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) ||
452 mutex_unlock(&dev->mode_config.idr_mutex);
458 * drm_mode_object_find - look up a drm object with static lifetime
460 * @id: id of the mode object
461 * @type: type of the mode object
463 * Note that framebuffers cannot be looked up with this functions - since those
464 * are reference counted, they need special treatment. Even with
465 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
466 * rather than WARN_ON()).
468 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
469 uint32_t id, uint32_t type)
471 struct drm_mode_object *obj = NULL;
473 /* Framebuffers are reference counted and need their own lookup
475 WARN_ON(type == DRM_MODE_OBJECT_FB);
476 obj = _object_find(dev, id, type);
477 /* don't leak out unref'd fb's */
478 if (obj && (obj->type == DRM_MODE_OBJECT_FB))
482 EXPORT_SYMBOL(drm_mode_object_find);
485 * drm_framebuffer_init - initialize a framebuffer
487 * @fb: framebuffer to be initialized
488 * @funcs: ... with these functions
490 * Allocates an ID for the framebuffer's parent mode object, sets its mode
491 * functions & device file and adds it to the master fd list.
494 * This functions publishes the fb and makes it available for concurrent access
495 * by other users. Which means by this point the fb _must_ be fully set up -
496 * since all the fb attributes are invariant over its lifetime, no further
497 * locking but only correct reference counting is required.
500 * Zero on success, error code on failure.
502 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
503 const struct drm_framebuffer_funcs *funcs)
507 mutex_lock(&dev->mode_config.fb_lock);
508 kref_init(&fb->refcount);
509 INIT_LIST_HEAD(&fb->filp_head);
513 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
517 /* Grab the idr reference. */
518 drm_framebuffer_reference(fb);
520 dev->mode_config.num_fb++;
521 list_add(&fb->head, &dev->mode_config.fb_list);
523 mutex_unlock(&dev->mode_config.fb_lock);
527 EXPORT_SYMBOL(drm_framebuffer_init);
529 static void drm_framebuffer_free(struct kref *kref)
531 struct drm_framebuffer *fb =
532 container_of(kref, struct drm_framebuffer, refcount);
533 fb->funcs->destroy(fb);
536 static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
539 struct drm_mode_object *obj = NULL;
540 struct drm_framebuffer *fb;
542 mutex_lock(&dev->mode_config.idr_mutex);
543 obj = idr_find(&dev->mode_config.crtc_idr, id);
544 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
548 mutex_unlock(&dev->mode_config.idr_mutex);
554 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
556 * @id: id of the fb object
558 * If successful, this grabs an additional reference to the framebuffer -
559 * callers need to make sure to eventually unreference the returned framebuffer
560 * again, using @drm_framebuffer_unreference.
562 struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
565 struct drm_framebuffer *fb;
567 mutex_lock(&dev->mode_config.fb_lock);
568 fb = __drm_framebuffer_lookup(dev, id);
570 drm_framebuffer_reference(fb);
571 mutex_unlock(&dev->mode_config.fb_lock);
575 EXPORT_SYMBOL(drm_framebuffer_lookup);
578 * drm_framebuffer_unreference - unref a framebuffer
579 * @fb: framebuffer to unref
581 * This functions decrements the fb's refcount and frees it if it drops to zero.
583 void drm_framebuffer_unreference(struct drm_framebuffer *fb)
585 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
586 kref_put(&fb->refcount, drm_framebuffer_free);
588 EXPORT_SYMBOL(drm_framebuffer_unreference);
591 * drm_framebuffer_reference - incr the fb refcnt
594 * This functions increments the fb's refcount.
596 void drm_framebuffer_reference(struct drm_framebuffer *fb)
598 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
599 kref_get(&fb->refcount);
601 EXPORT_SYMBOL(drm_framebuffer_reference);
603 static void drm_framebuffer_free_bug(struct kref *kref)
608 static void __drm_framebuffer_unreference(struct drm_framebuffer *fb)
610 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
611 kref_put(&fb->refcount, drm_framebuffer_free_bug);
614 /* dev->mode_config.fb_lock must be held! */
615 static void __drm_framebuffer_unregister(struct drm_device *dev,
616 struct drm_framebuffer *fb)
618 mutex_lock(&dev->mode_config.idr_mutex);
619 idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
620 mutex_unlock(&dev->mode_config.idr_mutex);
624 __drm_framebuffer_unreference(fb);
628 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
629 * @fb: fb to unregister
631 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
632 * those used for fbdev. Note that the caller must hold a reference of it's own,
633 * i.e. the object may not be destroyed through this call (since it'll lead to a
634 * locking inversion).
636 void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
638 struct drm_device *dev = fb->dev;
640 mutex_lock(&dev->mode_config.fb_lock);
641 /* Mark fb as reaped and drop idr ref. */
642 __drm_framebuffer_unregister(dev, fb);
643 mutex_unlock(&dev->mode_config.fb_lock);
645 EXPORT_SYMBOL(drm_framebuffer_unregister_private);
648 * drm_framebuffer_cleanup - remove a framebuffer object
649 * @fb: framebuffer to remove
651 * Cleanup framebuffer. This function is intended to be used from the drivers
652 * ->destroy callback. It can also be used to clean up driver private
653 * framebuffers embedded into a larger structure.
655 * Note that this function does not remove the fb from active usuage - if it is
656 * still used anywhere, hilarity can ensue since userspace could call getfb on
657 * the id and get back -EINVAL. Obviously no concern at driver unload time.
659 * Also, the framebuffer will not be removed from the lookup idr - for
660 * user-created framebuffers this will happen in in the rmfb ioctl. For
661 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
662 * drm_framebuffer_unregister_private.
664 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
666 struct drm_device *dev = fb->dev;
668 mutex_lock(&dev->mode_config.fb_lock);
670 dev->mode_config.num_fb--;
671 mutex_unlock(&dev->mode_config.fb_lock);
673 EXPORT_SYMBOL(drm_framebuffer_cleanup);
676 * drm_framebuffer_remove - remove and unreference a framebuffer object
677 * @fb: framebuffer to remove
679 * Scans all the CRTCs and planes in @dev's mode_config. If they're
680 * using @fb, removes it, setting it to NULL. Then drops the reference to the
681 * passed-in framebuffer. Might take the modeset locks.
683 * Note that this function optimizes the cleanup away if the caller holds the
684 * last reference to the framebuffer. It is also guaranteed to not take the
685 * modeset locks in this case.
687 void drm_framebuffer_remove(struct drm_framebuffer *fb)
689 struct drm_device *dev = fb->dev;
690 struct drm_crtc *crtc;
691 struct drm_plane *plane;
692 struct drm_mode_set set;
695 WARN_ON(!list_empty(&fb->filp_head));
698 * drm ABI mandates that we remove any deleted framebuffers from active
699 * useage. But since most sane clients only remove framebuffers they no
700 * longer need, try to optimize this away.
702 * Since we're holding a reference ourselves, observing a refcount of 1
703 * means that we're the last holder and can skip it. Also, the refcount
704 * can never increase from 1 again, so we don't need any barriers or
707 * Note that userspace could try to race with use and instate a new
708 * usage _after_ we've cleared all current ones. End result will be an
709 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
712 if (atomic_read(&fb->refcount.refcount) > 1) {
713 drm_modeset_lock_all(dev);
714 /* remove from any CRTC */
715 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
716 if (crtc->primary->fb == fb) {
717 /* should turn off the crtc */
718 memset(&set, 0, sizeof(struct drm_mode_set));
721 ret = drm_mode_set_config_internal(&set);
723 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
727 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
729 drm_plane_force_disable(plane);
731 drm_modeset_unlock_all(dev);
734 drm_framebuffer_unreference(fb);
736 EXPORT_SYMBOL(drm_framebuffer_remove);
738 DEFINE_WW_CLASS(crtc_ww_class);
741 * drm_crtc_init_with_planes - Initialise a new CRTC object with
742 * specified primary and cursor planes.
744 * @crtc: CRTC object to init
745 * @primary: Primary plane for CRTC
746 * @cursor: Cursor plane for CRTC
747 * @funcs: callbacks for the new CRTC
749 * Inits a new object created as base part of a driver crtc object.
752 * Zero on success, error code on failure.
754 int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
755 struct drm_plane *primary,
756 struct drm_plane *cursor,
757 const struct drm_crtc_funcs *funcs)
759 struct drm_mode_config *config = &dev->mode_config;
764 crtc->invert_dimensions = false;
766 drm_modeset_lock_all(dev);
767 drm_modeset_lock_init(&crtc->mutex);
768 /* dropped by _unlock_all(): */
769 drm_modeset_lock(&crtc->mutex, config->acquire_ctx);
771 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
775 crtc->base.properties = &crtc->properties;
777 list_add_tail(&crtc->head, &config->crtc_list);
780 crtc->primary = primary;
781 crtc->cursor = cursor;
783 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
785 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
788 drm_modeset_unlock_all(dev);
792 EXPORT_SYMBOL(drm_crtc_init_with_planes);
795 * drm_crtc_cleanup - Clean up the core crtc usage
796 * @crtc: CRTC to cleanup
798 * This function cleans up @crtc and removes it from the DRM mode setting
799 * core. Note that the function does *not* free the crtc structure itself,
800 * this is the responsibility of the caller.
802 void drm_crtc_cleanup(struct drm_crtc *crtc)
804 struct drm_device *dev = crtc->dev;
806 kfree(crtc->gamma_store);
807 crtc->gamma_store = NULL;
809 drm_modeset_lock_fini(&crtc->mutex);
811 drm_mode_object_put(dev, &crtc->base);
812 list_del(&crtc->head);
813 dev->mode_config.num_crtc--;
815 EXPORT_SYMBOL(drm_crtc_cleanup);
818 * drm_crtc_index - find the index of a registered CRTC
819 * @crtc: CRTC to find index for
821 * Given a registered CRTC, return the index of that CRTC within a DRM
822 * device's list of CRTCs.
824 unsigned int drm_crtc_index(struct drm_crtc *crtc)
826 unsigned int index = 0;
827 struct drm_crtc *tmp;
829 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
838 EXPORT_SYMBOL(drm_crtc_index);
841 * drm_mode_remove - remove and free a mode
842 * @connector: connector list to modify
843 * @mode: mode to remove
845 * Remove @mode from @connector's mode list, then free it.
847 static void drm_mode_remove(struct drm_connector *connector,
848 struct drm_display_mode *mode)
850 list_del(&mode->head);
851 drm_mode_destroy(connector->dev, mode);
855 * drm_connector_init - Init a preallocated connector
857 * @connector: the connector to init
858 * @funcs: callbacks for this connector
859 * @connector_type: user visible type of the connector
861 * Initialises a preallocated connector. Connectors should be
862 * subclassed as part of driver connector objects.
865 * Zero on success, error code on failure.
867 int drm_connector_init(struct drm_device *dev,
868 struct drm_connector *connector,
869 const struct drm_connector_funcs *funcs,
873 struct ida *connector_ida =
874 &drm_connector_enum_list[connector_type].ida;
876 drm_modeset_lock_all(dev);
878 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false);
882 connector->base.properties = &connector->properties;
883 connector->dev = dev;
884 connector->funcs = funcs;
885 connector->connector_type = connector_type;
886 connector->connector_type_id =
887 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
888 if (connector->connector_type_id < 0) {
889 ret = connector->connector_type_id;
893 kasprintf(GFP_KERNEL, "%s-%d",
894 drm_connector_enum_list[connector_type].name,
895 connector->connector_type_id);
896 if (!connector->name) {
901 INIT_LIST_HEAD(&connector->probed_modes);
902 INIT_LIST_HEAD(&connector->modes);
903 connector->edid_blob_ptr = NULL;
904 connector->status = connector_status_unknown;
906 list_add_tail(&connector->head, &dev->mode_config.connector_list);
907 dev->mode_config.num_connector++;
909 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
910 drm_object_attach_property(&connector->base,
911 dev->mode_config.edid_property,
914 drm_object_attach_property(&connector->base,
915 dev->mode_config.dpms_property, 0);
917 connector->debugfs_entry = NULL;
921 drm_mode_object_put(dev, &connector->base);
924 drm_modeset_unlock_all(dev);
928 EXPORT_SYMBOL(drm_connector_init);
931 * drm_connector_cleanup - cleans up an initialised connector
932 * @connector: connector to cleanup
934 * Cleans up the connector but doesn't free the object.
936 void drm_connector_cleanup(struct drm_connector *connector)
938 struct drm_device *dev = connector->dev;
939 struct drm_display_mode *mode, *t;
941 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
942 drm_mode_remove(connector, mode);
944 list_for_each_entry_safe(mode, t, &connector->modes, head)
945 drm_mode_remove(connector, mode);
947 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
948 connector->connector_type_id);
950 drm_mode_object_put(dev, &connector->base);
951 kfree(connector->name);
952 connector->name = NULL;
953 list_del(&connector->head);
954 dev->mode_config.num_connector--;
956 EXPORT_SYMBOL(drm_connector_cleanup);
959 * drm_connector_register - register a connector
960 * @connector: the connector to register
962 * Register userspace interfaces for a connector
965 * Zero on success, error code on failure.
