb;
1691 struct drm_connector *connector;
1692 struct drm_crtc *crtc;
1693 struct drm_encoder *encoder;
1695 int connector_count = 0;
1698 int encoder_count = 0;
1700 uint32_t __user *fb_id;
1701 uint32_t __user *crtc_id;
1702 uint32_t __user *connector_id;
1703 uint32_t __user *encoder_id;
1704 struct drm_mode_group *mode_group;
1706 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1710 mutex_lock(&file_priv->fbs_lock);
1712 * For the non-control nodes we need to limit the list of resources
1713 * by IDs in the group list for this node
1715 list_for_each(lh, &file_priv->fbs)
1718 /* handle this in 4 parts */
1720 if (card_res->count_fbs >= fb_count) {
1722 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1723 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1724 if (put_user(fb->base.id, fb_id + copied)) {
1725 mutex_unlock(&file_priv->fbs_lock);
1731 card_res->count_fbs = fb_count;
1732 mutex_unlock(&file_priv->fbs_lock);
1734 drm_modeset_lock_all(dev);
1735 if (!drm_is_primary_client(file_priv)) {
1738 list_for_each(lh, &dev->mode_config.crtc_list)
1741 list_for_each(lh, &dev->mode_config.connector_list)
1744 list_for_each(lh, &dev->mode_config.encoder_list)
1748 mode_group = &file_priv->master->minor->mode_group;
1749 crtc_count = mode_group->num_crtcs;
1750 connector_count = mode_group->num_connectors;
1751 encoder_count = mode_group->num_encoders;
1754 card_res->max_height = dev->mode_config.max_height;
1755 card_res->min_height = dev->mode_config.min_height;
1756 card_res->max_width = dev->mode_config.max_width;
1757 card_res->min_width = dev->mode_config.min_width;
1760 if (card_res->count_crtcs >= crtc_count) {
1762 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1764 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1766 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1767 if (put_user(crtc->base.id, crtc_id + copied)) {
1774 for (i = 0; i < mode_group->num_crtcs; i++) {
1775 if (put_user(mode_group->id_list[i],
1776 crtc_id + copied)) {
1784 card_res->count_crtcs = crtc_count;
1787 if (card_res->count_encoders >= encoder_count) {
1789 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1791 list_for_each_entry(encoder,
1792 &dev->mode_config.encoder_list,
1794 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1796 if (put_user(encoder->base.id, encoder_id +
1804 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1805 if (put_user(mode_group->id_list[i],
1806 encoder_id + copied)) {
1815 card_res->count_encoders = encoder_count;
1818 if (card_res->count_connectors >= connector_count) {
1820 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1822 list_for_each_entry(connector,
1823 &dev->mode_config.connector_list,
1825 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1828 if (put_user(connector->base.id,
1829 connector_id + copied)) {
1836 int start = mode_group->num_crtcs +
1837 mode_group->num_encoders;
1838 for (i = start; i < start + mode_group->num_connectors; i++) {
1839 if (put_user(mode_group->id_list[i],
1840 connector_id + copied)) {
1848 card_res->count_connectors = connector_count;
1850 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1851 card_res->count_connectors, card_res->count_encoders);
1854 drm_modeset_unlock_all(dev);
1859 * drm_mode_getcrtc - get CRTC configuration
1860 * @dev: drm device for the ioctl
1861 * @data: data pointer for the ioctl
1862 * @file_priv: drm file for the ioctl call
1864 * Construct a CRTC configuration structure to return to the user.
1866 * Called by the user via ioctl.
1869 * Zero on success, errno on failure.
1871 int drm_mode_getcrtc(struct drm_device *dev,
1872 void *data, struct drm_file *file_priv)
1874 struct drm_mode_crtc *crtc_resp = data;
1875 struct drm_crtc *crtc;
1878 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1881 drm_modeset_lock_all(dev);
1883 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
1889 crtc_resp->x = crtc->x;
1890 crtc_resp->y = crtc->y;
1891 crtc_resp->gamma_size = crtc->gamma_size;
1892 if (crtc->primary->fb)
1893 crtc_resp->fb_id = crtc->primary->fb->base.id;
1895 crtc_resp->fb_id = 0;
1897 if (crtc->enabled) {
1899 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1900 crtc_resp->mode_valid = 1;
1903 crtc_resp->mode_valid = 0;
1907 drm_modeset_unlock_all(dev);
1911 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1912 const struct drm_file *file_priv)
1915 * If user-space hasn't configured the driver to expose the stereo 3D
1916 * modes, don't expose them.
1918 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1925 * drm_mode_getconnector - get connector configuration
1926 * @dev: drm device for the ioctl
1927 * @data: data pointer for the ioctl
1928 * @file_priv: drm file for the ioctl call
1930 * Construct a connector configuration structure to return to the user.
1932 * Called by the user via ioctl.
1935 * Zero on success, errno on failure.
1937 int drm_mode_getconnector(struct drm_device *dev, void *data,
1938 struct drm_file *file_priv)
1940 struct drm_mode_get_connector *out_resp = data;
1941 struct drm_connector *connector;
1942 struct drm_display_mode *mode;
1944 int props_count = 0;
1945 int encoders_count = 0;
1949 struct drm_mode_modeinfo u_mode;
1950 struct drm_mode_modeinfo __user *mode_ptr;
1951 uint32_t __user *prop_ptr;
1952 uint64_t __user *prop_values;
1953 uint32_t __user *encoder_ptr;
1955 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1958 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1960 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1962 mutex_lock(&dev->mode_config.mutex);
1964 connector = drm_connector_find(dev, out_resp->connector_id);
1970 props_count = connector->properties.count;
1972 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1973 if (connector->encoder_ids[i] != 0) {
1978 if (out_resp->count_modes == 0) {
1979 connector->funcs->fill_modes(connector,
1980 dev->mode_config.max_width,
1981 dev->mode_config.max_height);
1984 /* delayed so we get modes regardless of pre-fill_modes state */
1985 list_for_each_entry(mode, &connector->modes, head)
1986 if (drm_mode_expose_to_userspace(mode, file_priv))
1989 out_resp->connector_id = connector->base.id;
1990 out_resp->connector_type = connector->connector_type;
1991 out_resp->connector_type_id = connector->connector_type_id;
1992 out_resp->mm_width = connector->display_info.width_mm;
1993 out_resp->mm_height = connector->display_info.height_mm;
1994 out_resp->subpixel = connector->display_info.subpixel_order;
1995 out_resp->connection = connector->status;
1996 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
1997 if (connector->encoder)
1998 out_resp->encoder_id = connector->encoder->base.id;
2000 out_resp->encoder_id = 0;
2001 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2004 * This ioctl is called twice, once to determine how much space is
2005 * needed, and the 2nd time to fill it.
2007 if ((out_resp->count_modes >= mode_count) && mode_count) {
2009 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
2010 list_for_each_entry(mode, &connector->modes, head) {
2011 if (!drm_mode_expose_to_userspace(mode, file_priv))
2014 drm_crtc_convert_to_umode(&u_mode, mode);
2015 if (copy_to_user(mode_ptr + copied,
2016 &u_mode, sizeof(u_mode))) {
2023 out_resp->count_modes = mode_count;
2025 if ((out_resp->count_props >= props_count) && props_count) {
2027 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
2028 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
2029 for (i = 0; i < connector->properties.count; i++) {
2030 if (put_user(connector->properties.ids[i],
2031 prop_ptr + copied)) {
2036 if (put_user(connector->properties.values[i],
2037 prop_values + copied)) {
2044 out_resp->count_props = props_count;
2046 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2048 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
2049 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2050 if (connector->encoder_ids[i] != 0) {
2051 if (put_user(connector->encoder_ids[i],
2052 encoder_ptr + copied)) {
2060 out_resp->count_encoders = encoders_count;
2063 mutex_unlock(&dev->mode_config.mutex);
2069 * drm_mode_getencoder - get encoder configuration
2070 * @dev: drm device for the ioctl
2071 * @data: data pointer for the ioctl
2072 * @file_priv: drm file for the ioctl call
2074 * Construct a encoder configuration structure to return to the user.
2076 * Called by the user via ioctl.
2079 * Zero on success, errno on failure.
2081 int drm_mode_getencoder(struct drm_device *dev, void *data,
2082 struct drm_file *file_priv)
2084 struct drm_mode_get_encoder *enc_resp = data;
2085 struct drm_encoder *encoder;
2088 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2091 drm_modeset_lock_all(dev);
2092 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
2099 enc_resp->crtc_id = encoder->crtc->base.id;
2101 enc_resp->crtc_id = 0;
2102 enc_resp->encoder_type = encoder->encoder_type;
2103 enc_resp->encoder_id = encoder->base.id;
2104 enc_resp->possible_crtcs = encoder->possible_crtcs;
2105 enc_resp->possible_clones = encoder->possible_clones;
2108 drm_modeset_unlock_all(dev);
2113 * drm_mode_getplane_res - enumerate all plane resources
2116 * @file_priv: DRM file info
2118 * Construct a list of plane ids to return to the user.
2120 * Called by the user via ioctl.
2123 * Zero on success, errno on failure.
2125 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2126 struct drm_file *file_priv)
2128 struct drm_mode_get_plane_res *plane_resp = data;
2129 struct drm_mode_config *config;
2130 struct drm_plane *plane;
2131 uint32_t __user *plane_ptr;
2132 int copied = 0, ret = 0;
2133 unsigned num_planes;
2135 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2138 drm_modeset_lock_all(dev);
2139 config = &dev->mode_config;
2141 if (file_priv->universal_planes)
2142 num_planes = config->num_total_plane;
2144 num_planes = config->num_overlay_plane;
2147 * This ioctl is called twice, once to determine how much space is
2148 * needed, and the 2nd time to fill it.
