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/export.h>
36 #include <drm/drm_crtc.h>
37 #include <drm/drm_edid.h>
38 #include <uapi_drm/drm_fourcc.h>
39 #include <linux/slab.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. */
129 if (oops_in_progress)
133 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
134 WARN_ON(!drm_modeset_is_locked(&crtc->mutex));
136 WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
137 WARN_ON(!mutex_is_locked(&dev->mode_config.mutex));
139 EXPORT_SYMBOL(drm_warn_on_modeset_not_all_locked);
141 /* Avoid boilerplate. I'm tired of typing. */
142 #define DRM_ENUM_NAME_FN(fnname, list) \
143 const char *fnname(int val) \
146 for (i = 0; i < ARRAY_SIZE(list); i++) { \
147 if (list[i].type == val) \
148 return list[i].name; \
150 return "(unknown)"; \
156 static const struct drm_prop_enum_list drm_dpms_enum_list[] =
157 { { DRM_MODE_DPMS_ON, "On" },
158 { DRM_MODE_DPMS_STANDBY, "Standby" },
159 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
160 { DRM_MODE_DPMS_OFF, "Off" }
163 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
165 static const struct drm_prop_enum_list drm_plane_type_enum_list[] =
167 { DRM_PLANE_TYPE_OVERLAY, "Overlay" },
168 { DRM_PLANE_TYPE_PRIMARY, "Primary" },
169 { DRM_PLANE_TYPE_CURSOR, "Cursor" },
173 * Optional properties
175 static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
177 { DRM_MODE_SCALE_NONE, "None" },
178 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
179 { DRM_MODE_SCALE_CENTER, "Center" },
180 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
184 * Non-global properties, but "required" for certain connectors.
186 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
188 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
189 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
190 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
193 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
195 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
197 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
198 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
199 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
202 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
203 drm_dvi_i_subconnector_enum_list)
205 static const struct drm_prop_enum_list drm_tv_select_enum_list[] =
207 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
208 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
209 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
210 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
211 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
214 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
216 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
218 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
219 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
220 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
221 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
222 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
225 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
226 drm_tv_subconnector_enum_list)
228 static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
229 { DRM_MODE_DIRTY_OFF, "Off" },
230 { DRM_MODE_DIRTY_ON, "On" },
231 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
234 struct drm_conn_prop_enum_list {
241 * Connector and encoder types.
243 static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
244 { { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
245 { DRM_MODE_CONNECTOR_VGA, "VGA" },
246 { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
247 { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
248 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
249 { DRM_MODE_CONNECTOR_Composite, "Composite" },
250 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
251 { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
252 { DRM_MODE_CONNECTOR_Component, "Component" },
253 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
254 { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
255 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
256 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
257 { DRM_MODE_CONNECTOR_TV, "TV" },
258 { DRM_MODE_CONNECTOR_eDP, "eDP" },
259 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
260 { DRM_MODE_CONNECTOR_DSI, "DSI" },
263 static const struct drm_prop_enum_list drm_encoder_enum_list[] =
264 { { DRM_MODE_ENCODER_NONE, "None" },
265 { DRM_MODE_ENCODER_DAC, "DAC" },
266 { DRM_MODE_ENCODER_TMDS, "TMDS" },
267 { DRM_MODE_ENCODER_LVDS, "LVDS" },
268 { DRM_MODE_ENCODER_TVDAC, "TV" },
269 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
270 { DRM_MODE_ENCODER_DSI, "DSI" },
271 { DRM_MODE_ENCODER_DPMST, "DP MST" },
274 static const struct drm_prop_enum_list drm_subpixel_enum_list[] =
276 { SubPixelUnknown, "Unknown" },
277 { SubPixelHorizontalRGB, "Horizontal RGB" },
278 { SubPixelHorizontalBGR, "Horizontal BGR" },
279 { SubPixelVerticalRGB, "Vertical RGB" },
280 { SubPixelVerticalBGR, "Vertical BGR" },
281 { SubPixelNone, "None" },
284 void drm_connector_ida_init(void)
289 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
290 ida_init(&drm_connector_enum_list[i].ida);
294 void drm_connector_ida_destroy(void)
299 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
300 ida_destroy(&drm_connector_enum_list[i].ida);
305 * drm_get_connector_status_name - return a string for connector status
306 * @status: connector status to compute name of
308 * In contrast to the other drm_get_*_name functions this one here returns a
309 * const pointer and hence is threadsafe.
311 const char *drm_get_connector_status_name(enum drm_connector_status status)
313 if (status == connector_status_connected)
315 else if (status == connector_status_disconnected)
316 return "disconnected";
320 EXPORT_SYMBOL(drm_get_connector_status_name);
323 * drm_get_subpixel_order_name - return a string for a given subpixel enum
324 * @order: enum of subpixel_order
326 * Note you could abuse this and return something out of bounds, but that
327 * would be a caller error. No unscrubbed user data should make it here.
329 const char *drm_get_subpixel_order_name(enum subpixel_order order)
331 return drm_subpixel_enum_list[order].name;
333 EXPORT_SYMBOL(drm_get_subpixel_order_name);
335 static char printable_char(int c)
337 return isascii(c) && isprint(c) ? c : '?';
341 * drm_get_format_name - return a string for drm fourcc format
342 * @format: format to compute name of
344 * Note that the buffer used by this function is globally shared and owned by
345 * the function itself.
347 * FIXME: This isn't really multithreading safe.
349 const char *drm_get_format_name(uint32_t format)
353 ksnprintf(buf, sizeof(buf),
354 "%c%c%c%c %s-endian (0x%08x)",
355 printable_char(format & 0xff),
356 printable_char((format >> 8) & 0xff),
357 printable_char((format >> 16) & 0xff),
358 printable_char((format >> 24) & 0x7f),
359 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
364 EXPORT_SYMBOL(drm_get_format_name);
367 * drm_mode_object_get - allocate a new modeset identifier
369 * @obj: object pointer, used to generate unique ID
370 * @obj_type: object type
372 * Create a unique identifier based on @ptr in @dev's identifier space. Used
373 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
374 * modeset identifiers are _not_ reference counted. Hence don't use this for
375 * reference counted modeset objects like framebuffers.
378 * New unique (relative to other objects in @dev) integer identifier for the
381 int drm_mode_object_get(struct drm_device *dev,
382 struct drm_mode_object *obj, uint32_t obj_type)
386 mutex_lock(&dev->mode_config.idr_mutex);
387 ret = idr_alloc(&dev->mode_config.crtc_idr, obj, 1, 0, GFP_KERNEL);
390 * Set up the object linking under the protection of the idr
391 * lock so that other users can't see inconsistent state.
394 obj->type = obj_type;
396 mutex_unlock(&dev->mode_config.idr_mutex);
398 return ret < 0 ? ret : 0;
402 * drm_mode_object_put - free a modeset identifer
404 * @object: object to free
406 * Free @id from @dev's unique identifier pool. Note that despite the _get
407 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
408 * for reference counted modeset objects like framebuffers.
410 void drm_mode_object_put(struct drm_device *dev,
411 struct drm_mode_object *object)
413 mutex_lock(&dev->mode_config.idr_mutex);
414 idr_remove(&dev->mode_config.crtc_idr, object->id);
415 mutex_unlock(&dev->mode_config.idr_mutex);
418 static struct drm_mode_object *_object_find(struct drm_device *dev,
419 uint32_t id, uint32_t type)
421 struct drm_mode_object *obj = NULL;
423 mutex_lock(&dev->mode_config.idr_mutex);
424 obj = idr_find(&dev->mode_config.crtc_idr, id);
425 if (!obj || (type != DRM_MODE_OBJECT_ANY && obj->type != type) ||
428 mutex_unlock(&dev->mode_config.idr_mutex);
434 * drm_mode_object_find - look up a drm object with static lifetime
436 * @id: id of the mode object
437 * @type: type of the mode object
439 * Note that framebuffers cannot be looked up with this functions - since those
440 * are reference counted, they need special treatment. Even with
441 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
442 * rather than WARN_ON()).
444 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
445 uint32_t id, uint32_t type)
447 struct drm_mode_object *obj = NULL;
449 /* Framebuffers are reference counted and need their own lookup
451 WARN_ON(type == DRM_MODE_OBJECT_FB);
452 obj = _object_find(dev, id, type);
453 /* don't leak out unref'd fb's */
454 if (obj && (obj->type == DRM_MODE_OBJECT_FB))
458 EXPORT_SYMBOL(drm_mode_object_find);
461 * drm_framebuffer_init - initialize a framebuffer
463 * @fb: framebuffer to be initialized
464 * @funcs: ... with these functions
466 * Allocates an ID for the framebuffer's parent mode object, sets its mode
467 * functions & device file and adds it to the master fd list.
470 * This functions publishes the fb and makes it available for concurrent access
471 * by other users. Which means by this point the fb _must_ be fully set up -
472 * since all the fb attributes are invariant over its lifetime, no further
473 * locking but only correct reference counting is required.
476 * Zero on success, error code on failure.
478 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
479 const struct drm_framebuffer_funcs *funcs)
483 mutex_lock(&dev->mode_config.fb_lock);
484 kref_init(&fb->refcount);
485 INIT_LIST_HEAD(&fb->filp_head);
489 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
493 /* Grab the idr reference. */
494 drm_framebuffer_reference(fb);
496 dev->mode_config.num_fb++;
497 list_add(&fb->head, &dev->mode_config.fb_list);
499 mutex_unlock(&dev->mode_config.fb_lock);
503 EXPORT_SYMBOL(drm_framebuffer_init);
505 static void drm_framebuffer_free(struct kref *kref)
507 struct drm_framebuffer *fb =
508 container_of(kref, struct drm_framebuffer, refcount);
509 fb->funcs->destroy(fb);
512 static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
515 struct drm_mode_object *obj = NULL;
516 struct drm_framebuffer *fb;
518 mutex_lock(&dev->mode_config.idr_mutex);
519 obj = idr_find(&dev->mode_config.crtc_idr, id);
520 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
524 mutex_unlock(&dev->mode_config.idr_mutex);
530 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
532 * @id: id of the fb object
534 * If successful, this grabs an additional reference to the framebuffer -
535 * callers need to make sure to eventually unreference the returned framebuffer
536 * again, using @drm_framebuffer_unreference.
538 struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
541 struct drm_framebuffer *fb;
543 mutex_lock(&dev->mode_config.fb_lock);
544 fb = __drm_framebuffer_lookup(dev, id);
546 drm_framebuffer_reference(fb);
547 mutex_unlock(&dev->mode_config.fb_lock);
551 EXPORT_SYMBOL(drm_framebuffer_lookup);
554 * drm_framebuffer_unreference - unref a framebuffer
555 * @fb: framebuffer to unref
557 * This functions decrements the fb's refcount and frees it if it drops to zero.
559 void drm_framebuffer_unreference(struct drm_framebuffer *fb)
561 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
562 kref_put(&fb->refcount, drm_framebuffer_free);
564 EXPORT_SYMBOL(drm_framebuffer_unreference);
567 * drm_framebuffer_reference - incr the fb refcnt
570 * This functions increments the fb's refcount.
572 void drm_framebuffer_reference(struct drm_framebuffer *fb)
574 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
575 kref_get(&fb->refcount);
577 EXPORT_SYMBOL(drm_framebuffer_reference);
579 static void drm_framebuffer_free_bug(struct kref *kref)
584 static void __drm_framebuffer_unreference(struct drm_framebuffer *fb)
586 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
587 kref_put(&fb->refcount, drm_framebuffer_free_bug);
590 /* dev->mode_config.fb_lock must be held! */
591 static void __drm_framebuffer_unregister(struct drm_device *dev,
592 struct drm_framebuffer *fb)
594 mutex_lock(&dev->mode_config.idr_mutex);
595 idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
596 mutex_unlock(&dev->mode_config.idr_mutex);
600 __drm_framebuffer_unreference(fb);
604 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
605 * @fb: fb to unregister
607 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
608 * those used for fbdev. Note that the caller must hold a reference of it's own,
609 * i.e. the object may not be destroyed through this call (since it'll lead to a
610 * locking inversion).
612 void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
614 struct drm_device *dev = fb->dev;
616 mutex_lock(&dev->mode_config.fb_lock);
617 /* Mark fb as reaped and drop idr ref. */
618 __drm_framebuffer_unregister(dev, fb);
619 mutex_unlock(&dev->mode_config.fb_lock);
621 EXPORT_SYMBOL(drm_framebuffer_unregister_private);
624 * drm_framebuffer_cleanup - remove a framebuffer object
625 * @fb: framebuffer to remove
627 * Cleanup framebuffer. This function is intended to be used from the drivers
628 * ->destroy callback. It can also be used to clean up driver private
629 * framebuffers embedded into a larger structure.
631 * Note that this function does not remove the fb from active usuage - if it is
632 * still used anywhere, hilarity can ensue since userspace could call getfb on
633 * the id and get back -EINVAL. Obviously no concern at driver unload time.
635 * Also, the framebuffer will not be removed from the lookup idr - for
636 * user-created framebuffers this will happen in in the rmfb ioctl. For
637 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
638 * drm_framebuffer_unregister_private.