967 int drm_connector_register(struct drm_connector *connector)
971 drm_mode_object_register(connector->dev, &connector->base);
973 ret = drm_sysfs_connector_add(connector);
977 ret = drm_debugfs_connector_add(connector);
979 drm_sysfs_connector_remove(connector);
985 EXPORT_SYMBOL(drm_connector_register);
988 * drm_connector_unregister - unregister a connector
989 * @connector: the connector to unregister
991 * Unregister userspace interfaces for a connector
993 void drm_connector_unregister(struct drm_connector *connector)
995 drm_sysfs_connector_remove(connector);
996 drm_debugfs_connector_remove(connector);
998 EXPORT_SYMBOL(drm_connector_unregister);
1002 * drm_connector_unplug_all - unregister connector userspace interfaces
1005 * This function unregisters all connector userspace interfaces in sysfs. Should
1006 * be call when the device is disconnected, e.g. from an usb driver's
1007 * ->disconnect callback.
1009 void drm_connector_unplug_all(struct drm_device *dev)
1011 struct drm_connector *connector;
1013 /* taking the mode config mutex ends up in a clash with sysfs */
1014 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1015 drm_connector_unregister(connector);
1018 EXPORT_SYMBOL(drm_connector_unplug_all);
1021 * drm_bridge_init - initialize a drm transcoder/bridge
1023 * @bridge: transcoder/bridge to set up
1024 * @funcs: bridge function table
1026 * Initialises a preallocated bridge. Bridges should be
1027 * subclassed as part of driver connector objects.
1030 * Zero on success, error code on failure.
1032 int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
1033 const struct drm_bridge_funcs *funcs)
1037 drm_modeset_lock_all(dev);
1039 ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
1044 bridge->funcs = funcs;
1046 list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
1047 dev->mode_config.num_bridge++;
1050 drm_modeset_unlock_all(dev);
1053 EXPORT_SYMBOL(drm_bridge_init);
1056 * drm_bridge_cleanup - cleans up an initialised bridge
1057 * @bridge: bridge to cleanup
1059 * Cleans up the bridge but doesn't free the object.
1061 void drm_bridge_cleanup(struct drm_bridge *bridge)
1063 struct drm_device *dev = bridge->dev;
1065 drm_modeset_lock_all(dev);
1066 drm_mode_object_put(dev, &bridge->base);
1067 list_del(&bridge->head);
1068 dev->mode_config.num_bridge--;
1069 drm_modeset_unlock_all(dev);
1071 EXPORT_SYMBOL(drm_bridge_cleanup);
1074 * drm_encoder_init - Init a preallocated encoder
1076 * @encoder: the encoder to init
1077 * @funcs: callbacks for this encoder
1078 * @encoder_type: user visible type of the encoder
1080 * Initialises a preallocated encoder. Encoder should be
1081 * subclassed as part of driver encoder objects.
1084 * Zero on success, error code on failure.
1086 int drm_encoder_init(struct drm_device *dev,
1087 struct drm_encoder *encoder,
1088 const struct drm_encoder_funcs *funcs,
1093 drm_modeset_lock_all(dev);
1095 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1100 encoder->encoder_type = encoder_type;
1101 encoder->funcs = funcs;
1102 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1103 drm_encoder_enum_list[encoder_type].name,
1105 if (!encoder->name) {
1110 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1111 dev->mode_config.num_encoder++;
1115 drm_mode_object_put(dev, &encoder->base);
1118 drm_modeset_unlock_all(dev);
1122 EXPORT_SYMBOL(drm_encoder_init);
1125 * drm_encoder_cleanup - cleans up an initialised encoder
1126 * @encoder: encoder to cleanup
1128 * Cleans up the encoder but doesn't free the object.
1130 void drm_encoder_cleanup(struct drm_encoder *encoder)
1132 struct drm_device *dev = encoder->dev;
1133 drm_modeset_lock_all(dev);
1134 drm_mode_object_put(dev, &encoder->base);
1135 kfree(encoder->name);
1136 encoder->name = NULL;
1137 list_del(&encoder->head);
1138 dev->mode_config.num_encoder--;
1139 drm_modeset_unlock_all(dev);
1141 EXPORT_SYMBOL(drm_encoder_cleanup);
1144 * drm_universal_plane_init - Initialize a new universal plane object
1146 * @plane: plane object to init
1147 * @possible_crtcs: bitmask of possible CRTCs
1148 * @funcs: callbacks for the new plane
1149 * @formats: array of supported formats (%DRM_FORMAT_*)
1150 * @format_count: number of elements in @formats
1151 * @type: type of plane (overlay, primary, cursor)
1153 * Initializes a plane object of type @type.
1156 * Zero on success, error code on failure.
1158 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1159 unsigned long possible_crtcs,
1160 const struct drm_plane_funcs *funcs,
1161 const uint32_t *formats, uint32_t format_count,
1162 enum drm_plane_type type)
1166 drm_modeset_lock_all(dev);
1168 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1172 plane->base.properties = &plane->properties;
1174 plane->funcs = funcs;
1175 plane->format_types = kmalloc(sizeof(uint32_t) * format_count,
1177 if (!plane->format_types) {
1178 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1179 drm_mode_object_put(dev, &plane->base);
1184 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1185 plane->format_count = format_count;
1186 plane->possible_crtcs = possible_crtcs;
1189 list_add_tail(&plane->head, &dev->mode_config.plane_list);
1190 dev->mode_config.num_total_plane++;
1191 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1192 dev->mode_config.num_overlay_plane++;
1194 drm_object_attach_property(&plane->base,
1195 dev->mode_config.plane_type_property,
1199 drm_modeset_unlock_all(dev);
1203 EXPORT_SYMBOL(drm_universal_plane_init);
1206 * drm_plane_init - Initialize a legacy plane
1208 * @plane: plane object to init
1209 * @possible_crtcs: bitmask of possible CRTCs
1210 * @funcs: callbacks for the new plane
1211 * @formats: array of supported formats (%DRM_FORMAT_*)
1212 * @format_count: number of elements in @formats
1213 * @is_primary: plane type (primary vs overlay)
1215 * Legacy API to initialize a DRM plane.
1217 * New drivers should call drm_universal_plane_init() instead.
1220 * Zero on success, error code on failure.
1222 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1223 unsigned long possible_crtcs,
1224 const struct drm_plane_funcs *funcs,
1225 const uint32_t *formats, uint32_t format_count,
1228 enum drm_plane_type type;
1230 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1231 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1232 formats, format_count, type);
1234 EXPORT_SYMBOL(drm_plane_init);
1237 * drm_plane_cleanup - Clean up the core plane usage
1238 * @plane: plane to cleanup
1240 * This function cleans up @plane and removes it from the DRM mode setting
1241 * core. Note that the function does *not* free the plane structure itself,
1242 * this is the responsibility of the caller.
1244 void drm_plane_cleanup(struct drm_plane *plane)
1246 struct drm_device *dev = plane->dev;
1248 drm_modeset_lock_all(dev);
1249 kfree(plane->format_types);
1250 drm_mode_object_put(dev, &plane->base);
1252 BUG_ON(list_empty(&plane->head));
1254 list_del(&plane->head);
1255 dev->mode_config.num_total_plane--;
1256 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1257 dev->mode_config.num_overlay_plane--;
1258 drm_modeset_unlock_all(dev);
1260 EXPORT_SYMBOL(drm_plane_cleanup);
1263 * drm_plane_force_disable - Forcibly disable a plane
1264 * @plane: plane to disable
1266 * Forces the plane to be disabled.
1268 * Used when the plane's current framebuffer is destroyed,
1269 * and when restoring fbdev mode.
1271 void drm_plane_force_disable(struct drm_plane *plane)
1273 struct drm_framebuffer *old_fb = plane->fb;
1279 ret = plane->funcs->disable_plane(plane);
1281 DRM_ERROR("failed to disable plane with busy fb\n");
1284 /* disconnect the plane from the fb and crtc: */
1285 __drm_framebuffer_unreference(old_fb);
1289 EXPORT_SYMBOL(drm_plane_force_disable);
1291 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
1293 struct drm_property *edid;
1294 struct drm_property *dpms;
1295 struct drm_property *dev_path;
1298 * Standard properties (apply to all connectors)
1300 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1301 DRM_MODE_PROP_IMMUTABLE,
1303 dev->mode_config.edid_property = edid;
1305 dpms = drm_property_create_enum(dev, 0,
1306 "DPMS", drm_dpms_enum_list,
1307 ARRAY_SIZE(drm_dpms_enum_list));
1308 dev->mode_config.dpms_property = dpms;
1310 dev_path = drm_property_create(dev,
1311 DRM_MODE_PROP_BLOB |
1312 DRM_MODE_PROP_IMMUTABLE,
1314 dev->mode_config.path_property = dev_path;
1319 static int drm_mode_create_standard_plane_properties(struct drm_device *dev)
1321 struct drm_property *type;
1324 * Standard properties (apply to all planes)
1326 type = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1327 "type", drm_plane_type_enum_list,
1328 ARRAY_SIZE(drm_plane_type_enum_list));
1329 dev->mode_config.plane_type_property = type;
1335 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1338 * Called by a driver the first time a DVI-I connector is made.
1340 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1342 struct drm_property *dvi_i_selector;
1343 struct drm_property *dvi_i_subconnector;
1345 if (dev->mode_config.dvi_i_select_subconnector_property)
1349 drm_property_create_enum(dev, 0,
1350 "select subconnector",
1351 drm_dvi_i_select_enum_list,
1352 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1353 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1355 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1357 drm_dvi_i_subconnector_enum_list,
1358 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1359 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1363 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1366 * drm_create_tv_properties - create TV specific connector properties
1368 * @num_modes: number of different TV formats (modes) supported
1369 * @modes: array of pointers to strings containing name of each format
1371 * Called by a driver's TV initialization routine, this function creates
1372 * the TV specific connector properties for a given device. Caller is
1373 * responsible for allocating a list of format names and passing them to
1376 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
1379 struct drm_property *tv_selector;
1380 struct drm_property *tv_subconnector;
1383 if (dev->mode_config.tv_select_subconnector_property)
1387 * Basic connector properties
1389 tv_selector = drm_property_create_enum(dev, 0,
1390 "select subconnector",
1391 drm_tv_select_enum_list,
1392 ARRAY_SIZE(drm_tv_select_enum_list));
1393 dev->mode_config.tv_select_subconnector_property = tv_selector;
1396 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1398 drm_tv_subconnector_enum_list,
1399 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1400 dev->mode_config.tv_subconnector_property = tv_subconnector;
1403 * Other, TV specific properties: margins & TV modes.
1405 dev->mode_config.tv_left_margin_property =
1406 drm_property_create_range(dev, 0, "left margin", 0, 100);
1408 dev->mode_config.tv_right_margin_property =
1409 drm_property_create_range(dev, 0, "right margin", 0, 100);
1411 dev->mode_config.tv_top_margin_property =
1412 drm_property_create_range(dev, 0, "top margin", 0, 100);
1414 dev->mode_config.tv_bottom_margin_property =
1415 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1417 dev->mode_config.tv_mode_property =
1418 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1420 for (i = 0; i < num_modes; i++)
1421 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1424 dev->mode_config.tv_brightness_property =
1425 drm_property_create_range(dev, 0, "brightness", 0, 100);
1427 dev->mode_config.tv_contrast_property =
1428 drm_property_create_range(dev, 0, "contrast", 0, 100);
1430 dev->mode_config.tv_flicker_reduction_property =
1431 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1433 dev->mode_config.tv_overscan_property =
1434 drm_property_create_range(dev, 0, "overscan", 0, 100);
1436 dev->mode_config.tv_saturation_property =
1437 drm_property_create_range(dev, 0, "saturation", 0, 100);
1439 dev->mode_config.tv_hue_property =
1440 drm_property_create_range(dev, 0, "hue", 0, 100);
1444 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1447 * drm_mode_create_scaling_mode_property - create scaling mode property
1450 * Called by a driver the first time it's needed, must be attached to desired
1453 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1455 struct drm_property *scaling_mode;
1457 if (dev->mode_config.scaling_mode_property)
1461 drm_property_create_enum(dev, 0, "scaling mode",
1462 drm_scaling_mode_enum_list,
1463 ARRAY_SIZE(drm_scaling_mode_enum_list));
1465 dev->mode_config.scaling_mode_property = scaling_mode;
1469 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1472 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1475 * Called by a driver the first time it's needed, must be attached to desired
1479 * Zero on success, errno on failure.
1481 int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1483 if (dev->mode_config.aspect_ratio_property)
1486 dev->mode_config.aspect_ratio_property =
1487 drm_property_create_enum(dev, 0, "aspect ratio",
1488 drm_aspect_ratio_enum_list,
1489 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1491 if (dev->mode_config.aspect_ratio_property == NULL)
1496 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1499 * drm_mode_create_dirty_property - create dirty property
1502 * Called by a driver the first time it's needed, must be attached to desired
1505 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1507 struct drm_property *dirty_info;
1509 if (dev->mode_config.dirty_info_property)
1513 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1515 drm_dirty_info_enum_list,
1516 ARRAY_SIZE(drm_dirty_info_enum_list));
1517 dev->mode_config.dirty_info_property = dirty_info;
1521 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1523 static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
1525 uint32_t total_objects = 0;
1527 total_objects += dev->mode_config.num_crtc;
1528 total_objects += dev->mode_config.num_connector;
1529 total_objects += dev->mode_config.num_encoder;
1530 total_objects += dev->mode_config.num_bridge;
1532 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
1533 if (!group->id_list)
1536 group->num_crtcs = 0;
1537 group->num_connectors = 0;
1538 group->num_encoders = 0;
1539 group->num_bridges = 0;
1543 void drm_mode_group_destroy(struct drm_mode_group *group)
1545 kfree(group->id_list);
1546 group->id_list = NULL;
1550 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1551 * the drm core's responsibility to set up mode control groups.
