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
660 * @name: printf style format string for the CRTC name, or NULL for default name
662 * Inits a new object created as base part of a driver crtc object.
665 * Zero on success, error code on failure.
667 int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
668 struct drm_plane *primary,
669 struct drm_plane *cursor,
670 const struct drm_crtc_funcs *funcs,
671 const char *name, ...)
673 struct drm_mode_config *config = &dev->mode_config;
676 WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY);
677 WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR);
682 drm_modeset_lock_init(&crtc->mutex);
683 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
687 crtc->base.properties = &crtc->properties;
689 list_add_tail(&crtc->head, &config->crtc_list);
692 crtc->primary = primary;
693 crtc->cursor = cursor;
695 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
697 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
699 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
700 drm_object_attach_property(&crtc->base, config->prop_active, 0);
701 drm_object_attach_property(&crtc->base, config->prop_mode_id, 0);
706 EXPORT_SYMBOL(drm_crtc_init_with_planes);
709 * drm_crtc_cleanup - Clean up the core crtc usage
710 * @crtc: CRTC to cleanup
712 * This function cleans up @crtc and removes it from the DRM mode setting
713 * core. Note that the function does *not* free the crtc structure itself,
714 * this is the responsibility of the caller.
716 void drm_crtc_cleanup(struct drm_crtc *crtc)
718 struct drm_device *dev = crtc->dev;
720 kfree(crtc->gamma_store);
721 crtc->gamma_store = NULL;
723 drm_modeset_lock_fini(&crtc->mutex);
725 drm_mode_object_put(dev, &crtc->base);
726 list_del(&crtc->head);
727 dev->mode_config.num_crtc--;
729 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
730 if (crtc->state && crtc->funcs->atomic_destroy_state)
731 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
733 memset(crtc, 0, sizeof(*crtc));
735 EXPORT_SYMBOL(drm_crtc_cleanup);
738 * drm_crtc_index - find the index of a registered CRTC
739 * @crtc: CRTC to find index for
741 * Given a registered CRTC, return the index of that CRTC within a DRM
742 * device's list of CRTCs.
744 unsigned int drm_crtc_index(struct drm_crtc *crtc)
746 unsigned int index = 0;
747 struct drm_crtc *tmp;
749 drm_for_each_crtc(tmp, crtc->dev) {
758 EXPORT_SYMBOL(drm_crtc_index);
761 * drm_mode_remove - remove and free a mode
762 * @connector: connector list to modify
763 * @mode: mode to remove
765 * Remove @mode from @connector's mode list, then free it.
767 static void drm_mode_remove(struct drm_connector *connector,
768 struct drm_display_mode *mode)
770 list_del(&mode->head);
771 drm_mode_destroy(connector->dev, mode);
775 * drm_display_info_set_bus_formats - set the supported bus formats
776 * @info: display info to store bus formats in
777 * @formats: array containing the supported bus formats
778 * @num_formats: the number of entries in the fmts array
780 * Store the supported bus formats in display info structure.
781 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
782 * a full list of available formats.
784 int drm_display_info_set_bus_formats(struct drm_display_info *info,
786 unsigned int num_formats)
790 if (!formats && num_formats)
793 if (formats && num_formats) {
794 fmts = kmemdup(formats, sizeof(*formats) * num_formats,
800 kfree(info->bus_formats);
801 info->bus_formats = fmts;
802 info->num_bus_formats = num_formats;
806 EXPORT_SYMBOL(drm_display_info_set_bus_formats);
809 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
810 * @connector: connector to quwery
812 * The kernel supports per-connector configration of its consoles through
813 * use of the video= parameter. This function parses that option and
814 * extracts the user's specified mode (or enable/disable status) for a
815 * particular connector. This is typically only used during the early fbdev
818 static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
820 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
823 if (fb_get_options(connector->name, &option))
826 if (!drm_mode_parse_command_line_for_connector(option,
834 switch (mode->force) {
838 case DRM_FORCE_ON_DIGITAL:
847 DRM_INFO("forcing %s connector %s\n", connector->name, s);
848 connector->force = mode->force;
851 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
853 mode->xres, mode->yres,
854 mode->refresh_specified ? mode->refresh : 60,
855 mode->rb ? " reduced blanking" : "",
856 mode->margins ? " with margins" : "",
857 mode->interlace ? " interlaced" : "");
861 * drm_connector_init - Init a preallocated connector
863 * @connector: the connector to init
864 * @funcs: callbacks for this connector
865 * @connector_type: user visible type of the connector
867 * Initialises a preallocated connector. Connectors should be
868 * subclassed as part of driver connector objects.
871 * Zero on success, error code on failure.
873 int drm_connector_init(struct drm_device *dev,
874 struct drm_connector *connector,
875 const struct drm_connector_funcs *funcs,
878 struct drm_mode_config *config = &dev->mode_config;
880 struct ida *connector_ida =
881 &drm_connector_enum_list[connector_type].ida;
883 drm_modeset_lock_all(dev);
885 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false);
889 connector->base.properties = &connector->properties;
890 connector->dev = dev;
891 connector->funcs = funcs;
892 connector->connector_type = connector_type;
893 connector->connector_type_id =
894 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
895 if (connector->connector_type_id < 0) {
896 ret = connector->connector_type_id;
900 kasprintf(GFP_KERNEL, "%s-%d",
901 drm_connector_enum_list[connector_type].name,
902 connector->connector_type_id);
903 if (!connector->name) {
908 INIT_LIST_HEAD(&connector->probed_modes);
909 INIT_LIST_HEAD(&connector->modes);
910 connector->edid_blob_ptr = NULL;
911 connector->status = connector_status_unknown;
913 drm_connector_get_cmdline_mode(connector);
915 /* We should add connectors at the end to avoid upsetting the connector
917 list_add_tail(&connector->head, &config->connector_list);
918 config->num_connector++;
920 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
921 drm_object_attach_property(&connector->base,
922 config->edid_property,
925 drm_object_attach_property(&connector->base,
926 config->dpms_property, 0);
928 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
929 drm_object_attach_property(&connector->base, config->prop_crtc_id, 0);
932 connector->debugfs_entry = NULL;
936 drm_mode_object_put(dev, &connector->base);
939 drm_modeset_unlock_all(dev);
943 EXPORT_SYMBOL(drm_connector_init);
946 * drm_connector_cleanup - cleans up an initialised connector
947 * @connector: connector to cleanup
949 * Cleans up the connector but doesn't free the object.
951 void drm_connector_cleanup(struct drm_connector *connector)
953 struct drm_device *dev = connector->dev;
954 struct drm_display_mode *mode, *t;
956 if (connector->tile_group) {
957 drm_mode_put_tile_group(dev, connector->tile_group);
958 connector->tile_group = NULL;
961 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
962 drm_mode_remove(connector, mode);
964 list_for_each_entry_safe(mode, t, &connector->modes, head)
965 drm_mode_remove(connector, mode);
967 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
968 connector->connector_type_id);
970 kfree(connector->display_info.bus_formats);
971 drm_mode_object_put(dev, &connector->base);
972 kfree(connector->name);
973 connector->name = NULL;
974 list_del(&connector->head);
975 dev->mode_config.num_connector--;
977 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
978 if (connector->state && connector->funcs->atomic_destroy_state)
979 connector->funcs->atomic_destroy_state(connector,
982 memset(connector, 0, sizeof(*connector));
984 EXPORT_SYMBOL(drm_connector_cleanup);
987 * drm_connector_index - find the index of a registered connector
988 * @connector: connector to find index for
990 * Given a registered connector, return the index of that connector within a DRM
991 * device's list of connectors.
993 unsigned int drm_connector_index(struct drm_connector *connector)
995 unsigned int index = 0;
996 struct drm_connector *tmp;
997 struct drm_mode_config *config = &connector->dev->mode_config;
999 WARN_ON(!drm_modeset_is_locked(&config->connection_mutex));
1001 drm_for_each_connector(tmp, connector->dev) {
1002 if (tmp == connector)
1010 EXPORT_SYMBOL(drm_connector_index);
1013 * drm_connector_register - register a connector
1014 * @connector: the connector to register
1016 * Register userspace interfaces for a connector
1019 * Zero on success, error code on failure.
1021 int drm_connector_register(struct drm_connector *connector)
1025 drm_mode_object_register(connector->dev, &connector->base);
1027 ret = drm_sysfs_connector_add(connector);
1031 ret = drm_debugfs_connector_add(connector);
1033 drm_sysfs_connector_remove(connector);
1039 EXPORT_SYMBOL(drm_connector_register);
1042 * drm_connector_unregister - unregister a connector
1043 * @connector: the connector to unregister
1045 * Unregister userspace interfaces for a connector
1047 void drm_connector_unregister(struct drm_connector *connector)
1049 drm_sysfs_connector_remove(connector);
1050 drm_debugfs_connector_remove(connector);
1052 EXPORT_SYMBOL(drm_connector_unregister);
1056 * drm_connector_unplug_all - unregister connector userspace interfaces
1059 * This function unregisters all connector userspace interfaces in sysfs. Should
1060 * be call when the device is disconnected, e.g. from an usb driver's
1061 * ->disconnect callback.
1063 void drm_connector_unplug_all(struct drm_device *dev)
1065 struct drm_connector *connector;
1067 /* FIXME: taking the mode config mutex ends up in a clash with sysfs */
1068 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1069 drm_connector_unregister(connector);
1072 EXPORT_SYMBOL(drm_connector_unplug_all);
1075 * drm_encoder_init - Init a preallocated encoder
1077 * @encoder: the encoder to init
1078 * @funcs: callbacks for this encoder
1079 * @encoder_type: user visible type of the encoder
1081 * Initialises a preallocated encoder. Encoder should be
1082 * subclassed as part of driver encoder objects.
1085 * Zero on success, error code on failure.
1087 int drm_encoder_init(struct drm_device *dev,
1088 struct drm_encoder *encoder,
1089 const struct drm_encoder_funcs *funcs,
1094 drm_modeset_lock_all(dev);
1096 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1101 encoder->encoder_type = encoder_type;
1102 encoder->funcs = funcs;
1103 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1104 drm_encoder_enum_list[encoder_type].name,
1106 if (!encoder->name) {
1111 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1112 dev->mode_config.num_encoder++;
1116 drm_mode_object_put(dev, &encoder->base);
1119 drm_modeset_unlock_all(dev);
1123 EXPORT_SYMBOL(drm_encoder_init);
1126 * drm_encoder_cleanup - cleans up an initialised encoder
1127 * @encoder: encoder to cleanup
1129 * Cleans up the encoder but doesn't free the object.
1131 void drm_encoder_cleanup(struct drm_encoder *encoder)
1133 struct drm_device *dev = encoder->dev;
1135 drm_modeset_lock_all(dev);
1136 drm_mode_object_put(dev, &encoder->base);
1137 kfree(encoder->name);
1138 list_del(&encoder->head);
1139 dev->mode_config.num_encoder--;
1140 drm_modeset_unlock_all(dev);
1142 memset(encoder, 0, sizeof(*encoder));
1144 EXPORT_SYMBOL(drm_encoder_cleanup);
1147 * drm_universal_plane_init - Initialize a new universal plane object
1149 * @plane: plane object to init
1150 * @possible_crtcs: bitmask of possible CRTCs
1151 * @funcs: callbacks for the new plane
1152 * @formats: array of supported formats (%DRM_FORMAT_*)
1153 * @format_count: number of elements in @formats
1154 * @type: type of plane (overlay, primary, cursor)
1156 * Initializes a plane object of type @type.
1159 * Zero on success, error code on failure.
1161 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1162 unsigned long possible_crtcs,
1163 const struct drm_plane_funcs *funcs,
1164 const uint32_t *formats, unsigned int format_count,
1165 enum drm_plane_type type)
1167 struct drm_mode_config *config = &dev->mode_config;
1170 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1174 drm_modeset_lock_init(&plane->mutex);
1176 plane->base.properties = &plane->properties;
1178 plane->funcs = funcs;
1179 plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
1181 if (!plane->format_types) {
1182 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1183 drm_mode_object_put(dev, &plane->base);
1187 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1188 plane->format_count = format_count;
1189 plane->possible_crtcs = possible_crtcs;
1192 list_add_tail(&plane->head, &config->plane_list);
1193 config->num_total_plane++;
1194 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1195 config->num_overlay_plane++;
1197 drm_object_attach_property(&plane->base,
1198 config->plane_type_property,
1201 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
1202 drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
1203 drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
1204 drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
1205 drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
1206 drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
1207 drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
1208 drm_object_attach_property(&plane->base, config->prop_src_x, 0);
1209 drm_object_attach_property(&plane->base, config->prop_src_y, 0);
1210 drm_object_attach_property(&plane->base, config->prop_src_w, 0);
1211 drm_object_attach_property(&plane->base, config->prop_src_h, 0);
1216 EXPORT_SYMBOL(drm_universal_plane_init);
1219 * drm_plane_init - Initialize a legacy plane
1221 * @plane: plane object to init
1222 * @possible_crtcs: bitmask of possible CRTCs
1223 * @funcs: callbacks for the new plane
1224 * @formats: array of supported formats (%DRM_FORMAT_*)
1225 * @format_count: number of elements in @formats
1226 * @is_primary: plane type (primary vs overlay)
1228 * Legacy API to initialize a DRM plane.
1230 * New drivers should call drm_universal_plane_init() instead.
1233 * Zero on success, error code on failure.
1235 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1236 unsigned long possible_crtcs,
1237 const struct drm_plane_funcs *funcs,
1238 const uint32_t *formats, unsigned int format_count,
1241 enum drm_plane_type type;
1243 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1244 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1245 formats, format_count, type);
1247 EXPORT_SYMBOL(drm_plane_init);
1250 * drm_plane_cleanup - Clean up the core plane usage
1251 * @plane: plane to cleanup
1253 * This function cleans up @plane and removes it from the DRM mode setting
1254 * core. Note that the function does *not* free the plane structure itself,
1255 * this is the responsibility of the caller.
1257 void drm_plane_cleanup(struct drm_plane *plane)
1259 struct drm_device *dev = plane->dev;
1261 drm_modeset_lock_all(dev);
1262 kfree(plane->format_types);
1263 drm_mode_object_put(dev, &plane->base);
1265 BUG_ON(list_empty(&plane->head));
1267 list_del(&plane->head);
1268 dev->mode_config.num_total_plane--;
1269 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1270 dev->mode_config.num_overlay_plane--;
1271 drm_modeset_unlock_all(dev);
1273 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1274 if (plane->state && plane->funcs->atomic_destroy_state)
1275 plane->funcs->atomic_destroy_state(plane, plane->state);
1277 memset(plane, 0, sizeof(*plane));
1279 EXPORT_SYMBOL(drm_plane_cleanup);
1282 * drm_plane_index - find the index of a registered plane
1283 * @plane: plane to find index for
1285 * Given a registered plane, return the index of that CRTC within a DRM
1286 * device's list of planes.
1288 unsigned int drm_plane_index(struct drm_plane *plane)
1290 unsigned int index = 0;
1291 struct drm_plane *tmp;
1293 drm_for_each_plane(tmp, plane->dev) {
1302 EXPORT_SYMBOL(drm_plane_index);
1305 * drm_plane_from_index - find the registered plane at an index
1307 * @idx: index of registered plane to find for
1309 * Given a plane index, return the registered plane from DRM device's
1310 * list of planes with matching index.
