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 const 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" },
171 { DRM_MODE_CONNECTOR_DPI, "DPI" },
174 static const struct drm_prop_enum_list drm_encoder_enum_list[] = {
175 { DRM_MODE_ENCODER_NONE, "None" },
176 { DRM_MODE_ENCODER_DAC, "DAC" },
177 { DRM_MODE_ENCODER_TMDS, "TMDS" },
178 { DRM_MODE_ENCODER_LVDS, "LVDS" },
179 { DRM_MODE_ENCODER_TVDAC, "TV" },
180 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
181 { DRM_MODE_ENCODER_DSI, "DSI" },
182 { DRM_MODE_ENCODER_DPMST, "DP MST" },
183 { DRM_MODE_ENCODER_DPI, "DPI" },
186 static const struct drm_prop_enum_list drm_subpixel_enum_list[] = {
187 { SubPixelUnknown, "Unknown" },
188 { SubPixelHorizontalRGB, "Horizontal RGB" },
189 { SubPixelHorizontalBGR, "Horizontal BGR" },
190 { SubPixelVerticalRGB, "Vertical RGB" },
191 { SubPixelVerticalBGR, "Vertical BGR" },
192 { SubPixelNone, "None" },
195 void drm_connector_ida_init(void)
199 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
200 ida_init(&drm_connector_enum_list[i].ida);
203 void drm_connector_ida_destroy(void)
207 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
208 ida_destroy(&drm_connector_enum_list[i].ida);
212 * drm_get_connector_status_name - return a string for connector status
213 * @status: connector status to compute name of
215 * In contrast to the other drm_get_*_name functions this one here returns a
216 * const pointer and hence is threadsafe.
218 const char *drm_get_connector_status_name(enum drm_connector_status status)
220 if (status == connector_status_connected)
222 else if (status == connector_status_disconnected)
223 return "disconnected";
227 EXPORT_SYMBOL(drm_get_connector_status_name);
230 * drm_get_subpixel_order_name - return a string for a given subpixel enum
231 * @order: enum of subpixel_order
233 * Note you could abuse this and return something out of bounds, but that
234 * would be a caller error. No unscrubbed user data should make it here.
236 const char *drm_get_subpixel_order_name(enum subpixel_order order)
238 return drm_subpixel_enum_list[order].name;
240 EXPORT_SYMBOL(drm_get_subpixel_order_name);
242 static char printable_char(int c)
244 return isascii(c) && isprint(c) ? c : '?';
248 * drm_get_format_name - return a string for drm fourcc format
249 * @format: format to compute name of
251 * Note that the buffer used by this function is globally shared and owned by
252 * the function itself.
254 * FIXME: This isn't really multithreading safe.
256 const char *drm_get_format_name(uint32_t format)
260 snprintf(buf, sizeof(buf),
261 "%c%c%c%c %s-endian (0x%08x)",
262 printable_char(format & 0xff),
263 printable_char((format >> 8) & 0xff),
264 printable_char((format >> 16) & 0xff),
265 printable_char((format >> 24) & 0x7f),
266 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
271 EXPORT_SYMBOL(drm_get_format_name);
274 * Internal function to assign a slot in the object idr and optionally
275 * register the object into the idr.
277 static int drm_mode_object_get_reg(struct drm_device *dev,
278 struct drm_mode_object *obj,
281 void (*obj_free_cb)(struct kref *kref))
285 mutex_lock(&dev->mode_config.idr_mutex);
286 ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
289 * Set up the object linking under the protection of the idr
290 * lock so that other users can't see inconsistent state.
293 obj->type = obj_type;
295 obj->free_cb = obj_free_cb;
296 kref_init(&obj->refcount);
299 mutex_unlock(&dev->mode_config.idr_mutex);
301 return ret < 0 ? ret : 0;
305 * drm_mode_object_get - allocate a new modeset identifier
307 * @obj: object pointer, used to generate unique ID
308 * @obj_type: object type
310 * Create a unique identifier based on @ptr in @dev's identifier space. Used
311 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
312 * modeset identifiers are _not_ reference counted. Hence don't use this for
313 * reference counted modeset objects like framebuffers.
316 * Zero on success, error code on failure.
318 int drm_mode_object_get(struct drm_device *dev,
319 struct drm_mode_object *obj, uint32_t obj_type)
321 return drm_mode_object_get_reg(dev, obj, obj_type, true, NULL);
324 static void drm_mode_object_register(struct drm_device *dev,
325 struct drm_mode_object *obj)
327 mutex_lock(&dev->mode_config.idr_mutex);
328 idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
329 mutex_unlock(&dev->mode_config.idr_mutex);
333 * drm_mode_object_unregister - free a modeset identifer
335 * @object: object to free
337 * Free @id from @dev's unique identifier pool.
338 * This function can be called multiple times, and guards against
340 * These modeset identifiers are _not_ reference counted. Hence don't use this
341 * for reference counted modeset objects like framebuffers.
343 void drm_mode_object_unregister(struct drm_device *dev,
344 struct drm_mode_object *object)
346 mutex_lock(&dev->mode_config.idr_mutex);
348 idr_remove(&dev->mode_config.crtc_idr, object->id);
351 mutex_unlock(&dev->mode_config.idr_mutex);
354 static struct drm_mode_object *_object_find(struct drm_device *dev,
355 uint32_t id, uint32_t type)
357 struct drm_mode_object *obj = NULL;
359 mutex_lock(&dev->mode_config.idr_mutex);
360 obj = idr_find(&dev->mode_config.crtc_idr, id);
361 if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
363 if (obj && obj->id != id)
366 if (obj && obj->free_cb) {
367 if (!kref_get_unless_zero(&obj->refcount))
370 mutex_unlock(&dev->mode_config.idr_mutex);
376 * drm_mode_object_find - look up a drm object with static lifetime
378 * @id: id of the mode object
379 * @type: type of the mode object
381 * This function is used to look up a modeset object. It will acquire a
382 * reference for reference counted objects. This reference must be dropped again
383 * by callind drm_mode_object_unreference().
385 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
386 uint32_t id, uint32_t type)
388 struct drm_mode_object *obj = NULL;
390 obj = _object_find(dev, id, type);
393 EXPORT_SYMBOL(drm_mode_object_find);
396 * drm_mode_object_unreference - decr the object refcnt
399 * This functions decrements the object's refcount if it is a refcounted modeset
400 * object. It is a no-op on any other object. This is used to drop references
401 * acquired with drm_mode_object_reference().
403 void drm_mode_object_unreference(struct drm_mode_object *obj)
406 DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, atomic_read(&obj->refcount.refcount));
407 kref_put(&obj->refcount, obj->free_cb);
410 EXPORT_SYMBOL(drm_mode_object_unreference);
413 * drm_mode_object_reference - incr the object refcnt
416 * This functions increments the object's refcount if it is a refcounted modeset
417 * object. It is a no-op on any other object. References should be dropped again
418 * by calling drm_mode_object_unreference().
420 void drm_mode_object_reference(struct drm_mode_object *obj)
423 DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, atomic_read(&obj->refcount.refcount));
424 kref_get(&obj->refcount);
427 EXPORT_SYMBOL(drm_mode_object_reference);
429 static void drm_framebuffer_free(struct kref *kref)
431 struct drm_framebuffer *fb =
432 container_of(kref, struct drm_framebuffer, base.refcount);
433 struct drm_device *dev = fb->dev;
436 * The lookup idr holds a weak reference, which has not necessarily been
437 * removed at this point. Check for that.
439 drm_mode_object_unregister(dev, &fb->base);
441 fb->funcs->destroy(fb);
445 * drm_framebuffer_init - initialize a framebuffer
447 * @fb: framebuffer to be initialized
448 * @funcs: ... with these functions
450 * Allocates an ID for the framebuffer's parent mode object, sets its mode
451 * functions & device file and adds it to the master fd list.
454 * This functions publishes the fb and makes it available for concurrent access
455 * by other users. Which means by this point the fb _must_ be fully set up -
456 * since all the fb attributes are invariant over its lifetime, no further
457 * locking but only correct reference counting is required.
460 * Zero on success, error code on failure.
462 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
463 const struct drm_framebuffer_funcs *funcs)
467 INIT_LIST_HEAD(&fb->filp_head);
471 ret = drm_mode_object_get_reg(dev, &fb->base, DRM_MODE_OBJECT_FB,
472 false, drm_framebuffer_free);
476 mutex_lock(&dev->mode_config.fb_lock);
477 dev->mode_config.num_fb++;
478 list_add(&fb->head, &dev->mode_config.fb_list);
479 mutex_unlock(&dev->mode_config.fb_lock);
481 drm_mode_object_register(dev, &fb->base);
485 EXPORT_SYMBOL(drm_framebuffer_init);
488 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
490 * @id: id of the fb object
492 * If successful, this grabs an additional reference to the framebuffer -
493 * callers need to make sure to eventually unreference the returned framebuffer
494 * again, using @drm_framebuffer_unreference.
496 struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
499 struct drm_mode_object *obj;
500 struct drm_framebuffer *fb = NULL;
502 obj = _object_find(dev, id, DRM_MODE_OBJECT_FB);
507 EXPORT_SYMBOL(drm_framebuffer_lookup);
510 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
511 * @fb: fb to unregister
513 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
514 * those used for fbdev. Note that the caller must hold a reference of it's own,
515 * i.e. the object may not be destroyed through this call (since it'll lead to a
516 * locking inversion).
518 void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
520 struct drm_device *dev;
527 /* Mark fb as reaped and drop idr ref. */
528 drm_mode_object_unregister(dev, &fb->base);
530 EXPORT_SYMBOL(drm_framebuffer_unregister_private);
533 * drm_framebuffer_cleanup - remove a framebuffer object
534 * @fb: framebuffer to remove
536 * Cleanup framebuffer. This function is intended to be used from the drivers
537 * ->destroy callback. It can also be used to clean up driver private
538 * framebuffers embedded into a larger structure.
540 * Note that this function does not remove the fb from active usuage - if it is
541 * still used anywhere, hilarity can ensue since userspace could call getfb on
542 * the id and get back -EINVAL. Obviously no concern at driver unload time.
544 * Also, the framebuffer will not be removed from the lookup idr - for
545 * user-created framebuffers this will happen in in the rmfb ioctl. For
546 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
547 * drm_framebuffer_unregister_private.
549 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
551 struct drm_device *dev = fb->dev;
553 mutex_lock(&dev->mode_config.fb_lock);
555 dev->mode_config.num_fb--;
556 mutex_unlock(&dev->mode_config.fb_lock);
558 EXPORT_SYMBOL(drm_framebuffer_cleanup);
561 * drm_framebuffer_remove - remove and unreference a framebuffer object
562 * @fb: framebuffer to remove
564 * Scans all the CRTCs and planes in @dev's mode_config. If they're
565 * using @fb, removes it, setting it to NULL. Then drops the reference to the
566 * passed-in framebuffer. Might take the modeset locks.
568 * Note that this function optimizes the cleanup away if the caller holds the
569 * last reference to the framebuffer. It is also guaranteed to not take the
570 * modeset locks in this case.
572 void drm_framebuffer_remove(struct drm_framebuffer *fb)
574 struct drm_device *dev;
575 struct drm_crtc *crtc;
576 struct drm_plane *plane;
577 struct drm_mode_set set;
585 WARN_ON(!list_empty(&fb->filp_head));
588 * drm ABI mandates that we remove any deleted framebuffers from active
589 * useage. But since most sane clients only remove framebuffers they no
590 * longer need, try to optimize this away.
592 * Since we're holding a reference ourselves, observing a refcount of 1
593 * means that we're the last holder and can skip it. Also, the refcount
594 * can never increase from 1 again, so we don't need any barriers or
597 * Note that userspace could try to race with use and instate a new
598 * usage _after_ we've cleared all current ones. End result will be an
599 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
602 if (drm_framebuffer_read_refcount(fb) > 1) {
603 drm_modeset_lock_all(dev);
604 /* remove from any CRTC */
605 drm_for_each_crtc(crtc, dev) {
606 if (crtc->primary->fb == fb) {
607 /* should turn off the crtc */
608 memset(&set, 0, sizeof(struct drm_mode_set));
611 ret = drm_mode_set_config_internal(&set);
613 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
617 drm_for_each_plane(plane, dev) {
619 drm_plane_force_disable(plane);
621 drm_modeset_unlock_all(dev);
624 drm_framebuffer_unreference(fb);
626 EXPORT_SYMBOL(drm_framebuffer_remove);
628 DEFINE_WW_CLASS(crtc_ww_class);
630 static unsigned int drm_num_crtcs(struct drm_device *dev)
632 unsigned int num = 0;
633 struct drm_crtc *tmp;
635 drm_for_each_crtc(tmp, dev) {
643 * drm_crtc_init_with_planes - Initialise a new CRTC object with
644 * specified primary and cursor planes.
646 * @crtc: CRTC object to init
647 * @primary: Primary plane for CRTC
648 * @cursor: Cursor plane for CRTC
649 * @funcs: callbacks for the new CRTC
650 * @name: printf style format string for the CRTC name, or NULL for default name
652 * Inits a new object created as base part of a driver crtc object.
655 * Zero on success, error code on failure.
657 int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
658 struct drm_plane *primary,
659 struct drm_plane *cursor,
660 const struct drm_crtc_funcs *funcs,
661 const char *name, ...)
663 struct drm_mode_config *config = &dev->mode_config;
666 WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY);
667 WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR);
672 drm_modeset_lock_init(&crtc->mutex);
673 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
681 crtc->name = kvasprintf(GFP_KERNEL, name, ap);
684 crtc->name = kasprintf(GFP_KERNEL, "crtc-%d",
688 drm_mode_object_unregister(dev, &crtc->base);
692 crtc->base.properties = &crtc->properties;
694 list_add_tail(&crtc->head, &config->crtc_list);
697 crtc->primary = primary;
698 crtc->cursor = cursor;
700 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
702 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
704 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
705 drm_object_attach_property(&crtc->base, config->prop_active, 0);
706 drm_object_attach_property(&crtc->base, config->prop_mode_id, 0);
711 EXPORT_SYMBOL(drm_crtc_init_with_planes);
714 * drm_crtc_cleanup - Clean up the core crtc usage
715 * @crtc: CRTC to cleanup
717 * This function cleans up @crtc and removes it from the DRM mode setting
718 * core. Note that the function does *not* free the crtc structure itself,
719 * this is the responsibility of the caller.
721 void drm_crtc_cleanup(struct drm_crtc *crtc)
723 struct drm_device *dev = crtc->dev;
725 kfree(crtc->gamma_store);
726 crtc->gamma_store = NULL;
728 drm_modeset_lock_fini(&crtc->mutex);
730 drm_mode_object_unregister(dev, &crtc->base);
731 list_del(&crtc->head);
732 dev->mode_config.num_crtc--;
734 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
735 if (crtc->state && crtc->funcs->atomic_destroy_state)
736 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
740 memset(crtc, 0, sizeof(*crtc));
742 EXPORT_SYMBOL(drm_crtc_cleanup);
745 * drm_crtc_index - find the index of a registered CRTC
746 * @crtc: CRTC to find index for
748 * Given a registered CRTC, return the index of that CRTC within a DRM
749 * device's list of CRTCs.
751 unsigned int drm_crtc_index(struct drm_crtc *crtc)
753 unsigned int index = 0;
754 struct drm_crtc *tmp;
756 drm_for_each_crtc(tmp, crtc->dev) {
765 EXPORT_SYMBOL(drm_crtc_index);
768 * drm_mode_remove - remove and free a mode
769 * @connector: connector list to modify
770 * @mode: mode to remove
772 * Remove @mode from @connector's mode list, then free it.
774 static void drm_mode_remove(struct drm_connector *connector,
775 struct drm_display_mode *mode)
777 list_del(&mode->head);
778 drm_mode_destroy(connector->dev, mode);
782 * drm_display_info_set_bus_formats - set the supported bus formats
783 * @info: display info to store bus formats in
784 * @formats: array containing the supported bus formats
785 * @num_formats: the number of entries in the fmts array
787 * Store the supported bus formats in display info structure.
788 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
789 * a full list of available formats.
791 int drm_display_info_set_bus_formats(struct drm_display_info *info,
793 unsigned int num_formats)
797 if (!formats && num_formats)
800 if (formats && num_formats) {
801 fmts = kmemdup(formats, sizeof(*formats) * num_formats,
807 kfree(info->bus_formats);
808 info->bus_formats = fmts;
809 info->num_bus_formats = num_formats;
813 EXPORT_SYMBOL(drm_display_info_set_bus_formats);
816 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
817 * @connector: connector to quwery
819 * The kernel supports per-connector configration of its consoles through
820 * use of the video= parameter. This function parses that option and
821 * extracts the user's specified mode (or enable/disable status) for a
822 * particular connector. This is typically only used during the early fbdev
825 static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
827 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
830 if (fb_get_options(connector->name, &option))
833 if (!drm_mode_parse_command_line_for_connector(option,
841 switch (mode->force) {
845 case DRM_FORCE_ON_DIGITAL:
854 DRM_INFO("forcing %s connector %s\n", connector->name, s);
855 connector->force = mode->force;
858 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
860 mode->xres, mode->yres,
861 mode->refresh_specified ? mode->refresh : 60,
862 mode->rb ? " reduced blanking" : "",
863 mode->margins ? " with margins" : "",
864 mode->interlace ? " interlaced" : "");
868 * drm_connector_init - Init a preallocated connector
870 * @connector: the connector to init
871 * @funcs: callbacks for this connector
872 * @connector_type: user visible type of the connector
874 * Initialises a preallocated connector. Connectors should be
875 * subclassed as part of driver connector objects.