1553 int drm_mode_group_init_legacy_group(struct drm_device *dev,
1554 struct drm_mode_group *group)
1556 struct drm_crtc *crtc;
1557 struct drm_encoder *encoder;
1558 struct drm_connector *connector;
1559 struct drm_bridge *bridge;
1562 if ((ret = drm_mode_group_init(dev, group)))
1565 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1566 group->id_list[group->num_crtcs++] = crtc->base.id;
1568 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1569 group->id_list[group->num_crtcs + group->num_encoders++] =
1572 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1573 group->id_list[group->num_crtcs + group->num_encoders +
1574 group->num_connectors++] = connector->base.id;
1576 list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
1577 group->id_list[group->num_crtcs + group->num_encoders +
1578 group->num_connectors + group->num_bridges++] =
1583 EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
1585 void drm_reinit_primary_mode_group(struct drm_device *dev)
1587 drm_modeset_lock_all(dev);
1588 drm_mode_group_destroy(&dev->primary->mode_group);
1589 drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
1590 drm_modeset_unlock_all(dev);
1592 EXPORT_SYMBOL(drm_reinit_primary_mode_group);
1595 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1596 * @out: drm_mode_modeinfo struct to return to the user
1597 * @in: drm_display_mode to use
1599 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1602 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1603 const struct drm_display_mode *in)
1605 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1606 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1607 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1608 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1609 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1610 "timing values too large for mode info\n");
1612 out->clock = in->clock;
1613 out->hdisplay = in->hdisplay;
1614 out->hsync_start = in->hsync_start;
1615 out->hsync_end = in->hsync_end;
1616 out->htotal = in->htotal;
1617 out->hskew = in->hskew;
1618 out->vdisplay = in->vdisplay;
1619 out->vsync_start = in->vsync_start;
1620 out->vsync_end = in->vsync_end;
1621 out->vtotal = in->vtotal;
1622 out->vscan = in->vscan;
1623 out->vrefresh = in->vrefresh;
1624 out->flags = in->flags;
1625 out->type = in->type;
1626 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1627 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1631 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1632 * @out: drm_display_mode to return to the user
1633 * @in: drm_mode_modeinfo to use
1635 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1639 * Zero on success, errno on failure.
1641 static int drm_crtc_convert_umode(struct drm_display_mode *out,
1642 const struct drm_mode_modeinfo *in)
1644 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1647 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1650 out->clock = in->clock;
1651 out->hdisplay = in->hdisplay;
1652 out->hsync_start = in->hsync_start;
1653 out->hsync_end = in->hsync_end;
1654 out->htotal = in->htotal;
1655 out->hskew = in->hskew;
1656 out->vdisplay = in->vdisplay;
1657 out->vsync_start = in->vsync_start;
1658 out->vsync_end = in->vsync_end;
1659 out->vtotal = in->vtotal;
1660 out->vscan = in->vscan;
1661 out->vrefresh = in->vrefresh;
1662 out->flags = in->flags;
1663 out->type = in->type;
1664 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1665 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1671 * drm_mode_getresources - get graphics configuration
1672 * @dev: drm device for the ioctl
1673 * @data: data pointer for the ioctl
1674 * @file_priv: drm file for the ioctl call
1676 * Construct a set of configuration description structures and return
1677 * them to the user, including CRTC, connector and framebuffer configuration.
1679 * Called by the user via ioctl.
1682 * Zero on success, errno on failure.
1684 int drm_mode_getresources(struct drm_device *dev, void *data,
1685 struct drm_file *file_priv)
1687 struct drm_mode_card_res *card_res = data;
1688 struct list_head *lh;
1689 struct drm_framebuffer *fb;
1690 struct drm_connector *connector;
1691 struct drm_crtc *crtc;
1692 struct drm_encoder *encoder;
1694 int connector_count = 0;
1697 int encoder_count = 0;
1699 uint32_t __user *fb_id;
1700 uint32_t __user *crtc_id;
1701 uint32_t __user *connector_id;
1702 uint32_t __user *encoder_id;
1703 struct drm_mode_group *mode_group;
1705 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1709 mutex_lock(&file_priv->fbs_lock);
1711 * For the non-control nodes we need to limit the list of resources
1712 * by IDs in the group list for this node
1714 list_for_each(lh, &file_priv->fbs)
1717 /* handle this in 4 parts */
1719 if (card_res->count_fbs >= fb_count) {
1721 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1722 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1723 if (put_user(fb->base.id, fb_id + copied)) {
1724 mutex_unlock(&file_priv->fbs_lock);
1730 card_res->count_fbs = fb_count;
1731 mutex_unlock(&file_priv->fbs_lock);
1733 drm_modeset_lock_all(dev);
1734 if (!drm_is_primary_client(file_priv)) {
1737 list_for_each(lh, &dev->mode_config.crtc_list)
1740 list_for_each(lh, &dev->mode_config.connector_list)
1743 list_for_each(lh, &dev->mode_config.encoder_list)
1747 mode_group = &file_priv->master->minor->mode_group;
1748 crtc_count = mode_group->num_crtcs;
1749 connector_count = mode_group->num_connectors;
1750 encoder_count = mode_group->num_encoders;
1753 card_res->max_height = dev->mode_config.max_height;
1754 card_res->min_height = dev->mode_config.min_height;
1755 card_res->max_width = dev->mode_config.max_width;
1756 card_res->min_width = dev->mode_config.min_width;
1759 if (card_res->count_crtcs >= crtc_count) {
1761 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1763 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1765 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1766 if (put_user(crtc->base.id, crtc_id + copied)) {
1773 for (i = 0; i < mode_group->num_crtcs; i++) {
1774 if (put_user(mode_group->id_list[i],
1775 crtc_id + copied)) {
1783 card_res->count_crtcs = crtc_count;
1786 if (card_res->count_encoders >= encoder_count) {
1788 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1790 list_for_each_entry(encoder,
1791 &dev->mode_config.encoder_list,
1793 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1795 if (put_user(encoder->base.id, encoder_id +
1803 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1804 if (put_user(mode_group->id_list[i],
1805 encoder_id + copied)) {
1814 card_res->count_encoders = encoder_count;
1817 if (card_res->count_connectors >= connector_count) {
1819 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1821 list_for_each_entry(connector,
1822 &dev->mode_config.connector_list,
1824 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1827 if (put_user(connector->base.id,
1828 connector_id + copied)) {
1835 int start = mode_group->num_crtcs +
1836 mode_group->num_encoders;
1837 for (i = start; i < start + mode_group->num_connectors; i++) {
1838 if (put_user(mode_group->id_list[i],
1839 connector_id + copied)) {
1847 card_res->count_connectors = connector_count;
1849 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1850 card_res->count_connectors, card_res->count_encoders);
1853 drm_modeset_unlock_all(dev);
1858 * drm_mode_getcrtc - get CRTC configuration
1859 * @dev: drm device for the ioctl
1860 * @data: data pointer for the ioctl
1861 * @file_priv: drm file for the ioctl call
1863 * Construct a CRTC configuration structure to return to the user.
1865 * Called by the user via ioctl.
1868 * Zero on success, errno on failure.
1870 int drm_mode_getcrtc(struct drm_device *dev,
1871 void *data, struct drm_file *file_priv)
1873 struct drm_mode_crtc *crtc_resp = data;
1874 struct drm_crtc *crtc;
1877 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1880 drm_modeset_lock_all(dev);
1882 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
1888 crtc_resp->x = crtc->x;
1889 crtc_resp->y = crtc->y;
1890 crtc_resp->gamma_size = crtc->gamma_size;
1891 if (crtc->primary->fb)
1892 crtc_resp->fb_id = crtc->primary->fb->base.id;
1894 crtc_resp->fb_id = 0;
1896 if (crtc->enabled) {
1898 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1899 crtc_resp->mode_valid = 1;
1902 crtc_resp->mode_valid = 0;
1906 drm_modeset_unlock_all(dev);
1910 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1911 const struct drm_file *file_priv)
1914 * If user-space hasn't configured the driver to expose the stereo 3D
1915 * modes, don't expose them.
1917 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1924 * drm_mode_getconnector - get connector configuration
1925 * @dev: drm device for the ioctl
1926 * @data: data pointer for the ioctl
1927 * @file_priv: drm file for the ioctl call
1929 * Construct a connector configuration structure to return to the user.
1931 * Called by the user via ioctl.
1934 * Zero on success, errno on failure.
1936 int drm_mode_getconnector(struct drm_device *dev, void *data,
1937 struct drm_file *file_priv)
1939 struct drm_mode_get_connector *out_resp = data;
1940 struct drm_connector *connector;
1941 struct drm_display_mode *mode;
1943 int props_count = 0;
1944 int encoders_count = 0;
1948 struct drm_mode_modeinfo u_mode;
1949 struct drm_mode_modeinfo __user *mode_ptr;
1950 uint32_t __user *prop_ptr;
1951 uint64_t __user *prop_values;
1952 uint32_t __user *encoder_ptr;
1954 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1957 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1959 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1961 mutex_lock(&dev->mode_config.mutex);
1963 connector = drm_connector_find(dev, out_resp->connector_id);
1969 props_count = connector->properties.count;
1971 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1972 if (connector->encoder_ids[i] != 0) {
1977 if (out_resp->count_modes == 0) {
1978 connector->funcs->fill_modes(connector,
1979 dev->mode_config.max_width,
1980 dev->mode_config.max_height);
1983 /* delayed so we get modes regardless of pre-fill_modes state */
1984 list_for_each_entry(mode, &connector->modes, head)
1985 if (drm_mode_expose_to_userspace(mode, file_priv))
1988 out_resp->connector_id = connector->base.id;
1989 out_resp->connector_type = connector->connector_type;
1990 out_resp->connector_type_id = connector->connector_type_id;
1991 out_resp->mm_width = connector->display_info.width_mm;
1992 out_resp->mm_height = connector->display_info.height_mm;
1993 out_resp->subpixel = connector->display_info.subpixel_order;
1994 out_resp->connection = connector->status;
1995 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
1996 if (connector->encoder)
1997 out_resp->encoder_id = connector->encoder->base.id;
1999 out_resp->encoder_id = 0;
2000 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2003 * This ioctl is called twice, once to determine how much space is
2004 * needed, and the 2nd time to fill it.
2006 if ((out_resp->count_modes >= mode_count) && mode_count) {
2008 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
2009 list_for_each_entry(mode, &connector->modes, head) {
2010 if (!drm_mode_expose_to_userspace(mode, file_priv))
2013 drm_crtc_convert_to_umode(&u_mode, mode);
2014 if (copy_to_user(mode_ptr + copied,
2015 &u_mode, sizeof(u_mode))) {
2022 out_resp->count_modes = mode_count;
2024 if ((out_resp->count_props >= props_count) && props_count) {
2026 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
2027 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
2028 for (i = 0; i < connector->properties.count; i++) {
2029 if (put_user(connector->properties.ids[i],
2030 prop_ptr + copied)) {
2035 if (put_user(connector->properties.values[i],
2036 prop_values + copied)) {
2043 out_resp->count_props = props_count;
2045 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2047 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
2048 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2049 if (connector->encoder_ids[i] != 0) {
2050 if (put_user(connector->encoder_ids[i],
2051 encoder_ptr + copied)) {
2059 out_resp->count_encoders = encoders_count;
2062 mutex_unlock(&dev->mode_config.mutex);
2068 * drm_mode_getencoder - get encoder configuration
2069 * @dev: drm device for the ioctl
2070 * @data: data pointer for the ioctl
2071 * @file_priv: drm file for the ioctl call
2073 * Construct a encoder configuration structure to return to the user.
2075 * Called by the user via ioctl.
2078 * Zero on success, errno on failure.
2080 int drm_mode_getencoder(struct drm_device *dev, void *data,
2081 struct drm_file *file_priv)
2083 struct drm_mode_get_encoder *enc_resp = data;
2084 struct drm_encoder *encoder;
2087 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2090 drm_modeset_lock_all(dev);
2091 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
2098 enc_resp->crtc_id = encoder->crtc->base.id;
2100 enc_resp->crtc_id = 0;
2101 enc_resp->encoder_type = encoder->encoder_type;
2102 enc_resp->encoder_id = encoder->base.id;
2103 enc_resp->possible_crtcs = encoder->possible_crtcs;
2104 enc_resp->possible_clones = encoder->possible_clones;
2107 drm_modeset_unlock_all(dev);
2112 * drm_mode_getplane_res - enumerate all plane resources
2115 * @file_priv: DRM file info
2117 * Construct a list of plane ids to return to the user.
2119 * Called by the user via ioctl.
2122 * Zero on success, errno on failure.
2124 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2125 struct drm_file *file_priv)
2127 struct drm_mode_get_plane_res *plane_resp = data;
2128 struct drm_mode_config *config;
2129 struct drm_plane *plane;
2130 uint32_t __user *plane_ptr;
2131 int copied = 0, ret = 0;
2132 unsigned num_planes;
2134 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2137 drm_modeset_lock_all(dev);
2138 config = &dev->mode_config;
2140 if (file_priv->universal_planes)
2141 num_planes = config->num_total_plane;
2143 num_planes = config->num_overlay_plane;
2146 * This ioctl is called twice, once to determine how much space is
2147 * needed, and the 2nd time to fill it.