2151 (plane_resp->count_planes >= num_planes)) {
2152 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2154 list_for_each_entry(plane, &config->plane_list, head) {
2156 * Unless userspace set the 'universal planes'
2157 * capability bit, only advertise overlays.
2159 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2160 !file_priv->universal_planes)
2163 if (put_user(plane->base.id, plane_ptr + copied)) {
2170 plane_resp->count_planes = num_planes;
2173 drm_modeset_unlock_all(dev);
2178 * drm_mode_getplane - get plane configuration
2181 * @file_priv: DRM file info
2183 * Construct a plane configuration structure to return to the user.
2185 * Called by the user via ioctl.
2188 * Zero on success, errno on failure.
2190 int drm_mode_getplane(struct drm_device *dev, void *data,
2191 struct drm_file *file_priv)
2193 struct drm_mode_get_plane *plane_resp = data;
2194 struct drm_plane *plane;
2195 uint32_t __user *format_ptr;
2198 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2201 drm_modeset_lock_all(dev);
2202 plane = drm_plane_find(dev, plane_resp->plane_id);
2209 plane_resp->crtc_id = plane->crtc->base.id;
2211 plane_resp->crtc_id = 0;
2214 plane_resp->fb_id = plane->fb->base.id;
2216 plane_resp->fb_id = 0;
2218 plane_resp->plane_id = plane->base.id;
2219 plane_resp->possible_crtcs = plane->possible_crtcs;
2220 plane_resp->gamma_size = 0;
2223 * This ioctl is called twice, once to determine how much space is
2224 * needed, and the 2nd time to fill it.
2226 if (plane->format_count &&
2227 (plane_resp->count_format_types >= plane->format_count)) {
2228 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2229 if (copy_to_user(format_ptr,
2230 plane->format_types,
2231 sizeof(uint32_t) * plane->format_count)) {
2236 plane_resp->count_format_types = plane->format_count;
2239 drm_modeset_unlock_all(dev);
2244 * setplane_internal - setplane handler for internal callers
2246 * Note that we assume an extra reference has already been taken on fb. If the
2247 * update fails, this reference will be dropped before return; if it succeeds,
2248 * the previous framebuffer (if any) will be unreferenced instead.
2250 * src_{x,y,w,h} are provided in 16.16 fixed point format
2252 static int setplane_internal(struct drm_plane *plane,
2253 struct drm_crtc *crtc,
2254 struct drm_framebuffer *fb,
2255 int32_t crtc_x, int32_t crtc_y,
2256 uint32_t crtc_w, uint32_t crtc_h,
2257 /* src_{x,y,w,h} values are 16.16 fixed point */
2258 uint32_t src_x, uint32_t src_y,
2259 uint32_t src_w, uint32_t src_h)
2261 struct drm_device *dev = plane->dev;
2262 struct drm_framebuffer *old_fb = NULL;
2264 unsigned int fb_width, fb_height;
2267 /* No fb means shut it down */
2269 drm_modeset_lock_all(dev);
2271 ret = plane->funcs->disable_plane(plane);
2278 drm_modeset_unlock_all(dev);
2282 /* Check whether this plane is usable on this CRTC */
2283 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2284 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2289 /* Check whether this plane supports the fb pixel format. */
2290 for (i = 0; i < plane->format_count; i++)
2291 if (fb->pixel_format == plane->format_types[i])
2293 if (i == plane->format_count) {
2294 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2295 drm_get_format_name(fb->pixel_format));
2300 fb_width = fb->width << 16;
2301 fb_height = fb->height << 16;
2303 /* Make sure source coordinates are inside the fb. */
2304 if (src_w > fb_width ||
2305 src_x > fb_width - src_w ||
2306 src_h > fb_height ||
2307 src_y > fb_height - src_h) {
2308 DRM_DEBUG_KMS("Invalid source coordinates "
2309 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2310 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2311 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2312 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2313 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2318 drm_modeset_lock_all(dev);
2320 ret = plane->funcs->update_plane(plane, crtc, fb,
2321 crtc_x, crtc_y, crtc_w, crtc_h,
2322 src_x, src_y, src_w, src_h);
2330 drm_modeset_unlock_all(dev);
2334 drm_framebuffer_unreference(fb);
2336 drm_framebuffer_unreference(old_fb);
2343 * drm_mode_setplane - configure a plane's configuration
2345 * @data: ioctl data*
2346 * @file_priv: DRM file info
2348 * Set plane configuration, including placement, fb, scaling, and other factors.
2349 * Or pass a NULL fb to disable (planes may be disabled without providing a
2353 * Zero on success, errno on failure.
2355 int drm_mode_setplane(struct drm_device *dev, void *data,
2356 struct drm_file *file_priv)
2358 struct drm_mode_set_plane *plane_req = data;
2359 struct drm_mode_object *obj;
2360 struct drm_plane *plane;
2361 struct drm_crtc *crtc = NULL;
2362 struct drm_framebuffer *fb = NULL;
2364 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2367 /* Give drivers some help against integer overflows */
2368 if (plane_req->crtc_w > INT_MAX ||
2369 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2370 plane_req->crtc_h > INT_MAX ||
2371 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2372 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2373 plane_req->crtc_w, plane_req->crtc_h,
2374 plane_req->crtc_x, plane_req->crtc_y);
2379 * First, find the plane, crtc, and fb objects. If not available,
2380 * we don't bother to call the driver.
2382 obj = drm_mode_object_find(dev, plane_req->plane_id,
2383 DRM_MODE_OBJECT_PLANE);
2385 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2386 plane_req->plane_id);
2389 plane = obj_to_plane(obj);
2391 if (plane_req->fb_id) {
2392 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2394 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2399 obj = drm_mode_object_find(dev, plane_req->crtc_id,
2400 DRM_MODE_OBJECT_CRTC);
2402 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2403 plane_req->crtc_id);
2406 crtc = obj_to_crtc(obj);
2410 * setplane_internal will take care of deref'ing either the old or new
2411 * framebuffer depending on success.
2413 return setplane_internal(plane, crtc, fb,
2414 plane_req->crtc_x, plane_req->crtc_y,
2415 plane_req->crtc_w, plane_req->crtc_h,
2416 plane_req->src_x, plane_req->src_y,
2417 plane_req->src_w, plane_req->src_h);
2421 * drm_mode_set_config_internal - helper to call ->set_config
2422 * @set: modeset config to set
2424 * This is a little helper to wrap internal calls to the ->set_config driver
2425 * interface. The only thing it adds is correct refcounting dance.
2428 * Zero on success, errno on failure.
2430 int drm_mode_set_config_internal(struct drm_mode_set *set)
2432 struct drm_crtc *crtc = set->crtc;
2433 struct drm_framebuffer *fb;
2434 struct drm_crtc *tmp;
2438 * NOTE: ->set_config can also disable other crtcs (if we steal all
2439 * connectors from it), hence we need to refcount the fbs across all
2440 * crtcs. Atomic modeset will have saner semantics ...
2442 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
2443 tmp->old_fb = tmp->primary->fb;
2447 ret = crtc->funcs->set_config(set);
2449 crtc->primary->crtc = crtc;
2450 crtc->primary->fb = fb;
2453 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
2454 if (tmp->primary->fb)
2455 drm_framebuffer_reference(tmp->primary->fb);
2457 drm_framebuffer_unreference(tmp->old_fb);
2462 EXPORT_SYMBOL(drm_mode_set_config_internal);
2465 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2467 * @crtc: CRTC that framebuffer will be displayed on
2470 * @mode: mode that framebuffer will be displayed under
2471 * @fb: framebuffer to check size of
2473 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2475 const struct drm_display_mode *mode,
2476 const struct drm_framebuffer *fb)
2479 int hdisplay, vdisplay;
2481 hdisplay = mode->hdisplay;
2482 vdisplay = mode->vdisplay;
2484 if (drm_mode_is_stereo(mode)) {
2485 struct drm_display_mode adjusted = *mode;
2487 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE);
2488 hdisplay = adjusted.crtc_hdisplay;
2489 vdisplay = adjusted.crtc_vdisplay;
2492 if (crtc->invert_dimensions)
2493 swap(hdisplay, vdisplay);
2495 if (hdisplay > fb->width ||
2496 vdisplay > fb->height ||
2497 x > fb->width - hdisplay ||
2498 y > fb->height - vdisplay) {
2499 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2500 fb->width, fb->height, hdisplay, vdisplay, x, y,
2501 crtc->invert_dimensions ? " (inverted)" : "");
2507 EXPORT_SYMBOL(drm_crtc_check_viewport);
2510 * drm_mode_setcrtc - set CRTC configuration
2511 * @dev: drm device for the ioctl
2512 * @data: data pointer for the ioctl
2513 * @file_priv: drm file for the ioctl call
2515 * Build a new CRTC configuration based on user request.
2517 * Called by the user via ioctl.
2520 * Zero on success, errno on failure.