1313 drm_plane_from_index(struct drm_device *dev, int idx)
1315 struct drm_plane *plane;
1318 drm_for_each_plane(plane, dev) {
1325 EXPORT_SYMBOL(drm_plane_from_index);
1328 * drm_plane_force_disable - Forcibly disable a plane
1329 * @plane: plane to disable
1331 * Forces the plane to be disabled.
1333 * Used when the plane's current framebuffer is destroyed,
1334 * and when restoring fbdev mode.
1336 void drm_plane_force_disable(struct drm_plane *plane)
1343 plane->old_fb = plane->fb;
1344 ret = plane->funcs->disable_plane(plane);
1346 DRM_ERROR("failed to disable plane with busy fb\n");
1347 plane->old_fb = NULL;
1350 /* disconnect the plane from the fb and crtc: */
1351 drm_framebuffer_unreference(plane->old_fb);
1352 plane->old_fb = NULL;
1356 EXPORT_SYMBOL(drm_plane_force_disable);
1358 static int drm_mode_create_standard_properties(struct drm_device *dev)
1360 struct drm_property *prop;
1363 * Standard properties (apply to all connectors)
1365 prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1366 DRM_MODE_PROP_IMMUTABLE,
1370 dev->mode_config.edid_property = prop;
1372 prop = drm_property_create_enum(dev, 0,
1373 "DPMS", drm_dpms_enum_list,
1374 ARRAY_SIZE(drm_dpms_enum_list));
1377 dev->mode_config.dpms_property = prop;
1379 prop = drm_property_create(dev,
1380 DRM_MODE_PROP_BLOB |
1381 DRM_MODE_PROP_IMMUTABLE,
1385 dev->mode_config.path_property = prop;
1387 prop = drm_property_create(dev,
1388 DRM_MODE_PROP_BLOB |
1389 DRM_MODE_PROP_IMMUTABLE,
1393 dev->mode_config.tile_property = prop;
1395 prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1396 "type", drm_plane_type_enum_list,
1397 ARRAY_SIZE(drm_plane_type_enum_list));
1400 dev->mode_config.plane_type_property = prop;
1402 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1403 "SRC_X", 0, UINT_MAX);
1406 dev->mode_config.prop_src_x = prop;
1408 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1409 "SRC_Y", 0, UINT_MAX);
1412 dev->mode_config.prop_src_y = prop;
1414 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1415 "SRC_W", 0, UINT_MAX);
1418 dev->mode_config.prop_src_w = prop;
1420 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1421 "SRC_H", 0, UINT_MAX);
1424 dev->mode_config.prop_src_h = prop;
1426 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1427 "CRTC_X", INT_MIN, INT_MAX);
1430 dev->mode_config.prop_crtc_x = prop;
1432 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1433 "CRTC_Y", INT_MIN, INT_MAX);
1436 dev->mode_config.prop_crtc_y = prop;
1438 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1439 "CRTC_W", 0, INT_MAX);
1442 dev->mode_config.prop_crtc_w = prop;
1444 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1445 "CRTC_H", 0, INT_MAX);
1448 dev->mode_config.prop_crtc_h = prop;
1450 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1451 "FB_ID", DRM_MODE_OBJECT_FB);
1454 dev->mode_config.prop_fb_id = prop;
1456 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1457 "CRTC_ID", DRM_MODE_OBJECT_CRTC);
1460 dev->mode_config.prop_crtc_id = prop;
1462 prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
1466 dev->mode_config.prop_active = prop;
1468 prop = drm_property_create(dev,
1469 DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB,
1473 dev->mode_config.prop_mode_id = prop;
1479 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1482 * Called by a driver the first time a DVI-I connector is made.
1484 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1486 struct drm_property *dvi_i_selector;
1487 struct drm_property *dvi_i_subconnector;
1489 if (dev->mode_config.dvi_i_select_subconnector_property)
1493 drm_property_create_enum(dev, 0,
1494 "select subconnector",
1495 drm_dvi_i_select_enum_list,
1496 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1497 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1499 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1501 drm_dvi_i_subconnector_enum_list,
1502 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1503 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1507 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1510 * drm_create_tv_properties - create TV specific connector properties
1512 * @num_modes: number of different TV formats (modes) supported
1513 * @modes: array of pointers to strings containing name of each format
1515 * Called by a driver's TV initialization routine, this function creates
1516 * the TV specific connector properties for a given device. Caller is
1517 * responsible for allocating a list of format names and passing them to
1520 int drm_mode_create_tv_properties(struct drm_device *dev,
1521 unsigned int num_modes,
1522 const char * const modes[])
1524 struct drm_property *tv_selector;
1525 struct drm_property *tv_subconnector;
1528 if (dev->mode_config.tv_select_subconnector_property)
1532 * Basic connector properties
1534 tv_selector = drm_property_create_enum(dev, 0,
1535 "select subconnector",
1536 drm_tv_select_enum_list,
1537 ARRAY_SIZE(drm_tv_select_enum_list));
1541 dev->mode_config.tv_select_subconnector_property = tv_selector;
1544 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1546 drm_tv_subconnector_enum_list,
1547 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1548 if (!tv_subconnector)
1550 dev->mode_config.tv_subconnector_property = tv_subconnector;
1553 * Other, TV specific properties: margins & TV modes.
1555 dev->mode_config.tv_left_margin_property =
1556 drm_property_create_range(dev, 0, "left margin", 0, 100);
1557 if (!dev->mode_config.tv_left_margin_property)
1560 dev->mode_config.tv_right_margin_property =
1561 drm_property_create_range(dev, 0, "right margin", 0, 100);
1562 if (!dev->mode_config.tv_right_margin_property)
1565 dev->mode_config.tv_top_margin_property =
1566 drm_property_create_range(dev, 0, "top margin", 0, 100);
1567 if (!dev->mode_config.tv_top_margin_property)
1570 dev->mode_config.tv_bottom_margin_property =
1571 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1572 if (!dev->mode_config.tv_bottom_margin_property)
1575 dev->mode_config.tv_mode_property =
1576 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1578 if (!dev->mode_config.tv_mode_property)
1581 for (i = 0; i < num_modes; i++)
1582 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1585 dev->mode_config.tv_brightness_property =
1586 drm_property_create_range(dev, 0, "brightness", 0, 100);
1587 if (!dev->mode_config.tv_brightness_property)
1590 dev->mode_config.tv_contrast_property =
1591 drm_property_create_range(dev, 0, "contrast", 0, 100);
1592 if (!dev->mode_config.tv_contrast_property)
1595 dev->mode_config.tv_flicker_reduction_property =
1596 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1597 if (!dev->mode_config.tv_flicker_reduction_property)
1600 dev->mode_config.tv_overscan_property =
1601 drm_property_create_range(dev, 0, "overscan", 0, 100);
1602 if (!dev->mode_config.tv_overscan_property)
1605 dev->mode_config.tv_saturation_property =
1606 drm_property_create_range(dev, 0, "saturation", 0, 100);
1607 if (!dev->mode_config.tv_saturation_property)
1610 dev->mode_config.tv_hue_property =
1611 drm_property_create_range(dev, 0, "hue", 0, 100);
1612 if (!dev->mode_config.tv_hue_property)
1619 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1622 * drm_mode_create_scaling_mode_property - create scaling mode property
1625 * Called by a driver the first time it's needed, must be attached to desired
1628 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1630 struct drm_property *scaling_mode;
1632 if (dev->mode_config.scaling_mode_property)
1636 drm_property_create_enum(dev, 0, "scaling mode",
1637 drm_scaling_mode_enum_list,
1638 ARRAY_SIZE(drm_scaling_mode_enum_list));
1640 dev->mode_config.scaling_mode_property = scaling_mode;
1644 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1647 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1650 * Called by a driver the first time it's needed, must be attached to desired
1654 * Zero on success, negative errno on failure.
1656 int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1658 if (dev->mode_config.aspect_ratio_property)
1661 dev->mode_config.aspect_ratio_property =
1662 drm_property_create_enum(dev, 0, "aspect ratio",
1663 drm_aspect_ratio_enum_list,
1664 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1666 if (dev->mode_config.aspect_ratio_property == NULL)
1671 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1674 * drm_mode_create_dirty_property - create dirty property
1677 * Called by a driver the first time it's needed, must be attached to desired
1680 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1682 struct drm_property *dirty_info;
1684 if (dev->mode_config.dirty_info_property)
1688 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1690 drm_dirty_info_enum_list,
1691 ARRAY_SIZE(drm_dirty_info_enum_list));
1692 dev->mode_config.dirty_info_property = dirty_info;
1696 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1699 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1702 * Create the the suggested x/y offset property for connectors.
1704 int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1706 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1709 dev->mode_config.suggested_x_property =
1710 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1712 dev->mode_config.suggested_y_property =
1713 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1715 if (dev->mode_config.suggested_x_property == NULL ||
1716 dev->mode_config.suggested_y_property == NULL)
1720 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1723 * drm_mode_getresources - get graphics configuration
1724 * @dev: drm device for the ioctl
1725 * @data: data pointer for the ioctl
1726 * @file_priv: drm file for the ioctl call
1728 * Construct a set of configuration description structures and return
1729 * them to the user, including CRTC, connector and framebuffer configuration.
1731 * Called by the user via ioctl.
1734 * Zero on success, negative errno on failure.
1736 int drm_mode_getresources(struct drm_device *dev, void *data,
1737 struct drm_file *file_priv)
1739 struct drm_mode_card_res *card_res = data;
1740 struct list_head *lh;
1741 struct drm_framebuffer *fb;
1742 struct drm_connector *connector;
1743 struct drm_crtc *crtc;
1744 struct drm_encoder *encoder;
1746 int connector_count = 0;
1749 int encoder_count = 0;
1751 uint32_t __user *fb_id;
1752 uint32_t __user *crtc_id;
1753 uint32_t __user *connector_id;
1754 uint32_t __user *encoder_id;
1756 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1760 mutex_lock(&file_priv->fbs_lock);
1762 * For the non-control nodes we need to limit the list of resources
1763 * by IDs in the group list for this node
1765 list_for_each(lh, &file_priv->fbs)
1768 /* handle this in 4 parts */
1770 if (card_res->count_fbs >= fb_count) {
1772 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1773 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1774 if (put_user(fb->base.id, fb_id + copied)) {
1775 mutex_unlock(&file_priv->fbs_lock);
1781 card_res->count_fbs = fb_count;
1782 mutex_unlock(&file_priv->fbs_lock);
1784 /* mode_config.mutex protects the connector list against e.g. DP MST
1785 * connector hot-adding. CRTC/Plane lists are invariant. */
1786 mutex_lock(&dev->mode_config.mutex);
1787 drm_for_each_crtc(crtc, dev)
1790 drm_for_each_connector(connector, dev)
1793 drm_for_each_encoder(encoder, dev)
1796 card_res->max_height = dev->mode_config.max_height;
1797 card_res->min_height = dev->mode_config.min_height;
1798 card_res->max_width = dev->mode_config.max_width;
1799 card_res->min_width = dev->mode_config.min_width;
1802 if (card_res->count_crtcs >= crtc_count) {
1804 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1805 drm_for_each_crtc(crtc, dev) {
1806 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1807 if (put_user(crtc->base.id, crtc_id + copied)) {
1814 card_res->count_crtcs = crtc_count;
1817 if (card_res->count_encoders >= encoder_count) {
1819 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1820 drm_for_each_encoder(encoder, dev) {
1821 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1823 if (put_user(encoder->base.id, encoder_id +
1831 card_res->count_encoders = encoder_count;
1834 if (card_res->count_connectors >= connector_count) {
1836 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1837 drm_for_each_connector(connector, dev) {
1838 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1841 if (put_user(connector->base.id,
1842 connector_id + copied)) {
1849 card_res->count_connectors = connector_count;
1851 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1852 card_res->count_connectors, card_res->count_encoders);
1855 mutex_unlock(&dev->mode_config.mutex);
1860 * drm_mode_getcrtc - get CRTC configuration
1861 * @dev: drm device for the ioctl
1862 * @data: data pointer for the ioctl
1863 * @file_priv: drm file for the ioctl call
1865 * Construct a CRTC configuration structure to return to the user.
1867 * Called by the user via ioctl.
1870 * Zero on success, negative errno on failure.
1872 int drm_mode_getcrtc(struct drm_device *dev,
1873 void *data, struct drm_file *file_priv)
1875 struct drm_mode_crtc *crtc_resp = data;
1876 struct drm_crtc *crtc;
1878 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1881 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
1885 drm_modeset_lock_crtc(crtc, crtc->primary);
1886 crtc_resp->gamma_size = crtc->gamma_size;
1887 if (crtc->primary->fb)
1888 crtc_resp->fb_id = crtc->primary->fb->base.id;
1890 crtc_resp->fb_id = 0;
1893 crtc_resp->x = crtc->primary->state->src_x >> 16;
1894 crtc_resp->y = crtc->primary->state->src_y >> 16;
1895 if (crtc->state->enable) {
1896 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode);
1897 crtc_resp->mode_valid = 1;
1900 crtc_resp->mode_valid = 0;
1903 crtc_resp->x = crtc->x;
1904 crtc_resp->y = crtc->y;
1905 if (crtc->enabled) {
1906 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1907 crtc_resp->mode_valid = 1;
1910 crtc_resp->mode_valid = 0;
1913 drm_modeset_unlock_crtc(crtc);
1918 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1919 const struct drm_file *file_priv)
1922 * If user-space hasn't configured the driver to expose the stereo 3D
1923 * modes, don't expose them.
1925 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1931 static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
1933 /* For atomic drivers only state objects are synchronously updated and
1934 * protected by modeset locks, so check those first. */
1935 if (connector->state)
1936 return connector->state->best_encoder;
1937 return connector->encoder;
1940 /* helper for getconnector and getproperties ioctls */
1941 static int get_properties(struct drm_mode_object *obj, bool atomic,
1942 uint32_t __user *prop_ptr, uint64_t __user *prop_values,
1943 uint32_t *arg_count_props)
1948 props_count = obj->properties->count;
1950 props_count -= obj->properties->atomic_count;
1952 if ((*arg_count_props >= props_count) && props_count) {
1953 for (i = 0, copied = 0; copied < props_count; i++) {
1954 struct drm_property *prop = obj->properties->properties[i];
1957 if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
1960 ret = drm_object_property_get_value(obj, prop, &val);
1964 if (put_user(prop->base.id, prop_ptr + copied))
1967 if (put_user(val, prop_values + copied))
1973 *arg_count_props = props_count;
1979 * drm_mode_getconnector - get connector configuration
1980 * @dev: drm device for the ioctl
1981 * @data: data pointer for the ioctl
1982 * @file_priv: drm file for the ioctl call
1984 * Construct a connector configuration structure to return to the user.
1986 * Called by the user via ioctl.
1989 * Zero on success, negative errno on failure.
