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 WARN_ON(type == DRM_MODE_OBJECT_BLOB);
393 obj = _object_find(dev, id, type);
396 EXPORT_SYMBOL(drm_mode_object_find);
399 * drm_mode_object_unreference - decr the object refcnt
402 * This functions decrements the object's refcount if it is a refcounted modeset
403 * object. It is a no-op on any other object. This is used to drop references
404 * acquired with drm_mode_object_reference().
406 void drm_mode_object_unreference(struct drm_mode_object *obj)
409 DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, atomic_read(&obj->refcount.refcount));
410 kref_put(&obj->refcount, obj->free_cb);
413 EXPORT_SYMBOL(drm_mode_object_unreference);
416 * drm_mode_object_reference - incr the object refcnt
419 * This functions increments the object's refcount if it is a refcounted modeset
420 * object. It is a no-op on any other object. References should be dropped again
421 * by calling drm_mode_object_unreference().
423 void drm_mode_object_reference(struct drm_mode_object *obj)
426 DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, atomic_read(&obj->refcount.refcount));
427 kref_get(&obj->refcount);
430 EXPORT_SYMBOL(drm_mode_object_reference);
432 static void drm_framebuffer_free(struct kref *kref)
434 struct drm_framebuffer *fb =
435 container_of(kref, struct drm_framebuffer, base.refcount);
436 struct drm_device *dev = fb->dev;
439 * The lookup idr holds a weak reference, which has not necessarily been
440 * removed at this point. Check for that.
442 drm_mode_object_unregister(dev, &fb->base);
444 fb->funcs->destroy(fb);
448 * drm_framebuffer_init - initialize a framebuffer
450 * @fb: framebuffer to be initialized
451 * @funcs: ... with these functions
453 * Allocates an ID for the framebuffer's parent mode object, sets its mode
454 * functions & device file and adds it to the master fd list.
457 * This functions publishes the fb and makes it available for concurrent access
458 * by other users. Which means by this point the fb _must_ be fully set up -
459 * since all the fb attributes are invariant over its lifetime, no further
460 * locking but only correct reference counting is required.
463 * Zero on success, error code on failure.
465 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
466 const struct drm_framebuffer_funcs *funcs)
470 INIT_LIST_HEAD(&fb->filp_head);
474 ret = drm_mode_object_get_reg(dev, &fb->base, DRM_MODE_OBJECT_FB,
475 false, drm_framebuffer_free);
479 mutex_lock(&dev->mode_config.fb_lock);
480 dev->mode_config.num_fb++;
481 list_add(&fb->head, &dev->mode_config.fb_list);
482 mutex_unlock(&dev->mode_config.fb_lock);
484 drm_mode_object_register(dev, &fb->base);
488 EXPORT_SYMBOL(drm_framebuffer_init);
491 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
493 * @id: id of the fb object
495 * If successful, this grabs an additional reference to the framebuffer -
496 * callers need to make sure to eventually unreference the returned framebuffer
497 * again, using @drm_framebuffer_unreference.
499 struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
502 struct drm_mode_object *obj;
503 struct drm_framebuffer *fb = NULL;
505 obj = _object_find(dev, id, DRM_MODE_OBJECT_FB);
510 EXPORT_SYMBOL(drm_framebuffer_lookup);
513 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
514 * @fb: fb to unregister
516 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
517 * those used for fbdev. Note that the caller must hold a reference of it's own,
518 * i.e. the object may not be destroyed through this call (since it'll lead to a
519 * locking inversion).
521 void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
523 struct drm_device *dev;
530 /* Mark fb as reaped and drop idr ref. */
531 drm_mode_object_unregister(dev, &fb->base);
533 EXPORT_SYMBOL(drm_framebuffer_unregister_private);
536 * drm_framebuffer_cleanup - remove a framebuffer object
537 * @fb: framebuffer to remove
539 * Cleanup framebuffer. This function is intended to be used from the drivers
540 * ->destroy callback. It can also be used to clean up driver private
541 * framebuffers embedded into a larger structure.
543 * Note that this function does not remove the fb from active usuage - if it is
544 * still used anywhere, hilarity can ensue since userspace could call getfb on
545 * the id and get back -EINVAL. Obviously no concern at driver unload time.
547 * Also, the framebuffer will not be removed from the lookup idr - for
548 * user-created framebuffers this will happen in in the rmfb ioctl. For
549 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
550 * drm_framebuffer_unregister_private.
552 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
554 struct drm_device *dev = fb->dev;
556 mutex_lock(&dev->mode_config.fb_lock);
558 dev->mode_config.num_fb--;
559 mutex_unlock(&dev->mode_config.fb_lock);
561 EXPORT_SYMBOL(drm_framebuffer_cleanup);
564 * drm_framebuffer_remove - remove and unreference a framebuffer object
565 * @fb: framebuffer to remove
567 * Scans all the CRTCs and planes in @dev's mode_config. If they're
568 * using @fb, removes it, setting it to NULL. Then drops the reference to the
569 * passed-in framebuffer. Might take the modeset locks.
571 * Note that this function optimizes the cleanup away if the caller holds the
572 * last reference to the framebuffer. It is also guaranteed to not take the
573 * modeset locks in this case.
575 void drm_framebuffer_remove(struct drm_framebuffer *fb)
577 struct drm_device *dev;
578 struct drm_crtc *crtc;
579 struct drm_plane *plane;
580 struct drm_mode_set set;
588 WARN_ON(!list_empty(&fb->filp_head));
591 * drm ABI mandates that we remove any deleted framebuffers from active
592 * useage. But since most sane clients only remove framebuffers they no
593 * longer need, try to optimize this away.
595 * Since we're holding a reference ourselves, observing a refcount of 1
596 * means that we're the last holder and can skip it. Also, the refcount
597 * can never increase from 1 again, so we don't need any barriers or
600 * Note that userspace could try to race with use and instate a new
601 * usage _after_ we've cleared all current ones. End result will be an
602 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
605 if (drm_framebuffer_read_refcount(fb) > 1) {
606 drm_modeset_lock_all(dev);
607 /* remove from any CRTC */
608 drm_for_each_crtc(crtc, dev) {
609 if (crtc->primary->fb == fb) {
610 /* should turn off the crtc */
611 memset(&set, 0, sizeof(struct drm_mode_set));
614 ret = drm_mode_set_config_internal(&set);
616 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
620 drm_for_each_plane(plane, dev) {
622 drm_plane_force_disable(plane);
624 drm_modeset_unlock_all(dev);
627 drm_framebuffer_unreference(fb);
629 EXPORT_SYMBOL(drm_framebuffer_remove);
631 DEFINE_WW_CLASS(crtc_ww_class);
633 static unsigned int drm_num_crtcs(struct drm_device *dev)
635 unsigned int num = 0;
636 struct drm_crtc *tmp;
638 drm_for_each_crtc(tmp, dev) {
646 * drm_crtc_init_with_planes - Initialise a new CRTC object with
647 * specified primary and cursor planes.
649 * @crtc: CRTC object to init
650 * @primary: Primary plane for CRTC
651 * @cursor: Cursor plane for CRTC
652 * @funcs: callbacks for the new CRTC
653 * @name: printf style format string for the CRTC name, or NULL for default name
655 * Inits a new object created as base part of a driver crtc object.
658 * Zero on success, error code on failure.
660 int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
661 struct drm_plane *primary,
662 struct drm_plane *cursor,
663 const struct drm_crtc_funcs *funcs,
664 const char *name, ...)
666 struct drm_mode_config *config = &dev->mode_config;
669 WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY);
670 WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR);
675 drm_modeset_lock_init(&crtc->mutex);
676 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
684 crtc->name = kvasprintf(GFP_KERNEL, name, ap);
687 crtc->name = kasprintf(GFP_KERNEL, "crtc-%d",
691 drm_mode_object_unregister(dev, &crtc->base);
695 crtc->base.properties = &crtc->properties;
697 list_add_tail(&crtc->head, &config->crtc_list);
700 crtc->primary = primary;
701 crtc->cursor = cursor;
703 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
705 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
707 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
708 drm_object_attach_property(&crtc->base, config->prop_active, 0);
709 drm_object_attach_property(&crtc->base, config->prop_mode_id, 0);
714 EXPORT_SYMBOL(drm_crtc_init_with_planes);
717 * drm_crtc_cleanup - Clean up the core crtc usage
718 * @crtc: CRTC to cleanup
720 * This function cleans up @crtc and removes it from the DRM mode setting
721 * core. Note that the function does *not* free the crtc structure itself,
722 * this is the responsibility of the caller.
724 void drm_crtc_cleanup(struct drm_crtc *crtc)
726 struct drm_device *dev = crtc->dev;
728 kfree(crtc->gamma_store);
729 crtc->gamma_store = NULL;
731 drm_modeset_lock_fini(&crtc->mutex);
733 drm_mode_object_unregister(dev, &crtc->base);
734 list_del(&crtc->head);
735 dev->mode_config.num_crtc--;
737 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
738 if (crtc->state && crtc->funcs->atomic_destroy_state)
739 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
743 memset(crtc, 0, sizeof(*crtc));
745 EXPORT_SYMBOL(drm_crtc_cleanup);
748 * drm_crtc_index - find the index of a registered CRTC
749 * @crtc: CRTC to find index for
751 * Given a registered CRTC, return the index of that CRTC within a DRM
752 * device's list of CRTCs.
754 unsigned int drm_crtc_index(struct drm_crtc *crtc)
756 unsigned int index = 0;
757 struct drm_crtc *tmp;
759 drm_for_each_crtc(tmp, crtc->dev) {
768 EXPORT_SYMBOL(drm_crtc_index);
771 * drm_mode_remove - remove and free a mode
772 * @connector: connector list to modify
773 * @mode: mode to remove
775 * Remove @mode from @connector's mode list, then free it.
777 static void drm_mode_remove(struct drm_connector *connector,
778 struct drm_display_mode *mode)
780 list_del(&mode->head);
781 drm_mode_destroy(connector->dev, mode);
785 * drm_display_info_set_bus_formats - set the supported bus formats
786 * @info: display info to store bus formats in
787 * @formats: array containing the supported bus formats
788 * @num_formats: the number of entries in the fmts array
790 * Store the supported bus formats in display info structure.
791 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
792 * a full list of available formats.
794 int drm_display_info_set_bus_formats(struct drm_display_info *info,
796 unsigned int num_formats)
800 if (!formats && num_formats)
803 if (formats && num_formats) {
804 fmts = kmemdup(formats, sizeof(*formats) * num_formats,
810 kfree(info->bus_formats);
811 info->bus_formats = fmts;
812 info->num_bus_formats = num_formats;
816 EXPORT_SYMBOL(drm_display_info_set_bus_formats);
819 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
820 * @connector: connector to quwery
822 * The kernel supports per-connector configration of its consoles through
823 * use of the video= parameter. This function parses that option and
824 * extracts the user's specified mode (or enable/disable status) for a
825 * particular connector. This is typically only used during the early fbdev
828 static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
830 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
833 if (fb_get_options(connector->name, &option))
836 if (!drm_mode_parse_command_line_for_connector(option,
844 switch (mode->force) {
848 case DRM_FORCE_ON_DIGITAL:
857 DRM_INFO("forcing %s connector %s\n", connector->name, s);
858 connector->force = mode->force;
861 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
863 mode->xres, mode->yres,
864 mode->refresh_specified ? mode->refresh : 60,
865 mode->rb ? " reduced blanking" : "",
866 mode->margins ? " with margins" : "",
867 mode->interlace ? " interlaced" : "");
871 * drm_connector_init - Init a preallocated connector
873 * @connector: the connector to init
874 * @funcs: callbacks for this connector
875 * @connector_type: user visible type of the connector
877 * Initialises a preallocated connector. Connectors should be
878 * subclassed as part of driver connector objects.