878 * Zero on success, error code on failure.
880 int drm_connector_init(struct drm_device *dev,
881 struct drm_connector *connector,
882 const struct drm_connector_funcs *funcs,
885 struct drm_mode_config *config = &dev->mode_config;
887 struct ida *connector_ida =
888 &drm_connector_enum_list[connector_type].ida;
890 drm_modeset_lock_all(dev);
892 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false, NULL);
896 connector->base.properties = &connector->properties;
897 connector->dev = dev;
898 connector->funcs = funcs;
900 connector->connector_id = ida_simple_get(&config->connector_ida, 0, 0, GFP_KERNEL);
901 if (connector->connector_id < 0) {
902 ret = connector->connector_id;
906 connector->connector_type = connector_type;
907 connector->connector_type_id =
908 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
909 if (connector->connector_type_id < 0) {
910 ret = connector->connector_type_id;
914 kasprintf(GFP_KERNEL, "%s-%d",
915 drm_connector_enum_list[connector_type].name,
916 connector->connector_type_id);
917 if (!connector->name) {
919 goto out_put_type_id;
922 INIT_LIST_HEAD(&connector->probed_modes);
923 INIT_LIST_HEAD(&connector->modes);
924 connector->edid_blob_ptr = NULL;
925 connector->status = connector_status_unknown;
927 drm_connector_get_cmdline_mode(connector);
929 /* We should add connectors at the end to avoid upsetting the connector
931 list_add_tail(&connector->head, &config->connector_list);
932 config->num_connector++;
934 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
935 drm_object_attach_property(&connector->base,
936 config->edid_property,
939 drm_object_attach_property(&connector->base,
940 config->dpms_property, 0);
942 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
943 drm_object_attach_property(&connector->base, config->prop_crtc_id, 0);
946 connector->debugfs_entry = NULL;
949 ida_remove(connector_ida, connector->connector_type_id);
952 ida_remove(&config->connector_ida, connector->connector_id);
955 drm_mode_object_unregister(dev, &connector->base);
958 drm_modeset_unlock_all(dev);
962 EXPORT_SYMBOL(drm_connector_init);
965 * drm_connector_cleanup - cleans up an initialised connector
966 * @connector: connector to cleanup
968 * Cleans up the connector but doesn't free the object.
970 void drm_connector_cleanup(struct drm_connector *connector)
972 struct drm_device *dev = connector->dev;
973 struct drm_display_mode *mode, *t;
975 if (connector->tile_group) {
976 drm_mode_put_tile_group(dev, connector->tile_group);
977 connector->tile_group = NULL;
980 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
981 drm_mode_remove(connector, mode);
983 list_for_each_entry_safe(mode, t, &connector->modes, head)
984 drm_mode_remove(connector, mode);
986 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
987 connector->connector_type_id);
989 ida_remove(&dev->mode_config.connector_ida,
990 connector->connector_id);
992 kfree(connector->display_info.bus_formats);
993 drm_mode_object_unregister(dev, &connector->base);
994 kfree(connector->name);
995 connector->name = NULL;
996 list_del(&connector->head);
997 dev->mode_config.num_connector--;
999 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
1000 if (connector->state && connector->funcs->atomic_destroy_state)
1001 connector->funcs->atomic_destroy_state(connector,
1004 memset(connector, 0, sizeof(*connector));
1006 EXPORT_SYMBOL(drm_connector_cleanup);
1009 * drm_connector_register - register a connector
1010 * @connector: the connector to register
1012 * Register userspace interfaces for a connector
1015 * Zero on success, error code on failure.
1017 int drm_connector_register(struct drm_connector *connector)
1021 drm_mode_object_register(connector->dev, &connector->base);
1023 ret = drm_sysfs_connector_add(connector);
1027 ret = drm_debugfs_connector_add(connector);
1029 drm_sysfs_connector_remove(connector);
1035 EXPORT_SYMBOL(drm_connector_register);
1038 * drm_connector_unregister - unregister a connector
1039 * @connector: the connector to unregister
1041 * Unregister userspace interfaces for a connector
1043 void drm_connector_unregister(struct drm_connector *connector)
1045 drm_sysfs_connector_remove(connector);
1046 drm_debugfs_connector_remove(connector);
1048 EXPORT_SYMBOL(drm_connector_unregister);
1051 * drm_connector_register_all - register all connectors
1054 * This function registers all connectors in sysfs and other places so that
1055 * userspace can start to access them. Drivers can call it after calling
1056 * drm_dev_register() to complete the device registration, if they don't call
1057 * drm_connector_register() on each connector individually.
1059 * When a device is unplugged and should be removed from userspace access,
1060 * call drm_connector_unregister_all(), which is the inverse of this
1064 * Zero on success, error code on failure.
1066 int drm_connector_register_all(struct drm_device *dev)
1068 struct drm_connector *connector;
1071 mutex_lock(&dev->mode_config.mutex);
1073 drm_for_each_connector(connector, dev) {
1074 ret = drm_connector_register(connector);
1079 mutex_unlock(&dev->mode_config.mutex);
1084 mutex_unlock(&dev->mode_config.mutex);
1085 drm_connector_unregister_all(dev);
1088 EXPORT_SYMBOL(drm_connector_register_all);
1091 * drm_connector_unregister_all - unregister connector userspace interfaces
1094 * This functions unregisters all connectors from sysfs and other places so
1095 * that userspace can no longer access them. Drivers should call this as the
1096 * first step tearing down the device instace, or when the underlying
1097 * physical device disappeared (e.g. USB unplug), right before calling
1098 * drm_dev_unregister().
1100 void drm_connector_unregister_all(struct drm_device *dev)
1102 struct drm_connector *connector;
1104 /* FIXME: taking the mode config mutex ends up in a clash with sysfs */
1105 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1106 drm_connector_unregister(connector);
1108 EXPORT_SYMBOL(drm_connector_unregister_all);
1111 * drm_encoder_init - Init a preallocated encoder
1113 * @encoder: the encoder to init
1114 * @funcs: callbacks for this encoder
1115 * @encoder_type: user visible type of the encoder
1116 * @name: printf style format string for the encoder name, or NULL for default name
1118 * Initialises a preallocated encoder. Encoder should be
1119 * subclassed as part of driver encoder objects.
1122 * Zero on success, error code on failure.
1124 int drm_encoder_init(struct drm_device *dev,
1125 struct drm_encoder *encoder,
1126 const struct drm_encoder_funcs *funcs,
1127 int encoder_type, const char *name, ...)
1131 drm_modeset_lock_all(dev);
1133 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1138 encoder->encoder_type = encoder_type;
1139 encoder->funcs = funcs;
1144 encoder->name = kvasprintf(GFP_KERNEL, name, ap);
1147 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1148 drm_encoder_enum_list[encoder_type].name,
1151 if (!encoder->name) {
1156 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1157 dev->mode_config.num_encoder++;
1161 drm_mode_object_unregister(dev, &encoder->base);
1164 drm_modeset_unlock_all(dev);
1168 EXPORT_SYMBOL(drm_encoder_init);
1171 * drm_encoder_index - find the index of a registered encoder
1172 * @encoder: encoder to find index for
1174 * Given a registered encoder, return the index of that encoder within a DRM
1175 * device's list of encoders.
1177 unsigned int drm_encoder_index(struct drm_encoder *encoder)
1179 unsigned int index = 0;
1180 struct drm_encoder *tmp;
1182 drm_for_each_encoder(tmp, encoder->dev) {
1191 EXPORT_SYMBOL(drm_encoder_index);
1194 * drm_encoder_cleanup - cleans up an initialised encoder
1195 * @encoder: encoder to cleanup
1197 * Cleans up the encoder but doesn't free the object.
1199 void drm_encoder_cleanup(struct drm_encoder *encoder)
1201 struct drm_device *dev = encoder->dev;
1203 drm_modeset_lock_all(dev);
1204 drm_mode_object_unregister(dev, &encoder->base);
1205 kfree(encoder->name);
1206 list_del(&encoder->head);
1207 dev->mode_config.num_encoder--;
1208 drm_modeset_unlock_all(dev);
1210 memset(encoder, 0, sizeof(*encoder));
1212 EXPORT_SYMBOL(drm_encoder_cleanup);
1214 static unsigned int drm_num_planes(struct drm_device *dev)
1216 unsigned int num = 0;
1217 struct drm_plane *tmp;
1219 drm_for_each_plane(tmp, dev) {
1227 * drm_universal_plane_init - Initialize a new universal plane object
1229 * @plane: plane object to init
1230 * @possible_crtcs: bitmask of possible CRTCs
1231 * @funcs: callbacks for the new plane
1232 * @formats: array of supported formats (%DRM_FORMAT_*)
1233 * @format_count: number of elements in @formats
1234 * @type: type of plane (overlay, primary, cursor)
1235 * @name: printf style format string for the plane name, or NULL for default name
1237 * Initializes a plane object of type @type.
1240 * Zero on success, error code on failure.
1242 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1243 unsigned long possible_crtcs,
1244 const struct drm_plane_funcs *funcs,
1245 const uint32_t *formats, unsigned int format_count,
1246 enum drm_plane_type type,
1247 const char *name, ...)
1249 struct drm_mode_config *config = &dev->mode_config;
1252 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1256 drm_modeset_lock_init(&plane->mutex);
1258 plane->base.properties = &plane->properties;
1260 plane->funcs = funcs;
1261 plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
1263 if (!plane->format_types) {
1264 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1265 drm_mode_object_unregister(dev, &plane->base);
1273 plane->name = kvasprintf(GFP_KERNEL, name, ap);
1276 plane->name = kasprintf(GFP_KERNEL, "plane-%d",
1277 drm_num_planes(dev));
1280 kfree(plane->format_types);
1281 drm_mode_object_unregister(dev, &plane->base);
1285 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1286 plane->format_count = format_count;
1287 plane->possible_crtcs = possible_crtcs;
1290 list_add_tail(&plane->head, &config->plane_list);
1291 config->num_total_plane++;
1292 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1293 config->num_overlay_plane++;
1295 drm_object_attach_property(&plane->base,
1296 config->plane_type_property,
1299 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
1300 drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
1301 drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
1302 drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
1303 drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
1304 drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
1305 drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
1306 drm_object_attach_property(&plane->base, config->prop_src_x, 0);
1307 drm_object_attach_property(&plane->base, config->prop_src_y, 0);
1308 drm_object_attach_property(&plane->base, config->prop_src_w, 0);
1309 drm_object_attach_property(&plane->base, config->prop_src_h, 0);
1314 EXPORT_SYMBOL(drm_universal_plane_init);
1317 * drm_plane_init - Initialize a legacy plane
1319 * @plane: plane object to init
1320 * @possible_crtcs: bitmask of possible CRTCs
1321 * @funcs: callbacks for the new plane
1322 * @formats: array of supported formats (%DRM_FORMAT_*)
1323 * @format_count: number of elements in @formats
1324 * @is_primary: plane type (primary vs overlay)
1326 * Legacy API to initialize a DRM plane.
1328 * New drivers should call drm_universal_plane_init() instead.
1331 * Zero on success, error code on failure.
1333 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1334 unsigned long possible_crtcs,
1335 const struct drm_plane_funcs *funcs,
1336 const uint32_t *formats, unsigned int format_count,
1339 enum drm_plane_type type;
1341 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1342 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1343 formats, format_count, type, NULL);
1345 EXPORT_SYMBOL(drm_plane_init);
1348 * drm_plane_cleanup - Clean up the core plane usage
1349 * @plane: plane to cleanup
1351 * This function cleans up @plane and removes it from the DRM mode setting
1352 * core. Note that the function does *not* free the plane structure itself,
1353 * this is the responsibility of the caller.
1355 void drm_plane_cleanup(struct drm_plane *plane)
1357 struct drm_device *dev = plane->dev;
1359 drm_modeset_lock_all(dev);
1360 kfree(plane->format_types);
1361 drm_mode_object_unregister(dev, &plane->base);
1363 BUG_ON(list_empty(&plane->head));
1365 list_del(&plane->head);
1366 dev->mode_config.num_total_plane--;
1367 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1368 dev->mode_config.num_overlay_plane--;
1369 drm_modeset_unlock_all(dev);
1371 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1372 if (plane->state && plane->funcs->atomic_destroy_state)
1373 plane->funcs->atomic_destroy_state(plane, plane->state);
1377 memset(plane, 0, sizeof(*plane));
1379 EXPORT_SYMBOL(drm_plane_cleanup);
1382 * drm_plane_index - find the index of a registered plane
1383 * @plane: plane to find index for
1385 * Given a registered plane, return the index of that CRTC within a DRM
1386 * device's list of planes.
1388 unsigned int drm_plane_index(struct drm_plane *plane)
1390 unsigned int index = 0;
1391 struct drm_plane *tmp;
1393 drm_for_each_plane(tmp, plane->dev) {
1402 EXPORT_SYMBOL(drm_plane_index);
1405 * drm_plane_from_index - find the registered plane at an index
1407 * @idx: index of registered plane to find for
1409 * Given a plane index, return the registered plane from DRM device's
1410 * list of planes with matching index.
1413 drm_plane_from_index(struct drm_device *dev, int idx)
1415 struct drm_plane *plane;
1418 drm_for_each_plane(plane, dev) {
1425 EXPORT_SYMBOL(drm_plane_from_index);
1428 * drm_plane_force_disable - Forcibly disable a plane
1429 * @plane: plane to disable
1431 * Forces the plane to be disabled.
1433 * Used when the plane's current framebuffer is destroyed,
1434 * and when restoring fbdev mode.
1436 void drm_plane_force_disable(struct drm_plane *plane)
1443 plane->old_fb = plane->fb;
1444 ret = plane->funcs->disable_plane(plane);
1446 DRM_ERROR("failed to disable plane with busy fb\n");
1447 plane->old_fb = NULL;
1450 /* disconnect the plane from the fb and crtc: */
1451 drm_framebuffer_unreference(plane->old_fb);
1452 plane->old_fb = NULL;
1456 EXPORT_SYMBOL(drm_plane_force_disable);
1458 static int drm_mode_create_standard_properties(struct drm_device *dev)
1460 struct drm_property *prop;
1463 * Standard properties (apply to all connectors)
1465 prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1466 DRM_MODE_PROP_IMMUTABLE,
1470 dev->mode_config.edid_property = prop;
1472 prop = drm_property_create_enum(dev, 0,
1473 "DPMS", drm_dpms_enum_list,
1474 ARRAY_SIZE(drm_dpms_enum_list));
1477 dev->mode_config.dpms_property = prop;
1479 prop = drm_property_create(dev,
1480 DRM_MODE_PROP_BLOB |
1481 DRM_MODE_PROP_IMMUTABLE,
1485 dev->mode_config.path_property = prop;
1487 prop = drm_property_create(dev,
1488 DRM_MODE_PROP_BLOB |
1489 DRM_MODE_PROP_IMMUTABLE,
1493 dev->mode_config.tile_property = prop;
1495 prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1496 "type", drm_plane_type_enum_list,
1497 ARRAY_SIZE(drm_plane_type_enum_list));
1500 dev->mode_config.plane_type_property = prop;
1502 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1503 "SRC_X", 0, UINT_MAX);
1506 dev->mode_config.prop_src_x = prop;
1508 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1509 "SRC_Y", 0, UINT_MAX);
1512 dev->mode_config.prop_src_y = prop;
1514 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1515 "SRC_W", 0, UINT_MAX);
1518 dev->mode_config.prop_src_w = prop;
1520 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1521 "SRC_H", 0, UINT_MAX);
1524 dev->mode_config.prop_src_h = prop;
1526 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1527 "CRTC_X", INT_MIN, INT_MAX);
1530 dev->mode_config.prop_crtc_x = prop;
1532 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1533 "CRTC_Y", INT_MIN, INT_MAX);
1536 dev->mode_config.prop_crtc_y = prop;
1538 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1539 "CRTC_W", 0, INT_MAX);
1542 dev->mode_config.prop_crtc_w = prop;
1544 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1545 "CRTC_H", 0, INT_MAX);
1548 dev->mode_config.prop_crtc_h = prop;
1550 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1551 "FB_ID", DRM_MODE_OBJECT_FB);
1554 dev->mode_config.prop_fb_id = prop;
1556 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1557 "CRTC_ID", DRM_MODE_OBJECT_CRTC);
1560 dev->mode_config.prop_crtc_id = prop;
1562 prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
1566 dev->mode_config.prop_active = prop;
1568 prop = drm_property_create(dev,
1569 DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB,
1573 dev->mode_config.prop_mode_id = prop;
1575 prop = drm_property_create(dev,
1580 dev->mode_config.degamma_lut_property = prop;
1582 prop = drm_property_create_range(dev,
1583 DRM_MODE_PROP_IMMUTABLE,
1584 "DEGAMMA_LUT_SIZE", 0, UINT_MAX);
1587 dev->mode_config.degamma_lut_size_property = prop;
1589 prop = drm_property_create(dev,
1594 dev->mode_config.ctm_property = prop;
1596 prop = drm_property_create(dev,
1601 dev->mode_config.gamma_lut_property = prop;
1603 prop = drm_property_create_range(dev,
1604 DRM_MODE_PROP_IMMUTABLE,
1605 "GAMMA_LUT_SIZE", 0, UINT_MAX);
1608 dev->mode_config.gamma_lut_size_property = prop;
1614 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1617 * Called by a driver the first time a DVI-I connector is made.
