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 * Zero on success, error code on failure.
311 int drm_mode_object_get(struct drm_device *dev,
312 struct drm_mode_object *obj, uint32_t obj_type)
314 return drm_mode_object_get_reg(dev, obj, obj_type, true);
317 static void drm_mode_object_register(struct drm_device *dev,
318 struct drm_mode_object *obj)
320 mutex_lock(&dev->mode_config.idr_mutex);
321 idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
322 mutex_unlock(&dev->mode_config.idr_mutex);
326 * drm_mode_object_put - free a modeset identifer
328 * @object: object to free
330 * Free @id from @dev's unique identifier pool. Note that despite the _get
331 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
332 * for reference counted modeset objects like framebuffers.
334 void drm_mode_object_put(struct drm_device *dev,
335 struct drm_mode_object *object)
337 mutex_lock(&dev->mode_config.idr_mutex);
338 idr_remove(&dev->mode_config.crtc_idr, object->id);
339 mutex_unlock(&dev->mode_config.idr_mutex);
342 static struct drm_mode_object *_object_find(struct drm_device *dev,
343 uint32_t id, uint32_t type)
345 struct drm_mode_object *obj = NULL;
347 mutex_lock(&dev->mode_config.idr_mutex);
348 obj = idr_find(&dev->mode_config.crtc_idr, id);
349 if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
351 if (obj && obj->id != id)
353 /* don't leak out unref'd fb's */
355 (obj->type == DRM_MODE_OBJECT_FB ||
356 obj->type == DRM_MODE_OBJECT_BLOB))
358 mutex_unlock(&dev->mode_config.idr_mutex);
364 * drm_mode_object_find - look up a drm object with static lifetime
366 * @id: id of the mode object
367 * @type: type of the mode object
369 * Note that framebuffers cannot be looked up with this functions - since those
370 * are reference counted, they need special treatment. Even with
371 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
372 * rather than WARN_ON()).
374 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
375 uint32_t id, uint32_t type)
377 struct drm_mode_object *obj = NULL;
379 /* Framebuffers are reference counted and need their own lookup
381 WARN_ON(type == DRM_MODE_OBJECT_FB || type == DRM_MODE_OBJECT_BLOB);
382 obj = _object_find(dev, id, type);
385 EXPORT_SYMBOL(drm_mode_object_find);
388 * drm_framebuffer_init - initialize a framebuffer
390 * @fb: framebuffer to be initialized
391 * @funcs: ... with these functions
393 * Allocates an ID for the framebuffer's parent mode object, sets its mode
394 * functions & device file and adds it to the master fd list.
397 * This functions publishes the fb and makes it available for concurrent access
398 * by other users. Which means by this point the fb _must_ be fully set up -
399 * since all the fb attributes are invariant over its lifetime, no further
400 * locking but only correct reference counting is required.
403 * Zero on success, error code on failure.
405 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
406 const struct drm_framebuffer_funcs *funcs)
410 mutex_lock(&dev->mode_config.fb_lock);
411 kref_init(&fb->refcount);
412 INIT_LIST_HEAD(&fb->filp_head);
416 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
420 dev->mode_config.num_fb++;
421 list_add(&fb->head, &dev->mode_config.fb_list);
423 mutex_unlock(&dev->mode_config.fb_lock);
427 EXPORT_SYMBOL(drm_framebuffer_init);
429 /* dev->mode_config.fb_lock must be held! */
430 static void __drm_framebuffer_unregister(struct drm_device *dev,
431 struct drm_framebuffer *fb)
433 mutex_lock(&dev->mode_config.idr_mutex);
434 idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
435 mutex_unlock(&dev->mode_config.idr_mutex);
440 static void drm_framebuffer_free(struct kref *kref)
442 struct drm_framebuffer *fb =
443 container_of(kref, struct drm_framebuffer, refcount);
444 struct drm_device *dev = fb->dev;
447 * The lookup idr holds a weak reference, which has not necessarily been
448 * removed at this point. Check for that.
450 mutex_lock(&dev->mode_config.fb_lock);
452 /* Mark fb as reaped and drop idr ref. */
453 __drm_framebuffer_unregister(dev, fb);
455 mutex_unlock(&dev->mode_config.fb_lock);
457 fb->funcs->destroy(fb);
460 static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
463 struct drm_mode_object *obj = NULL;
464 struct drm_framebuffer *fb;
466 mutex_lock(&dev->mode_config.idr_mutex);
467 obj = idr_find(&dev->mode_config.crtc_idr, id);
468 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
472 mutex_unlock(&dev->mode_config.idr_mutex);
478 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
480 * @id: id of the fb object
482 * If successful, this grabs an additional reference to the framebuffer -
483 * callers need to make sure to eventually unreference the returned framebuffer
484 * again, using @drm_framebuffer_unreference.
486 struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
489 struct drm_framebuffer *fb;
491 mutex_lock(&dev->mode_config.fb_lock);
492 fb = __drm_framebuffer_lookup(dev, id);
494 if (!kref_get_unless_zero(&fb->refcount))
497 mutex_unlock(&dev->mode_config.fb_lock);
501 EXPORT_SYMBOL(drm_framebuffer_lookup);
504 * drm_framebuffer_unreference - unref a framebuffer
505 * @fb: framebuffer to unref
507 * This functions decrements the fb's refcount and frees it if it drops to zero.
509 void drm_framebuffer_unreference(struct drm_framebuffer *fb)
511 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
512 kref_put(&fb->refcount, drm_framebuffer_free);
514 EXPORT_SYMBOL(drm_framebuffer_unreference);
517 * drm_framebuffer_reference - incr the fb refcnt
520 * This functions increments the fb's refcount.
522 void drm_framebuffer_reference(struct drm_framebuffer *fb)
524 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
525 kref_get(&fb->refcount);
527 EXPORT_SYMBOL(drm_framebuffer_reference);
530 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
531 * @fb: fb to unregister
533 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
534 * those used for fbdev. Note that the caller must hold a reference of it's own,
535 * i.e. the object may not be destroyed through this call (since it'll lead to a
536 * locking inversion).
538 void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
540 struct drm_device *dev;
547 mutex_lock(&dev->mode_config.fb_lock);
548 /* Mark fb as reaped and drop idr ref. */
549 __drm_framebuffer_unregister(dev, fb);
550 mutex_unlock(&dev->mode_config.fb_lock);
552 EXPORT_SYMBOL(drm_framebuffer_unregister_private);
555 * drm_framebuffer_cleanup - remove a framebuffer object
556 * @fb: framebuffer to remove
558 * Cleanup framebuffer. This function is intended to be used from the drivers
559 * ->destroy callback. It can also be used to clean up driver private
560 * framebuffers embedded into a larger structure.
562 * Note that this function does not remove the fb from active usuage - if it is
563 * still used anywhere, hilarity can ensue since userspace could call getfb on
564 * the id and get back -EINVAL. Obviously no concern at driver unload time.
566 * Also, the framebuffer will not be removed from the lookup idr - for
567 * user-created framebuffers this will happen in in the rmfb ioctl. For
568 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
569 * drm_framebuffer_unregister_private.
571 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
573 struct drm_device *dev = fb->dev;
575 mutex_lock(&dev->mode_config.fb_lock);
577 dev->mode_config.num_fb--;
578 mutex_unlock(&dev->mode_config.fb_lock);
580 EXPORT_SYMBOL(drm_framebuffer_cleanup);
583 * drm_framebuffer_remove - remove and unreference a framebuffer object
584 * @fb: framebuffer to remove
586 * Scans all the CRTCs and planes in @dev's mode_config. If they're
587 * using @fb, removes it, setting it to NULL. Then drops the reference to the
588 * passed-in framebuffer. Might take the modeset locks.
590 * Note that this function optimizes the cleanup away if the caller holds the
591 * last reference to the framebuffer. It is also guaranteed to not take the
592 * modeset locks in this case.
594 void drm_framebuffer_remove(struct drm_framebuffer *fb)
596 struct drm_device *dev;
597 struct drm_crtc *crtc;
598 struct drm_plane *plane;
599 struct drm_mode_set set;
607 WARN_ON(!list_empty(&fb->filp_head));
610 * drm ABI mandates that we remove any deleted framebuffers from active
611 * useage. But since most sane clients only remove framebuffers they no
612 * longer need, try to optimize this away.
614 * Since we're holding a reference ourselves, observing a refcount of 1
615 * means that we're the last holder and can skip it. Also, the refcount
616 * can never increase from 1 again, so we don't need any barriers or
619 * Note that userspace could try to race with use and instate a new
620 * usage _after_ we've cleared all current ones. End result will be an
621 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
624 if (atomic_read(&fb->refcount.refcount) > 1) {
625 drm_modeset_lock_all(dev);
626 /* remove from any CRTC */
627 drm_for_each_crtc(crtc, dev) {
628 if (crtc->primary->fb == fb) {
629 /* should turn off the crtc */
630 memset(&set, 0, sizeof(struct drm_mode_set));
633 ret = drm_mode_set_config_internal(&set);
635 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
639 drm_for_each_plane(plane, dev) {
641 drm_plane_force_disable(plane);
643 drm_modeset_unlock_all(dev);
646 drm_framebuffer_unreference(fb);
648 EXPORT_SYMBOL(drm_framebuffer_remove);
650 DEFINE_WW_CLASS(crtc_ww_class);
653 * drm_crtc_init_with_planes - Initialise a new CRTC object with
654 * specified primary and cursor planes.
656 * @crtc: CRTC object to init
657 * @primary: Primary plane for CRTC
658 * @cursor: Cursor plane for CRTC
659 * @funcs: callbacks for the new CRTC
661 * Inits a new object created as base part of a driver crtc object.
664 * Zero on success, error code on failure.
666 int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
667 struct drm_plane *primary,
668 struct drm_plane *cursor,
669 const struct drm_crtc_funcs *funcs)
671 struct drm_mode_config *config = &dev->mode_config;
674 WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY);
675 WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR);
680 drm_modeset_lock_init(&crtc->mutex);
681 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
685 crtc->base.properties = &crtc->properties;
687 list_add_tail(&crtc->head, &config->crtc_list);
690 crtc->primary = primary;
691 crtc->cursor = cursor;
693 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
695 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
697 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
698 drm_object_attach_property(&crtc->base, config->prop_active, 0);
699 drm_object_attach_property(&crtc->base, config->prop_mode_id, 0);
704 EXPORT_SYMBOL(drm_crtc_init_with_planes);
707 * drm_crtc_cleanup - Clean up the core crtc usage
708 * @crtc: CRTC to cleanup
710 * This function cleans up @crtc and removes it from the DRM mode setting
711 * core. Note that the function does *not* free the crtc structure itself,
712 * this is the responsibility of the caller.
714 void drm_crtc_cleanup(struct drm_crtc *crtc)
716 struct drm_device *dev = crtc->dev;
718 kfree(crtc->gamma_store);
719 crtc->gamma_store = NULL;
721 drm_modeset_lock_fini(&crtc->mutex);
723 drm_mode_object_put(dev, &crtc->base);
724 list_del(&crtc->head);
725 dev->mode_config.num_crtc--;
727 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
728 if (crtc->state && crtc->funcs->atomic_destroy_state)
729 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
731 memset(crtc, 0, sizeof(*crtc));
733 EXPORT_SYMBOL(drm_crtc_cleanup);
736 * drm_crtc_index - find the index of a registered CRTC
737 * @crtc: CRTC to find index for
739 * Given a registered CRTC, return the index of that CRTC within a DRM
740 * device's list of CRTCs.
742 unsigned int drm_crtc_index(struct drm_crtc *crtc)
744 unsigned int index = 0;
745 struct drm_crtc *tmp;
747 drm_for_each_crtc(tmp, crtc->dev) {
756 EXPORT_SYMBOL(drm_crtc_index);
759 * drm_mode_remove - remove and free a mode
760 * @connector: connector list to modify
761 * @mode: mode to remove
763 * Remove @mode from @connector's mode list, then free it.
765 static void drm_mode_remove(struct drm_connector *connector,
766 struct drm_display_mode *mode)
768 list_del(&mode->head);
769 drm_mode_destroy(connector->dev, mode);
773 * drm_display_info_set_bus_formats - set the supported bus formats
774 * @info: display info to store bus formats in
775 * @formats: array containing the supported bus formats
776 * @num_formats: the number of entries in the fmts array
778 * Store the supported bus formats in display info structure.
779 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
780 * a full list of available formats.
782 int drm_display_info_set_bus_formats(struct drm_display_info *info,
784 unsigned int num_formats)
788 if (!formats && num_formats)
791 if (formats && num_formats) {
792 fmts = kmemdup(formats, sizeof(*formats) * num_formats,
798 kfree(info->bus_formats);
799 info->bus_formats = fmts;
800 info->num_bus_formats = num_formats;
804 EXPORT_SYMBOL(drm_display_info_set_bus_formats);
807 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
808 * @connector: connector to quwery
810 * The kernel supports per-connector configration of its consoles through
811 * use of the video= parameter. This function parses that option and
812 * extracts the user's specified mode (or enable/disable status) for a
813 * particular connector. This is typically only used during the early fbdev
816 static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
818 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
821 if (fb_get_options(connector->name, &option))
824 if (!drm_mode_parse_command_line_for_connector(option,
832 switch (mode->force) {
836 case DRM_FORCE_ON_DIGITAL:
845 DRM_INFO("forcing %s connector %s\n", connector->name, s);
846 connector->force = mode->force;
849 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
851 mode->xres, mode->yres,
852 mode->refresh_specified ? mode->refresh : 60,
853 mode->rb ? " reduced blanking" : "",
854 mode->margins ? " with margins" : "",
855 mode->interlace ? " interlaced" : "");
859 * drm_connector_init - Init a preallocated connector
861 * @connector: the connector to init
862 * @funcs: callbacks for this connector
863 * @connector_type: user visible type of the connector
865 * Initialises a preallocated connector. Connectors should be
866 * subclassed as part of driver connector objects.
869 * Zero on success, error code on failure.
871 int drm_connector_init(struct drm_device *dev,
872 struct drm_connector *connector,
873 const struct drm_connector_funcs *funcs,
876 struct drm_mode_config *config = &dev->mode_config;
878 struct ida *connector_ida =
879 &drm_connector_enum_list[connector_type].ida;
881 drm_modeset_lock_all(dev);
883 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false);
887 connector->base.properties = &connector->properties;
888 connector->dev = dev;
889 connector->funcs = funcs;
890 connector->connector_type = connector_type;
891 connector->connector_type_id =
892 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
893 if (connector->connector_type_id < 0) {
894 ret = connector->connector_type_id;
898 kasprintf(GFP_KERNEL, "%s-%d",
899 drm_connector_enum_list[connector_type].name,
900 connector->connector_type_id);
901 if (!connector->name) {
906 INIT_LIST_HEAD(&connector->probed_modes);
907 INIT_LIST_HEAD(&connector->modes);
908 connector->edid_blob_ptr = NULL;
909 connector->status = connector_status_unknown;
911 drm_connector_get_cmdline_mode(connector);
913 /* We should add connectors at the end to avoid upsetting the connector
915 list_add_tail(&connector->head, &config->connector_list);
916 config->num_connector++;
918 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
919 drm_object_attach_property(&connector->base,
920 config->edid_property,
923 drm_object_attach_property(&connector->base,
924 config->dpms_property, 0);
926 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
927 drm_object_attach_property(&connector->base, config->prop_crtc_id, 0);
930 connector->debugfs_entry = NULL;
934 drm_mode_object_put(dev, &connector->base);
937 drm_modeset_unlock_all(dev);
941 EXPORT_SYMBOL(drm_connector_init);
944 * drm_connector_cleanup - cleans up an initialised connector
945 * @connector: connector to cleanup
947 * Cleans up the connector but doesn't free the object.
