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" },
173 static const struct drm_prop_enum_list drm_encoder_enum_list[] = {
174 { DRM_MODE_ENCODER_NONE, "None" },
175 { DRM_MODE_ENCODER_DAC, "DAC" },
176 { DRM_MODE_ENCODER_TMDS, "TMDS" },
177 { DRM_MODE_ENCODER_LVDS, "LVDS" },
178 { DRM_MODE_ENCODER_TVDAC, "TV" },
179 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
180 { DRM_MODE_ENCODER_DSI, "DSI" },
181 { DRM_MODE_ENCODER_DPMST, "DP MST" },
184 static const struct drm_prop_enum_list drm_subpixel_enum_list[] = {
185 { SubPixelUnknown, "Unknown" },
186 { SubPixelHorizontalRGB, "Horizontal RGB" },
187 { SubPixelHorizontalBGR, "Horizontal BGR" },
188 { SubPixelVerticalRGB, "Vertical RGB" },
189 { SubPixelVerticalBGR, "Vertical BGR" },
190 { SubPixelNone, "None" },
193 void drm_connector_ida_init(void)
197 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
198 ida_init(&drm_connector_enum_list[i].ida);
201 void drm_connector_ida_destroy(void)
205 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
206 ida_destroy(&drm_connector_enum_list[i].ida);
210 * drm_get_connector_status_name - return a string for connector status
211 * @status: connector status to compute name of
213 * In contrast to the other drm_get_*_name functions this one here returns a
214 * const pointer and hence is threadsafe.
216 const char *drm_get_connector_status_name(enum drm_connector_status status)
218 if (status == connector_status_connected)
220 else if (status == connector_status_disconnected)
221 return "disconnected";
225 EXPORT_SYMBOL(drm_get_connector_status_name);
228 * drm_get_subpixel_order_name - return a string for a given subpixel enum
229 * @order: enum of subpixel_order
231 * Note you could abuse this and return something out of bounds, but that
232 * would be a caller error. No unscrubbed user data should make it here.
234 const char *drm_get_subpixel_order_name(enum subpixel_order order)
236 return drm_subpixel_enum_list[order].name;
238 EXPORT_SYMBOL(drm_get_subpixel_order_name);
240 static char printable_char(int c)
242 return isascii(c) && isprint(c) ? c : '?';
246 * drm_get_format_name - return a string for drm fourcc format
247 * @format: format to compute name of
249 * Note that the buffer used by this function is globally shared and owned by
250 * the function itself.
252 * FIXME: This isn't really multithreading safe.
254 const char *drm_get_format_name(uint32_t format)
258 snprintf(buf, sizeof(buf),
259 "%c%c%c%c %s-endian (0x%08x)",
260 printable_char(format & 0xff),
261 printable_char((format >> 8) & 0xff),
262 printable_char((format >> 16) & 0xff),
263 printable_char((format >> 24) & 0x7f),
264 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
269 EXPORT_SYMBOL(drm_get_format_name);
272 * Internal function to assign a slot in the object idr and optionally
273 * register the object into the idr.
275 static int drm_mode_object_get_reg(struct drm_device *dev,
276 struct drm_mode_object *obj,
279 void (*obj_free_cb)(struct kref *kref))
283 mutex_lock(&dev->mode_config.idr_mutex);
284 ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
287 * Set up the object linking under the protection of the idr
288 * lock so that other users can't see inconsistent state.
291 obj->type = obj_type;
293 obj->free_cb = obj_free_cb;
294 kref_init(&obj->refcount);
297 mutex_unlock(&dev->mode_config.idr_mutex);
299 return ret < 0 ? ret : 0;
303 * drm_mode_object_get - allocate a new modeset identifier
305 * @obj: object pointer, used to generate unique ID
306 * @obj_type: object type
308 * Create a unique identifier based on @ptr in @dev's identifier space. Used
309 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
310 * modeset identifiers are _not_ reference counted. Hence don't use this for
311 * reference counted modeset objects like framebuffers.
314 * Zero on success, error code on failure.
316 int drm_mode_object_get(struct drm_device *dev,
317 struct drm_mode_object *obj, uint32_t obj_type)
319 return drm_mode_object_get_reg(dev, obj, obj_type, true, NULL);
322 static void drm_mode_object_register(struct drm_device *dev,
323 struct drm_mode_object *obj)
325 mutex_lock(&dev->mode_config.idr_mutex);
326 idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
327 mutex_unlock(&dev->mode_config.idr_mutex);
331 * drm_mode_object_unregister - free a modeset identifer
333 * @object: object to free
335 * Free @id from @dev's unique identifier pool.
336 * This function can be called multiple times, and guards against
338 * These modeset identifiers are _not_ reference counted. Hence don't use this
339 * for reference counted modeset objects like framebuffers.
341 void drm_mode_object_unregister(struct drm_device *dev,
342 struct drm_mode_object *object)
344 mutex_lock(&dev->mode_config.idr_mutex);
346 idr_remove(&dev->mode_config.crtc_idr, object->id);
349 mutex_unlock(&dev->mode_config.idr_mutex);
352 static struct drm_mode_object *_object_find(struct drm_device *dev,
353 uint32_t id, uint32_t type)
355 struct drm_mode_object *obj = NULL;
357 mutex_lock(&dev->mode_config.idr_mutex);
358 obj = idr_find(&dev->mode_config.crtc_idr, id);
359 if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
361 if (obj && obj->id != id)
363 /* don't leak out unref'd fb's */
365 obj->type == DRM_MODE_OBJECT_BLOB)
368 if (obj && obj->free_cb) {
369 if (!kref_get_unless_zero(&obj->refcount))
372 mutex_unlock(&dev->mode_config.idr_mutex);
378 * drm_mode_object_find - look up a drm object with static lifetime
380 * @id: id of the mode object
381 * @type: type of the mode object
383 * Note that framebuffers cannot be looked up with this functions - since those
384 * are reference counted, they need special treatment. Even with
385 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
386 * rather than WARN_ON()).
388 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
389 uint32_t id, uint32_t type)
391 struct drm_mode_object *obj = NULL;
393 /* Framebuffers are reference counted and need their own lookup
395 WARN_ON(type == DRM_MODE_OBJECT_FB || type == DRM_MODE_OBJECT_BLOB);
396 obj = _object_find(dev, id, type);
399 EXPORT_SYMBOL(drm_mode_object_find);
401 void drm_mode_object_unreference(struct drm_mode_object *obj)
404 DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, atomic_read(&obj->refcount.refcount));
405 kref_put(&obj->refcount, obj->free_cb);
408 EXPORT_SYMBOL(drm_mode_object_unreference);
411 * drm_mode_object_reference - incr the fb refcnt
414 * This function operates only on refcounted objects.
415 * This functions increments the object's refcount.
417 void drm_mode_object_reference(struct drm_mode_object *obj)
420 DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, atomic_read(&obj->refcount.refcount));
421 kref_get(&obj->refcount);
424 EXPORT_SYMBOL(drm_mode_object_reference);
426 static void drm_framebuffer_free(struct kref *kref)
428 struct drm_framebuffer *fb =
429 container_of(kref, struct drm_framebuffer, base.refcount);
430 struct drm_device *dev = fb->dev;
433 * The lookup idr holds a weak reference, which has not necessarily been
434 * removed at this point. Check for that.
436 drm_mode_object_unregister(dev, &fb->base);
438 fb->funcs->destroy(fb);
442 * drm_framebuffer_init - initialize a framebuffer
444 * @fb: framebuffer to be initialized
445 * @funcs: ... with these functions
447 * Allocates an ID for the framebuffer's parent mode object, sets its mode
448 * functions & device file and adds it to the master fd list.
451 * This functions publishes the fb and makes it available for concurrent access
452 * by other users. Which means by this point the fb _must_ be fully set up -
453 * since all the fb attributes are invariant over its lifetime, no further
454 * locking but only correct reference counting is required.
457 * Zero on success, error code on failure.
459 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
460 const struct drm_framebuffer_funcs *funcs)
464 INIT_LIST_HEAD(&fb->filp_head);
468 ret = drm_mode_object_get_reg(dev, &fb->base, DRM_MODE_OBJECT_FB,
469 false, drm_framebuffer_free);
473 mutex_lock(&dev->mode_config.fb_lock);
474 dev->mode_config.num_fb++;
475 list_add(&fb->head, &dev->mode_config.fb_list);
476 mutex_unlock(&dev->mode_config.fb_lock);
478 drm_mode_object_register(dev, &fb->base);
482 EXPORT_SYMBOL(drm_framebuffer_init);
485 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
487 * @id: id of the fb object
489 * If successful, this grabs an additional reference to the framebuffer -
490 * callers need to make sure to eventually unreference the returned framebuffer
491 * again, using @drm_framebuffer_unreference.
493 struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
496 struct drm_mode_object *obj;
497 struct drm_framebuffer *fb = NULL;
499 obj = _object_find(dev, id, DRM_MODE_OBJECT_FB);
504 EXPORT_SYMBOL(drm_framebuffer_lookup);
507 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
508 * @fb: fb to unregister
510 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
511 * those used for fbdev. Note that the caller must hold a reference of it's own,
512 * i.e. the object may not be destroyed through this call (since it'll lead to a
513 * locking inversion).
515 void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
517 struct drm_device *dev;
524 /* Mark fb as reaped and drop idr ref. */
525 drm_mode_object_unregister(dev, &fb->base);
527 EXPORT_SYMBOL(drm_framebuffer_unregister_private);
530 * drm_framebuffer_cleanup - remove a framebuffer object
531 * @fb: framebuffer to remove
533 * Cleanup framebuffer. This function is intended to be used from the drivers
534 * ->destroy callback. It can also be used to clean up driver private
535 * framebuffers embedded into a larger structure.
537 * Note that this function does not remove the fb from active usuage - if it is
538 * still used anywhere, hilarity can ensue since userspace could call getfb on
539 * the id and get back -EINVAL. Obviously no concern at driver unload time.
541 * Also, the framebuffer will not be removed from the lookup idr - for
542 * user-created framebuffers this will happen in in the rmfb ioctl. For
543 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
544 * drm_framebuffer_unregister_private.
546 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
548 struct drm_device *dev = fb->dev;
550 mutex_lock(&dev->mode_config.fb_lock);
552 dev->mode_config.num_fb--;
553 mutex_unlock(&dev->mode_config.fb_lock);
555 EXPORT_SYMBOL(drm_framebuffer_cleanup);
558 * drm_framebuffer_remove - remove and unreference a framebuffer object
559 * @fb: framebuffer to remove
561 * Scans all the CRTCs and planes in @dev's mode_config. If they're
562 * using @fb, removes it, setting it to NULL. Then drops the reference to the
563 * passed-in framebuffer. Might take the modeset locks.
565 * Note that this function optimizes the cleanup away if the caller holds the
566 * last reference to the framebuffer. It is also guaranteed to not take the
567 * modeset locks in this case.
569 void drm_framebuffer_remove(struct drm_framebuffer *fb)
571 struct drm_device *dev;
572 struct drm_crtc *crtc;
573 struct drm_plane *plane;
574 struct drm_mode_set set;
582 WARN_ON(!list_empty(&fb->filp_head));
585 * drm ABI mandates that we remove any deleted framebuffers from active
586 * useage. But since most sane clients only remove framebuffers they no
587 * longer need, try to optimize this away.
589 * Since we're holding a reference ourselves, observing a refcount of 1
590 * means that we're the last holder and can skip it. Also, the refcount
591 * can never increase from 1 again, so we don't need any barriers or
594 * Note that userspace could try to race with use and instate a new
595 * usage _after_ we've cleared all current ones. End result will be an
596 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
599 if (drm_framebuffer_read_refcount(fb) > 1) {
600 drm_modeset_lock_all(dev);
601 /* remove from any CRTC */
602 drm_for_each_crtc(crtc, dev) {
603 if (crtc->primary->fb == fb) {
604 /* should turn off the crtc */
605 memset(&set, 0, sizeof(struct drm_mode_set));
608 ret = drm_mode_set_config_internal(&set);
610 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
614 drm_for_each_plane(plane, dev) {
616 drm_plane_force_disable(plane);
618 drm_modeset_unlock_all(dev);
621 drm_framebuffer_unreference(fb);
623 EXPORT_SYMBOL(drm_framebuffer_remove);
625 DEFINE_WW_CLASS(crtc_ww_class);
627 static unsigned int drm_num_crtcs(struct drm_device *dev)
629 unsigned int num = 0;
630 struct drm_crtc *tmp;
632 drm_for_each_crtc(tmp, dev) {
640 * drm_crtc_init_with_planes - Initialise a new CRTC object with
641 * specified primary and cursor planes.
643 * @crtc: CRTC object to init
644 * @primary: Primary plane for CRTC
645 * @cursor: Cursor plane for CRTC
646 * @funcs: callbacks for the new CRTC
647 * @name: printf style format string for the CRTC name, or NULL for default name
649 * Inits a new object created as base part of a driver crtc object.
652 * Zero on success, error code on failure.
654 int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
655 struct drm_plane *primary,
656 struct drm_plane *cursor,
657 const struct drm_crtc_funcs *funcs,
658 const char *name, ...)
660 struct drm_mode_config *config = &dev->mode_config;
663 WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY);
664 WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR);
669 drm_modeset_lock_init(&crtc->mutex);
670 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
678 crtc->name = kvasprintf(GFP_KERNEL, name, ap);
681 crtc->name = kasprintf(GFP_KERNEL, "crtc-%d",
685 drm_mode_object_unregister(dev, &crtc->base);
689 crtc->base.properties = &crtc->properties;
691 list_add_tail(&crtc->head, &config->crtc_list);
694 crtc->primary = primary;
695 crtc->cursor = cursor;
697 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
699 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
701 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
702 drm_object_attach_property(&crtc->base, config->prop_active, 0);
703 drm_object_attach_property(&crtc->base, config->prop_mode_id, 0);
708 EXPORT_SYMBOL(drm_crtc_init_with_planes);
711 * drm_crtc_cleanup - Clean up the core crtc usage
712 * @crtc: CRTC to cleanup
714 * This function cleans up @crtc and removes it from the DRM mode setting
715 * core. Note that the function does *not* free the crtc structure itself,
716 * this is the responsibility of the caller.
718 void drm_crtc_cleanup(struct drm_crtc *crtc)
720 struct drm_device *dev = crtc->dev;
722 kfree(crtc->gamma_store);
723 crtc->gamma_store = NULL;
725 drm_modeset_lock_fini(&crtc->mutex);
727 drm_mode_object_unregister(dev, &crtc->base);
728 list_del(&crtc->head);
729 dev->mode_config.num_crtc--;
731 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
732 if (crtc->state && crtc->funcs->atomic_destroy_state)
733 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
737 memset(crtc, 0, sizeof(*crtc));
739 EXPORT_SYMBOL(drm_crtc_cleanup);
742 * drm_crtc_index - find the index of a registered CRTC
743 * @crtc: CRTC to find index for
745 * Given a registered CRTC, return the index of that CRTC within a DRM
746 * device's list of CRTCs.
748 unsigned int drm_crtc_index(struct drm_crtc *crtc)
750 unsigned int index = 0;
751 struct drm_crtc *tmp;
753 drm_for_each_crtc(tmp, crtc->dev) {
762 EXPORT_SYMBOL(drm_crtc_index);
765 * drm_mode_remove - remove and free a mode
766 * @connector: connector list to modify
767 * @mode: mode to remove
769 * Remove @mode from @connector's mode list, then free it.
771 static void drm_mode_remove(struct drm_connector *connector,
772 struct drm_display_mode *mode)
774 list_del(&mode->head);
775 drm_mode_destroy(connector->dev, mode);
779 * drm_display_info_set_bus_formats - set the supported bus formats
780 * @info: display info to store bus formats in
781 * @formats: array containing the supported bus formats
782 * @num_formats: the number of entries in the fmts array
784 * Store the supported bus formats in display info structure.
785 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
786 * a full list of available formats.
788 int drm_display_info_set_bus_formats(struct drm_display_info *info,
790 unsigned int num_formats)
794 if (!formats && num_formats)
797 if (formats && num_formats) {
798 fmts = kmemdup(formats, sizeof(*formats) * num_formats,
804 kfree(info->bus_formats);
805 info->bus_formats = fmts;
806 info->num_bus_formats = num_formats;
810 EXPORT_SYMBOL(drm_display_info_set_bus_formats);
813 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
814 * @connector: connector to quwery
816 * The kernel supports per-connector configration of its consoles through
817 * use of the video= parameter. This function parses that option and
818 * extracts the user's specified mode (or enable/disable status) for a
819 * particular connector. This is typically only used during the early fbdev
822 static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
824 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
827 if (fb_get_options(connector->name, &option))
830 if (!drm_mode_parse_command_line_for_connector(option,
838 switch (mode->force) {
842 case DRM_FORCE_ON_DIGITAL:
851 DRM_INFO("forcing %s connector %s\n", connector->name, s);
852 connector->force = mode->force;
855 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
857 mode->xres, mode->yres,
858 mode->refresh_specified ? mode->refresh : 60,
859 mode->rb ? " reduced blanking" : "",
860 mode->margins ? " with margins" : "",
861 mode->interlace ? " interlaced" : "");
865 * drm_connector_init - Init a preallocated connector
867 * @connector: the connector to init
868 * @funcs: callbacks for this connector
869 * @connector_type: user visible type of the connector
871 * Initialises a preallocated connector. Connectors should be
872 * subclassed as part of driver connector objects.
