2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
6 * DRM core CRTC related functions
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
32 #include <linux/ctype.h>
33 #include <linux/list.h>
34 #include <linux/slab.h>
35 #include <linux/export.h>
37 #include <drm/drm_crtc.h>
38 #include <drm/drm_edid.h>
39 #include <drm/drm_fourcc.h>
40 #include <drm/drm_modeset_lock.h>
42 #include "drm_crtc_internal.h"
45 * drm_modeset_lock_all - take all modeset locks
48 * This function takes all modeset locks, suitable where a more fine-grained
49 * scheme isn't (yet) implemented. Locks must be dropped with
50 * drm_modeset_unlock_all.
52 void drm_modeset_lock_all(struct drm_device *dev)
54 struct drm_mode_config *config = &dev->mode_config;
55 struct drm_modeset_acquire_ctx *ctx;
58 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
62 mutex_lock(&config->mutex);
64 drm_modeset_acquire_init(ctx, 0);
67 ret = drm_modeset_lock(&config->connection_mutex, ctx);
70 ret = drm_modeset_lock_all_crtcs(dev, ctx);
74 WARN_ON(config->acquire_ctx);
76 /* now we hold the locks, so now that it is safe, stash the
77 * ctx for drm_modeset_unlock_all():
79 config->acquire_ctx = ctx;
81 drm_warn_on_modeset_not_all_locked(dev);
86 if (ret == -EDEADLK) {
87 drm_modeset_backoff(ctx);
91 EXPORT_SYMBOL(drm_modeset_lock_all);
94 * drm_modeset_unlock_all - drop all modeset locks
97 * This function drop all modeset locks taken by drm_modeset_lock_all.
99 void drm_modeset_unlock_all(struct drm_device *dev)
101 struct drm_mode_config *config = &dev->mode_config;
102 struct drm_modeset_acquire_ctx *ctx = config->acquire_ctx;
107 config->acquire_ctx = NULL;
108 drm_modeset_drop_locks(ctx);
109 drm_modeset_acquire_fini(ctx);
113 mutex_unlock(&dev->mode_config.mutex);
115 EXPORT_SYMBOL(drm_modeset_unlock_all);
118 * drm_warn_on_modeset_not_all_locked - check that all modeset locks are locked
121 * Useful as a debug assert.
123 void drm_warn_on_modeset_not_all_locked(struct drm_device *dev)
125 struct drm_crtc *crtc;
127 /* Locking is currently fubar in the panic handler. */
128 if (oops_in_progress)
131 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
132 WARN_ON(!drm_modeset_is_locked(&crtc->mutex));
134 WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
135 WARN_ON(!mutex_is_locked(&dev->mode_config.mutex));
137 EXPORT_SYMBOL(drm_warn_on_modeset_not_all_locked);
139 /* Avoid boilerplate. I'm tired of typing. */
140 #define DRM_ENUM_NAME_FN(fnname, list) \
141 const char *fnname(int val) \
144 for (i = 0; i < ARRAY_SIZE(list); i++) { \
145 if (list[i].type == val) \
146 return list[i].name; \
148 return "(unknown)"; \
154 static const struct drm_prop_enum_list drm_dpms_enum_list[] =
155 { { DRM_MODE_DPMS_ON, "On" },
156 { DRM_MODE_DPMS_STANDBY, "Standby" },
157 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
158 { DRM_MODE_DPMS_OFF, "Off" }
161 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
163 static const struct drm_prop_enum_list drm_plane_type_enum_list[] =
165 { DRM_PLANE_TYPE_OVERLAY, "Overlay" },
166 { DRM_PLANE_TYPE_PRIMARY, "Primary" },
167 { DRM_PLANE_TYPE_CURSOR, "Cursor" },
171 * Optional properties
173 static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
175 { DRM_MODE_SCALE_NONE, "None" },
176 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
177 { DRM_MODE_SCALE_CENTER, "Center" },
178 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
182 * Non-global properties, but "required" for certain connectors.
184 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
186 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
187 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
188 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
191 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
193 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
195 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
196 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
197 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
200 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
201 drm_dvi_i_subconnector_enum_list)
203 static const struct drm_prop_enum_list drm_tv_select_enum_list[] =
205 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
206 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
207 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
208 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
209 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
212 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
214 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
216 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
217 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
218 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
219 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
220 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
223 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
224 drm_tv_subconnector_enum_list)
226 static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
227 { DRM_MODE_DIRTY_OFF, "Off" },
228 { DRM_MODE_DIRTY_ON, "On" },
229 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
232 struct drm_conn_prop_enum_list {
239 * Connector and encoder types.
241 static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
242 { { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
243 { DRM_MODE_CONNECTOR_VGA, "VGA" },
244 { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
245 { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
246 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
247 { DRM_MODE_CONNECTOR_Composite, "Composite" },
248 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
249 { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
250 { DRM_MODE_CONNECTOR_Component, "Component" },
251 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
252 { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
253 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
254 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
255 { DRM_MODE_CONNECTOR_TV, "TV" },
256 { DRM_MODE_CONNECTOR_eDP, "eDP" },
257 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
258 { DRM_MODE_CONNECTOR_DSI, "DSI" },
261 static const struct drm_prop_enum_list drm_encoder_enum_list[] =
262 { { DRM_MODE_ENCODER_NONE, "None" },
263 { DRM_MODE_ENCODER_DAC, "DAC" },
264 { DRM_MODE_ENCODER_TMDS, "TMDS" },
265 { DRM_MODE_ENCODER_LVDS, "LVDS" },
266 { DRM_MODE_ENCODER_TVDAC, "TV" },
267 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
268 { DRM_MODE_ENCODER_DSI, "DSI" },
269 { DRM_MODE_ENCODER_DPMST, "DP MST" },
272 static const struct drm_prop_enum_list drm_subpixel_enum_list[] =
274 { SubPixelUnknown, "Unknown" },
275 { SubPixelHorizontalRGB, "Horizontal RGB" },
276 { SubPixelHorizontalBGR, "Horizontal BGR" },
277 { SubPixelVerticalRGB, "Vertical RGB" },
278 { SubPixelVerticalBGR, "Vertical BGR" },
279 { SubPixelNone, "None" },
282 void drm_connector_ida_init(void)
286 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
287 ida_init(&drm_connector_enum_list[i].ida);
290 void drm_connector_ida_destroy(void)
294 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
295 ida_destroy(&drm_connector_enum_list[i].ida);
299 * drm_get_connector_status_name - return a string for connector status
300 * @status: connector status to compute name of
302 * In contrast to the other drm_get_*_name functions this one here returns a
303 * const pointer and hence is threadsafe.
305 const char *drm_get_connector_status_name(enum drm_connector_status status)
307 if (status == connector_status_connected)
309 else if (status == connector_status_disconnected)
310 return "disconnected";
314 EXPORT_SYMBOL(drm_get_connector_status_name);
317 * drm_get_subpixel_order_name - return a string for a given subpixel enum
318 * @order: enum of subpixel_order
320 * Note you could abuse this and return something out of bounds, but that
321 * would be a caller error. No unscrubbed user data should make it here.
323 const char *drm_get_subpixel_order_name(enum subpixel_order order)
325 return drm_subpixel_enum_list[order].name;
327 EXPORT_SYMBOL(drm_get_subpixel_order_name);
329 static char printable_char(int c)
331 return isascii(c) && isprint(c) ? c : '?';
335 * drm_get_format_name - return a string for drm fourcc format
336 * @format: format to compute name of
338 * Note that the buffer used by this function is globally shared and owned by
339 * the function itself.
341 * FIXME: This isn't really multithreading safe.
343 const char *drm_get_format_name(uint32_t format)
347 snprintf(buf, sizeof(buf),
348 "%c%c%c%c %s-endian (0x%08x)",
349 printable_char(format & 0xff),
350 printable_char((format >> 8) & 0xff),
351 printable_char((format >> 16) & 0xff),
352 printable_char((format >> 24) & 0x7f),
353 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
358 EXPORT_SYMBOL(drm_get_format_name);
361 * drm_mode_object_get - allocate a new modeset identifier
363 * @obj: object pointer, used to generate unique ID
364 * @obj_type: object type
366 * Create a unique identifier based on @ptr in @dev's identifier space. Used
367 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
368 * modeset identifiers are _not_ reference counted. Hence don't use this for
369 * reference counted modeset objects like framebuffers.
372 * New unique (relative to other objects in @dev) integer identifier for the
375 int drm_mode_object_get(struct drm_device *dev,
376 struct drm_mode_object *obj, uint32_t obj_type)
380 mutex_lock(&dev->mode_config.idr_mutex);
381 ret = idr_alloc(&dev->mode_config.crtc_idr, obj, 1, 0, GFP_KERNEL);
384 * Set up the object linking under the protection of the idr
385 * lock so that other users can't see inconsistent state.
388 obj->type = obj_type;
390 mutex_unlock(&dev->mode_config.idr_mutex);
392 return ret < 0 ? ret : 0;
396 * drm_mode_object_put - free a modeset identifer
398 * @object: object to free
400 * Free @id from @dev's unique identifier pool. Note that despite the _get
401 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
402 * for reference counted modeset objects like framebuffers.
404 void drm_mode_object_put(struct drm_device *dev,
405 struct drm_mode_object *object)
407 mutex_lock(&dev->mode_config.idr_mutex);
408 idr_remove(&dev->mode_config.crtc_idr, object->id);
409 mutex_unlock(&dev->mode_config.idr_mutex);
412 static struct drm_mode_object *_object_find(struct drm_device *dev,
413 uint32_t id, uint32_t type)
415 struct drm_mode_object *obj = NULL;
417 mutex_lock(&dev->mode_config.idr_mutex);
418 obj = idr_find(&dev->mode_config.crtc_idr, id);
419 if (!obj || (type != DRM_MODE_OBJECT_ANY && obj->type != type) ||
422 mutex_unlock(&dev->mode_config.idr_mutex);
428 * drm_mode_object_find - look up a drm object with static lifetime
430 * @id: id of the mode object
431 * @type: type of the mode object
433 * Note that framebuffers cannot be looked up with this functions - since those
434 * are reference counted, they need special treatment. Even with
435 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
436 * rather than WARN_ON()).
438 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
439 uint32_t id, uint32_t type)
441 struct drm_mode_object *obj = NULL;
443 /* Framebuffers are reference counted and need their own lookup
445 WARN_ON(type == DRM_MODE_OBJECT_FB);
446 obj = _object_find(dev, id, type);
447 /* don't leak out unref'd fb's */
448 if (obj && (obj->type == DRM_MODE_OBJECT_FB))
452 EXPORT_SYMBOL(drm_mode_object_find);
455 * drm_framebuffer_init - initialize a framebuffer
457 * @fb: framebuffer to be initialized
458 * @funcs: ... with these functions
460 * Allocates an ID for the framebuffer's parent mode object, sets its mode
461 * functions & device file and adds it to the master fd list.
464 * This functions publishes the fb and makes it available for concurrent access
465 * by other users. Which means by this point the fb _must_ be fully set up -
466 * since all the fb attributes are invariant over its lifetime, no further
467 * locking but only correct reference counting is required.
470 * Zero on success, error code on failure.
472 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
473 const struct drm_framebuffer_funcs *funcs)
477 mutex_lock(&dev->mode_config.fb_lock);
478 kref_init(&fb->refcount);
479 INIT_LIST_HEAD(&fb->filp_head);
483 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
487 /* Grab the idr reference. */
488 drm_framebuffer_reference(fb);
490 dev->mode_config.num_fb++;
491 list_add(&fb->head, &dev->mode_config.fb_list);
493 mutex_unlock(&dev->mode_config.fb_lock);
497 EXPORT_SYMBOL(drm_framebuffer_init);
499 static void drm_framebuffer_free(struct kref *kref)
501 struct drm_framebuffer *fb =
502 container_of(kref, struct drm_framebuffer, refcount);
503 fb->funcs->destroy(fb);
506 static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
509 struct drm_mode_object *obj = NULL;
510 struct drm_framebuffer *fb;
512 mutex_lock(&dev->mode_config.idr_mutex);
513 obj = idr_find(&dev->mode_config.crtc_idr, id);
514 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
518 mutex_unlock(&dev->mode_config.idr_mutex);
524 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
526 * @id: id of the fb object
528 * If successful, this grabs an additional reference to the framebuffer -
529 * callers need to make sure to eventually unreference the returned framebuffer
530 * again, using @drm_framebuffer_unreference.
532 struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
535 struct drm_framebuffer *fb;
537 mutex_lock(&dev->mode_config.fb_lock);
538 fb = __drm_framebuffer_lookup(dev, id);
540 drm_framebuffer_reference(fb);
541 mutex_unlock(&dev->mode_config.fb_lock);
545 EXPORT_SYMBOL(drm_framebuffer_lookup);
548 * drm_framebuffer_unreference - unref a framebuffer
549 * @fb: framebuffer to unref
551 * This functions decrements the fb's refcount and frees it if it drops to zero.
553 void drm_framebuffer_unreference(struct drm_framebuffer *fb)
555 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
556 kref_put(&fb->refcount, drm_framebuffer_free);
558 EXPORT_SYMBOL(drm_framebuffer_unreference);
561 * drm_framebuffer_reference - incr the fb refcnt
564 * This functions increments the fb's refcount.