2522 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2523 struct drm_file *file_priv)
2525 struct drm_mode_config *config = &dev->mode_config;
2526 struct drm_mode_crtc *crtc_req = data;
2527 struct drm_crtc *crtc;
2528 struct drm_connector **connector_set = NULL, *connector;
2529 struct drm_framebuffer *fb = NULL;
2530 struct drm_display_mode *mode = NULL;
2531 struct drm_mode_set set;
2532 uint32_t __user *set_connectors_ptr;
2536 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2539 /* For some reason crtc x/y offsets are signed internally. */
2540 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2543 drm_modeset_lock_all(dev);
2544 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2546 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2550 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2552 if (crtc_req->mode_valid) {
2553 /* If we have a mode we need a framebuffer. */
2554 /* If we pass -1, set the mode with the currently bound fb */
2555 if (crtc_req->fb_id == -1) {
2556 if (!crtc->primary->fb) {
2557 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2561 fb = crtc->primary->fb;
2562 /* Make refcounting symmetric with the lookup path. */
2563 drm_framebuffer_reference(fb);
2565 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2567 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2574 mode = drm_mode_create(dev);
2580 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2582 DRM_DEBUG_KMS("Invalid mode\n");
2586 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2588 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2595 if (crtc_req->count_connectors == 0 && mode) {
2596 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2601 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2602 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2603 crtc_req->count_connectors);
2608 if (crtc_req->count_connectors > 0) {
2611 /* Avoid unbounded kernel memory allocation */
2612 if (crtc_req->count_connectors > config->num_connector) {
2617 connector_set = kmalloc(crtc_req->count_connectors *
2618 sizeof(struct drm_connector *),
2620 if (!connector_set) {
2625 for (i = 0; i < crtc_req->count_connectors; i++) {
2626 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2627 if (get_user(out_id, &set_connectors_ptr[i])) {
2632 connector = drm_connector_find(dev, out_id);
2634 DRM_DEBUG_KMS("Connector id %d unknown\n",
2639 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2643 connector_set[i] = connector;
2648 set.x = crtc_req->x;
2649 set.y = crtc_req->y;
2651 set.connectors = connector_set;
2652 set.num_connectors = crtc_req->count_connectors;
2654 ret = drm_mode_set_config_internal(&set);
2658 drm_framebuffer_unreference(fb);
2660 kfree(connector_set);
2661 drm_mode_destroy(dev, mode);
2662 drm_modeset_unlock_all(dev);
2667 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2668 * universal plane handler call
2669 * @crtc: crtc to update cursor for
2670 * @req: data pointer for the ioctl
2671 * @file_priv: drm file for the ioctl call
2673 * Legacy cursor ioctl's work directly with driver buffer handles. To
2674 * translate legacy ioctl calls into universal plane handler calls, we need to
2675 * wrap the native buffer handle in a drm_framebuffer.
2677 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2678 * buffer with a pitch of 4*width; the universal plane interface should be used
2679 * directly in cases where the hardware can support other buffer settings and
2680 * userspace wants to make use of these capabilities.
2683 * Zero on success, errno on failure.
2685 static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2686 struct drm_mode_cursor2 *req,
2687 struct drm_file *file_priv)
2689 struct drm_device *dev = crtc->dev;
2690 struct drm_framebuffer *fb = NULL;
2691 struct drm_mode_fb_cmd2 fbreq = {
2692 .width = req->width,
2693 .height = req->height,
2694 .pixel_format = DRM_FORMAT_ARGB8888,
2695 .pitches = { req->width * 4 },
2696 .handles = { req->handle },
2698 int32_t crtc_x, crtc_y;
2699 uint32_t crtc_w = 0, crtc_h = 0;
2700 uint32_t src_w = 0, src_h = 0;
2703 BUG_ON(!crtc->cursor);
2706 * Obtain fb we'll be using (either new or existing) and take an extra
2707 * reference to it if fb != null. setplane will take care of dropping
2708 * the reference if the plane update fails.
2710 if (req->flags & DRM_MODE_CURSOR_BO) {
2712 fb = add_framebuffer_internal(dev, &fbreq, file_priv);
2714 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2718 drm_framebuffer_reference(fb);
2723 mutex_lock(&dev->mode_config.mutex);
2724 fb = crtc->cursor->fb;
2726 drm_framebuffer_reference(fb);
2727 mutex_unlock(&dev->mode_config.mutex);
2730 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2734 crtc_x = crtc->cursor_x;
2735 crtc_y = crtc->cursor_y;
2740 crtc_h = fb->height;
2741 src_w = fb->width << 16;
2742 src_h = fb->height << 16;
2746 * setplane_internal will take care of deref'ing either the old or new
2747 * framebuffer depending on success.
2749 ret = setplane_internal(crtc->cursor, crtc, fb,
2750 crtc_x, crtc_y, crtc_w, crtc_h,
2751 0, 0, src_w, src_h);
2753 /* Update successful; save new cursor position, if necessary */
2754 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2755 crtc->cursor_x = req->x;
2756 crtc->cursor_y = req->y;
2762 static int drm_mode_cursor_common(struct drm_device *dev,
2763 struct drm_mode_cursor2 *req,
2764 struct drm_file *file_priv)
2766 struct drm_crtc *crtc;
2769 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2772 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2775 crtc = drm_crtc_find(dev, req->crtc_id);
2777 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2782 * If this crtc has a universal cursor plane, call that plane's update
2783 * handler rather than using legacy cursor handlers.
2786 return drm_mode_cursor_universal(crtc, req, file_priv);
2788 drm_modeset_lock(&crtc->mutex, NULL);
2789 if (req->flags & DRM_MODE_CURSOR_BO) {
2790 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
2794 /* Turns off the cursor if handle is 0 */
2795 if (crtc->funcs->cursor_set2)
2796 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2797 req->width, req->height, req->hot_x, req->hot_y);
2799 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2800 req->width, req->height);
2803 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2804 if (crtc->funcs->cursor_move) {
2805 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2812 drm_modeset_unlock(&crtc->mutex);
2820 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2821 * @dev: drm device for the ioctl
2822 * @data: data pointer for the ioctl
2823 * @file_priv: drm file for the ioctl call
2825 * Set the cursor configuration based on user request.
2827 * Called by the user via ioctl.
2830 * Zero on success, errno on failure.
2832 int drm_mode_cursor_ioctl(struct drm_device *dev,
2833 void *data, struct drm_file *file_priv)
2835 struct drm_mode_cursor *req = data;
2836 struct drm_mode_cursor2 new_req;
2838 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2839 new_req.hot_x = new_req.hot_y = 0;
2841 return drm_mode_cursor_common(dev, &new_req, file_priv);
2845 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2846 * @dev: drm device for the ioctl
2847 * @data: data pointer for the ioctl
2848 * @file_priv: drm file for the ioctl call
2850 * Set the cursor configuration based on user request. This implements the 2nd
2851 * version of the cursor ioctl, which allows userspace to additionally specify
2852 * the hotspot of the pointer.
2854 * Called by the user via ioctl.
2857 * Zero on success, errno on failure.
2859 int drm_mode_cursor2_ioctl(struct drm_device *dev,
2860 void *data, struct drm_file *file_priv)
2862 struct drm_mode_cursor2 *req = data;
2863 return drm_mode_cursor_common(dev, req, file_priv);
2867 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2868 * @bpp: bits per pixels
2869 * @depth: bit depth per pixel
2871 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2872 * Useful in fbdev emulation code, since that deals in those values.
2874 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2880 fmt = DRM_FORMAT_C8;
2884 fmt = DRM_FORMAT_XRGB1555;
2886 fmt = DRM_FORMAT_RGB565;
2889 fmt = DRM_FORMAT_RGB888;
2893 fmt = DRM_FORMAT_XRGB8888;
2894 else if (depth == 30)
2895 fmt = DRM_FORMAT_XRGB2101010;
2897 fmt = DRM_FORMAT_ARGB8888;
2900 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2901 fmt = DRM_FORMAT_XRGB8888;
2907 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
2910 * drm_mode_addfb - add an FB to the graphics configuration
2911 * @dev: drm device for the ioctl
2912 * @data: data pointer for the ioctl
2913 * @file_priv: drm file for the ioctl call
2915 * Add a new FB to the specified CRTC, given a user request. This is the
2916 * original addfb ioclt which only supported RGB formats.
2918 * Called by the user via ioctl.
2921 * Zero on success, errno on failure.
