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"
45 * drm_modeset_lock_all - take all modeset locks
48 * This function takes all modeset locks, suitable where a more fine-grained
49 * scheme isn't (yet) implemented. Locks must be dropped with
50 * drm_modeset_unlock_all.
52 void drm_modeset_lock_all(struct drm_device *dev)
54 struct drm_mode_config *config = &dev->mode_config;
55 struct drm_modeset_acquire_ctx *ctx;
58 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
62 mutex_lock(&config->mutex);
64 drm_modeset_acquire_init(ctx, 0);
67 ret = drm_modeset_lock(&config->connection_mutex, ctx);
70 ret = drm_modeset_lock_all_crtcs(dev, ctx);
74 WARN_ON(config->acquire_ctx);
76 /* now we hold the locks, so now that it is safe, stash the
77 * ctx for drm_modeset_unlock_all():
79 config->acquire_ctx = ctx;
81 drm_warn_on_modeset_not_all_locked(dev);
86 if (ret == -EDEADLK) {
87 drm_modeset_backoff(ctx);
91 EXPORT_SYMBOL(drm_modeset_lock_all);
94 * drm_modeset_unlock_all - drop all modeset locks
97 * This function drop all modeset locks taken by drm_modeset_lock_all.
99 void drm_modeset_unlock_all(struct drm_device *dev)
101 struct drm_mode_config *config = &dev->mode_config;
102 struct drm_modeset_acquire_ctx *ctx = config->acquire_ctx;
107 config->acquire_ctx = NULL;
108 drm_modeset_drop_locks(ctx);
109 drm_modeset_acquire_fini(ctx);
113 mutex_unlock(&dev->mode_config.mutex);
115 EXPORT_SYMBOL(drm_modeset_unlock_all);
118 * drm_warn_on_modeset_not_all_locked - check that all modeset locks are locked
121 * Useful as a debug assert.
123 void drm_warn_on_modeset_not_all_locked(struct drm_device *dev)
125 struct drm_crtc *crtc;
127 /* Locking is currently fubar in the panic handler. */
128 if (oops_in_progress)
131 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
132 WARN_ON(!drm_modeset_is_locked(&crtc->mutex));
134 WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
135 WARN_ON(!mutex_is_locked(&dev->mode_config.mutex));
137 EXPORT_SYMBOL(drm_warn_on_modeset_not_all_locked);
139 /* Avoid boilerplate. I'm tired of typing. */
140 #define DRM_ENUM_NAME_FN(fnname, list) \
141 const char *fnname(int val) \
144 for (i = 0; i < ARRAY_SIZE(list); i++) { \
145 if (list[i].type == val) \
146 return list[i].name; \
148 return "(unknown)"; \
154 static const struct drm_prop_enum_list drm_dpms_enum_list[] =
155 { { DRM_MODE_DPMS_ON, "On" },
156 { DRM_MODE_DPMS_STANDBY, "Standby" },
157 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
158 { DRM_MODE_DPMS_OFF, "Off" }
161 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
163 static const struct drm_prop_enum_list drm_plane_type_enum_list[] =
165 { DRM_PLANE_TYPE_OVERLAY, "Overlay" },
166 { DRM_PLANE_TYPE_PRIMARY, "Primary" },
167 { DRM_PLANE_TYPE_CURSOR, "Cursor" },
171 * Optional properties
173 static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
175 { DRM_MODE_SCALE_NONE, "None" },
176 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
177 { DRM_MODE_SCALE_CENTER, "Center" },
178 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
182 * Non-global properties, but "required" for certain connectors.
184 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
186 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
187 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
188 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
191 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
193 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
195 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
196 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
197 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
200 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
201 drm_dvi_i_subconnector_enum_list)
203 static const struct drm_prop_enum_list drm_tv_select_enum_list[] =
205 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
206 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
207 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
208 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
209 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
212 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
214 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
216 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
217 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
218 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
219 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
220 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
223 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
224 drm_tv_subconnector_enum_list)
226 static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
227 { DRM_MODE_DIRTY_OFF, "Off" },
228 { DRM_MODE_DIRTY_ON, "On" },
229 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
232 struct drm_conn_prop_enum_list {
239 * Connector and encoder types.
241 static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
242 { { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
243 { DRM_MODE_CONNECTOR_VGA, "VGA" },
244 { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
245 { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
246 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
247 { DRM_MODE_CONNECTOR_Composite, "Composite" },
248 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
249 { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
250 { DRM_MODE_CONNECTOR_Component, "Component" },
251 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
252 { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
253 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
254 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
255 { DRM_MODE_CONNECTOR_TV, "TV" },
256 { DRM_MODE_CONNECTOR_eDP, "eDP" },
257 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
258 { DRM_MODE_CONNECTOR_DSI, "DSI" },
261 static const struct drm_prop_enum_list drm_encoder_enum_list[] =
262 { { DRM_MODE_ENCODER_NONE, "None" },
263 { DRM_MODE_ENCODER_DAC, "DAC" },
264 { DRM_MODE_ENCODER_TMDS, "TMDS" },
265 { DRM_MODE_ENCODER_LVDS, "LVDS" },
266 { DRM_MODE_ENCODER_TVDAC, "TV" },
267 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
268 { DRM_MODE_ENCODER_DSI, "DSI" },
269 { DRM_MODE_ENCODER_DPMST, "DP MST" },
272 static const struct drm_prop_enum_list drm_subpixel_enum_list[] =
274 { SubPixelUnknown, "Unknown" },
275 { SubPixelHorizontalRGB, "Horizontal RGB" },
276 { SubPixelHorizontalBGR, "Horizontal BGR" },
277 { SubPixelVerticalRGB, "Vertical RGB" },
278 { SubPixelVerticalBGR, "Vertical BGR" },
279 { SubPixelNone, "None" },
282 void drm_connector_ida_init(void)
286 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
287 ida_init(&drm_connector_enum_list[i].ida);
290 void drm_connector_ida_destroy(void)
294 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
295 ida_destroy(&drm_connector_enum_list[i].ida);
299 * drm_get_connector_status_name - return a string for connector status
300 * @status: connector status to compute name of
302 * In contrast to the other drm_get_*_name functions this one here returns a
303 * const pointer and hence is threadsafe.
305 const char *drm_get_connector_status_name(enum drm_connector_status status)
307 if (status == connector_status_connected)
309 else if (status == connector_status_disconnected)
310 return "disconnected";
314 EXPORT_SYMBOL(drm_get_connector_status_name);
317 * drm_get_subpixel_order_name - return a string for a given subpixel enum
318 * @order: enum of subpixel_order
320 * Note you could abuse this and return something out of bounds, but that
321 * would be a caller error. No unscrubbed user data should make it here.
323 const char *drm_get_subpixel_order_name(enum subpixel_order order)
325 return drm_subpixel_enum_list[order].name;
327 EXPORT_SYMBOL(drm_get_subpixel_order_name);
329 static char printable_char(int c)
331 return isascii(c) && isprint(c) ? c : '?';
335 * drm_get_format_name - return a string for drm fourcc format
336 * @format: format to compute name of
338 * Note that the buffer used by this function is globally shared and owned by
339 * the function itself.
341 * FIXME: This isn't really multithreading safe.
343 const char *drm_get_format_name(uint32_t format)
347 snprintf(buf, sizeof(buf),
348 "%c%c%c%c %s-endian (0x%08x)",
349 printable_char(format & 0xff),
350 printable_char((format >> 8) & 0xff),
351 printable_char((format >> 16) & 0xff),
352 printable_char((format >> 24) & 0x7f),
353 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
358 EXPORT_SYMBOL(drm_get_format_name);
361 * drm_mode_object_get - allocate a new modeset identifier
363 * @obj: object pointer, used to generate unique ID
364 * @obj_type: object type
366 * Create a unique identifier based on @ptr in @dev's identifier space. Used
367 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
368 * modeset identifiers are _not_ reference counted. Hence don't use this for
369 * reference counted modeset objects like framebuffers.
372 * New unique (relative to other objects in @dev) integer identifier for the
375 int drm_mode_object_get(struct drm_device *dev,
376 struct drm_mode_object *obj, uint32_t obj_type)
380 mutex_lock(&dev->mode_config.idr_mutex);
381 ret = idr_alloc(&dev->mode_config.crtc_idr, obj, 1, 0, GFP_KERNEL);
384 * Set up the object linking under the protection of the idr
385 * lock so that other users can't see inconsistent state.
388 obj->type = obj_type;
390 mutex_unlock(&dev->mode_config.idr_mutex);
392 return ret < 0 ? ret : 0;
396 * drm_mode_object_put - free a modeset identifer
398 * @object: object to free
400 * Free @id from @dev's unique identifier pool. Note that despite the _get
401 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
402 * for reference counted modeset objects like framebuffers.
404 void drm_mode_object_put(struct drm_device *dev,
405 struct drm_mode_object *object)
407 mutex_lock(&dev->mode_config.idr_mutex);
408 idr_remove(&dev->mode_config.crtc_idr, object->id);
409 mutex_unlock(&dev->mode_config.idr_mutex);
412 static struct drm_mode_object *_object_find(struct drm_device *dev,
413 uint32_t id, uint32_t type)
415 struct drm_mode_object *obj = NULL;
417 mutex_lock(&dev->mode_config.idr_mutex);
418 obj = idr_find(&dev->mode_config.crtc_idr, id);
419 if (!obj || (type != DRM_MODE_OBJECT_ANY && obj->type != type) ||
422 mutex_unlock(&dev->mode_config.idr_mutex);
428 * drm_mode_object_find - look up a drm object with static lifetime
430 * @id: id of the mode object
431 * @type: type of the mode object
433 * Note that framebuffers cannot be looked up with this functions - since those
434 * are reference counted, they need special treatment. Even with
435 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
436 * rather than WARN_ON()).
438 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
439 uint32_t id, uint32_t type)
441 struct drm_mode_object *obj = NULL;
443 /* Framebuffers are reference counted and need their own lookup
445 WARN_ON(type == DRM_MODE_OBJECT_FB);
446 obj = _object_find(dev, id, type);
447 /* don't leak out unref'd fb's */
448 if (obj && (obj->type == DRM_MODE_OBJECT_FB))
452 EXPORT_SYMBOL(drm_mode_object_find);
455 * drm_framebuffer_init - initialize a framebuffer
457 * @fb: framebuffer to be initialized
458 * @funcs: ... with these functions
460 * Allocates an ID for the framebuffer's parent mode object, sets its mode
461 * functions & device file and adds it to the master fd list.
464 * This functions publishes the fb and makes it available for concurrent access
465 * by other users. Which means by this point the fb _must_ be fully set up -
466 * since all the fb attributes are invariant over its lifetime, no further
467 * locking but only correct reference counting is required.
470 * Zero on success, error code on failure.
472 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
473 const struct drm_framebuffer_funcs *funcs)
477 mutex_lock(&dev->mode_config.fb_lock);
478 kref_init(&fb->refcount);
479 INIT_LIST_HEAD(&fb->filp_head);
483 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
487 /* Grab the idr reference. */
488 drm_framebuffer_reference(fb);
490 dev->mode_config.num_fb++;
491 list_add(&fb->head, &dev->mode_config.fb_list);
493 mutex_unlock(&dev->mode_config.fb_lock);
497 EXPORT_SYMBOL(drm_framebuffer_init);
499 static void drm_framebuffer_free(struct kref *kref)
501 struct drm_framebuffer *fb =
502 container_of(kref, struct drm_framebuffer, refcount);
503 fb->funcs->destroy(fb);
506 static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
509 struct drm_mode_object *obj = NULL;
510 struct drm_framebuffer *fb;
512 mutex_lock(&dev->mode_config.idr_mutex);
513 obj = idr_find(&dev->mode_config.crtc_idr, id);
514 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
518 mutex_unlock(&dev->mode_config.idr_mutex);
524 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
526 * @id: id of the fb object
528 * If successful, this grabs an additional reference to the framebuffer -
529 * callers need to make sure to eventually unreference the returned framebuffer
530 * again, using @drm_framebuffer_unreference.
532 struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
535 struct drm_framebuffer *fb;
537 mutex_lock(&dev->mode_config.fb_lock);
538 fb = __drm_framebuffer_lookup(dev, id);
540 drm_framebuffer_reference(fb);
541 mutex_unlock(&dev->mode_config.fb_lock);
545 EXPORT_SYMBOL(drm_framebuffer_lookup);
548 * drm_framebuffer_unreference - unref a framebuffer
549 * @fb: framebuffer to unref
551 * This functions decrements the fb's refcount and frees it if it drops to zero.
553 void drm_framebuffer_unreference(struct drm_framebuffer *fb)
555 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
556 kref_put(&fb->refcount, drm_framebuffer_free);
558 EXPORT_SYMBOL(drm_framebuffer_unreference);
561 * drm_framebuffer_reference - incr the fb refcnt
564 * This functions increments the fb's refcount.
566 void drm_framebuffer_reference(struct drm_framebuffer *fb)
568 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
569 kref_get(&fb->refcount);
571 EXPORT_SYMBOL(drm_framebuffer_reference);
573 static void drm_framebuffer_free_bug(struct kref *kref)
578 static void __drm_framebuffer_unreference(struct drm_framebuffer *fb)
580 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
581 kref_put(&fb->refcount, drm_framebuffer_free_bug);
584 /* dev->mode_config.fb_lock must be held! */
585 static void __drm_framebuffer_unregister(struct drm_device *dev,
586 struct drm_framebuffer *fb)
588 mutex_lock(&dev->mode_config.idr_mutex);
589 idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
590 mutex_unlock(&dev->mode_config.idr_mutex);
594 __drm_framebuffer_unreference(fb);
598 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
599 * @fb: fb to unregister
601 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
602 * those used for fbdev. Note that the caller must hold a reference of it's own,
603 * i.e. the object may not be destroyed through this call (since it'll lead to a
604 * locking inversion).