881 * Zero on success, error code on failure.
883 int drm_connector_init(struct drm_device *dev,
884 struct drm_connector *connector,
885 const struct drm_connector_funcs *funcs,
888 struct drm_mode_config *config = &dev->mode_config;
890 struct ida *connector_ida =
891 &drm_connector_enum_list[connector_type].ida;
893 drm_modeset_lock_all(dev);
895 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false, NULL);
899 connector->base.properties = &connector->properties;
900 connector->dev = dev;
901 connector->funcs = funcs;
903 connector->connector_id = ida_simple_get(&config->connector_ida, 0, 0, GFP_KERNEL);
904 if (connector->connector_id < 0) {
905 ret = connector->connector_id;
909 connector->connector_type = connector_type;
910 connector->connector_type_id =
911 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
912 if (connector->connector_type_id < 0) {
913 ret = connector->connector_type_id;
917 kasprintf(GFP_KERNEL, "%s-%d",
918 drm_connector_enum_list[connector_type].name,
919 connector->connector_type_id);
920 if (!connector->name) {
922 goto out_put_type_id;
925 INIT_LIST_HEAD(&connector->probed_modes);
926 INIT_LIST_HEAD(&connector->modes);
927 connector->edid_blob_ptr = NULL;
928 connector->status = connector_status_unknown;
930 drm_connector_get_cmdline_mode(connector);
932 /* We should add connectors at the end to avoid upsetting the connector
934 list_add_tail(&connector->head, &config->connector_list);
935 config->num_connector++;
937 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
938 drm_object_attach_property(&connector->base,
939 config->edid_property,
942 drm_object_attach_property(&connector->base,
943 config->dpms_property, 0);
945 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
946 drm_object_attach_property(&connector->base, config->prop_crtc_id, 0);
949 connector->debugfs_entry = NULL;
952 ida_remove(connector_ida, connector->connector_type_id);
955 ida_remove(&config->connector_ida, connector->connector_id);
958 drm_mode_object_unregister(dev, &connector->base);
961 drm_modeset_unlock_all(dev);
965 EXPORT_SYMBOL(drm_connector_init);
968 * drm_connector_cleanup - cleans up an initialised connector
969 * @connector: connector to cleanup
971 * Cleans up the connector but doesn't free the object.
973 void drm_connector_cleanup(struct drm_connector *connector)
975 struct drm_device *dev = connector->dev;
976 struct drm_display_mode *mode, *t;
978 if (connector->tile_group) {
979 drm_mode_put_tile_group(dev, connector->tile_group);
980 connector->tile_group = NULL;
983 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
984 drm_mode_remove(connector, mode);
986 list_for_each_entry_safe(mode, t, &connector->modes, head)
987 drm_mode_remove(connector, mode);
989 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
990 connector->connector_type_id);
992 ida_remove(&dev->mode_config.connector_ida,
993 connector->connector_id);
995 kfree(connector->display_info.bus_formats);
996 drm_mode_object_unregister(dev, &connector->base);
997 kfree(connector->name);
998 connector->name = NULL;
999 list_del(&connector->head);
1000 dev->mode_config.num_connector--;
1002 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
1003 if (connector->state && connector->funcs->atomic_destroy_state)
1004 connector->funcs->atomic_destroy_state(connector,
1007 memset(connector, 0, sizeof(*connector));
1009 EXPORT_SYMBOL(drm_connector_cleanup);
1012 * drm_connector_register - register a connector
1013 * @connector: the connector to register
1015 * Register userspace interfaces for a connector
1018 * Zero on success, error code on failure.
1020 int drm_connector_register(struct drm_connector *connector)
1024 drm_mode_object_register(connector->dev, &connector->base);
1026 ret = drm_sysfs_connector_add(connector);
1030 ret = drm_debugfs_connector_add(connector);
1032 drm_sysfs_connector_remove(connector);
1038 EXPORT_SYMBOL(drm_connector_register);
1041 * drm_connector_unregister - unregister a connector
1042 * @connector: the connector to unregister
1044 * Unregister userspace interfaces for a connector
1046 void drm_connector_unregister(struct drm_connector *connector)
1048 drm_sysfs_connector_remove(connector);
1049 drm_debugfs_connector_remove(connector);
1051 EXPORT_SYMBOL(drm_connector_unregister);
1054 * drm_connector_register_all - register all connectors
1057 * This function registers all connectors in sysfs and other places so that
1058 * userspace can start to access them. Drivers can call it after calling
1059 * drm_dev_register() to complete the device registration, if they don't call
1060 * drm_connector_register() on each connector individually.
1062 * When a device is unplugged and should be removed from userspace access,
1063 * call drm_connector_unregister_all(), which is the inverse of this
1067 * Zero on success, error code on failure.
1069 int drm_connector_register_all(struct drm_device *dev)
1071 struct drm_connector *connector;
1074 mutex_lock(&dev->mode_config.mutex);
1076 drm_for_each_connector(connector, dev) {
1077 ret = drm_connector_register(connector);
1082 mutex_unlock(&dev->mode_config.mutex);
1087 mutex_unlock(&dev->mode_config.mutex);
1088 drm_connector_unregister_all(dev);
1091 EXPORT_SYMBOL(drm_connector_register_all);
1094 * drm_connector_unregister_all - unregister connector userspace interfaces
1097 * This functions unregisters all connectors from sysfs and other places so
1098 * that userspace can no longer access them. Drivers should call this as the
1099 * first step tearing down the device instace, or when the underlying
1100 * physical device disappeared (e.g. USB unplug), right before calling
1101 * drm_dev_unregister().
1103 void drm_connector_unregister_all(struct drm_device *dev)
1105 struct drm_connector *connector;
1107 /* FIXME: taking the mode config mutex ends up in a clash with sysfs */
1108 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1109 drm_connector_unregister(connector);
1111 EXPORT_SYMBOL(drm_connector_unregister_all);
1114 * drm_encoder_init - Init a preallocated encoder
1116 * @encoder: the encoder to init
1117 * @funcs: callbacks for this encoder
1118 * @encoder_type: user visible type of the encoder
1119 * @name: printf style format string for the encoder name, or NULL for default name
1121 * Initialises a preallocated encoder. Encoder should be
1122 * subclassed as part of driver encoder objects.
1125 * Zero on success, error code on failure.
1127 int drm_encoder_init(struct drm_device *dev,
1128 struct drm_encoder *encoder,
1129 const struct drm_encoder_funcs *funcs,
1130 int encoder_type, const char *name, ...)
1134 drm_modeset_lock_all(dev);
1136 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1141 encoder->encoder_type = encoder_type;
1142 encoder->funcs = funcs;
1147 encoder->name = kvasprintf(GFP_KERNEL, name, ap);
1150 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1151 drm_encoder_enum_list[encoder_type].name,
1154 if (!encoder->name) {
1159 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1160 dev->mode_config.num_encoder++;
1164 drm_mode_object_unregister(dev, &encoder->base);
1167 drm_modeset_unlock_all(dev);
1171 EXPORT_SYMBOL(drm_encoder_init);
1174 * drm_encoder_index - find the index of a registered encoder
1175 * @encoder: encoder to find index for
1177 * Given a registered encoder, return the index of that encoder within a DRM
1178 * device's list of encoders.
1180 unsigned int drm_encoder_index(struct drm_encoder *encoder)
1182 unsigned int index = 0;
1183 struct drm_encoder *tmp;
1185 drm_for_each_encoder(tmp, encoder->dev) {
1194 EXPORT_SYMBOL(drm_encoder_index);
1197 * drm_encoder_cleanup - cleans up an initialised encoder
1198 * @encoder: encoder to cleanup
1200 * Cleans up the encoder but doesn't free the object.
1202 void drm_encoder_cleanup(struct drm_encoder *encoder)
1204 struct drm_device *dev = encoder->dev;
1206 drm_modeset_lock_all(dev);
1207 drm_mode_object_unregister(dev, &encoder->base);
1208 kfree(encoder->name);
1209 list_del(&encoder->head);
1210 dev->mode_config.num_encoder--;
1211 drm_modeset_unlock_all(dev);
1213 memset(encoder, 0, sizeof(*encoder));
1215 EXPORT_SYMBOL(drm_encoder_cleanup);
1217 static unsigned int drm_num_planes(struct drm_device *dev)
1219 unsigned int num = 0;
1220 struct drm_plane *tmp;
1222 drm_for_each_plane(tmp, dev) {
1230 * drm_universal_plane_init - Initialize a new universal plane object
1232 * @plane: plane object to init
1233 * @possible_crtcs: bitmask of possible CRTCs
1234 * @funcs: callbacks for the new plane
1235 * @formats: array of supported formats (%DRM_FORMAT_*)
1236 * @format_count: number of elements in @formats
1237 * @type: type of plane (overlay, primary, cursor)
1238 * @name: printf style format string for the plane name, or NULL for default name
1240 * Initializes a plane object of type @type.
1243 * Zero on success, error code on failure.
1245 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1246 unsigned long possible_crtcs,
1247 const struct drm_plane_funcs *funcs,
1248 const uint32_t *formats, unsigned int format_count,
1249 enum drm_plane_type type,
1250 const char *name, ...)
1252 struct drm_mode_config *config = &dev->mode_config;
1255 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1259 drm_modeset_lock_init(&plane->mutex);
1261 plane->base.properties = &plane->properties;
1263 plane->funcs = funcs;
1264 plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
1266 if (!plane->format_types) {
1267 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1268 drm_mode_object_unregister(dev, &plane->base);
1276 plane->name = kvasprintf(GFP_KERNEL, name, ap);
1279 plane->name = kasprintf(GFP_KERNEL, "plane-%d",
1280 drm_num_planes(dev));
1283 kfree(plane->format_types);
1284 drm_mode_object_unregister(dev, &plane->base);
1288 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1289 plane->format_count = format_count;
1290 plane->possible_crtcs = possible_crtcs;
1293 list_add_tail(&plane->head, &config->plane_list);
1294 config->num_total_plane++;
1295 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1296 config->num_overlay_plane++;
1298 drm_object_attach_property(&plane->base,
1299 config->plane_type_property,
1302 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
1303 drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
1304 drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
1305 drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
1306 drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
1307 drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
1308 drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
1309 drm_object_attach_property(&plane->base, config->prop_src_x, 0);
1310 drm_object_attach_property(&plane->base, config->prop_src_y, 0);
1311 drm_object_attach_property(&plane->base, config->prop_src_w, 0);
1312 drm_object_attach_property(&plane->base, config->prop_src_h, 0);
1317 EXPORT_SYMBOL(drm_universal_plane_init);
1320 * drm_plane_init - Initialize a legacy plane
1322 * @plane: plane object to init
1323 * @possible_crtcs: bitmask of possible CRTCs
1324 * @funcs: callbacks for the new plane
1325 * @formats: array of supported formats (%DRM_FORMAT_*)
1326 * @format_count: number of elements in @formats
1327 * @is_primary: plane type (primary vs overlay)
1329 * Legacy API to initialize a DRM plane.
