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
1080 * @name: printf style format string for the encoder name, or NULL for default name
1082 * Initialises a preallocated encoder. Encoder should be
1083 * subclassed as part of driver encoder objects.
1086 * Zero on success, error code on failure.
1088 int drm_encoder_init(struct drm_device *dev,
1089 struct drm_encoder *encoder,
1090 const struct drm_encoder_funcs *funcs,
1091 int encoder_type, const char *name, ...)
1095 drm_modeset_lock_all(dev);
1097 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1102 encoder->encoder_type = encoder_type;
1103 encoder->funcs = funcs;
1104 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1105 drm_encoder_enum_list[encoder_type].name,
1107 if (!encoder->name) {
1112 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1113 dev->mode_config.num_encoder++;
1117 drm_mode_object_put(dev, &encoder->base);
1120 drm_modeset_unlock_all(dev);
1124 EXPORT_SYMBOL(drm_encoder_init);
1127 * drm_encoder_cleanup - cleans up an initialised encoder
1128 * @encoder: encoder to cleanup
1130 * Cleans up the encoder but doesn't free the object.
1132 void drm_encoder_cleanup(struct drm_encoder *encoder)
1134 struct drm_device *dev = encoder->dev;
1136 drm_modeset_lock_all(dev);
1137 drm_mode_object_put(dev, &encoder->base);
1138 kfree(encoder->name);
1139 list_del(&encoder->head);
1140 dev->mode_config.num_encoder--;
1141 drm_modeset_unlock_all(dev);
1143 memset(encoder, 0, sizeof(*encoder));
1145 EXPORT_SYMBOL(drm_encoder_cleanup);
1148 * drm_universal_plane_init - Initialize a new universal plane object
1150 * @plane: plane object to init
1151 * @possible_crtcs: bitmask of possible CRTCs
1152 * @funcs: callbacks for the new plane
1153 * @formats: array of supported formats (%DRM_FORMAT_*)
1154 * @format_count: number of elements in @formats
1155 * @type: type of plane (overlay, primary, cursor)
1156 * @name: printf style format string for the plane name, or NULL for default name
1158 * Initializes a plane object of type @type.
1161 * Zero on success, error code on failure.
1163 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1164 unsigned long possible_crtcs,
1165 const struct drm_plane_funcs *funcs,
1166 const uint32_t *formats, unsigned int format_count,
1167 enum drm_plane_type type,
1168 const char *name, ...)
1170 struct drm_mode_config *config = &dev->mode_config;
1173 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1177 drm_modeset_lock_init(&plane->mutex);
1179 plane->base.properties = &plane->properties;
1181 plane->funcs = funcs;
1182 plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
1184 if (!plane->format_types) {
1185 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1186 drm_mode_object_put(dev, &plane->base);
1190 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1191 plane->format_count = format_count;
1192 plane->possible_crtcs = possible_crtcs;
1195 list_add_tail(&plane->head, &config->plane_list);
1196 config->num_total_plane++;
1197 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1198 config->num_overlay_plane++;
1200 drm_object_attach_property(&plane->base,
1201 config->plane_type_property,
1204 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
1205 drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
1206 drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
1207 drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
1208 drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
1209 drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
1210 drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
1211 drm_object_attach_property(&plane->base, config->prop_src_x, 0);
1212 drm_object_attach_property(&plane->base, config->prop_src_y, 0);
1213 drm_object_attach_property(&plane->base, config->prop_src_w, 0);
1214 drm_object_attach_property(&plane->base, config->prop_src_h, 0);
1219 EXPORT_SYMBOL(drm_universal_plane_init);
1222 * drm_plane_init - Initialize a legacy plane
1224 * @plane: plane object to init
1225 * @possible_crtcs: bitmask of possible CRTCs
1226 * @funcs: callbacks for the new plane
1227 * @formats: array of supported formats (%DRM_FORMAT_*)
1228 * @format_count: number of elements in @formats
1229 * @is_primary: plane type (primary vs overlay)
1231 * Legacy API to initialize a DRM plane.
1233 * New drivers should call drm_universal_plane_init() instead.
1236 * Zero on success, error code on failure.
1238 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1239 unsigned long possible_crtcs,
1240 const struct drm_plane_funcs *funcs,
1241 const uint32_t *formats, unsigned int format_count,
1244 enum drm_plane_type type;
1246 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1247 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1248 formats, format_count, type, NULL);
1250 EXPORT_SYMBOL(drm_plane_init);
1253 * drm_plane_cleanup - Clean up the core plane usage
1254 * @plane: plane to cleanup
1256 * This function cleans up @plane and removes it from the DRM mode setting
1257 * core. Note that the function does *not* free the plane structure itself,
1258 * this is the responsibility of the caller.
1260 void drm_plane_cleanup(struct drm_plane *plane)
1262 struct drm_device *dev = plane->dev;
1264 drm_modeset_lock_all(dev);
1265 kfree(plane->format_types);
1266 drm_mode_object_put(dev, &plane->base);
1268 BUG_ON(list_empty(&plane->head));
1270 list_del(&plane->head);
1271 dev->mode_config.num_total_plane--;
1272 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1273 dev->mode_config.num_overlay_plane--;
1274 drm_modeset_unlock_all(dev);
1276 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1277 if (plane->state && plane->funcs->atomic_destroy_state)
1278 plane->funcs->atomic_destroy_state(plane, plane->state);
1280 memset(plane, 0, sizeof(*plane));
1282 EXPORT_SYMBOL(drm_plane_cleanup);
1285 * drm_plane_index - find the index of a registered plane
1286 * @plane: plane to find index for
1288 * Given a registered plane, return the index of that CRTC within a DRM
1289 * device's list of planes.
1291 unsigned int drm_plane_index(struct drm_plane *plane)
1293 unsigned int index = 0;
1294 struct drm_plane *tmp;
1296 drm_for_each_plane(tmp, plane->dev) {
1305 EXPORT_SYMBOL(drm_plane_index);
1308 * drm_plane_from_index - find the registered plane at an index
1310 * @idx: index of registered plane to find for
1312 * Given a plane index, return the registered plane from DRM device's
1313 * list of planes with matching index.
1316 drm_plane_from_index(struct drm_device *dev, int idx)
1318 struct drm_plane *plane;
1321 drm_for_each_plane(plane, dev) {
1328 EXPORT_SYMBOL(drm_plane_from_index);
1331 * drm_plane_force_disable - Forcibly disable a plane
1332 * @plane: plane to disable
1334 * Forces the plane to be disabled.
1336 * Used when the plane's current framebuffer is destroyed,
1337 * and when restoring fbdev mode.
1339 void drm_plane_force_disable(struct drm_plane *plane)
1346 plane->old_fb = plane->fb;
1347 ret = plane->funcs->disable_plane(plane);
1349 DRM_ERROR("failed to disable plane with busy fb\n");
1350 plane->old_fb = NULL;
1353 /* disconnect the plane from the fb and crtc: */
1354 drm_framebuffer_unreference(plane->old_fb);
1355 plane->old_fb = NULL;
1359 EXPORT_SYMBOL(drm_plane_force_disable);
1361 static int drm_mode_create_standard_properties(struct drm_device *dev)
1363 struct drm_property *prop;
1366 * Standard properties (apply to all connectors)
1368 prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1369 DRM_MODE_PROP_IMMUTABLE,
1373 dev->mode_config.edid_property = prop;
1375 prop = drm_property_create_enum(dev, 0,
1376 "DPMS", drm_dpms_enum_list,
1377 ARRAY_SIZE(drm_dpms_enum_list));
1380 dev->mode_config.dpms_property = prop;
1382 prop = drm_property_create(dev,
1383 DRM_MODE_PROP_BLOB |
1384 DRM_MODE_PROP_IMMUTABLE,
1388 dev->mode_config.path_property = prop;
1390 prop = drm_property_create(dev,
1391 DRM_MODE_PROP_BLOB |
1392 DRM_MODE_PROP_IMMUTABLE,
1396 dev->mode_config.tile_property = prop;
1398 prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1399 "type", drm_plane_type_enum_list,
1400 ARRAY_SIZE(drm_plane_type_enum_list));
1403 dev->mode_config.plane_type_property = prop;
1405 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1406 "SRC_X", 0, UINT_MAX);
1409 dev->mode_config.prop_src_x = prop;
1411 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1412 "SRC_Y", 0, UINT_MAX);
1415 dev->mode_config.prop_src_y = prop;
1417 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1418 "SRC_W", 0, UINT_MAX);
1421 dev->mode_config.prop_src_w = prop;
1423 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1424 "SRC_H", 0, UINT_MAX);
1427 dev->mode_config.prop_src_h = prop;
1429 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1430 "CRTC_X", INT_MIN, INT_MAX);
1433 dev->mode_config.prop_crtc_x = prop;
1435 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1436 "CRTC_Y", INT_MIN, INT_MAX);
1439 dev->mode_config.prop_crtc_y = prop;
1441 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1442 "CRTC_W", 0, INT_MAX);
1445 dev->mode_config.prop_crtc_w = prop;
1447 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1448 "CRTC_H", 0, INT_MAX);
1451 dev->mode_config.prop_crtc_h = prop;
1453 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1454 "FB_ID", DRM_MODE_OBJECT_FB);
1457 dev->mode_config.prop_fb_id = prop;
1459 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1460 "CRTC_ID", DRM_MODE_OBJECT_CRTC);
1463 dev->mode_config.prop_crtc_id = prop;
1465 prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
1469 dev->mode_config.prop_active = prop;
1471 prop = drm_property_create(dev,
1472 DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB,
1476 dev->mode_config.prop_mode_id = prop;
1482 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1485 * Called by a driver the first time a DVI-I connector is made.
1487 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1489 struct drm_property *dvi_i_selector;
1490 struct drm_property *dvi_i_subconnector;
1492 if (dev->mode_config.dvi_i_select_subconnector_property)
1496 drm_property_create_enum(dev, 0,
1497 "select subconnector",
1498 drm_dvi_i_select_enum_list,
1499 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1500 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1502 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1504 drm_dvi_i_subconnector_enum_list,
1505 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1506 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1510 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1513 * drm_create_tv_properties - create TV specific connector properties
1515 * @num_modes: number of different TV formats (modes) supported
1516 * @modes: array of pointers to strings containing name of each format
1518 * Called by a driver's TV initialization routine, this function creates
1519 * the TV specific connector properties for a given device. Caller is
1520 * responsible for allocating a list of format names and passing them to
1523 int drm_mode_create_tv_properties(struct drm_device *dev,
1524 unsigned int num_modes,
1525 const char * const modes[])
1527 struct drm_property *tv_selector;
1528 struct drm_property *tv_subconnector;
1531 if (dev->mode_config.tv_select_subconnector_property)
1535 * Basic connector properties
1537 tv_selector = drm_property_create_enum(dev, 0,
1538 "select subconnector",
1539 drm_tv_select_enum_list,
1540 ARRAY_SIZE(drm_tv_select_enum_list));
1544 dev->mode_config.tv_select_subconnector_property = tv_selector;
1547 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1549 drm_tv_subconnector_enum_list,
1550 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1551 if (!tv_subconnector)
1553 dev->mode_config.tv_subconnector_property = tv_subconnector;
1556 * Other, TV specific properties: margins & TV modes.
1558 dev->mode_config.tv_left_margin_property =
1559 drm_property_create_range(dev, 0, "left margin", 0, 100);
1560 if (!dev->mode_config.tv_left_margin_property)
1563 dev->mode_config.tv_right_margin_property =
1564 drm_property_create_range(dev, 0, "right margin", 0, 100);
1565 if (!dev->mode_config.tv_right_margin_property)
1568 dev->mode_config.tv_top_margin_property =
1569 drm_property_create_range(dev, 0, "top margin", 0, 100);
1570 if (!dev->mode_config.tv_top_margin_property)
1573 dev->mode_config.tv_bottom_margin_property =
1574 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1575 if (!dev->mode_config.tv_bottom_margin_property)
1578 dev->mode_config.tv_mode_property =
1579 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1581 if (!dev->mode_config.tv_mode_property)
1584 for (i = 0; i < num_modes; i++)
1585 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1588 dev->mode_config.tv_brightness_property =
1589 drm_property_create_range(dev, 0, "brightness", 0, 100);
1590 if (!dev->mode_config.tv_brightness_property)
1593 dev->mode_config.tv_contrast_property =
1594 drm_property_create_range(dev, 0, "contrast", 0, 100);
1595 if (!dev->mode_config.tv_contrast_property)
1598 dev->mode_config.tv_flicker_reduction_property =
1599 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1600 if (!dev->mode_config.tv_flicker_reduction_property)
1603 dev->mode_config.tv_overscan_property =
1604 drm_property_create_range(dev, 0, "overscan", 0, 100);
1605 if (!dev->mode_config.tv_overscan_property)
1608 dev->mode_config.tv_saturation_property =
1609 drm_property_create_range(dev, 0, "saturation", 0, 100);
1610 if (!dev->mode_config.tv_saturation_property)
1613 dev->mode_config.tv_hue_property =
1614 drm_property_create_range(dev, 0, "hue", 0, 100);
1615 if (!dev->mode_config.tv_hue_property)
1622 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1625 * drm_mode_create_scaling_mode_property - create scaling mode property
1628 * Called by a driver the first time it's needed, must be attached to desired
1631 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1633 struct drm_property *scaling_mode;
1635 if (dev->mode_config.scaling_mode_property)
1639 drm_property_create_enum(dev, 0, "scaling mode",
1640 drm_scaling_mode_enum_list,
1641 ARRAY_SIZE(drm_scaling_mode_enum_list));
1643 dev->mode_config.scaling_mode_property = scaling_mode;
1647 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1650 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1653 * Called by a driver the first time it's needed, must be attached to desired
1657 * Zero on success, negative errno on failure.
