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 * This function is used to look up a modeset object. It will acquire a
384 * reference for reference counted objects. This reference must be dropped again
385 * by callind drm_mode_object_unreference().
387 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
388 uint32_t id, uint32_t type)
390 struct drm_mode_object *obj = NULL;
392 /* Framebuffers are reference counted and need their own lookup
394 WARN_ON(type == DRM_MODE_OBJECT_FB || type == DRM_MODE_OBJECT_BLOB);
395 obj = _object_find(dev, id, type);
398 EXPORT_SYMBOL(drm_mode_object_find);
401 * drm_mode_object_unreference - decr the object refcnt
404 * This functions decrements the object's refcount if it is a refcounted modeset
405 * object. It is a no-op on any other object. This is used to drop references
406 * acquired with drm_mode_object_reference().
408 void drm_mode_object_unreference(struct drm_mode_object *obj)
411 DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, atomic_read(&obj->refcount.refcount));
412 kref_put(&obj->refcount, obj->free_cb);
415 EXPORT_SYMBOL(drm_mode_object_unreference);
418 * drm_mode_object_reference - incr the object refcnt
421 * This functions increments the object's refcount if it is a refcounted modeset
422 * object. It is a no-op on any other object. References should be dropped again
423 * by calling drm_mode_object_unreference().
425 void drm_mode_object_reference(struct drm_mode_object *obj)
428 DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, atomic_read(&obj->refcount.refcount));
429 kref_get(&obj->refcount);
432 EXPORT_SYMBOL(drm_mode_object_reference);
434 static void drm_framebuffer_free(struct kref *kref)
436 struct drm_framebuffer *fb =
437 container_of(kref, struct drm_framebuffer, base.refcount);
438 struct drm_device *dev = fb->dev;
441 * The lookup idr holds a weak reference, which has not necessarily been
442 * removed at this point. Check for that.
444 drm_mode_object_unregister(dev, &fb->base);
446 fb->funcs->destroy(fb);
450 * drm_framebuffer_init - initialize a framebuffer
452 * @fb: framebuffer to be initialized
453 * @funcs: ... with these functions
455 * Allocates an ID for the framebuffer's parent mode object, sets its mode
456 * functions & device file and adds it to the master fd list.
459 * This functions publishes the fb and makes it available for concurrent access
460 * by other users. Which means by this point the fb _must_ be fully set up -
461 * since all the fb attributes are invariant over its lifetime, no further
462 * locking but only correct reference counting is required.
465 * Zero on success, error code on failure.
467 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
468 const struct drm_framebuffer_funcs *funcs)
472 INIT_LIST_HEAD(&fb->filp_head);
476 ret = drm_mode_object_get_reg(dev, &fb->base, DRM_MODE_OBJECT_FB,
477 false, drm_framebuffer_free);
481 mutex_lock(&dev->mode_config.fb_lock);
482 dev->mode_config.num_fb++;
483 list_add(&fb->head, &dev->mode_config.fb_list);
484 mutex_unlock(&dev->mode_config.fb_lock);
486 drm_mode_object_register(dev, &fb->base);
490 EXPORT_SYMBOL(drm_framebuffer_init);
493 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
495 * @id: id of the fb object
497 * If successful, this grabs an additional reference to the framebuffer -
498 * callers need to make sure to eventually unreference the returned framebuffer
499 * again, using @drm_framebuffer_unreference.
501 struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
504 struct drm_mode_object *obj;
505 struct drm_framebuffer *fb = NULL;
507 obj = _object_find(dev, id, DRM_MODE_OBJECT_FB);
512 EXPORT_SYMBOL(drm_framebuffer_lookup);
515 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
516 * @fb: fb to unregister
518 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
519 * those used for fbdev. Note that the caller must hold a reference of it's own,
520 * i.e. the object may not be destroyed through this call (since it'll lead to a
521 * locking inversion).
523 void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
525 struct drm_device *dev;
532 /* Mark fb as reaped and drop idr ref. */
533 drm_mode_object_unregister(dev, &fb->base);
535 EXPORT_SYMBOL(drm_framebuffer_unregister_private);
538 * drm_framebuffer_cleanup - remove a framebuffer object
539 * @fb: framebuffer to remove
541 * Cleanup framebuffer. This function is intended to be used from the drivers
542 * ->destroy callback. It can also be used to clean up driver private
543 * framebuffers embedded into a larger structure.
545 * Note that this function does not remove the fb from active usuage - if it is
546 * still used anywhere, hilarity can ensue since userspace could call getfb on
547 * the id and get back -EINVAL. Obviously no concern at driver unload time.
549 * Also, the framebuffer will not be removed from the lookup idr - for
550 * user-created framebuffers this will happen in in the rmfb ioctl. For
551 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
552 * drm_framebuffer_unregister_private.
554 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
556 struct drm_device *dev = fb->dev;
558 mutex_lock(&dev->mode_config.fb_lock);
560 dev->mode_config.num_fb--;
561 mutex_unlock(&dev->mode_config.fb_lock);
563 EXPORT_SYMBOL(drm_framebuffer_cleanup);
566 * drm_framebuffer_remove - remove and unreference a framebuffer object
567 * @fb: framebuffer to remove
569 * Scans all the CRTCs and planes in @dev's mode_config. If they're
570 * using @fb, removes it, setting it to NULL. Then drops the reference to the
571 * passed-in framebuffer. Might take the modeset locks.
573 * Note that this function optimizes the cleanup away if the caller holds the
574 * last reference to the framebuffer. It is also guaranteed to not take the
575 * modeset locks in this case.
577 void drm_framebuffer_remove(struct drm_framebuffer *fb)
579 struct drm_device *dev;
580 struct drm_crtc *crtc;
581 struct drm_plane *plane;
582 struct drm_mode_set set;
590 WARN_ON(!list_empty(&fb->filp_head));
593 * drm ABI mandates that we remove any deleted framebuffers from active
594 * useage. But since most sane clients only remove framebuffers they no
595 * longer need, try to optimize this away.
597 * Since we're holding a reference ourselves, observing a refcount of 1
598 * means that we're the last holder and can skip it. Also, the refcount
599 * can never increase from 1 again, so we don't need any barriers or
602 * Note that userspace could try to race with use and instate a new
603 * usage _after_ we've cleared all current ones. End result will be an
604 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
607 if (drm_framebuffer_read_refcount(fb) > 1) {
608 drm_modeset_lock_all(dev);
609 /* remove from any CRTC */
610 drm_for_each_crtc(crtc, dev) {
611 if (crtc->primary->fb == fb) {
612 /* should turn off the crtc */
613 memset(&set, 0, sizeof(struct drm_mode_set));
616 ret = drm_mode_set_config_internal(&set);
618 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
622 drm_for_each_plane(plane, dev) {
624 drm_plane_force_disable(plane);
626 drm_modeset_unlock_all(dev);
629 drm_framebuffer_unreference(fb);
631 EXPORT_SYMBOL(drm_framebuffer_remove);
633 DEFINE_WW_CLASS(crtc_ww_class);
635 static unsigned int drm_num_crtcs(struct drm_device *dev)
637 unsigned int num = 0;
638 struct drm_crtc *tmp;
640 drm_for_each_crtc(tmp, dev) {
648 * drm_crtc_init_with_planes - Initialise a new CRTC object with
649 * specified primary and cursor planes.
651 * @crtc: CRTC object to init
652 * @primary: Primary plane for CRTC
653 * @cursor: Cursor plane for CRTC
654 * @funcs: callbacks for the new CRTC
655 * @name: printf style format string for the CRTC name, or NULL for default name
657 * Inits a new object created as base part of a driver crtc object.
660 * Zero on success, error code on failure.
662 int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
663 struct drm_plane *primary,
664 struct drm_plane *cursor,
665 const struct drm_crtc_funcs *funcs,
666 const char *name, ...)
668 struct drm_mode_config *config = &dev->mode_config;
671 WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY);
672 WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR);
677 drm_modeset_lock_init(&crtc->mutex);
678 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
686 crtc->name = kvasprintf(GFP_KERNEL, name, ap);
689 crtc->name = kasprintf(GFP_KERNEL, "crtc-%d",
693 drm_mode_object_unregister(dev, &crtc->base);
697 crtc->base.properties = &crtc->properties;
699 list_add_tail(&crtc->head, &config->crtc_list);
702 crtc->primary = primary;
703 crtc->cursor = cursor;
705 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
707 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
709 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
710 drm_object_attach_property(&crtc->base, config->prop_active, 0);
711 drm_object_attach_property(&crtc->base, config->prop_mode_id, 0);
716 EXPORT_SYMBOL(drm_crtc_init_with_planes);
719 * drm_crtc_cleanup - Clean up the core crtc usage
720 * @crtc: CRTC to cleanup
722 * This function cleans up @crtc and removes it from the DRM mode setting
723 * core. Note that the function does *not* free the crtc structure itself,
724 * this is the responsibility of the caller.
726 void drm_crtc_cleanup(struct drm_crtc *crtc)
728 struct drm_device *dev = crtc->dev;
730 kfree(crtc->gamma_store);
731 crtc->gamma_store = NULL;
733 drm_modeset_lock_fini(&crtc->mutex);
735 drm_mode_object_unregister(dev, &crtc->base);
736 list_del(&crtc->head);
737 dev->mode_config.num_crtc--;
739 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
740 if (crtc->state && crtc->funcs->atomic_destroy_state)
741 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
745 memset(crtc, 0, sizeof(*crtc));
747 EXPORT_SYMBOL(drm_crtc_cleanup);
750 * drm_crtc_index - find the index of a registered CRTC
751 * @crtc: CRTC to find index for
753 * Given a registered CRTC, return the index of that CRTC within a DRM
754 * device's list of CRTCs.
756 unsigned int drm_crtc_index(struct drm_crtc *crtc)
758 unsigned int index = 0;
759 struct drm_crtc *tmp;
761 drm_for_each_crtc(tmp, crtc->dev) {
770 EXPORT_SYMBOL(drm_crtc_index);
773 * drm_mode_remove - remove and free a mode
774 * @connector: connector list to modify
775 * @mode: mode to remove
777 * Remove @mode from @connector's mode list, then free it.
779 static void drm_mode_remove(struct drm_connector *connector,
780 struct drm_display_mode *mode)
782 list_del(&mode->head);
783 drm_mode_destroy(connector->dev, mode);
787 * drm_display_info_set_bus_formats - set the supported bus formats
788 * @info: display info to store bus formats in
789 * @formats: array containing the supported bus formats
790 * @num_formats: the number of entries in the fmts array
792 * Store the supported bus formats in display info structure.
793 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
794 * a full list of available formats.
796 int drm_display_info_set_bus_formats(struct drm_display_info *info,
798 unsigned int num_formats)
802 if (!formats && num_formats)
805 if (formats && num_formats) {
806 fmts = kmemdup(formats, sizeof(*formats) * num_formats,
812 kfree(info->bus_formats);
813 info->bus_formats = fmts;
814 info->num_bus_formats = num_formats;
818 EXPORT_SYMBOL(drm_display_info_set_bus_formats);
821 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
822 * @connector: connector to quwery
824 * The kernel supports per-connector configration of its consoles through
825 * use of the video= parameter. This function parses that option and
826 * extracts the user's specified mode (or enable/disable status) for a
827 * particular connector. This is typically only used during the early fbdev
830 static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
832 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
835 if (fb_get_options(connector->name, &option))
838 if (!drm_mode_parse_command_line_for_connector(option,
846 switch (mode->force) {
850 case DRM_FORCE_ON_DIGITAL:
859 DRM_INFO("forcing %s connector %s\n", connector->name, s);
860 connector->force = mode->force;
863 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
865 mode->xres, mode->yres,
866 mode->refresh_specified ? mode->refresh : 60,
867 mode->rb ? " reduced blanking" : "",
868 mode->margins ? " with margins" : "",
869 mode->interlace ? " interlaced" : "");
873 * drm_connector_init - Init a preallocated connector
875 * @connector: the connector to init
876 * @funcs: callbacks for this connector
877 * @connector_type: user visible type of the connector
879 * Initialises a preallocated connector. Connectors should be
880 * subclassed as part of driver connector objects.
883 * Zero on success, error code on failure.
885 int drm_connector_init(struct drm_device *dev,
886 struct drm_connector *connector,
887 const struct drm_connector_funcs *funcs,
890 struct drm_mode_config *config = &dev->mode_config;
892 struct ida *connector_ida =
893 &drm_connector_enum_list[connector_type].ida;
895 drm_modeset_lock_all(dev);
897 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false, NULL);
901 connector->base.properties = &connector->properties;
902 connector->dev = dev;
903 connector->funcs = funcs;
905 connector->connector_id = ida_simple_get(&config->connector_ida, 0, 0, GFP_KERNEL);
906 if (connector->connector_id < 0) {
907 ret = connector->connector_id;
911 connector->connector_type = connector_type;
912 connector->connector_type_id =
913 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
914 if (connector->connector_type_id < 0) {
915 ret = connector->connector_type_id;
919 kasprintf(GFP_KERNEL, "%s-%d",
920 drm_connector_enum_list[connector_type].name,
921 connector->connector_type_id);
922 if (!connector->name) {
924 goto out_put_type_id;
927 INIT_LIST_HEAD(&connector->probed_modes);
928 INIT_LIST_HEAD(&connector->modes);
929 connector->edid_blob_ptr = NULL;
930 connector->status = connector_status_unknown;
932 drm_connector_get_cmdline_mode(connector);
934 /* We should add connectors at the end to avoid upsetting the connector
936 list_add_tail(&connector->head, &config->connector_list);
937 config->num_connector++;
939 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
940 drm_object_attach_property(&connector->base,
941 config->edid_property,
944 drm_object_attach_property(&connector->base,
945 config->dpms_property, 0);
947 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
948 drm_object_attach_property(&connector->base, config->prop_crtc_id, 0);
951 connector->debugfs_entry = NULL;
954 ida_remove(connector_ida, connector->connector_type_id);
957 ida_remove(&config->connector_ida, connector->connector_id);
960 drm_mode_object_unregister(dev, &connector->base);
963 drm_modeset_unlock_all(dev);
967 EXPORT_SYMBOL(drm_connector_init);
970 * drm_connector_cleanup - cleans up an initialised connector
971 * @connector: connector to cleanup
973 * Cleans up the connector but doesn't free the object.
975 void drm_connector_cleanup(struct drm_connector *connector)
977 struct drm_device *dev = connector->dev;
978 struct drm_display_mode *mode, *t;
980 if (connector->tile_group) {
981 drm_mode_put_tile_group(dev, connector->tile_group);
982 connector->tile_group = NULL;
985 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
986 drm_mode_remove(connector, mode);
988 list_for_each_entry_safe(mode, t, &connector->modes, head)
989 drm_mode_remove(connector, mode);
991 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
992 connector->connector_type_id);
994 ida_remove(&dev->mode_config.connector_ida,
995 connector->connector_id);
997 kfree(connector->display_info.bus_formats);
998 drm_mode_object_unregister(dev, &connector->base);
999 kfree(connector->name);
1000 connector->name = NULL;
1001 list_del(&connector->head);
1002 dev->mode_config.num_connector--;
1004 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
1005 if (connector->state && connector->funcs->atomic_destroy_state)
1006 connector->funcs->atomic_destroy_state(connector,
1009 memset(connector, 0, sizeof(*connector));
1011 EXPORT_SYMBOL(drm_connector_cleanup);
1014 * drm_connector_register - register a connector
1015 * @connector: the connector to register
1017 * Register userspace interfaces for a connector
1020 * Zero on success, error code on failure.
1022 int drm_connector_register(struct drm_connector *connector)
1026 drm_mode_object_register(connector->dev, &connector->base);
1028 ret = drm_sysfs_connector_add(connector);
1032 ret = drm_debugfs_connector_add(connector);
1034 drm_sysfs_connector_remove(connector);
1040 EXPORT_SYMBOL(drm_connector_register);
1043 * drm_connector_unregister - unregister a connector
1044 * @connector: the connector to unregister
1046 * Unregister userspace interfaces for a connector
1048 void drm_connector_unregister(struct drm_connector *connector)
1050 drm_sysfs_connector_remove(connector);
1051 drm_debugfs_connector_remove(connector);
1053 EXPORT_SYMBOL(drm_connector_unregister);
1056 * drm_connector_register_all - register all connectors
1059 * This function registers all connectors in sysfs and other places so that
1060 * userspace can start to access them. Drivers can call it after calling
1061 * drm_dev_register() to complete the device registration, if they don't call
1062 * drm_connector_register() on each connector individually.