2923 int drm_mode_addfb(struct drm_device *dev,
2924 void *data, struct drm_file *file_priv)
2926 struct drm_mode_fb_cmd *or = data;
2927 struct drm_mode_fb_cmd2 r = {};
2928 struct drm_mode_config *config = &dev->mode_config;
2929 struct drm_framebuffer *fb;
2932 /* Use new struct with format internally */
2933 r.fb_id = or->fb_id;
2934 r.width = or->width;
2935 r.height = or->height;
2936 r.pitches[0] = or->pitch;
2937 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
2938 r.handles[0] = or->handle;
2940 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2943 if ((config->min_width > r.width) || (r.width > config->max_width))
2946 if ((config->min_height > r.height) || (r.height > config->max_height))
2949 fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r);
2951 DRM_DEBUG_KMS("could not create framebuffer\n");
2955 mutex_lock(&file_priv->fbs_lock);
2956 or->fb_id = fb->base.id;
2957 list_add(&fb->filp_head, &file_priv->fbs);
2958 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2959 mutex_unlock(&file_priv->fbs_lock);
2964 static int format_check(const struct drm_mode_fb_cmd2 *r)
2966 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
2970 case DRM_FORMAT_RGB332:
2971 case DRM_FORMAT_BGR233:
2972 case DRM_FORMAT_XRGB4444:
2973 case DRM_FORMAT_XBGR4444:
2974 case DRM_FORMAT_RGBX4444:
2975 case DRM_FORMAT_BGRX4444:
2976 case DRM_FORMAT_ARGB4444:
2977 case DRM_FORMAT_ABGR4444:
2978 case DRM_FORMAT_RGBA4444:
2979 case DRM_FORMAT_BGRA4444:
2980 case DRM_FORMAT_XRGB1555:
2981 case DRM_FORMAT_XBGR1555:
2982 case DRM_FORMAT_RGBX5551:
2983 case DRM_FORMAT_BGRX5551:
2984 case DRM_FORMAT_ARGB1555:
2985 case DRM_FORMAT_ABGR1555:
2986 case DRM_FORMAT_RGBA5551:
2987 case DRM_FORMAT_BGRA5551:
2988 case DRM_FORMAT_RGB565:
2989 case DRM_FORMAT_BGR565:
2990 case DRM_FORMAT_RGB888:
2991 case DRM_FORMAT_BGR888:
2992 case DRM_FORMAT_XRGB8888:
2993 case DRM_FORMAT_XBGR8888:
2994 case DRM_FORMAT_RGBX8888:
2995 case DRM_FORMAT_BGRX8888:
2996 case DRM_FORMAT_ARGB8888:
2997 case DRM_FORMAT_ABGR8888:
2998 case DRM_FORMAT_RGBA8888:
2999 case DRM_FORMAT_BGRA8888:
3000 case DRM_FORMAT_XRGB2101010:
3001 case DRM_FORMAT_XBGR2101010:
3002 case DRM_FORMAT_RGBX1010102:
3003 case DRM_FORMAT_BGRX1010102:
3004 case DRM_FORMAT_ARGB2101010:
3005 case DRM_FORMAT_ABGR2101010:
3006 case DRM_FORMAT_RGBA1010102:
3007 case DRM_FORMAT_BGRA1010102:
3008 case DRM_FORMAT_YUYV:
3009 case DRM_FORMAT_YVYU:
3010 case DRM_FORMAT_UYVY:
3011 case DRM_FORMAT_VYUY:
3012 case DRM_FORMAT_AYUV:
3013 case DRM_FORMAT_NV12:
3014 case DRM_FORMAT_NV21:
3015 case DRM_FORMAT_NV16:
3016 case DRM_FORMAT_NV61:
3017 case DRM_FORMAT_NV24:
3018 case DRM_FORMAT_NV42:
3019 case DRM_FORMAT_YUV410:
3020 case DRM_FORMAT_YVU410:
3021 case DRM_FORMAT_YUV411:
3022 case DRM_FORMAT_YVU411:
3023 case DRM_FORMAT_YUV420:
3024 case DRM_FORMAT_YVU420:
3025 case DRM_FORMAT_YUV422:
3026 case DRM_FORMAT_YVU422:
3027 case DRM_FORMAT_YUV444:
3028 case DRM_FORMAT_YVU444:
3031 DRM_DEBUG_KMS("invalid pixel format %s\n",
3032 drm_get_format_name(r->pixel_format));
3037 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
3039 int ret, hsub, vsub, num_planes, i;
3041 ret = format_check(r);
3043 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3044 drm_get_format_name(r->pixel_format));
3048 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3049 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3050 num_planes = drm_format_num_planes(r->pixel_format);
3052 if (r->width == 0 || r->width % hsub) {
3053 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->height);
3057 if (r->height == 0 || r->height % vsub) {
3058 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
3062 for (i = 0; i < num_planes; i++) {
3063 unsigned int width = r->width / (i != 0 ? hsub : 1);
3064 unsigned int height = r->height / (i != 0 ? vsub : 1);
3065 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
3067 if (!r->handles[i]) {
3068 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
3072 if ((uint64_t) width * cpp > UINT_MAX)
3075 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3078 if (r->pitches[i] < width * cpp) {
3079 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
3087 static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
3088 struct drm_mode_fb_cmd2 *r,
3089 struct drm_file *file_priv)
3091 struct drm_mode_config *config = &dev->mode_config;
3092 struct drm_framebuffer *fb;
3095 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
3096 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
3097 return ERR_PTR(-EINVAL);
3100 if ((config->min_width > r->width) || (r->width > config->max_width)) {
3101 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3102 r->width, config->min_width, config->max_width);
3103 return ERR_PTR(-EINVAL);
3105 if ((config->min_height > r->height) || (r->height > config->max_height)) {
3106 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3107 r->height, config->min_height, config->max_height);
3108 return ERR_PTR(-EINVAL);
3111 ret = framebuffer_check(r);
3113 return ERR_PTR(ret);
3115 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
3117 DRM_DEBUG_KMS("could not create framebuffer\n");
3121 mutex_lock(&file_priv->fbs_lock);
3122 r->fb_id = fb->base.id;
3123 list_add(&fb->filp_head, &file_priv->fbs);
3124 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3125 mutex_unlock(&file_priv->fbs_lock);
3131 * drm_mode_addfb2 - add an FB to the graphics configuration
3132 * @dev: drm device for the ioctl
3133 * @data: data pointer for the ioctl
3134 * @file_priv: drm file for the ioctl call
3136 * Add a new FB to the specified CRTC, given a user request with format. This is
3137 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3138 * and uses fourcc codes as pixel format specifiers.
3140 * Called by the user via ioctl.
3143 * Zero on success, errno on failure.
3145 int drm_mode_addfb2(struct drm_device *dev,
3146 void *data, struct drm_file *file_priv)
3148 struct drm_framebuffer *fb;
3150 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3153 fb = add_framebuffer_internal(dev, data, file_priv);
3161 * drm_mode_rmfb - remove an FB from the configuration
3162 * @dev: drm device for the ioctl
3163 * @data: data pointer for the ioctl
3164 * @file_priv: drm file for the ioctl call
3166 * Remove the FB specified by the user.
3168 * Called by the user via ioctl.
3171 * Zero on success, errno on failure.
3173 int drm_mode_rmfb(struct drm_device *dev,
3174 void *data, struct drm_file *file_priv)
3176 struct drm_framebuffer *fb = NULL;
3177 struct drm_framebuffer *fbl = NULL;
3178 uint32_t *id = data;
3181 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3184 mutex_lock(&file_priv->fbs_lock);
3185 mutex_lock(&dev->mode_config.fb_lock);
3186 fb = __drm_framebuffer_lookup(dev, *id);
3190 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3196 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3197 __drm_framebuffer_unregister(dev, fb);
3199 list_del_init(&fb->filp_head);
3200 mutex_unlock(&dev->mode_config.fb_lock);
3201 mutex_unlock(&file_priv->fbs_lock);
3203 drm_framebuffer_remove(fb);
3208 mutex_unlock(&dev->mode_config.fb_lock);
3209 mutex_unlock(&file_priv->fbs_lock);
3215 * drm_mode_getfb - get FB info
3216 * @dev: drm device for the ioctl
3217 * @data: data pointer for the ioctl
3218 * @file_priv: drm file for the ioctl call
3220 * Lookup the FB given its ID and return info about it.
3222 * Called by the user via ioctl.
3225 * Zero on success, errno on failure.
3227 int drm_mode_getfb(struct drm_device *dev,
3228 void *data, struct drm_file *file_priv)
3230 struct drm_mode_fb_cmd *r = data;
3231 struct drm_framebuffer *fb;
3234 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3237 fb = drm_framebuffer_lookup(dev, r->fb_id);
3241 r->height = fb->height;
3242 r->width = fb->width;
3243 r->depth = fb->depth;
3244 r->bpp = fb->bits_per_pixel;
3245 r->pitch = fb->pitches[0];
3246 if (fb->funcs->create_handle) {
3247 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
3248 drm_is_control_client(file_priv)) {
3249 ret = fb->funcs->create_handle(fb, file_priv,
3252 /* GET_FB() is an unprivileged ioctl so we must not
3253 * return a buffer-handle to non-master processes! For
3254 * backwards-compatibility reasons, we cannot make
3255 * GET_FB() privileged, so just return an invalid handle
3256 * for non-masters. */
3264 drm_framebuffer_unreference(fb);
3270 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3271 * @dev: drm device for the ioctl
3272 * @data: data pointer for the ioctl
3273 * @file_priv: drm file for the ioctl call
3275 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3276 * rectangle list. Generic userspace which does frontbuffer rendering must call
3277 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3278 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3280 * Modesetting drivers which always update the frontbuffer do not need to
3281 * implement the corresponding ->dirty framebuffer callback.
3283 * Called by the user via ioctl.
3286 * Zero on success, errno on failure.
3288 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3289 void *data, struct drm_file *file_priv)
3291 struct drm_clip_rect __user *clips_ptr;
3292 struct drm_clip_rect *clips = NULL;
3293 struct drm_mode_fb_dirty_cmd *r = data;
3294 struct drm_framebuffer *fb;
3299 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3302 fb = drm_framebuffer_lookup(dev, r->fb_id);
3306 num_clips = r->num_clips;
3307 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3309 if (!num_clips != !clips_ptr) {
3314 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3316 /* If userspace annotates copy, clips must come in pairs */
3317 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3322 if (num_clips && clips_ptr) {
3323 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3327 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
3333 ret = copy_from_user(clips, clips_ptr,
3334 num_clips * sizeof(*clips));
3341 if (fb->funcs->dirty) {
3342 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3351 drm_framebuffer_unreference(fb);
3358 * drm_fb_release - remove and free the FBs on this file
3359 * @priv: drm file for the ioctl
3361 * Destroy all the FBs associated with @filp.
3363 * Called by the user via ioctl.
3366 * Zero on success, errno on failure.
3368 void drm_fb_release(struct drm_file *priv)
3370 struct drm_device *dev = priv->minor->dev;
3371 struct drm_framebuffer *fb, *tfb;
3373 mutex_lock(&priv->fbs_lock);
3374 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3376 mutex_lock(&dev->mode_config.fb_lock);
3377 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3378 __drm_framebuffer_unregister(dev, fb);
3379 mutex_unlock(&dev->mode_config.fb_lock);
3381 list_del_init(&fb->filp_head);
3383 /* This will also drop the fpriv->fbs reference. */
3384 drm_framebuffer_remove(fb);
3386 mutex_unlock(&priv->fbs_lock);
3390 * drm_property_create - create a new property type
3392 * @flags: flags specifying the property type
3393 * @name: name of the property
3394 * @num_values: number of pre-defined values
3396 * This creates a new generic drm property which can then be attached to a drm
3397 * object with drm_object_attach_property. The returned property object must be
3398 * freed with drm_property_destroy.