566 void drm_framebuffer_reference(struct drm_framebuffer *fb)
568 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
569 kref_get(&fb->refcount);
571 EXPORT_SYMBOL(drm_framebuffer_reference);
573 static void drm_framebuffer_free_bug(struct kref *kref)
578 static void __drm_framebuffer_unreference(struct drm_framebuffer *fb)
580 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
581 kref_put(&fb->refcount, drm_framebuffer_free_bug);
584 /* dev->mode_config.fb_lock must be held! */
585 static void __drm_framebuffer_unregister(struct drm_device *dev,
586 struct drm_framebuffer *fb)
588 mutex_lock(&dev->mode_config.idr_mutex);
589 idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
590 mutex_unlock(&dev->mode_config.idr_mutex);
594 __drm_framebuffer_unreference(fb);
598 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
599 * @fb: fb to unregister
601 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
602 * those used for fbdev. Note that the caller must hold a reference of it's own,
603 * i.e. the object may not be destroyed through this call (since it'll lead to a
604 * locking inversion).
606 void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
608 struct drm_device *dev = fb->dev;
610 mutex_lock(&dev->mode_config.fb_lock);
611 /* Mark fb as reaped and drop idr ref. */
612 __drm_framebuffer_unregister(dev, fb);
613 mutex_unlock(&dev->mode_config.fb_lock);
615 EXPORT_SYMBOL(drm_framebuffer_unregister_private);
618 * drm_framebuffer_cleanup - remove a framebuffer object
619 * @fb: framebuffer to remove
621 * Cleanup framebuffer. This function is intended to be used from the drivers
622 * ->destroy callback. It can also be used to clean up driver private
623 * framebuffers embedded into a larger structure.
625 * Note that this function does not remove the fb from active usuage - if it is
626 * still used anywhere, hilarity can ensue since userspace could call getfb on
627 * the id and get back -EINVAL. Obviously no concern at driver unload time.
629 * Also, the framebuffer will not be removed from the lookup idr - for
630 * user-created framebuffers this will happen in in the rmfb ioctl. For
631 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
632 * drm_framebuffer_unregister_private.
634 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
636 struct drm_device *dev = fb->dev;
638 mutex_lock(&dev->mode_config.fb_lock);
640 dev->mode_config.num_fb--;
641 mutex_unlock(&dev->mode_config.fb_lock);
643 EXPORT_SYMBOL(drm_framebuffer_cleanup);
646 * drm_framebuffer_remove - remove and unreference a framebuffer object
647 * @fb: framebuffer to remove
649 * Scans all the CRTCs and planes in @dev's mode_config. If they're
650 * using @fb, removes it, setting it to NULL. Then drops the reference to the
651 * passed-in framebuffer. Might take the modeset locks.
653 * Note that this function optimizes the cleanup away if the caller holds the
654 * last reference to the framebuffer. It is also guaranteed to not take the
655 * modeset locks in this case.
657 void drm_framebuffer_remove(struct drm_framebuffer *fb)
659 struct drm_device *dev = fb->dev;
660 struct drm_crtc *crtc;
661 struct drm_plane *plane;
662 struct drm_mode_set set;
665 WARN_ON(!list_empty(&fb->filp_head));
668 * drm ABI mandates that we remove any deleted framebuffers from active
669 * useage. But since most sane clients only remove framebuffers they no
670 * longer need, try to optimize this away.
672 * Since we're holding a reference ourselves, observing a refcount of 1
673 * means that we're the last holder and can skip it. Also, the refcount
674 * can never increase from 1 again, so we don't need any barriers or
677 * Note that userspace could try to race with use and instate a new
678 * usage _after_ we've cleared all current ones. End result will be an
679 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
682 if (atomic_read(&fb->refcount.refcount) > 1) {
683 drm_modeset_lock_all(dev);
684 /* remove from any CRTC */
685 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
686 if (crtc->primary->fb == fb) {
687 /* should turn off the crtc */
688 memset(&set, 0, sizeof(struct drm_mode_set));
691 ret = drm_mode_set_config_internal(&set);
693 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
697 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
699 drm_plane_force_disable(plane);
701 drm_modeset_unlock_all(dev);
704 drm_framebuffer_unreference(fb);
706 EXPORT_SYMBOL(drm_framebuffer_remove);
708 DEFINE_WW_CLASS(crtc_ww_class);
711 * drm_crtc_init_with_planes - Initialise a new CRTC object with
712 * specified primary and cursor planes.
714 * @crtc: CRTC object to init
715 * @primary: Primary plane for CRTC
716 * @cursor: Cursor plane for CRTC
717 * @funcs: callbacks for the new CRTC
719 * Inits a new object created as base part of a driver crtc object.
722 * Zero on success, error code on failure.
724 int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
725 struct drm_plane *primary,
727 const struct drm_crtc_funcs *funcs)
729 struct drm_mode_config *config = &dev->mode_config;
734 crtc->invert_dimensions = false;
736 drm_modeset_lock_all(dev);
737 drm_modeset_lock_init(&crtc->mutex);
738 /* dropped by _unlock_all(): */
739 drm_modeset_lock(&crtc->mutex, config->acquire_ctx);
741 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
745 crtc->base.properties = &crtc->properties;
747 list_add_tail(&crtc->head, &config->crtc_list);
750 crtc->primary = primary;
752 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
755 drm_modeset_unlock_all(dev);
759 EXPORT_SYMBOL(drm_crtc_init_with_planes);
762 * drm_crtc_cleanup - Clean up the core crtc usage
763 * @crtc: CRTC to cleanup
765 * This function cleans up @crtc and removes it from the DRM mode setting
766 * core. Note that the function does *not* free the crtc structure itself,
767 * this is the responsibility of the caller.
769 void drm_crtc_cleanup(struct drm_crtc *crtc)
771 struct drm_device *dev = crtc->dev;
773 kfree(crtc->gamma_store);
774 crtc->gamma_store = NULL;
776 drm_modeset_lock_fini(&crtc->mutex);
778 drm_mode_object_put(dev, &crtc->base);
779 list_del(&crtc->head);
780 dev->mode_config.num_crtc--;
782 EXPORT_SYMBOL(drm_crtc_cleanup);
785 * drm_crtc_index - find the index of a registered CRTC
786 * @crtc: CRTC to find index for
788 * Given a registered CRTC, return the index of that CRTC within a DRM
789 * device's list of CRTCs.
791 unsigned int drm_crtc_index(struct drm_crtc *crtc)
793 unsigned int index = 0;
794 struct drm_crtc *tmp;
796 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
805 EXPORT_SYMBOL(drm_crtc_index);
808 * drm_mode_remove - remove and free a mode
809 * @connector: connector list to modify
810 * @mode: mode to remove
812 * Remove @mode from @connector's mode list, then free it.
814 static void drm_mode_remove(struct drm_connector *connector,
815 struct drm_display_mode *mode)
817 list_del(&mode->head);
818 drm_mode_destroy(connector->dev, mode);
822 * drm_connector_init - Init a preallocated connector
824 * @connector: the connector to init
825 * @funcs: callbacks for this connector
826 * @connector_type: user visible type of the connector
828 * Initialises a preallocated connector. Connectors should be
829 * subclassed as part of driver connector objects.
832 * Zero on success, error code on failure.
834 int drm_connector_init(struct drm_device *dev,
835 struct drm_connector *connector,
836 const struct drm_connector_funcs *funcs,
840 struct ida *connector_ida =
841 &drm_connector_enum_list[connector_type].ida;
843 drm_modeset_lock_all(dev);
845 ret = drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
849 connector->base.properties = &connector->properties;
850 connector->dev = dev;
851 connector->funcs = funcs;
852 connector->connector_type = connector_type;
853 connector->connector_type_id =
854 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
855 if (connector->connector_type_id < 0) {
856 ret = connector->connector_type_id;
860 kasprintf(GFP_KERNEL, "%s-%d",
861 drm_connector_enum_list[connector_type].name,
862 connector->connector_type_id);
863 if (!connector->name) {
868 INIT_LIST_HEAD(&connector->probed_modes);
869 INIT_LIST_HEAD(&connector->modes);
870 connector->edid_blob_ptr = NULL;
871 connector->status = connector_status_unknown;
873 list_add_tail(&connector->head, &dev->mode_config.connector_list);
874 dev->mode_config.num_connector++;
876 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
877 drm_object_attach_property(&connector->base,
878 dev->mode_config.edid_property,
881 drm_object_attach_property(&connector->base,
882 dev->mode_config.dpms_property, 0);
884 connector->debugfs_entry = NULL;
888 drm_mode_object_put(dev, &connector->base);
891 drm_modeset_unlock_all(dev);
895 EXPORT_SYMBOL(drm_connector_init);
898 * drm_connector_cleanup - cleans up an initialised connector
899 * @connector: connector to cleanup
901 * Cleans up the connector but doesn't free the object.
903 void drm_connector_cleanup(struct drm_connector *connector)
905 struct drm_device *dev = connector->dev;
906 struct drm_display_mode *mode, *t;
908 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
909 drm_mode_remove(connector, mode);
911 list_for_each_entry_safe(mode, t, &connector->modes, head)
912 drm_mode_remove(connector, mode);
914 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
915 connector->connector_type_id);
917 drm_mode_object_put(dev, &connector->base);
918 kfree(connector->name);
919 connector->name = NULL;
920 list_del(&connector->head);
921 dev->mode_config.num_connector--;
923 EXPORT_SYMBOL(drm_connector_cleanup);
926 * drm_connector_register - register a connector
927 * @connector: the connector to register
929 * Register userspace interfaces for a connector
932 * Zero on success, error code on failure.
934 int drm_connector_register(struct drm_connector *connector)
938 ret = drm_sysfs_connector_add(connector);
942 ret = drm_debugfs_connector_add(connector);
944 drm_sysfs_connector_remove(connector);
950 EXPORT_SYMBOL(drm_connector_register);
953 * drm_connector_unregister - unregister a connector
954 * @connector: the connector to unregister
956 * Unregister userspace interfaces for a connector
958 void drm_connector_unregister(struct drm_connector *connector)
960 drm_sysfs_connector_remove(connector);
961 drm_debugfs_connector_remove(connector);
963 EXPORT_SYMBOL(drm_connector_unregister);
967 * drm_connector_unplug_all - unregister connector userspace interfaces
970 * This function unregisters all connector userspace interfaces in sysfs. Should
971 * be call when the device is disconnected, e.g. from an usb driver's
972 * ->disconnect callback.
974 void drm_connector_unplug_all(struct drm_device *dev)
976 struct drm_connector *connector;
978 /* taking the mode config mutex ends up in a clash with sysfs */
979 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
980 drm_connector_unregister(connector);
983 EXPORT_SYMBOL(drm_connector_unplug_all);
986 * drm_bridge_init - initialize a drm transcoder/bridge
988 * @bridge: transcoder/bridge to set up
989 * @funcs: bridge function table
991 * Initialises a preallocated bridge. Bridges should be
992 * subclassed as part of driver connector objects.
995 * Zero on success, error code on failure.
997 int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
998 const struct drm_bridge_funcs *funcs)
1002 drm_modeset_lock_all(dev);
1004 ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
1009 bridge->funcs = funcs;
1011 list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
1012 dev->mode_config.num_bridge++;
1015 drm_modeset_unlock_all(dev);
1018 EXPORT_SYMBOL(drm_bridge_init);
1021 * drm_bridge_cleanup - cleans up an initialised bridge
1022 * @bridge: bridge to cleanup
1024 * Cleans up the bridge but doesn't free the object.
1026 void drm_bridge_cleanup(struct drm_bridge *bridge)
1028 struct drm_device *dev = bridge->dev;
1030 drm_modeset_lock_all(dev);
1031 drm_mode_object_put(dev, &bridge->base);
1032 list_del(&bridge->head);
1033 dev->mode_config.num_bridge--;
1034 drm_modeset_unlock_all(dev);
1036 EXPORT_SYMBOL(drm_bridge_cleanup);
1039 * drm_encoder_init - Init a preallocated encoder
1041 * @encoder: the encoder to init
1042 * @funcs: callbacks for this encoder
1043 * @encoder_type: user visible type of the encoder
1045 * Initialises a preallocated encoder. Encoder should be
1046 * subclassed as part of driver encoder objects.
1049 * Zero on success, error code on failure.
1051 int drm_encoder_init(struct drm_device *dev,
1052 struct drm_encoder *encoder,
1053 const struct drm_encoder_funcs *funcs,
1058 drm_modeset_lock_all(dev);
1060 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1065 encoder->encoder_type = encoder_type;
1066 encoder->funcs = funcs;
1067 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1068 drm_encoder_enum_list[encoder_type].name,
1070 if (!encoder->name) {
1075 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1076 dev->mode_config.num_encoder++;
1080 drm_mode_object_put(dev, &encoder->base);
1083 drm_modeset_unlock_all(dev);
1087 EXPORT_SYMBOL(drm_encoder_init);
1090 * drm_encoder_cleanup - cleans up an initialised encoder
1091 * @encoder: encoder to cleanup
1093 * Cleans up the encoder but doesn't free the object.
1095 void drm_encoder_cleanup(struct drm_encoder *encoder)
1097 struct drm_device *dev = encoder->dev;
1098 drm_modeset_lock_all(dev);
1099 drm_mode_object_put(dev, &encoder->base);
1100 kfree(encoder->name);
1101 encoder->name = NULL;
1102 list_del(&encoder->head);
1103 dev->mode_config.num_encoder--;
1104 drm_modeset_unlock_all(dev);
1106 EXPORT_SYMBOL(drm_encoder_cleanup);
1109 * drm_universal_plane_init - Initialize a new universal plane object
1111 * @plane: plane object to init
1112 * @possible_crtcs: bitmask of possible CRTCs
1113 * @funcs: callbacks for the new plane
1114 * @formats: array of supported formats (%DRM_FORMAT_*)
1115 * @format_count: number of elements in @formats
1116 * @type: type of plane (overlay, primary, cursor)
1118 * Initializes a plane object of type @type.
1121 * Zero on success, error code on failure.