949 void drm_connector_cleanup(struct drm_connector *connector)
951 struct drm_device *dev = connector->dev;
952 struct drm_display_mode *mode, *t;
954 if (connector->tile_group) {
955 drm_mode_put_tile_group(dev, connector->tile_group);
956 connector->tile_group = NULL;
959 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
960 drm_mode_remove(connector, mode);
962 list_for_each_entry_safe(mode, t, &connector->modes, head)
963 drm_mode_remove(connector, mode);
965 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
966 connector->connector_type_id);
968 kfree(connector->display_info.bus_formats);
969 drm_mode_object_put(dev, &connector->base);
970 kfree(connector->name);
971 connector->name = NULL;
972 list_del(&connector->head);
973 dev->mode_config.num_connector--;
975 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
976 if (connector->state && connector->funcs->atomic_destroy_state)
977 connector->funcs->atomic_destroy_state(connector,
980 memset(connector, 0, sizeof(*connector));
982 EXPORT_SYMBOL(drm_connector_cleanup);
985 * drm_connector_index - find the index of a registered connector
986 * @connector: connector to find index for
988 * Given a registered connector, return the index of that connector within a DRM
989 * device's list of connectors.
991 unsigned int drm_connector_index(struct drm_connector *connector)
993 unsigned int index = 0;
994 struct drm_connector *tmp;
995 struct drm_mode_config *config = &connector->dev->mode_config;
997 WARN_ON(!drm_modeset_is_locked(&config->connection_mutex));
999 drm_for_each_connector(tmp, connector->dev) {
1000 if (tmp == connector)
1008 EXPORT_SYMBOL(drm_connector_index);
1011 * drm_connector_register - register a connector
1012 * @connector: the connector to register
1014 * Register userspace interfaces for a connector
1017 * Zero on success, error code on failure.
1019 int drm_connector_register(struct drm_connector *connector)
1023 drm_mode_object_register(connector->dev, &connector->base);
1025 ret = drm_sysfs_connector_add(connector);
1029 ret = drm_debugfs_connector_add(connector);
1031 drm_sysfs_connector_remove(connector);
1037 EXPORT_SYMBOL(drm_connector_register);
1040 * drm_connector_unregister - unregister a connector
1041 * @connector: the connector to unregister
1043 * Unregister userspace interfaces for a connector
1045 void drm_connector_unregister(struct drm_connector *connector)
1047 drm_sysfs_connector_remove(connector);
1048 drm_debugfs_connector_remove(connector);
1050 EXPORT_SYMBOL(drm_connector_unregister);
1054 * drm_connector_unplug_all - unregister connector userspace interfaces
1057 * This function unregisters all connector userspace interfaces in sysfs. Should
1058 * be call when the device is disconnected, e.g. from an usb driver's
1059 * ->disconnect callback.
1061 void drm_connector_unplug_all(struct drm_device *dev)
1063 struct drm_connector *connector;
1065 /* FIXME: taking the mode config mutex ends up in a clash with sysfs */
1066 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1067 drm_connector_unregister(connector);
1070 EXPORT_SYMBOL(drm_connector_unplug_all);
1073 * drm_encoder_init - Init a preallocated encoder
1075 * @encoder: the encoder to init
1076 * @funcs: callbacks for this encoder
1077 * @encoder_type: user visible type of the encoder
1079 * Initialises a preallocated encoder. Encoder should be
1080 * subclassed as part of driver encoder objects.
1083 * Zero on success, error code on failure.
1085 int drm_encoder_init(struct drm_device *dev,
1086 struct drm_encoder *encoder,
1087 const struct drm_encoder_funcs *funcs,
1092 drm_modeset_lock_all(dev);
1094 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1099 encoder->encoder_type = encoder_type;
1100 encoder->funcs = funcs;
1101 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1102 drm_encoder_enum_list[encoder_type].name,
1104 if (!encoder->name) {
1109 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1110 dev->mode_config.num_encoder++;
1114 drm_mode_object_put(dev, &encoder->base);
1117 drm_modeset_unlock_all(dev);
1121 EXPORT_SYMBOL(drm_encoder_init);
1124 * drm_encoder_cleanup - cleans up an initialised encoder
1125 * @encoder: encoder to cleanup
1127 * Cleans up the encoder but doesn't free the object.
1129 void drm_encoder_cleanup(struct drm_encoder *encoder)
1131 struct drm_device *dev = encoder->dev;
1133 drm_modeset_lock_all(dev);
1134 drm_mode_object_put(dev, &encoder->base);
1135 kfree(encoder->name);
1136 list_del(&encoder->head);
1137 dev->mode_config.num_encoder--;
1138 drm_modeset_unlock_all(dev);
1140 memset(encoder, 0, sizeof(*encoder));
1142 EXPORT_SYMBOL(drm_encoder_cleanup);
1145 * drm_universal_plane_init - Initialize a new universal plane object
1147 * @plane: plane object to init
1148 * @possible_crtcs: bitmask of possible CRTCs
1149 * @funcs: callbacks for the new plane
1150 * @formats: array of supported formats (%DRM_FORMAT_*)
1151 * @format_count: number of elements in @formats
1152 * @type: type of plane (overlay, primary, cursor)
1154 * Initializes a plane object of type @type.
1157 * Zero on success, error code on failure.
1159 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1160 unsigned long possible_crtcs,
1161 const struct drm_plane_funcs *funcs,
1162 const uint32_t *formats, unsigned int format_count,
1163 enum drm_plane_type type)
1165 struct drm_mode_config *config = &dev->mode_config;
1168 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1172 drm_modeset_lock_init(&plane->mutex);
1174 plane->base.properties = &plane->properties;
1176 plane->funcs = funcs;
1177 plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
1179 if (!plane->format_types) {
1180 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1181 drm_mode_object_put(dev, &plane->base);
1185 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1186 plane->format_count = format_count;
1187 plane->possible_crtcs = possible_crtcs;
1190 list_add_tail(&plane->head, &config->plane_list);
1191 config->num_total_plane++;
1192 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1193 config->num_overlay_plane++;
1195 drm_object_attach_property(&plane->base,
1196 config->plane_type_property,
1199 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
1200 drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
1201 drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
1202 drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
1203 drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
1204 drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
1205 drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
1206 drm_object_attach_property(&plane->base, config->prop_src_x, 0);
1207 drm_object_attach_property(&plane->base, config->prop_src_y, 0);
1208 drm_object_attach_property(&plane->base, config->prop_src_w, 0);
1209 drm_object_attach_property(&plane->base, config->prop_src_h, 0);
1214 EXPORT_SYMBOL(drm_universal_plane_init);
1217 * drm_plane_init - Initialize a legacy plane
1219 * @plane: plane object to init
1220 * @possible_crtcs: bitmask of possible CRTCs
1221 * @funcs: callbacks for the new plane
1222 * @formats: array of supported formats (%DRM_FORMAT_*)
1223 * @format_count: number of elements in @formats
1224 * @is_primary: plane type (primary vs overlay)
1226 * Legacy API to initialize a DRM plane.
1228 * New drivers should call drm_universal_plane_init() instead.
1231 * Zero on success, error code on failure.
1233 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1234 unsigned long possible_crtcs,
1235 const struct drm_plane_funcs *funcs,
1236 const uint32_t *formats, unsigned int format_count,
1239 enum drm_plane_type type;
1241 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1242 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1243 formats, format_count, type);
1245 EXPORT_SYMBOL(drm_plane_init);
1248 * drm_plane_cleanup - Clean up the core plane usage
1249 * @plane: plane to cleanup
1251 * This function cleans up @plane and removes it from the DRM mode setting
1252 * core. Note that the function does *not* free the plane structure itself,
1253 * this is the responsibility of the caller.
1255 void drm_plane_cleanup(struct drm_plane *plane)
1257 struct drm_device *dev = plane->dev;
1259 drm_modeset_lock_all(dev);
1260 kfree(plane->format_types);
1261 drm_mode_object_put(dev, &plane->base);
1263 BUG_ON(list_empty(&plane->head));
1265 list_del(&plane->head);
1266 dev->mode_config.num_total_plane--;
1267 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1268 dev->mode_config.num_overlay_plane--;
1269 drm_modeset_unlock_all(dev);
1271 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1272 if (plane->state && plane->funcs->atomic_destroy_state)
1273 plane->funcs->atomic_destroy_state(plane, plane->state);
1275 memset(plane, 0, sizeof(*plane));
1277 EXPORT_SYMBOL(drm_plane_cleanup);
1280 * drm_plane_index - find the index of a registered plane
1281 * @plane: plane to find index for
1283 * Given a registered plane, return the index of that CRTC within a DRM
1284 * device's list of planes.
1286 unsigned int drm_plane_index(struct drm_plane *plane)
1288 unsigned int index = 0;
1289 struct drm_plane *tmp;
1291 drm_for_each_plane(tmp, plane->dev) {
1300 EXPORT_SYMBOL(drm_plane_index);
1303 * drm_plane_from_index - find the registered plane at an index
1305 * @idx: index of registered plane to find for
1307 * Given a plane index, return the registered plane from DRM device's
1308 * list of planes with matching index.
1311 drm_plane_from_index(struct drm_device *dev, int idx)
1313 struct drm_plane *plane;
1316 drm_for_each_plane(plane, dev) {
1323 EXPORT_SYMBOL(drm_plane_from_index);
1326 * drm_plane_force_disable - Forcibly disable a plane
1327 * @plane: plane to disable
1329 * Forces the plane to be disabled.
1331 * Used when the plane's current framebuffer is destroyed,
1332 * and when restoring fbdev mode.
1334 void drm_plane_force_disable(struct drm_plane *plane)
1341 plane->old_fb = plane->fb;
1342 ret = plane->funcs->disable_plane(plane);
1344 DRM_ERROR("failed to disable plane with busy fb\n");
1345 plane->old_fb = NULL;
1348 /* disconnect the plane from the fb and crtc: */
1349 drm_framebuffer_unreference(plane->old_fb);
1350 plane->old_fb = NULL;
1354 EXPORT_SYMBOL(drm_plane_force_disable);
1356 static int drm_mode_create_standard_properties(struct drm_device *dev)
1358 struct drm_property *prop;
1361 * Standard properties (apply to all connectors)
1363 prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1364 DRM_MODE_PROP_IMMUTABLE,
1368 dev->mode_config.edid_property = prop;
1370 prop = drm_property_create_enum(dev, 0,
1371 "DPMS", drm_dpms_enum_list,
1372 ARRAY_SIZE(drm_dpms_enum_list));
1375 dev->mode_config.dpms_property = prop;
1377 prop = drm_property_create(dev,
1378 DRM_MODE_PROP_BLOB |
1379 DRM_MODE_PROP_IMMUTABLE,
1383 dev->mode_config.path_property = prop;
1385 prop = drm_property_create(dev,
1386 DRM_MODE_PROP_BLOB |
1387 DRM_MODE_PROP_IMMUTABLE,
1391 dev->mode_config.tile_property = prop;
1393 prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1394 "type", drm_plane_type_enum_list,
1395 ARRAY_SIZE(drm_plane_type_enum_list));
1398 dev->mode_config.plane_type_property = prop;
1400 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1401 "SRC_X", 0, UINT_MAX);
1404 dev->mode_config.prop_src_x = prop;
1406 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1407 "SRC_Y", 0, UINT_MAX);
1410 dev->mode_config.prop_src_y = prop;
1412 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1413 "SRC_W", 0, UINT_MAX);
1416 dev->mode_config.prop_src_w = prop;
1418 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1419 "SRC_H", 0, UINT_MAX);
1422 dev->mode_config.prop_src_h = prop;
1424 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1425 "CRTC_X", INT_MIN, INT_MAX);
1428 dev->mode_config.prop_crtc_x = prop;
1430 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1431 "CRTC_Y", INT_MIN, INT_MAX);
1434 dev->mode_config.prop_crtc_y = prop;
1436 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1437 "CRTC_W", 0, INT_MAX);
1440 dev->mode_config.prop_crtc_w = prop;
1442 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1443 "CRTC_H", 0, INT_MAX);
1446 dev->mode_config.prop_crtc_h = prop;
1448 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1449 "FB_ID", DRM_MODE_OBJECT_FB);
1452 dev->mode_config.prop_fb_id = prop;
1454 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1455 "CRTC_ID", DRM_MODE_OBJECT_CRTC);
1458 dev->mode_config.prop_crtc_id = prop;
1460 prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
1464 dev->mode_config.prop_active = prop;
1466 prop = drm_property_create(dev,
1467 DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB,
1471 dev->mode_config.prop_mode_id = prop;
1477 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1480 * Called by a driver the first time a DVI-I connector is made.
1482 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1484 struct drm_property *dvi_i_selector;
1485 struct drm_property *dvi_i_subconnector;
1487 if (dev->mode_config.dvi_i_select_subconnector_property)
1491 drm_property_create_enum(dev, 0,
1492 "select subconnector",
1493 drm_dvi_i_select_enum_list,
1494 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1495 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1497 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1499 drm_dvi_i_subconnector_enum_list,
1500 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1501 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1505 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1508 * drm_create_tv_properties - create TV specific connector properties
1510 * @num_modes: number of different TV formats (modes) supported
1511 * @modes: array of pointers to strings containing name of each format
1513 * Called by a driver's TV initialization routine, this function creates
1514 * the TV specific connector properties for a given device. Caller is
1515 * responsible for allocating a list of format names and passing them to
1518 int drm_mode_create_tv_properties(struct drm_device *dev,
1519 unsigned int num_modes,
1520 const char * const modes[])
1522 struct drm_property *tv_selector;
1523 struct drm_property *tv_subconnector;
1526 if (dev->mode_config.tv_select_subconnector_property)
1530 * Basic connector properties
1532 tv_selector = drm_property_create_enum(dev, 0,
1533 "select subconnector",
1534 drm_tv_select_enum_list,
1535 ARRAY_SIZE(drm_tv_select_enum_list));
1536 dev->mode_config.tv_select_subconnector_property = tv_selector;
1539 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1541 drm_tv_subconnector_enum_list,
1542 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1543 dev->mode_config.tv_subconnector_property = tv_subconnector;
1546 * Other, TV specific properties: margins & TV modes.
1548 dev->mode_config.tv_left_margin_property =
1549 drm_property_create_range(dev, 0, "left margin", 0, 100);
1551 dev->mode_config.tv_right_margin_property =
1552 drm_property_create_range(dev, 0, "right margin", 0, 100);
1554 dev->mode_config.tv_top_margin_property =
1555 drm_property_create_range(dev, 0, "top margin", 0, 100);
1557 dev->mode_config.tv_bottom_margin_property =
1558 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1560 dev->mode_config.tv_mode_property =
1561 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1563 for (i = 0; i < num_modes; i++)
1564 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1567 dev->mode_config.tv_brightness_property =
1568 drm_property_create_range(dev, 0, "brightness", 0, 100);
1570 dev->mode_config.tv_contrast_property =
1571 drm_property_create_range(dev, 0, "contrast", 0, 100);
1573 dev->mode_config.tv_flicker_reduction_property =
1574 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1576 dev->mode_config.tv_overscan_property =
1577 drm_property_create_range(dev, 0, "overscan", 0, 100);
1579 dev->mode_config.tv_saturation_property =
1580 drm_property_create_range(dev, 0, "saturation", 0, 100);
1582 dev->mode_config.tv_hue_property =
1583 drm_property_create_range(dev, 0, "hue", 0, 100);
1587 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1590 * drm_mode_create_scaling_mode_property - create scaling mode property
1593 * Called by a driver the first time it's needed, must be attached to desired
1596 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1598 struct drm_property *scaling_mode;
1600 if (dev->mode_config.scaling_mode_property)
1604 drm_property_create_enum(dev, 0, "scaling mode",
1605 drm_scaling_mode_enum_list,
1606 ARRAY_SIZE(drm_scaling_mode_enum_list));
1608 dev->mode_config.scaling_mode_property = scaling_mode;
1612 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1615 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1618 * Called by a driver the first time it's needed, must be attached to desired
1622 * Zero on success, negative errno on failure.
1624 int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1626 if (dev->mode_config.aspect_ratio_property)
1629 dev->mode_config.aspect_ratio_property =
1630 drm_property_create_enum(dev, 0, "aspect ratio",
1631 drm_aspect_ratio_enum_list,
1632 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1634 if (dev->mode_config.aspect_ratio_property == NULL)
1639 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1642 * drm_mode_create_dirty_property - create dirty property
1645 * Called by a driver the first time it's needed, must be attached to desired
1648 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1650 struct drm_property *dirty_info;
1652 if (dev->mode_config.dirty_info_property)
1656 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1658 drm_dirty_info_enum_list,
1659 ARRAY_SIZE(drm_dirty_info_enum_list));
1660 dev->mode_config.dirty_info_property = dirty_info;
1664 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1667 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1670 * Create the the suggested x/y offset property for connectors.