606 void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
608 struct drm_device *dev = fb->dev;
610 mutex_lock(&dev->mode_config.fb_lock);
611 /* Mark fb as reaped and drop idr ref. */
612 __drm_framebuffer_unregister(dev, fb);
613 mutex_unlock(&dev->mode_config.fb_lock);
615 EXPORT_SYMBOL(drm_framebuffer_unregister_private);
618 * drm_framebuffer_cleanup - remove a framebuffer object
619 * @fb: framebuffer to remove
621 * Cleanup framebuffer. This function is intended to be used from the drivers
622 * ->destroy callback. It can also be used to clean up driver private
623 * framebuffers embedded into a larger structure.
625 * Note that this function does not remove the fb from active usuage - if it is
626 * still used anywhere, hilarity can ensue since userspace could call getfb on
627 * the id and get back -EINVAL. Obviously no concern at driver unload time.
629 * Also, the framebuffer will not be removed from the lookup idr - for
630 * user-created framebuffers this will happen in in the rmfb ioctl. For
631 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
632 * drm_framebuffer_unregister_private.
634 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
636 struct drm_device *dev = fb->dev;
638 mutex_lock(&dev->mode_config.fb_lock);
640 dev->mode_config.num_fb--;
641 mutex_unlock(&dev->mode_config.fb_lock);
643 EXPORT_SYMBOL(drm_framebuffer_cleanup);
646 * drm_framebuffer_remove - remove and unreference a framebuffer object
647 * @fb: framebuffer to remove
649 * Scans all the CRTCs and planes in @dev's mode_config. If they're
650 * using @fb, removes it, setting it to NULL. Then drops the reference to the
651 * passed-in framebuffer. Might take the modeset locks.
653 * Note that this function optimizes the cleanup away if the caller holds the
654 * last reference to the framebuffer. It is also guaranteed to not take the
655 * modeset locks in this case.
657 void drm_framebuffer_remove(struct drm_framebuffer *fb)
659 struct drm_device *dev = fb->dev;
660 struct drm_crtc *crtc;
661 struct drm_plane *plane;
662 struct drm_mode_set set;
665 WARN_ON(!list_empty(&fb->filp_head));
668 * drm ABI mandates that we remove any deleted framebuffers from active
669 * useage. But since most sane clients only remove framebuffers they no
670 * longer need, try to optimize this away.
672 * Since we're holding a reference ourselves, observing a refcount of 1
673 * means that we're the last holder and can skip it. Also, the refcount
674 * can never increase from 1 again, so we don't need any barriers or
677 * Note that userspace could try to race with use and instate a new
678 * usage _after_ we've cleared all current ones. End result will be an
679 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
682 if (atomic_read(&fb->refcount.refcount) > 1) {
683 drm_modeset_lock_all(dev);
684 /* remove from any CRTC */
685 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
686 if (crtc->primary->fb == fb) {
687 /* should turn off the crtc */
688 memset(&set, 0, sizeof(struct drm_mode_set));
691 ret = drm_mode_set_config_internal(&set);
693 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
697 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
699 drm_plane_force_disable(plane);
701 drm_modeset_unlock_all(dev);
704 drm_framebuffer_unreference(fb);
706 EXPORT_SYMBOL(drm_framebuffer_remove);
708 DEFINE_WW_CLASS(crtc_ww_class);
711 * drm_crtc_init_with_planes - Initialise a new CRTC object with
712 * specified primary and cursor planes.
714 * @crtc: CRTC object to init
715 * @primary: Primary plane for CRTC
716 * @cursor: Cursor plane for CRTC
717 * @funcs: callbacks for the new CRTC
719 * Inits a new object created as base part of a driver crtc object.
722 * Zero on success, error code on failure.
724 int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
725 struct drm_plane *primary,
727 const struct drm_crtc_funcs *funcs)
729 struct drm_mode_config *config = &dev->mode_config;
734 crtc->invert_dimensions = false;
736 drm_modeset_lock_all(dev);
737 drm_modeset_lock_init(&crtc->mutex);
738 /* dropped by _unlock_all(): */
739 drm_modeset_lock(&crtc->mutex, config->acquire_ctx);
741 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
745 crtc->base.properties = &crtc->properties;
747 list_add_tail(&crtc->head, &config->crtc_list);
750 crtc->primary = primary;
752 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
755 drm_modeset_unlock_all(dev);
759 EXPORT_SYMBOL(drm_crtc_init_with_planes);
762 * drm_crtc_cleanup - Clean up the core crtc usage
763 * @crtc: CRTC to cleanup
765 * This function cleans up @crtc and removes it from the DRM mode setting
766 * core. Note that the function does *not* free the crtc structure itself,
767 * this is the responsibility of the caller.
769 void drm_crtc_cleanup(struct drm_crtc *crtc)
771 struct drm_device *dev = crtc->dev;
773 kfree(crtc->gamma_store);
774 crtc->gamma_store = NULL;
776 drm_modeset_lock_fini(&crtc->mutex);
778 drm_mode_object_put(dev, &crtc->base);
779 list_del(&crtc->head);
780 dev->mode_config.num_crtc--;
782 EXPORT_SYMBOL(drm_crtc_cleanup);
785 * drm_crtc_index - find the index of a registered CRTC
786 * @crtc: CRTC to find index for
788 * Given a registered CRTC, return the index of that CRTC within a DRM
789 * device's list of CRTCs.
791 unsigned int drm_crtc_index(struct drm_crtc *crtc)
793 unsigned int index = 0;
794 struct drm_crtc *tmp;
796 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
805 EXPORT_SYMBOL(drm_crtc_index);
808 * drm_mode_remove - remove and free a mode
809 * @connector: connector list to modify
810 * @mode: mode to remove
812 * Remove @mode from @connector's mode list, then free it.
814 static void drm_mode_remove(struct drm_connector *connector,
815 struct drm_display_mode *mode)
817 list_del(&mode->head);
818 drm_mode_destroy(connector->dev, mode);
822 * drm_connector_init - Init a preallocated connector
824 * @connector: the connector to init
825 * @funcs: callbacks for this connector
826 * @connector_type: user visible type of the connector
828 * Initialises a preallocated connector. Connectors should be
829 * subclassed as part of driver connector objects.
832 * Zero on success, error code on failure.
834 int drm_connector_init(struct drm_device *dev,
835 struct drm_connector *connector,
836 const struct drm_connector_funcs *funcs,
840 struct ida *connector_ida =
841 &drm_connector_enum_list[connector_type].ida;
843 drm_modeset_lock_all(dev);
845 ret = drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
849 connector->base.properties = &connector->properties;
850 connector->dev = dev;
851 connector->funcs = funcs;
852 connector->connector_type = connector_type;
853 connector->connector_type_id =
854 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
855 if (connector->connector_type_id < 0) {
856 ret = connector->connector_type_id;
860 kasprintf(GFP_KERNEL, "%s-%d",
861 drm_connector_enum_list[connector_type].name,
862 connector->connector_type_id);
863 if (!connector->name) {
868 INIT_LIST_HEAD(&connector->probed_modes);
869 INIT_LIST_HEAD(&connector->modes);
870 connector->edid_blob_ptr = NULL;
871 connector->status = connector_status_unknown;
873 list_add_tail(&connector->head, &dev->mode_config.connector_list);
874 dev->mode_config.num_connector++;
876 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
877 drm_object_attach_property(&connector->base,
878 dev->mode_config.edid_property,
881 drm_object_attach_property(&connector->base,
882 dev->mode_config.dpms_property, 0);
886 drm_mode_object_put(dev, &connector->base);
889 drm_modeset_unlock_all(dev);
893 EXPORT_SYMBOL(drm_connector_init);
896 * drm_connector_cleanup - cleans up an initialised connector
897 * @connector: connector to cleanup
899 * Cleans up the connector but doesn't free the object.
901 void drm_connector_cleanup(struct drm_connector *connector)
903 struct drm_device *dev = connector->dev;
904 struct drm_display_mode *mode, *t;
906 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
907 drm_mode_remove(connector, mode);
909 list_for_each_entry_safe(mode, t, &connector->modes, head)
910 drm_mode_remove(connector, mode);
912 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
913 connector->connector_type_id);
915 drm_mode_object_put(dev, &connector->base);
916 kfree(connector->name);
917 connector->name = NULL;
918 list_del(&connector->head);
919 dev->mode_config.num_connector--;
921 EXPORT_SYMBOL(drm_connector_cleanup);
924 * drm_connector_unplug_all - unregister connector userspace interfaces
927 * This function unregisters all connector userspace interfaces in sysfs. Should
928 * be call when the device is disconnected, e.g. from an usb driver's
929 * ->disconnect callback.
931 void drm_connector_unplug_all(struct drm_device *dev)
933 struct drm_connector *connector;
935 /* taking the mode config mutex ends up in a clash with sysfs */
936 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
937 drm_sysfs_connector_remove(connector);
940 EXPORT_SYMBOL(drm_connector_unplug_all);
943 * drm_bridge_init - initialize a drm transcoder/bridge
945 * @bridge: transcoder/bridge to set up
946 * @funcs: bridge function table
948 * Initialises a preallocated bridge. Bridges should be
949 * subclassed as part of driver connector objects.
952 * Zero on success, error code on failure.
954 int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
955 const struct drm_bridge_funcs *funcs)
959 drm_modeset_lock_all(dev);
961 ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
966 bridge->funcs = funcs;
968 list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
969 dev->mode_config.num_bridge++;
972 drm_modeset_unlock_all(dev);
975 EXPORT_SYMBOL(drm_bridge_init);
978 * drm_bridge_cleanup - cleans up an initialised bridge
979 * @bridge: bridge to cleanup
981 * Cleans up the bridge but doesn't free the object.
983 void drm_bridge_cleanup(struct drm_bridge *bridge)
985 struct drm_device *dev = bridge->dev;
987 drm_modeset_lock_all(dev);
988 drm_mode_object_put(dev, &bridge->base);
989 list_del(&bridge->head);
990 dev->mode_config.num_bridge--;
991 drm_modeset_unlock_all(dev);
993 EXPORT_SYMBOL(drm_bridge_cleanup);
996 * drm_encoder_init - Init a preallocated encoder
998 * @encoder: the encoder to init
999 * @funcs: callbacks for this encoder
1000 * @encoder_type: user visible type of the encoder
1002 * Initialises a preallocated encoder. Encoder should be
1003 * subclassed as part of driver encoder objects.
1006 * Zero on success, error code on failure.
1008 int drm_encoder_init(struct drm_device *dev,
1009 struct drm_encoder *encoder,
1010 const struct drm_encoder_funcs *funcs,
1015 drm_modeset_lock_all(dev);
1017 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1022 encoder->encoder_type = encoder_type;
1023 encoder->funcs = funcs;
1024 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1025 drm_encoder_enum_list[encoder_type].name,
1027 if (!encoder->name) {
1032 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1033 dev->mode_config.num_encoder++;
1037 drm_mode_object_put(dev, &encoder->base);
1040 drm_modeset_unlock_all(dev);
1044 EXPORT_SYMBOL(drm_encoder_init);
1047 * drm_encoder_cleanup - cleans up an initialised encoder
1048 * @encoder: encoder to cleanup
1050 * Cleans up the encoder but doesn't free the object.
1052 void drm_encoder_cleanup(struct drm_encoder *encoder)
1054 struct drm_device *dev = encoder->dev;
1055 drm_modeset_lock_all(dev);
1056 drm_mode_object_put(dev, &encoder->base);
1057 kfree(encoder->name);
1058 encoder->name = NULL;
1059 list_del(&encoder->head);
1060 dev->mode_config.num_encoder--;
1061 drm_modeset_unlock_all(dev);
1063 EXPORT_SYMBOL(drm_encoder_cleanup);
1066 * drm_universal_plane_init - Initialize a new universal plane object
1068 * @plane: plane object to init
1069 * @possible_crtcs: bitmask of possible CRTCs
1070 * @funcs: callbacks for the new plane
1071 * @formats: array of supported formats (%DRM_FORMAT_*)
1072 * @format_count: number of elements in @formats
1073 * @type: type of plane (overlay, primary, cursor)
1075 * Initializes a plane object of type @type.
1078 * Zero on success, error code on failure.
1080 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1081 unsigned long possible_crtcs,
1082 const struct drm_plane_funcs *funcs,
1083 const uint32_t *formats, uint32_t format_count,
1084 enum drm_plane_type type)
1088 drm_modeset_lock_all(dev);
1090 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1094 plane->base.properties = &plane->properties;
1096 plane->funcs = funcs;
1097 plane->format_types = kmalloc(sizeof(uint32_t) * format_count,
1099 if (!plane->format_types) {
1100 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1101 drm_mode_object_put(dev, &plane->base);
1106 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1107 plane->format_count = format_count;
1108 plane->possible_crtcs = possible_crtcs;
1111 list_add_tail(&plane->head, &dev->mode_config.plane_list);
1112 dev->mode_config.num_total_plane++;
1113 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1114 dev->mode_config.num_overlay_plane++;
1116 drm_object_attach_property(&plane->base,
1117 dev->mode_config.plane_type_property,
1121 drm_modeset_unlock_all(dev);
1125 EXPORT_SYMBOL(drm_universal_plane_init);
1128 * drm_plane_init - Initialize a legacy plane
1130 * @plane: plane object to init
1131 * @possible_crtcs: bitmask of possible CRTCs
1132 * @funcs: callbacks for the new plane
1133 * @formats: array of supported formats (%DRM_FORMAT_*)
1134 * @format_count: number of elements in @formats
1135 * @is_primary: plane type (primary vs overlay)
1137 * Legacy API to initialize a DRM plane.