1123 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1124 unsigned long possible_crtcs,
1125 const struct drm_plane_funcs *funcs,
1126 const uint32_t *formats, uint32_t format_count,
1127 enum drm_plane_type type)
1131 drm_modeset_lock_all(dev);
1133 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1137 plane->base.properties = &plane->properties;
1139 plane->funcs = funcs;
1140 plane->format_types = kmalloc(sizeof(uint32_t) * format_count,
1142 if (!plane->format_types) {
1143 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1144 drm_mode_object_put(dev, &plane->base);
1149 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1150 plane->format_count = format_count;
1151 plane->possible_crtcs = possible_crtcs;
1154 list_add_tail(&plane->head, &dev->mode_config.plane_list);
1155 dev->mode_config.num_total_plane++;
1156 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1157 dev->mode_config.num_overlay_plane++;
1159 drm_object_attach_property(&plane->base,
1160 dev->mode_config.plane_type_property,
1164 drm_modeset_unlock_all(dev);
1168 EXPORT_SYMBOL(drm_universal_plane_init);
1171 * drm_plane_init - Initialize a legacy plane
1173 * @plane: plane object to init
1174 * @possible_crtcs: bitmask of possible CRTCs
1175 * @funcs: callbacks for the new plane
1176 * @formats: array of supported formats (%DRM_FORMAT_*)
1177 * @format_count: number of elements in @formats
1178 * @is_primary: plane type (primary vs overlay)
1180 * Legacy API to initialize a DRM plane.
1182 * New drivers should call drm_universal_plane_init() instead.
1185 * Zero on success, error code on failure.
1187 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1188 unsigned long possible_crtcs,
1189 const struct drm_plane_funcs *funcs,
1190 const uint32_t *formats, uint32_t format_count,
1193 enum drm_plane_type type;
1195 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1196 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1197 formats, format_count, type);
1199 EXPORT_SYMBOL(drm_plane_init);
1202 * drm_plane_cleanup - Clean up the core plane usage
1203 * @plane: plane to cleanup
1205 * This function cleans up @plane and removes it from the DRM mode setting
1206 * core. Note that the function does *not* free the plane structure itself,
1207 * this is the responsibility of the caller.
1209 void drm_plane_cleanup(struct drm_plane *plane)
1211 struct drm_device *dev = plane->dev;
1213 drm_modeset_lock_all(dev);
1214 kfree(plane->format_types);
1215 drm_mode_object_put(dev, &plane->base);
1217 BUG_ON(list_empty(&plane->head));
1219 list_del(&plane->head);
1220 dev->mode_config.num_total_plane--;
1221 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1222 dev->mode_config.num_overlay_plane--;
1223 drm_modeset_unlock_all(dev);
1225 EXPORT_SYMBOL(drm_plane_cleanup);
1228 * drm_plane_force_disable - Forcibly disable a plane
1229 * @plane: plane to disable
1231 * Forces the plane to be disabled.
1233 * Used when the plane's current framebuffer is destroyed,
1234 * and when restoring fbdev mode.
1236 void drm_plane_force_disable(struct drm_plane *plane)
1238 struct drm_framebuffer *old_fb = plane->fb;
1244 ret = plane->funcs->disable_plane(plane);
1246 DRM_ERROR("failed to disable plane with busy fb\n");
1249 /* disconnect the plane from the fb and crtc: */
1250 __drm_framebuffer_unreference(old_fb);
1254 EXPORT_SYMBOL(drm_plane_force_disable);
1256 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
1258 struct drm_property *edid;
1259 struct drm_property *dpms;
1262 * Standard properties (apply to all connectors)
1264 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1265 DRM_MODE_PROP_IMMUTABLE,
1267 dev->mode_config.edid_property = edid;
1269 dpms = drm_property_create_enum(dev, 0,
1270 "DPMS", drm_dpms_enum_list,
1271 ARRAY_SIZE(drm_dpms_enum_list));
1272 dev->mode_config.dpms_property = dpms;
1277 static int drm_mode_create_standard_plane_properties(struct drm_device *dev)
1279 struct drm_property *type;
1282 * Standard properties (apply to all planes)
1284 type = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1285 "type", drm_plane_type_enum_list,
1286 ARRAY_SIZE(drm_plane_type_enum_list));
1287 dev->mode_config.plane_type_property = type;
1293 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1296 * Called by a driver the first time a DVI-I connector is made.
1298 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1300 struct drm_property *dvi_i_selector;
1301 struct drm_property *dvi_i_subconnector;
1303 if (dev->mode_config.dvi_i_select_subconnector_property)
1307 drm_property_create_enum(dev, 0,
1308 "select subconnector",
1309 drm_dvi_i_select_enum_list,
1310 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1311 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1313 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1315 drm_dvi_i_subconnector_enum_list,
1316 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1317 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1321 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1324 * drm_create_tv_properties - create TV specific connector properties
1326 * @num_modes: number of different TV formats (modes) supported
1327 * @modes: array of pointers to strings containing name of each format
1329 * Called by a driver's TV initialization routine, this function creates
1330 * the TV specific connector properties for a given device. Caller is
1331 * responsible for allocating a list of format names and passing them to
1334 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
1337 struct drm_property *tv_selector;
1338 struct drm_property *tv_subconnector;
1341 if (dev->mode_config.tv_select_subconnector_property)
1345 * Basic connector properties
1347 tv_selector = drm_property_create_enum(dev, 0,
1348 "select subconnector",
1349 drm_tv_select_enum_list,
1350 ARRAY_SIZE(drm_tv_select_enum_list));
1351 dev->mode_config.tv_select_subconnector_property = tv_selector;
1354 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1356 drm_tv_subconnector_enum_list,
1357 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1358 dev->mode_config.tv_subconnector_property = tv_subconnector;
1361 * Other, TV specific properties: margins & TV modes.
1363 dev->mode_config.tv_left_margin_property =
1364 drm_property_create_range(dev, 0, "left margin", 0, 100);
1366 dev->mode_config.tv_right_margin_property =
1367 drm_property_create_range(dev, 0, "right margin", 0, 100);
1369 dev->mode_config.tv_top_margin_property =
1370 drm_property_create_range(dev, 0, "top margin", 0, 100);
1372 dev->mode_config.tv_bottom_margin_property =
1373 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1375 dev->mode_config.tv_mode_property =
1376 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1378 for (i = 0; i < num_modes; i++)
1379 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1382 dev->mode_config.tv_brightness_property =
1383 drm_property_create_range(dev, 0, "brightness", 0, 100);
1385 dev->mode_config.tv_contrast_property =
1386 drm_property_create_range(dev, 0, "contrast", 0, 100);
1388 dev->mode_config.tv_flicker_reduction_property =
1389 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1391 dev->mode_config.tv_overscan_property =
1392 drm_property_create_range(dev, 0, "overscan", 0, 100);
1394 dev->mode_config.tv_saturation_property =
1395 drm_property_create_range(dev, 0, "saturation", 0, 100);
1397 dev->mode_config.tv_hue_property =
1398 drm_property_create_range(dev, 0, "hue", 0, 100);
1402 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1405 * drm_mode_create_scaling_mode_property - create scaling mode property
1408 * Called by a driver the first time it's needed, must be attached to desired
1411 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1413 struct drm_property *scaling_mode;
1415 if (dev->mode_config.scaling_mode_property)
1419 drm_property_create_enum(dev, 0, "scaling mode",
1420 drm_scaling_mode_enum_list,
1421 ARRAY_SIZE(drm_scaling_mode_enum_list));
1423 dev->mode_config.scaling_mode_property = scaling_mode;
1427 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1430 * drm_mode_create_dirty_property - create dirty property
1433 * Called by a driver the first time it's needed, must be attached to desired
1436 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1438 struct drm_property *dirty_info;
1440 if (dev->mode_config.dirty_info_property)
1444 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1446 drm_dirty_info_enum_list,
1447 ARRAY_SIZE(drm_dirty_info_enum_list));
1448 dev->mode_config.dirty_info_property = dirty_info;
1452 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1454 static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
1456 uint32_t total_objects = 0;
1458 total_objects += dev->mode_config.num_crtc;
1459 total_objects += dev->mode_config.num_connector;
1460 total_objects += dev->mode_config.num_encoder;
1461 total_objects += dev->mode_config.num_bridge;
1463 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
1464 if (!group->id_list)
1467 group->num_crtcs = 0;
1468 group->num_connectors = 0;
1469 group->num_encoders = 0;
1470 group->num_bridges = 0;
1474 void drm_mode_group_destroy(struct drm_mode_group *group)
1476 kfree(group->id_list);
1477 group->id_list = NULL;
1481 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1482 * the drm core's responsibility to set up mode control groups.
1484 int drm_mode_group_init_legacy_group(struct drm_device *dev,
1485 struct drm_mode_group *group)
1487 struct drm_crtc *crtc;
1488 struct drm_encoder *encoder;
1489 struct drm_connector *connector;
1490 struct drm_bridge *bridge;
1493 if ((ret = drm_mode_group_init(dev, group)))
1496 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1497 group->id_list[group->num_crtcs++] = crtc->base.id;
1499 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1500 group->id_list[group->num_crtcs + group->num_encoders++] =
1503 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1504 group->id_list[group->num_crtcs + group->num_encoders +
1505 group->num_connectors++] = connector->base.id;
1507 list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
1508 group->id_list[group->num_crtcs + group->num_encoders +
1509 group->num_connectors + group->num_bridges++] =
1514 EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
1517 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1518 * @out: drm_mode_modeinfo struct to return to the user
1519 * @in: drm_display_mode to use
1521 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1524 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1525 const struct drm_display_mode *in)
1527 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1528 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1529 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1530 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1531 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1532 "timing values too large for mode info\n");
1534 out->clock = in->clock;
1535 out->hdisplay = in->hdisplay;
1536 out->hsync_start = in->hsync_start;
1537 out->hsync_end = in->hsync_end;
1538 out->htotal = in->htotal;
1539 out->hskew = in->hskew;
1540 out->vdisplay = in->vdisplay;
1541 out->vsync_start = in->vsync_start;
1542 out->vsync_end = in->vsync_end;
1543 out->vtotal = in->vtotal;
1544 out->vscan = in->vscan;
1545 out->vrefresh = in->vrefresh;
1546 out->flags = in->flags;
1547 out->type = in->type;
1548 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1549 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1553 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1554 * @out: drm_display_mode to return to the user
1555 * @in: drm_mode_modeinfo to use
1557 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1561 * Zero on success, errno on failure.
1563 static int drm_crtc_convert_umode(struct drm_display_mode *out,
1564 const struct drm_mode_modeinfo *in)
1566 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1569 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1572 out->clock = in->clock;
1573 out->hdisplay = in->hdisplay;
1574 out->hsync_start = in->hsync_start;
1575 out->hsync_end = in->hsync_end;
1576 out->htotal = in->htotal;
1577 out->hskew = in->hskew;
1578 out->vdisplay = in->vdisplay;
1579 out->vsync_start = in->vsync_start;
1580 out->vsync_end = in->vsync_end;
1581 out->vtotal = in->vtotal;
1582 out->vscan = in->vscan;
1583 out->vrefresh = in->vrefresh;
1584 out->flags = in->flags;
1585 out->type = in->type;
1586 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1587 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1593 * drm_mode_getresources - get graphics configuration
1594 * @dev: drm device for the ioctl
1595 * @data: data pointer for the ioctl
1596 * @file_priv: drm file for the ioctl call
1598 * Construct a set of configuration description structures and return
1599 * them to the user, including CRTC, connector and framebuffer configuration.
1601 * Called by the user via ioctl.
1604 * Zero on success, errno on failure.
1606 int drm_mode_getresources(struct drm_device *dev, void *data,
1607 struct drm_file *file_priv)
1609 struct drm_mode_card_res *card_res = data;
1610 struct list_head *lh;
1611 struct drm_framebuffer *fb;
1612 struct drm_connector *connector;
1613 struct drm_crtc *crtc;
1614 struct drm_encoder *encoder;
1616 int connector_count = 0;
1619 int encoder_count = 0;
1621 uint32_t __user *fb_id;
1622 uint32_t __user *crtc_id;
1623 uint32_t __user *connector_id;
1624 uint32_t __user *encoder_id;
1625 struct drm_mode_group *mode_group;
1627 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1631 mutex_lock(&file_priv->fbs_lock);
1633 * For the non-control nodes we need to limit the list of resources
1634 * by IDs in the group list for this node
1636 list_for_each(lh, &file_priv->fbs)
1639 /* handle this in 4 parts */
1641 if (card_res->count_fbs >= fb_count) {
1643 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1644 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1645 if (put_user(fb->base.id, fb_id + copied)) {
1646 mutex_unlock(&file_priv->fbs_lock);
1652 card_res->count_fbs = fb_count;
1653 mutex_unlock(&file_priv->fbs_lock);
1655 drm_modeset_lock_all(dev);
1656 if (!drm_is_primary_client(file_priv)) {
1659 list_for_each(lh, &dev->mode_config.crtc_list)
1662 list_for_each(lh, &dev->mode_config.connector_list)
1665 list_for_each(lh, &dev->mode_config.encoder_list)
1669 mode_group = &file_priv->master->minor->mode_group;
1670 crtc_count = mode_group->num_crtcs;
1671 connector_count = mode_group->num_connectors;
1672 encoder_count = mode_group->num_encoders;
1675 card_res->max_height = dev->mode_config.max_height;
1676 card_res->min_height = dev->mode_config.min_height;
1677 card_res->max_width = dev->mode_config.max_width;
1678 card_res->min_width = dev->mode_config.min_width;
1681 if (card_res->count_crtcs >= crtc_count) {
1683 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1685 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1687 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1688 if (put_user(crtc->base.id, crtc_id + copied)) {
1695 for (i = 0; i < mode_group->num_crtcs; i++) {
1696 if (put_user(mode_group->id_list[i],
1697 crtc_id + copied)) {
1705 card_res->count_crtcs = crtc_count;
1708 if (card_res->count_encoders >= encoder_count) {
1710 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1712 list_for_each_entry(encoder,
1713 &dev->mode_config.encoder_list,
1715 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1717 if (put_user(encoder->base.id, encoder_id +
1725 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1726 if (put_user(mode_group->id_list[i],
1727 encoder_id + copied)) {
1736 card_res->count_encoders = encoder_count;
1739 if (card_res->count_connectors >= connector_count) {
1741 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1743 list_for_each_entry(connector,
1744 &dev->mode_config.connector_list,
1746 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1749 if (put_user(connector->base.id,
1750 connector_id + copied)) {
1757 int start = mode_group->num_crtcs +
1758 mode_group->num_encoders;
1759 for (i = start; i < start + mode_group->num_connectors; i++) {
1760 if (put_user(mode_group->id_list[i],
1761 connector_id + copied)) {
1769 card_res->count_connectors = connector_count;
1771 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1772 card_res->count_connectors, card_res->count_encoders);
1775 drm_modeset_unlock_all(dev);
1780 * drm_mode_getcrtc - get CRTC configuration
1781 * @dev: drm device for the ioctl
1782 * @data: data pointer for the ioctl
1783 * @file_priv: drm file for the ioctl call
1785 * Construct a CRTC configuration structure to return to the user.
