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 drm_asprintf(GFP_KERNEL, "%s-%d",
865 drm_connector_enum_list[connector_type].name,
866 connector->connector_type_id);
867 if (!connector->name) {
872 INIT_LIST_HEAD(&connector->probed_modes);
873 INIT_LIST_HEAD(&connector->modes);
874 connector->edid_blob_ptr = NULL;
875 connector->status = connector_status_unknown;
877 list_add_tail(&connector->head, &dev->mode_config.connector_list);
878 dev->mode_config.num_connector++;
880 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
881 drm_object_attach_property(&connector->base,
882 dev->mode_config.edid_property,
885 drm_object_attach_property(&connector->base,
886 dev->mode_config.dpms_property, 0);
890 drm_mode_object_put(dev, &connector->base);
893 drm_modeset_unlock_all(dev);
897 EXPORT_SYMBOL(drm_connector_init);
900 * drm_connector_cleanup - cleans up an initialised connector
901 * @connector: connector to cleanup
903 * Cleans up the connector but doesn't free the object.
905 void drm_connector_cleanup(struct drm_connector *connector)
907 struct drm_device *dev = connector->dev;
908 struct drm_display_mode *mode, *t;
910 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
911 drm_mode_remove(connector, mode);
913 list_for_each_entry_safe(mode, t, &connector->modes, head)
914 drm_mode_remove(connector, mode);
916 drm_mode_object_put(dev, &connector->base);
917 kfree(connector->name);
918 connector->name = NULL;
919 list_del(&connector->head);
920 dev->mode_config.num_connector--;
922 EXPORT_SYMBOL(drm_connector_cleanup);
925 * drm_connector_unplug_all - unregister connector userspace interfaces
928 * This function unregisters all connector userspace interfaces in sysfs. Should
929 * be call when the device is disconnected, e.g. from an usb driver's
930 * ->disconnect callback.
932 void drm_connector_unplug_all(struct drm_device *dev)
934 struct drm_connector *connector;
936 /* taking the mode config mutex ends up in a clash with sysfs */
937 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
938 drm_sysfs_connector_remove(connector);
941 EXPORT_SYMBOL(drm_connector_unplug_all);
944 * drm_bridge_init - initialize a drm transcoder/bridge
946 * @bridge: transcoder/bridge to set up
947 * @funcs: bridge function table
949 * Initialises a preallocated bridge. Bridges should be
950 * subclassed as part of driver connector objects.
953 * Zero on success, error code on failure.
955 int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
956 const struct drm_bridge_funcs *funcs)
960 drm_modeset_lock_all(dev);
962 ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
967 bridge->funcs = funcs;
969 list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
970 dev->mode_config.num_bridge++;
973 drm_modeset_unlock_all(dev);
976 EXPORT_SYMBOL(drm_bridge_init);
979 * drm_bridge_cleanup - cleans up an initialised bridge
980 * @bridge: bridge to cleanup
982 * Cleans up the bridge but doesn't free the object.
984 void drm_bridge_cleanup(struct drm_bridge *bridge)
986 struct drm_device *dev = bridge->dev;
988 drm_modeset_lock_all(dev);
989 drm_mode_object_put(dev, &bridge->base);
990 list_del(&bridge->head);
991 dev->mode_config.num_bridge--;
992 drm_modeset_unlock_all(dev);
994 EXPORT_SYMBOL(drm_bridge_cleanup);
997 * drm_encoder_init - Init a preallocated encoder
999 * @encoder: the encoder to init
1000 * @funcs: callbacks for this encoder
1001 * @encoder_type: user visible type of the encoder
1003 * Initialises a preallocated encoder. Encoder should be
1004 * subclassed as part of driver encoder objects.
1007 * Zero on success, error code on failure.
1009 int drm_encoder_init(struct drm_device *dev,
1010 struct drm_encoder *encoder,
1011 const struct drm_encoder_funcs *funcs,
1016 drm_modeset_lock_all(dev);
1018 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1023 encoder->encoder_type = encoder_type;
1024 encoder->funcs = funcs;
1025 encoder->name = drm_asprintf(GFP_KERNEL, "%s-%d",
1026 drm_encoder_enum_list[encoder_type].name,
1028 if (!encoder->name) {
1033 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1034 dev->mode_config.num_encoder++;
1038 drm_mode_object_put(dev, &encoder->base);
1041 drm_modeset_unlock_all(dev);
1045 EXPORT_SYMBOL(drm_encoder_init);
1048 * drm_encoder_cleanup - cleans up an initialised encoder
1049 * @encoder: encoder to cleanup
1051 * Cleans up the encoder but doesn't free the object.
1053 void drm_encoder_cleanup(struct drm_encoder *encoder)
1055 struct drm_device *dev = encoder->dev;
1056 drm_modeset_lock_all(dev);
1057 drm_mode_object_put(dev, &encoder->base);
1058 kfree(encoder->name);
1059 encoder->name = NULL;
1060 list_del(&encoder->head);
1061 dev->mode_config.num_encoder--;
1062 drm_modeset_unlock_all(dev);
1064 EXPORT_SYMBOL(drm_encoder_cleanup);
1067 * drm_universal_plane_init - Initialize a new universal plane object
1069 * @plane: plane object to init
1070 * @possible_crtcs: bitmask of possible CRTCs
1071 * @funcs: callbacks for the new plane
1072 * @formats: array of supported formats (%DRM_FORMAT_*)
1073 * @format_count: number of elements in @formats
1074 * @type: type of plane (overlay, primary, cursor)
1076 * Initializes a plane object of type @type.
1079 * Zero on success, error code on failure.
1081 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1082 unsigned long possible_crtcs,
1083 const struct drm_plane_funcs *funcs,
1084 const uint32_t *formats, uint32_t format_count,
1085 enum drm_plane_type type)
1089 drm_modeset_lock_all(dev);
1091 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1095 plane->base.properties = &plane->properties;
1097 plane->funcs = funcs;
1098 plane->format_types = kmalloc(sizeof(uint32_t) * format_count,
1100 if (!plane->format_types) {
1101 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1102 drm_mode_object_put(dev, &plane->base);
1107 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1108 plane->format_count = format_count;
1109 plane->possible_crtcs = possible_crtcs;
1112 list_add_tail(&plane->head, &dev->mode_config.plane_list);
1113 dev->mode_config.num_total_plane++;
1114 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1115 dev->mode_config.num_overlay_plane++;
1117 drm_object_attach_property(&plane->base,
1118 dev->mode_config.plane_type_property,
1122 drm_modeset_unlock_all(dev);
1126 EXPORT_SYMBOL(drm_universal_plane_init);
1129 * drm_plane_init - Initialize a legacy plane
1131 * @plane: plane object to init
1132 * @possible_crtcs: bitmask of possible CRTCs
1133 * @funcs: callbacks for the new plane
1134 * @formats: array of supported formats (%DRM_FORMAT_*)
1135 * @format_count: number of elements in @formats
1136 * @is_primary: plane type (primary vs overlay)
1138 * Legacy API to initialize a DRM plane.
1140 * New drivers should call drm_universal_plane_init() instead.
1143 * Zero on success, error code on failure.
1145 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1146 unsigned long possible_crtcs,
1147 const struct drm_plane_funcs *funcs,
1148 const uint32_t *formats, uint32_t format_count,
1151 enum drm_plane_type type;
1153 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1154 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1155 formats, format_count, type);
1157 EXPORT_SYMBOL(drm_plane_init);
1160 * drm_plane_cleanup - Clean up the core plane usage
1161 * @plane: plane to cleanup
1163 * This function cleans up @plane and removes it from the DRM mode setting
1164 * core. Note that the function does *not* free the plane structure itself,
1165 * this is the responsibility of the caller.
1167 void drm_plane_cleanup(struct drm_plane *plane)
1169 struct drm_device *dev = plane->dev;
1171 drm_modeset_lock_all(dev);
1172 kfree(plane->format_types);
1173 drm_mode_object_put(dev, &plane->base);
1175 BUG_ON(list_empty(&plane->head));
1177 list_del(&plane->head);
1178 dev->mode_config.num_total_plane--;
1179 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1180 dev->mode_config.num_overlay_plane--;
1181 drm_modeset_unlock_all(dev);
1183 EXPORT_SYMBOL(drm_plane_cleanup);
1186 * drm_plane_force_disable - Forcibly disable a plane
1187 * @plane: plane to disable
1189 * Forces the plane to be disabled.
1191 * Used when the plane's current framebuffer is destroyed,
1192 * and when restoring fbdev mode.
1194 void drm_plane_force_disable(struct drm_plane *plane)
1196 struct drm_framebuffer *old_fb = plane->fb;
1202 ret = plane->funcs->disable_plane(plane);
1204 DRM_ERROR("failed to disable plane with busy fb\n");
1207 /* disconnect the plane from the fb and crtc: */
1208 __drm_framebuffer_unreference(old_fb);
1212 EXPORT_SYMBOL(drm_plane_force_disable);
1214 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
1216 struct drm_property *edid;
1217 struct drm_property *dpms;
1220 * Standard properties (apply to all connectors)
1222 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1223 DRM_MODE_PROP_IMMUTABLE,
1225 dev->mode_config.edid_property = edid;
1227 dpms = drm_property_create_enum(dev, 0,
1228 "DPMS", drm_dpms_enum_list,
1229 ARRAY_SIZE(drm_dpms_enum_list));
1230 dev->mode_config.dpms_property = dpms;
1235 static int drm_mode_create_standard_plane_properties(struct drm_device *dev)
1237 struct drm_property *type;
1240 * Standard properties (apply to all planes)
1242 type = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1243 "type", drm_plane_type_enum_list,
1244 ARRAY_SIZE(drm_plane_type_enum_list));
1245 dev->mode_config.plane_type_property = type;
1251 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1254 * Called by a driver the first time a DVI-I connector is made.
1256 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1258 struct drm_property *dvi_i_selector;
1259 struct drm_property *dvi_i_subconnector;
1261 if (dev->mode_config.dvi_i_select_subconnector_property)
1265 drm_property_create_enum(dev, 0,
1266 "select subconnector",
1267 drm_dvi_i_select_enum_list,
1268 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1269 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1271 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1273 drm_dvi_i_subconnector_enum_list,
1274 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1275 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1279 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1282 * drm_create_tv_properties - create TV specific connector properties
1284 * @num_modes: number of different TV formats (modes) supported
1285 * @modes: array of pointers to strings containing name of each format
1287 * Called by a driver's TV initialization routine, this function creates
1288 * the TV specific connector properties for a given device. Caller is
1289 * responsible for allocating a list of format names and passing them to
1292 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
1295 struct drm_property *tv_selector;
1296 struct drm_property *tv_subconnector;
1299 if (dev->mode_config.tv_select_subconnector_property)
1303 * Basic connector properties
1305 tv_selector = drm_property_create_enum(dev, 0,
1306 "select subconnector",
1307 drm_tv_select_enum_list,
1308 ARRAY_SIZE(drm_tv_select_enum_list));
1309 dev->mode_config.tv_select_subconnector_property = tv_selector;
1312 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1314 drm_tv_subconnector_enum_list,
1315 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1316 dev->mode_config.tv_subconnector_property = tv_subconnector;
1319 * Other, TV specific properties: margins & TV modes.