1672 int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1674 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1677 dev->mode_config.suggested_x_property =
1678 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1680 dev->mode_config.suggested_y_property =
1681 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1683 if (dev->mode_config.suggested_x_property == NULL ||
1684 dev->mode_config.suggested_y_property == NULL)
1688 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1691 * drm_mode_getresources - get graphics configuration
1692 * @dev: drm device for the ioctl
1693 * @data: data pointer for the ioctl
1694 * @file_priv: drm file for the ioctl call
1696 * Construct a set of configuration description structures and return
1697 * them to the user, including CRTC, connector and framebuffer configuration.
1699 * Called by the user via ioctl.
1702 * Zero on success, negative errno on failure.
1704 int drm_mode_getresources(struct drm_device *dev, void *data,
1705 struct drm_file *file_priv)
1707 struct drm_mode_card_res *card_res = data;
1708 struct list_head *lh;
1709 struct drm_framebuffer *fb;
1710 struct drm_connector *connector;
1711 struct drm_crtc *crtc;
1712 struct drm_encoder *encoder;
1714 int connector_count = 0;
1717 int encoder_count = 0;
1719 uint32_t __user *fb_id;
1720 uint32_t __user *crtc_id;
1721 uint32_t __user *connector_id;
1722 uint32_t __user *encoder_id;
1724 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1728 mutex_lock(&file_priv->fbs_lock);
1730 * For the non-control nodes we need to limit the list of resources
1731 * by IDs in the group list for this node
1733 list_for_each(lh, &file_priv->fbs)
1736 /* handle this in 4 parts */
1738 if (card_res->count_fbs >= fb_count) {
1740 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1741 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1742 if (put_user(fb->base.id, fb_id + copied)) {
1743 mutex_unlock(&file_priv->fbs_lock);
1749 card_res->count_fbs = fb_count;
1750 mutex_unlock(&file_priv->fbs_lock);
1752 /* mode_config.mutex protects the connector list against e.g. DP MST
1753 * connector hot-adding. CRTC/Plane lists are invariant. */
1754 mutex_lock(&dev->mode_config.mutex);
1755 drm_for_each_crtc(crtc, dev)
1758 drm_for_each_connector(connector, dev)
1761 drm_for_each_encoder(encoder, dev)
1764 card_res->max_height = dev->mode_config.max_height;
1765 card_res->min_height = dev->mode_config.min_height;
1766 card_res->max_width = dev->mode_config.max_width;
1767 card_res->min_width = dev->mode_config.min_width;
1770 if (card_res->count_crtcs >= crtc_count) {
1772 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1773 drm_for_each_crtc(crtc, dev) {
1774 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1775 if (put_user(crtc->base.id, crtc_id + copied)) {
1782 card_res->count_crtcs = crtc_count;
1785 if (card_res->count_encoders >= encoder_count) {
1787 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1788 drm_for_each_encoder(encoder, dev) {
1789 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1791 if (put_user(encoder->base.id, encoder_id +
1799 card_res->count_encoders = encoder_count;
1802 if (card_res->count_connectors >= connector_count) {
1804 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1805 drm_for_each_connector(connector, dev) {
1806 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1809 if (put_user(connector->base.id,
1810 connector_id + copied)) {
1817 card_res->count_connectors = connector_count;
1819 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1820 card_res->count_connectors, card_res->count_encoders);
1823 mutex_unlock(&dev->mode_config.mutex);
1828 * drm_mode_getcrtc - get CRTC configuration
1829 * @dev: drm device for the ioctl
1830 * @data: data pointer for the ioctl
1831 * @file_priv: drm file for the ioctl call
1833 * Construct a CRTC configuration structure to return to the user.
1835 * Called by the user via ioctl.
1838 * Zero on success, negative errno on failure.
1840 int drm_mode_getcrtc(struct drm_device *dev,
1841 void *data, struct drm_file *file_priv)
1843 struct drm_mode_crtc *crtc_resp = data;
1844 struct drm_crtc *crtc;
1846 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1849 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
1853 drm_modeset_lock_crtc(crtc, crtc->primary);
1854 crtc_resp->gamma_size = crtc->gamma_size;
1855 if (crtc->primary->fb)
1856 crtc_resp->fb_id = crtc->primary->fb->base.id;
1858 crtc_resp->fb_id = 0;
1861 crtc_resp->x = crtc->primary->state->src_x >> 16;
1862 crtc_resp->y = crtc->primary->state->src_y >> 16;
1863 if (crtc->state->enable) {
1864 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode);
1865 crtc_resp->mode_valid = 1;
1868 crtc_resp->mode_valid = 0;
1871 crtc_resp->x = crtc->x;
1872 crtc_resp->y = crtc->y;
1873 if (crtc->enabled) {
1874 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1875 crtc_resp->mode_valid = 1;
1878 crtc_resp->mode_valid = 0;
1881 drm_modeset_unlock_crtc(crtc);
1886 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1887 const struct drm_file *file_priv)
1890 * If user-space hasn't configured the driver to expose the stereo 3D
1891 * modes, don't expose them.
1893 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1899 static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
1901 /* For atomic drivers only state objects are synchronously updated and
1902 * protected by modeset locks, so check those first. */
1903 if (connector->state)
1904 return connector->state->best_encoder;
1905 return connector->encoder;
1908 /* helper for getconnector and getproperties ioctls */
1909 static int get_properties(struct drm_mode_object *obj, bool atomic,
1910 uint32_t __user *prop_ptr, uint64_t __user *prop_values,
1911 uint32_t *arg_count_props)
1916 props_count = obj->properties->count;
1918 props_count -= obj->properties->atomic_count;
1920 if ((*arg_count_props >= props_count) && props_count) {
1921 for (i = 0, copied = 0; copied < props_count; i++) {
1922 struct drm_property *prop = obj->properties->properties[i];
1925 if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
1928 ret = drm_object_property_get_value(obj, prop, &val);
1932 if (put_user(prop->base.id, prop_ptr + copied))
1935 if (put_user(val, prop_values + copied))
1941 *arg_count_props = props_count;
1947 * drm_mode_getconnector - get connector configuration
1948 * @dev: drm device for the ioctl
1949 * @data: data pointer for the ioctl
1950 * @file_priv: drm file for the ioctl call
1952 * Construct a connector configuration structure to return to the user.
1954 * Called by the user via ioctl.
1957 * Zero on success, negative errno on failure.
1959 int drm_mode_getconnector(struct drm_device *dev, void *data,
1960 struct drm_file *file_priv)
1962 struct drm_mode_get_connector *out_resp = data;
1963 struct drm_connector *connector;
1964 struct drm_encoder *encoder;
1965 struct drm_display_mode *mode;
1967 int encoders_count = 0;
1971 struct drm_mode_modeinfo u_mode;
1972 struct drm_mode_modeinfo __user *mode_ptr;
1973 uint32_t __user *encoder_ptr;
1975 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1978 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1980 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1982 mutex_lock(&dev->mode_config.mutex);
1984 connector = drm_connector_find(dev, out_resp->connector_id);
1990 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
1991 if (connector->encoder_ids[i] != 0)
1994 if (out_resp->count_modes == 0) {
1995 connector->funcs->fill_modes(connector,
1996 dev->mode_config.max_width,
1997 dev->mode_config.max_height);
2000 /* delayed so we get modes regardless of pre-fill_modes state */
2001 list_for_each_entry(mode, &connector->modes, head)
2002 if (drm_mode_expose_to_userspace(mode, file_priv))
2005 out_resp->connector_id = connector->base.id;
2006 out_resp->connector_type = connector->connector_type;
2007 out_resp->connector_type_id = connector->connector_type_id;
2008 out_resp->mm_width = connector->display_info.width_mm;
2009 out_resp->mm_height = connector->display_info.height_mm;
2010 out_resp->subpixel = connector->display_info.subpixel_order;
2011 out_resp->connection = connector->status;
2013 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2014 encoder = drm_connector_get_encoder(connector);
2016 out_resp->encoder_id = encoder->base.id;
2018 out_resp->encoder_id = 0;
2021 * This ioctl is called twice, once to determine how much space is
2022 * needed, and the 2nd time to fill it.
2024 if ((out_resp->count_modes >= mode_count) && mode_count) {
2026 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
2027 list_for_each_entry(mode, &connector->modes, head) {
2028 if (!drm_mode_expose_to_userspace(mode, file_priv))
2031 drm_mode_convert_to_umode(&u_mode, mode);
2032 if (copy_to_user(mode_ptr + copied,
2033 &u_mode, sizeof(u_mode))) {
2040 out_resp->count_modes = mode_count;
2042 ret = get_properties(&connector->base, file_priv->atomic,
2043 (uint32_t __user *)(unsigned long)(out_resp->props_ptr),
2044 (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr),
2045 &out_resp->count_props);
2049 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2051 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
2052 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2053 if (connector->encoder_ids[i] != 0) {
2054 if (put_user(connector->encoder_ids[i],
2055 encoder_ptr + copied)) {
2063 out_resp->count_encoders = encoders_count;
2066 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2069 mutex_unlock(&dev->mode_config.mutex);
2074 static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2076 struct drm_connector *connector;
2077 struct drm_device *dev = encoder->dev;
2078 bool uses_atomic = false;
2080 /* For atomic drivers only state objects are synchronously updated and
2081 * protected by modeset locks, so check those first. */
2082 drm_for_each_connector(connector, dev) {
2083 if (!connector->state)
2088 if (connector->state->best_encoder != encoder)
2091 return connector->state->crtc;
2094 /* Don't return stale data (e.g. pending async disable). */
2098 return encoder->crtc;
2102 * drm_mode_getencoder - get encoder configuration
2103 * @dev: drm device for the ioctl
2104 * @data: data pointer for the ioctl
2105 * @file_priv: drm file for the ioctl call
2107 * Construct a encoder configuration structure to return to the user.
2109 * Called by the user via ioctl.
2112 * Zero on success, negative errno on failure.
2114 int drm_mode_getencoder(struct drm_device *dev, void *data,
2115 struct drm_file *file_priv)
2117 struct drm_mode_get_encoder *enc_resp = data;
2118 struct drm_encoder *encoder;
2119 struct drm_crtc *crtc;
2121 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2124 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
2128 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2129 crtc = drm_encoder_get_crtc(encoder);
2131 enc_resp->crtc_id = crtc->base.id;
2133 enc_resp->crtc_id = 0;
2134 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2136 enc_resp->encoder_type = encoder->encoder_type;
2137 enc_resp->encoder_id = encoder->base.id;
2138 enc_resp->possible_crtcs = encoder->possible_crtcs;
2139 enc_resp->possible_clones = encoder->possible_clones;
2145 * drm_mode_getplane_res - enumerate all plane resources
2148 * @file_priv: DRM file info
2150 * Construct a list of plane ids to return to the user.
2152 * Called by the user via ioctl.
2155 * Zero on success, negative errno on failure.
2157 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2158 struct drm_file *file_priv)
2160 struct drm_mode_get_plane_res *plane_resp = data;
2161 struct drm_mode_config *config;
2162 struct drm_plane *plane;
2163 uint32_t __user *plane_ptr;
2165 unsigned num_planes;
2167 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2170 config = &dev->mode_config;
2172 if (file_priv->universal_planes)
2173 num_planes = config->num_total_plane;
2175 num_planes = config->num_overlay_plane;
2178 * This ioctl is called twice, once to determine how much space is
2179 * needed, and the 2nd time to fill it.
2182 (plane_resp->count_planes >= num_planes)) {
2183 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2185 /* Plane lists are invariant, no locking needed. */
2186 drm_for_each_plane(plane, dev) {
2188 * Unless userspace set the 'universal planes'
2189 * capability bit, only advertise overlays.
2191 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2192 !file_priv->universal_planes)
2195 if (put_user(plane->base.id, plane_ptr + copied))
2200 plane_resp->count_planes = num_planes;
2206 * drm_mode_getplane - get plane configuration
2209 * @file_priv: DRM file info
2211 * Construct a plane configuration structure to return to the user.
2213 * Called by the user via ioctl.
2216 * Zero on success, negative errno on failure.
2218 int drm_mode_getplane(struct drm_device *dev, void *data,
2219 struct drm_file *file_priv)
2221 struct drm_mode_get_plane *plane_resp = data;
2222 struct drm_plane *plane;
2223 uint32_t __user *format_ptr;
2225 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2228 plane = drm_plane_find(dev, plane_resp->plane_id);
2232 drm_modeset_lock(&plane->mutex, NULL);
2234 plane_resp->crtc_id = plane->crtc->base.id;
2236 plane_resp->crtc_id = 0;
2239 plane_resp->fb_id = plane->fb->base.id;
2241 plane_resp->fb_id = 0;
2242 drm_modeset_unlock(&plane->mutex);
2244 plane_resp->plane_id = plane->base.id;
2245 plane_resp->possible_crtcs = plane->possible_crtcs;
2246 plane_resp->gamma_size = 0;
2249 * This ioctl is called twice, once to determine how much space is
2250 * needed, and the 2nd time to fill it.
2252 if (plane->format_count &&
2253 (plane_resp->count_format_types >= plane->format_count)) {
2254 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2255 if (copy_to_user(format_ptr,
2256 plane->format_types,
2257 sizeof(uint32_t) * plane->format_count)) {
2261 plane_resp->count_format_types = plane->format_count;
2267 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2268 * @plane: plane to check for format support
2269 * @format: the pixel format
2272 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2275 int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format)
2279 for (i = 0; i < plane->format_count; i++) {
2280 if (format == plane->format_types[i])
2287 static int check_src_coords(uint32_t src_x, uint32_t src_y,
2288 uint32_t src_w, uint32_t src_h,
2289 const struct drm_framebuffer *fb)
2291 unsigned int fb_width, fb_height;
2293 fb_width = fb->width << 16;
2294 fb_height = fb->height << 16;
2296 /* Make sure source coordinates are inside the fb. */
2297 if (src_w > fb_width ||
2298 src_x > fb_width - src_w ||
2299 src_h > fb_height ||
2300 src_y > fb_height - src_h) {
2301 DRM_DEBUG_KMS("Invalid source coordinates "
2302 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2303 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2304 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2305 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2306 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2314 * setplane_internal - setplane handler for internal callers
2316 * Note that we assume an extra reference has already been taken on fb. If the
2317 * update fails, this reference will be dropped before return; if it succeeds,
2318 * the previous framebuffer (if any) will be unreferenced instead.
2320 * src_{x,y,w,h} are provided in 16.16 fixed point format
2322 static int __setplane_internal(struct drm_plane *plane,
2323 struct drm_crtc *crtc,
2324 struct drm_framebuffer *fb,
2325 int32_t crtc_x, int32_t crtc_y,
2326 uint32_t crtc_w, uint32_t crtc_h,
2327 /* src_{x,y,w,h} values are 16.16 fixed point */
2328 uint32_t src_x, uint32_t src_y,
2329 uint32_t src_w, uint32_t src_h)
2333 /* No fb means shut it down */
2335 plane->old_fb = plane->fb;
2336 ret = plane->funcs->disable_plane(plane);
2341 plane->old_fb = NULL;
2346 /* Check whether this plane is usable on this CRTC */
2347 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2348 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2353 /* Check whether this plane supports the fb pixel format. */
2354 ret = drm_plane_check_pixel_format(plane, fb->pixel_format);
2356 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2357 drm_get_format_name(fb->pixel_format));
2361 /* Give drivers some help against integer overflows */
2362 if (crtc_w > INT_MAX ||
2363 crtc_x > INT_MAX - (int32_t) crtc_w ||
2365 crtc_y > INT_MAX - (int32_t) crtc_h) {
2366 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2367 crtc_w, crtc_h, crtc_x, crtc_y);
2372 ret = check_src_coords(src_x, src_y, src_w, src_h, fb);
2376 plane->old_fb = plane->fb;
2377 ret = plane->funcs->update_plane(plane, crtc, fb,
2378 crtc_x, crtc_y, crtc_w, crtc_h,
2379 src_x, src_y, src_w, src_h);
2385 plane->old_fb = NULL;
2390 drm_framebuffer_unreference(fb);
2392 drm_framebuffer_unreference(plane->old_fb);
2393 plane->old_fb = NULL;
2398 static int setplane_internal(struct drm_plane *plane,
2399 struct drm_crtc *crtc,
2400 struct drm_framebuffer *fb,
2401 int32_t crtc_x, int32_t crtc_y,
2402 uint32_t crtc_w, uint32_t crtc_h,
2403 /* src_{x,y,w,h} values are 16.16 fixed point */
2404 uint32_t src_x, uint32_t src_y,
2405 uint32_t src_w, uint32_t src_h)
2409 drm_modeset_lock_all(plane->dev);
2410 ret = __setplane_internal(plane, crtc, fb,
2411 crtc_x, crtc_y, crtc_w, crtc_h,
2412 src_x, src_y, src_w, src_h);
2413 drm_modeset_unlock_all(plane->dev);
2419 * drm_mode_setplane - configure a plane's configuration
2421 * @data: ioctl data*
2422 * @file_priv: DRM file info
2424 * Set plane configuration, including placement, fb, scaling, and other factors.
