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>
41 #include <drm/drm_atomic.h>
43 #include "drm_crtc_internal.h"
44 #include "drm_internal.h"
46 static struct drm_framebuffer *
47 internal_framebuffer_create(struct drm_device *dev,
48 struct drm_mode_fb_cmd2 *r,
49 struct drm_file *file_priv);
51 /* Avoid boilerplate. I'm tired of typing. */
52 #define DRM_ENUM_NAME_FN(fnname, list) \
53 const char *fnname(int val) \
56 for (i = 0; i < ARRAY_SIZE(list); i++) { \
57 if (list[i].type == val) \
58 return list[i].name; \
66 static const struct drm_prop_enum_list drm_dpms_enum_list[] = {
67 { DRM_MODE_DPMS_ON, "On" },
68 { DRM_MODE_DPMS_STANDBY, "Standby" },
69 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
70 { DRM_MODE_DPMS_OFF, "Off" }
73 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
75 static const struct drm_prop_enum_list drm_plane_type_enum_list[] = {
76 { DRM_PLANE_TYPE_OVERLAY, "Overlay" },
77 { DRM_PLANE_TYPE_PRIMARY, "Primary" },
78 { DRM_PLANE_TYPE_CURSOR, "Cursor" },
84 static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] = {
85 { DRM_MODE_SCALE_NONE, "None" },
86 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
87 { DRM_MODE_SCALE_CENTER, "Center" },
88 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
91 static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = {
92 { DRM_MODE_PICTURE_ASPECT_NONE, "Automatic" },
93 { DRM_MODE_PICTURE_ASPECT_4_3, "4:3" },
94 { DRM_MODE_PICTURE_ASPECT_16_9, "16:9" },
98 * Non-global properties, but "required" for certain connectors.
100 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = {
101 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
102 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
103 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
106 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
108 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = {
109 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
110 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
111 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
114 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
115 drm_dvi_i_subconnector_enum_list)
117 static const struct drm_prop_enum_list drm_tv_select_enum_list[] = {
118 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
119 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
120 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
121 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
122 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
125 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
127 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = {
128 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
129 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
130 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
131 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
132 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
135 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
136 drm_tv_subconnector_enum_list)
138 static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
139 { DRM_MODE_DIRTY_OFF, "Off" },
140 { DRM_MODE_DIRTY_ON, "On" },
141 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
144 struct drm_conn_prop_enum_list {
151 * Connector and encoder types.
153 static struct drm_conn_prop_enum_list drm_connector_enum_list[] = {
154 { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
155 { DRM_MODE_CONNECTOR_VGA, "VGA" },
156 { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
157 { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
158 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
159 { DRM_MODE_CONNECTOR_Composite, "Composite" },
160 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
161 { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
162 { DRM_MODE_CONNECTOR_Component, "Component" },
163 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
164 { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
165 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
166 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
167 { DRM_MODE_CONNECTOR_TV, "TV" },
168 { DRM_MODE_CONNECTOR_eDP, "eDP" },
169 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
170 { DRM_MODE_CONNECTOR_DSI, "DSI" },
173 static const struct drm_prop_enum_list drm_encoder_enum_list[] = {
174 { DRM_MODE_ENCODER_NONE, "None" },
175 { DRM_MODE_ENCODER_DAC, "DAC" },
176 { DRM_MODE_ENCODER_TMDS, "TMDS" },
177 { DRM_MODE_ENCODER_LVDS, "LVDS" },
178 { DRM_MODE_ENCODER_TVDAC, "TV" },
179 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
180 { DRM_MODE_ENCODER_DSI, "DSI" },
181 { DRM_MODE_ENCODER_DPMST, "DP MST" },
184 static const struct drm_prop_enum_list drm_subpixel_enum_list[] = {
185 { SubPixelUnknown, "Unknown" },
186 { SubPixelHorizontalRGB, "Horizontal RGB" },
187 { SubPixelHorizontalBGR, "Horizontal BGR" },
188 { SubPixelVerticalRGB, "Vertical RGB" },
189 { SubPixelVerticalBGR, "Vertical BGR" },
190 { SubPixelNone, "None" },
193 void drm_connector_ida_init(void)
197 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
198 ida_init(&drm_connector_enum_list[i].ida);
201 void drm_connector_ida_destroy(void)
205 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
206 ida_destroy(&drm_connector_enum_list[i].ida);
210 * drm_get_connector_status_name - return a string for connector status
211 * @status: connector status to compute name of
213 * In contrast to the other drm_get_*_name functions this one here returns a
214 * const pointer and hence is threadsafe.
216 const char *drm_get_connector_status_name(enum drm_connector_status status)
218 if (status == connector_status_connected)
220 else if (status == connector_status_disconnected)
221 return "disconnected";
225 EXPORT_SYMBOL(drm_get_connector_status_name);
228 * drm_get_subpixel_order_name - return a string for a given subpixel enum
229 * @order: enum of subpixel_order
231 * Note you could abuse this and return something out of bounds, but that
232 * would be a caller error. No unscrubbed user data should make it here.
234 const char *drm_get_subpixel_order_name(enum subpixel_order order)
236 return drm_subpixel_enum_list[order].name;
238 EXPORT_SYMBOL(drm_get_subpixel_order_name);
240 static char printable_char(int c)
242 return isascii(c) && isprint(c) ? c : '?';
246 * drm_get_format_name - return a string for drm fourcc format
247 * @format: format to compute name of
249 * Note that the buffer used by this function is globally shared and owned by
250 * the function itself.
252 * FIXME: This isn't really multithreading safe.
254 const char *drm_get_format_name(uint32_t format)
258 snprintf(buf, sizeof(buf),
259 "%c%c%c%c %s-endian (0x%08x)",
260 printable_char(format & 0xff),
261 printable_char((format >> 8) & 0xff),
262 printable_char((format >> 16) & 0xff),
263 printable_char((format >> 24) & 0x7f),
264 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
269 EXPORT_SYMBOL(drm_get_format_name);
272 * Internal function to assign a slot in the object idr and optionally
273 * register the object into the idr.
275 static int drm_mode_object_get_reg(struct drm_device *dev,
276 struct drm_mode_object *obj,
282 mutex_lock(&dev->mode_config.idr_mutex);
283 ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
286 * Set up the object linking under the protection of the idr
287 * lock so that other users can't see inconsistent state.
290 obj->type = obj_type;
292 mutex_unlock(&dev->mode_config.idr_mutex);
294 return ret < 0 ? ret : 0;
298 * drm_mode_object_get - allocate a new modeset identifier
300 * @obj: object pointer, used to generate unique ID
301 * @obj_type: object type
303 * Create a unique identifier based on @ptr in @dev's identifier space. Used
304 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
305 * modeset identifiers are _not_ reference counted. Hence don't use this for
306 * reference counted modeset objects like framebuffers.
309 * New unique (relative to other objects in @dev) integer identifier for the
312 int drm_mode_object_get(struct drm_device *dev,
313 struct drm_mode_object *obj, uint32_t obj_type)
315 return drm_mode_object_get_reg(dev, obj, obj_type, true);
318 static void drm_mode_object_register(struct drm_device *dev,
319 struct drm_mode_object *obj)
321 mutex_lock(&dev->mode_config.idr_mutex);
322 idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
323 mutex_unlock(&dev->mode_config.idr_mutex);
327 * drm_mode_object_put - free a modeset identifer
329 * @object: object to free
331 * Free @id from @dev's unique identifier pool. Note that despite the _get
332 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
333 * for reference counted modeset objects like framebuffers.
335 void drm_mode_object_put(struct drm_device *dev,
336 struct drm_mode_object *object)
338 mutex_lock(&dev->mode_config.idr_mutex);
339 idr_remove(&dev->mode_config.crtc_idr, object->id);
340 mutex_unlock(&dev->mode_config.idr_mutex);
343 static struct drm_mode_object *_object_find(struct drm_device *dev,
344 uint32_t id, uint32_t type)
346 struct drm_mode_object *obj = NULL;
348 mutex_lock(&dev->mode_config.idr_mutex);
349 obj = idr_find(&dev->mode_config.crtc_idr, id);
350 if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
352 if (obj && obj->id != id)
354 /* don't leak out unref'd fb's */
356 (obj->type == DRM_MODE_OBJECT_FB ||
357 obj->type == DRM_MODE_OBJECT_BLOB))
359 mutex_unlock(&dev->mode_config.idr_mutex);
365 * drm_mode_object_find - look up a drm object with static lifetime
367 * @id: id of the mode object
368 * @type: type of the mode object
370 * Note that framebuffers cannot be looked up with this functions - since those
371 * are reference counted, they need special treatment. Even with
372 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
373 * rather than WARN_ON()).
375 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
376 uint32_t id, uint32_t type)
378 struct drm_mode_object *obj = NULL;
380 /* Framebuffers are reference counted and need their own lookup
382 WARN_ON(type == DRM_MODE_OBJECT_FB || type == DRM_MODE_OBJECT_BLOB);
383 obj = _object_find(dev, id, type);
386 EXPORT_SYMBOL(drm_mode_object_find);
389 * drm_framebuffer_init - initialize a framebuffer
391 * @fb: framebuffer to be initialized
392 * @funcs: ... with these functions
394 * Allocates an ID for the framebuffer's parent mode object, sets its mode
395 * functions & device file and adds it to the master fd list.
398 * This functions publishes the fb and makes it available for concurrent access
399 * by other users. Which means by this point the fb _must_ be fully set up -
400 * since all the fb attributes are invariant over its lifetime, no further
401 * locking but only correct reference counting is required.
404 * Zero on success, error code on failure.
406 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
407 const struct drm_framebuffer_funcs *funcs)
411 mutex_lock(&dev->mode_config.fb_lock);
412 kref_init(&fb->refcount);
413 INIT_LIST_HEAD(&fb->filp_head);
417 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
421 dev->mode_config.num_fb++;
422 list_add(&fb->head, &dev->mode_config.fb_list);
424 mutex_unlock(&dev->mode_config.fb_lock);
428 EXPORT_SYMBOL(drm_framebuffer_init);
430 /* dev->mode_config.fb_lock must be held! */
431 static void __drm_framebuffer_unregister(struct drm_device *dev,
432 struct drm_framebuffer *fb)
434 mutex_lock(&dev->mode_config.idr_mutex);
435 idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
436 mutex_unlock(&dev->mode_config.idr_mutex);
441 static void drm_framebuffer_free(struct kref *kref)
443 struct drm_framebuffer *fb =
444 container_of(kref, struct drm_framebuffer, refcount);
445 struct drm_device *dev = fb->dev;
448 * The lookup idr holds a weak reference, which has not necessarily been
449 * removed at this point. Check for that.
451 mutex_lock(&dev->mode_config.fb_lock);
453 /* Mark fb as reaped and drop idr ref. */
454 __drm_framebuffer_unregister(dev, fb);
456 mutex_unlock(&dev->mode_config.fb_lock);
458 fb->funcs->destroy(fb);
461 static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
464 struct drm_mode_object *obj = NULL;
465 struct drm_framebuffer *fb;
467 mutex_lock(&dev->mode_config.idr_mutex);
468 obj = idr_find(&dev->mode_config.crtc_idr, id);
469 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
473 mutex_unlock(&dev->mode_config.idr_mutex);
479 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
481 * @id: id of the fb object
483 * If successful, this grabs an additional reference to the framebuffer -
484 * callers need to make sure to eventually unreference the returned framebuffer
485 * again, using @drm_framebuffer_unreference.
487 struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
490 struct drm_framebuffer *fb;
492 mutex_lock(&dev->mode_config.fb_lock);
493 fb = __drm_framebuffer_lookup(dev, id);
495 if (!kref_get_unless_zero(&fb->refcount))
498 mutex_unlock(&dev->mode_config.fb_lock);
502 EXPORT_SYMBOL(drm_framebuffer_lookup);
505 * drm_framebuffer_unreference - unref a framebuffer
506 * @fb: framebuffer to unref
508 * This functions decrements the fb's refcount and frees it if it drops to zero.
510 void drm_framebuffer_unreference(struct drm_framebuffer *fb)
512 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
513 kref_put(&fb->refcount, drm_framebuffer_free);
515 EXPORT_SYMBOL(drm_framebuffer_unreference);
518 * drm_framebuffer_reference - incr the fb refcnt
521 * This functions increments the fb's refcount.
523 void drm_framebuffer_reference(struct drm_framebuffer *fb)
525 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
526 kref_get(&fb->refcount);
528 EXPORT_SYMBOL(drm_framebuffer_reference);
531 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
532 * @fb: fb to unregister
534 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
535 * those used for fbdev. Note that the caller must hold a reference of it's own,
536 * i.e. the object may not be destroyed through this call (since it'll lead to a
537 * locking inversion).
539 void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
541 struct drm_device *dev;
548 mutex_lock(&dev->mode_config.fb_lock);
549 /* Mark fb as reaped and drop idr ref. */
550 __drm_framebuffer_unregister(dev, fb);
551 mutex_unlock(&dev->mode_config.fb_lock);
553 EXPORT_SYMBOL(drm_framebuffer_unregister_private);
556 * drm_framebuffer_cleanup - remove a framebuffer object
557 * @fb: framebuffer to remove
559 * Cleanup framebuffer. This function is intended to be used from the drivers
560 * ->destroy callback. It can also be used to clean up driver private
561 * framebuffers embedded into a larger structure.
563 * Note that this function does not remove the fb from active usuage - if it is
564 * still used anywhere, hilarity can ensue since userspace could call getfb on
565 * the id and get back -EINVAL. Obviously no concern at driver unload time.
567 * Also, the framebuffer will not be removed from the lookup idr - for
568 * user-created framebuffers this will happen in in the rmfb ioctl. For
569 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
570 * drm_framebuffer_unregister_private.
572 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
574 struct drm_device *dev = fb->dev;
576 mutex_lock(&dev->mode_config.fb_lock);
578 dev->mode_config.num_fb--;
579 mutex_unlock(&dev->mode_config.fb_lock);
581 EXPORT_SYMBOL(drm_framebuffer_cleanup);
584 * drm_framebuffer_remove - remove and unreference a framebuffer object
585 * @fb: framebuffer to remove
587 * Scans all the CRTCs and planes in @dev's mode_config. If they're
588 * using @fb, removes it, setting it to NULL. Then drops the reference to the
589 * passed-in framebuffer. Might take the modeset locks.
591 * Note that this function optimizes the cleanup away if the caller holds the
592 * last reference to the framebuffer. It is also guaranteed to not take the
593 * modeset locks in this case.
595 void drm_framebuffer_remove(struct drm_framebuffer *fb)
597 struct drm_device *dev;
598 struct drm_crtc *crtc;
599 struct drm_plane *plane;
600 struct drm_mode_set set;
608 WARN_ON(!list_empty(&fb->filp_head));
611 * drm ABI mandates that we remove any deleted framebuffers from active
612 * useage. But since most sane clients only remove framebuffers they no
613 * longer need, try to optimize this away.
615 * Since we're holding a reference ourselves, observing a refcount of 1
616 * means that we're the last holder and can skip it. Also, the refcount
617 * can never increase from 1 again, so we don't need any barriers or
620 * Note that userspace could try to race with use and instate a new
621 * usage _after_ we've cleared all current ones. End result will be an
622 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
625 if (atomic_read(&fb->refcount.refcount) > 1) {
626 drm_modeset_lock_all(dev);
627 /* remove from any CRTC */
628 drm_for_each_crtc(crtc, dev) {
629 if (crtc->primary->fb == fb) {
630 /* should turn off the crtc */
631 memset(&set, 0, sizeof(struct drm_mode_set));
634 ret = drm_mode_set_config_internal(&set);
636 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
640 drm_for_each_plane(plane, dev) {
642 drm_plane_force_disable(plane);
644 drm_modeset_unlock_all(dev);
647 drm_framebuffer_unreference(fb);
649 EXPORT_SYMBOL(drm_framebuffer_remove);
651 DEFINE_WW_CLASS(crtc_ww_class);
654 * drm_crtc_init_with_planes - Initialise a new CRTC object with
655 * specified primary and cursor planes.
657 * @crtc: CRTC object to init
658 * @primary: Primary plane for CRTC
659 * @cursor: Cursor plane for CRTC
660 * @funcs: callbacks for the new CRTC
662 * Inits a new object created as base part of a driver crtc object.
665 * Zero on success, error code on failure.
667 int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
668 struct drm_plane *primary,
669 struct drm_plane *cursor,
670 const struct drm_crtc_funcs *funcs)
672 struct drm_mode_config *config = &dev->mode_config;
675 WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY);
676 WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR);
680 crtc->invert_dimensions = false;
682 drm_modeset_lock_init(&crtc->mutex);
683 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
687 crtc->base.properties = &crtc->properties;
689 list_add_tail(&crtc->head, &config->crtc_list);
692 crtc->primary = primary;
693 crtc->cursor = cursor;
695 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
697 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
699 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
700 drm_object_attach_property(&crtc->base, config->prop_active, 0);
701 drm_object_attach_property(&crtc->base, config->prop_mode_id, 0);
706 EXPORT_SYMBOL(drm_crtc_init_with_planes);
709 * drm_crtc_cleanup - Clean up the core crtc usage
710 * @crtc: CRTC to cleanup
712 * This function cleans up @crtc and removes it from the DRM mode setting
713 * core. Note that the function does *not* free the crtc structure itself,
714 * this is the responsibility of the caller.