1991 int drm_mode_getconnector(struct drm_device *dev, void *data,
1992 struct drm_file *file_priv)
1994 struct drm_mode_get_connector *out_resp = data;
1995 struct drm_connector *connector;
1996 struct drm_encoder *encoder;
1997 struct drm_display_mode *mode;
1999 int encoders_count = 0;
2003 struct drm_mode_modeinfo u_mode;
2004 struct drm_mode_modeinfo __user *mode_ptr;
2005 uint32_t __user *encoder_ptr;
2007 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2010 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
2012 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
2014 mutex_lock(&dev->mode_config.mutex);
2016 connector = drm_connector_find(dev, out_resp->connector_id);
2022 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
2023 if (connector->encoder_ids[i] != 0)
2026 if (out_resp->count_modes == 0) {
2027 connector->funcs->fill_modes(connector,
2028 dev->mode_config.max_width,
2029 dev->mode_config.max_height);
2032 /* delayed so we get modes regardless of pre-fill_modes state */
2033 list_for_each_entry(mode, &connector->modes, head)
2034 if (drm_mode_expose_to_userspace(mode, file_priv))
2037 out_resp->connector_id = connector->base.id;
2038 out_resp->connector_type = connector->connector_type;
2039 out_resp->connector_type_id = connector->connector_type_id;
2040 out_resp->mm_width = connector->display_info.width_mm;
2041 out_resp->mm_height = connector->display_info.height_mm;
2042 out_resp->subpixel = connector->display_info.subpixel_order;
2043 out_resp->connection = connector->status;
2045 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2046 encoder = drm_connector_get_encoder(connector);
2048 out_resp->encoder_id = encoder->base.id;
2050 out_resp->encoder_id = 0;
2053 * This ioctl is called twice, once to determine how much space is
2054 * needed, and the 2nd time to fill it.
2056 if ((out_resp->count_modes >= mode_count) && mode_count) {
2058 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
2059 list_for_each_entry(mode, &connector->modes, head) {
2060 if (!drm_mode_expose_to_userspace(mode, file_priv))
2063 drm_mode_convert_to_umode(&u_mode, mode);
2064 if (copy_to_user(mode_ptr + copied,
2065 &u_mode, sizeof(u_mode))) {
2072 out_resp->count_modes = mode_count;
2074 ret = get_properties(&connector->base, file_priv->atomic,
2075 (uint32_t __user *)(unsigned long)(out_resp->props_ptr),
2076 (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr),
2077 &out_resp->count_props);
2081 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2083 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
2084 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2085 if (connector->encoder_ids[i] != 0) {
2086 if (put_user(connector->encoder_ids[i],
2087 encoder_ptr + copied)) {
2095 out_resp->count_encoders = encoders_count;
2098 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2101 mutex_unlock(&dev->mode_config.mutex);
2106 static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2108 struct drm_connector *connector;
2109 struct drm_device *dev = encoder->dev;
2110 bool uses_atomic = false;
2112 /* For atomic drivers only state objects are synchronously updated and
2113 * protected by modeset locks, so check those first. */
2114 drm_for_each_connector(connector, dev) {
2115 if (!connector->state)
2120 if (connector->state->best_encoder != encoder)
2123 return connector->state->crtc;
2126 /* Don't return stale data (e.g. pending async disable). */
2130 return encoder->crtc;
2134 * drm_mode_getencoder - get encoder configuration
2135 * @dev: drm device for the ioctl
2136 * @data: data pointer for the ioctl
2137 * @file_priv: drm file for the ioctl call
2139 * Construct a encoder configuration structure to return to the user.
2141 * Called by the user via ioctl.
2144 * Zero on success, negative errno on failure.
2146 int drm_mode_getencoder(struct drm_device *dev, void *data,
2147 struct drm_file *file_priv)
2149 struct drm_mode_get_encoder *enc_resp = data;
2150 struct drm_encoder *encoder;
2151 struct drm_crtc *crtc;
2153 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2156 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
2160 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2161 crtc = drm_encoder_get_crtc(encoder);
2163 enc_resp->crtc_id = crtc->base.id;
2165 enc_resp->crtc_id = 0;
2166 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2168 enc_resp->encoder_type = encoder->encoder_type;
2169 enc_resp->encoder_id = encoder->base.id;
2170 enc_resp->possible_crtcs = encoder->possible_crtcs;
2171 enc_resp->possible_clones = encoder->possible_clones;
2177 * drm_mode_getplane_res - enumerate all plane resources
2180 * @file_priv: DRM file info
2182 * Construct a list of plane ids to return to the user.
2184 * Called by the user via ioctl.
2187 * Zero on success, negative errno on failure.
2189 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2190 struct drm_file *file_priv)
2192 struct drm_mode_get_plane_res *plane_resp = data;
2193 struct drm_mode_config *config;
2194 struct drm_plane *plane;
2195 uint32_t __user *plane_ptr;
2197 unsigned num_planes;
2199 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2202 config = &dev->mode_config;
2204 if (file_priv->universal_planes)
2205 num_planes = config->num_total_plane;
2207 num_planes = config->num_overlay_plane;
2210 * This ioctl is called twice, once to determine how much space is
2211 * needed, and the 2nd time to fill it.
2214 (plane_resp->count_planes >= num_planes)) {
2215 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2217 /* Plane lists are invariant, no locking needed. */
2218 drm_for_each_plane(plane, dev) {
2220 * Unless userspace set the 'universal planes'
2221 * capability bit, only advertise overlays.
2223 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2224 !file_priv->universal_planes)
2227 if (put_user(plane->base.id, plane_ptr + copied))
2232 plane_resp->count_planes = num_planes;
2238 * drm_mode_getplane - get plane configuration
2241 * @file_priv: DRM file info
2243 * Construct a plane configuration structure to return to the user.
2245 * Called by the user via ioctl.
2248 * Zero on success, negative errno on failure.
2250 int drm_mode_getplane(struct drm_device *dev, void *data,
2251 struct drm_file *file_priv)
2253 struct drm_mode_get_plane *plane_resp = data;
2254 struct drm_plane *plane;
2255 uint32_t __user *format_ptr;
2257 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2260 plane = drm_plane_find(dev, plane_resp->plane_id);
2264 drm_modeset_lock(&plane->mutex, NULL);
2266 plane_resp->crtc_id = plane->crtc->base.id;
2268 plane_resp->crtc_id = 0;
2271 plane_resp->fb_id = plane->fb->base.id;
2273 plane_resp->fb_id = 0;
2274 drm_modeset_unlock(&plane->mutex);
2276 plane_resp->plane_id = plane->base.id;
2277 plane_resp->possible_crtcs = plane->possible_crtcs;
2278 plane_resp->gamma_size = 0;
2281 * This ioctl is called twice, once to determine how much space is
2282 * needed, and the 2nd time to fill it.
2284 if (plane->format_count &&
2285 (plane_resp->count_format_types >= plane->format_count)) {
2286 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2287 if (copy_to_user(format_ptr,
2288 plane->format_types,
2289 sizeof(uint32_t) * plane->format_count)) {
2293 plane_resp->count_format_types = plane->format_count;
2299 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2300 * @plane: plane to check for format support
2301 * @format: the pixel format
2304 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2307 int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format)
2311 for (i = 0; i < plane->format_count; i++) {
2312 if (format == plane->format_types[i])
2319 static int check_src_coords(uint32_t src_x, uint32_t src_y,
2320 uint32_t src_w, uint32_t src_h,
2321 const struct drm_framebuffer *fb)
2323 unsigned int fb_width, fb_height;
2325 fb_width = fb->width << 16;
2326 fb_height = fb->height << 16;
2328 /* Make sure source coordinates are inside the fb. */
2329 if (src_w > fb_width ||
2330 src_x > fb_width - src_w ||
2331 src_h > fb_height ||
2332 src_y > fb_height - src_h) {
2333 DRM_DEBUG_KMS("Invalid source coordinates "
2334 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2335 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2336 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2337 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2338 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2346 * setplane_internal - setplane handler for internal callers
2348 * Note that we assume an extra reference has already been taken on fb. If the
2349 * update fails, this reference will be dropped before return; if it succeeds,
2350 * the previous framebuffer (if any) will be unreferenced instead.
2352 * src_{x,y,w,h} are provided in 16.16 fixed point format
2354 static int __setplane_internal(struct drm_plane *plane,
2355 struct drm_crtc *crtc,
2356 struct drm_framebuffer *fb,
2357 int32_t crtc_x, int32_t crtc_y,
2358 uint32_t crtc_w, uint32_t crtc_h,
2359 /* src_{x,y,w,h} values are 16.16 fixed point */
2360 uint32_t src_x, uint32_t src_y,
2361 uint32_t src_w, uint32_t src_h)
2365 /* No fb means shut it down */
2367 plane->old_fb = plane->fb;
2368 ret = plane->funcs->disable_plane(plane);
2373 plane->old_fb = NULL;
2378 /* Check whether this plane is usable on this CRTC */
2379 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2380 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2385 /* Check whether this plane supports the fb pixel format. */
2386 ret = drm_plane_check_pixel_format(plane, fb->pixel_format);
2388 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2389 drm_get_format_name(fb->pixel_format));
2393 /* Give drivers some help against integer overflows */
2394 if (crtc_w > INT_MAX ||
2395 crtc_x > INT_MAX - (int32_t) crtc_w ||
2397 crtc_y > INT_MAX - (int32_t) crtc_h) {
2398 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2399 crtc_w, crtc_h, crtc_x, crtc_y);
2404 ret = check_src_coords(src_x, src_y, src_w, src_h, fb);
2408 plane->old_fb = plane->fb;
2409 ret = plane->funcs->update_plane(plane, crtc, fb,
2410 crtc_x, crtc_y, crtc_w, crtc_h,
2411 src_x, src_y, src_w, src_h);
2417 plane->old_fb = NULL;
2422 drm_framebuffer_unreference(fb);
2424 drm_framebuffer_unreference(plane->old_fb);
2425 plane->old_fb = NULL;
2430 static int setplane_internal(struct drm_plane *plane,
2431 struct drm_crtc *crtc,
2432 struct drm_framebuffer *fb,
2433 int32_t crtc_x, int32_t crtc_y,
2434 uint32_t crtc_w, uint32_t crtc_h,
2435 /* src_{x,y,w,h} values are 16.16 fixed point */
2436 uint32_t src_x, uint32_t src_y,
2437 uint32_t src_w, uint32_t src_h)
2441 drm_modeset_lock_all(plane->dev);
2442 ret = __setplane_internal(plane, crtc, fb,
2443 crtc_x, crtc_y, crtc_w, crtc_h,
2444 src_x, src_y, src_w, src_h);
2445 drm_modeset_unlock_all(plane->dev);
2451 * drm_mode_setplane - configure a plane's configuration
2453 * @data: ioctl data*
2454 * @file_priv: DRM file info
2456 * Set plane configuration, including placement, fb, scaling, and other factors.
2457 * Or pass a NULL fb to disable (planes may be disabled without providing a
2461 * Zero on success, negative errno on failure.
2463 int drm_mode_setplane(struct drm_device *dev, void *data,
2464 struct drm_file *file_priv)
2466 struct drm_mode_set_plane *plane_req = data;
2467 struct drm_plane *plane;
2468 struct drm_crtc *crtc = NULL;
2469 struct drm_framebuffer *fb = NULL;
2471 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2475 * First, find the plane, crtc, and fb objects. If not available,
2476 * we don't bother to call the driver.
2478 plane = drm_plane_find(dev, plane_req->plane_id);
2480 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2481 plane_req->plane_id);
2485 if (plane_req->fb_id) {
2486 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2488 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2493 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2495 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2496 plane_req->crtc_id);
2502 * setplane_internal will take care of deref'ing either the old or new
2503 * framebuffer depending on success.
2505 return setplane_internal(plane, crtc, fb,
2506 plane_req->crtc_x, plane_req->crtc_y,
2507 plane_req->crtc_w, plane_req->crtc_h,
2508 plane_req->src_x, plane_req->src_y,
2509 plane_req->src_w, plane_req->src_h);
2513 * drm_mode_set_config_internal - helper to call ->set_config
2514 * @set: modeset config to set
2516 * This is a little helper to wrap internal calls to the ->set_config driver
2517 * interface. The only thing it adds is correct refcounting dance.
2520 * Zero on success, negative errno on failure.
2522 int drm_mode_set_config_internal(struct drm_mode_set *set)
2524 struct drm_crtc *crtc = set->crtc;
2525 struct drm_framebuffer *fb;
2526 struct drm_crtc *tmp;
2530 * NOTE: ->set_config can also disable other crtcs (if we steal all
2531 * connectors from it), hence we need to refcount the fbs across all
2532 * crtcs. Atomic modeset will have saner semantics ...
2534 drm_for_each_crtc(tmp, crtc->dev)
2535 tmp->primary->old_fb = tmp->primary->fb;
2539 ret = crtc->funcs->set_config(set);
2541 crtc->primary->crtc = crtc;
2542 crtc->primary->fb = fb;
2545 drm_for_each_crtc(tmp, crtc->dev) {
2546 if (tmp->primary->fb)
2547 drm_framebuffer_reference(tmp->primary->fb);
2548 if (tmp->primary->old_fb)
2549 drm_framebuffer_unreference(tmp->primary->old_fb);
2550 tmp->primary->old_fb = NULL;
2555 EXPORT_SYMBOL(drm_mode_set_config_internal);
2558 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2559 * @mode: mode to query
2560 * @hdisplay: hdisplay value to fill in
2561 * @vdisplay: vdisplay value to fill in
2563 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2564 * the appropriate layout.
2566 void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
2567 int *hdisplay, int *vdisplay)
2569 struct drm_display_mode adjusted;
2571 drm_mode_copy(&adjusted, mode);
2572 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
2573 *hdisplay = adjusted.crtc_hdisplay;
2574 *vdisplay = adjusted.crtc_vdisplay;
2576 EXPORT_SYMBOL(drm_crtc_get_hv_timing);
2579 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2581 * @crtc: CRTC that framebuffer will be displayed on
2584 * @mode: mode that framebuffer will be displayed under
2585 * @fb: framebuffer to check size of
2587 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2589 const struct drm_display_mode *mode,
2590 const struct drm_framebuffer *fb)
2593 int hdisplay, vdisplay;
2595 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
2598 crtc->primary->state->rotation & (BIT(DRM_ROTATE_90) |
2599 BIT(DRM_ROTATE_270)))
2600 swap(hdisplay, vdisplay);
2602 return check_src_coords(x << 16, y << 16,
2603 hdisplay << 16, vdisplay << 16, fb);
2605 EXPORT_SYMBOL(drm_crtc_check_viewport);
2608 * drm_mode_setcrtc - set CRTC configuration
2609 * @dev: drm device for the ioctl
2610 * @data: data pointer for the ioctl
2611 * @file_priv: drm file for the ioctl call
2613 * Build a new CRTC configuration based on user request.
2615 * Called by the user via ioctl.
2618 * Zero on success, negative errno on failure.