3401 * A pointer to the newly created property on success, NULL on failure.
3403 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3404 const char *name, int num_values)
3406 struct drm_property *property = NULL;
3409 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3413 property->dev = dev;
3416 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
3417 if (!property->values)
3421 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3425 property->flags = flags;
3426 property->num_values = num_values;
3427 INIT_LIST_HEAD(&property->enum_blob_list);
3430 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3431 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3434 list_add_tail(&property->head, &dev->mode_config.property_list);
3436 WARN_ON(!drm_property_type_valid(property));
3440 kfree(property->values);
3444 EXPORT_SYMBOL(drm_property_create);
3447 * drm_property_create_enum - create a new enumeration property type
3449 * @flags: flags specifying the property type
3450 * @name: name of the property
3451 * @props: enumeration lists with property values
3452 * @num_values: number of pre-defined values
3454 * This creates a new generic drm property which can then be attached to a drm
3455 * object with drm_object_attach_property. The returned property object must be
3456 * freed with drm_property_destroy.
3458 * Userspace is only allowed to set one of the predefined values for enumeration
3462 * A pointer to the newly created property on success, NULL on failure.
3464 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3466 const struct drm_prop_enum_list *props,
3469 struct drm_property *property;
3472 flags |= DRM_MODE_PROP_ENUM;
3474 property = drm_property_create(dev, flags, name, num_values);
3478 for (i = 0; i < num_values; i++) {
3479 ret = drm_property_add_enum(property, i,
3483 drm_property_destroy(dev, property);
3490 EXPORT_SYMBOL(drm_property_create_enum);
3493 * drm_property_create_bitmask - create a new bitmask property type
3495 * @flags: flags specifying the property type
3496 * @name: name of the property
3497 * @props: enumeration lists with property bitflags
3498 * @num_values: number of pre-defined values
3500 * This creates a new generic drm property which can then be attached to a drm
3501 * object with drm_object_attach_property. The returned property object must be
3502 * freed with drm_property_destroy.
3504 * Compared to plain enumeration properties userspace is allowed to set any
3505 * or'ed together combination of the predefined property bitflag values
3508 * A pointer to the newly created property on success, NULL on failure.
3510 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3511 int flags, const char *name,
3512 const struct drm_prop_enum_list *props,
3514 uint64_t supported_bits)
3516 struct drm_property *property;
3517 int i, ret, index = 0;
3518 int num_values = hweight64(supported_bits);
3520 flags |= DRM_MODE_PROP_BITMASK;
3522 property = drm_property_create(dev, flags, name, num_values);
3525 for (i = 0; i < num_props; i++) {
3526 if (!(supported_bits & (1ULL << props[i].type)))
3529 if (WARN_ON(index >= num_values)) {
3530 drm_property_destroy(dev, property);
3534 ret = drm_property_add_enum(property, index++,
3538 drm_property_destroy(dev, property);
3545 EXPORT_SYMBOL(drm_property_create_bitmask);
3547 static struct drm_property *property_create_range(struct drm_device *dev,
3548 int flags, const char *name,
3549 uint64_t min, uint64_t max)
3551 struct drm_property *property;
3553 property = drm_property_create(dev, flags, name, 2);
3557 property->values[0] = min;
3558 property->values[1] = max;
3564 * drm_property_create_range - create a new ranged property type
3566 * @flags: flags specifying the property type
3567 * @name: name of the property
3568 * @min: minimum value of the property
3569 * @max: maximum value of the property
3571 * This creates a new generic drm property which can then be attached to a drm
3572 * object with drm_object_attach_property. The returned property object must be
3573 * freed with drm_property_destroy.
3575 * Userspace is allowed to set any interger value in the (min, max) range
3579 * A pointer to the newly created property on success, NULL on failure.
3581 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3583 uint64_t min, uint64_t max)
3585 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3588 EXPORT_SYMBOL(drm_property_create_range);
3590 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3591 int flags, const char *name,
3592 int64_t min, int64_t max)
3594 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3595 name, I642U64(min), I642U64(max));
3597 EXPORT_SYMBOL(drm_property_create_signed_range);
3599 struct drm_property *drm_property_create_object(struct drm_device *dev,
3600 int flags, const char *name, uint32_t type)
3602 struct drm_property *property;
3604 flags |= DRM_MODE_PROP_OBJECT;
3606 property = drm_property_create(dev, flags, name, 1);
3610 property->values[0] = type;
3614 EXPORT_SYMBOL(drm_property_create_object);
3617 * drm_property_add_enum - add a possible value to an enumeration property
3618 * @property: enumeration property to change
3619 * @index: index of the new enumeration
3620 * @value: value of the new enumeration
3621 * @name: symbolic name of the new enumeration
3623 * This functions adds enumerations to a property.
3625 * It's use is deprecated, drivers should use one of the more specific helpers
3626 * to directly create the property with all enumerations already attached.
3629 * Zero on success, error code on failure.
3631 int drm_property_add_enum(struct drm_property *property, int index,
3632 uint64_t value, const char *name)
3634 struct drm_property_enum *prop_enum;
3636 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3637 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
3641 * Bitmask enum properties have the additional constraint of values
3644 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3648 if (!list_empty(&property->enum_blob_list)) {
3649 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3650 if (prop_enum->value == value) {
3651 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3652 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3658 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3662 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3663 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3664 prop_enum->value = value;
3666 property->values[index] = value;
3667 list_add_tail(&prop_enum->head, &property->enum_blob_list);
3670 EXPORT_SYMBOL(drm_property_add_enum);
3673 * drm_property_destroy - destroy a drm property
3675 * @property: property to destry
3677 * This function frees a property including any attached resources like
3678 * enumeration values.
3680 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3682 struct drm_property_enum *prop_enum, *pt;
3684 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
3685 list_del(&prop_enum->head);
3689 if (property->num_values)
3690 kfree(property->values);
3691 drm_mode_object_put(dev, &property->base);
3692 list_del(&property->head);
3695 EXPORT_SYMBOL(drm_property_destroy);
3698 * drm_object_attach_property - attach a property to a modeset object
3699 * @obj: drm modeset object
3700 * @property: property to attach
3701 * @init_val: initial value of the property
3703 * This attaches the given property to the modeset object with the given initial
3704 * value. Currently this function cannot fail since the properties are stored in
3705 * a statically sized array.
3707 void drm_object_attach_property(struct drm_mode_object *obj,
3708 struct drm_property *property,
3711 int count = obj->properties->count;
3713 if (count == DRM_OBJECT_MAX_PROPERTY) {
3714 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3715 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3716 "you see this message on the same object type.\n",
3721 obj->properties->ids[count] = property->base.id;
3722 obj->properties->values[count] = init_val;
3723 obj->properties->count++;
3725 EXPORT_SYMBOL(drm_object_attach_property);
3728 * drm_object_property_set_value - set the value of a property
3729 * @obj: drm mode object to set property value for
3730 * @property: property to set
3731 * @val: value the property should be set to
3733 * This functions sets a given property on a given object. This function only
3734 * changes the software state of the property, it does not call into the
3735 * driver's ->set_property callback.
3738 * Zero on success, error code on failure.
3740 int drm_object_property_set_value(struct drm_mode_object *obj,
3741 struct drm_property *property, uint64_t val)
3745 for (i = 0; i < obj->properties->count; i++) {
3746 if (obj->properties->ids[i] == property->base.id) {
3747 obj->properties->values[i] = val;
3754 EXPORT_SYMBOL(drm_object_property_set_value);
3757 * drm_object_property_get_value - retrieve the value of a property
3758 * @obj: drm mode object to get property value from
3759 * @property: property to retrieve
3760 * @val: storage for the property value
3762 * This function retrieves the softare state of the given property for the given
3763 * property. Since there is no driver callback to retrieve the current property
3764 * value this might be out of sync with the hardware, depending upon the driver
3768 * Zero on success, error code on failure.
3770 int drm_object_property_get_value(struct drm_mode_object *obj,
3771 struct drm_property *property, uint64_t *val)
3775 for (i = 0; i < obj->properties->count; i++) {
3776 if (obj->properties->ids[i] == property->base.id) {
3777 *val = obj->properties->values[i];
3784 EXPORT_SYMBOL(drm_object_property_get_value);
3787 * drm_mode_getproperty_ioctl - get the current value of a connector's property
3790 * @file_priv: DRM file info
3792 * This function retrieves the current value for an connectors's property.
3794 * Called by the user via ioctl.
3797 * Zero on success, errno on failure.