640 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
642 struct drm_device *dev = fb->dev;
644 mutex_lock(&dev->mode_config.fb_lock);
646 dev->mode_config.num_fb--;
647 mutex_unlock(&dev->mode_config.fb_lock);
649 EXPORT_SYMBOL(drm_framebuffer_cleanup);
652 * drm_framebuffer_remove - remove and unreference a framebuffer object
653 * @fb: framebuffer to remove
655 * Scans all the CRTCs and planes in @dev's mode_config. If they're
656 * using @fb, removes it, setting it to NULL. Then drops the reference to the
657 * passed-in framebuffer. Might take the modeset locks.
659 * Note that this function optimizes the cleanup away if the caller holds the
660 * last reference to the framebuffer. It is also guaranteed to not take the
661 * modeset locks in this case.
663 void drm_framebuffer_remove(struct drm_framebuffer *fb)
665 struct drm_device *dev = fb->dev;
666 struct drm_crtc *crtc;
667 struct drm_plane *plane;
668 struct drm_mode_set set;
671 WARN_ON(!list_empty(&fb->filp_head));
674 * drm ABI mandates that we remove any deleted framebuffers from active
675 * useage. But since most sane clients only remove framebuffers they no
676 * longer need, try to optimize this away.
678 * Since we're holding a reference ourselves, observing a refcount of 1
679 * means that we're the last holder and can skip it. Also, the refcount
680 * can never increase from 1 again, so we don't need any barriers or
683 * Note that userspace could try to race with use and instate a new
684 * usage _after_ we've cleared all current ones. End result will be an
685 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
688 if (atomic_read(&fb->refcount.refcount) > 1) {
689 drm_modeset_lock_all(dev);
690 /* remove from any CRTC */
691 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
692 if (crtc->primary->fb == fb) {
693 /* should turn off the crtc */
694 memset(&set, 0, sizeof(struct drm_mode_set));
697 ret = drm_mode_set_config_internal(&set);
699 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
703 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
705 drm_plane_force_disable(plane);
707 drm_modeset_unlock_all(dev);
710 drm_framebuffer_unreference(fb);
712 EXPORT_SYMBOL(drm_framebuffer_remove);
714 DEFINE_WW_CLASS(crtc_ww_class);
717 * drm_crtc_init_with_planes - Initialise a new CRTC object with
718 * specified primary and cursor planes.
720 * @crtc: CRTC object to init
721 * @primary: Primary plane for CRTC
722 * @cursor: Cursor plane for CRTC
723 * @funcs: callbacks for the new CRTC
725 * Inits a new object created as base part of a driver crtc object.
728 * Zero on success, error code on failure.
730 int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
731 struct drm_plane *primary,
733 const struct drm_crtc_funcs *funcs)
735 struct drm_mode_config *config = &dev->mode_config;
740 crtc->invert_dimensions = false;
742 drm_modeset_lock_all(dev);
743 drm_modeset_lock_init(&crtc->mutex);
744 /* dropped by _unlock_all(): */
745 drm_modeset_lock(&crtc->mutex, config->acquire_ctx);
747 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
751 crtc->base.properties = &crtc->properties;
753 list_add_tail(&crtc->head, &config->crtc_list);
756 crtc->primary = primary;
758 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
761 drm_modeset_unlock_all(dev);
765 EXPORT_SYMBOL(drm_crtc_init_with_planes);
768 * drm_crtc_cleanup - Clean up the core crtc usage
769 * @crtc: CRTC to cleanup
771 * This function cleans up @crtc and removes it from the DRM mode setting
772 * core. Note that the function does *not* free the crtc structure itself,
773 * this is the responsibility of the caller.
775 void drm_crtc_cleanup(struct drm_crtc *crtc)
777 struct drm_device *dev = crtc->dev;
779 kfree(crtc->gamma_store);
780 crtc->gamma_store = NULL;
782 drm_modeset_lock_fini(&crtc->mutex);
784 drm_mode_object_put(dev, &crtc->base);
785 list_del(&crtc->head);
786 dev->mode_config.num_crtc--;
788 EXPORT_SYMBOL(drm_crtc_cleanup);
791 * drm_crtc_index - find the index of a registered CRTC
792 * @crtc: CRTC to find index for
794 * Given a registered CRTC, return the index of that CRTC within a DRM
795 * device's list of CRTCs.
797 unsigned int drm_crtc_index(struct drm_crtc *crtc)
799 unsigned int index = 0;
800 struct drm_crtc *tmp;
802 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
811 EXPORT_SYMBOL(drm_crtc_index);
814 * drm_mode_remove - remove and free a mode
815 * @connector: connector list to modify
816 * @mode: mode to remove
818 * Remove @mode from @connector's mode list, then free it.
820 static void drm_mode_remove(struct drm_connector *connector,
821 struct drm_display_mode *mode)
823 list_del(&mode->head);
824 drm_mode_destroy(connector->dev, mode);
828 * drm_connector_init - Init a preallocated connector
830 * @connector: the connector to init
831 * @funcs: callbacks for this connector
832 * @connector_type: user visible type of the connector
834 * Initialises a preallocated connector. Connectors should be
835 * subclassed as part of driver connector objects.
838 * Zero on success, error code on failure.
840 int drm_connector_init(struct drm_device *dev,
841 struct drm_connector *connector,
842 const struct drm_connector_funcs *funcs,
847 drm_modeset_lock_all(dev);
849 ret = drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
853 connector->base.properties = &connector->properties;
854 connector->dev = dev;
855 connector->funcs = funcs;
856 connector->connector_type = connector_type;
857 connector->connector_type_id =
858 ++drm_connector_enum_list[connector_type].count; /* TODO */
859 if (connector->connector_type_id < 0) {
860 ret = connector->connector_type_id;
864 INIT_LIST_HEAD(&connector->probed_modes);
865 INIT_LIST_HEAD(&connector->modes);
866 connector->edid_blob_ptr = NULL;
867 connector->status = connector_status_unknown;
869 list_add_tail(&connector->head, &dev->mode_config.connector_list);
870 dev->mode_config.num_connector++;
872 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
873 drm_object_attach_property(&connector->base,
874 dev->mode_config.edid_property,
877 drm_object_attach_property(&connector->base,
878 dev->mode_config.dpms_property, 0);
882 drm_mode_object_put(dev, &connector->base);
885 drm_modeset_unlock_all(dev);
889 EXPORT_SYMBOL(drm_connector_init);
892 * drm_connector_cleanup - cleans up an initialised connector
893 * @connector: connector to cleanup
895 * Cleans up the connector but doesn't free the object.
897 void drm_connector_cleanup(struct drm_connector *connector)
899 struct drm_device *dev = connector->dev;
900 struct drm_display_mode *mode, *t;
902 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
903 drm_mode_remove(connector, mode);
905 list_for_each_entry_safe(mode, t, &connector->modes, head)
906 drm_mode_remove(connector, mode);
908 drm_mode_object_put(dev, &connector->base);
909 list_del(&connector->head);
910 dev->mode_config.num_connector--;
912 EXPORT_SYMBOL(drm_connector_cleanup);
915 * drm_connector_unplug_all - unregister connector userspace interfaces
918 * This function unregisters all connector userspace interfaces in sysfs. Should
919 * be call when the device is disconnected, e.g. from an usb driver's
920 * ->disconnect callback.
922 void drm_connector_unplug_all(struct drm_device *dev)
924 struct drm_connector *connector;
926 /* taking the mode config mutex ends up in a clash with sysfs */
927 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
928 drm_sysfs_connector_remove(connector);
931 EXPORT_SYMBOL(drm_connector_unplug_all);
934 * drm_bridge_init - initialize a drm transcoder/bridge
936 * @bridge: transcoder/bridge to set up
937 * @funcs: bridge function table
939 * Initialises a preallocated bridge. Bridges should be
940 * subclassed as part of driver connector objects.
943 * Zero on success, error code on failure.
945 int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
946 const struct drm_bridge_funcs *funcs)
950 drm_modeset_lock_all(dev);
952 ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
957 bridge->funcs = funcs;
959 list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
960 dev->mode_config.num_bridge++;
963 drm_modeset_unlock_all(dev);
966 EXPORT_SYMBOL(drm_bridge_init);
969 * drm_bridge_cleanup - cleans up an initialised bridge
970 * @bridge: bridge to cleanup
972 * Cleans up the bridge but doesn't free the object.
974 void drm_bridge_cleanup(struct drm_bridge *bridge)
976 struct drm_device *dev = bridge->dev;
978 drm_modeset_lock_all(dev);
979 drm_mode_object_put(dev, &bridge->base);
980 list_del(&bridge->head);
981 dev->mode_config.num_bridge--;
982 drm_modeset_unlock_all(dev);
984 EXPORT_SYMBOL(drm_bridge_cleanup);
987 * drm_encoder_init - Init a preallocated encoder
989 * @encoder: the encoder to init
990 * @funcs: callbacks for this encoder
991 * @encoder_type: user visible type of the encoder
993 * Initialises a preallocated encoder. Encoder should be
994 * subclassed as part of driver encoder objects.
997 * Zero on success, error code on failure.
999 int drm_encoder_init(struct drm_device *dev,
1000 struct drm_encoder *encoder,
1001 const struct drm_encoder_funcs *funcs,
1006 drm_modeset_lock_all(dev);
1008 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1013 encoder->encoder_type = encoder_type;
1014 encoder->funcs = funcs;
1016 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1017 dev->mode_config.num_encoder++;
1020 drm_modeset_unlock_all(dev);
1024 EXPORT_SYMBOL(drm_encoder_init);
1027 * drm_encoder_cleanup - cleans up an initialised encoder
1028 * @encoder: encoder to cleanup
1030 * Cleans up the encoder but doesn't free the object.
1032 void drm_encoder_cleanup(struct drm_encoder *encoder)
1034 struct drm_device *dev = encoder->dev;
1035 drm_modeset_lock_all(dev);
1036 drm_mode_object_put(dev, &encoder->base);
1037 kfree(encoder->name);
1038 encoder->name = NULL;
1039 list_del(&encoder->head);
1040 dev->mode_config.num_encoder--;
1041 drm_modeset_unlock_all(dev);
1043 EXPORT_SYMBOL(drm_encoder_cleanup);
1046 * drm_universal_plane_init - Initialize a new universal plane object
1048 * @plane: plane object to init
1049 * @possible_crtcs: bitmask of possible CRTCs
1050 * @funcs: callbacks for the new plane
1051 * @formats: array of supported formats (%DRM_FORMAT_*)
1052 * @format_count: number of elements in @formats
1053 * @type: type of plane (overlay, primary, cursor)
1055 * Initializes a plane object of type @type.
1058 * Zero on success, error code on failure.
1060 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1061 unsigned long possible_crtcs,
1062 const struct drm_plane_funcs *funcs,
1063 const uint32_t *formats, uint32_t format_count,
1064 enum drm_plane_type type)
1068 drm_modeset_lock_all(dev);
1070 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1074 plane->base.properties = &plane->properties;
1076 plane->funcs = funcs;
1077 plane->format_types = kmalloc(sizeof(uint32_t) * format_count,
1079 if (!plane->format_types) {
1080 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1081 drm_mode_object_put(dev, &plane->base);
1086 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1087 plane->format_count = format_count;
1088 plane->possible_crtcs = possible_crtcs;
1091 list_add_tail(&plane->head, &dev->mode_config.plane_list);
1092 dev->mode_config.num_total_plane++;
1093 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1094 dev->mode_config.num_overlay_plane++;
1096 drm_object_attach_property(&plane->base,
1097 dev->mode_config.plane_type_property,
1101 drm_modeset_unlock_all(dev);
1105 EXPORT_SYMBOL(drm_universal_plane_init);
1108 * drm_plane_init - Initialize a legacy plane
1110 * @plane: plane object to init
1111 * @possible_crtcs: bitmask of possible CRTCs
1112 * @funcs: callbacks for the new plane
1113 * @formats: array of supported formats (%DRM_FORMAT_*)
1114 * @format_count: number of elements in @formats
1115 * @is_primary: plane type (primary vs overlay)
1117 * Legacy API to initialize a DRM plane.
1119 * New drivers should call drm_universal_plane_init() instead.
1122 * Zero on success, error code on failure.
1124 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1125 unsigned long possible_crtcs,
1126 const struct drm_plane_funcs *funcs,
1127 const uint32_t *formats, uint32_t format_count,
1130 enum drm_plane_type type;
1132 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1133 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1134 formats, format_count, type);
1136 EXPORT_SYMBOL(drm_plane_init);
1139 * drm_plane_cleanup - Clean up the core plane usage
1140 * @plane: plane to cleanup
1142 * This function cleans up @plane and removes it from the DRM mode setting
1143 * core. Note that the function does *not* free the plane structure itself,
1144 * this is the responsibility of the caller.
1146 void drm_plane_cleanup(struct drm_plane *plane)
1148 struct drm_device *dev = plane->dev;
1150 drm_modeset_lock_all(dev);
1151 kfree(plane->format_types);
1152 drm_mode_object_put(dev, &plane->base);
1154 BUG_ON(list_empty(&plane->head));
1156 list_del(&plane->head);
1157 dev->mode_config.num_total_plane--;
1158 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1159 dev->mode_config.num_overlay_plane--;
1160 drm_modeset_unlock_all(dev);
1162 EXPORT_SYMBOL(drm_plane_cleanup);
1165 * drm_plane_force_disable - Forcibly disable a plane
1166 * @plane: plane to disable
1168 * Forces the plane to be disabled.