1659 int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1661 if (dev->mode_config.aspect_ratio_property)
1664 dev->mode_config.aspect_ratio_property =
1665 drm_property_create_enum(dev, 0, "aspect ratio",
1666 drm_aspect_ratio_enum_list,
1667 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1669 if (dev->mode_config.aspect_ratio_property == NULL)
1674 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1677 * drm_mode_create_dirty_property - create dirty property
1680 * Called by a driver the first time it's needed, must be attached to desired
1683 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1685 struct drm_property *dirty_info;
1687 if (dev->mode_config.dirty_info_property)
1691 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1693 drm_dirty_info_enum_list,
1694 ARRAY_SIZE(drm_dirty_info_enum_list));
1695 dev->mode_config.dirty_info_property = dirty_info;
1699 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1702 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1705 * Create the the suggested x/y offset property for connectors.
1707 int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1709 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1712 dev->mode_config.suggested_x_property =
1713 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1715 dev->mode_config.suggested_y_property =
1716 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1718 if (dev->mode_config.suggested_x_property == NULL ||
1719 dev->mode_config.suggested_y_property == NULL)
1723 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1726 * drm_mode_getresources - get graphics configuration
1727 * @dev: drm device for the ioctl
1728 * @data: data pointer for the ioctl
1729 * @file_priv: drm file for the ioctl call
1731 * Construct a set of configuration description structures and return
1732 * them to the user, including CRTC, connector and framebuffer configuration.
1734 * Called by the user via ioctl.
1737 * Zero on success, negative errno on failure.
1739 int drm_mode_getresources(struct drm_device *dev, void *data,
1740 struct drm_file *file_priv)
1742 struct drm_mode_card_res *card_res = data;
1743 struct list_head *lh;
1744 struct drm_framebuffer *fb;
1745 struct drm_connector *connector;
1746 struct drm_crtc *crtc;
1747 struct drm_encoder *encoder;
1749 int connector_count = 0;
1752 int encoder_count = 0;
1754 uint32_t __user *fb_id;
1755 uint32_t __user *crtc_id;
1756 uint32_t __user *connector_id;
1757 uint32_t __user *encoder_id;
1759 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1763 mutex_lock(&file_priv->fbs_lock);
1765 * For the non-control nodes we need to limit the list of resources
1766 * by IDs in the group list for this node
1768 list_for_each(lh, &file_priv->fbs)
1771 /* handle this in 4 parts */
1773 if (card_res->count_fbs >= fb_count) {
1775 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1776 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1777 if (put_user(fb->base.id, fb_id + copied)) {
1778 mutex_unlock(&file_priv->fbs_lock);
1784 card_res->count_fbs = fb_count;
1785 mutex_unlock(&file_priv->fbs_lock);
1787 /* mode_config.mutex protects the connector list against e.g. DP MST
1788 * connector hot-adding. CRTC/Plane lists are invariant. */
1789 mutex_lock(&dev->mode_config.mutex);
1790 drm_for_each_crtc(crtc, dev)
1793 drm_for_each_connector(connector, dev)
1796 drm_for_each_encoder(encoder, dev)
1799 card_res->max_height = dev->mode_config.max_height;
1800 card_res->min_height = dev->mode_config.min_height;
1801 card_res->max_width = dev->mode_config.max_width;
1802 card_res->min_width = dev->mode_config.min_width;
1805 if (card_res->count_crtcs >= crtc_count) {
1807 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1808 drm_for_each_crtc(crtc, dev) {
1809 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1810 if (put_user(crtc->base.id, crtc_id + copied)) {
1817 card_res->count_crtcs = crtc_count;
1820 if (card_res->count_encoders >= encoder_count) {
1822 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1823 drm_for_each_encoder(encoder, dev) {
1824 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1826 if (put_user(encoder->base.id, encoder_id +
1834 card_res->count_encoders = encoder_count;
1837 if (card_res->count_connectors >= connector_count) {
1839 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1840 drm_for_each_connector(connector, dev) {
1841 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1844 if (put_user(connector->base.id,
1845 connector_id + copied)) {
1852 card_res->count_connectors = connector_count;
1854 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1855 card_res->count_connectors, card_res->count_encoders);
1858 mutex_unlock(&dev->mode_config.mutex);
1863 * drm_mode_getcrtc - get CRTC configuration
1864 * @dev: drm device for the ioctl
1865 * @data: data pointer for the ioctl
1866 * @file_priv: drm file for the ioctl call
1868 * Construct a CRTC configuration structure to return to the user.
1870 * Called by the user via ioctl.
1873 * Zero on success, negative errno on failure.
1875 int drm_mode_getcrtc(struct drm_device *dev,
1876 void *data, struct drm_file *file_priv)
1878 struct drm_mode_crtc *crtc_resp = data;
1879 struct drm_crtc *crtc;
1881 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1884 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
1888 drm_modeset_lock_crtc(crtc, crtc->primary);
1889 crtc_resp->gamma_size = crtc->gamma_size;
1890 if (crtc->primary->fb)
1891 crtc_resp->fb_id = crtc->primary->fb->base.id;
1893 crtc_resp->fb_id = 0;
1896 crtc_resp->x = crtc->primary->state->src_x >> 16;
1897 crtc_resp->y = crtc->primary->state->src_y >> 16;
1898 if (crtc->state->enable) {
1899 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode);
1900 crtc_resp->mode_valid = 1;
1903 crtc_resp->mode_valid = 0;
1906 crtc_resp->x = crtc->x;
1907 crtc_resp->y = crtc->y;
1908 if (crtc->enabled) {
1909 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1910 crtc_resp->mode_valid = 1;
1913 crtc_resp->mode_valid = 0;
1916 drm_modeset_unlock_crtc(crtc);
1921 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1922 const struct drm_file *file_priv)
1925 * If user-space hasn't configured the driver to expose the stereo 3D
1926 * modes, don't expose them.
1928 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1934 static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
1936 /* For atomic drivers only state objects are synchronously updated and
1937 * protected by modeset locks, so check those first. */
1938 if (connector->state)
1939 return connector->state->best_encoder;
1940 return connector->encoder;
1943 /* helper for getconnector and getproperties ioctls */
1944 static int get_properties(struct drm_mode_object *obj, bool atomic,
1945 uint32_t __user *prop_ptr, uint64_t __user *prop_values,
1946 uint32_t *arg_count_props)
1951 props_count = obj->properties->count;
1953 props_count -= obj->properties->atomic_count;
1955 if ((*arg_count_props >= props_count) && props_count) {
1956 for (i = 0, copied = 0; copied < props_count; i++) {
1957 struct drm_property *prop = obj->properties->properties[i];
1960 if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
1963 ret = drm_object_property_get_value(obj, prop, &val);
1967 if (put_user(prop->base.id, prop_ptr + copied))
1970 if (put_user(val, prop_values + copied))
1976 *arg_count_props = props_count;
1982 * drm_mode_getconnector - get connector configuration
1983 * @dev: drm device for the ioctl
1984 * @data: data pointer for the ioctl
1985 * @file_priv: drm file for the ioctl call
1987 * Construct a connector configuration structure to return to the user.
1989 * Called by the user via ioctl.
1992 * Zero on success, negative errno on failure.
1994 int drm_mode_getconnector(struct drm_device *dev, void *data,
1995 struct drm_file *file_priv)
1997 struct drm_mode_get_connector *out_resp = data;
1998 struct drm_connector *connector;
1999 struct drm_encoder *encoder;
2000 struct drm_display_mode *mode;
2002 int encoders_count = 0;
2006 struct drm_mode_modeinfo u_mode;
2007 struct drm_mode_modeinfo __user *mode_ptr;
2008 uint32_t __user *encoder_ptr;
2010 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2013 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
2015 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
2017 mutex_lock(&dev->mode_config.mutex);
2019 connector = drm_connector_find(dev, out_resp->connector_id);
2025 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
2026 if (connector->encoder_ids[i] != 0)
2029 if (out_resp->count_modes == 0) {
2030 connector->funcs->fill_modes(connector,
2031 dev->mode_config.max_width,
2032 dev->mode_config.max_height);
2035 /* delayed so we get modes regardless of pre-fill_modes state */
2036 list_for_each_entry(mode, &connector->modes, head)
2037 if (drm_mode_expose_to_userspace(mode, file_priv))
2040 out_resp->connector_id = connector->base.id;
2041 out_resp->connector_type = connector->connector_type;
2042 out_resp->connector_type_id = connector->connector_type_id;
2043 out_resp->mm_width = connector->display_info.width_mm;
2044 out_resp->mm_height = connector->display_info.height_mm;
2045 out_resp->subpixel = connector->display_info.subpixel_order;
2046 out_resp->connection = connector->status;
2048 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2049 encoder = drm_connector_get_encoder(connector);
2051 out_resp->encoder_id = encoder->base.id;
2053 out_resp->encoder_id = 0;
2056 * This ioctl is called twice, once to determine how much space is
2057 * needed, and the 2nd time to fill it.
2059 if ((out_resp->count_modes >= mode_count) && mode_count) {
2061 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
2062 list_for_each_entry(mode, &connector->modes, head) {
2063 if (!drm_mode_expose_to_userspace(mode, file_priv))
2066 drm_mode_convert_to_umode(&u_mode, mode);
2067 if (copy_to_user(mode_ptr + copied,
2068 &u_mode, sizeof(u_mode))) {
2075 out_resp->count_modes = mode_count;
2077 ret = get_properties(&connector->base, file_priv->atomic,
2078 (uint32_t __user *)(unsigned long)(out_resp->props_ptr),
2079 (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr),
2080 &out_resp->count_props);
2084 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2086 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
2087 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2088 if (connector->encoder_ids[i] != 0) {
2089 if (put_user(connector->encoder_ids[i],
2090 encoder_ptr + copied)) {
2098 out_resp->count_encoders = encoders_count;
2101 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2104 mutex_unlock(&dev->mode_config.mutex);
2109 static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2111 struct drm_connector *connector;
2112 struct drm_device *dev = encoder->dev;
2113 bool uses_atomic = false;
2115 /* For atomic drivers only state objects are synchronously updated and
2116 * protected by modeset locks, so check those first. */
2117 drm_for_each_connector(connector, dev) {
2118 if (!connector->state)
2123 if (connector->state->best_encoder != encoder)
2126 return connector->state->crtc;
2129 /* Don't return stale data (e.g. pending async disable). */
2133 return encoder->crtc;
2137 * drm_mode_getencoder - get encoder configuration
2138 * @dev: drm device for the ioctl
2139 * @data: data pointer for the ioctl
2140 * @file_priv: drm file for the ioctl call
2142 * Construct a encoder configuration structure to return to the user.
2144 * Called by the user via ioctl.
2147 * Zero on success, negative errno on failure.
2149 int drm_mode_getencoder(struct drm_device *dev, void *data,
2150 struct drm_file *file_priv)
2152 struct drm_mode_get_encoder *enc_resp = data;
2153 struct drm_encoder *encoder;
2154 struct drm_crtc *crtc;
2156 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2159 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
2163 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2164 crtc = drm_encoder_get_crtc(encoder);
2166 enc_resp->crtc_id = crtc->base.id;
2168 enc_resp->crtc_id = 0;
2169 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2171 enc_resp->encoder_type = encoder->encoder_type;
2172 enc_resp->encoder_id = encoder->base.id;
2173 enc_resp->possible_crtcs = encoder->possible_crtcs;
2174 enc_resp->possible_clones = encoder->possible_clones;
2180 * drm_mode_getplane_res - enumerate all plane resources
2183 * @file_priv: DRM file info
2185 * Construct a list of plane ids to return to the user.
2187 * Called by the user via ioctl.
2190 * Zero on success, negative errno on failure.
2192 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2193 struct drm_file *file_priv)
2195 struct drm_mode_get_plane_res *plane_resp = data;
2196 struct drm_mode_config *config;
2197 struct drm_plane *plane;
2198 uint32_t __user *plane_ptr;
2200 unsigned num_planes;
2202 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2205 config = &dev->mode_config;
2207 if (file_priv->universal_planes)
2208 num_planes = config->num_total_plane;
2210 num_planes = config->num_overlay_plane;
2213 * This ioctl is called twice, once to determine how much space is
2214 * needed, and the 2nd time to fill it.
2217 (plane_resp->count_planes >= num_planes)) {
2218 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2220 /* Plane lists are invariant, no locking needed. */
2221 drm_for_each_plane(plane, dev) {
2223 * Unless userspace set the 'universal planes'
2224 * capability bit, only advertise overlays.
2226 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2227 !file_priv->universal_planes)
2230 if (put_user(plane->base.id, plane_ptr + copied))
2235 plane_resp->count_planes = num_planes;
2241 * drm_mode_getplane - get plane configuration
2244 * @file_priv: DRM file info
2246 * Construct a plane configuration structure to return to the user.
2248 * Called by the user via ioctl.
2251 * Zero on success, negative errno on failure.
2253 int drm_mode_getplane(struct drm_device *dev, void *data,
2254 struct drm_file *file_priv)
2256 struct drm_mode_get_plane *plane_resp = data;
2257 struct drm_plane *plane;
2258 uint32_t __user *format_ptr;
2260 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2263 plane = drm_plane_find(dev, plane_resp->plane_id);
2267 drm_modeset_lock(&plane->mutex, NULL);
2269 plane_resp->crtc_id = plane->crtc->base.id;
2271 plane_resp->crtc_id = 0;
2274 plane_resp->fb_id = plane->fb->base.id;
2276 plane_resp->fb_id = 0;
2277 drm_modeset_unlock(&plane->mutex);
2279 plane_resp->plane_id = plane->base.id;
2280 plane_resp->possible_crtcs = plane->possible_crtcs;
2281 plane_resp->gamma_size = 0;
2284 * This ioctl is called twice, once to determine how much space is
2285 * needed, and the 2nd time to fill it.