1321 dev->mode_config.tv_left_margin_property =
1322 drm_property_create_range(dev, 0, "left margin", 0, 100);
1324 dev->mode_config.tv_right_margin_property =
1325 drm_property_create_range(dev, 0, "right margin", 0, 100);
1327 dev->mode_config.tv_top_margin_property =
1328 drm_property_create_range(dev, 0, "top margin", 0, 100);
1330 dev->mode_config.tv_bottom_margin_property =
1331 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1333 dev->mode_config.tv_mode_property =
1334 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1336 for (i = 0; i < num_modes; i++)
1337 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1340 dev->mode_config.tv_brightness_property =
1341 drm_property_create_range(dev, 0, "brightness", 0, 100);
1343 dev->mode_config.tv_contrast_property =
1344 drm_property_create_range(dev, 0, "contrast", 0, 100);
1346 dev->mode_config.tv_flicker_reduction_property =
1347 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1349 dev->mode_config.tv_overscan_property =
1350 drm_property_create_range(dev, 0, "overscan", 0, 100);
1352 dev->mode_config.tv_saturation_property =
1353 drm_property_create_range(dev, 0, "saturation", 0, 100);
1355 dev->mode_config.tv_hue_property =
1356 drm_property_create_range(dev, 0, "hue", 0, 100);
1360 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1363 * drm_mode_create_scaling_mode_property - create scaling mode property
1366 * Called by a driver the first time it's needed, must be attached to desired
1369 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1371 struct drm_property *scaling_mode;
1373 if (dev->mode_config.scaling_mode_property)
1377 drm_property_create_enum(dev, 0, "scaling mode",
1378 drm_scaling_mode_enum_list,
1379 ARRAY_SIZE(drm_scaling_mode_enum_list));
1381 dev->mode_config.scaling_mode_property = scaling_mode;
1385 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1388 * drm_mode_create_dirty_property - create dirty property
1391 * Called by a driver the first time it's needed, must be attached to desired
1394 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1396 struct drm_property *dirty_info;
1398 if (dev->mode_config.dirty_info_property)
1402 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1404 drm_dirty_info_enum_list,
1405 ARRAY_SIZE(drm_dirty_info_enum_list));
1406 dev->mode_config.dirty_info_property = dirty_info;
1410 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1412 static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
1414 uint32_t total_objects = 0;
1416 total_objects += dev->mode_config.num_crtc;
1417 total_objects += dev->mode_config.num_connector;
1418 total_objects += dev->mode_config.num_encoder;
1419 total_objects += dev->mode_config.num_bridge;
1421 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
1422 if (!group->id_list)
1425 group->num_crtcs = 0;
1426 group->num_connectors = 0;
1427 group->num_encoders = 0;
1428 group->num_bridges = 0;
1432 void drm_mode_group_destroy(struct drm_mode_group *group)
1434 kfree(group->id_list);
1435 group->id_list = NULL;
1439 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1440 * the drm core's responsibility to set up mode control groups.
1442 int drm_mode_group_init_legacy_group(struct drm_device *dev,
1443 struct drm_mode_group *group)
1445 struct drm_crtc *crtc;
1446 struct drm_encoder *encoder;
1447 struct drm_connector *connector;
1448 struct drm_bridge *bridge;
1451 if ((ret = drm_mode_group_init(dev, group)))
1454 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1455 group->id_list[group->num_crtcs++] = crtc->base.id;
1457 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1458 group->id_list[group->num_crtcs + group->num_encoders++] =
1461 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1462 group->id_list[group->num_crtcs + group->num_encoders +
1463 group->num_connectors++] = connector->base.id;
1465 list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
1466 group->id_list[group->num_crtcs + group->num_encoders +
1467 group->num_connectors + group->num_bridges++] =
1472 EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
1475 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1476 * @out: drm_mode_modeinfo struct to return to the user
1477 * @in: drm_display_mode to use
1479 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1482 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1483 const struct drm_display_mode *in)
1485 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1486 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1487 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1488 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1489 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1490 "timing values too large for mode info\n");
1492 out->clock = in->clock;
1493 out->hdisplay = in->hdisplay;
1494 out->hsync_start = in->hsync_start;
1495 out->hsync_end = in->hsync_end;
1496 out->htotal = in->htotal;
1497 out->hskew = in->hskew;
1498 out->vdisplay = in->vdisplay;
1499 out->vsync_start = in->vsync_start;
1500 out->vsync_end = in->vsync_end;
1501 out->vtotal = in->vtotal;
1502 out->vscan = in->vscan;
1503 out->vrefresh = in->vrefresh;
1504 out->flags = in->flags;
1505 out->type = in->type;
1506 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1507 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1511 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1512 * @out: drm_display_mode to return to the user
1513 * @in: drm_mode_modeinfo to use
1515 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1519 * Zero on success, errno on failure.
1521 static int drm_crtc_convert_umode(struct drm_display_mode *out,
1522 const struct drm_mode_modeinfo *in)
1524 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1527 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1530 out->clock = in->clock;
1531 out->hdisplay = in->hdisplay;
1532 out->hsync_start = in->hsync_start;
1533 out->hsync_end = in->hsync_end;
1534 out->htotal = in->htotal;
1535 out->hskew = in->hskew;
1536 out->vdisplay = in->vdisplay;
1537 out->vsync_start = in->vsync_start;
1538 out->vsync_end = in->vsync_end;
1539 out->vtotal = in->vtotal;
1540 out->vscan = in->vscan;
1541 out->vrefresh = in->vrefresh;
1542 out->flags = in->flags;
1543 out->type = in->type;
1544 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1545 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1551 * drm_mode_getresources - get graphics configuration
1552 * @dev: drm device for the ioctl
1553 * @data: data pointer for the ioctl
1554 * @file_priv: drm file for the ioctl call
1556 * Construct a set of configuration description structures and return
1557 * them to the user, including CRTC, connector and framebuffer configuration.
1559 * Called by the user via ioctl.
1562 * Zero on success, errno on failure.
1564 int drm_mode_getresources(struct drm_device *dev, void *data,
1565 struct drm_file *file_priv)
1567 struct drm_mode_card_res *card_res = data;
1568 struct list_head *lh;
1569 struct drm_framebuffer *fb;
1570 struct drm_connector *connector;
1571 struct drm_crtc *crtc;
1572 struct drm_encoder *encoder;
1574 int connector_count = 0;
1577 int encoder_count = 0;
1579 uint32_t __user *fb_id;
1580 uint32_t __user *crtc_id;
1581 uint32_t __user *connector_id;
1582 uint32_t __user *encoder_id;
1583 struct drm_mode_group *mode_group;
1585 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1589 mutex_lock(&file_priv->fbs_lock);
1591 * For the non-control nodes we need to limit the list of resources
1592 * by IDs in the group list for this node
1594 list_for_each(lh, &file_priv->fbs)
1597 /* handle this in 4 parts */
1599 if (card_res->count_fbs >= fb_count) {
1601 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1602 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1603 if (put_user(fb->base.id, fb_id + copied)) {
1604 mutex_unlock(&file_priv->fbs_lock);
1610 card_res->count_fbs = fb_count;
1611 mutex_unlock(&file_priv->fbs_lock);
1613 drm_modeset_lock_all(dev);
1614 if (!drm_is_primary_client(file_priv)) {
1617 list_for_each(lh, &dev->mode_config.crtc_list)
1620 list_for_each(lh, &dev->mode_config.connector_list)
1623 list_for_each(lh, &dev->mode_config.encoder_list)
1627 crtc_count = mode_group->num_crtcs;
1628 connector_count = mode_group->num_connectors;
1629 encoder_count = mode_group->num_encoders;
1632 card_res->max_height = dev->mode_config.max_height;
1633 card_res->min_height = dev->mode_config.min_height;
1634 card_res->max_width = dev->mode_config.max_width;
1635 card_res->min_width = dev->mode_config.min_width;
1638 if (card_res->count_crtcs >= crtc_count) {
1640 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1642 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1644 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1645 if (put_user(crtc->base.id, crtc_id + copied)) {
1652 for (i = 0; i < mode_group->num_crtcs; i++) {
1653 if (put_user(mode_group->id_list[i],
1654 crtc_id + copied)) {
1662 card_res->count_crtcs = crtc_count;
1665 if (card_res->count_encoders >= encoder_count) {
1667 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1669 list_for_each_entry(encoder,
1670 &dev->mode_config.encoder_list,
1672 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1674 if (put_user(encoder->base.id, encoder_id +
1682 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1683 if (put_user(mode_group->id_list[i],
1684 encoder_id + copied)) {
1693 card_res->count_encoders = encoder_count;
1696 if (card_res->count_connectors >= connector_count) {
1698 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1700 list_for_each_entry(connector,
1701 &dev->mode_config.connector_list,
1703 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1706 if (put_user(connector->base.id,
1707 connector_id + copied)) {
1714 int start = mode_group->num_crtcs +
1715 mode_group->num_encoders;
1716 for (i = start; i < start + mode_group->num_connectors; i++) {
1717 if (put_user(mode_group->id_list[i],
1718 connector_id + copied)) {
1726 card_res->count_connectors = connector_count;
1728 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1729 card_res->count_connectors, card_res->count_encoders);
1732 drm_modeset_unlock_all(dev);
1737 * drm_mode_getcrtc - get CRTC configuration
1738 * @dev: drm device for the ioctl
1739 * @data: data pointer for the ioctl
1740 * @file_priv: drm file for the ioctl call
1742 * Construct a CRTC configuration structure to return to the user.
1744 * Called by the user via ioctl.
1747 * Zero on success, errno on failure.
1749 int drm_mode_getcrtc(struct drm_device *dev,
1750 void *data, struct drm_file *file_priv)
1752 struct drm_mode_crtc *crtc_resp = data;
1753 struct drm_crtc *crtc;
1756 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1759 drm_modeset_lock_all(dev);
1761 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
1767 crtc_resp->x = crtc->x;
1768 crtc_resp->y = crtc->y;
1769 crtc_resp->gamma_size = crtc->gamma_size;
1770 if (crtc->primary->fb)
1771 crtc_resp->fb_id = crtc->primary->fb->base.id;
1773 crtc_resp->fb_id = 0;
1775 if (crtc->enabled) {
1777 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1778 crtc_resp->mode_valid = 1;
1781 crtc_resp->mode_valid = 0;
1785 drm_modeset_unlock_all(dev);
1789 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1790 const struct drm_file *file_priv)
1793 * If user-space hasn't configured the driver to expose the stereo 3D
1794 * modes, don't expose them.
1796 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1803 * drm_mode_getconnector - get connector configuration
1804 * @dev: drm device for the ioctl
1805 * @data: data pointer for the ioctl
1806 * @file_priv: drm file for the ioctl call
1808 * Construct a connector configuration structure to return to the user.
1810 * Called by the user via ioctl.
1813 * Zero on success, errno on failure.