1139 * New drivers should call drm_universal_plane_init() instead.
1142 * Zero on success, error code on failure.
1144 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1145 unsigned long possible_crtcs,
1146 const struct drm_plane_funcs *funcs,
1147 const uint32_t *formats, uint32_t format_count,
1150 enum drm_plane_type type;
1152 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1153 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1154 formats, format_count, type);
1156 EXPORT_SYMBOL(drm_plane_init);
1159 * drm_plane_cleanup - Clean up the core plane usage
1160 * @plane: plane to cleanup
1162 * This function cleans up @plane and removes it from the DRM mode setting
1163 * core. Note that the function does *not* free the plane structure itself,
1164 * this is the responsibility of the caller.
1166 void drm_plane_cleanup(struct drm_plane *plane)
1168 struct drm_device *dev = plane->dev;
1170 drm_modeset_lock_all(dev);
1171 kfree(plane->format_types);
1172 drm_mode_object_put(dev, &plane->base);
1174 BUG_ON(list_empty(&plane->head));
1176 list_del(&plane->head);
1177 dev->mode_config.num_total_plane--;
1178 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1179 dev->mode_config.num_overlay_plane--;
1180 drm_modeset_unlock_all(dev);
1182 EXPORT_SYMBOL(drm_plane_cleanup);
1185 * drm_plane_force_disable - Forcibly disable a plane
1186 * @plane: plane to disable
1188 * Forces the plane to be disabled.
1190 * Used when the plane's current framebuffer is destroyed,
1191 * and when restoring fbdev mode.
1193 void drm_plane_force_disable(struct drm_plane *plane)
1195 struct drm_framebuffer *old_fb = plane->fb;
1201 ret = plane->funcs->disable_plane(plane);
1203 DRM_ERROR("failed to disable plane with busy fb\n");
1206 /* disconnect the plane from the fb and crtc: */
1207 __drm_framebuffer_unreference(old_fb);
1211 EXPORT_SYMBOL(drm_plane_force_disable);
1213 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
1215 struct drm_property *edid;
1216 struct drm_property *dpms;
1219 * Standard properties (apply to all connectors)
1221 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1222 DRM_MODE_PROP_IMMUTABLE,
1224 dev->mode_config.edid_property = edid;
1226 dpms = drm_property_create_enum(dev, 0,
1227 "DPMS", drm_dpms_enum_list,
1228 ARRAY_SIZE(drm_dpms_enum_list));
1229 dev->mode_config.dpms_property = dpms;
1234 static int drm_mode_create_standard_plane_properties(struct drm_device *dev)
1236 struct drm_property *type;
1239 * Standard properties (apply to all planes)
1241 type = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1242 "type", drm_plane_type_enum_list,
1243 ARRAY_SIZE(drm_plane_type_enum_list));
1244 dev->mode_config.plane_type_property = type;
1250 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1253 * Called by a driver the first time a DVI-I connector is made.
1255 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1257 struct drm_property *dvi_i_selector;
1258 struct drm_property *dvi_i_subconnector;
1260 if (dev->mode_config.dvi_i_select_subconnector_property)
1264 drm_property_create_enum(dev, 0,
1265 "select subconnector",
1266 drm_dvi_i_select_enum_list,
1267 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1268 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1270 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1272 drm_dvi_i_subconnector_enum_list,
1273 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1274 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1278 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1281 * drm_create_tv_properties - create TV specific connector properties
1283 * @num_modes: number of different TV formats (modes) supported
1284 * @modes: array of pointers to strings containing name of each format
1286 * Called by a driver's TV initialization routine, this function creates
1287 * the TV specific connector properties for a given device. Caller is
1288 * responsible for allocating a list of format names and passing them to
1291 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
1294 struct drm_property *tv_selector;
1295 struct drm_property *tv_subconnector;
1298 if (dev->mode_config.tv_select_subconnector_property)
1302 * Basic connector properties
1304 tv_selector = drm_property_create_enum(dev, 0,
1305 "select subconnector",
1306 drm_tv_select_enum_list,
1307 ARRAY_SIZE(drm_tv_select_enum_list));
1308 dev->mode_config.tv_select_subconnector_property = tv_selector;
1311 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1313 drm_tv_subconnector_enum_list,
1314 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1315 dev->mode_config.tv_subconnector_property = tv_subconnector;
1318 * Other, TV specific properties: margins & TV modes.
1320 dev->mode_config.tv_left_margin_property =
1321 drm_property_create_range(dev, 0, "left margin", 0, 100);
1323 dev->mode_config.tv_right_margin_property =
1324 drm_property_create_range(dev, 0, "right margin", 0, 100);
1326 dev->mode_config.tv_top_margin_property =
1327 drm_property_create_range(dev, 0, "top margin", 0, 100);
1329 dev->mode_config.tv_bottom_margin_property =
1330 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1332 dev->mode_config.tv_mode_property =
1333 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1335 for (i = 0; i < num_modes; i++)
1336 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1339 dev->mode_config.tv_brightness_property =
1340 drm_property_create_range(dev, 0, "brightness", 0, 100);
1342 dev->mode_config.tv_contrast_property =
1343 drm_property_create_range(dev, 0, "contrast", 0, 100);
1345 dev->mode_config.tv_flicker_reduction_property =
1346 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1348 dev->mode_config.tv_overscan_property =
1349 drm_property_create_range(dev, 0, "overscan", 0, 100);
1351 dev->mode_config.tv_saturation_property =
1352 drm_property_create_range(dev, 0, "saturation", 0, 100);
1354 dev->mode_config.tv_hue_property =
1355 drm_property_create_range(dev, 0, "hue", 0, 100);
1359 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1362 * drm_mode_create_scaling_mode_property - create scaling mode property
1365 * Called by a driver the first time it's needed, must be attached to desired
1368 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1370 struct drm_property *scaling_mode;
1372 if (dev->mode_config.scaling_mode_property)
1376 drm_property_create_enum(dev, 0, "scaling mode",
1377 drm_scaling_mode_enum_list,
1378 ARRAY_SIZE(drm_scaling_mode_enum_list));
1380 dev->mode_config.scaling_mode_property = scaling_mode;
1384 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1387 * drm_mode_create_dirty_property - create dirty property
1390 * Called by a driver the first time it's needed, must be attached to desired
1393 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1395 struct drm_property *dirty_info;
1397 if (dev->mode_config.dirty_info_property)
1401 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1403 drm_dirty_info_enum_list,
1404 ARRAY_SIZE(drm_dirty_info_enum_list));
1405 dev->mode_config.dirty_info_property = dirty_info;
1409 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1411 static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
1413 uint32_t total_objects = 0;
1415 total_objects += dev->mode_config.num_crtc;
1416 total_objects += dev->mode_config.num_connector;
1417 total_objects += dev->mode_config.num_encoder;
1418 total_objects += dev->mode_config.num_bridge;
1420 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
1421 if (!group->id_list)
1424 group->num_crtcs = 0;
1425 group->num_connectors = 0;
1426 group->num_encoders = 0;
1427 group->num_bridges = 0;
1431 void drm_mode_group_destroy(struct drm_mode_group *group)
1433 kfree(group->id_list);
1434 group->id_list = NULL;
1438 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1439 * the drm core's responsibility to set up mode control groups.
1441 int drm_mode_group_init_legacy_group(struct drm_device *dev,
1442 struct drm_mode_group *group)
1444 struct drm_crtc *crtc;
1445 struct drm_encoder *encoder;
1446 struct drm_connector *connector;
1447 struct drm_bridge *bridge;
1450 if ((ret = drm_mode_group_init(dev, group)))
1453 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1454 group->id_list[group->num_crtcs++] = crtc->base.id;
1456 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1457 group->id_list[group->num_crtcs + group->num_encoders++] =
1460 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1461 group->id_list[group->num_crtcs + group->num_encoders +
1462 group->num_connectors++] = connector->base.id;
1464 list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
1465 group->id_list[group->num_crtcs + group->num_encoders +
1466 group->num_connectors + group->num_bridges++] =
1471 EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
1474 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1475 * @out: drm_mode_modeinfo struct to return to the user
1476 * @in: drm_display_mode to use
1478 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1481 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1482 const struct drm_display_mode *in)
1484 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1485 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1486 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1487 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1488 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1489 "timing values too large for mode info\n");
1491 out->clock = in->clock;
1492 out->hdisplay = in->hdisplay;
1493 out->hsync_start = in->hsync_start;
1494 out->hsync_end = in->hsync_end;
1495 out->htotal = in->htotal;
1496 out->hskew = in->hskew;
1497 out->vdisplay = in->vdisplay;
1498 out->vsync_start = in->vsync_start;
1499 out->vsync_end = in->vsync_end;
1500 out->vtotal = in->vtotal;
1501 out->vscan = in->vscan;
1502 out->vrefresh = in->vrefresh;
1503 out->flags = in->flags;
1504 out->type = in->type;
1505 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1506 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1510 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1511 * @out: drm_display_mode to return to the user
1512 * @in: drm_mode_modeinfo to use
1514 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1518 * Zero on success, errno on failure.
1520 static int drm_crtc_convert_umode(struct drm_display_mode *out,
1521 const struct drm_mode_modeinfo *in)
1523 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1526 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1529 out->clock = in->clock;
1530 out->hdisplay = in->hdisplay;
1531 out->hsync_start = in->hsync_start;
1532 out->hsync_end = in->hsync_end;
1533 out->htotal = in->htotal;
1534 out->hskew = in->hskew;
1535 out->vdisplay = in->vdisplay;
1536 out->vsync_start = in->vsync_start;
1537 out->vsync_end = in->vsync_end;
1538 out->vtotal = in->vtotal;
1539 out->vscan = in->vscan;
1540 out->vrefresh = in->vrefresh;
1541 out->flags = in->flags;
1542 out->type = in->type;
1543 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1544 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1550 * drm_mode_getresources - get graphics configuration
1551 * @dev: drm device for the ioctl
1552 * @data: data pointer for the ioctl
1553 * @file_priv: drm file for the ioctl call
1555 * Construct a set of configuration description structures and return
1556 * them to the user, including CRTC, connector and framebuffer configuration.
1558 * Called by the user via ioctl.
1561 * Zero on success, errno on failure.
1563 int drm_mode_getresources(struct drm_device *dev, void *data,
1564 struct drm_file *file_priv)
1566 struct drm_mode_card_res *card_res = data;
1567 struct list_head *lh;
1568 struct drm_framebuffer *fb;
1569 struct drm_connector *connector;
1570 struct drm_crtc *crtc;
1571 struct drm_encoder *encoder;
1573 int connector_count = 0;
1576 int encoder_count = 0;
1578 uint32_t __user *fb_id;
1579 uint32_t __user *crtc_id;
1580 uint32_t __user *connector_id;
1581 uint32_t __user *encoder_id;
1582 struct drm_mode_group *mode_group;
1584 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1588 mutex_lock(&file_priv->fbs_lock);
1590 * For the non-control nodes we need to limit the list of resources
1591 * by IDs in the group list for this node
1593 list_for_each(lh, &file_priv->fbs)
1596 /* handle this in 4 parts */
1598 if (card_res->count_fbs >= fb_count) {
1600 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1601 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1602 if (put_user(fb->base.id, fb_id + copied)) {
1603 mutex_unlock(&file_priv->fbs_lock);
1609 card_res->count_fbs = fb_count;
1610 mutex_unlock(&file_priv->fbs_lock);
1612 drm_modeset_lock_all(dev);
1613 if (!drm_is_primary_client(file_priv)) {
1616 list_for_each(lh, &dev->mode_config.crtc_list)
1619 list_for_each(lh, &dev->mode_config.connector_list)
1622 list_for_each(lh, &dev->mode_config.encoder_list)
1626 mode_group = &file_priv->master->minor->mode_group;
1627 crtc_count = mode_group->num_crtcs;
1628 connector_count = mode_group->num_connectors;
1629 encoder_count = mode_group->num_encoders;
1632 card_res->max_height = dev->mode_config.max_height;
1633 card_res->min_height = dev->mode_config.min_height;
1634 card_res->max_width = dev->mode_config.max_width;
1635 card_res->min_width = dev->mode_config.min_width;
1638 if (card_res->count_crtcs >= crtc_count) {
1640 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1642 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1644 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1645 if (put_user(crtc->base.id, crtc_id + copied)) {
1652 for (i = 0; i < mode_group->num_crtcs; i++) {
1653 if (put_user(mode_group->id_list[i],
1654 crtc_id + copied)) {
1662 card_res->count_crtcs = crtc_count;
1665 if (card_res->count_encoders >= encoder_count) {
1667 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1669 list_for_each_entry(encoder,
1670 &dev->mode_config.encoder_list,
1672 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1674 if (put_user(encoder->base.id, encoder_id +
1682 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1683 if (put_user(mode_group->id_list[i],
1684 encoder_id + copied)) {
1693 card_res->count_encoders = encoder_count;
1696 if (card_res->count_connectors >= connector_count) {
1698 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1700 list_for_each_entry(connector,
1701 &dev->mode_config.connector_list,
1703 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1706 if (put_user(connector->base.id,
1707 connector_id + copied)) {
1714 int start = mode_group->num_crtcs +
1715 mode_group->num_encoders;
1716 for (i = start; i < start + mode_group->num_connectors; i++) {
1717 if (put_user(mode_group->id_list[i],
1718 connector_id + copied)) {
1726 card_res->count_connectors = connector_count;
1728 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1729 card_res->count_connectors, card_res->count_encoders);
1732 drm_modeset_unlock_all(dev);
1737 * drm_mode_getcrtc - get CRTC configuration
1738 * @dev: drm device for the ioctl
1739 * @data: data pointer for the ioctl
1740 * @file_priv: drm file for the ioctl call
1742 * Construct a CRTC configuration structure to return to the user.