2287 if (plane->format_count &&
2288 (plane_resp->count_format_types >= plane->format_count)) {
2289 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2290 if (copy_to_user(format_ptr,
2291 plane->format_types,
2292 sizeof(uint32_t) * plane->format_count)) {
2296 plane_resp->count_format_types = plane->format_count;
2302 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2303 * @plane: plane to check for format support
2304 * @format: the pixel format
2307 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2310 int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format)
2314 for (i = 0; i < plane->format_count; i++) {
2315 if (format == plane->format_types[i])
2322 static int check_src_coords(uint32_t src_x, uint32_t src_y,
2323 uint32_t src_w, uint32_t src_h,
2324 const struct drm_framebuffer *fb)
2326 unsigned int fb_width, fb_height;
2328 fb_width = fb->width << 16;
2329 fb_height = fb->height << 16;
2331 /* Make sure source coordinates are inside the fb. */
2332 if (src_w > fb_width ||
2333 src_x > fb_width - src_w ||
2334 src_h > fb_height ||
2335 src_y > fb_height - src_h) {
2336 DRM_DEBUG_KMS("Invalid source coordinates "
2337 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2338 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2339 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2340 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2341 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2349 * setplane_internal - setplane handler for internal callers
2351 * Note that we assume an extra reference has already been taken on fb. If the
2352 * update fails, this reference will be dropped before return; if it succeeds,
2353 * the previous framebuffer (if any) will be unreferenced instead.
2355 * src_{x,y,w,h} are provided in 16.16 fixed point format
2357 static int __setplane_internal(struct drm_plane *plane,
2358 struct drm_crtc *crtc,
2359 struct drm_framebuffer *fb,
2360 int32_t crtc_x, int32_t crtc_y,
2361 uint32_t crtc_w, uint32_t crtc_h,
2362 /* src_{x,y,w,h} values are 16.16 fixed point */
2363 uint32_t src_x, uint32_t src_y,
2364 uint32_t src_w, uint32_t src_h)
2368 /* No fb means shut it down */
2370 plane->old_fb = plane->fb;
2371 ret = plane->funcs->disable_plane(plane);
2376 plane->old_fb = NULL;
2381 /* Check whether this plane is usable on this CRTC */
2382 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2383 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2388 /* Check whether this plane supports the fb pixel format. */
2389 ret = drm_plane_check_pixel_format(plane, fb->pixel_format);
2391 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2392 drm_get_format_name(fb->pixel_format));
2396 /* Give drivers some help against integer overflows */
2397 if (crtc_w > INT_MAX ||
2398 crtc_x > INT_MAX - (int32_t) crtc_w ||
2400 crtc_y > INT_MAX - (int32_t) crtc_h) {
2401 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2402 crtc_w, crtc_h, crtc_x, crtc_y);
2407 ret = check_src_coords(src_x, src_y, src_w, src_h, fb);
2411 plane->old_fb = plane->fb;
2412 ret = plane->funcs->update_plane(plane, crtc, fb,
2413 crtc_x, crtc_y, crtc_w, crtc_h,
2414 src_x, src_y, src_w, src_h);
2420 plane->old_fb = NULL;
2425 drm_framebuffer_unreference(fb);
2427 drm_framebuffer_unreference(plane->old_fb);
2428 plane->old_fb = NULL;
2433 static int setplane_internal(struct drm_plane *plane,
2434 struct drm_crtc *crtc,
2435 struct drm_framebuffer *fb,
2436 int32_t crtc_x, int32_t crtc_y,
2437 uint32_t crtc_w, uint32_t crtc_h,
2438 /* src_{x,y,w,h} values are 16.16 fixed point */
2439 uint32_t src_x, uint32_t src_y,
2440 uint32_t src_w, uint32_t src_h)
2444 drm_modeset_lock_all(plane->dev);
2445 ret = __setplane_internal(plane, crtc, fb,
2446 crtc_x, crtc_y, crtc_w, crtc_h,
2447 src_x, src_y, src_w, src_h);
2448 drm_modeset_unlock_all(plane->dev);
2454 * drm_mode_setplane - configure a plane's configuration
2456 * @data: ioctl data*
2457 * @file_priv: DRM file info
2459 * Set plane configuration, including placement, fb, scaling, and other factors.
2460 * Or pass a NULL fb to disable (planes may be disabled without providing a
2464 * Zero on success, negative errno on failure.
2466 int drm_mode_setplane(struct drm_device *dev, void *data,
2467 struct drm_file *file_priv)
2469 struct drm_mode_set_plane *plane_req = data;
2470 struct drm_plane *plane;
2471 struct drm_crtc *crtc = NULL;
2472 struct drm_framebuffer *fb = NULL;
2474 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2478 * First, find the plane, crtc, and fb objects. If not available,
2479 * we don't bother to call the driver.
2481 plane = drm_plane_find(dev, plane_req->plane_id);
2483 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2484 plane_req->plane_id);
2488 if (plane_req->fb_id) {
2489 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2491 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2496 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2498 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2499 plane_req->crtc_id);
2505 * setplane_internal will take care of deref'ing either the old or new
2506 * framebuffer depending on success.
2508 return setplane_internal(plane, crtc, fb,
2509 plane_req->crtc_x, plane_req->crtc_y,
2510 plane_req->crtc_w, plane_req->crtc_h,
2511 plane_req->src_x, plane_req->src_y,
2512 plane_req->src_w, plane_req->src_h);
2516 * drm_mode_set_config_internal - helper to call ->set_config
2517 * @set: modeset config to set
2519 * This is a little helper to wrap internal calls to the ->set_config driver
2520 * interface. The only thing it adds is correct refcounting dance.
2523 * Zero on success, negative errno on failure.
2525 int drm_mode_set_config_internal(struct drm_mode_set *set)
2527 struct drm_crtc *crtc = set->crtc;
2528 struct drm_framebuffer *fb;
2529 struct drm_crtc *tmp;
2533 * NOTE: ->set_config can also disable other crtcs (if we steal all
2534 * connectors from it), hence we need to refcount the fbs across all
2535 * crtcs. Atomic modeset will have saner semantics ...
2537 drm_for_each_crtc(tmp, crtc->dev)
2538 tmp->primary->old_fb = tmp->primary->fb;
2542 ret = crtc->funcs->set_config(set);
2544 crtc->primary->crtc = crtc;
2545 crtc->primary->fb = fb;
2548 drm_for_each_crtc(tmp, crtc->dev) {
2549 if (tmp->primary->fb)
2550 drm_framebuffer_reference(tmp->primary->fb);
2551 if (tmp->primary->old_fb)
2552 drm_framebuffer_unreference(tmp->primary->old_fb);
2553 tmp->primary->old_fb = NULL;
2558 EXPORT_SYMBOL(drm_mode_set_config_internal);
2561 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2562 * @mode: mode to query
2563 * @hdisplay: hdisplay value to fill in
2564 * @vdisplay: vdisplay value to fill in
2566 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2567 * the appropriate layout.
2569 void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
2570 int *hdisplay, int *vdisplay)
2572 struct drm_display_mode adjusted;
2574 drm_mode_copy(&adjusted, mode);
2575 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
2576 *hdisplay = adjusted.crtc_hdisplay;
2577 *vdisplay = adjusted.crtc_vdisplay;
2579 EXPORT_SYMBOL(drm_crtc_get_hv_timing);
2582 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2584 * @crtc: CRTC that framebuffer will be displayed on
2587 * @mode: mode that framebuffer will be displayed under
2588 * @fb: framebuffer to check size of
2590 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2592 const struct drm_display_mode *mode,
2593 const struct drm_framebuffer *fb)
2596 int hdisplay, vdisplay;
2598 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
2601 crtc->primary->state->rotation & (BIT(DRM_ROTATE_90) |
2602 BIT(DRM_ROTATE_270)))
2603 swap(hdisplay, vdisplay);
2605 return check_src_coords(x << 16, y << 16,
2606 hdisplay << 16, vdisplay << 16, fb);
2608 EXPORT_SYMBOL(drm_crtc_check_viewport);
2611 * drm_mode_setcrtc - set CRTC configuration
2612 * @dev: drm device for the ioctl
2613 * @data: data pointer for the ioctl
2614 * @file_priv: drm file for the ioctl call
2616 * Build a new CRTC configuration based on user request.
2618 * Called by the user via ioctl.
2621 * Zero on success, negative errno on failure.
2623 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2624 struct drm_file *file_priv)
2626 struct drm_mode_config *config = &dev->mode_config;
2627 struct drm_mode_crtc *crtc_req = data;
2628 struct drm_crtc *crtc;
2629 struct drm_connector **connector_set = NULL, *connector;
2630 struct drm_framebuffer *fb = NULL;
2631 struct drm_display_mode *mode = NULL;
2632 struct drm_mode_set set;
2633 uint32_t __user *set_connectors_ptr;
2637 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2641 * Universal plane src offsets are only 16.16, prevent havoc for
2642 * drivers using universal plane code internally.
2644 if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000)
2647 drm_modeset_lock_all(dev);
2648 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2650 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2654 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2656 if (crtc_req->mode_valid) {
2657 /* If we have a mode we need a framebuffer. */
2658 /* If we pass -1, set the mode with the currently bound fb */
2659 if (crtc_req->fb_id == -1) {
2660 if (!crtc->primary->fb) {
2661 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2665 fb = crtc->primary->fb;
2666 /* Make refcounting symmetric with the lookup path. */
2667 drm_framebuffer_reference(fb);
2669 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2671 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2678 mode = drm_mode_create(dev);
2684 ret = drm_mode_convert_umode(mode, &crtc_req->mode);
2686 DRM_DEBUG_KMS("Invalid mode\n");
2690 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2693 * Check whether the primary plane supports the fb pixel format.
2694 * Drivers not implementing the universal planes API use a
2695 * default formats list provided by the DRM core which doesn't
2696 * match real hardware capabilities. Skip the check in that
2699 if (!crtc->primary->format_default) {
2700 ret = drm_plane_check_pixel_format(crtc->primary,
2703 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2704 drm_get_format_name(fb->pixel_format));
2709 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2716 if (crtc_req->count_connectors == 0 && mode) {
2717 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2722 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2723 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2724 crtc_req->count_connectors);
2729 if (crtc_req->count_connectors > 0) {
2732 /* Avoid unbounded kernel memory allocation */
2733 if (crtc_req->count_connectors > config->num_connector) {
2738 connector_set = kmalloc_array(crtc_req->count_connectors,
2739 sizeof(struct drm_connector *),
2741 if (!connector_set) {
2746 for (i = 0; i < crtc_req->count_connectors; i++) {
2747 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2748 if (get_user(out_id, &set_connectors_ptr[i])) {
2753 connector = drm_connector_find(dev, out_id);
2755 DRM_DEBUG_KMS("Connector id %d unknown\n",
2760 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2764 connector_set[i] = connector;
2769 set.x = crtc_req->x;
2770 set.y = crtc_req->y;
2772 set.connectors = connector_set;
2773 set.num_connectors = crtc_req->count_connectors;
2775 ret = drm_mode_set_config_internal(&set);
2779 drm_framebuffer_unreference(fb);
2781 kfree(connector_set);
2782 drm_mode_destroy(dev, mode);
2783 drm_modeset_unlock_all(dev);
2788 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2789 * universal plane handler call
2790 * @crtc: crtc to update cursor for
2791 * @req: data pointer for the ioctl
2792 * @file_priv: drm file for the ioctl call
2794 * Legacy cursor ioctl's work directly with driver buffer handles. To
2795 * translate legacy ioctl calls into universal plane handler calls, we need to
2796 * wrap the native buffer handle in a drm_framebuffer.
2798 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2799 * buffer with a pitch of 4*width; the universal plane interface should be used
2800 * directly in cases where the hardware can support other buffer settings and
2801 * userspace wants to make use of these capabilities.
2804 * Zero on success, negative errno on failure.
2806 static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2807 struct drm_mode_cursor2 *req,
2808 struct drm_file *file_priv)
2810 struct drm_device *dev = crtc->dev;
2811 struct drm_framebuffer *fb = NULL;
2812 struct drm_mode_fb_cmd2 fbreq = {
2813 .width = req->width,
2814 .height = req->height,
2815 .pixel_format = DRM_FORMAT_ARGB8888,
2816 .pitches = { req->width * 4 },
2817 .handles = { req->handle },
2819 int32_t crtc_x, crtc_y;
2820 uint32_t crtc_w = 0, crtc_h = 0;
2821 uint32_t src_w = 0, src_h = 0;
2824 BUG_ON(!crtc->cursor);
2825 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
2828 * Obtain fb we'll be using (either new or existing) and take an extra
2829 * reference to it if fb != null. setplane will take care of dropping
2830 * the reference if the plane update fails.
2832 if (req->flags & DRM_MODE_CURSOR_BO) {
2834 fb = internal_framebuffer_create(dev, &fbreq, file_priv);
2836 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2843 fb = crtc->cursor->fb;
2845 drm_framebuffer_reference(fb);
2848 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2852 crtc_x = crtc->cursor_x;
2853 crtc_y = crtc->cursor_y;
2858 crtc_h = fb->height;
2859 src_w = fb->width << 16;
2860 src_h = fb->height << 16;
2864 * setplane_internal will take care of deref'ing either the old or new
2865 * framebuffer depending on success.
2867 ret = __setplane_internal(crtc->cursor, crtc, fb,
2868 crtc_x, crtc_y, crtc_w, crtc_h,
2869 0, 0, src_w, src_h);
2871 /* Update successful; save new cursor position, if necessary */
2872 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2873 crtc->cursor_x = req->x;
2874 crtc->cursor_y = req->y;
2880 static int drm_mode_cursor_common(struct drm_device *dev,
2881 struct drm_mode_cursor2 *req,
2882 struct drm_file *file_priv)
2884 struct drm_crtc *crtc;
2887 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2890 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2893 crtc = drm_crtc_find(dev, req->crtc_id);
2895 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2900 * If this crtc has a universal cursor plane, call that plane's update
2901 * handler rather than using legacy cursor handlers.
2903 drm_modeset_lock_crtc(crtc, crtc->cursor);
2905 ret = drm_mode_cursor_universal(crtc, req, file_priv);
2909 if (req->flags & DRM_MODE_CURSOR_BO) {
2910 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
2914 /* Turns off the cursor if handle is 0 */
2915 if (crtc->funcs->cursor_set2)
2916 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2917 req->width, req->height, req->hot_x, req->hot_y);
2919 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2920 req->width, req->height);
2923 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2924 if (crtc->funcs->cursor_move) {
2925 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2932 drm_modeset_unlock_crtc(crtc);
2940 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2941 * @dev: drm device for the ioctl
2942 * @data: data pointer for the ioctl
2943 * @file_priv: drm file for the ioctl call
2945 * Set the cursor configuration based on user request.