716 void drm_crtc_cleanup(struct drm_crtc *crtc)
718 struct drm_device *dev = crtc->dev;
720 kfree(crtc->gamma_store);
721 crtc->gamma_store = NULL;
723 drm_modeset_lock_fini(&crtc->mutex);
725 drm_mode_object_put(dev, &crtc->base);
726 list_del(&crtc->head);
727 dev->mode_config.num_crtc--;
729 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
730 if (crtc->state && crtc->funcs->atomic_destroy_state)
731 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
733 memset(crtc, 0, sizeof(*crtc));
735 EXPORT_SYMBOL(drm_crtc_cleanup);
738 * drm_crtc_index - find the index of a registered CRTC
739 * @crtc: CRTC to find index for
741 * Given a registered CRTC, return the index of that CRTC within a DRM
742 * device's list of CRTCs.
744 unsigned int drm_crtc_index(struct drm_crtc *crtc)
746 unsigned int index = 0;
747 struct drm_crtc *tmp;
749 drm_for_each_crtc(tmp, crtc->dev) {
758 EXPORT_SYMBOL(drm_crtc_index);
761 * drm_mode_remove - remove and free a mode
762 * @connector: connector list to modify
763 * @mode: mode to remove
765 * Remove @mode from @connector's mode list, then free it.
767 static void drm_mode_remove(struct drm_connector *connector,
768 struct drm_display_mode *mode)
770 list_del(&mode->head);
771 drm_mode_destroy(connector->dev, mode);
775 * drm_display_info_set_bus_formats - set the supported bus formats
776 * @info: display info to store bus formats in
777 * @formats: array containing the supported bus formats
778 * @num_formats: the number of entries in the fmts array
780 * Store the supported bus formats in display info structure.
781 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
782 * a full list of available formats.
784 int drm_display_info_set_bus_formats(struct drm_display_info *info,
786 unsigned int num_formats)
790 if (!formats && num_formats)
793 if (formats && num_formats) {
794 fmts = kmemdup(formats, sizeof(*formats) * num_formats,
800 kfree(info->bus_formats);
801 info->bus_formats = fmts;
802 info->num_bus_formats = num_formats;
806 EXPORT_SYMBOL(drm_display_info_set_bus_formats);
809 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
810 * @connector: connector to quwery
812 * The kernel supports per-connector configration of its consoles through
813 * use of the video= parameter. This function parses that option and
814 * extracts the user's specified mode (or enable/disable status) for a
815 * particular connector. This is typically only used during the early fbdev
818 static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
820 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
823 if (fb_get_options(connector->name, &option))
826 if (!drm_mode_parse_command_line_for_connector(option,
834 switch (mode->force) {
838 case DRM_FORCE_ON_DIGITAL:
847 DRM_INFO("forcing %s connector %s\n", connector->name, s);
848 connector->force = mode->force;
851 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
853 mode->xres, mode->yres,
854 mode->refresh_specified ? mode->refresh : 60,
855 mode->rb ? " reduced blanking" : "",
856 mode->margins ? " with margins" : "",
857 mode->interlace ? " interlaced" : "");
861 * drm_connector_init - Init a preallocated connector
863 * @connector: the connector to init
864 * @funcs: callbacks for this connector
865 * @connector_type: user visible type of the connector
867 * Initialises a preallocated connector. Connectors should be
868 * subclassed as part of driver connector objects.
871 * Zero on success, error code on failure.
873 int drm_connector_init(struct drm_device *dev,
874 struct drm_connector *connector,
875 const struct drm_connector_funcs *funcs,
878 struct drm_mode_config *config = &dev->mode_config;
880 struct ida *connector_ida =
881 &drm_connector_enum_list[connector_type].ida;
883 drm_modeset_lock_all(dev);
885 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false);
889 connector->base.properties = &connector->properties;
890 connector->dev = dev;
891 connector->funcs = funcs;
892 connector->connector_type = connector_type;
893 connector->connector_type_id =
894 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
895 if (connector->connector_type_id < 0) {
896 ret = connector->connector_type_id;
900 kasprintf(GFP_KERNEL, "%s-%d",
901 drm_connector_enum_list[connector_type].name,
902 connector->connector_type_id);
903 if (!connector->name) {
908 INIT_LIST_HEAD(&connector->probed_modes);
909 INIT_LIST_HEAD(&connector->modes);
910 connector->edid_blob_ptr = NULL;
911 connector->status = connector_status_unknown;
913 drm_connector_get_cmdline_mode(connector);
915 /* We should add connectors at the end to avoid upsetting the connector
917 list_add_tail(&connector->head, &config->connector_list);
918 config->num_connector++;
920 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
921 drm_object_attach_property(&connector->base,
922 config->edid_property,
925 drm_object_attach_property(&connector->base,
926 config->dpms_property, 0);
928 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
929 drm_object_attach_property(&connector->base, config->prop_crtc_id, 0);
932 connector->debugfs_entry = NULL;
936 drm_mode_object_put(dev, &connector->base);
939 drm_modeset_unlock_all(dev);
943 EXPORT_SYMBOL(drm_connector_init);
946 * drm_connector_cleanup - cleans up an initialised connector
947 * @connector: connector to cleanup
949 * Cleans up the connector but doesn't free the object.
951 void drm_connector_cleanup(struct drm_connector *connector)
953 struct drm_device *dev = connector->dev;
954 struct drm_display_mode *mode, *t;
956 if (connector->tile_group) {
957 drm_mode_put_tile_group(dev, connector->tile_group);
958 connector->tile_group = NULL;
961 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
962 drm_mode_remove(connector, mode);
964 list_for_each_entry_safe(mode, t, &connector->modes, head)
965 drm_mode_remove(connector, mode);
967 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
968 connector->connector_type_id);
970 kfree(connector->display_info.bus_formats);
971 drm_mode_object_put(dev, &connector->base);
972 kfree(connector->name);
973 connector->name = NULL;
974 list_del(&connector->head);
975 dev->mode_config.num_connector--;
977 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
978 if (connector->state && connector->funcs->atomic_destroy_state)
979 connector->funcs->atomic_destroy_state(connector,
982 memset(connector, 0, sizeof(*connector));
984 EXPORT_SYMBOL(drm_connector_cleanup);
987 * drm_connector_index - find the index of a registered connector
988 * @connector: connector to find index for
990 * Given a registered connector, return the index of that connector within a DRM
991 * device's list of connectors.
993 unsigned int drm_connector_index(struct drm_connector *connector)
995 unsigned int index = 0;
996 struct drm_connector *tmp;
997 struct drm_mode_config *config = &connector->dev->mode_config;
999 WARN_ON(!drm_modeset_is_locked(&config->connection_mutex));
1001 drm_for_each_connector(tmp, connector->dev) {
1002 if (tmp == connector)
1010 EXPORT_SYMBOL(drm_connector_index);
1013 * drm_connector_register - register a connector
1014 * @connector: the connector to register
1016 * Register userspace interfaces for a connector
1019 * Zero on success, error code on failure.
1021 int drm_connector_register(struct drm_connector *connector)
1025 drm_mode_object_register(connector->dev, &connector->base);
1027 ret = drm_sysfs_connector_add(connector);
1031 ret = drm_debugfs_connector_add(connector);
1033 drm_sysfs_connector_remove(connector);
1039 EXPORT_SYMBOL(drm_connector_register);
1042 * drm_connector_unregister - unregister a connector
1043 * @connector: the connector to unregister
1045 * Unregister userspace interfaces for a connector
1047 void drm_connector_unregister(struct drm_connector *connector)
1049 drm_sysfs_connector_remove(connector);
1050 drm_debugfs_connector_remove(connector);
1052 EXPORT_SYMBOL(drm_connector_unregister);
1056 * drm_connector_unplug_all - unregister connector userspace interfaces
1059 * This function unregisters all connector userspace interfaces in sysfs. Should
1060 * be call when the device is disconnected, e.g. from an usb driver's
1061 * ->disconnect callback.
1063 void drm_connector_unplug_all(struct drm_device *dev)
1065 struct drm_connector *connector;
1067 /* FIXME: taking the mode config mutex ends up in a clash with sysfs */
1068 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1069 drm_connector_unregister(connector);
1072 EXPORT_SYMBOL(drm_connector_unplug_all);
1075 * drm_encoder_init - Init a preallocated encoder
1077 * @encoder: the encoder to init
1078 * @funcs: callbacks for this encoder
1079 * @encoder_type: user visible type of the encoder
1081 * Initialises a preallocated encoder. Encoder should be
1082 * subclassed as part of driver encoder objects.
1085 * Zero on success, error code on failure.
1087 int drm_encoder_init(struct drm_device *dev,
1088 struct drm_encoder *encoder,
1089 const struct drm_encoder_funcs *funcs,
1094 drm_modeset_lock_all(dev);
1096 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1101 encoder->encoder_type = encoder_type;
1102 encoder->funcs = funcs;
1103 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1104 drm_encoder_enum_list[encoder_type].name,
1106 if (!encoder->name) {
1111 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1112 dev->mode_config.num_encoder++;
1116 drm_mode_object_put(dev, &encoder->base);
1119 drm_modeset_unlock_all(dev);
1123 EXPORT_SYMBOL(drm_encoder_init);
1126 * drm_encoder_cleanup - cleans up an initialised encoder
1127 * @encoder: encoder to cleanup
1129 * Cleans up the encoder but doesn't free the object.
1131 void drm_encoder_cleanup(struct drm_encoder *encoder)
1133 struct drm_device *dev = encoder->dev;
1135 drm_modeset_lock_all(dev);
1136 drm_mode_object_put(dev, &encoder->base);
1137 kfree(encoder->name);
1138 list_del(&encoder->head);
1139 dev->mode_config.num_encoder--;
1140 drm_modeset_unlock_all(dev);
1142 memset(encoder, 0, sizeof(*encoder));
1144 EXPORT_SYMBOL(drm_encoder_cleanup);
1147 * drm_universal_plane_init - Initialize a new universal plane object
1149 * @plane: plane object to init
1150 * @possible_crtcs: bitmask of possible CRTCs
1151 * @funcs: callbacks for the new plane
1152 * @formats: array of supported formats (%DRM_FORMAT_*)
1153 * @format_count: number of elements in @formats
1154 * @type: type of plane (overlay, primary, cursor)
1156 * Initializes a plane object of type @type.
1159 * Zero on success, error code on failure.
1161 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1162 unsigned long possible_crtcs,
1163 const struct drm_plane_funcs *funcs,
1164 const uint32_t *formats, unsigned int format_count,
1165 enum drm_plane_type type)
1167 struct drm_mode_config *config = &dev->mode_config;
1170 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1174 drm_modeset_lock_init(&plane->mutex);
1176 plane->base.properties = &plane->properties;
1178 plane->funcs = funcs;
1179 plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
1181 if (!plane->format_types) {
1182 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1183 drm_mode_object_put(dev, &plane->base);
1187 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1188 plane->format_count = format_count;
1189 plane->possible_crtcs = possible_crtcs;
1192 list_add_tail(&plane->head, &config->plane_list);
1193 config->num_total_plane++;
1194 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1195 config->num_overlay_plane++;
1197 drm_object_attach_property(&plane->base,
1198 config->plane_type_property,
1201 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
1202 drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
1203 drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
1204 drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
1205 drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
1206 drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
1207 drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
1208 drm_object_attach_property(&plane->base, config->prop_src_x, 0);
1209 drm_object_attach_property(&plane->base, config->prop_src_y, 0);
1210 drm_object_attach_property(&plane->base, config->prop_src_w, 0);
1211 drm_object_attach_property(&plane->base, config->prop_src_h, 0);
1216 EXPORT_SYMBOL(drm_universal_plane_init);
1219 * drm_plane_init - Initialize a legacy plane
1221 * @plane: plane object to init
1222 * @possible_crtcs: bitmask of possible CRTCs
1223 * @funcs: callbacks for the new plane
1224 * @formats: array of supported formats (%DRM_FORMAT_*)
1225 * @format_count: number of elements in @formats
1226 * @is_primary: plane type (primary vs overlay)
1228 * Legacy API to initialize a DRM plane.
1230 * New drivers should call drm_universal_plane_init() instead.
1233 * Zero on success, error code on failure.
1235 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1236 unsigned long possible_crtcs,
1237 const struct drm_plane_funcs *funcs,
1238 const uint32_t *formats, unsigned int format_count,
1241 enum drm_plane_type type;
1243 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1244 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1245 formats, format_count, type);
1247 EXPORT_SYMBOL(drm_plane_init);
1250 * drm_plane_cleanup - Clean up the core plane usage
1251 * @plane: plane to cleanup
1253 * This function cleans up @plane and removes it from the DRM mode setting
1254 * core. Note that the function does *not* free the plane structure itself,
1255 * this is the responsibility of the caller.
1257 void drm_plane_cleanup(struct drm_plane *plane)
1259 struct drm_device *dev = plane->dev;
1261 drm_modeset_lock_all(dev);
1262 kfree(plane->format_types);
1263 drm_mode_object_put(dev, &plane->base);
1265 BUG_ON(list_empty(&plane->head));
1267 list_del(&plane->head);
1268 dev->mode_config.num_total_plane--;
1269 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1270 dev->mode_config.num_overlay_plane--;
1271 drm_modeset_unlock_all(dev);
1273 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1274 if (plane->state && plane->funcs->atomic_destroy_state)
1275 plane->funcs->atomic_destroy_state(plane, plane->state);
1277 memset(plane, 0, sizeof(*plane));
1279 EXPORT_SYMBOL(drm_plane_cleanup);
1282 * drm_plane_index - find the index of a registered plane
1283 * @plane: plane to find index for
1285 * Given a registered plane, return the index of that CRTC within a DRM
1286 * device's list of planes.
1288 unsigned int drm_plane_index(struct drm_plane *plane)
1290 unsigned int index = 0;
1291 struct drm_plane *tmp;
1293 drm_for_each_plane(tmp, plane->dev) {
1302 EXPORT_SYMBOL(drm_plane_index);
1305 * drm_plane_from_index - find the registered plane at an index
1307 * @idx: index of registered plane to find for
1309 * Given a plane index, return the registered plane from DRM device's
1310 * list of planes with matching index.
1313 drm_plane_from_index(struct drm_device *dev, int idx)
1315 struct drm_plane *plane;
1318 drm_for_each_plane(plane, dev) {
1325 EXPORT_SYMBOL(drm_plane_from_index);
1328 * drm_plane_force_disable - Forcibly disable a plane
1329 * @plane: plane to disable
1331 * Forces the plane to be disabled.
1333 * Used when the plane's current framebuffer is destroyed,
1334 * and when restoring fbdev mode.
1336 void drm_plane_force_disable(struct drm_plane *plane)
1343 plane->old_fb = plane->fb;
1344 ret = plane->funcs->disable_plane(plane);
1346 DRM_ERROR("failed to disable plane with busy fb\n");
1347 plane->old_fb = NULL;
1350 /* disconnect the plane from the fb and crtc: */
1351 drm_framebuffer_unreference(plane->old_fb);
1352 plane->old_fb = NULL;
1356 EXPORT_SYMBOL(drm_plane_force_disable);
1358 static int drm_mode_create_standard_properties(struct drm_device *dev)
1360 struct drm_property *prop;
1363 * Standard properties (apply to all connectors)
1365 prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1366 DRM_MODE_PROP_IMMUTABLE,
1370 dev->mode_config.edid_property = prop;
1372 prop = drm_property_create_enum(dev, 0,
1373 "DPMS", drm_dpms_enum_list,
1374 ARRAY_SIZE(drm_dpms_enum_list));
1377 dev->mode_config.dpms_property = prop;
1379 prop = drm_property_create(dev,
1380 DRM_MODE_PROP_BLOB |
1381 DRM_MODE_PROP_IMMUTABLE,
1385 dev->mode_config.path_property = prop;
1387 prop = drm_property_create(dev,
1388 DRM_MODE_PROP_BLOB |
1389 DRM_MODE_PROP_IMMUTABLE,
1393 dev->mode_config.tile_property = prop;
1395 prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1396 "type", drm_plane_type_enum_list,
1397 ARRAY_SIZE(drm_plane_type_enum_list));
1400 dev->mode_config.plane_type_property = prop;
1402 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1403 "SRC_X", 0, UINT_MAX);
1406 dev->mode_config.prop_src_x = prop;
1408 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1409 "SRC_Y", 0, UINT_MAX);
1412 dev->mode_config.prop_src_y = prop;
1414 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1415 "SRC_W", 0, UINT_MAX);
1418 dev->mode_config.prop_src_w = prop;
1420 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1421 "SRC_H", 0, UINT_MAX);
1424 dev->mode_config.prop_src_h = prop;
1426 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1427 "CRTC_X", INT_MIN, INT_MAX);
1430 dev->mode_config.prop_crtc_x = prop;
1432 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1433 "CRTC_Y", INT_MIN, INT_MAX);
1436 dev->mode_config.prop_crtc_y = prop;
1438 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1439 "CRTC_W", 0, INT_MAX);
1442 dev->mode_config.prop_crtc_w = prop;
1444 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1445 "CRTC_H", 0, INT_MAX);
1448 dev->mode_config.prop_crtc_h = prop;
1450 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1451 "FB_ID", DRM_MODE_OBJECT_FB);
1454 dev->mode_config.prop_fb_id = prop;
1456 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1457 "CRTC_ID", DRM_MODE_OBJECT_CRTC);
1460 dev->mode_config.prop_crtc_id = prop;
1462 prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
1466 dev->mode_config.prop_active = prop;
1468 prop = drm_property_create(dev,
1469 DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB,
1473 dev->mode_config.prop_mode_id = prop;
1479 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1482 * Called by a driver the first time a DVI-I connector is made.