1744 * Called by the user via ioctl.
1747 * Zero on success, errno on failure.
1749 int drm_mode_getcrtc(struct drm_device *dev,
1750 void *data, struct drm_file *file_priv)
1752 struct drm_mode_crtc *crtc_resp = data;
1753 struct drm_crtc *crtc;
1756 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1759 drm_modeset_lock_all(dev);
1761 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
1767 crtc_resp->x = crtc->x;
1768 crtc_resp->y = crtc->y;
1769 crtc_resp->gamma_size = crtc->gamma_size;
1770 if (crtc->primary->fb)
1771 crtc_resp->fb_id = crtc->primary->fb->base.id;
1773 crtc_resp->fb_id = 0;
1775 if (crtc->enabled) {
1777 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1778 crtc_resp->mode_valid = 1;
1781 crtc_resp->mode_valid = 0;
1785 drm_modeset_unlock_all(dev);
1789 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1790 const struct drm_file *file_priv)
1793 * If user-space hasn't configured the driver to expose the stereo 3D
1794 * modes, don't expose them.
1796 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1803 * drm_mode_getconnector - get connector configuration
1804 * @dev: drm device for the ioctl
1805 * @data: data pointer for the ioctl
1806 * @file_priv: drm file for the ioctl call
1808 * Construct a connector configuration structure to return to the user.
1810 * Called by the user via ioctl.
1813 * Zero on success, errno on failure.
1815 int drm_mode_getconnector(struct drm_device *dev, void *data,
1816 struct drm_file *file_priv)
1818 struct drm_mode_get_connector *out_resp = data;
1819 struct drm_connector *connector;
1820 struct drm_display_mode *mode;
1822 int props_count = 0;
1823 int encoders_count = 0;
1827 struct drm_mode_modeinfo u_mode;
1828 struct drm_mode_modeinfo __user *mode_ptr;
1829 uint32_t __user *prop_ptr;
1830 uint64_t __user *prop_values;
1831 uint32_t __user *encoder_ptr;
1833 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1836 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1838 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1840 mutex_lock(&dev->mode_config.mutex);
1842 connector = drm_connector_find(dev, out_resp->connector_id);
1848 props_count = connector->properties.count;
1850 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1851 if (connector->encoder_ids[i] != 0) {
1856 if (out_resp->count_modes == 0) {
1857 connector->funcs->fill_modes(connector,
1858 dev->mode_config.max_width,
1859 dev->mode_config.max_height);
1862 /* delayed so we get modes regardless of pre-fill_modes state */
1863 list_for_each_entry(mode, &connector->modes, head)
1864 if (drm_mode_expose_to_userspace(mode, file_priv))
1867 out_resp->connector_id = connector->base.id;
1868 out_resp->connector_type = connector->connector_type;
1869 out_resp->connector_type_id = connector->connector_type_id;
1870 out_resp->mm_width = connector->display_info.width_mm;
1871 out_resp->mm_height = connector->display_info.height_mm;
1872 out_resp->subpixel = connector->display_info.subpixel_order;
1873 out_resp->connection = connector->status;
1874 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
1875 if (connector->encoder)
1876 out_resp->encoder_id = connector->encoder->base.id;
1878 out_resp->encoder_id = 0;
1879 drm_modeset_unlock(&dev->mode_config.connection_mutex);
1882 * This ioctl is called twice, once to determine how much space is
1883 * needed, and the 2nd time to fill it.
1885 if ((out_resp->count_modes >= mode_count) && mode_count) {
1887 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
1888 list_for_each_entry(mode, &connector->modes, head) {
1889 if (!drm_mode_expose_to_userspace(mode, file_priv))
1892 drm_crtc_convert_to_umode(&u_mode, mode);
1893 if (copy_to_user(mode_ptr + copied,
1894 &u_mode, sizeof(u_mode))) {
1901 out_resp->count_modes = mode_count;
1903 if ((out_resp->count_props >= props_count) && props_count) {
1905 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
1906 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
1907 for (i = 0; i < connector->properties.count; i++) {
1908 if (put_user(connector->properties.ids[i],
1909 prop_ptr + copied)) {
1914 if (put_user(connector->properties.values[i],
1915 prop_values + copied)) {
1922 out_resp->count_props = props_count;
1924 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1926 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
1927 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1928 if (connector->encoder_ids[i] != 0) {
1929 if (put_user(connector->encoder_ids[i],
1930 encoder_ptr + copied)) {
1938 out_resp->count_encoders = encoders_count;
1941 mutex_unlock(&dev->mode_config.mutex);
1947 * drm_mode_getencoder - get encoder configuration
1948 * @dev: drm device for the ioctl
1949 * @data: data pointer for the ioctl
1950 * @file_priv: drm file for the ioctl call
1952 * Construct a encoder configuration structure to return to the user.
1954 * Called by the user via ioctl.
1957 * Zero on success, errno on failure.
1959 int drm_mode_getencoder(struct drm_device *dev, void *data,
1960 struct drm_file *file_priv)
1962 struct drm_mode_get_encoder *enc_resp = data;
1963 struct drm_encoder *encoder;
1966 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1969 drm_modeset_lock_all(dev);
1970 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
1977 enc_resp->crtc_id = encoder->crtc->base.id;
1979 enc_resp->crtc_id = 0;
1980 enc_resp->encoder_type = encoder->encoder_type;
1981 enc_resp->encoder_id = encoder->base.id;
1982 enc_resp->possible_crtcs = encoder->possible_crtcs;
1983 enc_resp->possible_clones = encoder->possible_clones;
1986 drm_modeset_unlock_all(dev);
1991 * drm_mode_getplane_res - enumerate all plane resources
1994 * @file_priv: DRM file info
1996 * Construct a list of plane ids to return to the user.
1998 * Called by the user via ioctl.
2001 * Zero on success, errno on failure.
2003 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2004 struct drm_file *file_priv)
2006 struct drm_mode_get_plane_res *plane_resp = data;
2007 struct drm_mode_config *config;
2008 struct drm_plane *plane;
2009 uint32_t __user *plane_ptr;
2010 int copied = 0, ret = 0;
2011 unsigned num_planes;
2013 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2016 drm_modeset_lock_all(dev);
2017 config = &dev->mode_config;
2019 if (file_priv->universal_planes)
2020 num_planes = config->num_total_plane;
2022 num_planes = config->num_overlay_plane;
2025 * This ioctl is called twice, once to determine how much space is
2026 * needed, and the 2nd time to fill it.
2029 (plane_resp->count_planes >= num_planes)) {
2030 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2032 list_for_each_entry(plane, &config->plane_list, head) {
2034 * Unless userspace set the 'universal planes'
2035 * capability bit, only advertise overlays.
2037 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2038 !file_priv->universal_planes)
2041 if (put_user(plane->base.id, plane_ptr + copied)) {
2048 plane_resp->count_planes = num_planes;
2051 drm_modeset_unlock_all(dev);
2056 * drm_mode_getplane - get plane configuration
2059 * @file_priv: DRM file info
2061 * Construct a plane configuration structure to return to the user.
2063 * Called by the user via ioctl.
2066 * Zero on success, errno on failure.
2068 int drm_mode_getplane(struct drm_device *dev, void *data,
2069 struct drm_file *file_priv)
2071 struct drm_mode_get_plane *plane_resp = data;
2072 struct drm_plane *plane;
2073 uint32_t __user *format_ptr;
2076 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2079 drm_modeset_lock_all(dev);
2080 plane = drm_plane_find(dev, plane_resp->plane_id);
2087 plane_resp->crtc_id = plane->crtc->base.id;
2089 plane_resp->crtc_id = 0;
2092 plane_resp->fb_id = plane->fb->base.id;
2094 plane_resp->fb_id = 0;
2096 plane_resp->plane_id = plane->base.id;
2097 plane_resp->possible_crtcs = plane->possible_crtcs;
2098 plane_resp->gamma_size = 0;
2101 * This ioctl is called twice, once to determine how much space is
2102 * needed, and the 2nd time to fill it.
2104 if (plane->format_count &&
2105 (plane_resp->count_format_types >= plane->format_count)) {
2106 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2107 if (copy_to_user(format_ptr,
2108 plane->format_types,
2109 sizeof(uint32_t) * plane->format_count)) {
2114 plane_resp->count_format_types = plane->format_count;
2117 drm_modeset_unlock_all(dev);
2122 * drm_mode_setplane - configure a plane's configuration
2124 * @data: ioctl data*
2125 * @file_priv: DRM file info
2127 * Set plane configuration, including placement, fb, scaling, and other factors.
2128 * Or pass a NULL fb to disable.
2131 * Zero on success, errno on failure.
2133 int drm_mode_setplane(struct drm_device *dev, void *data,
2134 struct drm_file *file_priv)
2136 struct drm_mode_set_plane *plane_req = data;
2137 struct drm_plane *plane;
2138 struct drm_crtc *crtc;
2139 struct drm_framebuffer *fb = NULL, *old_fb = NULL;
2141 unsigned int fb_width, fb_height;
2144 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2148 * First, find the plane, crtc, and fb objects. If not available,
2149 * we don't bother to call the driver.
2151 plane = drm_plane_find(dev, plane_req->plane_id);
2153 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2154 plane_req->plane_id);
2158 /* No fb means shut it down */
2159 if (!plane_req->fb_id) {
2160 drm_modeset_lock_all(dev);
2162 ret = plane->funcs->disable_plane(plane);
2169 drm_modeset_unlock_all(dev);
2173 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2175 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2176 plane_req->crtc_id);
2181 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2183 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2189 /* Check whether this plane supports the fb pixel format. */
2190 for (i = 0; i < plane->format_count; i++)
2191 if (fb->pixel_format == plane->format_types[i])
2193 if (i == plane->format_count) {
2194 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2195 drm_get_format_name(fb->pixel_format));
2200 fb_width = fb->width << 16;
2201 fb_height = fb->height << 16;
2203 /* Make sure source coordinates are inside the fb. */
2204 if (plane_req->src_w > fb_width ||
2205 plane_req->src_x > fb_width - plane_req->src_w ||
2206 plane_req->src_h > fb_height ||
2207 plane_req->src_y > fb_height - plane_req->src_h) {
2208 DRM_DEBUG_KMS("Invalid source coordinates "
2209 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2210 plane_req->src_w >> 16,
2211 ((plane_req->src_w & 0xffff) * 15625) >> 10,
2212 plane_req->src_h >> 16,
2213 ((plane_req->src_h & 0xffff) * 15625) >> 10,
2214 plane_req->src_x >> 16,
2215 ((plane_req->src_x & 0xffff) * 15625) >> 10,
2216 plane_req->src_y >> 16,
2217 ((plane_req->src_y & 0xffff) * 15625) >> 10);
2222 /* Give drivers some help against integer overflows */
2223 if (plane_req->crtc_w > INT_MAX ||
2224 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2225 plane_req->crtc_h > INT_MAX ||
2226 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2227 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2228 plane_req->crtc_w, plane_req->crtc_h,
2229 plane_req->crtc_x, plane_req->crtc_y);
2234 drm_modeset_lock_all(dev);
2236 ret = plane->funcs->update_plane(plane, crtc, fb,
2237 plane_req->crtc_x, plane_req->crtc_y,
2238 plane_req->crtc_w, plane_req->crtc_h,
2239 plane_req->src_x, plane_req->src_y,
2240 plane_req->src_w, plane_req->src_h);
2248 drm_modeset_unlock_all(dev);
2252 drm_framebuffer_unreference(fb);
2254 drm_framebuffer_unreference(old_fb);
2260 * drm_mode_set_config_internal - helper to call ->set_config
2261 * @set: modeset config to set
2263 * This is a little helper to wrap internal calls to the ->set_config driver
2264 * interface. The only thing it adds is correct refcounting dance.
2267 * Zero on success, errno on failure.
2269 int drm_mode_set_config_internal(struct drm_mode_set *set)
2271 struct drm_crtc *crtc = set->crtc;
2272 struct drm_framebuffer *fb;
2273 struct drm_crtc *tmp;
2277 * NOTE: ->set_config can also disable other crtcs (if we steal all
2278 * connectors from it), hence we need to refcount the fbs across all
2279 * crtcs. Atomic modeset will have saner semantics ...