2150 (plane_resp->count_planes >= num_planes)) {
2151 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2153 list_for_each_entry(plane, &config->plane_list, head) {
2155 * Unless userspace set the 'universal planes'
2156 * capability bit, only advertise overlays.
2158 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2159 !file_priv->universal_planes)
2162 if (put_user(plane->base.id, plane_ptr + copied)) {
2169 plane_resp->count_planes = num_planes;
2172 drm_modeset_unlock_all(dev);
2177 * drm_mode_getplane - get plane configuration
2180 * @file_priv: DRM file info
2182 * Construct a plane configuration structure to return to the user.
2184 * Called by the user via ioctl.
2187 * Zero on success, errno on failure.
2189 int drm_mode_getplane(struct drm_device *dev, void *data,
2190 struct drm_file *file_priv)
2192 struct drm_mode_get_plane *plane_resp = data;
2193 struct drm_plane *plane;
2194 uint32_t __user *format_ptr;
2197 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2200 drm_modeset_lock_all(dev);
2201 plane = drm_plane_find(dev, plane_resp->plane_id);
2208 plane_resp->crtc_id = plane->crtc->base.id;
2210 plane_resp->crtc_id = 0;
2213 plane_resp->fb_id = plane->fb->base.id;
2215 plane_resp->fb_id = 0;
2217 plane_resp->plane_id = plane->base.id;
2218 plane_resp->possible_crtcs = plane->possible_crtcs;
2219 plane_resp->gamma_size = 0;
2222 * This ioctl is called twice, once to determine how much space is
2223 * needed, and the 2nd time to fill it.
2225 if (plane->format_count &&
2226 (plane_resp->count_format_types >= plane->format_count)) {
2227 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2228 if (copy_to_user(format_ptr,
2229 plane->format_types,
2230 sizeof(uint32_t) * plane->format_count)) {
2235 plane_resp->count_format_types = plane->format_count;
2238 drm_modeset_unlock_all(dev);
2243 * setplane_internal - setplane handler for internal callers
2245 * Note that we assume an extra reference has already been taken on fb. If the
2246 * update fails, this reference will be dropped before return; if it succeeds,
2247 * the previous framebuffer (if any) will be unreferenced instead.
2249 * src_{x,y,w,h} are provided in 16.16 fixed point format
2251 static int setplane_internal(struct drm_plane *plane,
2252 struct drm_crtc *crtc,
2253 struct drm_framebuffer *fb,
2254 int32_t crtc_x, int32_t crtc_y,
2255 uint32_t crtc_w, uint32_t crtc_h,
2256 /* src_{x,y,w,h} values are 16.16 fixed point */
2257 uint32_t src_x, uint32_t src_y,
2258 uint32_t src_w, uint32_t src_h)
2260 struct drm_device *dev = plane->dev;
2261 struct drm_framebuffer *old_fb = NULL;
2263 unsigned int fb_width, fb_height;
2266 /* No fb means shut it down */
2268 drm_modeset_lock_all(dev);
2270 ret = plane->funcs->disable_plane(plane);
2277 drm_modeset_unlock_all(dev);
2281 /* Check whether this plane is usable on this CRTC */
2282 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2283 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2288 /* Check whether this plane supports the fb pixel format. */
2289 for (i = 0; i < plane->format_count; i++)
2290 if (fb->pixel_format == plane->format_types[i])
2292 if (i == plane->format_count) {
2293 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2294 drm_get_format_name(fb->pixel_format));
2299 fb_width = fb->width << 16;
2300 fb_height = fb->height << 16;
2302 /* Make sure source coordinates are inside the fb. */
2303 if (src_w > fb_width ||
2304 src_x > fb_width - src_w ||
2305 src_h > fb_height ||
2306 src_y > fb_height - src_h) {
2307 DRM_DEBUG_KMS("Invalid source coordinates "
2308 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2309 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2310 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2311 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2312 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2317 drm_modeset_lock_all(dev);
2319 ret = plane->funcs->update_plane(plane, crtc, fb,
2320 crtc_x, crtc_y, crtc_w, crtc_h,
2321 src_x, src_y, src_w, src_h);
2329 drm_modeset_unlock_all(dev);
2333 drm_framebuffer_unreference(fb);
2335 drm_framebuffer_unreference(old_fb);
2342 * drm_mode_setplane - configure a plane's configuration
2344 * @data: ioctl data*
2345 * @file_priv: DRM file info
2347 * Set plane configuration, including placement, fb, scaling, and other factors.
2348 * Or pass a NULL fb to disable (planes may be disabled without providing a
2352 * Zero on success, errno on failure.
2354 int drm_mode_setplane(struct drm_device *dev, void *data,
2355 struct drm_file *file_priv)
2357 struct drm_mode_set_plane *plane_req = data;
2358 struct drm_mode_object *obj;
2359 struct drm_plane *plane;
2360 struct drm_crtc *crtc = NULL;
2361 struct drm_framebuffer *fb = NULL;
2363 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2366 /* Give drivers some help against integer overflows */
2367 if (plane_req->crtc_w > INT_MAX ||
2368 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2369 plane_req->crtc_h > INT_MAX ||
2370 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2371 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2372 plane_req->crtc_w, plane_req->crtc_h,
2373 plane_req->crtc_x, plane_req->crtc_y);
2378 * First, find the plane, crtc, and fb objects. If not available,
2379 * we don't bother to call the driver.
2381 obj = drm_mode_object_find(dev, plane_req->plane_id,
2382 DRM_MODE_OBJECT_PLANE);
2384 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2385 plane_req->plane_id);
2388 plane = obj_to_plane(obj);
2390 if (plane_req->fb_id) {
2391 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2393 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2398 obj = drm_mode_object_find(dev, plane_req->crtc_id,
2399 DRM_MODE_OBJECT_CRTC);
2401 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2402 plane_req->crtc_id);
2405 crtc = obj_to_crtc(obj);
2409 * setplane_internal will take care of deref'ing either the old or new
2410 * framebuffer depending on success.
2412 return setplane_internal(plane, crtc, fb,
2413 plane_req->crtc_x, plane_req->crtc_y,
2414 plane_req->crtc_w, plane_req->crtc_h,
2415 plane_req->src_x, plane_req->src_y,
2416 plane_req->src_w, plane_req->src_h);
2420 * drm_mode_set_config_internal - helper to call ->set_config
2421 * @set: modeset config to set
2423 * This is a little helper to wrap internal calls to the ->set_config driver
2424 * interface. The only thing it adds is correct refcounting dance.
2427 * Zero on success, errno on failure.
2429 int drm_mode_set_config_internal(struct drm_mode_set *set)
2431 struct drm_crtc *crtc = set->crtc;
2432 struct drm_framebuffer *fb;
2433 struct drm_crtc *tmp;
2437 * NOTE: ->set_config can also disable other crtcs (if we steal all
2438 * connectors from it), hence we need to refcount the fbs across all
2439 * crtcs. Atomic modeset will have saner semantics ...
2441 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
2442 tmp->old_fb = tmp->primary->fb;
2446 ret = crtc->funcs->set_config(set);
2448 crtc->primary->crtc = crtc;
2449 crtc->primary->fb = fb;
2452 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
2453 if (tmp->primary->fb)
2454 drm_framebuffer_reference(tmp->primary->fb);
2456 drm_framebuffer_unreference(tmp->old_fb);
2461 EXPORT_SYMBOL(drm_mode_set_config_internal);
2464 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2466 * @crtc: CRTC that framebuffer will be displayed on
2469 * @mode: mode that framebuffer will be displayed under
2470 * @fb: framebuffer to check size of
2472 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2474 const struct drm_display_mode *mode,
2475 const struct drm_framebuffer *fb)
2478 int hdisplay, vdisplay;
2480 hdisplay = mode->hdisplay;
2481 vdisplay = mode->vdisplay;
2483 if (drm_mode_is_stereo(mode)) {
2484 struct drm_display_mode adjusted = *mode;
2486 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE);
2487 hdisplay = adjusted.crtc_hdisplay;
2488 vdisplay = adjusted.crtc_vdisplay;
2491 if (crtc->invert_dimensions)
2492 swap(hdisplay, vdisplay);
2494 if (hdisplay > fb->width ||
2495 vdisplay > fb->height ||
2496 x > fb->width - hdisplay ||
2497 y > fb->height - vdisplay) {
2498 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2499 fb->width, fb->height, hdisplay, vdisplay, x, y,
2500 crtc->invert_dimensions ? " (inverted)" : "");
2506 EXPORT_SYMBOL(drm_crtc_check_viewport);
2509 * drm_mode_setcrtc - set CRTC configuration
2510 * @dev: drm device for the ioctl
2511 * @data: data pointer for the ioctl
2512 * @file_priv: drm file for the ioctl call
2514 * Build a new CRTC configuration based on user request.
2516 * Called by the user via ioctl.
2519 * Zero on success, errno on failure.
2521 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2522 struct drm_file *file_priv)
2524 struct drm_mode_config *config = &dev->mode_config;
2525 struct drm_mode_crtc *crtc_req = data;
2526 struct drm_crtc *crtc;
2527 struct drm_connector **connector_set = NULL, *connector;
2528 struct drm_framebuffer *fb = NULL;
2529 struct drm_display_mode *mode = NULL;
2530 struct drm_mode_set set;
2531 uint32_t __user *set_connectors_ptr;
2535 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2538 /* For some reason crtc x/y offsets are signed internally. */
2539 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2542 drm_modeset_lock_all(dev);
2543 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2545 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2549 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2551 if (crtc_req->mode_valid) {
2552 /* If we have a mode we need a framebuffer. */
2553 /* If we pass -1, set the mode with the currently bound fb */
2554 if (crtc_req->fb_id == -1) {
2555 if (!crtc->primary->fb) {
2556 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2560 fb = crtc->primary->fb;
2561 /* Make refcounting symmetric with the lookup path. */
2562 drm_framebuffer_reference(fb);
2564 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2566 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2573 mode = drm_mode_create(dev);
2579 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2581 DRM_DEBUG_KMS("Invalid mode\n");
2585 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2587 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2594 if (crtc_req->count_connectors == 0 && mode) {
2595 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2600 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2601 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2602 crtc_req->count_connectors);
2607 if (crtc_req->count_connectors > 0) {
2610 /* Avoid unbounded kernel memory allocation */
2611 if (crtc_req->count_connectors > config->num_connector) {
2616 connector_set = kmalloc(crtc_req->count_connectors *
2617 sizeof(struct drm_connector *),
2619 if (!connector_set) {
2624 for (i = 0; i < crtc_req->count_connectors; i++) {
2625 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2626 if (get_user(out_id, &set_connectors_ptr[i])) {
2631 connector = drm_connector_find(dev, out_id);
2633 DRM_DEBUG_KMS("Connector id %d unknown\n",
2638 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2642 connector_set[i] = connector;
2647 set.x = crtc_req->x;
2648 set.y = crtc_req->y;
2650 set.connectors = connector_set;
2651 set.num_connectors = crtc_req->count_connectors;
2653 ret = drm_mode_set_config_internal(&set);
2657 drm_framebuffer_unreference(fb);
2659 kfree(connector_set);
2660 drm_mode_destroy(dev, mode);
2661 drm_modeset_unlock_all(dev);
2666 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2667 * universal plane handler call
2668 * @crtc: crtc to update cursor for
2669 * @req: data pointer for the ioctl
2670 * @file_priv: drm file for the ioctl call
2672 * Legacy cursor ioctl's work directly with driver buffer handles. To
2673 * translate legacy ioctl calls into universal plane handler calls, we need to
2674 * wrap the native buffer handle in a drm_framebuffer.
2676 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2677 * buffer with a pitch of 4*width; the universal plane interface should be used
2678 * directly in cases where the hardware can support other buffer settings and
2679 * userspace wants to make use of these capabilities.
2682 * Zero on success, errno on failure.
2684 static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2685 struct drm_mode_cursor2 *req,
2686 struct drm_file *file_priv)
2688 struct drm_device *dev = crtc->dev;
2689 struct drm_framebuffer *fb = NULL;
2690 struct drm_mode_fb_cmd2 fbreq = {
2691 .width = req->width,
2692 .height = req->height,
2693 .pixel_format = DRM_FORMAT_ARGB8888,
2694 .pitches = { req->width * 4 },
2695 .handles = { req->handle },
2697 int32_t crtc_x, crtc_y;
2698 uint32_t crtc_w = 0, crtc_h = 0;
2699 uint32_t src_w = 0, src_h = 0;
2702 BUG_ON(!crtc->cursor);
2705 * Obtain fb we'll be using (either new or existing) and take an extra
2706 * reference to it if fb != null. setplane will take care of dropping
2707 * the reference if the plane update fails.
2709 if (req->flags & DRM_MODE_CURSOR_BO) {
2711 fb = add_framebuffer_internal(dev, &fbreq, file_priv);
2713 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2717 drm_framebuffer_reference(fb);
2722 mutex_lock(&dev->mode_config.mutex);
2723 fb = crtc->cursor->fb;
2725 drm_framebuffer_reference(fb);
2726 mutex_unlock(&dev->mode_config.mutex);
2729 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2733 crtc_x = crtc->cursor_x;
2734 crtc_y = crtc->cursor_y;
2739 crtc_h = fb->height;
2740 src_w = fb->width << 16;
2741 src_h = fb->height << 16;
2745 * setplane_internal will take care of deref'ing either the old or new
2746 * framebuffer depending on success.