1484 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1486 struct drm_property *dvi_i_selector;
1487 struct drm_property *dvi_i_subconnector;
1489 if (dev->mode_config.dvi_i_select_subconnector_property)
1493 drm_property_create_enum(dev, 0,
1494 "select subconnector",
1495 drm_dvi_i_select_enum_list,
1496 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1497 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1499 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1501 drm_dvi_i_subconnector_enum_list,
1502 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1503 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1507 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1510 * drm_create_tv_properties - create TV specific connector properties
1512 * @num_modes: number of different TV formats (modes) supported
1513 * @modes: array of pointers to strings containing name of each format
1515 * Called by a driver's TV initialization routine, this function creates
1516 * the TV specific connector properties for a given device. Caller is
1517 * responsible for allocating a list of format names and passing them to
1520 int drm_mode_create_tv_properties(struct drm_device *dev,
1521 unsigned int num_modes,
1524 struct drm_property *tv_selector;
1525 struct drm_property *tv_subconnector;
1528 if (dev->mode_config.tv_select_subconnector_property)
1532 * Basic connector properties
1534 tv_selector = drm_property_create_enum(dev, 0,
1535 "select subconnector",
1536 drm_tv_select_enum_list,
1537 ARRAY_SIZE(drm_tv_select_enum_list));
1538 dev->mode_config.tv_select_subconnector_property = tv_selector;
1541 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1543 drm_tv_subconnector_enum_list,
1544 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1545 dev->mode_config.tv_subconnector_property = tv_subconnector;
1548 * Other, TV specific properties: margins & TV modes.
1550 dev->mode_config.tv_left_margin_property =
1551 drm_property_create_range(dev, 0, "left margin", 0, 100);
1553 dev->mode_config.tv_right_margin_property =
1554 drm_property_create_range(dev, 0, "right margin", 0, 100);
1556 dev->mode_config.tv_top_margin_property =
1557 drm_property_create_range(dev, 0, "top margin", 0, 100);
1559 dev->mode_config.tv_bottom_margin_property =
1560 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1562 dev->mode_config.tv_mode_property =
1563 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1565 for (i = 0; i < num_modes; i++)
1566 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1569 dev->mode_config.tv_brightness_property =
1570 drm_property_create_range(dev, 0, "brightness", 0, 100);
1572 dev->mode_config.tv_contrast_property =
1573 drm_property_create_range(dev, 0, "contrast", 0, 100);
1575 dev->mode_config.tv_flicker_reduction_property =
1576 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1578 dev->mode_config.tv_overscan_property =
1579 drm_property_create_range(dev, 0, "overscan", 0, 100);
1581 dev->mode_config.tv_saturation_property =
1582 drm_property_create_range(dev, 0, "saturation", 0, 100);
1584 dev->mode_config.tv_hue_property =
1585 drm_property_create_range(dev, 0, "hue", 0, 100);
1589 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1592 * drm_mode_create_scaling_mode_property - create scaling mode property
1595 * Called by a driver the first time it's needed, must be attached to desired
1598 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1600 struct drm_property *scaling_mode;
1602 if (dev->mode_config.scaling_mode_property)
1606 drm_property_create_enum(dev, 0, "scaling mode",
1607 drm_scaling_mode_enum_list,
1608 ARRAY_SIZE(drm_scaling_mode_enum_list));
1610 dev->mode_config.scaling_mode_property = scaling_mode;
1614 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1617 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1620 * Called by a driver the first time it's needed, must be attached to desired
1624 * Zero on success, negative errno on failure.
1626 int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1628 if (dev->mode_config.aspect_ratio_property)
1631 dev->mode_config.aspect_ratio_property =
1632 drm_property_create_enum(dev, 0, "aspect ratio",
1633 drm_aspect_ratio_enum_list,
1634 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1636 if (dev->mode_config.aspect_ratio_property == NULL)
1641 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1644 * drm_mode_create_dirty_property - create dirty property
1647 * Called by a driver the first time it's needed, must be attached to desired
1650 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1652 struct drm_property *dirty_info;
1654 if (dev->mode_config.dirty_info_property)
1658 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1660 drm_dirty_info_enum_list,
1661 ARRAY_SIZE(drm_dirty_info_enum_list));
1662 dev->mode_config.dirty_info_property = dirty_info;
1666 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1669 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1672 * Create the the suggested x/y offset property for connectors.
1674 int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1676 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1679 dev->mode_config.suggested_x_property =
1680 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1682 dev->mode_config.suggested_y_property =
1683 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1685 if (dev->mode_config.suggested_x_property == NULL ||
1686 dev->mode_config.suggested_y_property == NULL)
1690 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1693 * drm_mode_getresources - get graphics configuration
1694 * @dev: drm device for the ioctl
1695 * @data: data pointer for the ioctl
1696 * @file_priv: drm file for the ioctl call
1698 * Construct a set of configuration description structures and return
1699 * them to the user, including CRTC, connector and framebuffer configuration.
1701 * Called by the user via ioctl.
1704 * Zero on success, negative errno on failure.
1706 int drm_mode_getresources(struct drm_device *dev, void *data,
1707 struct drm_file *file_priv)
1709 struct drm_mode_card_res *card_res = data;
1710 struct list_head *lh;
1711 struct drm_framebuffer *fb;
1712 struct drm_connector *connector;
1713 struct drm_crtc *crtc;
1714 struct drm_encoder *encoder;
1716 int connector_count = 0;
1719 int encoder_count = 0;
1721 uint32_t __user *fb_id;
1722 uint32_t __user *crtc_id;
1723 uint32_t __user *connector_id;
1724 uint32_t __user *encoder_id;
1726 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1730 mutex_lock(&file_priv->fbs_lock);
1732 * For the non-control nodes we need to limit the list of resources
1733 * by IDs in the group list for this node
1735 list_for_each(lh, &file_priv->fbs)
1738 /* handle this in 4 parts */
1740 if (card_res->count_fbs >= fb_count) {
1742 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1743 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1744 if (put_user(fb->base.id, fb_id + copied)) {
1745 mutex_unlock(&file_priv->fbs_lock);
1751 card_res->count_fbs = fb_count;
1752 mutex_unlock(&file_priv->fbs_lock);
1754 /* mode_config.mutex protects the connector list against e.g. DP MST
1755 * connector hot-adding. CRTC/Plane lists are invariant. */
1756 mutex_lock(&dev->mode_config.mutex);
1757 drm_for_each_crtc(crtc, dev)
1760 drm_for_each_connector(connector, dev)
1763 drm_for_each_encoder(encoder, dev)
1766 card_res->max_height = dev->mode_config.max_height;
1767 card_res->min_height = dev->mode_config.min_height;
1768 card_res->max_width = dev->mode_config.max_width;
1769 card_res->min_width = dev->mode_config.min_width;
1772 if (card_res->count_crtcs >= crtc_count) {
1774 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1775 drm_for_each_crtc(crtc, dev) {
1776 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1777 if (put_user(crtc->base.id, crtc_id + copied)) {
1784 card_res->count_crtcs = crtc_count;
1787 if (card_res->count_encoders >= encoder_count) {
1789 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1790 drm_for_each_encoder(encoder, dev) {
1791 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1793 if (put_user(encoder->base.id, encoder_id +
1801 card_res->count_encoders = encoder_count;
1804 if (card_res->count_connectors >= connector_count) {
1806 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1807 drm_for_each_connector(connector, dev) {
1808 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1811 if (put_user(connector->base.id,
1812 connector_id + copied)) {
1819 card_res->count_connectors = connector_count;
1821 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1822 card_res->count_connectors, card_res->count_encoders);
1825 mutex_unlock(&dev->mode_config.mutex);
1830 * drm_mode_getcrtc - get CRTC configuration
1831 * @dev: drm device for the ioctl
1832 * @data: data pointer for the ioctl
1833 * @file_priv: drm file for the ioctl call
1835 * Construct a CRTC configuration structure to return to the user.
1837 * Called by the user via ioctl.
1840 * Zero on success, negative errno on failure.
1842 int drm_mode_getcrtc(struct drm_device *dev,
1843 void *data, struct drm_file *file_priv)
1845 struct drm_mode_crtc *crtc_resp = data;
1846 struct drm_crtc *crtc;
1848 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1851 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
1855 drm_modeset_lock_crtc(crtc, crtc->primary);
1856 crtc_resp->gamma_size = crtc->gamma_size;
1857 if (crtc->primary->fb)
1858 crtc_resp->fb_id = crtc->primary->fb->base.id;
1860 crtc_resp->fb_id = 0;
1863 crtc_resp->x = crtc->primary->state->src_x >> 16;
1864 crtc_resp->y = crtc->primary->state->src_y >> 16;
1865 if (crtc->state->enable) {
1866 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode);
1867 crtc_resp->mode_valid = 1;
1870 crtc_resp->mode_valid = 0;
1873 crtc_resp->x = crtc->x;
1874 crtc_resp->y = crtc->y;
1875 if (crtc->enabled) {
1876 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1877 crtc_resp->mode_valid = 1;
1880 crtc_resp->mode_valid = 0;
1883 drm_modeset_unlock_crtc(crtc);
1888 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1889 const struct drm_file *file_priv)
1892 * If user-space hasn't configured the driver to expose the stereo 3D
1893 * modes, don't expose them.
1895 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1901 static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
1903 /* For atomic drivers only state objects are synchronously updated and
1904 * protected by modeset locks, so check those first. */
1905 if (connector->state)
1906 return connector->state->best_encoder;
1907 return connector->encoder;
1910 /* helper for getconnector and getproperties ioctls */
1911 static int get_properties(struct drm_mode_object *obj, bool atomic,
1912 uint32_t __user *prop_ptr, uint64_t __user *prop_values,
1913 uint32_t *arg_count_props)
1918 props_count = obj->properties->count;
1920 props_count -= obj->properties->atomic_count;
1922 if ((*arg_count_props >= props_count) && props_count) {
1923 for (i = 0, copied = 0; copied < props_count; i++) {
1924 struct drm_property *prop = obj->properties->properties[i];
1927 if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
1930 ret = drm_object_property_get_value(obj, prop, &val);
1934 if (put_user(prop->base.id, prop_ptr + copied))
1937 if (put_user(val, prop_values + copied))
1943 *arg_count_props = props_count;
1949 * drm_mode_getconnector - get connector configuration
1950 * @dev: drm device for the ioctl
1951 * @data: data pointer for the ioctl
1952 * @file_priv: drm file for the ioctl call
1954 * Construct a connector configuration structure to return to the user.
1956 * Called by the user via ioctl.
1959 * Zero on success, negative errno on failure.
1961 int drm_mode_getconnector(struct drm_device *dev, void *data,
1962 struct drm_file *file_priv)
1964 struct drm_mode_get_connector *out_resp = data;
1965 struct drm_connector *connector;
1966 struct drm_encoder *encoder;
1967 struct drm_display_mode *mode;
1969 int encoders_count = 0;
1973 struct drm_mode_modeinfo u_mode;
1974 struct drm_mode_modeinfo __user *mode_ptr;
1975 uint32_t __user *encoder_ptr;
1977 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1980 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1982 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1984 mutex_lock(&dev->mode_config.mutex);
1986 connector = drm_connector_find(dev, out_resp->connector_id);
1992 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
1993 if (connector->encoder_ids[i] != 0)
1996 if (out_resp->count_modes == 0) {
1997 connector->funcs->fill_modes(connector,
1998 dev->mode_config.max_width,
1999 dev->mode_config.max_height);
2002 /* delayed so we get modes regardless of pre-fill_modes state */
2003 list_for_each_entry(mode, &connector->modes, head)
2004 if (drm_mode_expose_to_userspace(mode, file_priv))
2007 out_resp->connector_id = connector->base.id;
2008 out_resp->connector_type = connector->connector_type;
2009 out_resp->connector_type_id = connector->connector_type_id;
2010 out_resp->mm_width = connector->display_info.width_mm;
2011 out_resp->mm_height = connector->display_info.height_mm;
2012 out_resp->subpixel = connector->display_info.subpixel_order;
2013 out_resp->connection = connector->status;
2015 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2016 encoder = drm_connector_get_encoder(connector);
2018 out_resp->encoder_id = encoder->base.id;
2020 out_resp->encoder_id = 0;
2023 * This ioctl is called twice, once to determine how much space is
2024 * needed, and the 2nd time to fill it.
2026 if ((out_resp->count_modes >= mode_count) && mode_count) {
2028 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
2029 list_for_each_entry(mode, &connector->modes, head) {
2030 if (!drm_mode_expose_to_userspace(mode, file_priv))
2033 drm_mode_convert_to_umode(&u_mode, mode);
2034 if (copy_to_user(mode_ptr + copied,
2035 &u_mode, sizeof(u_mode))) {
2042 out_resp->count_modes = mode_count;
2044 ret = get_properties(&connector->base, file_priv->atomic,
2045 (uint32_t __user *)(unsigned long)(out_resp->props_ptr),
2046 (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr),
2047 &out_resp->count_props);
2051 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2053 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
2054 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2055 if (connector->encoder_ids[i] != 0) {
2056 if (put_user(connector->encoder_ids[i],
2057 encoder_ptr + copied)) {
2065 out_resp->count_encoders = encoders_count;
2068 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2071 mutex_unlock(&dev->mode_config.mutex);
2076 static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2078 struct drm_connector *connector;
2079 struct drm_device *dev = encoder->dev;
2080 bool uses_atomic = false;
2082 /* For atomic drivers only state objects are synchronously updated and
2083 * protected by modeset locks, so check those first. */
2084 drm_for_each_connector(connector, dev) {
2085 if (!connector->state)
2090 if (connector->state->best_encoder != encoder)
2093 return connector->state->crtc;
2096 /* Don't return stale data (e.g. pending async disable). */
2100 return encoder->crtc;
2104 * drm_mode_getencoder - get encoder configuration
2105 * @dev: drm device for the ioctl
2106 * @data: data pointer for the ioctl
2107 * @file_priv: drm file for the ioctl call
2109 * Construct a encoder configuration structure to return to the user.
2111 * Called by the user via ioctl.
2114 * Zero on success, negative errno on failure.
2116 int drm_mode_getencoder(struct drm_device *dev, void *data,
2117 struct drm_file *file_priv)
2119 struct drm_mode_get_encoder *enc_resp = data;
2120 struct drm_encoder *encoder;
2121 struct drm_crtc *crtc;
2123 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2126 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
2130 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2131 crtc = drm_encoder_get_crtc(encoder);
2133 enc_resp->crtc_id = crtc->base.id;
2135 enc_resp->crtc_id = 0;
2136 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2138 enc_resp->encoder_type = encoder->encoder_type;
2139 enc_resp->encoder_id = encoder->base.id;
2140 enc_resp->possible_crtcs = encoder->possible_crtcs;
2141 enc_resp->possible_clones = encoder->possible_clones;
2147 * drm_mode_getplane_res - enumerate all plane resources
2150 * @file_priv: DRM file info
2152 * Construct a list of plane ids to return to the user.
2154 * Called by the user via ioctl.
2157 * Zero on success, negative errno on failure.
2159 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2160 struct drm_file *file_priv)
2162 struct drm_mode_get_plane_res *plane_resp = data;
2163 struct drm_mode_config *config;
2164 struct drm_plane *plane;
2165 uint32_t __user *plane_ptr;
2167 unsigned num_planes;
2169 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2172 config = &dev->mode_config;
2174 if (file_priv->universal_planes)
2175 num_planes = config->num_total_plane;
2177 num_planes = config->num_overlay_plane;
2180 * This ioctl is called twice, once to determine how much space is
2181 * needed, and the 2nd time to fill it.
2184 (plane_resp->count_planes >= num_planes)) {
2185 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2187 /* Plane lists are invariant, no locking needed. */
2188 drm_for_each_plane(plane, dev) {
2190 * Unless userspace set the 'universal planes'
2191 * capability bit, only advertise overlays.
2193 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2194 !file_priv->universal_planes)
2197 if (put_user(plane->base.id, plane_ptr + copied))
2202 plane_resp->count_planes = num_planes;
2208 * drm_mode_getplane - get plane configuration
2211 * @file_priv: DRM file info
2213 * Construct a plane configuration structure to return to the user.