2281 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
2282 tmp->old_fb = tmp->primary->fb;
2286 ret = crtc->funcs->set_config(set);
2288 crtc->primary->crtc = crtc;
2289 crtc->primary->fb = fb;
2292 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
2293 if (tmp->primary->fb)
2294 drm_framebuffer_reference(tmp->primary->fb);
2296 drm_framebuffer_unreference(tmp->old_fb);
2301 EXPORT_SYMBOL(drm_mode_set_config_internal);
2304 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2306 * @crtc: CRTC that framebuffer will be displayed on
2309 * @mode: mode that framebuffer will be displayed under
2310 * @fb: framebuffer to check size of
2312 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2314 const struct drm_display_mode *mode,
2315 const struct drm_framebuffer *fb)
2318 int hdisplay, vdisplay;
2320 hdisplay = mode->hdisplay;
2321 vdisplay = mode->vdisplay;
2323 if (drm_mode_is_stereo(mode)) {
2324 struct drm_display_mode adjusted = *mode;
2326 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE);
2327 hdisplay = adjusted.crtc_hdisplay;
2328 vdisplay = adjusted.crtc_vdisplay;
2331 if (crtc->invert_dimensions)
2332 swap(hdisplay, vdisplay);
2334 if (hdisplay > fb->width ||
2335 vdisplay > fb->height ||
2336 x > fb->width - hdisplay ||
2337 y > fb->height - vdisplay) {
2338 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2339 fb->width, fb->height, hdisplay, vdisplay, x, y,
2340 crtc->invert_dimensions ? " (inverted)" : "");
2346 EXPORT_SYMBOL(drm_crtc_check_viewport);
2349 * drm_mode_setcrtc - set CRTC configuration
2350 * @dev: drm device for the ioctl
2351 * @data: data pointer for the ioctl
2352 * @file_priv: drm file for the ioctl call
2354 * Build a new CRTC configuration based on user request.
2356 * Called by the user via ioctl.
2359 * Zero on success, errno on failure.
2361 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2362 struct drm_file *file_priv)
2364 struct drm_mode_config *config = &dev->mode_config;
2365 struct drm_mode_crtc *crtc_req = data;
2366 struct drm_crtc *crtc;
2367 struct drm_connector **connector_set = NULL, *connector;
2368 struct drm_framebuffer *fb = NULL;
2369 struct drm_display_mode *mode = NULL;
2370 struct drm_mode_set set;
2371 uint32_t __user *set_connectors_ptr;
2375 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2378 /* For some reason crtc x/y offsets are signed internally. */
2379 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2382 drm_modeset_lock_all(dev);
2383 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2385 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2389 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2391 if (crtc_req->mode_valid) {
2392 /* If we have a mode we need a framebuffer. */
2393 /* If we pass -1, set the mode with the currently bound fb */
2394 if (crtc_req->fb_id == -1) {
2395 if (!crtc->primary->fb) {
2396 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2400 fb = crtc->primary->fb;
2401 /* Make refcounting symmetric with the lookup path. */
2402 drm_framebuffer_reference(fb);
2404 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2406 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2413 mode = drm_mode_create(dev);
2419 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2421 DRM_DEBUG_KMS("Invalid mode\n");
2425 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2427 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2434 if (crtc_req->count_connectors == 0 && mode) {
2435 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2440 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2441 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2442 crtc_req->count_connectors);
2447 if (crtc_req->count_connectors > 0) {
2450 /* Avoid unbounded kernel memory allocation */
2451 if (crtc_req->count_connectors > config->num_connector) {
2456 connector_set = kmalloc(crtc_req->count_connectors *
2457 sizeof(struct drm_connector *),
2459 if (!connector_set) {
2464 for (i = 0; i < crtc_req->count_connectors; i++) {
2465 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2466 if (get_user(out_id, &set_connectors_ptr[i])) {
2471 connector = drm_connector_find(dev, out_id);
2473 DRM_DEBUG_KMS("Connector id %d unknown\n",
2478 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2482 connector_set[i] = connector;
2487 set.x = crtc_req->x;
2488 set.y = crtc_req->y;
2490 set.connectors = connector_set;
2491 set.num_connectors = crtc_req->count_connectors;
2493 ret = drm_mode_set_config_internal(&set);
2497 drm_framebuffer_unreference(fb);
2499 kfree(connector_set);
2500 drm_mode_destroy(dev, mode);
2501 drm_modeset_unlock_all(dev);
2505 static int drm_mode_cursor_common(struct drm_device *dev,
2506 struct drm_mode_cursor2 *req,
2507 struct drm_file *file_priv)
2509 struct drm_crtc *crtc;
2512 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2515 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2518 crtc = drm_crtc_find(dev, req->crtc_id);
2520 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2524 drm_modeset_lock(&crtc->mutex, NULL);
2525 if (req->flags & DRM_MODE_CURSOR_BO) {
2526 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
2530 /* Turns off the cursor if handle is 0 */
2531 if (crtc->funcs->cursor_set2)
2532 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2533 req->width, req->height, req->hot_x, req->hot_y);
2535 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2536 req->width, req->height);
2539 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2540 if (crtc->funcs->cursor_move) {
2541 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2548 drm_modeset_unlock(&crtc->mutex);
2556 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2557 * @dev: drm device for the ioctl
2558 * @data: data pointer for the ioctl
2559 * @file_priv: drm file for the ioctl call
2561 * Set the cursor configuration based on user request.
2563 * Called by the user via ioctl.
2566 * Zero on success, errno on failure.
2568 int drm_mode_cursor_ioctl(struct drm_device *dev,
2569 void *data, struct drm_file *file_priv)
2571 struct drm_mode_cursor *req = data;
2572 struct drm_mode_cursor2 new_req;
2574 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2575 new_req.hot_x = new_req.hot_y = 0;
2577 return drm_mode_cursor_common(dev, &new_req, file_priv);
2581 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2582 * @dev: drm device for the ioctl
2583 * @data: data pointer for the ioctl
2584 * @file_priv: drm file for the ioctl call
2586 * Set the cursor configuration based on user request. This implements the 2nd
2587 * version of the cursor ioctl, which allows userspace to additionally specify
2588 * the hotspot of the pointer.
2590 * Called by the user via ioctl.
2593 * Zero on success, errno on failure.
2595 int drm_mode_cursor2_ioctl(struct drm_device *dev,
2596 void *data, struct drm_file *file_priv)
2598 struct drm_mode_cursor2 *req = data;
2599 return drm_mode_cursor_common(dev, req, file_priv);
2603 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2604 * @bpp: bits per pixels
2605 * @depth: bit depth per pixel
2607 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2608 * Useful in fbdev emulation code, since that deals in those values.
2610 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2616 fmt = DRM_FORMAT_C8;
2620 fmt = DRM_FORMAT_XRGB1555;
2622 fmt = DRM_FORMAT_RGB565;
2625 fmt = DRM_FORMAT_RGB888;
2629 fmt = DRM_FORMAT_XRGB8888;
2630 else if (depth == 30)
2631 fmt = DRM_FORMAT_XRGB2101010;
2633 fmt = DRM_FORMAT_ARGB8888;
2636 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2637 fmt = DRM_FORMAT_XRGB8888;
2643 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
2646 * drm_mode_addfb - add an FB to the graphics configuration
2647 * @dev: drm device for the ioctl
2648 * @data: data pointer for the ioctl
2649 * @file_priv: drm file for the ioctl call
2651 * Add a new FB to the specified CRTC, given a user request. This is the
2652 * original addfb ioclt which only supported RGB formats.
2654 * Called by the user via ioctl.
2657 * Zero on success, errno on failure.
2659 int drm_mode_addfb(struct drm_device *dev,
2660 void *data, struct drm_file *file_priv)
2662 struct drm_mode_fb_cmd *or = data;
2663 struct drm_mode_fb_cmd2 r = {};
2664 struct drm_mode_config *config = &dev->mode_config;
2665 struct drm_framebuffer *fb;
2668 /* Use new struct with format internally */
2669 r.fb_id = or->fb_id;
2670 r.width = or->width;
2671 r.height = or->height;
2672 r.pitches[0] = or->pitch;
2673 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
2674 r.handles[0] = or->handle;
2676 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2679 if ((config->min_width > r.width) || (r.width > config->max_width))
2682 if ((config->min_height > r.height) || (r.height > config->max_height))
2685 fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r);
2687 DRM_DEBUG_KMS("could not create framebuffer\n");
2691 mutex_lock(&file_priv->fbs_lock);
2692 or->fb_id = fb->base.id;
2693 list_add(&fb->filp_head, &file_priv->fbs);
2694 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2695 mutex_unlock(&file_priv->fbs_lock);
2700 static int format_check(const struct drm_mode_fb_cmd2 *r)
2702 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
2706 case DRM_FORMAT_RGB332:
2707 case DRM_FORMAT_BGR233:
2708 case DRM_FORMAT_XRGB4444:
2709 case DRM_FORMAT_XBGR4444:
2710 case DRM_FORMAT_RGBX4444:
2711 case DRM_FORMAT_BGRX4444:
2712 case DRM_FORMAT_ARGB4444:
2713 case DRM_FORMAT_ABGR4444:
2714 case DRM_FORMAT_RGBA4444:
2715 case DRM_FORMAT_BGRA4444:
2716 case DRM_FORMAT_XRGB1555:
2717 case DRM_FORMAT_XBGR1555:
2718 case DRM_FORMAT_RGBX5551:
2719 case DRM_FORMAT_BGRX5551:
2720 case DRM_FORMAT_ARGB1555:
2721 case DRM_FORMAT_ABGR1555:
2722 case DRM_FORMAT_RGBA5551:
2723 case DRM_FORMAT_BGRA5551:
2724 case DRM_FORMAT_RGB565:
2725 case DRM_FORMAT_BGR565:
2726 case DRM_FORMAT_RGB888:
2727 case DRM_FORMAT_BGR888:
2728 case DRM_FORMAT_XRGB8888:
2729 case DRM_FORMAT_XBGR8888:
2730 case DRM_FORMAT_RGBX8888:
2731 case DRM_FORMAT_BGRX8888:
2732 case DRM_FORMAT_ARGB8888:
2733 case DRM_FORMAT_ABGR8888:
2734 case DRM_FORMAT_RGBA8888:
2735 case DRM_FORMAT_BGRA8888:
2736 case DRM_FORMAT_XRGB2101010:
2737 case DRM_FORMAT_XBGR2101010:
2738 case DRM_FORMAT_RGBX1010102:
2739 case DRM_FORMAT_BGRX1010102:
2740 case DRM_FORMAT_ARGB2101010:
2741 case DRM_FORMAT_ABGR2101010:
2742 case DRM_FORMAT_RGBA1010102:
2743 case DRM_FORMAT_BGRA1010102:
2744 case DRM_FORMAT_YUYV:
2745 case DRM_FORMAT_YVYU:
2746 case DRM_FORMAT_UYVY:
2747 case DRM_FORMAT_VYUY:
2748 case DRM_FORMAT_AYUV:
2749 case DRM_FORMAT_NV12:
2750 case DRM_FORMAT_NV21:
2751 case DRM_FORMAT_NV16:
2752 case DRM_FORMAT_NV61:
2753 case DRM_FORMAT_NV24:
2754 case DRM_FORMAT_NV42:
2755 case DRM_FORMAT_YUV410:
2756 case DRM_FORMAT_YVU410:
2757 case DRM_FORMAT_YUV411:
2758 case DRM_FORMAT_YVU411:
2759 case DRM_FORMAT_YUV420:
2760 case DRM_FORMAT_YVU420:
2761 case DRM_FORMAT_YUV422:
2762 case DRM_FORMAT_YVU422:
2763 case DRM_FORMAT_YUV444:
2764 case DRM_FORMAT_YVU444:
2767 DRM_DEBUG_KMS("invalid pixel format %s\n",
2768 drm_get_format_name(r->pixel_format));
2773 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
2775 int ret, hsub, vsub, num_planes, i;
2777 ret = format_check(r);
2779 DRM_DEBUG_KMS("bad framebuffer format %s\n",
2780 drm_get_format_name(r->pixel_format));
2784 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
2785 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
2786 num_planes = drm_format_num_planes(r->pixel_format);
2788 if (r->width == 0 || r->width % hsub) {
2789 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->height);
2793 if (r->height == 0 || r->height % vsub) {
2794 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
2798 for (i = 0; i < num_planes; i++) {
2799 unsigned int width = r->width / (i != 0 ? hsub : 1);
2800 unsigned int height = r->height / (i != 0 ? vsub : 1);
2801 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
2803 if (!r->handles[i]) {
2804 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
2808 if ((uint64_t) width * cpp > UINT_MAX)
2811 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
2814 if (r->pitches[i] < width * cpp) {
2815 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
2824 * drm_mode_addfb2 - add an FB to the graphics configuration
2825 * @dev: drm device for the ioctl
2826 * @data: data pointer for the ioctl
2827 * @file_priv: drm file for the ioctl call
2829 * Add a new FB to the specified CRTC, given a user request with format. This is
2830 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
2831 * and uses fourcc codes as pixel format specifiers.
2833 * Called by the user via ioctl.
2836 * Zero on success, errno on failure.
2838 int drm_mode_addfb2(struct drm_device *dev,
2839 void *data, struct drm_file *file_priv)
2841 struct drm_mode_fb_cmd2 *r = data;
2842 struct drm_mode_config *config = &dev->mode_config;
2843 struct drm_framebuffer *fb;
2846 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2849 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
2850 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
2854 if ((config->min_width > r->width) || (r->width > config->max_width)) {
2855 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
2856 r->width, config->min_width, config->max_width);
2859 if ((config->min_height > r->height) || (r->height > config->max_height)) {
2860 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
2861 r->height, config->min_height, config->max_height);
2865 ret = framebuffer_check(r);
2869 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
2871 DRM_DEBUG_KMS("could not create framebuffer\n");
2875 mutex_lock(&file_priv->fbs_lock);
2876 r->fb_id = fb->base.id;
2877 list_add(&fb->filp_head, &file_priv->fbs);
2878 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2879 mutex_unlock(&file_priv->fbs_lock);
2886 * drm_mode_rmfb - remove an FB from the configuration
2887 * @dev: drm device for the ioctl
2888 * @data: data pointer for the ioctl
2889 * @file_priv: drm file for the ioctl call
2891 * Remove the FB specified by the user.
2893 * Called by the user via ioctl.
2896 * Zero on success, errno on failure.