1787 * Called by the user via ioctl.
1790 * Zero on success, errno on failure.
1792 int drm_mode_getcrtc(struct drm_device *dev,
1793 void *data, struct drm_file *file_priv)
1795 struct drm_mode_crtc *crtc_resp = data;
1796 struct drm_crtc *crtc;
1799 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1802 drm_modeset_lock_all(dev);
1804 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
1810 crtc_resp->x = crtc->x;
1811 crtc_resp->y = crtc->y;
1812 crtc_resp->gamma_size = crtc->gamma_size;
1813 if (crtc->primary->fb)
1814 crtc_resp->fb_id = crtc->primary->fb->base.id;
1816 crtc_resp->fb_id = 0;
1818 if (crtc->enabled) {
1820 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1821 crtc_resp->mode_valid = 1;
1824 crtc_resp->mode_valid = 0;
1828 drm_modeset_unlock_all(dev);
1832 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1833 const struct drm_file *file_priv)
1836 * If user-space hasn't configured the driver to expose the stereo 3D
1837 * modes, don't expose them.
1839 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1846 * drm_mode_getconnector - get connector configuration
1847 * @dev: drm device for the ioctl
1848 * @data: data pointer for the ioctl
1849 * @file_priv: drm file for the ioctl call
1851 * Construct a connector configuration structure to return to the user.
1853 * Called by the user via ioctl.
1856 * Zero on success, errno on failure.
1858 int drm_mode_getconnector(struct drm_device *dev, void *data,
1859 struct drm_file *file_priv)
1861 struct drm_mode_get_connector *out_resp = data;
1862 struct drm_connector *connector;
1863 struct drm_display_mode *mode;
1865 int props_count = 0;
1866 int encoders_count = 0;
1870 struct drm_mode_modeinfo u_mode;
1871 struct drm_mode_modeinfo __user *mode_ptr;
1872 uint32_t __user *prop_ptr;
1873 uint64_t __user *prop_values;
1874 uint32_t __user *encoder_ptr;
1876 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1879 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1881 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1883 mutex_lock(&dev->mode_config.mutex);
1885 connector = drm_connector_find(dev, out_resp->connector_id);
1891 props_count = connector->properties.count;
1893 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1894 if (connector->encoder_ids[i] != 0) {
1899 if (out_resp->count_modes == 0) {
1900 connector->funcs->fill_modes(connector,
1901 dev->mode_config.max_width,
1902 dev->mode_config.max_height);
1905 /* delayed so we get modes regardless of pre-fill_modes state */
1906 list_for_each_entry(mode, &connector->modes, head)
1907 if (drm_mode_expose_to_userspace(mode, file_priv))
1910 out_resp->connector_id = connector->base.id;
1911 out_resp->connector_type = connector->connector_type;
1912 out_resp->connector_type_id = connector->connector_type_id;
1913 out_resp->mm_width = connector->display_info.width_mm;
1914 out_resp->mm_height = connector->display_info.height_mm;
1915 out_resp->subpixel = connector->display_info.subpixel_order;
1916 out_resp->connection = connector->status;
1917 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
1918 if (connector->encoder)
1919 out_resp->encoder_id = connector->encoder->base.id;
1921 out_resp->encoder_id = 0;
1922 drm_modeset_unlock(&dev->mode_config.connection_mutex);
1925 * This ioctl is called twice, once to determine how much space is
1926 * needed, and the 2nd time to fill it.
1928 if ((out_resp->count_modes >= mode_count) && mode_count) {
1930 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
1931 list_for_each_entry(mode, &connector->modes, head) {
1932 if (!drm_mode_expose_to_userspace(mode, file_priv))
1935 drm_crtc_convert_to_umode(&u_mode, mode);
1936 if (copy_to_user(mode_ptr + copied,
1937 &u_mode, sizeof(u_mode))) {
1944 out_resp->count_modes = mode_count;
1946 if ((out_resp->count_props >= props_count) && props_count) {
1948 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
1949 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
1950 for (i = 0; i < connector->properties.count; i++) {
1951 if (put_user(connector->properties.ids[i],
1952 prop_ptr + copied)) {
1957 if (put_user(connector->properties.values[i],
1958 prop_values + copied)) {
1965 out_resp->count_props = props_count;
1967 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1969 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
1970 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1971 if (connector->encoder_ids[i] != 0) {
1972 if (put_user(connector->encoder_ids[i],
1973 encoder_ptr + copied)) {
1981 out_resp->count_encoders = encoders_count;
1984 mutex_unlock(&dev->mode_config.mutex);
1990 * drm_mode_getencoder - get encoder configuration
1991 * @dev: drm device for the ioctl
1992 * @data: data pointer for the ioctl
1993 * @file_priv: drm file for the ioctl call
1995 * Construct a encoder configuration structure to return to the user.
1997 * Called by the user via ioctl.
2000 * Zero on success, errno on failure.
2002 int drm_mode_getencoder(struct drm_device *dev, void *data,
2003 struct drm_file *file_priv)
2005 struct drm_mode_get_encoder *enc_resp = data;
2006 struct drm_encoder *encoder;
2009 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2012 drm_modeset_lock_all(dev);
2013 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
2020 enc_resp->crtc_id = encoder->crtc->base.id;
2022 enc_resp->crtc_id = 0;
2023 enc_resp->encoder_type = encoder->encoder_type;
2024 enc_resp->encoder_id = encoder->base.id;
2025 enc_resp->possible_crtcs = encoder->possible_crtcs;
2026 enc_resp->possible_clones = encoder->possible_clones;
2029 drm_modeset_unlock_all(dev);
2034 * drm_mode_getplane_res - enumerate all plane resources
2037 * @file_priv: DRM file info
2039 * Construct a list of plane ids to return to the user.
2041 * Called by the user via ioctl.
2044 * Zero on success, errno on failure.
2046 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2047 struct drm_file *file_priv)
2049 struct drm_mode_get_plane_res *plane_resp = data;
2050 struct drm_mode_config *config;
2051 struct drm_plane *plane;
2052 uint32_t __user *plane_ptr;
2053 int copied = 0, ret = 0;
2054 unsigned num_planes;
2056 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2059 drm_modeset_lock_all(dev);
2060 config = &dev->mode_config;
2062 if (file_priv->universal_planes)
2063 num_planes = config->num_total_plane;
2065 num_planes = config->num_overlay_plane;
2068 * This ioctl is called twice, once to determine how much space is
2069 * needed, and the 2nd time to fill it.
2072 (plane_resp->count_planes >= num_planes)) {
2073 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2075 list_for_each_entry(plane, &config->plane_list, head) {
2077 * Unless userspace set the 'universal planes'
2078 * capability bit, only advertise overlays.
2080 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2081 !file_priv->universal_planes)
2084 if (put_user(plane->base.id, plane_ptr + copied)) {
2091 plane_resp->count_planes = num_planes;
2094 drm_modeset_unlock_all(dev);
2099 * drm_mode_getplane - get plane configuration
2102 * @file_priv: DRM file info
2104 * Construct a plane configuration structure to return to the user.
2106 * Called by the user via ioctl.
2109 * Zero on success, errno on failure.
2111 int drm_mode_getplane(struct drm_device *dev, void *data,
2112 struct drm_file *file_priv)
2114 struct drm_mode_get_plane *plane_resp = data;
2115 struct drm_plane *plane;
2116 uint32_t __user *format_ptr;
2119 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2122 drm_modeset_lock_all(dev);
2123 plane = drm_plane_find(dev, plane_resp->plane_id);
2130 plane_resp->crtc_id = plane->crtc->base.id;
2132 plane_resp->crtc_id = 0;
2135 plane_resp->fb_id = plane->fb->base.id;
2137 plane_resp->fb_id = 0;
2139 plane_resp->plane_id = plane->base.id;
2140 plane_resp->possible_crtcs = plane->possible_crtcs;
2141 plane_resp->gamma_size = 0;
2144 * This ioctl is called twice, once to determine how much space is
2145 * needed, and the 2nd time to fill it.
2147 if (plane->format_count &&
2148 (plane_resp->count_format_types >= plane->format_count)) {
2149 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2150 if (copy_to_user(format_ptr,
2151 plane->format_types,
2152 sizeof(uint32_t) * plane->format_count)) {
2157 plane_resp->count_format_types = plane->format_count;
2160 drm_modeset_unlock_all(dev);
2165 * drm_mode_setplane - configure a plane's configuration
2167 * @data: ioctl data*
2168 * @file_priv: DRM file info
2170 * Set plane configuration, including placement, fb, scaling, and other factors.
2171 * Or pass a NULL fb to disable.
2174 * Zero on success, errno on failure.
2176 int drm_mode_setplane(struct drm_device *dev, void *data,
2177 struct drm_file *file_priv)
2179 struct drm_mode_set_plane *plane_req = data;
2180 struct drm_plane *plane;
2181 struct drm_crtc *crtc;
2182 struct drm_framebuffer *fb = NULL, *old_fb = NULL;
2184 unsigned int fb_width, fb_height;
2187 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2191 * First, find the plane, crtc, and fb objects. If not available,
2192 * we don't bother to call the driver.
2194 plane = drm_plane_find(dev, plane_req->plane_id);
2196 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2197 plane_req->plane_id);
2201 /* No fb means shut it down */
2202 if (!plane_req->fb_id) {
2203 drm_modeset_lock_all(dev);
2205 ret = plane->funcs->disable_plane(plane);
2212 drm_modeset_unlock_all(dev);
2216 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2218 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2219 plane_req->crtc_id);
2224 /* Check whether this plane is usable on this CRTC */
2225 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2226 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2231 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2233 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2239 /* Check whether this plane supports the fb pixel format. */
2240 for (i = 0; i < plane->format_count; i++)
2241 if (fb->pixel_format == plane->format_types[i])
2243 if (i == plane->format_count) {
2244 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2245 drm_get_format_name(fb->pixel_format));
2250 fb_width = fb->width << 16;
2251 fb_height = fb->height << 16;
2253 /* Make sure source coordinates are inside the fb. */
2254 if (plane_req->src_w > fb_width ||
2255 plane_req->src_x > fb_width - plane_req->src_w ||
2256 plane_req->src_h > fb_height ||
2257 plane_req->src_y > fb_height - plane_req->src_h) {
2258 DRM_DEBUG_KMS("Invalid source coordinates "
2259 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2260 plane_req->src_w >> 16,
2261 ((plane_req->src_w & 0xffff) * 15625) >> 10,
2262 plane_req->src_h >> 16,
2263 ((plane_req->src_h & 0xffff) * 15625) >> 10,
2264 plane_req->src_x >> 16,
2265 ((plane_req->src_x & 0xffff) * 15625) >> 10,
2266 plane_req->src_y >> 16,
2267 ((plane_req->src_y & 0xffff) * 15625) >> 10);
2272 /* Give drivers some help against integer overflows */
2273 if (plane_req->crtc_w > INT_MAX ||
2274 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2275 plane_req->crtc_h > INT_MAX ||
2276 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2277 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2278 plane_req->crtc_w, plane_req->crtc_h,
2279 plane_req->crtc_x, plane_req->crtc_y);
2284 drm_modeset_lock_all(dev);
2286 ret = plane->funcs->update_plane(plane, crtc, fb,
2287 plane_req->crtc_x, plane_req->crtc_y,
2288 plane_req->crtc_w, plane_req->crtc_h,
2289 plane_req->src_x, plane_req->src_y,
2290 plane_req->src_w, plane_req->src_h);
2298 drm_modeset_unlock_all(dev);
2302 drm_framebuffer_unreference(fb);
2304 drm_framebuffer_unreference(old_fb);
2310 * drm_mode_set_config_internal - helper to call ->set_config
2311 * @set: modeset config to set
2313 * This is a little helper to wrap internal calls to the ->set_config driver
2314 * interface. The only thing it adds is correct refcounting dance.
2317 * Zero on success, errno on failure.
2319 int drm_mode_set_config_internal(struct drm_mode_set *set)
2321 struct drm_crtc *crtc = set->crtc;
2322 struct drm_framebuffer *fb;
2323 struct drm_crtc *tmp;
2327 * NOTE: ->set_config can also disable other crtcs (if we steal all
2328 * connectors from it), hence we need to refcount the fbs across all
2329 * crtcs. Atomic modeset will have saner semantics ...