1064 * When a device is unplugged and should be removed from userspace access,
1065 * call drm_connector_unregister_all(), which is the inverse of this
1069 * Zero on success, error code on failure.
1071 int drm_connector_register_all(struct drm_device *dev)
1073 struct drm_connector *connector;
1076 mutex_lock(&dev->mode_config.mutex);
1078 drm_for_each_connector(connector, dev) {
1079 ret = drm_connector_register(connector);
1084 mutex_unlock(&dev->mode_config.mutex);
1089 mutex_unlock(&dev->mode_config.mutex);
1090 drm_connector_unregister_all(dev);
1093 EXPORT_SYMBOL(drm_connector_register_all);
1096 * drm_connector_unregister_all - unregister connector userspace interfaces
1099 * This functions unregisters all connectors from sysfs and other places so
1100 * that userspace can no longer access them. Drivers should call this as the
1101 * first step tearing down the device instace, or when the underlying
1102 * physical device disappeared (e.g. USB unplug), right before calling
1103 * drm_dev_unregister().
1105 void drm_connector_unregister_all(struct drm_device *dev)
1107 struct drm_connector *connector;
1109 /* FIXME: taking the mode config mutex ends up in a clash with sysfs */
1110 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1111 drm_connector_unregister(connector);
1113 EXPORT_SYMBOL(drm_connector_unregister_all);
1116 * drm_encoder_init - Init a preallocated encoder
1118 * @encoder: the encoder to init
1119 * @funcs: callbacks for this encoder
1120 * @encoder_type: user visible type of the encoder
1121 * @name: printf style format string for the encoder name, or NULL for default name
1123 * Initialises a preallocated encoder. Encoder should be
1124 * subclassed as part of driver encoder objects.
1127 * Zero on success, error code on failure.
1129 int drm_encoder_init(struct drm_device *dev,
1130 struct drm_encoder *encoder,
1131 const struct drm_encoder_funcs *funcs,
1132 int encoder_type, const char *name, ...)
1136 drm_modeset_lock_all(dev);
1138 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1143 encoder->encoder_type = encoder_type;
1144 encoder->funcs = funcs;
1149 encoder->name = kvasprintf(GFP_KERNEL, name, ap);
1152 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1153 drm_encoder_enum_list[encoder_type].name,
1156 if (!encoder->name) {
1161 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1162 dev->mode_config.num_encoder++;
1166 drm_mode_object_unregister(dev, &encoder->base);
1169 drm_modeset_unlock_all(dev);
1173 EXPORT_SYMBOL(drm_encoder_init);
1176 * drm_encoder_index - find the index of a registered encoder
1177 * @encoder: encoder to find index for
1179 * Given a registered encoder, return the index of that encoder within a DRM
1180 * device's list of encoders.
1182 unsigned int drm_encoder_index(struct drm_encoder *encoder)
1184 unsigned int index = 0;
1185 struct drm_encoder *tmp;
1187 drm_for_each_encoder(tmp, encoder->dev) {
1196 EXPORT_SYMBOL(drm_encoder_index);
1199 * drm_encoder_cleanup - cleans up an initialised encoder
1200 * @encoder: encoder to cleanup
1202 * Cleans up the encoder but doesn't free the object.
1204 void drm_encoder_cleanup(struct drm_encoder *encoder)
1206 struct drm_device *dev = encoder->dev;
1208 drm_modeset_lock_all(dev);
1209 drm_mode_object_unregister(dev, &encoder->base);
1210 kfree(encoder->name);
1211 list_del(&encoder->head);
1212 dev->mode_config.num_encoder--;
1213 drm_modeset_unlock_all(dev);
1215 memset(encoder, 0, sizeof(*encoder));
1217 EXPORT_SYMBOL(drm_encoder_cleanup);
1219 static unsigned int drm_num_planes(struct drm_device *dev)
1221 unsigned int num = 0;
1222 struct drm_plane *tmp;
1224 drm_for_each_plane(tmp, dev) {
1232 * drm_universal_plane_init - Initialize a new universal plane object
1234 * @plane: plane object to init
1235 * @possible_crtcs: bitmask of possible CRTCs
1236 * @funcs: callbacks for the new plane
1237 * @formats: array of supported formats (%DRM_FORMAT_*)
1238 * @format_count: number of elements in @formats
1239 * @type: type of plane (overlay, primary, cursor)
1240 * @name: printf style format string for the plane name, or NULL for default name
1242 * Initializes a plane object of type @type.
1245 * Zero on success, error code on failure.
1247 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1248 unsigned long possible_crtcs,
1249 const struct drm_plane_funcs *funcs,
1250 const uint32_t *formats, unsigned int format_count,
1251 enum drm_plane_type type,
1252 const char *name, ...)
1254 struct drm_mode_config *config = &dev->mode_config;
1257 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1261 drm_modeset_lock_init(&plane->mutex);
1263 plane->base.properties = &plane->properties;
1265 plane->funcs = funcs;
1266 plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
1268 if (!plane->format_types) {
1269 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1270 drm_mode_object_unregister(dev, &plane->base);
1278 plane->name = kvasprintf(GFP_KERNEL, name, ap);
1281 plane->name = kasprintf(GFP_KERNEL, "plane-%d",
1282 drm_num_planes(dev));
1285 kfree(plane->format_types);
1286 drm_mode_object_unregister(dev, &plane->base);
1290 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1291 plane->format_count = format_count;
1292 plane->possible_crtcs = possible_crtcs;
1295 list_add_tail(&plane->head, &config->plane_list);
1296 config->num_total_plane++;
1297 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1298 config->num_overlay_plane++;
1300 drm_object_attach_property(&plane->base,
1301 config->plane_type_property,
1304 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
1305 drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
1306 drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
1307 drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
1308 drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
1309 drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
1310 drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
1311 drm_object_attach_property(&plane->base, config->prop_src_x, 0);
1312 drm_object_attach_property(&plane->base, config->prop_src_y, 0);
1313 drm_object_attach_property(&plane->base, config->prop_src_w, 0);
1314 drm_object_attach_property(&plane->base, config->prop_src_h, 0);
1319 EXPORT_SYMBOL(drm_universal_plane_init);
1322 * drm_plane_init - Initialize a legacy plane
1324 * @plane: plane object to init
1325 * @possible_crtcs: bitmask of possible CRTCs
1326 * @funcs: callbacks for the new plane
1327 * @formats: array of supported formats (%DRM_FORMAT_*)
1328 * @format_count: number of elements in @formats
1329 * @is_primary: plane type (primary vs overlay)
1331 * Legacy API to initialize a DRM plane.
1333 * New drivers should call drm_universal_plane_init() instead.
1336 * Zero on success, error code on failure.
1338 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1339 unsigned long possible_crtcs,
1340 const struct drm_plane_funcs *funcs,
1341 const uint32_t *formats, unsigned int format_count,
1344 enum drm_plane_type type;
1346 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1347 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1348 formats, format_count, type, NULL);
1350 EXPORT_SYMBOL(drm_plane_init);
1353 * drm_plane_cleanup - Clean up the core plane usage
1354 * @plane: plane to cleanup
1356 * This function cleans up @plane and removes it from the DRM mode setting
1357 * core. Note that the function does *not* free the plane structure itself,
1358 * this is the responsibility of the caller.
1360 void drm_plane_cleanup(struct drm_plane *plane)
1362 struct drm_device *dev = plane->dev;
1364 drm_modeset_lock_all(dev);
1365 kfree(plane->format_types);
1366 drm_mode_object_unregister(dev, &plane->base);
1368 BUG_ON(list_empty(&plane->head));
1370 list_del(&plane->head);
1371 dev->mode_config.num_total_plane--;
1372 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1373 dev->mode_config.num_overlay_plane--;
1374 drm_modeset_unlock_all(dev);
1376 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1377 if (plane->state && plane->funcs->atomic_destroy_state)
1378 plane->funcs->atomic_destroy_state(plane, plane->state);
1382 memset(plane, 0, sizeof(*plane));
1384 EXPORT_SYMBOL(drm_plane_cleanup);
1387 * drm_plane_index - find the index of a registered plane
1388 * @plane: plane to find index for
1390 * Given a registered plane, return the index of that CRTC within a DRM
1391 * device's list of planes.
1393 unsigned int drm_plane_index(struct drm_plane *plane)
1395 unsigned int index = 0;
1396 struct drm_plane *tmp;
1398 drm_for_each_plane(tmp, plane->dev) {
1407 EXPORT_SYMBOL(drm_plane_index);
1410 * drm_plane_from_index - find the registered plane at an index
1412 * @idx: index of registered plane to find for
1414 * Given a plane index, return the registered plane from DRM device's
1415 * list of planes with matching index.
1418 drm_plane_from_index(struct drm_device *dev, int idx)
1420 struct drm_plane *plane;
1423 drm_for_each_plane(plane, dev) {
1430 EXPORT_SYMBOL(drm_plane_from_index);
1433 * drm_plane_force_disable - Forcibly disable a plane
1434 * @plane: plane to disable
1436 * Forces the plane to be disabled.
1438 * Used when the plane's current framebuffer is destroyed,
1439 * and when restoring fbdev mode.
1441 void drm_plane_force_disable(struct drm_plane *plane)
1448 plane->old_fb = plane->fb;
1449 ret = plane->funcs->disable_plane(plane);
1451 DRM_ERROR("failed to disable plane with busy fb\n");
1452 plane->old_fb = NULL;
1455 /* disconnect the plane from the fb and crtc: */
1456 drm_framebuffer_unreference(plane->old_fb);
1457 plane->old_fb = NULL;
1461 EXPORT_SYMBOL(drm_plane_force_disable);
1463 static int drm_mode_create_standard_properties(struct drm_device *dev)
1465 struct drm_property *prop;
1468 * Standard properties (apply to all connectors)
1470 prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1471 DRM_MODE_PROP_IMMUTABLE,
1475 dev->mode_config.edid_property = prop;
1477 prop = drm_property_create_enum(dev, 0,
1478 "DPMS", drm_dpms_enum_list,
1479 ARRAY_SIZE(drm_dpms_enum_list));
1482 dev->mode_config.dpms_property = prop;
1484 prop = drm_property_create(dev,
1485 DRM_MODE_PROP_BLOB |
1486 DRM_MODE_PROP_IMMUTABLE,
1490 dev->mode_config.path_property = prop;
1492 prop = drm_property_create(dev,
1493 DRM_MODE_PROP_BLOB |
1494 DRM_MODE_PROP_IMMUTABLE,
1498 dev->mode_config.tile_property = prop;
1500 prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1501 "type", drm_plane_type_enum_list,
1502 ARRAY_SIZE(drm_plane_type_enum_list));
1505 dev->mode_config.plane_type_property = prop;
1507 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1508 "SRC_X", 0, UINT_MAX);
1511 dev->mode_config.prop_src_x = prop;
1513 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1514 "SRC_Y", 0, UINT_MAX);
1517 dev->mode_config.prop_src_y = prop;
1519 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1520 "SRC_W", 0, UINT_MAX);
1523 dev->mode_config.prop_src_w = prop;
1525 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1526 "SRC_H", 0, UINT_MAX);
1529 dev->mode_config.prop_src_h = prop;
1531 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1532 "CRTC_X", INT_MIN, INT_MAX);
1535 dev->mode_config.prop_crtc_x = prop;
1537 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1538 "CRTC_Y", INT_MIN, INT_MAX);
1541 dev->mode_config.prop_crtc_y = prop;
1543 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1544 "CRTC_W", 0, INT_MAX);
1547 dev->mode_config.prop_crtc_w = prop;
1549 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1550 "CRTC_H", 0, INT_MAX);
1553 dev->mode_config.prop_crtc_h = prop;
1555 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1556 "FB_ID", DRM_MODE_OBJECT_FB);
1559 dev->mode_config.prop_fb_id = prop;
1561 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1562 "CRTC_ID", DRM_MODE_OBJECT_CRTC);
1565 dev->mode_config.prop_crtc_id = prop;
1567 prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
1571 dev->mode_config.prop_active = prop;
1573 prop = drm_property_create(dev,
1574 DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB,
1578 dev->mode_config.prop_mode_id = prop;
1580 prop = drm_property_create(dev,
1585 dev->mode_config.degamma_lut_property = prop;
1587 prop = drm_property_create_range(dev,
1588 DRM_MODE_PROP_IMMUTABLE,
1589 "DEGAMMA_LUT_SIZE", 0, UINT_MAX);
1592 dev->mode_config.degamma_lut_size_property = prop;
1594 prop = drm_property_create(dev,
1599 dev->mode_config.ctm_property = prop;
1601 prop = drm_property_create(dev,
1606 dev->mode_config.gamma_lut_property = prop;
1608 prop = drm_property_create_range(dev,
1609 DRM_MODE_PROP_IMMUTABLE,
1610 "GAMMA_LUT_SIZE", 0, UINT_MAX);
1613 dev->mode_config.gamma_lut_size_property = prop;
1619 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1622 * Called by a driver the first time a DVI-I connector is made.
1624 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1626 struct drm_property *dvi_i_selector;
1627 struct drm_property *dvi_i_subconnector;
1629 if (dev->mode_config.dvi_i_select_subconnector_property)
1633 drm_property_create_enum(dev, 0,
1634 "select subconnector",
1635 drm_dvi_i_select_enum_list,
1636 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1637 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1639 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1641 drm_dvi_i_subconnector_enum_list,
1642 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1643 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1647 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1650 * drm_create_tv_properties - create TV specific connector properties
1652 * @num_modes: number of different TV formats (modes) supported
1653 * @modes: array of pointers to strings containing name of each format
1655 * Called by a driver's TV initialization routine, this function creates
1656 * the TV specific connector properties for a given device. Caller is
1657 * responsible for allocating a list of format names and passing them to
1660 int drm_mode_create_tv_properties(struct drm_device *dev,
1661 unsigned int num_modes,
1662 const char * const modes[])
1664 struct drm_property *tv_selector;
1665 struct drm_property *tv_subconnector;
1668 if (dev->mode_config.tv_select_subconnector_property)
1672 * Basic connector properties
1674 tv_selector = drm_property_create_enum(dev, 0,
1675 "select subconnector",
1676 drm_tv_select_enum_list,
1677 ARRAY_SIZE(drm_tv_select_enum_list));
1681 dev->mode_config.tv_select_subconnector_property = tv_selector;
1684 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1686 drm_tv_subconnector_enum_list,
1687 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1688 if (!tv_subconnector)
1690 dev->mode_config.tv_subconnector_property = tv_subconnector;
1693 * Other, TV specific properties: margins & TV modes.
1695 dev->mode_config.tv_left_margin_property =
1696 drm_property_create_range(dev, 0, "left margin", 0, 100);
1697 if (!dev->mode_config.tv_left_margin_property)
1700 dev->mode_config.tv_right_margin_property =
1701 drm_property_create_range(dev, 0, "right margin", 0, 100);
1702 if (!dev->mode_config.tv_right_margin_property)
1705 dev->mode_config.tv_top_margin_property =
1706 drm_property_create_range(dev, 0, "top margin", 0, 100);
1707 if (!dev->mode_config.tv_top_margin_property)
1710 dev->mode_config.tv_bottom_margin_property =
1711 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1712 if (!dev->mode_config.tv_bottom_margin_property)
1715 dev->mode_config.tv_mode_property =
1716 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1718 if (!dev->mode_config.tv_mode_property)
1721 for (i = 0; i < num_modes; i++)
1722 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1725 dev->mode_config.tv_brightness_property =
1726 drm_property_create_range(dev, 0, "brightness", 0, 100);
1727 if (!dev->mode_config.tv_brightness_property)
1730 dev->mode_config.tv_contrast_property =
1731 drm_property_create_range(dev, 0, "contrast", 0, 100);
1732 if (!dev->mode_config.tv_contrast_property)
1735 dev->mode_config.tv_flicker_reduction_property =
1736 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1737 if (!dev->mode_config.tv_flicker_reduction_property)
1740 dev->mode_config.tv_overscan_property =
1741 drm_property_create_range(dev, 0, "overscan", 0, 100);
1742 if (!dev->mode_config.tv_overscan_property)
1745 dev->mode_config.tv_saturation_property =
1746 drm_property_create_range(dev, 0, "saturation", 0, 100);
1747 if (!dev->mode_config.tv_saturation_property)
1750 dev->mode_config.tv_hue_property =
1751 drm_property_create_range(dev, 0, "hue", 0, 100);
1752 if (!dev->mode_config.tv_hue_property)
1759 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1762 * drm_mode_create_scaling_mode_property - create scaling mode property
1765 * Called by a driver the first time it's needed, must be attached to desired
1768 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1770 struct drm_property *scaling_mode;
1772 if (dev->mode_config.scaling_mode_property)
1776 drm_property_create_enum(dev, 0, "scaling mode",
1777 drm_scaling_mode_enum_list,
1778 ARRAY_SIZE(drm_scaling_mode_enum_list));
1780 dev->mode_config.scaling_mode_property = scaling_mode;
1784 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1787 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1790 * Called by a driver the first time it's needed, must be attached to desired
1794 * Zero on success, negative errno on failure.