2898 int drm_mode_rmfb(struct drm_device *dev,
2899 void *data, struct drm_file *file_priv)
2901 struct drm_framebuffer *fb = NULL;
2902 struct drm_framebuffer *fbl = NULL;
2903 uint32_t *id = data;
2906 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2909 mutex_lock(&file_priv->fbs_lock);
2910 mutex_lock(&dev->mode_config.fb_lock);
2911 fb = __drm_framebuffer_lookup(dev, *id);
2915 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
2921 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
2922 __drm_framebuffer_unregister(dev, fb);
2924 list_del_init(&fb->filp_head);
2925 mutex_unlock(&dev->mode_config.fb_lock);
2926 mutex_unlock(&file_priv->fbs_lock);
2928 drm_framebuffer_remove(fb);
2933 mutex_unlock(&dev->mode_config.fb_lock);
2934 mutex_unlock(&file_priv->fbs_lock);
2940 * drm_mode_getfb - get FB info
2941 * @dev: drm device for the ioctl
2942 * @data: data pointer for the ioctl
2943 * @file_priv: drm file for the ioctl call
2945 * Lookup the FB given its ID and return info about it.
2947 * Called by the user via ioctl.
2950 * Zero on success, errno on failure.
2952 int drm_mode_getfb(struct drm_device *dev,
2953 void *data, struct drm_file *file_priv)
2955 struct drm_mode_fb_cmd *r = data;
2956 struct drm_framebuffer *fb;
2959 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2962 fb = drm_framebuffer_lookup(dev, r->fb_id);
2966 r->height = fb->height;
2967 r->width = fb->width;
2968 r->depth = fb->depth;
2969 r->bpp = fb->bits_per_pixel;
2970 r->pitch = fb->pitches[0];
2971 if (fb->funcs->create_handle) {
2972 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
2973 drm_is_control_client(file_priv)) {
2974 ret = fb->funcs->create_handle(fb, file_priv,
2977 /* GET_FB() is an unprivileged ioctl so we must not
2978 * return a buffer-handle to non-master processes! For
2979 * backwards-compatibility reasons, we cannot make
2980 * GET_FB() privileged, so just return an invalid handle
2981 * for non-masters. */
2989 drm_framebuffer_unreference(fb);
2995 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
2996 * @dev: drm device for the ioctl
2997 * @data: data pointer for the ioctl
2998 * @file_priv: drm file for the ioctl call
3000 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3001 * rectangle list. Generic userspace which does frontbuffer rendering must call
3002 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3003 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3005 * Modesetting drivers which always update the frontbuffer do not need to
3006 * implement the corresponding ->dirty framebuffer callback.
3008 * Called by the user via ioctl.
3011 * Zero on success, errno on failure.
3013 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3014 void *data, struct drm_file *file_priv)
3016 struct drm_clip_rect __user *clips_ptr;
3017 struct drm_clip_rect *clips = NULL;
3018 struct drm_mode_fb_dirty_cmd *r = data;
3019 struct drm_framebuffer *fb;
3024 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3027 fb = drm_framebuffer_lookup(dev, r->fb_id);
3031 num_clips = r->num_clips;
3032 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3034 if (!num_clips != !clips_ptr) {
3039 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3041 /* If userspace annotates copy, clips must come in pairs */
3042 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3047 if (num_clips && clips_ptr) {
3048 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3052 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
3058 ret = copy_from_user(clips, clips_ptr,
3059 num_clips * sizeof(*clips));
3066 if (fb->funcs->dirty) {
3067 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3076 drm_framebuffer_unreference(fb);
3083 * drm_fb_release - remove and free the FBs on this file
3084 * @priv: drm file for the ioctl
3086 * Destroy all the FBs associated with @filp.
3088 * Called by the user via ioctl.
3091 * Zero on success, errno on failure.
3093 void drm_fb_release(struct drm_file *priv)
3095 struct drm_device *dev = priv->minor->dev;
3096 struct drm_framebuffer *fb, *tfb;
3098 mutex_lock(&priv->fbs_lock);
3099 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3101 mutex_lock(&dev->mode_config.fb_lock);
3102 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3103 __drm_framebuffer_unregister(dev, fb);
3104 mutex_unlock(&dev->mode_config.fb_lock);
3106 list_del_init(&fb->filp_head);
3108 /* This will also drop the fpriv->fbs reference. */
3109 drm_framebuffer_remove(fb);
3111 mutex_unlock(&priv->fbs_lock);
3115 * drm_property_create - create a new property type
3117 * @flags: flags specifying the property type
3118 * @name: name of the property
3119 * @num_values: number of pre-defined values
3121 * This creates a new generic drm property which can then be attached to a drm
3122 * object with drm_object_attach_property. The returned property object must be
3123 * freed with drm_property_destroy.
3126 * A pointer to the newly created property on success, NULL on failure.
3128 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3129 const char *name, int num_values)
3131 struct drm_property *property = NULL;
3134 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3138 property->dev = dev;
3141 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
3142 if (!property->values)
3146 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3150 property->flags = flags;
3151 property->num_values = num_values;
3152 INIT_LIST_HEAD(&property->enum_blob_list);
3155 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3156 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3159 list_add_tail(&property->head, &dev->mode_config.property_list);
3161 WARN_ON(!drm_property_type_valid(property));
3165 kfree(property->values);
3169 EXPORT_SYMBOL(drm_property_create);
3172 * drm_property_create - create a new enumeration property type
3174 * @flags: flags specifying the property type
3175 * @name: name of the property
3176 * @props: enumeration lists with property values
3177 * @num_values: number of pre-defined values
3179 * This creates a new generic drm property which can then be attached to a drm
3180 * object with drm_object_attach_property. The returned property object must be
3181 * freed with drm_property_destroy.
3183 * Userspace is only allowed to set one of the predefined values for enumeration
3187 * A pointer to the newly created property on success, NULL on failure.
3189 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3191 const struct drm_prop_enum_list *props,
3194 struct drm_property *property;
3197 flags |= DRM_MODE_PROP_ENUM;
3199 property = drm_property_create(dev, flags, name, num_values);
3203 for (i = 0; i < num_values; i++) {
3204 ret = drm_property_add_enum(property, i,
3208 drm_property_destroy(dev, property);
3215 EXPORT_SYMBOL(drm_property_create_enum);
3218 * drm_property_create - create a new bitmask property type
3220 * @flags: flags specifying the property type
3221 * @name: name of the property
3222 * @props: enumeration lists with property bitflags
3223 * @num_values: number of pre-defined values
3225 * This creates a new generic drm property which can then be attached to a drm
3226 * object with drm_object_attach_property. The returned property object must be
3227 * freed with drm_property_destroy.
3229 * Compared to plain enumeration properties userspace is allowed to set any
3230 * or'ed together combination of the predefined property bitflag values
3233 * A pointer to the newly created property on success, NULL on failure.
3235 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3236 int flags, const char *name,
3237 const struct drm_prop_enum_list *props,
3240 struct drm_property *property;
3243 flags |= DRM_MODE_PROP_BITMASK;
3245 property = drm_property_create(dev, flags, name, num_values);
3249 for (i = 0; i < num_values; i++) {
3250 ret = drm_property_add_enum(property, i,
3254 drm_property_destroy(dev, property);
3261 EXPORT_SYMBOL(drm_property_create_bitmask);
3263 static struct drm_property *property_create_range(struct drm_device *dev,
3264 int flags, const char *name,
3265 uint64_t min, uint64_t max)
3267 struct drm_property *property;
3269 property = drm_property_create(dev, flags, name, 2);
3273 property->values[0] = min;
3274 property->values[1] = max;
3280 * drm_property_create - create a new ranged property type
3282 * @flags: flags specifying the property type
3283 * @name: name of the property
3284 * @min: minimum value of the property
3285 * @max: maximum value of the property
3287 * This creates a new generic drm property which can then be attached to a drm
3288 * object with drm_object_attach_property. The returned property object must be
3289 * freed with drm_property_destroy.
3291 * Userspace is allowed to set any interger value in the (min, max) range
3295 * A pointer to the newly created property on success, NULL on failure.
3297 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3299 uint64_t min, uint64_t max)
3301 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3304 EXPORT_SYMBOL(drm_property_create_range);
3306 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3307 int flags, const char *name,
3308 int64_t min, int64_t max)
3310 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3311 name, I642U64(min), I642U64(max));
3313 EXPORT_SYMBOL(drm_property_create_signed_range);
3315 struct drm_property *drm_property_create_object(struct drm_device *dev,
3316 int flags, const char *name, uint32_t type)
3318 struct drm_property *property;
3320 flags |= DRM_MODE_PROP_OBJECT;
3322 property = drm_property_create(dev, flags, name, 1);
3326 property->values[0] = type;
3330 EXPORT_SYMBOL(drm_property_create_object);
3333 * drm_property_add_enum - add a possible value to an enumeration property
3334 * @property: enumeration property to change
3335 * @index: index of the new enumeration
3336 * @value: value of the new enumeration
3337 * @name: symbolic name of the new enumeration
3339 * This functions adds enumerations to a property.
3341 * It's use is deprecated, drivers should use one of the more specific helpers
3342 * to directly create the property with all enumerations already attached.
3345 * Zero on success, error code on failure.
3347 int drm_property_add_enum(struct drm_property *property, int index,
3348 uint64_t value, const char *name)
3350 struct drm_property_enum *prop_enum;
3352 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3353 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
3357 * Bitmask enum properties have the additional constraint of values
3360 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3364 if (!list_empty(&property->enum_blob_list)) {
3365 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3366 if (prop_enum->value == value) {
3367 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3368 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3374 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3378 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3379 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3380 prop_enum->value = value;
3382 property->values[index] = value;
3383 list_add_tail(&prop_enum->head, &property->enum_blob_list);
3386 EXPORT_SYMBOL(drm_property_add_enum);
3389 * drm_property_destroy - destroy a drm property
3391 * @property: property to destry
3393 * This function frees a property including any attached resources like
3394 * enumeration values.
3396 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3398 struct drm_property_enum *prop_enum, *pt;
3400 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
3401 list_del(&prop_enum->head);
3405 if (property->num_values)
3406 kfree(property->values);
3407 drm_mode_object_put(dev, &property->base);
3408 list_del(&property->head);
3411 EXPORT_SYMBOL(drm_property_destroy);
3414 * drm_object_attach_property - attach a property to a modeset object
3415 * @obj: drm modeset object
3416 * @property: property to attach
3417 * @init_val: initial value of the property
3419 * This attaches the given property to the modeset object with the given initial
3420 * value. Currently this function cannot fail since the properties are stored in
3421 * a statically sized array.
3423 void drm_object_attach_property(struct drm_mode_object *obj,
3424 struct drm_property *property,
3427 int count = obj->properties->count;
3429 if (count == DRM_OBJECT_MAX_PROPERTY) {
3430 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3431 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3432 "you see this message on the same object type.\n",
3437 obj->properties->ids[count] = property->base.id;
3438 obj->properties->values[count] = init_val;
3439 obj->properties->count++;
3441 EXPORT_SYMBOL(drm_object_attach_property);
3444 * drm_object_property_set_value - set the value of a property
3445 * @obj: drm mode object to set property value for
3446 * @property: property to set
3447 * @val: value the property should be set to
3449 * This functions sets a given property on a given object. This function only
3450 * changes the software state of the property, it does not call into the
3451 * driver's ->set_property callback.
3454 * Zero on success, error code on failure.
3456 int drm_object_property_set_value(struct drm_mode_object *obj,
3457 struct drm_property *property, uint64_t val)
3461 for (i = 0; i < obj->properties->count; i++) {
3462 if (obj->properties->ids[i] == property->base.id) {
3463 obj->properties->values[i] = val;
3470 EXPORT_SYMBOL(drm_object_property_set_value);
3473 * drm_object_property_get_value - retrieve the value of a property
3474 * @obj: drm mode object to get property value from
3475 * @property: property to retrieve
3476 * @val: storage for the property value
3478 * This function retrieves the softare state of the given property for the given
3479 * property. Since there is no driver callback to retrieve the current property
3480 * value this might be out of sync with the hardware, depending upon the driver
3484 * Zero on success, error code on failure.
3486 int drm_object_property_get_value(struct drm_mode_object *obj,
3487 struct drm_property *property, uint64_t *val)
3491 for (i = 0; i < obj->properties->count; i++) {
3492 if (obj->properties->ids[i] == property->base.id) {
3493 *val = obj->properties->values[i];
3500 EXPORT_SYMBOL(drm_object_property_get_value);
3503 * drm_mode_getproperty_ioctl - get the current value of a connector's property
3506 * @file_priv: DRM file info
3508 * This function retrieves the current value for an connectors's property.
3510 * Called by the user via ioctl.
3513 * Zero on success, errno on failure.