1815 int drm_mode_getconnector(struct drm_device *dev, void *data,
1816 struct drm_file *file_priv)
1818 struct drm_mode_get_connector *out_resp = data;
1819 struct drm_connector *connector;
1820 struct drm_display_mode *mode;
1822 int props_count = 0;
1823 int encoders_count = 0;
1827 struct drm_mode_modeinfo u_mode;
1828 struct drm_mode_modeinfo __user *mode_ptr;
1829 uint32_t __user *prop_ptr;
1830 uint64_t __user *prop_values;
1831 uint32_t __user *encoder_ptr;
1833 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1836 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1838 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1840 mutex_lock(&dev->mode_config.mutex);
1841 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
1843 connector = drm_connector_find(dev, out_resp->connector_id);
1849 props_count = connector->properties.count;
1851 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1852 if (connector->encoder_ids[i] != 0) {
1857 if (out_resp->count_modes == 0) {
1858 connector->funcs->fill_modes(connector,
1859 dev->mode_config.max_width,
1860 dev->mode_config.max_height);
1863 /* delayed so we get modes regardless of pre-fill_modes state */
1864 list_for_each_entry(mode, &connector->modes, head)
1865 if (drm_mode_expose_to_userspace(mode, file_priv))
1868 out_resp->connector_id = connector->base.id;
1869 out_resp->connector_type = connector->connector_type;
1870 out_resp->connector_type_id = connector->connector_type_id;
1871 out_resp->mm_width = connector->display_info.width_mm;
1872 out_resp->mm_height = connector->display_info.height_mm;
1873 out_resp->subpixel = connector->display_info.subpixel_order;
1874 out_resp->connection = connector->status;
1875 if (connector->encoder)
1876 out_resp->encoder_id = connector->encoder->base.id;
1878 out_resp->encoder_id = 0;
1881 * This ioctl is called twice, once to determine how much space is
1882 * needed, and the 2nd time to fill it.
1884 if ((out_resp->count_modes >= mode_count) && mode_count) {
1886 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
1887 list_for_each_entry(mode, &connector->modes, head) {
1888 if (!drm_mode_expose_to_userspace(mode, file_priv))
1891 drm_crtc_convert_to_umode(&u_mode, mode);
1892 if (copy_to_user(mode_ptr + copied,
1893 &u_mode, sizeof(u_mode))) {
1900 out_resp->count_modes = mode_count;
1902 if ((out_resp->count_props >= props_count) && props_count) {
1904 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
1905 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
1906 for (i = 0; i < connector->properties.count; i++) {
1907 if (put_user(connector->properties.ids[i],
1908 prop_ptr + copied)) {
1913 if (put_user(connector->properties.values[i],
1914 prop_values + copied)) {
1921 out_resp->count_props = props_count;
1923 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1925 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
1926 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1927 if (connector->encoder_ids[i] != 0) {
1928 if (put_user(connector->encoder_ids[i],
1929 encoder_ptr + copied)) {
1937 out_resp->count_encoders = encoders_count;
1940 drm_modeset_unlock(&dev->mode_config.connection_mutex);
1941 mutex_unlock(&dev->mode_config.mutex);
1947 * drm_mode_getencoder - get encoder configuration
1948 * @dev: drm device for the ioctl
1949 * @data: data pointer for the ioctl
1950 * @file_priv: drm file for the ioctl call
1952 * Construct a encoder configuration structure to return to the user.
1954 * Called by the user via ioctl.
1957 * Zero on success, errno on failure.
1959 int drm_mode_getencoder(struct drm_device *dev, void *data,
1960 struct drm_file *file_priv)
1962 struct drm_mode_get_encoder *enc_resp = data;
1963 struct drm_encoder *encoder;
1966 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1969 drm_modeset_lock_all(dev);
1970 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
1977 enc_resp->crtc_id = encoder->crtc->base.id;
1979 enc_resp->crtc_id = 0;
1980 enc_resp->encoder_type = encoder->encoder_type;
1981 enc_resp->encoder_id = encoder->base.id;
1982 enc_resp->possible_crtcs = encoder->possible_crtcs;
1983 enc_resp->possible_clones = encoder->possible_clones;
1986 drm_modeset_unlock_all(dev);
1991 * drm_mode_getplane_res - enumerate all plane resources
1994 * @file_priv: DRM file info
1996 * Construct a list of plane ids to return to the user.
1998 * Called by the user via ioctl.
2001 * Zero on success, errno on failure.
2003 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2004 struct drm_file *file_priv)
2006 struct drm_mode_get_plane_res *plane_resp = data;
2007 struct drm_mode_config *config;
2008 struct drm_plane *plane;
2009 uint32_t __user *plane_ptr;
2010 int copied = 0, ret = 0;
2011 unsigned num_planes;
2013 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2016 drm_modeset_lock_all(dev);
2017 config = &dev->mode_config;
2019 if (file_priv->universal_planes)
2020 num_planes = config->num_total_plane;
2022 num_planes = config->num_overlay_plane;
2025 * This ioctl is called twice, once to determine how much space is
2026 * needed, and the 2nd time to fill it.
2029 (plane_resp->count_planes >= num_planes)) {
2030 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2032 list_for_each_entry(plane, &config->plane_list, head) {
2034 * Unless userspace set the 'universal planes'
2035 * capability bit, only advertise overlays.
2037 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2038 !file_priv->universal_planes)
2041 if (put_user(plane->base.id, plane_ptr + copied)) {
2048 plane_resp->count_planes = num_planes;
2051 drm_modeset_unlock_all(dev);
2056 * drm_mode_getplane - get plane configuration
2059 * @file_priv: DRM file info
2061 * Construct a plane configuration structure to return to the user.
2063 * Called by the user via ioctl.
2066 * Zero on success, errno on failure.
2068 int drm_mode_getplane(struct drm_device *dev, void *data,
2069 struct drm_file *file_priv)
2071 struct drm_mode_get_plane *plane_resp = data;
2072 struct drm_plane *plane;
2073 uint32_t __user *format_ptr;
2076 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2079 drm_modeset_lock_all(dev);
2080 plane = drm_plane_find(dev, plane_resp->plane_id);
2087 plane_resp->crtc_id = plane->crtc->base.id;
2089 plane_resp->crtc_id = 0;
2092 plane_resp->fb_id = plane->fb->base.id;
2094 plane_resp->fb_id = 0;
2096 plane_resp->plane_id = plane->base.id;
2097 plane_resp->possible_crtcs = plane->possible_crtcs;
2098 plane_resp->gamma_size = 0;
2101 * This ioctl is called twice, once to determine how much space is
2102 * needed, and the 2nd time to fill it.
2104 if (plane->format_count &&
2105 (plane_resp->count_format_types >= plane->format_count)) {
2106 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2107 if (copy_to_user(format_ptr,
2108 plane->format_types,
2109 sizeof(uint32_t) * plane->format_count)) {
2114 plane_resp->count_format_types = plane->format_count;
2117 drm_modeset_unlock_all(dev);
2122 * drm_mode_setplane - configure a plane's configuration
2124 * @data: ioctl data*
2125 * @file_priv: DRM file info
2127 * Set plane configuration, including placement, fb, scaling, and other factors.
2128 * Or pass a NULL fb to disable.
2131 * Zero on success, errno on failure.
2133 int drm_mode_setplane(struct drm_device *dev, void *data,
2134 struct drm_file *file_priv)
2136 struct drm_mode_set_plane *plane_req = data;
2137 struct drm_plane *plane;
2138 struct drm_crtc *crtc;
2139 struct drm_framebuffer *fb = NULL, *old_fb = NULL;
2141 unsigned int fb_width, fb_height;
2144 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2148 * First, find the plane, crtc, and fb objects. If not available,
2149 * we don't bother to call the driver.
2151 plane = drm_plane_find(dev, plane_req->plane_id);
2153 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2154 plane_req->plane_id);
2158 /* No fb means shut it down */
2159 if (!plane_req->fb_id) {
2160 drm_modeset_lock_all(dev);
2162 ret = plane->funcs->disable_plane(plane);
2169 drm_modeset_unlock_all(dev);
2173 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2175 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2176 plane_req->crtc_id);
2181 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2183 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2189 /* Check whether this plane supports the fb pixel format. */
2190 for (i = 0; i < plane->format_count; i++)
2191 if (fb->pixel_format == plane->format_types[i])
2193 if (i == plane->format_count) {
2194 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2195 drm_get_format_name(fb->pixel_format));
2200 fb_width = fb->width << 16;
2201 fb_height = fb->height << 16;
2203 /* Make sure source coordinates are inside the fb. */
2204 if (plane_req->src_w > fb_width ||
2205 plane_req->src_x > fb_width - plane_req->src_w ||
2206 plane_req->src_h > fb_height ||
2207 plane_req->src_y > fb_height - plane_req->src_h) {
2208 DRM_DEBUG_KMS("Invalid source coordinates "
2209 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2210 plane_req->src_w >> 16,
2211 ((plane_req->src_w & 0xffff) * 15625) >> 10,
2212 plane_req->src_h >> 16,
2213 ((plane_req->src_h & 0xffff) * 15625) >> 10,
2214 plane_req->src_x >> 16,
2215 ((plane_req->src_x & 0xffff) * 15625) >> 10,
2216 plane_req->src_y >> 16,
2217 ((plane_req->src_y & 0xffff) * 15625) >> 10);
2222 /* Give drivers some help against integer overflows */
2223 if (plane_req->crtc_w > INT_MAX ||
2224 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2225 plane_req->crtc_h > INT_MAX ||
2226 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2227 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2228 plane_req->crtc_w, plane_req->crtc_h,
2229 plane_req->crtc_x, plane_req->crtc_y);
2234 drm_modeset_lock_all(dev);
2236 ret = plane->funcs->update_plane(plane, crtc, fb,
2237 plane_req->crtc_x, plane_req->crtc_y,
2238 plane_req->crtc_w, plane_req->crtc_h,
2239 plane_req->src_x, plane_req->src_y,
2240 plane_req->src_w, plane_req->src_h);
2248 drm_modeset_unlock_all(dev);
2252 drm_framebuffer_unreference(fb);
2254 drm_framebuffer_unreference(old_fb);
2260 * drm_mode_set_config_internal - helper to call ->set_config
2261 * @set: modeset config to set
2263 * This is a little helper to wrap internal calls to the ->set_config driver
2264 * interface. The only thing it adds is correct refcounting dance.
2267 * Zero on success, errno on failure.
2269 int drm_mode_set_config_internal(struct drm_mode_set *set)
2271 struct drm_crtc *crtc = set->crtc;
2272 struct drm_framebuffer *fb;
2273 struct drm_crtc *tmp;
2277 * NOTE: ->set_config can also disable other crtcs (if we steal all
2278 * connectors from it), hence we need to refcount the fbs across all
2279 * crtcs. Atomic modeset will have saner semantics ...