2425 * Or pass a NULL fb to disable (planes may be disabled without providing a
2429 * Zero on success, negative errno on failure.
2431 int drm_mode_setplane(struct drm_device *dev, void *data,
2432 struct drm_file *file_priv)
2434 struct drm_mode_set_plane *plane_req = data;
2435 struct drm_plane *plane;
2436 struct drm_crtc *crtc = NULL;
2437 struct drm_framebuffer *fb = NULL;
2439 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2443 * First, find the plane, crtc, and fb objects. If not available,
2444 * we don't bother to call the driver.
2446 plane = drm_plane_find(dev, plane_req->plane_id);
2448 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2449 plane_req->plane_id);
2453 if (plane_req->fb_id) {
2454 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2456 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2461 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2463 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2464 plane_req->crtc_id);
2470 * setplane_internal will take care of deref'ing either the old or new
2471 * framebuffer depending on success.
2473 return setplane_internal(plane, crtc, fb,
2474 plane_req->crtc_x, plane_req->crtc_y,
2475 plane_req->crtc_w, plane_req->crtc_h,
2476 plane_req->src_x, plane_req->src_y,
2477 plane_req->src_w, plane_req->src_h);
2481 * drm_mode_set_config_internal - helper to call ->set_config
2482 * @set: modeset config to set
2484 * This is a little helper to wrap internal calls to the ->set_config driver
2485 * interface. The only thing it adds is correct refcounting dance.
2488 * Zero on success, negative errno on failure.
2490 int drm_mode_set_config_internal(struct drm_mode_set *set)
2492 struct drm_crtc *crtc = set->crtc;
2493 struct drm_framebuffer *fb;
2494 struct drm_crtc *tmp;
2498 * NOTE: ->set_config can also disable other crtcs (if we steal all
2499 * connectors from it), hence we need to refcount the fbs across all
2500 * crtcs. Atomic modeset will have saner semantics ...
2502 drm_for_each_crtc(tmp, crtc->dev)
2503 tmp->primary->old_fb = tmp->primary->fb;
2507 ret = crtc->funcs->set_config(set);
2509 crtc->primary->crtc = crtc;
2510 crtc->primary->fb = fb;
2513 drm_for_each_crtc(tmp, crtc->dev) {
2514 if (tmp->primary->fb)
2515 drm_framebuffer_reference(tmp->primary->fb);
2516 if (tmp->primary->old_fb)
2517 drm_framebuffer_unreference(tmp->primary->old_fb);
2518 tmp->primary->old_fb = NULL;
2523 EXPORT_SYMBOL(drm_mode_set_config_internal);
2526 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2527 * @mode: mode to query
2528 * @hdisplay: hdisplay value to fill in
2529 * @vdisplay: vdisplay value to fill in
2531 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2532 * the appropriate layout.
2534 void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
2535 int *hdisplay, int *vdisplay)
2537 struct drm_display_mode adjusted;
2539 drm_mode_copy(&adjusted, mode);
2540 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
2541 *hdisplay = adjusted.crtc_hdisplay;
2542 *vdisplay = adjusted.crtc_vdisplay;
2544 EXPORT_SYMBOL(drm_crtc_get_hv_timing);
2547 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2549 * @crtc: CRTC that framebuffer will be displayed on
2552 * @mode: mode that framebuffer will be displayed under
2553 * @fb: framebuffer to check size of
2555 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2557 const struct drm_display_mode *mode,
2558 const struct drm_framebuffer *fb)
2561 int hdisplay, vdisplay;
2563 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
2566 crtc->primary->state->rotation & (BIT(DRM_ROTATE_90) |
2567 BIT(DRM_ROTATE_270)))
2568 swap(hdisplay, vdisplay);
2570 return check_src_coords(x << 16, y << 16,
2571 hdisplay << 16, vdisplay << 16, fb);
2573 EXPORT_SYMBOL(drm_crtc_check_viewport);
2576 * drm_mode_setcrtc - set CRTC configuration
2577 * @dev: drm device for the ioctl
2578 * @data: data pointer for the ioctl
2579 * @file_priv: drm file for the ioctl call
2581 * Build a new CRTC configuration based on user request.
2583 * Called by the user via ioctl.
2586 * Zero on success, negative errno on failure.
2588 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2589 struct drm_file *file_priv)
2591 struct drm_mode_config *config = &dev->mode_config;
2592 struct drm_mode_crtc *crtc_req = data;
2593 struct drm_crtc *crtc;
2594 struct drm_connector **connector_set = NULL, *connector;
2595 struct drm_framebuffer *fb = NULL;
2596 struct drm_display_mode *mode = NULL;
2597 struct drm_mode_set set;
2598 uint32_t __user *set_connectors_ptr;
2602 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2606 * Universal plane src offsets are only 16.16, prevent havoc for
2607 * drivers using universal plane code internally.
2609 if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000)
2612 drm_modeset_lock_all(dev);
2613 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2615 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2619 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2621 if (crtc_req->mode_valid) {
2622 /* If we have a mode we need a framebuffer. */
2623 /* If we pass -1, set the mode with the currently bound fb */
2624 if (crtc_req->fb_id == -1) {
2625 if (!crtc->primary->fb) {
2626 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2630 fb = crtc->primary->fb;
2631 /* Make refcounting symmetric with the lookup path. */
2632 drm_framebuffer_reference(fb);
2634 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2636 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2643 mode = drm_mode_create(dev);
2649 ret = drm_mode_convert_umode(mode, &crtc_req->mode);
2651 DRM_DEBUG_KMS("Invalid mode\n");
2655 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2658 * Check whether the primary plane supports the fb pixel format.
2659 * Drivers not implementing the universal planes API use a
2660 * default formats list provided by the DRM core which doesn't
2661 * match real hardware capabilities. Skip the check in that
2664 if (!crtc->primary->format_default) {
2665 ret = drm_plane_check_pixel_format(crtc->primary,
2668 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2669 drm_get_format_name(fb->pixel_format));
2674 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2681 if (crtc_req->count_connectors == 0 && mode) {
2682 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2687 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2688 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2689 crtc_req->count_connectors);
2694 if (crtc_req->count_connectors > 0) {
2697 /* Avoid unbounded kernel memory allocation */
2698 if (crtc_req->count_connectors > config->num_connector) {
2703 connector_set = kmalloc_array(crtc_req->count_connectors,
2704 sizeof(struct drm_connector *),
2706 if (!connector_set) {
2711 for (i = 0; i < crtc_req->count_connectors; i++) {
2712 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2713 if (get_user(out_id, &set_connectors_ptr[i])) {
2718 connector = drm_connector_find(dev, out_id);
2720 DRM_DEBUG_KMS("Connector id %d unknown\n",
2725 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2729 connector_set[i] = connector;
2734 set.x = crtc_req->x;
2735 set.y = crtc_req->y;
2737 set.connectors = connector_set;
2738 set.num_connectors = crtc_req->count_connectors;
2740 ret = drm_mode_set_config_internal(&set);
2744 drm_framebuffer_unreference(fb);
2746 kfree(connector_set);
2747 drm_mode_destroy(dev, mode);
2748 drm_modeset_unlock_all(dev);
2753 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2754 * universal plane handler call
2755 * @crtc: crtc to update cursor for
2756 * @req: data pointer for the ioctl
2757 * @file_priv: drm file for the ioctl call
2759 * Legacy cursor ioctl's work directly with driver buffer handles. To
2760 * translate legacy ioctl calls into universal plane handler calls, we need to
2761 * wrap the native buffer handle in a drm_framebuffer.
2763 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2764 * buffer with a pitch of 4*width; the universal plane interface should be used
2765 * directly in cases where the hardware can support other buffer settings and
2766 * userspace wants to make use of these capabilities.
2769 * Zero on success, negative errno on failure.
2771 static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2772 struct drm_mode_cursor2 *req,
2773 struct drm_file *file_priv)
2775 struct drm_device *dev = crtc->dev;
2776 struct drm_framebuffer *fb = NULL;
2777 struct drm_mode_fb_cmd2 fbreq = {
2778 .width = req->width,
2779 .height = req->height,
2780 .pixel_format = DRM_FORMAT_ARGB8888,
2781 .pitches = { req->width * 4 },
2782 .handles = { req->handle },
2784 int32_t crtc_x, crtc_y;
2785 uint32_t crtc_w = 0, crtc_h = 0;
2786 uint32_t src_w = 0, src_h = 0;
2789 BUG_ON(!crtc->cursor);
2790 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
2793 * Obtain fb we'll be using (either new or existing) and take an extra
2794 * reference to it if fb != null. setplane will take care of dropping
2795 * the reference if the plane update fails.
2797 if (req->flags & DRM_MODE_CURSOR_BO) {
2799 fb = internal_framebuffer_create(dev, &fbreq, file_priv);
2801 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2808 fb = crtc->cursor->fb;
2810 drm_framebuffer_reference(fb);
2813 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2817 crtc_x = crtc->cursor_x;
2818 crtc_y = crtc->cursor_y;
2823 crtc_h = fb->height;
2824 src_w = fb->width << 16;
2825 src_h = fb->height << 16;
2829 * setplane_internal will take care of deref'ing either the old or new
2830 * framebuffer depending on success.
2832 ret = __setplane_internal(crtc->cursor, crtc, fb,
2833 crtc_x, crtc_y, crtc_w, crtc_h,
2834 0, 0, src_w, src_h);
2836 /* Update successful; save new cursor position, if necessary */
2837 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2838 crtc->cursor_x = req->x;
2839 crtc->cursor_y = req->y;
2845 static int drm_mode_cursor_common(struct drm_device *dev,
2846 struct drm_mode_cursor2 *req,
2847 struct drm_file *file_priv)
2849 struct drm_crtc *crtc;
2852 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2855 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2858 crtc = drm_crtc_find(dev, req->crtc_id);
2860 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2865 * If this crtc has a universal cursor plane, call that plane's update
2866 * handler rather than using legacy cursor handlers.
2868 drm_modeset_lock_crtc(crtc, crtc->cursor);
2870 ret = drm_mode_cursor_universal(crtc, req, file_priv);
2874 if (req->flags & DRM_MODE_CURSOR_BO) {
2875 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
2879 /* Turns off the cursor if handle is 0 */
2880 if (crtc->funcs->cursor_set2)
2881 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2882 req->width, req->height, req->hot_x, req->hot_y);
2884 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2885 req->width, req->height);
2888 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2889 if (crtc->funcs->cursor_move) {
2890 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2897 drm_modeset_unlock_crtc(crtc);
2905 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2906 * @dev: drm device for the ioctl
2907 * @data: data pointer for the ioctl
2908 * @file_priv: drm file for the ioctl call
2910 * Set the cursor configuration based on user request.
2912 * Called by the user via ioctl.
2915 * Zero on success, negative errno on failure.
2917 int drm_mode_cursor_ioctl(struct drm_device *dev,
2918 void *data, struct drm_file *file_priv)
2920 struct drm_mode_cursor *req = data;
2921 struct drm_mode_cursor2 new_req;
2923 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2924 new_req.hot_x = new_req.hot_y = 0;
2926 return drm_mode_cursor_common(dev, &new_req, file_priv);
2930 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2931 * @dev: drm device for the ioctl
2932 * @data: data pointer for the ioctl
2933 * @file_priv: drm file for the ioctl call
2935 * Set the cursor configuration based on user request. This implements the 2nd
2936 * version of the cursor ioctl, which allows userspace to additionally specify
2937 * the hotspot of the pointer.
2939 * Called by the user via ioctl.
2942 * Zero on success, negative errno on failure.
2944 int drm_mode_cursor2_ioctl(struct drm_device *dev,
2945 void *data, struct drm_file *file_priv)
2947 struct drm_mode_cursor2 *req = data;
2949 return drm_mode_cursor_common(dev, req, file_priv);
2953 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2954 * @bpp: bits per pixels
2955 * @depth: bit depth per pixel
2957 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2958 * Useful in fbdev emulation code, since that deals in those values.
2960 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2966 fmt = DRM_FORMAT_C8;
2970 fmt = DRM_FORMAT_XRGB1555;
2972 fmt = DRM_FORMAT_RGB565;
2975 fmt = DRM_FORMAT_RGB888;
2979 fmt = DRM_FORMAT_XRGB8888;
2980 else if (depth == 30)
2981 fmt = DRM_FORMAT_XRGB2101010;
2983 fmt = DRM_FORMAT_ARGB8888;
2986 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2987 fmt = DRM_FORMAT_XRGB8888;
2993 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
2996 * drm_mode_addfb - add an FB to the graphics configuration
2997 * @dev: drm device for the ioctl
2998 * @data: data pointer for the ioctl
2999 * @file_priv: drm file for the ioctl call
3001 * Add a new FB to the specified CRTC, given a user request. This is the
3002 * original addfb ioctl which only supported RGB formats.
3004 * Called by the user via ioctl.
3007 * Zero on success, negative errno on failure.