2748 ret = setplane_internal(crtc->cursor, crtc, fb,
2749 crtc_x, crtc_y, crtc_w, crtc_h,
2750 0, 0, src_w, src_h);
2752 /* Update successful; save new cursor position, if necessary */
2753 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2754 crtc->cursor_x = req->x;
2755 crtc->cursor_y = req->y;
2761 static int drm_mode_cursor_common(struct drm_device *dev,
2762 struct drm_mode_cursor2 *req,
2763 struct drm_file *file_priv)
2765 struct drm_crtc *crtc;
2768 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2771 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2774 crtc = drm_crtc_find(dev, req->crtc_id);
2776 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2781 * If this crtc has a universal cursor plane, call that plane's update
2782 * handler rather than using legacy cursor handlers.
2785 return drm_mode_cursor_universal(crtc, req, file_priv);
2787 drm_modeset_lock(&crtc->mutex, NULL);
2788 if (req->flags & DRM_MODE_CURSOR_BO) {
2789 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
2793 /* Turns off the cursor if handle is 0 */
2794 if (crtc->funcs->cursor_set2)
2795 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2796 req->width, req->height, req->hot_x, req->hot_y);
2798 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2799 req->width, req->height);
2802 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2803 if (crtc->funcs->cursor_move) {
2804 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2811 drm_modeset_unlock(&crtc->mutex);
2819 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2820 * @dev: drm device for the ioctl
2821 * @data: data pointer for the ioctl
2822 * @file_priv: drm file for the ioctl call
2824 * Set the cursor configuration based on user request.
2826 * Called by the user via ioctl.
2829 * Zero on success, errno on failure.
2831 int drm_mode_cursor_ioctl(struct drm_device *dev,
2832 void *data, struct drm_file *file_priv)
2834 struct drm_mode_cursor *req = data;
2835 struct drm_mode_cursor2 new_req;
2837 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2838 new_req.hot_x = new_req.hot_y = 0;
2840 return drm_mode_cursor_common(dev, &new_req, file_priv);
2844 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2845 * @dev: drm device for the ioctl
2846 * @data: data pointer for the ioctl
2847 * @file_priv: drm file for the ioctl call
2849 * Set the cursor configuration based on user request. This implements the 2nd
2850 * version of the cursor ioctl, which allows userspace to additionally specify
2851 * the hotspot of the pointer.
2853 * Called by the user via ioctl.
2856 * Zero on success, errno on failure.
2858 int drm_mode_cursor2_ioctl(struct drm_device *dev,
2859 void *data, struct drm_file *file_priv)
2861 struct drm_mode_cursor2 *req = data;
2862 return drm_mode_cursor_common(dev, req, file_priv);
2866 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2867 * @bpp: bits per pixels
2868 * @depth: bit depth per pixel
2870 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2871 * Useful in fbdev emulation code, since that deals in those values.
2873 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2879 fmt = DRM_FORMAT_C8;
2883 fmt = DRM_FORMAT_XRGB1555;
2885 fmt = DRM_FORMAT_RGB565;
2888 fmt = DRM_FORMAT_RGB888;
2892 fmt = DRM_FORMAT_XRGB8888;
2893 else if (depth == 30)
2894 fmt = DRM_FORMAT_XRGB2101010;
2896 fmt = DRM_FORMAT_ARGB8888;
2899 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2900 fmt = DRM_FORMAT_XRGB8888;
2906 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
2909 * drm_mode_addfb - add an FB to the graphics configuration
2910 * @dev: drm device for the ioctl
2911 * @data: data pointer for the ioctl
2912 * @file_priv: drm file for the ioctl call
2914 * Add a new FB to the specified CRTC, given a user request. This is the
2915 * original addfb ioclt which only supported RGB formats.
2917 * Called by the user via ioctl.
2920 * Zero on success, errno on failure.
2922 int drm_mode_addfb(struct drm_device *dev,
2923 void *data, struct drm_file *file_priv)
2925 struct drm_mode_fb_cmd *or = data;
2926 struct drm_mode_fb_cmd2 r = {};
2927 struct drm_mode_config *config = &dev->mode_config;
2928 struct drm_framebuffer *fb;
2931 /* Use new struct with format internally */
2932 r.fb_id = or->fb_id;
2933 r.width = or->width;
2934 r.height = or->height;
2935 r.pitches[0] = or->pitch;
2936 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
2937 r.handles[0] = or->handle;
2939 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2942 if ((config->min_width > r.width) || (r.width > config->max_width))
2945 if ((config->min_height > r.height) || (r.height > config->max_height))
2948 fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r);
2950 DRM_DEBUG_KMS("could not create framebuffer\n");
2954 mutex_lock(&file_priv->fbs_lock);
2955 or->fb_id = fb->base.id;
2956 list_add(&fb->filp_head, &file_priv->fbs);
2957 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2958 mutex_unlock(&file_priv->fbs_lock);
2963 static int format_check(const struct drm_mode_fb_cmd2 *r)
2965 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
2969 case DRM_FORMAT_RGB332:
2970 case DRM_FORMAT_BGR233:
2971 case DRM_FORMAT_XRGB4444:
2972 case DRM_FORMAT_XBGR4444:
2973 case DRM_FORMAT_RGBX4444:
2974 case DRM_FORMAT_BGRX4444:
2975 case DRM_FORMAT_ARGB4444:
2976 case DRM_FORMAT_ABGR4444:
2977 case DRM_FORMAT_RGBA4444:
2978 case DRM_FORMAT_BGRA4444:
2979 case DRM_FORMAT_XRGB1555:
2980 case DRM_FORMAT_XBGR1555:
2981 case DRM_FORMAT_RGBX5551:
2982 case DRM_FORMAT_BGRX5551:
2983 case DRM_FORMAT_ARGB1555:
2984 case DRM_FORMAT_ABGR1555:
2985 case DRM_FORMAT_RGBA5551:
2986 case DRM_FORMAT_BGRA5551:
2987 case DRM_FORMAT_RGB565:
2988 case DRM_FORMAT_BGR565:
2989 case DRM_FORMAT_RGB888:
2990 case DRM_FORMAT_BGR888:
2991 case DRM_FORMAT_XRGB8888:
2992 case DRM_FORMAT_XBGR8888:
2993 case DRM_FORMAT_RGBX8888:
2994 case DRM_FORMAT_BGRX8888:
2995 case DRM_FORMAT_ARGB8888:
2996 case DRM_FORMAT_ABGR8888:
2997 case DRM_FORMAT_RGBA8888:
2998 case DRM_FORMAT_BGRA8888:
2999 case DRM_FORMAT_XRGB2101010:
3000 case DRM_FORMAT_XBGR2101010:
3001 case DRM_FORMAT_RGBX1010102:
3002 case DRM_FORMAT_BGRX1010102:
3003 case DRM_FORMAT_ARGB2101010:
3004 case DRM_FORMAT_ABGR2101010:
3005 case DRM_FORMAT_RGBA1010102:
3006 case DRM_FORMAT_BGRA1010102:
3007 case DRM_FORMAT_YUYV:
3008 case DRM_FORMAT_YVYU:
3009 case DRM_FORMAT_UYVY:
3010 case DRM_FORMAT_VYUY:
3011 case DRM_FORMAT_AYUV:
3012 case DRM_FORMAT_NV12:
3013 case DRM_FORMAT_NV21:
3014 case DRM_FORMAT_NV16:
3015 case DRM_FORMAT_NV61:
3016 case DRM_FORMAT_NV24:
3017 case DRM_FORMAT_NV42:
3018 case DRM_FORMAT_YUV410:
3019 case DRM_FORMAT_YVU410:
3020 case DRM_FORMAT_YUV411:
3021 case DRM_FORMAT_YVU411:
3022 case DRM_FORMAT_YUV420:
3023 case DRM_FORMAT_YVU420:
3024 case DRM_FORMAT_YUV422:
3025 case DRM_FORMAT_YVU422:
3026 case DRM_FORMAT_YUV444:
3027 case DRM_FORMAT_YVU444:
3030 DRM_DEBUG_KMS("invalid pixel format %s\n",
3031 drm_get_format_name(r->pixel_format));
3036 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
3038 int ret, hsub, vsub, num_planes, i;
3040 ret = format_check(r);
3042 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3043 drm_get_format_name(r->pixel_format));
3047 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3048 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3049 num_planes = drm_format_num_planes(r->pixel_format);
3051 if (r->width == 0 || r->width % hsub) {
3052 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->height);
3056 if (r->height == 0 || r->height % vsub) {
3057 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
3061 for (i = 0; i < num_planes; i++) {
3062 unsigned int width = r->width / (i != 0 ? hsub : 1);
3063 unsigned int height = r->height / (i != 0 ? vsub : 1);
3064 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
3066 if (!r->handles[i]) {
3067 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
3071 if ((uint64_t) width * cpp > UINT_MAX)
3074 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3077 if (r->pitches[i] < width * cpp) {
3078 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
3086 static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
3087 struct drm_mode_fb_cmd2 *r,
3088 struct drm_file *file_priv)
3090 struct drm_mode_config *config = &dev->mode_config;
3091 struct drm_framebuffer *fb;
3094 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
3095 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
3096 return ERR_PTR(-EINVAL);
3099 if ((config->min_width > r->width) || (r->width > config->max_width)) {
3100 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3101 r->width, config->min_width, config->max_width);
3102 return ERR_PTR(-EINVAL);
3104 if ((config->min_height > r->height) || (r->height > config->max_height)) {
3105 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3106 r->height, config->min_height, config->max_height);
3107 return ERR_PTR(-EINVAL);
3110 ret = framebuffer_check(r);
3112 return ERR_PTR(ret);
3114 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
3116 DRM_DEBUG_KMS("could not create framebuffer\n");
3120 mutex_lock(&file_priv->fbs_lock);
3121 r->fb_id = fb->base.id;
3122 list_add(&fb->filp_head, &file_priv->fbs);
3123 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3124 mutex_unlock(&file_priv->fbs_lock);
3130 * drm_mode_addfb2 - add an FB to the graphics configuration
3131 * @dev: drm device for the ioctl
3132 * @data: data pointer for the ioctl
3133 * @file_priv: drm file for the ioctl call
3135 * Add a new FB to the specified CRTC, given a user request with format. This is
3136 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3137 * and uses fourcc codes as pixel format specifiers.
3139 * Called by the user via ioctl.
3142 * Zero on success, errno on failure.
3144 int drm_mode_addfb2(struct drm_device *dev,
3145 void *data, struct drm_file *file_priv)
3147 struct drm_framebuffer *fb;
3149 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3152 fb = add_framebuffer_internal(dev, data, file_priv);
3160 * drm_mode_rmfb - remove an FB from the configuration
3161 * @dev: drm device for the ioctl
3162 * @data: data pointer for the ioctl
3163 * @file_priv: drm file for the ioctl call
3165 * Remove the FB specified by the user.
3167 * Called by the user via ioctl.
3170 * Zero on success, errno on failure.
3172 int drm_mode_rmfb(struct drm_device *dev,
3173 void *data, struct drm_file *file_priv)
3175 struct drm_framebuffer *fb = NULL;
3176 struct drm_framebuffer *fbl = NULL;
3177 uint32_t *id = data;
3180 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3183 mutex_lock(&file_priv->fbs_lock);
3184 mutex_lock(&dev->mode_config.fb_lock);
3185 fb = __drm_framebuffer_lookup(dev, *id);
3189 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3195 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3196 __drm_framebuffer_unregister(dev, fb);
3198 list_del_init(&fb->filp_head);
3199 mutex_unlock(&dev->mode_config.fb_lock);
3200 mutex_unlock(&file_priv->fbs_lock);
3202 drm_framebuffer_remove(fb);
3207 mutex_unlock(&dev->mode_config.fb_lock);
3208 mutex_unlock(&file_priv->fbs_lock);
3214 * drm_mode_getfb - get FB info
3215 * @dev: drm device for the ioctl
3216 * @data: data pointer for the ioctl
3217 * @file_priv: drm file for the ioctl call
3219 * Lookup the FB given its ID and return info about it.
3221 * Called by the user via ioctl.
3224 * Zero on success, errno on failure.
3226 int drm_mode_getfb(struct drm_device *dev,
3227 void *data, struct drm_file *file_priv)
3229 struct drm_mode_fb_cmd *r = data;
3230 struct drm_framebuffer *fb;
3233 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3236 fb = drm_framebuffer_lookup(dev, r->fb_id);
3240 r->height = fb->height;
3241 r->width = fb->width;
3242 r->depth = fb->depth;
3243 r->bpp = fb->bits_per_pixel;
3244 r->pitch = fb->pitches[0];
3245 if (fb->funcs->create_handle) {
3246 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
3247 drm_is_control_client(file_priv)) {
3248 ret = fb->funcs->create_handle(fb, file_priv,
3251 /* GET_FB() is an unprivileged ioctl so we must not
3252 * return a buffer-handle to non-master processes! For
3253 * backwards-compatibility reasons, we cannot make
3254 * GET_FB() privileged, so just return an invalid handle
3255 * for non-masters. */
3263 drm_framebuffer_unreference(fb);
3269 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3270 * @dev: drm device for the ioctl
3271 * @data: data pointer for the ioctl
3272 * @file_priv: drm file for the ioctl call
3274 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3275 * rectangle list. Generic userspace which does frontbuffer rendering must call
3276 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3277 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3279 * Modesetting drivers which always update the frontbuffer do not need to
3280 * implement the corresponding ->dirty framebuffer callback.