875 * Zero on success, error code on failure.
877 int drm_connector_init(struct drm_device *dev,
878 struct drm_connector *connector,
879 const struct drm_connector_funcs *funcs,
882 struct drm_mode_config *config = &dev->mode_config;
884 struct ida *connector_ida =
885 &drm_connector_enum_list[connector_type].ida;
887 drm_modeset_lock_all(dev);
889 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false, NULL);
893 connector->base.properties = &connector->properties;
894 connector->dev = dev;
895 connector->funcs = funcs;
897 connector->connector_id = ida_simple_get(&config->connector_ida, 0, 0, GFP_KERNEL);
898 if (connector->connector_id < 0) {
899 ret = connector->connector_id;
903 connector->connector_type = connector_type;
904 connector->connector_type_id =
905 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
906 if (connector->connector_type_id < 0) {
907 ret = connector->connector_type_id;
911 kasprintf(GFP_KERNEL, "%s-%d",
912 drm_connector_enum_list[connector_type].name,
913 connector->connector_type_id);
914 if (!connector->name) {
916 goto out_put_type_id;
919 INIT_LIST_HEAD(&connector->probed_modes);
920 INIT_LIST_HEAD(&connector->modes);
921 connector->edid_blob_ptr = NULL;
922 connector->status = connector_status_unknown;
924 drm_connector_get_cmdline_mode(connector);
926 /* We should add connectors at the end to avoid upsetting the connector
928 list_add_tail(&connector->head, &config->connector_list);
929 config->num_connector++;
931 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
932 drm_object_attach_property(&connector->base,
933 config->edid_property,
936 drm_object_attach_property(&connector->base,
937 config->dpms_property, 0);
939 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
940 drm_object_attach_property(&connector->base, config->prop_crtc_id, 0);
943 connector->debugfs_entry = NULL;
946 ida_remove(connector_ida, connector->connector_type_id);
949 ida_remove(&config->connector_ida, connector->connector_id);
952 drm_mode_object_unregister(dev, &connector->base);
955 drm_modeset_unlock_all(dev);
959 EXPORT_SYMBOL(drm_connector_init);
962 * drm_connector_cleanup - cleans up an initialised connector
963 * @connector: connector to cleanup
965 * Cleans up the connector but doesn't free the object.
967 void drm_connector_cleanup(struct drm_connector *connector)
969 struct drm_device *dev = connector->dev;
970 struct drm_display_mode *mode, *t;
972 if (connector->tile_group) {
973 drm_mode_put_tile_group(dev, connector->tile_group);
974 connector->tile_group = NULL;
977 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
978 drm_mode_remove(connector, mode);
980 list_for_each_entry_safe(mode, t, &connector->modes, head)
981 drm_mode_remove(connector, mode);
983 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
984 connector->connector_type_id);
986 ida_remove(&dev->mode_config.connector_ida,
987 connector->connector_id);
989 kfree(connector->display_info.bus_formats);
990 drm_mode_object_unregister(dev, &connector->base);
991 kfree(connector->name);
992 connector->name = NULL;
993 list_del(&connector->head);
994 dev->mode_config.num_connector--;
996 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
997 if (connector->state && connector->funcs->atomic_destroy_state)
998 connector->funcs->atomic_destroy_state(connector,
1001 memset(connector, 0, sizeof(*connector));
1003 EXPORT_SYMBOL(drm_connector_cleanup);
1006 * drm_connector_register - register a connector
1007 * @connector: the connector to register
1009 * Register userspace interfaces for a connector
1012 * Zero on success, error code on failure.
1014 int drm_connector_register(struct drm_connector *connector)
1018 drm_mode_object_register(connector->dev, &connector->base);
1020 ret = drm_sysfs_connector_add(connector);
1024 ret = drm_debugfs_connector_add(connector);
1026 drm_sysfs_connector_remove(connector);
1032 EXPORT_SYMBOL(drm_connector_register);
1035 * drm_connector_unregister - unregister a connector
1036 * @connector: the connector to unregister
1038 * Unregister userspace interfaces for a connector
1040 void drm_connector_unregister(struct drm_connector *connector)
1042 drm_sysfs_connector_remove(connector);
1043 drm_debugfs_connector_remove(connector);
1045 EXPORT_SYMBOL(drm_connector_unregister);
1048 * drm_connector_register_all - register all connectors
1051 * This function registers all connectors in sysfs and other places so that
1052 * userspace can start to access them. Drivers can call it after calling
1053 * drm_dev_register() to complete the device registration, if they don't call
1054 * drm_connector_register() on each connector individually.
1056 * When a device is unplugged and should be removed from userspace access,
1057 * call drm_connector_unregister_all(), which is the inverse of this
1061 * Zero on success, error code on failure.
1063 int drm_connector_register_all(struct drm_device *dev)
1065 struct drm_connector *connector;
1068 mutex_lock(&dev->mode_config.mutex);
1070 drm_for_each_connector(connector, dev) {
1071 ret = drm_connector_register(connector);
1076 mutex_unlock(&dev->mode_config.mutex);
1081 mutex_unlock(&dev->mode_config.mutex);
1082 drm_connector_unregister_all(dev);
1085 EXPORT_SYMBOL(drm_connector_register_all);
1088 * drm_connector_unregister_all - unregister connector userspace interfaces
1091 * This functions unregisters all connectors from sysfs and other places so
1092 * that userspace can no longer access them. Drivers should call this as the
1093 * first step tearing down the device instace, or when the underlying
1094 * physical device disappeared (e.g. USB unplug), right before calling
1095 * drm_dev_unregister().
1097 void drm_connector_unregister_all(struct drm_device *dev)
1099 struct drm_connector *connector;
1101 /* FIXME: taking the mode config mutex ends up in a clash with sysfs */
1102 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1103 drm_connector_unregister(connector);
1105 EXPORT_SYMBOL(drm_connector_unregister_all);
1108 * drm_encoder_init - Init a preallocated encoder
1110 * @encoder: the encoder to init
1111 * @funcs: callbacks for this encoder
1112 * @encoder_type: user visible type of the encoder
1113 * @name: printf style format string for the encoder name, or NULL for default name
1115 * Initialises a preallocated encoder. Encoder should be
1116 * subclassed as part of driver encoder objects.
1119 * Zero on success, error code on failure.
1121 int drm_encoder_init(struct drm_device *dev,
1122 struct drm_encoder *encoder,
1123 const struct drm_encoder_funcs *funcs,
1124 int encoder_type, const char *name, ...)
1128 drm_modeset_lock_all(dev);
1130 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1135 encoder->encoder_type = encoder_type;
1136 encoder->funcs = funcs;
1141 encoder->name = kvasprintf(GFP_KERNEL, name, ap);
1144 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1145 drm_encoder_enum_list[encoder_type].name,
1148 if (!encoder->name) {
1153 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1154 dev->mode_config.num_encoder++;
1158 drm_mode_object_unregister(dev, &encoder->base);
1161 drm_modeset_unlock_all(dev);
1165 EXPORT_SYMBOL(drm_encoder_init);
1168 * drm_encoder_index - find the index of a registered encoder
1169 * @encoder: encoder to find index for
1171 * Given a registered encoder, return the index of that encoder within a DRM
1172 * device's list of encoders.
1174 unsigned int drm_encoder_index(struct drm_encoder *encoder)
1176 unsigned int index = 0;
1177 struct drm_encoder *tmp;
1179 drm_for_each_encoder(tmp, encoder->dev) {
1188 EXPORT_SYMBOL(drm_encoder_index);
1191 * drm_encoder_cleanup - cleans up an initialised encoder
1192 * @encoder: encoder to cleanup
1194 * Cleans up the encoder but doesn't free the object.
1196 void drm_encoder_cleanup(struct drm_encoder *encoder)
1198 struct drm_device *dev = encoder->dev;
1200 drm_modeset_lock_all(dev);
1201 drm_mode_object_unregister(dev, &encoder->base);
1202 kfree(encoder->name);
1203 list_del(&encoder->head);
1204 dev->mode_config.num_encoder--;
1205 drm_modeset_unlock_all(dev);
1207 memset(encoder, 0, sizeof(*encoder));
1209 EXPORT_SYMBOL(drm_encoder_cleanup);
1211 static unsigned int drm_num_planes(struct drm_device *dev)
1213 unsigned int num = 0;
1214 struct drm_plane *tmp;
1216 drm_for_each_plane(tmp, dev) {
1224 * drm_universal_plane_init - Initialize a new universal plane object
1226 * @plane: plane object to init
1227 * @possible_crtcs: bitmask of possible CRTCs
1228 * @funcs: callbacks for the new plane
1229 * @formats: array of supported formats (%DRM_FORMAT_*)
1230 * @format_count: number of elements in @formats
1231 * @type: type of plane (overlay, primary, cursor)
1232 * @name: printf style format string for the plane name, or NULL for default name
1234 * Initializes a plane object of type @type.
1237 * Zero on success, error code on failure.
1239 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1240 unsigned long possible_crtcs,
1241 const struct drm_plane_funcs *funcs,
1242 const uint32_t *formats, unsigned int format_count,
1243 enum drm_plane_type type,
1244 const char *name, ...)
1246 struct drm_mode_config *config = &dev->mode_config;
1249 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1253 drm_modeset_lock_init(&plane->mutex);
1255 plane->base.properties = &plane->properties;
1257 plane->funcs = funcs;
1258 plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
1260 if (!plane->format_types) {
1261 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1262 drm_mode_object_unregister(dev, &plane->base);
1270 plane->name = kvasprintf(GFP_KERNEL, name, ap);
1273 plane->name = kasprintf(GFP_KERNEL, "plane-%d",
1274 drm_num_planes(dev));
1277 kfree(plane->format_types);
1278 drm_mode_object_unregister(dev, &plane->base);
1282 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1283 plane->format_count = format_count;
1284 plane->possible_crtcs = possible_crtcs;
1287 list_add_tail(&plane->head, &config->plane_list);
1288 config->num_total_plane++;
1289 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1290 config->num_overlay_plane++;
1292 drm_object_attach_property(&plane->base,
1293 config->plane_type_property,
1296 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
1297 drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
1298 drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
1299 drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
1300 drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
1301 drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
1302 drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
1303 drm_object_attach_property(&plane->base, config->prop_src_x, 0);
1304 drm_object_attach_property(&plane->base, config->prop_src_y, 0);
1305 drm_object_attach_property(&plane->base, config->prop_src_w, 0);
1306 drm_object_attach_property(&plane->base, config->prop_src_h, 0);
1311 EXPORT_SYMBOL(drm_universal_plane_init);
1314 * drm_plane_init - Initialize a legacy plane
1316 * @plane: plane object to init
1317 * @possible_crtcs: bitmask of possible CRTCs
1318 * @funcs: callbacks for the new plane
1319 * @formats: array of supported formats (%DRM_FORMAT_*)
1320 * @format_count: number of elements in @formats
1321 * @is_primary: plane type (primary vs overlay)
1323 * Legacy API to initialize a DRM plane.
1325 * New drivers should call drm_universal_plane_init() instead.
1328 * Zero on success, error code on failure.
1330 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1331 unsigned long possible_crtcs,
1332 const struct drm_plane_funcs *funcs,
1333 const uint32_t *formats, unsigned int format_count,
1336 enum drm_plane_type type;
1338 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1339 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1340 formats, format_count, type, NULL);
1342 EXPORT_SYMBOL(drm_plane_init);
1345 * drm_plane_cleanup - Clean up the core plane usage
1346 * @plane: plane to cleanup
1348 * This function cleans up @plane and removes it from the DRM mode setting
1349 * core. Note that the function does *not* free the plane structure itself,
1350 * this is the responsibility of the caller.
1352 void drm_plane_cleanup(struct drm_plane *plane)
1354 struct drm_device *dev = plane->dev;
1356 drm_modeset_lock_all(dev);
1357 kfree(plane->format_types);
1358 drm_mode_object_unregister(dev, &plane->base);
1360 BUG_ON(list_empty(&plane->head));
1362 list_del(&plane->head);
1363 dev->mode_config.num_total_plane--;
1364 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1365 dev->mode_config.num_overlay_plane--;
1366 drm_modeset_unlock_all(dev);
1368 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1369 if (plane->state && plane->funcs->atomic_destroy_state)
1370 plane->funcs->atomic_destroy_state(plane, plane->state);
1374 memset(plane, 0, sizeof(*plane));
1376 EXPORT_SYMBOL(drm_plane_cleanup);
1379 * drm_plane_index - find the index of a registered plane
1380 * @plane: plane to find index for
1382 * Given a registered plane, return the index of that CRTC within a DRM
1383 * device's list of planes.
1385 unsigned int drm_plane_index(struct drm_plane *plane)
1387 unsigned int index = 0;
1388 struct drm_plane *tmp;
1390 drm_for_each_plane(tmp, plane->dev) {
1399 EXPORT_SYMBOL(drm_plane_index);
1402 * drm_plane_from_index - find the registered plane at an index
1404 * @idx: index of registered plane to find for
1406 * Given a plane index, return the registered plane from DRM device's
1407 * list of planes with matching index.
1410 drm_plane_from_index(struct drm_device *dev, int idx)
1412 struct drm_plane *plane;
1415 drm_for_each_plane(plane, dev) {
1422 EXPORT_SYMBOL(drm_plane_from_index);
1425 * drm_plane_force_disable - Forcibly disable a plane
1426 * @plane: plane to disable
1428 * Forces the plane to be disabled.
1430 * Used when the plane's current framebuffer is destroyed,
1431 * and when restoring fbdev mode.
1433 void drm_plane_force_disable(struct drm_plane *plane)
1440 plane->old_fb = plane->fb;
1441 ret = plane->funcs->disable_plane(plane);
1443 DRM_ERROR("failed to disable plane with busy fb\n");
1444 plane->old_fb = NULL;
1447 /* disconnect the plane from the fb and crtc: */
1448 drm_framebuffer_unreference(plane->old_fb);
1449 plane->old_fb = NULL;
1453 EXPORT_SYMBOL(drm_plane_force_disable);
1455 static int drm_mode_create_standard_properties(struct drm_device *dev)
1457 struct drm_property *prop;
1460 * Standard properties (apply to all connectors)
1462 prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1463 DRM_MODE_PROP_IMMUTABLE,
1467 dev->mode_config.edid_property = prop;
1469 prop = drm_property_create_enum(dev, 0,
1470 "DPMS", drm_dpms_enum_list,
1471 ARRAY_SIZE(drm_dpms_enum_list));
1474 dev->mode_config.dpms_property = prop;
1476 prop = drm_property_create(dev,
1477 DRM_MODE_PROP_BLOB |
1478 DRM_MODE_PROP_IMMUTABLE,
1482 dev->mode_config.path_property = prop;
1484 prop = drm_property_create(dev,
1485 DRM_MODE_PROP_BLOB |
1486 DRM_MODE_PROP_IMMUTABLE,
1490 dev->mode_config.tile_property = prop;
1492 prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1493 "type", drm_plane_type_enum_list,
1494 ARRAY_SIZE(drm_plane_type_enum_list));
1497 dev->mode_config.plane_type_property = prop;
1499 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1500 "SRC_X", 0, UINT_MAX);
1503 dev->mode_config.prop_src_x = prop;
1505 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1506 "SRC_Y", 0, UINT_MAX);
1509 dev->mode_config.prop_src_y = prop;
1511 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1512 "SRC_W", 0, UINT_MAX);
1515 dev->mode_config.prop_src_w = prop;
1517 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1518 "SRC_H", 0, UINT_MAX);
1521 dev->mode_config.prop_src_h = prop;
1523 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1524 "CRTC_X", INT_MIN, INT_MAX);
1527 dev->mode_config.prop_crtc_x = prop;
1529 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1530 "CRTC_Y", INT_MIN, INT_MAX);
1533 dev->mode_config.prop_crtc_y = prop;
1535 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1536 "CRTC_W", 0, INT_MAX);
1539 dev->mode_config.prop_crtc_w = prop;
1541 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1542 "CRTC_H", 0, INT_MAX);
1545 dev->mode_config.prop_crtc_h = prop;
1547 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1548 "FB_ID", DRM_MODE_OBJECT_FB);
1551 dev->mode_config.prop_fb_id = prop;
1553 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1554 "CRTC_ID", DRM_MODE_OBJECT_CRTC);
1557 dev->mode_config.prop_crtc_id = prop;
1559 prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
1563 dev->mode_config.prop_active = prop;
1565 prop = drm_property_create(dev,
1566 DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB,
1570 dev->mode_config.prop_mode_id = prop;
1572 prop = drm_property_create(dev,
1577 dev->mode_config.degamma_lut_property = prop;
1579 prop = drm_property_create_range(dev,
1580 DRM_MODE_PROP_IMMUTABLE,
1581 "DEGAMMA_LUT_SIZE", 0, UINT_MAX);
1584 dev->mode_config.degamma_lut_size_property = prop;
1586 prop = drm_property_create(dev,
1591 dev->mode_config.ctm_property = prop;
1593 prop = drm_property_create(dev,
1598 dev->mode_config.gamma_lut_property = prop;
1600 prop = drm_property_create_range(dev,
1601 DRM_MODE_PROP_IMMUTABLE,
1602 "GAMMA_LUT_SIZE", 0, UINT_MAX);
1605 dev->mode_config.gamma_lut_size_property = prop;
1611 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1614 * Called by a driver the first time a DVI-I connector is made.