2281 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
2282 tmp->old_fb = tmp->primary->fb;
2286 ret = crtc->funcs->set_config(set);
2288 crtc->primary->crtc = crtc;
2289 crtc->primary->fb = fb;
2292 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
2293 if (tmp->primary->fb)
2294 drm_framebuffer_reference(tmp->primary->fb);
2296 drm_framebuffer_unreference(tmp->old_fb);
2301 EXPORT_SYMBOL(drm_mode_set_config_internal);
2304 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2306 * @crtc: CRTC that framebuffer will be displayed on
2309 * @mode: mode that framebuffer will be displayed under
2310 * @fb: framebuffer to check size of
2312 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2314 const struct drm_display_mode *mode,
2315 const struct drm_framebuffer *fb)
2318 int hdisplay, vdisplay;
2320 hdisplay = mode->hdisplay;
2321 vdisplay = mode->vdisplay;
2323 if (drm_mode_is_stereo(mode)) {
2324 struct drm_display_mode adjusted = *mode;
2326 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE);
2327 hdisplay = adjusted.crtc_hdisplay;
2328 vdisplay = adjusted.crtc_vdisplay;
2331 if (crtc->invert_dimensions)
2332 swap(hdisplay, vdisplay);
2334 if (hdisplay > fb->width ||
2335 vdisplay > fb->height ||
2336 x > fb->width - hdisplay ||
2337 y > fb->height - vdisplay) {
2338 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2339 fb->width, fb->height, hdisplay, vdisplay, x, y,
2340 crtc->invert_dimensions ? " (inverted)" : "");
2346 EXPORT_SYMBOL(drm_crtc_check_viewport);
2349 * drm_mode_setcrtc - set CRTC configuration
2350 * @dev: drm device for the ioctl
2351 * @data: data pointer for the ioctl
2352 * @file_priv: drm file for the ioctl call
2354 * Build a new CRTC configuration based on user request.
2356 * Called by the user via ioctl.
2359 * Zero on success, errno on failure.
2361 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2362 struct drm_file *file_priv)
2364 struct drm_mode_config *config = &dev->mode_config;
2365 struct drm_mode_crtc *crtc_req = data;
2366 struct drm_crtc *crtc;
2367 struct drm_connector **connector_set = NULL, *connector;
2368 struct drm_framebuffer *fb = NULL;
2369 struct drm_display_mode *mode = NULL;
2370 struct drm_mode_set set;
2371 uint32_t __user *set_connectors_ptr;
2375 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2378 /* For some reason crtc x/y offsets are signed internally. */
2379 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2382 drm_modeset_lock_all(dev);
2383 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2385 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2389 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2391 if (crtc_req->mode_valid) {
2392 /* If we have a mode we need a framebuffer. */
2393 /* If we pass -1, set the mode with the currently bound fb */
2394 if (crtc_req->fb_id == -1) {
2395 if (!crtc->primary->fb) {
2396 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2400 fb = crtc->primary->fb;
2401 /* Make refcounting symmetric with the lookup path. */
2402 drm_framebuffer_reference(fb);
2404 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2406 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2413 mode = drm_mode_create(dev);
2419 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2421 DRM_DEBUG_KMS("Invalid mode\n");
2425 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2427 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2434 if (crtc_req->count_connectors == 0 && mode) {
2435 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2440 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2441 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2442 crtc_req->count_connectors);
2447 if (crtc_req->count_connectors > 0) {
2450 /* Avoid unbounded kernel memory allocation */
2451 if (crtc_req->count_connectors > config->num_connector) {
2456 connector_set = kmalloc(crtc_req->count_connectors *
2457 sizeof(struct drm_connector *),
2459 if (!connector_set) {
2464 for (i = 0; i < crtc_req->count_connectors; i++) {
2465 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2466 if (get_user(out_id, &set_connectors_ptr[i])) {
2471 connector = drm_connector_find(dev, out_id);
2473 DRM_DEBUG_KMS("Connector id %d unknown\n",
2478 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2482 connector_set[i] = connector;
2487 set.x = crtc_req->x;
2488 set.y = crtc_req->y;
2490 set.connectors = connector_set;
2491 set.num_connectors = crtc_req->count_connectors;
2493 ret = drm_mode_set_config_internal(&set);
2497 drm_framebuffer_unreference(fb);
2499 kfree(connector_set);
2500 drm_mode_destroy(dev, mode);
2501 drm_modeset_unlock_all(dev);
2505 static int drm_mode_cursor_common(struct drm_device *dev,
2506 struct drm_mode_cursor2 *req,
2507 struct drm_file *file_priv)
2509 struct drm_crtc *crtc;
2512 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2515 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2518 crtc = drm_crtc_find(dev, req->crtc_id);
2520 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2524 drm_modeset_lock(&crtc->mutex, NULL);
2525 if (req->flags & DRM_MODE_CURSOR_BO) {
2526 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
2530 /* Turns off the cursor if handle is 0 */
2531 if (crtc->funcs->cursor_set2)
2532 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2533 req->width, req->height, req->hot_x, req->hot_y);
2535 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2536 req->width, req->height);
2539 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2540 if (crtc->funcs->cursor_move) {
2541 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2548 drm_modeset_unlock(&crtc->mutex);
2556 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2557 * @dev: drm device for the ioctl
2558 * @data: data pointer for the ioctl
2559 * @file_priv: drm file for the ioctl call
2561 * Set the cursor configuration based on user request.
2563 * Called by the user via ioctl.
2566 * Zero on success, errno on failure.
2568 int drm_mode_cursor_ioctl(struct drm_device *dev,
2569 void *data, struct drm_file *file_priv)
2571 struct drm_mode_cursor *req = data;
2572 struct drm_mode_cursor2 new_req;
2574 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2575 new_req.hot_x = new_req.hot_y = 0;
2577 return drm_mode_cursor_common(dev, &new_req, file_priv);
2581 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2582 * @dev: drm device for the ioctl
2583 * @data: data pointer for the ioctl
2584 * @file_priv: drm file for the ioctl call
2586 * Set the cursor configuration based on user request. This implements the 2nd
2587 * version of the cursor ioctl, which allows userspace to additionally specify
2588 * the hotspot of the pointer.
2590 * Called by the user via ioctl.
2593 * Zero on success, errno on failure.
2595 int drm_mode_cursor2_ioctl(struct drm_device *dev,
2596 void *data, struct drm_file *file_priv)
2598 struct drm_mode_cursor2 *req = data;
2599 return drm_mode_cursor_common(dev, req, file_priv);
2603 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2604 * @bpp: bits per pixels
2605 * @depth: bit depth per pixel
2607 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2608 * Useful in fbdev emulation code, since that deals in those values.
2610 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2616 fmt = DRM_FORMAT_C8;
2620 fmt = DRM_FORMAT_XRGB1555;
2622 fmt = DRM_FORMAT_RGB565;
2625 fmt = DRM_FORMAT_RGB888;
2629 fmt = DRM_FORMAT_XRGB8888;
2630 else if (depth == 30)
2631 fmt = DRM_FORMAT_XRGB2101010;
2633 fmt = DRM_FORMAT_ARGB8888;
2636 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2637 fmt = DRM_FORMAT_XRGB8888;
2643 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
2646 * drm_mode_addfb - add an FB to the graphics configuration
2647 * @dev: drm device for the ioctl
2648 * @data: data pointer for the ioctl
2649 * @file_priv: drm file for the ioctl call
2651 * Add a new FB to the specified CRTC, given a user request. This is the
2652 * original addfb ioclt which only supported RGB formats.
2654 * Called by the user via ioctl.
2657 * Zero on success, errno on failure.
2659 int drm_mode_addfb(struct drm_device *dev,
2660 void *data, struct drm_file *file_priv)
2662 struct drm_mode_fb_cmd *or = data;
2663 struct drm_mode_fb_cmd2 r = {};
2664 struct drm_mode_config *config = &dev->mode_config;
2665 struct drm_framebuffer *fb;
2668 /* Use new struct with format internally */
2669 r.fb_id = or->fb_id;
2670 r.width = or->width;
2671 r.height = or->height;
2672 r.pitches[0] = or->pitch;
2673 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
2674 r.handles[0] = or->handle;
2676 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2679 if ((config->min_width > r.width) || (r.width > config->max_width))
2682 if ((config->min_height > r.height) || (r.height > config->max_height))
2685 fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r);
2687 DRM_DEBUG_KMS("could not create framebuffer\n");
2691 mutex_lock(&file_priv->fbs_lock);
2692 or->fb_id = fb->base.id;
2693 list_add(&fb->filp_head, &file_priv->fbs);
2694 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2695 mutex_unlock(&file_priv->fbs_lock);
2700 static int format_check(const struct drm_mode_fb_cmd2 *r)
2702 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
2706 case DRM_FORMAT_RGB332:
2707 case DRM_FORMAT_BGR233:
2708 case DRM_FORMAT_XRGB4444:
2709 case DRM_FORMAT_XBGR4444:
2710 case DRM_FORMAT_RGBX4444:
2711 case DRM_FORMAT_BGRX4444:
2712 case DRM_FORMAT_ARGB4444:
2713 case DRM_FORMAT_ABGR4444:
2714 case DRM_FORMAT_RGBA4444:
2715 case DRM_FORMAT_BGRA4444:
2716 case DRM_FORMAT_XRGB1555:
2717 case DRM_FORMAT_XBGR1555:
2718 case DRM_FORMAT_RGBX5551:
2719 case DRM_FORMAT_BGRX5551:
2720 case DRM_FORMAT_ARGB1555:
2721 case DRM_FORMAT_ABGR1555:
2722 case DRM_FORMAT_RGBA5551:
2723 case DRM_FORMAT_BGRA5551:
2724 case DRM_FORMAT_RGB565:
2725 case DRM_FORMAT_BGR565:
2726 case DRM_FORMAT_RGB888:
2727 case DRM_FORMAT_BGR888:
2728 case DRM_FORMAT_XRGB8888:
2729 case DRM_FORMAT_XBGR8888:
2730 case DRM_FORMAT_RGBX8888:
2731 case DRM_FORMAT_BGRX8888:
2732 case DRM_FORMAT_ARGB8888:
2733 case DRM_FORMAT_ABGR8888:
2734 case DRM_FORMAT_RGBA8888:
2735 case DRM_FORMAT_BGRA8888:
2736 case DRM_FORMAT_XRGB2101010:
2737 case DRM_FORMAT_XBGR2101010:
2738 case DRM_FORMAT_RGBX1010102:
2739 case DRM_FORMAT_BGRX1010102:
2740 case DRM_FORMAT_ARGB2101010:
2741 case DRM_FORMAT_ABGR2101010:
2742 case DRM_FORMAT_RGBA1010102:
2743 case DRM_FORMAT_BGRA1010102:
2744 case DRM_FORMAT_YUYV:
2745 case DRM_FORMAT_YVYU:
2746 case DRM_FORMAT_UYVY:
2747 case DRM_FORMAT_VYUY:
2748 case DRM_FORMAT_AYUV:
2749 case DRM_FORMAT_NV12:
2750 case DRM_FORMAT_NV21:
2751 case DRM_FORMAT_NV16:
2752 case DRM_FORMAT_NV61:
2753 case DRM_FORMAT_NV24:
2754 case DRM_FORMAT_NV42:
2755 case DRM_FORMAT_YUV410:
2756 case DRM_FORMAT_YVU410:
2757 case DRM_FORMAT_YUV411:
2758 case DRM_FORMAT_YVU411:
2759 case DRM_FORMAT_YUV420:
2760 case DRM_FORMAT_YVU420:
2761 case DRM_FORMAT_YUV422:
2762 case DRM_FORMAT_YVU422:
2763 case DRM_FORMAT_YUV444:
2764 case DRM_FORMAT_YVU444:
2767 DRM_DEBUG_KMS("invalid pixel format %s\n",
2768 drm_get_format_name(r->pixel_format));
2773 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
2775 int ret, hsub, vsub, num_planes, i;
2777 ret = format_check(r);
2779 DRM_DEBUG_KMS("bad framebuffer format %s\n",
2780 drm_get_format_name(r->pixel_format));
2784 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
2785 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
2786 num_planes = drm_format_num_planes(r->pixel_format);
2788 if (r->width == 0 || r->width % hsub) {
2789 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->height);
2793 if (r->height == 0 || r->height % vsub) {
2794 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
2798 for (i = 0; i < num_planes; i++) {
2799 unsigned int width = r->width / (i != 0 ? hsub : 1);
2800 unsigned int height = r->height / (i != 0 ? vsub : 1);
2801 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
2803 if (!r->handles[i]) {
2804 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
2808 if ((uint64_t) width * cpp > UINT_MAX)
2811 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
2814 if (r->pitches[i] < width * cpp) {
2815 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
2824 * drm_mode_addfb2 - add an FB to the graphics configuration
2825 * @dev: drm device for the ioctl
2826 * @data: data pointer for the ioctl
2827 * @file_priv: drm file for the ioctl call
2829 * Add a new FB to the specified CRTC, given a user request with format. This is
2830 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
2831 * and uses fourcc codes as pixel format specifiers.