2620 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2621 struct drm_file *file_priv)
2623 struct drm_mode_config *config = &dev->mode_config;
2624 struct drm_mode_crtc *crtc_req = data;
2625 struct drm_crtc *crtc;
2626 struct drm_connector **connector_set = NULL, *connector;
2627 struct drm_framebuffer *fb = NULL;
2628 struct drm_display_mode *mode = NULL;
2629 struct drm_mode_set set;
2630 uint32_t __user *set_connectors_ptr;
2634 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2638 * Universal plane src offsets are only 16.16, prevent havoc for
2639 * drivers using universal plane code internally.
2641 if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000)
2644 drm_modeset_lock_all(dev);
2645 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2647 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2651 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2653 if (crtc_req->mode_valid) {
2654 /* If we have a mode we need a framebuffer. */
2655 /* If we pass -1, set the mode with the currently bound fb */
2656 if (crtc_req->fb_id == -1) {
2657 if (!crtc->primary->fb) {
2658 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2662 fb = crtc->primary->fb;
2663 /* Make refcounting symmetric with the lookup path. */
2664 drm_framebuffer_reference(fb);
2666 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2668 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2675 mode = drm_mode_create(dev);
2681 ret = drm_mode_convert_umode(mode, &crtc_req->mode);
2683 DRM_DEBUG_KMS("Invalid mode\n");
2687 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2690 * Check whether the primary plane supports the fb pixel format.
2691 * Drivers not implementing the universal planes API use a
2692 * default formats list provided by the DRM core which doesn't
2693 * match real hardware capabilities. Skip the check in that
2696 if (!crtc->primary->format_default) {
2697 ret = drm_plane_check_pixel_format(crtc->primary,
2700 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2701 drm_get_format_name(fb->pixel_format));
2706 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2713 if (crtc_req->count_connectors == 0 && mode) {
2714 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2719 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2720 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2721 crtc_req->count_connectors);
2726 if (crtc_req->count_connectors > 0) {
2729 /* Avoid unbounded kernel memory allocation */
2730 if (crtc_req->count_connectors > config->num_connector) {
2735 connector_set = kmalloc_array(crtc_req->count_connectors,
2736 sizeof(struct drm_connector *),
2738 if (!connector_set) {
2743 for (i = 0; i < crtc_req->count_connectors; i++) {
2744 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2745 if (get_user(out_id, &set_connectors_ptr[i])) {
2750 connector = drm_connector_find(dev, out_id);
2752 DRM_DEBUG_KMS("Connector id %d unknown\n",
2757 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2761 connector_set[i] = connector;
2766 set.x = crtc_req->x;
2767 set.y = crtc_req->y;
2769 set.connectors = connector_set;
2770 set.num_connectors = crtc_req->count_connectors;
2772 ret = drm_mode_set_config_internal(&set);
2776 drm_framebuffer_unreference(fb);
2778 kfree(connector_set);
2779 drm_mode_destroy(dev, mode);
2780 drm_modeset_unlock_all(dev);
2785 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2786 * universal plane handler call
2787 * @crtc: crtc to update cursor for
2788 * @req: data pointer for the ioctl
2789 * @file_priv: drm file for the ioctl call
2791 * Legacy cursor ioctl's work directly with driver buffer handles. To
2792 * translate legacy ioctl calls into universal plane handler calls, we need to
2793 * wrap the native buffer handle in a drm_framebuffer.
2795 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2796 * buffer with a pitch of 4*width; the universal plane interface should be used
2797 * directly in cases where the hardware can support other buffer settings and
2798 * userspace wants to make use of these capabilities.
2801 * Zero on success, negative errno on failure.
2803 static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2804 struct drm_mode_cursor2 *req,
2805 struct drm_file *file_priv)
2807 struct drm_device *dev = crtc->dev;
2808 struct drm_framebuffer *fb = NULL;
2809 struct drm_mode_fb_cmd2 fbreq = {
2810 .width = req->width,
2811 .height = req->height,
2812 .pixel_format = DRM_FORMAT_ARGB8888,
2813 .pitches = { req->width * 4 },
2814 .handles = { req->handle },
2816 int32_t crtc_x, crtc_y;
2817 uint32_t crtc_w = 0, crtc_h = 0;
2818 uint32_t src_w = 0, src_h = 0;
2821 BUG_ON(!crtc->cursor);
2822 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
2825 * Obtain fb we'll be using (either new or existing) and take an extra
2826 * reference to it if fb != null. setplane will take care of dropping
2827 * the reference if the plane update fails.
2829 if (req->flags & DRM_MODE_CURSOR_BO) {
2831 fb = internal_framebuffer_create(dev, &fbreq, file_priv);
2833 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2840 fb = crtc->cursor->fb;
2842 drm_framebuffer_reference(fb);
2845 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2849 crtc_x = crtc->cursor_x;
2850 crtc_y = crtc->cursor_y;
2855 crtc_h = fb->height;
2856 src_w = fb->width << 16;
2857 src_h = fb->height << 16;
2861 * setplane_internal will take care of deref'ing either the old or new
2862 * framebuffer depending on success.
2864 ret = __setplane_internal(crtc->cursor, crtc, fb,
2865 crtc_x, crtc_y, crtc_w, crtc_h,
2866 0, 0, src_w, src_h);
2868 /* Update successful; save new cursor position, if necessary */
2869 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2870 crtc->cursor_x = req->x;
2871 crtc->cursor_y = req->y;
2877 static int drm_mode_cursor_common(struct drm_device *dev,
2878 struct drm_mode_cursor2 *req,
2879 struct drm_file *file_priv)
2881 struct drm_crtc *crtc;
2884 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2887 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2890 crtc = drm_crtc_find(dev, req->crtc_id);
2892 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2897 * If this crtc has a universal cursor plane, call that plane's update
2898 * handler rather than using legacy cursor handlers.
2900 drm_modeset_lock_crtc(crtc, crtc->cursor);
2902 ret = drm_mode_cursor_universal(crtc, req, file_priv);
2906 if (req->flags & DRM_MODE_CURSOR_BO) {
2907 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
2911 /* Turns off the cursor if handle is 0 */
2912 if (crtc->funcs->cursor_set2)
2913 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2914 req->width, req->height, req->hot_x, req->hot_y);
2916 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2917 req->width, req->height);
2920 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2921 if (crtc->funcs->cursor_move) {
2922 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2929 drm_modeset_unlock_crtc(crtc);
2937 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2938 * @dev: drm device for the ioctl
2939 * @data: data pointer for the ioctl
2940 * @file_priv: drm file for the ioctl call
2942 * Set the cursor configuration based on user request.
2944 * Called by the user via ioctl.
2947 * Zero on success, negative errno on failure.
2949 int drm_mode_cursor_ioctl(struct drm_device *dev,
2950 void *data, struct drm_file *file_priv)
2952 struct drm_mode_cursor *req = data;
2953 struct drm_mode_cursor2 new_req;
2955 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2956 new_req.hot_x = new_req.hot_y = 0;
2958 return drm_mode_cursor_common(dev, &new_req, file_priv);
2962 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2963 * @dev: drm device for the ioctl
2964 * @data: data pointer for the ioctl
2965 * @file_priv: drm file for the ioctl call
2967 * Set the cursor configuration based on user request. This implements the 2nd
2968 * version of the cursor ioctl, which allows userspace to additionally specify
2969 * the hotspot of the pointer.
2971 * Called by the user via ioctl.
2974 * Zero on success, negative errno on failure.
2976 int drm_mode_cursor2_ioctl(struct drm_device *dev,
2977 void *data, struct drm_file *file_priv)
2979 struct drm_mode_cursor2 *req = data;
2981 return drm_mode_cursor_common(dev, req, file_priv);
2985 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2986 * @bpp: bits per pixels
2987 * @depth: bit depth per pixel
2989 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2990 * Useful in fbdev emulation code, since that deals in those values.
2992 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2998 fmt = DRM_FORMAT_C8;
3002 fmt = DRM_FORMAT_XRGB1555;
3004 fmt = DRM_FORMAT_RGB565;
3007 fmt = DRM_FORMAT_RGB888;
3011 fmt = DRM_FORMAT_XRGB8888;
3012 else if (depth == 30)
3013 fmt = DRM_FORMAT_XRGB2101010;
3015 fmt = DRM_FORMAT_ARGB8888;
3018 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3019 fmt = DRM_FORMAT_XRGB8888;
3025 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3028 * drm_mode_addfb - add an FB to the graphics configuration
3029 * @dev: drm device for the ioctl
3030 * @data: data pointer for the ioctl
3031 * @file_priv: drm file for the ioctl call
3033 * Add a new FB to the specified CRTC, given a user request. This is the
3034 * original addfb ioctl which only supported RGB formats.
3036 * Called by the user via ioctl.
3039 * Zero on success, negative errno on failure.
3041 int drm_mode_addfb(struct drm_device *dev,
3042 void *data, struct drm_file *file_priv)
3044 struct drm_mode_fb_cmd *or = data;
3045 struct drm_mode_fb_cmd2 r = {};
3048 /* convert to new format and call new ioctl */
3049 r.fb_id = or->fb_id;
3050 r.width = or->width;
3051 r.height = or->height;
3052 r.pitches[0] = or->pitch;
3053 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3054 r.handles[0] = or->handle;
3056 ret = drm_mode_addfb2(dev, &r, file_priv);
3060 or->fb_id = r.fb_id;
3065 static int format_check(const struct drm_mode_fb_cmd2 *r)
3067 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3071 case DRM_FORMAT_RGB332:
3072 case DRM_FORMAT_BGR233:
3073 case DRM_FORMAT_XRGB4444:
3074 case DRM_FORMAT_XBGR4444:
3075 case DRM_FORMAT_RGBX4444:
3076 case DRM_FORMAT_BGRX4444:
3077 case DRM_FORMAT_ARGB4444:
3078 case DRM_FORMAT_ABGR4444:
3079 case DRM_FORMAT_RGBA4444:
3080 case DRM_FORMAT_BGRA4444:
3081 case DRM_FORMAT_XRGB1555:
3082 case DRM_FORMAT_XBGR1555:
3083 case DRM_FORMAT_RGBX5551:
3084 case DRM_FORMAT_BGRX5551:
3085 case DRM_FORMAT_ARGB1555:
3086 case DRM_FORMAT_ABGR1555:
3087 case DRM_FORMAT_RGBA5551:
3088 case DRM_FORMAT_BGRA5551:
3089 case DRM_FORMAT_RGB565:
3090 case DRM_FORMAT_BGR565:
3091 case DRM_FORMAT_RGB888:
3092 case DRM_FORMAT_BGR888:
3093 case DRM_FORMAT_XRGB8888:
3094 case DRM_FORMAT_XBGR8888:
3095 case DRM_FORMAT_RGBX8888:
3096 case DRM_FORMAT_BGRX8888:
3097 case DRM_FORMAT_ARGB8888:
3098 case DRM_FORMAT_ABGR8888:
3099 case DRM_FORMAT_RGBA8888:
3100 case DRM_FORMAT_BGRA8888:
3101 case DRM_FORMAT_XRGB2101010:
3102 case DRM_FORMAT_XBGR2101010:
3103 case DRM_FORMAT_RGBX1010102:
3104 case DRM_FORMAT_BGRX1010102:
3105 case DRM_FORMAT_ARGB2101010:
3106 case DRM_FORMAT_ABGR2101010:
3107 case DRM_FORMAT_RGBA1010102:
3108 case DRM_FORMAT_BGRA1010102:
3109 case DRM_FORMAT_YUYV:
3110 case DRM_FORMAT_YVYU:
3111 case DRM_FORMAT_UYVY:
3112 case DRM_FORMAT_VYUY:
3113 case DRM_FORMAT_AYUV:
3114 case DRM_FORMAT_NV12:
3115 case DRM_FORMAT_NV21:
3116 case DRM_FORMAT_NV16:
3117 case DRM_FORMAT_NV61:
3118 case DRM_FORMAT_NV24:
3119 case DRM_FORMAT_NV42:
3120 case DRM_FORMAT_YUV410:
3121 case DRM_FORMAT_YVU410:
3122 case DRM_FORMAT_YUV411:
3123 case DRM_FORMAT_YVU411:
3124 case DRM_FORMAT_YUV420:
3125 case DRM_FORMAT_YVU420:
3126 case DRM_FORMAT_YUV422:
3127 case DRM_FORMAT_YVU422:
3128 case DRM_FORMAT_YUV444:
3129 case DRM_FORMAT_YVU444:
3132 DRM_DEBUG_KMS("invalid pixel format %s\n",
3133 drm_get_format_name(r->pixel_format));
3138 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
3140 int ret, hsub, vsub, num_planes, i;
3142 ret = format_check(r);
3144 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3145 drm_get_format_name(r->pixel_format));
3149 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3150 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3151 num_planes = drm_format_num_planes(r->pixel_format);
3153 if (r->width == 0 || r->width % hsub) {
3154 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
3158 if (r->height == 0 || r->height % vsub) {
3159 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
3163 for (i = 0; i < num_planes; i++) {
3164 unsigned int width = r->width / (i != 0 ? hsub : 1);
3165 unsigned int height = r->height / (i != 0 ? vsub : 1);
3166 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
3168 if (!r->handles[i]) {
3169 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
3173 if ((uint64_t) width * cpp > UINT_MAX)
3176 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3179 if (r->pitches[i] < width * cpp) {
3180 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
3184 if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
3185 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3190 /* modifier specific checks: */
3191 switch (r->modifier[i]) {
3192 case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE:
3193 /* NOTE: the pitch restriction may be lifted later if it turns
3194 * out that no hw has this restriction:
3196 if (r->pixel_format != DRM_FORMAT_NV12 ||
3197 width % 128 || height % 32 ||
3198 r->pitches[i] % 128) {
3199 DRM_DEBUG_KMS("bad modifier data for plane %d\n", i);
3209 for (i = num_planes; i < 4; i++) {
3210 if (r->modifier[i]) {
3211 DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i);
3215 /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
3216 if (!(r->flags & DRM_MODE_FB_MODIFIERS))
3219 if (r->handles[i]) {
3220 DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i);
3224 if (r->pitches[i]) {
3225 DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i);
3229 if (r->offsets[i]) {
3230 DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i);
3238 static struct drm_framebuffer *
3239 internal_framebuffer_create(struct drm_device *dev,
3240 struct drm_mode_fb_cmd2 *r,
3241 struct drm_file *file_priv)
3243 struct drm_mode_config *config = &dev->mode_config;
3244 struct drm_framebuffer *fb;
3247 if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
3248 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
3249 return ERR_PTR(-EINVAL);
3252 if ((config->min_width > r->width) || (r->width > config->max_width)) {
3253 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3254 r->width, config->min_width, config->max_width);
3255 return ERR_PTR(-EINVAL);
3257 if ((config->min_height > r->height) || (r->height > config->max_height)) {
3258 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3259 r->height, config->min_height, config->max_height);
3260 return ERR_PTR(-EINVAL);
3263 if (r->flags & DRM_MODE_FB_MODIFIERS &&
3264 !dev->mode_config.allow_fb_modifiers) {
3265 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3266 return ERR_PTR(-EINVAL);
3269 ret = framebuffer_check(r);
3271 return ERR_PTR(ret);
3273 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
3275 DRM_DEBUG_KMS("could not create framebuffer\n");
3283 * drm_mode_addfb2 - add an FB to the graphics configuration
3284 * @dev: drm device for the ioctl
3285 * @data: data pointer for the ioctl
3286 * @file_priv: drm file for the ioctl call
3288 * Add a new FB to the specified CRTC, given a user request with format. This is
3289 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3290 * and uses fourcc codes as pixel format specifiers.