1616 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1618 struct drm_property *dvi_i_selector;
1619 struct drm_property *dvi_i_subconnector;
1621 if (dev->mode_config.dvi_i_select_subconnector_property)
1625 drm_property_create_enum(dev, 0,
1626 "select subconnector",
1627 drm_dvi_i_select_enum_list,
1628 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1629 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1631 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1633 drm_dvi_i_subconnector_enum_list,
1634 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1635 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1639 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1642 * drm_create_tv_properties - create TV specific connector properties
1644 * @num_modes: number of different TV formats (modes) supported
1645 * @modes: array of pointers to strings containing name of each format
1647 * Called by a driver's TV initialization routine, this function creates
1648 * the TV specific connector properties for a given device. Caller is
1649 * responsible for allocating a list of format names and passing them to
1652 int drm_mode_create_tv_properties(struct drm_device *dev,
1653 unsigned int num_modes,
1654 const char * const modes[])
1656 struct drm_property *tv_selector;
1657 struct drm_property *tv_subconnector;
1660 if (dev->mode_config.tv_select_subconnector_property)
1664 * Basic connector properties
1666 tv_selector = drm_property_create_enum(dev, 0,
1667 "select subconnector",
1668 drm_tv_select_enum_list,
1669 ARRAY_SIZE(drm_tv_select_enum_list));
1673 dev->mode_config.tv_select_subconnector_property = tv_selector;
1676 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1678 drm_tv_subconnector_enum_list,
1679 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1680 if (!tv_subconnector)
1682 dev->mode_config.tv_subconnector_property = tv_subconnector;
1685 * Other, TV specific properties: margins & TV modes.
1687 dev->mode_config.tv_left_margin_property =
1688 drm_property_create_range(dev, 0, "left margin", 0, 100);
1689 if (!dev->mode_config.tv_left_margin_property)
1692 dev->mode_config.tv_right_margin_property =
1693 drm_property_create_range(dev, 0, "right margin", 0, 100);
1694 if (!dev->mode_config.tv_right_margin_property)
1697 dev->mode_config.tv_top_margin_property =
1698 drm_property_create_range(dev, 0, "top margin", 0, 100);
1699 if (!dev->mode_config.tv_top_margin_property)
1702 dev->mode_config.tv_bottom_margin_property =
1703 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1704 if (!dev->mode_config.tv_bottom_margin_property)
1707 dev->mode_config.tv_mode_property =
1708 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1710 if (!dev->mode_config.tv_mode_property)
1713 for (i = 0; i < num_modes; i++)
1714 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1717 dev->mode_config.tv_brightness_property =
1718 drm_property_create_range(dev, 0, "brightness", 0, 100);
1719 if (!dev->mode_config.tv_brightness_property)
1722 dev->mode_config.tv_contrast_property =
1723 drm_property_create_range(dev, 0, "contrast", 0, 100);
1724 if (!dev->mode_config.tv_contrast_property)
1727 dev->mode_config.tv_flicker_reduction_property =
1728 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1729 if (!dev->mode_config.tv_flicker_reduction_property)
1732 dev->mode_config.tv_overscan_property =
1733 drm_property_create_range(dev, 0, "overscan", 0, 100);
1734 if (!dev->mode_config.tv_overscan_property)
1737 dev->mode_config.tv_saturation_property =
1738 drm_property_create_range(dev, 0, "saturation", 0, 100);
1739 if (!dev->mode_config.tv_saturation_property)
1742 dev->mode_config.tv_hue_property =
1743 drm_property_create_range(dev, 0, "hue", 0, 100);
1744 if (!dev->mode_config.tv_hue_property)
1751 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1754 * drm_mode_create_scaling_mode_property - create scaling mode property
1757 * Called by a driver the first time it's needed, must be attached to desired
1760 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1762 struct drm_property *scaling_mode;
1764 if (dev->mode_config.scaling_mode_property)
1768 drm_property_create_enum(dev, 0, "scaling mode",
1769 drm_scaling_mode_enum_list,
1770 ARRAY_SIZE(drm_scaling_mode_enum_list));
1772 dev->mode_config.scaling_mode_property = scaling_mode;
1776 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1779 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1782 * Called by a driver the first time it's needed, must be attached to desired
1786 * Zero on success, negative errno on failure.
1788 int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1790 if (dev->mode_config.aspect_ratio_property)
1793 dev->mode_config.aspect_ratio_property =
1794 drm_property_create_enum(dev, 0, "aspect ratio",
1795 drm_aspect_ratio_enum_list,
1796 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1798 if (dev->mode_config.aspect_ratio_property == NULL)
1803 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1806 * drm_mode_create_dirty_property - create dirty property
1809 * Called by a driver the first time it's needed, must be attached to desired
1812 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1814 struct drm_property *dirty_info;
1816 if (dev->mode_config.dirty_info_property)
1820 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1822 drm_dirty_info_enum_list,
1823 ARRAY_SIZE(drm_dirty_info_enum_list));
1824 dev->mode_config.dirty_info_property = dirty_info;
1828 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1831 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1834 * Create the the suggested x/y offset property for connectors.
1836 int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1838 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1841 dev->mode_config.suggested_x_property =
1842 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1844 dev->mode_config.suggested_y_property =
1845 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1847 if (dev->mode_config.suggested_x_property == NULL ||
1848 dev->mode_config.suggested_y_property == NULL)
1852 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1855 * drm_mode_getresources - get graphics configuration
1856 * @dev: drm device for the ioctl
1857 * @data: data pointer for the ioctl
1858 * @file_priv: drm file for the ioctl call
1860 * Construct a set of configuration description structures and return
1861 * them to the user, including CRTC, connector and framebuffer configuration.
1863 * Called by the user via ioctl.
1866 * Zero on success, negative errno on failure.
1868 int drm_mode_getresources(struct drm_device *dev, void *data,
1869 struct drm_file *file_priv)
1871 struct drm_mode_card_res *card_res = data;
1872 struct list_head *lh;
1873 struct drm_framebuffer *fb;
1874 struct drm_connector *connector;
1875 struct drm_crtc *crtc;
1876 struct drm_encoder *encoder;
1878 int connector_count = 0;
1881 int encoder_count = 0;
1883 uint32_t __user *fb_id;
1884 uint32_t __user *crtc_id;
1885 uint32_t __user *connector_id;
1886 uint32_t __user *encoder_id;
1888 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1892 mutex_lock(&file_priv->fbs_lock);
1894 * For the non-control nodes we need to limit the list of resources
1895 * by IDs in the group list for this node
1897 list_for_each(lh, &file_priv->fbs)
1900 /* handle this in 4 parts */
1902 if (card_res->count_fbs >= fb_count) {
1904 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1905 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1906 if (put_user(fb->base.id, fb_id + copied)) {
1907 mutex_unlock(&file_priv->fbs_lock);
1913 card_res->count_fbs = fb_count;
1914 mutex_unlock(&file_priv->fbs_lock);
1916 /* mode_config.mutex protects the connector list against e.g. DP MST
1917 * connector hot-adding. CRTC/Plane lists are invariant. */
1918 mutex_lock(&dev->mode_config.mutex);
1919 drm_for_each_crtc(crtc, dev)
1922 drm_for_each_connector(connector, dev)
1925 drm_for_each_encoder(encoder, dev)
1928 card_res->max_height = dev->mode_config.max_height;
1929 card_res->min_height = dev->mode_config.min_height;
1930 card_res->max_width = dev->mode_config.max_width;
1931 card_res->min_width = dev->mode_config.min_width;
1934 if (card_res->count_crtcs >= crtc_count) {
1936 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1937 drm_for_each_crtc(crtc, dev) {
1938 DRM_DEBUG_KMS("[CRTC:%d:%s]\n",
1939 crtc->base.id, crtc->name);
1940 if (put_user(crtc->base.id, crtc_id + copied)) {
1947 card_res->count_crtcs = crtc_count;
1950 if (card_res->count_encoders >= encoder_count) {
1952 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1953 drm_for_each_encoder(encoder, dev) {
1954 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1956 if (put_user(encoder->base.id, encoder_id +
1964 card_res->count_encoders = encoder_count;
1967 if (card_res->count_connectors >= connector_count) {
1969 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1970 drm_for_each_connector(connector, dev) {
1971 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1974 if (put_user(connector->base.id,
1975 connector_id + copied)) {
1982 card_res->count_connectors = connector_count;
1984 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1985 card_res->count_connectors, card_res->count_encoders);
1988 mutex_unlock(&dev->mode_config.mutex);
1993 * drm_mode_getcrtc - get CRTC configuration
1994 * @dev: drm device for the ioctl
1995 * @data: data pointer for the ioctl
1996 * @file_priv: drm file for the ioctl call
1998 * Construct a CRTC configuration structure to return to the user.
2000 * Called by the user via ioctl.
2003 * Zero on success, negative errno on failure.
2005 int drm_mode_getcrtc(struct drm_device *dev,
2006 void *data, struct drm_file *file_priv)
2008 struct drm_mode_crtc *crtc_resp = data;
2009 struct drm_crtc *crtc;
2011 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2014 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
2018 drm_modeset_lock_crtc(crtc, crtc->primary);
2019 crtc_resp->gamma_size = crtc->gamma_size;
2020 if (crtc->primary->fb)
2021 crtc_resp->fb_id = crtc->primary->fb->base.id;
2023 crtc_resp->fb_id = 0;
2026 crtc_resp->x = crtc->primary->state->src_x >> 16;
2027 crtc_resp->y = crtc->primary->state->src_y >> 16;
2028 if (crtc->state->enable) {
2029 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode);
2030 crtc_resp->mode_valid = 1;
2033 crtc_resp->mode_valid = 0;
2036 crtc_resp->x = crtc->x;
2037 crtc_resp->y = crtc->y;
2038 if (crtc->enabled) {
2039 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode);
2040 crtc_resp->mode_valid = 1;
2043 crtc_resp->mode_valid = 0;
2046 drm_modeset_unlock_crtc(crtc);
2051 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
2052 const struct drm_file *file_priv)
2055 * If user-space hasn't configured the driver to expose the stereo 3D
2056 * modes, don't expose them.
2058 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
2064 static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
2066 /* For atomic drivers only state objects are synchronously updated and
2067 * protected by modeset locks, so check those first. */
2068 if (connector->state)
2069 return connector->state->best_encoder;
2070 return connector->encoder;
2073 /* helper for getconnector and getproperties ioctls */
2074 static int get_properties(struct drm_mode_object *obj, bool atomic,
2075 uint32_t __user *prop_ptr, uint64_t __user *prop_values,
2076 uint32_t *arg_count_props)
2081 props_count = obj->properties->count;
2083 props_count -= obj->properties->atomic_count;
2085 if ((*arg_count_props >= props_count) && props_count) {
2086 for (i = 0, copied = 0; copied < props_count; i++) {
2087 struct drm_property *prop = obj->properties->properties[i];
2090 if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
2093 ret = drm_object_property_get_value(obj, prop, &val);
2097 if (put_user(prop->base.id, prop_ptr + copied))
2100 if (put_user(val, prop_values + copied))
2106 *arg_count_props = props_count;
2112 * drm_mode_getconnector - get connector configuration
2113 * @dev: drm device for the ioctl
2114 * @data: data pointer for the ioctl
2115 * @file_priv: drm file for the ioctl call
2117 * Construct a connector configuration structure to return to the user.
2119 * Called by the user via ioctl.
2122 * Zero on success, negative errno on failure.
2124 int drm_mode_getconnector(struct drm_device *dev, void *data,
2125 struct drm_file *file_priv)
2127 struct drm_mode_get_connector *out_resp = data;
2128 struct drm_connector *connector;
2129 struct drm_encoder *encoder;
2130 struct drm_display_mode *mode;
2132 int encoders_count = 0;
2136 struct drm_mode_modeinfo u_mode;
2137 struct drm_mode_modeinfo __user *mode_ptr;
2138 uint32_t __user *encoder_ptr;
2140 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2143 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
2145 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
2147 mutex_lock(&dev->mode_config.mutex);
2149 connector = drm_connector_find(dev, out_resp->connector_id);
2155 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
2156 if (connector->encoder_ids[i] != 0)
2159 if (out_resp->count_modes == 0) {
2160 connector->funcs->fill_modes(connector,
2161 dev->mode_config.max_width,
2162 dev->mode_config.max_height);
2165 /* delayed so we get modes regardless of pre-fill_modes state */
2166 list_for_each_entry(mode, &connector->modes, head)
2167 if (drm_mode_expose_to_userspace(mode, file_priv))
2170 out_resp->connector_id = connector->base.id;
2171 out_resp->connector_type = connector->connector_type;
2172 out_resp->connector_type_id = connector->connector_type_id;
2173 out_resp->mm_width = connector->display_info.width_mm;
2174 out_resp->mm_height = connector->display_info.height_mm;
2175 out_resp->subpixel = connector->display_info.subpixel_order;
2176 out_resp->connection = connector->status;
2178 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2179 encoder = drm_connector_get_encoder(connector);
2181 out_resp->encoder_id = encoder->base.id;
2183 out_resp->encoder_id = 0;
2186 * This ioctl is called twice, once to determine how much space is
2187 * needed, and the 2nd time to fill it.
2189 if ((out_resp->count_modes >= mode_count) && mode_count) {
2191 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
2192 list_for_each_entry(mode, &connector->modes, head) {
2193 if (!drm_mode_expose_to_userspace(mode, file_priv))
2196 drm_mode_convert_to_umode(&u_mode, mode);
2197 if (copy_to_user(mode_ptr + copied,
2198 &u_mode, sizeof(u_mode))) {
2205 out_resp->count_modes = mode_count;
2207 ret = get_properties(&connector->base, file_priv->atomic,
2208 (uint32_t __user *)(unsigned long)(out_resp->props_ptr),
2209 (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr),
2210 &out_resp->count_props);
2214 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2216 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
2217 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2218 if (connector->encoder_ids[i] != 0) {
2219 if (put_user(connector->encoder_ids[i],
2220 encoder_ptr + copied)) {
2228 out_resp->count_encoders = encoders_count;
2231 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2234 mutex_unlock(&dev->mode_config.mutex);
2239 static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2241 struct drm_connector *connector;
2242 struct drm_device *dev = encoder->dev;
2243 bool uses_atomic = false;
2245 /* For atomic drivers only state objects are synchronously updated and
2246 * protected by modeset locks, so check those first. */
2247 drm_for_each_connector(connector, dev) {
2248 if (!connector->state)
2253 if (connector->state->best_encoder != encoder)
2256 return connector->state->crtc;
2259 /* Don't return stale data (e.g. pending async disable). */
2263 return encoder->crtc;
2267 * drm_mode_getencoder - get encoder configuration
2268 * @dev: drm device for the ioctl
2269 * @data: data pointer for the ioctl
2270 * @file_priv: drm file for the ioctl call
2272 * Construct a encoder configuration structure to return to the user.
2274 * Called by the user via ioctl.
2277 * Zero on success, negative errno on failure.
2279 int drm_mode_getencoder(struct drm_device *dev, void *data,
2280 struct drm_file *file_priv)
2282 struct drm_mode_get_encoder *enc_resp = data;
2283 struct drm_encoder *encoder;
2284 struct drm_crtc *crtc;
2286 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2289 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
2293 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2294 crtc = drm_encoder_get_crtc(encoder);
2296 enc_resp->crtc_id = crtc->base.id;
2298 enc_resp->crtc_id = 0;
2299 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2301 enc_resp->encoder_type = encoder->encoder_type;
2302 enc_resp->encoder_id = encoder->base.id;
2303 enc_resp->possible_crtcs = encoder->possible_crtcs;
2304 enc_resp->possible_clones = encoder->possible_clones;
2310 * drm_mode_getplane_res - enumerate all plane resources
2313 * @file_priv: DRM file info
2315 * Construct a list of plane ids to return to the user.
2317 * Called by the user via ioctl.
2320 * Zero on success, negative errno on failure.
2322 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2323 struct drm_file *file_priv)
2325 struct drm_mode_get_plane_res *plane_resp = data;
2326 struct drm_mode_config *config;
2327 struct drm_plane *plane;
2328 uint32_t __user *plane_ptr;
2330 unsigned num_planes;
2332 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2335 config = &dev->mode_config;
2337 if (file_priv->universal_planes)
2338 num_planes = config->num_total_plane;
2340 num_planes = config->num_overlay_plane;
2343 * This ioctl is called twice, once to determine how much space is
2344 * needed, and the 2nd time to fill it.
2347 (plane_resp->count_planes >= num_planes)) {
2348 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2350 /* Plane lists are invariant, no locking needed. */
2351 drm_for_each_plane(plane, dev) {
2353 * Unless userspace set the 'universal planes'
2354 * capability bit, only advertise overlays.