1619 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1621 struct drm_property *dvi_i_selector;
1622 struct drm_property *dvi_i_subconnector;
1624 if (dev->mode_config.dvi_i_select_subconnector_property)
1628 drm_property_create_enum(dev, 0,
1629 "select subconnector",
1630 drm_dvi_i_select_enum_list,
1631 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1632 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1634 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1636 drm_dvi_i_subconnector_enum_list,
1637 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1638 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1642 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1645 * drm_create_tv_properties - create TV specific connector properties
1647 * @num_modes: number of different TV formats (modes) supported
1648 * @modes: array of pointers to strings containing name of each format
1650 * Called by a driver's TV initialization routine, this function creates
1651 * the TV specific connector properties for a given device. Caller is
1652 * responsible for allocating a list of format names and passing them to
1655 int drm_mode_create_tv_properties(struct drm_device *dev,
1656 unsigned int num_modes,
1657 const char * const modes[])
1659 struct drm_property *tv_selector;
1660 struct drm_property *tv_subconnector;
1663 if (dev->mode_config.tv_select_subconnector_property)
1667 * Basic connector properties
1669 tv_selector = drm_property_create_enum(dev, 0,
1670 "select subconnector",
1671 drm_tv_select_enum_list,
1672 ARRAY_SIZE(drm_tv_select_enum_list));
1676 dev->mode_config.tv_select_subconnector_property = tv_selector;
1679 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1681 drm_tv_subconnector_enum_list,
1682 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1683 if (!tv_subconnector)
1685 dev->mode_config.tv_subconnector_property = tv_subconnector;
1688 * Other, TV specific properties: margins & TV modes.
1690 dev->mode_config.tv_left_margin_property =
1691 drm_property_create_range(dev, 0, "left margin", 0, 100);
1692 if (!dev->mode_config.tv_left_margin_property)
1695 dev->mode_config.tv_right_margin_property =
1696 drm_property_create_range(dev, 0, "right margin", 0, 100);
1697 if (!dev->mode_config.tv_right_margin_property)
1700 dev->mode_config.tv_top_margin_property =
1701 drm_property_create_range(dev, 0, "top margin", 0, 100);
1702 if (!dev->mode_config.tv_top_margin_property)
1705 dev->mode_config.tv_bottom_margin_property =
1706 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1707 if (!dev->mode_config.tv_bottom_margin_property)
1710 dev->mode_config.tv_mode_property =
1711 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1713 if (!dev->mode_config.tv_mode_property)
1716 for (i = 0; i < num_modes; i++)
1717 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1720 dev->mode_config.tv_brightness_property =
1721 drm_property_create_range(dev, 0, "brightness", 0, 100);
1722 if (!dev->mode_config.tv_brightness_property)
1725 dev->mode_config.tv_contrast_property =
1726 drm_property_create_range(dev, 0, "contrast", 0, 100);
1727 if (!dev->mode_config.tv_contrast_property)
1730 dev->mode_config.tv_flicker_reduction_property =
1731 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1732 if (!dev->mode_config.tv_flicker_reduction_property)
1735 dev->mode_config.tv_overscan_property =
1736 drm_property_create_range(dev, 0, "overscan", 0, 100);
1737 if (!dev->mode_config.tv_overscan_property)
1740 dev->mode_config.tv_saturation_property =
1741 drm_property_create_range(dev, 0, "saturation", 0, 100);
1742 if (!dev->mode_config.tv_saturation_property)
1745 dev->mode_config.tv_hue_property =
1746 drm_property_create_range(dev, 0, "hue", 0, 100);
1747 if (!dev->mode_config.tv_hue_property)
1754 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1757 * drm_mode_create_scaling_mode_property - create scaling mode property
1760 * Called by a driver the first time it's needed, must be attached to desired
1763 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1765 struct drm_property *scaling_mode;
1767 if (dev->mode_config.scaling_mode_property)
1771 drm_property_create_enum(dev, 0, "scaling mode",
1772 drm_scaling_mode_enum_list,
1773 ARRAY_SIZE(drm_scaling_mode_enum_list));
1775 dev->mode_config.scaling_mode_property = scaling_mode;
1779 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1782 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1785 * Called by a driver the first time it's needed, must be attached to desired
1789 * Zero on success, negative errno on failure.
1791 int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1793 if (dev->mode_config.aspect_ratio_property)
1796 dev->mode_config.aspect_ratio_property =
1797 drm_property_create_enum(dev, 0, "aspect ratio",
1798 drm_aspect_ratio_enum_list,
1799 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1801 if (dev->mode_config.aspect_ratio_property == NULL)
1806 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1809 * drm_mode_create_dirty_property - create dirty property
1812 * Called by a driver the first time it's needed, must be attached to desired
1815 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1817 struct drm_property *dirty_info;
1819 if (dev->mode_config.dirty_info_property)
1823 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1825 drm_dirty_info_enum_list,
1826 ARRAY_SIZE(drm_dirty_info_enum_list));
1827 dev->mode_config.dirty_info_property = dirty_info;
1831 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1834 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1837 * Create the the suggested x/y offset property for connectors.
1839 int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1841 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1844 dev->mode_config.suggested_x_property =
1845 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1847 dev->mode_config.suggested_y_property =
1848 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1850 if (dev->mode_config.suggested_x_property == NULL ||
1851 dev->mode_config.suggested_y_property == NULL)
1855 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1858 * drm_mode_getresources - get graphics configuration
1859 * @dev: drm device for the ioctl
1860 * @data: data pointer for the ioctl
1861 * @file_priv: drm file for the ioctl call
1863 * Construct a set of configuration description structures and return
1864 * them to the user, including CRTC, connector and framebuffer configuration.
1866 * Called by the user via ioctl.
1869 * Zero on success, negative errno on failure.
1871 int drm_mode_getresources(struct drm_device *dev, void *data,
1872 struct drm_file *file_priv)
1874 struct drm_mode_card_res *card_res = data;
1875 struct list_head *lh;
1876 struct drm_framebuffer *fb;
1877 struct drm_connector *connector;
1878 struct drm_crtc *crtc;
1879 struct drm_encoder *encoder;
1881 int connector_count = 0;
1884 int encoder_count = 0;
1886 uint32_t __user *fb_id;
1887 uint32_t __user *crtc_id;
1888 uint32_t __user *connector_id;
1889 uint32_t __user *encoder_id;
1891 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1895 mutex_lock(&file_priv->fbs_lock);
1897 * For the non-control nodes we need to limit the list of resources
1898 * by IDs in the group list for this node
1900 list_for_each(lh, &file_priv->fbs)
1903 /* handle this in 4 parts */
1905 if (card_res->count_fbs >= fb_count) {
1907 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1908 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1909 if (put_user(fb->base.id, fb_id + copied)) {
1910 mutex_unlock(&file_priv->fbs_lock);
1916 card_res->count_fbs = fb_count;
1917 mutex_unlock(&file_priv->fbs_lock);
1919 /* mode_config.mutex protects the connector list against e.g. DP MST
1920 * connector hot-adding. CRTC/Plane lists are invariant. */
1921 mutex_lock(&dev->mode_config.mutex);
1922 drm_for_each_crtc(crtc, dev)
1925 drm_for_each_connector(connector, dev)
1928 drm_for_each_encoder(encoder, dev)
1931 card_res->max_height = dev->mode_config.max_height;
1932 card_res->min_height = dev->mode_config.min_height;
1933 card_res->max_width = dev->mode_config.max_width;
1934 card_res->min_width = dev->mode_config.min_width;
1937 if (card_res->count_crtcs >= crtc_count) {
1939 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1940 drm_for_each_crtc(crtc, dev) {
1941 if (put_user(crtc->base.id, crtc_id + copied)) {
1948 card_res->count_crtcs = crtc_count;
1951 if (card_res->count_encoders >= encoder_count) {
1953 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1954 drm_for_each_encoder(encoder, dev) {
1955 if (put_user(encoder->base.id, encoder_id +
1963 card_res->count_encoders = encoder_count;
1966 if (card_res->count_connectors >= connector_count) {
1968 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1969 drm_for_each_connector(connector, dev) {
1970 if (put_user(connector->base.id,
1971 connector_id + copied)) {
1978 card_res->count_connectors = connector_count;
1981 mutex_unlock(&dev->mode_config.mutex);
1986 * drm_mode_getcrtc - get CRTC configuration
1987 * @dev: drm device for the ioctl
1988 * @data: data pointer for the ioctl
1989 * @file_priv: drm file for the ioctl call
1991 * Construct a CRTC configuration structure to return to the user.
1993 * Called by the user via ioctl.
1996 * Zero on success, negative errno on failure.
1998 int drm_mode_getcrtc(struct drm_device *dev,
1999 void *data, struct drm_file *file_priv)
2001 struct drm_mode_crtc *crtc_resp = data;
2002 struct drm_crtc *crtc;
2004 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2007 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
2011 drm_modeset_lock_crtc(crtc, crtc->primary);
2012 crtc_resp->gamma_size = crtc->gamma_size;
2013 if (crtc->primary->fb)
2014 crtc_resp->fb_id = crtc->primary->fb->base.id;
2016 crtc_resp->fb_id = 0;
2019 crtc_resp->x = crtc->primary->state->src_x >> 16;
2020 crtc_resp->y = crtc->primary->state->src_y >> 16;
2021 if (crtc->state->enable) {
2022 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode);
2023 crtc_resp->mode_valid = 1;
2026 crtc_resp->mode_valid = 0;
2029 crtc_resp->x = crtc->x;
2030 crtc_resp->y = crtc->y;
2031 if (crtc->enabled) {
2032 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode);
2033 crtc_resp->mode_valid = 1;
2036 crtc_resp->mode_valid = 0;
2039 drm_modeset_unlock_crtc(crtc);
2044 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
2045 const struct drm_file *file_priv)
2048 * If user-space hasn't configured the driver to expose the stereo 3D
2049 * modes, don't expose them.
2051 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
2057 static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
2059 /* For atomic drivers only state objects are synchronously updated and
2060 * protected by modeset locks, so check those first. */
2061 if (connector->state)
2062 return connector->state->best_encoder;
2063 return connector->encoder;
2066 /* helper for getconnector and getproperties ioctls */
2067 static int get_properties(struct drm_mode_object *obj, bool atomic,
2068 uint32_t __user *prop_ptr, uint64_t __user *prop_values,
2069 uint32_t *arg_count_props)
2074 props_count = obj->properties->count;
2076 props_count -= obj->properties->atomic_count;
2078 if ((*arg_count_props >= props_count) && props_count) {
2079 for (i = 0, copied = 0; copied < props_count; i++) {
2080 struct drm_property *prop = obj->properties->properties[i];
2083 if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
2086 ret = drm_object_property_get_value(obj, prop, &val);
2090 if (put_user(prop->base.id, prop_ptr + copied))
2093 if (put_user(val, prop_values + copied))
2099 *arg_count_props = props_count;
2105 * drm_mode_getconnector - get connector configuration
2106 * @dev: drm device for the ioctl
2107 * @data: data pointer for the ioctl
2108 * @file_priv: drm file for the ioctl call
2110 * Construct a connector configuration structure to return to the user.
2112 * Called by the user via ioctl.
2115 * Zero on success, negative errno on failure.
2117 int drm_mode_getconnector(struct drm_device *dev, void *data,
2118 struct drm_file *file_priv)
2120 struct drm_mode_get_connector *out_resp = data;
2121 struct drm_connector *connector;
2122 struct drm_encoder *encoder;
2123 struct drm_display_mode *mode;
2125 int encoders_count = 0;
2129 struct drm_mode_modeinfo u_mode;
2130 struct drm_mode_modeinfo __user *mode_ptr;
2131 uint32_t __user *encoder_ptr;
2133 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2136 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
2138 mutex_lock(&dev->mode_config.mutex);
2140 connector = drm_connector_find(dev, out_resp->connector_id);
2146 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
2147 if (connector->encoder_ids[i] != 0)
2150 if (out_resp->count_modes == 0) {
2151 connector->funcs->fill_modes(connector,
2152 dev->mode_config.max_width,
2153 dev->mode_config.max_height);
2156 /* delayed so we get modes regardless of pre-fill_modes state */
2157 list_for_each_entry(mode, &connector->modes, head)
2158 if (drm_mode_expose_to_userspace(mode, file_priv))
2161 out_resp->connector_id = connector->base.id;
2162 out_resp->connector_type = connector->connector_type;
2163 out_resp->connector_type_id = connector->connector_type_id;
2164 out_resp->mm_width = connector->display_info.width_mm;
2165 out_resp->mm_height = connector->display_info.height_mm;
2166 out_resp->subpixel = connector->display_info.subpixel_order;
2167 out_resp->connection = connector->status;
2169 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2170 encoder = drm_connector_get_encoder(connector);
2172 out_resp->encoder_id = encoder->base.id;
2174 out_resp->encoder_id = 0;
2177 * This ioctl is called twice, once to determine how much space is
2178 * needed, and the 2nd time to fill it.
2180 if ((out_resp->count_modes >= mode_count) && mode_count) {
2182 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
2183 list_for_each_entry(mode, &connector->modes, head) {
2184 if (!drm_mode_expose_to_userspace(mode, file_priv))
2187 drm_mode_convert_to_umode(&u_mode, mode);
2188 if (copy_to_user(mode_ptr + copied,
2189 &u_mode, sizeof(u_mode))) {
2196 out_resp->count_modes = mode_count;
2198 ret = get_properties(&connector->base, file_priv->atomic,
2199 (uint32_t __user *)(unsigned long)(out_resp->props_ptr),
2200 (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr),
2201 &out_resp->count_props);
2205 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2207 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
2208 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2209 if (connector->encoder_ids[i] != 0) {
2210 if (put_user(connector->encoder_ids[i],
2211 encoder_ptr + copied)) {
2219 out_resp->count_encoders = encoders_count;
2222 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2225 mutex_unlock(&dev->mode_config.mutex);
2230 static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2232 struct drm_connector *connector;
2233 struct drm_device *dev = encoder->dev;
2234 bool uses_atomic = false;
2236 /* For atomic drivers only state objects are synchronously updated and
2237 * protected by modeset locks, so check those first. */
2238 drm_for_each_connector(connector, dev) {
2239 if (!connector->state)
2244 if (connector->state->best_encoder != encoder)
2247 return connector->state->crtc;
2250 /* Don't return stale data (e.g. pending async disable). */
2254 return encoder->crtc;
2258 * drm_mode_getencoder - get encoder configuration
2259 * @dev: drm device for the ioctl
2260 * @data: data pointer for the ioctl
2261 * @file_priv: drm file for the ioctl call
2263 * Construct a encoder configuration structure to return to the user.
2265 * Called by the user via ioctl.
2268 * Zero on success, negative errno on failure.
2270 int drm_mode_getencoder(struct drm_device *dev, void *data,
2271 struct drm_file *file_priv)
2273 struct drm_mode_get_encoder *enc_resp = data;
2274 struct drm_encoder *encoder;
2275 struct drm_crtc *crtc;
2277 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2280 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
2284 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2285 crtc = drm_encoder_get_crtc(encoder);
2287 enc_resp->crtc_id = crtc->base.id;
2289 enc_resp->crtc_id = 0;
2290 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2292 enc_resp->encoder_type = encoder->encoder_type;
2293 enc_resp->encoder_id = encoder->base.id;
2294 enc_resp->possible_crtcs = encoder->possible_crtcs;
2295 enc_resp->possible_clones = encoder->possible_clones;
2301 * drm_mode_getplane_res - enumerate all plane resources
2304 * @file_priv: DRM file info
2306 * Construct a list of plane ids to return to the user.
2308 * Called by the user via ioctl.
2311 * Zero on success, negative errno on failure.
2313 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2314 struct drm_file *file_priv)
2316 struct drm_mode_get_plane_res *plane_resp = data;
2317 struct drm_mode_config *config;
2318 struct drm_plane *plane;
2319 uint32_t __user *plane_ptr;
2321 unsigned num_planes;
2323 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2326 config = &dev->mode_config;
2328 if (file_priv->universal_planes)
2329 num_planes = config->num_total_plane;
2331 num_planes = config->num_overlay_plane;
2334 * This ioctl is called twice, once to determine how much space is
2335 * needed, and the 2nd time to fill it.