3515 int drm_mode_getproperty_ioctl(struct drm_device *dev,
3516 void *data, struct drm_file *file_priv)
3518 struct drm_mode_get_property *out_resp = data;
3519 struct drm_property *property;
3522 int value_count = 0;
3525 struct drm_property_enum *prop_enum;
3526 struct drm_mode_property_enum __user *enum_ptr;
3527 struct drm_property_blob *prop_blob;
3528 uint32_t __user *blob_id_ptr;
3529 uint64_t __user *values_ptr;
3530 uint32_t __user *blob_length_ptr;
3532 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3535 drm_modeset_lock_all(dev);
3536 property = drm_property_find(dev, out_resp->prop_id);
3542 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3543 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3544 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
3546 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
3547 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
3551 value_count = property->num_values;
3553 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
3554 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
3555 out_resp->flags = property->flags;
3557 if ((out_resp->count_values >= value_count) && value_count) {
3558 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
3559 for (i = 0; i < value_count; i++) {
3560 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
3566 out_resp->count_values = value_count;
3568 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3569 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3570 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
3572 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3573 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3575 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
3580 if (copy_to_user(&enum_ptr[copied].name,
3581 &prop_enum->name, DRM_PROP_NAME_LEN)) {
3588 out_resp->count_enum_blobs = enum_count;
3591 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
3592 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
3594 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr;
3595 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr;
3597 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
3598 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
3603 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
3611 out_resp->count_enum_blobs = blob_count;
3614 drm_modeset_unlock_all(dev);
3618 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
3621 struct drm_property_blob *blob;
3624 if (!length || !data)
3627 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
3631 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
3637 blob->length = length;
3639 memcpy(blob->data, data, length);
3641 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
3645 static void drm_property_destroy_blob(struct drm_device *dev,
3646 struct drm_property_blob *blob)
3648 drm_mode_object_put(dev, &blob->base);
3649 list_del(&blob->head);
3654 * drm_mode_getblob_ioctl - get the contents of a blob property value
3657 * @file_priv: DRM file info
3659 * This function retrieves the contents of a blob property. The value stored in
3660 * an object's blob property is just a normal modeset object id.
3662 * Called by the user via ioctl.
3665 * Zero on success, errno on failure.
3667 int drm_mode_getblob_ioctl(struct drm_device *dev,
3668 void *data, struct drm_file *file_priv)
3670 struct drm_mode_get_blob *out_resp = data;
3671 struct drm_property_blob *blob;
3673 void __user *blob_ptr;
3675 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3678 drm_modeset_lock_all(dev);
3679 blob = drm_property_blob_find(dev, out_resp->blob_id);
3685 if (out_resp->length == blob->length) {
3686 blob_ptr = (void __user *)(unsigned long)out_resp->data;
3687 if (copy_to_user(blob_ptr, blob->data, blob->length)){
3692 out_resp->length = blob->length;
3695 drm_modeset_unlock_all(dev);
3700 * drm_mode_connector_update_edid_property - update the edid property of a connector
3701 * @connector: drm connector
3702 * @edid: new value of the edid property
3704 * This function creates a new blob modeset object and assigns its id to the
3705 * connector's edid property.
3708 * Zero on success, errno on failure.
3710 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
3713 struct drm_device *dev = connector->dev;
3716 if (connector->edid_blob_ptr)
3717 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
3719 /* Delete edid, when there is none. */
3721 connector->edid_blob_ptr = NULL;
3722 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
3726 size = EDID_LENGTH * (1 + edid->extensions);
3727 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
3729 if (!connector->edid_blob_ptr)
3732 ret = drm_object_property_set_value(&connector->base,
3733 dev->mode_config.edid_property,
3734 connector->edid_blob_ptr->base.id);
3738 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
3740 static bool drm_property_change_is_valid(struct drm_property *property,
3743 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
3746 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
3747 if (value < property->values[0] || value > property->values[1])
3750 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
3751 int64_t svalue = U642I64(value);
3752 if (svalue < U642I64(property->values[0]) ||
3753 svalue > U642I64(property->values[1]))
3756 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3758 uint64_t valid_mask = 0;
3759 for (i = 0; i < property->num_values; i++)
3760 valid_mask |= (1ULL << property->values[i]);
3761 return !(value & ~valid_mask);
3762 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
3763 /* Only the driver knows */
3765 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
3766 struct drm_mode_object *obj;
3767 /* a zero value for an object property translates to null: */
3771 * NOTE: use _object_find() directly to bypass restriction on
3772 * looking up refcnt'd objects (ie. fb's). For a refcnt'd
3773 * object this could race against object finalization, so it
3774 * simply tells us that the object *was* valid. Which is good
3777 obj = _object_find(property->dev, value, property->values[0]);
3781 for (i = 0; i < property->num_values; i++)
3782 if (property->values[i] == value)
3789 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
3792 * @file_priv: DRM file info
3794 * This function sets the current value for a connectors's property. It also
3795 * calls into a driver's ->set_property callback to update the hardware state
3797 * Called by the user via ioctl.
3800 * Zero on success, errno on failure.
3802 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
3803 void *data, struct drm_file *file_priv)
3805 struct drm_mode_connector_set_property *conn_set_prop = data;
3806 struct drm_mode_obj_set_property obj_set_prop = {
3807 .value = conn_set_prop->value,
3808 .prop_id = conn_set_prop->prop_id,
3809 .obj_id = conn_set_prop->connector_id,
3810 .obj_type = DRM_MODE_OBJECT_CONNECTOR
3813 /* It does all the locking and checking we need */
3814 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
3817 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
3818 struct drm_property *property,
3822 struct drm_connector *connector = obj_to_connector(obj);
3824 /* Do DPMS ourselves */
3825 if (property == connector->dev->mode_config.dpms_property) {
3826 if (connector->funcs->dpms)
3827 (*connector->funcs->dpms)(connector, (int)value);
3829 } else if (connector->funcs->set_property)
3830 ret = connector->funcs->set_property(connector, property, value);
3832 /* store the property value if successful */
3834 drm_object_property_set_value(&connector->base, property, value);
3838 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
3839 struct drm_property *property,
3843 struct drm_crtc *crtc = obj_to_crtc(obj);
3845 if (crtc->funcs->set_property)
3846 ret = crtc->funcs->set_property(crtc, property, value);
3848 drm_object_property_set_value(obj, property, value);
3853 static int drm_mode_plane_set_obj_prop(struct drm_mode_object *obj,
3854 struct drm_property *property,
3858 struct drm_plane *plane = obj_to_plane(obj);
3860 if (plane->funcs->set_property)
3861 ret = plane->funcs->set_property(plane, property, value);
3863 drm_object_property_set_value(obj, property, value);
3869 * drm_mode_getproperty_ioctl - get the current value of a object's property
3872 * @file_priv: DRM file info
3874 * This function retrieves the current value for an object's property. Compared
3875 * to the connector specific ioctl this one is extended to also work on crtc and
3878 * Called by the user via ioctl.
3881 * Zero on success, errno on failure.
3883 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
3884 struct drm_file *file_priv)
3886 struct drm_mode_obj_get_properties *arg = data;
3887 struct drm_mode_object *obj;
3891 int props_count = 0;
3892 uint32_t __user *props_ptr;
3893 uint64_t __user *prop_values_ptr;
3895 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3898 drm_modeset_lock_all(dev);
3900 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
3905 if (!obj->properties) {
3910 props_count = obj->properties->count;
3912 /* This ioctl is called twice, once to determine how much space is
3913 * needed, and the 2nd time to fill it. */
3914 if ((arg->count_props >= props_count) && props_count) {
3916 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
3917 prop_values_ptr = (uint64_t __user *)(unsigned long)
3918 (arg->prop_values_ptr);
3919 for (i = 0; i < props_count; i++) {
3920 if (put_user(obj->properties->ids[i],
3921 props_ptr + copied)) {
3925 if (put_user(obj->properties->values[i],
3926 prop_values_ptr + copied)) {
3933 arg->count_props = props_count;
3935 drm_modeset_unlock_all(dev);
3940 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
3943 * @file_priv: DRM file info
3945 * This function sets the current value for an object's property. It also calls
3946 * into a driver's ->set_property callback to update the hardware state.
3947 * Compared to the connector specific ioctl this one is extended to also work on
3948 * crtc and plane objects.
3950 * Called by the user via ioctl.
3953 * Zero on success, errno on failure.
3955 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
3956 struct drm_file *file_priv)
3958 struct drm_mode_obj_set_property *arg = data;
3959 struct drm_mode_object *arg_obj;
3960 struct drm_mode_object *prop_obj;
3961 struct drm_property *property;
3965 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3968 drm_modeset_lock_all(dev);
3970 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
3975 if (!arg_obj->properties)
3978 for (i = 0; i < arg_obj->properties->count; i++)
3979 if (arg_obj->properties->ids[i] == arg->prop_id)
3982 if (i == arg_obj->properties->count)
3985 prop_obj = drm_mode_object_find(dev, arg->prop_id,
3986 DRM_MODE_OBJECT_PROPERTY);
3991 property = obj_to_property(prop_obj);
3993 if (!drm_property_change_is_valid(property, arg->value))
3996 switch (arg_obj->type) {
3997 case DRM_MODE_OBJECT_CONNECTOR:
3998 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4001 case DRM_MODE_OBJECT_CRTC:
4002 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4004 case DRM_MODE_OBJECT_PLANE:
4005 ret = drm_mode_plane_set_obj_prop(arg_obj, property, arg->value);
4010 drm_modeset_unlock_all(dev);
4015 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4016 * @connector: connector to attach
4017 * @encoder: encoder to attach @connector to
4019 * This function links up a connector to an encoder. Note that the routing
4020 * restrictions between encoders and crtcs are exposed to userspace through the
4021 * possible_clones and possible_crtcs bitmasks.
4024 * Zero on success, errno on failure.
4026 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4027 struct drm_encoder *encoder)
4031 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4032 if (connector->encoder_ids[i] == 0) {
4033 connector->encoder_ids[i] = encoder->base.id;
4039 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4042 * drm_mode_crtc_set_gamma_size - set the gamma table size
4043 * @crtc: CRTC to set the gamma table size for
4044 * @gamma_size: size of the gamma table
4046 * Drivers which support gamma tables should set this to the supported gamma
4047 * table size when initializing the CRTC. Currently the drm core only supports a
4048 * fixed gamma table size.
4051 * Zero on success, errno on failure.
4053 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
4056 crtc->gamma_size = gamma_size;
4058 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
4059 if (!crtc->gamma_store) {
4060 crtc->gamma_size = 0;
4066 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
4069 * drm_mode_gamma_set_ioctl - set the gamma table
4072 * @file_priv: DRM file info
4074 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4075 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4077 * Called by the user via ioctl.
4080 * Zero on success, errno on failure.
4082 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
4083 void *data, struct drm_file *file_priv)
4085 struct drm_mode_crtc_lut *crtc_lut = data;
4086 struct drm_crtc *crtc;
4087 void *r_base, *g_base, *b_base;
4091 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4094 drm_modeset_lock_all(dev);
4095 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4101 if (crtc->funcs->gamma_set == NULL) {
4106 /* memcpy into gamma store */
4107 if (crtc_lut->gamma_size != crtc->gamma_size) {
4112 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4113 r_base = crtc->gamma_store;
4114 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4119 g_base = r_base + size;
4120 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4125 b_base = g_base + size;
4126 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4131 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
4134 drm_modeset_unlock_all(dev);
4140 * drm_mode_gamma_get_ioctl - get the gamma table
4143 * @file_priv: DRM file info
4145 * Copy the current gamma table into the storage provided. This also provides
4146 * the gamma table size the driver expects, which can be used to size the
4147 * allocated storage.
4149 * Called by the user via ioctl.
4152 * Zero on success, errno on failure.
4154 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4155 void *data, struct drm_file *file_priv)
4157 struct drm_mode_crtc_lut *crtc_lut = data;
4158 struct drm_crtc *crtc;
4159 void *r_base, *g_base, *b_base;
4163 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4166 drm_modeset_lock_all(dev);
4167 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4173 /* memcpy into gamma store */
4174 if (crtc_lut->gamma_size != crtc->gamma_size) {
4179 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4180 r_base = crtc->gamma_store;
4181 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4186 g_base = r_base + size;
4187 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4192 b_base = g_base + size;
4193 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4198 drm_modeset_unlock_all(dev);
4203 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4206 * @file_priv: DRM file info
4208 * This schedules an asynchronous update on a given CRTC, called page flip.
4209 * Optionally a drm event is generated to signal the completion of the event.
4210 * Generic drivers cannot assume that a pageflip with changed framebuffer
4211 * properties (including driver specific metadata like tiling layout) will work,
4212 * but some drivers support e.g. pixel format changes through the pageflip
4215 * Called by the user via ioctl.
4218 * Zero on success, errno on failure.
4220 int drm_mode_page_flip_ioctl(struct drm_device *dev,
4221 void *data, struct drm_file *file_priv)
4223 struct drm_mode_crtc_page_flip *page_flip = data;
4224 struct drm_crtc *crtc;
4225 struct drm_framebuffer *fb = NULL, *old_fb = NULL;
4226 struct drm_pending_vblank_event *e = NULL;
4227 unsigned long flags;
4230 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4231 page_flip->reserved != 0)
4234 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4237 crtc = drm_crtc_find(dev, page_flip->crtc_id);
4241 drm_modeset_lock(&crtc->mutex, NULL);
4242 if (crtc->primary->fb == NULL) {
4243 /* The framebuffer is currently unbound, presumably
4244 * due to a hotplug event, that userspace has not
4251 if (crtc->funcs->page_flip == NULL)
4254 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
4260 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4264 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
4265 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4270 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4272 spin_lock_irqsave(&dev->event_lock, flags);
4273 if (file_priv->event_space < sizeof e->event) {
4274 spin_unlock_irqrestore(&dev->event_lock, flags);
4277 file_priv->event_space -= sizeof e->event;
4278 spin_unlock_irqrestore(&dev->event_lock, flags);
4280 e = kzalloc(sizeof *e, GFP_KERNEL);
4282 spin_lock_irqsave(&dev->event_lock, flags);
4283 file_priv->event_space += sizeof e->event;
4284 spin_unlock_irqrestore(&dev->event_lock, flags);
4288 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
4289 e->event.base.length = sizeof e->event;
4290 e->event.user_data = page_flip->user_data;
4291 e->base.event = &e->event.base;
4292 e->base.file_priv = file_priv;
4294 (void (*) (struct drm_pending_event *)) kfree;
4297 old_fb = crtc->primary->fb;
4298 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
4300 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4301 spin_lock_irqsave(&dev->event_lock, flags);
4302 file_priv->event_space += sizeof e->event;
4303 spin_unlock_irqrestore(&dev->event_lock, flags);
4306 /* Keep the old fb, don't unref it. */
4310 * Warn if the driver hasn't properly updated the crtc->fb
4311 * field to reflect that the new framebuffer is now used.