3292 * Called by the user via ioctl.
3295 * Zero on success, negative errno on failure.
3297 int drm_mode_addfb2(struct drm_device *dev,
3298 void *data, struct drm_file *file_priv)
3300 struct drm_mode_fb_cmd2 *r = data;
3301 struct drm_framebuffer *fb;
3303 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3306 fb = internal_framebuffer_create(dev, r, file_priv);
3310 /* Transfer ownership to the filp for reaping on close */
3312 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3313 mutex_lock(&file_priv->fbs_lock);
3314 r->fb_id = fb->base.id;
3315 list_add(&fb->filp_head, &file_priv->fbs);
3316 mutex_unlock(&file_priv->fbs_lock);
3322 * drm_mode_rmfb - remove an FB from the configuration
3323 * @dev: drm device for the ioctl
3324 * @data: data pointer for the ioctl
3325 * @file_priv: drm file for the ioctl call
3327 * Remove the FB specified by the user.
3329 * Called by the user via ioctl.
3332 * Zero on success, negative errno on failure.
3334 int drm_mode_rmfb(struct drm_device *dev,
3335 void *data, struct drm_file *file_priv)
3337 struct drm_framebuffer *fb = NULL;
3338 struct drm_framebuffer *fbl = NULL;
3339 uint32_t *id = data;
3342 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3345 mutex_lock(&file_priv->fbs_lock);
3346 mutex_lock(&dev->mode_config.fb_lock);
3347 fb = __drm_framebuffer_lookup(dev, *id);
3351 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3357 list_del_init(&fb->filp_head);
3358 mutex_unlock(&dev->mode_config.fb_lock);
3359 mutex_unlock(&file_priv->fbs_lock);
3361 drm_framebuffer_unreference(fb);
3366 mutex_unlock(&dev->mode_config.fb_lock);
3367 mutex_unlock(&file_priv->fbs_lock);
3373 * drm_mode_getfb - get FB info
3374 * @dev: drm device for the ioctl
3375 * @data: data pointer for the ioctl
3376 * @file_priv: drm file for the ioctl call
3378 * Lookup the FB given its ID and return info about it.
3380 * Called by the user via ioctl.
3383 * Zero on success, negative errno on failure.
3385 int drm_mode_getfb(struct drm_device *dev,
3386 void *data, struct drm_file *file_priv)
3388 struct drm_mode_fb_cmd *r = data;
3389 struct drm_framebuffer *fb;
3392 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3395 fb = drm_framebuffer_lookup(dev, r->fb_id);
3399 r->height = fb->height;
3400 r->width = fb->width;
3401 r->depth = fb->depth;
3402 r->bpp = fb->bits_per_pixel;
3403 r->pitch = fb->pitches[0];
3404 if (fb->funcs->create_handle) {
3405 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
3406 drm_is_control_client(file_priv)) {
3407 ret = fb->funcs->create_handle(fb, file_priv,
3410 /* GET_FB() is an unprivileged ioctl so we must not
3411 * return a buffer-handle to non-master processes! For
3412 * backwards-compatibility reasons, we cannot make
3413 * GET_FB() privileged, so just return an invalid handle
3414 * for non-masters. */
3422 drm_framebuffer_unreference(fb);
3428 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3429 * @dev: drm device for the ioctl
3430 * @data: data pointer for the ioctl
3431 * @file_priv: drm file for the ioctl call
3433 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3434 * rectangle list. Generic userspace which does frontbuffer rendering must call
3435 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3436 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3438 * Modesetting drivers which always update the frontbuffer do not need to
3439 * implement the corresponding ->dirty framebuffer callback.
3441 * Called by the user via ioctl.
3444 * Zero on success, negative errno on failure.
3446 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3447 void *data, struct drm_file *file_priv)
3449 struct drm_clip_rect __user *clips_ptr;
3450 struct drm_clip_rect *clips = NULL;
3451 struct drm_mode_fb_dirty_cmd *r = data;
3452 struct drm_framebuffer *fb;
3457 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3460 fb = drm_framebuffer_lookup(dev, r->fb_id);
3464 num_clips = r->num_clips;
3465 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3467 if (!num_clips != !clips_ptr) {
3472 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3474 /* If userspace annotates copy, clips must come in pairs */
3475 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3480 if (num_clips && clips_ptr) {
3481 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3485 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
3491 ret = copy_from_user(clips, clips_ptr,
3492 num_clips * sizeof(*clips));
3499 if (fb->funcs->dirty) {
3500 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3509 drm_framebuffer_unreference(fb);
3516 * drm_fb_release - remove and free the FBs on this file
3517 * @priv: drm file for the ioctl
3519 * Destroy all the FBs associated with @filp.
3521 * Called by the user via ioctl.
3524 * Zero on success, negative errno on failure.
3526 void drm_fb_release(struct drm_file *priv)
3528 struct drm_framebuffer *fb, *tfb;
3531 * When the file gets released that means no one else can access the fb
3532 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3533 * avoid upsetting lockdep since the universal cursor code adds a
3534 * framebuffer while holding mutex locks.
3536 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3537 * locks is impossible here since no one else but this function can get
3540 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3541 list_del_init(&fb->filp_head);
3543 /* This drops the fpriv->fbs reference. */
3544 drm_framebuffer_unreference(fb);
3549 * drm_property_create - create a new property type
3551 * @flags: flags specifying the property type
3552 * @name: name of the property
3553 * @num_values: number of pre-defined values
3555 * This creates a new generic drm property which can then be attached to a drm
3556 * object with drm_object_attach_property. The returned property object must be
3557 * freed with drm_property_destroy.
3559 * Note that the DRM core keeps a per-device list of properties and that, if
3560 * drm_mode_config_cleanup() is called, it will destroy all properties created
3564 * A pointer to the newly created property on success, NULL on failure.
3566 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3567 const char *name, int num_values)
3569 struct drm_property *property = NULL;
3572 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3576 property->dev = dev;
3579 property->values = kcalloc(num_values, sizeof(uint64_t),
3581 if (!property->values)
3585 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3589 property->flags = flags;
3590 property->num_values = num_values;
3591 INIT_LIST_HEAD(&property->enum_list);
3594 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3595 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3598 list_add_tail(&property->head, &dev->mode_config.property_list);
3600 WARN_ON(!drm_property_type_valid(property));
3604 kfree(property->values);
3608 EXPORT_SYMBOL(drm_property_create);
3611 * drm_property_create_enum - create a new enumeration property type
3613 * @flags: flags specifying the property type
3614 * @name: name of the property
3615 * @props: enumeration lists with property values
3616 * @num_values: number of pre-defined values
3618 * This creates a new generic drm property which can then be attached to a drm
3619 * object with drm_object_attach_property. The returned property object must be
3620 * freed with drm_property_destroy.
3622 * Userspace is only allowed to set one of the predefined values for enumeration
3626 * A pointer to the newly created property on success, NULL on failure.
3628 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3630 const struct drm_prop_enum_list *props,
3633 struct drm_property *property;
3636 flags |= DRM_MODE_PROP_ENUM;
3638 property = drm_property_create(dev, flags, name, num_values);
3642 for (i = 0; i < num_values; i++) {
3643 ret = drm_property_add_enum(property, i,
3647 drm_property_destroy(dev, property);
3654 EXPORT_SYMBOL(drm_property_create_enum);
3657 * drm_property_create_bitmask - create a new bitmask property type
3659 * @flags: flags specifying the property type
3660 * @name: name of the property
3661 * @props: enumeration lists with property bitflags
3662 * @num_props: size of the @props array
3663 * @supported_bits: bitmask of all supported enumeration values
3665 * This creates a new bitmask drm property which can then be attached to a drm
3666 * object with drm_object_attach_property. The returned property object must be
3667 * freed with drm_property_destroy.
3669 * Compared to plain enumeration properties userspace is allowed to set any
3670 * or'ed together combination of the predefined property bitflag values
3673 * A pointer to the newly created property on success, NULL on failure.
3675 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3676 int flags, const char *name,
3677 const struct drm_prop_enum_list *props,
3679 uint64_t supported_bits)
3681 struct drm_property *property;
3682 int i, ret, index = 0;
3683 int num_values = hweight64(supported_bits);
3685 flags |= DRM_MODE_PROP_BITMASK;
3687 property = drm_property_create(dev, flags, name, num_values);
3690 for (i = 0; i < num_props; i++) {
3691 if (!(supported_bits & (1ULL << props[i].type)))
3694 if (WARN_ON(index >= num_values)) {
3695 drm_property_destroy(dev, property);
3699 ret = drm_property_add_enum(property, index++,
3703 drm_property_destroy(dev, property);
3710 EXPORT_SYMBOL(drm_property_create_bitmask);
3712 static struct drm_property *property_create_range(struct drm_device *dev,
3713 int flags, const char *name,
3714 uint64_t min, uint64_t max)
3716 struct drm_property *property;
3718 property = drm_property_create(dev, flags, name, 2);
3722 property->values[0] = min;
3723 property->values[1] = max;
3729 * drm_property_create_range - create a new unsigned ranged property type
3731 * @flags: flags specifying the property type
3732 * @name: name of the property
3733 * @min: minimum value of the property
3734 * @max: maximum value of the property
3736 * This creates a new generic drm property which can then be attached to a drm
3737 * object with drm_object_attach_property. The returned property object must be
3738 * freed with drm_property_destroy.
3740 * Userspace is allowed to set any unsigned integer value in the (min, max)
3744 * A pointer to the newly created property on success, NULL on failure.
3746 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3748 uint64_t min, uint64_t max)
3750 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3753 EXPORT_SYMBOL(drm_property_create_range);
3756 * drm_property_create_signed_range - create a new signed ranged property type
3758 * @flags: flags specifying the property type
3759 * @name: name of the property
3760 * @min: minimum value of the property
3761 * @max: maximum value of the property
3763 * This creates a new generic drm property which can then be attached to a drm
3764 * object with drm_object_attach_property. The returned property object must be
3765 * freed with drm_property_destroy.
3767 * Userspace is allowed to set any signed integer value in the (min, max)
3771 * A pointer to the newly created property on success, NULL on failure.
3773 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3774 int flags, const char *name,
3775 int64_t min, int64_t max)
3777 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3778 name, I642U64(min), I642U64(max));
3780 EXPORT_SYMBOL(drm_property_create_signed_range);
3783 * drm_property_create_object - create a new object property type
3785 * @flags: flags specifying the property type
3786 * @name: name of the property
3787 * @type: object type from DRM_MODE_OBJECT_* defines
3789 * This creates a new generic drm property which can then be attached to a drm
3790 * object with drm_object_attach_property. The returned property object must be
3791 * freed with drm_property_destroy.
3793 * Userspace is only allowed to set this to any property value of the given
3794 * @type. Only useful for atomic properties, which is enforced.
3797 * A pointer to the newly created property on success, NULL on failure.
3799 struct drm_property *drm_property_create_object(struct drm_device *dev,
3800 int flags, const char *name, uint32_t type)
3802 struct drm_property *property;
3804 flags |= DRM_MODE_PROP_OBJECT;
3806 if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
3809 property = drm_property_create(dev, flags, name, 1);
3813 property->values[0] = type;
3817 EXPORT_SYMBOL(drm_property_create_object);
3820 * drm_property_create_bool - create a new boolean property type
3822 * @flags: flags specifying the property type
3823 * @name: name of the property
3825 * This creates a new generic drm property which can then be attached to a drm
3826 * object with drm_object_attach_property. The returned property object must be
3827 * freed with drm_property_destroy.
3829 * This is implemented as a ranged property with only {0, 1} as valid values.
3832 * A pointer to the newly created property on success, NULL on failure.
3834 struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
3837 return drm_property_create_range(dev, flags, name, 0, 1);
3839 EXPORT_SYMBOL(drm_property_create_bool);
3842 * drm_property_add_enum - add a possible value to an enumeration property
3843 * @property: enumeration property to change
3844 * @index: index of the new enumeration
3845 * @value: value of the new enumeration
3846 * @name: symbolic name of the new enumeration
3848 * This functions adds enumerations to a property.
3850 * It's use is deprecated, drivers should use one of the more specific helpers
3851 * to directly create the property with all enumerations already attached.
3854 * Zero on success, error code on failure.
3856 int drm_property_add_enum(struct drm_property *property, int index,
3857 uint64_t value, const char *name)
3859 struct drm_property_enum *prop_enum;
3861 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3862 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
3866 * Bitmask enum properties have the additional constraint of values
3869 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3873 if (!list_empty(&property->enum_list)) {
3874 list_for_each_entry(prop_enum, &property->enum_list, head) {
3875 if (prop_enum->value == value) {
3876 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3877 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3883 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3887 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3888 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3889 prop_enum->value = value;
3891 property->values[index] = value;
3892 list_add_tail(&prop_enum->head, &property->enum_list);
3895 EXPORT_SYMBOL(drm_property_add_enum);
3898 * drm_property_destroy - destroy a drm property
3900 * @property: property to destry
3902 * This function frees a property including any attached resources like
3903 * enumeration values.
3905 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3907 struct drm_property_enum *prop_enum, *pt;
3909 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
3910 list_del(&prop_enum->head);
3914 if (property->num_values)
3915 kfree(property->values);
3916 drm_mode_object_put(dev, &property->base);
3917 list_del(&property->head);
3920 EXPORT_SYMBOL(drm_property_destroy);
3923 * drm_object_attach_property - attach a property to a modeset object
3924 * @obj: drm modeset object
3925 * @property: property to attach
3926 * @init_val: initial value of the property
3928 * This attaches the given property to the modeset object with the given initial
3929 * value. Currently this function cannot fail since the properties are stored in
3930 * a statically sized array.
3932 void drm_object_attach_property(struct drm_mode_object *obj,
3933 struct drm_property *property,
3936 int count = obj->properties->count;
3938 if (count == DRM_OBJECT_MAX_PROPERTY) {
3939 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3940 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3941 "you see this message on the same object type.\n",
3946 obj->properties->properties[count] = property;
3947 obj->properties->values[count] = init_val;
3948 obj->properties->count++;
3949 if (property->flags & DRM_MODE_PROP_ATOMIC)
3950 obj->properties->atomic_count++;
3952 EXPORT_SYMBOL(drm_object_attach_property);
3955 * drm_object_property_set_value - set the value of a property
3956 * @obj: drm mode object to set property value for
3957 * @property: property to set
3958 * @val: value the property should be set to
3960 * This functions sets a given property on a given object. This function only
3961 * changes the software state of the property, it does not call into the
3962 * driver's ->set_property callback.
3965 * Zero on success, error code on failure.
3967 int drm_object_property_set_value(struct drm_mode_object *obj,
3968 struct drm_property *property, uint64_t val)
3972 for (i = 0; i < obj->properties->count; i++) {
3973 if (obj->properties->properties[i] == property) {
3974 obj->properties->values[i] = val;
3981 EXPORT_SYMBOL(drm_object_property_set_value);
3984 * drm_object_property_get_value - retrieve the value of a property
3985 * @obj: drm mode object to get property value from
3986 * @property: property to retrieve
3987 * @val: storage for the property value
3989 * This function retrieves the softare state of the given property for the given
3990 * property. Since there is no driver callback to retrieve the current property
3991 * value this might be out of sync with the hardware, depending upon the driver
3995 * Zero on success, error code on failure.