2338 (plane_resp->count_planes >= num_planes)) {
2339 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2341 /* Plane lists are invariant, no locking needed. */
2342 drm_for_each_plane(plane, dev) {
2344 * Unless userspace set the 'universal planes'
2345 * capability bit, only advertise overlays.
2347 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2348 !file_priv->universal_planes)
2351 if (put_user(plane->base.id, plane_ptr + copied))
2356 plane_resp->count_planes = num_planes;
2362 * drm_mode_getplane - get plane configuration
2365 * @file_priv: DRM file info
2367 * Construct a plane configuration structure to return to the user.
2369 * Called by the user via ioctl.
2372 * Zero on success, negative errno on failure.
2374 int drm_mode_getplane(struct drm_device *dev, void *data,
2375 struct drm_file *file_priv)
2377 struct drm_mode_get_plane *plane_resp = data;
2378 struct drm_plane *plane;
2379 uint32_t __user *format_ptr;
2381 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2384 plane = drm_plane_find(dev, plane_resp->plane_id);
2388 drm_modeset_lock(&plane->mutex, NULL);
2390 plane_resp->crtc_id = plane->crtc->base.id;
2392 plane_resp->crtc_id = 0;
2395 plane_resp->fb_id = plane->fb->base.id;
2397 plane_resp->fb_id = 0;
2398 drm_modeset_unlock(&plane->mutex);
2400 plane_resp->plane_id = plane->base.id;
2401 plane_resp->possible_crtcs = plane->possible_crtcs;
2402 plane_resp->gamma_size = 0;
2405 * This ioctl is called twice, once to determine how much space is
2406 * needed, and the 2nd time to fill it.
2408 if (plane->format_count &&
2409 (plane_resp->count_format_types >= plane->format_count)) {
2410 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2411 if (copy_to_user(format_ptr,
2412 plane->format_types,
2413 sizeof(uint32_t) * plane->format_count)) {
2417 plane_resp->count_format_types = plane->format_count;
2423 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2424 * @plane: plane to check for format support
2425 * @format: the pixel format
2428 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2431 int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format)
2435 for (i = 0; i < plane->format_count; i++) {
2436 if (format == plane->format_types[i])
2443 static int check_src_coords(uint32_t src_x, uint32_t src_y,
2444 uint32_t src_w, uint32_t src_h,
2445 const struct drm_framebuffer *fb)
2447 unsigned int fb_width, fb_height;
2449 fb_width = fb->width << 16;
2450 fb_height = fb->height << 16;
2452 /* Make sure source coordinates are inside the fb. */
2453 if (src_w > fb_width ||
2454 src_x > fb_width - src_w ||
2455 src_h > fb_height ||
2456 src_y > fb_height - src_h) {
2457 DRM_DEBUG_KMS("Invalid source coordinates "
2458 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2459 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2460 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2461 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2462 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2470 * setplane_internal - setplane handler for internal callers
2472 * Note that we assume an extra reference has already been taken on fb. If the
2473 * update fails, this reference will be dropped before return; if it succeeds,
2474 * the previous framebuffer (if any) will be unreferenced instead.
2476 * src_{x,y,w,h} are provided in 16.16 fixed point format
2478 static int __setplane_internal(struct drm_plane *plane,
2479 struct drm_crtc *crtc,
2480 struct drm_framebuffer *fb,
2481 int32_t crtc_x, int32_t crtc_y,
2482 uint32_t crtc_w, uint32_t crtc_h,
2483 /* src_{x,y,w,h} values are 16.16 fixed point */
2484 uint32_t src_x, uint32_t src_y,
2485 uint32_t src_w, uint32_t src_h)
2489 /* No fb means shut it down */
2491 plane->old_fb = plane->fb;
2492 ret = plane->funcs->disable_plane(plane);
2497 plane->old_fb = NULL;
2502 /* Check whether this plane is usable on this CRTC */
2503 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2504 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2509 /* Check whether this plane supports the fb pixel format. */
2510 ret = drm_plane_check_pixel_format(plane, fb->pixel_format);
2512 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2513 drm_get_format_name(fb->pixel_format));
2517 /* Give drivers some help against integer overflows */
2518 if (crtc_w > INT_MAX ||
2519 crtc_x > INT_MAX - (int32_t) crtc_w ||
2521 crtc_y > INT_MAX - (int32_t) crtc_h) {
2522 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2523 crtc_w, crtc_h, crtc_x, crtc_y);
2528 ret = check_src_coords(src_x, src_y, src_w, src_h, fb);
2532 plane->old_fb = plane->fb;
2533 ret = plane->funcs->update_plane(plane, crtc, fb,
2534 crtc_x, crtc_y, crtc_w, crtc_h,
2535 src_x, src_y, src_w, src_h);
2541 plane->old_fb = NULL;
2546 drm_framebuffer_unreference(fb);
2548 drm_framebuffer_unreference(plane->old_fb);
2549 plane->old_fb = NULL;
2554 static int setplane_internal(struct drm_plane *plane,
2555 struct drm_crtc *crtc,
2556 struct drm_framebuffer *fb,
2557 int32_t crtc_x, int32_t crtc_y,
2558 uint32_t crtc_w, uint32_t crtc_h,
2559 /* src_{x,y,w,h} values are 16.16 fixed point */
2560 uint32_t src_x, uint32_t src_y,
2561 uint32_t src_w, uint32_t src_h)
2565 drm_modeset_lock_all(plane->dev);
2566 ret = __setplane_internal(plane, crtc, fb,
2567 crtc_x, crtc_y, crtc_w, crtc_h,
2568 src_x, src_y, src_w, src_h);
2569 drm_modeset_unlock_all(plane->dev);
2575 * drm_mode_setplane - configure a plane's configuration
2577 * @data: ioctl data*
2578 * @file_priv: DRM file info
2580 * Set plane configuration, including placement, fb, scaling, and other factors.
2581 * Or pass a NULL fb to disable (planes may be disabled without providing a
2585 * Zero on success, negative errno on failure.
2587 int drm_mode_setplane(struct drm_device *dev, void *data,
2588 struct drm_file *file_priv)
2590 struct drm_mode_set_plane *plane_req = data;
2591 struct drm_plane *plane;
2592 struct drm_crtc *crtc = NULL;
2593 struct drm_framebuffer *fb = NULL;
2595 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2599 * First, find the plane, crtc, and fb objects. If not available,
2600 * we don't bother to call the driver.
2602 plane = drm_plane_find(dev, plane_req->plane_id);
2604 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2605 plane_req->plane_id);
2609 if (plane_req->fb_id) {
2610 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2612 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2617 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2619 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2620 plane_req->crtc_id);
2626 * setplane_internal will take care of deref'ing either the old or new
2627 * framebuffer depending on success.
2629 return setplane_internal(plane, crtc, fb,
2630 plane_req->crtc_x, plane_req->crtc_y,
2631 plane_req->crtc_w, plane_req->crtc_h,
2632 plane_req->src_x, plane_req->src_y,
2633 plane_req->src_w, plane_req->src_h);
2637 * drm_mode_set_config_internal - helper to call ->set_config
2638 * @set: modeset config to set
2640 * This is a little helper to wrap internal calls to the ->set_config driver
2641 * interface. The only thing it adds is correct refcounting dance.
2644 * Zero on success, negative errno on failure.
2646 int drm_mode_set_config_internal(struct drm_mode_set *set)
2648 struct drm_crtc *crtc = set->crtc;
2649 struct drm_framebuffer *fb;
2650 struct drm_crtc *tmp;
2654 * NOTE: ->set_config can also disable other crtcs (if we steal all
2655 * connectors from it), hence we need to refcount the fbs across all
2656 * crtcs. Atomic modeset will have saner semantics ...
2658 drm_for_each_crtc(tmp, crtc->dev)
2659 tmp->primary->old_fb = tmp->primary->fb;
2663 ret = crtc->funcs->set_config(set);
2665 crtc->primary->crtc = crtc;
2666 crtc->primary->fb = fb;
2669 drm_for_each_crtc(tmp, crtc->dev) {
2670 if (tmp->primary->fb)
2671 drm_framebuffer_reference(tmp->primary->fb);
2672 if (tmp->primary->old_fb)
2673 drm_framebuffer_unreference(tmp->primary->old_fb);
2674 tmp->primary->old_fb = NULL;
2679 EXPORT_SYMBOL(drm_mode_set_config_internal);
2682 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2683 * @mode: mode to query
2684 * @hdisplay: hdisplay value to fill in
2685 * @vdisplay: vdisplay value to fill in
2687 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2688 * the appropriate layout.
2690 void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
2691 int *hdisplay, int *vdisplay)
2693 struct drm_display_mode adjusted;
2695 drm_mode_copy(&adjusted, mode);
2696 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
2697 *hdisplay = adjusted.crtc_hdisplay;
2698 *vdisplay = adjusted.crtc_vdisplay;
2700 EXPORT_SYMBOL(drm_crtc_get_hv_timing);
2703 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2705 * @crtc: CRTC that framebuffer will be displayed on
2708 * @mode: mode that framebuffer will be displayed under
2709 * @fb: framebuffer to check size of
2711 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2713 const struct drm_display_mode *mode,
2714 const struct drm_framebuffer *fb)
2717 int hdisplay, vdisplay;
2719 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
2722 crtc->primary->state->rotation & (BIT(DRM_ROTATE_90) |
2723 BIT(DRM_ROTATE_270)))
2724 swap(hdisplay, vdisplay);
2726 return check_src_coords(x << 16, y << 16,
2727 hdisplay << 16, vdisplay << 16, fb);
2729 EXPORT_SYMBOL(drm_crtc_check_viewport);
2732 * drm_mode_setcrtc - set CRTC configuration
2733 * @dev: drm device for the ioctl
2734 * @data: data pointer for the ioctl
2735 * @file_priv: drm file for the ioctl call
2737 * Build a new CRTC configuration based on user request.
2739 * Called by the user via ioctl.
2742 * Zero on success, negative errno on failure.
2744 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2745 struct drm_file *file_priv)
2747 struct drm_mode_config *config = &dev->mode_config;
2748 struct drm_mode_crtc *crtc_req = data;
2749 struct drm_crtc *crtc;
2750 struct drm_connector **connector_set = NULL, *connector;
2751 struct drm_framebuffer *fb = NULL;
2752 struct drm_display_mode *mode = NULL;
2753 struct drm_mode_set set;
2754 uint32_t __user *set_connectors_ptr;
2758 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2762 * Universal plane src offsets are only 16.16, prevent havoc for
2763 * drivers using universal plane code internally.
2765 if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000)
2768 drm_modeset_lock_all(dev);
2769 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2771 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2775 DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name);
2777 if (crtc_req->mode_valid) {
2778 /* If we have a mode we need a framebuffer. */
2779 /* If we pass -1, set the mode with the currently bound fb */
2780 if (crtc_req->fb_id == -1) {
2781 if (!crtc->primary->fb) {
2782 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2786 fb = crtc->primary->fb;
2787 /* Make refcounting symmetric with the lookup path. */
2788 drm_framebuffer_reference(fb);
2790 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2792 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2799 mode = drm_mode_create(dev);
2805 ret = drm_mode_convert_umode(mode, &crtc_req->mode);
2807 DRM_DEBUG_KMS("Invalid mode\n");
2811 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2814 * Check whether the primary plane supports the fb pixel format.
2815 * Drivers not implementing the universal planes API use a
2816 * default formats list provided by the DRM core which doesn't
2817 * match real hardware capabilities. Skip the check in that
2820 if (!crtc->primary->format_default) {
2821 ret = drm_plane_check_pixel_format(crtc->primary,
2824 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2825 drm_get_format_name(fb->pixel_format));
2830 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2837 if (crtc_req->count_connectors == 0 && mode) {
2838 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2843 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2844 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2845 crtc_req->count_connectors);
2850 if (crtc_req->count_connectors > 0) {
2853 /* Avoid unbounded kernel memory allocation */
2854 if (crtc_req->count_connectors > config->num_connector) {
2859 connector_set = kmalloc_array(crtc_req->count_connectors,
2860 sizeof(struct drm_connector *),
2862 if (!connector_set) {
2867 for (i = 0; i < crtc_req->count_connectors; i++) {
2868 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2869 if (get_user(out_id, &set_connectors_ptr[i])) {
2874 connector = drm_connector_find(dev, out_id);
2876 DRM_DEBUG_KMS("Connector id %d unknown\n",
2881 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2885 connector_set[i] = connector;
2890 set.x = crtc_req->x;
2891 set.y = crtc_req->y;
2893 set.connectors = connector_set;
2894 set.num_connectors = crtc_req->count_connectors;
2896 ret = drm_mode_set_config_internal(&set);
2900 drm_framebuffer_unreference(fb);
2902 kfree(connector_set);
2903 drm_mode_destroy(dev, mode);
2904 drm_modeset_unlock_all(dev);
2909 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2910 * universal plane handler call
2911 * @crtc: crtc to update cursor for
2912 * @req: data pointer for the ioctl
2913 * @file_priv: drm file for the ioctl call
2915 * Legacy cursor ioctl's work directly with driver buffer handles. To
2916 * translate legacy ioctl calls into universal plane handler calls, we need to
2917 * wrap the native buffer handle in a drm_framebuffer.
2919 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2920 * buffer with a pitch of 4*width; the universal plane interface should be used
2921 * directly in cases where the hardware can support other buffer settings and
2922 * userspace wants to make use of these capabilities.
2925 * Zero on success, negative errno on failure.
2927 static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2928 struct drm_mode_cursor2 *req,
2929 struct drm_file *file_priv)
2931 struct drm_device *dev = crtc->dev;
2932 struct drm_framebuffer *fb = NULL;
2933 struct drm_mode_fb_cmd2 fbreq = {
2934 .width = req->width,
2935 .height = req->height,
2936 .pixel_format = DRM_FORMAT_ARGB8888,
2937 .pitches = { req->width * 4 },
2938 .handles = { req->handle },
2940 int32_t crtc_x, crtc_y;
2941 uint32_t crtc_w = 0, crtc_h = 0;
2942 uint32_t src_w = 0, src_h = 0;
2945 BUG_ON(!crtc->cursor);
2946 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
2949 * Obtain fb we'll be using (either new or existing) and take an extra
2950 * reference to it if fb != null. setplane will take care of dropping
2951 * the reference if the plane update fails.
2953 if (req->flags & DRM_MODE_CURSOR_BO) {
2955 fb = internal_framebuffer_create(dev, &fbreq, file_priv);
2957 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2964 fb = crtc->cursor->fb;
2966 drm_framebuffer_reference(fb);
2969 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2973 crtc_x = crtc->cursor_x;
2974 crtc_y = crtc->cursor_y;
2979 crtc_h = fb->height;
2980 src_w = fb->width << 16;
2981 src_h = fb->height << 16;
2985 * setplane_internal will take care of deref'ing either the old or new
2986 * framebuffer depending on success.
2988 ret = __setplane_internal(crtc->cursor, crtc, fb,
2989 crtc_x, crtc_y, crtc_w, crtc_h,
2990 0, 0, src_w, src_h);
2992 /* Update successful; save new cursor position, if necessary */
2993 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2994 crtc->cursor_x = req->x;
2995 crtc->cursor_y = req->y;
3001 static int drm_mode_cursor_common(struct drm_device *dev,
3002 struct drm_mode_cursor2 *req,
3003 struct drm_file *file_priv)
3005 struct drm_crtc *crtc;
3008 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3011 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
3014 crtc = drm_crtc_find(dev, req->crtc_id);
3016 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
3021 * If this crtc has a universal cursor plane, call that plane's update
3022 * handler rather than using legacy cursor handlers.
3024 drm_modeset_lock_crtc(crtc, crtc->cursor);
3026 ret = drm_mode_cursor_universal(crtc, req, file_priv);
3030 if (req->flags & DRM_MODE_CURSOR_BO) {
3031 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
3035 /* Turns off the cursor if handle is 0 */
3036 if (crtc->funcs->cursor_set2)
3037 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
3038 req->width, req->height, req->hot_x, req->hot_y);
3040 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
3041 req->width, req->height);
3044 if (req->flags & DRM_MODE_CURSOR_MOVE) {
3045 if (crtc->funcs->cursor_move) {
3046 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
3053 drm_modeset_unlock_crtc(crtc);
3061 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
3062 * @dev: drm device for the ioctl
3063 * @data: data pointer for the ioctl
3064 * @file_priv: drm file for the ioctl call
3066 * Set the cursor configuration based on user request.
3068 * Called by the user via ioctl.
3071 * Zero on success, negative errno on failure.
3073 int drm_mode_cursor_ioctl(struct drm_device *dev,
3074 void *data, struct drm_file *file_priv)
3076 struct drm_mode_cursor *req = data;
3077 struct drm_mode_cursor2 new_req;
3079 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
3080 new_req.hot_x = new_req.hot_y = 0;
3082 return drm_mode_cursor_common(dev, &new_req, file_priv);
3086 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3087 * @dev: drm device for the ioctl
3088 * @data: data pointer for the ioctl
3089 * @file_priv: drm file for the ioctl call
3091 * Set the cursor configuration based on user request. This implements the 2nd
3092 * version of the cursor ioctl, which allows userspace to additionally specify
3093 * the hotspot of the pointer.