1796 int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1798 if (dev->mode_config.aspect_ratio_property)
1801 dev->mode_config.aspect_ratio_property =
1802 drm_property_create_enum(dev, 0, "aspect ratio",
1803 drm_aspect_ratio_enum_list,
1804 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1806 if (dev->mode_config.aspect_ratio_property == NULL)
1811 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1814 * drm_mode_create_dirty_property - create dirty property
1817 * Called by a driver the first time it's needed, must be attached to desired
1820 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1822 struct drm_property *dirty_info;
1824 if (dev->mode_config.dirty_info_property)
1828 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1830 drm_dirty_info_enum_list,
1831 ARRAY_SIZE(drm_dirty_info_enum_list));
1832 dev->mode_config.dirty_info_property = dirty_info;
1836 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1839 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1842 * Create the the suggested x/y offset property for connectors.
1844 int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1846 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1849 dev->mode_config.suggested_x_property =
1850 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1852 dev->mode_config.suggested_y_property =
1853 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1855 if (dev->mode_config.suggested_x_property == NULL ||
1856 dev->mode_config.suggested_y_property == NULL)
1860 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1863 * drm_mode_getresources - get graphics configuration
1864 * @dev: drm device for the ioctl
1865 * @data: data pointer for the ioctl
1866 * @file_priv: drm file for the ioctl call
1868 * Construct a set of configuration description structures and return
1869 * them to the user, including CRTC, connector and framebuffer configuration.
1871 * Called by the user via ioctl.
1874 * Zero on success, negative errno on failure.
1876 int drm_mode_getresources(struct drm_device *dev, void *data,
1877 struct drm_file *file_priv)
1879 struct drm_mode_card_res *card_res = data;
1880 struct list_head *lh;
1881 struct drm_framebuffer *fb;
1882 struct drm_connector *connector;
1883 struct drm_crtc *crtc;
1884 struct drm_encoder *encoder;
1886 int connector_count = 0;
1889 int encoder_count = 0;
1891 uint32_t __user *fb_id;
1892 uint32_t __user *crtc_id;
1893 uint32_t __user *connector_id;
1894 uint32_t __user *encoder_id;
1896 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1900 mutex_lock(&file_priv->fbs_lock);
1902 * For the non-control nodes we need to limit the list of resources
1903 * by IDs in the group list for this node
1905 list_for_each(lh, &file_priv->fbs)
1908 /* handle this in 4 parts */
1910 if (card_res->count_fbs >= fb_count) {
1912 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1913 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1914 if (put_user(fb->base.id, fb_id + copied)) {
1915 mutex_unlock(&file_priv->fbs_lock);
1921 card_res->count_fbs = fb_count;
1922 mutex_unlock(&file_priv->fbs_lock);
1924 /* mode_config.mutex protects the connector list against e.g. DP MST
1925 * connector hot-adding. CRTC/Plane lists are invariant. */
1926 mutex_lock(&dev->mode_config.mutex);
1927 drm_for_each_crtc(crtc, dev)
1930 drm_for_each_connector(connector, dev)
1933 drm_for_each_encoder(encoder, dev)
1936 card_res->max_height = dev->mode_config.max_height;
1937 card_res->min_height = dev->mode_config.min_height;
1938 card_res->max_width = dev->mode_config.max_width;
1939 card_res->min_width = dev->mode_config.min_width;
1942 if (card_res->count_crtcs >= crtc_count) {
1944 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1945 drm_for_each_crtc(crtc, dev) {
1946 DRM_DEBUG_KMS("[CRTC:%d:%s]\n",
1947 crtc->base.id, crtc->name);
1948 if (put_user(crtc->base.id, crtc_id + copied)) {
1955 card_res->count_crtcs = crtc_count;
1958 if (card_res->count_encoders >= encoder_count) {
1960 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1961 drm_for_each_encoder(encoder, dev) {
1962 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1964 if (put_user(encoder->base.id, encoder_id +
1972 card_res->count_encoders = encoder_count;
1975 if (card_res->count_connectors >= connector_count) {
1977 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1978 drm_for_each_connector(connector, dev) {
1979 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1982 if (put_user(connector->base.id,
1983 connector_id + copied)) {
1990 card_res->count_connectors = connector_count;
1992 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1993 card_res->count_connectors, card_res->count_encoders);
1996 mutex_unlock(&dev->mode_config.mutex);
2001 * drm_mode_getcrtc - get CRTC configuration
2002 * @dev: drm device for the ioctl
2003 * @data: data pointer for the ioctl
2004 * @file_priv: drm file for the ioctl call
2006 * Construct a CRTC configuration structure to return to the user.
2008 * Called by the user via ioctl.
2011 * Zero on success, negative errno on failure.
2013 int drm_mode_getcrtc(struct drm_device *dev,
2014 void *data, struct drm_file *file_priv)
2016 struct drm_mode_crtc *crtc_resp = data;
2017 struct drm_crtc *crtc;
2019 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2022 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
2026 drm_modeset_lock_crtc(crtc, crtc->primary);
2027 crtc_resp->gamma_size = crtc->gamma_size;
2028 if (crtc->primary->fb)
2029 crtc_resp->fb_id = crtc->primary->fb->base.id;
2031 crtc_resp->fb_id = 0;
2034 crtc_resp->x = crtc->primary->state->src_x >> 16;
2035 crtc_resp->y = crtc->primary->state->src_y >> 16;
2036 if (crtc->state->enable) {
2037 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode);
2038 crtc_resp->mode_valid = 1;
2041 crtc_resp->mode_valid = 0;
2044 crtc_resp->x = crtc->x;
2045 crtc_resp->y = crtc->y;
2046 if (crtc->enabled) {
2047 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode);
2048 crtc_resp->mode_valid = 1;
2051 crtc_resp->mode_valid = 0;
2054 drm_modeset_unlock_crtc(crtc);
2059 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
2060 const struct drm_file *file_priv)
2063 * If user-space hasn't configured the driver to expose the stereo 3D
2064 * modes, don't expose them.
2066 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
2072 static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
2074 /* For atomic drivers only state objects are synchronously updated and
2075 * protected by modeset locks, so check those first. */
2076 if (connector->state)
2077 return connector->state->best_encoder;
2078 return connector->encoder;
2081 /* helper for getconnector and getproperties ioctls */
2082 static int get_properties(struct drm_mode_object *obj, bool atomic,
2083 uint32_t __user *prop_ptr, uint64_t __user *prop_values,
2084 uint32_t *arg_count_props)
2089 props_count = obj->properties->count;
2091 props_count -= obj->properties->atomic_count;
2093 if ((*arg_count_props >= props_count) && props_count) {
2094 for (i = 0, copied = 0; copied < props_count; i++) {
2095 struct drm_property *prop = obj->properties->properties[i];
2098 if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
2101 ret = drm_object_property_get_value(obj, prop, &val);
2105 if (put_user(prop->base.id, prop_ptr + copied))
2108 if (put_user(val, prop_values + copied))
2114 *arg_count_props = props_count;
2120 * drm_mode_getconnector - get connector configuration
2121 * @dev: drm device for the ioctl
2122 * @data: data pointer for the ioctl
2123 * @file_priv: drm file for the ioctl call
2125 * Construct a connector configuration structure to return to the user.
2127 * Called by the user via ioctl.
2130 * Zero on success, negative errno on failure.
2132 int drm_mode_getconnector(struct drm_device *dev, void *data,
2133 struct drm_file *file_priv)
2135 struct drm_mode_get_connector *out_resp = data;
2136 struct drm_connector *connector;
2137 struct drm_encoder *encoder;
2138 struct drm_display_mode *mode;
2140 int encoders_count = 0;
2144 struct drm_mode_modeinfo u_mode;
2145 struct drm_mode_modeinfo __user *mode_ptr;
2146 uint32_t __user *encoder_ptr;
2148 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2151 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
2153 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
2155 mutex_lock(&dev->mode_config.mutex);
2157 connector = drm_connector_find(dev, out_resp->connector_id);
2163 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
2164 if (connector->encoder_ids[i] != 0)
2167 if (out_resp->count_modes == 0) {
2168 connector->funcs->fill_modes(connector,
2169 dev->mode_config.max_width,
2170 dev->mode_config.max_height);
2173 /* delayed so we get modes regardless of pre-fill_modes state */
2174 list_for_each_entry(mode, &connector->modes, head)
2175 if (drm_mode_expose_to_userspace(mode, file_priv))
2178 out_resp->connector_id = connector->base.id;
2179 out_resp->connector_type = connector->connector_type;
2180 out_resp->connector_type_id = connector->connector_type_id;
2181 out_resp->mm_width = connector->display_info.width_mm;
2182 out_resp->mm_height = connector->display_info.height_mm;
2183 out_resp->subpixel = connector->display_info.subpixel_order;
2184 out_resp->connection = connector->status;
2186 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2187 encoder = drm_connector_get_encoder(connector);
2189 out_resp->encoder_id = encoder->base.id;
2191 out_resp->encoder_id = 0;
2194 * This ioctl is called twice, once to determine how much space is
2195 * needed, and the 2nd time to fill it.
2197 if ((out_resp->count_modes >= mode_count) && mode_count) {
2199 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
2200 list_for_each_entry(mode, &connector->modes, head) {
2201 if (!drm_mode_expose_to_userspace(mode, file_priv))
2204 drm_mode_convert_to_umode(&u_mode, mode);
2205 if (copy_to_user(mode_ptr + copied,
2206 &u_mode, sizeof(u_mode))) {
2213 out_resp->count_modes = mode_count;
2215 ret = get_properties(&connector->base, file_priv->atomic,
2216 (uint32_t __user *)(unsigned long)(out_resp->props_ptr),
2217 (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr),
2218 &out_resp->count_props);
2222 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2224 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
2225 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2226 if (connector->encoder_ids[i] != 0) {
2227 if (put_user(connector->encoder_ids[i],
2228 encoder_ptr + copied)) {
2236 out_resp->count_encoders = encoders_count;
2239 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2242 mutex_unlock(&dev->mode_config.mutex);
2247 static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2249 struct drm_connector *connector;
2250 struct drm_device *dev = encoder->dev;
2251 bool uses_atomic = false;
2253 /* For atomic drivers only state objects are synchronously updated and
2254 * protected by modeset locks, so check those first. */
2255 drm_for_each_connector(connector, dev) {
2256 if (!connector->state)
2261 if (connector->state->best_encoder != encoder)
2264 return connector->state->crtc;
2267 /* Don't return stale data (e.g. pending async disable). */
2271 return encoder->crtc;
2275 * drm_mode_getencoder - get encoder configuration
2276 * @dev: drm device for the ioctl
2277 * @data: data pointer for the ioctl
2278 * @file_priv: drm file for the ioctl call
2280 * Construct a encoder configuration structure to return to the user.
2282 * Called by the user via ioctl.
2285 * Zero on success, negative errno on failure.
2287 int drm_mode_getencoder(struct drm_device *dev, void *data,
2288 struct drm_file *file_priv)
2290 struct drm_mode_get_encoder *enc_resp = data;
2291 struct drm_encoder *encoder;
2292 struct drm_crtc *crtc;
2294 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2297 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
2301 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2302 crtc = drm_encoder_get_crtc(encoder);
2304 enc_resp->crtc_id = crtc->base.id;
2306 enc_resp->crtc_id = 0;
2307 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2309 enc_resp->encoder_type = encoder->encoder_type;
2310 enc_resp->encoder_id = encoder->base.id;
2311 enc_resp->possible_crtcs = encoder->possible_crtcs;
2312 enc_resp->possible_clones = encoder->possible_clones;
2318 * drm_mode_getplane_res - enumerate all plane resources
2321 * @file_priv: DRM file info
2323 * Construct a list of plane ids to return to the user.
2325 * Called by the user via ioctl.
2328 * Zero on success, negative errno on failure.
2330 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2331 struct drm_file *file_priv)
2333 struct drm_mode_get_plane_res *plane_resp = data;
2334 struct drm_mode_config *config;
2335 struct drm_plane *plane;
2336 uint32_t __user *plane_ptr;
2338 unsigned num_planes;
2340 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2343 config = &dev->mode_config;
2345 if (file_priv->universal_planes)
2346 num_planes = config->num_total_plane;
2348 num_planes = config->num_overlay_plane;
2351 * This ioctl is called twice, once to determine how much space is
2352 * needed, and the 2nd time to fill it.
2355 (plane_resp->count_planes >= num_planes)) {
2356 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2358 /* Plane lists are invariant, no locking needed. */
2359 drm_for_each_plane(plane, dev) {
2361 * Unless userspace set the 'universal planes'
2362 * capability bit, only advertise overlays.
2364 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2365 !file_priv->universal_planes)
2368 if (put_user(plane->base.id, plane_ptr + copied))
2373 plane_resp->count_planes = num_planes;
2379 * drm_mode_getplane - get plane configuration
2382 * @file_priv: DRM file info
2384 * Construct a plane configuration structure to return to the user.
2386 * Called by the user via ioctl.
2389 * Zero on success, negative errno on failure.
2391 int drm_mode_getplane(struct drm_device *dev, void *data,
2392 struct drm_file *file_priv)
2394 struct drm_mode_get_plane *plane_resp = data;
2395 struct drm_plane *plane;
2396 uint32_t __user *format_ptr;
2398 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2401 plane = drm_plane_find(dev, plane_resp->plane_id);
2405 drm_modeset_lock(&plane->mutex, NULL);
2407 plane_resp->crtc_id = plane->crtc->base.id;
2409 plane_resp->crtc_id = 0;
2412 plane_resp->fb_id = plane->fb->base.id;
2414 plane_resp->fb_id = 0;
2415 drm_modeset_unlock(&plane->mutex);
2417 plane_resp->plane_id = plane->base.id;
2418 plane_resp->possible_crtcs = plane->possible_crtcs;
2419 plane_resp->gamma_size = 0;
2422 * This ioctl is called twice, once to determine how much space is
2423 * needed, and the 2nd time to fill it.
2425 if (plane->format_count &&
2426 (plane_resp->count_format_types >= plane->format_count)) {
2427 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2428 if (copy_to_user(format_ptr,
2429 plane->format_types,
2430 sizeof(uint32_t) * plane->format_count)) {
2434 plane_resp->count_format_types = plane->format_count;
2440 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2441 * @plane: plane to check for format support
2442 * @format: the pixel format
2445 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2448 int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format)
2452 for (i = 0; i < plane->format_count; i++) {
2453 if (format == plane->format_types[i])
2460 static int check_src_coords(uint32_t src_x, uint32_t src_y,
2461 uint32_t src_w, uint32_t src_h,
2462 const struct drm_framebuffer *fb)
2464 unsigned int fb_width, fb_height;
2466 fb_width = fb->width << 16;
2467 fb_height = fb->height << 16;
2469 /* Make sure source coordinates are inside the fb. */
2470 if (src_w > fb_width ||
2471 src_x > fb_width - src_w ||
2472 src_h > fb_height ||
2473 src_y > fb_height - src_h) {
2474 DRM_DEBUG_KMS("Invalid source coordinates "
2475 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2476 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2477 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2478 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2479 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2487 * setplane_internal - setplane handler for internal callers
2489 * Note that we assume an extra reference has already been taken on fb. If the
2490 * update fails, this reference will be dropped before return; if it succeeds,
2491 * the previous framebuffer (if any) will be unreferenced instead.