2215 * Called by the user via ioctl.
2218 * Zero on success, negative errno on failure.
2220 int drm_mode_getplane(struct drm_device *dev, void *data,
2221 struct drm_file *file_priv)
2223 struct drm_mode_get_plane *plane_resp = data;
2224 struct drm_plane *plane;
2225 uint32_t __user *format_ptr;
2227 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2230 plane = drm_plane_find(dev, plane_resp->plane_id);
2234 drm_modeset_lock(&plane->mutex, NULL);
2236 plane_resp->crtc_id = plane->crtc->base.id;
2238 plane_resp->crtc_id = 0;
2241 plane_resp->fb_id = plane->fb->base.id;
2243 plane_resp->fb_id = 0;
2244 drm_modeset_unlock(&plane->mutex);
2246 plane_resp->plane_id = plane->base.id;
2247 plane_resp->possible_crtcs = plane->possible_crtcs;
2248 plane_resp->gamma_size = 0;
2251 * This ioctl is called twice, once to determine how much space is
2252 * needed, and the 2nd time to fill it.
2254 if (plane->format_count &&
2255 (plane_resp->count_format_types >= plane->format_count)) {
2256 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2257 if (copy_to_user(format_ptr,
2258 plane->format_types,
2259 sizeof(uint32_t) * plane->format_count)) {
2263 plane_resp->count_format_types = plane->format_count;
2269 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2270 * @plane: plane to check for format support
2271 * @format: the pixel format
2274 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2277 int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format)
2281 for (i = 0; i < plane->format_count; i++) {
2282 if (format == plane->format_types[i])
2290 * setplane_internal - setplane handler for internal callers
2292 * Note that we assume an extra reference has already been taken on fb. If the
2293 * update fails, this reference will be dropped before return; if it succeeds,
2294 * the previous framebuffer (if any) will be unreferenced instead.
2296 * src_{x,y,w,h} are provided in 16.16 fixed point format
2298 static int __setplane_internal(struct drm_plane *plane,
2299 struct drm_crtc *crtc,
2300 struct drm_framebuffer *fb,
2301 int32_t crtc_x, int32_t crtc_y,
2302 uint32_t crtc_w, uint32_t crtc_h,
2303 /* src_{x,y,w,h} values are 16.16 fixed point */
2304 uint32_t src_x, uint32_t src_y,
2305 uint32_t src_w, uint32_t src_h)
2308 unsigned int fb_width, fb_height;
2310 /* No fb means shut it down */
2312 plane->old_fb = plane->fb;
2313 ret = plane->funcs->disable_plane(plane);
2318 plane->old_fb = NULL;
2323 /* Check whether this plane is usable on this CRTC */
2324 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2325 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2330 /* Check whether this plane supports the fb pixel format. */
2331 ret = drm_plane_check_pixel_format(plane, fb->pixel_format);
2333 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2334 drm_get_format_name(fb->pixel_format));
2338 /* Give drivers some help against integer overflows */
2339 if (crtc_w > INT_MAX ||
2340 crtc_x > INT_MAX - (int32_t) crtc_w ||
2342 crtc_y > INT_MAX - (int32_t) crtc_h) {
2343 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2344 crtc_w, crtc_h, crtc_x, crtc_y);
2349 fb_width = fb->width << 16;
2350 fb_height = fb->height << 16;
2352 /* Make sure source coordinates are inside the fb. */
2353 if (src_w > fb_width ||
2354 src_x > fb_width - src_w ||
2355 src_h > fb_height ||
2356 src_y > fb_height - src_h) {
2357 DRM_DEBUG_KMS("Invalid source coordinates "
2358 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2359 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2360 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2361 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2362 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2367 plane->old_fb = plane->fb;
2368 ret = plane->funcs->update_plane(plane, crtc, fb,
2369 crtc_x, crtc_y, crtc_w, crtc_h,
2370 src_x, src_y, src_w, src_h);
2376 plane->old_fb = NULL;
2381 drm_framebuffer_unreference(fb);
2383 drm_framebuffer_unreference(plane->old_fb);
2384 plane->old_fb = NULL;
2389 static int setplane_internal(struct drm_plane *plane,
2390 struct drm_crtc *crtc,
2391 struct drm_framebuffer *fb,
2392 int32_t crtc_x, int32_t crtc_y,
2393 uint32_t crtc_w, uint32_t crtc_h,
2394 /* src_{x,y,w,h} values are 16.16 fixed point */
2395 uint32_t src_x, uint32_t src_y,
2396 uint32_t src_w, uint32_t src_h)
2400 drm_modeset_lock_all(plane->dev);
2401 ret = __setplane_internal(plane, crtc, fb,
2402 crtc_x, crtc_y, crtc_w, crtc_h,
2403 src_x, src_y, src_w, src_h);
2404 drm_modeset_unlock_all(plane->dev);
2410 * drm_mode_setplane - configure a plane's configuration
2412 * @data: ioctl data*
2413 * @file_priv: DRM file info
2415 * Set plane configuration, including placement, fb, scaling, and other factors.
2416 * Or pass a NULL fb to disable (planes may be disabled without providing a
2420 * Zero on success, negative errno on failure.
2422 int drm_mode_setplane(struct drm_device *dev, void *data,
2423 struct drm_file *file_priv)
2425 struct drm_mode_set_plane *plane_req = data;
2426 struct drm_plane *plane;
2427 struct drm_crtc *crtc = NULL;
2428 struct drm_framebuffer *fb = NULL;
2430 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2434 * First, find the plane, crtc, and fb objects. If not available,
2435 * we don't bother to call the driver.
2437 plane = drm_plane_find(dev, plane_req->plane_id);
2439 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2440 plane_req->plane_id);
2444 if (plane_req->fb_id) {
2445 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2447 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2452 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2454 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2455 plane_req->crtc_id);
2461 * setplane_internal will take care of deref'ing either the old or new
2462 * framebuffer depending on success.
2464 return setplane_internal(plane, crtc, fb,
2465 plane_req->crtc_x, plane_req->crtc_y,
2466 plane_req->crtc_w, plane_req->crtc_h,
2467 plane_req->src_x, plane_req->src_y,
2468 plane_req->src_w, plane_req->src_h);
2472 * drm_mode_set_config_internal - helper to call ->set_config
2473 * @set: modeset config to set
2475 * This is a little helper to wrap internal calls to the ->set_config driver
2476 * interface. The only thing it adds is correct refcounting dance.
2479 * Zero on success, negative errno on failure.
2481 int drm_mode_set_config_internal(struct drm_mode_set *set)
2483 struct drm_crtc *crtc = set->crtc;
2484 struct drm_framebuffer *fb;
2485 struct drm_crtc *tmp;
2489 * NOTE: ->set_config can also disable other crtcs (if we steal all
2490 * connectors from it), hence we need to refcount the fbs across all
2491 * crtcs. Atomic modeset will have saner semantics ...
2493 drm_for_each_crtc(tmp, crtc->dev)
2494 tmp->primary->old_fb = tmp->primary->fb;
2498 ret = crtc->funcs->set_config(set);
2500 crtc->primary->crtc = crtc;
2501 crtc->primary->fb = fb;
2504 drm_for_each_crtc(tmp, crtc->dev) {
2505 if (tmp->primary->fb)
2506 drm_framebuffer_reference(tmp->primary->fb);
2507 if (tmp->primary->old_fb)
2508 drm_framebuffer_unreference(tmp->primary->old_fb);
2509 tmp->primary->old_fb = NULL;
2514 EXPORT_SYMBOL(drm_mode_set_config_internal);
2517 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2518 * @mode: mode to query
2519 * @hdisplay: hdisplay value to fill in
2520 * @vdisplay: vdisplay value to fill in
2522 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2523 * the appropriate layout.
2525 void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
2526 int *hdisplay, int *vdisplay)
2528 struct drm_display_mode adjusted;
2530 drm_mode_copy(&adjusted, mode);
2531 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
2532 *hdisplay = adjusted.crtc_hdisplay;
2533 *vdisplay = adjusted.crtc_vdisplay;
2535 EXPORT_SYMBOL(drm_crtc_get_hv_timing);
2538 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2540 * @crtc: CRTC that framebuffer will be displayed on
2543 * @mode: mode that framebuffer will be displayed under
2544 * @fb: framebuffer to check size of
2546 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2548 const struct drm_display_mode *mode,
2549 const struct drm_framebuffer *fb)
2552 int hdisplay, vdisplay;
2554 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
2556 if (crtc->invert_dimensions)
2557 swap(hdisplay, vdisplay);
2559 if (hdisplay > fb->width ||
2560 vdisplay > fb->height ||
2561 x > fb->width - hdisplay ||
2562 y > fb->height - vdisplay) {
2563 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2564 fb->width, fb->height, hdisplay, vdisplay, x, y,
2565 crtc->invert_dimensions ? " (inverted)" : "");
2571 EXPORT_SYMBOL(drm_crtc_check_viewport);
2574 * drm_mode_setcrtc - set CRTC configuration
2575 * @dev: drm device for the ioctl
2576 * @data: data pointer for the ioctl
2577 * @file_priv: drm file for the ioctl call
2579 * Build a new CRTC configuration based on user request.
2581 * Called by the user via ioctl.
2584 * Zero on success, negative errno on failure.
2586 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2587 struct drm_file *file_priv)
2589 struct drm_mode_config *config = &dev->mode_config;
2590 struct drm_mode_crtc *crtc_req = data;
2591 struct drm_crtc *crtc;
2592 struct drm_connector **connector_set = NULL, *connector;
2593 struct drm_framebuffer *fb = NULL;
2594 struct drm_display_mode *mode = NULL;
2595 struct drm_mode_set set;
2596 uint32_t __user *set_connectors_ptr;
2600 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2604 * Universal plane src offsets are only 16.16, prevent havoc for
2605 * drivers using universal plane code internally.
2607 if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000)
2610 drm_modeset_lock_all(dev);
2611 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2613 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2617 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2619 if (crtc_req->mode_valid) {
2620 /* If we have a mode we need a framebuffer. */
2621 /* If we pass -1, set the mode with the currently bound fb */
2622 if (crtc_req->fb_id == -1) {
2623 if (!crtc->primary->fb) {
2624 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2628 fb = crtc->primary->fb;
2629 /* Make refcounting symmetric with the lookup path. */
2630 drm_framebuffer_reference(fb);
2632 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2634 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2641 mode = drm_mode_create(dev);
2647 ret = drm_mode_convert_umode(mode, &crtc_req->mode);
2649 DRM_DEBUG_KMS("Invalid mode\n");
2653 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2656 * Check whether the primary plane supports the fb pixel format.
2657 * Drivers not implementing the universal planes API use a
2658 * default formats list provided by the DRM core which doesn't
2659 * match real hardware capabilities. Skip the check in that
2662 if (!crtc->primary->format_default) {
2663 ret = drm_plane_check_pixel_format(crtc->primary,
2666 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2667 drm_get_format_name(fb->pixel_format));
2672 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2679 if (crtc_req->count_connectors == 0 && mode) {
2680 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2685 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2686 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2687 crtc_req->count_connectors);
2692 if (crtc_req->count_connectors > 0) {
2695 /* Avoid unbounded kernel memory allocation */
2696 if (crtc_req->count_connectors > config->num_connector) {
2701 connector_set = kmalloc_array(crtc_req->count_connectors,
2702 sizeof(struct drm_connector *),
2704 if (!connector_set) {
2709 for (i = 0; i < crtc_req->count_connectors; i++) {
2710 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2711 if (get_user(out_id, &set_connectors_ptr[i])) {
2716 connector = drm_connector_find(dev, out_id);
2718 DRM_DEBUG_KMS("Connector id %d unknown\n",
2723 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2727 connector_set[i] = connector;
2732 set.x = crtc_req->x;
2733 set.y = crtc_req->y;
2735 set.connectors = connector_set;
2736 set.num_connectors = crtc_req->count_connectors;
2738 ret = drm_mode_set_config_internal(&set);
2742 drm_framebuffer_unreference(fb);
2744 kfree(connector_set);
2745 drm_mode_destroy(dev, mode);
2746 drm_modeset_unlock_all(dev);
2751 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2752 * universal plane handler call
2753 * @crtc: crtc to update cursor for
2754 * @req: data pointer for the ioctl
2755 * @file_priv: drm file for the ioctl call
2757 * Legacy cursor ioctl's work directly with driver buffer handles. To
2758 * translate legacy ioctl calls into universal plane handler calls, we need to
2759 * wrap the native buffer handle in a drm_framebuffer.
2761 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2762 * buffer with a pitch of 4*width; the universal plane interface should be used
2763 * directly in cases where the hardware can support other buffer settings and
2764 * userspace wants to make use of these capabilities.
2767 * Zero on success, negative errno on failure.
2769 static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2770 struct drm_mode_cursor2 *req,
2771 struct drm_file *file_priv)
2773 struct drm_device *dev = crtc->dev;
2774 struct drm_framebuffer *fb = NULL;
2775 struct drm_mode_fb_cmd2 fbreq = {
2776 .width = req->width,
2777 .height = req->height,
2778 .pixel_format = DRM_FORMAT_ARGB8888,
2779 .pitches = { req->width * 4 },
2780 .handles = { req->handle },
2782 int32_t crtc_x, crtc_y;
2783 uint32_t crtc_w = 0, crtc_h = 0;
2784 uint32_t src_w = 0, src_h = 0;
2787 BUG_ON(!crtc->cursor);
2788 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
2791 * Obtain fb we'll be using (either new or existing) and take an extra
2792 * reference to it if fb != null. setplane will take care of dropping
2793 * the reference if the plane update fails.
2795 if (req->flags & DRM_MODE_CURSOR_BO) {
2797 fb = internal_framebuffer_create(dev, &fbreq, file_priv);
2799 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2806 fb = crtc->cursor->fb;
2808 drm_framebuffer_reference(fb);
2811 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2815 crtc_x = crtc->cursor_x;
2816 crtc_y = crtc->cursor_y;
2821 crtc_h = fb->height;
2822 src_w = fb->width << 16;
2823 src_h = fb->height << 16;
2827 * setplane_internal will take care of deref'ing either the old or new
2828 * framebuffer depending on success.
2830 ret = __setplane_internal(crtc->cursor, crtc, fb,
2831 crtc_x, crtc_y, crtc_w, crtc_h,
2832 0, 0, src_w, src_h);
2834 /* Update successful; save new cursor position, if necessary */
2835 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2836 crtc->cursor_x = req->x;
2837 crtc->cursor_y = req->y;
2843 static int drm_mode_cursor_common(struct drm_device *dev,
2844 struct drm_mode_cursor2 *req,
2845 struct drm_file *file_priv)
2847 struct drm_crtc *crtc;
2850 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2853 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2856 crtc = drm_crtc_find(dev, req->crtc_id);
2858 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2863 * If this crtc has a universal cursor plane, call that plane's update
2864 * handler rather than using legacy cursor handlers.
2866 drm_modeset_lock_crtc(crtc, crtc->cursor);
2868 ret = drm_mode_cursor_universal(crtc, req, file_priv);
2872 if (req->flags & DRM_MODE_CURSOR_BO) {
2873 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
2877 /* Turns off the cursor if handle is 0 */
2878 if (crtc->funcs->cursor_set2)
2879 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2880 req->width, req->height, req->hot_x, req->hot_y);
2882 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2883 req->width, req->height);
2886 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2887 if (crtc->funcs->cursor_move) {
2888 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2895 drm_modeset_unlock_crtc(crtc);
2903 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2904 * @dev: drm device for the ioctl
2905 * @data: data pointer for the ioctl
2906 * @file_priv: drm file for the ioctl call
2908 * Set the cursor configuration based on user request.
2910 * Called by the user via ioctl.
2913 * Zero on success, negative errno on failure.
2915 int drm_mode_cursor_ioctl(struct drm_device *dev,
2916 void *data, struct drm_file *file_priv)
2918 struct drm_mode_cursor *req = data;
2919 struct drm_mode_cursor2 new_req;
2921 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2922 new_req.hot_x = new_req.hot_y = 0;
2924 return drm_mode_cursor_common(dev, &new_req, file_priv);
2928 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2929 * @dev: drm device for the ioctl
2930 * @data: data pointer for the ioctl
2931 * @file_priv: drm file for the ioctl call
2933 * Set the cursor configuration based on user request. This implements the 2nd
2934 * version of the cursor ioctl, which allows userspace to additionally specify
2935 * the hotspot of the pointer.
2937 * Called by the user via ioctl.
2940 * Zero on success, negative errno on failure.
2942 int drm_mode_cursor2_ioctl(struct drm_device *dev,
2943 void *data, struct drm_file *file_priv)
2945 struct drm_mode_cursor2 *req = data;
2947 return drm_mode_cursor_common(dev, req, file_priv);
2951 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2952 * @bpp: bits per pixels
2953 * @depth: bit depth per pixel
2955 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2956 * Useful in fbdev emulation code, since that deals in those values.