1331 * New drivers should call drm_universal_plane_init() instead.
1334 * Zero on success, error code on failure.
1336 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1337 unsigned long possible_crtcs,
1338 const struct drm_plane_funcs *funcs,
1339 const uint32_t *formats, unsigned int format_count,
1342 enum drm_plane_type type;
1344 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1345 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1346 formats, format_count, type, NULL);
1348 EXPORT_SYMBOL(drm_plane_init);
1351 * drm_plane_cleanup - Clean up the core plane usage
1352 * @plane: plane to cleanup
1354 * This function cleans up @plane and removes it from the DRM mode setting
1355 * core. Note that the function does *not* free the plane structure itself,
1356 * this is the responsibility of the caller.
1358 void drm_plane_cleanup(struct drm_plane *plane)
1360 struct drm_device *dev = plane->dev;
1362 drm_modeset_lock_all(dev);
1363 kfree(plane->format_types);
1364 drm_mode_object_unregister(dev, &plane->base);
1366 BUG_ON(list_empty(&plane->head));
1368 list_del(&plane->head);
1369 dev->mode_config.num_total_plane--;
1370 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1371 dev->mode_config.num_overlay_plane--;
1372 drm_modeset_unlock_all(dev);
1374 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1375 if (plane->state && plane->funcs->atomic_destroy_state)
1376 plane->funcs->atomic_destroy_state(plane, plane->state);
1380 memset(plane, 0, sizeof(*plane));
1382 EXPORT_SYMBOL(drm_plane_cleanup);
1385 * drm_plane_index - find the index of a registered plane
1386 * @plane: plane to find index for
1388 * Given a registered plane, return the index of that CRTC within a DRM
1389 * device's list of planes.
1391 unsigned int drm_plane_index(struct drm_plane *plane)
1393 unsigned int index = 0;
1394 struct drm_plane *tmp;
1396 drm_for_each_plane(tmp, plane->dev) {
1405 EXPORT_SYMBOL(drm_plane_index);
1408 * drm_plane_from_index - find the registered plane at an index
1410 * @idx: index of registered plane to find for
1412 * Given a plane index, return the registered plane from DRM device's
1413 * list of planes with matching index.
1416 drm_plane_from_index(struct drm_device *dev, int idx)
1418 struct drm_plane *plane;
1421 drm_for_each_plane(plane, dev) {
1428 EXPORT_SYMBOL(drm_plane_from_index);
1431 * drm_plane_force_disable - Forcibly disable a plane
1432 * @plane: plane to disable
1434 * Forces the plane to be disabled.
1436 * Used when the plane's current framebuffer is destroyed,
1437 * and when restoring fbdev mode.
1439 void drm_plane_force_disable(struct drm_plane *plane)
1446 plane->old_fb = plane->fb;
1447 ret = plane->funcs->disable_plane(plane);
1449 DRM_ERROR("failed to disable plane with busy fb\n");
1450 plane->old_fb = NULL;
1453 /* disconnect the plane from the fb and crtc: */
1454 drm_framebuffer_unreference(plane->old_fb);
1455 plane->old_fb = NULL;
1459 EXPORT_SYMBOL(drm_plane_force_disable);
1461 static int drm_mode_create_standard_properties(struct drm_device *dev)
1463 struct drm_property *prop;
1466 * Standard properties (apply to all connectors)
1468 prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1469 DRM_MODE_PROP_IMMUTABLE,
1473 dev->mode_config.edid_property = prop;
1475 prop = drm_property_create_enum(dev, 0,
1476 "DPMS", drm_dpms_enum_list,
1477 ARRAY_SIZE(drm_dpms_enum_list));
1480 dev->mode_config.dpms_property = prop;
1482 prop = drm_property_create(dev,
1483 DRM_MODE_PROP_BLOB |
1484 DRM_MODE_PROP_IMMUTABLE,
1488 dev->mode_config.path_property = prop;
1490 prop = drm_property_create(dev,
1491 DRM_MODE_PROP_BLOB |
1492 DRM_MODE_PROP_IMMUTABLE,
1496 dev->mode_config.tile_property = prop;
1498 prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1499 "type", drm_plane_type_enum_list,
1500 ARRAY_SIZE(drm_plane_type_enum_list));
1503 dev->mode_config.plane_type_property = prop;
1505 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1506 "SRC_X", 0, UINT_MAX);
1509 dev->mode_config.prop_src_x = prop;
1511 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1512 "SRC_Y", 0, UINT_MAX);
1515 dev->mode_config.prop_src_y = prop;
1517 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1518 "SRC_W", 0, UINT_MAX);
1521 dev->mode_config.prop_src_w = prop;
1523 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1524 "SRC_H", 0, UINT_MAX);
1527 dev->mode_config.prop_src_h = prop;
1529 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1530 "CRTC_X", INT_MIN, INT_MAX);
1533 dev->mode_config.prop_crtc_x = prop;
1535 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1536 "CRTC_Y", INT_MIN, INT_MAX);
1539 dev->mode_config.prop_crtc_y = prop;
1541 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1542 "CRTC_W", 0, INT_MAX);
1545 dev->mode_config.prop_crtc_w = prop;
1547 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1548 "CRTC_H", 0, INT_MAX);
1551 dev->mode_config.prop_crtc_h = prop;
1553 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1554 "FB_ID", DRM_MODE_OBJECT_FB);
1557 dev->mode_config.prop_fb_id = prop;
1559 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1560 "CRTC_ID", DRM_MODE_OBJECT_CRTC);
1563 dev->mode_config.prop_crtc_id = prop;
1565 prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
1569 dev->mode_config.prop_active = prop;
1571 prop = drm_property_create(dev,
1572 DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB,
1576 dev->mode_config.prop_mode_id = prop;
1578 prop = drm_property_create(dev,
1583 dev->mode_config.degamma_lut_property = prop;
1585 prop = drm_property_create_range(dev,
1586 DRM_MODE_PROP_IMMUTABLE,
1587 "DEGAMMA_LUT_SIZE", 0, UINT_MAX);
1590 dev->mode_config.degamma_lut_size_property = prop;
1592 prop = drm_property_create(dev,
1597 dev->mode_config.ctm_property = prop;
1599 prop = drm_property_create(dev,
1604 dev->mode_config.gamma_lut_property = prop;
1606 prop = drm_property_create_range(dev,
1607 DRM_MODE_PROP_IMMUTABLE,
1608 "GAMMA_LUT_SIZE", 0, UINT_MAX);
1611 dev->mode_config.gamma_lut_size_property = prop;
1617 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1620 * Called by a driver the first time a DVI-I connector is made.
1622 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1624 struct drm_property *dvi_i_selector;
1625 struct drm_property *dvi_i_subconnector;
1627 if (dev->mode_config.dvi_i_select_subconnector_property)
1631 drm_property_create_enum(dev, 0,
1632 "select subconnector",
1633 drm_dvi_i_select_enum_list,
1634 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1635 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1637 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1639 drm_dvi_i_subconnector_enum_list,
1640 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1641 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1645 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1648 * drm_create_tv_properties - create TV specific connector properties
1650 * @num_modes: number of different TV formats (modes) supported
1651 * @modes: array of pointers to strings containing name of each format
1653 * Called by a driver's TV initialization routine, this function creates
1654 * the TV specific connector properties for a given device. Caller is
1655 * responsible for allocating a list of format names and passing them to
1658 int drm_mode_create_tv_properties(struct drm_device *dev,
1659 unsigned int num_modes,
1660 const char * const modes[])
1662 struct drm_property *tv_selector;
1663 struct drm_property *tv_subconnector;
1666 if (dev->mode_config.tv_select_subconnector_property)
1670 * Basic connector properties
1672 tv_selector = drm_property_create_enum(dev, 0,
1673 "select subconnector",
1674 drm_tv_select_enum_list,
1675 ARRAY_SIZE(drm_tv_select_enum_list));
1679 dev->mode_config.tv_select_subconnector_property = tv_selector;
1682 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1684 drm_tv_subconnector_enum_list,
1685 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1686 if (!tv_subconnector)
1688 dev->mode_config.tv_subconnector_property = tv_subconnector;
1691 * Other, TV specific properties: margins & TV modes.
1693 dev->mode_config.tv_left_margin_property =
1694 drm_property_create_range(dev, 0, "left margin", 0, 100);
1695 if (!dev->mode_config.tv_left_margin_property)
1698 dev->mode_config.tv_right_margin_property =
1699 drm_property_create_range(dev, 0, "right margin", 0, 100);
1700 if (!dev->mode_config.tv_right_margin_property)
1703 dev->mode_config.tv_top_margin_property =
1704 drm_property_create_range(dev, 0, "top margin", 0, 100);
1705 if (!dev->mode_config.tv_top_margin_property)
1708 dev->mode_config.tv_bottom_margin_property =
1709 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1710 if (!dev->mode_config.tv_bottom_margin_property)
1713 dev->mode_config.tv_mode_property =
1714 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1716 if (!dev->mode_config.tv_mode_property)
1719 for (i = 0; i < num_modes; i++)
1720 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1723 dev->mode_config.tv_brightness_property =
1724 drm_property_create_range(dev, 0, "brightness", 0, 100);
1725 if (!dev->mode_config.tv_brightness_property)
1728 dev->mode_config.tv_contrast_property =
1729 drm_property_create_range(dev, 0, "contrast", 0, 100);
1730 if (!dev->mode_config.tv_contrast_property)
1733 dev->mode_config.tv_flicker_reduction_property =
1734 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1735 if (!dev->mode_config.tv_flicker_reduction_property)
1738 dev->mode_config.tv_overscan_property =
1739 drm_property_create_range(dev, 0, "overscan", 0, 100);
1740 if (!dev->mode_config.tv_overscan_property)
1743 dev->mode_config.tv_saturation_property =
1744 drm_property_create_range(dev, 0, "saturation", 0, 100);
1745 if (!dev->mode_config.tv_saturation_property)
1748 dev->mode_config.tv_hue_property =
1749 drm_property_create_range(dev, 0, "hue", 0, 100);
1750 if (!dev->mode_config.tv_hue_property)
1757 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1760 * drm_mode_create_scaling_mode_property - create scaling mode property
1763 * Called by a driver the first time it's needed, must be attached to desired
1766 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1768 struct drm_property *scaling_mode;
1770 if (dev->mode_config.scaling_mode_property)
1774 drm_property_create_enum(dev, 0, "scaling mode",
1775 drm_scaling_mode_enum_list,
1776 ARRAY_SIZE(drm_scaling_mode_enum_list));
1778 dev->mode_config.scaling_mode_property = scaling_mode;
1782 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1785 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1788 * Called by a driver the first time it's needed, must be attached to desired
1792 * Zero on success, negative errno on failure.