3799 int drm_mode_getproperty_ioctl(struct drm_device *dev,
3800 void *data, struct drm_file *file_priv)
3802 struct drm_mode_get_property *out_resp = data;
3803 struct drm_property *property;
3806 int value_count = 0;
3809 struct drm_property_enum *prop_enum;
3810 struct drm_mode_property_enum __user *enum_ptr;
3811 struct drm_property_blob *prop_blob;
3812 uint32_t __user *blob_id_ptr;
3813 uint64_t __user *values_ptr;
3814 uint32_t __user *blob_length_ptr;
3816 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3819 drm_modeset_lock_all(dev);
3820 property = drm_property_find(dev, out_resp->prop_id);
3826 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3827 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3828 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
3830 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
3831 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
3835 value_count = property->num_values;
3837 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
3838 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
3839 out_resp->flags = property->flags;
3841 if ((out_resp->count_values >= value_count) && value_count) {
3842 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
3843 for (i = 0; i < value_count; i++) {
3844 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
3850 out_resp->count_values = value_count;
3852 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3853 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3854 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
3856 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3857 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3859 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
3864 if (copy_to_user(&enum_ptr[copied].name,
3865 &prop_enum->name, DRM_PROP_NAME_LEN)) {
3872 out_resp->count_enum_blobs = enum_count;
3875 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
3876 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
3878 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr;
3879 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr;
3881 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
3882 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
3887 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
3895 out_resp->count_enum_blobs = blob_count;
3898 drm_modeset_unlock_all(dev);
3902 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
3905 struct drm_property_blob *blob;
3908 if (!length || !data)
3911 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
3915 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
3921 blob->length = length;
3923 memcpy(blob->data, data, length);
3925 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
3929 static void drm_property_destroy_blob(struct drm_device *dev,
3930 struct drm_property_blob *blob)
3932 drm_mode_object_put(dev, &blob->base);
3933 list_del(&blob->head);
3938 * drm_mode_getblob_ioctl - get the contents of a blob property value
3941 * @file_priv: DRM file info
3943 * This function retrieves the contents of a blob property. The value stored in
3944 * an object's blob property is just a normal modeset object id.
3946 * Called by the user via ioctl.
3949 * Zero on success, errno on failure.
3951 int drm_mode_getblob_ioctl(struct drm_device *dev,
3952 void *data, struct drm_file *file_priv)
3954 struct drm_mode_get_blob *out_resp = data;
3955 struct drm_property_blob *blob;
3957 void __user *blob_ptr;
3959 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3962 drm_modeset_lock_all(dev);
3963 blob = drm_property_blob_find(dev, out_resp->blob_id);
3969 if (out_resp->length == blob->length) {
3970 blob_ptr = (void __user *)(unsigned long)out_resp->data;
3971 if (copy_to_user(blob_ptr, blob->data, blob->length)){
3976 out_resp->length = blob->length;
3979 drm_modeset_unlock_all(dev);
3983 int drm_mode_connector_set_path_property(struct drm_connector *connector,
3986 struct drm_device *dev = connector->dev;
3988 size = strlen(path) + 1;
3990 connector->path_blob_ptr = drm_property_create_blob(connector->dev,
3992 if (!connector->path_blob_ptr)
3995 ret = drm_object_property_set_value(&connector->base,
3996 dev->mode_config.path_property,
3997 connector->path_blob_ptr->base.id);
4000 EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4003 * drm_mode_connector_update_edid_property - update the edid property of a connector
4004 * @connector: drm connector
4005 * @edid: new value of the edid property
4007 * This function creates a new blob modeset object and assigns its id to the
4008 * connector's edid property.
4011 * Zero on success, errno on failure.
4013 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4016 struct drm_device *dev = connector->dev;
4019 /* ignore requests to set edid when overridden */
4020 if (connector->override_edid)
4023 if (connector->edid_blob_ptr)
4024 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
4026 /* Delete edid, when there is none. */
4028 connector->edid_blob_ptr = NULL;
4029 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
4033 size = EDID_LENGTH * (1 + edid->extensions);
4034 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
4036 if (!connector->edid_blob_ptr)
4039 ret = drm_object_property_set_value(&connector->base,
4040 dev->mode_config.edid_property,
4041 connector->edid_blob_ptr->base.id);
4045 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4047 static bool drm_property_change_is_valid(struct drm_property *property,
4050 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4053 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
4054 if (value < property->values[0] || value > property->values[1])
4057 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4058 int64_t svalue = U642I64(value);
4059 if (svalue < U642I64(property->values[0]) ||
4060 svalue > U642I64(property->values[1]))
4063 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4065 uint64_t valid_mask = 0;
4066 for (i = 0; i < property->num_values; i++)
4067 valid_mask |= (1ULL << property->values[i]);
4068 return !(value & ~valid_mask);
4069 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
4070 /* Only the driver knows */
4072 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4073 struct drm_mode_object *obj;
4074 /* a zero value for an object property translates to null: */
4078 * NOTE: use _object_find() directly to bypass restriction on
4079 * looking up refcnt'd objects (ie. fb's). For a refcnt'd
4080 * object this could race against object finalization, so it
4081 * simply tells us that the object *was* valid. Which is good
4084 obj = _object_find(property->dev, value, property->values[0]);
4088 for (i = 0; i < property->num_values; i++)
4089 if (property->values[i] == value)
4096 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4099 * @file_priv: DRM file info
4101 * This function sets the current value for a connectors's property. It also
4102 * calls into a driver's ->set_property callback to update the hardware state
4104 * Called by the user via ioctl.
4107 * Zero on success, errno on failure.
4109 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4110 void *data, struct drm_file *file_priv)
4112 struct drm_mode_connector_set_property *conn_set_prop = data;
4113 struct drm_mode_obj_set_property obj_set_prop = {
4114 .value = conn_set_prop->value,
4115 .prop_id = conn_set_prop->prop_id,
4116 .obj_id = conn_set_prop->connector_id,
4117 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4120 /* It does all the locking and checking we need */
4121 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
4124 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4125 struct drm_property *property,
4129 struct drm_connector *connector = obj_to_connector(obj);
4131 /* Do DPMS ourselves */
4132 if (property == connector->dev->mode_config.dpms_property) {
4133 if (connector->funcs->dpms)
4134 (*connector->funcs->dpms)(connector, (int)value);
4136 } else if (connector->funcs->set_property)
4137 ret = connector->funcs->set_property(connector, property, value);
4139 /* store the property value if successful */
4141 drm_object_property_set_value(&connector->base, property, value);
4145 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4146 struct drm_property *property,
4150 struct drm_crtc *crtc = obj_to_crtc(obj);
4152 if (crtc->funcs->set_property)
4153 ret = crtc->funcs->set_property(crtc, property, value);
4155 drm_object_property_set_value(obj, property, value);
4160 static int drm_mode_plane_set_obj_prop(struct drm_mode_object *obj,
4161 struct drm_property *property,
4165 struct drm_plane *plane = obj_to_plane(obj);
4167 if (plane->funcs->set_property)
4168 ret = plane->funcs->set_property(plane, property, value);
4170 drm_object_property_set_value(obj, property, value);
4176 * drm_mode_getproperty_ioctl - get the current value of a object's property
4179 * @file_priv: DRM file info
4181 * This function retrieves the current value for an object's property. Compared
4182 * to the connector specific ioctl this one is extended to also work on crtc and
4185 * Called by the user via ioctl.
4188 * Zero on success, errno on failure.
4190 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4191 struct drm_file *file_priv)
4193 struct drm_mode_obj_get_properties *arg = data;
4194 struct drm_mode_object *obj;
4198 int props_count = 0;
4199 uint32_t __user *props_ptr;
4200 uint64_t __user *prop_values_ptr;
4202 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4205 drm_modeset_lock_all(dev);
4207 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4212 if (!obj->properties) {
4217 props_count = obj->properties->count;
4219 /* This ioctl is called twice, once to determine how much space is
4220 * needed, and the 2nd time to fill it. */
4221 if ((arg->count_props >= props_count) && props_count) {
4223 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
4224 prop_values_ptr = (uint64_t __user *)(unsigned long)
4225 (arg->prop_values_ptr);
4226 for (i = 0; i < props_count; i++) {
4227 if (put_user(obj->properties->ids[i],
4228 props_ptr + copied)) {
4232 if (put_user(obj->properties->values[i],
4233 prop_values_ptr + copied)) {
4240 arg->count_props = props_count;
4242 drm_modeset_unlock_all(dev);
4247 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4250 * @file_priv: DRM file info
4252 * This function sets the current value for an object's property. It also calls
4253 * into a driver's ->set_property callback to update the hardware state.
4254 * Compared to the connector specific ioctl this one is extended to also work on
4255 * crtc and plane objects.
4257 * Called by the user via ioctl.
4260 * Zero on success, errno on failure.
4262 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4263 struct drm_file *file_priv)
4265 struct drm_mode_obj_set_property *arg = data;
4266 struct drm_mode_object *arg_obj;
4267 struct drm_mode_object *prop_obj;
4268 struct drm_property *property;
4272 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4275 drm_modeset_lock_all(dev);
4277 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4282 if (!arg_obj->properties)
4285 for (i = 0; i < arg_obj->properties->count; i++)
4286 if (arg_obj->properties->ids[i] == arg->prop_id)
4289 if (i == arg_obj->properties->count)
4292 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4293 DRM_MODE_OBJECT_PROPERTY);
4298 property = obj_to_property(prop_obj);
4300 if (!drm_property_change_is_valid(property, arg->value))
4303 switch (arg_obj->type) {
4304 case DRM_MODE_OBJECT_CONNECTOR:
4305 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4308 case DRM_MODE_OBJECT_CRTC:
4309 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4311 case DRM_MODE_OBJECT_PLANE:
4312 ret = drm_mode_plane_set_obj_prop(arg_obj, property, arg->value);
4317 drm_modeset_unlock_all(dev);
4322 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4323 * @connector: connector to attach
4324 * @encoder: encoder to attach @connector to
4326 * This function links up a connector to an encoder. Note that the routing
4327 * restrictions between encoders and crtcs are exposed to userspace through the
4328 * possible_clones and possible_crtcs bitmasks.
4331 * Zero on success, errno on failure.
4333 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4334 struct drm_encoder *encoder)
4338 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4339 if (connector->encoder_ids[i] == 0) {
4340 connector->encoder_ids[i] = encoder->base.id;
4346 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4349 * drm_mode_crtc_set_gamma_size - set the gamma table size
4350 * @crtc: CRTC to set the gamma table size for
4351 * @gamma_size: size of the gamma table
4353 * Drivers which support gamma tables should set this to the supported gamma
4354 * table size when initializing the CRTC. Currently the drm core only supports a
4355 * fixed gamma table size.