2331 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
2332 tmp->old_fb = tmp->primary->fb;
2336 ret = crtc->funcs->set_config(set);
2338 crtc->primary->crtc = crtc;
2339 crtc->primary->fb = fb;
2342 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
2343 if (tmp->primary->fb)
2344 drm_framebuffer_reference(tmp->primary->fb);
2346 drm_framebuffer_unreference(tmp->old_fb);
2351 EXPORT_SYMBOL(drm_mode_set_config_internal);
2354 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2356 * @crtc: CRTC that framebuffer will be displayed on
2359 * @mode: mode that framebuffer will be displayed under
2360 * @fb: framebuffer to check size of
2362 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2364 const struct drm_display_mode *mode,
2365 const struct drm_framebuffer *fb)
2368 int hdisplay, vdisplay;
2370 hdisplay = mode->hdisplay;
2371 vdisplay = mode->vdisplay;
2373 if (drm_mode_is_stereo(mode)) {
2374 struct drm_display_mode adjusted = *mode;
2376 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE);
2377 hdisplay = adjusted.crtc_hdisplay;
2378 vdisplay = adjusted.crtc_vdisplay;
2381 if (crtc->invert_dimensions)
2382 swap(hdisplay, vdisplay);
2384 if (hdisplay > fb->width ||
2385 vdisplay > fb->height ||
2386 x > fb->width - hdisplay ||
2387 y > fb->height - vdisplay) {
2388 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2389 fb->width, fb->height, hdisplay, vdisplay, x, y,
2390 crtc->invert_dimensions ? " (inverted)" : "");
2396 EXPORT_SYMBOL(drm_crtc_check_viewport);
2399 * drm_mode_setcrtc - set CRTC configuration
2400 * @dev: drm device for the ioctl
2401 * @data: data pointer for the ioctl
2402 * @file_priv: drm file for the ioctl call
2404 * Build a new CRTC configuration based on user request.
2406 * Called by the user via ioctl.
2409 * Zero on success, errno on failure.
2411 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2412 struct drm_file *file_priv)
2414 struct drm_mode_config *config = &dev->mode_config;
2415 struct drm_mode_crtc *crtc_req = data;
2416 struct drm_crtc *crtc;
2417 struct drm_connector **connector_set = NULL, *connector;
2418 struct drm_framebuffer *fb = NULL;
2419 struct drm_display_mode *mode = NULL;
2420 struct drm_mode_set set;
2421 uint32_t __user *set_connectors_ptr;
2425 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2428 /* For some reason crtc x/y offsets are signed internally. */
2429 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2432 drm_modeset_lock_all(dev);
2433 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2435 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2439 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2441 if (crtc_req->mode_valid) {
2442 /* If we have a mode we need a framebuffer. */
2443 /* If we pass -1, set the mode with the currently bound fb */
2444 if (crtc_req->fb_id == -1) {
2445 if (!crtc->primary->fb) {
2446 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2450 fb = crtc->primary->fb;
2451 /* Make refcounting symmetric with the lookup path. */
2452 drm_framebuffer_reference(fb);
2454 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2456 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2463 mode = drm_mode_create(dev);
2469 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2471 DRM_DEBUG_KMS("Invalid mode\n");
2475 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2477 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2484 if (crtc_req->count_connectors == 0 && mode) {
2485 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2490 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2491 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2492 crtc_req->count_connectors);
2497 if (crtc_req->count_connectors > 0) {
2500 /* Avoid unbounded kernel memory allocation */
2501 if (crtc_req->count_connectors > config->num_connector) {
2506 connector_set = kmalloc(crtc_req->count_connectors *
2507 sizeof(struct drm_connector *),
2509 if (!connector_set) {
2514 for (i = 0; i < crtc_req->count_connectors; i++) {
2515 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2516 if (get_user(out_id, &set_connectors_ptr[i])) {
2521 connector = drm_connector_find(dev, out_id);
2523 DRM_DEBUG_KMS("Connector id %d unknown\n",
2528 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2532 connector_set[i] = connector;
2537 set.x = crtc_req->x;
2538 set.y = crtc_req->y;
2540 set.connectors = connector_set;
2541 set.num_connectors = crtc_req->count_connectors;
2543 ret = drm_mode_set_config_internal(&set);
2547 drm_framebuffer_unreference(fb);
2549 kfree(connector_set);
2550 drm_mode_destroy(dev, mode);
2551 drm_modeset_unlock_all(dev);
2555 static int drm_mode_cursor_common(struct drm_device *dev,
2556 struct drm_mode_cursor2 *req,
2557 struct drm_file *file_priv)
2559 struct drm_crtc *crtc;
2562 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2565 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2568 crtc = drm_crtc_find(dev, req->crtc_id);
2570 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2574 drm_modeset_lock(&crtc->mutex, NULL);
2575 if (req->flags & DRM_MODE_CURSOR_BO) {
2576 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
2580 /* Turns off the cursor if handle is 0 */
2581 if (crtc->funcs->cursor_set2)
2582 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2583 req->width, req->height, req->hot_x, req->hot_y);
2585 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2586 req->width, req->height);
2589 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2590 if (crtc->funcs->cursor_move) {
2591 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2598 drm_modeset_unlock(&crtc->mutex);
2606 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2607 * @dev: drm device for the ioctl
2608 * @data: data pointer for the ioctl
2609 * @file_priv: drm file for the ioctl call
2611 * Set the cursor configuration based on user request.
2613 * Called by the user via ioctl.
2616 * Zero on success, errno on failure.
2618 int drm_mode_cursor_ioctl(struct drm_device *dev,
2619 void *data, struct drm_file *file_priv)
2621 struct drm_mode_cursor *req = data;
2622 struct drm_mode_cursor2 new_req;
2624 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2625 new_req.hot_x = new_req.hot_y = 0;
2627 return drm_mode_cursor_common(dev, &new_req, file_priv);
2631 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2632 * @dev: drm device for the ioctl
2633 * @data: data pointer for the ioctl
2634 * @file_priv: drm file for the ioctl call
2636 * Set the cursor configuration based on user request. This implements the 2nd
2637 * version of the cursor ioctl, which allows userspace to additionally specify
2638 * the hotspot of the pointer.
2640 * Called by the user via ioctl.
2643 * Zero on success, errno on failure.
2645 int drm_mode_cursor2_ioctl(struct drm_device *dev,
2646 void *data, struct drm_file *file_priv)
2648 struct drm_mode_cursor2 *req = data;
2649 return drm_mode_cursor_common(dev, req, file_priv);
2653 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2654 * @bpp: bits per pixels
2655 * @depth: bit depth per pixel
2657 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2658 * Useful in fbdev emulation code, since that deals in those values.
2660 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2666 fmt = DRM_FORMAT_C8;
2670 fmt = DRM_FORMAT_XRGB1555;
2672 fmt = DRM_FORMAT_RGB565;
2675 fmt = DRM_FORMAT_RGB888;
2679 fmt = DRM_FORMAT_XRGB8888;
2680 else if (depth == 30)
2681 fmt = DRM_FORMAT_XRGB2101010;
2683 fmt = DRM_FORMAT_ARGB8888;
2686 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2687 fmt = DRM_FORMAT_XRGB8888;
2693 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
2696 * drm_mode_addfb - add an FB to the graphics configuration
2697 * @dev: drm device for the ioctl
2698 * @data: data pointer for the ioctl
2699 * @file_priv: drm file for the ioctl call
2701 * Add a new FB to the specified CRTC, given a user request. This is the
2702 * original addfb ioclt which only supported RGB formats.
2704 * Called by the user via ioctl.
2707 * Zero on success, errno on failure.
2709 int drm_mode_addfb(struct drm_device *dev,
2710 void *data, struct drm_file *file_priv)
2712 struct drm_mode_fb_cmd *or = data;
2713 struct drm_mode_fb_cmd2 r = {};
2714 struct drm_mode_config *config = &dev->mode_config;
2715 struct drm_framebuffer *fb;
2718 /* Use new struct with format internally */
2719 r.fb_id = or->fb_id;
2720 r.width = or->width;
2721 r.height = or->height;
2722 r.pitches[0] = or->pitch;
2723 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
2724 r.handles[0] = or->handle;
2726 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2729 if ((config->min_width > r.width) || (r.width > config->max_width))
2732 if ((config->min_height > r.height) || (r.height > config->max_height))
2735 fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r);
2737 DRM_DEBUG_KMS("could not create framebuffer\n");
2741 mutex_lock(&file_priv->fbs_lock);
2742 or->fb_id = fb->base.id;
2743 list_add(&fb->filp_head, &file_priv->fbs);
2744 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2745 mutex_unlock(&file_priv->fbs_lock);
2750 static int format_check(const struct drm_mode_fb_cmd2 *r)
2752 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
2756 case DRM_FORMAT_RGB332:
2757 case DRM_FORMAT_BGR233:
2758 case DRM_FORMAT_XRGB4444:
2759 case DRM_FORMAT_XBGR4444:
2760 case DRM_FORMAT_RGBX4444:
2761 case DRM_FORMAT_BGRX4444:
2762 case DRM_FORMAT_ARGB4444:
2763 case DRM_FORMAT_ABGR4444:
2764 case DRM_FORMAT_RGBA4444:
2765 case DRM_FORMAT_BGRA4444:
2766 case DRM_FORMAT_XRGB1555:
2767 case DRM_FORMAT_XBGR1555:
2768 case DRM_FORMAT_RGBX5551:
2769 case DRM_FORMAT_BGRX5551:
2770 case DRM_FORMAT_ARGB1555:
2771 case DRM_FORMAT_ABGR1555:
2772 case DRM_FORMAT_RGBA5551:
2773 case DRM_FORMAT_BGRA5551:
2774 case DRM_FORMAT_RGB565:
2775 case DRM_FORMAT_BGR565:
2776 case DRM_FORMAT_RGB888:
2777 case DRM_FORMAT_BGR888:
2778 case DRM_FORMAT_XRGB8888:
2779 case DRM_FORMAT_XBGR8888:
2780 case DRM_FORMAT_RGBX8888:
2781 case DRM_FORMAT_BGRX8888:
2782 case DRM_FORMAT_ARGB8888:
2783 case DRM_FORMAT_ABGR8888:
2784 case DRM_FORMAT_RGBA8888:
2785 case DRM_FORMAT_BGRA8888:
2786 case DRM_FORMAT_XRGB2101010:
2787 case DRM_FORMAT_XBGR2101010:
2788 case DRM_FORMAT_RGBX1010102:
2789 case DRM_FORMAT_BGRX1010102:
2790 case DRM_FORMAT_ARGB2101010:
2791 case DRM_FORMAT_ABGR2101010:
2792 case DRM_FORMAT_RGBA1010102:
2793 case DRM_FORMAT_BGRA1010102:
2794 case DRM_FORMAT_YUYV:
2795 case DRM_FORMAT_YVYU:
2796 case DRM_FORMAT_UYVY:
2797 case DRM_FORMAT_VYUY:
2798 case DRM_FORMAT_AYUV:
2799 case DRM_FORMAT_NV12:
2800 case DRM_FORMAT_NV21:
2801 case DRM_FORMAT_NV16:
2802 case DRM_FORMAT_NV61:
2803 case DRM_FORMAT_NV24:
2804 case DRM_FORMAT_NV42:
2805 case DRM_FORMAT_YUV410:
2806 case DRM_FORMAT_YVU410:
2807 case DRM_FORMAT_YUV411:
2808 case DRM_FORMAT_YVU411:
2809 case DRM_FORMAT_YUV420:
2810 case DRM_FORMAT_YVU420:
2811 case DRM_FORMAT_YUV422:
2812 case DRM_FORMAT_YVU422:
2813 case DRM_FORMAT_YUV444:
2814 case DRM_FORMAT_YVU444:
2817 DRM_DEBUG_KMS("invalid pixel format %s\n",
2818 drm_get_format_name(r->pixel_format));
2823 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
2825 int ret, hsub, vsub, num_planes, i;
2827 ret = format_check(r);
2829 DRM_DEBUG_KMS("bad framebuffer format %s\n",
2830 drm_get_format_name(r->pixel_format));
2834 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
2835 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
2836 num_planes = drm_format_num_planes(r->pixel_format);
2838 if (r->width == 0 || r->width % hsub) {
2839 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->height);
2843 if (r->height == 0 || r->height % vsub) {
2844 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
2848 for (i = 0; i < num_planes; i++) {
2849 unsigned int width = r->width / (i != 0 ? hsub : 1);
2850 unsigned int height = r->height / (i != 0 ? vsub : 1);
2851 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
2853 if (!r->handles[i]) {
2854 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
2858 if ((uint64_t) width * cpp > UINT_MAX)
2861 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
2864 if (r->pitches[i] < width * cpp) {
2865 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
2874 * drm_mode_addfb2 - add an FB to the graphics configuration
2875 * @dev: drm device for the ioctl
2876 * @data: data pointer for the ioctl
2877 * @file_priv: drm file for the ioctl call
2879 * Add a new FB to the specified CRTC, given a user request with format. This is
2880 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
2881 * and uses fourcc codes as pixel format specifiers.
2883 * Called by the user via ioctl.
2886 * Zero on success, errno on failure.
2888 int drm_mode_addfb2(struct drm_device *dev,
2889 void *data, struct drm_file *file_priv)
2891 struct drm_mode_fb_cmd2 *r = data;
2892 struct drm_mode_config *config = &dev->mode_config;
2893 struct drm_framebuffer *fb;
2896 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2899 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
2900 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
2904 if ((config->min_width > r->width) || (r->width > config->max_width)) {
2905 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
2906 r->width, config->min_width, config->max_width);
2909 if ((config->min_height > r->height) || (r->height > config->max_height)) {
2910 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
2911 r->height, config->min_height, config->max_height);
2915 ret = framebuffer_check(r);
2919 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
2921 DRM_DEBUG_KMS("could not create framebuffer\n");
2925 mutex_lock(&file_priv->fbs_lock);
2926 r->fb_id = fb->base.id;
2927 list_add(&fb->filp_head, &file_priv->fbs);
2928 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2929 mutex_unlock(&file_priv->fbs_lock);
2936 * drm_mode_rmfb - remove an FB from the configuration
2937 * @dev: drm device for the ioctl
2938 * @data: data pointer for the ioctl
2939 * @file_priv: drm file for the ioctl call
2941 * Remove the FB specified by the user.