2958 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2964 fmt = DRM_FORMAT_C8;
2968 fmt = DRM_FORMAT_XRGB1555;
2970 fmt = DRM_FORMAT_RGB565;
2973 fmt = DRM_FORMAT_RGB888;
2977 fmt = DRM_FORMAT_XRGB8888;
2978 else if (depth == 30)
2979 fmt = DRM_FORMAT_XRGB2101010;
2981 fmt = DRM_FORMAT_ARGB8888;
2984 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2985 fmt = DRM_FORMAT_XRGB8888;
2991 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
2994 * drm_mode_addfb - add an FB to the graphics configuration
2995 * @dev: drm device for the ioctl
2996 * @data: data pointer for the ioctl
2997 * @file_priv: drm file for the ioctl call
2999 * Add a new FB to the specified CRTC, given a user request. This is the
3000 * original addfb ioctl which only supported RGB formats.
3002 * Called by the user via ioctl.
3005 * Zero on success, negative errno on failure.
3007 int drm_mode_addfb(struct drm_device *dev,
3008 void *data, struct drm_file *file_priv)
3010 struct drm_mode_fb_cmd *or = data;
3011 struct drm_mode_fb_cmd2 r = {};
3014 /* convert to new format and call new ioctl */
3015 r.fb_id = or->fb_id;
3016 r.width = or->width;
3017 r.height = or->height;
3018 r.pitches[0] = or->pitch;
3019 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3020 r.handles[0] = or->handle;
3022 ret = drm_mode_addfb2(dev, &r, file_priv);
3026 or->fb_id = r.fb_id;
3031 static int format_check(const struct drm_mode_fb_cmd2 *r)
3033 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3037 case DRM_FORMAT_RGB332:
3038 case DRM_FORMAT_BGR233:
3039 case DRM_FORMAT_XRGB4444:
3040 case DRM_FORMAT_XBGR4444:
3041 case DRM_FORMAT_RGBX4444:
3042 case DRM_FORMAT_BGRX4444:
3043 case DRM_FORMAT_ARGB4444:
3044 case DRM_FORMAT_ABGR4444:
3045 case DRM_FORMAT_RGBA4444:
3046 case DRM_FORMAT_BGRA4444:
3047 case DRM_FORMAT_XRGB1555:
3048 case DRM_FORMAT_XBGR1555:
3049 case DRM_FORMAT_RGBX5551:
3050 case DRM_FORMAT_BGRX5551:
3051 case DRM_FORMAT_ARGB1555:
3052 case DRM_FORMAT_ABGR1555:
3053 case DRM_FORMAT_RGBA5551:
3054 case DRM_FORMAT_BGRA5551:
3055 case DRM_FORMAT_RGB565:
3056 case DRM_FORMAT_BGR565:
3057 case DRM_FORMAT_RGB888:
3058 case DRM_FORMAT_BGR888:
3059 case DRM_FORMAT_XRGB8888:
3060 case DRM_FORMAT_XBGR8888:
3061 case DRM_FORMAT_RGBX8888:
3062 case DRM_FORMAT_BGRX8888:
3063 case DRM_FORMAT_ARGB8888:
3064 case DRM_FORMAT_ABGR8888:
3065 case DRM_FORMAT_RGBA8888:
3066 case DRM_FORMAT_BGRA8888:
3067 case DRM_FORMAT_XRGB2101010:
3068 case DRM_FORMAT_XBGR2101010:
3069 case DRM_FORMAT_RGBX1010102:
3070 case DRM_FORMAT_BGRX1010102:
3071 case DRM_FORMAT_ARGB2101010:
3072 case DRM_FORMAT_ABGR2101010:
3073 case DRM_FORMAT_RGBA1010102:
3074 case DRM_FORMAT_BGRA1010102:
3075 case DRM_FORMAT_YUYV:
3076 case DRM_FORMAT_YVYU:
3077 case DRM_FORMAT_UYVY:
3078 case DRM_FORMAT_VYUY:
3079 case DRM_FORMAT_AYUV:
3080 case DRM_FORMAT_NV12:
3081 case DRM_FORMAT_NV21:
3082 case DRM_FORMAT_NV16:
3083 case DRM_FORMAT_NV61:
3084 case DRM_FORMAT_NV24:
3085 case DRM_FORMAT_NV42:
3086 case DRM_FORMAT_YUV410:
3087 case DRM_FORMAT_YVU410:
3088 case DRM_FORMAT_YUV411:
3089 case DRM_FORMAT_YVU411:
3090 case DRM_FORMAT_YUV420:
3091 case DRM_FORMAT_YVU420:
3092 case DRM_FORMAT_YUV422:
3093 case DRM_FORMAT_YVU422:
3094 case DRM_FORMAT_YUV444:
3095 case DRM_FORMAT_YVU444:
3098 DRM_DEBUG_KMS("invalid pixel format %s\n",
3099 drm_get_format_name(r->pixel_format));
3104 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
3106 int ret, hsub, vsub, num_planes, i;
3108 ret = format_check(r);
3110 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3111 drm_get_format_name(r->pixel_format));
3115 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3116 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3117 num_planes = drm_format_num_planes(r->pixel_format);
3119 if (r->width == 0 || r->width % hsub) {
3120 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
3124 if (r->height == 0 || r->height % vsub) {
3125 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
3129 for (i = 0; i < num_planes; i++) {
3130 unsigned int width = r->width / (i != 0 ? hsub : 1);
3131 unsigned int height = r->height / (i != 0 ? vsub : 1);
3132 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
3134 if (!r->handles[i]) {
3135 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
3139 if ((uint64_t) width * cpp > UINT_MAX)
3142 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3145 if (r->pitches[i] < width * cpp) {
3146 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
3150 if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
3151 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3156 /* modifier specific checks: */
3157 switch (r->modifier[i]) {
3158 case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE:
3159 /* NOTE: the pitch restriction may be lifted later if it turns
3160 * out that no hw has this restriction:
3162 if (r->pixel_format != DRM_FORMAT_NV12 ||
3163 width % 128 || height % 32 ||
3164 r->pitches[i] % 128) {
3165 DRM_DEBUG_KMS("bad modifier data for plane %d\n", i);
3175 for (i = num_planes; i < 4; i++) {
3176 if (r->modifier[i]) {
3177 DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i);
3181 /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
3182 if (!(r->flags & DRM_MODE_FB_MODIFIERS))
3185 if (r->handles[i]) {
3186 DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i);
3190 if (r->pitches[i]) {
3191 DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i);
3195 if (r->offsets[i]) {
3196 DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i);
3204 static struct drm_framebuffer *
3205 internal_framebuffer_create(struct drm_device *dev,
3206 struct drm_mode_fb_cmd2 *r,
3207 struct drm_file *file_priv)
3209 struct drm_mode_config *config = &dev->mode_config;
3210 struct drm_framebuffer *fb;
3213 if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
3214 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
3215 return ERR_PTR(-EINVAL);
3218 if ((config->min_width > r->width) || (r->width > config->max_width)) {
3219 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3220 r->width, config->min_width, config->max_width);
3221 return ERR_PTR(-EINVAL);
3223 if ((config->min_height > r->height) || (r->height > config->max_height)) {
3224 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3225 r->height, config->min_height, config->max_height);
3226 return ERR_PTR(-EINVAL);
3229 if (r->flags & DRM_MODE_FB_MODIFIERS &&
3230 !dev->mode_config.allow_fb_modifiers) {
3231 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3232 return ERR_PTR(-EINVAL);
3235 ret = framebuffer_check(r);
3237 return ERR_PTR(ret);
3239 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
3241 DRM_DEBUG_KMS("could not create framebuffer\n");
3249 * drm_mode_addfb2 - add an FB to the graphics configuration
3250 * @dev: drm device for the ioctl
3251 * @data: data pointer for the ioctl
3252 * @file_priv: drm file for the ioctl call
3254 * Add a new FB to the specified CRTC, given a user request with format. This is
3255 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3256 * and uses fourcc codes as pixel format specifiers.
3258 * Called by the user via ioctl.
3261 * Zero on success, negative errno on failure.
3263 int drm_mode_addfb2(struct drm_device *dev,
3264 void *data, struct drm_file *file_priv)
3266 struct drm_mode_fb_cmd2 *r = data;
3267 struct drm_framebuffer *fb;
3269 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3272 fb = internal_framebuffer_create(dev, r, file_priv);
3276 /* Transfer ownership to the filp for reaping on close */
3278 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3279 mutex_lock(&file_priv->fbs_lock);
3280 r->fb_id = fb->base.id;
3281 list_add(&fb->filp_head, &file_priv->fbs);
3282 mutex_unlock(&file_priv->fbs_lock);
3288 * drm_mode_rmfb - remove an FB from the configuration
3289 * @dev: drm device for the ioctl
3290 * @data: data pointer for the ioctl
3291 * @file_priv: drm file for the ioctl call
3293 * Remove the FB specified by the user.
3295 * Called by the user via ioctl.
3298 * Zero on success, negative errno on failure.
3300 int drm_mode_rmfb(struct drm_device *dev,
3301 void *data, struct drm_file *file_priv)
3303 struct drm_framebuffer *fb = NULL;
3304 struct drm_framebuffer *fbl = NULL;
3305 uint32_t *id = data;
3308 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3311 mutex_lock(&file_priv->fbs_lock);
3312 mutex_lock(&dev->mode_config.fb_lock);
3313 fb = __drm_framebuffer_lookup(dev, *id);
3317 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3323 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3324 __drm_framebuffer_unregister(dev, fb);
3326 list_del_init(&fb->filp_head);
3327 mutex_unlock(&dev->mode_config.fb_lock);
3328 mutex_unlock(&file_priv->fbs_lock);
3330 drm_framebuffer_remove(fb);
3335 mutex_unlock(&dev->mode_config.fb_lock);
3336 mutex_unlock(&file_priv->fbs_lock);
3342 * drm_mode_getfb - get FB info
3343 * @dev: drm device for the ioctl
3344 * @data: data pointer for the ioctl
3345 * @file_priv: drm file for the ioctl call
3347 * Lookup the FB given its ID and return info about it.
3349 * Called by the user via ioctl.
3352 * Zero on success, negative errno on failure.
3354 int drm_mode_getfb(struct drm_device *dev,
3355 void *data, struct drm_file *file_priv)
3357 struct drm_mode_fb_cmd *r = data;
3358 struct drm_framebuffer *fb;
3361 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3364 fb = drm_framebuffer_lookup(dev, r->fb_id);
3368 r->height = fb->height;
3369 r->width = fb->width;
3370 r->depth = fb->depth;
3371 r->bpp = fb->bits_per_pixel;
3372 r->pitch = fb->pitches[0];
3373 if (fb->funcs->create_handle) {
3374 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
3375 drm_is_control_client(file_priv)) {
3376 ret = fb->funcs->create_handle(fb, file_priv,
3379 /* GET_FB() is an unprivileged ioctl so we must not
3380 * return a buffer-handle to non-master processes! For
3381 * backwards-compatibility reasons, we cannot make
3382 * GET_FB() privileged, so just return an invalid handle
3383 * for non-masters. */
3391 drm_framebuffer_unreference(fb);
3397 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3398 * @dev: drm device for the ioctl
3399 * @data: data pointer for the ioctl
3400 * @file_priv: drm file for the ioctl call
3402 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3403 * rectangle list. Generic userspace which does frontbuffer rendering must call
3404 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3405 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3407 * Modesetting drivers which always update the frontbuffer do not need to
3408 * implement the corresponding ->dirty framebuffer callback.
3410 * Called by the user via ioctl.
3413 * Zero on success, negative errno on failure.
3415 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3416 void *data, struct drm_file *file_priv)
3418 struct drm_clip_rect __user *clips_ptr;
3419 struct drm_clip_rect *clips = NULL;
3420 struct drm_mode_fb_dirty_cmd *r = data;
3421 struct drm_framebuffer *fb;
3426 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3429 fb = drm_framebuffer_lookup(dev, r->fb_id);
3433 num_clips = r->num_clips;
3434 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3436 if (!num_clips != !clips_ptr) {
3441 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3443 /* If userspace annotates copy, clips must come in pairs */
3444 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3449 if (num_clips && clips_ptr) {
3450 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3454 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
3460 ret = copy_from_user(clips, clips_ptr,
3461 num_clips * sizeof(*clips));
3468 if (fb->funcs->dirty) {
3469 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3478 drm_framebuffer_unreference(fb);
3485 * drm_fb_release - remove and free the FBs on this file
3486 * @priv: drm file for the ioctl
3488 * Destroy all the FBs associated with @filp.
3490 * Called by the user via ioctl.
3493 * Zero on success, negative errno on failure.
3495 void drm_fb_release(struct drm_file *priv)
3497 struct drm_device *dev = priv->minor->dev;
3498 struct drm_framebuffer *fb, *tfb;
3501 * When the file gets released that means no one else can access the fb
3502 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3503 * avoid upsetting lockdep since the universal cursor code adds a
3504 * framebuffer while holding mutex locks.
3506 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3507 * locks is impossible here since no one else but this function can get
3510 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3512 mutex_lock(&dev->mode_config.fb_lock);
3513 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3514 __drm_framebuffer_unregister(dev, fb);
3515 mutex_unlock(&dev->mode_config.fb_lock);
3517 list_del_init(&fb->filp_head);
3519 /* This will also drop the fpriv->fbs reference. */
3520 drm_framebuffer_remove(fb);
3525 * drm_property_create - create a new property type
3527 * @flags: flags specifying the property type
3528 * @name: name of the property
3529 * @num_values: number of pre-defined values
3531 * This creates a new generic drm property which can then be attached to a drm
3532 * object with drm_object_attach_property. The returned property object must be
3533 * freed with drm_property_destroy.
3535 * Note that the DRM core keeps a per-device list of properties and that, if
3536 * drm_mode_config_cleanup() is called, it will destroy all properties created
3540 * A pointer to the newly created property on success, NULL on failure.
3542 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3543 const char *name, int num_values)
3545 struct drm_property *property = NULL;
3548 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3552 property->dev = dev;
3555 property->values = kcalloc(num_values, sizeof(uint64_t),
3557 if (!property->values)
3561 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3565 property->flags = flags;
3566 property->num_values = num_values;
3567 INIT_LIST_HEAD(&property->enum_list);
3570 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3571 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3574 list_add_tail(&property->head, &dev->mode_config.property_list);
3576 WARN_ON(!drm_property_type_valid(property));
3580 kfree(property->values);
3584 EXPORT_SYMBOL(drm_property_create);
3587 * drm_property_create_enum - create a new enumeration property type
3589 * @flags: flags specifying the property type
3590 * @name: name of the property
3591 * @props: enumeration lists with property values
3592 * @num_values: number of pre-defined values
3594 * This creates a new generic drm property which can then be attached to a drm
3595 * object with drm_object_attach_property. The returned property object must be
3596 * freed with drm_property_destroy.
3598 * Userspace is only allowed to set one of the predefined values for enumeration
3602 * A pointer to the newly created property on success, NULL on failure.
3604 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3606 const struct drm_prop_enum_list *props,
3609 struct drm_property *property;
3612 flags |= DRM_MODE_PROP_ENUM;
3614 property = drm_property_create(dev, flags, name, num_values);
3618 for (i = 0; i < num_values; i++) {
3619 ret = drm_property_add_enum(property, i,
3623 drm_property_destroy(dev, property);
3630 EXPORT_SYMBOL(drm_property_create_enum);
3633 * drm_property_create_bitmask - create a new bitmask property type
3635 * @flags: flags specifying the property type
3636 * @name: name of the property
3637 * @props: enumeration lists with property bitflags
3638 * @num_props: size of the @props array
3639 * @supported_bits: bitmask of all supported enumeration values
3641 * This creates a new bitmask drm property which can then be attached to a drm
3642 * object with drm_object_attach_property. The returned property object must be
3643 * freed with drm_property_destroy.
3645 * Compared to plain enumeration properties userspace is allowed to set any
3646 * or'ed together combination of the predefined property bitflag values
3649 * A pointer to the newly created property on success, NULL on failure.
3651 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3652 int flags, const char *name,
3653 const struct drm_prop_enum_list *props,
3655 uint64_t supported_bits)
3657 struct drm_property *property;
3658 int i, ret, index = 0;
3659 int num_values = hweight64(supported_bits);
3661 flags |= DRM_MODE_PROP_BITMASK;
3663 property = drm_property_create(dev, flags, name, num_values);
3666 for (i = 0; i < num_props; i++) {
3667 if (!(supported_bits & (1ULL << props[i].type)))
3670 if (WARN_ON(index >= num_values)) {
3671 drm_property_destroy(dev, property);
3675 ret = drm_property_add_enum(property, index++,
3679 drm_property_destroy(dev, property);
3686 EXPORT_SYMBOL(drm_property_create_bitmask);
3688 static struct drm_property *property_create_range(struct drm_device *dev,
3689 int flags, const char *name,
3690 uint64_t min, uint64_t max)
3692 struct drm_property *property;
3694 property = drm_property_create(dev, flags, name, 2);
3698 property->values[0] = min;
3699 property->values[1] = max;
3705 * drm_property_create_range - create a new unsigned ranged property type
3707 * @flags: flags specifying the property type
3708 * @name: name of the property
3709 * @min: minimum value of the property
3710 * @max: maximum value of the property
3712 * This creates a new generic drm property which can then be attached to a drm
3713 * object with drm_object_attach_property. The returned property object must be
3714 * freed with drm_property_destroy.