3095 * Called by the user via ioctl.
3098 * Zero on success, negative errno on failure.
3100 int drm_mode_cursor2_ioctl(struct drm_device *dev,
3101 void *data, struct drm_file *file_priv)
3103 struct drm_mode_cursor2 *req = data;
3105 return drm_mode_cursor_common(dev, req, file_priv);
3109 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3110 * @bpp: bits per pixels
3111 * @depth: bit depth per pixel
3113 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3114 * Useful in fbdev emulation code, since that deals in those values.
3116 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
3122 fmt = DRM_FORMAT_C8;
3126 fmt = DRM_FORMAT_XRGB1555;
3128 fmt = DRM_FORMAT_RGB565;
3131 fmt = DRM_FORMAT_RGB888;
3135 fmt = DRM_FORMAT_XRGB8888;
3136 else if (depth == 30)
3137 fmt = DRM_FORMAT_XRGB2101010;
3139 fmt = DRM_FORMAT_ARGB8888;
3142 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3143 fmt = DRM_FORMAT_XRGB8888;
3149 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3152 * drm_mode_addfb - add an FB to the graphics configuration
3153 * @dev: drm device for the ioctl
3154 * @data: data pointer for the ioctl
3155 * @file_priv: drm file for the ioctl call
3157 * Add a new FB to the specified CRTC, given a user request. This is the
3158 * original addfb ioctl which only supported RGB formats.
3160 * Called by the user via ioctl.
3163 * Zero on success, negative errno on failure.
3165 int drm_mode_addfb(struct drm_device *dev,
3166 void *data, struct drm_file *file_priv)
3168 struct drm_mode_fb_cmd *or = data;
3169 struct drm_mode_fb_cmd2 r = {};
3172 /* convert to new format and call new ioctl */
3173 r.fb_id = or->fb_id;
3174 r.width = or->width;
3175 r.height = or->height;
3176 r.pitches[0] = or->pitch;
3177 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3178 r.handles[0] = or->handle;
3180 ret = drm_mode_addfb2(dev, &r, file_priv);
3184 or->fb_id = r.fb_id;
3189 static int format_check(const struct drm_mode_fb_cmd2 *r)
3191 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3195 case DRM_FORMAT_RGB332:
3196 case DRM_FORMAT_BGR233:
3197 case DRM_FORMAT_XRGB4444:
3198 case DRM_FORMAT_XBGR4444:
3199 case DRM_FORMAT_RGBX4444:
3200 case DRM_FORMAT_BGRX4444:
3201 case DRM_FORMAT_ARGB4444:
3202 case DRM_FORMAT_ABGR4444:
3203 case DRM_FORMAT_RGBA4444:
3204 case DRM_FORMAT_BGRA4444:
3205 case DRM_FORMAT_XRGB1555:
3206 case DRM_FORMAT_XBGR1555:
3207 case DRM_FORMAT_RGBX5551:
3208 case DRM_FORMAT_BGRX5551:
3209 case DRM_FORMAT_ARGB1555:
3210 case DRM_FORMAT_ABGR1555:
3211 case DRM_FORMAT_RGBA5551:
3212 case DRM_FORMAT_BGRA5551:
3213 case DRM_FORMAT_RGB565:
3214 case DRM_FORMAT_BGR565:
3215 case DRM_FORMAT_RGB888:
3216 case DRM_FORMAT_BGR888:
3217 case DRM_FORMAT_XRGB8888:
3218 case DRM_FORMAT_XBGR8888:
3219 case DRM_FORMAT_RGBX8888:
3220 case DRM_FORMAT_BGRX8888:
3221 case DRM_FORMAT_ARGB8888:
3222 case DRM_FORMAT_ABGR8888:
3223 case DRM_FORMAT_RGBA8888:
3224 case DRM_FORMAT_BGRA8888:
3225 case DRM_FORMAT_XRGB2101010:
3226 case DRM_FORMAT_XBGR2101010:
3227 case DRM_FORMAT_RGBX1010102:
3228 case DRM_FORMAT_BGRX1010102:
3229 case DRM_FORMAT_ARGB2101010:
3230 case DRM_FORMAT_ABGR2101010:
3231 case DRM_FORMAT_RGBA1010102:
3232 case DRM_FORMAT_BGRA1010102:
3233 case DRM_FORMAT_YUYV:
3234 case DRM_FORMAT_YVYU:
3235 case DRM_FORMAT_UYVY:
3236 case DRM_FORMAT_VYUY:
3237 case DRM_FORMAT_AYUV:
3238 case DRM_FORMAT_NV12:
3239 case DRM_FORMAT_NV21:
3240 case DRM_FORMAT_NV16:
3241 case DRM_FORMAT_NV61:
3242 case DRM_FORMAT_NV24:
3243 case DRM_FORMAT_NV42:
3244 case DRM_FORMAT_YUV410:
3245 case DRM_FORMAT_YVU410:
3246 case DRM_FORMAT_YUV411:
3247 case DRM_FORMAT_YVU411:
3248 case DRM_FORMAT_YUV420:
3249 case DRM_FORMAT_YVU420:
3250 case DRM_FORMAT_YUV422:
3251 case DRM_FORMAT_YVU422:
3252 case DRM_FORMAT_YUV444:
3253 case DRM_FORMAT_YVU444:
3256 DRM_DEBUG_KMS("invalid pixel format %s\n",
3257 drm_get_format_name(r->pixel_format));
3262 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
3264 int ret, hsub, vsub, num_planes, i;
3266 ret = format_check(r);
3268 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3269 drm_get_format_name(r->pixel_format));
3273 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3274 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3275 num_planes = drm_format_num_planes(r->pixel_format);
3277 if (r->width == 0 || r->width % hsub) {
3278 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
3282 if (r->height == 0 || r->height % vsub) {
3283 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
3287 for (i = 0; i < num_planes; i++) {
3288 unsigned int width = r->width / (i != 0 ? hsub : 1);
3289 unsigned int height = r->height / (i != 0 ? vsub : 1);
3290 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
3292 if (!r->handles[i]) {
3293 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
3297 if ((uint64_t) width * cpp > UINT_MAX)
3300 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3303 if (r->pitches[i] < width * cpp) {
3304 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
3308 if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
3309 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3314 /* modifier specific checks: */
3315 switch (r->modifier[i]) {
3316 case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE:
3317 /* NOTE: the pitch restriction may be lifted later if it turns
3318 * out that no hw has this restriction:
3320 if (r->pixel_format != DRM_FORMAT_NV12 ||
3321 width % 128 || height % 32 ||
3322 r->pitches[i] % 128) {
3323 DRM_DEBUG_KMS("bad modifier data for plane %d\n", i);
3333 for (i = num_planes; i < 4; i++) {
3334 if (r->modifier[i]) {
3335 DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i);
3339 /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
3340 if (!(r->flags & DRM_MODE_FB_MODIFIERS))
3343 if (r->handles[i]) {
3344 DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i);
3348 if (r->pitches[i]) {
3349 DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i);
3353 if (r->offsets[i]) {
3354 DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i);
3362 static struct drm_framebuffer *
3363 internal_framebuffer_create(struct drm_device *dev,
3364 const struct drm_mode_fb_cmd2 *r,
3365 struct drm_file *file_priv)
3367 struct drm_mode_config *config = &dev->mode_config;
3368 struct drm_framebuffer *fb;
3371 if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
3372 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
3373 return ERR_PTR(-EINVAL);
3376 if ((config->min_width > r->width) || (r->width > config->max_width)) {
3377 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3378 r->width, config->min_width, config->max_width);
3379 return ERR_PTR(-EINVAL);
3381 if ((config->min_height > r->height) || (r->height > config->max_height)) {
3382 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3383 r->height, config->min_height, config->max_height);
3384 return ERR_PTR(-EINVAL);
3387 if (r->flags & DRM_MODE_FB_MODIFIERS &&
3388 !dev->mode_config.allow_fb_modifiers) {
3389 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3390 return ERR_PTR(-EINVAL);
3393 ret = framebuffer_check(r);
3395 return ERR_PTR(ret);
3397 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
3399 DRM_DEBUG_KMS("could not create framebuffer\n");
3407 * drm_mode_addfb2 - add an FB to the graphics configuration
3408 * @dev: drm device for the ioctl
3409 * @data: data pointer for the ioctl
3410 * @file_priv: drm file for the ioctl call
3412 * Add a new FB to the specified CRTC, given a user request with format. This is
3413 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3414 * and uses fourcc codes as pixel format specifiers.
3416 * Called by the user via ioctl.
3419 * Zero on success, negative errno on failure.
3421 int drm_mode_addfb2(struct drm_device *dev,
3422 void *data, struct drm_file *file_priv)
3424 struct drm_mode_fb_cmd2 *r = data;
3425 struct drm_framebuffer *fb;
3427 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3430 fb = internal_framebuffer_create(dev, r, file_priv);
3434 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3435 r->fb_id = fb->base.id;
3437 /* Transfer ownership to the filp for reaping on close */
3438 mutex_lock(&file_priv->fbs_lock);
3439 list_add(&fb->filp_head, &file_priv->fbs);
3440 mutex_unlock(&file_priv->fbs_lock);
3446 * drm_mode_rmfb - remove an FB from the configuration
3447 * @dev: drm device for the ioctl
3448 * @data: data pointer for the ioctl
3449 * @file_priv: drm file for the ioctl call
3451 * Remove the FB specified by the user.
3453 * Called by the user via ioctl.
3456 * Zero on success, negative errno on failure.
3458 int drm_mode_rmfb(struct drm_device *dev,
3459 void *data, struct drm_file *file_priv)
3461 struct drm_framebuffer *fb = NULL;
3462 struct drm_framebuffer *fbl = NULL;
3463 uint32_t *id = data;
3466 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3469 fb = drm_framebuffer_lookup(dev, *id);
3473 mutex_lock(&file_priv->fbs_lock);
3474 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3478 mutex_unlock(&file_priv->fbs_lock);
3482 list_del_init(&fb->filp_head);
3483 mutex_unlock(&file_priv->fbs_lock);
3485 /* we now own the reference that was stored in the fbs list */
3486 drm_framebuffer_unreference(fb);
3488 /* drop the reference we picked up in framebuffer lookup */
3489 drm_framebuffer_unreference(fb);
3494 drm_framebuffer_unreference(fb);
3499 * drm_mode_getfb - get FB info
3500 * @dev: drm device for the ioctl
3501 * @data: data pointer for the ioctl
3502 * @file_priv: drm file for the ioctl call
3504 * Lookup the FB given its ID and return info about it.
3506 * Called by the user via ioctl.
3509 * Zero on success, negative errno on failure.
3511 int drm_mode_getfb(struct drm_device *dev,
3512 void *data, struct drm_file *file_priv)
3514 struct drm_mode_fb_cmd *r = data;
3515 struct drm_framebuffer *fb;
3518 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3521 fb = drm_framebuffer_lookup(dev, r->fb_id);
3525 r->height = fb->height;
3526 r->width = fb->width;
3527 r->depth = fb->depth;
3528 r->bpp = fb->bits_per_pixel;
3529 r->pitch = fb->pitches[0];
3530 if (fb->funcs->create_handle) {
3531 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
3532 drm_is_control_client(file_priv)) {
3533 ret = fb->funcs->create_handle(fb, file_priv,
3536 /* GET_FB() is an unprivileged ioctl so we must not
3537 * return a buffer-handle to non-master processes! For
3538 * backwards-compatibility reasons, we cannot make
3539 * GET_FB() privileged, so just return an invalid handle
3540 * for non-masters. */
3548 drm_framebuffer_unreference(fb);
3554 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3555 * @dev: drm device for the ioctl
3556 * @data: data pointer for the ioctl
3557 * @file_priv: drm file for the ioctl call
3559 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3560 * rectangle list. Generic userspace which does frontbuffer rendering must call
3561 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3562 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3564 * Modesetting drivers which always update the frontbuffer do not need to
3565 * implement the corresponding ->dirty framebuffer callback.
3567 * Called by the user via ioctl.
3570 * Zero on success, negative errno on failure.
3572 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3573 void *data, struct drm_file *file_priv)
3575 struct drm_clip_rect __user *clips_ptr;
3576 struct drm_clip_rect *clips = NULL;
3577 struct drm_mode_fb_dirty_cmd *r = data;
3578 struct drm_framebuffer *fb;
3583 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3586 fb = drm_framebuffer_lookup(dev, r->fb_id);
3590 num_clips = r->num_clips;
3591 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3593 if (!num_clips != !clips_ptr) {
3598 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3600 /* If userspace annotates copy, clips must come in pairs */
3601 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3606 if (num_clips && clips_ptr) {
3607 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3611 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
3617 ret = copy_from_user(clips, clips_ptr,
3618 num_clips * sizeof(*clips));
3625 if (fb->funcs->dirty) {
3626 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3635 drm_framebuffer_unreference(fb);
3642 * drm_fb_release - remove and free the FBs on this file
3643 * @priv: drm file for the ioctl
3645 * Destroy all the FBs associated with @filp.
3647 * Called by the user via ioctl.
3650 * Zero on success, negative errno on failure.
3652 void drm_fb_release(struct drm_file *priv)
3654 struct drm_framebuffer *fb, *tfb;
3657 * When the file gets released that means no one else can access the fb
3658 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3659 * avoid upsetting lockdep since the universal cursor code adds a
3660 * framebuffer while holding mutex locks.
3662 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3663 * locks is impossible here since no one else but this function can get
3666 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3667 list_del_init(&fb->filp_head);
3669 /* This drops the fpriv->fbs reference. */
3670 drm_framebuffer_unreference(fb);
3675 * drm_property_create - create a new property type
3677 * @flags: flags specifying the property type
3678 * @name: name of the property
3679 * @num_values: number of pre-defined values
3681 * This creates a new generic drm property which can then be attached to a drm
3682 * object with drm_object_attach_property. The returned property object must be
3683 * freed with drm_property_destroy.
3685 * Note that the DRM core keeps a per-device list of properties and that, if
3686 * drm_mode_config_cleanup() is called, it will destroy all properties created
3690 * A pointer to the newly created property on success, NULL on failure.
3692 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3693 const char *name, int num_values)
3695 struct drm_property *property = NULL;
3698 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3702 property->dev = dev;
3705 property->values = kcalloc(num_values, sizeof(uint64_t),
3707 if (!property->values)
3711 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3715 property->flags = flags;
3716 property->num_values = num_values;
3717 INIT_LIST_HEAD(&property->enum_list);
3720 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3721 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3724 list_add_tail(&property->head, &dev->mode_config.property_list);
3726 WARN_ON(!drm_property_type_valid(property));
3730 kfree(property->values);
3734 EXPORT_SYMBOL(drm_property_create);
3737 * drm_property_create_enum - create a new enumeration property type
3739 * @flags: flags specifying the property type
3740 * @name: name of the property
3741 * @props: enumeration lists with property values
3742 * @num_values: number of pre-defined values
3744 * This creates a new generic drm property which can then be attached to a drm
3745 * object with drm_object_attach_property. The returned property object must be
3746 * freed with drm_property_destroy.
3748 * Userspace is only allowed to set one of the predefined values for enumeration
3752 * A pointer to the newly created property on success, NULL on failure.
3754 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3756 const struct drm_prop_enum_list *props,
3759 struct drm_property *property;
3762 flags |= DRM_MODE_PROP_ENUM;
3764 property = drm_property_create(dev, flags, name, num_values);
3768 for (i = 0; i < num_values; i++) {
3769 ret = drm_property_add_enum(property, i,
3773 drm_property_destroy(dev, property);
3780 EXPORT_SYMBOL(drm_property_create_enum);
3783 * drm_property_create_bitmask - create a new bitmask property type
3785 * @flags: flags specifying the property type
3786 * @name: name of the property
3787 * @props: enumeration lists with property bitflags
3788 * @num_props: size of the @props array
3789 * @supported_bits: bitmask of all supported enumeration values
3791 * This creates a new bitmask drm property which can then be attached to a drm
3792 * object with drm_object_attach_property. The returned property object must be
3793 * freed with drm_property_destroy.
3795 * Compared to plain enumeration properties userspace is allowed to set any
3796 * or'ed together combination of the predefined property bitflag values
3799 * A pointer to the newly created property on success, NULL on failure.