2493 * src_{x,y,w,h} are provided in 16.16 fixed point format
2495 static int __setplane_internal(struct drm_plane *plane,
2496 struct drm_crtc *crtc,
2497 struct drm_framebuffer *fb,
2498 int32_t crtc_x, int32_t crtc_y,
2499 uint32_t crtc_w, uint32_t crtc_h,
2500 /* src_{x,y,w,h} values are 16.16 fixed point */
2501 uint32_t src_x, uint32_t src_y,
2502 uint32_t src_w, uint32_t src_h)
2506 /* No fb means shut it down */
2508 plane->old_fb = plane->fb;
2509 ret = plane->funcs->disable_plane(plane);
2514 plane->old_fb = NULL;
2519 /* Check whether this plane is usable on this CRTC */
2520 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2521 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2526 /* Check whether this plane supports the fb pixel format. */
2527 ret = drm_plane_check_pixel_format(plane, fb->pixel_format);
2529 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2530 drm_get_format_name(fb->pixel_format));
2534 /* Give drivers some help against integer overflows */
2535 if (crtc_w > INT_MAX ||
2536 crtc_x > INT_MAX - (int32_t) crtc_w ||
2538 crtc_y > INT_MAX - (int32_t) crtc_h) {
2539 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2540 crtc_w, crtc_h, crtc_x, crtc_y);
2545 ret = check_src_coords(src_x, src_y, src_w, src_h, fb);
2549 plane->old_fb = plane->fb;
2550 ret = plane->funcs->update_plane(plane, crtc, fb,
2551 crtc_x, crtc_y, crtc_w, crtc_h,
2552 src_x, src_y, src_w, src_h);
2558 plane->old_fb = NULL;
2563 drm_framebuffer_unreference(fb);
2565 drm_framebuffer_unreference(plane->old_fb);
2566 plane->old_fb = NULL;
2571 static int setplane_internal(struct drm_plane *plane,
2572 struct drm_crtc *crtc,
2573 struct drm_framebuffer *fb,
2574 int32_t crtc_x, int32_t crtc_y,
2575 uint32_t crtc_w, uint32_t crtc_h,
2576 /* src_{x,y,w,h} values are 16.16 fixed point */
2577 uint32_t src_x, uint32_t src_y,
2578 uint32_t src_w, uint32_t src_h)
2582 drm_modeset_lock_all(plane->dev);
2583 ret = __setplane_internal(plane, crtc, fb,
2584 crtc_x, crtc_y, crtc_w, crtc_h,
2585 src_x, src_y, src_w, src_h);
2586 drm_modeset_unlock_all(plane->dev);
2592 * drm_mode_setplane - configure a plane's configuration
2594 * @data: ioctl data*
2595 * @file_priv: DRM file info
2597 * Set plane configuration, including placement, fb, scaling, and other factors.
2598 * Or pass a NULL fb to disable (planes may be disabled without providing a
2602 * Zero on success, negative errno on failure.
2604 int drm_mode_setplane(struct drm_device *dev, void *data,
2605 struct drm_file *file_priv)
2607 struct drm_mode_set_plane *plane_req = data;
2608 struct drm_plane *plane;
2609 struct drm_crtc *crtc = NULL;
2610 struct drm_framebuffer *fb = NULL;
2612 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2616 * First, find the plane, crtc, and fb objects. If not available,
2617 * we don't bother to call the driver.
2619 plane = drm_plane_find(dev, plane_req->plane_id);
2621 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2622 plane_req->plane_id);
2626 if (plane_req->fb_id) {
2627 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2629 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2634 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2636 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2637 plane_req->crtc_id);
2643 * setplane_internal will take care of deref'ing either the old or new
2644 * framebuffer depending on success.
2646 return setplane_internal(plane, crtc, fb,
2647 plane_req->crtc_x, plane_req->crtc_y,
2648 plane_req->crtc_w, plane_req->crtc_h,
2649 plane_req->src_x, plane_req->src_y,
2650 plane_req->src_w, plane_req->src_h);
2654 * drm_mode_set_config_internal - helper to call ->set_config
2655 * @set: modeset config to set
2657 * This is a little helper to wrap internal calls to the ->set_config driver
2658 * interface. The only thing it adds is correct refcounting dance.
2661 * Zero on success, negative errno on failure.
2663 int drm_mode_set_config_internal(struct drm_mode_set *set)
2665 struct drm_crtc *crtc = set->crtc;
2666 struct drm_framebuffer *fb;
2667 struct drm_crtc *tmp;
2671 * NOTE: ->set_config can also disable other crtcs (if we steal all
2672 * connectors from it), hence we need to refcount the fbs across all
2673 * crtcs. Atomic modeset will have saner semantics ...
2675 drm_for_each_crtc(tmp, crtc->dev)
2676 tmp->primary->old_fb = tmp->primary->fb;
2680 ret = crtc->funcs->set_config(set);
2682 crtc->primary->crtc = crtc;
2683 crtc->primary->fb = fb;
2686 drm_for_each_crtc(tmp, crtc->dev) {
2687 if (tmp->primary->fb)
2688 drm_framebuffer_reference(tmp->primary->fb);
2689 if (tmp->primary->old_fb)
2690 drm_framebuffer_unreference(tmp->primary->old_fb);
2691 tmp->primary->old_fb = NULL;
2696 EXPORT_SYMBOL(drm_mode_set_config_internal);
2699 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2700 * @mode: mode to query
2701 * @hdisplay: hdisplay value to fill in
2702 * @vdisplay: vdisplay value to fill in
2704 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2705 * the appropriate layout.
2707 void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
2708 int *hdisplay, int *vdisplay)
2710 struct drm_display_mode adjusted;
2712 drm_mode_copy(&adjusted, mode);
2713 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
2714 *hdisplay = adjusted.crtc_hdisplay;
2715 *vdisplay = adjusted.crtc_vdisplay;
2717 EXPORT_SYMBOL(drm_crtc_get_hv_timing);
2720 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2722 * @crtc: CRTC that framebuffer will be displayed on
2725 * @mode: mode that framebuffer will be displayed under
2726 * @fb: framebuffer to check size of
2728 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2730 const struct drm_display_mode *mode,
2731 const struct drm_framebuffer *fb)
2734 int hdisplay, vdisplay;
2736 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
2739 crtc->primary->state->rotation & (BIT(DRM_ROTATE_90) |
2740 BIT(DRM_ROTATE_270)))
2741 swap(hdisplay, vdisplay);
2743 return check_src_coords(x << 16, y << 16,
2744 hdisplay << 16, vdisplay << 16, fb);
2746 EXPORT_SYMBOL(drm_crtc_check_viewport);
2749 * drm_mode_setcrtc - set CRTC configuration
2750 * @dev: drm device for the ioctl
2751 * @data: data pointer for the ioctl
2752 * @file_priv: drm file for the ioctl call
2754 * Build a new CRTC configuration based on user request.
2756 * Called by the user via ioctl.
2759 * Zero on success, negative errno on failure.
2761 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2762 struct drm_file *file_priv)
2764 struct drm_mode_config *config = &dev->mode_config;
2765 struct drm_mode_crtc *crtc_req = data;
2766 struct drm_crtc *crtc;
2767 struct drm_connector **connector_set = NULL, *connector;
2768 struct drm_framebuffer *fb = NULL;
2769 struct drm_display_mode *mode = NULL;
2770 struct drm_mode_set set;
2771 uint32_t __user *set_connectors_ptr;
2775 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2779 * Universal plane src offsets are only 16.16, prevent havoc for
2780 * drivers using universal plane code internally.
2782 if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000)
2785 drm_modeset_lock_all(dev);
2786 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2788 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2792 DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name);
2794 if (crtc_req->mode_valid) {
2795 /* If we have a mode we need a framebuffer. */
2796 /* If we pass -1, set the mode with the currently bound fb */
2797 if (crtc_req->fb_id == -1) {
2798 if (!crtc->primary->fb) {
2799 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2803 fb = crtc->primary->fb;
2804 /* Make refcounting symmetric with the lookup path. */
2805 drm_framebuffer_reference(fb);
2807 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2809 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2816 mode = drm_mode_create(dev);
2822 ret = drm_mode_convert_umode(mode, &crtc_req->mode);
2824 DRM_DEBUG_KMS("Invalid mode\n");
2828 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2831 * Check whether the primary plane supports the fb pixel format.
2832 * Drivers not implementing the universal planes API use a
2833 * default formats list provided by the DRM core which doesn't
2834 * match real hardware capabilities. Skip the check in that
2837 if (!crtc->primary->format_default) {
2838 ret = drm_plane_check_pixel_format(crtc->primary,
2841 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2842 drm_get_format_name(fb->pixel_format));
2847 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2854 if (crtc_req->count_connectors == 0 && mode) {
2855 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2860 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2861 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2862 crtc_req->count_connectors);
2867 if (crtc_req->count_connectors > 0) {
2870 /* Avoid unbounded kernel memory allocation */
2871 if (crtc_req->count_connectors > config->num_connector) {
2876 connector_set = kmalloc_array(crtc_req->count_connectors,
2877 sizeof(struct drm_connector *),
2879 if (!connector_set) {
2884 for (i = 0; i < crtc_req->count_connectors; i++) {
2885 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2886 if (get_user(out_id, &set_connectors_ptr[i])) {
2891 connector = drm_connector_find(dev, out_id);
2893 DRM_DEBUG_KMS("Connector id %d unknown\n",
2898 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2902 connector_set[i] = connector;
2907 set.x = crtc_req->x;
2908 set.y = crtc_req->y;
2910 set.connectors = connector_set;
2911 set.num_connectors = crtc_req->count_connectors;
2913 ret = drm_mode_set_config_internal(&set);
2917 drm_framebuffer_unreference(fb);
2919 kfree(connector_set);
2920 drm_mode_destroy(dev, mode);
2921 drm_modeset_unlock_all(dev);
2926 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2927 * universal plane handler call
2928 * @crtc: crtc to update cursor for
2929 * @req: data pointer for the ioctl
2930 * @file_priv: drm file for the ioctl call
2932 * Legacy cursor ioctl's work directly with driver buffer handles. To
2933 * translate legacy ioctl calls into universal plane handler calls, we need to
2934 * wrap the native buffer handle in a drm_framebuffer.
2936 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2937 * buffer with a pitch of 4*width; the universal plane interface should be used
2938 * directly in cases where the hardware can support other buffer settings and
2939 * userspace wants to make use of these capabilities.
2942 * Zero on success, negative errno on failure.
2944 static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2945 struct drm_mode_cursor2 *req,
2946 struct drm_file *file_priv)
2948 struct drm_device *dev = crtc->dev;
2949 struct drm_framebuffer *fb = NULL;
2950 struct drm_mode_fb_cmd2 fbreq = {
2951 .width = req->width,
2952 .height = req->height,
2953 .pixel_format = DRM_FORMAT_ARGB8888,
2954 .pitches = { req->width * 4 },
2955 .handles = { req->handle },
2957 int32_t crtc_x, crtc_y;
2958 uint32_t crtc_w = 0, crtc_h = 0;
2959 uint32_t src_w = 0, src_h = 0;
2962 BUG_ON(!crtc->cursor);
2963 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
2966 * Obtain fb we'll be using (either new or existing) and take an extra
2967 * reference to it if fb != null. setplane will take care of dropping
2968 * the reference if the plane update fails.
2970 if (req->flags & DRM_MODE_CURSOR_BO) {
2972 fb = internal_framebuffer_create(dev, &fbreq, file_priv);
2974 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2981 fb = crtc->cursor->fb;
2983 drm_framebuffer_reference(fb);
2986 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2990 crtc_x = crtc->cursor_x;
2991 crtc_y = crtc->cursor_y;
2996 crtc_h = fb->height;
2997 src_w = fb->width << 16;
2998 src_h = fb->height << 16;
3002 * setplane_internal will take care of deref'ing either the old or new
3003 * framebuffer depending on success.
3005 ret = __setplane_internal(crtc->cursor, crtc, fb,
3006 crtc_x, crtc_y, crtc_w, crtc_h,
3007 0, 0, src_w, src_h);
3009 /* Update successful; save new cursor position, if necessary */
3010 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
3011 crtc->cursor_x = req->x;
3012 crtc->cursor_y = req->y;
3018 static int drm_mode_cursor_common(struct drm_device *dev,
3019 struct drm_mode_cursor2 *req,
3020 struct drm_file *file_priv)
3022 struct drm_crtc *crtc;
3025 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3028 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
3031 crtc = drm_crtc_find(dev, req->crtc_id);
3033 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
3038 * If this crtc has a universal cursor plane, call that plane's update
3039 * handler rather than using legacy cursor handlers.
3041 drm_modeset_lock_crtc(crtc, crtc->cursor);
3043 ret = drm_mode_cursor_universal(crtc, req, file_priv);
3047 if (req->flags & DRM_MODE_CURSOR_BO) {
3048 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
3052 /* Turns off the cursor if handle is 0 */
3053 if (crtc->funcs->cursor_set2)
3054 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
3055 req->width, req->height, req->hot_x, req->hot_y);
3057 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
3058 req->width, req->height);
3061 if (req->flags & DRM_MODE_CURSOR_MOVE) {
3062 if (crtc->funcs->cursor_move) {
3063 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
3070 drm_modeset_unlock_crtc(crtc);
3078 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
3079 * @dev: drm device for the ioctl
3080 * @data: data pointer for the ioctl
3081 * @file_priv: drm file for the ioctl call
3083 * Set the cursor configuration based on user request.
3085 * Called by the user via ioctl.
3088 * Zero on success, negative errno on failure.
3090 int drm_mode_cursor_ioctl(struct drm_device *dev,
3091 void *data, struct drm_file *file_priv)
3093 struct drm_mode_cursor *req = data;
3094 struct drm_mode_cursor2 new_req;
3096 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
3097 new_req.hot_x = new_req.hot_y = 0;
3099 return drm_mode_cursor_common(dev, &new_req, file_priv);
3103 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3104 * @dev: drm device for the ioctl
3105 * @data: data pointer for the ioctl
3106 * @file_priv: drm file for the ioctl call
3108 * Set the cursor configuration based on user request. This implements the 2nd
3109 * version of the cursor ioctl, which allows userspace to additionally specify
3110 * the hotspot of the pointer.
3112 * Called by the user via ioctl.
3115 * Zero on success, negative errno on failure.
3117 int drm_mode_cursor2_ioctl(struct drm_device *dev,
3118 void *data, struct drm_file *file_priv)
3120 struct drm_mode_cursor2 *req = data;
3122 return drm_mode_cursor_common(dev, req, file_priv);
3126 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3127 * @bpp: bits per pixels
3128 * @depth: bit depth per pixel
3130 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3131 * Useful in fbdev emulation code, since that deals in those values.
3133 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
3139 fmt = DRM_FORMAT_C8;
3143 fmt = DRM_FORMAT_XRGB1555;
3145 fmt = DRM_FORMAT_RGB565;
3148 fmt = DRM_FORMAT_RGB888;
3152 fmt = DRM_FORMAT_XRGB8888;
3153 else if (depth == 30)
3154 fmt = DRM_FORMAT_XRGB2101010;
3156 fmt = DRM_FORMAT_ARGB8888;
3159 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3160 fmt = DRM_FORMAT_XRGB8888;
3166 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3169 * drm_mode_addfb - add an FB to the graphics configuration
3170 * @dev: drm device for the ioctl
3171 * @data: data pointer for the ioctl
3172 * @file_priv: drm file for the ioctl call
3174 * Add a new FB to the specified CRTC, given a user request. This is the
3175 * original addfb ioctl which only supported RGB formats.
3177 * Called by the user via ioctl.
3180 * Zero on success, negative errno on failure.