2356 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2357 !file_priv->universal_planes)
2360 if (put_user(plane->base.id, plane_ptr + copied))
2365 plane_resp->count_planes = num_planes;
2371 * drm_mode_getplane - get plane configuration
2374 * @file_priv: DRM file info
2376 * Construct a plane configuration structure to return to the user.
2378 * Called by the user via ioctl.
2381 * Zero on success, negative errno on failure.
2383 int drm_mode_getplane(struct drm_device *dev, void *data,
2384 struct drm_file *file_priv)
2386 struct drm_mode_get_plane *plane_resp = data;
2387 struct drm_plane *plane;
2388 uint32_t __user *format_ptr;
2390 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2393 plane = drm_plane_find(dev, plane_resp->plane_id);
2397 drm_modeset_lock(&plane->mutex, NULL);
2399 plane_resp->crtc_id = plane->crtc->base.id;
2401 plane_resp->crtc_id = 0;
2404 plane_resp->fb_id = plane->fb->base.id;
2406 plane_resp->fb_id = 0;
2407 drm_modeset_unlock(&plane->mutex);
2409 plane_resp->plane_id = plane->base.id;
2410 plane_resp->possible_crtcs = plane->possible_crtcs;
2411 plane_resp->gamma_size = 0;
2414 * This ioctl is called twice, once to determine how much space is
2415 * needed, and the 2nd time to fill it.
2417 if (plane->format_count &&
2418 (plane_resp->count_format_types >= plane->format_count)) {
2419 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2420 if (copy_to_user(format_ptr,
2421 plane->format_types,
2422 sizeof(uint32_t) * plane->format_count)) {
2426 plane_resp->count_format_types = plane->format_count;
2432 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2433 * @plane: plane to check for format support
2434 * @format: the pixel format
2437 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2440 int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format)
2444 for (i = 0; i < plane->format_count; i++) {
2445 if (format == plane->format_types[i])
2452 static int check_src_coords(uint32_t src_x, uint32_t src_y,
2453 uint32_t src_w, uint32_t src_h,
2454 const struct drm_framebuffer *fb)
2456 unsigned int fb_width, fb_height;
2458 fb_width = fb->width << 16;
2459 fb_height = fb->height << 16;
2461 /* Make sure source coordinates are inside the fb. */
2462 if (src_w > fb_width ||
2463 src_x > fb_width - src_w ||
2464 src_h > fb_height ||
2465 src_y > fb_height - src_h) {
2466 DRM_DEBUG_KMS("Invalid source coordinates "
2467 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2468 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2469 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2470 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2471 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2479 * setplane_internal - setplane handler for internal callers
2481 * Note that we assume an extra reference has already been taken on fb. If the
2482 * update fails, this reference will be dropped before return; if it succeeds,
2483 * the previous framebuffer (if any) will be unreferenced instead.
2485 * src_{x,y,w,h} are provided in 16.16 fixed point format
2487 static int __setplane_internal(struct drm_plane *plane,
2488 struct drm_crtc *crtc,
2489 struct drm_framebuffer *fb,
2490 int32_t crtc_x, int32_t crtc_y,
2491 uint32_t crtc_w, uint32_t crtc_h,
2492 /* src_{x,y,w,h} values are 16.16 fixed point */
2493 uint32_t src_x, uint32_t src_y,
2494 uint32_t src_w, uint32_t src_h)
2498 /* No fb means shut it down */
2500 plane->old_fb = plane->fb;
2501 ret = plane->funcs->disable_plane(plane);
2506 plane->old_fb = NULL;
2511 /* Check whether this plane is usable on this CRTC */
2512 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2513 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2518 /* Check whether this plane supports the fb pixel format. */
2519 ret = drm_plane_check_pixel_format(plane, fb->pixel_format);
2521 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2522 drm_get_format_name(fb->pixel_format));
2526 /* Give drivers some help against integer overflows */
2527 if (crtc_w > INT_MAX ||
2528 crtc_x > INT_MAX - (int32_t) crtc_w ||
2530 crtc_y > INT_MAX - (int32_t) crtc_h) {
2531 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2532 crtc_w, crtc_h, crtc_x, crtc_y);
2537 ret = check_src_coords(src_x, src_y, src_w, src_h, fb);
2541 plane->old_fb = plane->fb;
2542 ret = plane->funcs->update_plane(plane, crtc, fb,
2543 crtc_x, crtc_y, crtc_w, crtc_h,
2544 src_x, src_y, src_w, src_h);
2550 plane->old_fb = NULL;
2555 drm_framebuffer_unreference(fb);
2557 drm_framebuffer_unreference(plane->old_fb);
2558 plane->old_fb = NULL;
2563 static int setplane_internal(struct drm_plane *plane,
2564 struct drm_crtc *crtc,
2565 struct drm_framebuffer *fb,
2566 int32_t crtc_x, int32_t crtc_y,
2567 uint32_t crtc_w, uint32_t crtc_h,
2568 /* src_{x,y,w,h} values are 16.16 fixed point */
2569 uint32_t src_x, uint32_t src_y,
2570 uint32_t src_w, uint32_t src_h)
2574 drm_modeset_lock_all(plane->dev);
2575 ret = __setplane_internal(plane, crtc, fb,
2576 crtc_x, crtc_y, crtc_w, crtc_h,
2577 src_x, src_y, src_w, src_h);
2578 drm_modeset_unlock_all(plane->dev);
2584 * drm_mode_setplane - configure a plane's configuration
2586 * @data: ioctl data*
2587 * @file_priv: DRM file info
2589 * Set plane configuration, including placement, fb, scaling, and other factors.
2590 * Or pass a NULL fb to disable (planes may be disabled without providing a
2594 * Zero on success, negative errno on failure.
2596 int drm_mode_setplane(struct drm_device *dev, void *data,
2597 struct drm_file *file_priv)
2599 struct drm_mode_set_plane *plane_req = data;
2600 struct drm_plane *plane;
2601 struct drm_crtc *crtc = NULL;
2602 struct drm_framebuffer *fb = NULL;
2604 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2608 * First, find the plane, crtc, and fb objects. If not available,
2609 * we don't bother to call the driver.
2611 plane = drm_plane_find(dev, plane_req->plane_id);
2613 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2614 plane_req->plane_id);
2618 if (plane_req->fb_id) {
2619 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2621 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2626 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2628 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2629 plane_req->crtc_id);
2635 * setplane_internal will take care of deref'ing either the old or new
2636 * framebuffer depending on success.
2638 return setplane_internal(plane, crtc, fb,
2639 plane_req->crtc_x, plane_req->crtc_y,
2640 plane_req->crtc_w, plane_req->crtc_h,
2641 plane_req->src_x, plane_req->src_y,
2642 plane_req->src_w, plane_req->src_h);
2646 * drm_mode_set_config_internal - helper to call ->set_config
2647 * @set: modeset config to set
2649 * This is a little helper to wrap internal calls to the ->set_config driver
2650 * interface. The only thing it adds is correct refcounting dance.
2653 * Zero on success, negative errno on failure.
2655 int drm_mode_set_config_internal(struct drm_mode_set *set)
2657 struct drm_crtc *crtc = set->crtc;
2658 struct drm_framebuffer *fb;
2659 struct drm_crtc *tmp;
2663 * NOTE: ->set_config can also disable other crtcs (if we steal all
2664 * connectors from it), hence we need to refcount the fbs across all
2665 * crtcs. Atomic modeset will have saner semantics ...
2667 drm_for_each_crtc(tmp, crtc->dev)
2668 tmp->primary->old_fb = tmp->primary->fb;
2672 ret = crtc->funcs->set_config(set);
2674 crtc->primary->crtc = crtc;
2675 crtc->primary->fb = fb;
2678 drm_for_each_crtc(tmp, crtc->dev) {
2679 if (tmp->primary->fb)
2680 drm_framebuffer_reference(tmp->primary->fb);
2681 if (tmp->primary->old_fb)
2682 drm_framebuffer_unreference(tmp->primary->old_fb);
2683 tmp->primary->old_fb = NULL;
2688 EXPORT_SYMBOL(drm_mode_set_config_internal);
2691 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2692 * @mode: mode to query
2693 * @hdisplay: hdisplay value to fill in
2694 * @vdisplay: vdisplay value to fill in
2696 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2697 * the appropriate layout.
2699 void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
2700 int *hdisplay, int *vdisplay)
2702 struct drm_display_mode adjusted;
2704 drm_mode_copy(&adjusted, mode);
2705 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
2706 *hdisplay = adjusted.crtc_hdisplay;
2707 *vdisplay = adjusted.crtc_vdisplay;
2709 EXPORT_SYMBOL(drm_crtc_get_hv_timing);
2712 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2714 * @crtc: CRTC that framebuffer will be displayed on
2717 * @mode: mode that framebuffer will be displayed under
2718 * @fb: framebuffer to check size of
2720 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2722 const struct drm_display_mode *mode,
2723 const struct drm_framebuffer *fb)
2726 int hdisplay, vdisplay;
2728 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
2731 crtc->primary->state->rotation & (BIT(DRM_ROTATE_90) |
2732 BIT(DRM_ROTATE_270)))
2733 swap(hdisplay, vdisplay);
2735 return check_src_coords(x << 16, y << 16,
2736 hdisplay << 16, vdisplay << 16, fb);
2738 EXPORT_SYMBOL(drm_crtc_check_viewport);
2741 * drm_mode_setcrtc - set CRTC configuration
2742 * @dev: drm device for the ioctl
2743 * @data: data pointer for the ioctl
2744 * @file_priv: drm file for the ioctl call
2746 * Build a new CRTC configuration based on user request.
2748 * Called by the user via ioctl.
2751 * Zero on success, negative errno on failure.
2753 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2754 struct drm_file *file_priv)
2756 struct drm_mode_config *config = &dev->mode_config;
2757 struct drm_mode_crtc *crtc_req = data;
2758 struct drm_crtc *crtc;
2759 struct drm_connector **connector_set = NULL, *connector;
2760 struct drm_framebuffer *fb = NULL;
2761 struct drm_display_mode *mode = NULL;
2762 struct drm_mode_set set;
2763 uint32_t __user *set_connectors_ptr;
2767 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2771 * Universal plane src offsets are only 16.16, prevent havoc for
2772 * drivers using universal plane code internally.
2774 if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000)
2777 drm_modeset_lock_all(dev);
2778 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2780 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2784 DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name);
2786 if (crtc_req->mode_valid) {
2787 /* If we have a mode we need a framebuffer. */
2788 /* If we pass -1, set the mode with the currently bound fb */
2789 if (crtc_req->fb_id == -1) {
2790 if (!crtc->primary->fb) {
2791 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2795 fb = crtc->primary->fb;
2796 /* Make refcounting symmetric with the lookup path. */
2797 drm_framebuffer_reference(fb);
2799 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2801 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2808 mode = drm_mode_create(dev);
2814 ret = drm_mode_convert_umode(mode, &crtc_req->mode);
2816 DRM_DEBUG_KMS("Invalid mode\n");
2820 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2823 * Check whether the primary plane supports the fb pixel format.
2824 * Drivers not implementing the universal planes API use a
2825 * default formats list provided by the DRM core which doesn't
2826 * match real hardware capabilities. Skip the check in that
2829 if (!crtc->primary->format_default) {
2830 ret = drm_plane_check_pixel_format(crtc->primary,
2833 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2834 drm_get_format_name(fb->pixel_format));
2839 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2846 if (crtc_req->count_connectors == 0 && mode) {
2847 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2852 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2853 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2854 crtc_req->count_connectors);
2859 if (crtc_req->count_connectors > 0) {
2862 /* Avoid unbounded kernel memory allocation */
2863 if (crtc_req->count_connectors > config->num_connector) {
2868 connector_set = kmalloc_array(crtc_req->count_connectors,
2869 sizeof(struct drm_connector *),
2871 if (!connector_set) {
2876 for (i = 0; i < crtc_req->count_connectors; i++) {
2877 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2878 if (get_user(out_id, &set_connectors_ptr[i])) {
2883 connector = drm_connector_find(dev, out_id);
2885 DRM_DEBUG_KMS("Connector id %d unknown\n",
2890 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2894 connector_set[i] = connector;
2899 set.x = crtc_req->x;
2900 set.y = crtc_req->y;
2902 set.connectors = connector_set;
2903 set.num_connectors = crtc_req->count_connectors;
2905 ret = drm_mode_set_config_internal(&set);
2909 drm_framebuffer_unreference(fb);
2911 kfree(connector_set);
2912 drm_mode_destroy(dev, mode);
2913 drm_modeset_unlock_all(dev);
2918 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2919 * universal plane handler call
2920 * @crtc: crtc to update cursor for
2921 * @req: data pointer for the ioctl
2922 * @file_priv: drm file for the ioctl call
2924 * Legacy cursor ioctl's work directly with driver buffer handles. To
2925 * translate legacy ioctl calls into universal plane handler calls, we need to
2926 * wrap the native buffer handle in a drm_framebuffer.
2928 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2929 * buffer with a pitch of 4*width; the universal plane interface should be used
2930 * directly in cases where the hardware can support other buffer settings and
2931 * userspace wants to make use of these capabilities.
2934 * Zero on success, negative errno on failure.
2936 static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2937 struct drm_mode_cursor2 *req,
2938 struct drm_file *file_priv)
2940 struct drm_device *dev = crtc->dev;
2941 struct drm_framebuffer *fb = NULL;
2942 struct drm_mode_fb_cmd2 fbreq = {
2943 .width = req->width,
2944 .height = req->height,
2945 .pixel_format = DRM_FORMAT_ARGB8888,
2946 .pitches = { req->width * 4 },
2947 .handles = { req->handle },
2949 int32_t crtc_x, crtc_y;
2950 uint32_t crtc_w = 0, crtc_h = 0;
2951 uint32_t src_w = 0, src_h = 0;
2954 BUG_ON(!crtc->cursor);
2955 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
2958 * Obtain fb we'll be using (either new or existing) and take an extra
2959 * reference to it if fb != null. setplane will take care of dropping
2960 * the reference if the plane update fails.
2962 if (req->flags & DRM_MODE_CURSOR_BO) {
2964 fb = internal_framebuffer_create(dev, &fbreq, file_priv);
2966 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2973 fb = crtc->cursor->fb;
2975 drm_framebuffer_reference(fb);
2978 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2982 crtc_x = crtc->cursor_x;
2983 crtc_y = crtc->cursor_y;
2988 crtc_h = fb->height;
2989 src_w = fb->width << 16;
2990 src_h = fb->height << 16;
2994 * setplane_internal will take care of deref'ing either the old or new
2995 * framebuffer depending on success.
2997 ret = __setplane_internal(crtc->cursor, crtc, fb,
2998 crtc_x, crtc_y, crtc_w, crtc_h,
2999 0, 0, src_w, src_h);
3001 /* Update successful; save new cursor position, if necessary */
3002 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
3003 crtc->cursor_x = req->x;
3004 crtc->cursor_y = req->y;
3010 static int drm_mode_cursor_common(struct drm_device *dev,
3011 struct drm_mode_cursor2 *req,
3012 struct drm_file *file_priv)
3014 struct drm_crtc *crtc;
3017 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3020 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
3023 crtc = drm_crtc_find(dev, req->crtc_id);
3025 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
3030 * If this crtc has a universal cursor plane, call that plane's update
3031 * handler rather than using legacy cursor handlers.
3033 drm_modeset_lock_crtc(crtc, crtc->cursor);
3035 ret = drm_mode_cursor_universal(crtc, req, file_priv);
3039 if (req->flags & DRM_MODE_CURSOR_BO) {
3040 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
3044 /* Turns off the cursor if handle is 0 */
3045 if (crtc->funcs->cursor_set2)
3046 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
3047 req->width, req->height, req->hot_x, req->hot_y);
3049 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
3050 req->width, req->height);
3053 if (req->flags & DRM_MODE_CURSOR_MOVE) {
3054 if (crtc->funcs->cursor_move) {
3055 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
3062 drm_modeset_unlock_crtc(crtc);
3070 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
3071 * @dev: drm device for the ioctl
3072 * @data: data pointer for the ioctl
3073 * @file_priv: drm file for the ioctl call
3075 * Set the cursor configuration based on user request.
3077 * Called by the user via ioctl.
3080 * Zero on success, negative errno on failure.
3082 int drm_mode_cursor_ioctl(struct drm_device *dev,
3083 void *data, struct drm_file *file_priv)
3085 struct drm_mode_cursor *req = data;
3086 struct drm_mode_cursor2 new_req;
3088 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
3089 new_req.hot_x = new_req.hot_y = 0;
3091 return drm_mode_cursor_common(dev, &new_req, file_priv);
3095 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3096 * @dev: drm device for the ioctl
3097 * @data: data pointer for the ioctl
3098 * @file_priv: drm file for the ioctl call
3100 * Set the cursor configuration based on user request. This implements the 2nd
3101 * version of the cursor ioctl, which allows userspace to additionally specify
3102 * the hotspot of the pointer.
3104 * Called by the user via ioctl.
3107 * Zero on success, negative errno on failure.
3109 int drm_mode_cursor2_ioctl(struct drm_device *dev,
3110 void *data, struct drm_file *file_priv)
3112 struct drm_mode_cursor2 *req = data;
3114 return drm_mode_cursor_common(dev, req, file_priv);
3118 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3119 * @bpp: bits per pixels
3120 * @depth: bit depth per pixel
3122 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3123 * Useful in fbdev emulation code, since that deals in those values.