1794 int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1796 if (dev->mode_config.aspect_ratio_property)
1799 dev->mode_config.aspect_ratio_property =
1800 drm_property_create_enum(dev, 0, "aspect ratio",
1801 drm_aspect_ratio_enum_list,
1802 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1804 if (dev->mode_config.aspect_ratio_property == NULL)
1809 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1812 * drm_mode_create_dirty_property - create dirty property
1815 * Called by a driver the first time it's needed, must be attached to desired
1818 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1820 struct drm_property *dirty_info;
1822 if (dev->mode_config.dirty_info_property)
1826 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1828 drm_dirty_info_enum_list,
1829 ARRAY_SIZE(drm_dirty_info_enum_list));
1830 dev->mode_config.dirty_info_property = dirty_info;
1834 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1837 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1840 * Create the the suggested x/y offset property for connectors.
1842 int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1844 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1847 dev->mode_config.suggested_x_property =
1848 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1850 dev->mode_config.suggested_y_property =
1851 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1853 if (dev->mode_config.suggested_x_property == NULL ||
1854 dev->mode_config.suggested_y_property == NULL)
1858 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1861 * drm_mode_getresources - get graphics configuration
1862 * @dev: drm device for the ioctl
1863 * @data: data pointer for the ioctl
1864 * @file_priv: drm file for the ioctl call
1866 * Construct a set of configuration description structures and return
1867 * them to the user, including CRTC, connector and framebuffer configuration.
1869 * Called by the user via ioctl.
1872 * Zero on success, negative errno on failure.
1874 int drm_mode_getresources(struct drm_device *dev, void *data,
1875 struct drm_file *file_priv)
1877 struct drm_mode_card_res *card_res = data;
1878 struct list_head *lh;
1879 struct drm_framebuffer *fb;
1880 struct drm_connector *connector;
1881 struct drm_crtc *crtc;
1882 struct drm_encoder *encoder;
1884 int connector_count = 0;
1887 int encoder_count = 0;
1889 uint32_t __user *fb_id;
1890 uint32_t __user *crtc_id;
1891 uint32_t __user *connector_id;
1892 uint32_t __user *encoder_id;
1894 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1898 mutex_lock(&file_priv->fbs_lock);
1900 * For the non-control nodes we need to limit the list of resources
1901 * by IDs in the group list for this node
1903 list_for_each(lh, &file_priv->fbs)
1906 /* handle this in 4 parts */
1908 if (card_res->count_fbs >= fb_count) {
1910 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1911 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1912 if (put_user(fb->base.id, fb_id + copied)) {
1913 mutex_unlock(&file_priv->fbs_lock);
1919 card_res->count_fbs = fb_count;
1920 mutex_unlock(&file_priv->fbs_lock);
1922 /* mode_config.mutex protects the connector list against e.g. DP MST
1923 * connector hot-adding. CRTC/Plane lists are invariant. */
1924 mutex_lock(&dev->mode_config.mutex);
1925 drm_for_each_crtc(crtc, dev)
1928 drm_for_each_connector(connector, dev)
1931 drm_for_each_encoder(encoder, dev)
1934 card_res->max_height = dev->mode_config.max_height;
1935 card_res->min_height = dev->mode_config.min_height;
1936 card_res->max_width = dev->mode_config.max_width;
1937 card_res->min_width = dev->mode_config.min_width;
1940 if (card_res->count_crtcs >= crtc_count) {
1942 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1943 drm_for_each_crtc(crtc, dev) {
1944 DRM_DEBUG_KMS("[CRTC:%d:%s]\n",
1945 crtc->base.id, crtc->name);
1946 if (put_user(crtc->base.id, crtc_id + copied)) {
1953 card_res->count_crtcs = crtc_count;
1956 if (card_res->count_encoders >= encoder_count) {
1958 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1959 drm_for_each_encoder(encoder, dev) {
1960 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1962 if (put_user(encoder->base.id, encoder_id +
1970 card_res->count_encoders = encoder_count;
1973 if (card_res->count_connectors >= connector_count) {
1975 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1976 drm_for_each_connector(connector, dev) {
1977 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1980 if (put_user(connector->base.id,
1981 connector_id + copied)) {
1988 card_res->count_connectors = connector_count;
1990 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1991 card_res->count_connectors, card_res->count_encoders);
1994 mutex_unlock(&dev->mode_config.mutex);
1999 * drm_mode_getcrtc - get CRTC configuration
2000 * @dev: drm device for the ioctl
2001 * @data: data pointer for the ioctl
2002 * @file_priv: drm file for the ioctl call
2004 * Construct a CRTC configuration structure to return to the user.
2006 * Called by the user via ioctl.
2009 * Zero on success, negative errno on failure.
2011 int drm_mode_getcrtc(struct drm_device *dev,
2012 void *data, struct drm_file *file_priv)
2014 struct drm_mode_crtc *crtc_resp = data;
2015 struct drm_crtc *crtc;
2017 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2020 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
2024 drm_modeset_lock_crtc(crtc, crtc->primary);
2025 crtc_resp->gamma_size = crtc->gamma_size;
2026 if (crtc->primary->fb)
2027 crtc_resp->fb_id = crtc->primary->fb->base.id;
2029 crtc_resp->fb_id = 0;
2032 crtc_resp->x = crtc->primary->state->src_x >> 16;
2033 crtc_resp->y = crtc->primary->state->src_y >> 16;
2034 if (crtc->state->enable) {
2035 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode);
2036 crtc_resp->mode_valid = 1;
2039 crtc_resp->mode_valid = 0;
2042 crtc_resp->x = crtc->x;
2043 crtc_resp->y = crtc->y;
2044 if (crtc->enabled) {
2045 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode);
2046 crtc_resp->mode_valid = 1;
2049 crtc_resp->mode_valid = 0;
2052 drm_modeset_unlock_crtc(crtc);
2057 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
2058 const struct drm_file *file_priv)
2061 * If user-space hasn't configured the driver to expose the stereo 3D
2062 * modes, don't expose them.
2064 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
2070 static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
2072 /* For atomic drivers only state objects are synchronously updated and
2073 * protected by modeset locks, so check those first. */
2074 if (connector->state)
2075 return connector->state->best_encoder;
2076 return connector->encoder;
2079 /* helper for getconnector and getproperties ioctls */
2080 static int get_properties(struct drm_mode_object *obj, bool atomic,
2081 uint32_t __user *prop_ptr, uint64_t __user *prop_values,
2082 uint32_t *arg_count_props)
2087 props_count = obj->properties->count;
2089 props_count -= obj->properties->atomic_count;
2091 if ((*arg_count_props >= props_count) && props_count) {
2092 for (i = 0, copied = 0; copied < props_count; i++) {
2093 struct drm_property *prop = obj->properties->properties[i];
2096 if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
2099 ret = drm_object_property_get_value(obj, prop, &val);
2103 if (put_user(prop->base.id, prop_ptr + copied))
2106 if (put_user(val, prop_values + copied))
2112 *arg_count_props = props_count;
2118 * drm_mode_getconnector - get connector configuration
2119 * @dev: drm device for the ioctl
2120 * @data: data pointer for the ioctl
2121 * @file_priv: drm file for the ioctl call
2123 * Construct a connector configuration structure to return to the user.
2125 * Called by the user via ioctl.
2128 * Zero on success, negative errno on failure.
2130 int drm_mode_getconnector(struct drm_device *dev, void *data,
2131 struct drm_file *file_priv)
2133 struct drm_mode_get_connector *out_resp = data;
2134 struct drm_connector *connector;
2135 struct drm_encoder *encoder;
2136 struct drm_display_mode *mode;
2138 int encoders_count = 0;
2142 struct drm_mode_modeinfo u_mode;
2143 struct drm_mode_modeinfo __user *mode_ptr;
2144 uint32_t __user *encoder_ptr;
2146 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2149 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
2151 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
2153 mutex_lock(&dev->mode_config.mutex);
2155 connector = drm_connector_find(dev, out_resp->connector_id);
2161 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
2162 if (connector->encoder_ids[i] != 0)
2165 if (out_resp->count_modes == 0) {
2166 connector->funcs->fill_modes(connector,
2167 dev->mode_config.max_width,
2168 dev->mode_config.max_height);
2171 /* delayed so we get modes regardless of pre-fill_modes state */
2172 list_for_each_entry(mode, &connector->modes, head)
2173 if (drm_mode_expose_to_userspace(mode, file_priv))
2176 out_resp->connector_id = connector->base.id;
2177 out_resp->connector_type = connector->connector_type;
2178 out_resp->connector_type_id = connector->connector_type_id;
2179 out_resp->mm_width = connector->display_info.width_mm;
2180 out_resp->mm_height = connector->display_info.height_mm;
2181 out_resp->subpixel = connector->display_info.subpixel_order;
2182 out_resp->connection = connector->status;
2184 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2185 encoder = drm_connector_get_encoder(connector);
2187 out_resp->encoder_id = encoder->base.id;
2189 out_resp->encoder_id = 0;
2192 * This ioctl is called twice, once to determine how much space is
2193 * needed, and the 2nd time to fill it.
2195 if ((out_resp->count_modes >= mode_count) && mode_count) {
2197 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
2198 list_for_each_entry(mode, &connector->modes, head) {
2199 if (!drm_mode_expose_to_userspace(mode, file_priv))
2202 drm_mode_convert_to_umode(&u_mode, mode);
2203 if (copy_to_user(mode_ptr + copied,
2204 &u_mode, sizeof(u_mode))) {
2211 out_resp->count_modes = mode_count;
2213 ret = get_properties(&connector->base, file_priv->atomic,
2214 (uint32_t __user *)(unsigned long)(out_resp->props_ptr),
2215 (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr),
2216 &out_resp->count_props);
2220 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2222 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
2223 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2224 if (connector->encoder_ids[i] != 0) {
2225 if (put_user(connector->encoder_ids[i],
2226 encoder_ptr + copied)) {
2234 out_resp->count_encoders = encoders_count;
2237 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2240 mutex_unlock(&dev->mode_config.mutex);
2245 static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2247 struct drm_connector *connector;
2248 struct drm_device *dev = encoder->dev;
2249 bool uses_atomic = false;
2251 /* For atomic drivers only state objects are synchronously updated and
2252 * protected by modeset locks, so check those first. */
2253 drm_for_each_connector(connector, dev) {
2254 if (!connector->state)
2259 if (connector->state->best_encoder != encoder)
2262 return connector->state->crtc;
2265 /* Don't return stale data (e.g. pending async disable). */
2269 return encoder->crtc;
2273 * drm_mode_getencoder - get encoder configuration
2274 * @dev: drm device for the ioctl
2275 * @data: data pointer for the ioctl
2276 * @file_priv: drm file for the ioctl call
2278 * Construct a encoder configuration structure to return to the user.
2280 * Called by the user via ioctl.
2283 * Zero on success, negative errno on failure.