2947 * Called by the user via ioctl.
2950 * Zero on success, negative errno on failure.
2952 int drm_mode_cursor_ioctl(struct drm_device *dev,
2953 void *data, struct drm_file *file_priv)
2955 struct drm_mode_cursor *req = data;
2956 struct drm_mode_cursor2 new_req;
2958 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2959 new_req.hot_x = new_req.hot_y = 0;
2961 return drm_mode_cursor_common(dev, &new_req, file_priv);
2965 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2966 * @dev: drm device for the ioctl
2967 * @data: data pointer for the ioctl
2968 * @file_priv: drm file for the ioctl call
2970 * Set the cursor configuration based on user request. This implements the 2nd
2971 * version of the cursor ioctl, which allows userspace to additionally specify
2972 * the hotspot of the pointer.
2974 * Called by the user via ioctl.
2977 * Zero on success, negative errno on failure.
2979 int drm_mode_cursor2_ioctl(struct drm_device *dev,
2980 void *data, struct drm_file *file_priv)
2982 struct drm_mode_cursor2 *req = data;
2984 return drm_mode_cursor_common(dev, req, file_priv);
2988 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2989 * @bpp: bits per pixels
2990 * @depth: bit depth per pixel
2992 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2993 * Useful in fbdev emulation code, since that deals in those values.
2995 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
3001 fmt = DRM_FORMAT_C8;
3005 fmt = DRM_FORMAT_XRGB1555;
3007 fmt = DRM_FORMAT_RGB565;
3010 fmt = DRM_FORMAT_RGB888;
3014 fmt = DRM_FORMAT_XRGB8888;
3015 else if (depth == 30)
3016 fmt = DRM_FORMAT_XRGB2101010;
3018 fmt = DRM_FORMAT_ARGB8888;
3021 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3022 fmt = DRM_FORMAT_XRGB8888;
3028 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3031 * drm_mode_addfb - add an FB to the graphics configuration
3032 * @dev: drm device for the ioctl
3033 * @data: data pointer for the ioctl
3034 * @file_priv: drm file for the ioctl call
3036 * Add a new FB to the specified CRTC, given a user request. This is the
3037 * original addfb ioctl which only supported RGB formats.
3039 * Called by the user via ioctl.
3042 * Zero on success, negative errno on failure.
3044 int drm_mode_addfb(struct drm_device *dev,
3045 void *data, struct drm_file *file_priv)
3047 struct drm_mode_fb_cmd *or = data;
3048 struct drm_mode_fb_cmd2 r = {};
3051 /* convert to new format and call new ioctl */
3052 r.fb_id = or->fb_id;
3053 r.width = or->width;
3054 r.height = or->height;
3055 r.pitches[0] = or->pitch;
3056 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3057 r.handles[0] = or->handle;
3059 ret = drm_mode_addfb2(dev, &r, file_priv);
3063 or->fb_id = r.fb_id;
3068 static int format_check(const struct drm_mode_fb_cmd2 *r)
3070 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3074 case DRM_FORMAT_RGB332:
3075 case DRM_FORMAT_BGR233:
3076 case DRM_FORMAT_XRGB4444:
3077 case DRM_FORMAT_XBGR4444:
3078 case DRM_FORMAT_RGBX4444:
3079 case DRM_FORMAT_BGRX4444:
3080 case DRM_FORMAT_ARGB4444:
3081 case DRM_FORMAT_ABGR4444:
3082 case DRM_FORMAT_RGBA4444:
3083 case DRM_FORMAT_BGRA4444:
3084 case DRM_FORMAT_XRGB1555:
3085 case DRM_FORMAT_XBGR1555:
3086 case DRM_FORMAT_RGBX5551:
3087 case DRM_FORMAT_BGRX5551:
3088 case DRM_FORMAT_ARGB1555:
3089 case DRM_FORMAT_ABGR1555:
3090 case DRM_FORMAT_RGBA5551:
3091 case DRM_FORMAT_BGRA5551:
3092 case DRM_FORMAT_RGB565:
3093 case DRM_FORMAT_BGR565:
3094 case DRM_FORMAT_RGB888:
3095 case DRM_FORMAT_BGR888:
3096 case DRM_FORMAT_XRGB8888:
3097 case DRM_FORMAT_XBGR8888:
3098 case DRM_FORMAT_RGBX8888:
3099 case DRM_FORMAT_BGRX8888:
3100 case DRM_FORMAT_ARGB8888:
3101 case DRM_FORMAT_ABGR8888:
3102 case DRM_FORMAT_RGBA8888:
3103 case DRM_FORMAT_BGRA8888:
3104 case DRM_FORMAT_XRGB2101010:
3105 case DRM_FORMAT_XBGR2101010:
3106 case DRM_FORMAT_RGBX1010102:
3107 case DRM_FORMAT_BGRX1010102:
3108 case DRM_FORMAT_ARGB2101010:
3109 case DRM_FORMAT_ABGR2101010:
3110 case DRM_FORMAT_RGBA1010102:
3111 case DRM_FORMAT_BGRA1010102:
3112 case DRM_FORMAT_YUYV:
3113 case DRM_FORMAT_YVYU:
3114 case DRM_FORMAT_UYVY:
3115 case DRM_FORMAT_VYUY:
3116 case DRM_FORMAT_AYUV:
3117 case DRM_FORMAT_NV12:
3118 case DRM_FORMAT_NV21:
3119 case DRM_FORMAT_NV16:
3120 case DRM_FORMAT_NV61:
3121 case DRM_FORMAT_NV24:
3122 case DRM_FORMAT_NV42:
3123 case DRM_FORMAT_YUV410:
3124 case DRM_FORMAT_YVU410:
3125 case DRM_FORMAT_YUV411:
3126 case DRM_FORMAT_YVU411:
3127 case DRM_FORMAT_YUV420:
3128 case DRM_FORMAT_YVU420:
3129 case DRM_FORMAT_YUV422:
3130 case DRM_FORMAT_YVU422:
3131 case DRM_FORMAT_YUV444:
3132 case DRM_FORMAT_YVU444:
3135 DRM_DEBUG_KMS("invalid pixel format %s\n",
3136 drm_get_format_name(r->pixel_format));
3141 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
3143 int ret, hsub, vsub, num_planes, i;
3145 ret = format_check(r);
3147 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3148 drm_get_format_name(r->pixel_format));
3152 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3153 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3154 num_planes = drm_format_num_planes(r->pixel_format);
3156 if (r->width == 0 || r->width % hsub) {
3157 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
3161 if (r->height == 0 || r->height % vsub) {
3162 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
3166 for (i = 0; i < num_planes; i++) {
3167 unsigned int width = r->width / (i != 0 ? hsub : 1);
3168 unsigned int height = r->height / (i != 0 ? vsub : 1);
3169 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
3171 if (!r->handles[i]) {
3172 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
3176 if ((uint64_t) width * cpp > UINT_MAX)
3179 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3182 if (r->pitches[i] < width * cpp) {
3183 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
3187 if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
3188 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3193 /* modifier specific checks: */
3194 switch (r->modifier[i]) {
3195 case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE:
3196 /* NOTE: the pitch restriction may be lifted later if it turns
3197 * out that no hw has this restriction:
3199 if (r->pixel_format != DRM_FORMAT_NV12 ||
3200 width % 128 || height % 32 ||
3201 r->pitches[i] % 128) {
3202 DRM_DEBUG_KMS("bad modifier data for plane %d\n", i);
3212 for (i = num_planes; i < 4; i++) {
3213 if (r->modifier[i]) {
3214 DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i);
3218 /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
3219 if (!(r->flags & DRM_MODE_FB_MODIFIERS))
3222 if (r->handles[i]) {
3223 DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i);
3227 if (r->pitches[i]) {
3228 DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i);
3232 if (r->offsets[i]) {
3233 DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i);
3241 static struct drm_framebuffer *
3242 internal_framebuffer_create(struct drm_device *dev,
3243 struct drm_mode_fb_cmd2 *r,
3244 struct drm_file *file_priv)
3246 struct drm_mode_config *config = &dev->mode_config;
3247 struct drm_framebuffer *fb;
3250 if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
3251 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
3252 return ERR_PTR(-EINVAL);
3255 if ((config->min_width > r->width) || (r->width > config->max_width)) {
3256 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3257 r->width, config->min_width, config->max_width);
3258 return ERR_PTR(-EINVAL);
3260 if ((config->min_height > r->height) || (r->height > config->max_height)) {
3261 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3262 r->height, config->min_height, config->max_height);
3263 return ERR_PTR(-EINVAL);
3266 if (r->flags & DRM_MODE_FB_MODIFIERS &&
3267 !dev->mode_config.allow_fb_modifiers) {
3268 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3269 return ERR_PTR(-EINVAL);
3272 ret = framebuffer_check(r);
3274 return ERR_PTR(ret);
3276 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
3278 DRM_DEBUG_KMS("could not create framebuffer\n");
3286 * drm_mode_addfb2 - add an FB to the graphics configuration
3287 * @dev: drm device for the ioctl
3288 * @data: data pointer for the ioctl
3289 * @file_priv: drm file for the ioctl call
3291 * Add a new FB to the specified CRTC, given a user request with format. This is
3292 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3293 * and uses fourcc codes as pixel format specifiers.
3295 * Called by the user via ioctl.
3298 * Zero on success, negative errno on failure.
3300 int drm_mode_addfb2(struct drm_device *dev,
3301 void *data, struct drm_file *file_priv)
3303 struct drm_mode_fb_cmd2 *r = data;
3304 struct drm_framebuffer *fb;
3306 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3309 fb = internal_framebuffer_create(dev, r, file_priv);
3313 /* Transfer ownership to the filp for reaping on close */
3315 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3316 mutex_lock(&file_priv->fbs_lock);
3317 r->fb_id = fb->base.id;
3318 list_add(&fb->filp_head, &file_priv->fbs);
3319 mutex_unlock(&file_priv->fbs_lock);
3325 * drm_mode_rmfb - remove an FB from the configuration
3326 * @dev: drm device for the ioctl
3327 * @data: data pointer for the ioctl
3328 * @file_priv: drm file for the ioctl call
3330 * Remove the FB specified by the user.
3332 * Called by the user via ioctl.
3335 * Zero on success, negative errno on failure.
3337 int drm_mode_rmfb(struct drm_device *dev,
3338 void *data, struct drm_file *file_priv)
3340 struct drm_framebuffer *fb = NULL;
3341 struct drm_framebuffer *fbl = NULL;
3342 uint32_t *id = data;
3345 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3348 mutex_lock(&file_priv->fbs_lock);
3349 mutex_lock(&dev->mode_config.fb_lock);
3350 fb = __drm_framebuffer_lookup(dev, *id);
3354 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3360 list_del_init(&fb->filp_head);
3361 mutex_unlock(&dev->mode_config.fb_lock);
3362 mutex_unlock(&file_priv->fbs_lock);
3364 drm_framebuffer_unreference(fb);
3369 mutex_unlock(&dev->mode_config.fb_lock);
3370 mutex_unlock(&file_priv->fbs_lock);
3376 * drm_mode_getfb - get FB info
3377 * @dev: drm device for the ioctl
3378 * @data: data pointer for the ioctl
3379 * @file_priv: drm file for the ioctl call
3381 * Lookup the FB given its ID and return info about it.
3383 * Called by the user via ioctl.
3386 * Zero on success, negative errno on failure.
3388 int drm_mode_getfb(struct drm_device *dev,
3389 void *data, struct drm_file *file_priv)
3391 struct drm_mode_fb_cmd *r = data;
3392 struct drm_framebuffer *fb;
3395 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3398 fb = drm_framebuffer_lookup(dev, r->fb_id);
3402 r->height = fb->height;
3403 r->width = fb->width;
3404 r->depth = fb->depth;
3405 r->bpp = fb->bits_per_pixel;
3406 r->pitch = fb->pitches[0];
3407 if (fb->funcs->create_handle) {
3408 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
3409 drm_is_control_client(file_priv)) {
3410 ret = fb->funcs->create_handle(fb, file_priv,
3413 /* GET_FB() is an unprivileged ioctl so we must not
3414 * return a buffer-handle to non-master processes! For
3415 * backwards-compatibility reasons, we cannot make
3416 * GET_FB() privileged, so just return an invalid handle
3417 * for non-masters. */
3425 drm_framebuffer_unreference(fb);
3431 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3432 * @dev: drm device for the ioctl
3433 * @data: data pointer for the ioctl
3434 * @file_priv: drm file for the ioctl call
3436 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3437 * rectangle list. Generic userspace which does frontbuffer rendering must call
3438 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3439 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3441 * Modesetting drivers which always update the frontbuffer do not need to
3442 * implement the corresponding ->dirty framebuffer callback.
3444 * Called by the user via ioctl.
3447 * Zero on success, negative errno on failure.
3449 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3450 void *data, struct drm_file *file_priv)
3452 struct drm_clip_rect __user *clips_ptr;
3453 struct drm_clip_rect *clips = NULL;
3454 struct drm_mode_fb_dirty_cmd *r = data;
3455 struct drm_framebuffer *fb;
3460 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3463 fb = drm_framebuffer_lookup(dev, r->fb_id);
3467 num_clips = r->num_clips;
3468 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3470 if (!num_clips != !clips_ptr) {
3475 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3477 /* If userspace annotates copy, clips must come in pairs */
3478 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3483 if (num_clips && clips_ptr) {
3484 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3488 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
3494 ret = copy_from_user(clips, clips_ptr,
3495 num_clips * sizeof(*clips));
3502 if (fb->funcs->dirty) {
3503 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3512 drm_framebuffer_unreference(fb);
3519 * drm_fb_release - remove and free the FBs on this file
3520 * @priv: drm file for the ioctl
3522 * Destroy all the FBs associated with @filp.