1170 * Used when the plane's current framebuffer is destroyed,
1171 * and when restoring fbdev mode.
1173 void drm_plane_force_disable(struct drm_plane *plane)
1175 struct drm_framebuffer *old_fb = plane->fb;
1181 ret = plane->funcs->disable_plane(plane);
1183 DRM_ERROR("failed to disable plane with busy fb\n");
1186 /* disconnect the plane from the fb and crtc: */
1187 __drm_framebuffer_unreference(old_fb);
1191 EXPORT_SYMBOL(drm_plane_force_disable);
1193 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
1195 struct drm_property *edid;
1196 struct drm_property *dpms;
1199 * Standard properties (apply to all connectors)
1201 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1202 DRM_MODE_PROP_IMMUTABLE,
1204 dev->mode_config.edid_property = edid;
1206 dpms = drm_property_create_enum(dev, 0,
1207 "DPMS", drm_dpms_enum_list,
1208 ARRAY_SIZE(drm_dpms_enum_list));
1209 dev->mode_config.dpms_property = dpms;
1214 static int drm_mode_create_standard_plane_properties(struct drm_device *dev)
1216 struct drm_property *type;
1219 * Standard properties (apply to all planes)
1221 type = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1222 "type", drm_plane_type_enum_list,
1223 ARRAY_SIZE(drm_plane_type_enum_list));
1224 dev->mode_config.plane_type_property = type;
1230 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1233 * Called by a driver the first time a DVI-I connector is made.
1235 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1237 struct drm_property *dvi_i_selector;
1238 struct drm_property *dvi_i_subconnector;
1240 if (dev->mode_config.dvi_i_select_subconnector_property)
1244 drm_property_create_enum(dev, 0,
1245 "select subconnector",
1246 drm_dvi_i_select_enum_list,
1247 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1248 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1250 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1252 drm_dvi_i_subconnector_enum_list,
1253 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1254 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1258 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1261 * drm_create_tv_properties - create TV specific connector properties
1263 * @num_modes: number of different TV formats (modes) supported
1264 * @modes: array of pointers to strings containing name of each format
1266 * Called by a driver's TV initialization routine, this function creates
1267 * the TV specific connector properties for a given device. Caller is
1268 * responsible for allocating a list of format names and passing them to
1271 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
1274 struct drm_property *tv_selector;
1275 struct drm_property *tv_subconnector;
1278 if (dev->mode_config.tv_select_subconnector_property)
1282 * Basic connector properties
1284 tv_selector = drm_property_create_enum(dev, 0,
1285 "select subconnector",
1286 drm_tv_select_enum_list,
1287 ARRAY_SIZE(drm_tv_select_enum_list));
1288 dev->mode_config.tv_select_subconnector_property = tv_selector;
1291 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1293 drm_tv_subconnector_enum_list,
1294 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1295 dev->mode_config.tv_subconnector_property = tv_subconnector;
1298 * Other, TV specific properties: margins & TV modes.
1300 dev->mode_config.tv_left_margin_property =
1301 drm_property_create_range(dev, 0, "left margin", 0, 100);
1303 dev->mode_config.tv_right_margin_property =
1304 drm_property_create_range(dev, 0, "right margin", 0, 100);
1306 dev->mode_config.tv_top_margin_property =
1307 drm_property_create_range(dev, 0, "top margin", 0, 100);
1309 dev->mode_config.tv_bottom_margin_property =
1310 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1312 dev->mode_config.tv_mode_property =
1313 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1315 for (i = 0; i < num_modes; i++)
1316 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1319 dev->mode_config.tv_brightness_property =
1320 drm_property_create_range(dev, 0, "brightness", 0, 100);
1322 dev->mode_config.tv_contrast_property =
1323 drm_property_create_range(dev, 0, "contrast", 0, 100);
1325 dev->mode_config.tv_flicker_reduction_property =
1326 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1328 dev->mode_config.tv_overscan_property =
1329 drm_property_create_range(dev, 0, "overscan", 0, 100);
1331 dev->mode_config.tv_saturation_property =
1332 drm_property_create_range(dev, 0, "saturation", 0, 100);
1334 dev->mode_config.tv_hue_property =
1335 drm_property_create_range(dev, 0, "hue", 0, 100);
1339 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1342 * drm_mode_create_scaling_mode_property - create scaling mode property
1345 * Called by a driver the first time it's needed, must be attached to desired
1348 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1350 struct drm_property *scaling_mode;
1352 if (dev->mode_config.scaling_mode_property)
1356 drm_property_create_enum(dev, 0, "scaling mode",
1357 drm_scaling_mode_enum_list,
1358 ARRAY_SIZE(drm_scaling_mode_enum_list));
1360 dev->mode_config.scaling_mode_property = scaling_mode;
1364 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1367 * drm_mode_create_dirty_property - create dirty property
1370 * Called by a driver the first time it's needed, must be attached to desired
1373 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1375 struct drm_property *dirty_info;
1377 if (dev->mode_config.dirty_info_property)
1381 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1383 drm_dirty_info_enum_list,
1384 ARRAY_SIZE(drm_dirty_info_enum_list));
1385 dev->mode_config.dirty_info_property = dirty_info;
1389 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1391 static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
1393 uint32_t total_objects = 0;
1395 total_objects += dev->mode_config.num_crtc;
1396 total_objects += dev->mode_config.num_connector;
1397 total_objects += dev->mode_config.num_encoder;
1398 total_objects += dev->mode_config.num_bridge;
1400 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
1401 if (!group->id_list)
1404 group->num_crtcs = 0;
1405 group->num_connectors = 0;
1406 group->num_encoders = 0;
1407 group->num_bridges = 0;
1411 void drm_mode_group_destroy(struct drm_mode_group *group)
1413 kfree(group->id_list);
1414 group->id_list = NULL;
1418 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1419 * the drm core's responsibility to set up mode control groups.
1421 int drm_mode_group_init_legacy_group(struct drm_device *dev,
1422 struct drm_mode_group *group)
1424 struct drm_crtc *crtc;
1425 struct drm_encoder *encoder;
1426 struct drm_connector *connector;
1427 struct drm_bridge *bridge;
1430 if ((ret = drm_mode_group_init(dev, group)))
1433 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1434 group->id_list[group->num_crtcs++] = crtc->base.id;
1436 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1437 group->id_list[group->num_crtcs + group->num_encoders++] =
1440 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1441 group->id_list[group->num_crtcs + group->num_encoders +
1442 group->num_connectors++] = connector->base.id;
1444 list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
1445 group->id_list[group->num_crtcs + group->num_encoders +
1446 group->num_connectors + group->num_bridges++] =
1451 EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
1454 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1455 * @out: drm_mode_modeinfo struct to return to the user
1456 * @in: drm_display_mode to use
1458 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1461 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1462 const struct drm_display_mode *in)
1464 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1465 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1466 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1467 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1468 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1469 "timing values too large for mode info\n");
1471 out->clock = in->clock;
1472 out->hdisplay = in->hdisplay;
1473 out->hsync_start = in->hsync_start;
1474 out->hsync_end = in->hsync_end;
1475 out->htotal = in->htotal;
1476 out->hskew = in->hskew;
1477 out->vdisplay = in->vdisplay;
1478 out->vsync_start = in->vsync_start;
1479 out->vsync_end = in->vsync_end;
1480 out->vtotal = in->vtotal;
1481 out->vscan = in->vscan;
1482 out->vrefresh = in->vrefresh;
1483 out->flags = in->flags;
1484 out->type = in->type;
1485 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1486 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1490 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1491 * @out: drm_display_mode to return to the user
1492 * @in: drm_mode_modeinfo to use
1494 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1498 * Zero on success, errno on failure.
1500 static int drm_crtc_convert_umode(struct drm_display_mode *out,
1501 const struct drm_mode_modeinfo *in)
1503 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1506 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1509 out->clock = in->clock;
1510 out->hdisplay = in->hdisplay;
1511 out->hsync_start = in->hsync_start;
1512 out->hsync_end = in->hsync_end;
1513 out->htotal = in->htotal;
1514 out->hskew = in->hskew;
1515 out->vdisplay = in->vdisplay;
1516 out->vsync_start = in->vsync_start;
1517 out->vsync_end = in->vsync_end;
1518 out->vtotal = in->vtotal;
1519 out->vscan = in->vscan;
1520 out->vrefresh = in->vrefresh;
1521 out->flags = in->flags;
1522 out->type = in->type;
1523 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1524 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1530 * drm_mode_getresources - get graphics configuration
1531 * @dev: drm device for the ioctl
1532 * @data: data pointer for the ioctl
1533 * @file_priv: drm file for the ioctl call
1535 * Construct a set of configuration description structures and return
1536 * them to the user, including CRTC, connector and framebuffer configuration.
1538 * Called by the user via ioctl.
1541 * Zero on success, errno on failure.
1543 int drm_mode_getresources(struct drm_device *dev, void *data,
1544 struct drm_file *file_priv)
1546 struct drm_mode_card_res *card_res = data;
1547 struct list_head *lh;
1548 struct drm_framebuffer *fb;
1549 struct drm_connector *connector;
1550 struct drm_crtc *crtc;
1551 struct drm_encoder *encoder;
1553 int connector_count = 0;
1556 int encoder_count = 0;
1558 uint32_t __user *fb_id;
1559 uint32_t __user *crtc_id;
1560 uint32_t __user *connector_id;
1561 uint32_t __user *encoder_id;
1562 struct drm_mode_group *mode_group;
1564 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1568 mutex_lock(&file_priv->fbs_lock);
1570 * For the non-control nodes we need to limit the list of resources
1571 * by IDs in the group list for this node
1573 list_for_each(lh, &file_priv->fbs)
1576 /* handle this in 4 parts */
1578 if (card_res->count_fbs >= fb_count) {
1580 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1581 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1582 if (put_user(fb->base.id, fb_id + copied)) {
1583 mutex_unlock(&file_priv->fbs_lock);
1589 card_res->count_fbs = fb_count;
1590 mutex_unlock(&file_priv->fbs_lock);
1592 drm_modeset_lock_all(dev);
1593 if (!drm_is_primary_client(file_priv)) {
1596 list_for_each(lh, &dev->mode_config.crtc_list)
1599 list_for_each(lh, &dev->mode_config.connector_list)
1602 list_for_each(lh, &dev->mode_config.encoder_list)
1606 crtc_count = mode_group->num_crtcs;
1607 connector_count = mode_group->num_connectors;
1608 encoder_count = mode_group->num_encoders;
1611 card_res->max_height = dev->mode_config.max_height;
1612 card_res->min_height = dev->mode_config.min_height;
1613 card_res->max_width = dev->mode_config.max_width;
1614 card_res->min_width = dev->mode_config.min_width;
1617 if (card_res->count_crtcs >= crtc_count) {
1619 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1621 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1623 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1624 if (put_user(crtc->base.id, crtc_id + copied)) {
1631 for (i = 0; i < mode_group->num_crtcs; i++) {
1632 if (put_user(mode_group->id_list[i],
1633 crtc_id + copied)) {
1641 card_res->count_crtcs = crtc_count;
1644 if (card_res->count_encoders >= encoder_count) {
1646 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1648 list_for_each_entry(encoder,
1649 &dev->mode_config.encoder_list,
1651 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1653 if (put_user(encoder->base.id, encoder_id +
1661 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1662 if (put_user(mode_group->id_list[i],
1663 encoder_id + copied)) {
1672 card_res->count_encoders = encoder_count;
1675 if (card_res->count_connectors >= connector_count) {
1677 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1679 list_for_each_entry(connector,
1680 &dev->mode_config.connector_list,
1682 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1685 if (put_user(connector->base.id,
1686 connector_id + copied)) {
1693 int start = mode_group->num_crtcs +
1694 mode_group->num_encoders;
1695 for (i = start; i < start + mode_group->num_connectors; i++) {
1696 if (put_user(mode_group->id_list[i],
1697 connector_id + copied)) {
1705 card_res->count_connectors = connector_count;
1707 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1708 card_res->count_connectors, card_res->count_encoders);
1711 drm_modeset_unlock_all(dev);
1716 * drm_mode_getcrtc - get CRTC configuration
1717 * @dev: drm device for the ioctl
1718 * @data: data pointer for the ioctl
1719 * @file_priv: drm file for the ioctl call
1721 * Construct a CRTC configuration structure to return to the user.
1723 * Called by the user via ioctl.
1726 * Zero on success, errno on failure.
1728 int drm_mode_getcrtc(struct drm_device *dev,
1729 void *data, struct drm_file *file_priv)
1731 struct drm_mode_crtc *crtc_resp = data;
1732 struct drm_crtc *crtc;
1735 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1738 drm_modeset_lock_all(dev);
1740 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
1746 crtc_resp->x = crtc->x;
1747 crtc_resp->y = crtc->y;
1748 crtc_resp->gamma_size = crtc->gamma_size;
1749 if (crtc->primary->fb)
1750 crtc_resp->fb_id = crtc->primary->fb->base.id;
1752 crtc_resp->fb_id = 0;
1754 if (crtc->enabled) {
1756 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1757 crtc_resp->mode_valid = 1;
1760 crtc_resp->mode_valid = 0;
1764 drm_modeset_unlock_all(dev);
1768 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1769 const struct drm_file *file_priv)
1772 * If user-space hasn't configured the driver to expose the stereo 3D
1773 * modes, don't expose them.