3009 int drm_mode_addfb(struct drm_device *dev,
3010 void *data, struct drm_file *file_priv)
3012 struct drm_mode_fb_cmd *or = data;
3013 struct drm_mode_fb_cmd2 r = {};
3016 /* convert to new format and call new ioctl */
3017 r.fb_id = or->fb_id;
3018 r.width = or->width;
3019 r.height = or->height;
3020 r.pitches[0] = or->pitch;
3021 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3022 r.handles[0] = or->handle;
3024 ret = drm_mode_addfb2(dev, &r, file_priv);
3028 or->fb_id = r.fb_id;
3033 static int format_check(const struct drm_mode_fb_cmd2 *r)
3035 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3039 case DRM_FORMAT_RGB332:
3040 case DRM_FORMAT_BGR233:
3041 case DRM_FORMAT_XRGB4444:
3042 case DRM_FORMAT_XBGR4444:
3043 case DRM_FORMAT_RGBX4444:
3044 case DRM_FORMAT_BGRX4444:
3045 case DRM_FORMAT_ARGB4444:
3046 case DRM_FORMAT_ABGR4444:
3047 case DRM_FORMAT_RGBA4444:
3048 case DRM_FORMAT_BGRA4444:
3049 case DRM_FORMAT_XRGB1555:
3050 case DRM_FORMAT_XBGR1555:
3051 case DRM_FORMAT_RGBX5551:
3052 case DRM_FORMAT_BGRX5551:
3053 case DRM_FORMAT_ARGB1555:
3054 case DRM_FORMAT_ABGR1555:
3055 case DRM_FORMAT_RGBA5551:
3056 case DRM_FORMAT_BGRA5551:
3057 case DRM_FORMAT_RGB565:
3058 case DRM_FORMAT_BGR565:
3059 case DRM_FORMAT_RGB888:
3060 case DRM_FORMAT_BGR888:
3061 case DRM_FORMAT_XRGB8888:
3062 case DRM_FORMAT_XBGR8888:
3063 case DRM_FORMAT_RGBX8888:
3064 case DRM_FORMAT_BGRX8888:
3065 case DRM_FORMAT_ARGB8888:
3066 case DRM_FORMAT_ABGR8888:
3067 case DRM_FORMAT_RGBA8888:
3068 case DRM_FORMAT_BGRA8888:
3069 case DRM_FORMAT_XRGB2101010:
3070 case DRM_FORMAT_XBGR2101010:
3071 case DRM_FORMAT_RGBX1010102:
3072 case DRM_FORMAT_BGRX1010102:
3073 case DRM_FORMAT_ARGB2101010:
3074 case DRM_FORMAT_ABGR2101010:
3075 case DRM_FORMAT_RGBA1010102:
3076 case DRM_FORMAT_BGRA1010102:
3077 case DRM_FORMAT_YUYV:
3078 case DRM_FORMAT_YVYU:
3079 case DRM_FORMAT_UYVY:
3080 case DRM_FORMAT_VYUY:
3081 case DRM_FORMAT_AYUV:
3082 case DRM_FORMAT_NV12:
3083 case DRM_FORMAT_NV21:
3084 case DRM_FORMAT_NV16:
3085 case DRM_FORMAT_NV61:
3086 case DRM_FORMAT_NV24:
3087 case DRM_FORMAT_NV42:
3088 case DRM_FORMAT_YUV410:
3089 case DRM_FORMAT_YVU410:
3090 case DRM_FORMAT_YUV411:
3091 case DRM_FORMAT_YVU411:
3092 case DRM_FORMAT_YUV420:
3093 case DRM_FORMAT_YVU420:
3094 case DRM_FORMAT_YUV422:
3095 case DRM_FORMAT_YVU422:
3096 case DRM_FORMAT_YUV444:
3097 case DRM_FORMAT_YVU444:
3100 DRM_DEBUG_KMS("invalid pixel format %s\n",
3101 drm_get_format_name(r->pixel_format));
3106 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
3108 int ret, hsub, vsub, num_planes, i;
3110 ret = format_check(r);
3112 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3113 drm_get_format_name(r->pixel_format));
3117 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3118 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3119 num_planes = drm_format_num_planes(r->pixel_format);
3121 if (r->width == 0 || r->width % hsub) {
3122 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
3126 if (r->height == 0 || r->height % vsub) {
3127 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
3131 for (i = 0; i < num_planes; i++) {
3132 unsigned int width = r->width / (i != 0 ? hsub : 1);
3133 unsigned int height = r->height / (i != 0 ? vsub : 1);
3134 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
3136 if (!r->handles[i]) {
3137 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
3141 if ((uint64_t) width * cpp > UINT_MAX)
3144 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3147 if (r->pitches[i] < width * cpp) {
3148 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
3152 if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
3153 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3158 /* modifier specific checks: */
3159 switch (r->modifier[i]) {
3160 case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE:
3161 /* NOTE: the pitch restriction may be lifted later if it turns
3162 * out that no hw has this restriction:
3164 if (r->pixel_format != DRM_FORMAT_NV12 ||
3165 width % 128 || height % 32 ||
3166 r->pitches[i] % 128) {
3167 DRM_DEBUG_KMS("bad modifier data for plane %d\n", i);
3177 for (i = num_planes; i < 4; i++) {
3178 if (r->modifier[i]) {
3179 DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i);
3183 /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
3184 if (!(r->flags & DRM_MODE_FB_MODIFIERS))
3187 if (r->handles[i]) {
3188 DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i);
3192 if (r->pitches[i]) {
3193 DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i);
3197 if (r->offsets[i]) {
3198 DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i);
3206 static struct drm_framebuffer *
3207 internal_framebuffer_create(struct drm_device *dev,
3208 struct drm_mode_fb_cmd2 *r,
3209 struct drm_file *file_priv)
3211 struct drm_mode_config *config = &dev->mode_config;
3212 struct drm_framebuffer *fb;
3215 if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
3216 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
3217 return ERR_PTR(-EINVAL);
3220 if ((config->min_width > r->width) || (r->width > config->max_width)) {
3221 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3222 r->width, config->min_width, config->max_width);
3223 return ERR_PTR(-EINVAL);
3225 if ((config->min_height > r->height) || (r->height > config->max_height)) {
3226 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3227 r->height, config->min_height, config->max_height);
3228 return ERR_PTR(-EINVAL);
3231 if (r->flags & DRM_MODE_FB_MODIFIERS &&
3232 !dev->mode_config.allow_fb_modifiers) {
3233 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3234 return ERR_PTR(-EINVAL);
3237 ret = framebuffer_check(r);
3239 return ERR_PTR(ret);
3241 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
3243 DRM_DEBUG_KMS("could not create framebuffer\n");
3251 * drm_mode_addfb2 - add an FB to the graphics configuration
3252 * @dev: drm device for the ioctl
3253 * @data: data pointer for the ioctl
3254 * @file_priv: drm file for the ioctl call
3256 * Add a new FB to the specified CRTC, given a user request with format. This is
3257 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3258 * and uses fourcc codes as pixel format specifiers.
3260 * Called by the user via ioctl.
3263 * Zero on success, negative errno on failure.
3265 int drm_mode_addfb2(struct drm_device *dev,
3266 void *data, struct drm_file *file_priv)
3268 struct drm_mode_fb_cmd2 *r = data;
3269 struct drm_framebuffer *fb;
3271 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3274 fb = internal_framebuffer_create(dev, r, file_priv);
3278 /* Transfer ownership to the filp for reaping on close */
3280 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3281 mutex_lock(&file_priv->fbs_lock);
3282 r->fb_id = fb->base.id;
3283 list_add(&fb->filp_head, &file_priv->fbs);
3284 mutex_unlock(&file_priv->fbs_lock);
3290 * drm_mode_rmfb - remove an FB from the configuration
3291 * @dev: drm device for the ioctl
3292 * @data: data pointer for the ioctl
3293 * @file_priv: drm file for the ioctl call
3295 * Remove the FB specified by the user.
3297 * Called by the user via ioctl.
3300 * Zero on success, negative errno on failure.
3302 int drm_mode_rmfb(struct drm_device *dev,
3303 void *data, struct drm_file *file_priv)
3305 struct drm_framebuffer *fb = NULL;
3306 struct drm_framebuffer *fbl = NULL;
3307 uint32_t *id = data;
3310 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3313 mutex_lock(&file_priv->fbs_lock);
3314 mutex_lock(&dev->mode_config.fb_lock);
3315 fb = __drm_framebuffer_lookup(dev, *id);
3319 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3325 list_del_init(&fb->filp_head);
3326 mutex_unlock(&dev->mode_config.fb_lock);
3327 mutex_unlock(&file_priv->fbs_lock);
3329 drm_framebuffer_unreference(fb);
3334 mutex_unlock(&dev->mode_config.fb_lock);
3335 mutex_unlock(&file_priv->fbs_lock);
3341 * drm_mode_getfb - get FB info
3342 * @dev: drm device for the ioctl
3343 * @data: data pointer for the ioctl
3344 * @file_priv: drm file for the ioctl call
3346 * Lookup the FB given its ID and return info about it.
3348 * Called by the user via ioctl.
3351 * Zero on success, negative errno on failure.
3353 int drm_mode_getfb(struct drm_device *dev,
3354 void *data, struct drm_file *file_priv)
3356 struct drm_mode_fb_cmd *r = data;
3357 struct drm_framebuffer *fb;
3360 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3363 fb = drm_framebuffer_lookup(dev, r->fb_id);
3367 r->height = fb->height;
3368 r->width = fb->width;
3369 r->depth = fb->depth;
3370 r->bpp = fb->bits_per_pixel;
3371 r->pitch = fb->pitches[0];
3372 if (fb->funcs->create_handle) {
3373 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
3374 drm_is_control_client(file_priv)) {
3375 ret = fb->funcs->create_handle(fb, file_priv,
3378 /* GET_FB() is an unprivileged ioctl so we must not
3379 * return a buffer-handle to non-master processes! For
3380 * backwards-compatibility reasons, we cannot make
3381 * GET_FB() privileged, so just return an invalid handle
3382 * for non-masters. */
3390 drm_framebuffer_unreference(fb);
3396 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3397 * @dev: drm device for the ioctl
3398 * @data: data pointer for the ioctl
3399 * @file_priv: drm file for the ioctl call
3401 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3402 * rectangle list. Generic userspace which does frontbuffer rendering must call
3403 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3404 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3406 * Modesetting drivers which always update the frontbuffer do not need to
3407 * implement the corresponding ->dirty framebuffer callback.
3409 * Called by the user via ioctl.
3412 * Zero on success, negative errno on failure.
3414 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3415 void *data, struct drm_file *file_priv)
3417 struct drm_clip_rect __user *clips_ptr;
3418 struct drm_clip_rect *clips = NULL;
3419 struct drm_mode_fb_dirty_cmd *r = data;
3420 struct drm_framebuffer *fb;
3425 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3428 fb = drm_framebuffer_lookup(dev, r->fb_id);
3432 num_clips = r->num_clips;
3433 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3435 if (!num_clips != !clips_ptr) {
3440 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3442 /* If userspace annotates copy, clips must come in pairs */
3443 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3448 if (num_clips && clips_ptr) {
3449 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3453 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
3459 ret = copy_from_user(clips, clips_ptr,
3460 num_clips * sizeof(*clips));
3467 if (fb->funcs->dirty) {
3468 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3477 drm_framebuffer_unreference(fb);
3484 * drm_fb_release - remove and free the FBs on this file
3485 * @priv: drm file for the ioctl
3487 * Destroy all the FBs associated with @filp.
3489 * Called by the user via ioctl.
3492 * Zero on success, negative errno on failure.
3494 void drm_fb_release(struct drm_file *priv)
3496 struct drm_framebuffer *fb, *tfb;
3499 * When the file gets released that means no one else can access the fb
3500 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3501 * avoid upsetting lockdep since the universal cursor code adds a
3502 * framebuffer while holding mutex locks.
3504 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3505 * locks is impossible here since no one else but this function can get
3508 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3509 list_del_init(&fb->filp_head);
3511 /* This drops the fpriv->fbs reference. */
3512 drm_framebuffer_unreference(fb);
3517 * drm_property_create - create a new property type
3519 * @flags: flags specifying the property type
3520 * @name: name of the property
3521 * @num_values: number of pre-defined values
3523 * This creates a new generic drm property which can then be attached to a drm
3524 * object with drm_object_attach_property. The returned property object must be
3525 * freed with drm_property_destroy.
3527 * Note that the DRM core keeps a per-device list of properties and that, if
3528 * drm_mode_config_cleanup() is called, it will destroy all properties created
3532 * A pointer to the newly created property on success, NULL on failure.
3534 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3535 const char *name, int num_values)
3537 struct drm_property *property = NULL;
3540 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3544 property->dev = dev;
3547 property->values = kcalloc(num_values, sizeof(uint64_t),
3549 if (!property->values)
3553 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3557 property->flags = flags;
3558 property->num_values = num_values;
3559 INIT_LIST_HEAD(&property->enum_list);
3562 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3563 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3566 list_add_tail(&property->head, &dev->mode_config.property_list);
3568 WARN_ON(!drm_property_type_valid(property));
3572 kfree(property->values);
3576 EXPORT_SYMBOL(drm_property_create);
3579 * drm_property_create_enum - create a new enumeration property type
3581 * @flags: flags specifying the property type
3582 * @name: name of the property
3583 * @props: enumeration lists with property values
3584 * @num_values: number of pre-defined values
3586 * This creates a new generic drm property which can then be attached to a drm
3587 * object with drm_object_attach_property. The returned property object must be
3588 * freed with drm_property_destroy.
3590 * Userspace is only allowed to set one of the predefined values for enumeration
3594 * A pointer to the newly created property on success, NULL on failure.
3596 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3598 const struct drm_prop_enum_list *props,
3601 struct drm_property *property;
3604 flags |= DRM_MODE_PROP_ENUM;
3606 property = drm_property_create(dev, flags, name, num_values);
3610 for (i = 0; i < num_values; i++) {
3611 ret = drm_property_add_enum(property, i,
3615 drm_property_destroy(dev, property);
3622 EXPORT_SYMBOL(drm_property_create_enum);
3625 * drm_property_create_bitmask - create a new bitmask property type
3627 * @flags: flags specifying the property type
3628 * @name: name of the property
3629 * @props: enumeration lists with property bitflags
3630 * @num_props: size of the @props array
3631 * @supported_bits: bitmask of all supported enumeration values
3633 * This creates a new bitmask drm property which can then be attached to a drm
3634 * object with drm_object_attach_property. The returned property object must be
3635 * freed with drm_property_destroy.
3637 * Compared to plain enumeration properties userspace is allowed to set any
3638 * or'ed together combination of the predefined property bitflag values
3641 * A pointer to the newly created property on success, NULL on failure.
3643 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3644 int flags, const char *name,
3645 const struct drm_prop_enum_list *props,
3647 uint64_t supported_bits)
3649 struct drm_property *property;
3650 int i, ret, index = 0;
3651 int num_values = hweight64(supported_bits);
3653 flags |= DRM_MODE_PROP_BITMASK;
3655 property = drm_property_create(dev, flags, name, num_values);
3658 for (i = 0; i < num_props; i++) {
3659 if (!(supported_bits & (1ULL << props[i].type)))
3662 if (WARN_ON(index >= num_values)) {
3663 drm_property_destroy(dev, property);
3667 ret = drm_property_add_enum(property, index++,
3671 drm_property_destroy(dev, property);
3678 EXPORT_SYMBOL(drm_property_create_bitmask);
3680 static struct drm_property *property_create_range(struct drm_device *dev,
3681 int flags, const char *name,
3682 uint64_t min, uint64_t max)
3684 struct drm_property *property;
3686 property = drm_property_create(dev, flags, name, 2);
3690 property->values[0] = min;
3691 property->values[1] = max;
3697 * drm_property_create_range - create a new unsigned ranged property type
3699 * @flags: flags specifying the property type
3700 * @name: name of the property
3701 * @min: minimum value of the property
3702 * @max: maximum value of the property
3704 * This creates a new generic drm property which can then be attached to a drm
3705 * object with drm_object_attach_property. The returned property object must be
3706 * freed with drm_property_destroy.
3708 * Userspace is allowed to set any unsigned integer value in the (min, max)
3712 * A pointer to the newly created property on success, NULL on failure.
3714 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3716 uint64_t min, uint64_t max)
3718 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3721 EXPORT_SYMBOL(drm_property_create_range);
3724 * drm_property_create_signed_range - create a new signed ranged property type
3726 * @flags: flags specifying the property type
3727 * @name: name of the property
3728 * @min: minimum value of the property
3729 * @max: maximum value of the property
3731 * This creates a new generic drm property which can then be attached to a drm
3732 * object with drm_object_attach_property. The returned property object must be
3733 * freed with drm_property_destroy.
3735 * Userspace is allowed to set any signed integer value in the (min, max)
3739 * A pointer to the newly created property on success, NULL on failure.
3741 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3742 int flags, const char *name,
3743 int64_t min, int64_t max)
3745 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3746 name, I642U64(min), I642U64(max));
3748 EXPORT_SYMBOL(drm_property_create_signed_range);
3751 * drm_property_create_object - create a new object property type
3753 * @flags: flags specifying the property type
3754 * @name: name of the property
3755 * @type: object type from DRM_MODE_OBJECT_* defines
3757 * This creates a new generic drm property which can then be attached to a drm
3758 * object with drm_object_attach_property. The returned property object must be
3759 * freed with drm_property_destroy.
3761 * Userspace is only allowed to set this to any property value of the given
3762 * @type. Only useful for atomic properties, which is enforced.
3765 * A pointer to the newly created property on success, NULL on failure.
3767 struct drm_property *drm_property_create_object(struct drm_device *dev,
3768 int flags, const char *name, uint32_t type)
3770 struct drm_property *property;
3772 flags |= DRM_MODE_PROP_OBJECT;
3774 if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
3777 property = drm_property_create(dev, flags, name, 1);
3781 property->values[0] = type;
3785 EXPORT_SYMBOL(drm_property_create_object);
3788 * drm_property_create_bool - create a new boolean property type
3790 * @flags: flags specifying the property type
3791 * @name: name of the property
3793 * This creates a new generic drm property which can then be attached to a drm
3794 * object with drm_object_attach_property. The returned property object must be
3795 * freed with drm_property_destroy.
3797 * This is implemented as a ranged property with only {0, 1} as valid values.