3182 int drm_mode_addfb(struct drm_device *dev,
3183 void *data, struct drm_file *file_priv)
3185 struct drm_mode_fb_cmd *or = data;
3186 struct drm_mode_fb_cmd2 r = {};
3189 /* convert to new format and call new ioctl */
3190 r.fb_id = or->fb_id;
3191 r.width = or->width;
3192 r.height = or->height;
3193 r.pitches[0] = or->pitch;
3194 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3195 r.handles[0] = or->handle;
3197 ret = drm_mode_addfb2(dev, &r, file_priv);
3201 or->fb_id = r.fb_id;
3206 static int format_check(const struct drm_mode_fb_cmd2 *r)
3208 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3212 case DRM_FORMAT_RGB332:
3213 case DRM_FORMAT_BGR233:
3214 case DRM_FORMAT_XRGB4444:
3215 case DRM_FORMAT_XBGR4444:
3216 case DRM_FORMAT_RGBX4444:
3217 case DRM_FORMAT_BGRX4444:
3218 case DRM_FORMAT_ARGB4444:
3219 case DRM_FORMAT_ABGR4444:
3220 case DRM_FORMAT_RGBA4444:
3221 case DRM_FORMAT_BGRA4444:
3222 case DRM_FORMAT_XRGB1555:
3223 case DRM_FORMAT_XBGR1555:
3224 case DRM_FORMAT_RGBX5551:
3225 case DRM_FORMAT_BGRX5551:
3226 case DRM_FORMAT_ARGB1555:
3227 case DRM_FORMAT_ABGR1555:
3228 case DRM_FORMAT_RGBA5551:
3229 case DRM_FORMAT_BGRA5551:
3230 case DRM_FORMAT_RGB565:
3231 case DRM_FORMAT_BGR565:
3232 case DRM_FORMAT_RGB888:
3233 case DRM_FORMAT_BGR888:
3234 case DRM_FORMAT_XRGB8888:
3235 case DRM_FORMAT_XBGR8888:
3236 case DRM_FORMAT_RGBX8888:
3237 case DRM_FORMAT_BGRX8888:
3238 case DRM_FORMAT_ARGB8888:
3239 case DRM_FORMAT_ABGR8888:
3240 case DRM_FORMAT_RGBA8888:
3241 case DRM_FORMAT_BGRA8888:
3242 case DRM_FORMAT_XRGB2101010:
3243 case DRM_FORMAT_XBGR2101010:
3244 case DRM_FORMAT_RGBX1010102:
3245 case DRM_FORMAT_BGRX1010102:
3246 case DRM_FORMAT_ARGB2101010:
3247 case DRM_FORMAT_ABGR2101010:
3248 case DRM_FORMAT_RGBA1010102:
3249 case DRM_FORMAT_BGRA1010102:
3250 case DRM_FORMAT_YUYV:
3251 case DRM_FORMAT_YVYU:
3252 case DRM_FORMAT_UYVY:
3253 case DRM_FORMAT_VYUY:
3254 case DRM_FORMAT_AYUV:
3255 case DRM_FORMAT_NV12:
3256 case DRM_FORMAT_NV21:
3257 case DRM_FORMAT_NV16:
3258 case DRM_FORMAT_NV61:
3259 case DRM_FORMAT_NV24:
3260 case DRM_FORMAT_NV42:
3261 case DRM_FORMAT_YUV410:
3262 case DRM_FORMAT_YVU410:
3263 case DRM_FORMAT_YUV411:
3264 case DRM_FORMAT_YVU411:
3265 case DRM_FORMAT_YUV420:
3266 case DRM_FORMAT_YVU420:
3267 case DRM_FORMAT_YUV422:
3268 case DRM_FORMAT_YVU422:
3269 case DRM_FORMAT_YUV444:
3270 case DRM_FORMAT_YVU444:
3273 DRM_DEBUG_KMS("invalid pixel format %s\n",
3274 drm_get_format_name(r->pixel_format));
3279 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
3281 int ret, hsub, vsub, num_planes, i;
3283 ret = format_check(r);
3285 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3286 drm_get_format_name(r->pixel_format));
3290 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3291 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3292 num_planes = drm_format_num_planes(r->pixel_format);
3294 if (r->width == 0 || r->width % hsub) {
3295 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
3299 if (r->height == 0 || r->height % vsub) {
3300 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
3304 for (i = 0; i < num_planes; i++) {
3305 unsigned int width = r->width / (i != 0 ? hsub : 1);
3306 unsigned int height = r->height / (i != 0 ? vsub : 1);
3307 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
3309 if (!r->handles[i]) {
3310 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
3314 if ((uint64_t) width * cpp > UINT_MAX)
3317 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3320 if (r->pitches[i] < width * cpp) {
3321 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
3325 if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
3326 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3331 /* modifier specific checks: */
3332 switch (r->modifier[i]) {
3333 case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE:
3334 /* NOTE: the pitch restriction may be lifted later if it turns
3335 * out that no hw has this restriction:
3337 if (r->pixel_format != DRM_FORMAT_NV12 ||
3338 width % 128 || height % 32 ||
3339 r->pitches[i] % 128) {
3340 DRM_DEBUG_KMS("bad modifier data for plane %d\n", i);
3350 for (i = num_planes; i < 4; i++) {
3351 if (r->modifier[i]) {
3352 DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i);
3356 /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
3357 if (!(r->flags & DRM_MODE_FB_MODIFIERS))
3360 if (r->handles[i]) {
3361 DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i);
3365 if (r->pitches[i]) {
3366 DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i);
3370 if (r->offsets[i]) {
3371 DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i);
3379 static struct drm_framebuffer *
3380 internal_framebuffer_create(struct drm_device *dev,
3381 const struct drm_mode_fb_cmd2 *r,
3382 struct drm_file *file_priv)
3384 struct drm_mode_config *config = &dev->mode_config;
3385 struct drm_framebuffer *fb;
3388 if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
3389 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
3390 return ERR_PTR(-EINVAL);
3393 if ((config->min_width > r->width) || (r->width > config->max_width)) {
3394 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3395 r->width, config->min_width, config->max_width);
3396 return ERR_PTR(-EINVAL);
3398 if ((config->min_height > r->height) || (r->height > config->max_height)) {
3399 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3400 r->height, config->min_height, config->max_height);
3401 return ERR_PTR(-EINVAL);
3404 if (r->flags & DRM_MODE_FB_MODIFIERS &&
3405 !dev->mode_config.allow_fb_modifiers) {
3406 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3407 return ERR_PTR(-EINVAL);
3410 ret = framebuffer_check(r);
3412 return ERR_PTR(ret);
3414 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
3416 DRM_DEBUG_KMS("could not create framebuffer\n");
3424 * drm_mode_addfb2 - add an FB to the graphics configuration
3425 * @dev: drm device for the ioctl
3426 * @data: data pointer for the ioctl
3427 * @file_priv: drm file for the ioctl call
3429 * Add a new FB to the specified CRTC, given a user request with format. This is
3430 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3431 * and uses fourcc codes as pixel format specifiers.
3433 * Called by the user via ioctl.
3436 * Zero on success, negative errno on failure.
3438 int drm_mode_addfb2(struct drm_device *dev,
3439 void *data, struct drm_file *file_priv)
3441 struct drm_mode_fb_cmd2 *r = data;
3442 struct drm_framebuffer *fb;
3444 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3447 fb = internal_framebuffer_create(dev, r, file_priv);
3451 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3452 r->fb_id = fb->base.id;
3454 /* Transfer ownership to the filp for reaping on close */
3455 mutex_lock(&file_priv->fbs_lock);
3456 list_add(&fb->filp_head, &file_priv->fbs);
3457 mutex_unlock(&file_priv->fbs_lock);
3463 * drm_mode_rmfb - remove an FB from the configuration
3464 * @dev: drm device for the ioctl
3465 * @data: data pointer for the ioctl
3466 * @file_priv: drm file for the ioctl call
3468 * Remove the FB specified by the user.
3470 * Called by the user via ioctl.
3473 * Zero on success, negative errno on failure.
3475 int drm_mode_rmfb(struct drm_device *dev,
3476 void *data, struct drm_file *file_priv)
3478 struct drm_framebuffer *fb = NULL;
3479 struct drm_framebuffer *fbl = NULL;
3480 uint32_t *id = data;
3483 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3486 fb = drm_framebuffer_lookup(dev, *id);
3490 mutex_lock(&file_priv->fbs_lock);
3491 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3495 mutex_unlock(&file_priv->fbs_lock);
3499 list_del_init(&fb->filp_head);
3500 mutex_unlock(&file_priv->fbs_lock);
3502 /* we now own the reference that was stored in the fbs list */
3503 drm_framebuffer_unreference(fb);
3505 /* drop the reference we picked up in framebuffer lookup */
3506 drm_framebuffer_unreference(fb);
3511 drm_framebuffer_unreference(fb);
3516 * drm_mode_getfb - get FB info
3517 * @dev: drm device for the ioctl
3518 * @data: data pointer for the ioctl
3519 * @file_priv: drm file for the ioctl call
3521 * Lookup the FB given its ID and return info about it.
3523 * Called by the user via ioctl.
3526 * Zero on success, negative errno on failure.
3528 int drm_mode_getfb(struct drm_device *dev,
3529 void *data, struct drm_file *file_priv)
3531 struct drm_mode_fb_cmd *r = data;
3532 struct drm_framebuffer *fb;
3535 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3538 fb = drm_framebuffer_lookup(dev, r->fb_id);
3542 r->height = fb->height;
3543 r->width = fb->width;
3544 r->depth = fb->depth;
3545 r->bpp = fb->bits_per_pixel;
3546 r->pitch = fb->pitches[0];
3547 if (fb->funcs->create_handle) {
3548 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
3549 drm_is_control_client(file_priv)) {
3550 ret = fb->funcs->create_handle(fb, file_priv,
3553 /* GET_FB() is an unprivileged ioctl so we must not
3554 * return a buffer-handle to non-master processes! For
3555 * backwards-compatibility reasons, we cannot make
3556 * GET_FB() privileged, so just return an invalid handle
3557 * for non-masters. */
3565 drm_framebuffer_unreference(fb);
3571 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3572 * @dev: drm device for the ioctl
3573 * @data: data pointer for the ioctl
3574 * @file_priv: drm file for the ioctl call
3576 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3577 * rectangle list. Generic userspace which does frontbuffer rendering must call
3578 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3579 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3581 * Modesetting drivers which always update the frontbuffer do not need to
3582 * implement the corresponding ->dirty framebuffer callback.
3584 * Called by the user via ioctl.
3587 * Zero on success, negative errno on failure.
3589 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3590 void *data, struct drm_file *file_priv)
3592 struct drm_clip_rect __user *clips_ptr;
3593 struct drm_clip_rect *clips = NULL;
3594 struct drm_mode_fb_dirty_cmd *r = data;
3595 struct drm_framebuffer *fb;
3600 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3603 fb = drm_framebuffer_lookup(dev, r->fb_id);
3607 num_clips = r->num_clips;
3608 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3610 if (!num_clips != !clips_ptr) {
3615 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3617 /* If userspace annotates copy, clips must come in pairs */
3618 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3623 if (num_clips && clips_ptr) {
3624 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3628 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
3634 ret = copy_from_user(clips, clips_ptr,
3635 num_clips * sizeof(*clips));
3642 if (fb->funcs->dirty) {
3643 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3652 drm_framebuffer_unreference(fb);
3659 * drm_fb_release - remove and free the FBs on this file
3660 * @priv: drm file for the ioctl
3662 * Destroy all the FBs associated with @filp.
3664 * Called by the user via ioctl.
3667 * Zero on success, negative errno on failure.
3669 void drm_fb_release(struct drm_file *priv)
3671 struct drm_framebuffer *fb, *tfb;
3674 * When the file gets released that means no one else can access the fb
3675 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3676 * avoid upsetting lockdep since the universal cursor code adds a
3677 * framebuffer while holding mutex locks.
3679 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3680 * locks is impossible here since no one else but this function can get
3683 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3684 list_del_init(&fb->filp_head);
3686 /* This drops the fpriv->fbs reference. */
3687 drm_framebuffer_unreference(fb);
3692 * drm_property_create - create a new property type
3694 * @flags: flags specifying the property type
3695 * @name: name of the property
3696 * @num_values: number of pre-defined values
3698 * This creates a new generic drm property which can then be attached to a drm
3699 * object with drm_object_attach_property. The returned property object must be
3700 * freed with drm_property_destroy.
3702 * Note that the DRM core keeps a per-device list of properties and that, if
3703 * drm_mode_config_cleanup() is called, it will destroy all properties created
3707 * A pointer to the newly created property on success, NULL on failure.
3709 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3710 const char *name, int num_values)
3712 struct drm_property *property = NULL;
3715 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3719 property->dev = dev;
3722 property->values = kcalloc(num_values, sizeof(uint64_t),
3724 if (!property->values)
3728 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3732 property->flags = flags;
3733 property->num_values = num_values;
3734 INIT_LIST_HEAD(&property->enum_list);
3737 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3738 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3741 list_add_tail(&property->head, &dev->mode_config.property_list);
3743 WARN_ON(!drm_property_type_valid(property));
3747 kfree(property->values);
3751 EXPORT_SYMBOL(drm_property_create);
3754 * drm_property_create_enum - create a new enumeration property type
3756 * @flags: flags specifying the property type
3757 * @name: name of the property
3758 * @props: enumeration lists with property values
3759 * @num_values: number of pre-defined values
3761 * This creates a new generic drm property which can then be attached to a drm
3762 * object with drm_object_attach_property. The returned property object must be
3763 * freed with drm_property_destroy.
3765 * Userspace is only allowed to set one of the predefined values for enumeration
3769 * A pointer to the newly created property on success, NULL on failure.
3771 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3773 const struct drm_prop_enum_list *props,
3776 struct drm_property *property;
3779 flags |= DRM_MODE_PROP_ENUM;
3781 property = drm_property_create(dev, flags, name, num_values);
3785 for (i = 0; i < num_values; i++) {
3786 ret = drm_property_add_enum(property, i,
3790 drm_property_destroy(dev, property);
3797 EXPORT_SYMBOL(drm_property_create_enum);
3800 * drm_property_create_bitmask - create a new bitmask property type
3802 * @flags: flags specifying the property type
3803 * @name: name of the property
3804 * @props: enumeration lists with property bitflags
3805 * @num_props: size of the @props array
3806 * @supported_bits: bitmask of all supported enumeration values
3808 * This creates a new bitmask drm property which can then be attached to a drm
3809 * object with drm_object_attach_property. The returned property object must be
3810 * freed with drm_property_destroy.
3812 * Compared to plain enumeration properties userspace is allowed to set any
3813 * or'ed together combination of the predefined property bitflag values
3816 * A pointer to the newly created property on success, NULL on failure.
3818 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3819 int flags, const char *name,
3820 const struct drm_prop_enum_list *props,
3822 uint64_t supported_bits)
3824 struct drm_property *property;
3825 int i, ret, index = 0;
3826 int num_values = hweight64(supported_bits);
3828 flags |= DRM_MODE_PROP_BITMASK;
3830 property = drm_property_create(dev, flags, name, num_values);
3833 for (i = 0; i < num_props; i++) {
3834 if (!(supported_bits & (1ULL << props[i].type)))
3837 if (WARN_ON(index >= num_values)) {
3838 drm_property_destroy(dev, property);
3842 ret = drm_property_add_enum(property, index++,
3846 drm_property_destroy(dev, property);
3853 EXPORT_SYMBOL(drm_property_create_bitmask);
3855 static struct drm_property *property_create_range(struct drm_device *dev,
3856 int flags, const char *name,
3857 uint64_t min, uint64_t max)
3859 struct drm_property *property;
3861 property = drm_property_create(dev, flags, name, 2);
3865 property->values[0] = min;
3866 property->values[1] = max;
3872 * drm_property_create_range - create a new unsigned ranged property type
3874 * @flags: flags specifying the property type
3875 * @name: name of the property
3876 * @min: minimum value of the property
3877 * @max: maximum value of the property
3879 * This creates a new generic drm property which can then be attached to a drm
3880 * object with drm_object_attach_property. The returned property object must be
3881 * freed with drm_property_destroy.
3883 * Userspace is allowed to set any unsigned integer value in the (min, max)
3887 * A pointer to the newly created property on success, NULL on failure.
3889 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3891 uint64_t min, uint64_t max)
3893 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3896 EXPORT_SYMBOL(drm_property_create_range);
3899 * drm_property_create_signed_range - create a new signed ranged property type
3901 * @flags: flags specifying the property type
3902 * @name: name of the property
3903 * @min: minimum value of the property
3904 * @max: maximum value of the property
3906 * This creates a new generic drm property which can then be attached to a drm
3907 * object with drm_object_attach_property. The returned property object must be
3908 * freed with drm_property_destroy.
3910 * Userspace is allowed to set any signed integer value in the (min, max)
3914 * A pointer to the newly created property on success, NULL on failure.
3916 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3917 int flags, const char *name,
3918 int64_t min, int64_t max)
3920 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3921 name, I642U64(min), I642U64(max));
3923 EXPORT_SYMBOL(drm_property_create_signed_range);
3926 * drm_property_create_object - create a new object property type
3928 * @flags: flags specifying the property type
3929 * @name: name of the property
3930 * @type: object type from DRM_MODE_OBJECT_* defines
3932 * This creates a new generic drm property which can then be attached to a drm
3933 * object with drm_object_attach_property. The returned property object must be
3934 * freed with drm_property_destroy.
3936 * Userspace is only allowed to set this to any property value of the given
3937 * @type. Only useful for atomic properties, which is enforced.
3940 * A pointer to the newly created property on success, NULL on failure.
3942 struct drm_property *drm_property_create_object(struct drm_device *dev,
3943 int flags, const char *name, uint32_t type)
3945 struct drm_property *property;
3947 flags |= DRM_MODE_PROP_OBJECT;
3949 if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
3952 property = drm_property_create(dev, flags, name, 1);
3956 property->values[0] = type;
3960 EXPORT_SYMBOL(drm_property_create_object);
3963 * drm_property_create_bool - create a new boolean property type
3965 * @flags: flags specifying the property type
3966 * @name: name of the property
3968 * This creates a new generic drm property which can then be attached to a drm
3969 * object with drm_object_attach_property. The returned property object must be
3970 * freed with drm_property_destroy.