1775 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1782 * drm_mode_getconnector - get connector configuration
1783 * @dev: drm device for the ioctl
1784 * @data: data pointer for the ioctl
1785 * @file_priv: drm file for the ioctl call
1787 * Construct a connector configuration structure to return to the user.
1789 * Called by the user via ioctl.
1792 * Zero on success, errno on failure.
1794 int drm_mode_getconnector(struct drm_device *dev, void *data,
1795 struct drm_file *file_priv)
1797 struct drm_mode_get_connector *out_resp = data;
1798 struct drm_connector *connector;
1799 struct drm_display_mode *mode;
1801 int props_count = 0;
1802 int encoders_count = 0;
1806 struct drm_mode_modeinfo u_mode;
1807 struct drm_mode_modeinfo __user *mode_ptr;
1808 uint32_t __user *prop_ptr;
1809 uint64_t __user *prop_values;
1810 uint32_t __user *encoder_ptr;
1812 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1815 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1817 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1819 mutex_lock(&dev->mode_config.mutex);
1820 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
1822 connector = drm_connector_find(dev, out_resp->connector_id);
1828 props_count = connector->properties.count;
1830 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1831 if (connector->encoder_ids[i] != 0) {
1836 if (out_resp->count_modes == 0) {
1837 connector->funcs->fill_modes(connector,
1838 dev->mode_config.max_width,
1839 dev->mode_config.max_height);
1842 /* delayed so we get modes regardless of pre-fill_modes state */
1843 list_for_each_entry(mode, &connector->modes, head)
1844 if (drm_mode_expose_to_userspace(mode, file_priv))
1847 out_resp->connector_id = connector->base.id;
1848 out_resp->connector_type = connector->connector_type;
1849 out_resp->connector_type_id = connector->connector_type_id;
1850 out_resp->mm_width = connector->display_info.width_mm;
1851 out_resp->mm_height = connector->display_info.height_mm;
1852 out_resp->subpixel = connector->display_info.subpixel_order;
1853 out_resp->connection = connector->status;
1854 if (connector->encoder)
1855 out_resp->encoder_id = connector->encoder->base.id;
1857 out_resp->encoder_id = 0;
1860 * This ioctl is called twice, once to determine how much space is
1861 * needed, and the 2nd time to fill it.
1863 if ((out_resp->count_modes >= mode_count) && mode_count) {
1865 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
1866 list_for_each_entry(mode, &connector->modes, head) {
1867 if (!drm_mode_expose_to_userspace(mode, file_priv))
1870 drm_crtc_convert_to_umode(&u_mode, mode);
1871 if (copy_to_user(mode_ptr + copied,
1872 &u_mode, sizeof(u_mode))) {
1879 out_resp->count_modes = mode_count;
1881 if ((out_resp->count_props >= props_count) && props_count) {
1883 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
1884 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
1885 for (i = 0; i < connector->properties.count; i++) {
1886 if (put_user(connector->properties.ids[i],
1887 prop_ptr + copied)) {
1892 if (put_user(connector->properties.values[i],
1893 prop_values + copied)) {
1900 out_resp->count_props = props_count;
1902 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1904 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
1905 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1906 if (connector->encoder_ids[i] != 0) {
1907 if (put_user(connector->encoder_ids[i],
1908 encoder_ptr + copied)) {
1916 out_resp->count_encoders = encoders_count;
1919 drm_modeset_unlock(&dev->mode_config.connection_mutex);
1920 mutex_unlock(&dev->mode_config.mutex);
1926 * drm_mode_getencoder - get encoder configuration
1927 * @dev: drm device for the ioctl
1928 * @data: data pointer for the ioctl
1929 * @file_priv: drm file for the ioctl call
1931 * Construct a encoder configuration structure to return to the user.
1933 * Called by the user via ioctl.
1936 * Zero on success, errno on failure.
1938 int drm_mode_getencoder(struct drm_device *dev, void *data,
1939 struct drm_file *file_priv)
1941 struct drm_mode_get_encoder *enc_resp = data;
1942 struct drm_encoder *encoder;
1945 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1948 drm_modeset_lock_all(dev);
1949 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
1956 enc_resp->crtc_id = encoder->crtc->base.id;
1958 enc_resp->crtc_id = 0;
1959 enc_resp->encoder_type = encoder->encoder_type;
1960 enc_resp->encoder_id = encoder->base.id;
1961 enc_resp->possible_crtcs = encoder->possible_crtcs;
1962 enc_resp->possible_clones = encoder->possible_clones;
1965 drm_modeset_unlock_all(dev);
1970 * drm_mode_getplane_res - enumerate all plane resources
1973 * @file_priv: DRM file info
1975 * Construct a list of plane ids to return to the user.
1977 * Called by the user via ioctl.
1980 * Zero on success, errno on failure.
1982 int drm_mode_getplane_res(struct drm_device *dev, void *data,
1983 struct drm_file *file_priv)
1985 struct drm_mode_get_plane_res *plane_resp = data;
1986 struct drm_mode_config *config;
1987 struct drm_plane *plane;
1988 uint32_t __user *plane_ptr;
1989 int copied = 0, ret = 0;
1990 unsigned num_planes;
1992 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1995 drm_modeset_lock_all(dev);
1996 config = &dev->mode_config;
1998 if (file_priv->universal_planes)
1999 num_planes = config->num_total_plane;
2001 num_planes = config->num_overlay_plane;
2004 * This ioctl is called twice, once to determine how much space is
2005 * needed, and the 2nd time to fill it.
2008 (plane_resp->count_planes >= num_planes)) {
2009 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2011 list_for_each_entry(plane, &config->plane_list, head) {
2013 * Unless userspace set the 'universal planes'
2014 * capability bit, only advertise overlays.
2016 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2017 !file_priv->universal_planes)
2020 if (put_user(plane->base.id, plane_ptr + copied)) {
2027 plane_resp->count_planes = num_planes;
2030 drm_modeset_unlock_all(dev);
2035 * drm_mode_getplane - get plane configuration
2038 * @file_priv: DRM file info
2040 * Construct a plane configuration structure to return to the user.
2042 * Called by the user via ioctl.
2045 * Zero on success, errno on failure.
2047 int drm_mode_getplane(struct drm_device *dev, void *data,
2048 struct drm_file *file_priv)
2050 struct drm_mode_get_plane *plane_resp = data;
2051 struct drm_plane *plane;
2052 uint32_t __user *format_ptr;
2055 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2058 drm_modeset_lock_all(dev);
2059 plane = drm_plane_find(dev, plane_resp->plane_id);
2066 plane_resp->crtc_id = plane->crtc->base.id;
2068 plane_resp->crtc_id = 0;
2071 plane_resp->fb_id = plane->fb->base.id;
2073 plane_resp->fb_id = 0;
2075 plane_resp->plane_id = plane->base.id;
2076 plane_resp->possible_crtcs = plane->possible_crtcs;
2077 plane_resp->gamma_size = 0;
2080 * This ioctl is called twice, once to determine how much space is
2081 * needed, and the 2nd time to fill it.
2083 if (plane->format_count &&
2084 (plane_resp->count_format_types >= plane->format_count)) {
2085 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2086 if (copy_to_user(format_ptr,
2087 plane->format_types,
2088 sizeof(uint32_t) * plane->format_count)) {
2093 plane_resp->count_format_types = plane->format_count;
2096 drm_modeset_unlock_all(dev);
2101 * drm_mode_setplane - configure a plane's configuration
2103 * @data: ioctl data*
2104 * @file_priv: DRM file info
2106 * Set plane configuration, including placement, fb, scaling, and other factors.
2107 * Or pass a NULL fb to disable.
2110 * Zero on success, errno on failure.
2112 int drm_mode_setplane(struct drm_device *dev, void *data,
2113 struct drm_file *file_priv)
2115 struct drm_mode_set_plane *plane_req = data;
2116 struct drm_plane *plane;
2117 struct drm_crtc *crtc;
2118 struct drm_framebuffer *fb = NULL, *old_fb = NULL;
2120 unsigned int fb_width, fb_height;
2123 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2127 * First, find the plane, crtc, and fb objects. If not available,
2128 * we don't bother to call the driver.
2130 plane = drm_plane_find(dev, plane_req->plane_id);
2132 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2133 plane_req->plane_id);
2137 /* No fb means shut it down */
2138 if (!plane_req->fb_id) {
2139 drm_modeset_lock_all(dev);
2141 ret = plane->funcs->disable_plane(plane);
2148 drm_modeset_unlock_all(dev);
2152 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2154 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2155 plane_req->crtc_id);
2160 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2162 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2168 /* Check whether this plane supports the fb pixel format. */
2169 for (i = 0; i < plane->format_count; i++)
2170 if (fb->pixel_format == plane->format_types[i])
2172 if (i == plane->format_count) {
2173 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2174 drm_get_format_name(fb->pixel_format));
2179 fb_width = fb->width << 16;
2180 fb_height = fb->height << 16;
2182 /* Make sure source coordinates are inside the fb. */
2183 if (plane_req->src_w > fb_width ||
2184 plane_req->src_x > fb_width - plane_req->src_w ||
2185 plane_req->src_h > fb_height ||
2186 plane_req->src_y > fb_height - plane_req->src_h) {
2187 DRM_DEBUG_KMS("Invalid source coordinates "
2188 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2189 plane_req->src_w >> 16,
2190 ((plane_req->src_w & 0xffff) * 15625) >> 10,
2191 plane_req->src_h >> 16,
2192 ((plane_req->src_h & 0xffff) * 15625) >> 10,
2193 plane_req->src_x >> 16,
2194 ((plane_req->src_x & 0xffff) * 15625) >> 10,
2195 plane_req->src_y >> 16,
2196 ((plane_req->src_y & 0xffff) * 15625) >> 10);
2201 /* Give drivers some help against integer overflows */
2202 if (plane_req->crtc_w > INT_MAX ||
2203 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2204 plane_req->crtc_h > INT_MAX ||
2205 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2206 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2207 plane_req->crtc_w, plane_req->crtc_h,
2208 plane_req->crtc_x, plane_req->crtc_y);
2213 drm_modeset_lock_all(dev);
2215 ret = plane->funcs->update_plane(plane, crtc, fb,
2216 plane_req->crtc_x, plane_req->crtc_y,
2217 plane_req->crtc_w, plane_req->crtc_h,
2218 plane_req->src_x, plane_req->src_y,
2219 plane_req->src_w, plane_req->src_h);
2227 drm_modeset_unlock_all(dev);
2231 drm_framebuffer_unreference(fb);
2233 drm_framebuffer_unreference(old_fb);
2239 * drm_mode_set_config_internal - helper to call ->set_config
2240 * @set: modeset config to set
2242 * This is a little helper to wrap internal calls to the ->set_config driver
2243 * interface. The only thing it adds is correct refcounting dance.
2246 * Zero on success, errno on failure.
2248 int drm_mode_set_config_internal(struct drm_mode_set *set)
2250 struct drm_crtc *crtc = set->crtc;
2251 struct drm_framebuffer *fb;
2252 struct drm_crtc *tmp;
2256 * NOTE: ->set_config can also disable other crtcs (if we steal all
2257 * connectors from it), hence we need to refcount the fbs across all
2258 * crtcs. Atomic modeset will have saner semantics ...
2260 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
2261 tmp->old_fb = tmp->primary->fb;
2265 ret = crtc->funcs->set_config(set);
2267 crtc->primary->crtc = crtc;
2268 crtc->primary->fb = fb;
2271 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
2272 if (tmp->primary->fb)
2273 drm_framebuffer_reference(tmp->primary->fb);
2275 drm_framebuffer_unreference(tmp->old_fb);
2280 EXPORT_SYMBOL(drm_mode_set_config_internal);
2283 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2285 * @crtc: CRTC that framebuffer will be displayed on
2288 * @mode: mode that framebuffer will be displayed under
2289 * @fb: framebuffer to check size of
2291 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2293 const struct drm_display_mode *mode,
2294 const struct drm_framebuffer *fb)
2297 int hdisplay, vdisplay;
2299 hdisplay = mode->hdisplay;
2300 vdisplay = mode->vdisplay;
2302 if (drm_mode_is_stereo(mode)) {
2303 struct drm_display_mode adjusted = *mode;
2305 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE);
2306 hdisplay = adjusted.crtc_hdisplay;
2307 vdisplay = adjusted.crtc_vdisplay;
2310 if (crtc->invert_dimensions)
2311 swap(hdisplay, vdisplay);
2313 if (hdisplay > fb->width ||
2314 vdisplay > fb->height ||
2315 x > fb->width - hdisplay ||
2316 y > fb->height - vdisplay) {
2317 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2318 fb->width, fb->height, hdisplay, vdisplay, x, y,
2319 crtc->invert_dimensions ? " (inverted)" : "");
2325 EXPORT_SYMBOL(drm_crtc_check_viewport);
2328 * drm_mode_setcrtc - set CRTC configuration
2329 * @dev: drm device for the ioctl
2330 * @data: data pointer for the ioctl
2331 * @file_priv: drm file for the ioctl call
2333 * Build a new CRTC configuration based on user request.
2335 * Called by the user via ioctl.
2338 * Zero on success, errno on failure.