4358 * Zero on success, errno on failure.
4360 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
4363 crtc->gamma_size = gamma_size;
4365 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
4366 if (!crtc->gamma_store) {
4367 crtc->gamma_size = 0;
4373 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
4376 * drm_mode_gamma_set_ioctl - set the gamma table
4379 * @file_priv: DRM file info
4381 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4382 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4384 * Called by the user via ioctl.
4387 * Zero on success, errno on failure.
4389 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
4390 void *data, struct drm_file *file_priv)
4392 struct drm_mode_crtc_lut *crtc_lut = data;
4393 struct drm_crtc *crtc;
4394 void *r_base, *g_base, *b_base;
4398 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4401 drm_modeset_lock_all(dev);
4402 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4408 if (crtc->funcs->gamma_set == NULL) {
4413 /* memcpy into gamma store */
4414 if (crtc_lut->gamma_size != crtc->gamma_size) {
4419 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4420 r_base = crtc->gamma_store;
4421 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4426 g_base = r_base + size;
4427 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4432 b_base = g_base + size;
4433 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4438 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
4441 drm_modeset_unlock_all(dev);
4447 * drm_mode_gamma_get_ioctl - get the gamma table
4450 * @file_priv: DRM file info
4452 * Copy the current gamma table into the storage provided. This also provides
4453 * the gamma table size the driver expects, which can be used to size the
4454 * allocated storage.
4456 * Called by the user via ioctl.
4459 * Zero on success, errno on failure.
4461 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4462 void *data, struct drm_file *file_priv)
4464 struct drm_mode_crtc_lut *crtc_lut = data;
4465 struct drm_crtc *crtc;
4466 void *r_base, *g_base, *b_base;
4470 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4473 drm_modeset_lock_all(dev);
4474 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4480 /* memcpy into gamma store */
4481 if (crtc_lut->gamma_size != crtc->gamma_size) {
4486 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4487 r_base = crtc->gamma_store;
4488 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4493 g_base = r_base + size;
4494 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4499 b_base = g_base + size;
4500 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4505 drm_modeset_unlock_all(dev);
4510 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4513 * @file_priv: DRM file info
4515 * This schedules an asynchronous update on a given CRTC, called page flip.
4516 * Optionally a drm event is generated to signal the completion of the event.
4517 * Generic drivers cannot assume that a pageflip with changed framebuffer
4518 * properties (including driver specific metadata like tiling layout) will work,
4519 * but some drivers support e.g. pixel format changes through the pageflip
4522 * Called by the user via ioctl.
4525 * Zero on success, errno on failure.
4527 int drm_mode_page_flip_ioctl(struct drm_device *dev,
4528 void *data, struct drm_file *file_priv)
4530 struct drm_mode_crtc_page_flip *page_flip = data;
4531 struct drm_crtc *crtc;
4532 struct drm_framebuffer *fb = NULL, *old_fb = NULL;
4533 struct drm_pending_vblank_event *e = NULL;
4534 unsigned long flags;
4537 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4538 page_flip->reserved != 0)
4541 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4544 crtc = drm_crtc_find(dev, page_flip->crtc_id);
4548 drm_modeset_lock(&crtc->mutex, NULL);
4549 if (crtc->primary->fb == NULL) {
4550 /* The framebuffer is currently unbound, presumably
4551 * due to a hotplug event, that userspace has not
4558 if (crtc->funcs->page_flip == NULL)
4561 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
4567 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4571 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
4572 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4577 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4579 spin_lock_irqsave(&dev->event_lock, flags);
4580 if (file_priv->event_space < sizeof e->event) {
4581 spin_unlock_irqrestore(&dev->event_lock, flags);
4584 file_priv->event_space -= sizeof e->event;
4585 spin_unlock_irqrestore(&dev->event_lock, flags);
4587 e = kzalloc(sizeof *e, GFP_KERNEL);
4589 spin_lock_irqsave(&dev->event_lock, flags);
4590 file_priv->event_space += sizeof e->event;
4591 spin_unlock_irqrestore(&dev->event_lock, flags);
4595 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
4596 e->event.base.length = sizeof e->event;
4597 e->event.user_data = page_flip->user_data;
4598 e->base.event = &e->event.base;
4599 e->base.file_priv = file_priv;
4601 (void (*) (struct drm_pending_event *)) kfree;
4604 old_fb = crtc->primary->fb;
4605 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
4607 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4608 spin_lock_irqsave(&dev->event_lock, flags);
4609 file_priv->event_space += sizeof e->event;
4610 spin_unlock_irqrestore(&dev->event_lock, flags);
4613 /* Keep the old fb, don't unref it. */
4617 * Warn if the driver hasn't properly updated the crtc->fb
4618 * field to reflect that the new framebuffer is now used.
4619 * Failing to do so will screw with the reference counting
4622 WARN_ON(crtc->primary->fb != fb);
4623 /* Unref only the old framebuffer. */
4629 drm_framebuffer_unreference(fb);
4631 drm_framebuffer_unreference(old_fb);
4632 drm_modeset_unlock(&crtc->mutex);
4638 * drm_mode_config_reset - call ->reset callbacks
4641 * This functions calls all the crtc's, encoder's and connector's ->reset
4642 * callback. Drivers can use this in e.g. their driver load or resume code to
4643 * reset hardware and software state.
4645 void drm_mode_config_reset(struct drm_device *dev)
4647 struct drm_crtc *crtc;
4648 struct drm_encoder *encoder;
4649 struct drm_connector *connector;
4651 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4652 if (crtc->funcs->reset)
4653 crtc->funcs->reset(crtc);
4655 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4656 if (encoder->funcs->reset)
4657 encoder->funcs->reset(encoder);
4659 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4660 connector->status = connector_status_unknown;
4662 if (connector->funcs->reset)
4663 connector->funcs->reset(connector);
4666 EXPORT_SYMBOL(drm_mode_config_reset);
4669 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4672 * @file_priv: DRM file info
4674 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4675 * TTM or something else entirely) and returns the resulting buffer handle. This
4676 * handle can then be wrapped up into a framebuffer modeset object.
4678 * Note that userspace is not allowed to use such objects for render
4679 * acceleration - drivers must create their own private ioctls for such a use
4682 * Called by the user via ioctl.
4685 * Zero on success, errno on failure.
4687 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
4688 void *data, struct drm_file *file_priv)
4690 struct drm_mode_create_dumb *args = data;
4691 u32 cpp, stride, size;
4693 if (!dev->driver->dumb_create)
4695 if (!args->width || !args->height || !args->bpp)
4698 /* overflow checks for 32bit size calculations */
4699 /* NOTE: DIV_ROUND_UP() can overflow */
4700 cpp = DIV_ROUND_UP(args->bpp, 8);
4701 if (!cpp || cpp > 0xffffffffU / args->width)
4703 stride = cpp * args->width;
4704 if (args->height > 0xffffffffU / stride)
4707 /* test for wrap-around */
4708 size = args->height * stride;
4709 if (PAGE_ALIGN(size) == 0)
4712 return dev->driver->dumb_create(file_priv, dev, args);
4716 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4719 * @file_priv: DRM file info
4721 * Allocate an offset in the drm device node's address space to be able to
4722 * memory map a dumb buffer.
4724 * Called by the user via ioctl.
4727 * Zero on success, errno on failure.
4729 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
4730 void *data, struct drm_file *file_priv)
4732 struct drm_mode_map_dumb *args = data;
4734 /* call driver ioctl to get mmap offset */
4735 if (!dev->driver->dumb_map_offset)
4738 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
4742 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4745 * @file_priv: DRM file info
4747 * This destroys the userspace handle for the given dumb backing storage buffer.
4748 * Since buffer objects must be reference counted in the kernel a buffer object
4749 * won't be immediately freed if a framebuffer modeset object still uses it.
4751 * Called by the user via ioctl.
4754 * Zero on success, errno on failure.
4756 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
4757 void *data, struct drm_file *file_priv)
4759 struct drm_mode_destroy_dumb *args = data;
4761 if (!dev->driver->dumb_destroy)
4764 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
4768 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4769 * @format: pixel format (DRM_FORMAT_*)
4770 * @depth: storage for the depth value
4771 * @bpp: storage for the bpp value
4773 * This only supports RGB formats here for compat with code that doesn't use
4774 * pixel formats directly yet.
4776 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
4781 case DRM_FORMAT_RGB332:
4782 case DRM_FORMAT_BGR233:
4786 case DRM_FORMAT_XRGB1555:
4787 case DRM_FORMAT_XBGR1555:
4788 case DRM_FORMAT_RGBX5551:
4789 case DRM_FORMAT_BGRX5551:
4790 case DRM_FORMAT_ARGB1555:
4791 case DRM_FORMAT_ABGR1555:
4792 case DRM_FORMAT_RGBA5551:
4793 case DRM_FORMAT_BGRA5551:
4797 case DRM_FORMAT_RGB565:
4798 case DRM_FORMAT_BGR565:
4802 case DRM_FORMAT_RGB888:
4803 case DRM_FORMAT_BGR888:
4807 case DRM_FORMAT_XRGB8888:
4808 case DRM_FORMAT_XBGR8888:
4809 case DRM_FORMAT_RGBX8888:
4810 case DRM_FORMAT_BGRX8888:
4814 case DRM_FORMAT_XRGB2101010:
4815 case DRM_FORMAT_XBGR2101010:
4816 case DRM_FORMAT_RGBX1010102:
4817 case DRM_FORMAT_BGRX1010102:
4818 case DRM_FORMAT_ARGB2101010:
4819 case DRM_FORMAT_ABGR2101010:
4820 case DRM_FORMAT_RGBA1010102:
4821 case DRM_FORMAT_BGRA1010102:
4825 case DRM_FORMAT_ARGB8888:
4826 case DRM_FORMAT_ABGR8888:
4827 case DRM_FORMAT_RGBA8888:
4828 case DRM_FORMAT_BGRA8888:
4833 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4834 drm_get_format_name(format));
4840 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
4843 * drm_format_num_planes - get the number of planes for format
4844 * @format: pixel format (DRM_FORMAT_*)
4847 * The number of planes used by the specified pixel format.