3524 * Called by the user via ioctl.
3527 * Zero on success, negative errno on failure.
3529 void drm_fb_release(struct drm_file *priv)
3531 struct drm_framebuffer *fb, *tfb;
3534 * When the file gets released that means no one else can access the fb
3535 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3536 * avoid upsetting lockdep since the universal cursor code adds a
3537 * framebuffer while holding mutex locks.
3539 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3540 * locks is impossible here since no one else but this function can get
3543 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3544 list_del_init(&fb->filp_head);
3546 /* This drops the fpriv->fbs reference. */
3547 drm_framebuffer_unreference(fb);
3552 * drm_property_create - create a new property type
3554 * @flags: flags specifying the property type
3555 * @name: name of the property
3556 * @num_values: number of pre-defined values
3558 * This creates a new generic drm property which can then be attached to a drm
3559 * object with drm_object_attach_property. The returned property object must be
3560 * freed with drm_property_destroy.
3562 * Note that the DRM core keeps a per-device list of properties and that, if
3563 * drm_mode_config_cleanup() is called, it will destroy all properties created
3567 * A pointer to the newly created property on success, NULL on failure.
3569 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3570 const char *name, int num_values)
3572 struct drm_property *property = NULL;
3575 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3579 property->dev = dev;
3582 property->values = kcalloc(num_values, sizeof(uint64_t),
3584 if (!property->values)
3588 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3592 property->flags = flags;
3593 property->num_values = num_values;
3594 INIT_LIST_HEAD(&property->enum_list);
3597 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3598 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3601 list_add_tail(&property->head, &dev->mode_config.property_list);
3603 WARN_ON(!drm_property_type_valid(property));
3607 kfree(property->values);
3611 EXPORT_SYMBOL(drm_property_create);
3614 * drm_property_create_enum - create a new enumeration property type
3616 * @flags: flags specifying the property type
3617 * @name: name of the property
3618 * @props: enumeration lists with property values
3619 * @num_values: number of pre-defined values
3621 * This creates a new generic drm property which can then be attached to a drm
3622 * object with drm_object_attach_property. The returned property object must be
3623 * freed with drm_property_destroy.
3625 * Userspace is only allowed to set one of the predefined values for enumeration
3629 * A pointer to the newly created property on success, NULL on failure.
3631 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3633 const struct drm_prop_enum_list *props,
3636 struct drm_property *property;
3639 flags |= DRM_MODE_PROP_ENUM;
3641 property = drm_property_create(dev, flags, name, num_values);
3645 for (i = 0; i < num_values; i++) {
3646 ret = drm_property_add_enum(property, i,
3650 drm_property_destroy(dev, property);
3657 EXPORT_SYMBOL(drm_property_create_enum);
3660 * drm_property_create_bitmask - create a new bitmask property type
3662 * @flags: flags specifying the property type
3663 * @name: name of the property
3664 * @props: enumeration lists with property bitflags
3665 * @num_props: size of the @props array
3666 * @supported_bits: bitmask of all supported enumeration values
3668 * This creates a new bitmask drm property which can then be attached to a drm
3669 * object with drm_object_attach_property. The returned property object must be
3670 * freed with drm_property_destroy.
3672 * Compared to plain enumeration properties userspace is allowed to set any
3673 * or'ed together combination of the predefined property bitflag values
3676 * A pointer to the newly created property on success, NULL on failure.
3678 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3679 int flags, const char *name,
3680 const struct drm_prop_enum_list *props,
3682 uint64_t supported_bits)
3684 struct drm_property *property;
3685 int i, ret, index = 0;
3686 int num_values = hweight64(supported_bits);
3688 flags |= DRM_MODE_PROP_BITMASK;
3690 property = drm_property_create(dev, flags, name, num_values);
3693 for (i = 0; i < num_props; i++) {
3694 if (!(supported_bits & (1ULL << props[i].type)))
3697 if (WARN_ON(index >= num_values)) {
3698 drm_property_destroy(dev, property);
3702 ret = drm_property_add_enum(property, index++,
3706 drm_property_destroy(dev, property);
3713 EXPORT_SYMBOL(drm_property_create_bitmask);
3715 static struct drm_property *property_create_range(struct drm_device *dev,
3716 int flags, const char *name,
3717 uint64_t min, uint64_t max)
3719 struct drm_property *property;
3721 property = drm_property_create(dev, flags, name, 2);
3725 property->values[0] = min;
3726 property->values[1] = max;
3732 * drm_property_create_range - create a new unsigned ranged property type
3734 * @flags: flags specifying the property type
3735 * @name: name of the property
3736 * @min: minimum value of the property
3737 * @max: maximum value of the property
3739 * This creates a new generic drm property which can then be attached to a drm
3740 * object with drm_object_attach_property. The returned property object must be
3741 * freed with drm_property_destroy.
3743 * Userspace is allowed to set any unsigned integer value in the (min, max)
3747 * A pointer to the newly created property on success, NULL on failure.
3749 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3751 uint64_t min, uint64_t max)
3753 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3756 EXPORT_SYMBOL(drm_property_create_range);
3759 * drm_property_create_signed_range - create a new signed ranged property type
3761 * @flags: flags specifying the property type
3762 * @name: name of the property
3763 * @min: minimum value of the property
3764 * @max: maximum value of the property
3766 * This creates a new generic drm property which can then be attached to a drm
3767 * object with drm_object_attach_property. The returned property object must be
3768 * freed with drm_property_destroy.
3770 * Userspace is allowed to set any signed integer value in the (min, max)
3774 * A pointer to the newly created property on success, NULL on failure.
3776 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3777 int flags, const char *name,
3778 int64_t min, int64_t max)
3780 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3781 name, I642U64(min), I642U64(max));
3783 EXPORT_SYMBOL(drm_property_create_signed_range);
3786 * drm_property_create_object - create a new object property type
3788 * @flags: flags specifying the property type
3789 * @name: name of the property
3790 * @type: object type from DRM_MODE_OBJECT_* defines
3792 * This creates a new generic drm property which can then be attached to a drm
3793 * object with drm_object_attach_property. The returned property object must be
3794 * freed with drm_property_destroy.
3796 * Userspace is only allowed to set this to any property value of the given
3797 * @type. Only useful for atomic properties, which is enforced.
3800 * A pointer to the newly created property on success, NULL on failure.
3802 struct drm_property *drm_property_create_object(struct drm_device *dev,
3803 int flags, const char *name, uint32_t type)
3805 struct drm_property *property;
3807 flags |= DRM_MODE_PROP_OBJECT;
3809 if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
3812 property = drm_property_create(dev, flags, name, 1);
3816 property->values[0] = type;
3820 EXPORT_SYMBOL(drm_property_create_object);
3823 * drm_property_create_bool - create a new boolean property type
3825 * @flags: flags specifying the property type
3826 * @name: name of the property
3828 * This creates a new generic drm property which can then be attached to a drm
3829 * object with drm_object_attach_property. The returned property object must be
3830 * freed with drm_property_destroy.
3832 * This is implemented as a ranged property with only {0, 1} as valid values.
3835 * A pointer to the newly created property on success, NULL on failure.
3837 struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
3840 return drm_property_create_range(dev, flags, name, 0, 1);
3842 EXPORT_SYMBOL(drm_property_create_bool);
3845 * drm_property_add_enum - add a possible value to an enumeration property
3846 * @property: enumeration property to change
3847 * @index: index of the new enumeration
3848 * @value: value of the new enumeration
3849 * @name: symbolic name of the new enumeration
3851 * This functions adds enumerations to a property.
3853 * It's use is deprecated, drivers should use one of the more specific helpers
3854 * to directly create the property with all enumerations already attached.
3857 * Zero on success, error code on failure.
3859 int drm_property_add_enum(struct drm_property *property, int index,
3860 uint64_t value, const char *name)
3862 struct drm_property_enum *prop_enum;
3864 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3865 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
3869 * Bitmask enum properties have the additional constraint of values
3872 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3876 if (!list_empty(&property->enum_list)) {
3877 list_for_each_entry(prop_enum, &property->enum_list, head) {
3878 if (prop_enum->value == value) {
3879 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3880 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3886 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3890 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3891 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3892 prop_enum->value = value;
3894 property->values[index] = value;
3895 list_add_tail(&prop_enum->head, &property->enum_list);
3898 EXPORT_SYMBOL(drm_property_add_enum);
3901 * drm_property_destroy - destroy a drm property
3903 * @property: property to destry
3905 * This function frees a property including any attached resources like
3906 * enumeration values.
3908 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3910 struct drm_property_enum *prop_enum, *pt;
3912 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
3913 list_del(&prop_enum->head);
3917 if (property->num_values)
3918 kfree(property->values);
3919 drm_mode_object_put(dev, &property->base);
3920 list_del(&property->head);
3923 EXPORT_SYMBOL(drm_property_destroy);
3926 * drm_object_attach_property - attach a property to a modeset object
3927 * @obj: drm modeset object
3928 * @property: property to attach
3929 * @init_val: initial value of the property
3931 * This attaches the given property to the modeset object with the given initial
3932 * value. Currently this function cannot fail since the properties are stored in
3933 * a statically sized array.
3935 void drm_object_attach_property(struct drm_mode_object *obj,
3936 struct drm_property *property,
3939 int count = obj->properties->count;
3941 if (count == DRM_OBJECT_MAX_PROPERTY) {
3942 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3943 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3944 "you see this message on the same object type.\n",
3949 obj->properties->properties[count] = property;
3950 obj->properties->values[count] = init_val;
3951 obj->properties->count++;
3952 if (property->flags & DRM_MODE_PROP_ATOMIC)
3953 obj->properties->atomic_count++;
3955 EXPORT_SYMBOL(drm_object_attach_property);
3958 * drm_object_property_set_value - set the value of a property
3959 * @obj: drm mode object to set property value for
3960 * @property: property to set
3961 * @val: value the property should be set to
3963 * This functions sets a given property on a given object. This function only
3964 * changes the software state of the property, it does not call into the
3965 * driver's ->set_property callback.
3968 * Zero on success, error code on failure.
3970 int drm_object_property_set_value(struct drm_mode_object *obj,
3971 struct drm_property *property, uint64_t val)
3975 for (i = 0; i < obj->properties->count; i++) {
3976 if (obj->properties->properties[i] == property) {
3977 obj->properties->values[i] = val;
3984 EXPORT_SYMBOL(drm_object_property_set_value);
3987 * drm_object_property_get_value - retrieve the value of a property
3988 * @obj: drm mode object to get property value from
3989 * @property: property to retrieve
3990 * @val: storage for the property value
3992 * This function retrieves the softare state of the given property for the given
3993 * property. Since there is no driver callback to retrieve the current property
3994 * value this might be out of sync with the hardware, depending upon the driver
3998 * Zero on success, error code on failure.
4000 int drm_object_property_get_value(struct drm_mode_object *obj,
4001 struct drm_property *property, uint64_t *val)
4005 /* read-only properties bypass atomic mechanism and still store
4006 * their value in obj->properties->values[].. mostly to avoid
4007 * having to deal w/ EDID and similar props in atomic paths:
4009 if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
4010 !(property->flags & DRM_MODE_PROP_IMMUTABLE))
4011 return drm_atomic_get_property(obj, property, val);
4013 for (i = 0; i < obj->properties->count; i++) {
4014 if (obj->properties->properties[i] == property) {
4015 *val = obj->properties->values[i];
4022 EXPORT_SYMBOL(drm_object_property_get_value);
4025 * drm_mode_getproperty_ioctl - get the property metadata
4028 * @file_priv: DRM file info
4030 * This function retrieves the metadata for a given property, like the different
4031 * possible values for an enum property or the limits for a range property.
4033 * Blob properties are special
4035 * Called by the user via ioctl.
4038 * Zero on success, negative errno on failure.
4040 int drm_mode_getproperty_ioctl(struct drm_device *dev,
4041 void *data, struct drm_file *file_priv)
4043 struct drm_mode_get_property *out_resp = data;
4044 struct drm_property *property;
4046 int value_count = 0;
4049 struct drm_property_enum *prop_enum;
4050 struct drm_mode_property_enum __user *enum_ptr;
4051 uint64_t __user *values_ptr;
4053 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4056 drm_modeset_lock_all(dev);
4057 property = drm_property_find(dev, out_resp->prop_id);
4063 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4064 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4065 list_for_each_entry(prop_enum, &property->enum_list, head)
4069 value_count = property->num_values;
4071 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
4072 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
4073 out_resp->flags = property->flags;
4075 if ((out_resp->count_values >= value_count) && value_count) {
4076 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
4077 for (i = 0; i < value_count; i++) {
4078 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
4084 out_resp->count_values = value_count;
4086 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4087 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4088 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
4090 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
4091 list_for_each_entry(prop_enum, &property->enum_list, head) {
4093 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
4098 if (copy_to_user(&enum_ptr[copied].name,
4099 &prop_enum->name, DRM_PROP_NAME_LEN)) {
4106 out_resp->count_enum_blobs = enum_count;
4110 * NOTE: The idea seems to have been to use this to read all the blob
4111 * property values. But nothing ever added them to the corresponding
4112 * list, userspace always used the special-purpose get_blob ioctl to
4113 * read the value for a blob property. It also doesn't make a lot of
4114 * sense to return values here when everything else is just metadata for
4115 * the property itself.