2340 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2341 struct drm_file *file_priv)
2343 struct drm_mode_config *config = &dev->mode_config;
2344 struct drm_mode_crtc *crtc_req = data;
2345 struct drm_crtc *crtc;
2346 struct drm_connector **connector_set = NULL, *connector;
2347 struct drm_framebuffer *fb = NULL;
2348 struct drm_display_mode *mode = NULL;
2349 struct drm_mode_set set;
2350 uint32_t __user *set_connectors_ptr;
2354 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2357 /* For some reason crtc x/y offsets are signed internally. */
2358 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2361 drm_modeset_lock_all(dev);
2362 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2364 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2368 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2370 if (crtc_req->mode_valid) {
2371 /* If we have a mode we need a framebuffer. */
2372 /* If we pass -1, set the mode with the currently bound fb */
2373 if (crtc_req->fb_id == -1) {
2374 if (!crtc->primary->fb) {
2375 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2379 fb = crtc->primary->fb;
2380 /* Make refcounting symmetric with the lookup path. */
2381 drm_framebuffer_reference(fb);
2383 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2385 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2392 mode = drm_mode_create(dev);
2398 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2400 DRM_DEBUG_KMS("Invalid mode\n");
2404 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2406 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2413 if (crtc_req->count_connectors == 0 && mode) {
2414 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2419 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2420 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2421 crtc_req->count_connectors);
2426 if (crtc_req->count_connectors > 0) {
2429 /* Avoid unbounded kernel memory allocation */
2430 if (crtc_req->count_connectors > config->num_connector) {
2435 connector_set = kmalloc(crtc_req->count_connectors *
2436 sizeof(struct drm_connector *),
2438 if (!connector_set) {
2443 for (i = 0; i < crtc_req->count_connectors; i++) {
2444 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2445 if (get_user(out_id, &set_connectors_ptr[i])) {
2450 connector = drm_connector_find(dev, out_id);
2452 DRM_DEBUG_KMS("Connector id %d unknown\n",
2457 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2461 connector_set[i] = connector;
2466 set.x = crtc_req->x;
2467 set.y = crtc_req->y;
2469 set.connectors = connector_set;
2470 set.num_connectors = crtc_req->count_connectors;
2472 ret = drm_mode_set_config_internal(&set);
2476 drm_framebuffer_unreference(fb);
2478 kfree(connector_set);
2479 drm_mode_destroy(dev, mode);
2480 drm_modeset_unlock_all(dev);
2484 static int drm_mode_cursor_common(struct drm_device *dev,
2485 struct drm_mode_cursor2 *req,
2486 struct drm_file *file_priv)
2488 struct drm_crtc *crtc;
2491 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2494 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2497 crtc = drm_crtc_find(dev, req->crtc_id);
2499 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2503 drm_modeset_lock(&crtc->mutex, NULL);
2504 if (req->flags & DRM_MODE_CURSOR_BO) {
2505 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
2509 /* Turns off the cursor if handle is 0 */
2510 if (crtc->funcs->cursor_set2)
2511 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2512 req->width, req->height, req->hot_x, req->hot_y);
2514 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2515 req->width, req->height);
2518 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2519 if (crtc->funcs->cursor_move) {
2520 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2527 drm_modeset_unlock(&crtc->mutex);
2535 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2536 * @dev: drm device for the ioctl
2537 * @data: data pointer for the ioctl
2538 * @file_priv: drm file for the ioctl call
2540 * Set the cursor configuration based on user request.
2542 * Called by the user via ioctl.
2545 * Zero on success, errno on failure.
2547 int drm_mode_cursor_ioctl(struct drm_device *dev,
2548 void *data, struct drm_file *file_priv)
2550 struct drm_mode_cursor *req = data;
2551 struct drm_mode_cursor2 new_req;
2553 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2554 new_req.hot_x = new_req.hot_y = 0;
2556 return drm_mode_cursor_common(dev, &new_req, file_priv);
2560 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2561 * @dev: drm device for the ioctl
2562 * @data: data pointer for the ioctl
2563 * @file_priv: drm file for the ioctl call
2565 * Set the cursor configuration based on user request. This implements the 2nd
2566 * version of the cursor ioctl, which allows userspace to additionally specify
2567 * the hotspot of the pointer.
2569 * Called by the user via ioctl.
2572 * Zero on success, errno on failure.
2574 int drm_mode_cursor2_ioctl(struct drm_device *dev,
2575 void *data, struct drm_file *file_priv)
2577 struct drm_mode_cursor2 *req = data;
2578 return drm_mode_cursor_common(dev, req, file_priv);
2582 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2583 * @bpp: bits per pixels
2584 * @depth: bit depth per pixel
2586 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2587 * Useful in fbdev emulation code, since that deals in those values.
2589 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2595 fmt = DRM_FORMAT_C8;
2599 fmt = DRM_FORMAT_XRGB1555;
2601 fmt = DRM_FORMAT_RGB565;
2604 fmt = DRM_FORMAT_RGB888;
2608 fmt = DRM_FORMAT_XRGB8888;
2609 else if (depth == 30)
2610 fmt = DRM_FORMAT_XRGB2101010;
2612 fmt = DRM_FORMAT_ARGB8888;
2615 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2616 fmt = DRM_FORMAT_XRGB8888;
2622 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
2625 * drm_mode_addfb - add an FB to the graphics configuration
2626 * @dev: drm device for the ioctl
2627 * @data: data pointer for the ioctl
2628 * @file_priv: drm file for the ioctl call
2630 * Add a new FB to the specified CRTC, given a user request. This is the
2631 * original addfb ioclt which only supported RGB formats.
2633 * Called by the user via ioctl.
2636 * Zero on success, errno on failure.
2638 int drm_mode_addfb(struct drm_device *dev,
2639 void *data, struct drm_file *file_priv)
2641 struct drm_mode_fb_cmd *or = data;
2642 struct drm_mode_fb_cmd2 r = {};
2643 struct drm_mode_config *config = &dev->mode_config;
2644 struct drm_framebuffer *fb;
2647 /* Use new struct with format internally */
2648 r.fb_id = or->fb_id;
2649 r.width = or->width;
2650 r.height = or->height;
2651 r.pitches[0] = or->pitch;
2652 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
2653 r.handles[0] = or->handle;
2655 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2658 if ((config->min_width > r.width) || (r.width > config->max_width))
2661 if ((config->min_height > r.height) || (r.height > config->max_height))
2664 fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r);
2666 DRM_DEBUG_KMS("could not create framebuffer\n");
2670 mutex_lock(&file_priv->fbs_lock);
2671 or->fb_id = fb->base.id;
2672 list_add(&fb->filp_head, &file_priv->fbs);
2673 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2674 mutex_unlock(&file_priv->fbs_lock);
2679 static int format_check(const struct drm_mode_fb_cmd2 *r)
2681 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
2685 case DRM_FORMAT_RGB332:
2686 case DRM_FORMAT_BGR233:
2687 case DRM_FORMAT_XRGB4444:
2688 case DRM_FORMAT_XBGR4444:
2689 case DRM_FORMAT_RGBX4444:
2690 case DRM_FORMAT_BGRX4444:
2691 case DRM_FORMAT_ARGB4444:
2692 case DRM_FORMAT_ABGR4444:
2693 case DRM_FORMAT_RGBA4444:
2694 case DRM_FORMAT_BGRA4444:
2695 case DRM_FORMAT_XRGB1555:
2696 case DRM_FORMAT_XBGR1555:
2697 case DRM_FORMAT_RGBX5551:
2698 case DRM_FORMAT_BGRX5551:
2699 case DRM_FORMAT_ARGB1555:
2700 case DRM_FORMAT_ABGR1555:
2701 case DRM_FORMAT_RGBA5551:
2702 case DRM_FORMAT_BGRA5551:
2703 case DRM_FORMAT_RGB565:
2704 case DRM_FORMAT_BGR565:
2705 case DRM_FORMAT_RGB888:
2706 case DRM_FORMAT_BGR888:
2707 case DRM_FORMAT_XRGB8888:
2708 case DRM_FORMAT_XBGR8888:
2709 case DRM_FORMAT_RGBX8888:
2710 case DRM_FORMAT_BGRX8888:
2711 case DRM_FORMAT_ARGB8888:
2712 case DRM_FORMAT_ABGR8888:
2713 case DRM_FORMAT_RGBA8888:
2714 case DRM_FORMAT_BGRA8888:
2715 case DRM_FORMAT_XRGB2101010:
2716 case DRM_FORMAT_XBGR2101010:
2717 case DRM_FORMAT_RGBX1010102:
2718 case DRM_FORMAT_BGRX1010102:
2719 case DRM_FORMAT_ARGB2101010:
2720 case DRM_FORMAT_ABGR2101010:
2721 case DRM_FORMAT_RGBA1010102:
2722 case DRM_FORMAT_BGRA1010102:
2723 case DRM_FORMAT_YUYV:
2724 case DRM_FORMAT_YVYU:
2725 case DRM_FORMAT_UYVY:
2726 case DRM_FORMAT_VYUY:
2727 case DRM_FORMAT_AYUV:
2728 case DRM_FORMAT_NV12:
2729 case DRM_FORMAT_NV21:
2730 case DRM_FORMAT_NV16:
2731 case DRM_FORMAT_NV61:
2732 case DRM_FORMAT_NV24:
2733 case DRM_FORMAT_NV42:
2734 case DRM_FORMAT_YUV410:
2735 case DRM_FORMAT_YVU410:
2736 case DRM_FORMAT_YUV411:
2737 case DRM_FORMAT_YVU411:
2738 case DRM_FORMAT_YUV420:
2739 case DRM_FORMAT_YVU420:
2740 case DRM_FORMAT_YUV422:
2741 case DRM_FORMAT_YVU422:
2742 case DRM_FORMAT_YUV444:
2743 case DRM_FORMAT_YVU444:
2746 DRM_DEBUG_KMS("invalid pixel format %s\n",
2747 drm_get_format_name(r->pixel_format));
2752 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
2754 int ret, hsub, vsub, num_planes, i;
2756 ret = format_check(r);
2758 DRM_DEBUG_KMS("bad framebuffer format %s\n",
2759 drm_get_format_name(r->pixel_format));
2763 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
2764 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
2765 num_planes = drm_format_num_planes(r->pixel_format);
2767 if (r->width == 0 || r->width % hsub) {
2768 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->height);
2772 if (r->height == 0 || r->height % vsub) {
2773 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
2777 for (i = 0; i < num_planes; i++) {
2778 unsigned int width = r->width / (i != 0 ? hsub : 1);
2779 unsigned int height = r->height / (i != 0 ? vsub : 1);
2780 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
2782 if (!r->handles[i]) {
2783 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
2787 if ((uint64_t) width * cpp > UINT_MAX)
2790 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
2793 if (r->pitches[i] < width * cpp) {
2794 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
2803 * drm_mode_addfb2 - add an FB to the graphics configuration
2804 * @dev: drm device for the ioctl
2805 * @data: data pointer for the ioctl
2806 * @file_priv: drm file for the ioctl call
2808 * Add a new FB to the specified CRTC, given a user request with format. This is
2809 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
2810 * and uses fourcc codes as pixel format specifiers.
2812 * Called by the user via ioctl.
2815 * Zero on success, errno on failure.
2817 int drm_mode_addfb2(struct drm_device *dev,
2818 void *data, struct drm_file *file_priv)
2820 struct drm_mode_fb_cmd2 *r = data;
2821 struct drm_mode_config *config = &dev->mode_config;
2822 struct drm_framebuffer *fb;
2825 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2828 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
2829 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
2833 if ((config->min_width > r->width) || (r->width > config->max_width)) {
2834 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
2835 r->width, config->min_width, config->max_width);
2838 if ((config->min_height > r->height) || (r->height > config->max_height)) {
2839 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
2840 r->height, config->min_height, config->max_height);
2844 ret = framebuffer_check(r);
2848 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
2850 DRM_DEBUG_KMS("could not create framebuffer\n");
2854 mutex_lock(&file_priv->fbs_lock);
2855 r->fb_id = fb->base.id;
2856 list_add(&fb->filp_head, &file_priv->fbs);
2857 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2858 mutex_unlock(&file_priv->fbs_lock);
2865 * drm_mode_rmfb - remove an FB from the configuration
2866 * @dev: drm device for the ioctl
2867 * @data: data pointer for the ioctl
2868 * @file_priv: drm file for the ioctl call
2870 * Remove the FB specified by the user.
2872 * Called by the user via ioctl.
2875 * Zero on success, errno on failure.
2877 int drm_mode_rmfb(struct drm_device *dev,
2878 void *data, struct drm_file *file_priv)
2880 struct drm_framebuffer *fb = NULL;
2881 struct drm_framebuffer *fbl = NULL;
2882 uint32_t *id = data;
2885 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2888 mutex_lock(&file_priv->fbs_lock);
2889 mutex_lock(&dev->mode_config.fb_lock);
2890 fb = __drm_framebuffer_lookup(dev, *id);
2894 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
2900 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
2901 __drm_framebuffer_unregister(dev, fb);
2903 list_del_init(&fb->filp_head);
2904 mutex_unlock(&dev->mode_config.fb_lock);
2905 mutex_unlock(&file_priv->fbs_lock);
2907 drm_framebuffer_remove(fb);
2912 mutex_unlock(&dev->mode_config.fb_lock);
2913 mutex_unlock(&file_priv->fbs_lock);
2919 * drm_mode_getfb - get FB info
2920 * @dev: drm device for the ioctl
2921 * @data: data pointer for the ioctl
2922 * @file_priv: drm file for the ioctl call
2924 * Lookup the FB given its ID and return info about it.