2943 * Called by the user via ioctl.
2946 * Zero on success, errno on failure.
2948 int drm_mode_rmfb(struct drm_device *dev,
2949 void *data, struct drm_file *file_priv)
2951 struct drm_framebuffer *fb = NULL;
2952 struct drm_framebuffer *fbl = NULL;
2953 uint32_t *id = data;
2956 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2959 mutex_lock(&file_priv->fbs_lock);
2960 mutex_lock(&dev->mode_config.fb_lock);
2961 fb = __drm_framebuffer_lookup(dev, *id);
2965 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
2971 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
2972 __drm_framebuffer_unregister(dev, fb);
2974 list_del_init(&fb->filp_head);
2975 mutex_unlock(&dev->mode_config.fb_lock);
2976 mutex_unlock(&file_priv->fbs_lock);
2978 drm_framebuffer_remove(fb);
2983 mutex_unlock(&dev->mode_config.fb_lock);
2984 mutex_unlock(&file_priv->fbs_lock);
2990 * drm_mode_getfb - get FB info
2991 * @dev: drm device for the ioctl
2992 * @data: data pointer for the ioctl
2993 * @file_priv: drm file for the ioctl call
2995 * Lookup the FB given its ID and return info about it.
2997 * Called by the user via ioctl.
3000 * Zero on success, errno on failure.
3002 int drm_mode_getfb(struct drm_device *dev,
3003 void *data, struct drm_file *file_priv)
3005 struct drm_mode_fb_cmd *r = data;
3006 struct drm_framebuffer *fb;
3009 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3012 fb = drm_framebuffer_lookup(dev, r->fb_id);
3016 r->height = fb->height;
3017 r->width = fb->width;
3018 r->depth = fb->depth;
3019 r->bpp = fb->bits_per_pixel;
3020 r->pitch = fb->pitches[0];
3021 if (fb->funcs->create_handle) {
3022 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
3023 drm_is_control_client(file_priv)) {
3024 ret = fb->funcs->create_handle(fb, file_priv,
3027 /* GET_FB() is an unprivileged ioctl so we must not
3028 * return a buffer-handle to non-master processes! For
3029 * backwards-compatibility reasons, we cannot make
3030 * GET_FB() privileged, so just return an invalid handle
3031 * for non-masters. */
3039 drm_framebuffer_unreference(fb);
3045 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3046 * @dev: drm device for the ioctl
3047 * @data: data pointer for the ioctl
3048 * @file_priv: drm file for the ioctl call
3050 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3051 * rectangle list. Generic userspace which does frontbuffer rendering must call
3052 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3053 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3055 * Modesetting drivers which always update the frontbuffer do not need to
3056 * implement the corresponding ->dirty framebuffer callback.
3058 * Called by the user via ioctl.
3061 * Zero on success, errno on failure.
3063 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3064 void *data, struct drm_file *file_priv)
3066 struct drm_clip_rect __user *clips_ptr;
3067 struct drm_clip_rect *clips = NULL;
3068 struct drm_mode_fb_dirty_cmd *r = data;
3069 struct drm_framebuffer *fb;
3074 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3077 fb = drm_framebuffer_lookup(dev, r->fb_id);
3081 num_clips = r->num_clips;
3082 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3084 if (!num_clips != !clips_ptr) {
3089 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3091 /* If userspace annotates copy, clips must come in pairs */
3092 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3097 if (num_clips && clips_ptr) {
3098 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3102 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
3108 ret = copy_from_user(clips, clips_ptr,
3109 num_clips * sizeof(*clips));
3116 if (fb->funcs->dirty) {
3117 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3126 drm_framebuffer_unreference(fb);
3133 * drm_fb_release - remove and free the FBs on this file
3134 * @priv: drm file for the ioctl
3136 * Destroy all the FBs associated with @filp.
3138 * Called by the user via ioctl.
3141 * Zero on success, errno on failure.
3143 void drm_fb_release(struct drm_file *priv)
3145 struct drm_device *dev = priv->minor->dev;
3146 struct drm_framebuffer *fb, *tfb;
3148 mutex_lock(&priv->fbs_lock);
3149 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3151 mutex_lock(&dev->mode_config.fb_lock);
3152 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3153 __drm_framebuffer_unregister(dev, fb);
3154 mutex_unlock(&dev->mode_config.fb_lock);
3156 list_del_init(&fb->filp_head);
3158 /* This will also drop the fpriv->fbs reference. */
3159 drm_framebuffer_remove(fb);
3161 mutex_unlock(&priv->fbs_lock);
3165 * drm_property_create - create a new property type
3167 * @flags: flags specifying the property type
3168 * @name: name of the property
3169 * @num_values: number of pre-defined values
3171 * This creates a new generic drm property which can then be attached to a drm
3172 * object with drm_object_attach_property. The returned property object must be
3173 * freed with drm_property_destroy.
3176 * A pointer to the newly created property on success, NULL on failure.
3178 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3179 const char *name, int num_values)
3181 struct drm_property *property = NULL;
3184 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3188 property->dev = dev;
3191 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
3192 if (!property->values)
3196 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3200 property->flags = flags;
3201 property->num_values = num_values;
3202 INIT_LIST_HEAD(&property->enum_blob_list);
3205 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3206 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3209 list_add_tail(&property->head, &dev->mode_config.property_list);
3211 WARN_ON(!drm_property_type_valid(property));
3215 kfree(property->values);
3219 EXPORT_SYMBOL(drm_property_create);
3222 * drm_property_create - create a new enumeration property type
3224 * @flags: flags specifying the property type
3225 * @name: name of the property
3226 * @props: enumeration lists with property values
3227 * @num_values: number of pre-defined values
3229 * This creates a new generic drm property which can then be attached to a drm
3230 * object with drm_object_attach_property. The returned property object must be
3231 * freed with drm_property_destroy.
3233 * Userspace is only allowed to set one of the predefined values for enumeration
3237 * A pointer to the newly created property on success, NULL on failure.
3239 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3241 const struct drm_prop_enum_list *props,
3244 struct drm_property *property;
3247 flags |= DRM_MODE_PROP_ENUM;
3249 property = drm_property_create(dev, flags, name, num_values);
3253 for (i = 0; i < num_values; i++) {
3254 ret = drm_property_add_enum(property, i,
3258 drm_property_destroy(dev, property);
3265 EXPORT_SYMBOL(drm_property_create_enum);
3268 * drm_property_create - create a new bitmask property type
3270 * @flags: flags specifying the property type
3271 * @name: name of the property
3272 * @props: enumeration lists with property bitflags
3273 * @num_values: number of pre-defined values
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 * Compared to plain enumeration properties userspace is allowed to set any
3280 * or'ed together combination of the predefined property bitflag values
3283 * A pointer to the newly created property on success, NULL on failure.
3285 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3286 int flags, const char *name,
3287 const struct drm_prop_enum_list *props,
3290 struct drm_property *property;
3293 flags |= DRM_MODE_PROP_BITMASK;
3295 property = drm_property_create(dev, flags, name, num_values);
3299 for (i = 0; i < num_values; i++) {
3300 ret = drm_property_add_enum(property, i,
3304 drm_property_destroy(dev, property);
3311 EXPORT_SYMBOL(drm_property_create_bitmask);
3313 static struct drm_property *property_create_range(struct drm_device *dev,
3314 int flags, const char *name,
3315 uint64_t min, uint64_t max)
3317 struct drm_property *property;
3319 property = drm_property_create(dev, flags, name, 2);
3323 property->values[0] = min;
3324 property->values[1] = max;
3330 * drm_property_create - create a new ranged property type
3332 * @flags: flags specifying the property type
3333 * @name: name of the property
3334 * @min: minimum value of the property
3335 * @max: maximum value of the property
3337 * This creates a new generic drm property which can then be attached to a drm
3338 * object with drm_object_attach_property. The returned property object must be
3339 * freed with drm_property_destroy.
3341 * Userspace is allowed to set any interger value in the (min, max) range
3345 * A pointer to the newly created property on success, NULL on failure.
3347 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3349 uint64_t min, uint64_t max)
3351 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3354 EXPORT_SYMBOL(drm_property_create_range);
3356 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3357 int flags, const char *name,
3358 int64_t min, int64_t max)
3360 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3361 name, I642U64(min), I642U64(max));
3363 EXPORT_SYMBOL(drm_property_create_signed_range);
3365 struct drm_property *drm_property_create_object(struct drm_device *dev,
3366 int flags, const char *name, uint32_t type)
3368 struct drm_property *property;
3370 flags |= DRM_MODE_PROP_OBJECT;
3372 property = drm_property_create(dev, flags, name, 1);
3376 property->values[0] = type;
3380 EXPORT_SYMBOL(drm_property_create_object);
3383 * drm_property_add_enum - add a possible value to an enumeration property
3384 * @property: enumeration property to change
3385 * @index: index of the new enumeration
3386 * @value: value of the new enumeration
3387 * @name: symbolic name of the new enumeration
3389 * This functions adds enumerations to a property.
3391 * It's use is deprecated, drivers should use one of the more specific helpers
3392 * to directly create the property with all enumerations already attached.
3395 * Zero on success, error code on failure.
3397 int drm_property_add_enum(struct drm_property *property, int index,
3398 uint64_t value, const char *name)
3400 struct drm_property_enum *prop_enum;
3402 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3403 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
3407 * Bitmask enum properties have the additional constraint of values
3410 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3414 if (!list_empty(&property->enum_blob_list)) {
3415 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3416 if (prop_enum->value == value) {
3417 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3418 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3424 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3428 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3429 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3430 prop_enum->value = value;
3432 property->values[index] = value;
3433 list_add_tail(&prop_enum->head, &property->enum_blob_list);
3436 EXPORT_SYMBOL(drm_property_add_enum);
3439 * drm_property_destroy - destroy a drm property
3441 * @property: property to destry
3443 * This function frees a property including any attached resources like
3444 * enumeration values.
3446 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3448 struct drm_property_enum *prop_enum, *pt;
3450 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
3451 list_del(&prop_enum->head);
3455 if (property->num_values)
3456 kfree(property->values);
3457 drm_mode_object_put(dev, &property->base);
3458 list_del(&property->head);
3461 EXPORT_SYMBOL(drm_property_destroy);
3464 * drm_object_attach_property - attach a property to a modeset object
3465 * @obj: drm modeset object
3466 * @property: property to attach
3467 * @init_val: initial value of the property
3469 * This attaches the given property to the modeset object with the given initial
3470 * value. Currently this function cannot fail since the properties are stored in
3471 * a statically sized array.
3473 void drm_object_attach_property(struct drm_mode_object *obj,
3474 struct drm_property *property,
3477 int count = obj->properties->count;
3479 if (count == DRM_OBJECT_MAX_PROPERTY) {
3480 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3481 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3482 "you see this message on the same object type.\n",
3487 obj->properties->ids[count] = property->base.id;
3488 obj->properties->values[count] = init_val;
3489 obj->properties->count++;
3491 EXPORT_SYMBOL(drm_object_attach_property);
3494 * drm_object_property_set_value - set the value of a property
3495 * @obj: drm mode object to set property value for
3496 * @property: property to set
3497 * @val: value the property should be set to
3499 * This functions sets a given property on a given object. This function only
3500 * changes the software state of the property, it does not call into the
3501 * driver's ->set_property callback.
3504 * Zero on success, error code on failure.
3506 int drm_object_property_set_value(struct drm_mode_object *obj,
3507 struct drm_property *property, uint64_t val)
3511 for (i = 0; i < obj->properties->count; i++) {
3512 if (obj->properties->ids[i] == property->base.id) {
3513 obj->properties->values[i] = val;
3520 EXPORT_SYMBOL(drm_object_property_set_value);
3523 * drm_object_property_get_value - retrieve the value of a property
3524 * @obj: drm mode object to get property value from
3525 * @property: property to retrieve
3526 * @val: storage for the property value
3528 * This function retrieves the softare state of the given property for the given
3529 * property. Since there is no driver callback to retrieve the current property
3530 * value this might be out of sync with the hardware, depending upon the driver
3534 * Zero on success, error code on failure.
3536 int drm_object_property_get_value(struct drm_mode_object *obj,
3537 struct drm_property *property, uint64_t *val)
3541 for (i = 0; i < obj->properties->count; i++) {
3542 if (obj->properties->ids[i] == property->base.id) {
3543 *val = obj->properties->values[i];
3550 EXPORT_SYMBOL(drm_object_property_get_value);
3553 * drm_mode_getproperty_ioctl - get the current value of a connector's property
3556 * @file_priv: DRM file info
3558 * This function retrieves the current value for an connectors's property.
3560 * Called by the user via ioctl.
3563 * Zero on success, errno on failure.