3972 * This is implemented as a ranged property with only {0, 1} as valid values.
3975 * A pointer to the newly created property on success, NULL on failure.
3977 struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
3980 return drm_property_create_range(dev, flags, name, 0, 1);
3982 EXPORT_SYMBOL(drm_property_create_bool);
3985 * drm_property_add_enum - add a possible value to an enumeration property
3986 * @property: enumeration property to change
3987 * @index: index of the new enumeration
3988 * @value: value of the new enumeration
3989 * @name: symbolic name of the new enumeration
3991 * This functions adds enumerations to a property.
3993 * It's use is deprecated, drivers should use one of the more specific helpers
3994 * to directly create the property with all enumerations already attached.
3997 * Zero on success, error code on failure.
3999 int drm_property_add_enum(struct drm_property *property, int index,
4000 uint64_t value, const char *name)
4002 struct drm_property_enum *prop_enum;
4004 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4005 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
4009 * Bitmask enum properties have the additional constraint of values
4012 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
4016 if (!list_empty(&property->enum_list)) {
4017 list_for_each_entry(prop_enum, &property->enum_list, head) {
4018 if (prop_enum->value == value) {
4019 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
4020 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
4026 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
4030 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
4031 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
4032 prop_enum->value = value;
4034 property->values[index] = value;
4035 list_add_tail(&prop_enum->head, &property->enum_list);
4038 EXPORT_SYMBOL(drm_property_add_enum);
4041 * drm_property_destroy - destroy a drm property
4043 * @property: property to destry
4045 * This function frees a property including any attached resources like
4046 * enumeration values.
4048 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
4050 struct drm_property_enum *prop_enum, *pt;
4052 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
4053 list_del(&prop_enum->head);
4057 if (property->num_values)
4058 kfree(property->values);
4059 drm_mode_object_unregister(dev, &property->base);
4060 list_del(&property->head);
4063 EXPORT_SYMBOL(drm_property_destroy);
4066 * drm_object_attach_property - attach a property to a modeset object
4067 * @obj: drm modeset object
4068 * @property: property to attach
4069 * @init_val: initial value of the property
4071 * This attaches the given property to the modeset object with the given initial
4072 * value. Currently this function cannot fail since the properties are stored in
4073 * a statically sized array.
4075 void drm_object_attach_property(struct drm_mode_object *obj,
4076 struct drm_property *property,
4079 int count = obj->properties->count;
4081 if (count == DRM_OBJECT_MAX_PROPERTY) {
4082 WARN(1, "Failed to attach object property (type: 0x%x). Please "
4083 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
4084 "you see this message on the same object type.\n",
4089 obj->properties->properties[count] = property;
4090 obj->properties->values[count] = init_val;
4091 obj->properties->count++;
4092 if (property->flags & DRM_MODE_PROP_ATOMIC)
4093 obj->properties->atomic_count++;
4095 EXPORT_SYMBOL(drm_object_attach_property);
4098 * drm_object_property_set_value - set the value of a property
4099 * @obj: drm mode object to set property value for
4100 * @property: property to set
4101 * @val: value the property should be set to
4103 * This functions sets a given property on a given object. This function only
4104 * changes the software state of the property, it does not call into the
4105 * driver's ->set_property callback.
4108 * Zero on success, error code on failure.
4110 int drm_object_property_set_value(struct drm_mode_object *obj,
4111 struct drm_property *property, uint64_t val)
4115 for (i = 0; i < obj->properties->count; i++) {
4116 if (obj->properties->properties[i] == property) {
4117 obj->properties->values[i] = val;
4124 EXPORT_SYMBOL(drm_object_property_set_value);
4127 * drm_object_property_get_value - retrieve the value of a property
4128 * @obj: drm mode object to get property value from
4129 * @property: property to retrieve
4130 * @val: storage for the property value
4132 * This function retrieves the softare state of the given property for the given
4133 * property. Since there is no driver callback to retrieve the current property
4134 * value this might be out of sync with the hardware, depending upon the driver
4138 * Zero on success, error code on failure.
4140 int drm_object_property_get_value(struct drm_mode_object *obj,
4141 struct drm_property *property, uint64_t *val)
4145 /* read-only properties bypass atomic mechanism and still store
4146 * their value in obj->properties->values[].. mostly to avoid
4147 * having to deal w/ EDID and similar props in atomic paths:
4149 if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
4150 !(property->flags & DRM_MODE_PROP_IMMUTABLE))
4151 return drm_atomic_get_property(obj, property, val);
4153 for (i = 0; i < obj->properties->count; i++) {
4154 if (obj->properties->properties[i] == property) {
4155 *val = obj->properties->values[i];
4162 EXPORT_SYMBOL(drm_object_property_get_value);
4165 * drm_mode_getproperty_ioctl - get the property metadata
4168 * @file_priv: DRM file info
4170 * This function retrieves the metadata for a given property, like the different
4171 * possible values for an enum property or the limits for a range property.
4173 * Blob properties are special
4175 * Called by the user via ioctl.
4178 * Zero on success, negative errno on failure.
4180 int drm_mode_getproperty_ioctl(struct drm_device *dev,
4181 void *data, struct drm_file *file_priv)
4183 struct drm_mode_get_property *out_resp = data;
4184 struct drm_property *property;
4186 int value_count = 0;
4189 struct drm_property_enum *prop_enum;
4190 struct drm_mode_property_enum __user *enum_ptr;
4191 uint64_t __user *values_ptr;
4193 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4196 drm_modeset_lock_all(dev);
4197 property = drm_property_find(dev, out_resp->prop_id);
4203 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4204 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4205 list_for_each_entry(prop_enum, &property->enum_list, head)
4209 value_count = property->num_values;
4211 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
4212 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
4213 out_resp->flags = property->flags;
4215 if ((out_resp->count_values >= value_count) && value_count) {
4216 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
4217 for (i = 0; i < value_count; i++) {
4218 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
4224 out_resp->count_values = value_count;
4226 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4227 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4228 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
4230 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
4231 list_for_each_entry(prop_enum, &property->enum_list, head) {
4233 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
4238 if (copy_to_user(&enum_ptr[copied].name,
4239 &prop_enum->name, DRM_PROP_NAME_LEN)) {
4246 out_resp->count_enum_blobs = enum_count;
4250 * NOTE: The idea seems to have been to use this to read all the blob
4251 * property values. But nothing ever added them to the corresponding
4252 * list, userspace always used the special-purpose get_blob ioctl to
4253 * read the value for a blob property. It also doesn't make a lot of
4254 * sense to return values here when everything else is just metadata for
4255 * the property itself.
4257 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4258 out_resp->count_enum_blobs = 0;
4260 drm_modeset_unlock_all(dev);
4265 * drm_property_create_blob - Create new blob property
4267 * Creates a new blob property for a specified DRM device, optionally
4270 * @dev: DRM device to create property for
4271 * @length: Length to allocate for blob data
4272 * @data: If specified, copies data into blob
4275 * New blob property with a single reference on success, or an ERR_PTR
4278 struct drm_property_blob *
4279 drm_property_create_blob(struct drm_device *dev, size_t length,
4282 struct drm_property_blob *blob;
4285 if (!length || length > ULONG_MAX - sizeof(struct drm_property_blob))
4286 return ERR_PTR(-EINVAL);
4288 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
4290 return ERR_PTR(-ENOMEM);
4292 /* This must be explicitly initialised, so we can safely call list_del
4293 * on it in the removal handler, even if it isn't in a file list. */
4294 INIT_LIST_HEAD(&blob->head_file);
4295 blob->length = length;
4299 memcpy(blob->data, data, length);
4301 mutex_lock(&dev->mode_config.blob_lock);
4303 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
4306 mutex_unlock(&dev->mode_config.blob_lock);
4307 return ERR_PTR(-EINVAL);
4310 kref_init(&blob->refcount);
4312 list_add_tail(&blob->head_global,
4313 &dev->mode_config.property_blob_list);
4315 mutex_unlock(&dev->mode_config.blob_lock);
4319 EXPORT_SYMBOL(drm_property_create_blob);
4322 * drm_property_free_blob - Blob property destructor
4324 * Internal free function for blob properties; must not be used directly.
4328 static void drm_property_free_blob(struct kref *kref)
4330 struct drm_property_blob *blob =
4331 container_of(kref, struct drm_property_blob, refcount);
4333 WARN_ON(!mutex_is_locked(&blob->dev->mode_config.blob_lock));
4335 list_del(&blob->head_global);
4336 list_del(&blob->head_file);
4337 drm_mode_object_unregister(blob->dev, &blob->base);
4343 * drm_property_unreference_blob - Unreference a blob property
4345 * Drop a reference on a blob property. May free the object.
4347 * @blob: Pointer to blob property
4349 void drm_property_unreference_blob(struct drm_property_blob *blob)
4351 struct drm_device *dev;
4358 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4360 if (kref_put_mutex(&blob->refcount, drm_property_free_blob,
4361 &dev->mode_config.blob_lock))
4362 mutex_unlock(&dev->mode_config.blob_lock);
4364 might_lock(&dev->mode_config.blob_lock);
4366 EXPORT_SYMBOL(drm_property_unreference_blob);
4369 * drm_property_unreference_blob_locked - Unreference a blob property with blob_lock held
4371 * Drop a reference on a blob property. May free the object. This must be
4372 * called with blob_lock held.
4374 * @blob: Pointer to blob property
4376 static void drm_property_unreference_blob_locked(struct drm_property_blob *blob)
4381 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4383 kref_put(&blob->refcount, drm_property_free_blob);
4387 * drm_property_destroy_user_blobs - destroy all blobs created by this client
4389 * @file_priv: destroy all blobs owned by this file handle
4391 void drm_property_destroy_user_blobs(struct drm_device *dev,
4392 struct drm_file *file_priv)
4394 struct drm_property_blob *blob, *bt;
4396 mutex_lock(&dev->mode_config.blob_lock);
4398 list_for_each_entry_safe(blob, bt, &file_priv->blobs, head_file) {
4399 list_del_init(&blob->head_file);
4400 drm_property_unreference_blob_locked(blob);
4403 mutex_unlock(&dev->mode_config.blob_lock);
4407 * drm_property_reference_blob - Take a reference on an existing property
4409 * Take a new reference on an existing blob property.
4411 * @blob: Pointer to blob property
4413 struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob)
4415 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4416 kref_get(&blob->refcount);
4419 EXPORT_SYMBOL(drm_property_reference_blob);
4422 * Like drm_property_lookup_blob, but does not return an additional reference.
4423 * Must be called with blob_lock held.
4425 static struct drm_property_blob *__drm_property_lookup_blob(struct drm_device *dev,
4428 struct drm_mode_object *obj = NULL;
4429 struct drm_property_blob *blob;
4431 WARN_ON(!mutex_is_locked(&dev->mode_config.blob_lock));
4433 mutex_lock(&dev->mode_config.idr_mutex);
4434 obj = idr_find(&dev->mode_config.crtc_idr, id);
4435 if (!obj || (obj->type != DRM_MODE_OBJECT_BLOB) || (obj->id != id))
4438 blob = obj_to_blob(obj);
4439 mutex_unlock(&dev->mode_config.idr_mutex);
4445 * drm_property_lookup_blob - look up a blob property and take a reference
4447 * @id: id of the blob property
4449 * If successful, this takes an additional reference to the blob property.
4450 * callers need to make sure to eventually unreference the returned property
4451 * again, using @drm_property_unreference_blob.
4453 struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
4456 struct drm_property_blob *blob;
4458 mutex_lock(&dev->mode_config.blob_lock);
4459 blob = __drm_property_lookup_blob(dev, id);
4461 if (!kref_get_unless_zero(&blob->refcount))
4464 mutex_unlock(&dev->mode_config.blob_lock);
4468 EXPORT_SYMBOL(drm_property_lookup_blob);
4471 * drm_property_replace_global_blob - atomically replace existing blob property
4473 * @replace: location of blob property pointer to be replaced
4474 * @length: length of data for new blob, or 0 for no data
4475 * @data: content for new blob, or NULL for no data
4476 * @obj_holds_id: optional object for property holding blob ID
4477 * @prop_holds_id: optional property holding blob ID
4478 * @return 0 on success or error on failure
4480 * This function will atomically replace a global property in the blob list,
4481 * optionally updating a property which holds the ID of that property. It is
4482 * guaranteed to be atomic: no caller will be allowed to see intermediate
4483 * results, and either the entire operation will succeed and clean up the
4484 * previous property, or it will fail and the state will be unchanged.
4486 * If length is 0 or data is NULL, no new blob will be created, and the holding
4487 * property, if specified, will be set to 0.
4489 * Access to the replace pointer is assumed to be protected by the caller, e.g.
4490 * by holding the relevant modesetting object lock for its parent.
4492 * For example, a drm_connector has a 'PATH' property, which contains the ID
4493 * of a blob property with the value of the MST path information. Calling this
4494 * function with replace pointing to the connector's path_blob_ptr, length and
4495 * data set for the new path information, obj_holds_id set to the connector's
4496 * base object, and prop_holds_id set to the path property name, will perform
4497 * a completely atomic update. The access to path_blob_ptr is protected by the
4498 * caller holding a lock on the connector.
4500 static int drm_property_replace_global_blob(struct drm_device *dev,
4501 struct drm_property_blob **replace,
4504 struct drm_mode_object *obj_holds_id,
4505 struct drm_property *prop_holds_id)
4507 struct drm_property_blob *new_blob = NULL;
4508 struct drm_property_blob *old_blob = NULL;
4511 WARN_ON(replace == NULL);
4513 old_blob = *replace;
4515 if (length && data) {
4516 new_blob = drm_property_create_blob(dev, length, data);
4517 if (IS_ERR(new_blob))
4518 return PTR_ERR(new_blob);
4521 /* This does not need to be synchronised with blob_lock, as the
4522 * get_properties ioctl locks all modesetting objects, and
4523 * obj_holds_id must be locked before calling here, so we cannot
4524 * have its value out of sync with the list membership modified
4525 * below under blob_lock. */
4527 ret = drm_object_property_set_value(obj_holds_id,
4530 new_blob->base.id : 0);
4535 drm_property_unreference_blob(old_blob);
4536 *replace = new_blob;
4541 drm_property_unreference_blob(new_blob);
4546 * drm_mode_getblob_ioctl - get the contents of a blob property value
4549 * @file_priv: DRM file info
4551 * This function retrieves the contents of a blob property. The value stored in
4552 * an object's blob property is just a normal modeset object id.
4554 * Called by the user via ioctl.
4557 * Zero on success, negative errno on failure.
4559 int drm_mode_getblob_ioctl(struct drm_device *dev,
4560 void *data, struct drm_file *file_priv)
4562 struct drm_mode_get_blob *out_resp = data;
4563 struct drm_property_blob *blob;
4565 void __user *blob_ptr;
4567 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4570 drm_modeset_lock_all(dev);
4571 mutex_lock(&dev->mode_config.blob_lock);
4572 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
4578 if (out_resp->length == blob->length) {
4579 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4580 if (copy_to_user(blob_ptr, blob->data, blob->length)) {
4585 out_resp->length = blob->length;
4588 mutex_unlock(&dev->mode_config.blob_lock);
4589 drm_modeset_unlock_all(dev);
4594 * drm_mode_createblob_ioctl - create a new blob property
4597 * @file_priv: DRM file info
4599 * This function creates a new blob property with user-defined values. In order
4600 * to give us sensible validation and checking when creating, rather than at
4601 * every potential use, we also require a type to be provided upfront.
4603 * Called by the user via ioctl.
4606 * Zero on success, negative errno on failure.
4608 int drm_mode_createblob_ioctl(struct drm_device *dev,
4609 void *data, struct drm_file *file_priv)
4611 struct drm_mode_create_blob *out_resp = data;
4612 struct drm_property_blob *blob;
4613 void __user *blob_ptr;
4616 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4619 blob = drm_property_create_blob(dev, out_resp->length, NULL);
4621 return PTR_ERR(blob);
4623 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4624 if (copy_from_user(blob->data, blob_ptr, out_resp->length)) {
4629 /* Dropping the lock between create_blob and our access here is safe
4630 * as only the same file_priv can remove the blob; at this point, it is
4631 * not associated with any file_priv. */
4632 mutex_lock(&dev->mode_config.blob_lock);
4633 out_resp->blob_id = blob->base.id;
4634 list_add_tail(&blob->head_file, &file_priv->blobs);
4635 mutex_unlock(&dev->mode_config.blob_lock);
4640 drm_property_unreference_blob(blob);
4645 * drm_mode_destroyblob_ioctl - destroy a user blob property
4648 * @file_priv: DRM file info
4650 * Destroy an existing user-defined blob property.