3125 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
3131 fmt = DRM_FORMAT_C8;
3135 fmt = DRM_FORMAT_XRGB1555;
3137 fmt = DRM_FORMAT_RGB565;
3140 fmt = DRM_FORMAT_RGB888;
3144 fmt = DRM_FORMAT_XRGB8888;
3145 else if (depth == 30)
3146 fmt = DRM_FORMAT_XRGB2101010;
3148 fmt = DRM_FORMAT_ARGB8888;
3151 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3152 fmt = DRM_FORMAT_XRGB8888;
3158 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3161 * drm_mode_addfb - add an FB to the graphics configuration
3162 * @dev: drm device for the ioctl
3163 * @data: data pointer for the ioctl
3164 * @file_priv: drm file for the ioctl call
3166 * Add a new FB to the specified CRTC, given a user request. This is the
3167 * original addfb ioctl which only supported RGB formats.
3169 * Called by the user via ioctl.
3172 * Zero on success, negative errno on failure.
3174 int drm_mode_addfb(struct drm_device *dev,
3175 void *data, struct drm_file *file_priv)
3177 struct drm_mode_fb_cmd *or = data;
3178 struct drm_mode_fb_cmd2 r = {};
3181 /* convert to new format and call new ioctl */
3182 r.fb_id = or->fb_id;
3183 r.width = or->width;
3184 r.height = or->height;
3185 r.pitches[0] = or->pitch;
3186 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3187 r.handles[0] = or->handle;
3189 ret = drm_mode_addfb2(dev, &r, file_priv);
3193 or->fb_id = r.fb_id;
3198 static int format_check(const struct drm_mode_fb_cmd2 *r)
3200 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3204 case DRM_FORMAT_RGB332:
3205 case DRM_FORMAT_BGR233:
3206 case DRM_FORMAT_XRGB4444:
3207 case DRM_FORMAT_XBGR4444:
3208 case DRM_FORMAT_RGBX4444:
3209 case DRM_FORMAT_BGRX4444:
3210 case DRM_FORMAT_ARGB4444:
3211 case DRM_FORMAT_ABGR4444:
3212 case DRM_FORMAT_RGBA4444:
3213 case DRM_FORMAT_BGRA4444:
3214 case DRM_FORMAT_XRGB1555:
3215 case DRM_FORMAT_XBGR1555:
3216 case DRM_FORMAT_RGBX5551:
3217 case DRM_FORMAT_BGRX5551:
3218 case DRM_FORMAT_ARGB1555:
3219 case DRM_FORMAT_ABGR1555:
3220 case DRM_FORMAT_RGBA5551:
3221 case DRM_FORMAT_BGRA5551:
3222 case DRM_FORMAT_RGB565:
3223 case DRM_FORMAT_BGR565:
3224 case DRM_FORMAT_RGB888:
3225 case DRM_FORMAT_BGR888:
3226 case DRM_FORMAT_XRGB8888:
3227 case DRM_FORMAT_XBGR8888:
3228 case DRM_FORMAT_RGBX8888:
3229 case DRM_FORMAT_BGRX8888:
3230 case DRM_FORMAT_ARGB8888:
3231 case DRM_FORMAT_ABGR8888:
3232 case DRM_FORMAT_RGBA8888:
3233 case DRM_FORMAT_BGRA8888:
3234 case DRM_FORMAT_XRGB2101010:
3235 case DRM_FORMAT_XBGR2101010:
3236 case DRM_FORMAT_RGBX1010102:
3237 case DRM_FORMAT_BGRX1010102:
3238 case DRM_FORMAT_ARGB2101010:
3239 case DRM_FORMAT_ABGR2101010:
3240 case DRM_FORMAT_RGBA1010102:
3241 case DRM_FORMAT_BGRA1010102:
3242 case DRM_FORMAT_YUYV:
3243 case DRM_FORMAT_YVYU:
3244 case DRM_FORMAT_UYVY:
3245 case DRM_FORMAT_VYUY:
3246 case DRM_FORMAT_AYUV:
3247 case DRM_FORMAT_NV12:
3248 case DRM_FORMAT_NV21:
3249 case DRM_FORMAT_NV16:
3250 case DRM_FORMAT_NV61:
3251 case DRM_FORMAT_NV24:
3252 case DRM_FORMAT_NV42:
3253 case DRM_FORMAT_YUV410:
3254 case DRM_FORMAT_YVU410:
3255 case DRM_FORMAT_YUV411:
3256 case DRM_FORMAT_YVU411:
3257 case DRM_FORMAT_YUV420:
3258 case DRM_FORMAT_YVU420:
3259 case DRM_FORMAT_YUV422:
3260 case DRM_FORMAT_YVU422:
3261 case DRM_FORMAT_YUV444:
3262 case DRM_FORMAT_YVU444:
3265 DRM_DEBUG_KMS("invalid pixel format %s\n",
3266 drm_get_format_name(r->pixel_format));
3271 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
3273 int ret, hsub, vsub, num_planes, i;
3275 ret = format_check(r);
3277 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3278 drm_get_format_name(r->pixel_format));
3282 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3283 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3284 num_planes = drm_format_num_planes(r->pixel_format);
3286 if (r->width == 0 || r->width % hsub) {
3287 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
3291 if (r->height == 0 || r->height % vsub) {
3292 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
3296 for (i = 0; i < num_planes; i++) {
3297 unsigned int width = r->width / (i != 0 ? hsub : 1);
3298 unsigned int height = r->height / (i != 0 ? vsub : 1);
3299 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
3301 if (!r->handles[i]) {
3302 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
3306 if ((uint64_t) width * cpp > UINT_MAX)
3309 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3312 if (r->pitches[i] < width * cpp) {
3313 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
3317 if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
3318 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3323 /* modifier specific checks: */
3324 switch (r->modifier[i]) {
3325 case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE:
3326 /* NOTE: the pitch restriction may be lifted later if it turns
3327 * out that no hw has this restriction:
3329 if (r->pixel_format != DRM_FORMAT_NV12 ||
3330 width % 128 || height % 32 ||
3331 r->pitches[i] % 128) {
3332 DRM_DEBUG_KMS("bad modifier data for plane %d\n", i);
3342 for (i = num_planes; i < 4; i++) {
3343 if (r->modifier[i]) {
3344 DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i);
3348 /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
3349 if (!(r->flags & DRM_MODE_FB_MODIFIERS))
3352 if (r->handles[i]) {
3353 DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i);
3357 if (r->pitches[i]) {
3358 DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i);
3362 if (r->offsets[i]) {
3363 DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i);
3371 static struct drm_framebuffer *
3372 internal_framebuffer_create(struct drm_device *dev,
3373 const struct drm_mode_fb_cmd2 *r,
3374 struct drm_file *file_priv)
3376 struct drm_mode_config *config = &dev->mode_config;
3377 struct drm_framebuffer *fb;
3380 if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
3381 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
3382 return ERR_PTR(-EINVAL);
3385 if ((config->min_width > r->width) || (r->width > config->max_width)) {
3386 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3387 r->width, config->min_width, config->max_width);
3388 return ERR_PTR(-EINVAL);
3390 if ((config->min_height > r->height) || (r->height > config->max_height)) {
3391 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3392 r->height, config->min_height, config->max_height);
3393 return ERR_PTR(-EINVAL);
3396 if (r->flags & DRM_MODE_FB_MODIFIERS &&
3397 !dev->mode_config.allow_fb_modifiers) {
3398 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3399 return ERR_PTR(-EINVAL);
3402 ret = framebuffer_check(r);
3404 return ERR_PTR(ret);
3406 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
3408 DRM_DEBUG_KMS("could not create framebuffer\n");
3416 * drm_mode_addfb2 - add an FB to the graphics configuration
3417 * @dev: drm device for the ioctl
3418 * @data: data pointer for the ioctl
3419 * @file_priv: drm file for the ioctl call
3421 * Add a new FB to the specified CRTC, given a user request with format. This is
3422 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3423 * and uses fourcc codes as pixel format specifiers.
3425 * Called by the user via ioctl.
3428 * Zero on success, negative errno on failure.
3430 int drm_mode_addfb2(struct drm_device *dev,
3431 void *data, struct drm_file *file_priv)
3433 struct drm_mode_fb_cmd2 *r = data;
3434 struct drm_framebuffer *fb;
3436 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3439 fb = internal_framebuffer_create(dev, r, file_priv);
3443 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3444 r->fb_id = fb->base.id;
3446 /* Transfer ownership to the filp for reaping on close */
3447 mutex_lock(&file_priv->fbs_lock);
3448 list_add(&fb->filp_head, &file_priv->fbs);
3449 mutex_unlock(&file_priv->fbs_lock);
3455 * drm_mode_rmfb - remove an FB from the configuration
3456 * @dev: drm device for the ioctl
3457 * @data: data pointer for the ioctl
3458 * @file_priv: drm file for the ioctl call
3460 * Remove the FB specified by the user.
3462 * Called by the user via ioctl.
3465 * Zero on success, negative errno on failure.
3467 int drm_mode_rmfb(struct drm_device *dev,
3468 void *data, struct drm_file *file_priv)
3470 struct drm_framebuffer *fb = NULL;
3471 struct drm_framebuffer *fbl = NULL;
3472 uint32_t *id = data;
3475 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3478 fb = drm_framebuffer_lookup(dev, *id);
3482 mutex_lock(&file_priv->fbs_lock);
3483 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3487 mutex_unlock(&file_priv->fbs_lock);
3491 list_del_init(&fb->filp_head);
3492 mutex_unlock(&file_priv->fbs_lock);
3494 /* we now own the reference that was stored in the fbs list */
3495 drm_framebuffer_unreference(fb);
3497 /* drop the reference we picked up in framebuffer lookup */
3498 drm_framebuffer_unreference(fb);
3503 drm_framebuffer_unreference(fb);
3508 * drm_mode_getfb - get FB info
3509 * @dev: drm device for the ioctl
3510 * @data: data pointer for the ioctl
3511 * @file_priv: drm file for the ioctl call
3513 * Lookup the FB given its ID and return info about it.
3515 * Called by the user via ioctl.
3518 * Zero on success, negative errno on failure.
3520 int drm_mode_getfb(struct drm_device *dev,
3521 void *data, struct drm_file *file_priv)
3523 struct drm_mode_fb_cmd *r = data;
3524 struct drm_framebuffer *fb;
3527 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3530 fb = drm_framebuffer_lookup(dev, r->fb_id);
3534 r->height = fb->height;
3535 r->width = fb->width;
3536 r->depth = fb->depth;
3537 r->bpp = fb->bits_per_pixel;
3538 r->pitch = fb->pitches[0];
3539 if (fb->funcs->create_handle) {
3540 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
3541 drm_is_control_client(file_priv)) {
3542 ret = fb->funcs->create_handle(fb, file_priv,
3545 /* GET_FB() is an unprivileged ioctl so we must not
3546 * return a buffer-handle to non-master processes! For
3547 * backwards-compatibility reasons, we cannot make
3548 * GET_FB() privileged, so just return an invalid handle
3549 * for non-masters. */
3557 drm_framebuffer_unreference(fb);
3563 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3564 * @dev: drm device for the ioctl
3565 * @data: data pointer for the ioctl
3566 * @file_priv: drm file for the ioctl call
3568 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3569 * rectangle list. Generic userspace which does frontbuffer rendering must call
3570 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3571 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3573 * Modesetting drivers which always update the frontbuffer do not need to
3574 * implement the corresponding ->dirty framebuffer callback.
3576 * Called by the user via ioctl.
3579 * Zero on success, negative errno on failure.
3581 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3582 void *data, struct drm_file *file_priv)
3584 struct drm_clip_rect __user *clips_ptr;
3585 struct drm_clip_rect *clips = NULL;
3586 struct drm_mode_fb_dirty_cmd *r = data;
3587 struct drm_framebuffer *fb;
3592 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3595 fb = drm_framebuffer_lookup(dev, r->fb_id);
3599 num_clips = r->num_clips;
3600 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3602 if (!num_clips != !clips_ptr) {
3607 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3609 /* If userspace annotates copy, clips must come in pairs */
3610 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3615 if (num_clips && clips_ptr) {
3616 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3620 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
3626 ret = copy_from_user(clips, clips_ptr,
3627 num_clips * sizeof(*clips));
3634 if (fb->funcs->dirty) {
3635 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3644 drm_framebuffer_unreference(fb);
3651 * drm_fb_release - remove and free the FBs on this file
3652 * @priv: drm file for the ioctl
3654 * Destroy all the FBs associated with @filp.
3656 * Called by the user via ioctl.
3659 * Zero on success, negative errno on failure.
3661 void drm_fb_release(struct drm_file *priv)
3663 struct drm_framebuffer *fb, *tfb;
3666 * When the file gets released that means no one else can access the fb
3667 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3668 * avoid upsetting lockdep since the universal cursor code adds a
3669 * framebuffer while holding mutex locks.
3671 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3672 * locks is impossible here since no one else but this function can get
3675 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3676 list_del_init(&fb->filp_head);
3678 /* This drops the fpriv->fbs reference. */
3679 drm_framebuffer_unreference(fb);
3684 * drm_property_create - create a new property type
3686 * @flags: flags specifying the property type
3687 * @name: name of the property
3688 * @num_values: number of pre-defined values
3690 * This creates a new generic drm property which can then be attached to a drm
3691 * object with drm_object_attach_property. The returned property object must be
3692 * freed with drm_property_destroy.
3694 * Note that the DRM core keeps a per-device list of properties and that, if
3695 * drm_mode_config_cleanup() is called, it will destroy all properties created
3699 * A pointer to the newly created property on success, NULL on failure.
3701 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3702 const char *name, int num_values)
3704 struct drm_property *property = NULL;
3707 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3711 property->dev = dev;
3714 property->values = kcalloc(num_values, sizeof(uint64_t),
3716 if (!property->values)
3720 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3724 property->flags = flags;
3725 property->num_values = num_values;
3726 INIT_LIST_HEAD(&property->enum_list);
3729 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3730 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3733 list_add_tail(&property->head, &dev->mode_config.property_list);
3735 WARN_ON(!drm_property_type_valid(property));
3739 kfree(property->values);
3743 EXPORT_SYMBOL(drm_property_create);
3746 * drm_property_create_enum - create a new enumeration property type
3748 * @flags: flags specifying the property type
3749 * @name: name of the property
3750 * @props: enumeration lists with property values
3751 * @num_values: number of pre-defined values
3753 * This creates a new generic drm property which can then be attached to a drm
3754 * object with drm_object_attach_property. The returned property object must be
3755 * freed with drm_property_destroy.
3757 * Userspace is only allowed to set one of the predefined values for enumeration
3761 * A pointer to the newly created property on success, NULL on failure.
3763 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3765 const struct drm_prop_enum_list *props,
3768 struct drm_property *property;
3771 flags |= DRM_MODE_PROP_ENUM;
3773 property = drm_property_create(dev, flags, name, num_values);
3777 for (i = 0; i < num_values; i++) {
3778 ret = drm_property_add_enum(property, i,
3782 drm_property_destroy(dev, property);
3789 EXPORT_SYMBOL(drm_property_create_enum);
3792 * drm_property_create_bitmask - create a new bitmask property type
3794 * @flags: flags specifying the property type
3795 * @name: name of the property
3796 * @props: enumeration lists with property bitflags
3797 * @num_props: size of the @props array
3798 * @supported_bits: bitmask of all supported enumeration values
3800 * This creates a new bitmask drm property which can then be attached to a drm
3801 * object with drm_object_attach_property. The returned property object must be
3802 * freed with drm_property_destroy.
3804 * Compared to plain enumeration properties userspace is allowed to set any
3805 * or'ed together combination of the predefined property bitflag values
3808 * A pointer to the newly created property on success, NULL on failure.
3810 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3811 int flags, const char *name,
3812 const struct drm_prop_enum_list *props,
3814 uint64_t supported_bits)
3816 struct drm_property *property;
3817 int i, ret, index = 0;
3818 int num_values = hweight64(supported_bits);
3820 flags |= DRM_MODE_PROP_BITMASK;
3822 property = drm_property_create(dev, flags, name, num_values);
3825 for (i = 0; i < num_props; i++) {
3826 if (!(supported_bits & (1ULL << props[i].type)))
3829 if (WARN_ON(index >= num_values)) {
3830 drm_property_destroy(dev, property);
3834 ret = drm_property_add_enum(property, index++,
3838 drm_property_destroy(dev, property);
3845 EXPORT_SYMBOL(drm_property_create_bitmask);
3847 static struct drm_property *property_create_range(struct drm_device *dev,
3848 int flags, const char *name,
3849 uint64_t min, uint64_t max)
3851 struct drm_property *property;
3853 property = drm_property_create(dev, flags, name, 2);
3857 property->values[0] = min;
3858 property->values[1] = max;
3864 * drm_property_create_range - create a new unsigned ranged property type
3866 * @flags: flags specifying the property type
3867 * @name: name of the property
3868 * @min: minimum value of the property
3869 * @max: maximum value of the property
3871 * This creates a new generic drm property which can then be attached to a drm
3872 * object with drm_object_attach_property. The returned property object must be
3873 * freed with drm_property_destroy.