3282 * Called by the user via ioctl.
3285 * Zero on success, errno on failure.
3287 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3288 void *data, struct drm_file *file_priv)
3290 struct drm_clip_rect __user *clips_ptr;
3291 struct drm_clip_rect *clips = NULL;
3292 struct drm_mode_fb_dirty_cmd *r = data;
3293 struct drm_framebuffer *fb;
3298 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3301 fb = drm_framebuffer_lookup(dev, r->fb_id);
3305 num_clips = r->num_clips;
3306 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3308 if (!num_clips != !clips_ptr) {
3313 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3315 /* If userspace annotates copy, clips must come in pairs */
3316 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3321 if (num_clips && clips_ptr) {
3322 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3326 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
3332 ret = copy_from_user(clips, clips_ptr,
3333 num_clips * sizeof(*clips));
3340 if (fb->funcs->dirty) {
3341 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3350 drm_framebuffer_unreference(fb);
3357 * drm_fb_release - remove and free the FBs on this file
3358 * @priv: drm file for the ioctl
3360 * Destroy all the FBs associated with @filp.
3362 * Called by the user via ioctl.
3365 * Zero on success, errno on failure.
3367 void drm_fb_release(struct drm_file *priv)
3369 struct drm_device *dev = priv->minor->dev;
3370 struct drm_framebuffer *fb, *tfb;
3372 mutex_lock(&priv->fbs_lock);
3373 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3375 mutex_lock(&dev->mode_config.fb_lock);
3376 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3377 __drm_framebuffer_unregister(dev, fb);
3378 mutex_unlock(&dev->mode_config.fb_lock);
3380 list_del_init(&fb->filp_head);
3382 /* This will also drop the fpriv->fbs reference. */
3383 drm_framebuffer_remove(fb);
3385 mutex_unlock(&priv->fbs_lock);
3389 * drm_property_create - create a new property type
3391 * @flags: flags specifying the property type
3392 * @name: name of the property
3393 * @num_values: number of pre-defined values
3395 * This creates a new generic drm property which can then be attached to a drm
3396 * object with drm_object_attach_property. The returned property object must be
3397 * freed with drm_property_destroy.
3400 * A pointer to the newly created property on success, NULL on failure.
3402 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3403 const char *name, int num_values)
3405 struct drm_property *property = NULL;
3408 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3412 property->dev = dev;
3415 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
3416 if (!property->values)
3420 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3424 property->flags = flags;
3425 property->num_values = num_values;
3426 INIT_LIST_HEAD(&property->enum_blob_list);
3429 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3430 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3433 list_add_tail(&property->head, &dev->mode_config.property_list);
3435 WARN_ON(!drm_property_type_valid(property));
3439 kfree(property->values);
3443 EXPORT_SYMBOL(drm_property_create);
3446 * drm_property_create_enum - create a new enumeration property type
3448 * @flags: flags specifying the property type
3449 * @name: name of the property
3450 * @props: enumeration lists with property values
3451 * @num_values: number of pre-defined values
3453 * This creates a new generic drm property which can then be attached to a drm
3454 * object with drm_object_attach_property. The returned property object must be
3455 * freed with drm_property_destroy.
3457 * Userspace is only allowed to set one of the predefined values for enumeration
3461 * A pointer to the newly created property on success, NULL on failure.
3463 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3465 const struct drm_prop_enum_list *props,
3468 struct drm_property *property;
3471 flags |= DRM_MODE_PROP_ENUM;
3473 property = drm_property_create(dev, flags, name, num_values);
3477 for (i = 0; i < num_values; i++) {
3478 ret = drm_property_add_enum(property, i,
3482 drm_property_destroy(dev, property);
3489 EXPORT_SYMBOL(drm_property_create_enum);
3492 * drm_property_create_bitmask - create a new bitmask property type
3494 * @flags: flags specifying the property type
3495 * @name: name of the property
3496 * @props: enumeration lists with property bitflags
3497 * @num_values: number of pre-defined values
3499 * This creates a new generic drm property which can then be attached to a drm
3500 * object with drm_object_attach_property. The returned property object must be
3501 * freed with drm_property_destroy.
3503 * Compared to plain enumeration properties userspace is allowed to set any
3504 * or'ed together combination of the predefined property bitflag values
3507 * A pointer to the newly created property on success, NULL on failure.
3509 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3510 int flags, const char *name,
3511 const struct drm_prop_enum_list *props,
3513 uint64_t supported_bits)
3515 struct drm_property *property;
3516 int i, ret, index = 0;
3517 int num_values = hweight64(supported_bits);
3519 flags |= DRM_MODE_PROP_BITMASK;
3521 property = drm_property_create(dev, flags, name, num_values);
3524 for (i = 0; i < num_props; i++) {
3525 if (!(supported_bits & (1ULL << props[i].type)))
3528 if (WARN_ON(index >= num_values)) {
3529 drm_property_destroy(dev, property);
3533 ret = drm_property_add_enum(property, index++,
3537 drm_property_destroy(dev, property);
3544 EXPORT_SYMBOL(drm_property_create_bitmask);
3546 static struct drm_property *property_create_range(struct drm_device *dev,
3547 int flags, const char *name,
3548 uint64_t min, uint64_t max)
3550 struct drm_property *property;
3552 property = drm_property_create(dev, flags, name, 2);
3556 property->values[0] = min;
3557 property->values[1] = max;
3563 * drm_property_create_range - create a new ranged property type
3565 * @flags: flags specifying the property type
3566 * @name: name of the property
3567 * @min: minimum value of the property
3568 * @max: maximum value of the property
3570 * This creates a new generic drm property which can then be attached to a drm
3571 * object with drm_object_attach_property. The returned property object must be
3572 * freed with drm_property_destroy.
3574 * Userspace is allowed to set any interger value in the (min, max) range
3578 * A pointer to the newly created property on success, NULL on failure.
3580 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3582 uint64_t min, uint64_t max)
3584 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3587 EXPORT_SYMBOL(drm_property_create_range);
3589 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3590 int flags, const char *name,
3591 int64_t min, int64_t max)
3593 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3594 name, I642U64(min), I642U64(max));
3596 EXPORT_SYMBOL(drm_property_create_signed_range);
3598 struct drm_property *drm_property_create_object(struct drm_device *dev,
3599 int flags, const char *name, uint32_t type)
3601 struct drm_property *property;
3603 flags |= DRM_MODE_PROP_OBJECT;
3605 property = drm_property_create(dev, flags, name, 1);
3609 property->values[0] = type;
3613 EXPORT_SYMBOL(drm_property_create_object);
3616 * drm_property_add_enum - add a possible value to an enumeration property
3617 * @property: enumeration property to change
3618 * @index: index of the new enumeration
3619 * @value: value of the new enumeration
3620 * @name: symbolic name of the new enumeration
3622 * This functions adds enumerations to a property.
3624 * It's use is deprecated, drivers should use one of the more specific helpers
3625 * to directly create the property with all enumerations already attached.
3628 * Zero on success, error code on failure.
3630 int drm_property_add_enum(struct drm_property *property, int index,
3631 uint64_t value, const char *name)
3633 struct drm_property_enum *prop_enum;
3635 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3636 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
3640 * Bitmask enum properties have the additional constraint of values
3643 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3647 if (!list_empty(&property->enum_blob_list)) {
3648 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3649 if (prop_enum->value == value) {
3650 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3651 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3657 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3661 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3662 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3663 prop_enum->value = value;
3665 property->values[index] = value;
3666 list_add_tail(&prop_enum->head, &property->enum_blob_list);
3669 EXPORT_SYMBOL(drm_property_add_enum);
3672 * drm_property_destroy - destroy a drm property
3674 * @property: property to destry
3676 * This function frees a property including any attached resources like
3677 * enumeration values.
3679 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3681 struct drm_property_enum *prop_enum, *pt;
3683 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
3684 list_del(&prop_enum->head);
3688 if (property->num_values)
3689 kfree(property->values);
3690 drm_mode_object_put(dev, &property->base);
3691 list_del(&property->head);
3694 EXPORT_SYMBOL(drm_property_destroy);
3697 * drm_object_attach_property - attach a property to a modeset object
3698 * @obj: drm modeset object
3699 * @property: property to attach
3700 * @init_val: initial value of the property
3702 * This attaches the given property to the modeset object with the given initial
3703 * value. Currently this function cannot fail since the properties are stored in
3704 * a statically sized array.
3706 void drm_object_attach_property(struct drm_mode_object *obj,
3707 struct drm_property *property,
3710 int count = obj->properties->count;
3712 if (count == DRM_OBJECT_MAX_PROPERTY) {
3713 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3714 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3715 "you see this message on the same object type.\n",
3720 obj->properties->ids[count] = property->base.id;
3721 obj->properties->values[count] = init_val;
3722 obj->properties->count++;
3724 EXPORT_SYMBOL(drm_object_attach_property);
3727 * drm_object_property_set_value - set the value of a property
3728 * @obj: drm mode object to set property value for
3729 * @property: property to set
3730 * @val: value the property should be set to
3732 * This functions sets a given property on a given object. This function only
3733 * changes the software state of the property, it does not call into the
3734 * driver's ->set_property callback.
3737 * Zero on success, error code on failure.
3739 int drm_object_property_set_value(struct drm_mode_object *obj,
3740 struct drm_property *property, uint64_t val)
3744 for (i = 0; i < obj->properties->count; i++) {
3745 if (obj->properties->ids[i] == property->base.id) {
3746 obj->properties->values[i] = val;
3753 EXPORT_SYMBOL(drm_object_property_set_value);
3756 * drm_object_property_get_value - retrieve the value of a property
3757 * @obj: drm mode object to get property value from
3758 * @property: property to retrieve
3759 * @val: storage for the property value
3761 * This function retrieves the softare state of the given property for the given
3762 * property. Since there is no driver callback to retrieve the current property
3763 * value this might be out of sync with the hardware, depending upon the driver
3767 * Zero on success, error code on failure.
3769 int drm_object_property_get_value(struct drm_mode_object *obj,
3770 struct drm_property *property, uint64_t *val)
3774 for (i = 0; i < obj->properties->count; i++) {
3775 if (obj->properties->ids[i] == property->base.id) {
3776 *val = obj->properties->values[i];
3783 EXPORT_SYMBOL(drm_object_property_get_value);
3786 * drm_mode_getproperty_ioctl - get the current value of a connector's property
3789 * @file_priv: DRM file info
3791 * This function retrieves the current value for an connectors's property.
3793 * Called by the user via ioctl.
3796 * Zero on success, errno on failure.
3798 int drm_mode_getproperty_ioctl(struct drm_device *dev,
3799 void *data, struct drm_file *file_priv)
3801 struct drm_mode_get_property *out_resp = data;
3802 struct drm_property *property;
3805 int value_count = 0;
3808 struct drm_property_enum *prop_enum;
3809 struct drm_mode_property_enum __user *enum_ptr;
3810 struct drm_property_blob *prop_blob;
3811 uint32_t __user *blob_id_ptr;
3812 uint64_t __user *values_ptr;
3813 uint32_t __user *blob_length_ptr;
3815 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3818 drm_modeset_lock_all(dev);
3819 property = drm_property_find(dev, out_resp->prop_id);
3825 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3826 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3827 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
3829 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
3830 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
3834 value_count = property->num_values;
3836 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
3837 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
3838 out_resp->flags = property->flags;
3840 if ((out_resp->count_values >= value_count) && value_count) {
3841 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
3842 for (i = 0; i < value_count; i++) {
3843 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
3849 out_resp->count_values = value_count;
3851 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3852 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3853 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
3855 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3856 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3858 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
3863 if (copy_to_user(&enum_ptr[copied].name,
3864 &prop_enum->name, DRM_PROP_NAME_LEN)) {
3871 out_resp->count_enum_blobs = enum_count;
3874 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
3875 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
3877 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr;
3878 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr;
3880 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
3881 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
3886 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
3894 out_resp->count_enum_blobs = blob_count;
3897 drm_modeset_unlock_all(dev);
3901 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
3904 struct drm_property_blob *blob;
3907 if (!length || !data)
3910 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
3914 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
3920 blob->length = length;
3922 memcpy(blob->data, data, length);
3924 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
3928 static void drm_property_destroy_blob(struct drm_device *dev,
3929 struct drm_property_blob *blob)
3931 drm_mode_object_put(dev, &blob->base);
3932 list_del(&blob->head);
3937 * drm_mode_getblob_ioctl - get the contents of a blob property value
3940 * @file_priv: DRM file info
3942 * This function retrieves the contents of a blob property. The value stored in
3943 * an object's blob property is just a normal modeset object id.
3945 * Called by the user via ioctl.
3948 * Zero on success, errno on failure.