2833 * Called by the user via ioctl.
2836 * Zero on success, errno on failure.
2838 int drm_mode_addfb2(struct drm_device *dev,
2839 void *data, struct drm_file *file_priv)
2841 struct drm_mode_fb_cmd2 *r = data;
2842 struct drm_mode_config *config = &dev->mode_config;
2843 struct drm_framebuffer *fb;
2846 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2849 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
2850 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
2854 if ((config->min_width > r->width) || (r->width > config->max_width)) {
2855 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
2856 r->width, config->min_width, config->max_width);
2859 if ((config->min_height > r->height) || (r->height > config->max_height)) {
2860 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
2861 r->height, config->min_height, config->max_height);
2865 ret = framebuffer_check(r);
2869 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
2871 DRM_DEBUG_KMS("could not create framebuffer\n");
2875 mutex_lock(&file_priv->fbs_lock);
2876 r->fb_id = fb->base.id;
2877 list_add(&fb->filp_head, &file_priv->fbs);
2878 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2879 mutex_unlock(&file_priv->fbs_lock);
2886 * drm_mode_rmfb - remove an FB from the configuration
2887 * @dev: drm device for the ioctl
2888 * @data: data pointer for the ioctl
2889 * @file_priv: drm file for the ioctl call
2891 * Remove the FB specified by the user.
2893 * Called by the user via ioctl.
2896 * Zero on success, errno on failure.
2898 int drm_mode_rmfb(struct drm_device *dev,
2899 void *data, struct drm_file *file_priv)
2901 struct drm_framebuffer *fb = NULL;
2902 struct drm_framebuffer *fbl = NULL;
2903 uint32_t *id = data;
2906 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2909 mutex_lock(&file_priv->fbs_lock);
2910 mutex_lock(&dev->mode_config.fb_lock);
2911 fb = __drm_framebuffer_lookup(dev, *id);
2915 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
2921 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
2922 __drm_framebuffer_unregister(dev, fb);
2924 list_del_init(&fb->filp_head);
2925 mutex_unlock(&dev->mode_config.fb_lock);
2926 mutex_unlock(&file_priv->fbs_lock);
2928 drm_framebuffer_remove(fb);
2933 mutex_unlock(&dev->mode_config.fb_lock);
2934 mutex_unlock(&file_priv->fbs_lock);
2940 * drm_mode_getfb - get FB info
2941 * @dev: drm device for the ioctl
2942 * @data: data pointer for the ioctl
2943 * @file_priv: drm file for the ioctl call
2945 * Lookup the FB given its ID and return info about it.
2947 * Called by the user via ioctl.
2950 * Zero on success, errno on failure.
2952 int drm_mode_getfb(struct drm_device *dev,
2953 void *data, struct drm_file *file_priv)
2955 struct drm_mode_fb_cmd *r = data;
2956 struct drm_framebuffer *fb;
2959 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2962 fb = drm_framebuffer_lookup(dev, r->fb_id);
2966 r->height = fb->height;
2967 r->width = fb->width;
2968 r->depth = fb->depth;
2969 r->bpp = fb->bits_per_pixel;
2970 r->pitch = fb->pitches[0];
2971 if (fb->funcs->create_handle) {
2972 ret = fb->funcs->create_handle(fb, file_priv, &r->handle);
2977 drm_framebuffer_unreference(fb);
2983 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
2984 * @dev: drm device for the ioctl
2985 * @data: data pointer for the ioctl
2986 * @file_priv: drm file for the ioctl call
2988 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
2989 * rectangle list. Generic userspace which does frontbuffer rendering must call
2990 * this ioctl to flush out the changes on manual-update display outputs, e.g.
2991 * usb display-link, mipi manual update panels or edp panel self refresh modes.
2993 * Modesetting drivers which always update the frontbuffer do not need to
2994 * implement the corresponding ->dirty framebuffer callback.
2996 * Called by the user via ioctl.
2999 * Zero on success, errno on failure.
3001 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3002 void *data, struct drm_file *file_priv)
3004 struct drm_clip_rect __user *clips_ptr;
3005 struct drm_clip_rect *clips = NULL;
3006 struct drm_mode_fb_dirty_cmd *r = data;
3007 struct drm_framebuffer *fb;
3012 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3015 fb = drm_framebuffer_lookup(dev, r->fb_id);
3019 num_clips = r->num_clips;
3020 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3022 if (!num_clips != !clips_ptr) {
3027 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3029 /* If userspace annotates copy, clips must come in pairs */
3030 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3035 if (num_clips && clips_ptr) {
3036 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3040 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
3046 ret = copy_from_user(clips, clips_ptr,
3047 num_clips * sizeof(*clips));
3054 if (fb->funcs->dirty) {
3055 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3064 drm_framebuffer_unreference(fb);
3071 * drm_fb_release - remove and free the FBs on this file
3072 * @priv: drm file for the ioctl
3074 * Destroy all the FBs associated with @filp.
3076 * Called by the user via ioctl.
3079 * Zero on success, errno on failure.
3081 void drm_fb_release(struct drm_file *priv)
3083 struct drm_device *dev = priv->dev;
3084 struct drm_framebuffer *fb, *tfb;
3086 mutex_lock(&priv->fbs_lock);
3087 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3089 mutex_lock(&dev->mode_config.fb_lock);
3090 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3091 __drm_framebuffer_unregister(dev, fb);
3092 mutex_unlock(&dev->mode_config.fb_lock);
3094 list_del_init(&fb->filp_head);
3096 /* This will also drop the fpriv->fbs reference. */
3097 drm_framebuffer_remove(fb);
3099 mutex_unlock(&priv->fbs_lock);
3103 * drm_property_create - create a new property type
3105 * @flags: flags specifying the property type
3106 * @name: name of the property
3107 * @num_values: number of pre-defined values
3109 * This creates a new generic drm property which can then be attached to a drm
3110 * object with drm_object_attach_property. The returned property object must be
3111 * freed with drm_property_destroy.
3114 * A pointer to the newly created property on success, NULL on failure.
3116 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3117 const char *name, int num_values)
3119 struct drm_property *property = NULL;
3122 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3126 property->dev = dev;
3129 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
3130 if (!property->values)
3134 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3138 property->flags = flags;
3139 property->num_values = num_values;
3140 INIT_LIST_HEAD(&property->enum_blob_list);
3143 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3144 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3147 list_add_tail(&property->head, &dev->mode_config.property_list);
3149 WARN_ON(!drm_property_type_valid(property));
3153 kfree(property->values);
3157 EXPORT_SYMBOL(drm_property_create);
3160 * drm_property_create - create a new enumeration property type
3162 * @flags: flags specifying the property type
3163 * @name: name of the property
3164 * @props: enumeration lists with property values
3165 * @num_values: number of pre-defined values
3167 * This creates a new generic drm property which can then be attached to a drm
3168 * object with drm_object_attach_property. The returned property object must be
3169 * freed with drm_property_destroy.
3171 * Userspace is only allowed to set one of the predefined values for enumeration
3175 * A pointer to the newly created property on success, NULL on failure.
3177 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3179 const struct drm_prop_enum_list *props,
3182 struct drm_property *property;
3185 flags |= DRM_MODE_PROP_ENUM;
3187 property = drm_property_create(dev, flags, name, num_values);
3191 for (i = 0; i < num_values; i++) {
3192 ret = drm_property_add_enum(property, i,
3196 drm_property_destroy(dev, property);
3203 EXPORT_SYMBOL(drm_property_create_enum);
3206 * drm_property_create - create a new bitmask property type
3208 * @flags: flags specifying the property type
3209 * @name: name of the property
3210 * @props: enumeration lists with property bitflags
3211 * @num_values: number of pre-defined values
3213 * This creates a new generic drm property which can then be attached to a drm
3214 * object with drm_object_attach_property. The returned property object must be
3215 * freed with drm_property_destroy.
3217 * Compared to plain enumeration properties userspace is allowed to set any
3218 * or'ed together combination of the predefined property bitflag values
3221 * A pointer to the newly created property on success, NULL on failure.
3223 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3224 int flags, const char *name,
3225 const struct drm_prop_enum_list *props,
3228 struct drm_property *property;
3231 flags |= DRM_MODE_PROP_BITMASK;
3233 property = drm_property_create(dev, flags, name, num_values);
3237 for (i = 0; i < num_values; i++) {
3238 ret = drm_property_add_enum(property, i,
3242 drm_property_destroy(dev, property);
3249 EXPORT_SYMBOL(drm_property_create_bitmask);
3251 static struct drm_property *property_create_range(struct drm_device *dev,
3252 int flags, const char *name,
3253 uint64_t min, uint64_t max)
3255 struct drm_property *property;
3257 property = drm_property_create(dev, flags, name, 2);
3261 property->values[0] = min;
3262 property->values[1] = max;
3268 * drm_property_create - create a new ranged property type
3270 * @flags: flags specifying the property type
3271 * @name: name of the property
3272 * @min: minimum value of the property
3273 * @max: maximum value of the property
3275 * This creates a new generic drm property which can then be attached to a drm
3276 * object with drm_object_attach_property. The returned property object must be
3277 * freed with drm_property_destroy.