3800 * A pointer to the newly created property on success, NULL on failure.
3802 struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
3805 return drm_property_create_range(dev, flags, name, 0, 1);
3807 EXPORT_SYMBOL(drm_property_create_bool);
3810 * drm_property_add_enum - add a possible value to an enumeration property
3811 * @property: enumeration property to change
3812 * @index: index of the new enumeration
3813 * @value: value of the new enumeration
3814 * @name: symbolic name of the new enumeration
3816 * This functions adds enumerations to a property.
3818 * It's use is deprecated, drivers should use one of the more specific helpers
3819 * to directly create the property with all enumerations already attached.
3822 * Zero on success, error code on failure.
3824 int drm_property_add_enum(struct drm_property *property, int index,
3825 uint64_t value, const char *name)
3827 struct drm_property_enum *prop_enum;
3829 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3830 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
3834 * Bitmask enum properties have the additional constraint of values
3837 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3841 if (!list_empty(&property->enum_list)) {
3842 list_for_each_entry(prop_enum, &property->enum_list, head) {
3843 if (prop_enum->value == value) {
3844 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3845 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3851 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3855 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3856 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3857 prop_enum->value = value;
3859 property->values[index] = value;
3860 list_add_tail(&prop_enum->head, &property->enum_list);
3863 EXPORT_SYMBOL(drm_property_add_enum);
3866 * drm_property_destroy - destroy a drm property
3868 * @property: property to destry
3870 * This function frees a property including any attached resources like
3871 * enumeration values.
3873 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3875 struct drm_property_enum *prop_enum, *pt;
3877 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
3878 list_del(&prop_enum->head);
3882 if (property->num_values)
3883 kfree(property->values);
3884 drm_mode_object_put(dev, &property->base);
3885 list_del(&property->head);
3888 EXPORT_SYMBOL(drm_property_destroy);
3891 * drm_object_attach_property - attach a property to a modeset object
3892 * @obj: drm modeset object
3893 * @property: property to attach
3894 * @init_val: initial value of the property
3896 * This attaches the given property to the modeset object with the given initial
3897 * value. Currently this function cannot fail since the properties are stored in
3898 * a statically sized array.
3900 void drm_object_attach_property(struct drm_mode_object *obj,
3901 struct drm_property *property,
3904 int count = obj->properties->count;
3906 if (count == DRM_OBJECT_MAX_PROPERTY) {
3907 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3908 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3909 "you see this message on the same object type.\n",
3914 obj->properties->properties[count] = property;
3915 obj->properties->values[count] = init_val;
3916 obj->properties->count++;
3917 if (property->flags & DRM_MODE_PROP_ATOMIC)
3918 obj->properties->atomic_count++;
3920 EXPORT_SYMBOL(drm_object_attach_property);
3923 * drm_object_property_set_value - set the value of a property
3924 * @obj: drm mode object to set property value for
3925 * @property: property to set
3926 * @val: value the property should be set to
3928 * This functions sets a given property on a given object. This function only
3929 * changes the software state of the property, it does not call into the
3930 * driver's ->set_property callback.
3933 * Zero on success, error code on failure.
3935 int drm_object_property_set_value(struct drm_mode_object *obj,
3936 struct drm_property *property, uint64_t val)
3940 for (i = 0; i < obj->properties->count; i++) {
3941 if (obj->properties->properties[i] == property) {
3942 obj->properties->values[i] = val;
3949 EXPORT_SYMBOL(drm_object_property_set_value);
3952 * drm_object_property_get_value - retrieve the value of a property
3953 * @obj: drm mode object to get property value from
3954 * @property: property to retrieve
3955 * @val: storage for the property value
3957 * This function retrieves the softare state of the given property for the given
3958 * property. Since there is no driver callback to retrieve the current property
3959 * value this might be out of sync with the hardware, depending upon the driver
3963 * Zero on success, error code on failure.
3965 int drm_object_property_get_value(struct drm_mode_object *obj,
3966 struct drm_property *property, uint64_t *val)
3970 /* read-only properties bypass atomic mechanism and still store
3971 * their value in obj->properties->values[].. mostly to avoid
3972 * having to deal w/ EDID and similar props in atomic paths:
3974 if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
3975 !(property->flags & DRM_MODE_PROP_IMMUTABLE))
3976 return drm_atomic_get_property(obj, property, val);
3978 for (i = 0; i < obj->properties->count; i++) {
3979 if (obj->properties->properties[i] == property) {
3980 *val = obj->properties->values[i];
3987 EXPORT_SYMBOL(drm_object_property_get_value);
3990 * drm_mode_getproperty_ioctl - get the property metadata
3993 * @file_priv: DRM file info
3995 * This function retrieves the metadata for a given property, like the different
3996 * possible values for an enum property or the limits for a range property.
3998 * Blob properties are special
4000 * Called by the user via ioctl.
4003 * Zero on success, negative errno on failure.
4005 int drm_mode_getproperty_ioctl(struct drm_device *dev,
4006 void *data, struct drm_file *file_priv)
4008 struct drm_mode_get_property *out_resp = data;
4009 struct drm_property *property;
4011 int value_count = 0;
4014 struct drm_property_enum *prop_enum;
4015 struct drm_mode_property_enum __user *enum_ptr;
4016 uint64_t __user *values_ptr;
4018 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4021 drm_modeset_lock_all(dev);
4022 property = drm_property_find(dev, out_resp->prop_id);
4028 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4029 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4030 list_for_each_entry(prop_enum, &property->enum_list, head)
4034 value_count = property->num_values;
4036 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
4037 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
4038 out_resp->flags = property->flags;
4040 if ((out_resp->count_values >= value_count) && value_count) {
4041 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
4042 for (i = 0; i < value_count; i++) {
4043 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
4049 out_resp->count_values = value_count;
4051 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4052 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4053 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
4055 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
4056 list_for_each_entry(prop_enum, &property->enum_list, head) {
4058 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
4063 if (copy_to_user(&enum_ptr[copied].name,
4064 &prop_enum->name, DRM_PROP_NAME_LEN)) {
4071 out_resp->count_enum_blobs = enum_count;
4075 * NOTE: The idea seems to have been to use this to read all the blob
4076 * property values. But nothing ever added them to the corresponding
4077 * list, userspace always used the special-purpose get_blob ioctl to
4078 * read the value for a blob property. It also doesn't make a lot of
4079 * sense to return values here when everything else is just metadata for
4080 * the property itself.
4082 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4083 out_resp->count_enum_blobs = 0;
4085 drm_modeset_unlock_all(dev);
4090 * drm_property_create_blob - Create new blob property
4092 * Creates a new blob property for a specified DRM device, optionally
4095 * @dev: DRM device to create property for
4096 * @length: Length to allocate for blob data
4097 * @data: If specified, copies data into blob
4100 * New blob property with a single reference on success, or an ERR_PTR
4103 struct drm_property_blob *
4104 drm_property_create_blob(struct drm_device *dev, size_t length,
4107 struct drm_property_blob *blob;
4111 return ERR_PTR(-EINVAL);
4113 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
4115 return ERR_PTR(-ENOMEM);
4117 /* This must be explicitly initialised, so we can safely call list_del
4118 * on it in the removal handler, even if it isn't in a file list. */
4119 INIT_LIST_HEAD(&blob->head_file);
4120 blob->length = length;
4124 memcpy(blob->data, data, length);
4126 mutex_lock(&dev->mode_config.blob_lock);
4128 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
4131 mutex_unlock(&dev->mode_config.blob_lock);
4132 return ERR_PTR(-EINVAL);
4135 kref_init(&blob->refcount);
4137 list_add_tail(&blob->head_global,
4138 &dev->mode_config.property_blob_list);
4140 mutex_unlock(&dev->mode_config.blob_lock);
4144 EXPORT_SYMBOL(drm_property_create_blob);
4147 * drm_property_free_blob - Blob property destructor
4149 * Internal free function for blob properties; must not be used directly.
4153 static void drm_property_free_blob(struct kref *kref)
4155 struct drm_property_blob *blob =
4156 container_of(kref, struct drm_property_blob, refcount);
4158 WARN_ON(!mutex_is_locked(&blob->dev->mode_config.blob_lock));
4160 list_del(&blob->head_global);
4161 list_del(&blob->head_file);
4162 drm_mode_object_put(blob->dev, &blob->base);
4168 * drm_property_unreference_blob - Unreference a blob property
4170 * Drop a reference on a blob property. May free the object.
4172 * @blob: Pointer to blob property
4174 void drm_property_unreference_blob(struct drm_property_blob *blob)
4176 struct drm_device *dev;
4183 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4185 if (kref_put_mutex(&blob->refcount, drm_property_free_blob,
4186 &dev->mode_config.blob_lock))
4187 mutex_unlock(&dev->mode_config.blob_lock);
4189 might_lock(&dev->mode_config.blob_lock);
4191 EXPORT_SYMBOL(drm_property_unreference_blob);
4194 * drm_property_unreference_blob_locked - Unreference a blob property with blob_lock held
4196 * Drop a reference on a blob property. May free the object. This must be
4197 * called with blob_lock held.
4199 * @blob: Pointer to blob property
4201 static void drm_property_unreference_blob_locked(struct drm_property_blob *blob)
4206 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4208 kref_put(&blob->refcount, drm_property_free_blob);
4212 * drm_property_destroy_user_blobs - destroy all blobs created by this client
4214 * @file_priv: destroy all blobs owned by this file handle
4216 void drm_property_destroy_user_blobs(struct drm_device *dev,
4217 struct drm_file *file_priv)
4219 struct drm_property_blob *blob, *bt;
4221 mutex_lock(&dev->mode_config.blob_lock);
4223 list_for_each_entry_safe(blob, bt, &file_priv->blobs, head_file) {
4224 list_del_init(&blob->head_file);
4225 drm_property_unreference_blob_locked(blob);
4228 mutex_unlock(&dev->mode_config.blob_lock);
4232 * drm_property_reference_blob - Take a reference on an existing property
4234 * Take a new reference on an existing blob property.
4236 * @blob: Pointer to blob property
4238 struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob)
4240 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4241 kref_get(&blob->refcount);
4244 EXPORT_SYMBOL(drm_property_reference_blob);
4247 * Like drm_property_lookup_blob, but does not return an additional reference.
4248 * Must be called with blob_lock held.
4250 static struct drm_property_blob *__drm_property_lookup_blob(struct drm_device *dev,
4253 struct drm_mode_object *obj = NULL;
4254 struct drm_property_blob *blob;
4256 WARN_ON(!mutex_is_locked(&dev->mode_config.blob_lock));
4258 mutex_lock(&dev->mode_config.idr_mutex);
4259 obj = idr_find(&dev->mode_config.crtc_idr, id);
4260 if (!obj || (obj->type != DRM_MODE_OBJECT_BLOB) || (obj->id != id))
4263 blob = obj_to_blob(obj);
4264 mutex_unlock(&dev->mode_config.idr_mutex);
4270 * drm_property_lookup_blob - look up a blob property and take a reference
4272 * @id: id of the blob property
4274 * If successful, this takes an additional reference to the blob property.
4275 * callers need to make sure to eventually unreference the returned property
4276 * again, using @drm_property_unreference_blob.
4278 struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
4281 struct drm_property_blob *blob;
4283 mutex_lock(&dev->mode_config.blob_lock);
4284 blob = __drm_property_lookup_blob(dev, id);
4286 if (!kref_get_unless_zero(&blob->refcount))
4289 mutex_unlock(&dev->mode_config.blob_lock);
4293 EXPORT_SYMBOL(drm_property_lookup_blob);
4296 * drm_property_replace_global_blob - atomically replace existing blob property
4298 * @replace: location of blob property pointer to be replaced
4299 * @length: length of data for new blob, or 0 for no data
4300 * @data: content for new blob, or NULL for no data
4301 * @obj_holds_id: optional object for property holding blob ID
4302 * @prop_holds_id: optional property holding blob ID
4303 * @return 0 on success or error on failure
4305 * This function will atomically replace a global property in the blob list,
4306 * optionally updating a property which holds the ID of that property. It is
4307 * guaranteed to be atomic: no caller will be allowed to see intermediate
4308 * results, and either the entire operation will succeed and clean up the
4309 * previous property, or it will fail and the state will be unchanged.
4311 * If length is 0 or data is NULL, no new blob will be created, and the holding
4312 * property, if specified, will be set to 0.
4314 * Access to the replace pointer is assumed to be protected by the caller, e.g.
4315 * by holding the relevant modesetting object lock for its parent.
4317 * For example, a drm_connector has a 'PATH' property, which contains the ID
4318 * of a blob property with the value of the MST path information. Calling this
4319 * function with replace pointing to the connector's path_blob_ptr, length and
4320 * data set for the new path information, obj_holds_id set to the connector's
4321 * base object, and prop_holds_id set to the path property name, will perform
4322 * a completely atomic update. The access to path_blob_ptr is protected by the
4323 * caller holding a lock on the connector.
4325 static int drm_property_replace_global_blob(struct drm_device *dev,
4326 struct drm_property_blob **replace,
4329 struct drm_mode_object *obj_holds_id,
4330 struct drm_property *prop_holds_id)
4332 struct drm_property_blob *new_blob = NULL;
4333 struct drm_property_blob *old_blob = NULL;
4336 WARN_ON(replace == NULL);
4338 old_blob = *replace;
4340 if (length && data) {
4341 new_blob = drm_property_create_blob(dev, length, data);
4342 if (IS_ERR(new_blob))
4343 return PTR_ERR(new_blob);
4346 /* This does not need to be synchronised with blob_lock, as the
4347 * get_properties ioctl locks all modesetting objects, and
4348 * obj_holds_id must be locked before calling here, so we cannot
4349 * have its value out of sync with the list membership modified
4350 * below under blob_lock. */
4352 ret = drm_object_property_set_value(obj_holds_id,
4355 new_blob->base.id : 0);
4360 drm_property_unreference_blob(old_blob);
4361 *replace = new_blob;
4366 drm_property_unreference_blob(new_blob);
4371 * drm_mode_getblob_ioctl - get the contents of a blob property value
4374 * @file_priv: DRM file info
4376 * This function retrieves the contents of a blob property. The value stored in
4377 * an object's blob property is just a normal modeset object id.
4379 * Called by the user via ioctl.
4382 * Zero on success, negative errno on failure.
4384 int drm_mode_getblob_ioctl(struct drm_device *dev,
4385 void *data, struct drm_file *file_priv)
4387 struct drm_mode_get_blob *out_resp = data;
4388 struct drm_property_blob *blob;
4390 void __user *blob_ptr;
4392 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4395 drm_modeset_lock_all(dev);
4396 mutex_lock(&dev->mode_config.blob_lock);
4397 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
4403 if (out_resp->length == blob->length) {
4404 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4405 if (copy_to_user(blob_ptr, blob->data, blob->length)) {
4410 out_resp->length = blob->length;
4413 mutex_unlock(&dev->mode_config.blob_lock);
4414 drm_modeset_unlock_all(dev);
4419 * drm_mode_createblob_ioctl - create a new blob property
4422 * @file_priv: DRM file info
4424 * This function creates a new blob property with user-defined values. In order
4425 * to give us sensible validation and checking when creating, rather than at
4426 * every potential use, we also require a type to be provided upfront.
4428 * Called by the user via ioctl.
4431 * Zero on success, negative errno on failure.
4433 int drm_mode_createblob_ioctl(struct drm_device *dev,
4434 void *data, struct drm_file *file_priv)
4436 struct drm_mode_create_blob *out_resp = data;
4437 struct drm_property_blob *blob;
4438 void __user *blob_ptr;
4441 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4444 blob = drm_property_create_blob(dev, out_resp->length, NULL);
4446 return PTR_ERR(blob);
4448 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4449 if (copy_from_user(blob->data, blob_ptr, out_resp->length)) {
4454 /* Dropping the lock between create_blob and our access here is safe
4455 * as only the same file_priv can remove the blob; at this point, it is
4456 * not associated with any file_priv. */
4457 mutex_lock(&dev->mode_config.blob_lock);
4458 out_resp->blob_id = blob->base.id;
4459 list_add_tail(&file_priv->blobs, &blob->head_file);
4460 mutex_unlock(&dev->mode_config.blob_lock);
4465 drm_property_unreference_blob(blob);
4470 * drm_mode_destroyblob_ioctl - destroy a user blob property
4473 * @file_priv: DRM file info
4475 * Destroy an existing user-defined blob property.