2285 int drm_mode_getencoder(struct drm_device *dev, void *data,
2286 struct drm_file *file_priv)
2288 struct drm_mode_get_encoder *enc_resp = data;
2289 struct drm_encoder *encoder;
2290 struct drm_crtc *crtc;
2292 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2295 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
2299 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2300 crtc = drm_encoder_get_crtc(encoder);
2302 enc_resp->crtc_id = crtc->base.id;
2304 enc_resp->crtc_id = 0;
2305 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2307 enc_resp->encoder_type = encoder->encoder_type;
2308 enc_resp->encoder_id = encoder->base.id;
2309 enc_resp->possible_crtcs = encoder->possible_crtcs;
2310 enc_resp->possible_clones = encoder->possible_clones;
2316 * drm_mode_getplane_res - enumerate all plane resources
2319 * @file_priv: DRM file info
2321 * Construct a list of plane ids to return to the user.
2323 * Called by the user via ioctl.
2326 * Zero on success, negative errno on failure.
2328 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2329 struct drm_file *file_priv)
2331 struct drm_mode_get_plane_res *plane_resp = data;
2332 struct drm_mode_config *config;
2333 struct drm_plane *plane;
2334 uint32_t __user *plane_ptr;
2336 unsigned num_planes;
2338 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2341 config = &dev->mode_config;
2343 if (file_priv->universal_planes)
2344 num_planes = config->num_total_plane;
2346 num_planes = config->num_overlay_plane;
2349 * This ioctl is called twice, once to determine how much space is
2350 * needed, and the 2nd time to fill it.
2353 (plane_resp->count_planes >= num_planes)) {
2354 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2356 /* Plane lists are invariant, no locking needed. */
2357 drm_for_each_plane(plane, dev) {
2359 * Unless userspace set the 'universal planes'
2360 * capability bit, only advertise overlays.
2362 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2363 !file_priv->universal_planes)
2366 if (put_user(plane->base.id, plane_ptr + copied))
2371 plane_resp->count_planes = num_planes;
2377 * drm_mode_getplane - get plane configuration
2380 * @file_priv: DRM file info
2382 * Construct a plane configuration structure to return to the user.
2384 * Called by the user via ioctl.
2387 * Zero on success, negative errno on failure.
2389 int drm_mode_getplane(struct drm_device *dev, void *data,
2390 struct drm_file *file_priv)
2392 struct drm_mode_get_plane *plane_resp = data;
2393 struct drm_plane *plane;
2394 uint32_t __user *format_ptr;
2396 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2399 plane = drm_plane_find(dev, plane_resp->plane_id);
2403 drm_modeset_lock(&plane->mutex, NULL);
2405 plane_resp->crtc_id = plane->crtc->base.id;
2407 plane_resp->crtc_id = 0;
2410 plane_resp->fb_id = plane->fb->base.id;
2412 plane_resp->fb_id = 0;
2413 drm_modeset_unlock(&plane->mutex);
2415 plane_resp->plane_id = plane->base.id;
2416 plane_resp->possible_crtcs = plane->possible_crtcs;
2417 plane_resp->gamma_size = 0;
2420 * This ioctl is called twice, once to determine how much space is
2421 * needed, and the 2nd time to fill it.
2423 if (plane->format_count &&
2424 (plane_resp->count_format_types >= plane->format_count)) {
2425 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2426 if (copy_to_user(format_ptr,
2427 plane->format_types,
2428 sizeof(uint32_t) * plane->format_count)) {
2432 plane_resp->count_format_types = plane->format_count;
2438 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2439 * @plane: plane to check for format support
2440 * @format: the pixel format
2443 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2446 int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format)
2450 for (i = 0; i < plane->format_count; i++) {
2451 if (format == plane->format_types[i])
2458 static int check_src_coords(uint32_t src_x, uint32_t src_y,
2459 uint32_t src_w, uint32_t src_h,
2460 const struct drm_framebuffer *fb)
2462 unsigned int fb_width, fb_height;
2464 fb_width = fb->width << 16;
2465 fb_height = fb->height << 16;
2467 /* Make sure source coordinates are inside the fb. */
2468 if (src_w > fb_width ||
2469 src_x > fb_width - src_w ||
2470 src_h > fb_height ||
2471 src_y > fb_height - src_h) {
2472 DRM_DEBUG_KMS("Invalid source coordinates "
2473 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2474 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2475 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2476 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2477 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2485 * setplane_internal - setplane handler for internal callers
2487 * Note that we assume an extra reference has already been taken on fb. If the
2488 * update fails, this reference will be dropped before return; if it succeeds,
2489 * the previous framebuffer (if any) will be unreferenced instead.
2491 * src_{x,y,w,h} are provided in 16.16 fixed point format
2493 static int __setplane_internal(struct drm_plane *plane,
2494 struct drm_crtc *crtc,
2495 struct drm_framebuffer *fb,
2496 int32_t crtc_x, int32_t crtc_y,
2497 uint32_t crtc_w, uint32_t crtc_h,
2498 /* src_{x,y,w,h} values are 16.16 fixed point */
2499 uint32_t src_x, uint32_t src_y,
2500 uint32_t src_w, uint32_t src_h)
2504 /* No fb means shut it down */
2506 plane->old_fb = plane->fb;
2507 ret = plane->funcs->disable_plane(plane);
2512 plane->old_fb = NULL;
2517 /* Check whether this plane is usable on this CRTC */
2518 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2519 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2524 /* Check whether this plane supports the fb pixel format. */
2525 ret = drm_plane_check_pixel_format(plane, fb->pixel_format);
2527 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2528 drm_get_format_name(fb->pixel_format));
2532 /* Give drivers some help against integer overflows */
2533 if (crtc_w > INT_MAX ||
2534 crtc_x > INT_MAX - (int32_t) crtc_w ||
2536 crtc_y > INT_MAX - (int32_t) crtc_h) {
2537 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2538 crtc_w, crtc_h, crtc_x, crtc_y);
2543 ret = check_src_coords(src_x, src_y, src_w, src_h, fb);
2547 plane->old_fb = plane->fb;
2548 ret = plane->funcs->update_plane(plane, crtc, fb,
2549 crtc_x, crtc_y, crtc_w, crtc_h,
2550 src_x, src_y, src_w, src_h);
2556 plane->old_fb = NULL;
2561 drm_framebuffer_unreference(fb);
2563 drm_framebuffer_unreference(plane->old_fb);
2564 plane->old_fb = NULL;
2569 static int setplane_internal(struct drm_plane *plane,
2570 struct drm_crtc *crtc,
2571 struct drm_framebuffer *fb,
2572 int32_t crtc_x, int32_t crtc_y,
2573 uint32_t crtc_w, uint32_t crtc_h,
2574 /* src_{x,y,w,h} values are 16.16 fixed point */
2575 uint32_t src_x, uint32_t src_y,
2576 uint32_t src_w, uint32_t src_h)
2580 drm_modeset_lock_all(plane->dev);
2581 ret = __setplane_internal(plane, crtc, fb,
2582 crtc_x, crtc_y, crtc_w, crtc_h,
2583 src_x, src_y, src_w, src_h);
2584 drm_modeset_unlock_all(plane->dev);
2590 * drm_mode_setplane - configure a plane's configuration
2592 * @data: ioctl data*
2593 * @file_priv: DRM file info
2595 * Set plane configuration, including placement, fb, scaling, and other factors.
2596 * Or pass a NULL fb to disable (planes may be disabled without providing a
2600 * Zero on success, negative errno on failure.
2602 int drm_mode_setplane(struct drm_device *dev, void *data,
2603 struct drm_file *file_priv)
2605 struct drm_mode_set_plane *plane_req = data;
2606 struct drm_plane *plane;
2607 struct drm_crtc *crtc = NULL;
2608 struct drm_framebuffer *fb = NULL;
2610 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2614 * First, find the plane, crtc, and fb objects. If not available,
2615 * we don't bother to call the driver.
2617 plane = drm_plane_find(dev, plane_req->plane_id);
2619 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2620 plane_req->plane_id);
2624 if (plane_req->fb_id) {
2625 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2627 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2632 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2634 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2635 plane_req->crtc_id);
2641 * setplane_internal will take care of deref'ing either the old or new
2642 * framebuffer depending on success.
2644 return setplane_internal(plane, crtc, fb,
2645 plane_req->crtc_x, plane_req->crtc_y,
2646 plane_req->crtc_w, plane_req->crtc_h,
2647 plane_req->src_x, plane_req->src_y,
2648 plane_req->src_w, plane_req->src_h);
2652 * drm_mode_set_config_internal - helper to call ->set_config
2653 * @set: modeset config to set
2655 * This is a little helper to wrap internal calls to the ->set_config driver
2656 * interface. The only thing it adds is correct refcounting dance.
2659 * Zero on success, negative errno on failure.
2661 int drm_mode_set_config_internal(struct drm_mode_set *set)
2663 struct drm_crtc *crtc = set->crtc;
2664 struct drm_framebuffer *fb;
2665 struct drm_crtc *tmp;
2669 * NOTE: ->set_config can also disable other crtcs (if we steal all
2670 * connectors from it), hence we need to refcount the fbs across all
2671 * crtcs. Atomic modeset will have saner semantics ...
2673 drm_for_each_crtc(tmp, crtc->dev)
2674 tmp->primary->old_fb = tmp->primary->fb;
2678 ret = crtc->funcs->set_config(set);
2680 crtc->primary->crtc = crtc;
2681 crtc->primary->fb = fb;
2684 drm_for_each_crtc(tmp, crtc->dev) {
2685 if (tmp->primary->fb)
2686 drm_framebuffer_reference(tmp->primary->fb);
2687 if (tmp->primary->old_fb)
2688 drm_framebuffer_unreference(tmp->primary->old_fb);
2689 tmp->primary->old_fb = NULL;
2694 EXPORT_SYMBOL(drm_mode_set_config_internal);
2697 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2698 * @mode: mode to query
2699 * @hdisplay: hdisplay value to fill in
2700 * @vdisplay: vdisplay value to fill in
2702 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2703 * the appropriate layout.
2705 void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
2706 int *hdisplay, int *vdisplay)
2708 struct drm_display_mode adjusted;
2710 drm_mode_copy(&adjusted, mode);
2711 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
2712 *hdisplay = adjusted.crtc_hdisplay;
2713 *vdisplay = adjusted.crtc_vdisplay;
2715 EXPORT_SYMBOL(drm_crtc_get_hv_timing);
2718 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2720 * @crtc: CRTC that framebuffer will be displayed on
2723 * @mode: mode that framebuffer will be displayed under
2724 * @fb: framebuffer to check size of
2726 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2728 const struct drm_display_mode *mode,
2729 const struct drm_framebuffer *fb)
2732 int hdisplay, vdisplay;
2734 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
2737 crtc->primary->state->rotation & (BIT(DRM_ROTATE_90) |
2738 BIT(DRM_ROTATE_270)))
2739 swap(hdisplay, vdisplay);
2741 return check_src_coords(x << 16, y << 16,
2742 hdisplay << 16, vdisplay << 16, fb);
2744 EXPORT_SYMBOL(drm_crtc_check_viewport);
2747 * drm_mode_setcrtc - set CRTC configuration
2748 * @dev: drm device for the ioctl
2749 * @data: data pointer for the ioctl
2750 * @file_priv: drm file for the ioctl call
2752 * Build a new CRTC configuration based on user request.