3997 int drm_object_property_get_value(struct drm_mode_object *obj,
3998 struct drm_property *property, uint64_t *val)
4002 /* read-only properties bypass atomic mechanism and still store
4003 * their value in obj->properties->values[].. mostly to avoid
4004 * having to deal w/ EDID and similar props in atomic paths:
4006 if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
4007 !(property->flags & DRM_MODE_PROP_IMMUTABLE))
4008 return drm_atomic_get_property(obj, property, val);
4010 for (i = 0; i < obj->properties->count; i++) {
4011 if (obj->properties->properties[i] == property) {
4012 *val = obj->properties->values[i];
4019 EXPORT_SYMBOL(drm_object_property_get_value);
4022 * drm_mode_getproperty_ioctl - get the property metadata
4025 * @file_priv: DRM file info
4027 * This function retrieves the metadata for a given property, like the different
4028 * possible values for an enum property or the limits for a range property.
4030 * Blob properties are special
4032 * Called by the user via ioctl.
4035 * Zero on success, negative errno on failure.
4037 int drm_mode_getproperty_ioctl(struct drm_device *dev,
4038 void *data, struct drm_file *file_priv)
4040 struct drm_mode_get_property *out_resp = data;
4041 struct drm_property *property;
4043 int value_count = 0;
4046 struct drm_property_enum *prop_enum;
4047 struct drm_mode_property_enum __user *enum_ptr;
4048 uint64_t __user *values_ptr;
4050 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4053 drm_modeset_lock_all(dev);
4054 property = drm_property_find(dev, out_resp->prop_id);
4060 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4061 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4062 list_for_each_entry(prop_enum, &property->enum_list, head)
4066 value_count = property->num_values;
4068 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
4069 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
4070 out_resp->flags = property->flags;
4072 if ((out_resp->count_values >= value_count) && value_count) {
4073 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
4074 for (i = 0; i < value_count; i++) {
4075 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
4081 out_resp->count_values = value_count;
4083 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4084 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4085 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
4087 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
4088 list_for_each_entry(prop_enum, &property->enum_list, head) {
4090 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
4095 if (copy_to_user(&enum_ptr[copied].name,
4096 &prop_enum->name, DRM_PROP_NAME_LEN)) {
4103 out_resp->count_enum_blobs = enum_count;
4107 * NOTE: The idea seems to have been to use this to read all the blob
4108 * property values. But nothing ever added them to the corresponding
4109 * list, userspace always used the special-purpose get_blob ioctl to
4110 * read the value for a blob property. It also doesn't make a lot of
4111 * sense to return values here when everything else is just metadata for
4112 * the property itself.
4114 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4115 out_resp->count_enum_blobs = 0;
4117 drm_modeset_unlock_all(dev);
4122 * drm_property_create_blob - Create new blob property
4124 * Creates a new blob property for a specified DRM device, optionally
4127 * @dev: DRM device to create property for
4128 * @length: Length to allocate for blob data
4129 * @data: If specified, copies data into blob
4132 * New blob property with a single reference on success, or an ERR_PTR
4135 struct drm_property_blob *
4136 drm_property_create_blob(struct drm_device *dev, size_t length,
4139 struct drm_property_blob *blob;
4142 if (!length || length > ULONG_MAX - sizeof(struct drm_property_blob))
4143 return ERR_PTR(-EINVAL);
4145 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
4147 return ERR_PTR(-ENOMEM);
4149 /* This must be explicitly initialised, so we can safely call list_del
4150 * on it in the removal handler, even if it isn't in a file list. */
4151 INIT_LIST_HEAD(&blob->head_file);
4152 blob->length = length;
4156 memcpy(blob->data, data, length);
4158 mutex_lock(&dev->mode_config.blob_lock);
4160 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
4163 mutex_unlock(&dev->mode_config.blob_lock);
4164 return ERR_PTR(-EINVAL);
4167 kref_init(&blob->refcount);
4169 list_add_tail(&blob->head_global,
4170 &dev->mode_config.property_blob_list);
4172 mutex_unlock(&dev->mode_config.blob_lock);
4176 EXPORT_SYMBOL(drm_property_create_blob);
4179 * drm_property_free_blob - Blob property destructor
4181 * Internal free function for blob properties; must not be used directly.
4185 static void drm_property_free_blob(struct kref *kref)
4187 struct drm_property_blob *blob =
4188 container_of(kref, struct drm_property_blob, refcount);
4190 WARN_ON(!mutex_is_locked(&blob->dev->mode_config.blob_lock));
4192 list_del(&blob->head_global);
4193 list_del(&blob->head_file);
4194 drm_mode_object_put(blob->dev, &blob->base);
4200 * drm_property_unreference_blob - Unreference a blob property
4202 * Drop a reference on a blob property. May free the object.
4204 * @blob: Pointer to blob property
4206 void drm_property_unreference_blob(struct drm_property_blob *blob)
4208 struct drm_device *dev;
4215 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4217 if (kref_put_mutex(&blob->refcount, drm_property_free_blob,
4218 &dev->mode_config.blob_lock))
4219 mutex_unlock(&dev->mode_config.blob_lock);
4221 might_lock(&dev->mode_config.blob_lock);
4223 EXPORT_SYMBOL(drm_property_unreference_blob);
4226 * drm_property_unreference_blob_locked - Unreference a blob property with blob_lock held
4228 * Drop a reference on a blob property. May free the object. This must be
4229 * called with blob_lock held.
4231 * @blob: Pointer to blob property
4233 static void drm_property_unreference_blob_locked(struct drm_property_blob *blob)
4238 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4240 kref_put(&blob->refcount, drm_property_free_blob);
4244 * drm_property_destroy_user_blobs - destroy all blobs created by this client
4246 * @file_priv: destroy all blobs owned by this file handle
4248 void drm_property_destroy_user_blobs(struct drm_device *dev,
4249 struct drm_file *file_priv)
4251 struct drm_property_blob *blob, *bt;
4253 mutex_lock(&dev->mode_config.blob_lock);
4255 list_for_each_entry_safe(blob, bt, &file_priv->blobs, head_file) {
4256 list_del_init(&blob->head_file);
4257 drm_property_unreference_blob_locked(blob);
4260 mutex_unlock(&dev->mode_config.blob_lock);
4264 * drm_property_reference_blob - Take a reference on an existing property
4266 * Take a new reference on an existing blob property.
4268 * @blob: Pointer to blob property
4270 struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob)
4272 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4273 kref_get(&blob->refcount);
4276 EXPORT_SYMBOL(drm_property_reference_blob);
4279 * Like drm_property_lookup_blob, but does not return an additional reference.
4280 * Must be called with blob_lock held.
4282 static struct drm_property_blob *__drm_property_lookup_blob(struct drm_device *dev,
4285 struct drm_mode_object *obj = NULL;
4286 struct drm_property_blob *blob;
4288 WARN_ON(!mutex_is_locked(&dev->mode_config.blob_lock));
4290 mutex_lock(&dev->mode_config.idr_mutex);
4291 obj = idr_find(&dev->mode_config.crtc_idr, id);
4292 if (!obj || (obj->type != DRM_MODE_OBJECT_BLOB) || (obj->id != id))
4295 blob = obj_to_blob(obj);
4296 mutex_unlock(&dev->mode_config.idr_mutex);
4302 * drm_property_lookup_blob - look up a blob property and take a reference
4304 * @id: id of the blob property
4306 * If successful, this takes an additional reference to the blob property.
4307 * callers need to make sure to eventually unreference the returned property
4308 * again, using @drm_property_unreference_blob.
4310 struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
4313 struct drm_property_blob *blob;
4315 mutex_lock(&dev->mode_config.blob_lock);
4316 blob = __drm_property_lookup_blob(dev, id);
4318 if (!kref_get_unless_zero(&blob->refcount))
4321 mutex_unlock(&dev->mode_config.blob_lock);
4325 EXPORT_SYMBOL(drm_property_lookup_blob);
4328 * drm_property_replace_global_blob - atomically replace existing blob property
4330 * @replace: location of blob property pointer to be replaced
4331 * @length: length of data for new blob, or 0 for no data
4332 * @data: content for new blob, or NULL for no data
4333 * @obj_holds_id: optional object for property holding blob ID
4334 * @prop_holds_id: optional property holding blob ID
4335 * @return 0 on success or error on failure
4337 * This function will atomically replace a global property in the blob list,
4338 * optionally updating a property which holds the ID of that property. It is
4339 * guaranteed to be atomic: no caller will be allowed to see intermediate
4340 * results, and either the entire operation will succeed and clean up the
4341 * previous property, or it will fail and the state will be unchanged.
4343 * If length is 0 or data is NULL, no new blob will be created, and the holding
4344 * property, if specified, will be set to 0.
4346 * Access to the replace pointer is assumed to be protected by the caller, e.g.
4347 * by holding the relevant modesetting object lock for its parent.
4349 * For example, a drm_connector has a 'PATH' property, which contains the ID
4350 * of a blob property with the value of the MST path information. Calling this
4351 * function with replace pointing to the connector's path_blob_ptr, length and
4352 * data set for the new path information, obj_holds_id set to the connector's
4353 * base object, and prop_holds_id set to the path property name, will perform
4354 * a completely atomic update. The access to path_blob_ptr is protected by the
4355 * caller holding a lock on the connector.
4357 static int drm_property_replace_global_blob(struct drm_device *dev,
4358 struct drm_property_blob **replace,
4361 struct drm_mode_object *obj_holds_id,
4362 struct drm_property *prop_holds_id)
4364 struct drm_property_blob *new_blob = NULL;
4365 struct drm_property_blob *old_blob = NULL;
4368 WARN_ON(replace == NULL);
4370 old_blob = *replace;
4372 if (length && data) {
4373 new_blob = drm_property_create_blob(dev, length, data);
4374 if (IS_ERR(new_blob))
4375 return PTR_ERR(new_blob);
4378 /* This does not need to be synchronised with blob_lock, as the
4379 * get_properties ioctl locks all modesetting objects, and
4380 * obj_holds_id must be locked before calling here, so we cannot
4381 * have its value out of sync with the list membership modified
4382 * below under blob_lock. */
4384 ret = drm_object_property_set_value(obj_holds_id,
4387 new_blob->base.id : 0);
4392 drm_property_unreference_blob(old_blob);
4393 *replace = new_blob;
4398 drm_property_unreference_blob(new_blob);
4403 * drm_mode_getblob_ioctl - get the contents of a blob property value
4406 * @file_priv: DRM file info
4408 * This function retrieves the contents of a blob property. The value stored in
4409 * an object's blob property is just a normal modeset object id.
4411 * Called by the user via ioctl.
4414 * Zero on success, negative errno on failure.
4416 int drm_mode_getblob_ioctl(struct drm_device *dev,
4417 void *data, struct drm_file *file_priv)
4419 struct drm_mode_get_blob *out_resp = data;
4420 struct drm_property_blob *blob;
4422 void __user *blob_ptr;
4424 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4427 drm_modeset_lock_all(dev);
4428 mutex_lock(&dev->mode_config.blob_lock);
4429 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
4435 if (out_resp->length == blob->length) {
4436 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4437 if (copy_to_user(blob_ptr, blob->data, blob->length)) {
4442 out_resp->length = blob->length;
4445 mutex_unlock(&dev->mode_config.blob_lock);
4446 drm_modeset_unlock_all(dev);
4451 * drm_mode_createblob_ioctl - create a new blob property
4454 * @file_priv: DRM file info
4456 * This function creates a new blob property with user-defined values. In order
4457 * to give us sensible validation and checking when creating, rather than at
4458 * every potential use, we also require a type to be provided upfront.
4460 * Called by the user via ioctl.
4463 * Zero on success, negative errno on failure.
4465 int drm_mode_createblob_ioctl(struct drm_device *dev,
4466 void *data, struct drm_file *file_priv)
4468 struct drm_mode_create_blob *out_resp = data;
4469 struct drm_property_blob *blob;
4470 void __user *blob_ptr;
4473 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4476 blob = drm_property_create_blob(dev, out_resp->length, NULL);
4478 return PTR_ERR(blob);
4480 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4481 if (copy_from_user(blob->data, blob_ptr, out_resp->length)) {
4486 /* Dropping the lock between create_blob and our access here is safe
4487 * as only the same file_priv can remove the blob; at this point, it is
4488 * not associated with any file_priv. */
4489 mutex_lock(&dev->mode_config.blob_lock);
4490 out_resp->blob_id = blob->base.id;
4491 list_add_tail(&blob->head_file, &file_priv->blobs);
4492 mutex_unlock(&dev->mode_config.blob_lock);
4497 drm_property_unreference_blob(blob);
4502 * drm_mode_destroyblob_ioctl - destroy a user blob property
4505 * @file_priv: DRM file info
4507 * Destroy an existing user-defined blob property.
4509 * Called by the user via ioctl.
4512 * Zero on success, negative errno on failure.
4514 int drm_mode_destroyblob_ioctl(struct drm_device *dev,
4515 void *data, struct drm_file *file_priv)
4517 struct drm_mode_destroy_blob *out_resp = data;
4518 struct drm_property_blob *blob = NULL, *bt;
4522 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4525 mutex_lock(&dev->mode_config.blob_lock);
4526 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
4532 /* Ensure the property was actually created by this user. */
4533 list_for_each_entry(bt, &file_priv->blobs, head_file) {
4545 /* We must drop head_file here, because we may not be the last
4546 * reference on the blob. */
4547 list_del_init(&blob->head_file);
4548 drm_property_unreference_blob_locked(blob);
4549 mutex_unlock(&dev->mode_config.blob_lock);
4554 mutex_unlock(&dev->mode_config.blob_lock);
4559 * drm_mode_connector_set_path_property - set tile property on connector
4560 * @connector: connector to set property on.
4561 * @path: path to use for property; must not be NULL.
4563 * This creates a property to expose to userspace to specify a
4564 * connector path. This is mainly used for DisplayPort MST where
4565 * connectors have a topology and we want to allow userspace to give
4566 * them more meaningful names.
4569 * Zero on success, negative errno on failure.
4571 int drm_mode_connector_set_path_property(struct drm_connector *connector,
4574 struct drm_device *dev = connector->dev;
4577 ret = drm_property_replace_global_blob(dev,
4578 &connector->path_blob_ptr,
4582 dev->mode_config.path_property);
4585 EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4588 * drm_mode_connector_set_tile_property - set tile property on connector
4589 * @connector: connector to set property on.
4591 * This looks up the tile information for a connector, and creates a
4592 * property for userspace to parse if it exists. The property is of
4593 * the form of 8 integers using ':' as a separator.
4596 * Zero on success, errno on failure.