3875 * Userspace is allowed to set any unsigned integer value in the (min, max)
3879 * A pointer to the newly created property on success, NULL on failure.
3881 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3883 uint64_t min, uint64_t max)
3885 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3888 EXPORT_SYMBOL(drm_property_create_range);
3891 * drm_property_create_signed_range - create a new signed ranged property type
3893 * @flags: flags specifying the property type
3894 * @name: name of the property
3895 * @min: minimum value of the property
3896 * @max: maximum value of the property
3898 * This creates a new generic drm property which can then be attached to a drm
3899 * object with drm_object_attach_property. The returned property object must be
3900 * freed with drm_property_destroy.
3902 * Userspace is allowed to set any signed integer value in the (min, max)
3906 * A pointer to the newly created property on success, NULL on failure.
3908 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3909 int flags, const char *name,
3910 int64_t min, int64_t max)
3912 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3913 name, I642U64(min), I642U64(max));
3915 EXPORT_SYMBOL(drm_property_create_signed_range);
3918 * drm_property_create_object - create a new object property type
3920 * @flags: flags specifying the property type
3921 * @name: name of the property
3922 * @type: object type from DRM_MODE_OBJECT_* defines
3924 * This creates a new generic drm property which can then be attached to a drm
3925 * object with drm_object_attach_property. The returned property object must be
3926 * freed with drm_property_destroy.
3928 * Userspace is only allowed to set this to any property value of the given
3929 * @type. Only useful for atomic properties, which is enforced.
3932 * A pointer to the newly created property on success, NULL on failure.
3934 struct drm_property *drm_property_create_object(struct drm_device *dev,
3935 int flags, const char *name, uint32_t type)
3937 struct drm_property *property;
3939 flags |= DRM_MODE_PROP_OBJECT;
3941 if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
3944 property = drm_property_create(dev, flags, name, 1);
3948 property->values[0] = type;
3952 EXPORT_SYMBOL(drm_property_create_object);
3955 * drm_property_create_bool - create a new boolean property type
3957 * @flags: flags specifying the property type
3958 * @name: name of the property
3960 * This creates a new generic drm property which can then be attached to a drm
3961 * object with drm_object_attach_property. The returned property object must be
3962 * freed with drm_property_destroy.
3964 * This is implemented as a ranged property with only {0, 1} as valid values.
3967 * A pointer to the newly created property on success, NULL on failure.
3969 struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
3972 return drm_property_create_range(dev, flags, name, 0, 1);
3974 EXPORT_SYMBOL(drm_property_create_bool);
3977 * drm_property_add_enum - add a possible value to an enumeration property
3978 * @property: enumeration property to change
3979 * @index: index of the new enumeration
3980 * @value: value of the new enumeration
3981 * @name: symbolic name of the new enumeration
3983 * This functions adds enumerations to a property.
3985 * It's use is deprecated, drivers should use one of the more specific helpers
3986 * to directly create the property with all enumerations already attached.
3989 * Zero on success, error code on failure.
3991 int drm_property_add_enum(struct drm_property *property, int index,
3992 uint64_t value, const char *name)
3994 struct drm_property_enum *prop_enum;
3996 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3997 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
4001 * Bitmask enum properties have the additional constraint of values
4004 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
4008 if (!list_empty(&property->enum_list)) {
4009 list_for_each_entry(prop_enum, &property->enum_list, head) {
4010 if (prop_enum->value == value) {
4011 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
4012 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
4018 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
4022 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
4023 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
4024 prop_enum->value = value;
4026 property->values[index] = value;
4027 list_add_tail(&prop_enum->head, &property->enum_list);
4030 EXPORT_SYMBOL(drm_property_add_enum);
4033 * drm_property_destroy - destroy a drm property
4035 * @property: property to destry
4037 * This function frees a property including any attached resources like
4038 * enumeration values.
4040 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
4042 struct drm_property_enum *prop_enum, *pt;
4044 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
4045 list_del(&prop_enum->head);
4049 if (property->num_values)
4050 kfree(property->values);
4051 drm_mode_object_unregister(dev, &property->base);
4052 list_del(&property->head);
4055 EXPORT_SYMBOL(drm_property_destroy);
4058 * drm_object_attach_property - attach a property to a modeset object
4059 * @obj: drm modeset object
4060 * @property: property to attach
4061 * @init_val: initial value of the property
4063 * This attaches the given property to the modeset object with the given initial
4064 * value. Currently this function cannot fail since the properties are stored in
4065 * a statically sized array.
4067 void drm_object_attach_property(struct drm_mode_object *obj,
4068 struct drm_property *property,
4071 int count = obj->properties->count;
4073 if (count == DRM_OBJECT_MAX_PROPERTY) {
4074 WARN(1, "Failed to attach object property (type: 0x%x). Please "
4075 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
4076 "you see this message on the same object type.\n",
4081 obj->properties->properties[count] = property;
4082 obj->properties->values[count] = init_val;
4083 obj->properties->count++;
4084 if (property->flags & DRM_MODE_PROP_ATOMIC)
4085 obj->properties->atomic_count++;
4087 EXPORT_SYMBOL(drm_object_attach_property);
4090 * drm_object_property_set_value - set the value of a property
4091 * @obj: drm mode object to set property value for
4092 * @property: property to set
4093 * @val: value the property should be set to
4095 * This functions sets a given property on a given object. This function only
4096 * changes the software state of the property, it does not call into the
4097 * driver's ->set_property callback.
4100 * Zero on success, error code on failure.
4102 int drm_object_property_set_value(struct drm_mode_object *obj,
4103 struct drm_property *property, uint64_t val)
4107 for (i = 0; i < obj->properties->count; i++) {
4108 if (obj->properties->properties[i] == property) {
4109 obj->properties->values[i] = val;
4116 EXPORT_SYMBOL(drm_object_property_set_value);
4119 * drm_object_property_get_value - retrieve the value of a property
4120 * @obj: drm mode object to get property value from
4121 * @property: property to retrieve
4122 * @val: storage for the property value
4124 * This function retrieves the softare state of the given property for the given
4125 * property. Since there is no driver callback to retrieve the current property
4126 * value this might be out of sync with the hardware, depending upon the driver
4130 * Zero on success, error code on failure.
4132 int drm_object_property_get_value(struct drm_mode_object *obj,
4133 struct drm_property *property, uint64_t *val)
4137 /* read-only properties bypass atomic mechanism and still store
4138 * their value in obj->properties->values[].. mostly to avoid
4139 * having to deal w/ EDID and similar props in atomic paths:
4141 if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
4142 !(property->flags & DRM_MODE_PROP_IMMUTABLE))
4143 return drm_atomic_get_property(obj, property, val);
4145 for (i = 0; i < obj->properties->count; i++) {
4146 if (obj->properties->properties[i] == property) {
4147 *val = obj->properties->values[i];
4154 EXPORT_SYMBOL(drm_object_property_get_value);
4157 * drm_mode_getproperty_ioctl - get the property metadata
4160 * @file_priv: DRM file info
4162 * This function retrieves the metadata for a given property, like the different
4163 * possible values for an enum property or the limits for a range property.
4165 * Blob properties are special
4167 * Called by the user via ioctl.
4170 * Zero on success, negative errno on failure.
4172 int drm_mode_getproperty_ioctl(struct drm_device *dev,
4173 void *data, struct drm_file *file_priv)
4175 struct drm_mode_get_property *out_resp = data;
4176 struct drm_property *property;
4178 int value_count = 0;
4181 struct drm_property_enum *prop_enum;
4182 struct drm_mode_property_enum __user *enum_ptr;
4183 uint64_t __user *values_ptr;
4185 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4188 drm_modeset_lock_all(dev);
4189 property = drm_property_find(dev, out_resp->prop_id);
4195 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4196 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4197 list_for_each_entry(prop_enum, &property->enum_list, head)
4201 value_count = property->num_values;
4203 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
4204 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
4205 out_resp->flags = property->flags;
4207 if ((out_resp->count_values >= value_count) && value_count) {
4208 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
4209 for (i = 0; i < value_count; i++) {
4210 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
4216 out_resp->count_values = value_count;
4218 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4219 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4220 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
4222 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
4223 list_for_each_entry(prop_enum, &property->enum_list, head) {
4225 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
4230 if (copy_to_user(&enum_ptr[copied].name,
4231 &prop_enum->name, DRM_PROP_NAME_LEN)) {
4238 out_resp->count_enum_blobs = enum_count;
4242 * NOTE: The idea seems to have been to use this to read all the blob
4243 * property values. But nothing ever added them to the corresponding
4244 * list, userspace always used the special-purpose get_blob ioctl to
4245 * read the value for a blob property. It also doesn't make a lot of
4246 * sense to return values here when everything else is just metadata for
4247 * the property itself.
4249 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4250 out_resp->count_enum_blobs = 0;
4252 drm_modeset_unlock_all(dev);
4257 * drm_property_create_blob - Create new blob property
4259 * Creates a new blob property for a specified DRM device, optionally
4262 * @dev: DRM device to create property for
4263 * @length: Length to allocate for blob data
4264 * @data: If specified, copies data into blob
4267 * New blob property with a single reference on success, or an ERR_PTR
4270 struct drm_property_blob *
4271 drm_property_create_blob(struct drm_device *dev, size_t length,
4274 struct drm_property_blob *blob;
4277 if (!length || length > ULONG_MAX - sizeof(struct drm_property_blob))
4278 return ERR_PTR(-EINVAL);
4280 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
4282 return ERR_PTR(-ENOMEM);
4284 /* This must be explicitly initialised, so we can safely call list_del
4285 * on it in the removal handler, even if it isn't in a file list. */
4286 INIT_LIST_HEAD(&blob->head_file);
4287 blob->length = length;
4291 memcpy(blob->data, data, length);
4293 mutex_lock(&dev->mode_config.blob_lock);
4295 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
4298 mutex_unlock(&dev->mode_config.blob_lock);
4299 return ERR_PTR(-EINVAL);
4302 kref_init(&blob->refcount);
4304 list_add_tail(&blob->head_global,
4305 &dev->mode_config.property_blob_list);
4307 mutex_unlock(&dev->mode_config.blob_lock);
4311 EXPORT_SYMBOL(drm_property_create_blob);
4314 * drm_property_free_blob - Blob property destructor
4316 * Internal free function for blob properties; must not be used directly.
4320 static void drm_property_free_blob(struct kref *kref)
4322 struct drm_property_blob *blob =
4323 container_of(kref, struct drm_property_blob, refcount);
4325 WARN_ON(!mutex_is_locked(&blob->dev->mode_config.blob_lock));
4327 list_del(&blob->head_global);
4328 list_del(&blob->head_file);
4329 drm_mode_object_unregister(blob->dev, &blob->base);
4335 * drm_property_unreference_blob - Unreference a blob property
4337 * Drop a reference on a blob property. May free the object.
4339 * @blob: Pointer to blob property
4341 void drm_property_unreference_blob(struct drm_property_blob *blob)
4343 struct drm_device *dev;
4350 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4352 if (kref_put_mutex(&blob->refcount, drm_property_free_blob,
4353 &dev->mode_config.blob_lock))
4354 mutex_unlock(&dev->mode_config.blob_lock);
4356 might_lock(&dev->mode_config.blob_lock);
4358 EXPORT_SYMBOL(drm_property_unreference_blob);
4361 * drm_property_unreference_blob_locked - Unreference a blob property with blob_lock held
4363 * Drop a reference on a blob property. May free the object. This must be
4364 * called with blob_lock held.
4366 * @blob: Pointer to blob property
4368 static void drm_property_unreference_blob_locked(struct drm_property_blob *blob)
4373 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4375 kref_put(&blob->refcount, drm_property_free_blob);
4379 * drm_property_destroy_user_blobs - destroy all blobs created by this client
4381 * @file_priv: destroy all blobs owned by this file handle
4383 void drm_property_destroy_user_blobs(struct drm_device *dev,
4384 struct drm_file *file_priv)
4386 struct drm_property_blob *blob, *bt;
4388 mutex_lock(&dev->mode_config.blob_lock);
4390 list_for_each_entry_safe(blob, bt, &file_priv->blobs, head_file) {
4391 list_del_init(&blob->head_file);
4392 drm_property_unreference_blob_locked(blob);
4395 mutex_unlock(&dev->mode_config.blob_lock);
4399 * drm_property_reference_blob - Take a reference on an existing property
4401 * Take a new reference on an existing blob property.
4403 * @blob: Pointer to blob property
4405 struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob)
4407 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4408 kref_get(&blob->refcount);
4411 EXPORT_SYMBOL(drm_property_reference_blob);
4414 * Like drm_property_lookup_blob, but does not return an additional reference.
4415 * Must be called with blob_lock held.
4417 static struct drm_property_blob *__drm_property_lookup_blob(struct drm_device *dev,
4420 struct drm_mode_object *obj = NULL;
4421 struct drm_property_blob *blob;
4423 WARN_ON(!mutex_is_locked(&dev->mode_config.blob_lock));
4425 mutex_lock(&dev->mode_config.idr_mutex);
4426 obj = idr_find(&dev->mode_config.crtc_idr, id);
4427 if (!obj || (obj->type != DRM_MODE_OBJECT_BLOB) || (obj->id != id))
4430 blob = obj_to_blob(obj);
4431 mutex_unlock(&dev->mode_config.idr_mutex);
4437 * drm_property_lookup_blob - look up a blob property and take a reference
4439 * @id: id of the blob property
4441 * If successful, this takes an additional reference to the blob property.
4442 * callers need to make sure to eventually unreference the returned property
4443 * again, using @drm_property_unreference_blob.
4445 struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
4448 struct drm_property_blob *blob;
4450 mutex_lock(&dev->mode_config.blob_lock);
4451 blob = __drm_property_lookup_blob(dev, id);
4453 if (!kref_get_unless_zero(&blob->refcount))
4456 mutex_unlock(&dev->mode_config.blob_lock);
4460 EXPORT_SYMBOL(drm_property_lookup_blob);
4463 * drm_property_replace_global_blob - atomically replace existing blob property
4465 * @replace: location of blob property pointer to be replaced
4466 * @length: length of data for new blob, or 0 for no data
4467 * @data: content for new blob, or NULL for no data
4468 * @obj_holds_id: optional object for property holding blob ID
4469 * @prop_holds_id: optional property holding blob ID
4470 * @return 0 on success or error on failure
4472 * This function will atomically replace a global property in the blob list,
4473 * optionally updating a property which holds the ID of that property. It is
4474 * guaranteed to be atomic: no caller will be allowed to see intermediate
4475 * results, and either the entire operation will succeed and clean up the
4476 * previous property, or it will fail and the state will be unchanged.
4478 * If length is 0 or data is NULL, no new blob will be created, and the holding
4479 * property, if specified, will be set to 0.
4481 * Access to the replace pointer is assumed to be protected by the caller, e.g.
4482 * by holding the relevant modesetting object lock for its parent.
4484 * For example, a drm_connector has a 'PATH' property, which contains the ID
4485 * of a blob property with the value of the MST path information. Calling this
4486 * function with replace pointing to the connector's path_blob_ptr, length and
4487 * data set for the new path information, obj_holds_id set to the connector's
4488 * base object, and prop_holds_id set to the path property name, will perform
4489 * a completely atomic update. The access to path_blob_ptr is protected by the
4490 * caller holding a lock on the connector.
4492 static int drm_property_replace_global_blob(struct drm_device *dev,
4493 struct drm_property_blob **replace,
4496 struct drm_mode_object *obj_holds_id,
4497 struct drm_property *prop_holds_id)
4499 struct drm_property_blob *new_blob = NULL;
4500 struct drm_property_blob *old_blob = NULL;
4503 WARN_ON(replace == NULL);
4505 old_blob = *replace;
4507 if (length && data) {
4508 new_blob = drm_property_create_blob(dev, length, data);
4509 if (IS_ERR(new_blob))
4510 return PTR_ERR(new_blob);
4513 /* This does not need to be synchronised with blob_lock, as the
4514 * get_properties ioctl locks all modesetting objects, and
4515 * obj_holds_id must be locked before calling here, so we cannot
4516 * have its value out of sync with the list membership modified
4517 * below under blob_lock. */
4519 ret = drm_object_property_set_value(obj_holds_id,
4522 new_blob->base.id : 0);
4527 drm_property_unreference_blob(old_blob);
4528 *replace = new_blob;
4533 drm_property_unreference_blob(new_blob);
4538 * drm_mode_getblob_ioctl - get the contents of a blob property value
4541 * @file_priv: DRM file info
4543 * This function retrieves the contents of a blob property. The value stored in
4544 * an object's blob property is just a normal modeset object id.
4546 * Called by the user via ioctl.
4549 * Zero on success, negative errno on failure.
4551 int drm_mode_getblob_ioctl(struct drm_device *dev,
4552 void *data, struct drm_file *file_priv)
4554 struct drm_mode_get_blob *out_resp = data;
4555 struct drm_property_blob *blob;
4557 void __user *blob_ptr;
4559 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4562 drm_modeset_lock_all(dev);
4563 mutex_lock(&dev->mode_config.blob_lock);
4564 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
4570 if (out_resp->length == blob->length) {
4571 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4572 if (copy_to_user(blob_ptr, blob->data, blob->length)) {
4577 out_resp->length = blob->length;
4580 mutex_unlock(&dev->mode_config.blob_lock);
4581 drm_modeset_unlock_all(dev);
4586 * drm_mode_createblob_ioctl - create a new blob property
4589 * @file_priv: DRM file info
4591 * This function creates a new blob property with user-defined values. In order
4592 * to give us sensible validation and checking when creating, rather than at
4593 * every potential use, we also require a type to be provided upfront.