2926 * Called by the user via ioctl.
2929 * Zero on success, errno on failure.
2931 int drm_mode_getfb(struct drm_device *dev,
2932 void *data, struct drm_file *file_priv)
2934 struct drm_mode_fb_cmd *r = data;
2935 struct drm_framebuffer *fb;
2938 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2941 fb = drm_framebuffer_lookup(dev, r->fb_id);
2945 r->height = fb->height;
2946 r->width = fb->width;
2947 r->depth = fb->depth;
2948 r->bpp = fb->bits_per_pixel;
2949 r->pitch = fb->pitches[0];
2950 if (fb->funcs->create_handle) {
2951 ret = fb->funcs->create_handle(fb, file_priv, &r->handle);
2956 drm_framebuffer_unreference(fb);
2962 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
2963 * @dev: drm device for the ioctl
2964 * @data: data pointer for the ioctl
2965 * @file_priv: drm file for the ioctl call
2967 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
2968 * rectangle list. Generic userspace which does frontbuffer rendering must call
2969 * this ioctl to flush out the changes on manual-update display outputs, e.g.
2970 * usb display-link, mipi manual update panels or edp panel self refresh modes.
2972 * Modesetting drivers which always update the frontbuffer do not need to
2973 * implement the corresponding ->dirty framebuffer callback.
2975 * Called by the user via ioctl.
2978 * Zero on success, errno on failure.
2980 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
2981 void *data, struct drm_file *file_priv)
2983 struct drm_clip_rect __user *clips_ptr;
2984 struct drm_clip_rect *clips = NULL;
2985 struct drm_mode_fb_dirty_cmd *r = data;
2986 struct drm_framebuffer *fb;
2991 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2994 fb = drm_framebuffer_lookup(dev, r->fb_id);
2998 num_clips = r->num_clips;
2999 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3001 if (!num_clips != !clips_ptr) {
3006 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3008 /* If userspace annotates copy, clips must come in pairs */
3009 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3014 if (num_clips && clips_ptr) {
3015 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3019 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
3025 ret = copy_from_user(clips, clips_ptr,
3026 num_clips * sizeof(*clips));
3033 if (fb->funcs->dirty) {
3034 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3043 drm_framebuffer_unreference(fb);
3050 * drm_fb_release - remove and free the FBs on this file
3051 * @priv: drm file for the ioctl
3053 * Destroy all the FBs associated with @filp.
3055 * Called by the user via ioctl.
3058 * Zero on success, errno on failure.
3060 void drm_fb_release(struct drm_file *priv)
3062 struct drm_device *dev = priv->dev;
3063 struct drm_framebuffer *fb, *tfb;
3065 mutex_lock(&priv->fbs_lock);
3066 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3068 mutex_lock(&dev->mode_config.fb_lock);
3069 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3070 __drm_framebuffer_unregister(dev, fb);
3071 mutex_unlock(&dev->mode_config.fb_lock);
3073 list_del_init(&fb->filp_head);
3075 /* This will also drop the fpriv->fbs reference. */
3076 drm_framebuffer_remove(fb);
3078 mutex_unlock(&priv->fbs_lock);
3082 * drm_property_create - create a new property type
3084 * @flags: flags specifying the property type
3085 * @name: name of the property
3086 * @num_values: number of pre-defined values
3088 * This creates a new generic drm property which can then be attached to a drm
3089 * object with drm_object_attach_property. The returned property object must be
3090 * freed with drm_property_destroy.
3093 * A pointer to the newly created property on success, NULL on failure.
3095 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3096 const char *name, int num_values)
3098 struct drm_property *property = NULL;
3101 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3105 property->dev = dev;
3108 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
3109 if (!property->values)
3113 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3117 property->flags = flags;
3118 property->num_values = num_values;
3119 INIT_LIST_HEAD(&property->enum_blob_list);
3122 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3123 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3126 list_add_tail(&property->head, &dev->mode_config.property_list);
3128 WARN_ON(!drm_property_type_valid(property));
3132 kfree(property->values);
3136 EXPORT_SYMBOL(drm_property_create);
3139 * drm_property_create - create a new enumeration property type
3141 * @flags: flags specifying the property type
3142 * @name: name of the property
3143 * @props: enumeration lists with property values
3144 * @num_values: number of pre-defined values
3146 * This creates a new generic drm property which can then be attached to a drm
3147 * object with drm_object_attach_property. The returned property object must be
3148 * freed with drm_property_destroy.
3150 * Userspace is only allowed to set one of the predefined values for enumeration
3154 * A pointer to the newly created property on success, NULL on failure.
3156 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3158 const struct drm_prop_enum_list *props,
3161 struct drm_property *property;
3164 flags |= DRM_MODE_PROP_ENUM;
3166 property = drm_property_create(dev, flags, name, num_values);
3170 for (i = 0; i < num_values; i++) {
3171 ret = drm_property_add_enum(property, i,
3175 drm_property_destroy(dev, property);
3182 EXPORT_SYMBOL(drm_property_create_enum);
3185 * drm_property_create - create a new bitmask property type
3187 * @flags: flags specifying the property type
3188 * @name: name of the property
3189 * @props: enumeration lists with property bitflags
3190 * @num_values: number of pre-defined values
3192 * This creates a new generic drm property which can then be attached to a drm
3193 * object with drm_object_attach_property. The returned property object must be
3194 * freed with drm_property_destroy.
3196 * Compared to plain enumeration properties userspace is allowed to set any
3197 * or'ed together combination of the predefined property bitflag values
3200 * A pointer to the newly created property on success, NULL on failure.
3202 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3203 int flags, const char *name,
3204 const struct drm_prop_enum_list *props,
3207 struct drm_property *property;
3210 flags |= DRM_MODE_PROP_BITMASK;
3212 property = drm_property_create(dev, flags, name, num_values);
3216 for (i = 0; i < num_values; i++) {
3217 ret = drm_property_add_enum(property, i,
3221 drm_property_destroy(dev, property);
3228 EXPORT_SYMBOL(drm_property_create_bitmask);
3230 static struct drm_property *property_create_range(struct drm_device *dev,
3231 int flags, const char *name,
3232 uint64_t min, uint64_t max)
3234 struct drm_property *property;
3236 property = drm_property_create(dev, flags, name, 2);
3240 property->values[0] = min;
3241 property->values[1] = max;
3247 * drm_property_create - create a new ranged property type
3249 * @flags: flags specifying the property type
3250 * @name: name of the property
3251 * @min: minimum value of the property
3252 * @max: maximum value of the property
3254 * This creates a new generic drm property which can then be attached to a drm
3255 * object with drm_object_attach_property. The returned property object must be
3256 * freed with drm_property_destroy.
3258 * Userspace is allowed to set any interger value in the (min, max) range
3262 * A pointer to the newly created property on success, NULL on failure.
3264 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3266 uint64_t min, uint64_t max)
3268 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3271 EXPORT_SYMBOL(drm_property_create_range);
3273 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3274 int flags, const char *name,
3275 int64_t min, int64_t max)
3277 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3278 name, I642U64(min), I642U64(max));
3280 EXPORT_SYMBOL(drm_property_create_signed_range);
3282 struct drm_property *drm_property_create_object(struct drm_device *dev,
3283 int flags, const char *name, uint32_t type)
3285 struct drm_property *property;
3287 flags |= DRM_MODE_PROP_OBJECT;
3289 property = drm_property_create(dev, flags, name, 1);
3293 property->values[0] = type;
3297 EXPORT_SYMBOL(drm_property_create_object);
3300 * drm_property_add_enum - add a possible value to an enumeration property
3301 * @property: enumeration property to change
3302 * @index: index of the new enumeration
3303 * @value: value of the new enumeration
3304 * @name: symbolic name of the new enumeration
3306 * This functions adds enumerations to a property.
3308 * It's use is deprecated, drivers should use one of the more specific helpers
3309 * to directly create the property with all enumerations already attached.
3312 * Zero on success, error code on failure.
3314 int drm_property_add_enum(struct drm_property *property, int index,
3315 uint64_t value, const char *name)
3317 struct drm_property_enum *prop_enum;
3319 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3320 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
3324 * Bitmask enum properties have the additional constraint of values
3327 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3331 if (!list_empty(&property->enum_blob_list)) {
3332 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3333 if (prop_enum->value == value) {
3334 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3335 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3341 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3345 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3346 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3347 prop_enum->value = value;
3349 property->values[index] = value;
3350 list_add_tail(&prop_enum->head, &property->enum_blob_list);
3353 EXPORT_SYMBOL(drm_property_add_enum);
3356 * drm_property_destroy - destroy a drm property
3358 * @property: property to destry
3360 * This function frees a property including any attached resources like
3361 * enumeration values.
3363 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3365 struct drm_property_enum *prop_enum, *pt;
3367 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
3368 list_del(&prop_enum->head);
3372 if (property->num_values)
3373 kfree(property->values);
3374 drm_mode_object_put(dev, &property->base);
3375 list_del(&property->head);
3378 EXPORT_SYMBOL(drm_property_destroy);
3381 * drm_object_attach_property - attach a property to a modeset object
3382 * @obj: drm modeset object
3383 * @property: property to attach
3384 * @init_val: initial value of the property
3386 * This attaches the given property to the modeset object with the given initial
3387 * value. Currently this function cannot fail since the properties are stored in
3388 * a statically sized array.
3390 void drm_object_attach_property(struct drm_mode_object *obj,
3391 struct drm_property *property,
3394 int count = obj->properties->count;
3396 if (count == DRM_OBJECT_MAX_PROPERTY) {
3397 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3398 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3399 "you see this message on the same object type.\n",
3404 obj->properties->ids[count] = property->base.id;
3405 obj->properties->values[count] = init_val;
3406 obj->properties->count++;
3408 EXPORT_SYMBOL(drm_object_attach_property);
3411 * drm_object_property_set_value - set the value of a property
3412 * @obj: drm mode object to set property value for
3413 * @property: property to set
3414 * @val: value the property should be set to
3416 * This functions sets a given property on a given object. This function only
3417 * changes the software state of the property, it does not call into the
3418 * driver's ->set_property callback.
3421 * Zero on success, error code on failure.
3423 int drm_object_property_set_value(struct drm_mode_object *obj,
3424 struct drm_property *property, uint64_t val)
3428 for (i = 0; i < obj->properties->count; i++) {
3429 if (obj->properties->ids[i] == property->base.id) {
3430 obj->properties->values[i] = val;
3437 EXPORT_SYMBOL(drm_object_property_set_value);
3440 * drm_object_property_get_value - retrieve the value of a property
3441 * @obj: drm mode object to get property value from
3442 * @property: property to retrieve
3443 * @val: storage for the property value
3445 * This function retrieves the softare state of the given property for the given
3446 * property. Since there is no driver callback to retrieve the current property
3447 * value this might be out of sync with the hardware, depending upon the driver
3451 * Zero on success, error code on failure.
3453 int drm_object_property_get_value(struct drm_mode_object *obj,
3454 struct drm_property *property, uint64_t *val)
3458 for (i = 0; i < obj->properties->count; i++) {
3459 if (obj->properties->ids[i] == property->base.id) {
3460 *val = obj->properties->values[i];
3467 EXPORT_SYMBOL(drm_object_property_get_value);
3470 * drm_mode_getproperty_ioctl - get the current value of a connector's property
3473 * @file_priv: DRM file info
3475 * This function retrieves the current value for an connectors's property.
3477 * Called by the user via ioctl.
3480 * Zero on success, errno on failure.
3482 int drm_mode_getproperty_ioctl(struct drm_device *dev,
3483 void *data, struct drm_file *file_priv)
3485 struct drm_mode_get_property *out_resp = data;
3486 struct drm_property *property;
3489 int value_count = 0;
3492 struct drm_property_enum *prop_enum;
3493 struct drm_mode_property_enum __user *enum_ptr;
3494 struct drm_property_blob *prop_blob;
3495 uint32_t __user *blob_id_ptr;
3496 uint64_t __user *values_ptr;
3497 uint32_t __user *blob_length_ptr;
3499 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3502 drm_modeset_lock_all(dev);
3503 property = drm_property_find(dev, out_resp->prop_id);
3509 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3510 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3511 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
3513 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
3514 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
3518 value_count = property->num_values;
3520 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
3521 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
3522 out_resp->flags = property->flags;
3524 if ((out_resp->count_values >= value_count) && value_count) {
3525 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
3526 for (i = 0; i < value_count; i++) {
3527 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
3533 out_resp->count_values = value_count;
3535 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3536 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3537 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
3539 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3540 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3542 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
3547 if (copy_to_user(&enum_ptr[copied].name,
3548 &prop_enum->name, DRM_PROP_NAME_LEN)) {
3555 out_resp->count_enum_blobs = enum_count;
3558 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
3559 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
3561 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr;
3562 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr;
3564 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
3565 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
3570 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
3578 out_resp->count_enum_blobs = blob_count;
3581 drm_modeset_unlock_all(dev);
3585 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
3588 struct drm_property_blob *blob;
3591 if (!length || !data)
3594 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
3598 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
3604 blob->length = length;
3606 memcpy(blob->data, data, length);
3608 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
3612 static void drm_property_destroy_blob(struct drm_device *dev,
3613 struct drm_property_blob *blob)
3615 drm_mode_object_put(dev, &blob->base);
3616 list_del(&blob->head);
3621 * drm_mode_getblob_ioctl - get the contents of a blob property value
3624 * @file_priv: DRM file info
3626 * This function retrieves the contents of a blob property. The value stored in
3627 * an object's blob property is just a normal modeset object id.