4598 int drm_mode_connector_set_tile_property(struct drm_connector *connector)
4600 struct drm_device *dev = connector->dev;
4604 if (!connector->has_tile) {
4605 ret = drm_property_replace_global_blob(dev,
4606 &connector->tile_blob_ptr,
4610 dev->mode_config.tile_property);
4614 snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4615 connector->tile_group->id, connector->tile_is_single_monitor,
4616 connector->num_h_tile, connector->num_v_tile,
4617 connector->tile_h_loc, connector->tile_v_loc,
4618 connector->tile_h_size, connector->tile_v_size);
4620 ret = drm_property_replace_global_blob(dev,
4621 &connector->tile_blob_ptr,
4625 dev->mode_config.tile_property);
4628 EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
4631 * drm_mode_connector_update_edid_property - update the edid property of a connector
4632 * @connector: drm connector
4633 * @edid: new value of the edid property
4635 * This function creates a new blob modeset object and assigns its id to the
4636 * connector's edid property.
4639 * Zero on success, negative errno on failure.
4641 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4642 const struct edid *edid)
4644 struct drm_device *dev = connector->dev;
4648 /* ignore requests to set edid when overridden */
4649 if (connector->override_edid)
4653 size = EDID_LENGTH * (1 + edid->extensions);
4655 ret = drm_property_replace_global_blob(dev,
4656 &connector->edid_blob_ptr,
4660 dev->mode_config.edid_property);
4663 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4665 /* Some properties could refer to dynamic refcnt'd objects, or things that
4666 * need special locking to handle lifetime issues (ie. to ensure the prop
4667 * value doesn't become invalid part way through the property update due to
4668 * race). The value returned by reference via 'obj' should be passed back
4669 * to drm_property_change_valid_put() after the property is set (and the
4670 * object to which the property is attached has a chance to take it's own
4673 bool drm_property_change_valid_get(struct drm_property *property,
4674 uint64_t value, struct drm_mode_object **ref)
4678 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4683 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
4684 if (value < property->values[0] || value > property->values[1])
4687 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4688 int64_t svalue = U642I64(value);
4690 if (svalue < U642I64(property->values[0]) ||
4691 svalue > U642I64(property->values[1]))
4694 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4695 uint64_t valid_mask = 0;
4697 for (i = 0; i < property->num_values; i++)
4698 valid_mask |= (1ULL << property->values[i]);
4699 return !(value & ~valid_mask);
4700 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
4701 struct drm_property_blob *blob;
4706 blob = drm_property_lookup_blob(property->dev, value);
4713 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4714 /* a zero value for an object property translates to null: */
4718 /* handle refcnt'd objects specially: */
4719 if (property->values[0] == DRM_MODE_OBJECT_FB) {
4720 struct drm_framebuffer *fb;
4721 fb = drm_framebuffer_lookup(property->dev, value);
4729 return _object_find(property->dev, value, property->values[0]) != NULL;
4733 for (i = 0; i < property->num_values; i++)
4734 if (property->values[i] == value)
4739 void drm_property_change_valid_put(struct drm_property *property,
4740 struct drm_mode_object *ref)
4745 if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4746 if (property->values[0] == DRM_MODE_OBJECT_FB)
4747 drm_framebuffer_unreference(obj_to_fb(ref));
4748 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4749 drm_property_unreference_blob(obj_to_blob(ref));
4753 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4756 * @file_priv: DRM file info
4758 * This function sets the current value for a connectors's property. It also
4759 * calls into a driver's ->set_property callback to update the hardware state
4761 * Called by the user via ioctl.
4764 * Zero on success, negative errno on failure.
4766 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4767 void *data, struct drm_file *file_priv)
4769 struct drm_mode_connector_set_property *conn_set_prop = data;
4770 struct drm_mode_obj_set_property obj_set_prop = {
4771 .value = conn_set_prop->value,
4772 .prop_id = conn_set_prop->prop_id,
4773 .obj_id = conn_set_prop->connector_id,
4774 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4777 /* It does all the locking and checking we need */
4778 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
4781 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4782 struct drm_property *property,
4786 struct drm_connector *connector = obj_to_connector(obj);
4788 /* Do DPMS ourselves */
4789 if (property == connector->dev->mode_config.dpms_property) {
4791 if (connector->funcs->dpms)
4792 ret = (*connector->funcs->dpms)(connector, (int)value);
4793 } else if (connector->funcs->set_property)
4794 ret = connector->funcs->set_property(connector, property, value);
4796 /* store the property value if successful */
4798 drm_object_property_set_value(&connector->base, property, value);
4802 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4803 struct drm_property *property,
4807 struct drm_crtc *crtc = obj_to_crtc(obj);
4809 if (crtc->funcs->set_property)
4810 ret = crtc->funcs->set_property(crtc, property, value);
4812 drm_object_property_set_value(obj, property, value);
4818 * drm_mode_plane_set_obj_prop - set the value of a property
4819 * @plane: drm plane object to set property value for
4820 * @property: property to set
4821 * @value: value the property should be set to
4823 * This functions sets a given property on a given plane object. This function
4824 * calls the driver's ->set_property callback and changes the software state of
4825 * the property if the callback succeeds.
4828 * Zero on success, error code on failure.
4830 int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4831 struct drm_property *property,
4835 struct drm_mode_object *obj = &plane->base;
4837 if (plane->funcs->set_property)
4838 ret = plane->funcs->set_property(plane, property, value);
4840 drm_object_property_set_value(obj, property, value);
4844 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4847 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4850 * @file_priv: DRM file info
4852 * This function retrieves the current value for an object's property. Compared
4853 * to the connector specific ioctl this one is extended to also work on crtc and
4856 * Called by the user via ioctl.
4859 * Zero on success, negative errno on failure.
4861 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4862 struct drm_file *file_priv)
4864 struct drm_mode_obj_get_properties *arg = data;
4865 struct drm_mode_object *obj;
4868 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4871 drm_modeset_lock_all(dev);
4873 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4878 if (!obj->properties) {
4883 ret = get_properties(obj, file_priv->atomic,
4884 (uint32_t __user *)(unsigned long)(arg->props_ptr),
4885 (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
4889 drm_modeset_unlock_all(dev);
4894 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4897 * @file_priv: DRM file info
4899 * This function sets the current value for an object's property. It also calls
4900 * into a driver's ->set_property callback to update the hardware state.
4901 * Compared to the connector specific ioctl this one is extended to also work on
4902 * crtc and plane objects.
4904 * Called by the user via ioctl.
4907 * Zero on success, negative errno on failure.
4909 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4910 struct drm_file *file_priv)
4912 struct drm_mode_obj_set_property *arg = data;
4913 struct drm_mode_object *arg_obj;
4914 struct drm_mode_object *prop_obj;
4915 struct drm_property *property;
4916 int i, ret = -EINVAL;
4917 struct drm_mode_object *ref;
4919 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4922 drm_modeset_lock_all(dev);
4924 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4929 if (!arg_obj->properties)
4932 for (i = 0; i < arg_obj->properties->count; i++)
4933 if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
4936 if (i == arg_obj->properties->count)
4939 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4940 DRM_MODE_OBJECT_PROPERTY);
4945 property = obj_to_property(prop_obj);
4947 if (!drm_property_change_valid_get(property, arg->value, &ref))
4950 switch (arg_obj->type) {
4951 case DRM_MODE_OBJECT_CONNECTOR:
4952 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4955 case DRM_MODE_OBJECT_CRTC:
4956 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4958 case DRM_MODE_OBJECT_PLANE:
4959 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
4960 property, arg->value);
4964 drm_property_change_valid_put(property, ref);
4967 drm_modeset_unlock_all(dev);
4972 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4973 * @connector: connector to attach
4974 * @encoder: encoder to attach @connector to
4976 * This function links up a connector to an encoder. Note that the routing
4977 * restrictions between encoders and crtcs are exposed to userspace through the
4978 * possible_clones and possible_crtcs bitmasks.
4981 * Zero on success, negative errno on failure.
4983 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4984 struct drm_encoder *encoder)
4988 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4989 if (connector->encoder_ids[i] == 0) {
4990 connector->encoder_ids[i] = encoder->base.id;
4996 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4999 * drm_mode_crtc_set_gamma_size - set the gamma table size
5000 * @crtc: CRTC to set the gamma table size for
5001 * @gamma_size: size of the gamma table
5003 * Drivers which support gamma tables should set this to the supported gamma
5004 * table size when initializing the CRTC. Currently the drm core only supports a
5005 * fixed gamma table size.
5008 * Zero on success, negative errno on failure.
5010 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
5013 crtc->gamma_size = gamma_size;
5015 crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
5017 if (!crtc->gamma_store) {
5018 crtc->gamma_size = 0;
5024 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
5027 * drm_mode_gamma_set_ioctl - set the gamma table
5030 * @file_priv: DRM file info
5032 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
5033 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
5035 * Called by the user via ioctl.
5038 * Zero on success, negative errno on failure.
5040 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
5041 void *data, struct drm_file *file_priv)
5043 struct drm_mode_crtc_lut *crtc_lut = data;
5044 struct drm_crtc *crtc;
5045 void *r_base, *g_base, *b_base;
5049 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5052 drm_modeset_lock_all(dev);
5053 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5059 if (crtc->funcs->gamma_set == NULL) {
5064 /* memcpy into gamma store */
5065 if (crtc_lut->gamma_size != crtc->gamma_size) {
5070 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5071 r_base = crtc->gamma_store;
5072 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
5077 g_base = r_base + size;
5078 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
5083 b_base = g_base + size;
5084 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
5089 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
5092 drm_modeset_unlock_all(dev);
5098 * drm_mode_gamma_get_ioctl - get the gamma table
5101 * @file_priv: DRM file info
5103 * Copy the current gamma table into the storage provided. This also provides
5104 * the gamma table size the driver expects, which can be used to size the
5105 * allocated storage.
5107 * Called by the user via ioctl.
5110 * Zero on success, negative errno on failure.
5112 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
5113 void *data, struct drm_file *file_priv)
5115 struct drm_mode_crtc_lut *crtc_lut = data;
5116 struct drm_crtc *crtc;
5117 void *r_base, *g_base, *b_base;
5121 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5124 drm_modeset_lock_all(dev);
5125 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5131 /* memcpy into gamma store */
5132 if (crtc_lut->gamma_size != crtc->gamma_size) {
5137 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5138 r_base = crtc->gamma_store;
5139 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
5144 g_base = r_base + size;
5145 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
5150 b_base = g_base + size;
5151 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
5156 drm_modeset_unlock_all(dev);
5161 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
5164 * @file_priv: DRM file info
5166 * This schedules an asynchronous update on a given CRTC, called page flip.
5167 * Optionally a drm event is generated to signal the completion of the event.
5168 * Generic drivers cannot assume that a pageflip with changed framebuffer
5169 * properties (including driver specific metadata like tiling layout) will work,
5170 * but some drivers support e.g. pixel format changes through the pageflip
5173 * Called by the user via ioctl.
5176 * Zero on success, negative errno on failure.
5178 int drm_mode_page_flip_ioctl(struct drm_device *dev,
5179 void *data, struct drm_file *file_priv)
5181 struct drm_mode_crtc_page_flip *page_flip = data;
5182 struct drm_crtc *crtc;
5183 struct drm_framebuffer *fb = NULL;
5184 struct drm_pending_vblank_event *e = NULL;
5185 unsigned long flags;
5188 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
5189 page_flip->reserved != 0)
5192 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
5195 crtc = drm_crtc_find(dev, page_flip->crtc_id);
5199 drm_modeset_lock_crtc(crtc, crtc->primary);
5200 if (crtc->primary->fb == NULL) {
5201 /* The framebuffer is currently unbound, presumably
5202 * due to a hotplug event, that userspace has not
5209 if (crtc->funcs->page_flip == NULL)
5212 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
5219 const struct drm_plane_state *state = crtc->primary->state;
5221 ret = check_src_coords(state->src_x, state->src_y,
5222 state->src_w, state->src_h, fb);
5224 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
5229 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
5230 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
5235 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
5237 spin_lock_irqsave(&dev->event_lock, flags);
5238 if (file_priv->event_space < sizeof(e->event)) {
5239 spin_unlock_irqrestore(&dev->event_lock, flags);
5242 file_priv->event_space -= sizeof(e->event);
5243 spin_unlock_irqrestore(&dev->event_lock, flags);
5245 e = kzalloc(sizeof(*e), GFP_KERNEL);
5247 spin_lock_irqsave(&dev->event_lock, flags);
5248 file_priv->event_space += sizeof(e->event);
5249 spin_unlock_irqrestore(&dev->event_lock, flags);
5253 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
5254 e->event.base.length = sizeof(e->event);
5255 e->event.user_data = page_flip->user_data;
5256 e->base.event = &e->event.base;
5257 e->base.file_priv = file_priv;
5259 (void (*) (struct drm_pending_event *)) kfree;
5262 crtc->primary->old_fb = crtc->primary->fb;
5263 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
5265 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
5266 spin_lock_irqsave(&dev->event_lock, flags);
5267 file_priv->event_space += sizeof(e->event);
5268 spin_unlock_irqrestore(&dev->event_lock, flags);
5271 /* Keep the old fb, don't unref it. */
5272 crtc->primary->old_fb = NULL;
5274 crtc->primary->fb = fb;
5275 /* Unref only the old framebuffer. */
5281 drm_framebuffer_unreference(fb);
5282 if (crtc->primary->old_fb)
5283 drm_framebuffer_unreference(crtc->primary->old_fb);
5284 crtc->primary->old_fb = NULL;
5285 drm_modeset_unlock_crtc(crtc);
5291 * drm_mode_config_reset - call ->reset callbacks
5294 * This functions calls all the crtc's, encoder's and connector's ->reset
5295 * callback. Drivers can use this in e.g. their driver load or resume code to
5296 * reset hardware and software state.
5298 void drm_mode_config_reset(struct drm_device *dev)
5300 struct drm_crtc *crtc;
5301 struct drm_plane *plane;
5302 struct drm_encoder *encoder;
5303 struct drm_connector *connector;
5305 drm_for_each_plane(plane, dev)
5306 if (plane->funcs->reset)
5307 plane->funcs->reset(plane);
5309 drm_for_each_crtc(crtc, dev)
5310 if (crtc->funcs->reset)
5311 crtc->funcs->reset(crtc);
5313 drm_for_each_encoder(encoder, dev)
5314 if (encoder->funcs->reset)
5315 encoder->funcs->reset(encoder);
5317 mutex_lock(&dev->mode_config.mutex);
5318 drm_for_each_connector(connector, dev)
5319 if (connector->funcs->reset)
5320 connector->funcs->reset(connector);
5321 mutex_unlock(&dev->mode_config.mutex);
5323 EXPORT_SYMBOL(drm_mode_config_reset);
5326 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5329 * @file_priv: DRM file info
5331 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5332 * TTM or something else entirely) and returns the resulting buffer handle. This
5333 * handle can then be wrapped up into a framebuffer modeset object.
5335 * Note that userspace is not allowed to use such objects for render
5336 * acceleration - drivers must create their own private ioctls for such a use
5339 * Called by the user via ioctl.
5342 * Zero on success, negative errno on failure.