3565 int drm_mode_getproperty_ioctl(struct drm_device *dev,
3566 void *data, struct drm_file *file_priv)
3568 struct drm_mode_get_property *out_resp = data;
3569 struct drm_property *property;
3572 int value_count = 0;
3575 struct drm_property_enum *prop_enum;
3576 struct drm_mode_property_enum __user *enum_ptr;
3577 struct drm_property_blob *prop_blob;
3578 uint32_t __user *blob_id_ptr;
3579 uint64_t __user *values_ptr;
3580 uint32_t __user *blob_length_ptr;
3582 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3585 drm_modeset_lock_all(dev);
3586 property = drm_property_find(dev, out_resp->prop_id);
3592 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3593 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3594 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
3596 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
3597 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
3601 value_count = property->num_values;
3603 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
3604 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
3605 out_resp->flags = property->flags;
3607 if ((out_resp->count_values >= value_count) && value_count) {
3608 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
3609 for (i = 0; i < value_count; i++) {
3610 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
3616 out_resp->count_values = value_count;
3618 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3619 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3620 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
3622 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3623 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3625 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
3630 if (copy_to_user(&enum_ptr[copied].name,
3631 &prop_enum->name, DRM_PROP_NAME_LEN)) {
3638 out_resp->count_enum_blobs = enum_count;
3641 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
3642 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
3644 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr;
3645 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr;
3647 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
3648 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
3653 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
3661 out_resp->count_enum_blobs = blob_count;
3664 drm_modeset_unlock_all(dev);
3668 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
3671 struct drm_property_blob *blob;
3674 if (!length || !data)
3677 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
3681 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
3687 blob->length = length;
3689 memcpy(blob->data, data, length);
3691 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
3695 static void drm_property_destroy_blob(struct drm_device *dev,
3696 struct drm_property_blob *blob)
3698 drm_mode_object_put(dev, &blob->base);
3699 list_del(&blob->head);
3704 * drm_mode_getblob_ioctl - get the contents of a blob property value
3707 * @file_priv: DRM file info
3709 * This function retrieves the contents of a blob property. The value stored in
3710 * an object's blob property is just a normal modeset object id.
3712 * Called by the user via ioctl.
3715 * Zero on success, errno on failure.
3717 int drm_mode_getblob_ioctl(struct drm_device *dev,
3718 void *data, struct drm_file *file_priv)
3720 struct drm_mode_get_blob *out_resp = data;
3721 struct drm_property_blob *blob;
3723 void __user *blob_ptr;
3725 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3728 drm_modeset_lock_all(dev);
3729 blob = drm_property_blob_find(dev, out_resp->blob_id);
3735 if (out_resp->length == blob->length) {
3736 blob_ptr = (void __user *)(unsigned long)out_resp->data;
3737 if (copy_to_user(blob_ptr, blob->data, blob->length)){
3742 out_resp->length = blob->length;
3745 drm_modeset_unlock_all(dev);
3750 * drm_mode_connector_update_edid_property - update the edid property of a connector
3751 * @connector: drm connector
3752 * @edid: new value of the edid property
3754 * This function creates a new blob modeset object and assigns its id to the
3755 * connector's edid property.
3758 * Zero on success, errno on failure.
3760 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
3763 struct drm_device *dev = connector->dev;
3766 /* ignore requests to set edid when overridden */
3767 if (connector->override_edid)
3770 if (connector->edid_blob_ptr)
3771 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
3773 /* Delete edid, when there is none. */
3775 connector->edid_blob_ptr = NULL;
3776 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
3780 size = EDID_LENGTH * (1 + edid->extensions);
3781 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
3783 if (!connector->edid_blob_ptr)
3786 ret = drm_object_property_set_value(&connector->base,
3787 dev->mode_config.edid_property,
3788 connector->edid_blob_ptr->base.id);
3792 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
3794 static bool drm_property_change_is_valid(struct drm_property *property,
3797 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
3800 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
3801 if (value < property->values[0] || value > property->values[1])
3804 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
3805 int64_t svalue = U642I64(value);
3806 if (svalue < U642I64(property->values[0]) ||
3807 svalue > U642I64(property->values[1]))
3810 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3812 uint64_t valid_mask = 0;
3813 for (i = 0; i < property->num_values; i++)
3814 valid_mask |= (1ULL << property->values[i]);
3815 return !(value & ~valid_mask);
3816 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
3817 /* Only the driver knows */
3819 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
3820 struct drm_mode_object *obj;
3821 /* a zero value for an object property translates to null: */
3825 * NOTE: use _object_find() directly to bypass restriction on
3826 * looking up refcnt'd objects (ie. fb's). For a refcnt'd
3827 * object this could race against object finalization, so it
3828 * simply tells us that the object *was* valid. Which is good
3831 obj = _object_find(property->dev, value, property->values[0]);
3835 for (i = 0; i < property->num_values; i++)
3836 if (property->values[i] == value)
3843 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
3846 * @file_priv: DRM file info
3848 * This function sets the current value for a connectors's property. It also
3849 * calls into a driver's ->set_property callback to update the hardware state
3851 * Called by the user via ioctl.
3854 * Zero on success, errno on failure.
3856 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
3857 void *data, struct drm_file *file_priv)
3859 struct drm_mode_connector_set_property *conn_set_prop = data;
3860 struct drm_mode_obj_set_property obj_set_prop = {
3861 .value = conn_set_prop->value,
3862 .prop_id = conn_set_prop->prop_id,
3863 .obj_id = conn_set_prop->connector_id,
3864 .obj_type = DRM_MODE_OBJECT_CONNECTOR
3867 /* It does all the locking and checking we need */
3868 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
3871 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
3872 struct drm_property *property,
3876 struct drm_connector *connector = obj_to_connector(obj);
3878 /* Do DPMS ourselves */
3879 if (property == connector->dev->mode_config.dpms_property) {
3880 if (connector->funcs->dpms)
3881 (*connector->funcs->dpms)(connector, (int)value);
3883 } else if (connector->funcs->set_property)
3884 ret = connector->funcs->set_property(connector, property, value);
3886 /* store the property value if successful */
3888 drm_object_property_set_value(&connector->base, property, value);
3892 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
3893 struct drm_property *property,
3897 struct drm_crtc *crtc = obj_to_crtc(obj);
3899 if (crtc->funcs->set_property)
3900 ret = crtc->funcs->set_property(crtc, property, value);
3902 drm_object_property_set_value(obj, property, value);
3907 static int drm_mode_plane_set_obj_prop(struct drm_mode_object *obj,
3908 struct drm_property *property,
3912 struct drm_plane *plane = obj_to_plane(obj);
3914 if (plane->funcs->set_property)
3915 ret = plane->funcs->set_property(plane, property, value);
3917 drm_object_property_set_value(obj, property, value);
3923 * drm_mode_getproperty_ioctl - get the current value of a object's property
3926 * @file_priv: DRM file info
3928 * This function retrieves the current value for an object's property. Compared
3929 * to the connector specific ioctl this one is extended to also work on crtc and
3932 * Called by the user via ioctl.
3935 * Zero on success, errno on failure.
3937 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
3938 struct drm_file *file_priv)
3940 struct drm_mode_obj_get_properties *arg = data;
3941 struct drm_mode_object *obj;
3945 int props_count = 0;
3946 uint32_t __user *props_ptr;
3947 uint64_t __user *prop_values_ptr;
3949 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3952 drm_modeset_lock_all(dev);
3954 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
3959 if (!obj->properties) {
3964 props_count = obj->properties->count;
3966 /* This ioctl is called twice, once to determine how much space is
3967 * needed, and the 2nd time to fill it. */
3968 if ((arg->count_props >= props_count) && props_count) {
3970 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
3971 prop_values_ptr = (uint64_t __user *)(unsigned long)
3972 (arg->prop_values_ptr);
3973 for (i = 0; i < props_count; i++) {
3974 if (put_user(obj->properties->ids[i],
3975 props_ptr + copied)) {
3979 if (put_user(obj->properties->values[i],
3980 prop_values_ptr + copied)) {
3987 arg->count_props = props_count;
3989 drm_modeset_unlock_all(dev);
3994 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
3997 * @file_priv: DRM file info
3999 * This function sets the current value for an object's property. It also calls
4000 * into a driver's ->set_property callback to update the hardware state.
4001 * Compared to the connector specific ioctl this one is extended to also work on
4002 * crtc and plane objects.
4004 * Called by the user via ioctl.
4007 * Zero on success, errno on failure.
4009 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4010 struct drm_file *file_priv)
4012 struct drm_mode_obj_set_property *arg = data;
4013 struct drm_mode_object *arg_obj;
4014 struct drm_mode_object *prop_obj;
4015 struct drm_property *property;
4019 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4022 drm_modeset_lock_all(dev);
4024 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4029 if (!arg_obj->properties)
4032 for (i = 0; i < arg_obj->properties->count; i++)
4033 if (arg_obj->properties->ids[i] == arg->prop_id)
4036 if (i == arg_obj->properties->count)
4039 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4040 DRM_MODE_OBJECT_PROPERTY);
4045 property = obj_to_property(prop_obj);
4047 if (!drm_property_change_is_valid(property, arg->value))
4050 switch (arg_obj->type) {
4051 case DRM_MODE_OBJECT_CONNECTOR:
4052 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4055 case DRM_MODE_OBJECT_CRTC:
4056 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4058 case DRM_MODE_OBJECT_PLANE:
4059 ret = drm_mode_plane_set_obj_prop(arg_obj, property, arg->value);
4064 drm_modeset_unlock_all(dev);
4069 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4070 * @connector: connector to attach
4071 * @encoder: encoder to attach @connector to
4073 * This function links up a connector to an encoder. Note that the routing
4074 * restrictions between encoders and crtcs are exposed to userspace through the
4075 * possible_clones and possible_crtcs bitmasks.
4078 * Zero on success, errno on failure.
4080 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4081 struct drm_encoder *encoder)
4085 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4086 if (connector->encoder_ids[i] == 0) {
4087 connector->encoder_ids[i] = encoder->base.id;
4093 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4096 * drm_mode_crtc_set_gamma_size - set the gamma table size
4097 * @crtc: CRTC to set the gamma table size for
4098 * @gamma_size: size of the gamma table
4100 * Drivers which support gamma tables should set this to the supported gamma
4101 * table size when initializing the CRTC. Currently the drm core only supports a
4102 * fixed gamma table size.
4105 * Zero on success, errno on failure.
4107 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
4110 crtc->gamma_size = gamma_size;
4112 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
4113 if (!crtc->gamma_store) {
4114 crtc->gamma_size = 0;
4120 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
4123 * drm_mode_gamma_set_ioctl - set the gamma table
4126 * @file_priv: DRM file info
4128 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4129 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4131 * Called by the user via ioctl.
4134 * Zero on success, errno on failure.
4136 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
4137 void *data, struct drm_file *file_priv)
4139 struct drm_mode_crtc_lut *crtc_lut = data;
4140 struct drm_crtc *crtc;
4141 void *r_base, *g_base, *b_base;
4145 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4148 drm_modeset_lock_all(dev);
4149 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4155 if (crtc->funcs->gamma_set == NULL) {
4160 /* memcpy into gamma store */
4161 if (crtc_lut->gamma_size != crtc->gamma_size) {
4166 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4167 r_base = crtc->gamma_store;
4168 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4173 g_base = r_base + size;
4174 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4179 b_base = g_base + size;
4180 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4185 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
4188 drm_modeset_unlock_all(dev);
4194 * drm_mode_gamma_get_ioctl - get the gamma table
4197 * @file_priv: DRM file info
4199 * Copy the current gamma table into the storage provided. This also provides
4200 * the gamma table size the driver expects, which can be used to size the
4201 * allocated storage.
4203 * Called by the user via ioctl.
4206 * Zero on success, errno on failure.
4208 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4209 void *data, struct drm_file *file_priv)
4211 struct drm_mode_crtc_lut *crtc_lut = data;
4212 struct drm_crtc *crtc;
4213 void *r_base, *g_base, *b_base;
4217 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4220 drm_modeset_lock_all(dev);
4221 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4227 /* memcpy into gamma store */
4228 if (crtc_lut->gamma_size != crtc->gamma_size) {
4233 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4234 r_base = crtc->gamma_store;
4235 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4240 g_base = r_base + size;
4241 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4246 b_base = g_base + size;
4247 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4252 drm_modeset_unlock_all(dev);
4257 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4260 * @file_priv: DRM file info
4262 * This schedules an asynchronous update on a given CRTC, called page flip.
4263 * Optionally a drm event is generated to signal the completion of the event.
4264 * Generic drivers cannot assume that a pageflip with changed framebuffer
4265 * properties (including driver specific metadata like tiling layout) will work,
4266 * but some drivers support e.g. pixel format changes through the pageflip
4269 * Called by the user via ioctl.
4272 * Zero on success, errno on failure.
4274 int drm_mode_page_flip_ioctl(struct drm_device *dev,
4275 void *data, struct drm_file *file_priv)
4277 struct drm_mode_crtc_page_flip *page_flip = data;
4278 struct drm_crtc *crtc;
4279 struct drm_framebuffer *fb = NULL, *old_fb = NULL;
4280 struct drm_pending_vblank_event *e = NULL;
4281 unsigned long flags;
4284 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4285 page_flip->reserved != 0)
4288 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4291 crtc = drm_crtc_find(dev, page_flip->crtc_id);
4295 drm_modeset_lock(&crtc->mutex, NULL);
4296 if (crtc->primary->fb == NULL) {
4297 /* The framebuffer is currently unbound, presumably
4298 * due to a hotplug event, that userspace has not
4305 if (crtc->funcs->page_flip == NULL)
4308 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
4314 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4318 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
4319 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4324 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4326 spin_lock_irqsave(&dev->event_lock, flags);
4327 if (file_priv->event_space < sizeof e->event) {
4328 spin_unlock_irqrestore(&dev->event_lock, flags);
4331 file_priv->event_space -= sizeof e->event;
4332 spin_unlock_irqrestore(&dev->event_lock, flags);
4334 e = kzalloc(sizeof *e, GFP_KERNEL);
4336 spin_lock_irqsave(&dev->event_lock, flags);
4337 file_priv->event_space += sizeof e->event;
4338 spin_unlock_irqrestore(&dev->event_lock, flags);
4342 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
4343 e->event.base.length = sizeof e->event;
4344 e->event.user_data = page_flip->user_data;
4345 e->base.event = &e->event.base;
4346 e->base.file_priv = file_priv;
4348 (void (*) (struct drm_pending_event *)) kfree;
4351 old_fb = crtc->primary->fb;
4352 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
4354 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4355 spin_lock_irqsave(&dev->event_lock, flags);
4356 file_priv->event_space += sizeof e->event;
4357 spin_unlock_irqrestore(&dev->event_lock, flags);
4360 /* Keep the old fb, don't unref it. */
4364 * Warn if the driver hasn't properly updated the crtc->fb
4365 * field to reflect that the new framebuffer is now used.