2754 * Called by the user via ioctl.
2757 * Zero on success, negative errno on failure.
2759 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2760 struct drm_file *file_priv)
2762 struct drm_mode_config *config = &dev->mode_config;
2763 struct drm_mode_crtc *crtc_req = data;
2764 struct drm_crtc *crtc;
2765 struct drm_connector **connector_set = NULL, *connector;
2766 struct drm_framebuffer *fb = NULL;
2767 struct drm_display_mode *mode = NULL;
2768 struct drm_mode_set set;
2769 uint32_t __user *set_connectors_ptr;
2773 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2777 * Universal plane src offsets are only 16.16, prevent havoc for
2778 * drivers using universal plane code internally.
2780 if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000)
2783 drm_modeset_lock_all(dev);
2784 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2786 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2790 DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name);
2792 if (crtc_req->mode_valid) {
2793 /* If we have a mode we need a framebuffer. */
2794 /* If we pass -1, set the mode with the currently bound fb */
2795 if (crtc_req->fb_id == -1) {
2796 if (!crtc->primary->fb) {
2797 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2801 fb = crtc->primary->fb;
2802 /* Make refcounting symmetric with the lookup path. */
2803 drm_framebuffer_reference(fb);
2805 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2807 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2814 mode = drm_mode_create(dev);
2820 ret = drm_mode_convert_umode(mode, &crtc_req->mode);
2822 DRM_DEBUG_KMS("Invalid mode\n");
2826 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2829 * Check whether the primary plane supports the fb pixel format.
2830 * Drivers not implementing the universal planes API use a
2831 * default formats list provided by the DRM core which doesn't
2832 * match real hardware capabilities. Skip the check in that
2835 if (!crtc->primary->format_default) {
2836 ret = drm_plane_check_pixel_format(crtc->primary,
2839 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2840 drm_get_format_name(fb->pixel_format));
2845 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2852 if (crtc_req->count_connectors == 0 && mode) {
2853 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2858 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2859 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2860 crtc_req->count_connectors);
2865 if (crtc_req->count_connectors > 0) {
2868 /* Avoid unbounded kernel memory allocation */
2869 if (crtc_req->count_connectors > config->num_connector) {
2874 connector_set = kmalloc_array(crtc_req->count_connectors,
2875 sizeof(struct drm_connector *),
2877 if (!connector_set) {
2882 for (i = 0; i < crtc_req->count_connectors; i++) {
2883 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2884 if (get_user(out_id, &set_connectors_ptr[i])) {
2889 connector = drm_connector_find(dev, out_id);
2891 DRM_DEBUG_KMS("Connector id %d unknown\n",
2896 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2900 connector_set[i] = connector;
2905 set.x = crtc_req->x;
2906 set.y = crtc_req->y;
2908 set.connectors = connector_set;
2909 set.num_connectors = crtc_req->count_connectors;
2911 ret = drm_mode_set_config_internal(&set);
2915 drm_framebuffer_unreference(fb);
2917 kfree(connector_set);
2918 drm_mode_destroy(dev, mode);
2919 drm_modeset_unlock_all(dev);
2924 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2925 * universal plane handler call
2926 * @crtc: crtc to update cursor for
2927 * @req: data pointer for the ioctl
2928 * @file_priv: drm file for the ioctl call
2930 * Legacy cursor ioctl's work directly with driver buffer handles. To
2931 * translate legacy ioctl calls into universal plane handler calls, we need to
2932 * wrap the native buffer handle in a drm_framebuffer.
2934 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2935 * buffer with a pitch of 4*width; the universal plane interface should be used
2936 * directly in cases where the hardware can support other buffer settings and
2937 * userspace wants to make use of these capabilities.
2940 * Zero on success, negative errno on failure.
2942 static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2943 struct drm_mode_cursor2 *req,
2944 struct drm_file *file_priv)
2946 struct drm_device *dev = crtc->dev;
2947 struct drm_framebuffer *fb = NULL;
2948 struct drm_mode_fb_cmd2 fbreq = {
2949 .width = req->width,
2950 .height = req->height,
2951 .pixel_format = DRM_FORMAT_ARGB8888,
2952 .pitches = { req->width * 4 },
2953 .handles = { req->handle },
2955 int32_t crtc_x, crtc_y;
2956 uint32_t crtc_w = 0, crtc_h = 0;
2957 uint32_t src_w = 0, src_h = 0;
2960 BUG_ON(!crtc->cursor);
2961 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
2964 * Obtain fb we'll be using (either new or existing) and take an extra
2965 * reference to it if fb != null. setplane will take care of dropping
2966 * the reference if the plane update fails.
2968 if (req->flags & DRM_MODE_CURSOR_BO) {
2970 fb = internal_framebuffer_create(dev, &fbreq, file_priv);
2972 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2979 fb = crtc->cursor->fb;
2981 drm_framebuffer_reference(fb);
2984 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2988 crtc_x = crtc->cursor_x;
2989 crtc_y = crtc->cursor_y;
2994 crtc_h = fb->height;
2995 src_w = fb->width << 16;
2996 src_h = fb->height << 16;
3000 * setplane_internal will take care of deref'ing either the old or new
3001 * framebuffer depending on success.
3003 ret = __setplane_internal(crtc->cursor, crtc, fb,
3004 crtc_x, crtc_y, crtc_w, crtc_h,
3005 0, 0, src_w, src_h);
3007 /* Update successful; save new cursor position, if necessary */
3008 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
3009 crtc->cursor_x = req->x;
3010 crtc->cursor_y = req->y;
3016 static int drm_mode_cursor_common(struct drm_device *dev,
3017 struct drm_mode_cursor2 *req,
3018 struct drm_file *file_priv)
3020 struct drm_crtc *crtc;
3023 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3026 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
3029 crtc = drm_crtc_find(dev, req->crtc_id);
3031 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
3036 * If this crtc has a universal cursor plane, call that plane's update
3037 * handler rather than using legacy cursor handlers.
3039 drm_modeset_lock_crtc(crtc, crtc->cursor);
3041 ret = drm_mode_cursor_universal(crtc, req, file_priv);
3045 if (req->flags & DRM_MODE_CURSOR_BO) {
3046 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
3050 /* Turns off the cursor if handle is 0 */
3051 if (crtc->funcs->cursor_set2)
3052 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
3053 req->width, req->height, req->hot_x, req->hot_y);
3055 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
3056 req->width, req->height);
3059 if (req->flags & DRM_MODE_CURSOR_MOVE) {
3060 if (crtc->funcs->cursor_move) {
3061 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
3068 drm_modeset_unlock_crtc(crtc);
3076 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
3077 * @dev: drm device for the ioctl
3078 * @data: data pointer for the ioctl
3079 * @file_priv: drm file for the ioctl call
3081 * Set the cursor configuration based on user request.
3083 * Called by the user via ioctl.
3086 * Zero on success, negative errno on failure.
3088 int drm_mode_cursor_ioctl(struct drm_device *dev,
3089 void *data, struct drm_file *file_priv)
3091 struct drm_mode_cursor *req = data;
3092 struct drm_mode_cursor2 new_req;
3094 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
3095 new_req.hot_x = new_req.hot_y = 0;
3097 return drm_mode_cursor_common(dev, &new_req, file_priv);
3101 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3102 * @dev: drm device for the ioctl
3103 * @data: data pointer for the ioctl
3104 * @file_priv: drm file for the ioctl call
3106 * Set the cursor configuration based on user request. This implements the 2nd
3107 * version of the cursor ioctl, which allows userspace to additionally specify
3108 * the hotspot of the pointer.
3110 * Called by the user via ioctl.
3113 * Zero on success, negative errno on failure.
3115 int drm_mode_cursor2_ioctl(struct drm_device *dev,
3116 void *data, struct drm_file *file_priv)
3118 struct drm_mode_cursor2 *req = data;
3120 return drm_mode_cursor_common(dev, req, file_priv);
3124 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3125 * @bpp: bits per pixels
3126 * @depth: bit depth per pixel
3128 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3129 * Useful in fbdev emulation code, since that deals in those values.
3131 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
3137 fmt = DRM_FORMAT_C8;
3141 fmt = DRM_FORMAT_XRGB1555;
3143 fmt = DRM_FORMAT_RGB565;
3146 fmt = DRM_FORMAT_RGB888;
3150 fmt = DRM_FORMAT_XRGB8888;
3151 else if (depth == 30)
3152 fmt = DRM_FORMAT_XRGB2101010;
3154 fmt = DRM_FORMAT_ARGB8888;
3157 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3158 fmt = DRM_FORMAT_XRGB8888;
3164 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3167 * drm_mode_addfb - add an FB to the graphics configuration
3168 * @dev: drm device for the ioctl
3169 * @data: data pointer for the ioctl
3170 * @file_priv: drm file for the ioctl call
3172 * Add a new FB to the specified CRTC, given a user request. This is the
3173 * original addfb ioctl which only supported RGB formats.
3175 * Called by the user via ioctl.
3178 * Zero on success, negative errno on failure.