3629 * Called by the user via ioctl.
3632 * Zero on success, errno on failure.
3634 int drm_mode_getblob_ioctl(struct drm_device *dev,
3635 void *data, struct drm_file *file_priv)
3637 struct drm_mode_get_blob *out_resp = data;
3638 struct drm_property_blob *blob;
3640 void __user *blob_ptr;
3642 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3645 drm_modeset_lock_all(dev);
3646 blob = drm_property_blob_find(dev, out_resp->blob_id);
3652 if (out_resp->length == blob->length) {
3653 blob_ptr = (void __user *)(unsigned long)out_resp->data;
3654 if (copy_to_user(blob_ptr, blob->data, blob->length)){
3659 out_resp->length = blob->length;
3662 drm_modeset_unlock_all(dev);
3667 * drm_mode_connector_update_edid_property - update the edid property of a connector
3668 * @connector: drm connector
3669 * @edid: new value of the edid property
3671 * This function creates a new blob modeset object and assigns its id to the
3672 * connector's edid property.
3675 * Zero on success, errno on failure.
3677 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
3680 struct drm_device *dev = connector->dev;
3683 if (connector->edid_blob_ptr)
3684 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
3686 /* Delete edid, when there is none. */
3688 connector->edid_blob_ptr = NULL;
3689 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
3693 size = EDID_LENGTH * (1 + edid->extensions);
3694 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
3696 if (!connector->edid_blob_ptr)
3699 ret = drm_object_property_set_value(&connector->base,
3700 dev->mode_config.edid_property,
3701 connector->edid_blob_ptr->base.id);
3705 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
3707 static bool drm_property_change_is_valid(struct drm_property *property,
3710 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
3713 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
3714 if (value < property->values[0] || value > property->values[1])
3717 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
3718 int64_t svalue = U642I64(value);
3719 if (svalue < U642I64(property->values[0]) ||
3720 svalue > U642I64(property->values[1]))
3723 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3725 uint64_t valid_mask = 0;
3726 for (i = 0; i < property->num_values; i++)
3727 valid_mask |= (1ULL << property->values[i]);
3728 return !(value & ~valid_mask);
3729 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
3730 /* Only the driver knows */
3732 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
3733 struct drm_mode_object *obj;
3734 /* a zero value for an object property translates to null: */
3738 * NOTE: use _object_find() directly to bypass restriction on
3739 * looking up refcnt'd objects (ie. fb's). For a refcnt'd
3740 * object this could race against object finalization, so it
3741 * simply tells us that the object *was* valid. Which is good
3744 obj = _object_find(property->dev, value, property->values[0]);
3748 for (i = 0; i < property->num_values; i++)
3749 if (property->values[i] == value)
3756 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
3759 * @file_priv: DRM file info
3761 * This function sets the current value for a connectors's property. It also
3762 * calls into a driver's ->set_property callback to update the hardware state
3764 * Called by the user via ioctl.
3767 * Zero on success, errno on failure.
3769 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
3770 void *data, struct drm_file *file_priv)
3772 struct drm_mode_connector_set_property *conn_set_prop = data;
3773 struct drm_mode_obj_set_property obj_set_prop = {
3774 .value = conn_set_prop->value,
3775 .prop_id = conn_set_prop->prop_id,
3776 .obj_id = conn_set_prop->connector_id,
3777 .obj_type = DRM_MODE_OBJECT_CONNECTOR
3780 /* It does all the locking and checking we need */
3781 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
3784 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
3785 struct drm_property *property,
3789 struct drm_connector *connector = obj_to_connector(obj);
3791 /* Do DPMS ourselves */
3792 if (property == connector->dev->mode_config.dpms_property) {
3793 if (connector->funcs->dpms)
3794 (*connector->funcs->dpms)(connector, (int)value);
3796 } else if (connector->funcs->set_property)
3797 ret = connector->funcs->set_property(connector, property, value);
3799 /* store the property value if successful */
3801 drm_object_property_set_value(&connector->base, property, value);
3805 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
3806 struct drm_property *property,
3810 struct drm_crtc *crtc = obj_to_crtc(obj);
3812 if (crtc->funcs->set_property)
3813 ret = crtc->funcs->set_property(crtc, property, value);
3815 drm_object_property_set_value(obj, property, value);
3820 static int drm_mode_plane_set_obj_prop(struct drm_mode_object *obj,
3821 struct drm_property *property,
3825 struct drm_plane *plane = obj_to_plane(obj);
3827 if (plane->funcs->set_property)
3828 ret = plane->funcs->set_property(plane, property, value);
3830 drm_object_property_set_value(obj, property, value);
3836 * drm_mode_getproperty_ioctl - get the current value of a object's property
3839 * @file_priv: DRM file info
3841 * This function retrieves the current value for an object's property. Compared
3842 * to the connector specific ioctl this one is extended to also work on crtc and
3845 * Called by the user via ioctl.
3848 * Zero on success, errno on failure.
3850 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
3851 struct drm_file *file_priv)
3853 struct drm_mode_obj_get_properties *arg = data;
3854 struct drm_mode_object *obj;
3858 int props_count = 0;
3859 uint32_t __user *props_ptr;
3860 uint64_t __user *prop_values_ptr;
3862 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3865 drm_modeset_lock_all(dev);
3867 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
3872 if (!obj->properties) {
3877 props_count = obj->properties->count;
3879 /* This ioctl is called twice, once to determine how much space is
3880 * needed, and the 2nd time to fill it. */
3881 if ((arg->count_props >= props_count) && props_count) {
3883 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
3884 prop_values_ptr = (uint64_t __user *)(unsigned long)
3885 (arg->prop_values_ptr);
3886 for (i = 0; i < props_count; i++) {
3887 if (put_user(obj->properties->ids[i],
3888 props_ptr + copied)) {
3892 if (put_user(obj->properties->values[i],
3893 prop_values_ptr + copied)) {
3900 arg->count_props = props_count;
3902 drm_modeset_unlock_all(dev);
3907 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
3910 * @file_priv: DRM file info
3912 * This function sets the current value for an object's property. It also calls
3913 * into a driver's ->set_property callback to update the hardware state.
3914 * Compared to the connector specific ioctl this one is extended to also work on
3915 * crtc and plane objects.
3917 * Called by the user via ioctl.
3920 * Zero on success, errno on failure.
3922 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
3923 struct drm_file *file_priv)
3925 struct drm_mode_obj_set_property *arg = data;
3926 struct drm_mode_object *arg_obj;
3927 struct drm_mode_object *prop_obj;
3928 struct drm_property *property;
3932 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3935 drm_modeset_lock_all(dev);
3937 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
3942 if (!arg_obj->properties)
3945 for (i = 0; i < arg_obj->properties->count; i++)
3946 if (arg_obj->properties->ids[i] == arg->prop_id)
3949 if (i == arg_obj->properties->count)
3952 prop_obj = drm_mode_object_find(dev, arg->prop_id,
3953 DRM_MODE_OBJECT_PROPERTY);
3958 property = obj_to_property(prop_obj);
3960 if (!drm_property_change_is_valid(property, arg->value))
3963 switch (arg_obj->type) {
3964 case DRM_MODE_OBJECT_CONNECTOR:
3965 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
3968 case DRM_MODE_OBJECT_CRTC:
3969 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
3971 case DRM_MODE_OBJECT_PLANE:
3972 ret = drm_mode_plane_set_obj_prop(arg_obj, property, arg->value);
3977 drm_modeset_unlock_all(dev);
3982 * drm_mode_connector_attach_encoder - attach a connector to an encoder
3983 * @connector: connector to attach
3984 * @encoder: encoder to attach @connector to
3986 * This function links up a connector to an encoder. Note that the routing
3987 * restrictions between encoders and crtcs are exposed to userspace through the
3988 * possible_clones and possible_crtcs bitmasks.
3991 * Zero on success, errno on failure.
3993 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
3994 struct drm_encoder *encoder)
3998 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
3999 if (connector->encoder_ids[i] == 0) {
4000 connector->encoder_ids[i] = encoder->base.id;
4006 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4009 * drm_mode_crtc_set_gamma_size - set the gamma table size
4010 * @crtc: CRTC to set the gamma table size for
4011 * @gamma_size: size of the gamma table
4013 * Drivers which support gamma tables should set this to the supported gamma
4014 * table size when initializing the CRTC. Currently the drm core only supports a
4015 * fixed gamma table size.
4018 * Zero on success, errno on failure.
4020 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
4023 crtc->gamma_size = gamma_size;
4025 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
4026 if (!crtc->gamma_store) {
4027 crtc->gamma_size = 0;
4033 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
4036 * drm_mode_gamma_set_ioctl - set the gamma table
4039 * @file_priv: DRM file info
4041 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4042 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4044 * Called by the user via ioctl.
4047 * Zero on success, errno on failure.
4049 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
4050 void *data, struct drm_file *file_priv)
4052 struct drm_mode_crtc_lut *crtc_lut = data;
4053 struct drm_crtc *crtc;
4054 void *r_base, *g_base, *b_base;
4058 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4061 drm_modeset_lock_all(dev);
4062 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4068 if (crtc->funcs->gamma_set == NULL) {
4073 /* memcpy into gamma store */
4074 if (crtc_lut->gamma_size != crtc->gamma_size) {
4079 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4080 r_base = crtc->gamma_store;
4081 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4086 g_base = (char *)r_base + size;
4087 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4092 b_base = (char *)g_base + size;
4093 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4098 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
4101 drm_modeset_unlock_all(dev);
4107 * drm_mode_gamma_get_ioctl - get the gamma table
4110 * @file_priv: DRM file info
4112 * Copy the current gamma table into the storage provided. This also provides
4113 * the gamma table size the driver expects, which can be used to size the
4114 * allocated storage.
4116 * Called by the user via ioctl.
4119 * Zero on success, errno on failure.
4121 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4122 void *data, struct drm_file *file_priv)
4124 struct drm_mode_crtc_lut *crtc_lut = data;
4125 struct drm_crtc *crtc;
4126 void *r_base, *g_base, *b_base;
4130 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4133 drm_modeset_lock_all(dev);
4134 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4140 /* memcpy into gamma store */
4141 if (crtc_lut->gamma_size != crtc->gamma_size) {
4146 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4147 r_base = crtc->gamma_store;
4148 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4153 g_base = (char *)r_base + size;
4154 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4159 b_base = (char *)g_base + size;
4160 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4165 drm_modeset_unlock_all(dev);
4170 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4173 * @file_priv: DRM file info
4175 * This schedules an asynchronous update on a given CRTC, called page flip.
4176 * Optionally a drm event is generated to signal the completion of the event.
4177 * Generic drivers cannot assume that a pageflip with changed framebuffer
4178 * properties (including driver specific metadata like tiling layout) will work,
4179 * but some drivers support e.g. pixel format changes through the pageflip
4182 * Called by the user via ioctl.
4185 * Zero on success, errno on failure.
4187 int drm_mode_page_flip_ioctl(struct drm_device *dev,
4188 void *data, struct drm_file *file_priv)
4190 struct drm_mode_crtc_page_flip *page_flip = data;
4191 struct drm_crtc *crtc;
4192 struct drm_framebuffer *fb = NULL, *old_fb = NULL;
4193 struct drm_pending_vblank_event *e = NULL;
4196 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4197 page_flip->reserved != 0)
4200 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4203 crtc = drm_crtc_find(dev, page_flip->crtc_id);
4207 drm_modeset_lock(&crtc->mutex, NULL);
4208 if (crtc->primary->fb == NULL) {
4209 /* The framebuffer is currently unbound, presumably
4210 * due to a hotplug event, that userspace has not
4217 if (crtc->funcs->page_flip == NULL)
4220 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
4226 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4230 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
4231 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4236 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4238 lockmgr(&dev->event_lock, LK_EXCLUSIVE);
4239 if (file_priv->event_space < sizeof e->event) {
4240 lockmgr(&dev->event_lock, LK_RELEASE);
4243 file_priv->event_space -= sizeof e->event;
4244 lockmgr(&dev->event_lock, LK_RELEASE);
4246 e = kzalloc(sizeof *e, GFP_KERNEL);
4248 lockmgr(&dev->event_lock, LK_EXCLUSIVE);
4249 file_priv->event_space += sizeof e->event;
4250 lockmgr(&dev->event_lock, LK_RELEASE);
4254 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
4255 e->event.base.length = sizeof e->event;
4256 e->event.user_data = page_flip->user_data;
4257 e->base.event = &e->event.base;
4258 e->base.file_priv = file_priv;
4260 (void (*) (struct drm_pending_event *)) kfree;
4263 old_fb = crtc->primary->fb;
4264 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
4266 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4267 lockmgr(&dev->event_lock, LK_EXCLUSIVE);
4268 file_priv->event_space += sizeof e->event;
4269 lockmgr(&dev->event_lock, LK_RELEASE);
4272 /* Keep the old fb, don't unref it. */
4276 * Warn if the driver hasn't properly updated the crtc->fb
4277 * field to reflect that the new framebuffer is now used.