3279 * Userspace is allowed to set any interger value in the (min, max) range
3283 * A pointer to the newly created property on success, NULL on failure.
3285 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3287 uint64_t min, uint64_t max)
3289 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3292 EXPORT_SYMBOL(drm_property_create_range);
3294 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3295 int flags, const char *name,
3296 int64_t min, int64_t max)
3298 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3299 name, I642U64(min), I642U64(max));
3301 EXPORT_SYMBOL(drm_property_create_signed_range);
3303 struct drm_property *drm_property_create_object(struct drm_device *dev,
3304 int flags, const char *name, uint32_t type)
3306 struct drm_property *property;
3308 flags |= DRM_MODE_PROP_OBJECT;
3310 property = drm_property_create(dev, flags, name, 1);
3314 property->values[0] = type;
3318 EXPORT_SYMBOL(drm_property_create_object);
3321 * drm_property_add_enum - add a possible value to an enumeration property
3322 * @property: enumeration property to change
3323 * @index: index of the new enumeration
3324 * @value: value of the new enumeration
3325 * @name: symbolic name of the new enumeration
3327 * This functions adds enumerations to a property.
3329 * It's use is deprecated, drivers should use one of the more specific helpers
3330 * to directly create the property with all enumerations already attached.
3333 * Zero on success, error code on failure.
3335 int drm_property_add_enum(struct drm_property *property, int index,
3336 uint64_t value, const char *name)
3338 struct drm_property_enum *prop_enum;
3340 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3341 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
3345 * Bitmask enum properties have the additional constraint of values
3348 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3352 if (!list_empty(&property->enum_blob_list)) {
3353 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3354 if (prop_enum->value == value) {
3355 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3356 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3362 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3366 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3367 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3368 prop_enum->value = value;
3370 property->values[index] = value;
3371 list_add_tail(&prop_enum->head, &property->enum_blob_list);
3374 EXPORT_SYMBOL(drm_property_add_enum);
3377 * drm_property_destroy - destroy a drm property
3379 * @property: property to destry
3381 * This function frees a property including any attached resources like
3382 * enumeration values.
3384 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3386 struct drm_property_enum *prop_enum, *pt;
3388 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
3389 list_del(&prop_enum->head);
3393 if (property->num_values)
3394 kfree(property->values);
3395 drm_mode_object_put(dev, &property->base);
3396 list_del(&property->head);
3399 EXPORT_SYMBOL(drm_property_destroy);
3402 * drm_object_attach_property - attach a property to a modeset object
3403 * @obj: drm modeset object
3404 * @property: property to attach
3405 * @init_val: initial value of the property
3407 * This attaches the given property to the modeset object with the given initial
3408 * value. Currently this function cannot fail since the properties are stored in
3409 * a statically sized array.
3411 void drm_object_attach_property(struct drm_mode_object *obj,
3412 struct drm_property *property,
3415 int count = obj->properties->count;
3417 if (count == DRM_OBJECT_MAX_PROPERTY) {
3418 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3419 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3420 "you see this message on the same object type.\n",
3425 obj->properties->ids[count] = property->base.id;
3426 obj->properties->values[count] = init_val;
3427 obj->properties->count++;
3429 EXPORT_SYMBOL(drm_object_attach_property);
3432 * drm_object_property_set_value - set the value of a property
3433 * @obj: drm mode object to set property value for
3434 * @property: property to set
3435 * @val: value the property should be set to
3437 * This functions sets a given property on a given object. This function only
3438 * changes the software state of the property, it does not call into the
3439 * driver's ->set_property callback.
3442 * Zero on success, error code on failure.
3444 int drm_object_property_set_value(struct drm_mode_object *obj,
3445 struct drm_property *property, uint64_t val)
3449 for (i = 0; i < obj->properties->count; i++) {
3450 if (obj->properties->ids[i] == property->base.id) {
3451 obj->properties->values[i] = val;
3458 EXPORT_SYMBOL(drm_object_property_set_value);
3461 * drm_object_property_get_value - retrieve the value of a property
3462 * @obj: drm mode object to get property value from
3463 * @property: property to retrieve
3464 * @val: storage for the property value
3466 * This function retrieves the softare state of the given property for the given
3467 * property. Since there is no driver callback to retrieve the current property
3468 * value this might be out of sync with the hardware, depending upon the driver
3472 * Zero on success, error code on failure.
3474 int drm_object_property_get_value(struct drm_mode_object *obj,
3475 struct drm_property *property, uint64_t *val)
3479 for (i = 0; i < obj->properties->count; i++) {
3480 if (obj->properties->ids[i] == property->base.id) {
3481 *val = obj->properties->values[i];
3488 EXPORT_SYMBOL(drm_object_property_get_value);
3491 * drm_mode_getproperty_ioctl - get the current value of a connector's property
3494 * @file_priv: DRM file info
3496 * This function retrieves the current value for an connectors's property.
3498 * Called by the user via ioctl.
3501 * Zero on success, errno on failure.
3503 int drm_mode_getproperty_ioctl(struct drm_device *dev,
3504 void *data, struct drm_file *file_priv)
3506 struct drm_mode_get_property *out_resp = data;
3507 struct drm_property *property;
3510 int value_count = 0;
3513 struct drm_property_enum *prop_enum;
3514 struct drm_mode_property_enum __user *enum_ptr;
3515 struct drm_property_blob *prop_blob;
3516 uint32_t __user *blob_id_ptr;
3517 uint64_t __user *values_ptr;
3518 uint32_t __user *blob_length_ptr;
3520 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3523 drm_modeset_lock_all(dev);
3524 property = drm_property_find(dev, out_resp->prop_id);
3530 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3531 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3532 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
3534 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
3535 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
3539 value_count = property->num_values;
3541 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
3542 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
3543 out_resp->flags = property->flags;
3545 if ((out_resp->count_values >= value_count) && value_count) {
3546 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
3547 for (i = 0; i < value_count; i++) {
3548 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
3554 out_resp->count_values = value_count;
3556 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3557 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3558 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
3560 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3561 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3563 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
3568 if (copy_to_user(&enum_ptr[copied].name,
3569 &prop_enum->name, DRM_PROP_NAME_LEN)) {
3576 out_resp->count_enum_blobs = enum_count;
3579 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
3580 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
3582 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr;
3583 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr;
3585 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
3586 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
3591 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
3599 out_resp->count_enum_blobs = blob_count;
3602 drm_modeset_unlock_all(dev);
3606 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
3609 struct drm_property_blob *blob;
3612 if (!length || !data)
3615 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
3619 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
3625 blob->length = length;
3627 memcpy(blob->data, data, length);
3629 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
3633 static void drm_property_destroy_blob(struct drm_device *dev,
3634 struct drm_property_blob *blob)
3636 drm_mode_object_put(dev, &blob->base);
3637 list_del(&blob->head);
3642 * drm_mode_getblob_ioctl - get the contents of a blob property value
3645 * @file_priv: DRM file info
3647 * This function retrieves the contents of a blob property. The value stored in
3648 * an object's blob property is just a normal modeset object id.
3650 * Called by the user via ioctl.
3653 * Zero on success, errno on failure.
3655 int drm_mode_getblob_ioctl(struct drm_device *dev,
3656 void *data, struct drm_file *file_priv)
3658 struct drm_mode_get_blob *out_resp = data;
3659 struct drm_property_blob *blob;
3661 void __user *blob_ptr;
3663 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3666 drm_modeset_lock_all(dev);
3667 blob = drm_property_blob_find(dev, out_resp->blob_id);
3673 if (out_resp->length == blob->length) {
3674 blob_ptr = (void __user *)(unsigned long)out_resp->data;
3675 if (copy_to_user(blob_ptr, blob->data, blob->length)){
3680 out_resp->length = blob->length;
3683 drm_modeset_unlock_all(dev);
3688 * drm_mode_connector_update_edid_property - update the edid property of a connector
3689 * @connector: drm connector
3690 * @edid: new value of the edid property
3692 * This function creates a new blob modeset object and assigns its id to the
3693 * connector's edid property.
3696 * Zero on success, errno on failure.
3698 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
3701 struct drm_device *dev = connector->dev;
3704 if (connector->edid_blob_ptr)
3705 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
3707 /* Delete edid, when there is none. */
3709 connector->edid_blob_ptr = NULL;
3710 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
3714 size = EDID_LENGTH * (1 + edid->extensions);
3715 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
3717 if (!connector->edid_blob_ptr)
3720 ret = drm_object_property_set_value(&connector->base,
3721 dev->mode_config.edid_property,
3722 connector->edid_blob_ptr->base.id);
3726 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
3728 static bool drm_property_change_is_valid(struct drm_property *property,
3731 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
3734 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
3735 if (value < property->values[0] || value > property->values[1])
3738 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
3739 int64_t svalue = U642I64(value);
3740 if (svalue < U642I64(property->values[0]) ||
3741 svalue > U642I64(property->values[1]))
3744 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3746 uint64_t valid_mask = 0;
3747 for (i = 0; i < property->num_values; i++)
3748 valid_mask |= (1ULL << property->values[i]);
3749 return !(value & ~valid_mask);
3750 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
3751 /* Only the driver knows */
3753 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
3754 struct drm_mode_object *obj;
3755 /* a zero value for an object property translates to null: */
3759 * NOTE: use _object_find() directly to bypass restriction on
3760 * looking up refcnt'd objects (ie. fb's). For a refcnt'd
3761 * object this could race against object finalization, so it
3762 * simply tells us that the object *was* valid. Which is good
3765 obj = _object_find(property->dev, value, property->values[0]);
3769 for (i = 0; i < property->num_values; i++)
3770 if (property->values[i] == value)
3777 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
3780 * @file_priv: DRM file info
3782 * This function sets the current value for a connectors's property. It also
3783 * calls into a driver's ->set_property callback to update the hardware state
3785 * Called by the user via ioctl.
3788 * Zero on success, errno on failure.
3790 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
3791 void *data, struct drm_file *file_priv)
3793 struct drm_mode_connector_set_property *conn_set_prop = data;
3794 struct drm_mode_obj_set_property obj_set_prop = {
3795 .value = conn_set_prop->value,
3796 .prop_id = conn_set_prop->prop_id,
3797 .obj_id = conn_set_prop->connector_id,
3798 .obj_type = DRM_MODE_OBJECT_CONNECTOR
3801 /* It does all the locking and checking we need */
3802 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
3805 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
3806 struct drm_property *property,
3810 struct drm_connector *connector = obj_to_connector(obj);
3812 /* Do DPMS ourselves */
3813 if (property == connector->dev->mode_config.dpms_property) {
3814 if (connector->funcs->dpms)
3815 (*connector->funcs->dpms)(connector, (int)value);
3817 } else if (connector->funcs->set_property)
3818 ret = connector->funcs->set_property(connector, property, value);
3820 /* store the property value if successful */
3822 drm_object_property_set_value(&connector->base, property, value);
3826 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
3827 struct drm_property *property,
3831 struct drm_crtc *crtc = obj_to_crtc(obj);
3833 if (crtc->funcs->set_property)
3834 ret = crtc->funcs->set_property(crtc, property, value);
3836 drm_object_property_set_value(obj, property, value);
3841 static int drm_mode_plane_set_obj_prop(struct drm_mode_object *obj,
3842 struct drm_property *property,
3846 struct drm_plane *plane = obj_to_plane(obj);
3848 if (plane->funcs->set_property)
3849 ret = plane->funcs->set_property(plane, property, value);
3851 drm_object_property_set_value(obj, property, value);
3857 * drm_mode_getproperty_ioctl - get the current value of a object's property
3860 * @file_priv: DRM file info
3862 * This function retrieves the current value for an object's property. Compared
3863 * to the connector specific ioctl this one is extended to also work on crtc and
3866 * Called by the user via ioctl.