3716 * Userspace is allowed to set any unsigned integer value in the (min, max)
3720 * A pointer to the newly created property on success, NULL on failure.
3722 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3724 uint64_t min, uint64_t max)
3726 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3729 EXPORT_SYMBOL(drm_property_create_range);
3732 * drm_property_create_signed_range - create a new signed ranged property type
3734 * @flags: flags specifying the property type
3735 * @name: name of the property
3736 * @min: minimum value of the property
3737 * @max: maximum value of the property
3739 * This creates a new generic drm property which can then be attached to a drm
3740 * object with drm_object_attach_property. The returned property object must be
3741 * freed with drm_property_destroy.
3743 * Userspace is allowed to set any signed integer value in the (min, max)
3747 * A pointer to the newly created property on success, NULL on failure.
3749 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3750 int flags, const char *name,
3751 int64_t min, int64_t max)
3753 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3754 name, I642U64(min), I642U64(max));
3756 EXPORT_SYMBOL(drm_property_create_signed_range);
3759 * drm_property_create_object - create a new object property type
3761 * @flags: flags specifying the property type
3762 * @name: name of the property
3763 * @type: object type from DRM_MODE_OBJECT_* defines
3765 * This creates a new generic drm property which can then be attached to a drm
3766 * object with drm_object_attach_property. The returned property object must be
3767 * freed with drm_property_destroy.
3769 * Userspace is only allowed to set this to any property value of the given
3770 * @type. Only useful for atomic properties, which is enforced.
3773 * A pointer to the newly created property on success, NULL on failure.
3775 struct drm_property *drm_property_create_object(struct drm_device *dev,
3776 int flags, const char *name, uint32_t type)
3778 struct drm_property *property;
3780 flags |= DRM_MODE_PROP_OBJECT;
3782 if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
3785 property = drm_property_create(dev, flags, name, 1);
3789 property->values[0] = type;
3793 EXPORT_SYMBOL(drm_property_create_object);
3796 * drm_property_create_bool - create a new boolean property type
3798 * @flags: flags specifying the property type
3799 * @name: name of the property
3801 * This creates a new generic drm property which can then be attached to a drm
3802 * object with drm_object_attach_property. The returned property object must be
3803 * freed with drm_property_destroy.
3805 * This is implemented as a ranged property with only {0, 1} as valid values.
3808 * A pointer to the newly created property on success, NULL on failure.
3810 struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
3813 return drm_property_create_range(dev, flags, name, 0, 1);
3815 EXPORT_SYMBOL(drm_property_create_bool);
3818 * drm_property_add_enum - add a possible value to an enumeration property
3819 * @property: enumeration property to change
3820 * @index: index of the new enumeration
3821 * @value: value of the new enumeration
3822 * @name: symbolic name of the new enumeration
3824 * This functions adds enumerations to a property.
3826 * It's use is deprecated, drivers should use one of the more specific helpers
3827 * to directly create the property with all enumerations already attached.
3830 * Zero on success, error code on failure.
3832 int drm_property_add_enum(struct drm_property *property, int index,
3833 uint64_t value, const char *name)
3835 struct drm_property_enum *prop_enum;
3837 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3838 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
3842 * Bitmask enum properties have the additional constraint of values
3845 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3849 if (!list_empty(&property->enum_list)) {
3850 list_for_each_entry(prop_enum, &property->enum_list, head) {
3851 if (prop_enum->value == value) {
3852 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3853 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3859 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3863 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3864 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3865 prop_enum->value = value;
3867 property->values[index] = value;
3868 list_add_tail(&prop_enum->head, &property->enum_list);
3871 EXPORT_SYMBOL(drm_property_add_enum);
3874 * drm_property_destroy - destroy a drm property
3876 * @property: property to destry
3878 * This function frees a property including any attached resources like
3879 * enumeration values.
3881 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3883 struct drm_property_enum *prop_enum, *pt;
3885 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
3886 list_del(&prop_enum->head);
3890 if (property->num_values)
3891 kfree(property->values);
3892 drm_mode_object_put(dev, &property->base);
3893 list_del(&property->head);
3896 EXPORT_SYMBOL(drm_property_destroy);
3899 * drm_object_attach_property - attach a property to a modeset object
3900 * @obj: drm modeset object
3901 * @property: property to attach
3902 * @init_val: initial value of the property
3904 * This attaches the given property to the modeset object with the given initial
3905 * value. Currently this function cannot fail since the properties are stored in
3906 * a statically sized array.
3908 void drm_object_attach_property(struct drm_mode_object *obj,
3909 struct drm_property *property,
3912 int count = obj->properties->count;
3914 if (count == DRM_OBJECT_MAX_PROPERTY) {
3915 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3916 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3917 "you see this message on the same object type.\n",
3922 obj->properties->properties[count] = property;
3923 obj->properties->values[count] = init_val;
3924 obj->properties->count++;
3925 if (property->flags & DRM_MODE_PROP_ATOMIC)
3926 obj->properties->atomic_count++;
3928 EXPORT_SYMBOL(drm_object_attach_property);
3931 * drm_object_property_set_value - set the value of a property
3932 * @obj: drm mode object to set property value for
3933 * @property: property to set
3934 * @val: value the property should be set to
3936 * This functions sets a given property on a given object. This function only
3937 * changes the software state of the property, it does not call into the
3938 * driver's ->set_property callback.
3941 * Zero on success, error code on failure.
3943 int drm_object_property_set_value(struct drm_mode_object *obj,
3944 struct drm_property *property, uint64_t val)
3948 for (i = 0; i < obj->properties->count; i++) {
3949 if (obj->properties->properties[i] == property) {
3950 obj->properties->values[i] = val;
3957 EXPORT_SYMBOL(drm_object_property_set_value);
3960 * drm_object_property_get_value - retrieve the value of a property
3961 * @obj: drm mode object to get property value from
3962 * @property: property to retrieve
3963 * @val: storage for the property value
3965 * This function retrieves the softare state of the given property for the given
3966 * property. Since there is no driver callback to retrieve the current property
3967 * value this might be out of sync with the hardware, depending upon the driver
3971 * Zero on success, error code on failure.
3973 int drm_object_property_get_value(struct drm_mode_object *obj,
3974 struct drm_property *property, uint64_t *val)
3978 /* read-only properties bypass atomic mechanism and still store
3979 * their value in obj->properties->values[].. mostly to avoid
3980 * having to deal w/ EDID and similar props in atomic paths:
3982 if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
3983 !(property->flags & DRM_MODE_PROP_IMMUTABLE))
3984 return drm_atomic_get_property(obj, property, val);
3986 for (i = 0; i < obj->properties->count; i++) {
3987 if (obj->properties->properties[i] == property) {
3988 *val = obj->properties->values[i];
3995 EXPORT_SYMBOL(drm_object_property_get_value);
3998 * drm_mode_getproperty_ioctl - get the property metadata
4001 * @file_priv: DRM file info
4003 * This function retrieves the metadata for a given property, like the different
4004 * possible values for an enum property or the limits for a range property.
4006 * Blob properties are special
4008 * Called by the user via ioctl.
4011 * Zero on success, negative errno on failure.
4013 int drm_mode_getproperty_ioctl(struct drm_device *dev,
4014 void *data, struct drm_file *file_priv)
4016 struct drm_mode_get_property *out_resp = data;
4017 struct drm_property *property;
4019 int value_count = 0;
4022 struct drm_property_enum *prop_enum;
4023 struct drm_mode_property_enum __user *enum_ptr;
4024 uint64_t __user *values_ptr;
4026 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4029 drm_modeset_lock_all(dev);
4030 property = drm_property_find(dev, out_resp->prop_id);
4036 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4037 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4038 list_for_each_entry(prop_enum, &property->enum_list, head)
4042 value_count = property->num_values;
4044 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
4045 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
4046 out_resp->flags = property->flags;
4048 if ((out_resp->count_values >= value_count) && value_count) {
4049 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
4050 for (i = 0; i < value_count; i++) {
4051 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
4057 out_resp->count_values = value_count;
4059 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4060 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4061 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
4063 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
4064 list_for_each_entry(prop_enum, &property->enum_list, head) {
4066 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
4071 if (copy_to_user(&enum_ptr[copied].name,
4072 &prop_enum->name, DRM_PROP_NAME_LEN)) {
4079 out_resp->count_enum_blobs = enum_count;
4083 * NOTE: The idea seems to have been to use this to read all the blob
4084 * property values. But nothing ever added them to the corresponding
4085 * list, userspace always used the special-purpose get_blob ioctl to
4086 * read the value for a blob property. It also doesn't make a lot of
4087 * sense to return values here when everything else is just metadata for
4088 * the property itself.
4090 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4091 out_resp->count_enum_blobs = 0;
4093 drm_modeset_unlock_all(dev);
4098 * drm_property_create_blob - Create new blob property
4100 * Creates a new blob property for a specified DRM device, optionally
4103 * @dev: DRM device to create property for
4104 * @length: Length to allocate for blob data
4105 * @data: If specified, copies data into blob
4108 * New blob property with a single reference on success, or an ERR_PTR
4111 struct drm_property_blob *
4112 drm_property_create_blob(struct drm_device *dev, size_t length,
4115 struct drm_property_blob *blob;
4119 return ERR_PTR(-EINVAL);
4121 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
4123 return ERR_PTR(-ENOMEM);
4125 /* This must be explicitly initialised, so we can safely call list_del
4126 * on it in the removal handler, even if it isn't in a file list. */
4127 INIT_LIST_HEAD(&blob->head_file);
4128 blob->length = length;
4132 memcpy(blob->data, data, length);
4134 mutex_lock(&dev->mode_config.blob_lock);
4136 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
4139 mutex_unlock(&dev->mode_config.blob_lock);
4140 return ERR_PTR(-EINVAL);
4143 kref_init(&blob->refcount);
4145 list_add_tail(&blob->head_global,
4146 &dev->mode_config.property_blob_list);
4148 mutex_unlock(&dev->mode_config.blob_lock);
4152 EXPORT_SYMBOL(drm_property_create_blob);
4155 * drm_property_free_blob - Blob property destructor
4157 * Internal free function for blob properties; must not be used directly.
4161 static void drm_property_free_blob(struct kref *kref)
4163 struct drm_property_blob *blob =
4164 container_of(kref, struct drm_property_blob, refcount);
4166 WARN_ON(!mutex_is_locked(&blob->dev->mode_config.blob_lock));
4168 list_del(&blob->head_global);
4169 list_del(&blob->head_file);
4170 drm_mode_object_put(blob->dev, &blob->base);
4176 * drm_property_unreference_blob - Unreference a blob property
4178 * Drop a reference on a blob property. May free the object.
4180 * @blob: Pointer to blob property
4182 void drm_property_unreference_blob(struct drm_property_blob *blob)
4184 struct drm_device *dev;
4191 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4193 if (kref_put_mutex(&blob->refcount, drm_property_free_blob,
4194 &dev->mode_config.blob_lock))
4195 mutex_unlock(&dev->mode_config.blob_lock);
4197 might_lock(&dev->mode_config.blob_lock);
4199 EXPORT_SYMBOL(drm_property_unreference_blob);
4202 * drm_property_unreference_blob_locked - Unreference a blob property with blob_lock held
4204 * Drop a reference on a blob property. May free the object. This must be
4205 * called with blob_lock held.
4207 * @blob: Pointer to blob property
4209 static void drm_property_unreference_blob_locked(struct drm_property_blob *blob)
4214 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4216 kref_put(&blob->refcount, drm_property_free_blob);
4220 * drm_property_destroy_user_blobs - destroy all blobs created by this client
4222 * @file_priv: destroy all blobs owned by this file handle
4224 void drm_property_destroy_user_blobs(struct drm_device *dev,
4225 struct drm_file *file_priv)
4227 struct drm_property_blob *blob, *bt;
4229 mutex_lock(&dev->mode_config.blob_lock);
4231 list_for_each_entry_safe(blob, bt, &file_priv->blobs, head_file) {
4232 list_del_init(&blob->head_file);
4233 drm_property_unreference_blob_locked(blob);
4236 mutex_unlock(&dev->mode_config.blob_lock);
4240 * drm_property_reference_blob - Take a reference on an existing property
4242 * Take a new reference on an existing blob property.
4244 * @blob: Pointer to blob property
4246 struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob)
4248 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4249 kref_get(&blob->refcount);
4252 EXPORT_SYMBOL(drm_property_reference_blob);
4255 * Like drm_property_lookup_blob, but does not return an additional reference.
4256 * Must be called with blob_lock held.
4258 static struct drm_property_blob *__drm_property_lookup_blob(struct drm_device *dev,
4261 struct drm_mode_object *obj = NULL;
4262 struct drm_property_blob *blob;
4264 WARN_ON(!mutex_is_locked(&dev->mode_config.blob_lock));
4266 mutex_lock(&dev->mode_config.idr_mutex);
4267 obj = idr_find(&dev->mode_config.crtc_idr, id);
4268 if (!obj || (obj->type != DRM_MODE_OBJECT_BLOB) || (obj->id != id))
4271 blob = obj_to_blob(obj);
4272 mutex_unlock(&dev->mode_config.idr_mutex);
4278 * drm_property_lookup_blob - look up a blob property and take a reference
4280 * @id: id of the blob property
4282 * If successful, this takes an additional reference to the blob property.
4283 * callers need to make sure to eventually unreference the returned property
4284 * again, using @drm_property_unreference_blob.
4286 struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
4289 struct drm_property_blob *blob;
4291 mutex_lock(&dev->mode_config.blob_lock);
4292 blob = __drm_property_lookup_blob(dev, id);
4294 if (!kref_get_unless_zero(&blob->refcount))
4297 mutex_unlock(&dev->mode_config.blob_lock);
4301 EXPORT_SYMBOL(drm_property_lookup_blob);
4304 * drm_property_replace_global_blob - atomically replace existing blob property
4306 * @replace: location of blob property pointer to be replaced
4307 * @length: length of data for new blob, or 0 for no data
4308 * @data: content for new blob, or NULL for no data
4309 * @obj_holds_id: optional object for property holding blob ID
4310 * @prop_holds_id: optional property holding blob ID
4311 * @return 0 on success or error on failure
4313 * This function will atomically replace a global property in the blob list,
4314 * optionally updating a property which holds the ID of that property. It is
4315 * guaranteed to be atomic: no caller will be allowed to see intermediate
4316 * results, and either the entire operation will succeed and clean up the
4317 * previous property, or it will fail and the state will be unchanged.
4319 * If length is 0 or data is NULL, no new blob will be created, and the holding
4320 * property, if specified, will be set to 0.
4322 * Access to the replace pointer is assumed to be protected by the caller, e.g.
4323 * by holding the relevant modesetting object lock for its parent.
4325 * For example, a drm_connector has a 'PATH' property, which contains the ID
4326 * of a blob property with the value of the MST path information. Calling this
4327 * function with replace pointing to the connector's path_blob_ptr, length and
4328 * data set for the new path information, obj_holds_id set to the connector's
4329 * base object, and prop_holds_id set to the path property name, will perform
4330 * a completely atomic update. The access to path_blob_ptr is protected by the
4331 * caller holding a lock on the connector.
4333 static int drm_property_replace_global_blob(struct drm_device *dev,
4334 struct drm_property_blob **replace,
4337 struct drm_mode_object *obj_holds_id,
4338 struct drm_property *prop_holds_id)
4340 struct drm_property_blob *new_blob = NULL;
4341 struct drm_property_blob *old_blob = NULL;
4344 WARN_ON(replace == NULL);
4346 old_blob = *replace;
4348 if (length && data) {
4349 new_blob = drm_property_create_blob(dev, length, data);
4350 if (IS_ERR(new_blob))
4351 return PTR_ERR(new_blob);
4354 /* This does not need to be synchronised with blob_lock, as the
4355 * get_properties ioctl locks all modesetting objects, and
4356 * obj_holds_id must be locked before calling here, so we cannot
4357 * have its value out of sync with the list membership modified
4358 * below under blob_lock. */
4360 ret = drm_object_property_set_value(obj_holds_id,
4363 new_blob->base.id : 0);
4368 drm_property_unreference_blob(old_blob);
4369 *replace = new_blob;
4374 drm_property_unreference_blob(new_blob);
4379 * drm_mode_getblob_ioctl - get the contents of a blob property value
4382 * @file_priv: DRM file info
4384 * This function retrieves the contents of a blob property. The value stored in
4385 * an object's blob property is just a normal modeset object id.
4387 * Called by the user via ioctl.
4390 * Zero on success, negative errno on failure.