4595 * Called by the user via ioctl.
4598 * Zero on success, negative errno on failure.
4600 int drm_mode_createblob_ioctl(struct drm_device *dev,
4601 void *data, struct drm_file *file_priv)
4603 struct drm_mode_create_blob *out_resp = data;
4604 struct drm_property_blob *blob;
4605 void __user *blob_ptr;
4608 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4611 blob = drm_property_create_blob(dev, out_resp->length, NULL);
4613 return PTR_ERR(blob);
4615 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4616 if (copy_from_user(blob->data, blob_ptr, out_resp->length)) {
4621 /* Dropping the lock between create_blob and our access here is safe
4622 * as only the same file_priv can remove the blob; at this point, it is
4623 * not associated with any file_priv. */
4624 mutex_lock(&dev->mode_config.blob_lock);
4625 out_resp->blob_id = blob->base.id;
4626 list_add_tail(&blob->head_file, &file_priv->blobs);
4627 mutex_unlock(&dev->mode_config.blob_lock);
4632 drm_property_unreference_blob(blob);
4637 * drm_mode_destroyblob_ioctl - destroy a user blob property
4640 * @file_priv: DRM file info
4642 * Destroy an existing user-defined blob property.
4644 * Called by the user via ioctl.
4647 * Zero on success, negative errno on failure.
4649 int drm_mode_destroyblob_ioctl(struct drm_device *dev,
4650 void *data, struct drm_file *file_priv)
4652 struct drm_mode_destroy_blob *out_resp = data;
4653 struct drm_property_blob *blob = NULL, *bt;
4657 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4660 mutex_lock(&dev->mode_config.blob_lock);
4661 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
4667 /* Ensure the property was actually created by this user. */
4668 list_for_each_entry(bt, &file_priv->blobs, head_file) {
4680 /* We must drop head_file here, because we may not be the last
4681 * reference on the blob. */
4682 list_del_init(&blob->head_file);
4683 drm_property_unreference_blob_locked(blob);
4684 mutex_unlock(&dev->mode_config.blob_lock);
4689 mutex_unlock(&dev->mode_config.blob_lock);
4694 * drm_mode_connector_set_path_property - set tile property on connector
4695 * @connector: connector to set property on.
4696 * @path: path to use for property; must not be NULL.
4698 * This creates a property to expose to userspace to specify a
4699 * connector path. This is mainly used for DisplayPort MST where
4700 * connectors have a topology and we want to allow userspace to give
4701 * them more meaningful names.
4704 * Zero on success, negative errno on failure.
4706 int drm_mode_connector_set_path_property(struct drm_connector *connector,
4709 struct drm_device *dev = connector->dev;
4712 ret = drm_property_replace_global_blob(dev,
4713 &connector->path_blob_ptr,
4717 dev->mode_config.path_property);
4720 EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4723 * drm_mode_connector_set_tile_property - set tile property on connector
4724 * @connector: connector to set property on.
4726 * This looks up the tile information for a connector, and creates a
4727 * property for userspace to parse if it exists. The property is of
4728 * the form of 8 integers using ':' as a separator.
4731 * Zero on success, errno on failure.
4733 int drm_mode_connector_set_tile_property(struct drm_connector *connector)
4735 struct drm_device *dev = connector->dev;
4739 if (!connector->has_tile) {
4740 ret = drm_property_replace_global_blob(dev,
4741 &connector->tile_blob_ptr,
4745 dev->mode_config.tile_property);
4749 snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4750 connector->tile_group->id, connector->tile_is_single_monitor,
4751 connector->num_h_tile, connector->num_v_tile,
4752 connector->tile_h_loc, connector->tile_v_loc,
4753 connector->tile_h_size, connector->tile_v_size);
4755 ret = drm_property_replace_global_blob(dev,
4756 &connector->tile_blob_ptr,
4760 dev->mode_config.tile_property);
4763 EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
4766 * drm_mode_connector_update_edid_property - update the edid property of a connector
4767 * @connector: drm connector
4768 * @edid: new value of the edid property
4770 * This function creates a new blob modeset object and assigns its id to the
4771 * connector's edid property.
4774 * Zero on success, negative errno on failure.
4776 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4777 const struct edid *edid)
4779 struct drm_device *dev = connector->dev;
4783 /* ignore requests to set edid when overridden */
4784 if (connector->override_edid)
4788 size = EDID_LENGTH * (1 + edid->extensions);
4790 ret = drm_property_replace_global_blob(dev,
4791 &connector->edid_blob_ptr,
4795 dev->mode_config.edid_property);
4798 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4800 /* Some properties could refer to dynamic refcnt'd objects, or things that
4801 * need special locking to handle lifetime issues (ie. to ensure the prop
4802 * value doesn't become invalid part way through the property update due to
4803 * race). The value returned by reference via 'obj' should be passed back
4804 * to drm_property_change_valid_put() after the property is set (and the
4805 * object to which the property is attached has a chance to take it's own
4808 bool drm_property_change_valid_get(struct drm_property *property,
4809 uint64_t value, struct drm_mode_object **ref)
4813 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4818 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
4819 if (value < property->values[0] || value > property->values[1])
4822 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4823 int64_t svalue = U642I64(value);
4825 if (svalue < U642I64(property->values[0]) ||
4826 svalue > U642I64(property->values[1]))
4829 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4830 uint64_t valid_mask = 0;
4832 for (i = 0; i < property->num_values; i++)
4833 valid_mask |= (1ULL << property->values[i]);
4834 return !(value & ~valid_mask);
4835 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
4836 struct drm_property_blob *blob;
4841 blob = drm_property_lookup_blob(property->dev, value);
4848 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4849 /* a zero value for an object property translates to null: */
4853 return _object_find(property->dev, value, property->values[0]) != NULL;
4856 for (i = 0; i < property->num_values; i++)
4857 if (property->values[i] == value)
4862 void drm_property_change_valid_put(struct drm_property *property,
4863 struct drm_mode_object *ref)
4868 if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4869 drm_mode_object_unreference(ref);
4870 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4871 drm_property_unreference_blob(obj_to_blob(ref));
4875 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4878 * @file_priv: DRM file info
4880 * This function sets the current value for a connectors's property. It also
4881 * calls into a driver's ->set_property callback to update the hardware state
4883 * Called by the user via ioctl.
4886 * Zero on success, negative errno on failure.
4888 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4889 void *data, struct drm_file *file_priv)
4891 struct drm_mode_connector_set_property *conn_set_prop = data;
4892 struct drm_mode_obj_set_property obj_set_prop = {
4893 .value = conn_set_prop->value,
4894 .prop_id = conn_set_prop->prop_id,
4895 .obj_id = conn_set_prop->connector_id,
4896 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4899 /* It does all the locking and checking we need */
4900 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
4903 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4904 struct drm_property *property,
4908 struct drm_connector *connector = obj_to_connector(obj);
4910 /* Do DPMS ourselves */
4911 if (property == connector->dev->mode_config.dpms_property) {
4912 ret = (*connector->funcs->dpms)(connector, (int)value);
4913 } else if (connector->funcs->set_property)
4914 ret = connector->funcs->set_property(connector, property, value);
4916 /* store the property value if successful */
4918 drm_object_property_set_value(&connector->base, property, value);
4922 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4923 struct drm_property *property,
4927 struct drm_crtc *crtc = obj_to_crtc(obj);
4929 if (crtc->funcs->set_property)
4930 ret = crtc->funcs->set_property(crtc, property, value);
4932 drm_object_property_set_value(obj, property, value);
4938 * drm_mode_plane_set_obj_prop - set the value of a property
4939 * @plane: drm plane object to set property value for
4940 * @property: property to set
4941 * @value: value the property should be set to
4943 * This functions sets a given property on a given plane object. This function
4944 * calls the driver's ->set_property callback and changes the software state of
4945 * the property if the callback succeeds.
4948 * Zero on success, error code on failure.
4950 int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4951 struct drm_property *property,
4955 struct drm_mode_object *obj = &plane->base;
4957 if (plane->funcs->set_property)
4958 ret = plane->funcs->set_property(plane, property, value);
4960 drm_object_property_set_value(obj, property, value);
4964 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4967 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4970 * @file_priv: DRM file info
4972 * This function retrieves the current value for an object's property. Compared
4973 * to the connector specific ioctl this one is extended to also work on crtc and
4976 * Called by the user via ioctl.
4979 * Zero on success, negative errno on failure.
4981 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4982 struct drm_file *file_priv)
4984 struct drm_mode_obj_get_properties *arg = data;
4985 struct drm_mode_object *obj;
4988 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4991 drm_modeset_lock_all(dev);
4993 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4998 if (!obj->properties) {
5003 ret = get_properties(obj, file_priv->atomic,
5004 (uint32_t __user *)(unsigned long)(arg->props_ptr),
5005 (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
5009 drm_modeset_unlock_all(dev);
5014 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
5017 * @file_priv: DRM file info
5019 * This function sets the current value for an object's property. It also calls
5020 * into a driver's ->set_property callback to update the hardware state.
5021 * Compared to the connector specific ioctl this one is extended to also work on
5022 * crtc and plane objects.
5024 * Called by the user via ioctl.
5027 * Zero on success, negative errno on failure.
5029 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
5030 struct drm_file *file_priv)
5032 struct drm_mode_obj_set_property *arg = data;
5033 struct drm_mode_object *arg_obj;
5034 struct drm_mode_object *prop_obj;
5035 struct drm_property *property;
5036 int i, ret = -EINVAL;
5037 struct drm_mode_object *ref;
5039 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5042 drm_modeset_lock_all(dev);
5044 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
5049 if (!arg_obj->properties)
5052 for (i = 0; i < arg_obj->properties->count; i++)
5053 if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
5056 if (i == arg_obj->properties->count)
5059 prop_obj = drm_mode_object_find(dev, arg->prop_id,
5060 DRM_MODE_OBJECT_PROPERTY);
5065 property = obj_to_property(prop_obj);
5067 if (!drm_property_change_valid_get(property, arg->value, &ref))
5070 switch (arg_obj->type) {
5071 case DRM_MODE_OBJECT_CONNECTOR:
5072 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
5075 case DRM_MODE_OBJECT_CRTC:
5076 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
5078 case DRM_MODE_OBJECT_PLANE:
5079 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
5080 property, arg->value);
5084 drm_property_change_valid_put(property, ref);
5087 drm_modeset_unlock_all(dev);
5092 * drm_mode_connector_attach_encoder - attach a connector to an encoder
5093 * @connector: connector to attach
5094 * @encoder: encoder to attach @connector to
5096 * This function links up a connector to an encoder. Note that the routing
5097 * restrictions between encoders and crtcs are exposed to userspace through the
5098 * possible_clones and possible_crtcs bitmasks.
5101 * Zero on success, negative errno on failure.
5103 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
5104 struct drm_encoder *encoder)
5109 * In the past, drivers have attempted to model the static association
5110 * of connector to encoder in simple connector/encoder devices using a
5111 * direct assignment of connector->encoder = encoder. This connection
5112 * is a logical one and the responsibility of the core, so drivers are
5113 * expected not to mess with this.
5115 * Note that the error return should've been enough here, but a large
5116 * majority of drivers ignores the return value, so add in a big WARN
5117 * to get people's attention.
5119 if (WARN_ON(connector->encoder))
5122 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
5123 if (connector->encoder_ids[i] == 0) {
5124 connector->encoder_ids[i] = encoder->base.id;
5130 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
5133 * drm_mode_crtc_set_gamma_size - set the gamma table size
5134 * @crtc: CRTC to set the gamma table size for
5135 * @gamma_size: size of the gamma table
5137 * Drivers which support gamma tables should set this to the supported gamma
5138 * table size when initializing the CRTC. Currently the drm core only supports a
5139 * fixed gamma table size.
5142 * Zero on success, negative errno on failure.
5144 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
5147 crtc->gamma_size = gamma_size;
5149 crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
5151 if (!crtc->gamma_store) {
5152 crtc->gamma_size = 0;
5158 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
5161 * drm_mode_gamma_set_ioctl - set the gamma table
5164 * @file_priv: DRM file info
5166 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
5167 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
5169 * Called by the user via ioctl.
5172 * Zero on success, negative errno on failure.
5174 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
5175 void *data, struct drm_file *file_priv)
5177 struct drm_mode_crtc_lut *crtc_lut = data;
5178 struct drm_crtc *crtc;
5179 void *r_base, *g_base, *b_base;
5183 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5186 drm_modeset_lock_all(dev);
5187 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5193 if (crtc->funcs->gamma_set == NULL) {
5198 /* memcpy into gamma store */
5199 if (crtc_lut->gamma_size != crtc->gamma_size) {
5204 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5205 r_base = crtc->gamma_store;
5206 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
5211 g_base = r_base + size;
5212 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
5217 b_base = g_base + size;
5218 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
5223 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
5226 drm_modeset_unlock_all(dev);
5232 * drm_mode_gamma_get_ioctl - get the gamma table
5235 * @file_priv: DRM file info
5237 * Copy the current gamma table into the storage provided. This also provides
5238 * the gamma table size the driver expects, which can be used to size the
5239 * allocated storage.
5241 * Called by the user via ioctl.
5244 * Zero on success, negative errno on failure.
5246 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
5247 void *data, struct drm_file *file_priv)
5249 struct drm_mode_crtc_lut *crtc_lut = data;
5250 struct drm_crtc *crtc;
5251 void *r_base, *g_base, *b_base;
5255 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5258 drm_modeset_lock_all(dev);
5259 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5265 /* memcpy into gamma store */
5266 if (crtc_lut->gamma_size != crtc->gamma_size) {
5271 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5272 r_base = crtc->gamma_store;
5273 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
5278 g_base = r_base + size;
5279 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
5284 b_base = g_base + size;
5285 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
5290 drm_modeset_unlock_all(dev);
5295 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
5298 * @file_priv: DRM file info
5300 * This schedules an asynchronous update on a given CRTC, called page flip.
5301 * Optionally a drm event is generated to signal the completion of the event.
5302 * Generic drivers cannot assume that a pageflip with changed framebuffer
5303 * properties (including driver specific metadata like tiling layout) will work,
5304 * but some drivers support e.g. pixel format changes through the pageflip
5307 * Called by the user via ioctl.
5310 * Zero on success, negative errno on failure.
5312 int drm_mode_page_flip_ioctl(struct drm_device *dev,
5313 void *data, struct drm_file *file_priv)
5315 struct drm_mode_crtc_page_flip *page_flip = data;
5316 struct drm_crtc *crtc;
5317 struct drm_framebuffer *fb = NULL;
5318 struct drm_pending_vblank_event *e = NULL;
5321 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
5322 page_flip->reserved != 0)
5325 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
5328 crtc = drm_crtc_find(dev, page_flip->crtc_id);
5332 drm_modeset_lock_crtc(crtc, crtc->primary);
5333 if (crtc->primary->fb == NULL) {
5334 /* The framebuffer is currently unbound, presumably
5335 * due to a hotplug event, that userspace has not
5342 if (crtc->funcs->page_flip == NULL)
5345 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
5352 const struct drm_plane_state *state = crtc->primary->state;
5354 ret = check_src_coords(state->src_x, state->src_y,
5355 state->src_w, state->src_h, fb);
5357 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
5362 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
5363 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
5368 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
5369 e = kzalloc(sizeof *e, GFP_KERNEL);
5374 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
5375 e->event.base.length = sizeof(e->event);
5376 e->event.user_data = page_flip->user_data;
5377 ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base);
5384 crtc->primary->old_fb = crtc->primary->fb;
5385 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
5387 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT)
5388 drm_event_cancel_free(dev, &e->base);
5389 /* Keep the old fb, don't unref it. */
5390 crtc->primary->old_fb = NULL;
5392 crtc->primary->fb = fb;
5393 /* Unref only the old framebuffer. */
5399 drm_framebuffer_unreference(fb);
5400 if (crtc->primary->old_fb)
5401 drm_framebuffer_unreference(crtc->primary->old_fb);
5402 crtc->primary->old_fb = NULL;
5403 drm_modeset_unlock_crtc(crtc);
5409 * drm_mode_config_reset - call ->reset callbacks
5412 * This functions calls all the crtc's, encoder's and connector's ->reset
5413 * callback. Drivers can use this in e.g. their driver load or resume code to
5414 * reset hardware and software state.