4366 * Failing to do so will screw with the reference counting
4369 WARN_ON(crtc->primary->fb != fb);
4370 /* Unref only the old framebuffer. */
4376 drm_framebuffer_unreference(fb);
4378 drm_framebuffer_unreference(old_fb);
4379 drm_modeset_unlock(&crtc->mutex);
4385 * drm_mode_config_reset - call ->reset callbacks
4388 * This functions calls all the crtc's, encoder's and connector's ->reset
4389 * callback. Drivers can use this in e.g. their driver load or resume code to
4390 * reset hardware and software state.
4392 void drm_mode_config_reset(struct drm_device *dev)
4394 struct drm_crtc *crtc;
4395 struct drm_encoder *encoder;
4396 struct drm_connector *connector;
4398 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4399 if (crtc->funcs->reset)
4400 crtc->funcs->reset(crtc);
4402 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4403 if (encoder->funcs->reset)
4404 encoder->funcs->reset(encoder);
4406 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4407 connector->status = connector_status_unknown;
4409 if (connector->funcs->reset)
4410 connector->funcs->reset(connector);
4413 EXPORT_SYMBOL(drm_mode_config_reset);
4416 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4419 * @file_priv: DRM file info
4421 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4422 * TTM or something else entirely) and returns the resulting buffer handle. This
4423 * handle can then be wrapped up into a framebuffer modeset object.
4425 * Note that userspace is not allowed to use such objects for render
4426 * acceleration - drivers must create their own private ioctls for such a use
4429 * Called by the user via ioctl.
4432 * Zero on success, errno on failure.
4434 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
4435 void *data, struct drm_file *file_priv)
4437 struct drm_mode_create_dumb *args = data;
4438 u32 cpp, stride, size;
4440 if (!dev->driver->dumb_create)
4442 if (!args->width || !args->height || !args->bpp)
4445 /* overflow checks for 32bit size calculations */
4446 cpp = DIV_ROUND_UP(args->bpp, 8);
4447 if (cpp > 0xffffffffU / args->width)
4449 stride = cpp * args->width;
4450 if (args->height > 0xffffffffU / stride)
4453 /* test for wrap-around */
4454 size = args->height * stride;
4455 if (PAGE_ALIGN(size) == 0)
4458 return dev->driver->dumb_create(file_priv, dev, args);
4462 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4465 * @file_priv: DRM file info
4467 * Allocate an offset in the drm device node's address space to be able to
4468 * memory map a dumb buffer.
4470 * Called by the user via ioctl.
4473 * Zero on success, errno on failure.
4475 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
4476 void *data, struct drm_file *file_priv)
4478 struct drm_mode_map_dumb *args = data;
4480 /* call driver ioctl to get mmap offset */
4481 if (!dev->driver->dumb_map_offset)
4484 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
4488 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4491 * @file_priv: DRM file info
4493 * This destroys the userspace handle for the given dumb backing storage buffer.
4494 * Since buffer objects must be reference counted in the kernel a buffer object
4495 * won't be immediately freed if a framebuffer modeset object still uses it.
4497 * Called by the user via ioctl.
4500 * Zero on success, errno on failure.
4502 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
4503 void *data, struct drm_file *file_priv)
4505 struct drm_mode_destroy_dumb *args = data;
4507 if (!dev->driver->dumb_destroy)
4510 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
4514 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4515 * @format: pixel format (DRM_FORMAT_*)
4516 * @depth: storage for the depth value
4517 * @bpp: storage for the bpp value
4519 * This only supports RGB formats here for compat with code that doesn't use
4520 * pixel formats directly yet.
4522 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
4527 case DRM_FORMAT_RGB332:
4528 case DRM_FORMAT_BGR233:
4532 case DRM_FORMAT_XRGB1555:
4533 case DRM_FORMAT_XBGR1555:
4534 case DRM_FORMAT_RGBX5551:
4535 case DRM_FORMAT_BGRX5551:
4536 case DRM_FORMAT_ARGB1555:
4537 case DRM_FORMAT_ABGR1555:
4538 case DRM_FORMAT_RGBA5551:
4539 case DRM_FORMAT_BGRA5551:
4543 case DRM_FORMAT_RGB565:
4544 case DRM_FORMAT_BGR565:
4548 case DRM_FORMAT_RGB888:
4549 case DRM_FORMAT_BGR888:
4553 case DRM_FORMAT_XRGB8888:
4554 case DRM_FORMAT_XBGR8888:
4555 case DRM_FORMAT_RGBX8888:
4556 case DRM_FORMAT_BGRX8888:
4560 case DRM_FORMAT_XRGB2101010:
4561 case DRM_FORMAT_XBGR2101010:
4562 case DRM_FORMAT_RGBX1010102:
4563 case DRM_FORMAT_BGRX1010102:
4564 case DRM_FORMAT_ARGB2101010:
4565 case DRM_FORMAT_ABGR2101010:
4566 case DRM_FORMAT_RGBA1010102:
4567 case DRM_FORMAT_BGRA1010102:
4571 case DRM_FORMAT_ARGB8888:
4572 case DRM_FORMAT_ABGR8888:
4573 case DRM_FORMAT_RGBA8888:
4574 case DRM_FORMAT_BGRA8888:
4579 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4580 drm_get_format_name(format));
4586 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
4589 * drm_format_num_planes - get the number of planes for format
4590 * @format: pixel format (DRM_FORMAT_*)
4593 * The number of planes used by the specified pixel format.
4595 int drm_format_num_planes(uint32_t format)
4598 case DRM_FORMAT_YUV410:
4599 case DRM_FORMAT_YVU410:
4600 case DRM_FORMAT_YUV411:
4601 case DRM_FORMAT_YVU411:
4602 case DRM_FORMAT_YUV420:
4603 case DRM_FORMAT_YVU420:
4604 case DRM_FORMAT_YUV422:
4605 case DRM_FORMAT_YVU422:
4606 case DRM_FORMAT_YUV444:
4607 case DRM_FORMAT_YVU444:
4609 case DRM_FORMAT_NV12:
4610 case DRM_FORMAT_NV21:
4611 case DRM_FORMAT_NV16:
4612 case DRM_FORMAT_NV61:
4613 case DRM_FORMAT_NV24:
4614 case DRM_FORMAT_NV42:
4620 EXPORT_SYMBOL(drm_format_num_planes);
4623 * drm_format_plane_cpp - determine the bytes per pixel value
4624 * @format: pixel format (DRM_FORMAT_*)
4625 * @plane: plane index
4628 * The bytes per pixel value for the specified plane.
4630 int drm_format_plane_cpp(uint32_t format, int plane)
4635 if (plane >= drm_format_num_planes(format))
4639 case DRM_FORMAT_YUYV:
4640 case DRM_FORMAT_YVYU:
4641 case DRM_FORMAT_UYVY:
4642 case DRM_FORMAT_VYUY:
4644 case DRM_FORMAT_NV12:
4645 case DRM_FORMAT_NV21:
4646 case DRM_FORMAT_NV16:
4647 case DRM_FORMAT_NV61:
4648 case DRM_FORMAT_NV24:
4649 case DRM_FORMAT_NV42:
4650 return plane ? 2 : 1;
4651 case DRM_FORMAT_YUV410:
4652 case DRM_FORMAT_YVU410:
4653 case DRM_FORMAT_YUV411:
4654 case DRM_FORMAT_YVU411:
4655 case DRM_FORMAT_YUV420:
4656 case DRM_FORMAT_YVU420:
4657 case DRM_FORMAT_YUV422:
4658 case DRM_FORMAT_YVU422:
4659 case DRM_FORMAT_YUV444:
4660 case DRM_FORMAT_YVU444:
4663 drm_fb_get_bpp_depth(format, &depth, &bpp);
4667 EXPORT_SYMBOL(drm_format_plane_cpp);
4670 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
4671 * @format: pixel format (DRM_FORMAT_*)
4674 * The horizontal chroma subsampling factor for the
4675 * specified pixel format.
4677 int drm_format_horz_chroma_subsampling(uint32_t format)
4680 case DRM_FORMAT_YUV411:
4681 case DRM_FORMAT_YVU411:
4682 case DRM_FORMAT_YUV410:
4683 case DRM_FORMAT_YVU410:
4685 case DRM_FORMAT_YUYV:
4686 case DRM_FORMAT_YVYU:
4687 case DRM_FORMAT_UYVY:
4688 case DRM_FORMAT_VYUY:
4689 case DRM_FORMAT_NV12:
4690 case DRM_FORMAT_NV21:
4691 case DRM_FORMAT_NV16:
4692 case DRM_FORMAT_NV61:
4693 case DRM_FORMAT_YUV422:
4694 case DRM_FORMAT_YVU422:
4695 case DRM_FORMAT_YUV420:
4696 case DRM_FORMAT_YVU420:
4702 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
4705 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
4706 * @format: pixel format (DRM_FORMAT_*)
4709 * The vertical chroma subsampling factor for the
4710 * specified pixel format.
4712 int drm_format_vert_chroma_subsampling(uint32_t format)
4715 case DRM_FORMAT_YUV410:
4716 case DRM_FORMAT_YVU410:
4718 case DRM_FORMAT_YUV420:
4719 case DRM_FORMAT_YVU420:
4720 case DRM_FORMAT_NV12:
4721 case DRM_FORMAT_NV21:
4727 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
4730 * drm_mode_config_init - initialize DRM mode_configuration structure
4733 * Initialize @dev's mode_config structure, used for tracking the graphics
4734 * configuration of @dev.
4736 * Since this initializes the modeset locks, no locking is possible. Which is no
4737 * problem, since this should happen single threaded at init time. It is the
4738 * driver's problem to ensure this guarantee.
4741 void drm_mode_config_init(struct drm_device *dev)
4743 mutex_init(&dev->mode_config.mutex);
4744 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
4745 mutex_init(&dev->mode_config.idr_mutex);
4746 mutex_init(&dev->mode_config.fb_lock);
4747 INIT_LIST_HEAD(&dev->mode_config.fb_list);
4748 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
4749 INIT_LIST_HEAD(&dev->mode_config.connector_list);
4750 INIT_LIST_HEAD(&dev->mode_config.bridge_list);
4751 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
4752 INIT_LIST_HEAD(&dev->mode_config.property_list);
4753 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
4754 INIT_LIST_HEAD(&dev->mode_config.plane_list);
4755 idr_init(&dev->mode_config.crtc_idr);
4757 drm_modeset_lock_all(dev);
4758 drm_mode_create_standard_connector_properties(dev);
4759 drm_mode_create_standard_plane_properties(dev);
4760 drm_modeset_unlock_all(dev);
4762 /* Just to be sure */
4763 dev->mode_config.num_fb = 0;
4764 dev->mode_config.num_connector = 0;
4765 dev->mode_config.num_crtc = 0;
4766 dev->mode_config.num_encoder = 0;
4767 dev->mode_config.num_overlay_plane = 0;
4768 dev->mode_config.num_total_plane = 0;
4770 EXPORT_SYMBOL(drm_mode_config_init);
4773 * drm_mode_config_cleanup - free up DRM mode_config info
4776 * Free up all the connectors and CRTCs associated with this DRM device, then
4777 * free up the framebuffers and associated buffer objects.
4779 * Note that since this /should/ happen single-threaded at driver/device
4780 * teardown time, no locking is required. It's the driver's job to ensure that
4781 * this guarantee actually holds true.
4783 * FIXME: cleanup any dangling user buffer objects too
4785 void drm_mode_config_cleanup(struct drm_device *dev)
4787 struct drm_connector *connector, *ot;
4788 struct drm_crtc *crtc, *ct;
4789 struct drm_encoder *encoder, *enct;
4790 struct drm_bridge *bridge, *brt;
4791 struct drm_framebuffer *fb, *fbt;
4792 struct drm_property *property, *pt;
4793 struct drm_property_blob *blob, *bt;
4794 struct drm_plane *plane, *plt;
4796 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
4798 encoder->funcs->destroy(encoder);
4801 list_for_each_entry_safe(bridge, brt,
4802 &dev->mode_config.bridge_list, head) {
4803 bridge->funcs->destroy(bridge);
4806 list_for_each_entry_safe(connector, ot,
4807 &dev->mode_config.connector_list, head) {
4808 connector->funcs->destroy(connector);
4811 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
4813 drm_property_destroy(dev, property);
4816 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
4818 drm_property_destroy_blob(dev, blob);
4822 * Single-threaded teardown context, so it's not required to grab the
4823 * fb_lock to protect against concurrent fb_list access. Contrary, it
4824 * would actually deadlock with the drm_framebuffer_cleanup function.
4826 * Also, if there are any framebuffers left, that's a driver leak now,
4827 * so politely WARN about this.
4829 WARN_ON(!list_empty(&dev->mode_config.fb_list));
4830 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
4831 drm_framebuffer_remove(fb);
4834 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
4836 plane->funcs->destroy(plane);
4839 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
4840 crtc->funcs->destroy(crtc);
4843 idr_destroy(&dev->mode_config.crtc_idr);
4844 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
4846 EXPORT_SYMBOL(drm_mode_config_cleanup);