3950 int drm_mode_getblob_ioctl(struct drm_device *dev,
3951 void *data, struct drm_file *file_priv)
3953 struct drm_mode_get_blob *out_resp = data;
3954 struct drm_property_blob *blob;
3956 void __user *blob_ptr;
3958 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3961 drm_modeset_lock_all(dev);
3962 blob = drm_property_blob_find(dev, out_resp->blob_id);
3968 if (out_resp->length == blob->length) {
3969 blob_ptr = (void __user *)(unsigned long)out_resp->data;
3970 if (copy_to_user(blob_ptr, blob->data, blob->length)){
3975 out_resp->length = blob->length;
3978 drm_modeset_unlock_all(dev);
3982 int drm_mode_connector_set_path_property(struct drm_connector *connector,
3985 struct drm_device *dev = connector->dev;
3987 size = strlen(path) + 1;
3989 connector->path_blob_ptr = drm_property_create_blob(connector->dev,
3991 if (!connector->path_blob_ptr)
3994 ret = drm_object_property_set_value(&connector->base,
3995 dev->mode_config.path_property,
3996 connector->path_blob_ptr->base.id);
3999 EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4002 * drm_mode_connector_update_edid_property - update the edid property of a connector
4003 * @connector: drm connector
4004 * @edid: new value of the edid property
4006 * This function creates a new blob modeset object and assigns its id to the
4007 * connector's edid property.
4010 * Zero on success, errno on failure.
4012 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4015 struct drm_device *dev = connector->dev;
4018 /* ignore requests to set edid when overridden */
4019 if (connector->override_edid)
4022 if (connector->edid_blob_ptr)
4023 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
4025 /* Delete edid, when there is none. */
4027 connector->edid_blob_ptr = NULL;
4028 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
4032 size = EDID_LENGTH * (1 + edid->extensions);
4033 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
4035 if (!connector->edid_blob_ptr)
4038 ret = drm_object_property_set_value(&connector->base,
4039 dev->mode_config.edid_property,
4040 connector->edid_blob_ptr->base.id);
4044 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4046 static bool drm_property_change_is_valid(struct drm_property *property,
4049 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4052 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
4053 if (value < property->values[0] || value > property->values[1])
4056 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4057 int64_t svalue = U642I64(value);
4058 if (svalue < U642I64(property->values[0]) ||
4059 svalue > U642I64(property->values[1]))
4062 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4064 uint64_t valid_mask = 0;
4065 for (i = 0; i < property->num_values; i++)
4066 valid_mask |= (1ULL << property->values[i]);
4067 return !(value & ~valid_mask);
4068 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
4069 /* Only the driver knows */
4071 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4072 struct drm_mode_object *obj;
4073 /* a zero value for an object property translates to null: */
4077 * NOTE: use _object_find() directly to bypass restriction on
4078 * looking up refcnt'd objects (ie. fb's). For a refcnt'd
4079 * object this could race against object finalization, so it
4080 * simply tells us that the object *was* valid. Which is good
4083 obj = _object_find(property->dev, value, property->values[0]);
4087 for (i = 0; i < property->num_values; i++)
4088 if (property->values[i] == value)
4095 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4098 * @file_priv: DRM file info
4100 * This function sets the current value for a connectors's property. It also
4101 * calls into a driver's ->set_property callback to update the hardware state
4103 * Called by the user via ioctl.
4106 * Zero on success, errno on failure.
4108 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4109 void *data, struct drm_file *file_priv)
4111 struct drm_mode_connector_set_property *conn_set_prop = data;
4112 struct drm_mode_obj_set_property obj_set_prop = {
4113 .value = conn_set_prop->value,
4114 .prop_id = conn_set_prop->prop_id,
4115 .obj_id = conn_set_prop->connector_id,
4116 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4119 /* It does all the locking and checking we need */
4120 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
4123 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4124 struct drm_property *property,
4128 struct drm_connector *connector = obj_to_connector(obj);
4130 /* Do DPMS ourselves */
4131 if (property == connector->dev->mode_config.dpms_property) {
4132 if (connector->funcs->dpms)
4133 (*connector->funcs->dpms)(connector, (int)value);
4135 } else if (connector->funcs->set_property)
4136 ret = connector->funcs->set_property(connector, property, value);
4138 /* store the property value if successful */
4140 drm_object_property_set_value(&connector->base, property, value);
4144 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4145 struct drm_property *property,
4149 struct drm_crtc *crtc = obj_to_crtc(obj);
4151 if (crtc->funcs->set_property)
4152 ret = crtc->funcs->set_property(crtc, property, value);
4154 drm_object_property_set_value(obj, property, value);
4159 static int drm_mode_plane_set_obj_prop(struct drm_mode_object *obj,
4160 struct drm_property *property,
4164 struct drm_plane *plane = obj_to_plane(obj);
4166 if (plane->funcs->set_property)
4167 ret = plane->funcs->set_property(plane, property, value);
4169 drm_object_property_set_value(obj, property, value);
4175 * drm_mode_getproperty_ioctl - get the current value of a object's property
4178 * @file_priv: DRM file info
4180 * This function retrieves the current value for an object's property. Compared
4181 * to the connector specific ioctl this one is extended to also work on crtc and
4184 * Called by the user via ioctl.
4187 * Zero on success, errno on failure.
4189 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4190 struct drm_file *file_priv)
4192 struct drm_mode_obj_get_properties *arg = data;
4193 struct drm_mode_object *obj;
4197 int props_count = 0;
4198 uint32_t __user *props_ptr;
4199 uint64_t __user *prop_values_ptr;
4201 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4204 drm_modeset_lock_all(dev);
4206 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4211 if (!obj->properties) {
4216 props_count = obj->properties->count;
4218 /* This ioctl is called twice, once to determine how much space is
4219 * needed, and the 2nd time to fill it. */
4220 if ((arg->count_props >= props_count) && props_count) {
4222 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
4223 prop_values_ptr = (uint64_t __user *)(unsigned long)
4224 (arg->prop_values_ptr);
4225 for (i = 0; i < props_count; i++) {
4226 if (put_user(obj->properties->ids[i],
4227 props_ptr + copied)) {
4231 if (put_user(obj->properties->values[i],
4232 prop_values_ptr + copied)) {
4239 arg->count_props = props_count;
4241 drm_modeset_unlock_all(dev);
4246 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4249 * @file_priv: DRM file info
4251 * This function sets the current value for an object's property. It also calls
4252 * into a driver's ->set_property callback to update the hardware state.
4253 * Compared to the connector specific ioctl this one is extended to also work on
4254 * crtc and plane objects.
4256 * Called by the user via ioctl.
4259 * Zero on success, errno on failure.
4261 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4262 struct drm_file *file_priv)
4264 struct drm_mode_obj_set_property *arg = data;
4265 struct drm_mode_object *arg_obj;
4266 struct drm_mode_object *prop_obj;
4267 struct drm_property *property;
4271 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4274 drm_modeset_lock_all(dev);
4276 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4281 if (!arg_obj->properties)
4284 for (i = 0; i < arg_obj->properties->count; i++)
4285 if (arg_obj->properties->ids[i] == arg->prop_id)
4288 if (i == arg_obj->properties->count)
4291 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4292 DRM_MODE_OBJECT_PROPERTY);
4297 property = obj_to_property(prop_obj);
4299 if (!drm_property_change_is_valid(property, arg->value))
4302 switch (arg_obj->type) {
4303 case DRM_MODE_OBJECT_CONNECTOR:
4304 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4307 case DRM_MODE_OBJECT_CRTC:
4308 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4310 case DRM_MODE_OBJECT_PLANE:
4311 ret = drm_mode_plane_set_obj_prop(arg_obj, property, arg->value);
4316 drm_modeset_unlock_all(dev);
4321 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4322 * @connector: connector to attach
4323 * @encoder: encoder to attach @connector to
4325 * This function links up a connector to an encoder. Note that the routing
4326 * restrictions between encoders and crtcs are exposed to userspace through the
4327 * possible_clones and possible_crtcs bitmasks.
4330 * Zero on success, errno on failure.
4332 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4333 struct drm_encoder *encoder)
4337 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4338 if (connector->encoder_ids[i] == 0) {
4339 connector->encoder_ids[i] = encoder->base.id;
4345 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4348 * drm_mode_crtc_set_gamma_size - set the gamma table size
4349 * @crtc: CRTC to set the gamma table size for
4350 * @gamma_size: size of the gamma table
4352 * Drivers which support gamma tables should set this to the supported gamma
4353 * table size when initializing the CRTC. Currently the drm core only supports a
4354 * fixed gamma table size.
4357 * Zero on success, errno on failure.
4359 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
4362 crtc->gamma_size = gamma_size;
4364 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
4365 if (!crtc->gamma_store) {
4366 crtc->gamma_size = 0;
4372 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
4375 * drm_mode_gamma_set_ioctl - set the gamma table
4378 * @file_priv: DRM file info
4380 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4381 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4383 * Called by the user via ioctl.
4386 * Zero on success, errno on failure.
4388 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
4389 void *data, struct drm_file *file_priv)
4391 struct drm_mode_crtc_lut *crtc_lut = data;
4392 struct drm_crtc *crtc;
4393 void *r_base, *g_base, *b_base;
4397 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4400 drm_modeset_lock_all(dev);
4401 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4407 if (crtc->funcs->gamma_set == NULL) {
4412 /* memcpy into gamma store */
4413 if (crtc_lut->gamma_size != crtc->gamma_size) {
4418 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4419 r_base = crtc->gamma_store;
4420 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4425 g_base = r_base + size;
4426 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4431 b_base = g_base + size;
4432 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4437 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
4440 drm_modeset_unlock_all(dev);
4446 * drm_mode_gamma_get_ioctl - get the gamma table
4449 * @file_priv: DRM file info
4451 * Copy the current gamma table into the storage provided. This also provides
4452 * the gamma table size the driver expects, which can be used to size the
4453 * allocated storage.
4455 * Called by the user via ioctl.
4458 * Zero on success, errno on failure.
4460 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4461 void *data, struct drm_file *file_priv)
4463 struct drm_mode_crtc_lut *crtc_lut = data;
4464 struct drm_crtc *crtc;
4465 void *r_base, *g_base, *b_base;
4469 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4472 drm_modeset_lock_all(dev);
4473 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4479 /* memcpy into gamma store */
4480 if (crtc_lut->gamma_size != crtc->gamma_size) {
4485 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4486 r_base = crtc->gamma_store;
4487 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4492 g_base = r_base + size;
4493 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4498 b_base = g_base + size;
4499 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4504 drm_modeset_unlock_all(dev);
4509 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4512 * @file_priv: DRM file info
4514 * This schedules an asynchronous update on a given CRTC, called page flip.
4515 * Optionally a drm event is generated to signal the completion of the event.
4516 * Generic drivers cannot assume that a pageflip with changed framebuffer
4517 * properties (including driver specific metadata like tiling layout) will work,
4518 * but some drivers support e.g. pixel format changes through the pageflip
4521 * Called by the user via ioctl.
4524 * Zero on success, errno on failure.
4526 int drm_mode_page_flip_ioctl(struct drm_device *dev,
4527 void *data, struct drm_file *file_priv)
4529 struct drm_mode_crtc_page_flip *page_flip = data;
4530 struct drm_crtc *crtc;
4531 struct drm_framebuffer *fb = NULL, *old_fb = NULL;
4532 struct drm_pending_vblank_event *e = NULL;
4533 unsigned long flags;
4536 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4537 page_flip->reserved != 0)
4540 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4543 crtc = drm_crtc_find(dev, page_flip->crtc_id);
4547 drm_modeset_lock(&crtc->mutex, NULL);
4548 if (crtc->primary->fb == NULL) {
4549 /* The framebuffer is currently unbound, presumably
4550 * due to a hotplug event, that userspace has not
4557 if (crtc->funcs->page_flip == NULL)
4560 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
4566 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4570 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
4571 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4576 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4578 spin_lock_irqsave(&dev->event_lock, flags);
4579 if (file_priv->event_space < sizeof e->event) {
4580 spin_unlock_irqrestore(&dev->event_lock, flags);
4583 file_priv->event_space -= sizeof e->event;
4584 spin_unlock_irqrestore(&dev->event_lock, flags);
4586 e = kzalloc(sizeof *e, GFP_KERNEL);
4588 spin_lock_irqsave(&dev->event_lock, flags);
4589 file_priv->event_space += sizeof e->event;
4590 spin_unlock_irqrestore(&dev->event_lock, flags);
4594 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
4595 e->event.base.length = sizeof e->event;
4596 e->event.user_data = page_flip->user_data;
4597 e->base.event = &e->event.base;
4598 e->base.file_priv = file_priv;
4600 (void (*) (struct drm_pending_event *)) kfree;
4603 old_fb = crtc->primary->fb;
4604 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
4606 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4607 spin_lock_irqsave(&dev->event_lock, flags);
4608 file_priv->event_space += sizeof e->event;
4609 spin_unlock_irqrestore(&dev->event_lock, flags);
4612 /* Keep the old fb, don't unref it. */
4616 * Warn if the driver hasn't properly updated the crtc->fb
4617 * field to reflect that the new framebuffer is now used.
4618 * Failing to do so will screw with the reference counting
4621 WARN_ON(crtc->primary->fb != fb);
4622 /* Unref only the old framebuffer. */
4628 drm_framebuffer_unreference(fb);
4630 drm_framebuffer_unreference(old_fb);
4631 drm_modeset_unlock(&crtc->mutex);
4637 * drm_mode_config_reset - call ->reset callbacks
4640 * This functions calls all the crtc's, encoder's and connector's ->reset
4641 * callback. Drivers can use this in e.g. their driver load or resume code to
4642 * reset hardware and software state.