4117 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4118 out_resp->count_enum_blobs = 0;
4120 drm_modeset_unlock_all(dev);
4125 * drm_property_create_blob - Create new blob property
4127 * Creates a new blob property for a specified DRM device, optionally
4130 * @dev: DRM device to create property for
4131 * @length: Length to allocate for blob data
4132 * @data: If specified, copies data into blob
4135 * New blob property with a single reference on success, or an ERR_PTR
4138 struct drm_property_blob *
4139 drm_property_create_blob(struct drm_device *dev, size_t length,
4142 struct drm_property_blob *blob;
4145 if (!length || length > ULONG_MAX - sizeof(struct drm_property_blob))
4146 return ERR_PTR(-EINVAL);
4148 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
4150 return ERR_PTR(-ENOMEM);
4152 /* This must be explicitly initialised, so we can safely call list_del
4153 * on it in the removal handler, even if it isn't in a file list. */
4154 INIT_LIST_HEAD(&blob->head_file);
4155 blob->length = length;
4159 memcpy(blob->data, data, length);
4161 mutex_lock(&dev->mode_config.blob_lock);
4163 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
4166 mutex_unlock(&dev->mode_config.blob_lock);
4167 return ERR_PTR(-EINVAL);
4170 kref_init(&blob->refcount);
4172 list_add_tail(&blob->head_global,
4173 &dev->mode_config.property_blob_list);
4175 mutex_unlock(&dev->mode_config.blob_lock);
4179 EXPORT_SYMBOL(drm_property_create_blob);
4182 * drm_property_free_blob - Blob property destructor
4184 * Internal free function for blob properties; must not be used directly.
4188 static void drm_property_free_blob(struct kref *kref)
4190 struct drm_property_blob *blob =
4191 container_of(kref, struct drm_property_blob, refcount);
4193 WARN_ON(!mutex_is_locked(&blob->dev->mode_config.blob_lock));
4195 list_del(&blob->head_global);
4196 list_del(&blob->head_file);
4197 drm_mode_object_put(blob->dev, &blob->base);
4203 * drm_property_unreference_blob - Unreference a blob property
4205 * Drop a reference on a blob property. May free the object.
4207 * @blob: Pointer to blob property
4209 void drm_property_unreference_blob(struct drm_property_blob *blob)
4211 struct drm_device *dev;
4218 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4220 if (kref_put_mutex(&blob->refcount, drm_property_free_blob,
4221 &dev->mode_config.blob_lock))
4222 mutex_unlock(&dev->mode_config.blob_lock);
4224 might_lock(&dev->mode_config.blob_lock);
4226 EXPORT_SYMBOL(drm_property_unreference_blob);
4229 * drm_property_unreference_blob_locked - Unreference a blob property with blob_lock held
4231 * Drop a reference on a blob property. May free the object. This must be
4232 * called with blob_lock held.
4234 * @blob: Pointer to blob property
4236 static void drm_property_unreference_blob_locked(struct drm_property_blob *blob)
4241 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4243 kref_put(&blob->refcount, drm_property_free_blob);
4247 * drm_property_destroy_user_blobs - destroy all blobs created by this client
4249 * @file_priv: destroy all blobs owned by this file handle
4251 void drm_property_destroy_user_blobs(struct drm_device *dev,
4252 struct drm_file *file_priv)
4254 struct drm_property_blob *blob, *bt;
4256 mutex_lock(&dev->mode_config.blob_lock);
4258 list_for_each_entry_safe(blob, bt, &file_priv->blobs, head_file) {
4259 list_del_init(&blob->head_file);
4260 drm_property_unreference_blob_locked(blob);
4263 mutex_unlock(&dev->mode_config.blob_lock);
4267 * drm_property_reference_blob - Take a reference on an existing property
4269 * Take a new reference on an existing blob property.
4271 * @blob: Pointer to blob property
4273 struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob)
4275 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4276 kref_get(&blob->refcount);
4279 EXPORT_SYMBOL(drm_property_reference_blob);
4282 * Like drm_property_lookup_blob, but does not return an additional reference.
4283 * Must be called with blob_lock held.
4285 static struct drm_property_blob *__drm_property_lookup_blob(struct drm_device *dev,
4288 struct drm_mode_object *obj = NULL;
4289 struct drm_property_blob *blob;
4291 WARN_ON(!mutex_is_locked(&dev->mode_config.blob_lock));
4293 mutex_lock(&dev->mode_config.idr_mutex);
4294 obj = idr_find(&dev->mode_config.crtc_idr, id);
4295 if (!obj || (obj->type != DRM_MODE_OBJECT_BLOB) || (obj->id != id))
4298 blob = obj_to_blob(obj);
4299 mutex_unlock(&dev->mode_config.idr_mutex);
4305 * drm_property_lookup_blob - look up a blob property and take a reference
4307 * @id: id of the blob property
4309 * If successful, this takes an additional reference to the blob property.
4310 * callers need to make sure to eventually unreference the returned property
4311 * again, using @drm_property_unreference_blob.
4313 struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
4316 struct drm_property_blob *blob;
4318 mutex_lock(&dev->mode_config.blob_lock);
4319 blob = __drm_property_lookup_blob(dev, id);
4321 if (!kref_get_unless_zero(&blob->refcount))
4324 mutex_unlock(&dev->mode_config.blob_lock);
4328 EXPORT_SYMBOL(drm_property_lookup_blob);
4331 * drm_property_replace_global_blob - atomically replace existing blob property
4333 * @replace: location of blob property pointer to be replaced
4334 * @length: length of data for new blob, or 0 for no data
4335 * @data: content for new blob, or NULL for no data
4336 * @obj_holds_id: optional object for property holding blob ID
4337 * @prop_holds_id: optional property holding blob ID
4338 * @return 0 on success or error on failure
4340 * This function will atomically replace a global property in the blob list,
4341 * optionally updating a property which holds the ID of that property. It is
4342 * guaranteed to be atomic: no caller will be allowed to see intermediate
4343 * results, and either the entire operation will succeed and clean up the
4344 * previous property, or it will fail and the state will be unchanged.
4346 * If length is 0 or data is NULL, no new blob will be created, and the holding
4347 * property, if specified, will be set to 0.
4349 * Access to the replace pointer is assumed to be protected by the caller, e.g.
4350 * by holding the relevant modesetting object lock for its parent.
4352 * For example, a drm_connector has a 'PATH' property, which contains the ID
4353 * of a blob property with the value of the MST path information. Calling this
4354 * function with replace pointing to the connector's path_blob_ptr, length and
4355 * data set for the new path information, obj_holds_id set to the connector's
4356 * base object, and prop_holds_id set to the path property name, will perform
4357 * a completely atomic update. The access to path_blob_ptr is protected by the
4358 * caller holding a lock on the connector.
4360 static int drm_property_replace_global_blob(struct drm_device *dev,
4361 struct drm_property_blob **replace,
4364 struct drm_mode_object *obj_holds_id,
4365 struct drm_property *prop_holds_id)
4367 struct drm_property_blob *new_blob = NULL;
4368 struct drm_property_blob *old_blob = NULL;
4371 WARN_ON(replace == NULL);
4373 old_blob = *replace;
4375 if (length && data) {
4376 new_blob = drm_property_create_blob(dev, length, data);
4377 if (IS_ERR(new_blob))
4378 return PTR_ERR(new_blob);
4381 /* This does not need to be synchronised with blob_lock, as the
4382 * get_properties ioctl locks all modesetting objects, and
4383 * obj_holds_id must be locked before calling here, so we cannot
4384 * have its value out of sync with the list membership modified
4385 * below under blob_lock. */
4387 ret = drm_object_property_set_value(obj_holds_id,
4390 new_blob->base.id : 0);
4395 drm_property_unreference_blob(old_blob);
4396 *replace = new_blob;
4401 drm_property_unreference_blob(new_blob);
4406 * drm_mode_getblob_ioctl - get the contents of a blob property value
4409 * @file_priv: DRM file info
4411 * This function retrieves the contents of a blob property. The value stored in
4412 * an object's blob property is just a normal modeset object id.
4414 * Called by the user via ioctl.
4417 * Zero on success, negative errno on failure.
4419 int drm_mode_getblob_ioctl(struct drm_device *dev,
4420 void *data, struct drm_file *file_priv)
4422 struct drm_mode_get_blob *out_resp = data;
4423 struct drm_property_blob *blob;
4425 void __user *blob_ptr;
4427 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4430 drm_modeset_lock_all(dev);
4431 mutex_lock(&dev->mode_config.blob_lock);
4432 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
4438 if (out_resp->length == blob->length) {
4439 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4440 if (copy_to_user(blob_ptr, blob->data, blob->length)) {
4445 out_resp->length = blob->length;
4448 mutex_unlock(&dev->mode_config.blob_lock);
4449 drm_modeset_unlock_all(dev);
4454 * drm_mode_createblob_ioctl - create a new blob property
4457 * @file_priv: DRM file info
4459 * This function creates a new blob property with user-defined values. In order
4460 * to give us sensible validation and checking when creating, rather than at
4461 * every potential use, we also require a type to be provided upfront.
4463 * Called by the user via ioctl.
4466 * Zero on success, negative errno on failure.
4468 int drm_mode_createblob_ioctl(struct drm_device *dev,
4469 void *data, struct drm_file *file_priv)
4471 struct drm_mode_create_blob *out_resp = data;
4472 struct drm_property_blob *blob;
4473 void __user *blob_ptr;
4476 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4479 blob = drm_property_create_blob(dev, out_resp->length, NULL);
4481 return PTR_ERR(blob);
4483 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4484 if (copy_from_user(blob->data, blob_ptr, out_resp->length)) {
4489 /* Dropping the lock between create_blob and our access here is safe
4490 * as only the same file_priv can remove the blob; at this point, it is
4491 * not associated with any file_priv. */
4492 mutex_lock(&dev->mode_config.blob_lock);
4493 out_resp->blob_id = blob->base.id;
4494 list_add_tail(&blob->head_file, &file_priv->blobs);
4495 mutex_unlock(&dev->mode_config.blob_lock);
4500 drm_property_unreference_blob(blob);
4505 * drm_mode_destroyblob_ioctl - destroy a user blob property
4508 * @file_priv: DRM file info
4510 * Destroy an existing user-defined blob property.
4512 * Called by the user via ioctl.
4515 * Zero on success, negative errno on failure.
4517 int drm_mode_destroyblob_ioctl(struct drm_device *dev,
4518 void *data, struct drm_file *file_priv)
4520 struct drm_mode_destroy_blob *out_resp = data;
4521 struct drm_property_blob *blob = NULL, *bt;
4525 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4528 mutex_lock(&dev->mode_config.blob_lock);
4529 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
4535 /* Ensure the property was actually created by this user. */
4536 list_for_each_entry(bt, &file_priv->blobs, head_file) {
4548 /* We must drop head_file here, because we may not be the last
4549 * reference on the blob. */
4550 list_del_init(&blob->head_file);
4551 drm_property_unreference_blob_locked(blob);
4552 mutex_unlock(&dev->mode_config.blob_lock);
4557 mutex_unlock(&dev->mode_config.blob_lock);
4562 * drm_mode_connector_set_path_property - set tile property on connector
4563 * @connector: connector to set property on.
4564 * @path: path to use for property; must not be NULL.
4566 * This creates a property to expose to userspace to specify a
4567 * connector path. This is mainly used for DisplayPort MST where
4568 * connectors have a topology and we want to allow userspace to give
4569 * them more meaningful names.
4572 * Zero on success, negative errno on failure.
4574 int drm_mode_connector_set_path_property(struct drm_connector *connector,
4577 struct drm_device *dev = connector->dev;
4580 ret = drm_property_replace_global_blob(dev,
4581 &connector->path_blob_ptr,
4585 dev->mode_config.path_property);
4588 EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4591 * drm_mode_connector_set_tile_property - set tile property on connector
4592 * @connector: connector to set property on.
4594 * This looks up the tile information for a connector, and creates a
4595 * property for userspace to parse if it exists. The property is of
4596 * the form of 8 integers using ':' as a separator.
4599 * Zero on success, errno on failure.
4601 int drm_mode_connector_set_tile_property(struct drm_connector *connector)
4603 struct drm_device *dev = connector->dev;
4607 if (!connector->has_tile) {
4608 ret = drm_property_replace_global_blob(dev,
4609 &connector->tile_blob_ptr,
4613 dev->mode_config.tile_property);
4617 snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4618 connector->tile_group->id, connector->tile_is_single_monitor,
4619 connector->num_h_tile, connector->num_v_tile,
4620 connector->tile_h_loc, connector->tile_v_loc,
4621 connector->tile_h_size, connector->tile_v_size);
4623 ret = drm_property_replace_global_blob(dev,
4624 &connector->tile_blob_ptr,
4628 dev->mode_config.tile_property);
4631 EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
4634 * drm_mode_connector_update_edid_property - update the edid property of a connector
4635 * @connector: drm connector
4636 * @edid: new value of the edid property
4638 * This function creates a new blob modeset object and assigns its id to the
4639 * connector's edid property.
4642 * Zero on success, negative errno on failure.
4644 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4645 const struct edid *edid)
4647 struct drm_device *dev = connector->dev;
4651 /* ignore requests to set edid when overridden */
4652 if (connector->override_edid)
4656 size = EDID_LENGTH * (1 + edid->extensions);
4658 ret = drm_property_replace_global_blob(dev,
4659 &connector->edid_blob_ptr,
4663 dev->mode_config.edid_property);
4666 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4668 /* Some properties could refer to dynamic refcnt'd objects, or things that
4669 * need special locking to handle lifetime issues (ie. to ensure the prop
4670 * value doesn't become invalid part way through the property update due to
4671 * race). The value returned by reference via 'obj' should be passed back
4672 * to drm_property_change_valid_put() after the property is set (and the
4673 * object to which the property is attached has a chance to take it's own
4676 bool drm_property_change_valid_get(struct drm_property *property,
4677 uint64_t value, struct drm_mode_object **ref)
4681 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4686 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
4687 if (value < property->values[0] || value > property->values[1])
4690 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4691 int64_t svalue = U642I64(value);
4693 if (svalue < U642I64(property->values[0]) ||
4694 svalue > U642I64(property->values[1]))
4697 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4698 uint64_t valid_mask = 0;
4700 for (i = 0; i < property->num_values; i++)
4701 valid_mask |= (1ULL << property->values[i]);
4702 return !(value & ~valid_mask);
4703 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
4704 struct drm_property_blob *blob;
4709 blob = drm_property_lookup_blob(property->dev, value);
4716 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4717 /* a zero value for an object property translates to null: */
4721 /* handle refcnt'd objects specially: */
4722 if (property->values[0] == DRM_MODE_OBJECT_FB) {
4723 struct drm_framebuffer *fb;
4724 fb = drm_framebuffer_lookup(property->dev, value);
4732 return _object_find(property->dev, value, property->values[0]) != NULL;
4736 for (i = 0; i < property->num_values; i++)
4737 if (property->values[i] == value)
4742 void drm_property_change_valid_put(struct drm_property *property,
4743 struct drm_mode_object *ref)
4748 if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4749 if (property->values[0] == DRM_MODE_OBJECT_FB)
4750 drm_framebuffer_unreference(obj_to_fb(ref));
4751 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4752 drm_property_unreference_blob(obj_to_blob(ref));
4756 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4759 * @file_priv: DRM file info
4761 * This function sets the current value for a connectors's property. It also
4762 * calls into a driver's ->set_property callback to update the hardware state
4764 * Called by the user via ioctl.