3801 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3802 int flags, const char *name,
3803 const struct drm_prop_enum_list *props,
3805 uint64_t supported_bits)
3807 struct drm_property *property;
3808 int i, ret, index = 0;
3809 int num_values = hweight64(supported_bits);
3811 flags |= DRM_MODE_PROP_BITMASK;
3813 property = drm_property_create(dev, flags, name, num_values);
3816 for (i = 0; i < num_props; i++) {
3817 if (!(supported_bits & (1ULL << props[i].type)))
3820 if (WARN_ON(index >= num_values)) {
3821 drm_property_destroy(dev, property);
3825 ret = drm_property_add_enum(property, index++,
3829 drm_property_destroy(dev, property);
3836 EXPORT_SYMBOL(drm_property_create_bitmask);
3838 static struct drm_property *property_create_range(struct drm_device *dev,
3839 int flags, const char *name,
3840 uint64_t min, uint64_t max)
3842 struct drm_property *property;
3844 property = drm_property_create(dev, flags, name, 2);
3848 property->values[0] = min;
3849 property->values[1] = max;
3855 * drm_property_create_range - create a new unsigned ranged property type
3857 * @flags: flags specifying the property type
3858 * @name: name of the property
3859 * @min: minimum value of the property
3860 * @max: maximum value of the property
3862 * This creates a new generic drm property which can then be attached to a drm
3863 * object with drm_object_attach_property. The returned property object must be
3864 * freed with drm_property_destroy.
3866 * Userspace is allowed to set any unsigned integer value in the (min, max)
3870 * A pointer to the newly created property on success, NULL on failure.
3872 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3874 uint64_t min, uint64_t max)
3876 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3879 EXPORT_SYMBOL(drm_property_create_range);
3882 * drm_property_create_signed_range - create a new signed ranged property type
3884 * @flags: flags specifying the property type
3885 * @name: name of the property
3886 * @min: minimum value of the property
3887 * @max: maximum value of the property
3889 * This creates a new generic drm property which can then be attached to a drm
3890 * object with drm_object_attach_property. The returned property object must be
3891 * freed with drm_property_destroy.
3893 * Userspace is allowed to set any signed integer value in the (min, max)
3897 * A pointer to the newly created property on success, NULL on failure.
3899 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3900 int flags, const char *name,
3901 int64_t min, int64_t max)
3903 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3904 name, I642U64(min), I642U64(max));
3906 EXPORT_SYMBOL(drm_property_create_signed_range);
3909 * drm_property_create_object - create a new object property type
3911 * @flags: flags specifying the property type
3912 * @name: name of the property
3913 * @type: object type from DRM_MODE_OBJECT_* defines
3915 * This creates a new generic drm property which can then be attached to a drm
3916 * object with drm_object_attach_property. The returned property object must be
3917 * freed with drm_property_destroy.
3919 * Userspace is only allowed to set this to any property value of the given
3920 * @type. Only useful for atomic properties, which is enforced.
3923 * A pointer to the newly created property on success, NULL on failure.
3925 struct drm_property *drm_property_create_object(struct drm_device *dev,
3926 int flags, const char *name, uint32_t type)
3928 struct drm_property *property;
3930 flags |= DRM_MODE_PROP_OBJECT;
3932 if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
3935 property = drm_property_create(dev, flags, name, 1);
3939 property->values[0] = type;
3943 EXPORT_SYMBOL(drm_property_create_object);
3946 * drm_property_create_bool - create a new boolean property type
3948 * @flags: flags specifying the property type
3949 * @name: name of the property
3951 * This creates a new generic drm property which can then be attached to a drm
3952 * object with drm_object_attach_property. The returned property object must be
3953 * freed with drm_property_destroy.
3955 * This is implemented as a ranged property with only {0, 1} as valid values.
3958 * A pointer to the newly created property on success, NULL on failure.
3960 struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
3963 return drm_property_create_range(dev, flags, name, 0, 1);
3965 EXPORT_SYMBOL(drm_property_create_bool);
3968 * drm_property_add_enum - add a possible value to an enumeration property
3969 * @property: enumeration property to change
3970 * @index: index of the new enumeration
3971 * @value: value of the new enumeration
3972 * @name: symbolic name of the new enumeration
3974 * This functions adds enumerations to a property.
3976 * It's use is deprecated, drivers should use one of the more specific helpers
3977 * to directly create the property with all enumerations already attached.
3980 * Zero on success, error code on failure.
3982 int drm_property_add_enum(struct drm_property *property, int index,
3983 uint64_t value, const char *name)
3985 struct drm_property_enum *prop_enum;
3987 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3988 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
3992 * Bitmask enum properties have the additional constraint of values
3995 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3999 if (!list_empty(&property->enum_list)) {
4000 list_for_each_entry(prop_enum, &property->enum_list, head) {
4001 if (prop_enum->value == value) {
4002 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
4003 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
4009 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
4013 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
4014 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
4015 prop_enum->value = value;
4017 property->values[index] = value;
4018 list_add_tail(&prop_enum->head, &property->enum_list);
4021 EXPORT_SYMBOL(drm_property_add_enum);
4024 * drm_property_destroy - destroy a drm property
4026 * @property: property to destry
4028 * This function frees a property including any attached resources like
4029 * enumeration values.
4031 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
4033 struct drm_property_enum *prop_enum, *pt;
4035 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
4036 list_del(&prop_enum->head);
4040 if (property->num_values)
4041 kfree(property->values);
4042 drm_mode_object_unregister(dev, &property->base);
4043 list_del(&property->head);
4046 EXPORT_SYMBOL(drm_property_destroy);
4049 * drm_object_attach_property - attach a property to a modeset object
4050 * @obj: drm modeset object
4051 * @property: property to attach
4052 * @init_val: initial value of the property
4054 * This attaches the given property to the modeset object with the given initial
4055 * value. Currently this function cannot fail since the properties are stored in
4056 * a statically sized array.
4058 void drm_object_attach_property(struct drm_mode_object *obj,
4059 struct drm_property *property,
4062 int count = obj->properties->count;
4064 if (count == DRM_OBJECT_MAX_PROPERTY) {
4065 WARN(1, "Failed to attach object property (type: 0x%x). Please "
4066 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
4067 "you see this message on the same object type.\n",
4072 obj->properties->properties[count] = property;
4073 obj->properties->values[count] = init_val;
4074 obj->properties->count++;
4075 if (property->flags & DRM_MODE_PROP_ATOMIC)
4076 obj->properties->atomic_count++;
4078 EXPORT_SYMBOL(drm_object_attach_property);
4081 * drm_object_property_set_value - set the value of a property
4082 * @obj: drm mode object to set property value for
4083 * @property: property to set
4084 * @val: value the property should be set to
4086 * This functions sets a given property on a given object. This function only
4087 * changes the software state of the property, it does not call into the
4088 * driver's ->set_property callback.
4091 * Zero on success, error code on failure.
4093 int drm_object_property_set_value(struct drm_mode_object *obj,
4094 struct drm_property *property, uint64_t val)
4098 for (i = 0; i < obj->properties->count; i++) {
4099 if (obj->properties->properties[i] == property) {
4100 obj->properties->values[i] = val;
4107 EXPORT_SYMBOL(drm_object_property_set_value);
4110 * drm_object_property_get_value - retrieve the value of a property
4111 * @obj: drm mode object to get property value from
4112 * @property: property to retrieve
4113 * @val: storage for the property value
4115 * This function retrieves the softare state of the given property for the given
4116 * property. Since there is no driver callback to retrieve the current property
4117 * value this might be out of sync with the hardware, depending upon the driver
4121 * Zero on success, error code on failure.
4123 int drm_object_property_get_value(struct drm_mode_object *obj,
4124 struct drm_property *property, uint64_t *val)
4128 /* read-only properties bypass atomic mechanism and still store
4129 * their value in obj->properties->values[].. mostly to avoid
4130 * having to deal w/ EDID and similar props in atomic paths:
4132 if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
4133 !(property->flags & DRM_MODE_PROP_IMMUTABLE))
4134 return drm_atomic_get_property(obj, property, val);
4136 for (i = 0; i < obj->properties->count; i++) {
4137 if (obj->properties->properties[i] == property) {
4138 *val = obj->properties->values[i];
4145 EXPORT_SYMBOL(drm_object_property_get_value);
4148 * drm_mode_getproperty_ioctl - get the property metadata
4151 * @file_priv: DRM file info
4153 * This function retrieves the metadata for a given property, like the different
4154 * possible values for an enum property or the limits for a range property.
4156 * Blob properties are special
4158 * Called by the user via ioctl.
4161 * Zero on success, negative errno on failure.
4163 int drm_mode_getproperty_ioctl(struct drm_device *dev,
4164 void *data, struct drm_file *file_priv)
4166 struct drm_mode_get_property *out_resp = data;
4167 struct drm_property *property;
4169 int value_count = 0;
4172 struct drm_property_enum *prop_enum;
4173 struct drm_mode_property_enum __user *enum_ptr;
4174 uint64_t __user *values_ptr;
4176 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4179 drm_modeset_lock_all(dev);
4180 property = drm_property_find(dev, out_resp->prop_id);
4186 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4187 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4188 list_for_each_entry(prop_enum, &property->enum_list, head)
4192 value_count = property->num_values;
4194 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
4195 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
4196 out_resp->flags = property->flags;
4198 if ((out_resp->count_values >= value_count) && value_count) {
4199 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
4200 for (i = 0; i < value_count; i++) {
4201 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
4207 out_resp->count_values = value_count;
4209 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4210 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4211 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
4213 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
4214 list_for_each_entry(prop_enum, &property->enum_list, head) {
4216 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
4221 if (copy_to_user(&enum_ptr[copied].name,
4222 &prop_enum->name, DRM_PROP_NAME_LEN)) {
4229 out_resp->count_enum_blobs = enum_count;
4233 * NOTE: The idea seems to have been to use this to read all the blob
4234 * property values. But nothing ever added them to the corresponding
4235 * list, userspace always used the special-purpose get_blob ioctl to
4236 * read the value for a blob property. It also doesn't make a lot of
4237 * sense to return values here when everything else is just metadata for
4238 * the property itself.
4240 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4241 out_resp->count_enum_blobs = 0;
4243 drm_modeset_unlock_all(dev);
4247 static void drm_property_free_blob(struct kref *kref)
4249 struct drm_property_blob *blob =
4250 container_of(kref, struct drm_property_blob, base.refcount);
4252 mutex_lock(&blob->dev->mode_config.blob_lock);
4253 list_del(&blob->head_global);
4254 mutex_unlock(&blob->dev->mode_config.blob_lock);
4256 drm_mode_object_unregister(blob->dev, &blob->base);
4262 * drm_property_create_blob - Create new blob property
4264 * Creates a new blob property for a specified DRM device, optionally
4267 * @dev: DRM device to create property for
4268 * @length: Length to allocate for blob data
4269 * @data: If specified, copies data into blob
4272 * New blob property with a single reference on success, or an ERR_PTR
4275 struct drm_property_blob *
4276 drm_property_create_blob(struct drm_device *dev, size_t length,
4279 struct drm_property_blob *blob;
4282 if (!length || length > ULONG_MAX - sizeof(struct drm_property_blob))
4283 return ERR_PTR(-EINVAL);
4285 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
4287 return ERR_PTR(-ENOMEM);
4289 /* This must be explicitly initialised, so we can safely call list_del
4290 * on it in the removal handler, even if it isn't in a file list. */
4291 INIT_LIST_HEAD(&blob->head_file);
4292 blob->length = length;
4296 memcpy(blob->data, data, length);
4298 ret = drm_mode_object_get_reg(dev, &blob->base, DRM_MODE_OBJECT_BLOB,
4299 true, drm_property_free_blob);
4302 return ERR_PTR(-EINVAL);
4305 mutex_lock(&dev->mode_config.blob_lock);
4306 list_add_tail(&blob->head_global,
4307 &dev->mode_config.property_blob_list);
4308 mutex_unlock(&dev->mode_config.blob_lock);
4312 EXPORT_SYMBOL(drm_property_create_blob);
4315 * drm_property_unreference_blob - Unreference a blob property
4317 * Drop a reference on a blob property. May free the object.
4319 * @blob: Pointer to blob property
4321 void drm_property_unreference_blob(struct drm_property_blob *blob)
4326 drm_mode_object_unreference(&blob->base);
4328 EXPORT_SYMBOL(drm_property_unreference_blob);
4331 * drm_property_destroy_user_blobs - destroy all blobs created by this client
4333 * @file_priv: destroy all blobs owned by this file handle
4335 void drm_property_destroy_user_blobs(struct drm_device *dev,
4336 struct drm_file *file_priv)
4338 struct drm_property_blob *blob, *bt;
4341 * When the file gets released that means no one else can access the
4342 * blob list any more, so no need to grab dev->blob_lock.
4344 list_for_each_entry_safe(blob, bt, &file_priv->blobs, head_file) {
4345 list_del_init(&blob->head_file);
4346 drm_property_unreference_blob(blob);
4351 * drm_property_reference_blob - Take a reference on an existing property
4353 * Take a new reference on an existing blob property.
4355 * @blob: Pointer to blob property
4357 struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob)
4359 drm_mode_object_reference(&blob->base);
4362 EXPORT_SYMBOL(drm_property_reference_blob);
4365 * drm_property_lookup_blob - look up a blob property and take a reference
4367 * @id: id of the blob property
4369 * If successful, this takes an additional reference to the blob property.
4370 * callers need to make sure to eventually unreference the returned property
4371 * again, using @drm_property_unreference_blob.
4373 struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
4376 struct drm_mode_object *obj;
4377 struct drm_property_blob *blob = NULL;
4379 obj = _object_find(dev, id, DRM_MODE_OBJECT_BLOB);
4381 blob = obj_to_blob(obj);
4384 EXPORT_SYMBOL(drm_property_lookup_blob);
4387 * drm_property_replace_global_blob - atomically replace existing blob property
4389 * @replace: location of blob property pointer to be replaced
4390 * @length: length of data for new blob, or 0 for no data
4391 * @data: content for new blob, or NULL for no data
4392 * @obj_holds_id: optional object for property holding blob ID
4393 * @prop_holds_id: optional property holding blob ID
4394 * @return 0 on success or error on failure
4396 * This function will atomically replace a global property in the blob list,
4397 * optionally updating a property which holds the ID of that property. It is
4398 * guaranteed to be atomic: no caller will be allowed to see intermediate
4399 * results, and either the entire operation will succeed and clean up the
4400 * previous property, or it will fail and the state will be unchanged.
4402 * If length is 0 or data is NULL, no new blob will be created, and the holding
4403 * property, if specified, will be set to 0.
4405 * Access to the replace pointer is assumed to be protected by the caller, e.g.
4406 * by holding the relevant modesetting object lock for its parent.
4408 * For example, a drm_connector has a 'PATH' property, which contains the ID
4409 * of a blob property with the value of the MST path information. Calling this
4410 * function with replace pointing to the connector's path_blob_ptr, length and
4411 * data set for the new path information, obj_holds_id set to the connector's
4412 * base object, and prop_holds_id set to the path property name, will perform
4413 * a completely atomic update. The access to path_blob_ptr is protected by the
4414 * caller holding a lock on the connector.
4416 static int drm_property_replace_global_blob(struct drm_device *dev,
4417 struct drm_property_blob **replace,
4420 struct drm_mode_object *obj_holds_id,
4421 struct drm_property *prop_holds_id)
4423 struct drm_property_blob *new_blob = NULL;
4424 struct drm_property_blob *old_blob = NULL;
4427 WARN_ON(replace == NULL);
4429 old_blob = *replace;
4431 if (length && data) {
4432 new_blob = drm_property_create_blob(dev, length, data);
4433 if (IS_ERR(new_blob))
4434 return PTR_ERR(new_blob);
4437 /* This does not need to be synchronised with blob_lock, as the
4438 * get_properties ioctl locks all modesetting objects, and
4439 * obj_holds_id must be locked before calling here, so we cannot
4440 * have its value out of sync with the list membership modified
4441 * below under blob_lock. */
4443 ret = drm_object_property_set_value(obj_holds_id,
4446 new_blob->base.id : 0);
4451 drm_property_unreference_blob(old_blob);
4452 *replace = new_blob;
4457 drm_property_unreference_blob(new_blob);
4462 * drm_mode_getblob_ioctl - get the contents of a blob property value
4465 * @file_priv: DRM file info
4467 * This function retrieves the contents of a blob property. The value stored in
4468 * an object's blob property is just a normal modeset object id.
4470 * Called by the user via ioctl.
4473 * Zero on success, negative errno on failure.
4475 int drm_mode_getblob_ioctl(struct drm_device *dev,
4476 void *data, struct drm_file *file_priv)
4478 struct drm_mode_get_blob *out_resp = data;
4479 struct drm_property_blob *blob;
4481 void __user *blob_ptr;
4483 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4486 blob = drm_property_lookup_blob(dev, out_resp->blob_id);
4490 if (out_resp->length == blob->length) {
4491 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4492 if (copy_to_user(blob_ptr, blob->data, blob->length)) {
4497 out_resp->length = blob->length;
4499 drm_property_unreference_blob(blob);
4505 * drm_mode_createblob_ioctl - create a new blob property
4508 * @file_priv: DRM file info
4510 * This function creates a new blob property with user-defined values. In order
4511 * to give us sensible validation and checking when creating, rather than at
4512 * every potential use, we also require a type to be provided upfront.
4514 * Called by the user via ioctl.
4517 * Zero on success, negative errno on failure.