4652 * Called by the user via ioctl.
4655 * Zero on success, negative errno on failure.
4657 int drm_mode_destroyblob_ioctl(struct drm_device *dev,
4658 void *data, struct drm_file *file_priv)
4660 struct drm_mode_destroy_blob *out_resp = data;
4661 struct drm_property_blob *blob = NULL, *bt;
4665 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4668 mutex_lock(&dev->mode_config.blob_lock);
4669 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
4675 /* Ensure the property was actually created by this user. */
4676 list_for_each_entry(bt, &file_priv->blobs, head_file) {
4688 /* We must drop head_file here, because we may not be the last
4689 * reference on the blob. */
4690 list_del_init(&blob->head_file);
4691 drm_property_unreference_blob_locked(blob);
4692 mutex_unlock(&dev->mode_config.blob_lock);
4697 mutex_unlock(&dev->mode_config.blob_lock);
4702 * drm_mode_connector_set_path_property - set tile property on connector
4703 * @connector: connector to set property on.
4704 * @path: path to use for property; must not be NULL.
4706 * This creates a property to expose to userspace to specify a
4707 * connector path. This is mainly used for DisplayPort MST where
4708 * connectors have a topology and we want to allow userspace to give
4709 * them more meaningful names.
4712 * Zero on success, negative errno on failure.
4714 int drm_mode_connector_set_path_property(struct drm_connector *connector,
4717 struct drm_device *dev = connector->dev;
4720 ret = drm_property_replace_global_blob(dev,
4721 &connector->path_blob_ptr,
4725 dev->mode_config.path_property);
4728 EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4731 * drm_mode_connector_set_tile_property - set tile property on connector
4732 * @connector: connector to set property on.
4734 * This looks up the tile information for a connector, and creates a
4735 * property for userspace to parse if it exists. The property is of
4736 * the form of 8 integers using ':' as a separator.
4739 * Zero on success, errno on failure.
4741 int drm_mode_connector_set_tile_property(struct drm_connector *connector)
4743 struct drm_device *dev = connector->dev;
4747 if (!connector->has_tile) {
4748 ret = drm_property_replace_global_blob(dev,
4749 &connector->tile_blob_ptr,
4753 dev->mode_config.tile_property);
4757 snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4758 connector->tile_group->id, connector->tile_is_single_monitor,
4759 connector->num_h_tile, connector->num_v_tile,
4760 connector->tile_h_loc, connector->tile_v_loc,
4761 connector->tile_h_size, connector->tile_v_size);
4763 ret = drm_property_replace_global_blob(dev,
4764 &connector->tile_blob_ptr,
4768 dev->mode_config.tile_property);
4771 EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
4774 * drm_mode_connector_update_edid_property - update the edid property of a connector
4775 * @connector: drm connector
4776 * @edid: new value of the edid property
4778 * This function creates a new blob modeset object and assigns its id to the
4779 * connector's edid property.
4782 * Zero on success, negative errno on failure.
4784 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4785 const struct edid *edid)
4787 struct drm_device *dev = connector->dev;
4791 /* ignore requests to set edid when overridden */
4792 if (connector->override_edid)
4796 size = EDID_LENGTH * (1 + edid->extensions);
4798 ret = drm_property_replace_global_blob(dev,
4799 &connector->edid_blob_ptr,
4803 dev->mode_config.edid_property);
4806 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4808 /* Some properties could refer to dynamic refcnt'd objects, or things that
4809 * need special locking to handle lifetime issues (ie. to ensure the prop
4810 * value doesn't become invalid part way through the property update due to
4811 * race). The value returned by reference via 'obj' should be passed back
4812 * to drm_property_change_valid_put() after the property is set (and the
4813 * object to which the property is attached has a chance to take it's own
4816 bool drm_property_change_valid_get(struct drm_property *property,
4817 uint64_t value, struct drm_mode_object **ref)
4821 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4826 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
4827 if (value < property->values[0] || value > property->values[1])
4830 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4831 int64_t svalue = U642I64(value);
4833 if (svalue < U642I64(property->values[0]) ||
4834 svalue > U642I64(property->values[1]))
4837 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4838 uint64_t valid_mask = 0;
4840 for (i = 0; i < property->num_values; i++)
4841 valid_mask |= (1ULL << property->values[i]);
4842 return !(value & ~valid_mask);
4843 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
4844 struct drm_property_blob *blob;
4849 blob = drm_property_lookup_blob(property->dev, value);
4856 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4857 /* a zero value for an object property translates to null: */
4861 return _object_find(property->dev, value, property->values[0]) != NULL;
4864 for (i = 0; i < property->num_values; i++)
4865 if (property->values[i] == value)
4870 void drm_property_change_valid_put(struct drm_property *property,
4871 struct drm_mode_object *ref)
4876 if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4877 drm_mode_object_unreference(ref);
4878 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4879 drm_property_unreference_blob(obj_to_blob(ref));
4883 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4886 * @file_priv: DRM file info
4888 * This function sets the current value for a connectors's property. It also
4889 * calls into a driver's ->set_property callback to update the hardware state
4891 * Called by the user via ioctl.
4894 * Zero on success, negative errno on failure.
4896 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4897 void *data, struct drm_file *file_priv)
4899 struct drm_mode_connector_set_property *conn_set_prop = data;
4900 struct drm_mode_obj_set_property obj_set_prop = {
4901 .value = conn_set_prop->value,
4902 .prop_id = conn_set_prop->prop_id,
4903 .obj_id = conn_set_prop->connector_id,
4904 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4907 /* It does all the locking and checking we need */
4908 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
4911 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4912 struct drm_property *property,
4916 struct drm_connector *connector = obj_to_connector(obj);
4918 /* Do DPMS ourselves */
4919 if (property == connector->dev->mode_config.dpms_property) {
4920 ret = (*connector->funcs->dpms)(connector, (int)value);
4921 } else if (connector->funcs->set_property)
4922 ret = connector->funcs->set_property(connector, property, value);
4924 /* store the property value if successful */
4926 drm_object_property_set_value(&connector->base, property, value);
4930 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4931 struct drm_property *property,
4935 struct drm_crtc *crtc = obj_to_crtc(obj);
4937 if (crtc->funcs->set_property)
4938 ret = crtc->funcs->set_property(crtc, property, value);
4940 drm_object_property_set_value(obj, property, value);
4946 * drm_mode_plane_set_obj_prop - set the value of a property
4947 * @plane: drm plane object to set property value for
4948 * @property: property to set
4949 * @value: value the property should be set to
4951 * This functions sets a given property on a given plane object. This function
4952 * calls the driver's ->set_property callback and changes the software state of
4953 * the property if the callback succeeds.
4956 * Zero on success, error code on failure.
4958 int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4959 struct drm_property *property,
4963 struct drm_mode_object *obj = &plane->base;
4965 if (plane->funcs->set_property)
4966 ret = plane->funcs->set_property(plane, property, value);
4968 drm_object_property_set_value(obj, property, value);
4972 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4975 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4978 * @file_priv: DRM file info
4980 * This function retrieves the current value for an object's property. Compared
4981 * to the connector specific ioctl this one is extended to also work on crtc and
4984 * Called by the user via ioctl.
4987 * Zero on success, negative errno on failure.
4989 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4990 struct drm_file *file_priv)
4992 struct drm_mode_obj_get_properties *arg = data;
4993 struct drm_mode_object *obj;
4996 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4999 drm_modeset_lock_all(dev);
5001 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
5006 if (!obj->properties) {
5011 ret = get_properties(obj, file_priv->atomic,
5012 (uint32_t __user *)(unsigned long)(arg->props_ptr),
5013 (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
5017 drm_modeset_unlock_all(dev);
5022 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
5025 * @file_priv: DRM file info
5027 * This function sets the current value for an object's property. It also calls
5028 * into a driver's ->set_property callback to update the hardware state.
5029 * Compared to the connector specific ioctl this one is extended to also work on
5030 * crtc and plane objects.
5032 * Called by the user via ioctl.
5035 * Zero on success, negative errno on failure.
5037 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
5038 struct drm_file *file_priv)
5040 struct drm_mode_obj_set_property *arg = data;
5041 struct drm_mode_object *arg_obj;
5042 struct drm_mode_object *prop_obj;
5043 struct drm_property *property;
5044 int i, ret = -EINVAL;
5045 struct drm_mode_object *ref;
5047 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5050 drm_modeset_lock_all(dev);
5052 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
5057 if (!arg_obj->properties)
5060 for (i = 0; i < arg_obj->properties->count; i++)
5061 if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
5064 if (i == arg_obj->properties->count)
5067 prop_obj = drm_mode_object_find(dev, arg->prop_id,
5068 DRM_MODE_OBJECT_PROPERTY);
5073 property = obj_to_property(prop_obj);
5075 if (!drm_property_change_valid_get(property, arg->value, &ref))
5078 switch (arg_obj->type) {
5079 case DRM_MODE_OBJECT_CONNECTOR:
5080 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
5083 case DRM_MODE_OBJECT_CRTC:
5084 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
5086 case DRM_MODE_OBJECT_PLANE:
5087 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
5088 property, arg->value);
5092 drm_property_change_valid_put(property, ref);
5095 drm_modeset_unlock_all(dev);
5100 * drm_mode_connector_attach_encoder - attach a connector to an encoder
5101 * @connector: connector to attach
5102 * @encoder: encoder to attach @connector to
5104 * This function links up a connector to an encoder. Note that the routing
5105 * restrictions between encoders and crtcs are exposed to userspace through the
5106 * possible_clones and possible_crtcs bitmasks.
5109 * Zero on success, negative errno on failure.
5111 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
5112 struct drm_encoder *encoder)
5117 * In the past, drivers have attempted to model the static association
5118 * of connector to encoder in simple connector/encoder devices using a
5119 * direct assignment of connector->encoder = encoder. This connection
5120 * is a logical one and the responsibility of the core, so drivers are
5121 * expected not to mess with this.
5123 * Note that the error return should've been enough here, but a large
5124 * majority of drivers ignores the return value, so add in a big WARN
5125 * to get people's attention.
5127 if (WARN_ON(connector->encoder))
5130 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
5131 if (connector->encoder_ids[i] == 0) {
5132 connector->encoder_ids[i] = encoder->base.id;
5138 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
5141 * drm_mode_crtc_set_gamma_size - set the gamma table size
5142 * @crtc: CRTC to set the gamma table size for
5143 * @gamma_size: size of the gamma table
5145 * Drivers which support gamma tables should set this to the supported gamma
5146 * table size when initializing the CRTC. Currently the drm core only supports a
5147 * fixed gamma table size.
5150 * Zero on success, negative errno on failure.
5152 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
5155 crtc->gamma_size = gamma_size;
5157 crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
5159 if (!crtc->gamma_store) {
5160 crtc->gamma_size = 0;
5166 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
5169 * drm_mode_gamma_set_ioctl - set the gamma table
5172 * @file_priv: DRM file info
5174 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
5175 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
5177 * Called by the user via ioctl.
5180 * Zero on success, negative errno on failure.
5182 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
5183 void *data, struct drm_file *file_priv)
5185 struct drm_mode_crtc_lut *crtc_lut = data;
5186 struct drm_crtc *crtc;
5187 void *r_base, *g_base, *b_base;
5191 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5194 drm_modeset_lock_all(dev);
5195 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5201 if (crtc->funcs->gamma_set == NULL) {
5206 /* memcpy into gamma store */
5207 if (crtc_lut->gamma_size != crtc->gamma_size) {
5212 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5213 r_base = crtc->gamma_store;
5214 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
5219 g_base = r_base + size;
5220 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
5225 b_base = g_base + size;
5226 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
5231 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
5234 drm_modeset_unlock_all(dev);
5240 * drm_mode_gamma_get_ioctl - get the gamma table
5243 * @file_priv: DRM file info
5245 * Copy the current gamma table into the storage provided. This also provides
5246 * the gamma table size the driver expects, which can be used to size the
5247 * allocated storage.
5249 * Called by the user via ioctl.
5252 * Zero on success, negative errno on failure.
5254 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
5255 void *data, struct drm_file *file_priv)
5257 struct drm_mode_crtc_lut *crtc_lut = data;
5258 struct drm_crtc *crtc;
5259 void *r_base, *g_base, *b_base;
5263 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5266 drm_modeset_lock_all(dev);
5267 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5273 /* memcpy into gamma store */
5274 if (crtc_lut->gamma_size != crtc->gamma_size) {
5279 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5280 r_base = crtc->gamma_store;
5281 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
5286 g_base = r_base + size;
5287 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
5292 b_base = g_base + size;
5293 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
5298 drm_modeset_unlock_all(dev);
5303 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
5306 * @file_priv: DRM file info
5308 * This schedules an asynchronous update on a given CRTC, called page flip.
5309 * Optionally a drm event is generated to signal the completion of the event.
5310 * Generic drivers cannot assume that a pageflip with changed framebuffer
5311 * properties (including driver specific metadata like tiling layout) will work,
5312 * but some drivers support e.g. pixel format changes through the pageflip
5315 * Called by the user via ioctl.
5318 * Zero on success, negative errno on failure.
5320 int drm_mode_page_flip_ioctl(struct drm_device *dev,
5321 void *data, struct drm_file *file_priv)
5323 struct drm_mode_crtc_page_flip *page_flip = data;
5324 struct drm_crtc *crtc;
5325 struct drm_framebuffer *fb = NULL;
5326 struct drm_pending_vblank_event *e = NULL;
5329 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
5330 page_flip->reserved != 0)
5333 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
5336 crtc = drm_crtc_find(dev, page_flip->crtc_id);
5340 drm_modeset_lock_crtc(crtc, crtc->primary);
5341 if (crtc->primary->fb == NULL) {
5342 /* The framebuffer is currently unbound, presumably
5343 * due to a hotplug event, that userspace has not
5350 if (crtc->funcs->page_flip == NULL)
5353 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
5360 const struct drm_plane_state *state = crtc->primary->state;
5362 ret = check_src_coords(state->src_x, state->src_y,
5363 state->src_w, state->src_h, fb);
5365 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
5370 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
5371 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
5376 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
5377 e = kzalloc(sizeof *e, GFP_KERNEL);
5382 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
5383 e->event.base.length = sizeof(e->event);
5384 e->event.user_data = page_flip->user_data;
5385 ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base);
5392 crtc->primary->old_fb = crtc->primary->fb;
5393 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
5395 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT)
5396 drm_event_cancel_free(dev, &e->base);
5397 /* Keep the old fb, don't unref it. */
5398 crtc->primary->old_fb = NULL;
5400 crtc->primary->fb = fb;
5401 /* Unref only the old framebuffer. */
5407 drm_framebuffer_unreference(fb);
5408 if (crtc->primary->old_fb)
5409 drm_framebuffer_unreference(crtc->primary->old_fb);
5410 crtc->primary->old_fb = NULL;
5411 drm_modeset_unlock_crtc(crtc);
5417 * drm_mode_config_reset - call ->reset callbacks
5420 * This functions calls all the crtc's, encoder's and connector's ->reset
5421 * callback. Drivers can use this in e.g. their driver load or resume code to
5422 * reset hardware and software state.
5424 void drm_mode_config_reset(struct drm_device *dev)
5426 struct drm_crtc *crtc;
5427 struct drm_plane *plane;
5428 struct drm_encoder *encoder;
5429 struct drm_connector *connector;
5431 drm_for_each_plane(plane, dev)
5432 if (plane->funcs->reset)
5433 plane->funcs->reset(plane);
5435 drm_for_each_crtc(crtc, dev)
5436 if (crtc->funcs->reset)
5437 crtc->funcs->reset(crtc);
5439 drm_for_each_encoder(encoder, dev)
5440 if (encoder->funcs->reset)
5441 encoder->funcs->reset(encoder);
5443 mutex_lock(&dev->mode_config.mutex);
5444 drm_for_each_connector(connector, dev)
5445 if (connector->funcs->reset)
5446 connector->funcs->reset(connector);
5447 mutex_unlock(&dev->mode_config.mutex);
5449 EXPORT_SYMBOL(drm_mode_config_reset);
5452 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5455 * @file_priv: DRM file info
5457 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5458 * TTM or something else entirely) and returns the resulting buffer handle. This
5459 * handle can then be wrapped up into a framebuffer modeset object.