4767 * Zero on success, negative errno on failure.
4769 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4770 void *data, struct drm_file *file_priv)
4772 struct drm_mode_connector_set_property *conn_set_prop = data;
4773 struct drm_mode_obj_set_property obj_set_prop = {
4774 .value = conn_set_prop->value,
4775 .prop_id = conn_set_prop->prop_id,
4776 .obj_id = conn_set_prop->connector_id,
4777 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4780 /* It does all the locking and checking we need */
4781 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
4784 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4785 struct drm_property *property,
4789 struct drm_connector *connector = obj_to_connector(obj);
4791 /* Do DPMS ourselves */
4792 if (property == connector->dev->mode_config.dpms_property) {
4794 if (connector->funcs->dpms)
4795 ret = (*connector->funcs->dpms)(connector, (int)value);
4796 } else if (connector->funcs->set_property)
4797 ret = connector->funcs->set_property(connector, property, value);
4799 /* store the property value if successful */
4801 drm_object_property_set_value(&connector->base, property, value);
4805 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4806 struct drm_property *property,
4810 struct drm_crtc *crtc = obj_to_crtc(obj);
4812 if (crtc->funcs->set_property)
4813 ret = crtc->funcs->set_property(crtc, property, value);
4815 drm_object_property_set_value(obj, property, value);
4821 * drm_mode_plane_set_obj_prop - set the value of a property
4822 * @plane: drm plane object to set property value for
4823 * @property: property to set
4824 * @value: value the property should be set to
4826 * This functions sets a given property on a given plane object. This function
4827 * calls the driver's ->set_property callback and changes the software state of
4828 * the property if the callback succeeds.
4831 * Zero on success, error code on failure.
4833 int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4834 struct drm_property *property,
4838 struct drm_mode_object *obj = &plane->base;
4840 if (plane->funcs->set_property)
4841 ret = plane->funcs->set_property(plane, property, value);
4843 drm_object_property_set_value(obj, property, value);
4847 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4850 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4853 * @file_priv: DRM file info
4855 * This function retrieves the current value for an object's property. Compared
4856 * to the connector specific ioctl this one is extended to also work on crtc and
4859 * Called by the user via ioctl.
4862 * Zero on success, negative errno on failure.
4864 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4865 struct drm_file *file_priv)
4867 struct drm_mode_obj_get_properties *arg = data;
4868 struct drm_mode_object *obj;
4871 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4874 drm_modeset_lock_all(dev);
4876 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4881 if (!obj->properties) {
4886 ret = get_properties(obj, file_priv->atomic,
4887 (uint32_t __user *)(unsigned long)(arg->props_ptr),
4888 (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
4892 drm_modeset_unlock_all(dev);
4897 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4900 * @file_priv: DRM file info
4902 * This function sets the current value for an object's property. It also calls
4903 * into a driver's ->set_property callback to update the hardware state.
4904 * Compared to the connector specific ioctl this one is extended to also work on
4905 * crtc and plane objects.
4907 * Called by the user via ioctl.
4910 * Zero on success, negative errno on failure.
4912 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4913 struct drm_file *file_priv)
4915 struct drm_mode_obj_set_property *arg = data;
4916 struct drm_mode_object *arg_obj;
4917 struct drm_mode_object *prop_obj;
4918 struct drm_property *property;
4919 int i, ret = -EINVAL;
4920 struct drm_mode_object *ref;
4922 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4925 drm_modeset_lock_all(dev);
4927 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4932 if (!arg_obj->properties)
4935 for (i = 0; i < arg_obj->properties->count; i++)
4936 if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
4939 if (i == arg_obj->properties->count)
4942 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4943 DRM_MODE_OBJECT_PROPERTY);
4948 property = obj_to_property(prop_obj);
4950 if (!drm_property_change_valid_get(property, arg->value, &ref))
4953 switch (arg_obj->type) {
4954 case DRM_MODE_OBJECT_CONNECTOR:
4955 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4958 case DRM_MODE_OBJECT_CRTC:
4959 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4961 case DRM_MODE_OBJECT_PLANE:
4962 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
4963 property, arg->value);
4967 drm_property_change_valid_put(property, ref);
4970 drm_modeset_unlock_all(dev);
4975 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4976 * @connector: connector to attach
4977 * @encoder: encoder to attach @connector to
4979 * This function links up a connector to an encoder. Note that the routing
4980 * restrictions between encoders and crtcs are exposed to userspace through the
4981 * possible_clones and possible_crtcs bitmasks.
4984 * Zero on success, negative errno on failure.
4986 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4987 struct drm_encoder *encoder)
4991 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4992 if (connector->encoder_ids[i] == 0) {
4993 connector->encoder_ids[i] = encoder->base.id;
4999 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
5002 * drm_mode_crtc_set_gamma_size - set the gamma table size
5003 * @crtc: CRTC to set the gamma table size for
5004 * @gamma_size: size of the gamma table
5006 * Drivers which support gamma tables should set this to the supported gamma
5007 * table size when initializing the CRTC. Currently the drm core only supports a
5008 * fixed gamma table size.
5011 * Zero on success, negative errno on failure.
5013 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
5016 crtc->gamma_size = gamma_size;
5018 crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
5020 if (!crtc->gamma_store) {
5021 crtc->gamma_size = 0;
5027 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
5030 * drm_mode_gamma_set_ioctl - set the gamma table
5033 * @file_priv: DRM file info
5035 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
5036 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
5038 * Called by the user via ioctl.
5041 * Zero on success, negative errno on failure.
5043 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
5044 void *data, struct drm_file *file_priv)
5046 struct drm_mode_crtc_lut *crtc_lut = data;
5047 struct drm_crtc *crtc;
5048 void *r_base, *g_base, *b_base;
5052 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5055 drm_modeset_lock_all(dev);
5056 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5062 if (crtc->funcs->gamma_set == NULL) {
5067 /* memcpy into gamma store */
5068 if (crtc_lut->gamma_size != crtc->gamma_size) {
5073 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5074 r_base = crtc->gamma_store;
5075 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
5080 g_base = r_base + size;
5081 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
5086 b_base = g_base + size;
5087 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
5092 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
5095 drm_modeset_unlock_all(dev);
5101 * drm_mode_gamma_get_ioctl - get the gamma table
5104 * @file_priv: DRM file info
5106 * Copy the current gamma table into the storage provided. This also provides
5107 * the gamma table size the driver expects, which can be used to size the
5108 * allocated storage.
5110 * Called by the user via ioctl.
5113 * Zero on success, negative errno on failure.
5115 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
5116 void *data, struct drm_file *file_priv)
5118 struct drm_mode_crtc_lut *crtc_lut = data;
5119 struct drm_crtc *crtc;
5120 void *r_base, *g_base, *b_base;
5124 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5127 drm_modeset_lock_all(dev);
5128 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5134 /* memcpy into gamma store */
5135 if (crtc_lut->gamma_size != crtc->gamma_size) {
5140 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5141 r_base = crtc->gamma_store;
5142 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
5147 g_base = r_base + size;
5148 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
5153 b_base = g_base + size;
5154 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
5159 drm_modeset_unlock_all(dev);
5164 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
5167 * @file_priv: DRM file info
5169 * This schedules an asynchronous update on a given CRTC, called page flip.
5170 * Optionally a drm event is generated to signal the completion of the event.
5171 * Generic drivers cannot assume that a pageflip with changed framebuffer
5172 * properties (including driver specific metadata like tiling layout) will work,
5173 * but some drivers support e.g. pixel format changes through the pageflip
5176 * Called by the user via ioctl.
5179 * Zero on success, negative errno on failure.
5181 int drm_mode_page_flip_ioctl(struct drm_device *dev,
5182 void *data, struct drm_file *file_priv)
5184 struct drm_mode_crtc_page_flip *page_flip = data;
5185 struct drm_crtc *crtc;
5186 struct drm_framebuffer *fb = NULL;
5187 struct drm_pending_vblank_event *e = NULL;
5188 unsigned long flags;
5191 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
5192 page_flip->reserved != 0)
5195 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
5198 crtc = drm_crtc_find(dev, page_flip->crtc_id);
5202 drm_modeset_lock_crtc(crtc, crtc->primary);
5203 if (crtc->primary->fb == NULL) {
5204 /* The framebuffer is currently unbound, presumably
5205 * due to a hotplug event, that userspace has not
5212 if (crtc->funcs->page_flip == NULL)
5215 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
5222 const struct drm_plane_state *state = crtc->primary->state;
5224 ret = check_src_coords(state->src_x, state->src_y,
5225 state->src_w, state->src_h, fb);
5227 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
5232 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
5233 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
5238 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
5240 spin_lock_irqsave(&dev->event_lock, flags);
5241 if (file_priv->event_space < sizeof(e->event)) {
5242 spin_unlock_irqrestore(&dev->event_lock, flags);
5245 file_priv->event_space -= sizeof(e->event);
5246 spin_unlock_irqrestore(&dev->event_lock, flags);
5248 e = kzalloc(sizeof(*e), GFP_KERNEL);
5250 spin_lock_irqsave(&dev->event_lock, flags);
5251 file_priv->event_space += sizeof(e->event);
5252 spin_unlock_irqrestore(&dev->event_lock, flags);
5256 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
5257 e->event.base.length = sizeof(e->event);
5258 e->event.user_data = page_flip->user_data;
5259 e->base.event = &e->event.base;
5260 e->base.file_priv = file_priv;
5262 (void (*) (struct drm_pending_event *)) kfree;
5265 crtc->primary->old_fb = crtc->primary->fb;
5266 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
5268 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
5269 spin_lock_irqsave(&dev->event_lock, flags);
5270 file_priv->event_space += sizeof(e->event);
5271 spin_unlock_irqrestore(&dev->event_lock, flags);
5274 /* Keep the old fb, don't unref it. */
5275 crtc->primary->old_fb = NULL;
5277 crtc->primary->fb = fb;
5278 /* Unref only the old framebuffer. */
5284 drm_framebuffer_unreference(fb);
5285 if (crtc->primary->old_fb)
5286 drm_framebuffer_unreference(crtc->primary->old_fb);
5287 crtc->primary->old_fb = NULL;
5288 drm_modeset_unlock_crtc(crtc);
5294 * drm_mode_config_reset - call ->reset callbacks
5297 * This functions calls all the crtc's, encoder's and connector's ->reset
5298 * callback. Drivers can use this in e.g. their driver load or resume code to
5299 * reset hardware and software state.
5301 void drm_mode_config_reset(struct drm_device *dev)
5303 struct drm_crtc *crtc;
5304 struct drm_plane *plane;
5305 struct drm_encoder *encoder;
5306 struct drm_connector *connector;
5308 drm_for_each_plane(plane, dev)
5309 if (plane->funcs->reset)
5310 plane->funcs->reset(plane);
5312 drm_for_each_crtc(crtc, dev)
5313 if (crtc->funcs->reset)
5314 crtc->funcs->reset(crtc);
5316 drm_for_each_encoder(encoder, dev)
5317 if (encoder->funcs->reset)
5318 encoder->funcs->reset(encoder);
5320 mutex_lock(&dev->mode_config.mutex);
5321 drm_for_each_connector(connector, dev)
5322 if (connector->funcs->reset)
5323 connector->funcs->reset(connector);
5324 mutex_unlock(&dev->mode_config.mutex);
5326 EXPORT_SYMBOL(drm_mode_config_reset);
5329 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5332 * @file_priv: DRM file info
5334 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5335 * TTM or something else entirely) and returns the resulting buffer handle. This
5336 * handle can then be wrapped up into a framebuffer modeset object.
5338 * Note that userspace is not allowed to use such objects for render
5339 * acceleration - drivers must create their own private ioctls for such a use
5342 * Called by the user via ioctl.
5345 * Zero on success, negative errno on failure.
5347 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
5348 void *data, struct drm_file *file_priv)
5350 struct drm_mode_create_dumb *args = data;
5351 u32 cpp, stride, size;
5353 if (!dev->driver->dumb_create)
5355 if (!args->width || !args->height || !args->bpp)
5358 /* overflow checks for 32bit size calculations */
5359 /* NOTE: DIV_ROUND_UP() can overflow */
5360 cpp = DIV_ROUND_UP(args->bpp, 8);
5361 if (!cpp || cpp > 0xffffffffU / args->width)
5363 stride = cpp * args->width;
5364 if (args->height > 0xffffffffU / stride)
5367 /* test for wrap-around */
5368 size = args->height * stride;
5369 if (PAGE_ALIGN(size) == 0)
5373 * handle, pitch and size are output parameters. Zero them out to
5374 * prevent drivers from accidentally using uninitialized data. Since
5375 * not all existing userspace is clearing these fields properly we
5376 * cannot reject IOCTL with garbage in them.
5382 return dev->driver->dumb_create(file_priv, dev, args);
5386 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5389 * @file_priv: DRM file info
5391 * Allocate an offset in the drm device node's address space to be able to
5392 * memory map a dumb buffer.
5394 * Called by the user via ioctl.
5397 * Zero on success, negative errno on failure.