4519 int drm_mode_createblob_ioctl(struct drm_device *dev,
4520 void *data, struct drm_file *file_priv)
4522 struct drm_mode_create_blob *out_resp = data;
4523 struct drm_property_blob *blob;
4524 void __user *blob_ptr;
4527 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4530 blob = drm_property_create_blob(dev, out_resp->length, NULL);
4532 return PTR_ERR(blob);
4534 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4535 if (copy_from_user(blob->data, blob_ptr, out_resp->length)) {
4540 /* Dropping the lock between create_blob and our access here is safe
4541 * as only the same file_priv can remove the blob; at this point, it is
4542 * not associated with any file_priv. */
4543 mutex_lock(&dev->mode_config.blob_lock);
4544 out_resp->blob_id = blob->base.id;
4545 list_add_tail(&blob->head_file, &file_priv->blobs);
4546 mutex_unlock(&dev->mode_config.blob_lock);
4551 drm_property_unreference_blob(blob);
4556 * drm_mode_destroyblob_ioctl - destroy a user blob property
4559 * @file_priv: DRM file info
4561 * Destroy an existing user-defined blob property.
4563 * Called by the user via ioctl.
4566 * Zero on success, negative errno on failure.
4568 int drm_mode_destroyblob_ioctl(struct drm_device *dev,
4569 void *data, struct drm_file *file_priv)
4571 struct drm_mode_destroy_blob *out_resp = data;
4572 struct drm_property_blob *blob = NULL, *bt;
4576 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4579 blob = drm_property_lookup_blob(dev, out_resp->blob_id);
4583 mutex_lock(&dev->mode_config.blob_lock);
4584 /* Ensure the property was actually created by this user. */
4585 list_for_each_entry(bt, &file_priv->blobs, head_file) {
4597 /* We must drop head_file here, because we may not be the last
4598 * reference on the blob. */
4599 list_del_init(&blob->head_file);
4600 mutex_unlock(&dev->mode_config.blob_lock);
4602 /* One reference from lookup, and one from the filp. */
4603 drm_property_unreference_blob(blob);
4604 drm_property_unreference_blob(blob);
4609 mutex_unlock(&dev->mode_config.blob_lock);
4610 drm_property_unreference_blob(blob);
4616 * drm_mode_connector_set_path_property - set tile property on connector
4617 * @connector: connector to set property on.
4618 * @path: path to use for property; must not be NULL.
4620 * This creates a property to expose to userspace to specify a
4621 * connector path. This is mainly used for DisplayPort MST where
4622 * connectors have a topology and we want to allow userspace to give
4623 * them more meaningful names.
4626 * Zero on success, negative errno on failure.
4628 int drm_mode_connector_set_path_property(struct drm_connector *connector,
4631 struct drm_device *dev = connector->dev;
4634 ret = drm_property_replace_global_blob(dev,
4635 &connector->path_blob_ptr,
4639 dev->mode_config.path_property);
4642 EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4645 * drm_mode_connector_set_tile_property - set tile property on connector
4646 * @connector: connector to set property on.
4648 * This looks up the tile information for a connector, and creates a
4649 * property for userspace to parse if it exists. The property is of
4650 * the form of 8 integers using ':' as a separator.
4653 * Zero on success, errno on failure.
4655 int drm_mode_connector_set_tile_property(struct drm_connector *connector)
4657 struct drm_device *dev = connector->dev;
4661 if (!connector->has_tile) {
4662 ret = drm_property_replace_global_blob(dev,
4663 &connector->tile_blob_ptr,
4667 dev->mode_config.tile_property);
4671 snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4672 connector->tile_group->id, connector->tile_is_single_monitor,
4673 connector->num_h_tile, connector->num_v_tile,
4674 connector->tile_h_loc, connector->tile_v_loc,
4675 connector->tile_h_size, connector->tile_v_size);
4677 ret = drm_property_replace_global_blob(dev,
4678 &connector->tile_blob_ptr,
4682 dev->mode_config.tile_property);
4685 EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
4688 * drm_mode_connector_update_edid_property - update the edid property of a connector
4689 * @connector: drm connector
4690 * @edid: new value of the edid property
4692 * This function creates a new blob modeset object and assigns its id to the
4693 * connector's edid property.
4696 * Zero on success, negative errno on failure.
4698 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4699 const struct edid *edid)
4701 struct drm_device *dev = connector->dev;
4705 /* ignore requests to set edid when overridden */
4706 if (connector->override_edid)
4710 size = EDID_LENGTH * (1 + edid->extensions);
4712 ret = drm_property_replace_global_blob(dev,
4713 &connector->edid_blob_ptr,
4717 dev->mode_config.edid_property);
4720 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4722 /* Some properties could refer to dynamic refcnt'd objects, or things that
4723 * need special locking to handle lifetime issues (ie. to ensure the prop
4724 * value doesn't become invalid part way through the property update due to
4725 * race). The value returned by reference via 'obj' should be passed back
4726 * to drm_property_change_valid_put() after the property is set (and the
4727 * object to which the property is attached has a chance to take it's own
4730 bool drm_property_change_valid_get(struct drm_property *property,
4731 uint64_t value, struct drm_mode_object **ref)
4735 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4740 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
4741 if (value < property->values[0] || value > property->values[1])
4744 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4745 int64_t svalue = U642I64(value);
4747 if (svalue < U642I64(property->values[0]) ||
4748 svalue > U642I64(property->values[1]))
4751 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4752 uint64_t valid_mask = 0;
4754 for (i = 0; i < property->num_values; i++)
4755 valid_mask |= (1ULL << property->values[i]);
4756 return !(value & ~valid_mask);
4757 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
4758 struct drm_property_blob *blob;
4763 blob = drm_property_lookup_blob(property->dev, value);
4770 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4771 /* a zero value for an object property translates to null: */
4775 return _object_find(property->dev, value, property->values[0]) != NULL;
4778 for (i = 0; i < property->num_values; i++)
4779 if (property->values[i] == value)
4784 void drm_property_change_valid_put(struct drm_property *property,
4785 struct drm_mode_object *ref)
4790 if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4791 drm_mode_object_unreference(ref);
4792 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4793 drm_property_unreference_blob(obj_to_blob(ref));
4797 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4800 * @file_priv: DRM file info
4802 * This function sets the current value for a connectors's property. It also
4803 * calls into a driver's ->set_property callback to update the hardware state
4805 * Called by the user via ioctl.
4808 * Zero on success, negative errno on failure.
4810 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4811 void *data, struct drm_file *file_priv)
4813 struct drm_mode_connector_set_property *conn_set_prop = data;
4814 struct drm_mode_obj_set_property obj_set_prop = {
4815 .value = conn_set_prop->value,
4816 .prop_id = conn_set_prop->prop_id,
4817 .obj_id = conn_set_prop->connector_id,
4818 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4821 /* It does all the locking and checking we need */
4822 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
4825 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4826 struct drm_property *property,
4830 struct drm_connector *connector = obj_to_connector(obj);
4832 /* Do DPMS ourselves */
4833 if (property == connector->dev->mode_config.dpms_property) {
4834 ret = (*connector->funcs->dpms)(connector, (int)value);
4835 } else if (connector->funcs->set_property)
4836 ret = connector->funcs->set_property(connector, property, value);
4838 /* store the property value if successful */
4840 drm_object_property_set_value(&connector->base, property, value);
4844 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4845 struct drm_property *property,
4849 struct drm_crtc *crtc = obj_to_crtc(obj);
4851 if (crtc->funcs->set_property)
4852 ret = crtc->funcs->set_property(crtc, property, value);
4854 drm_object_property_set_value(obj, property, value);
4860 * drm_mode_plane_set_obj_prop - set the value of a property
4861 * @plane: drm plane object to set property value for
4862 * @property: property to set
4863 * @value: value the property should be set to
4865 * This functions sets a given property on a given plane object. This function
4866 * calls the driver's ->set_property callback and changes the software state of
4867 * the property if the callback succeeds.
4870 * Zero on success, error code on failure.
4872 int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4873 struct drm_property *property,
4877 struct drm_mode_object *obj = &plane->base;
4879 if (plane->funcs->set_property)
4880 ret = plane->funcs->set_property(plane, property, value);
4882 drm_object_property_set_value(obj, property, value);
4886 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4889 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4892 * @file_priv: DRM file info
4894 * This function retrieves the current value for an object's property. Compared
4895 * to the connector specific ioctl this one is extended to also work on crtc and
4898 * Called by the user via ioctl.
4901 * Zero on success, negative errno on failure.
4903 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4904 struct drm_file *file_priv)
4906 struct drm_mode_obj_get_properties *arg = data;
4907 struct drm_mode_object *obj;
4910 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4913 drm_modeset_lock_all(dev);
4915 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4920 if (!obj->properties) {
4925 ret = get_properties(obj, file_priv->atomic,
4926 (uint32_t __user *)(unsigned long)(arg->props_ptr),
4927 (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
4931 drm_mode_object_unreference(obj);
4933 drm_modeset_unlock_all(dev);
4938 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4941 * @file_priv: DRM file info
4943 * This function sets the current value for an object's property. It also calls
4944 * into a driver's ->set_property callback to update the hardware state.
4945 * Compared to the connector specific ioctl this one is extended to also work on
4946 * crtc and plane objects.
4948 * Called by the user via ioctl.
4951 * Zero on success, negative errno on failure.
4953 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4954 struct drm_file *file_priv)
4956 struct drm_mode_obj_set_property *arg = data;
4957 struct drm_mode_object *arg_obj;
4958 struct drm_mode_object *prop_obj;
4959 struct drm_property *property;
4960 int i, ret = -EINVAL;
4961 struct drm_mode_object *ref;
4963 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4966 drm_modeset_lock_all(dev);
4968 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4973 if (!arg_obj->properties)
4976 for (i = 0; i < arg_obj->properties->count; i++)
4977 if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
4980 if (i == arg_obj->properties->count)
4983 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4984 DRM_MODE_OBJECT_PROPERTY);
4989 property = obj_to_property(prop_obj);
4991 if (!drm_property_change_valid_get(property, arg->value, &ref))
4994 switch (arg_obj->type) {
4995 case DRM_MODE_OBJECT_CONNECTOR:
4996 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4999 case DRM_MODE_OBJECT_CRTC:
5000 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
5002 case DRM_MODE_OBJECT_PLANE:
5003 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
5004 property, arg->value);
5008 drm_property_change_valid_put(property, ref);
5011 drm_mode_object_unreference(arg_obj);
5013 drm_modeset_unlock_all(dev);
5018 * drm_mode_connector_attach_encoder - attach a connector to an encoder
5019 * @connector: connector to attach
5020 * @encoder: encoder to attach @connector to
5022 * This function links up a connector to an encoder. Note that the routing
5023 * restrictions between encoders and crtcs are exposed to userspace through the
5024 * possible_clones and possible_crtcs bitmasks.
5027 * Zero on success, negative errno on failure.
5029 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
5030 struct drm_encoder *encoder)
5035 * In the past, drivers have attempted to model the static association
5036 * of connector to encoder in simple connector/encoder devices using a
5037 * direct assignment of connector->encoder = encoder. This connection
5038 * is a logical one and the responsibility of the core, so drivers are
5039 * expected not to mess with this.
5041 * Note that the error return should've been enough here, but a large
5042 * majority of drivers ignores the return value, so add in a big WARN
5043 * to get people's attention.
5045 if (WARN_ON(connector->encoder))
5048 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
5049 if (connector->encoder_ids[i] == 0) {
5050 connector->encoder_ids[i] = encoder->base.id;
5056 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
5059 * drm_mode_crtc_set_gamma_size - set the gamma table size
5060 * @crtc: CRTC to set the gamma table size for
5061 * @gamma_size: size of the gamma table
5063 * Drivers which support gamma tables should set this to the supported gamma
5064 * table size when initializing the CRTC. Currently the drm core only supports a
5065 * fixed gamma table size.
5068 * Zero on success, negative errno on failure.
5070 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
5073 crtc->gamma_size = gamma_size;
5075 crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
5077 if (!crtc->gamma_store) {
5078 crtc->gamma_size = 0;
5084 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
5087 * drm_mode_gamma_set_ioctl - set the gamma table
5090 * @file_priv: DRM file info
5092 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
5093 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
5095 * Called by the user via ioctl.
5098 * Zero on success, negative errno on failure.
5100 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
5101 void *data, struct drm_file *file_priv)
5103 struct drm_mode_crtc_lut *crtc_lut = data;
5104 struct drm_crtc *crtc;
5105 void *r_base, *g_base, *b_base;
5109 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5112 drm_modeset_lock_all(dev);
5113 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5119 if (crtc->funcs->gamma_set == NULL) {
5124 /* memcpy into gamma store */
5125 if (crtc_lut->gamma_size != crtc->gamma_size) {
5130 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5131 r_base = crtc->gamma_store;
5132 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
5137 g_base = r_base + size;
5138 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
5143 b_base = g_base + size;
5144 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
5149 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
5152 drm_modeset_unlock_all(dev);
5158 * drm_mode_gamma_get_ioctl - get the gamma table
5161 * @file_priv: DRM file info
5163 * Copy the current gamma table into the storage provided. This also provides
5164 * the gamma table size the driver expects, which can be used to size the
5165 * allocated storage.
5167 * Called by the user via ioctl.
5170 * Zero on success, negative errno on failure.
5172 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
5173 void *data, struct drm_file *file_priv)
5175 struct drm_mode_crtc_lut *crtc_lut = data;
5176 struct drm_crtc *crtc;
5177 void *r_base, *g_base, *b_base;
5181 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5184 drm_modeset_lock_all(dev);
5185 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5191 /* memcpy into gamma store */
5192 if (crtc_lut->gamma_size != crtc->gamma_size) {
5197 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5198 r_base = crtc->gamma_store;
5199 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
5204 g_base = r_base + size;
5205 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
5210 b_base = g_base + size;
5211 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
5216 drm_modeset_unlock_all(dev);
5221 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
5224 * @file_priv: DRM file info
5226 * This schedules an asynchronous update on a given CRTC, called page flip.
5227 * Optionally a drm event is generated to signal the completion of the event.
5228 * Generic drivers cannot assume that a pageflip with changed framebuffer
5229 * properties (including driver specific metadata like tiling layout) will work,
5230 * but some drivers support e.g. pixel format changes through the pageflip
5233 * Called by the user via ioctl.
5236 * Zero on success, negative errno on failure.
5238 int drm_mode_page_flip_ioctl(struct drm_device *dev,
5239 void *data, struct drm_file *file_priv)
5241 struct drm_mode_crtc_page_flip *page_flip = data;
5242 struct drm_crtc *crtc;
5243 struct drm_framebuffer *fb = NULL;
5244 struct drm_pending_vblank_event *e = NULL;
5247 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
5248 page_flip->reserved != 0)
5251 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
5254 crtc = drm_crtc_find(dev, page_flip->crtc_id);
5258 drm_modeset_lock_crtc(crtc, crtc->primary);
5259 if (crtc->primary->fb == NULL) {
5260 /* The framebuffer is currently unbound, presumably
5261 * due to a hotplug event, that userspace has not
5268 if (crtc->funcs->page_flip == NULL)
5271 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
5278 const struct drm_plane_state *state = crtc->primary->state;
5280 ret = check_src_coords(state->src_x, state->src_y,
5281 state->src_w, state->src_h, fb);
5283 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
5288 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
5289 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
5294 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
5295 e = kzalloc(sizeof *e, GFP_KERNEL);
5300 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
5301 e->event.base.length = sizeof(e->event);
5302 e->event.user_data = page_flip->user_data;
5303 ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base);
5310 crtc->primary->old_fb = crtc->primary->fb;
5311 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
5313 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT)
5314 drm_event_cancel_free(dev, &e->base);
5315 /* Keep the old fb, don't unref it. */
5316 crtc->primary->old_fb = NULL;
5318 crtc->primary->fb = fb;
5319 /* Unref only the old framebuffer. */
5325 drm_framebuffer_unreference(fb);
5326 if (crtc->primary->old_fb)
5327 drm_framebuffer_unreference(crtc->primary->old_fb);
5328 crtc->primary->old_fb = NULL;
5329 drm_modeset_unlock_crtc(crtc);
5335 * drm_mode_config_reset - call ->reset callbacks
5338 * This functions calls all the crtc's, encoder's and connector's ->reset
5339 * callback. Drivers can use this in e.g. their driver load or resume code to
5340 * reset hardware and software state.
5342 void drm_mode_config_reset(struct drm_device *dev)
5344 struct drm_crtc *crtc;
5345 struct drm_plane *plane;
5346 struct drm_encoder *encoder;
5347 struct drm_connector *connector;
5349 drm_for_each_plane(plane, dev)
5350 if (plane->funcs->reset)
5351 plane->funcs->reset(plane);
5353 drm_for_each_crtc(crtc, dev)
5354 if (crtc->funcs->reset)
5355 crtc->funcs->reset(crtc);
5357 drm_for_each_encoder(encoder, dev)
5358 if (encoder->funcs->reset)
5359 encoder->funcs->reset(encoder);
5361 mutex_lock(&dev->mode_config.mutex);
5362 drm_for_each_connector(connector, dev)
5363 if (connector->funcs->reset)
5364 connector->funcs->reset(connector);
5365 mutex_unlock(&dev->mode_config.mutex);
5367 EXPORT_SYMBOL(drm_mode_config_reset);
5370 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5373 * @file_priv: DRM file info
5375 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5376 * TTM or something else entirely) and returns the resulting buffer handle. This
5377 * handle can then be wrapped up into a framebuffer modeset object.