4477 * Called by the user via ioctl.
4480 * Zero on success, negative errno on failure.
4482 int drm_mode_destroyblob_ioctl(struct drm_device *dev,
4483 void *data, struct drm_file *file_priv)
4485 struct drm_mode_destroy_blob *out_resp = data;
4486 struct drm_property_blob *blob = NULL, *bt;
4490 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4493 mutex_lock(&dev->mode_config.blob_lock);
4494 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
4500 /* Ensure the property was actually created by this user. */
4501 list_for_each_entry(bt, &file_priv->blobs, head_file) {
4513 /* We must drop head_file here, because we may not be the last
4514 * reference on the blob. */
4515 list_del_init(&blob->head_file);
4516 drm_property_unreference_blob_locked(blob);
4517 mutex_unlock(&dev->mode_config.blob_lock);
4522 mutex_unlock(&dev->mode_config.blob_lock);
4527 * drm_mode_connector_set_path_property - set tile property on connector
4528 * @connector: connector to set property on.
4529 * @path: path to use for property; must not be NULL.
4531 * This creates a property to expose to userspace to specify a
4532 * connector path. This is mainly used for DisplayPort MST where
4533 * connectors have a topology and we want to allow userspace to give
4534 * them more meaningful names.
4537 * Zero on success, negative errno on failure.
4539 int drm_mode_connector_set_path_property(struct drm_connector *connector,
4542 struct drm_device *dev = connector->dev;
4545 ret = drm_property_replace_global_blob(dev,
4546 &connector->path_blob_ptr,
4550 dev->mode_config.path_property);
4553 EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4556 * drm_mode_connector_set_tile_property - set tile property on connector
4557 * @connector: connector to set property on.
4559 * This looks up the tile information for a connector, and creates a
4560 * property for userspace to parse if it exists. The property is of
4561 * the form of 8 integers using ':' as a separator.
4564 * Zero on success, errno on failure.
4566 int drm_mode_connector_set_tile_property(struct drm_connector *connector)
4568 struct drm_device *dev = connector->dev;
4572 if (!connector->has_tile) {
4573 ret = drm_property_replace_global_blob(dev,
4574 &connector->tile_blob_ptr,
4578 dev->mode_config.tile_property);
4582 snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4583 connector->tile_group->id, connector->tile_is_single_monitor,
4584 connector->num_h_tile, connector->num_v_tile,
4585 connector->tile_h_loc, connector->tile_v_loc,
4586 connector->tile_h_size, connector->tile_v_size);
4588 ret = drm_property_replace_global_blob(dev,
4589 &connector->tile_blob_ptr,
4593 dev->mode_config.tile_property);
4596 EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
4599 * drm_mode_connector_update_edid_property - update the edid property of a connector
4600 * @connector: drm connector
4601 * @edid: new value of the edid property
4603 * This function creates a new blob modeset object and assigns its id to the
4604 * connector's edid property.
4607 * Zero on success, negative errno on failure.
4609 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4610 const struct edid *edid)
4612 struct drm_device *dev = connector->dev;
4616 /* ignore requests to set edid when overridden */
4617 if (connector->override_edid)
4621 size = EDID_LENGTH * (1 + edid->extensions);
4623 ret = drm_property_replace_global_blob(dev,
4624 &connector->edid_blob_ptr,
4628 dev->mode_config.edid_property);
4631 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4633 /* Some properties could refer to dynamic refcnt'd objects, or things that
4634 * need special locking to handle lifetime issues (ie. to ensure the prop
4635 * value doesn't become invalid part way through the property update due to
4636 * race). The value returned by reference via 'obj' should be passed back
4637 * to drm_property_change_valid_put() after the property is set (and the
4638 * object to which the property is attached has a chance to take it's own
4641 bool drm_property_change_valid_get(struct drm_property *property,
4642 uint64_t value, struct drm_mode_object **ref)
4646 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4651 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
4652 if (value < property->values[0] || value > property->values[1])
4655 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4656 int64_t svalue = U642I64(value);
4658 if (svalue < U642I64(property->values[0]) ||
4659 svalue > U642I64(property->values[1]))
4662 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4663 uint64_t valid_mask = 0;
4665 for (i = 0; i < property->num_values; i++)
4666 valid_mask |= (1ULL << property->values[i]);
4667 return !(value & ~valid_mask);
4668 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
4669 struct drm_property_blob *blob;
4674 blob = drm_property_lookup_blob(property->dev, value);
4681 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4682 /* a zero value for an object property translates to null: */
4686 /* handle refcnt'd objects specially: */
4687 if (property->values[0] == DRM_MODE_OBJECT_FB) {
4688 struct drm_framebuffer *fb;
4689 fb = drm_framebuffer_lookup(property->dev, value);
4697 return _object_find(property->dev, value, property->values[0]) != NULL;
4701 for (i = 0; i < property->num_values; i++)
4702 if (property->values[i] == value)
4707 void drm_property_change_valid_put(struct drm_property *property,
4708 struct drm_mode_object *ref)
4713 if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4714 if (property->values[0] == DRM_MODE_OBJECT_FB)
4715 drm_framebuffer_unreference(obj_to_fb(ref));
4716 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4717 drm_property_unreference_blob(obj_to_blob(ref));
4721 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4724 * @file_priv: DRM file info
4726 * This function sets the current value for a connectors's property. It also
4727 * calls into a driver's ->set_property callback to update the hardware state
4729 * Called by the user via ioctl.
4732 * Zero on success, negative errno on failure.
4734 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4735 void *data, struct drm_file *file_priv)
4737 struct drm_mode_connector_set_property *conn_set_prop = data;
4738 struct drm_mode_obj_set_property obj_set_prop = {
4739 .value = conn_set_prop->value,
4740 .prop_id = conn_set_prop->prop_id,
4741 .obj_id = conn_set_prop->connector_id,
4742 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4745 /* It does all the locking and checking we need */
4746 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
4749 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4750 struct drm_property *property,
4754 struct drm_connector *connector = obj_to_connector(obj);
4756 /* Do DPMS ourselves */
4757 if (property == connector->dev->mode_config.dpms_property) {
4759 if (connector->funcs->dpms)
4760 ret = (*connector->funcs->dpms)(connector, (int)value);
4761 } else if (connector->funcs->set_property)
4762 ret = connector->funcs->set_property(connector, property, value);
4764 /* store the property value if successful */
4766 drm_object_property_set_value(&connector->base, property, value);
4770 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4771 struct drm_property *property,
4775 struct drm_crtc *crtc = obj_to_crtc(obj);
4777 if (crtc->funcs->set_property)
4778 ret = crtc->funcs->set_property(crtc, property, value);
4780 drm_object_property_set_value(obj, property, value);
4786 * drm_mode_plane_set_obj_prop - set the value of a property
4787 * @plane: drm plane object to set property value for
4788 * @property: property to set
4789 * @value: value the property should be set to
4791 * This functions sets a given property on a given plane object. This function
4792 * calls the driver's ->set_property callback and changes the software state of
4793 * the property if the callback succeeds.
4796 * Zero on success, error code on failure.
4798 int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4799 struct drm_property *property,
4803 struct drm_mode_object *obj = &plane->base;
4805 if (plane->funcs->set_property)
4806 ret = plane->funcs->set_property(plane, property, value);
4808 drm_object_property_set_value(obj, property, value);
4812 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4815 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4818 * @file_priv: DRM file info
4820 * This function retrieves the current value for an object's property. Compared
4821 * to the connector specific ioctl this one is extended to also work on crtc and
4824 * Called by the user via ioctl.
4827 * Zero on success, negative errno on failure.
4829 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4830 struct drm_file *file_priv)
4832 struct drm_mode_obj_get_properties *arg = data;
4833 struct drm_mode_object *obj;
4836 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4839 drm_modeset_lock_all(dev);
4841 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4846 if (!obj->properties) {
4851 ret = get_properties(obj, file_priv->atomic,
4852 (uint32_t __user *)(unsigned long)(arg->props_ptr),
4853 (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
4857 drm_modeset_unlock_all(dev);
4862 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4865 * @file_priv: DRM file info
4867 * This function sets the current value for an object's property. It also calls
4868 * into a driver's ->set_property callback to update the hardware state.
4869 * Compared to the connector specific ioctl this one is extended to also work on
4870 * crtc and plane objects.
4872 * Called by the user via ioctl.
4875 * Zero on success, negative errno on failure.
4877 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4878 struct drm_file *file_priv)
4880 struct drm_mode_obj_set_property *arg = data;
4881 struct drm_mode_object *arg_obj;
4882 struct drm_mode_object *prop_obj;
4883 struct drm_property *property;
4884 int i, ret = -EINVAL;
4885 struct drm_mode_object *ref;
4887 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4890 drm_modeset_lock_all(dev);
4892 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4897 if (!arg_obj->properties)
4900 for (i = 0; i < arg_obj->properties->count; i++)
4901 if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
4904 if (i == arg_obj->properties->count)
4907 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4908 DRM_MODE_OBJECT_PROPERTY);
4913 property = obj_to_property(prop_obj);
4915 if (!drm_property_change_valid_get(property, arg->value, &ref))
4918 switch (arg_obj->type) {
4919 case DRM_MODE_OBJECT_CONNECTOR:
4920 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4923 case DRM_MODE_OBJECT_CRTC:
4924 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4926 case DRM_MODE_OBJECT_PLANE:
4927 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
4928 property, arg->value);
4932 drm_property_change_valid_put(property, ref);
4935 drm_modeset_unlock_all(dev);
4940 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4941 * @connector: connector to attach
4942 * @encoder: encoder to attach @connector to
4944 * This function links up a connector to an encoder. Note that the routing
4945 * restrictions between encoders and crtcs are exposed to userspace through the
4946 * possible_clones and possible_crtcs bitmasks.
4949 * Zero on success, negative errno on failure.
4951 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4952 struct drm_encoder *encoder)
4956 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4957 if (connector->encoder_ids[i] == 0) {
4958 connector->encoder_ids[i] = encoder->base.id;
4964 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4967 * drm_mode_crtc_set_gamma_size - set the gamma table size
4968 * @crtc: CRTC to set the gamma table size for
4969 * @gamma_size: size of the gamma table
4971 * Drivers which support gamma tables should set this to the supported gamma
4972 * table size when initializing the CRTC. Currently the drm core only supports a
4973 * fixed gamma table size.
4976 * Zero on success, negative errno on failure.
4978 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
4981 crtc->gamma_size = gamma_size;
4983 crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
4985 if (!crtc->gamma_store) {
4986 crtc->gamma_size = 0;
4992 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
4995 * drm_mode_gamma_set_ioctl - set the gamma table
4998 * @file_priv: DRM file info
5000 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
5001 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
5003 * Called by the user via ioctl.
5006 * Zero on success, negative errno on failure.
5008 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
5009 void *data, struct drm_file *file_priv)
5011 struct drm_mode_crtc_lut *crtc_lut = data;
5012 struct drm_crtc *crtc;
5013 void *r_base, *g_base, *b_base;
5017 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5020 drm_modeset_lock_all(dev);
5021 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5027 if (crtc->funcs->gamma_set == NULL) {
5032 /* memcpy into gamma store */
5033 if (crtc_lut->gamma_size != crtc->gamma_size) {
5038 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5039 r_base = crtc->gamma_store;
5040 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
5045 g_base = r_base + size;
5046 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
5051 b_base = g_base + size;
5052 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
5057 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
5060 drm_modeset_unlock_all(dev);
5066 * drm_mode_gamma_get_ioctl - get the gamma table
5069 * @file_priv: DRM file info
5071 * Copy the current gamma table into the storage provided. This also provides
5072 * the gamma table size the driver expects, which can be used to size the
5073 * allocated storage.
5075 * Called by the user via ioctl.
5078 * Zero on success, negative errno on failure.
5080 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
5081 void *data, struct drm_file *file_priv)
5083 struct drm_mode_crtc_lut *crtc_lut = data;
5084 struct drm_crtc *crtc;
5085 void *r_base, *g_base, *b_base;
5089 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5092 drm_modeset_lock_all(dev);
5093 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5099 /* memcpy into gamma store */
5100 if (crtc_lut->gamma_size != crtc->gamma_size) {
5105 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5106 r_base = crtc->gamma_store;
5107 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
5112 g_base = r_base + size;
5113 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
5118 b_base = g_base + size;
5119 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
5124 drm_modeset_unlock_all(dev);
5129 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
5132 * @file_priv: DRM file info
5134 * This schedules an asynchronous update on a given CRTC, called page flip.
5135 * Optionally a drm event is generated to signal the completion of the event.
5136 * Generic drivers cannot assume that a pageflip with changed framebuffer
5137 * properties (including driver specific metadata like tiling layout) will work,
5138 * but some drivers support e.g. pixel format changes through the pageflip
5141 * Called by the user via ioctl.
5144 * Zero on success, negative errno on failure.
5146 int drm_mode_page_flip_ioctl(struct drm_device *dev,
5147 void *data, struct drm_file *file_priv)
5149 struct drm_mode_crtc_page_flip *page_flip = data;
5150 struct drm_crtc *crtc;
5151 struct drm_framebuffer *fb = NULL;
5152 struct drm_pending_vblank_event *e = NULL;
5153 unsigned long flags;
5156 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
5157 page_flip->reserved != 0)
5160 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
5163 crtc = drm_crtc_find(dev, page_flip->crtc_id);
5167 drm_modeset_lock_crtc(crtc, crtc->primary);
5168 if (crtc->primary->fb == NULL) {
5169 /* The framebuffer is currently unbound, presumably
5170 * due to a hotplug event, that userspace has not
5177 if (crtc->funcs->page_flip == NULL)
5180 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
5186 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
5190 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
5191 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
5196 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
5198 spin_lock_irqsave(&dev->event_lock, flags);
5199 if (file_priv->event_space < sizeof(e->event)) {
5200 spin_unlock_irqrestore(&dev->event_lock, flags);
5203 file_priv->event_space -= sizeof(e->event);
5204 spin_unlock_irqrestore(&dev->event_lock, flags);
5206 e = kzalloc(sizeof(*e), GFP_KERNEL);
5208 spin_lock_irqsave(&dev->event_lock, flags);
5209 file_priv->event_space += sizeof(e->event);
5210 spin_unlock_irqrestore(&dev->event_lock, flags);
5214 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
5215 e->event.base.length = sizeof(e->event);
5216 e->event.user_data = page_flip->user_data;
5217 e->base.event = &e->event.base;
5218 e->base.file_priv = file_priv;
5220 (void (*) (struct drm_pending_event *)) kfree;
5223 crtc->primary->old_fb = crtc->primary->fb;
5224 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
5226 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
5227 spin_lock_irqsave(&dev->event_lock, flags);
5228 file_priv->event_space += sizeof(e->event);
5229 spin_unlock_irqrestore(&dev->event_lock, flags);
5232 /* Keep the old fb, don't unref it. */
5233 crtc->primary->old_fb = NULL;
5235 crtc->primary->fb = fb;
5236 /* Unref only the old framebuffer. */
5242 drm_framebuffer_unreference(fb);
5243 if (crtc->primary->old_fb)
5244 drm_framebuffer_unreference(crtc->primary->old_fb);
5245 crtc->primary->old_fb = NULL;
5246 drm_modeset_unlock_crtc(crtc);
5252 * drm_mode_config_reset - call ->reset callbacks
5255 * This functions calls all the crtc's, encoder's and connector's ->reset
5256 * callback. Drivers can use this in e.g. their driver load or resume code to
5257 * reset hardware and software state.