4644 void drm_mode_config_reset(struct drm_device *dev)
4646 struct drm_crtc *crtc;
4647 struct drm_encoder *encoder;
4648 struct drm_connector *connector;
4650 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4651 if (crtc->funcs->reset)
4652 crtc->funcs->reset(crtc);
4654 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4655 if (encoder->funcs->reset)
4656 encoder->funcs->reset(encoder);
4658 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4659 connector->status = connector_status_unknown;
4661 if (connector->funcs->reset)
4662 connector->funcs->reset(connector);
4665 EXPORT_SYMBOL(drm_mode_config_reset);
4668 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4671 * @file_priv: DRM file info
4673 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4674 * TTM or something else entirely) and returns the resulting buffer handle. This
4675 * handle can then be wrapped up into a framebuffer modeset object.
4677 * Note that userspace is not allowed to use such objects for render
4678 * acceleration - drivers must create their own private ioctls for such a use
4681 * Called by the user via ioctl.
4684 * Zero on success, errno on failure.
4686 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
4687 void *data, struct drm_file *file_priv)
4689 struct drm_mode_create_dumb *args = data;
4690 u32 cpp, stride, size;
4692 if (!dev->driver->dumb_create)
4694 if (!args->width || !args->height || !args->bpp)
4697 /* overflow checks for 32bit size calculations */
4698 cpp = DIV_ROUND_UP(args->bpp, 8);
4699 if (cpp > 0xffffffffU / args->width)
4701 stride = cpp * args->width;
4702 if (args->height > 0xffffffffU / stride)
4705 /* test for wrap-around */
4706 size = args->height * stride;
4707 if (PAGE_ALIGN(size) == 0)
4710 return dev->driver->dumb_create(file_priv, dev, args);
4714 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4717 * @file_priv: DRM file info
4719 * Allocate an offset in the drm device node's address space to be able to
4720 * memory map a dumb buffer.
4722 * Called by the user via ioctl.
4725 * Zero on success, errno on failure.
4727 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
4728 void *data, struct drm_file *file_priv)
4730 struct drm_mode_map_dumb *args = data;
4732 /* call driver ioctl to get mmap offset */
4733 if (!dev->driver->dumb_map_offset)
4736 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
4740 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4743 * @file_priv: DRM file info
4745 * This destroys the userspace handle for the given dumb backing storage buffer.
4746 * Since buffer objects must be reference counted in the kernel a buffer object
4747 * won't be immediately freed if a framebuffer modeset object still uses it.
4749 * Called by the user via ioctl.
4752 * Zero on success, errno on failure.
4754 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
4755 void *data, struct drm_file *file_priv)
4757 struct drm_mode_destroy_dumb *args = data;
4759 if (!dev->driver->dumb_destroy)
4762 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
4766 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4767 * @format: pixel format (DRM_FORMAT_*)
4768 * @depth: storage for the depth value
4769 * @bpp: storage for the bpp value
4771 * This only supports RGB formats here for compat with code that doesn't use
4772 * pixel formats directly yet.
4774 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
4779 case DRM_FORMAT_RGB332:
4780 case DRM_FORMAT_BGR233:
4784 case DRM_FORMAT_XRGB1555:
4785 case DRM_FORMAT_XBGR1555:
4786 case DRM_FORMAT_RGBX5551:
4787 case DRM_FORMAT_BGRX5551:
4788 case DRM_FORMAT_ARGB1555:
4789 case DRM_FORMAT_ABGR1555:
4790 case DRM_FORMAT_RGBA5551:
4791 case DRM_FORMAT_BGRA5551:
4795 case DRM_FORMAT_RGB565:
4796 case DRM_FORMAT_BGR565:
4800 case DRM_FORMAT_RGB888:
4801 case DRM_FORMAT_BGR888:
4805 case DRM_FORMAT_XRGB8888:
4806 case DRM_FORMAT_XBGR8888:
4807 case DRM_FORMAT_RGBX8888:
4808 case DRM_FORMAT_BGRX8888:
4812 case DRM_FORMAT_XRGB2101010:
4813 case DRM_FORMAT_XBGR2101010:
4814 case DRM_FORMAT_RGBX1010102:
4815 case DRM_FORMAT_BGRX1010102:
4816 case DRM_FORMAT_ARGB2101010:
4817 case DRM_FORMAT_ABGR2101010:
4818 case DRM_FORMAT_RGBA1010102:
4819 case DRM_FORMAT_BGRA1010102:
4823 case DRM_FORMAT_ARGB8888:
4824 case DRM_FORMAT_ABGR8888:
4825 case DRM_FORMAT_RGBA8888:
4826 case DRM_FORMAT_BGRA8888:
4831 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4832 drm_get_format_name(format));
4838 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
4841 * drm_format_num_planes - get the number of planes for format
4842 * @format: pixel format (DRM_FORMAT_*)
4845 * The number of planes used by the specified pixel format.
4847 int drm_format_num_planes(uint32_t format)
4850 case DRM_FORMAT_YUV410:
4851 case DRM_FORMAT_YVU410:
4852 case DRM_FORMAT_YUV411:
4853 case DRM_FORMAT_YVU411:
4854 case DRM_FORMAT_YUV420:
4855 case DRM_FORMAT_YVU420:
4856 case DRM_FORMAT_YUV422:
4857 case DRM_FORMAT_YVU422:
4858 case DRM_FORMAT_YUV444:
4859 case DRM_FORMAT_YVU444:
4861 case DRM_FORMAT_NV12:
4862 case DRM_FORMAT_NV21:
4863 case DRM_FORMAT_NV16:
4864 case DRM_FORMAT_NV61:
4865 case DRM_FORMAT_NV24:
4866 case DRM_FORMAT_NV42:
4872 EXPORT_SYMBOL(drm_format_num_planes);
4875 * drm_format_plane_cpp - determine the bytes per pixel value
4876 * @format: pixel format (DRM_FORMAT_*)
4877 * @plane: plane index
4880 * The bytes per pixel value for the specified plane.
4882 int drm_format_plane_cpp(uint32_t format, int plane)
4887 if (plane >= drm_format_num_planes(format))
4891 case DRM_FORMAT_YUYV:
4892 case DRM_FORMAT_YVYU:
4893 case DRM_FORMAT_UYVY:
4894 case DRM_FORMAT_VYUY:
4896 case DRM_FORMAT_NV12:
4897 case DRM_FORMAT_NV21:
4898 case DRM_FORMAT_NV16:
4899 case DRM_FORMAT_NV61:
4900 case DRM_FORMAT_NV24:
4901 case DRM_FORMAT_NV42:
4902 return plane ? 2 : 1;
4903 case DRM_FORMAT_YUV410:
4904 case DRM_FORMAT_YVU410:
4905 case DRM_FORMAT_YUV411:
4906 case DRM_FORMAT_YVU411:
4907 case DRM_FORMAT_YUV420:
4908 case DRM_FORMAT_YVU420:
4909 case DRM_FORMAT_YUV422:
4910 case DRM_FORMAT_YVU422:
4911 case DRM_FORMAT_YUV444:
4912 case DRM_FORMAT_YVU444:
4915 drm_fb_get_bpp_depth(format, &depth, &bpp);
4919 EXPORT_SYMBOL(drm_format_plane_cpp);
4922 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
4923 * @format: pixel format (DRM_FORMAT_*)
4926 * The horizontal chroma subsampling factor for the
4927 * specified pixel format.
4929 int drm_format_horz_chroma_subsampling(uint32_t format)
4932 case DRM_FORMAT_YUV411:
4933 case DRM_FORMAT_YVU411:
4934 case DRM_FORMAT_YUV410:
4935 case DRM_FORMAT_YVU410:
4937 case DRM_FORMAT_YUYV:
4938 case DRM_FORMAT_YVYU:
4939 case DRM_FORMAT_UYVY:
4940 case DRM_FORMAT_VYUY:
4941 case DRM_FORMAT_NV12:
4942 case DRM_FORMAT_NV21:
4943 case DRM_FORMAT_NV16:
4944 case DRM_FORMAT_NV61:
4945 case DRM_FORMAT_YUV422:
4946 case DRM_FORMAT_YVU422:
4947 case DRM_FORMAT_YUV420:
4948 case DRM_FORMAT_YVU420:
4954 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
4957 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
4958 * @format: pixel format (DRM_FORMAT_*)
4961 * The vertical chroma subsampling factor for the
4962 * specified pixel format.
4964 int drm_format_vert_chroma_subsampling(uint32_t format)
4967 case DRM_FORMAT_YUV410:
4968 case DRM_FORMAT_YVU410:
4970 case DRM_FORMAT_YUV420:
4971 case DRM_FORMAT_YVU420:
4972 case DRM_FORMAT_NV12:
4973 case DRM_FORMAT_NV21:
4979 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
4982 * drm_rotation_simplify() - Try to simplify the rotation
4983 * @rotation: Rotation to be simplified
4984 * @supported_rotations: Supported rotations
4986 * Attempt to simplify the rotation to a form that is supported.
4987 * Eg. if the hardware supports everything except DRM_REFLECT_X
4988 * one could call this function like this:
4990 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
4991 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
4992 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
4994 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
4995 * transforms the hardware supports, this function may not
4996 * be able to produce a supported transform, so the caller should
4997 * check the result afterwards.
4999 unsigned int drm_rotation_simplify(unsigned int rotation,
5000 unsigned int supported_rotations)
5002 if (rotation & ~supported_rotations) {
5003 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5004 rotation = (rotation & ~0xf) | BIT((ffs(rotation & 0xf) + 1) % 4);
5009 EXPORT_SYMBOL(drm_rotation_simplify);
5012 * drm_mode_config_init - initialize DRM mode_configuration structure
5015 * Initialize @dev's mode_config structure, used for tracking the graphics
5016 * configuration of @dev.
5018 * Since this initializes the modeset locks, no locking is possible. Which is no
5019 * problem, since this should happen single threaded at init time. It is the
5020 * driver's problem to ensure this guarantee.
5023 void drm_mode_config_init(struct drm_device *dev)
5025 mutex_init(&dev->mode_config.mutex);
5026 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
5027 mutex_init(&dev->mode_config.idr_mutex);
5028 mutex_init(&dev->mode_config.fb_lock);
5029 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5030 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5031 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5032 INIT_LIST_HEAD(&dev->mode_config.bridge_list);
5033 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5034 INIT_LIST_HEAD(&dev->mode_config.property_list);
5035 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5036 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5037 idr_init(&dev->mode_config.crtc_idr);
5039 drm_modeset_lock_all(dev);
5040 drm_mode_create_standard_connector_properties(dev);
5041 drm_mode_create_standard_plane_properties(dev);
5042 drm_modeset_unlock_all(dev);
5044 /* Just to be sure */
5045 dev->mode_config.num_fb = 0;
5046 dev->mode_config.num_connector = 0;
5047 dev->mode_config.num_crtc = 0;
5048 dev->mode_config.num_encoder = 0;
5049 dev->mode_config.num_overlay_plane = 0;
5050 dev->mode_config.num_total_plane = 0;
5052 EXPORT_SYMBOL(drm_mode_config_init);
5055 * drm_mode_config_cleanup - free up DRM mode_config info
5058 * Free up all the connectors and CRTCs associated with this DRM device, then
5059 * free up the framebuffers and associated buffer objects.
5061 * Note that since this /should/ happen single-threaded at driver/device
5062 * teardown time, no locking is required. It's the driver's job to ensure that
5063 * this guarantee actually holds true.
5065 * FIXME: cleanup any dangling user buffer objects too
5067 void drm_mode_config_cleanup(struct drm_device *dev)
5069 struct drm_connector *connector, *ot;
5070 struct drm_crtc *crtc, *ct;
5071 struct drm_encoder *encoder, *enct;
5072 struct drm_bridge *bridge, *brt;
5073 struct drm_framebuffer *fb, *fbt;
5074 struct drm_property *property, *pt;
5075 struct drm_property_blob *blob, *bt;
5076 struct drm_plane *plane, *plt;
5078 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5080 encoder->funcs->destroy(encoder);
5083 list_for_each_entry_safe(bridge, brt,
5084 &dev->mode_config.bridge_list, head) {
5085 bridge->funcs->destroy(bridge);
5088 list_for_each_entry_safe(connector, ot,
5089 &dev->mode_config.connector_list, head) {
5090 connector->funcs->destroy(connector);
5093 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5095 drm_property_destroy(dev, property);
5098 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5100 drm_property_destroy_blob(dev, blob);
5104 * Single-threaded teardown context, so it's not required to grab the
5105 * fb_lock to protect against concurrent fb_list access. Contrary, it
5106 * would actually deadlock with the drm_framebuffer_cleanup function.
5108 * Also, if there are any framebuffers left, that's a driver leak now,
5109 * so politely WARN about this.
5111 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5112 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5113 drm_framebuffer_remove(fb);
5116 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5118 plane->funcs->destroy(plane);
5121 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5122 crtc->funcs->destroy(crtc);
5125 idr_destroy(&dev->mode_config.crtc_idr);
5126 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
5128 EXPORT_SYMBOL(drm_mode_config_cleanup);
5130 struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5131 unsigned int supported_rotations)
5133 static const struct drm_prop_enum_list props[] = {
5134 { DRM_ROTATE_0, "rotate-0" },
5135 { DRM_ROTATE_90, "rotate-90" },
5136 { DRM_ROTATE_180, "rotate-180" },
5137 { DRM_ROTATE_270, "rotate-270" },
5138 { DRM_REFLECT_X, "reflect-x" },
5139 { DRM_REFLECT_Y, "reflect-y" },
5142 return drm_property_create_bitmask(dev, 0, "rotation",
5143 props, ARRAY_SIZE(props),
5144 supported_rotations);
5146 EXPORT_SYMBOL(drm_mode_create_rotation_property);