3180 int drm_mode_addfb(struct drm_device *dev,
3181 void *data, struct drm_file *file_priv)
3183 struct drm_mode_fb_cmd *or = data;
3184 struct drm_mode_fb_cmd2 r = {};
3187 /* convert to new format and call new ioctl */
3188 r.fb_id = or->fb_id;
3189 r.width = or->width;
3190 r.height = or->height;
3191 r.pitches[0] = or->pitch;
3192 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3193 r.handles[0] = or->handle;
3195 ret = drm_mode_addfb2(dev, &r, file_priv);
3199 or->fb_id = r.fb_id;
3204 static int format_check(const struct drm_mode_fb_cmd2 *r)
3206 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3210 case DRM_FORMAT_RGB332:
3211 case DRM_FORMAT_BGR233:
3212 case DRM_FORMAT_XRGB4444:
3213 case DRM_FORMAT_XBGR4444:
3214 case DRM_FORMAT_RGBX4444:
3215 case DRM_FORMAT_BGRX4444:
3216 case DRM_FORMAT_ARGB4444:
3217 case DRM_FORMAT_ABGR4444:
3218 case DRM_FORMAT_RGBA4444:
3219 case DRM_FORMAT_BGRA4444:
3220 case DRM_FORMAT_XRGB1555:
3221 case DRM_FORMAT_XBGR1555:
3222 case DRM_FORMAT_RGBX5551:
3223 case DRM_FORMAT_BGRX5551:
3224 case DRM_FORMAT_ARGB1555:
3225 case DRM_FORMAT_ABGR1555:
3226 case DRM_FORMAT_RGBA5551:
3227 case DRM_FORMAT_BGRA5551:
3228 case DRM_FORMAT_RGB565:
3229 case DRM_FORMAT_BGR565:
3230 case DRM_FORMAT_RGB888:
3231 case DRM_FORMAT_BGR888:
3232 case DRM_FORMAT_XRGB8888:
3233 case DRM_FORMAT_XBGR8888:
3234 case DRM_FORMAT_RGBX8888:
3235 case DRM_FORMAT_BGRX8888:
3236 case DRM_FORMAT_ARGB8888:
3237 case DRM_FORMAT_ABGR8888:
3238 case DRM_FORMAT_RGBA8888:
3239 case DRM_FORMAT_BGRA8888:
3240 case DRM_FORMAT_XRGB2101010:
3241 case DRM_FORMAT_XBGR2101010:
3242 case DRM_FORMAT_RGBX1010102:
3243 case DRM_FORMAT_BGRX1010102:
3244 case DRM_FORMAT_ARGB2101010:
3245 case DRM_FORMAT_ABGR2101010:
3246 case DRM_FORMAT_RGBA1010102:
3247 case DRM_FORMAT_BGRA1010102:
3248 case DRM_FORMAT_YUYV:
3249 case DRM_FORMAT_YVYU:
3250 case DRM_FORMAT_UYVY:
3251 case DRM_FORMAT_VYUY:
3252 case DRM_FORMAT_AYUV:
3253 case DRM_FORMAT_NV12:
3254 case DRM_FORMAT_NV21:
3255 case DRM_FORMAT_NV16:
3256 case DRM_FORMAT_NV61:
3257 case DRM_FORMAT_NV24:
3258 case DRM_FORMAT_NV42:
3259 case DRM_FORMAT_YUV410:
3260 case DRM_FORMAT_YVU410:
3261 case DRM_FORMAT_YUV411:
3262 case DRM_FORMAT_YVU411:
3263 case DRM_FORMAT_YUV420:
3264 case DRM_FORMAT_YVU420:
3265 case DRM_FORMAT_YUV422:
3266 case DRM_FORMAT_YVU422:
3267 case DRM_FORMAT_YUV444:
3268 case DRM_FORMAT_YVU444:
3271 DRM_DEBUG_KMS("invalid pixel format %s\n",
3272 drm_get_format_name(r->pixel_format));
3277 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
3279 int ret, hsub, vsub, num_planes, i;
3281 ret = format_check(r);
3283 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3284 drm_get_format_name(r->pixel_format));
3288 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3289 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3290 num_planes = drm_format_num_planes(r->pixel_format);
3292 if (r->width == 0 || r->width % hsub) {
3293 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
3297 if (r->height == 0 || r->height % vsub) {
3298 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
3302 for (i = 0; i < num_planes; i++) {
3303 unsigned int width = r->width / (i != 0 ? hsub : 1);
3304 unsigned int height = r->height / (i != 0 ? vsub : 1);
3305 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
3307 if (!r->handles[i]) {
3308 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
3312 if ((uint64_t) width * cpp > UINT_MAX)
3315 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3318 if (r->pitches[i] < width * cpp) {
3319 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
3323 if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
3324 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3329 /* modifier specific checks: */
3330 switch (r->modifier[i]) {
3331 case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE:
3332 /* NOTE: the pitch restriction may be lifted later if it turns
3333 * out that no hw has this restriction:
3335 if (r->pixel_format != DRM_FORMAT_NV12 ||
3336 width % 128 || height % 32 ||
3337 r->pitches[i] % 128) {
3338 DRM_DEBUG_KMS("bad modifier data for plane %d\n", i);
3348 for (i = num_planes; i < 4; i++) {
3349 if (r->modifier[i]) {
3350 DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i);
3354 /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
3355 if (!(r->flags & DRM_MODE_FB_MODIFIERS))
3358 if (r->handles[i]) {
3359 DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i);
3363 if (r->pitches[i]) {
3364 DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i);
3368 if (r->offsets[i]) {
3369 DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i);
3377 static struct drm_framebuffer *
3378 internal_framebuffer_create(struct drm_device *dev,
3379 const struct drm_mode_fb_cmd2 *r,
3380 struct drm_file *file_priv)
3382 struct drm_mode_config *config = &dev->mode_config;
3383 struct drm_framebuffer *fb;
3386 if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
3387 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
3388 return ERR_PTR(-EINVAL);
3391 if ((config->min_width > r->width) || (r->width > config->max_width)) {
3392 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3393 r->width, config->min_width, config->max_width);
3394 return ERR_PTR(-EINVAL);
3396 if ((config->min_height > r->height) || (r->height > config->max_height)) {
3397 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3398 r->height, config->min_height, config->max_height);
3399 return ERR_PTR(-EINVAL);
3402 if (r->flags & DRM_MODE_FB_MODIFIERS &&
3403 !dev->mode_config.allow_fb_modifiers) {
3404 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3405 return ERR_PTR(-EINVAL);
3408 ret = framebuffer_check(r);
3410 return ERR_PTR(ret);
3412 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
3414 DRM_DEBUG_KMS("could not create framebuffer\n");
3422 * drm_mode_addfb2 - add an FB to the graphics configuration
3423 * @dev: drm device for the ioctl
3424 * @data: data pointer for the ioctl
3425 * @file_priv: drm file for the ioctl call
3427 * Add a new FB to the specified CRTC, given a user request with format. This is
3428 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3429 * and uses fourcc codes as pixel format specifiers.
3431 * Called by the user via ioctl.
3434 * Zero on success, negative errno on failure.
3436 int drm_mode_addfb2(struct drm_device *dev,
3437 void *data, struct drm_file *file_priv)
3439 struct drm_mode_fb_cmd2 *r = data;
3440 struct drm_framebuffer *fb;
3442 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3445 fb = internal_framebuffer_create(dev, r, file_priv);
3449 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3450 r->fb_id = fb->base.id;
3452 /* Transfer ownership to the filp for reaping on close */
3453 mutex_lock(&file_priv->fbs_lock);
3454 list_add(&fb->filp_head, &file_priv->fbs);
3455 mutex_unlock(&file_priv->fbs_lock);
3461 * drm_mode_rmfb - remove an FB from the configuration
3462 * @dev: drm device for the ioctl
3463 * @data: data pointer for the ioctl
3464 * @file_priv: drm file for the ioctl call
3466 * Remove the FB specified by the user.
3468 * Called by the user via ioctl.
3471 * Zero on success, negative errno on failure.
3473 int drm_mode_rmfb(struct drm_device *dev,
3474 void *data, struct drm_file *file_priv)
3476 struct drm_framebuffer *fb = NULL;
3477 struct drm_framebuffer *fbl = NULL;
3478 uint32_t *id = data;
3481 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3484 fb = drm_framebuffer_lookup(dev, *id);
3488 mutex_lock(&file_priv->fbs_lock);
3489 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3493 mutex_unlock(&file_priv->fbs_lock);
3497 list_del_init(&fb->filp_head);
3498 mutex_unlock(&file_priv->fbs_lock);
3500 /* we now own the reference that was stored in the fbs list */
3501 drm_framebuffer_unreference(fb);
3503 /* drop the reference we picked up in framebuffer lookup */
3504 drm_framebuffer_unreference(fb);
3509 drm_framebuffer_unreference(fb);
3514 * drm_mode_getfb - get FB info
3515 * @dev: drm device for the ioctl
3516 * @data: data pointer for the ioctl
3517 * @file_priv: drm file for the ioctl call
3519 * Lookup the FB given its ID and return info about it.
3521 * Called by the user via ioctl.
3524 * Zero on success, negative errno on failure.
3526 int drm_mode_getfb(struct drm_device *dev,
3527 void *data, struct drm_file *file_priv)
3529 struct drm_mode_fb_cmd *r = data;
3530 struct drm_framebuffer *fb;
3533 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3536 fb = drm_framebuffer_lookup(dev, r->fb_id);
3540 r->height = fb->height;
3541 r->width = fb->width;
3542 r->depth = fb->depth;
3543 r->bpp = fb->bits_per_pixel;
3544 r->pitch = fb->pitches[0];
3545 if (fb->funcs->create_handle) {
3546 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
3547 drm_is_control_client(file_priv)) {
3548 ret = fb->funcs->create_handle(fb, file_priv,
3551 /* GET_FB() is an unprivileged ioctl so we must not
3552 * return a buffer-handle to non-master processes! For
3553 * backwards-compatibility reasons, we cannot make
3554 * GET_FB() privileged, so just return an invalid handle
3555 * for non-masters. */
3563 drm_framebuffer_unreference(fb);
3569 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3570 * @dev: drm device for the ioctl
3571 * @data: data pointer for the ioctl
3572 * @file_priv: drm file for the ioctl call
3574 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3575 * rectangle list. Generic userspace which does frontbuffer rendering must call
3576 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3577 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3579 * Modesetting drivers which always update the frontbuffer do not need to
3580 * implement the corresponding ->dirty framebuffer callback.
3582 * Called by the user via ioctl.
3585 * Zero on success, negative errno on failure.
3587 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3588 void *data, struct drm_file *file_priv)
3590 struct drm_clip_rect __user *clips_ptr;
3591 struct drm_clip_rect *clips = NULL;
3592 struct drm_mode_fb_dirty_cmd *r = data;
3593 struct drm_framebuffer *fb;
3598 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3601 fb = drm_framebuffer_lookup(dev, r->fb_id);
3605 num_clips = r->num_clips;
3606 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3608 if (!num_clips != !clips_ptr) {
3613 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3615 /* If userspace annotates copy, clips must come in pairs */
3616 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3621 if (num_clips && clips_ptr) {
3622 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3626 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
3632 ret = copy_from_user(clips, clips_ptr,
3633 num_clips * sizeof(*clips));
3640 if (fb->funcs->dirty) {
3641 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3650 drm_framebuffer_unreference(fb);
3657 * drm_fb_release - remove and free the FBs on this file
3658 * @priv: drm file for the ioctl
3660 * Destroy all the FBs associated with @filp.
3662 * Called by the user via ioctl.
3665 * Zero on success, negative errno on failure.
3667 void drm_fb_release(struct drm_file *priv)
3669 struct drm_framebuffer *fb, *tfb;
3672 * When the file gets released that means no one else can access the fb
3673 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3674 * avoid upsetting lockdep since the universal cursor code adds a
3675 * framebuffer while holding mutex locks.
3677 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3678 * locks is impossible here since no one else but this function can get
3681 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3682 list_del_init(&fb->filp_head);
3684 /* This drops the fpriv->fbs reference. */
3685 drm_framebuffer_unreference(fb);
3690 * drm_property_create - create a new property type
3692 * @flags: flags specifying the property type
3693 * @name: name of the property
3694 * @num_values: number of pre-defined values
3696 * This creates a new generic drm property which can then be attached to a drm
3697 * object with drm_object_attach_property. The returned property object must be
3698 * freed with drm_property_destroy.
3700 * Note that the DRM core keeps a per-device list of properties and that, if
3701 * drm_mode_config_cleanup() is called, it will destroy all properties created
3705 * A pointer to the newly created property on success, NULL on failure.
3707 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3708 const char *name, int num_values)
3710 struct drm_property *property = NULL;
3713 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3717 property->dev = dev;
3720 property->values = kcalloc(num_values, sizeof(uint64_t),
3722 if (!property->values)
3726 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3730 property->flags = flags;
3731 property->num_values = num_values;
3732 INIT_LIST_HEAD(&property->enum_list);
3735 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3736 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3739 list_add_tail(&property->head, &dev->mode_config.property_list);
3741 WARN_ON(!drm_property_type_valid(property));
3745 kfree(property->values);
3749 EXPORT_SYMBOL(drm_property_create);
3752 * drm_property_create_enum - create a new enumeration property type
3754 * @flags: flags specifying the property type
3755 * @name: name of the property
3756 * @props: enumeration lists with property values
3757 * @num_values: number of pre-defined values
3759 * This creates a new generic drm property which can then be attached to a drm
3760 * object with drm_object_attach_property. The returned property object must be
3761 * freed with drm_property_destroy.