5416 void drm_mode_config_reset(struct drm_device *dev)
5418 struct drm_crtc *crtc;
5419 struct drm_plane *plane;
5420 struct drm_encoder *encoder;
5421 struct drm_connector *connector;
5423 drm_for_each_plane(plane, dev)
5424 if (plane->funcs->reset)
5425 plane->funcs->reset(plane);
5427 drm_for_each_crtc(crtc, dev)
5428 if (crtc->funcs->reset)
5429 crtc->funcs->reset(crtc);
5431 drm_for_each_encoder(encoder, dev)
5432 if (encoder->funcs->reset)
5433 encoder->funcs->reset(encoder);
5435 mutex_lock(&dev->mode_config.mutex);
5436 drm_for_each_connector(connector, dev)
5437 if (connector->funcs->reset)
5438 connector->funcs->reset(connector);
5439 mutex_unlock(&dev->mode_config.mutex);
5441 EXPORT_SYMBOL(drm_mode_config_reset);
5444 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5447 * @file_priv: DRM file info
5449 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5450 * TTM or something else entirely) and returns the resulting buffer handle. This
5451 * handle can then be wrapped up into a framebuffer modeset object.
5453 * Note that userspace is not allowed to use such objects for render
5454 * acceleration - drivers must create their own private ioctls for such a use
5457 * Called by the user via ioctl.
5460 * Zero on success, negative errno on failure.
5462 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
5463 void *data, struct drm_file *file_priv)
5465 struct drm_mode_create_dumb *args = data;
5466 u32 cpp, stride, size;
5468 if (!dev->driver->dumb_create)
5470 if (!args->width || !args->height || !args->bpp)
5473 /* overflow checks for 32bit size calculations */
5474 /* NOTE: DIV_ROUND_UP() can overflow */
5475 cpp = DIV_ROUND_UP(args->bpp, 8);
5476 if (!cpp || cpp > 0xffffffffU / args->width)
5478 stride = cpp * args->width;
5479 if (args->height > 0xffffffffU / stride)
5482 /* test for wrap-around */
5483 size = args->height * stride;
5484 if (PAGE_ALIGN(size) == 0)
5488 * handle, pitch and size are output parameters. Zero them out to
5489 * prevent drivers from accidentally using uninitialized data. Since
5490 * not all existing userspace is clearing these fields properly we
5491 * cannot reject IOCTL with garbage in them.
5497 return dev->driver->dumb_create(file_priv, dev, args);
5501 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5504 * @file_priv: DRM file info
5506 * Allocate an offset in the drm device node's address space to be able to
5507 * memory map a dumb buffer.
5509 * Called by the user via ioctl.
5512 * Zero on success, negative errno on failure.
5514 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
5515 void *data, struct drm_file *file_priv)
5517 struct drm_mode_map_dumb *args = data;
5519 /* call driver ioctl to get mmap offset */
5520 if (!dev->driver->dumb_map_offset)
5523 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
5527 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5530 * @file_priv: DRM file info
5532 * This destroys the userspace handle for the given dumb backing storage buffer.
5533 * Since buffer objects must be reference counted in the kernel a buffer object
5534 * won't be immediately freed if a framebuffer modeset object still uses it.
5536 * Called by the user via ioctl.
5539 * Zero on success, negative errno on failure.
5541 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
5542 void *data, struct drm_file *file_priv)
5544 struct drm_mode_destroy_dumb *args = data;
5546 if (!dev->driver->dumb_destroy)
5549 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
5553 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5554 * @format: pixel format (DRM_FORMAT_*)
5555 * @depth: storage for the depth value
5556 * @bpp: storage for the bpp value
5558 * This only supports RGB formats here for compat with code that doesn't use
5559 * pixel formats directly yet.
5561 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
5566 case DRM_FORMAT_RGB332:
5567 case DRM_FORMAT_BGR233:
5571 case DRM_FORMAT_XRGB1555:
5572 case DRM_FORMAT_XBGR1555:
5573 case DRM_FORMAT_RGBX5551:
5574 case DRM_FORMAT_BGRX5551:
5575 case DRM_FORMAT_ARGB1555:
5576 case DRM_FORMAT_ABGR1555:
5577 case DRM_FORMAT_RGBA5551:
5578 case DRM_FORMAT_BGRA5551:
5582 case DRM_FORMAT_RGB565:
5583 case DRM_FORMAT_BGR565:
5587 case DRM_FORMAT_RGB888:
5588 case DRM_FORMAT_BGR888:
5592 case DRM_FORMAT_XRGB8888:
5593 case DRM_FORMAT_XBGR8888:
5594 case DRM_FORMAT_RGBX8888:
5595 case DRM_FORMAT_BGRX8888:
5599 case DRM_FORMAT_XRGB2101010:
5600 case DRM_FORMAT_XBGR2101010:
5601 case DRM_FORMAT_RGBX1010102:
5602 case DRM_FORMAT_BGRX1010102:
5603 case DRM_FORMAT_ARGB2101010:
5604 case DRM_FORMAT_ABGR2101010:
5605 case DRM_FORMAT_RGBA1010102:
5606 case DRM_FORMAT_BGRA1010102:
5610 case DRM_FORMAT_ARGB8888:
5611 case DRM_FORMAT_ABGR8888:
5612 case DRM_FORMAT_RGBA8888:
5613 case DRM_FORMAT_BGRA8888:
5618 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5619 drm_get_format_name(format));
5625 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
5628 * drm_format_num_planes - get the number of planes for format
5629 * @format: pixel format (DRM_FORMAT_*)
5632 * The number of planes used by the specified pixel format.
5634 int drm_format_num_planes(uint32_t format)
5637 case DRM_FORMAT_YUV410:
5638 case DRM_FORMAT_YVU410:
5639 case DRM_FORMAT_YUV411:
5640 case DRM_FORMAT_YVU411:
5641 case DRM_FORMAT_YUV420:
5642 case DRM_FORMAT_YVU420:
5643 case DRM_FORMAT_YUV422:
5644 case DRM_FORMAT_YVU422:
5645 case DRM_FORMAT_YUV444:
5646 case DRM_FORMAT_YVU444:
5648 case DRM_FORMAT_NV12:
5649 case DRM_FORMAT_NV21:
5650 case DRM_FORMAT_NV16:
5651 case DRM_FORMAT_NV61:
5652 case DRM_FORMAT_NV24:
5653 case DRM_FORMAT_NV42:
5659 EXPORT_SYMBOL(drm_format_num_planes);
5662 * drm_format_plane_cpp - determine the bytes per pixel value
5663 * @format: pixel format (DRM_FORMAT_*)
5664 * @plane: plane index
5667 * The bytes per pixel value for the specified plane.
5669 int drm_format_plane_cpp(uint32_t format, int plane)
5674 if (plane >= drm_format_num_planes(format))
5678 case DRM_FORMAT_YUYV:
5679 case DRM_FORMAT_YVYU:
5680 case DRM_FORMAT_UYVY:
5681 case DRM_FORMAT_VYUY:
5683 case DRM_FORMAT_NV12:
5684 case DRM_FORMAT_NV21:
5685 case DRM_FORMAT_NV16:
5686 case DRM_FORMAT_NV61:
5687 case DRM_FORMAT_NV24:
5688 case DRM_FORMAT_NV42:
5689 return plane ? 2 : 1;
5690 case DRM_FORMAT_YUV410:
5691 case DRM_FORMAT_YVU410:
5692 case DRM_FORMAT_YUV411:
5693 case DRM_FORMAT_YVU411:
5694 case DRM_FORMAT_YUV420:
5695 case DRM_FORMAT_YVU420:
5696 case DRM_FORMAT_YUV422:
5697 case DRM_FORMAT_YVU422:
5698 case DRM_FORMAT_YUV444:
5699 case DRM_FORMAT_YVU444:
5702 drm_fb_get_bpp_depth(format, &depth, &bpp);
5706 EXPORT_SYMBOL(drm_format_plane_cpp);
5709 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5710 * @format: pixel format (DRM_FORMAT_*)
5713 * The horizontal chroma subsampling factor for the
5714 * specified pixel format.
5716 int drm_format_horz_chroma_subsampling(uint32_t format)
5719 case DRM_FORMAT_YUV411:
5720 case DRM_FORMAT_YVU411:
5721 case DRM_FORMAT_YUV410:
5722 case DRM_FORMAT_YVU410:
5724 case DRM_FORMAT_YUYV:
5725 case DRM_FORMAT_YVYU:
5726 case DRM_FORMAT_UYVY:
5727 case DRM_FORMAT_VYUY:
5728 case DRM_FORMAT_NV12:
5729 case DRM_FORMAT_NV21:
5730 case DRM_FORMAT_NV16:
5731 case DRM_FORMAT_NV61:
5732 case DRM_FORMAT_YUV422:
5733 case DRM_FORMAT_YVU422:
5734 case DRM_FORMAT_YUV420:
5735 case DRM_FORMAT_YVU420:
5741 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5744 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5745 * @format: pixel format (DRM_FORMAT_*)
5748 * The vertical chroma subsampling factor for the
5749 * specified pixel format.
5751 int drm_format_vert_chroma_subsampling(uint32_t format)
5754 case DRM_FORMAT_YUV410:
5755 case DRM_FORMAT_YVU410:
5757 case DRM_FORMAT_YUV420:
5758 case DRM_FORMAT_YVU420:
5759 case DRM_FORMAT_NV12:
5760 case DRM_FORMAT_NV21:
5766 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
5769 * drm_format_plane_width - width of the plane given the first plane
5770 * @width: width of the first plane
5771 * @format: pixel format
5772 * @plane: plane index
5775 * The width of @plane, given that the width of the first plane is @width.
5777 int drm_format_plane_width(int width, uint32_t format, int plane)
5779 if (plane >= drm_format_num_planes(format))
5785 return width / drm_format_horz_chroma_subsampling(format);
5787 EXPORT_SYMBOL(drm_format_plane_width);
5790 * drm_format_plane_height - height of the plane given the first plane
5791 * @height: height of the first plane
5792 * @format: pixel format
5793 * @plane: plane index
5796 * The height of @plane, given that the height of the first plane is @height.
5798 int drm_format_plane_height(int height, uint32_t format, int plane)
5800 if (plane >= drm_format_num_planes(format))
5806 return height / drm_format_vert_chroma_subsampling(format);
5808 EXPORT_SYMBOL(drm_format_plane_height);
5811 * drm_rotation_simplify() - Try to simplify the rotation
5812 * @rotation: Rotation to be simplified
5813 * @supported_rotations: Supported rotations
5815 * Attempt to simplify the rotation to a form that is supported.
5816 * Eg. if the hardware supports everything except DRM_REFLECT_X
5817 * one could call this function like this:
5819 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5820 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5821 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5823 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5824 * transforms the hardware supports, this function may not
5825 * be able to produce a supported transform, so the caller should
5826 * check the result afterwards.
5828 unsigned int drm_rotation_simplify(unsigned int rotation,
5829 unsigned int supported_rotations)
5831 if (rotation & ~supported_rotations) {
5832 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5833 rotation = (rotation & DRM_REFLECT_MASK) |
5834 BIT((ffs(rotation & DRM_ROTATE_MASK) + 1) % 4);
5839 EXPORT_SYMBOL(drm_rotation_simplify);
5842 * drm_mode_config_init - initialize DRM mode_configuration structure
5845 * Initialize @dev's mode_config structure, used for tracking the graphics
5846 * configuration of @dev.
5848 * Since this initializes the modeset locks, no locking is possible. Which is no
5849 * problem, since this should happen single threaded at init time. It is the
5850 * driver's problem to ensure this guarantee.
5853 void drm_mode_config_init(struct drm_device *dev)
5855 mutex_init(&dev->mode_config.mutex);
5856 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
5857 mutex_init(&dev->mode_config.idr_mutex);
5858 mutex_init(&dev->mode_config.fb_lock);
5859 mutex_init(&dev->mode_config.blob_lock);
5860 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5861 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5862 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5863 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5864 INIT_LIST_HEAD(&dev->mode_config.property_list);
5865 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5866 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5867 idr_init(&dev->mode_config.crtc_idr);
5868 idr_init(&dev->mode_config.tile_idr);
5869 ida_init(&dev->mode_config.connector_ida);
5871 drm_modeset_lock_all(dev);
5872 drm_mode_create_standard_properties(dev);
5873 drm_modeset_unlock_all(dev);
5875 /* Just to be sure */
5876 dev->mode_config.num_fb = 0;
5877 dev->mode_config.num_connector = 0;
5878 dev->mode_config.num_crtc = 0;
5879 dev->mode_config.num_encoder = 0;
5880 dev->mode_config.num_overlay_plane = 0;
5881 dev->mode_config.num_total_plane = 0;
5883 EXPORT_SYMBOL(drm_mode_config_init);
5886 * drm_mode_config_cleanup - free up DRM mode_config info
5889 * Free up all the connectors and CRTCs associated with this DRM device, then
5890 * free up the framebuffers and associated buffer objects.
5892 * Note that since this /should/ happen single-threaded at driver/device
5893 * teardown time, no locking is required. It's the driver's job to ensure that
5894 * this guarantee actually holds true.
5896 * FIXME: cleanup any dangling user buffer objects too
5898 void drm_mode_config_cleanup(struct drm_device *dev)
5900 struct drm_connector *connector, *ot;
5901 struct drm_crtc *crtc, *ct;
5902 struct drm_encoder *encoder, *enct;
5903 struct drm_framebuffer *fb, *fbt;
5904 struct drm_property *property, *pt;
5905 struct drm_property_blob *blob, *bt;
5906 struct drm_plane *plane, *plt;
5908 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5910 encoder->funcs->destroy(encoder);
5913 list_for_each_entry_safe(connector, ot,
5914 &dev->mode_config.connector_list, head) {
5915 connector->funcs->destroy(connector);
5918 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5920 drm_property_destroy(dev, property);
5923 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5925 plane->funcs->destroy(plane);
5928 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5929 crtc->funcs->destroy(crtc);
5932 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5934 drm_property_unreference_blob(blob);
5938 * Single-threaded teardown context, so it's not required to grab the
5939 * fb_lock to protect against concurrent fb_list access. Contrary, it
5940 * would actually deadlock with the drm_framebuffer_cleanup function.
5942 * Also, if there are any framebuffers left, that's a driver leak now,
5943 * so politely WARN about this.
5945 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5946 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5947 drm_framebuffer_free(&fb->base.refcount);
5950 ida_destroy(&dev->mode_config.connector_ida);
5951 idr_destroy(&dev->mode_config.tile_idr);
5952 idr_destroy(&dev->mode_config.crtc_idr);
5953 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
5955 EXPORT_SYMBOL(drm_mode_config_cleanup);
5957 struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5958 unsigned int supported_rotations)
5960 static const struct drm_prop_enum_list props[] = {
5961 { DRM_ROTATE_0, "rotate-0" },
5962 { DRM_ROTATE_90, "rotate-90" },
5963 { DRM_ROTATE_180, "rotate-180" },
5964 { DRM_ROTATE_270, "rotate-270" },
5965 { DRM_REFLECT_X, "reflect-x" },
5966 { DRM_REFLECT_Y, "reflect-y" },
5969 return drm_property_create_bitmask(dev, 0, "rotation",
5970 props, ARRAY_SIZE(props),
5971 supported_rotations);
5973 EXPORT_SYMBOL(drm_mode_create_rotation_property);
5978 * Tile groups are used to represent tiled monitors with a unique
5979 * integer identifier. Tiled monitors using DisplayID v1.3 have
5980 * a unique 8-byte handle, we store this in a tile group, so we
5981 * have a common identifier for all tiles in a monitor group.
5983 static void drm_tile_group_free(struct kref *kref)
5985 struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
5986 struct drm_device *dev = tg->dev;
5987 mutex_lock(&dev->mode_config.idr_mutex);
5988 idr_remove(&dev->mode_config.tile_idr, tg->id);
5989 mutex_unlock(&dev->mode_config.idr_mutex);
5994 * drm_mode_put_tile_group - drop a reference to a tile group.
5996 * @tg: tile group to drop reference to.
5998 * drop reference to tile group and free if 0.
6000 void drm_mode_put_tile_group(struct drm_device *dev,
6001 struct drm_tile_group *tg)
6003 kref_put(&tg->refcount, drm_tile_group_free);
6007 * drm_mode_get_tile_group - get a reference to an existing tile group
6009 * @topology: 8-bytes unique per monitor.
6011 * Use the unique bytes to get a reference to an existing tile group.
6014 * tile group or NULL if not found.
6016 struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
6019 struct drm_tile_group *tg;
6021 mutex_lock(&dev->mode_config.idr_mutex);
6022 idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
6023 if (!memcmp(tg->group_data, topology, 8)) {
6024 if (!kref_get_unless_zero(&tg->refcount))
6026 mutex_unlock(&dev->mode_config.idr_mutex);
6030 mutex_unlock(&dev->mode_config.idr_mutex);
6033 EXPORT_SYMBOL(drm_mode_get_tile_group);
6036 * drm_mode_create_tile_group - create a tile group from a displayid description
6038 * @topology: 8-bytes unique per monitor.
6040 * Create a tile group for the unique monitor, and get a unique
6041 * identifier for the tile group.
6044 * new tile group or error.
6046 struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
6049 struct drm_tile_group *tg;
6052 tg = kzalloc(sizeof(*tg), GFP_KERNEL);
6054 return ERR_PTR(-ENOMEM);
6056 kref_init(&tg->refcount);
6057 memcpy(tg->group_data, topology, 8);
6060 mutex_lock(&dev->mode_config.idr_mutex);
6061 ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
6069 mutex_unlock(&dev->mode_config.idr_mutex);
6072 EXPORT_SYMBOL(drm_mode_create_tile_group);