5399 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
5400 void *data, struct drm_file *file_priv)
5402 struct drm_mode_map_dumb *args = data;
5404 /* call driver ioctl to get mmap offset */
5405 if (!dev->driver->dumb_map_offset)
5408 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
5412 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5415 * @file_priv: DRM file info
5417 * This destroys the userspace handle for the given dumb backing storage buffer.
5418 * Since buffer objects must be reference counted in the kernel a buffer object
5419 * won't be immediately freed if a framebuffer modeset object still uses it.
5421 * Called by the user via ioctl.
5424 * Zero on success, negative errno on failure.
5426 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
5427 void *data, struct drm_file *file_priv)
5429 struct drm_mode_destroy_dumb *args = data;
5431 if (!dev->driver->dumb_destroy)
5434 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
5438 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5439 * @format: pixel format (DRM_FORMAT_*)
5440 * @depth: storage for the depth value
5441 * @bpp: storage for the bpp value
5443 * This only supports RGB formats here for compat with code that doesn't use
5444 * pixel formats directly yet.
5446 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
5451 case DRM_FORMAT_RGB332:
5452 case DRM_FORMAT_BGR233:
5456 case DRM_FORMAT_XRGB1555:
5457 case DRM_FORMAT_XBGR1555:
5458 case DRM_FORMAT_RGBX5551:
5459 case DRM_FORMAT_BGRX5551:
5460 case DRM_FORMAT_ARGB1555:
5461 case DRM_FORMAT_ABGR1555:
5462 case DRM_FORMAT_RGBA5551:
5463 case DRM_FORMAT_BGRA5551:
5467 case DRM_FORMAT_RGB565:
5468 case DRM_FORMAT_BGR565:
5472 case DRM_FORMAT_RGB888:
5473 case DRM_FORMAT_BGR888:
5477 case DRM_FORMAT_XRGB8888:
5478 case DRM_FORMAT_XBGR8888:
5479 case DRM_FORMAT_RGBX8888:
5480 case DRM_FORMAT_BGRX8888:
5484 case DRM_FORMAT_XRGB2101010:
5485 case DRM_FORMAT_XBGR2101010:
5486 case DRM_FORMAT_RGBX1010102:
5487 case DRM_FORMAT_BGRX1010102:
5488 case DRM_FORMAT_ARGB2101010:
5489 case DRM_FORMAT_ABGR2101010:
5490 case DRM_FORMAT_RGBA1010102:
5491 case DRM_FORMAT_BGRA1010102:
5495 case DRM_FORMAT_ARGB8888:
5496 case DRM_FORMAT_ABGR8888:
5497 case DRM_FORMAT_RGBA8888:
5498 case DRM_FORMAT_BGRA8888:
5503 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5504 drm_get_format_name(format));
5510 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
5513 * drm_format_num_planes - get the number of planes for format
5514 * @format: pixel format (DRM_FORMAT_*)
5517 * The number of planes used by the specified pixel format.
5519 int drm_format_num_planes(uint32_t format)
5522 case DRM_FORMAT_YUV410:
5523 case DRM_FORMAT_YVU410:
5524 case DRM_FORMAT_YUV411:
5525 case DRM_FORMAT_YVU411:
5526 case DRM_FORMAT_YUV420:
5527 case DRM_FORMAT_YVU420:
5528 case DRM_FORMAT_YUV422:
5529 case DRM_FORMAT_YVU422:
5530 case DRM_FORMAT_YUV444:
5531 case DRM_FORMAT_YVU444:
5533 case DRM_FORMAT_NV12:
5534 case DRM_FORMAT_NV21:
5535 case DRM_FORMAT_NV16:
5536 case DRM_FORMAT_NV61:
5537 case DRM_FORMAT_NV24:
5538 case DRM_FORMAT_NV42:
5544 EXPORT_SYMBOL(drm_format_num_planes);
5547 * drm_format_plane_cpp - determine the bytes per pixel value
5548 * @format: pixel format (DRM_FORMAT_*)
5549 * @plane: plane index
5552 * The bytes per pixel value for the specified plane.
5554 int drm_format_plane_cpp(uint32_t format, int plane)
5559 if (plane >= drm_format_num_planes(format))
5563 case DRM_FORMAT_YUYV:
5564 case DRM_FORMAT_YVYU:
5565 case DRM_FORMAT_UYVY:
5566 case DRM_FORMAT_VYUY:
5568 case DRM_FORMAT_NV12:
5569 case DRM_FORMAT_NV21:
5570 case DRM_FORMAT_NV16:
5571 case DRM_FORMAT_NV61:
5572 case DRM_FORMAT_NV24:
5573 case DRM_FORMAT_NV42:
5574 return plane ? 2 : 1;
5575 case DRM_FORMAT_YUV410:
5576 case DRM_FORMAT_YVU410:
5577 case DRM_FORMAT_YUV411:
5578 case DRM_FORMAT_YVU411:
5579 case DRM_FORMAT_YUV420:
5580 case DRM_FORMAT_YVU420:
5581 case DRM_FORMAT_YUV422:
5582 case DRM_FORMAT_YVU422:
5583 case DRM_FORMAT_YUV444:
5584 case DRM_FORMAT_YVU444:
5587 drm_fb_get_bpp_depth(format, &depth, &bpp);
5591 EXPORT_SYMBOL(drm_format_plane_cpp);
5594 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5595 * @format: pixel format (DRM_FORMAT_*)
5598 * The horizontal chroma subsampling factor for the
5599 * specified pixel format.
5601 int drm_format_horz_chroma_subsampling(uint32_t format)
5604 case DRM_FORMAT_YUV411:
5605 case DRM_FORMAT_YVU411:
5606 case DRM_FORMAT_YUV410:
5607 case DRM_FORMAT_YVU410:
5609 case DRM_FORMAT_YUYV:
5610 case DRM_FORMAT_YVYU:
5611 case DRM_FORMAT_UYVY:
5612 case DRM_FORMAT_VYUY:
5613 case DRM_FORMAT_NV12:
5614 case DRM_FORMAT_NV21:
5615 case DRM_FORMAT_NV16:
5616 case DRM_FORMAT_NV61:
5617 case DRM_FORMAT_YUV422:
5618 case DRM_FORMAT_YVU422:
5619 case DRM_FORMAT_YUV420:
5620 case DRM_FORMAT_YVU420:
5626 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5629 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5630 * @format: pixel format (DRM_FORMAT_*)
5633 * The vertical chroma subsampling factor for the
5634 * specified pixel format.
5636 int drm_format_vert_chroma_subsampling(uint32_t format)
5639 case DRM_FORMAT_YUV410:
5640 case DRM_FORMAT_YVU410:
5642 case DRM_FORMAT_YUV420:
5643 case DRM_FORMAT_YVU420:
5644 case DRM_FORMAT_NV12:
5645 case DRM_FORMAT_NV21:
5651 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
5654 * drm_rotation_simplify() - Try to simplify the rotation
5655 * @rotation: Rotation to be simplified
5656 * @supported_rotations: Supported rotations
5658 * Attempt to simplify the rotation to a form that is supported.
5659 * Eg. if the hardware supports everything except DRM_REFLECT_X
5660 * one could call this function like this:
5662 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5663 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5664 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5666 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5667 * transforms the hardware supports, this function may not
5668 * be able to produce a supported transform, so the caller should
5669 * check the result afterwards.
5671 unsigned int drm_rotation_simplify(unsigned int rotation,
5672 unsigned int supported_rotations)
5674 if (rotation & ~supported_rotations) {
5675 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5676 rotation = (rotation & DRM_REFLECT_MASK) |
5677 BIT((ffs(rotation & DRM_ROTATE_MASK) + 1) % 4);
5682 EXPORT_SYMBOL(drm_rotation_simplify);
5685 * drm_mode_config_init - initialize DRM mode_configuration structure
5688 * Initialize @dev's mode_config structure, used for tracking the graphics
5689 * configuration of @dev.
5691 * Since this initializes the modeset locks, no locking is possible. Which is no
5692 * problem, since this should happen single threaded at init time. It is the
5693 * driver's problem to ensure this guarantee.
5696 void drm_mode_config_init(struct drm_device *dev)
5698 mutex_init(&dev->mode_config.mutex);
5699 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
5700 mutex_init(&dev->mode_config.idr_mutex);
5701 mutex_init(&dev->mode_config.fb_lock);
5702 mutex_init(&dev->mode_config.blob_lock);
5703 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5704 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5705 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5706 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5707 INIT_LIST_HEAD(&dev->mode_config.property_list);
5708 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5709 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5710 idr_init(&dev->mode_config.crtc_idr);
5711 idr_init(&dev->mode_config.tile_idr);
5713 drm_modeset_lock_all(dev);
5714 drm_mode_create_standard_properties(dev);
5715 drm_modeset_unlock_all(dev);
5717 /* Just to be sure */
5718 dev->mode_config.num_fb = 0;
5719 dev->mode_config.num_connector = 0;
5720 dev->mode_config.num_crtc = 0;
5721 dev->mode_config.num_encoder = 0;
5722 dev->mode_config.num_overlay_plane = 0;
5723 dev->mode_config.num_total_plane = 0;
5725 EXPORT_SYMBOL(drm_mode_config_init);
5728 * drm_mode_config_cleanup - free up DRM mode_config info
5731 * Free up all the connectors and CRTCs associated with this DRM device, then
5732 * free up the framebuffers and associated buffer objects.
5734 * Note that since this /should/ happen single-threaded at driver/device
5735 * teardown time, no locking is required. It's the driver's job to ensure that
5736 * this guarantee actually holds true.
5738 * FIXME: cleanup any dangling user buffer objects too
5740 void drm_mode_config_cleanup(struct drm_device *dev)
5742 struct drm_connector *connector, *ot;
5743 struct drm_crtc *crtc, *ct;
5744 struct drm_encoder *encoder, *enct;
5745 struct drm_framebuffer *fb, *fbt;
5746 struct drm_property *property, *pt;
5747 struct drm_property_blob *blob, *bt;
5748 struct drm_plane *plane, *plt;
5750 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5752 encoder->funcs->destroy(encoder);
5755 list_for_each_entry_safe(connector, ot,
5756 &dev->mode_config.connector_list, head) {
5757 connector->funcs->destroy(connector);
5760 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5762 drm_property_destroy(dev, property);
5765 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5767 drm_property_unreference_blob(blob);
5771 * Single-threaded teardown context, so it's not required to grab the
5772 * fb_lock to protect against concurrent fb_list access. Contrary, it
5773 * would actually deadlock with the drm_framebuffer_cleanup function.
5775 * Also, if there are any framebuffers left, that's a driver leak now,
5776 * so politely WARN about this.
5778 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5779 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5780 drm_framebuffer_free(&fb->refcount);
5783 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5785 plane->funcs->destroy(plane);
5788 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5789 crtc->funcs->destroy(crtc);
5792 idr_destroy(&dev->mode_config.tile_idr);
5793 idr_destroy(&dev->mode_config.crtc_idr);
5794 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
5796 EXPORT_SYMBOL(drm_mode_config_cleanup);
5798 struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5799 unsigned int supported_rotations)
5801 static const struct drm_prop_enum_list props[] = {
5802 { DRM_ROTATE_0, "rotate-0" },
5803 { DRM_ROTATE_90, "rotate-90" },
5804 { DRM_ROTATE_180, "rotate-180" },
5805 { DRM_ROTATE_270, "rotate-270" },
5806 { DRM_REFLECT_X, "reflect-x" },
5807 { DRM_REFLECT_Y, "reflect-y" },
5810 return drm_property_create_bitmask(dev, 0, "rotation",
5811 props, ARRAY_SIZE(props),
5812 supported_rotations);
5814 EXPORT_SYMBOL(drm_mode_create_rotation_property);
5819 * Tile groups are used to represent tiled monitors with a unique
5820 * integer identifier. Tiled monitors using DisplayID v1.3 have
5821 * a unique 8-byte handle, we store this in a tile group, so we
5822 * have a common identifier for all tiles in a monitor group.
5824 static void drm_tile_group_free(struct kref *kref)
5826 struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
5827 struct drm_device *dev = tg->dev;
5828 mutex_lock(&dev->mode_config.idr_mutex);
5829 idr_remove(&dev->mode_config.tile_idr, tg->id);
5830 mutex_unlock(&dev->mode_config.idr_mutex);
5835 * drm_mode_put_tile_group - drop a reference to a tile group.
5837 * @tg: tile group to drop reference to.
5839 * drop reference to tile group and free if 0.
5841 void drm_mode_put_tile_group(struct drm_device *dev,
5842 struct drm_tile_group *tg)
5844 kref_put(&tg->refcount, drm_tile_group_free);
5848 * drm_mode_get_tile_group - get a reference to an existing tile group
5850 * @topology: 8-bytes unique per monitor.
5852 * Use the unique bytes to get a reference to an existing tile group.
5855 * tile group or NULL if not found.
5857 struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
5860 struct drm_tile_group *tg;
5862 mutex_lock(&dev->mode_config.idr_mutex);
5863 idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
5864 if (!memcmp(tg->group_data, topology, 8)) {
5865 if (!kref_get_unless_zero(&tg->refcount))
5867 mutex_unlock(&dev->mode_config.idr_mutex);
5871 mutex_unlock(&dev->mode_config.idr_mutex);
5874 EXPORT_SYMBOL(drm_mode_get_tile_group);
5877 * drm_mode_create_tile_group - create a tile group from a displayid description
5879 * @topology: 8-bytes unique per monitor.
5881 * Create a tile group for the unique monitor, and get a unique
5882 * identifier for the tile group.
5885 * new tile group or error.
5887 struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
5890 struct drm_tile_group *tg;
5893 tg = kzalloc(sizeof(*tg), GFP_KERNEL);
5895 return ERR_PTR(-ENOMEM);
5897 kref_init(&tg->refcount);
5898 memcpy(tg->group_data, topology, 8);
5901 mutex_lock(&dev->mode_config.idr_mutex);
5902 ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
5910 mutex_unlock(&dev->mode_config.idr_mutex);
5913 EXPORT_SYMBOL(drm_mode_create_tile_group);