4392 int drm_mode_getblob_ioctl(struct drm_device *dev,
4393 void *data, struct drm_file *file_priv)
4395 struct drm_mode_get_blob *out_resp = data;
4396 struct drm_property_blob *blob;
4398 void __user *blob_ptr;
4400 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4403 drm_modeset_lock_all(dev);
4404 mutex_lock(&dev->mode_config.blob_lock);
4405 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
4411 if (out_resp->length == blob->length) {
4412 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4413 if (copy_to_user(blob_ptr, blob->data, blob->length)) {
4418 out_resp->length = blob->length;
4421 mutex_unlock(&dev->mode_config.blob_lock);
4422 drm_modeset_unlock_all(dev);
4427 * drm_mode_createblob_ioctl - create a new blob property
4430 * @file_priv: DRM file info
4432 * This function creates a new blob property with user-defined values. In order
4433 * to give us sensible validation and checking when creating, rather than at
4434 * every potential use, we also require a type to be provided upfront.
4436 * Called by the user via ioctl.
4439 * Zero on success, negative errno on failure.
4441 int drm_mode_createblob_ioctl(struct drm_device *dev,
4442 void *data, struct drm_file *file_priv)
4444 struct drm_mode_create_blob *out_resp = data;
4445 struct drm_property_blob *blob;
4446 void __user *blob_ptr;
4449 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4452 blob = drm_property_create_blob(dev, out_resp->length, NULL);
4454 return PTR_ERR(blob);
4456 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4457 if (copy_from_user(blob->data, blob_ptr, out_resp->length)) {
4462 /* Dropping the lock between create_blob and our access here is safe
4463 * as only the same file_priv can remove the blob; at this point, it is
4464 * not associated with any file_priv. */
4465 mutex_lock(&dev->mode_config.blob_lock);
4466 out_resp->blob_id = blob->base.id;
4467 list_add_tail(&file_priv->blobs, &blob->head_file);
4468 mutex_unlock(&dev->mode_config.blob_lock);
4473 drm_property_unreference_blob(blob);
4478 * drm_mode_destroyblob_ioctl - destroy a user blob property
4481 * @file_priv: DRM file info
4483 * Destroy an existing user-defined blob property.
4485 * Called by the user via ioctl.
4488 * Zero on success, negative errno on failure.
4490 int drm_mode_destroyblob_ioctl(struct drm_device *dev,
4491 void *data, struct drm_file *file_priv)
4493 struct drm_mode_destroy_blob *out_resp = data;
4494 struct drm_property_blob *blob = NULL, *bt;
4498 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4501 mutex_lock(&dev->mode_config.blob_lock);
4502 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
4508 /* Ensure the property was actually created by this user. */
4509 list_for_each_entry(bt, &file_priv->blobs, head_file) {
4521 /* We must drop head_file here, because we may not be the last
4522 * reference on the blob. */
4523 list_del_init(&blob->head_file);
4524 drm_property_unreference_blob_locked(blob);
4525 mutex_unlock(&dev->mode_config.blob_lock);
4530 mutex_unlock(&dev->mode_config.blob_lock);
4535 * drm_mode_connector_set_path_property - set tile property on connector
4536 * @connector: connector to set property on.
4537 * @path: path to use for property; must not be NULL.
4539 * This creates a property to expose to userspace to specify a
4540 * connector path. This is mainly used for DisplayPort MST where
4541 * connectors have a topology and we want to allow userspace to give
4542 * them more meaningful names.
4545 * Zero on success, negative errno on failure.
4547 int drm_mode_connector_set_path_property(struct drm_connector *connector,
4550 struct drm_device *dev = connector->dev;
4553 ret = drm_property_replace_global_blob(dev,
4554 &connector->path_blob_ptr,
4558 dev->mode_config.path_property);
4561 EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4564 * drm_mode_connector_set_tile_property - set tile property on connector
4565 * @connector: connector to set property on.
4567 * This looks up the tile information for a connector, and creates a
4568 * property for userspace to parse if it exists. The property is of
4569 * the form of 8 integers using ':' as a separator.
4572 * Zero on success, errno on failure.
4574 int drm_mode_connector_set_tile_property(struct drm_connector *connector)
4576 struct drm_device *dev = connector->dev;
4580 if (!connector->has_tile) {
4581 ret = drm_property_replace_global_blob(dev,
4582 &connector->tile_blob_ptr,
4586 dev->mode_config.tile_property);
4590 snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4591 connector->tile_group->id, connector->tile_is_single_monitor,
4592 connector->num_h_tile, connector->num_v_tile,
4593 connector->tile_h_loc, connector->tile_v_loc,
4594 connector->tile_h_size, connector->tile_v_size);
4596 ret = drm_property_replace_global_blob(dev,
4597 &connector->tile_blob_ptr,
4601 dev->mode_config.tile_property);
4604 EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
4607 * drm_mode_connector_update_edid_property - update the edid property of a connector
4608 * @connector: drm connector
4609 * @edid: new value of the edid property
4611 * This function creates a new blob modeset object and assigns its id to the
4612 * connector's edid property.
4615 * Zero on success, negative errno on failure.
4617 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4618 const struct edid *edid)
4620 struct drm_device *dev = connector->dev;
4624 /* ignore requests to set edid when overridden */
4625 if (connector->override_edid)
4629 size = EDID_LENGTH * (1 + edid->extensions);
4631 ret = drm_property_replace_global_blob(dev,
4632 &connector->edid_blob_ptr,
4636 dev->mode_config.edid_property);
4639 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4641 /* Some properties could refer to dynamic refcnt'd objects, or things that
4642 * need special locking to handle lifetime issues (ie. to ensure the prop
4643 * value doesn't become invalid part way through the property update due to
4644 * race). The value returned by reference via 'obj' should be passed back
4645 * to drm_property_change_valid_put() after the property is set (and the
4646 * object to which the property is attached has a chance to take it's own
4649 bool drm_property_change_valid_get(struct drm_property *property,
4650 uint64_t value, struct drm_mode_object **ref)
4654 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4659 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
4660 if (value < property->values[0] || value > property->values[1])
4663 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4664 int64_t svalue = U642I64(value);
4666 if (svalue < U642I64(property->values[0]) ||
4667 svalue > U642I64(property->values[1]))
4670 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4671 uint64_t valid_mask = 0;
4673 for (i = 0; i < property->num_values; i++)
4674 valid_mask |= (1ULL << property->values[i]);
4675 return !(value & ~valid_mask);
4676 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
4677 struct drm_property_blob *blob;
4682 blob = drm_property_lookup_blob(property->dev, value);
4689 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4690 /* a zero value for an object property translates to null: */
4694 /* handle refcnt'd objects specially: */
4695 if (property->values[0] == DRM_MODE_OBJECT_FB) {
4696 struct drm_framebuffer *fb;
4697 fb = drm_framebuffer_lookup(property->dev, value);
4705 return _object_find(property->dev, value, property->values[0]) != NULL;
4709 for (i = 0; i < property->num_values; i++)
4710 if (property->values[i] == value)
4715 void drm_property_change_valid_put(struct drm_property *property,
4716 struct drm_mode_object *ref)
4721 if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4722 if (property->values[0] == DRM_MODE_OBJECT_FB)
4723 drm_framebuffer_unreference(obj_to_fb(ref));
4724 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4725 drm_property_unreference_blob(obj_to_blob(ref));
4729 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4732 * @file_priv: DRM file info
4734 * This function sets the current value for a connectors's property. It also
4735 * calls into a driver's ->set_property callback to update the hardware state
4737 * Called by the user via ioctl.
4740 * Zero on success, negative errno on failure.
4742 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4743 void *data, struct drm_file *file_priv)
4745 struct drm_mode_connector_set_property *conn_set_prop = data;
4746 struct drm_mode_obj_set_property obj_set_prop = {
4747 .value = conn_set_prop->value,
4748 .prop_id = conn_set_prop->prop_id,
4749 .obj_id = conn_set_prop->connector_id,
4750 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4753 /* It does all the locking and checking we need */
4754 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
4757 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4758 struct drm_property *property,
4762 struct drm_connector *connector = obj_to_connector(obj);
4764 /* Do DPMS ourselves */
4765 if (property == connector->dev->mode_config.dpms_property) {
4767 if (connector->funcs->dpms)
4768 ret = (*connector->funcs->dpms)(connector, (int)value);
4769 } else if (connector->funcs->set_property)
4770 ret = connector->funcs->set_property(connector, property, value);
4772 /* store the property value if successful */
4774 drm_object_property_set_value(&connector->base, property, value);
4778 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4779 struct drm_property *property,
4783 struct drm_crtc *crtc = obj_to_crtc(obj);
4785 if (crtc->funcs->set_property)
4786 ret = crtc->funcs->set_property(crtc, property, value);
4788 drm_object_property_set_value(obj, property, value);
4794 * drm_mode_plane_set_obj_prop - set the value of a property
4795 * @plane: drm plane object to set property value for
4796 * @property: property to set
4797 * @value: value the property should be set to
4799 * This functions sets a given property on a given plane object. This function
4800 * calls the driver's ->set_property callback and changes the software state of
4801 * the property if the callback succeeds.
4804 * Zero on success, error code on failure.
4806 int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4807 struct drm_property *property,
4811 struct drm_mode_object *obj = &plane->base;
4813 if (plane->funcs->set_property)
4814 ret = plane->funcs->set_property(plane, property, value);
4816 drm_object_property_set_value(obj, property, value);
4820 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4823 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4826 * @file_priv: DRM file info
4828 * This function retrieves the current value for an object's property. Compared
4829 * to the connector specific ioctl this one is extended to also work on crtc and
4832 * Called by the user via ioctl.
4835 * Zero on success, negative errno on failure.
4837 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4838 struct drm_file *file_priv)
4840 struct drm_mode_obj_get_properties *arg = data;
4841 struct drm_mode_object *obj;
4844 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4847 drm_modeset_lock_all(dev);
4849 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4854 if (!obj->properties) {
4859 ret = get_properties(obj, file_priv->atomic,
4860 (uint32_t __user *)(unsigned long)(arg->props_ptr),
4861 (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
4865 drm_modeset_unlock_all(dev);
4870 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4873 * @file_priv: DRM file info
4875 * This function sets the current value for an object's property. It also calls
4876 * into a driver's ->set_property callback to update the hardware state.
4877 * Compared to the connector specific ioctl this one is extended to also work on
4878 * crtc and plane objects.
4880 * Called by the user via ioctl.
4883 * Zero on success, negative errno on failure.
4885 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4886 struct drm_file *file_priv)
4888 struct drm_mode_obj_set_property *arg = data;
4889 struct drm_mode_object *arg_obj;
4890 struct drm_mode_object *prop_obj;
4891 struct drm_property *property;
4892 int i, ret = -EINVAL;
4893 struct drm_mode_object *ref;
4895 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4898 drm_modeset_lock_all(dev);
4900 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4905 if (!arg_obj->properties)
4908 for (i = 0; i < arg_obj->properties->count; i++)
4909 if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
4912 if (i == arg_obj->properties->count)
4915 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4916 DRM_MODE_OBJECT_PROPERTY);
4921 property = obj_to_property(prop_obj);
4923 if (!drm_property_change_valid_get(property, arg->value, &ref))
4926 switch (arg_obj->type) {
4927 case DRM_MODE_OBJECT_CONNECTOR:
4928 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4931 case DRM_MODE_OBJECT_CRTC:
4932 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4934 case DRM_MODE_OBJECT_PLANE:
4935 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
4936 property, arg->value);
4940 drm_property_change_valid_put(property, ref);
4943 drm_modeset_unlock_all(dev);
4948 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4949 * @connector: connector to attach
4950 * @encoder: encoder to attach @connector to
4952 * This function links up a connector to an encoder. Note that the routing
4953 * restrictions between encoders and crtcs are exposed to userspace through the
4954 * possible_clones and possible_crtcs bitmasks.
4957 * Zero on success, negative errno on failure.
4959 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4960 struct drm_encoder *encoder)
4964 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4965 if (connector->encoder_ids[i] == 0) {
4966 connector->encoder_ids[i] = encoder->base.id;
4972 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4975 * drm_mode_crtc_set_gamma_size - set the gamma table size
4976 * @crtc: CRTC to set the gamma table size for
4977 * @gamma_size: size of the gamma table
4979 * Drivers which support gamma tables should set this to the supported gamma
4980 * table size when initializing the CRTC. Currently the drm core only supports a
4981 * fixed gamma table size.
4984 * Zero on success, negative errno on failure.
4986 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
4989 crtc->gamma_size = gamma_size;
4991 crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
4993 if (!crtc->gamma_store) {
4994 crtc->gamma_size = 0;
5000 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
5003 * drm_mode_gamma_set_ioctl - set the gamma table
5006 * @file_priv: DRM file info
5008 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
5009 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
5011 * Called by the user via ioctl.
5014 * Zero on success, negative errno on failure.
5016 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
5017 void *data, struct drm_file *file_priv)
5019 struct drm_mode_crtc_lut *crtc_lut = data;
5020 struct drm_crtc *crtc;
5021 void *r_base, *g_base, *b_base;
5025 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5028 drm_modeset_lock_all(dev);
5029 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5035 if (crtc->funcs->gamma_set == NULL) {
5040 /* memcpy into gamma store */
5041 if (crtc_lut->gamma_size != crtc->gamma_size) {
5046 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5047 r_base = crtc->gamma_store;
5048 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
5053 g_base = r_base + size;
5054 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
5059 b_base = g_base + size;
5060 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
5065 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
5068 drm_modeset_unlock_all(dev);
5074 * drm_mode_gamma_get_ioctl - get the gamma table
5077 * @file_priv: DRM file info
5079 * Copy the current gamma table into the storage provided. This also provides
5080 * the gamma table size the driver expects, which can be used to size the
5081 * allocated storage.
5083 * Called by the user via ioctl.
5086 * Zero on success, negative errno on failure.
5088 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
5089 void *data, struct drm_file *file_priv)
5091 struct drm_mode_crtc_lut *crtc_lut = data;
5092 struct drm_crtc *crtc;
5093 void *r_base, *g_base, *b_base;
5097 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5100 drm_modeset_lock_all(dev);
5101 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5107 /* memcpy into gamma store */
5108 if (crtc_lut->gamma_size != crtc->gamma_size) {
5113 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5114 r_base = crtc->gamma_store;
5115 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
5120 g_base = r_base + size;
5121 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
5126 b_base = g_base + size;
5127 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
5132 drm_modeset_unlock_all(dev);
5137 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
5140 * @file_priv: DRM file info
5142 * This schedules an asynchronous update on a given CRTC, called page flip.
5143 * Optionally a drm event is generated to signal the completion of the event.
5144 * Generic drivers cannot assume that a pageflip with changed framebuffer
5145 * properties (including driver specific metadata like tiling layout) will work,
5146 * but some drivers support e.g. pixel format changes through the pageflip
5149 * Called by the user via ioctl.
5152 * Zero on success, negative errno on failure.
5154 int drm_mode_page_flip_ioctl(struct drm_device *dev,
5155 void *data, struct drm_file *file_priv)
5157 struct drm_mode_crtc_page_flip *page_flip = data;
5158 struct drm_crtc *crtc;
5159 struct drm_framebuffer *fb = NULL;
5160 struct drm_pending_vblank_event *e = NULL;
5161 unsigned long flags;
5164 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
5165 page_flip->reserved != 0)
5168 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
5171 crtc = drm_crtc_find(dev, page_flip->crtc_id);
5175 drm_modeset_lock_crtc(crtc, crtc->primary);
5176 if (crtc->primary->fb == NULL) {
5177 /* The framebuffer is currently unbound, presumably
5178 * due to a hotplug event, that userspace has not
5185 if (crtc->funcs->page_flip == NULL)
5188 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
5194 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
5198 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
5199 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
5204 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
5206 spin_lock_irqsave(&dev->event_lock, flags);
5207 if (file_priv->event_space < sizeof(e->event)) {
5208 spin_unlock_irqrestore(&dev->event_lock, flags);
5211 file_priv->event_space -= sizeof(e->event);
5212 spin_unlock_irqrestore(&dev->event_lock, flags);
5214 e = kzalloc(sizeof(*e), GFP_KERNEL);
5216 spin_lock_irqsave(&dev->event_lock, flags);
5217 file_priv->event_space += sizeof(e->event);
5218 spin_unlock_irqrestore(&dev->event_lock, flags);
5222 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
5223 e->event.base.length = sizeof(e->event);
5224 e->event.user_data = page_flip->user_data;
5225 e->base.event = &e->event.base;
5226 e->base.file_priv = file_priv;
5228 (void (*) (struct drm_pending_event *)) kfree;
5231 crtc->primary->old_fb = crtc->primary->fb;
5232 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
5234 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
5235 spin_lock_irqsave(&dev->event_lock, flags);
5236 file_priv->event_space += sizeof(e->event);
5237 spin_unlock_irqrestore(&dev->event_lock, flags);
5240 /* Keep the old fb, don't unref it. */
5241 crtc->primary->old_fb = NULL;
5243 crtc->primary->fb = fb;
5244 /* Unref only the old framebuffer. */
5250 drm_framebuffer_unreference(fb);
5251 if (crtc->primary->old_fb)
5252 drm_framebuffer_unreference(crtc->primary->old_fb);
5253 crtc->primary->old_fb = NULL;
5254 drm_modeset_unlock_crtc(crtc);
5260 * drm_mode_config_reset - call ->reset callbacks
5263 * This functions calls all the crtc's, encoder's and connector's ->reset
5264 * callback. Drivers can use this in e.g. their driver load or resume code to
5265 * reset hardware and software state.