5379 * Note that userspace is not allowed to use such objects for render
5380 * acceleration - drivers must create their own private ioctls for such a use
5383 * Called by the user via ioctl.
5386 * Zero on success, negative errno on failure.
5388 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
5389 void *data, struct drm_file *file_priv)
5391 struct drm_mode_create_dumb *args = data;
5392 u32 cpp, stride, size;
5394 if (!dev->driver->dumb_create)
5396 if (!args->width || !args->height || !args->bpp)
5399 /* overflow checks for 32bit size calculations */
5400 /* NOTE: DIV_ROUND_UP() can overflow */
5401 cpp = DIV_ROUND_UP(args->bpp, 8);
5402 if (!cpp || cpp > 0xffffffffU / args->width)
5404 stride = cpp * args->width;
5405 if (args->height > 0xffffffffU / stride)
5408 /* test for wrap-around */
5409 size = args->height * stride;
5410 if (PAGE_ALIGN(size) == 0)
5414 * handle, pitch and size are output parameters. Zero them out to
5415 * prevent drivers from accidentally using uninitialized data. Since
5416 * not all existing userspace is clearing these fields properly we
5417 * cannot reject IOCTL with garbage in them.
5423 return dev->driver->dumb_create(file_priv, dev, args);
5427 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5430 * @file_priv: DRM file info
5432 * Allocate an offset in the drm device node's address space to be able to
5433 * memory map a dumb buffer.
5435 * Called by the user via ioctl.
5438 * Zero on success, negative errno on failure.
5440 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
5441 void *data, struct drm_file *file_priv)
5443 struct drm_mode_map_dumb *args = data;
5445 /* call driver ioctl to get mmap offset */
5446 if (!dev->driver->dumb_map_offset)
5449 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
5453 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5456 * @file_priv: DRM file info
5458 * This destroys the userspace handle for the given dumb backing storage buffer.
5459 * Since buffer objects must be reference counted in the kernel a buffer object
5460 * won't be immediately freed if a framebuffer modeset object still uses it.
5462 * Called by the user via ioctl.
5465 * Zero on success, negative errno on failure.
5467 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
5468 void *data, struct drm_file *file_priv)
5470 struct drm_mode_destroy_dumb *args = data;
5472 if (!dev->driver->dumb_destroy)
5475 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
5479 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5480 * @format: pixel format (DRM_FORMAT_*)
5481 * @depth: storage for the depth value
5482 * @bpp: storage for the bpp value
5484 * This only supports RGB formats here for compat with code that doesn't use
5485 * pixel formats directly yet.
5487 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
5492 case DRM_FORMAT_RGB332:
5493 case DRM_FORMAT_BGR233:
5497 case DRM_FORMAT_XRGB1555:
5498 case DRM_FORMAT_XBGR1555:
5499 case DRM_FORMAT_RGBX5551:
5500 case DRM_FORMAT_BGRX5551:
5501 case DRM_FORMAT_ARGB1555:
5502 case DRM_FORMAT_ABGR1555:
5503 case DRM_FORMAT_RGBA5551:
5504 case DRM_FORMAT_BGRA5551:
5508 case DRM_FORMAT_RGB565:
5509 case DRM_FORMAT_BGR565:
5513 case DRM_FORMAT_RGB888:
5514 case DRM_FORMAT_BGR888:
5518 case DRM_FORMAT_XRGB8888:
5519 case DRM_FORMAT_XBGR8888:
5520 case DRM_FORMAT_RGBX8888:
5521 case DRM_FORMAT_BGRX8888:
5525 case DRM_FORMAT_XRGB2101010:
5526 case DRM_FORMAT_XBGR2101010:
5527 case DRM_FORMAT_RGBX1010102:
5528 case DRM_FORMAT_BGRX1010102:
5529 case DRM_FORMAT_ARGB2101010:
5530 case DRM_FORMAT_ABGR2101010:
5531 case DRM_FORMAT_RGBA1010102:
5532 case DRM_FORMAT_BGRA1010102:
5536 case DRM_FORMAT_ARGB8888:
5537 case DRM_FORMAT_ABGR8888:
5538 case DRM_FORMAT_RGBA8888:
5539 case DRM_FORMAT_BGRA8888:
5544 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5545 drm_get_format_name(format));
5551 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
5554 * drm_format_num_planes - get the number of planes for format
5555 * @format: pixel format (DRM_FORMAT_*)
5558 * The number of planes used by the specified pixel format.
5560 int drm_format_num_planes(uint32_t format)
5563 case DRM_FORMAT_YUV410:
5564 case DRM_FORMAT_YVU410:
5565 case DRM_FORMAT_YUV411:
5566 case DRM_FORMAT_YVU411:
5567 case DRM_FORMAT_YUV420:
5568 case DRM_FORMAT_YVU420:
5569 case DRM_FORMAT_YUV422:
5570 case DRM_FORMAT_YVU422:
5571 case DRM_FORMAT_YUV444:
5572 case DRM_FORMAT_YVU444:
5574 case DRM_FORMAT_NV12:
5575 case DRM_FORMAT_NV21:
5576 case DRM_FORMAT_NV16:
5577 case DRM_FORMAT_NV61:
5578 case DRM_FORMAT_NV24:
5579 case DRM_FORMAT_NV42:
5585 EXPORT_SYMBOL(drm_format_num_planes);
5588 * drm_format_plane_cpp - determine the bytes per pixel value
5589 * @format: pixel format (DRM_FORMAT_*)
5590 * @plane: plane index
5593 * The bytes per pixel value for the specified plane.
5595 int drm_format_plane_cpp(uint32_t format, int plane)
5600 if (plane >= drm_format_num_planes(format))
5604 case DRM_FORMAT_YUYV:
5605 case DRM_FORMAT_YVYU:
5606 case DRM_FORMAT_UYVY:
5607 case DRM_FORMAT_VYUY:
5609 case DRM_FORMAT_NV12:
5610 case DRM_FORMAT_NV21:
5611 case DRM_FORMAT_NV16:
5612 case DRM_FORMAT_NV61:
5613 case DRM_FORMAT_NV24:
5614 case DRM_FORMAT_NV42:
5615 return plane ? 2 : 1;
5616 case DRM_FORMAT_YUV410:
5617 case DRM_FORMAT_YVU410:
5618 case DRM_FORMAT_YUV411:
5619 case DRM_FORMAT_YVU411:
5620 case DRM_FORMAT_YUV420:
5621 case DRM_FORMAT_YVU420:
5622 case DRM_FORMAT_YUV422:
5623 case DRM_FORMAT_YVU422:
5624 case DRM_FORMAT_YUV444:
5625 case DRM_FORMAT_YVU444:
5628 drm_fb_get_bpp_depth(format, &depth, &bpp);
5632 EXPORT_SYMBOL(drm_format_plane_cpp);
5635 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5636 * @format: pixel format (DRM_FORMAT_*)
5639 * The horizontal chroma subsampling factor for the
5640 * specified pixel format.
5642 int drm_format_horz_chroma_subsampling(uint32_t format)
5645 case DRM_FORMAT_YUV411:
5646 case DRM_FORMAT_YVU411:
5647 case DRM_FORMAT_YUV410:
5648 case DRM_FORMAT_YVU410:
5650 case DRM_FORMAT_YUYV:
5651 case DRM_FORMAT_YVYU:
5652 case DRM_FORMAT_UYVY:
5653 case DRM_FORMAT_VYUY:
5654 case DRM_FORMAT_NV12:
5655 case DRM_FORMAT_NV21:
5656 case DRM_FORMAT_NV16:
5657 case DRM_FORMAT_NV61:
5658 case DRM_FORMAT_YUV422:
5659 case DRM_FORMAT_YVU422:
5660 case DRM_FORMAT_YUV420:
5661 case DRM_FORMAT_YVU420:
5667 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5670 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5671 * @format: pixel format (DRM_FORMAT_*)
5674 * The vertical chroma subsampling factor for the
5675 * specified pixel format.
5677 int drm_format_vert_chroma_subsampling(uint32_t format)
5680 case DRM_FORMAT_YUV410:
5681 case DRM_FORMAT_YVU410:
5683 case DRM_FORMAT_YUV420:
5684 case DRM_FORMAT_YVU420:
5685 case DRM_FORMAT_NV12:
5686 case DRM_FORMAT_NV21:
5692 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
5695 * drm_format_plane_width - width of the plane given the first plane
5696 * @width: width of the first plane
5697 * @format: pixel format
5698 * @plane: plane index
5701 * The width of @plane, given that the width of the first plane is @width.
5703 int drm_format_plane_width(int width, uint32_t format, int plane)
5705 if (plane >= drm_format_num_planes(format))
5711 return width / drm_format_horz_chroma_subsampling(format);
5713 EXPORT_SYMBOL(drm_format_plane_width);
5716 * drm_format_plane_height - height of the plane given the first plane
5717 * @height: height of the first plane
5718 * @format: pixel format
5719 * @plane: plane index
5722 * The height of @plane, given that the height of the first plane is @height.
5724 int drm_format_plane_height(int height, uint32_t format, int plane)
5726 if (plane >= drm_format_num_planes(format))
5732 return height / drm_format_vert_chroma_subsampling(format);
5734 EXPORT_SYMBOL(drm_format_plane_height);
5737 * drm_rotation_simplify() - Try to simplify the rotation
5738 * @rotation: Rotation to be simplified
5739 * @supported_rotations: Supported rotations
5741 * Attempt to simplify the rotation to a form that is supported.
5742 * Eg. if the hardware supports everything except DRM_REFLECT_X
5743 * one could call this function like this:
5745 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5746 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5747 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5749 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5750 * transforms the hardware supports, this function may not
5751 * be able to produce a supported transform, so the caller should
5752 * check the result afterwards.
5754 unsigned int drm_rotation_simplify(unsigned int rotation,
5755 unsigned int supported_rotations)
5757 if (rotation & ~supported_rotations) {
5758 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5759 rotation = (rotation & DRM_REFLECT_MASK) |
5760 BIT((ffs(rotation & DRM_ROTATE_MASK) + 1) % 4);
5765 EXPORT_SYMBOL(drm_rotation_simplify);
5768 * drm_mode_config_init - initialize DRM mode_configuration structure
5771 * Initialize @dev's mode_config structure, used for tracking the graphics
5772 * configuration of @dev.
5774 * Since this initializes the modeset locks, no locking is possible. Which is no
5775 * problem, since this should happen single threaded at init time. It is the
5776 * driver's problem to ensure this guarantee.
5779 void drm_mode_config_init(struct drm_device *dev)
5781 mutex_init(&dev->mode_config.mutex);
5782 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
5783 mutex_init(&dev->mode_config.idr_mutex);
5784 mutex_init(&dev->mode_config.fb_lock);
5785 mutex_init(&dev->mode_config.blob_lock);
5786 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5787 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5788 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5789 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5790 INIT_LIST_HEAD(&dev->mode_config.property_list);
5791 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5792 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5793 idr_init(&dev->mode_config.crtc_idr);
5794 idr_init(&dev->mode_config.tile_idr);
5795 ida_init(&dev->mode_config.connector_ida);
5797 drm_modeset_lock_all(dev);
5798 drm_mode_create_standard_properties(dev);
5799 drm_modeset_unlock_all(dev);
5801 /* Just to be sure */
5802 dev->mode_config.num_fb = 0;
5803 dev->mode_config.num_connector = 0;
5804 dev->mode_config.num_crtc = 0;
5805 dev->mode_config.num_encoder = 0;
5806 dev->mode_config.num_overlay_plane = 0;
5807 dev->mode_config.num_total_plane = 0;
5809 EXPORT_SYMBOL(drm_mode_config_init);
5812 * drm_mode_config_cleanup - free up DRM mode_config info
5815 * Free up all the connectors and CRTCs associated with this DRM device, then
5816 * free up the framebuffers and associated buffer objects.
5818 * Note that since this /should/ happen single-threaded at driver/device
5819 * teardown time, no locking is required. It's the driver's job to ensure that
5820 * this guarantee actually holds true.
5822 * FIXME: cleanup any dangling user buffer objects too
5824 void drm_mode_config_cleanup(struct drm_device *dev)
5826 struct drm_connector *connector, *ot;
5827 struct drm_crtc *crtc, *ct;
5828 struct drm_encoder *encoder, *enct;
5829 struct drm_framebuffer *fb, *fbt;
5830 struct drm_property *property, *pt;
5831 struct drm_property_blob *blob, *bt;
5832 struct drm_plane *plane, *plt;
5834 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5836 encoder->funcs->destroy(encoder);
5839 list_for_each_entry_safe(connector, ot,
5840 &dev->mode_config.connector_list, head) {
5841 connector->funcs->destroy(connector);
5844 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5846 drm_property_destroy(dev, property);
5849 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5851 plane->funcs->destroy(plane);
5854 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5855 crtc->funcs->destroy(crtc);
5858 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5860 drm_property_unreference_blob(blob);
5864 * Single-threaded teardown context, so it's not required to grab the
5865 * fb_lock to protect against concurrent fb_list access. Contrary, it
5866 * would actually deadlock with the drm_framebuffer_cleanup function.
5868 * Also, if there are any framebuffers left, that's a driver leak now,
5869 * so politely WARN about this.
5871 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5872 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5873 drm_framebuffer_free(&fb->base.refcount);
5876 ida_destroy(&dev->mode_config.connector_ida);
5877 idr_destroy(&dev->mode_config.tile_idr);
5878 idr_destroy(&dev->mode_config.crtc_idr);
5879 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
5881 EXPORT_SYMBOL(drm_mode_config_cleanup);
5883 struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5884 unsigned int supported_rotations)
5886 static const struct drm_prop_enum_list props[] = {
5887 { DRM_ROTATE_0, "rotate-0" },
5888 { DRM_ROTATE_90, "rotate-90" },
5889 { DRM_ROTATE_180, "rotate-180" },
5890 { DRM_ROTATE_270, "rotate-270" },
5891 { DRM_REFLECT_X, "reflect-x" },
5892 { DRM_REFLECT_Y, "reflect-y" },
5895 return drm_property_create_bitmask(dev, 0, "rotation",
5896 props, ARRAY_SIZE(props),
5897 supported_rotations);
5899 EXPORT_SYMBOL(drm_mode_create_rotation_property);
5904 * Tile groups are used to represent tiled monitors with a unique
5905 * integer identifier. Tiled monitors using DisplayID v1.3 have
5906 * a unique 8-byte handle, we store this in a tile group, so we
5907 * have a common identifier for all tiles in a monitor group.
5909 static void drm_tile_group_free(struct kref *kref)
5911 struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
5912 struct drm_device *dev = tg->dev;
5913 mutex_lock(&dev->mode_config.idr_mutex);
5914 idr_remove(&dev->mode_config.tile_idr, tg->id);
5915 mutex_unlock(&dev->mode_config.idr_mutex);
5920 * drm_mode_put_tile_group - drop a reference to a tile group.
5922 * @tg: tile group to drop reference to.
5924 * drop reference to tile group and free if 0.
5926 void drm_mode_put_tile_group(struct drm_device *dev,
5927 struct drm_tile_group *tg)
5929 kref_put(&tg->refcount, drm_tile_group_free);
5933 * drm_mode_get_tile_group - get a reference to an existing tile group
5935 * @topology: 8-bytes unique per monitor.
5937 * Use the unique bytes to get a reference to an existing tile group.
5940 * tile group or NULL if not found.
5942 struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
5945 struct drm_tile_group *tg;
5947 mutex_lock(&dev->mode_config.idr_mutex);
5948 idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
5949 if (!memcmp(tg->group_data, topology, 8)) {
5950 if (!kref_get_unless_zero(&tg->refcount))
5952 mutex_unlock(&dev->mode_config.idr_mutex);
5956 mutex_unlock(&dev->mode_config.idr_mutex);
5959 EXPORT_SYMBOL(drm_mode_get_tile_group);
5962 * drm_mode_create_tile_group - create a tile group from a displayid description
5964 * @topology: 8-bytes unique per monitor.
5966 * Create a tile group for the unique monitor, and get a unique
5967 * identifier for the tile group.
5970 * new tile group or error.
5972 struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
5975 struct drm_tile_group *tg;
5978 tg = kzalloc(sizeof(*tg), GFP_KERNEL);
5980 return ERR_PTR(-ENOMEM);
5982 kref_init(&tg->refcount);
5983 memcpy(tg->group_data, topology, 8);
5986 mutex_lock(&dev->mode_config.idr_mutex);
5987 ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
5995 mutex_unlock(&dev->mode_config.idr_mutex);
5998 EXPORT_SYMBOL(drm_mode_create_tile_group);