5461 * Note that userspace is not allowed to use such objects for render
5462 * acceleration - drivers must create their own private ioctls for such a use
5465 * Called by the user via ioctl.
5468 * Zero on success, negative errno on failure.
5470 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
5471 void *data, struct drm_file *file_priv)
5473 struct drm_mode_create_dumb *args = data;
5474 u32 cpp, stride, size;
5476 if (!dev->driver->dumb_create)
5478 if (!args->width || !args->height || !args->bpp)
5481 /* overflow checks for 32bit size calculations */
5482 /* NOTE: DIV_ROUND_UP() can overflow */
5483 cpp = DIV_ROUND_UP(args->bpp, 8);
5484 if (!cpp || cpp > 0xffffffffU / args->width)
5486 stride = cpp * args->width;
5487 if (args->height > 0xffffffffU / stride)
5490 /* test for wrap-around */
5491 size = args->height * stride;
5492 if (PAGE_ALIGN(size) == 0)
5496 * handle, pitch and size are output parameters. Zero them out to
5497 * prevent drivers from accidentally using uninitialized data. Since
5498 * not all existing userspace is clearing these fields properly we
5499 * cannot reject IOCTL with garbage in them.
5505 return dev->driver->dumb_create(file_priv, dev, args);
5509 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5512 * @file_priv: DRM file info
5514 * Allocate an offset in the drm device node's address space to be able to
5515 * memory map a dumb buffer.
5517 * Called by the user via ioctl.
5520 * Zero on success, negative errno on failure.
5522 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
5523 void *data, struct drm_file *file_priv)
5525 struct drm_mode_map_dumb *args = data;
5527 /* call driver ioctl to get mmap offset */
5528 if (!dev->driver->dumb_map_offset)
5531 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
5535 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5538 * @file_priv: DRM file info
5540 * This destroys the userspace handle for the given dumb backing storage buffer.
5541 * Since buffer objects must be reference counted in the kernel a buffer object
5542 * won't be immediately freed if a framebuffer modeset object still uses it.
5544 * Called by the user via ioctl.
5547 * Zero on success, negative errno on failure.
5549 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
5550 void *data, struct drm_file *file_priv)
5552 struct drm_mode_destroy_dumb *args = data;
5554 if (!dev->driver->dumb_destroy)
5557 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
5561 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5562 * @format: pixel format (DRM_FORMAT_*)
5563 * @depth: storage for the depth value
5564 * @bpp: storage for the bpp value
5566 * This only supports RGB formats here for compat with code that doesn't use
5567 * pixel formats directly yet.
5569 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
5574 case DRM_FORMAT_RGB332:
5575 case DRM_FORMAT_BGR233:
5579 case DRM_FORMAT_XRGB1555:
5580 case DRM_FORMAT_XBGR1555:
5581 case DRM_FORMAT_RGBX5551:
5582 case DRM_FORMAT_BGRX5551:
5583 case DRM_FORMAT_ARGB1555:
5584 case DRM_FORMAT_ABGR1555:
5585 case DRM_FORMAT_RGBA5551:
5586 case DRM_FORMAT_BGRA5551:
5590 case DRM_FORMAT_RGB565:
5591 case DRM_FORMAT_BGR565:
5595 case DRM_FORMAT_RGB888:
5596 case DRM_FORMAT_BGR888:
5600 case DRM_FORMAT_XRGB8888:
5601 case DRM_FORMAT_XBGR8888:
5602 case DRM_FORMAT_RGBX8888:
5603 case DRM_FORMAT_BGRX8888:
5607 case DRM_FORMAT_XRGB2101010:
5608 case DRM_FORMAT_XBGR2101010:
5609 case DRM_FORMAT_RGBX1010102:
5610 case DRM_FORMAT_BGRX1010102:
5611 case DRM_FORMAT_ARGB2101010:
5612 case DRM_FORMAT_ABGR2101010:
5613 case DRM_FORMAT_RGBA1010102:
5614 case DRM_FORMAT_BGRA1010102:
5618 case DRM_FORMAT_ARGB8888:
5619 case DRM_FORMAT_ABGR8888:
5620 case DRM_FORMAT_RGBA8888:
5621 case DRM_FORMAT_BGRA8888:
5626 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5627 drm_get_format_name(format));
5633 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
5636 * drm_format_num_planes - get the number of planes for format
5637 * @format: pixel format (DRM_FORMAT_*)
5640 * The number of planes used by the specified pixel format.
5642 int drm_format_num_planes(uint32_t format)
5645 case DRM_FORMAT_YUV410:
5646 case DRM_FORMAT_YVU410:
5647 case DRM_FORMAT_YUV411:
5648 case DRM_FORMAT_YVU411:
5649 case DRM_FORMAT_YUV420:
5650 case DRM_FORMAT_YVU420:
5651 case DRM_FORMAT_YUV422:
5652 case DRM_FORMAT_YVU422:
5653 case DRM_FORMAT_YUV444:
5654 case DRM_FORMAT_YVU444:
5656 case DRM_FORMAT_NV12:
5657 case DRM_FORMAT_NV21:
5658 case DRM_FORMAT_NV16:
5659 case DRM_FORMAT_NV61:
5660 case DRM_FORMAT_NV24:
5661 case DRM_FORMAT_NV42:
5667 EXPORT_SYMBOL(drm_format_num_planes);
5670 * drm_format_plane_cpp - determine the bytes per pixel value
5671 * @format: pixel format (DRM_FORMAT_*)
5672 * @plane: plane index
5675 * The bytes per pixel value for the specified plane.
5677 int drm_format_plane_cpp(uint32_t format, int plane)
5682 if (plane >= drm_format_num_planes(format))
5686 case DRM_FORMAT_YUYV:
5687 case DRM_FORMAT_YVYU:
5688 case DRM_FORMAT_UYVY:
5689 case DRM_FORMAT_VYUY:
5691 case DRM_FORMAT_NV12:
5692 case DRM_FORMAT_NV21:
5693 case DRM_FORMAT_NV16:
5694 case DRM_FORMAT_NV61:
5695 case DRM_FORMAT_NV24:
5696 case DRM_FORMAT_NV42:
5697 return plane ? 2 : 1;
5698 case DRM_FORMAT_YUV410:
5699 case DRM_FORMAT_YVU410:
5700 case DRM_FORMAT_YUV411:
5701 case DRM_FORMAT_YVU411:
5702 case DRM_FORMAT_YUV420:
5703 case DRM_FORMAT_YVU420:
5704 case DRM_FORMAT_YUV422:
5705 case DRM_FORMAT_YVU422:
5706 case DRM_FORMAT_YUV444:
5707 case DRM_FORMAT_YVU444:
5710 drm_fb_get_bpp_depth(format, &depth, &bpp);
5714 EXPORT_SYMBOL(drm_format_plane_cpp);
5717 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5718 * @format: pixel format (DRM_FORMAT_*)
5721 * The horizontal chroma subsampling factor for the
5722 * specified pixel format.
5724 int drm_format_horz_chroma_subsampling(uint32_t format)
5727 case DRM_FORMAT_YUV411:
5728 case DRM_FORMAT_YVU411:
5729 case DRM_FORMAT_YUV410:
5730 case DRM_FORMAT_YVU410:
5732 case DRM_FORMAT_YUYV:
5733 case DRM_FORMAT_YVYU:
5734 case DRM_FORMAT_UYVY:
5735 case DRM_FORMAT_VYUY:
5736 case DRM_FORMAT_NV12:
5737 case DRM_FORMAT_NV21:
5738 case DRM_FORMAT_NV16:
5739 case DRM_FORMAT_NV61:
5740 case DRM_FORMAT_YUV422:
5741 case DRM_FORMAT_YVU422:
5742 case DRM_FORMAT_YUV420:
5743 case DRM_FORMAT_YVU420:
5749 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5752 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5753 * @format: pixel format (DRM_FORMAT_*)
5756 * The vertical chroma subsampling factor for the
5757 * specified pixel format.
5759 int drm_format_vert_chroma_subsampling(uint32_t format)
5762 case DRM_FORMAT_YUV410:
5763 case DRM_FORMAT_YVU410:
5765 case DRM_FORMAT_YUV420:
5766 case DRM_FORMAT_YVU420:
5767 case DRM_FORMAT_NV12:
5768 case DRM_FORMAT_NV21:
5774 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
5777 * drm_format_plane_width - width of the plane given the first plane
5778 * @width: width of the first plane
5779 * @format: pixel format
5780 * @plane: plane index
5783 * The width of @plane, given that the width of the first plane is @width.
5785 int drm_format_plane_width(int width, uint32_t format, int plane)
5787 if (plane >= drm_format_num_planes(format))
5793 return width / drm_format_horz_chroma_subsampling(format);
5795 EXPORT_SYMBOL(drm_format_plane_width);
5798 * drm_format_plane_height - height of the plane given the first plane
5799 * @height: height of the first plane
5800 * @format: pixel format
5801 * @plane: plane index
5804 * The height of @plane, given that the height of the first plane is @height.
5806 int drm_format_plane_height(int height, uint32_t format, int plane)
5808 if (plane >= drm_format_num_planes(format))
5814 return height / drm_format_vert_chroma_subsampling(format);
5816 EXPORT_SYMBOL(drm_format_plane_height);
5819 * drm_rotation_simplify() - Try to simplify the rotation
5820 * @rotation: Rotation to be simplified
5821 * @supported_rotations: Supported rotations
5823 * Attempt to simplify the rotation to a form that is supported.
5824 * Eg. if the hardware supports everything except DRM_REFLECT_X
5825 * one could call this function like this:
5827 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5828 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5829 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5831 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5832 * transforms the hardware supports, this function may not
5833 * be able to produce a supported transform, so the caller should
5834 * check the result afterwards.
5836 unsigned int drm_rotation_simplify(unsigned int rotation,
5837 unsigned int supported_rotations)
5839 if (rotation & ~supported_rotations) {
5840 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5841 rotation = (rotation & DRM_REFLECT_MASK) |
5842 BIT((ffs(rotation & DRM_ROTATE_MASK) + 1) % 4);
5847 EXPORT_SYMBOL(drm_rotation_simplify);
5850 * drm_mode_config_init - initialize DRM mode_configuration structure
5853 * Initialize @dev's mode_config structure, used for tracking the graphics
5854 * configuration of @dev.
5856 * Since this initializes the modeset locks, no locking is possible. Which is no
5857 * problem, since this should happen single threaded at init time. It is the
5858 * driver's problem to ensure this guarantee.
5861 void drm_mode_config_init(struct drm_device *dev)
5863 mutex_init(&dev->mode_config.mutex);
5864 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
5865 mutex_init(&dev->mode_config.idr_mutex);
5866 mutex_init(&dev->mode_config.fb_lock);
5867 mutex_init(&dev->mode_config.blob_lock);
5868 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5869 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5870 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5871 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5872 INIT_LIST_HEAD(&dev->mode_config.property_list);
5873 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5874 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5875 idr_init(&dev->mode_config.crtc_idr);
5876 idr_init(&dev->mode_config.tile_idr);
5877 ida_init(&dev->mode_config.connector_ida);
5879 drm_modeset_lock_all(dev);
5880 drm_mode_create_standard_properties(dev);
5881 drm_modeset_unlock_all(dev);
5883 /* Just to be sure */
5884 dev->mode_config.num_fb = 0;
5885 dev->mode_config.num_connector = 0;
5886 dev->mode_config.num_crtc = 0;
5887 dev->mode_config.num_encoder = 0;
5888 dev->mode_config.num_overlay_plane = 0;
5889 dev->mode_config.num_total_plane = 0;
5891 EXPORT_SYMBOL(drm_mode_config_init);
5894 * drm_mode_config_cleanup - free up DRM mode_config info
5897 * Free up all the connectors and CRTCs associated with this DRM device, then
5898 * free up the framebuffers and associated buffer objects.
5900 * Note that since this /should/ happen single-threaded at driver/device
5901 * teardown time, no locking is required. It's the driver's job to ensure that
5902 * this guarantee actually holds true.
5904 * FIXME: cleanup any dangling user buffer objects too
5906 void drm_mode_config_cleanup(struct drm_device *dev)
5908 struct drm_connector *connector, *ot;
5909 struct drm_crtc *crtc, *ct;
5910 struct drm_encoder *encoder, *enct;
5911 struct drm_framebuffer *fb, *fbt;
5912 struct drm_property *property, *pt;
5913 struct drm_property_blob *blob, *bt;
5914 struct drm_plane *plane, *plt;
5916 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5918 encoder->funcs->destroy(encoder);
5921 list_for_each_entry_safe(connector, ot,
5922 &dev->mode_config.connector_list, head) {
5923 connector->funcs->destroy(connector);
5926 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5928 drm_property_destroy(dev, property);
5931 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5933 plane->funcs->destroy(plane);
5936 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5937 crtc->funcs->destroy(crtc);
5940 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5942 drm_property_unreference_blob(blob);
5946 * Single-threaded teardown context, so it's not required to grab the
5947 * fb_lock to protect against concurrent fb_list access. Contrary, it
5948 * would actually deadlock with the drm_framebuffer_cleanup function.
5950 * Also, if there are any framebuffers left, that's a driver leak now,
5951 * so politely WARN about this.
5953 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5954 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5955 drm_framebuffer_free(&fb->base.refcount);
5958 ida_destroy(&dev->mode_config.connector_ida);
5959 idr_destroy(&dev->mode_config.tile_idr);
5960 idr_destroy(&dev->mode_config.crtc_idr);
5961 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
5963 EXPORT_SYMBOL(drm_mode_config_cleanup);
5965 struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5966 unsigned int supported_rotations)
5968 static const struct drm_prop_enum_list props[] = {
5969 { DRM_ROTATE_0, "rotate-0" },
5970 { DRM_ROTATE_90, "rotate-90" },
5971 { DRM_ROTATE_180, "rotate-180" },
5972 { DRM_ROTATE_270, "rotate-270" },
5973 { DRM_REFLECT_X, "reflect-x" },
5974 { DRM_REFLECT_Y, "reflect-y" },
5977 return drm_property_create_bitmask(dev, 0, "rotation",
5978 props, ARRAY_SIZE(props),
5979 supported_rotations);
5981 EXPORT_SYMBOL(drm_mode_create_rotation_property);
5986 * Tile groups are used to represent tiled monitors with a unique
5987 * integer identifier. Tiled monitors using DisplayID v1.3 have
5988 * a unique 8-byte handle, we store this in a tile group, so we
5989 * have a common identifier for all tiles in a monitor group.
5991 static void drm_tile_group_free(struct kref *kref)
5993 struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
5994 struct drm_device *dev = tg->dev;
5995 mutex_lock(&dev->mode_config.idr_mutex);
5996 idr_remove(&dev->mode_config.tile_idr, tg->id);
5997 mutex_unlock(&dev->mode_config.idr_mutex);
6002 * drm_mode_put_tile_group - drop a reference to a tile group.
6004 * @tg: tile group to drop reference to.
6006 * drop reference to tile group and free if 0.
6008 void drm_mode_put_tile_group(struct drm_device *dev,
6009 struct drm_tile_group *tg)
6011 kref_put(&tg->refcount, drm_tile_group_free);
6015 * drm_mode_get_tile_group - get a reference to an existing tile group
6017 * @topology: 8-bytes unique per monitor.
6019 * Use the unique bytes to get a reference to an existing tile group.
6022 * tile group or NULL if not found.
6024 struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
6027 struct drm_tile_group *tg;
6029 mutex_lock(&dev->mode_config.idr_mutex);
6030 idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
6031 if (!memcmp(tg->group_data, topology, 8)) {
6032 if (!kref_get_unless_zero(&tg->refcount))
6034 mutex_unlock(&dev->mode_config.idr_mutex);
6038 mutex_unlock(&dev->mode_config.idr_mutex);
6041 EXPORT_SYMBOL(drm_mode_get_tile_group);
6044 * drm_mode_create_tile_group - create a tile group from a displayid description
6046 * @topology: 8-bytes unique per monitor.
6048 * Create a tile group for the unique monitor, and get a unique
6049 * identifier for the tile group.
6052 * new tile group or error.
6054 struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
6057 struct drm_tile_group *tg;
6060 tg = kzalloc(sizeof(*tg), GFP_KERNEL);
6062 return ERR_PTR(-ENOMEM);
6064 kref_init(&tg->refcount);
6065 memcpy(tg->group_data, topology, 8);
6068 mutex_lock(&dev->mode_config.idr_mutex);
6069 ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
6077 mutex_unlock(&dev->mode_config.idr_mutex);
6080 EXPORT_SYMBOL(drm_mode_create_tile_group);