5259 void drm_mode_config_reset(struct drm_device *dev)
5261 struct drm_crtc *crtc;
5262 struct drm_plane *plane;
5263 struct drm_encoder *encoder;
5264 struct drm_connector *connector;
5266 drm_for_each_plane(plane, dev)
5267 if (plane->funcs->reset)
5268 plane->funcs->reset(plane);
5270 drm_for_each_crtc(crtc, dev)
5271 if (crtc->funcs->reset)
5272 crtc->funcs->reset(crtc);
5274 drm_for_each_encoder(encoder, dev)
5275 if (encoder->funcs->reset)
5276 encoder->funcs->reset(encoder);
5278 mutex_lock(&dev->mode_config.mutex);
5279 drm_for_each_connector(connector, dev)
5280 if (connector->funcs->reset)
5281 connector->funcs->reset(connector);
5282 mutex_unlock(&dev->mode_config.mutex);
5284 EXPORT_SYMBOL(drm_mode_config_reset);
5287 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5290 * @file_priv: DRM file info
5292 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5293 * TTM or something else entirely) and returns the resulting buffer handle. This
5294 * handle can then be wrapped up into a framebuffer modeset object.
5296 * Note that userspace is not allowed to use such objects for render
5297 * acceleration - drivers must create their own private ioctls for such a use
5300 * Called by the user via ioctl.
5303 * Zero on success, negative errno on failure.
5305 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
5306 void *data, struct drm_file *file_priv)
5308 struct drm_mode_create_dumb *args = data;
5309 u32 cpp, stride, size;
5311 if (!dev->driver->dumb_create)
5313 if (!args->width || !args->height || !args->bpp)
5316 /* overflow checks for 32bit size calculations */
5317 /* NOTE: DIV_ROUND_UP() can overflow */
5318 cpp = DIV_ROUND_UP(args->bpp, 8);
5319 if (!cpp || cpp > 0xffffffffU / args->width)
5321 stride = cpp * args->width;
5322 if (args->height > 0xffffffffU / stride)
5325 /* test for wrap-around */
5326 size = args->height * stride;
5327 if (PAGE_ALIGN(size) == 0)
5331 * handle, pitch and size are output parameters. Zero them out to
5332 * prevent drivers from accidentally using uninitialized data. Since
5333 * not all existing userspace is clearing these fields properly we
5334 * cannot reject IOCTL with garbage in them.
5340 return dev->driver->dumb_create(file_priv, dev, args);
5344 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5347 * @file_priv: DRM file info
5349 * Allocate an offset in the drm device node's address space to be able to
5350 * memory map a dumb buffer.
5352 * Called by the user via ioctl.
5355 * Zero on success, negative errno on failure.
5357 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
5358 void *data, struct drm_file *file_priv)
5360 struct drm_mode_map_dumb *args = data;
5362 /* call driver ioctl to get mmap offset */
5363 if (!dev->driver->dumb_map_offset)
5366 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
5370 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5373 * @file_priv: DRM file info
5375 * This destroys the userspace handle for the given dumb backing storage buffer.
5376 * Since buffer objects must be reference counted in the kernel a buffer object
5377 * won't be immediately freed if a framebuffer modeset object still uses it.
5379 * Called by the user via ioctl.
5382 * Zero on success, negative errno on failure.
5384 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
5385 void *data, struct drm_file *file_priv)
5387 struct drm_mode_destroy_dumb *args = data;
5389 if (!dev->driver->dumb_destroy)
5392 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
5396 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5397 * @format: pixel format (DRM_FORMAT_*)
5398 * @depth: storage for the depth value
5399 * @bpp: storage for the bpp value
5401 * This only supports RGB formats here for compat with code that doesn't use
5402 * pixel formats directly yet.
5404 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
5409 case DRM_FORMAT_RGB332:
5410 case DRM_FORMAT_BGR233:
5414 case DRM_FORMAT_XRGB1555:
5415 case DRM_FORMAT_XBGR1555:
5416 case DRM_FORMAT_RGBX5551:
5417 case DRM_FORMAT_BGRX5551:
5418 case DRM_FORMAT_ARGB1555:
5419 case DRM_FORMAT_ABGR1555:
5420 case DRM_FORMAT_RGBA5551:
5421 case DRM_FORMAT_BGRA5551:
5425 case DRM_FORMAT_RGB565:
5426 case DRM_FORMAT_BGR565:
5430 case DRM_FORMAT_RGB888:
5431 case DRM_FORMAT_BGR888:
5435 case DRM_FORMAT_XRGB8888:
5436 case DRM_FORMAT_XBGR8888:
5437 case DRM_FORMAT_RGBX8888:
5438 case DRM_FORMAT_BGRX8888:
5442 case DRM_FORMAT_XRGB2101010:
5443 case DRM_FORMAT_XBGR2101010:
5444 case DRM_FORMAT_RGBX1010102:
5445 case DRM_FORMAT_BGRX1010102:
5446 case DRM_FORMAT_ARGB2101010:
5447 case DRM_FORMAT_ABGR2101010:
5448 case DRM_FORMAT_RGBA1010102:
5449 case DRM_FORMAT_BGRA1010102:
5453 case DRM_FORMAT_ARGB8888:
5454 case DRM_FORMAT_ABGR8888:
5455 case DRM_FORMAT_RGBA8888:
5456 case DRM_FORMAT_BGRA8888:
5461 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5462 drm_get_format_name(format));
5468 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
5471 * drm_format_num_planes - get the number of planes for format
5472 * @format: pixel format (DRM_FORMAT_*)
5475 * The number of planes used by the specified pixel format.
5477 int drm_format_num_planes(uint32_t format)
5480 case DRM_FORMAT_YUV410:
5481 case DRM_FORMAT_YVU410:
5482 case DRM_FORMAT_YUV411:
5483 case DRM_FORMAT_YVU411:
5484 case DRM_FORMAT_YUV420:
5485 case DRM_FORMAT_YVU420:
5486 case DRM_FORMAT_YUV422:
5487 case DRM_FORMAT_YVU422:
5488 case DRM_FORMAT_YUV444:
5489 case DRM_FORMAT_YVU444:
5491 case DRM_FORMAT_NV12:
5492 case DRM_FORMAT_NV21:
5493 case DRM_FORMAT_NV16:
5494 case DRM_FORMAT_NV61:
5495 case DRM_FORMAT_NV24:
5496 case DRM_FORMAT_NV42:
5502 EXPORT_SYMBOL(drm_format_num_planes);
5505 * drm_format_plane_cpp - determine the bytes per pixel value
5506 * @format: pixel format (DRM_FORMAT_*)
5507 * @plane: plane index
5510 * The bytes per pixel value for the specified plane.
5512 int drm_format_plane_cpp(uint32_t format, int plane)
5517 if (plane >= drm_format_num_planes(format))
5521 case DRM_FORMAT_YUYV:
5522 case DRM_FORMAT_YVYU:
5523 case DRM_FORMAT_UYVY:
5524 case DRM_FORMAT_VYUY:
5526 case DRM_FORMAT_NV12:
5527 case DRM_FORMAT_NV21:
5528 case DRM_FORMAT_NV16:
5529 case DRM_FORMAT_NV61:
5530 case DRM_FORMAT_NV24:
5531 case DRM_FORMAT_NV42:
5532 return plane ? 2 : 1;
5533 case DRM_FORMAT_YUV410:
5534 case DRM_FORMAT_YVU410:
5535 case DRM_FORMAT_YUV411:
5536 case DRM_FORMAT_YVU411:
5537 case DRM_FORMAT_YUV420:
5538 case DRM_FORMAT_YVU420:
5539 case DRM_FORMAT_YUV422:
5540 case DRM_FORMAT_YVU422:
5541 case DRM_FORMAT_YUV444:
5542 case DRM_FORMAT_YVU444:
5545 drm_fb_get_bpp_depth(format, &depth, &bpp);
5549 EXPORT_SYMBOL(drm_format_plane_cpp);
5552 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5553 * @format: pixel format (DRM_FORMAT_*)
5556 * The horizontal chroma subsampling factor for the
5557 * specified pixel format.
5559 int drm_format_horz_chroma_subsampling(uint32_t format)
5562 case DRM_FORMAT_YUV411:
5563 case DRM_FORMAT_YVU411:
5564 case DRM_FORMAT_YUV410:
5565 case DRM_FORMAT_YVU410:
5567 case DRM_FORMAT_YUYV:
5568 case DRM_FORMAT_YVYU:
5569 case DRM_FORMAT_UYVY:
5570 case DRM_FORMAT_VYUY:
5571 case DRM_FORMAT_NV12:
5572 case DRM_FORMAT_NV21:
5573 case DRM_FORMAT_NV16:
5574 case DRM_FORMAT_NV61:
5575 case DRM_FORMAT_YUV422:
5576 case DRM_FORMAT_YVU422:
5577 case DRM_FORMAT_YUV420:
5578 case DRM_FORMAT_YVU420:
5584 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5587 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5588 * @format: pixel format (DRM_FORMAT_*)
5591 * The vertical chroma subsampling factor for the
5592 * specified pixel format.
5594 int drm_format_vert_chroma_subsampling(uint32_t format)
5597 case DRM_FORMAT_YUV410:
5598 case DRM_FORMAT_YVU410:
5600 case DRM_FORMAT_YUV420:
5601 case DRM_FORMAT_YVU420:
5602 case DRM_FORMAT_NV12:
5603 case DRM_FORMAT_NV21:
5609 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
5612 * drm_rotation_simplify() - Try to simplify the rotation
5613 * @rotation: Rotation to be simplified
5614 * @supported_rotations: Supported rotations
5616 * Attempt to simplify the rotation to a form that is supported.
5617 * Eg. if the hardware supports everything except DRM_REFLECT_X
5618 * one could call this function like this:
5620 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5621 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5622 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5624 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5625 * transforms the hardware supports, this function may not
5626 * be able to produce a supported transform, so the caller should
5627 * check the result afterwards.
5629 unsigned int drm_rotation_simplify(unsigned int rotation,
5630 unsigned int supported_rotations)
5632 if (rotation & ~supported_rotations) {
5633 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5634 rotation = (rotation & DRM_REFLECT_MASK) |
5635 BIT((ffs(rotation & DRM_ROTATE_MASK) + 1) % 4);
5640 EXPORT_SYMBOL(drm_rotation_simplify);
5643 * drm_mode_config_init - initialize DRM mode_configuration structure
5646 * Initialize @dev's mode_config structure, used for tracking the graphics
5647 * configuration of @dev.
5649 * Since this initializes the modeset locks, no locking is possible. Which is no
5650 * problem, since this should happen single threaded at init time. It is the
5651 * driver's problem to ensure this guarantee.
5654 void drm_mode_config_init(struct drm_device *dev)
5656 mutex_init(&dev->mode_config.mutex);
5657 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
5658 mutex_init(&dev->mode_config.idr_mutex);
5659 mutex_init(&dev->mode_config.fb_lock);
5660 mutex_init(&dev->mode_config.blob_lock);
5661 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5662 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5663 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5664 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5665 INIT_LIST_HEAD(&dev->mode_config.property_list);
5666 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5667 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5668 idr_init(&dev->mode_config.crtc_idr);
5669 idr_init(&dev->mode_config.tile_idr);
5671 drm_modeset_lock_all(dev);
5672 drm_mode_create_standard_properties(dev);
5673 drm_modeset_unlock_all(dev);
5675 /* Just to be sure */
5676 dev->mode_config.num_fb = 0;
5677 dev->mode_config.num_connector = 0;
5678 dev->mode_config.num_crtc = 0;
5679 dev->mode_config.num_encoder = 0;
5680 dev->mode_config.num_overlay_plane = 0;
5681 dev->mode_config.num_total_plane = 0;
5683 EXPORT_SYMBOL(drm_mode_config_init);
5686 * drm_mode_config_cleanup - free up DRM mode_config info
5689 * Free up all the connectors and CRTCs associated with this DRM device, then
5690 * free up the framebuffers and associated buffer objects.
5692 * Note that since this /should/ happen single-threaded at driver/device
5693 * teardown time, no locking is required. It's the driver's job to ensure that
5694 * this guarantee actually holds true.
5696 * FIXME: cleanup any dangling user buffer objects too
5698 void drm_mode_config_cleanup(struct drm_device *dev)
5700 struct drm_connector *connector, *ot;
5701 struct drm_crtc *crtc, *ct;
5702 struct drm_encoder *encoder, *enct;
5703 struct drm_framebuffer *fb, *fbt;
5704 struct drm_property *property, *pt;
5705 struct drm_property_blob *blob, *bt;
5706 struct drm_plane *plane, *plt;
5708 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5710 encoder->funcs->destroy(encoder);
5713 list_for_each_entry_safe(connector, ot,
5714 &dev->mode_config.connector_list, head) {
5715 connector->funcs->destroy(connector);
5718 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5720 drm_property_destroy(dev, property);
5723 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5725 drm_property_unreference_blob(blob);
5729 * Single-threaded teardown context, so it's not required to grab the
5730 * fb_lock to protect against concurrent fb_list access. Contrary, it
5731 * would actually deadlock with the drm_framebuffer_cleanup function.
5733 * Also, if there are any framebuffers left, that's a driver leak now,
5734 * so politely WARN about this.
5736 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5737 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5738 drm_framebuffer_free(&fb->refcount);
5741 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5743 plane->funcs->destroy(plane);
5746 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5747 crtc->funcs->destroy(crtc);
5750 idr_destroy(&dev->mode_config.tile_idr);
5751 idr_destroy(&dev->mode_config.crtc_idr);
5752 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
5754 EXPORT_SYMBOL(drm_mode_config_cleanup);
5756 struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5757 unsigned int supported_rotations)
5759 static const struct drm_prop_enum_list props[] = {
5760 { DRM_ROTATE_0, "rotate-0" },
5761 { DRM_ROTATE_90, "rotate-90" },
5762 { DRM_ROTATE_180, "rotate-180" },
5763 { DRM_ROTATE_270, "rotate-270" },
5764 { DRM_REFLECT_X, "reflect-x" },
5765 { DRM_REFLECT_Y, "reflect-y" },
5768 return drm_property_create_bitmask(dev, 0, "rotation",
5769 props, ARRAY_SIZE(props),
5770 supported_rotations);
5772 EXPORT_SYMBOL(drm_mode_create_rotation_property);
5777 * Tile groups are used to represent tiled monitors with a unique
5778 * integer identifier. Tiled monitors using DisplayID v1.3 have
5779 * a unique 8-byte handle, we store this in a tile group, so we
5780 * have a common identifier for all tiles in a monitor group.
5782 static void drm_tile_group_free(struct kref *kref)
5784 struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
5785 struct drm_device *dev = tg->dev;
5786 mutex_lock(&dev->mode_config.idr_mutex);
5787 idr_remove(&dev->mode_config.tile_idr, tg->id);
5788 mutex_unlock(&dev->mode_config.idr_mutex);
5793 * drm_mode_put_tile_group - drop a reference to a tile group.
5795 * @tg: tile group to drop reference to.
5797 * drop reference to tile group and free if 0.
5799 void drm_mode_put_tile_group(struct drm_device *dev,
5800 struct drm_tile_group *tg)
5802 kref_put(&tg->refcount, drm_tile_group_free);
5806 * drm_mode_get_tile_group - get a reference to an existing tile group
5808 * @topology: 8-bytes unique per monitor.
5810 * Use the unique bytes to get a reference to an existing tile group.
5813 * tile group or NULL if not found.
5815 struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
5818 struct drm_tile_group *tg;
5820 mutex_lock(&dev->mode_config.idr_mutex);
5821 idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
5822 if (!memcmp(tg->group_data, topology, 8)) {
5823 if (!kref_get_unless_zero(&tg->refcount))
5825 mutex_unlock(&dev->mode_config.idr_mutex);
5829 mutex_unlock(&dev->mode_config.idr_mutex);
5832 EXPORT_SYMBOL(drm_mode_get_tile_group);
5835 * drm_mode_create_tile_group - create a tile group from a displayid description
5837 * @topology: 8-bytes unique per monitor.
5839 * Create a tile group for the unique monitor, and get a unique
5840 * identifier for the tile group.
5843 * new tile group or error.
5845 struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
5848 struct drm_tile_group *tg;
5851 tg = kzalloc(sizeof(*tg), GFP_KERNEL);
5853 return ERR_PTR(-ENOMEM);
5855 kref_init(&tg->refcount);
5856 memcpy(tg->group_data, topology, 8);
5859 mutex_lock(&dev->mode_config.idr_mutex);
5860 ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
5868 mutex_unlock(&dev->mode_config.idr_mutex);
5871 EXPORT_SYMBOL(drm_mode_create_tile_group);