5344 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
5345 void *data, struct drm_file *file_priv)
5347 struct drm_mode_create_dumb *args = data;
5348 u32 cpp, stride, size;
5350 if (!dev->driver->dumb_create)
5352 if (!args->width || !args->height || !args->bpp)
5355 /* overflow checks for 32bit size calculations */
5356 /* NOTE: DIV_ROUND_UP() can overflow */
5357 cpp = DIV_ROUND_UP(args->bpp, 8);
5358 if (!cpp || cpp > 0xffffffffU / args->width)
5360 stride = cpp * args->width;
5361 if (args->height > 0xffffffffU / stride)
5364 /* test for wrap-around */
5365 size = args->height * stride;
5366 if (PAGE_ALIGN(size) == 0)
5370 * handle, pitch and size are output parameters. Zero them out to
5371 * prevent drivers from accidentally using uninitialized data. Since
5372 * not all existing userspace is clearing these fields properly we
5373 * cannot reject IOCTL with garbage in them.
5379 return dev->driver->dumb_create(file_priv, dev, args);
5383 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5386 * @file_priv: DRM file info
5388 * Allocate an offset in the drm device node's address space to be able to
5389 * memory map a dumb buffer.
5391 * Called by the user via ioctl.
5394 * Zero on success, negative errno on failure.
5396 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
5397 void *data, struct drm_file *file_priv)
5399 struct drm_mode_map_dumb *args = data;
5401 /* call driver ioctl to get mmap offset */
5402 if (!dev->driver->dumb_map_offset)
5405 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
5409 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5412 * @file_priv: DRM file info
5414 * This destroys the userspace handle for the given dumb backing storage buffer.
5415 * Since buffer objects must be reference counted in the kernel a buffer object
5416 * won't be immediately freed if a framebuffer modeset object still uses it.
5418 * Called by the user via ioctl.
5421 * Zero on success, negative errno on failure.
5423 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
5424 void *data, struct drm_file *file_priv)
5426 struct drm_mode_destroy_dumb *args = data;
5428 if (!dev->driver->dumb_destroy)
5431 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
5435 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5436 * @format: pixel format (DRM_FORMAT_*)
5437 * @depth: storage for the depth value
5438 * @bpp: storage for the bpp value
5440 * This only supports RGB formats here for compat with code that doesn't use
5441 * pixel formats directly yet.
5443 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
5448 case DRM_FORMAT_RGB332:
5449 case DRM_FORMAT_BGR233:
5453 case DRM_FORMAT_XRGB1555:
5454 case DRM_FORMAT_XBGR1555:
5455 case DRM_FORMAT_RGBX5551:
5456 case DRM_FORMAT_BGRX5551:
5457 case DRM_FORMAT_ARGB1555:
5458 case DRM_FORMAT_ABGR1555:
5459 case DRM_FORMAT_RGBA5551:
5460 case DRM_FORMAT_BGRA5551:
5464 case DRM_FORMAT_RGB565:
5465 case DRM_FORMAT_BGR565:
5469 case DRM_FORMAT_RGB888:
5470 case DRM_FORMAT_BGR888:
5474 case DRM_FORMAT_XRGB8888:
5475 case DRM_FORMAT_XBGR8888:
5476 case DRM_FORMAT_RGBX8888:
5477 case DRM_FORMAT_BGRX8888:
5481 case DRM_FORMAT_XRGB2101010:
5482 case DRM_FORMAT_XBGR2101010:
5483 case DRM_FORMAT_RGBX1010102:
5484 case DRM_FORMAT_BGRX1010102:
5485 case DRM_FORMAT_ARGB2101010:
5486 case DRM_FORMAT_ABGR2101010:
5487 case DRM_FORMAT_RGBA1010102:
5488 case DRM_FORMAT_BGRA1010102:
5492 case DRM_FORMAT_ARGB8888:
5493 case DRM_FORMAT_ABGR8888:
5494 case DRM_FORMAT_RGBA8888:
5495 case DRM_FORMAT_BGRA8888:
5500 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5501 drm_get_format_name(format));
5507 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
5510 * drm_format_num_planes - get the number of planes for format
5511 * @format: pixel format (DRM_FORMAT_*)
5514 * The number of planes used by the specified pixel format.
5516 int drm_format_num_planes(uint32_t format)
5519 case DRM_FORMAT_YUV410:
5520 case DRM_FORMAT_YVU410:
5521 case DRM_FORMAT_YUV411:
5522 case DRM_FORMAT_YVU411:
5523 case DRM_FORMAT_YUV420:
5524 case DRM_FORMAT_YVU420:
5525 case DRM_FORMAT_YUV422:
5526 case DRM_FORMAT_YVU422:
5527 case DRM_FORMAT_YUV444:
5528 case DRM_FORMAT_YVU444:
5530 case DRM_FORMAT_NV12:
5531 case DRM_FORMAT_NV21:
5532 case DRM_FORMAT_NV16:
5533 case DRM_FORMAT_NV61:
5534 case DRM_FORMAT_NV24:
5535 case DRM_FORMAT_NV42:
5541 EXPORT_SYMBOL(drm_format_num_planes);
5544 * drm_format_plane_cpp - determine the bytes per pixel value
5545 * @format: pixel format (DRM_FORMAT_*)
5546 * @plane: plane index
5549 * The bytes per pixel value for the specified plane.
5551 int drm_format_plane_cpp(uint32_t format, int plane)
5556 if (plane >= drm_format_num_planes(format))
5560 case DRM_FORMAT_YUYV:
5561 case DRM_FORMAT_YVYU:
5562 case DRM_FORMAT_UYVY:
5563 case DRM_FORMAT_VYUY:
5565 case DRM_FORMAT_NV12:
5566 case DRM_FORMAT_NV21:
5567 case DRM_FORMAT_NV16:
5568 case DRM_FORMAT_NV61:
5569 case DRM_FORMAT_NV24:
5570 case DRM_FORMAT_NV42:
5571 return plane ? 2 : 1;
5572 case DRM_FORMAT_YUV410:
5573 case DRM_FORMAT_YVU410:
5574 case DRM_FORMAT_YUV411:
5575 case DRM_FORMAT_YVU411:
5576 case DRM_FORMAT_YUV420:
5577 case DRM_FORMAT_YVU420:
5578 case DRM_FORMAT_YUV422:
5579 case DRM_FORMAT_YVU422:
5580 case DRM_FORMAT_YUV444:
5581 case DRM_FORMAT_YVU444:
5584 drm_fb_get_bpp_depth(format, &depth, &bpp);
5588 EXPORT_SYMBOL(drm_format_plane_cpp);
5591 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5592 * @format: pixel format (DRM_FORMAT_*)
5595 * The horizontal chroma subsampling factor for the
5596 * specified pixel format.
5598 int drm_format_horz_chroma_subsampling(uint32_t format)
5601 case DRM_FORMAT_YUV411:
5602 case DRM_FORMAT_YVU411:
5603 case DRM_FORMAT_YUV410:
5604 case DRM_FORMAT_YVU410:
5606 case DRM_FORMAT_YUYV:
5607 case DRM_FORMAT_YVYU:
5608 case DRM_FORMAT_UYVY:
5609 case DRM_FORMAT_VYUY:
5610 case DRM_FORMAT_NV12:
5611 case DRM_FORMAT_NV21:
5612 case DRM_FORMAT_NV16:
5613 case DRM_FORMAT_NV61:
5614 case DRM_FORMAT_YUV422:
5615 case DRM_FORMAT_YVU422:
5616 case DRM_FORMAT_YUV420:
5617 case DRM_FORMAT_YVU420:
5623 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5626 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5627 * @format: pixel format (DRM_FORMAT_*)
5630 * The vertical chroma subsampling factor for the
5631 * specified pixel format.
5633 int drm_format_vert_chroma_subsampling(uint32_t format)
5636 case DRM_FORMAT_YUV410:
5637 case DRM_FORMAT_YVU410:
5639 case DRM_FORMAT_YUV420:
5640 case DRM_FORMAT_YVU420:
5641 case DRM_FORMAT_NV12:
5642 case DRM_FORMAT_NV21:
5648 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
5651 * drm_rotation_simplify() - Try to simplify the rotation
5652 * @rotation: Rotation to be simplified
5653 * @supported_rotations: Supported rotations
5655 * Attempt to simplify the rotation to a form that is supported.
5656 * Eg. if the hardware supports everything except DRM_REFLECT_X
5657 * one could call this function like this:
5659 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5660 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5661 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5663 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5664 * transforms the hardware supports, this function may not
5665 * be able to produce a supported transform, so the caller should
5666 * check the result afterwards.
5668 unsigned int drm_rotation_simplify(unsigned int rotation,
5669 unsigned int supported_rotations)
5671 if (rotation & ~supported_rotations) {
5672 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5673 rotation = (rotation & DRM_REFLECT_MASK) |
5674 BIT((ffs(rotation & DRM_ROTATE_MASK) + 1) % 4);
5679 EXPORT_SYMBOL(drm_rotation_simplify);
5682 * drm_mode_config_init - initialize DRM mode_configuration structure
5685 * Initialize @dev's mode_config structure, used for tracking the graphics
5686 * configuration of @dev.
5688 * Since this initializes the modeset locks, no locking is possible. Which is no
5689 * problem, since this should happen single threaded at init time. It is the
5690 * driver's problem to ensure this guarantee.
5693 void drm_mode_config_init(struct drm_device *dev)
5695 mutex_init(&dev->mode_config.mutex);
5696 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
5697 mutex_init(&dev->mode_config.idr_mutex);
5698 mutex_init(&dev->mode_config.fb_lock);
5699 mutex_init(&dev->mode_config.blob_lock);
5700 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5701 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5702 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5703 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5704 INIT_LIST_HEAD(&dev->mode_config.property_list);
5705 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5706 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5707 idr_init(&dev->mode_config.crtc_idr);
5708 idr_init(&dev->mode_config.tile_idr);
5710 drm_modeset_lock_all(dev);
5711 drm_mode_create_standard_properties(dev);
5712 drm_modeset_unlock_all(dev);
5714 /* Just to be sure */
5715 dev->mode_config.num_fb = 0;
5716 dev->mode_config.num_connector = 0;
5717 dev->mode_config.num_crtc = 0;
5718 dev->mode_config.num_encoder = 0;
5719 dev->mode_config.num_overlay_plane = 0;
5720 dev->mode_config.num_total_plane = 0;
5722 EXPORT_SYMBOL(drm_mode_config_init);
5725 * drm_mode_config_cleanup - free up DRM mode_config info
5728 * Free up all the connectors and CRTCs associated with this DRM device, then
5729 * free up the framebuffers and associated buffer objects.
5731 * Note that since this /should/ happen single-threaded at driver/device
5732 * teardown time, no locking is required. It's the driver's job to ensure that
5733 * this guarantee actually holds true.
5735 * FIXME: cleanup any dangling user buffer objects too
5737 void drm_mode_config_cleanup(struct drm_device *dev)
5739 struct drm_connector *connector, *ot;
5740 struct drm_crtc *crtc, *ct;
5741 struct drm_encoder *encoder, *enct;
5742 struct drm_framebuffer *fb, *fbt;
5743 struct drm_property *property, *pt;
5744 struct drm_property_blob *blob, *bt;
5745 struct drm_plane *plane, *plt;
5747 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5749 encoder->funcs->destroy(encoder);
5752 list_for_each_entry_safe(connector, ot,
5753 &dev->mode_config.connector_list, head) {
5754 connector->funcs->destroy(connector);
5757 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5759 drm_property_destroy(dev, property);
5762 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5764 drm_property_unreference_blob(blob);
5768 * Single-threaded teardown context, so it's not required to grab the
5769 * fb_lock to protect against concurrent fb_list access. Contrary, it
5770 * would actually deadlock with the drm_framebuffer_cleanup function.
5772 * Also, if there are any framebuffers left, that's a driver leak now,
5773 * so politely WARN about this.
5775 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5776 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5777 drm_framebuffer_free(&fb->refcount);
5780 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5782 plane->funcs->destroy(plane);
5785 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5786 crtc->funcs->destroy(crtc);
5789 idr_destroy(&dev->mode_config.tile_idr);
5790 idr_destroy(&dev->mode_config.crtc_idr);
5791 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
5793 EXPORT_SYMBOL(drm_mode_config_cleanup);
5795 struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5796 unsigned int supported_rotations)
5798 static const struct drm_prop_enum_list props[] = {
5799 { DRM_ROTATE_0, "rotate-0" },
5800 { DRM_ROTATE_90, "rotate-90" },
5801 { DRM_ROTATE_180, "rotate-180" },
5802 { DRM_ROTATE_270, "rotate-270" },
5803 { DRM_REFLECT_X, "reflect-x" },
5804 { DRM_REFLECT_Y, "reflect-y" },
5807 return drm_property_create_bitmask(dev, 0, "rotation",
5808 props, ARRAY_SIZE(props),
5809 supported_rotations);
5811 EXPORT_SYMBOL(drm_mode_create_rotation_property);
5816 * Tile groups are used to represent tiled monitors with a unique
5817 * integer identifier. Tiled monitors using DisplayID v1.3 have
5818 * a unique 8-byte handle, we store this in a tile group, so we
5819 * have a common identifier for all tiles in a monitor group.
5821 static void drm_tile_group_free(struct kref *kref)
5823 struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
5824 struct drm_device *dev = tg->dev;
5825 mutex_lock(&dev->mode_config.idr_mutex);
5826 idr_remove(&dev->mode_config.tile_idr, tg->id);
5827 mutex_unlock(&dev->mode_config.idr_mutex);
5832 * drm_mode_put_tile_group - drop a reference to a tile group.
5834 * @tg: tile group to drop reference to.
5836 * drop reference to tile group and free if 0.
5838 void drm_mode_put_tile_group(struct drm_device *dev,
5839 struct drm_tile_group *tg)
5841 kref_put(&tg->refcount, drm_tile_group_free);
5845 * drm_mode_get_tile_group - get a reference to an existing tile group
5847 * @topology: 8-bytes unique per monitor.
5849 * Use the unique bytes to get a reference to an existing tile group.
5852 * tile group or NULL if not found.
5854 struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
5857 struct drm_tile_group *tg;
5859 mutex_lock(&dev->mode_config.idr_mutex);
5860 idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
5861 if (!memcmp(tg->group_data, topology, 8)) {
5862 if (!kref_get_unless_zero(&tg->refcount))
5864 mutex_unlock(&dev->mode_config.idr_mutex);
5868 mutex_unlock(&dev->mode_config.idr_mutex);
5871 EXPORT_SYMBOL(drm_mode_get_tile_group);
5874 * drm_mode_create_tile_group - create a tile group from a displayid description
5876 * @topology: 8-bytes unique per monitor.
5878 * Create a tile group for the unique monitor, and get a unique
5879 * identifier for the tile group.
5882 * new tile group or error.
5884 struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
5887 struct drm_tile_group *tg;
5890 tg = kzalloc(sizeof(*tg), GFP_KERNEL);
5892 return ERR_PTR(-ENOMEM);
5894 kref_init(&tg->refcount);
5895 memcpy(tg->group_data, topology, 8);
5898 mutex_lock(&dev->mode_config.idr_mutex);
5899 ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
5907 mutex_unlock(&dev->mode_config.idr_mutex);
5910 EXPORT_SYMBOL(drm_mode_create_tile_group);