3869 * Zero on success, errno on failure.
3871 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
3872 struct drm_file *file_priv)
3874 struct drm_mode_obj_get_properties *arg = data;
3875 struct drm_mode_object *obj;
3879 int props_count = 0;
3880 uint32_t __user *props_ptr;
3881 uint64_t __user *prop_values_ptr;
3883 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3886 drm_modeset_lock_all(dev);
3888 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
3893 if (!obj->properties) {
3898 props_count = obj->properties->count;
3900 /* This ioctl is called twice, once to determine how much space is
3901 * needed, and the 2nd time to fill it. */
3902 if ((arg->count_props >= props_count) && props_count) {
3904 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
3905 prop_values_ptr = (uint64_t __user *)(unsigned long)
3906 (arg->prop_values_ptr);
3907 for (i = 0; i < props_count; i++) {
3908 if (put_user(obj->properties->ids[i],
3909 props_ptr + copied)) {
3913 if (put_user(obj->properties->values[i],
3914 prop_values_ptr + copied)) {
3921 arg->count_props = props_count;
3923 drm_modeset_unlock_all(dev);
3928 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
3931 * @file_priv: DRM file info
3933 * This function sets the current value for an object's property. It also calls
3934 * into a driver's ->set_property callback to update the hardware state.
3935 * Compared to the connector specific ioctl this one is extended to also work on
3936 * crtc and plane objects.
3938 * Called by the user via ioctl.
3941 * Zero on success, errno on failure.
3943 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
3944 struct drm_file *file_priv)
3946 struct drm_mode_obj_set_property *arg = data;
3947 struct drm_mode_object *arg_obj;
3948 struct drm_mode_object *prop_obj;
3949 struct drm_property *property;
3953 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3956 drm_modeset_lock_all(dev);
3958 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
3963 if (!arg_obj->properties)
3966 for (i = 0; i < arg_obj->properties->count; i++)
3967 if (arg_obj->properties->ids[i] == arg->prop_id)
3970 if (i == arg_obj->properties->count)
3973 prop_obj = drm_mode_object_find(dev, arg->prop_id,
3974 DRM_MODE_OBJECT_PROPERTY);
3979 property = obj_to_property(prop_obj);
3981 if (!drm_property_change_is_valid(property, arg->value))
3984 switch (arg_obj->type) {
3985 case DRM_MODE_OBJECT_CONNECTOR:
3986 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
3989 case DRM_MODE_OBJECT_CRTC:
3990 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
3992 case DRM_MODE_OBJECT_PLANE:
3993 ret = drm_mode_plane_set_obj_prop(arg_obj, property, arg->value);
3998 drm_modeset_unlock_all(dev);
4003 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4004 * @connector: connector to attach
4005 * @encoder: encoder to attach @connector to
4007 * This function links up a connector to an encoder. Note that the routing
4008 * restrictions between encoders and crtcs are exposed to userspace through the
4009 * possible_clones and possible_crtcs bitmasks.
4012 * Zero on success, errno on failure.
4014 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4015 struct drm_encoder *encoder)
4019 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4020 if (connector->encoder_ids[i] == 0) {
4021 connector->encoder_ids[i] = encoder->base.id;
4027 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4030 * drm_mode_crtc_set_gamma_size - set the gamma table size
4031 * @crtc: CRTC to set the gamma table size for
4032 * @gamma_size: size of the gamma table
4034 * Drivers which support gamma tables should set this to the supported gamma
4035 * table size when initializing the CRTC. Currently the drm core only supports a
4036 * fixed gamma table size.
4039 * Zero on success, errno on failure.
4041 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
4044 crtc->gamma_size = gamma_size;
4046 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
4047 if (!crtc->gamma_store) {
4048 crtc->gamma_size = 0;
4054 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
4057 * drm_mode_gamma_set_ioctl - set the gamma table
4060 * @file_priv: DRM file info
4062 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4063 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4065 * Called by the user via ioctl.
4068 * Zero on success, errno on failure.
4070 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
4071 void *data, struct drm_file *file_priv)
4073 struct drm_mode_crtc_lut *crtc_lut = data;
4074 struct drm_crtc *crtc;
4075 void *r_base, *g_base, *b_base;
4079 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4082 drm_modeset_lock_all(dev);
4083 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4089 if (crtc->funcs->gamma_set == NULL) {
4094 /* memcpy into gamma store */
4095 if (crtc_lut->gamma_size != crtc->gamma_size) {
4100 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4101 r_base = crtc->gamma_store;
4102 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4107 g_base = (char *)r_base + size;
4108 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4113 b_base = (char *)g_base + size;
4114 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4119 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
4122 drm_modeset_unlock_all(dev);
4128 * drm_mode_gamma_get_ioctl - get the gamma table
4131 * @file_priv: DRM file info
4133 * Copy the current gamma table into the storage provided. This also provides
4134 * the gamma table size the driver expects, which can be used to size the
4135 * allocated storage.
4137 * Called by the user via ioctl.
4140 * Zero on success, errno on failure.
4142 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4143 void *data, struct drm_file *file_priv)
4145 struct drm_mode_crtc_lut *crtc_lut = data;
4146 struct drm_crtc *crtc;
4147 void *r_base, *g_base, *b_base;
4151 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4154 drm_modeset_lock_all(dev);
4155 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4161 /* memcpy into gamma store */
4162 if (crtc_lut->gamma_size != crtc->gamma_size) {
4167 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4168 r_base = crtc->gamma_store;
4169 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4174 g_base = (char *)r_base + size;
4175 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4180 b_base = (char *)g_base + size;
4181 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4186 drm_modeset_unlock_all(dev);
4191 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4194 * @file_priv: DRM file info
4196 * This schedules an asynchronous update on a given CRTC, called page flip.
4197 * Optionally a drm event is generated to signal the completion of the event.
4198 * Generic drivers cannot assume that a pageflip with changed framebuffer
4199 * properties (including driver specific metadata like tiling layout) will work,
4200 * but some drivers support e.g. pixel format changes through the pageflip
4203 * Called by the user via ioctl.
4206 * Zero on success, errno on failure.
4208 int drm_mode_page_flip_ioctl(struct drm_device *dev,
4209 void *data, struct drm_file *file_priv)
4211 struct drm_mode_crtc_page_flip *page_flip = data;
4212 struct drm_crtc *crtc;
4213 struct drm_framebuffer *fb = NULL, *old_fb = NULL;
4214 struct drm_pending_vblank_event *e = NULL;
4217 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4218 page_flip->reserved != 0)
4221 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4224 crtc = drm_crtc_find(dev, page_flip->crtc_id);
4228 drm_modeset_lock(&crtc->mutex, NULL);
4229 if (crtc->primary->fb == NULL) {
4230 /* The framebuffer is currently unbound, presumably
4231 * due to a hotplug event, that userspace has not
4238 if (crtc->funcs->page_flip == NULL)
4241 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
4247 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4251 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
4252 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4257 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4259 lockmgr(&dev->event_lock, LK_EXCLUSIVE);
4260 if (file_priv->event_space < sizeof e->event) {
4261 lockmgr(&dev->event_lock, LK_RELEASE);
4264 file_priv->event_space -= sizeof e->event;
4265 lockmgr(&dev->event_lock, LK_RELEASE);
4267 e = kzalloc(sizeof *e, GFP_KERNEL);
4269 lockmgr(&dev->event_lock, LK_EXCLUSIVE);
4270 file_priv->event_space += sizeof e->event;
4271 lockmgr(&dev->event_lock, LK_RELEASE);
4275 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
4276 e->event.base.length = sizeof e->event;
4277 e->event.user_data = page_flip->user_data;
4278 e->base.event = &e->event.base;
4279 e->base.file_priv = file_priv;
4281 (void (*) (struct drm_pending_event *)) kfree;
4284 old_fb = crtc->primary->fb;
4285 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
4287 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4288 lockmgr(&dev->event_lock, LK_EXCLUSIVE);
4289 file_priv->event_space += sizeof e->event;
4290 lockmgr(&dev->event_lock, LK_RELEASE);
4293 /* Keep the old fb, don't unref it. */
4297 * Warn if the driver hasn't properly updated the crtc->fb
4298 * field to reflect that the new framebuffer is now used.
4299 * Failing to do so will screw with the reference counting
4302 WARN_ON(crtc->primary->fb != fb);
4303 /* Unref only the old framebuffer. */
4309 drm_framebuffer_unreference(fb);
4311 drm_framebuffer_unreference(old_fb);
4312 drm_modeset_unlock(&crtc->mutex);
4318 * drm_mode_config_reset - call ->reset callbacks
4321 * This functions calls all the crtc's, encoder's and connector's ->reset
4322 * callback. Drivers can use this in e.g. their driver load or resume code to
4323 * reset hardware and software state.
4325 void drm_mode_config_reset(struct drm_device *dev)
4327 struct drm_crtc *crtc;
4328 struct drm_encoder *encoder;
4329 struct drm_connector *connector;
4331 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4332 if (crtc->funcs->reset)
4333 crtc->funcs->reset(crtc);
4335 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4336 if (encoder->funcs->reset)
4337 encoder->funcs->reset(encoder);
4339 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4340 connector->status = connector_status_unknown;
4342 if (connector->funcs->reset)
4343 connector->funcs->reset(connector);
4346 EXPORT_SYMBOL(drm_mode_config_reset);
4349 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4352 * @file_priv: DRM file info
4354 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4355 * TTM or something else entirely) and returns the resulting buffer handle. This
4356 * handle can then be wrapped up into a framebuffer modeset object.
4358 * Note that userspace is not allowed to use such objects for render
4359 * acceleration - drivers must create their own private ioctls for such a use
4362 * Called by the user via ioctl.
4365 * Zero on success, errno on failure.
4367 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
4368 void *data, struct drm_file *file_priv)
4370 struct drm_mode_create_dumb *args = data;
4371 u32 cpp, stride, size;
4373 if (!dev->driver->dumb_create)
4375 if (!args->width || !args->height || !args->bpp)
4378 /* overflow checks for 32bit size calculations */
4379 cpp = DIV_ROUND_UP(args->bpp, 8);
4380 if (cpp > 0xffffffffU / args->width)
4382 stride = cpp * args->width;
4383 if (args->height > 0xffffffffU / stride)
4386 /* test for wrap-around */
4387 size = args->height * stride;
4388 if (PAGE_ALIGN(size) == 0)
4391 return dev->driver->dumb_create(file_priv, dev, args);
4395 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4398 * @file_priv: DRM file info
4400 * Allocate an offset in the drm device node's address space to be able to
4401 * memory map a dumb buffer.