4849 int drm_format_num_planes(uint32_t format)
4852 case DRM_FORMAT_YUV410:
4853 case DRM_FORMAT_YVU410:
4854 case DRM_FORMAT_YUV411:
4855 case DRM_FORMAT_YVU411:
4856 case DRM_FORMAT_YUV420:
4857 case DRM_FORMAT_YVU420:
4858 case DRM_FORMAT_YUV422:
4859 case DRM_FORMAT_YVU422:
4860 case DRM_FORMAT_YUV444:
4861 case DRM_FORMAT_YVU444:
4863 case DRM_FORMAT_NV12:
4864 case DRM_FORMAT_NV21:
4865 case DRM_FORMAT_NV16:
4866 case DRM_FORMAT_NV61:
4867 case DRM_FORMAT_NV24:
4868 case DRM_FORMAT_NV42:
4874 EXPORT_SYMBOL(drm_format_num_planes);
4877 * drm_format_plane_cpp - determine the bytes per pixel value
4878 * @format: pixel format (DRM_FORMAT_*)
4879 * @plane: plane index
4882 * The bytes per pixel value for the specified plane.
4884 int drm_format_plane_cpp(uint32_t format, int plane)
4889 if (plane >= drm_format_num_planes(format))
4893 case DRM_FORMAT_YUYV:
4894 case DRM_FORMAT_YVYU:
4895 case DRM_FORMAT_UYVY:
4896 case DRM_FORMAT_VYUY:
4898 case DRM_FORMAT_NV12:
4899 case DRM_FORMAT_NV21:
4900 case DRM_FORMAT_NV16:
4901 case DRM_FORMAT_NV61:
4902 case DRM_FORMAT_NV24:
4903 case DRM_FORMAT_NV42:
4904 return plane ? 2 : 1;
4905 case DRM_FORMAT_YUV410:
4906 case DRM_FORMAT_YVU410:
4907 case DRM_FORMAT_YUV411:
4908 case DRM_FORMAT_YVU411:
4909 case DRM_FORMAT_YUV420:
4910 case DRM_FORMAT_YVU420:
4911 case DRM_FORMAT_YUV422:
4912 case DRM_FORMAT_YVU422:
4913 case DRM_FORMAT_YUV444:
4914 case DRM_FORMAT_YVU444:
4917 drm_fb_get_bpp_depth(format, &depth, &bpp);
4921 EXPORT_SYMBOL(drm_format_plane_cpp);
4924 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
4925 * @format: pixel format (DRM_FORMAT_*)
4928 * The horizontal chroma subsampling factor for the
4929 * specified pixel format.
4931 int drm_format_horz_chroma_subsampling(uint32_t format)
4934 case DRM_FORMAT_YUV411:
4935 case DRM_FORMAT_YVU411:
4936 case DRM_FORMAT_YUV410:
4937 case DRM_FORMAT_YVU410:
4939 case DRM_FORMAT_YUYV:
4940 case DRM_FORMAT_YVYU:
4941 case DRM_FORMAT_UYVY:
4942 case DRM_FORMAT_VYUY:
4943 case DRM_FORMAT_NV12:
4944 case DRM_FORMAT_NV21:
4945 case DRM_FORMAT_NV16:
4946 case DRM_FORMAT_NV61:
4947 case DRM_FORMAT_YUV422:
4948 case DRM_FORMAT_YVU422:
4949 case DRM_FORMAT_YUV420:
4950 case DRM_FORMAT_YVU420:
4956 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
4959 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
4960 * @format: pixel format (DRM_FORMAT_*)
4963 * The vertical chroma subsampling factor for the
4964 * specified pixel format.
4966 int drm_format_vert_chroma_subsampling(uint32_t format)
4969 case DRM_FORMAT_YUV410:
4970 case DRM_FORMAT_YVU410:
4972 case DRM_FORMAT_YUV420:
4973 case DRM_FORMAT_YVU420:
4974 case DRM_FORMAT_NV12:
4975 case DRM_FORMAT_NV21:
4981 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
4984 * drm_rotation_simplify() - Try to simplify the rotation
4985 * @rotation: Rotation to be simplified
4986 * @supported_rotations: Supported rotations
4988 * Attempt to simplify the rotation to a form that is supported.
4989 * Eg. if the hardware supports everything except DRM_REFLECT_X
4990 * one could call this function like this:
4992 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
4993 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
4994 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
4996 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
4997 * transforms the hardware supports, this function may not
4998 * be able to produce a supported transform, so the caller should
4999 * check the result afterwards.
5001 unsigned int drm_rotation_simplify(unsigned int rotation,
5002 unsigned int supported_rotations)
5004 if (rotation & ~supported_rotations) {
5005 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5006 rotation = (rotation & ~0xf) | BIT((ffs(rotation & 0xf) + 1) % 4);
5011 EXPORT_SYMBOL(drm_rotation_simplify);
5014 * drm_mode_config_init - initialize DRM mode_configuration structure
5017 * Initialize @dev's mode_config structure, used for tracking the graphics
5018 * configuration of @dev.
5020 * Since this initializes the modeset locks, no locking is possible. Which is no
5021 * problem, since this should happen single threaded at init time. It is the
5022 * driver's problem to ensure this guarantee.
5025 void drm_mode_config_init(struct drm_device *dev)
5027 mutex_init(&dev->mode_config.mutex);
5028 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
5029 mutex_init(&dev->mode_config.idr_mutex);
5030 mutex_init(&dev->mode_config.fb_lock);
5031 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5032 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5033 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5034 INIT_LIST_HEAD(&dev->mode_config.bridge_list);
5035 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5036 INIT_LIST_HEAD(&dev->mode_config.property_list);
5037 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5038 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5039 idr_init(&dev->mode_config.crtc_idr);
5041 drm_modeset_lock_all(dev);
5042 drm_mode_create_standard_connector_properties(dev);
5043 drm_mode_create_standard_plane_properties(dev);
5044 drm_modeset_unlock_all(dev);
5046 /* Just to be sure */
5047 dev->mode_config.num_fb = 0;
5048 dev->mode_config.num_connector = 0;
5049 dev->mode_config.num_crtc = 0;
5050 dev->mode_config.num_encoder = 0;
5051 dev->mode_config.num_overlay_plane = 0;
5052 dev->mode_config.num_total_plane = 0;
5054 EXPORT_SYMBOL(drm_mode_config_init);
5057 * drm_mode_config_cleanup - free up DRM mode_config info
5060 * Free up all the connectors and CRTCs associated with this DRM device, then
5061 * free up the framebuffers and associated buffer objects.
5063 * Note that since this /should/ happen single-threaded at driver/device
5064 * teardown time, no locking is required. It's the driver's job to ensure that
5065 * this guarantee actually holds true.
5067 * FIXME: cleanup any dangling user buffer objects too
5069 void drm_mode_config_cleanup(struct drm_device *dev)
5071 struct drm_connector *connector, *ot;
5072 struct drm_crtc *crtc, *ct;
5073 struct drm_encoder *encoder, *enct;
5074 struct drm_bridge *bridge, *brt;
5075 struct drm_framebuffer *fb, *fbt;
5076 struct drm_property *property, *pt;
5077 struct drm_property_blob *blob, *bt;
5078 struct drm_plane *plane, *plt;
5080 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5082 encoder->funcs->destroy(encoder);
5085 list_for_each_entry_safe(bridge, brt,
5086 &dev->mode_config.bridge_list, head) {
5087 bridge->funcs->destroy(bridge);
5090 list_for_each_entry_safe(connector, ot,
5091 &dev->mode_config.connector_list, head) {
5092 connector->funcs->destroy(connector);
5095 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5097 drm_property_destroy(dev, property);
5100 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5102 drm_property_destroy_blob(dev, blob);
5106 * Single-threaded teardown context, so it's not required to grab the
5107 * fb_lock to protect against concurrent fb_list access. Contrary, it
5108 * would actually deadlock with the drm_framebuffer_cleanup function.
5110 * Also, if there are any framebuffers left, that's a driver leak now,
5111 * so politely WARN about this.
5113 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5114 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5115 drm_framebuffer_remove(fb);
5118 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5120 plane->funcs->destroy(plane);
5123 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5124 crtc->funcs->destroy(crtc);
5127 idr_destroy(&dev->mode_config.crtc_idr);
5128 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
5130 EXPORT_SYMBOL(drm_mode_config_cleanup);
5132 struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5133 unsigned int supported_rotations)
5135 static const struct drm_prop_enum_list props[] = {
5136 { DRM_ROTATE_0, "rotate-0" },
5137 { DRM_ROTATE_90, "rotate-90" },
5138 { DRM_ROTATE_180, "rotate-180" },
5139 { DRM_ROTATE_270, "rotate-270" },
5140 { DRM_REFLECT_X, "reflect-x" },
5141 { DRM_REFLECT_Y, "reflect-y" },
5144 return drm_property_create_bitmask(dev, 0, "rotation",
5145 props, ARRAY_SIZE(props),
5146 supported_rotations);
5148 EXPORT_SYMBOL(drm_mode_create_rotation_property);