5267 void drm_mode_config_reset(struct drm_device *dev)
5269 struct drm_crtc *crtc;
5270 struct drm_plane *plane;
5271 struct drm_encoder *encoder;
5272 struct drm_connector *connector;
5274 drm_for_each_plane(plane, dev)
5275 if (plane->funcs->reset)
5276 plane->funcs->reset(plane);
5278 drm_for_each_crtc(crtc, dev)
5279 if (crtc->funcs->reset)
5280 crtc->funcs->reset(crtc);
5282 drm_for_each_encoder(encoder, dev)
5283 if (encoder->funcs->reset)
5284 encoder->funcs->reset(encoder);
5286 mutex_lock(&dev->mode_config.mutex);
5287 drm_for_each_connector(connector, dev)
5288 if (connector->funcs->reset)
5289 connector->funcs->reset(connector);
5290 mutex_unlock(&dev->mode_config.mutex);
5292 EXPORT_SYMBOL(drm_mode_config_reset);
5295 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5298 * @file_priv: DRM file info
5300 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5301 * TTM or something else entirely) and returns the resulting buffer handle. This
5302 * handle can then be wrapped up into a framebuffer modeset object.
5304 * Note that userspace is not allowed to use such objects for render
5305 * acceleration - drivers must create their own private ioctls for such a use
5308 * Called by the user via ioctl.
5311 * Zero on success, negative errno on failure.
5313 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
5314 void *data, struct drm_file *file_priv)
5316 struct drm_mode_create_dumb *args = data;
5317 u32 cpp, stride, size;
5319 if (!dev->driver->dumb_create)
5321 if (!args->width || !args->height || !args->bpp)
5324 /* overflow checks for 32bit size calculations */
5325 /* NOTE: DIV_ROUND_UP() can overflow */
5326 cpp = DIV_ROUND_UP(args->bpp, 8);
5327 if (!cpp || cpp > 0xffffffffU / args->width)
5329 stride = cpp * args->width;
5330 if (args->height > 0xffffffffU / stride)
5333 /* test for wrap-around */
5334 size = args->height * stride;
5335 if (PAGE_ALIGN(size) == 0)
5339 * handle, pitch and size are output parameters. Zero them out to
5340 * prevent drivers from accidentally using uninitialized data. Since
5341 * not all existing userspace is clearing these fields properly we
5342 * cannot reject IOCTL with garbage in them.
5348 return dev->driver->dumb_create(file_priv, dev, args);
5352 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5355 * @file_priv: DRM file info
5357 * Allocate an offset in the drm device node's address space to be able to
5358 * memory map a dumb buffer.
5360 * Called by the user via ioctl.
5363 * Zero on success, negative errno on failure.
5365 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
5366 void *data, struct drm_file *file_priv)
5368 struct drm_mode_map_dumb *args = data;
5370 /* call driver ioctl to get mmap offset */
5371 if (!dev->driver->dumb_map_offset)
5374 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
5378 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5381 * @file_priv: DRM file info
5383 * This destroys the userspace handle for the given dumb backing storage buffer.
5384 * Since buffer objects must be reference counted in the kernel a buffer object
5385 * won't be immediately freed if a framebuffer modeset object still uses it.
5387 * Called by the user via ioctl.
5390 * Zero on success, negative errno on failure.
5392 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
5393 void *data, struct drm_file *file_priv)
5395 struct drm_mode_destroy_dumb *args = data;
5397 if (!dev->driver->dumb_destroy)
5400 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
5404 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5405 * @format: pixel format (DRM_FORMAT_*)
5406 * @depth: storage for the depth value
5407 * @bpp: storage for the bpp value
5409 * This only supports RGB formats here for compat with code that doesn't use
5410 * pixel formats directly yet.
5412 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
5417 case DRM_FORMAT_RGB332:
5418 case DRM_FORMAT_BGR233:
5422 case DRM_FORMAT_XRGB1555:
5423 case DRM_FORMAT_XBGR1555:
5424 case DRM_FORMAT_RGBX5551:
5425 case DRM_FORMAT_BGRX5551:
5426 case DRM_FORMAT_ARGB1555:
5427 case DRM_FORMAT_ABGR1555:
5428 case DRM_FORMAT_RGBA5551:
5429 case DRM_FORMAT_BGRA5551:
5433 case DRM_FORMAT_RGB565:
5434 case DRM_FORMAT_BGR565:
5438 case DRM_FORMAT_RGB888:
5439 case DRM_FORMAT_BGR888:
5443 case DRM_FORMAT_XRGB8888:
5444 case DRM_FORMAT_XBGR8888:
5445 case DRM_FORMAT_RGBX8888:
5446 case DRM_FORMAT_BGRX8888:
5450 case DRM_FORMAT_XRGB2101010:
5451 case DRM_FORMAT_XBGR2101010:
5452 case DRM_FORMAT_RGBX1010102:
5453 case DRM_FORMAT_BGRX1010102:
5454 case DRM_FORMAT_ARGB2101010:
5455 case DRM_FORMAT_ABGR2101010:
5456 case DRM_FORMAT_RGBA1010102:
5457 case DRM_FORMAT_BGRA1010102:
5461 case DRM_FORMAT_ARGB8888:
5462 case DRM_FORMAT_ABGR8888:
5463 case DRM_FORMAT_RGBA8888:
5464 case DRM_FORMAT_BGRA8888:
5469 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5470 drm_get_format_name(format));
5476 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
5479 * drm_format_num_planes - get the number of planes for format
5480 * @format: pixel format (DRM_FORMAT_*)
5483 * The number of planes used by the specified pixel format.
5485 int drm_format_num_planes(uint32_t format)
5488 case DRM_FORMAT_YUV410:
5489 case DRM_FORMAT_YVU410:
5490 case DRM_FORMAT_YUV411:
5491 case DRM_FORMAT_YVU411:
5492 case DRM_FORMAT_YUV420:
5493 case DRM_FORMAT_YVU420:
5494 case DRM_FORMAT_YUV422:
5495 case DRM_FORMAT_YVU422:
5496 case DRM_FORMAT_YUV444:
5497 case DRM_FORMAT_YVU444:
5499 case DRM_FORMAT_NV12:
5500 case DRM_FORMAT_NV21:
5501 case DRM_FORMAT_NV16:
5502 case DRM_FORMAT_NV61:
5503 case DRM_FORMAT_NV24:
5504 case DRM_FORMAT_NV42:
5510 EXPORT_SYMBOL(drm_format_num_planes);
5513 * drm_format_plane_cpp - determine the bytes per pixel value
5514 * @format: pixel format (DRM_FORMAT_*)
5515 * @plane: plane index
5518 * The bytes per pixel value for the specified plane.
5520 int drm_format_plane_cpp(uint32_t format, int plane)
5525 if (plane >= drm_format_num_planes(format))
5529 case DRM_FORMAT_YUYV:
5530 case DRM_FORMAT_YVYU:
5531 case DRM_FORMAT_UYVY:
5532 case DRM_FORMAT_VYUY:
5534 case DRM_FORMAT_NV12:
5535 case DRM_FORMAT_NV21:
5536 case DRM_FORMAT_NV16:
5537 case DRM_FORMAT_NV61:
5538 case DRM_FORMAT_NV24:
5539 case DRM_FORMAT_NV42:
5540 return plane ? 2 : 1;
5541 case DRM_FORMAT_YUV410:
5542 case DRM_FORMAT_YVU410:
5543 case DRM_FORMAT_YUV411:
5544 case DRM_FORMAT_YVU411:
5545 case DRM_FORMAT_YUV420:
5546 case DRM_FORMAT_YVU420:
5547 case DRM_FORMAT_YUV422:
5548 case DRM_FORMAT_YVU422:
5549 case DRM_FORMAT_YUV444:
5550 case DRM_FORMAT_YVU444:
5553 drm_fb_get_bpp_depth(format, &depth, &bpp);
5557 EXPORT_SYMBOL(drm_format_plane_cpp);
5560 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5561 * @format: pixel format (DRM_FORMAT_*)
5564 * The horizontal chroma subsampling factor for the
5565 * specified pixel format.
5567 int drm_format_horz_chroma_subsampling(uint32_t format)
5570 case DRM_FORMAT_YUV411:
5571 case DRM_FORMAT_YVU411:
5572 case DRM_FORMAT_YUV410:
5573 case DRM_FORMAT_YVU410:
5575 case DRM_FORMAT_YUYV:
5576 case DRM_FORMAT_YVYU:
5577 case DRM_FORMAT_UYVY:
5578 case DRM_FORMAT_VYUY:
5579 case DRM_FORMAT_NV12:
5580 case DRM_FORMAT_NV21:
5581 case DRM_FORMAT_NV16:
5582 case DRM_FORMAT_NV61:
5583 case DRM_FORMAT_YUV422:
5584 case DRM_FORMAT_YVU422:
5585 case DRM_FORMAT_YUV420:
5586 case DRM_FORMAT_YVU420:
5592 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5595 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5596 * @format: pixel format (DRM_FORMAT_*)
5599 * The vertical chroma subsampling factor for the
5600 * specified pixel format.
5602 int drm_format_vert_chroma_subsampling(uint32_t format)
5605 case DRM_FORMAT_YUV410:
5606 case DRM_FORMAT_YVU410:
5608 case DRM_FORMAT_YUV420:
5609 case DRM_FORMAT_YVU420:
5610 case DRM_FORMAT_NV12:
5611 case DRM_FORMAT_NV21:
5617 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
5620 * drm_rotation_simplify() - Try to simplify the rotation
5621 * @rotation: Rotation to be simplified
5622 * @supported_rotations: Supported rotations
5624 * Attempt to simplify the rotation to a form that is supported.
5625 * Eg. if the hardware supports everything except DRM_REFLECT_X
5626 * one could call this function like this:
5628 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5629 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5630 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5632 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5633 * transforms the hardware supports, this function may not
5634 * be able to produce a supported transform, so the caller should
5635 * check the result afterwards.
5637 unsigned int drm_rotation_simplify(unsigned int rotation,
5638 unsigned int supported_rotations)
5640 if (rotation & ~supported_rotations) {
5641 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5642 rotation = (rotation & ~0xf) | BIT((ffs(rotation & 0xf) + 1) % 4);
5647 EXPORT_SYMBOL(drm_rotation_simplify);
5650 * drm_mode_config_init - initialize DRM mode_configuration structure
5653 * Initialize @dev's mode_config structure, used for tracking the graphics
5654 * configuration of @dev.
5656 * Since this initializes the modeset locks, no locking is possible. Which is no
5657 * problem, since this should happen single threaded at init time. It is the
5658 * driver's problem to ensure this guarantee.
5661 void drm_mode_config_init(struct drm_device *dev)
5663 mutex_init(&dev->mode_config.mutex);
5664 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
5665 mutex_init(&dev->mode_config.idr_mutex);
5666 mutex_init(&dev->mode_config.fb_lock);
5667 mutex_init(&dev->mode_config.blob_lock);
5668 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5669 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5670 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5671 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5672 INIT_LIST_HEAD(&dev->mode_config.property_list);
5673 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5674 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5675 idr_init(&dev->mode_config.crtc_idr);
5676 idr_init(&dev->mode_config.tile_idr);
5678 drm_modeset_lock_all(dev);
5679 drm_mode_create_standard_properties(dev);
5680 drm_modeset_unlock_all(dev);
5682 /* Just to be sure */
5683 dev->mode_config.num_fb = 0;
5684 dev->mode_config.num_connector = 0;
5685 dev->mode_config.num_crtc = 0;
5686 dev->mode_config.num_encoder = 0;
5687 dev->mode_config.num_overlay_plane = 0;
5688 dev->mode_config.num_total_plane = 0;
5690 EXPORT_SYMBOL(drm_mode_config_init);
5693 * drm_mode_config_cleanup - free up DRM mode_config info
5696 * Free up all the connectors and CRTCs associated with this DRM device, then
5697 * free up the framebuffers and associated buffer objects.
5699 * Note that since this /should/ happen single-threaded at driver/device
5700 * teardown time, no locking is required. It's the driver's job to ensure that
5701 * this guarantee actually holds true.
5703 * FIXME: cleanup any dangling user buffer objects too
5705 void drm_mode_config_cleanup(struct drm_device *dev)
5707 struct drm_connector *connector, *ot;
5708 struct drm_crtc *crtc, *ct;
5709 struct drm_encoder *encoder, *enct;
5710 struct drm_framebuffer *fb, *fbt;
5711 struct drm_property *property, *pt;
5712 struct drm_property_blob *blob, *bt;
5713 struct drm_plane *plane, *plt;
5715 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5717 encoder->funcs->destroy(encoder);
5720 list_for_each_entry_safe(connector, ot,
5721 &dev->mode_config.connector_list, head) {
5722 connector->funcs->destroy(connector);
5725 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5727 drm_property_destroy(dev, property);
5730 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5732 drm_property_unreference_blob(blob);
5736 * Single-threaded teardown context, so it's not required to grab the
5737 * fb_lock to protect against concurrent fb_list access. Contrary, it
5738 * would actually deadlock with the drm_framebuffer_cleanup function.
5740 * Also, if there are any framebuffers left, that's a driver leak now,
5741 * so politely WARN about this.
5743 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5744 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5745 drm_framebuffer_remove(fb);
5748 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5750 plane->funcs->destroy(plane);
5753 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5754 crtc->funcs->destroy(crtc);
5757 idr_destroy(&dev->mode_config.tile_idr);
5758 idr_destroy(&dev->mode_config.crtc_idr);
5759 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
5761 EXPORT_SYMBOL(drm_mode_config_cleanup);
5763 struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5764 unsigned int supported_rotations)
5766 static const struct drm_prop_enum_list props[] = {
5767 { DRM_ROTATE_0, "rotate-0" },
5768 { DRM_ROTATE_90, "rotate-90" },
5769 { DRM_ROTATE_180, "rotate-180" },
5770 { DRM_ROTATE_270, "rotate-270" },
5771 { DRM_REFLECT_X, "reflect-x" },
5772 { DRM_REFLECT_Y, "reflect-y" },
5775 return drm_property_create_bitmask(dev, 0, "rotation",
5776 props, ARRAY_SIZE(props),
5777 supported_rotations);
5779 EXPORT_SYMBOL(drm_mode_create_rotation_property);
5784 * Tile groups are used to represent tiled monitors with a unique
5785 * integer identifier. Tiled monitors using DisplayID v1.3 have
5786 * a unique 8-byte handle, we store this in a tile group, so we
5787 * have a common identifier for all tiles in a monitor group.
5789 static void drm_tile_group_free(struct kref *kref)
5791 struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
5792 struct drm_device *dev = tg->dev;
5793 mutex_lock(&dev->mode_config.idr_mutex);
5794 idr_remove(&dev->mode_config.tile_idr, tg->id);
5795 mutex_unlock(&dev->mode_config.idr_mutex);
5800 * drm_mode_put_tile_group - drop a reference to a tile group.
5802 * @tg: tile group to drop reference to.
5804 * drop reference to tile group and free if 0.
5806 void drm_mode_put_tile_group(struct drm_device *dev,
5807 struct drm_tile_group *tg)
5809 kref_put(&tg->refcount, drm_tile_group_free);
5813 * drm_mode_get_tile_group - get a reference to an existing tile group
5815 * @topology: 8-bytes unique per monitor.
5817 * Use the unique bytes to get a reference to an existing tile group.
5820 * tile group or NULL if not found.
5822 struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
5825 struct drm_tile_group *tg;
5827 mutex_lock(&dev->mode_config.idr_mutex);
5828 idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
5829 if (!memcmp(tg->group_data, topology, 8)) {
5830 if (!kref_get_unless_zero(&tg->refcount))
5832 mutex_unlock(&dev->mode_config.idr_mutex);
5836 mutex_unlock(&dev->mode_config.idr_mutex);
5839 EXPORT_SYMBOL(drm_mode_get_tile_group);
5842 * drm_mode_create_tile_group - create a tile group from a displayid description
5844 * @topology: 8-bytes unique per monitor.
5846 * Create a tile group for the unique monitor, and get a unique
5847 * identifier for the tile group.
5850 * new tile group or error.
5852 struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
5855 struct drm_tile_group *tg;
5858 tg = kzalloc(sizeof(*tg), GFP_KERNEL);
5860 return ERR_PTR(-ENOMEM);
5862 kref_init(&tg->refcount);
5863 memcpy(tg->group_data, topology, 8);
5866 mutex_lock(&dev->mode_config.idr_mutex);
5867 ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
5875 mutex_unlock(&dev->mode_config.idr_mutex);
5878 EXPORT_SYMBOL(drm_mode_create_tile_group);