4403 * Called by the user via ioctl.
4406 * Zero on success, errno on failure.
4408 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
4409 void *data, struct drm_file *file_priv)
4411 struct drm_mode_map_dumb *args = data;
4413 /* call driver ioctl to get mmap offset */
4414 if (!dev->driver->dumb_map_offset)
4417 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
4421 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4424 * @file_priv: DRM file info
4426 * This destroys the userspace handle for the given dumb backing storage buffer.
4427 * Since buffer objects must be reference counted in the kernel a buffer object
4428 * won't be immediately freed if a framebuffer modeset object still uses it.
4430 * Called by the user via ioctl.
4433 * Zero on success, errno on failure.
4435 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
4436 void *data, struct drm_file *file_priv)
4438 struct drm_mode_destroy_dumb *args = data;
4440 if (!dev->driver->dumb_destroy)
4443 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
4447 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4448 * @format: pixel format (DRM_FORMAT_*)
4449 * @depth: storage for the depth value
4450 * @bpp: storage for the bpp value
4452 * This only supports RGB formats here for compat with code that doesn't use
4453 * pixel formats directly yet.
4455 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
4460 case DRM_FORMAT_RGB332:
4461 case DRM_FORMAT_BGR233:
4465 case DRM_FORMAT_XRGB1555:
4466 case DRM_FORMAT_XBGR1555:
4467 case DRM_FORMAT_RGBX5551:
4468 case DRM_FORMAT_BGRX5551:
4469 case DRM_FORMAT_ARGB1555:
4470 case DRM_FORMAT_ABGR1555:
4471 case DRM_FORMAT_RGBA5551:
4472 case DRM_FORMAT_BGRA5551:
4476 case DRM_FORMAT_RGB565:
4477 case DRM_FORMAT_BGR565:
4481 case DRM_FORMAT_RGB888:
4482 case DRM_FORMAT_BGR888:
4486 case DRM_FORMAT_XRGB8888:
4487 case DRM_FORMAT_XBGR8888:
4488 case DRM_FORMAT_RGBX8888:
4489 case DRM_FORMAT_BGRX8888:
4493 case DRM_FORMAT_XRGB2101010:
4494 case DRM_FORMAT_XBGR2101010:
4495 case DRM_FORMAT_RGBX1010102:
4496 case DRM_FORMAT_BGRX1010102:
4497 case DRM_FORMAT_ARGB2101010:
4498 case DRM_FORMAT_ABGR2101010:
4499 case DRM_FORMAT_RGBA1010102:
4500 case DRM_FORMAT_BGRA1010102:
4504 case DRM_FORMAT_ARGB8888:
4505 case DRM_FORMAT_ABGR8888:
4506 case DRM_FORMAT_RGBA8888:
4507 case DRM_FORMAT_BGRA8888:
4512 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4513 drm_get_format_name(format));
4519 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
4522 * drm_format_num_planes - get the number of planes for format
4523 * @format: pixel format (DRM_FORMAT_*)
4526 * The number of planes used by the specified pixel format.
4528 int drm_format_num_planes(uint32_t format)
4531 case DRM_FORMAT_YUV410:
4532 case DRM_FORMAT_YVU410:
4533 case DRM_FORMAT_YUV411:
4534 case DRM_FORMAT_YVU411:
4535 case DRM_FORMAT_YUV420:
4536 case DRM_FORMAT_YVU420:
4537 case DRM_FORMAT_YUV422:
4538 case DRM_FORMAT_YVU422:
4539 case DRM_FORMAT_YUV444:
4540 case DRM_FORMAT_YVU444:
4542 case DRM_FORMAT_NV12:
4543 case DRM_FORMAT_NV21:
4544 case DRM_FORMAT_NV16:
4545 case DRM_FORMAT_NV61:
4546 case DRM_FORMAT_NV24:
4547 case DRM_FORMAT_NV42:
4553 EXPORT_SYMBOL(drm_format_num_planes);
4556 * drm_format_plane_cpp - determine the bytes per pixel value
4557 * @format: pixel format (DRM_FORMAT_*)
4558 * @plane: plane index
4561 * The bytes per pixel value for the specified plane.
4563 int drm_format_plane_cpp(uint32_t format, int plane)
4568 if (plane >= drm_format_num_planes(format))
4572 case DRM_FORMAT_YUYV:
4573 case DRM_FORMAT_YVYU:
4574 case DRM_FORMAT_UYVY:
4575 case DRM_FORMAT_VYUY:
4577 case DRM_FORMAT_NV12:
4578 case DRM_FORMAT_NV21:
4579 case DRM_FORMAT_NV16:
4580 case DRM_FORMAT_NV61:
4581 case DRM_FORMAT_NV24:
4582 case DRM_FORMAT_NV42:
4583 return plane ? 2 : 1;
4584 case DRM_FORMAT_YUV410:
4585 case DRM_FORMAT_YVU410:
4586 case DRM_FORMAT_YUV411:
4587 case DRM_FORMAT_YVU411:
4588 case DRM_FORMAT_YUV420:
4589 case DRM_FORMAT_YVU420:
4590 case DRM_FORMAT_YUV422:
4591 case DRM_FORMAT_YVU422:
4592 case DRM_FORMAT_YUV444:
4593 case DRM_FORMAT_YVU444:
4596 drm_fb_get_bpp_depth(format, &depth, &bpp);
4600 EXPORT_SYMBOL(drm_format_plane_cpp);
4603 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
4604 * @format: pixel format (DRM_FORMAT_*)
4607 * The horizontal chroma subsampling factor for the
4608 * specified pixel format.
4610 int drm_format_horz_chroma_subsampling(uint32_t format)
4613 case DRM_FORMAT_YUV411:
4614 case DRM_FORMAT_YVU411:
4615 case DRM_FORMAT_YUV410:
4616 case DRM_FORMAT_YVU410:
4618 case DRM_FORMAT_YUYV:
4619 case DRM_FORMAT_YVYU:
4620 case DRM_FORMAT_UYVY:
4621 case DRM_FORMAT_VYUY:
4622 case DRM_FORMAT_NV12:
4623 case DRM_FORMAT_NV21:
4624 case DRM_FORMAT_NV16:
4625 case DRM_FORMAT_NV61:
4626 case DRM_FORMAT_YUV422:
4627 case DRM_FORMAT_YVU422:
4628 case DRM_FORMAT_YUV420:
4629 case DRM_FORMAT_YVU420:
4635 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
4638 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
4639 * @format: pixel format (DRM_FORMAT_*)
4642 * The vertical chroma subsampling factor for the
4643 * specified pixel format.
4645 int drm_format_vert_chroma_subsampling(uint32_t format)
4648 case DRM_FORMAT_YUV410:
4649 case DRM_FORMAT_YVU410:
4651 case DRM_FORMAT_YUV420:
4652 case DRM_FORMAT_YVU420:
4653 case DRM_FORMAT_NV12:
4654 case DRM_FORMAT_NV21:
4660 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
4663 * drm_mode_config_init - initialize DRM mode_configuration structure
4666 * Initialize @dev's mode_config structure, used for tracking the graphics
4667 * configuration of @dev.
4669 * Since this initializes the modeset locks, no locking is possible. Which is no
4670 * problem, since this should happen single threaded at init time. It is the
4671 * driver's problem to ensure this guarantee.
4674 void drm_mode_config_init(struct drm_device *dev)
4676 lockinit(&dev->mode_config.mutex, "drmmcm", 0, LK_CANRECURSE);
4677 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
4678 lockinit(&dev->mode_config.idr_mutex, "mcfgidr", 0, LK_CANRECURSE);
4679 lockinit(&dev->mode_config.fb_lock, "drmfbl", 0, LK_CANRECURSE);
4680 INIT_LIST_HEAD(&dev->mode_config.fb_list);
4681 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
4682 INIT_LIST_HEAD(&dev->mode_config.connector_list);
4683 INIT_LIST_HEAD(&dev->mode_config.bridge_list);
4684 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
4685 INIT_LIST_HEAD(&dev->mode_config.property_list);
4686 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
4687 INIT_LIST_HEAD(&dev->mode_config.plane_list);
4688 idr_init(&dev->mode_config.crtc_idr);
4690 drm_modeset_lock_all(dev);
4691 drm_mode_create_standard_connector_properties(dev);
4692 drm_mode_create_standard_plane_properties(dev);
4693 drm_modeset_unlock_all(dev);
4695 /* Just to be sure */
4696 dev->mode_config.num_fb = 0;
4697 dev->mode_config.num_connector = 0;
4698 dev->mode_config.num_crtc = 0;
4699 dev->mode_config.num_encoder = 0;
4700 dev->mode_config.num_overlay_plane = 0;
4701 dev->mode_config.num_total_plane = 0;
4703 EXPORT_SYMBOL(drm_mode_config_init);
4706 * drm_mode_config_cleanup - free up DRM mode_config info
4709 * Free up all the connectors and CRTCs associated with this DRM device, then
4710 * free up the framebuffers and associated buffer objects.
4712 * Note that since this /should/ happen single-threaded at driver/device
4713 * teardown time, no locking is required. It's the driver's job to ensure that
4714 * this guarantee actually holds true.
4716 * FIXME: cleanup any dangling user buffer objects too
4718 void drm_mode_config_cleanup(struct drm_device *dev)
4720 struct drm_connector *connector, *ot;
4721 struct drm_crtc *crtc, *ct;
4722 struct drm_encoder *encoder, *enct;
4723 struct drm_bridge *bridge, *brt;
4724 struct drm_framebuffer *fb, *fbt;
4725 struct drm_property *property, *pt;
4726 struct drm_property_blob *blob, *bt;
4727 struct drm_plane *plane, *plt;
4729 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
4731 encoder->funcs->destroy(encoder);
4734 list_for_each_entry_safe(bridge, brt,
4735 &dev->mode_config.bridge_list, head) {
4736 bridge->funcs->destroy(bridge);
4739 list_for_each_entry_safe(connector, ot,
4740 &dev->mode_config.connector_list, head) {
4741 connector->funcs->destroy(connector);
4744 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
4746 drm_property_destroy(dev, property);
4749 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
4751 drm_property_destroy_blob(dev, blob);
4755 * Single-threaded teardown context, so it's not required to grab the
4756 * fb_lock to protect against concurrent fb_list access. Contrary, it
4757 * would actually deadlock with the drm_framebuffer_cleanup function.
4759 * Also, if there are any framebuffers left, that's a driver leak now,
4760 * so politely WARN about this.
4762 WARN_ON(!list_empty(&dev->mode_config.fb_list));
4763 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
4764 drm_framebuffer_remove(fb);
4767 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
4769 plane->funcs->destroy(plane);
4772 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
4773 crtc->funcs->destroy(crtc);
4776 idr_destroy(&dev->mode_config.crtc_idr);
4777 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
4779 EXPORT_SYMBOL(drm_mode_config_cleanup);