4312 * Failing to do so will screw with the reference counting
4315 WARN_ON(crtc->primary->fb != fb);
4316 /* Unref only the old framebuffer. */
4322 drm_framebuffer_unreference(fb);
4324 drm_framebuffer_unreference(old_fb);
4325 drm_modeset_unlock(&crtc->mutex);
4331 * drm_mode_config_reset - call ->reset callbacks
4334 * This functions calls all the crtc's, encoder's and connector's ->reset
4335 * callback. Drivers can use this in e.g. their driver load or resume code to
4336 * reset hardware and software state.
4338 void drm_mode_config_reset(struct drm_device *dev)
4340 struct drm_crtc *crtc;
4341 struct drm_encoder *encoder;
4342 struct drm_connector *connector;
4344 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4345 if (crtc->funcs->reset)
4346 crtc->funcs->reset(crtc);
4348 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4349 if (encoder->funcs->reset)
4350 encoder->funcs->reset(encoder);
4352 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4353 connector->status = connector_status_unknown;
4355 if (connector->funcs->reset)
4356 connector->funcs->reset(connector);
4359 EXPORT_SYMBOL(drm_mode_config_reset);
4362 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4365 * @file_priv: DRM file info
4367 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4368 * TTM or something else entirely) and returns the resulting buffer handle. This
4369 * handle can then be wrapped up into a framebuffer modeset object.
4371 * Note that userspace is not allowed to use such objects for render
4372 * acceleration - drivers must create their own private ioctls for such a use
4375 * Called by the user via ioctl.
4378 * Zero on success, errno on failure.
4380 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
4381 void *data, struct drm_file *file_priv)
4383 struct drm_mode_create_dumb *args = data;
4384 u32 cpp, stride, size;
4386 if (!dev->driver->dumb_create)
4388 if (!args->width || !args->height || !args->bpp)
4391 /* overflow checks for 32bit size calculations */
4392 cpp = DIV_ROUND_UP(args->bpp, 8);
4393 if (cpp > 0xffffffffU / args->width)
4395 stride = cpp * args->width;
4396 if (args->height > 0xffffffffU / stride)
4399 /* test for wrap-around */
4400 size = args->height * stride;
4401 if (PAGE_ALIGN(size) == 0)
4404 return dev->driver->dumb_create(file_priv, dev, args);
4408 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4411 * @file_priv: DRM file info
4413 * Allocate an offset in the drm device node's address space to be able to
4414 * memory map a dumb buffer.
4416 * Called by the user via ioctl.
4419 * Zero on success, errno on failure.
4421 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
4422 void *data, struct drm_file *file_priv)
4424 struct drm_mode_map_dumb *args = data;
4426 /* call driver ioctl to get mmap offset */
4427 if (!dev->driver->dumb_map_offset)
4430 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
4434 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4437 * @file_priv: DRM file info
4439 * This destroys the userspace handle for the given dumb backing storage buffer.
4440 * Since buffer objects must be reference counted in the kernel a buffer object
4441 * won't be immediately freed if a framebuffer modeset object still uses it.
4443 * Called by the user via ioctl.
4446 * Zero on success, errno on failure.
4448 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
4449 void *data, struct drm_file *file_priv)
4451 struct drm_mode_destroy_dumb *args = data;
4453 if (!dev->driver->dumb_destroy)
4456 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
4460 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4461 * @format: pixel format (DRM_FORMAT_*)
4462 * @depth: storage for the depth value
4463 * @bpp: storage for the bpp value
4465 * This only supports RGB formats here for compat with code that doesn't use
4466 * pixel formats directly yet.
4468 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
4473 case DRM_FORMAT_RGB332:
4474 case DRM_FORMAT_BGR233:
4478 case DRM_FORMAT_XRGB1555:
4479 case DRM_FORMAT_XBGR1555:
4480 case DRM_FORMAT_RGBX5551:
4481 case DRM_FORMAT_BGRX5551:
4482 case DRM_FORMAT_ARGB1555:
4483 case DRM_FORMAT_ABGR1555:
4484 case DRM_FORMAT_RGBA5551:
4485 case DRM_FORMAT_BGRA5551:
4489 case DRM_FORMAT_RGB565:
4490 case DRM_FORMAT_BGR565:
4494 case DRM_FORMAT_RGB888:
4495 case DRM_FORMAT_BGR888:
4499 case DRM_FORMAT_XRGB8888:
4500 case DRM_FORMAT_XBGR8888:
4501 case DRM_FORMAT_RGBX8888:
4502 case DRM_FORMAT_BGRX8888:
4506 case DRM_FORMAT_XRGB2101010:
4507 case DRM_FORMAT_XBGR2101010:
4508 case DRM_FORMAT_RGBX1010102:
4509 case DRM_FORMAT_BGRX1010102:
4510 case DRM_FORMAT_ARGB2101010:
4511 case DRM_FORMAT_ABGR2101010:
4512 case DRM_FORMAT_RGBA1010102:
4513 case DRM_FORMAT_BGRA1010102:
4517 case DRM_FORMAT_ARGB8888:
4518 case DRM_FORMAT_ABGR8888:
4519 case DRM_FORMAT_RGBA8888:
4520 case DRM_FORMAT_BGRA8888:
4525 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4526 drm_get_format_name(format));
4532 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
4535 * drm_format_num_planes - get the number of planes for format
4536 * @format: pixel format (DRM_FORMAT_*)
4539 * The number of planes used by the specified pixel format.
4541 int drm_format_num_planes(uint32_t format)
4544 case DRM_FORMAT_YUV410:
4545 case DRM_FORMAT_YVU410:
4546 case DRM_FORMAT_YUV411:
4547 case DRM_FORMAT_YVU411:
4548 case DRM_FORMAT_YUV420:
4549 case DRM_FORMAT_YVU420:
4550 case DRM_FORMAT_YUV422:
4551 case DRM_FORMAT_YVU422:
4552 case DRM_FORMAT_YUV444:
4553 case DRM_FORMAT_YVU444:
4555 case DRM_FORMAT_NV12:
4556 case DRM_FORMAT_NV21:
4557 case DRM_FORMAT_NV16:
4558 case DRM_FORMAT_NV61:
4559 case DRM_FORMAT_NV24:
4560 case DRM_FORMAT_NV42:
4566 EXPORT_SYMBOL(drm_format_num_planes);
4569 * drm_format_plane_cpp - determine the bytes per pixel value
4570 * @format: pixel format (DRM_FORMAT_*)
4571 * @plane: plane index
4574 * The bytes per pixel value for the specified plane.
4576 int drm_format_plane_cpp(uint32_t format, int plane)
4581 if (plane >= drm_format_num_planes(format))
4585 case DRM_FORMAT_YUYV:
4586 case DRM_FORMAT_YVYU:
4587 case DRM_FORMAT_UYVY:
4588 case DRM_FORMAT_VYUY:
4590 case DRM_FORMAT_NV12:
4591 case DRM_FORMAT_NV21:
4592 case DRM_FORMAT_NV16:
4593 case DRM_FORMAT_NV61:
4594 case DRM_FORMAT_NV24:
4595 case DRM_FORMAT_NV42:
4596 return plane ? 2 : 1;
4597 case DRM_FORMAT_YUV410:
4598 case DRM_FORMAT_YVU410:
4599 case DRM_FORMAT_YUV411:
4600 case DRM_FORMAT_YVU411:
4601 case DRM_FORMAT_YUV420:
4602 case DRM_FORMAT_YVU420:
4603 case DRM_FORMAT_YUV422:
4604 case DRM_FORMAT_YVU422:
4605 case DRM_FORMAT_YUV444:
4606 case DRM_FORMAT_YVU444:
4609 drm_fb_get_bpp_depth(format, &depth, &bpp);
4613 EXPORT_SYMBOL(drm_format_plane_cpp);
4616 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
4617 * @format: pixel format (DRM_FORMAT_*)
4620 * The horizontal chroma subsampling factor for the
4621 * specified pixel format.
4623 int drm_format_horz_chroma_subsampling(uint32_t format)
4626 case DRM_FORMAT_YUV411:
4627 case DRM_FORMAT_YVU411:
4628 case DRM_FORMAT_YUV410:
4629 case DRM_FORMAT_YVU410:
4631 case DRM_FORMAT_YUYV:
4632 case DRM_FORMAT_YVYU:
4633 case DRM_FORMAT_UYVY:
4634 case DRM_FORMAT_VYUY:
4635 case DRM_FORMAT_NV12:
4636 case DRM_FORMAT_NV21:
4637 case DRM_FORMAT_NV16:
4638 case DRM_FORMAT_NV61:
4639 case DRM_FORMAT_YUV422:
4640 case DRM_FORMAT_YVU422:
4641 case DRM_FORMAT_YUV420:
4642 case DRM_FORMAT_YVU420:
4648 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
4651 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
4652 * @format: pixel format (DRM_FORMAT_*)
4655 * The vertical chroma subsampling factor for the
4656 * specified pixel format.
4658 int drm_format_vert_chroma_subsampling(uint32_t format)
4661 case DRM_FORMAT_YUV410:
4662 case DRM_FORMAT_YVU410:
4664 case DRM_FORMAT_YUV420:
4665 case DRM_FORMAT_YVU420:
4666 case DRM_FORMAT_NV12:
4667 case DRM_FORMAT_NV21:
4673 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
4676 * drm_mode_config_init - initialize DRM mode_configuration structure
4679 * Initialize @dev's mode_config structure, used for tracking the graphics
4680 * configuration of @dev.
4682 * Since this initializes the modeset locks, no locking is possible. Which is no
4683 * problem, since this should happen single threaded at init time. It is the
4684 * driver's problem to ensure this guarantee.
4687 void drm_mode_config_init(struct drm_device *dev)
4689 mutex_init(&dev->mode_config.mutex);
4690 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
4691 mutex_init(&dev->mode_config.idr_mutex);
4692 mutex_init(&dev->mode_config.fb_lock);
4693 INIT_LIST_HEAD(&dev->mode_config.fb_list);
4694 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
4695 INIT_LIST_HEAD(&dev->mode_config.connector_list);
4696 INIT_LIST_HEAD(&dev->mode_config.bridge_list);
4697 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
4698 INIT_LIST_HEAD(&dev->mode_config.property_list);
4699 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
4700 INIT_LIST_HEAD(&dev->mode_config.plane_list);
4701 idr_init(&dev->mode_config.crtc_idr);
4703 drm_modeset_lock_all(dev);
4704 drm_mode_create_standard_connector_properties(dev);
4705 drm_mode_create_standard_plane_properties(dev);
4706 drm_modeset_unlock_all(dev);
4708 /* Just to be sure */
4709 dev->mode_config.num_fb = 0;
4710 dev->mode_config.num_connector = 0;
4711 dev->mode_config.num_crtc = 0;
4712 dev->mode_config.num_encoder = 0;
4713 dev->mode_config.num_overlay_plane = 0;
4714 dev->mode_config.num_total_plane = 0;
4716 EXPORT_SYMBOL(drm_mode_config_init);
4719 * drm_mode_config_cleanup - free up DRM mode_config info
4722 * Free up all the connectors and CRTCs associated with this DRM device, then
4723 * free up the framebuffers and associated buffer objects.
4725 * Note that since this /should/ happen single-threaded at driver/device
4726 * teardown time, no locking is required. It's the driver's job to ensure that
4727 * this guarantee actually holds true.
4729 * FIXME: cleanup any dangling user buffer objects too
4731 void drm_mode_config_cleanup(struct drm_device *dev)
4733 struct drm_connector *connector, *ot;
4734 struct drm_crtc *crtc, *ct;
4735 struct drm_encoder *encoder, *enct;
4736 struct drm_bridge *bridge, *brt;
4737 struct drm_framebuffer *fb, *fbt;
4738 struct drm_property *property, *pt;
4739 struct drm_property_blob *blob, *bt;
4740 struct drm_plane *plane, *plt;
4742 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
4744 encoder->funcs->destroy(encoder);
4747 list_for_each_entry_safe(bridge, brt,
4748 &dev->mode_config.bridge_list, head) {
4749 bridge->funcs->destroy(bridge);
4752 list_for_each_entry_safe(connector, ot,
4753 &dev->mode_config.connector_list, head) {
4754 connector->funcs->destroy(connector);
4757 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
4759 drm_property_destroy(dev, property);
4762 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
4764 drm_property_destroy_blob(dev, blob);
4768 * Single-threaded teardown context, so it's not required to grab the
4769 * fb_lock to protect against concurrent fb_list access. Contrary, it
4770 * would actually deadlock with the drm_framebuffer_cleanup function.
4772 * Also, if there are any framebuffers left, that's a driver leak now,
4773 * so politely WARN about this.
4775 WARN_ON(!list_empty(&dev->mode_config.fb_list));
4776 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
4777 drm_framebuffer_remove(fb);
4780 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
4782 plane->funcs->destroy(plane);
4785 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
4786 crtc->funcs->destroy(crtc);
4789 idr_destroy(&dev->mode_config.crtc_idr);
4790 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
4792 EXPORT_SYMBOL(drm_mode_config_cleanup);