4278 * Failing to do so will screw with the reference counting
4281 WARN_ON(crtc->primary->fb != fb);
4282 /* Unref only the old framebuffer. */
4288 drm_framebuffer_unreference(fb);
4290 drm_framebuffer_unreference(old_fb);
4291 drm_modeset_unlock(&crtc->mutex);
4297 * drm_mode_config_reset - call ->reset callbacks
4300 * This functions calls all the crtc's, encoder's and connector's ->reset
4301 * callback. Drivers can use this in e.g. their driver load or resume code to
4302 * reset hardware and software state.
4304 void drm_mode_config_reset(struct drm_device *dev)
4306 struct drm_crtc *crtc;
4307 struct drm_encoder *encoder;
4308 struct drm_connector *connector;
4310 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4311 if (crtc->funcs->reset)
4312 crtc->funcs->reset(crtc);
4314 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4315 if (encoder->funcs->reset)
4316 encoder->funcs->reset(encoder);
4318 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4319 connector->status = connector_status_unknown;
4321 if (connector->funcs->reset)
4322 connector->funcs->reset(connector);
4325 EXPORT_SYMBOL(drm_mode_config_reset);
4328 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4331 * @file_priv: DRM file info
4333 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4334 * TTM or something else entirely) and returns the resulting buffer handle. This
4335 * handle can then be wrapped up into a framebuffer modeset object.
4337 * Note that userspace is not allowed to use such objects for render
4338 * acceleration - drivers must create their own private ioctls for such a use
4341 * Called by the user via ioctl.
4344 * Zero on success, errno on failure.
4346 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
4347 void *data, struct drm_file *file_priv)
4349 struct drm_mode_create_dumb *args = data;
4350 u32 cpp, stride, size;
4352 if (!dev->driver->dumb_create)
4354 if (!args->width || !args->height || !args->bpp)
4357 /* overflow checks for 32bit size calculations */
4358 cpp = DIV_ROUND_UP(args->bpp, 8);
4359 if (cpp > 0xffffffffU / args->width)
4361 stride = cpp * args->width;
4362 if (args->height > 0xffffffffU / stride)
4365 /* test for wrap-around */
4366 size = args->height * stride;
4367 if (PAGE_ALIGN(size) == 0)
4370 return dev->driver->dumb_create(file_priv, dev, args);
4374 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4377 * @file_priv: DRM file info
4379 * Allocate an offset in the drm device node's address space to be able to
4380 * memory map a dumb buffer.
4382 * Called by the user via ioctl.
4385 * Zero on success, errno on failure.
4387 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
4388 void *data, struct drm_file *file_priv)
4390 struct drm_mode_map_dumb *args = data;
4392 /* call driver ioctl to get mmap offset */
4393 if (!dev->driver->dumb_map_offset)
4396 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
4400 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4403 * @file_priv: DRM file info
4405 * This destroys the userspace handle for the given dumb backing storage buffer.
4406 * Since buffer objects must be reference counted in the kernel a buffer object
4407 * won't be immediately freed if a framebuffer modeset object still uses it.
4409 * Called by the user via ioctl.
4412 * Zero on success, errno on failure.
4414 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
4415 void *data, struct drm_file *file_priv)
4417 struct drm_mode_destroy_dumb *args = data;
4419 if (!dev->driver->dumb_destroy)
4422 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
4426 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4427 * @format: pixel format (DRM_FORMAT_*)
4428 * @depth: storage for the depth value
4429 * @bpp: storage for the bpp value
4431 * This only supports RGB formats here for compat with code that doesn't use
4432 * pixel formats directly yet.
4434 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
4439 case DRM_FORMAT_RGB332:
4440 case DRM_FORMAT_BGR233:
4444 case DRM_FORMAT_XRGB1555:
4445 case DRM_FORMAT_XBGR1555:
4446 case DRM_FORMAT_RGBX5551:
4447 case DRM_FORMAT_BGRX5551:
4448 case DRM_FORMAT_ARGB1555:
4449 case DRM_FORMAT_ABGR1555:
4450 case DRM_FORMAT_RGBA5551:
4451 case DRM_FORMAT_BGRA5551:
4455 case DRM_FORMAT_RGB565:
4456 case DRM_FORMAT_BGR565:
4460 case DRM_FORMAT_RGB888:
4461 case DRM_FORMAT_BGR888:
4465 case DRM_FORMAT_XRGB8888:
4466 case DRM_FORMAT_XBGR8888:
4467 case DRM_FORMAT_RGBX8888:
4468 case DRM_FORMAT_BGRX8888:
4472 case DRM_FORMAT_XRGB2101010:
4473 case DRM_FORMAT_XBGR2101010:
4474 case DRM_FORMAT_RGBX1010102:
4475 case DRM_FORMAT_BGRX1010102:
4476 case DRM_FORMAT_ARGB2101010:
4477 case DRM_FORMAT_ABGR2101010:
4478 case DRM_FORMAT_RGBA1010102:
4479 case DRM_FORMAT_BGRA1010102:
4483 case DRM_FORMAT_ARGB8888:
4484 case DRM_FORMAT_ABGR8888:
4485 case DRM_FORMAT_RGBA8888:
4486 case DRM_FORMAT_BGRA8888:
4491 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4492 drm_get_format_name(format));
4498 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
4501 * drm_format_num_planes - get the number of planes for format
4502 * @format: pixel format (DRM_FORMAT_*)
4505 * The number of planes used by the specified pixel format.
4507 int drm_format_num_planes(uint32_t format)
4510 case DRM_FORMAT_YUV410:
4511 case DRM_FORMAT_YVU410:
4512 case DRM_FORMAT_YUV411:
4513 case DRM_FORMAT_YVU411:
4514 case DRM_FORMAT_YUV420:
4515 case DRM_FORMAT_YVU420:
4516 case DRM_FORMAT_YUV422:
4517 case DRM_FORMAT_YVU422:
4518 case DRM_FORMAT_YUV444:
4519 case DRM_FORMAT_YVU444:
4521 case DRM_FORMAT_NV12:
4522 case DRM_FORMAT_NV21:
4523 case DRM_FORMAT_NV16:
4524 case DRM_FORMAT_NV61:
4525 case DRM_FORMAT_NV24:
4526 case DRM_FORMAT_NV42:
4532 EXPORT_SYMBOL(drm_format_num_planes);
4535 * drm_format_plane_cpp - determine the bytes per pixel value
4536 * @format: pixel format (DRM_FORMAT_*)
4537 * @plane: plane index
4540 * The bytes per pixel value for the specified plane.
4542 int drm_format_plane_cpp(uint32_t format, int plane)
4547 if (plane >= drm_format_num_planes(format))
4551 case DRM_FORMAT_YUYV:
4552 case DRM_FORMAT_YVYU:
4553 case DRM_FORMAT_UYVY:
4554 case DRM_FORMAT_VYUY:
4556 case DRM_FORMAT_NV12:
4557 case DRM_FORMAT_NV21:
4558 case DRM_FORMAT_NV16:
4559 case DRM_FORMAT_NV61:
4560 case DRM_FORMAT_NV24:
4561 case DRM_FORMAT_NV42:
4562 return plane ? 2 : 1;
4563 case DRM_FORMAT_YUV410:
4564 case DRM_FORMAT_YVU410:
4565 case DRM_FORMAT_YUV411:
4566 case DRM_FORMAT_YVU411:
4567 case DRM_FORMAT_YUV420:
4568 case DRM_FORMAT_YVU420:
4569 case DRM_FORMAT_YUV422:
4570 case DRM_FORMAT_YVU422:
4571 case DRM_FORMAT_YUV444:
4572 case DRM_FORMAT_YVU444:
4575 drm_fb_get_bpp_depth(format, &depth, &bpp);
4579 EXPORT_SYMBOL(drm_format_plane_cpp);
4582 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
4583 * @format: pixel format (DRM_FORMAT_*)
4586 * The horizontal chroma subsampling factor for the
4587 * specified pixel format.
4589 int drm_format_horz_chroma_subsampling(uint32_t format)
4592 case DRM_FORMAT_YUV411:
4593 case DRM_FORMAT_YVU411:
4594 case DRM_FORMAT_YUV410:
4595 case DRM_FORMAT_YVU410:
4597 case DRM_FORMAT_YUYV:
4598 case DRM_FORMAT_YVYU:
4599 case DRM_FORMAT_UYVY:
4600 case DRM_FORMAT_VYUY:
4601 case DRM_FORMAT_NV12:
4602 case DRM_FORMAT_NV21:
4603 case DRM_FORMAT_NV16:
4604 case DRM_FORMAT_NV61:
4605 case DRM_FORMAT_YUV422:
4606 case DRM_FORMAT_YVU422:
4607 case DRM_FORMAT_YUV420:
4608 case DRM_FORMAT_YVU420:
4614 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
4617 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
4618 * @format: pixel format (DRM_FORMAT_*)
4621 * The vertical chroma subsampling factor for the
4622 * specified pixel format.
4624 int drm_format_vert_chroma_subsampling(uint32_t format)
4627 case DRM_FORMAT_YUV410:
4628 case DRM_FORMAT_YVU410:
4630 case DRM_FORMAT_YUV420:
4631 case DRM_FORMAT_YVU420:
4632 case DRM_FORMAT_NV12:
4633 case DRM_FORMAT_NV21:
4639 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
4642 * drm_mode_config_init - initialize DRM mode_configuration structure
4645 * Initialize @dev's mode_config structure, used for tracking the graphics
4646 * configuration of @dev.
4648 * Since this initializes the modeset locks, no locking is possible. Which is no
4649 * problem, since this should happen single threaded at init time. It is the
4650 * driver's problem to ensure this guarantee.
4653 void drm_mode_config_init(struct drm_device *dev)
4655 lockinit(&dev->mode_config.mutex, "drmmcm", 0, LK_CANRECURSE);
4656 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
4657 lockinit(&dev->mode_config.idr_mutex, "mcfgidr", 0, LK_CANRECURSE);
4658 lockinit(&dev->mode_config.fb_lock, "drmfbl", 0, LK_CANRECURSE);
4659 INIT_LIST_HEAD(&dev->mode_config.fb_list);
4660 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
4661 INIT_LIST_HEAD(&dev->mode_config.connector_list);
4662 INIT_LIST_HEAD(&dev->mode_config.bridge_list);
4663 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
4664 INIT_LIST_HEAD(&dev->mode_config.property_list);
4665 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
4666 INIT_LIST_HEAD(&dev->mode_config.plane_list);
4667 idr_init(&dev->mode_config.crtc_idr);
4669 drm_modeset_lock_all(dev);
4670 drm_mode_create_standard_connector_properties(dev);
4671 drm_mode_create_standard_plane_properties(dev);
4672 drm_modeset_unlock_all(dev);
4674 /* Just to be sure */
4675 dev->mode_config.num_fb = 0;
4676 dev->mode_config.num_connector = 0;
4677 dev->mode_config.num_crtc = 0;
4678 dev->mode_config.num_encoder = 0;
4679 dev->mode_config.num_overlay_plane = 0;
4680 dev->mode_config.num_total_plane = 0;
4682 EXPORT_SYMBOL(drm_mode_config_init);
4685 * drm_mode_config_cleanup - free up DRM mode_config info
4688 * Free up all the connectors and CRTCs associated with this DRM device, then
4689 * free up the framebuffers and associated buffer objects.
4691 * Note that since this /should/ happen single-threaded at driver/device
4692 * teardown time, no locking is required. It's the driver's job to ensure that
4693 * this guarantee actually holds true.
4695 * FIXME: cleanup any dangling user buffer objects too
4697 void drm_mode_config_cleanup(struct drm_device *dev)
4699 struct drm_connector *connector, *ot;
4700 struct drm_crtc *crtc, *ct;
4701 struct drm_encoder *encoder, *enct;
4702 struct drm_bridge *bridge, *brt;
4703 struct drm_framebuffer *fb, *fbt;
4704 struct drm_property *property, *pt;
4705 struct drm_property_blob *blob, *bt;
4706 struct drm_plane *plane, *plt;
4708 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
4710 encoder->funcs->destroy(encoder);
4713 list_for_each_entry_safe(bridge, brt,
4714 &dev->mode_config.bridge_list, head) {
4715 bridge->funcs->destroy(bridge);
4718 list_for_each_entry_safe(connector, ot,
4719 &dev->mode_config.connector_list, head) {
4720 connector->funcs->destroy(connector);
4723 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
4725 drm_property_destroy(dev, property);
4728 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
4730 drm_property_destroy_blob(dev, blob);
4734 * Single-threaded teardown context, so it's not required to grab the
4735 * fb_lock to protect against concurrent fb_list access. Contrary, it
4736 * would actually deadlock with the drm_framebuffer_cleanup function.
4738 * Also, if there are any framebuffers left, that's a driver leak now,
4739 * so politely WARN about this.
4741 WARN_ON(!list_empty(&dev->mode_config.fb_list));
4742 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
4743 drm_framebuffer_remove(fb);
4746 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
4748 plane->funcs->destroy(plane);
4751 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
4752 crtc->funcs->destroy(crtc);
4755 idr_destroy(&dev->mode_config.crtc_idr);
4756 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
4758 EXPORT_SYMBOL(drm_mode_config_cleanup);