3763 * Userspace is only allowed to set one of the predefined values for enumeration
3767 * A pointer to the newly created property on success, NULL on failure.
3769 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3771 const struct drm_prop_enum_list *props,
3774 struct drm_property *property;
3777 flags |= DRM_MODE_PROP_ENUM;
3779 property = drm_property_create(dev, flags, name, num_values);
3783 for (i = 0; i < num_values; i++) {
3784 ret = drm_property_add_enum(property, i,
3788 drm_property_destroy(dev, property);
3795 EXPORT_SYMBOL(drm_property_create_enum);
3798 * drm_property_create_bitmask - create a new bitmask property type
3800 * @flags: flags specifying the property type
3801 * @name: name of the property
3802 * @props: enumeration lists with property bitflags
3803 * @num_props: size of the @props array
3804 * @supported_bits: bitmask of all supported enumeration values
3806 * This creates a new bitmask drm property which can then be attached to a drm
3807 * object with drm_object_attach_property. The returned property object must be
3808 * freed with drm_property_destroy.
3810 * Compared to plain enumeration properties userspace is allowed to set any
3811 * or'ed together combination of the predefined property bitflag values
3814 * A pointer to the newly created property on success, NULL on failure.
3816 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3817 int flags, const char *name,
3818 const struct drm_prop_enum_list *props,
3820 uint64_t supported_bits)
3822 struct drm_property *property;
3823 int i, ret, index = 0;
3824 int num_values = hweight64(supported_bits);
3826 flags |= DRM_MODE_PROP_BITMASK;
3828 property = drm_property_create(dev, flags, name, num_values);
3831 for (i = 0; i < num_props; i++) {
3832 if (!(supported_bits & (1ULL << props[i].type)))
3835 if (WARN_ON(index >= num_values)) {
3836 drm_property_destroy(dev, property);
3840 ret = drm_property_add_enum(property, index++,
3844 drm_property_destroy(dev, property);
3851 EXPORT_SYMBOL(drm_property_create_bitmask);
3853 static struct drm_property *property_create_range(struct drm_device *dev,
3854 int flags, const char *name,
3855 uint64_t min, uint64_t max)
3857 struct drm_property *property;
3859 property = drm_property_create(dev, flags, name, 2);
3863 property->values[0] = min;
3864 property->values[1] = max;
3870 * drm_property_create_range - create a new unsigned ranged property type
3872 * @flags: flags specifying the property type
3873 * @name: name of the property
3874 * @min: minimum value of the property
3875 * @max: maximum value of the property
3877 * This creates a new generic drm property which can then be attached to a drm
3878 * object with drm_object_attach_property. The returned property object must be
3879 * freed with drm_property_destroy.
3881 * Userspace is allowed to set any unsigned integer value in the (min, max)
3885 * A pointer to the newly created property on success, NULL on failure.
3887 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3889 uint64_t min, uint64_t max)
3891 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3894 EXPORT_SYMBOL(drm_property_create_range);
3897 * drm_property_create_signed_range - create a new signed ranged property type
3899 * @flags: flags specifying the property type
3900 * @name: name of the property
3901 * @min: minimum value of the property
3902 * @max: maximum value of the property
3904 * This creates a new generic drm property which can then be attached to a drm
3905 * object with drm_object_attach_property. The returned property object must be
3906 * freed with drm_property_destroy.
3908 * Userspace is allowed to set any signed integer value in the (min, max)
3912 * A pointer to the newly created property on success, NULL on failure.
3914 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3915 int flags, const char *name,
3916 int64_t min, int64_t max)
3918 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3919 name, I642U64(min), I642U64(max));
3921 EXPORT_SYMBOL(drm_property_create_signed_range);
3924 * drm_property_create_object - create a new object property type
3926 * @flags: flags specifying the property type
3927 * @name: name of the property
3928 * @type: object type from DRM_MODE_OBJECT_* defines
3930 * This creates a new generic drm property which can then be attached to a drm
3931 * object with drm_object_attach_property. The returned property object must be
3932 * freed with drm_property_destroy.
3934 * Userspace is only allowed to set this to any property value of the given
3935 * @type. Only useful for atomic properties, which is enforced.
3938 * A pointer to the newly created property on success, NULL on failure.
3940 struct drm_property *drm_property_create_object(struct drm_device *dev,
3941 int flags, const char *name, uint32_t type)
3943 struct drm_property *property;
3945 flags |= DRM_MODE_PROP_OBJECT;
3947 if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
3950 property = drm_property_create(dev, flags, name, 1);
3954 property->values[0] = type;
3958 EXPORT_SYMBOL(drm_property_create_object);
3961 * drm_property_create_bool - create a new boolean property type
3963 * @flags: flags specifying the property type
3964 * @name: name of the property
3966 * This creates a new generic drm property which can then be attached to a drm
3967 * object with drm_object_attach_property. The returned property object must be
3968 * freed with drm_property_destroy.
3970 * This is implemented as a ranged property with only {0, 1} as valid values.
3973 * A pointer to the newly created property on success, NULL on failure.
3975 struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
3978 return drm_property_create_range(dev, flags, name, 0, 1);
3980 EXPORT_SYMBOL(drm_property_create_bool);
3983 * drm_property_add_enum - add a possible value to an enumeration property
3984 * @property: enumeration property to change
3985 * @index: index of the new enumeration
3986 * @value: value of the new enumeration
3987 * @name: symbolic name of the new enumeration
3989 * This functions adds enumerations to a property.
3991 * It's use is deprecated, drivers should use one of the more specific helpers
3992 * to directly create the property with all enumerations already attached.
3995 * Zero on success, error code on failure.
3997 int drm_property_add_enum(struct drm_property *property, int index,
3998 uint64_t value, const char *name)
4000 struct drm_property_enum *prop_enum;
4002 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4003 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
4007 * Bitmask enum properties have the additional constraint of values
4010 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
4014 if (!list_empty(&property->enum_list)) {
4015 list_for_each_entry(prop_enum, &property->enum_list, head) {
4016 if (prop_enum->value == value) {
4017 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
4018 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
4024 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
4028 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
4029 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
4030 prop_enum->value = value;
4032 property->values[index] = value;
4033 list_add_tail(&prop_enum->head, &property->enum_list);
4036 EXPORT_SYMBOL(drm_property_add_enum);
4039 * drm_property_destroy - destroy a drm property
4041 * @property: property to destry
4043 * This function frees a property including any attached resources like
4044 * enumeration values.
4046 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
4048 struct drm_property_enum *prop_enum, *pt;
4050 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
4051 list_del(&prop_enum->head);
4055 if (property->num_values)
4056 kfree(property->values);
4057 drm_mode_object_unregister(dev, &property->base);
4058 list_del(&property->head);
4061 EXPORT_SYMBOL(drm_property_destroy);
4064 * drm_object_attach_property - attach a property to a modeset object
4065 * @obj: drm modeset object
4066 * @property: property to attach
4067 * @init_val: initial value of the property
4069 * This attaches the given property to the modeset object with the given initial
4070 * value. Currently this function cannot fail since the properties are stored in
4071 * a statically sized array.
4073 void drm_object_attach_property(struct drm_mode_object *obj,
4074 struct drm_property *property,
4077 int count = obj->properties->count;
4079 if (count == DRM_OBJECT_MAX_PROPERTY) {
4080 WARN(1, "Failed to attach object property (type: 0x%x). Please "
4081 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
4082 "you see this message on the same object type.\n",
4087 obj->properties->properties[count] = property;
4088 obj->properties->values[count] = init_val;
4089 obj->properties->count++;
4090 if (property->flags & DRM_MODE_PROP_ATOMIC)
4091 obj->properties->atomic_count++;
4093 EXPORT_SYMBOL(drm_object_attach_property);
4096 * drm_object_property_set_value - set the value of a property
4097 * @obj: drm mode object to set property value for
4098 * @property: property to set
4099 * @val: value the property should be set to
4101 * This functions sets a given property on a given object. This function only
4102 * changes the software state of the property, it does not call into the
4103 * driver's ->set_property callback.
4106 * Zero on success, error code on failure.
4108 int drm_object_property_set_value(struct drm_mode_object *obj,
4109 struct drm_property *property, uint64_t val)
4113 for (i = 0; i < obj->properties->count; i++) {
4114 if (obj->properties->properties[i] == property) {
4115 obj->properties->values[i] = val;
4122 EXPORT_SYMBOL(drm_object_property_set_value);
4125 * drm_object_property_get_value - retrieve the value of a property
4126 * @obj: drm mode object to get property value from
4127 * @property: property to retrieve
4128 * @val: storage for the property value
4130 * This function retrieves the softare state of the given property for the given
4131 * property. Since there is no driver callback to retrieve the current property
4132 * value this might be out of sync with the hardware, depending upon the driver
4136 * Zero on success, error code on failure.
4138 int drm_object_property_get_value(struct drm_mode_object *obj,
4139 struct drm_property *property, uint64_t *val)
4143 /* read-only properties bypass atomic mechanism and still store
4144 * their value in obj->properties->values[].. mostly to avoid
4145 * having to deal w/ EDID and similar props in atomic paths:
4147 if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
4148 !(property->flags & DRM_MODE_PROP_IMMUTABLE))
4149 return drm_atomic_get_property(obj, property, val);
4151 for (i = 0; i < obj->properties->count; i++) {
4152 if (obj->properties->properties[i] == property) {
4153 *val = obj->properties->values[i];
4160 EXPORT_SYMBOL(drm_object_property_get_value);
4163 * drm_mode_getproperty_ioctl - get the property metadata
4166 * @file_priv: DRM file info
4168 * This function retrieves the metadata for a given property, like the different
4169 * possible values for an enum property or the limits for a range property.
4171 * Blob properties are special
4173 * Called by the user via ioctl.
4176 * Zero on success, negative errno on failure.
4178 int drm_mode_getproperty_ioctl(struct drm_device *dev,
4179 void *data, struct drm_file *file_priv)
4181 struct drm_mode_get_property *out_resp = data;
4182 struct drm_property *property;
4184 int value_count = 0;
4187 struct drm_property_enum *prop_enum;
4188 struct drm_mode_property_enum __user *enum_ptr;
4189 uint64_t __user *values_ptr;
4191 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4194 drm_modeset_lock_all(dev);
4195 property = drm_property_find(dev, out_resp->prop_id);
4201 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4202 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4203 list_for_each_entry(prop_enum, &property->enum_list, head)
4207 value_count = property->num_values;
4209 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
4210 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
4211 out_resp->flags = property->flags;
4213 if ((out_resp->count_values >= value_count) && value_count) {
4214 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
4215 for (i = 0; i < value_count; i++) {
4216 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
4222 out_resp->count_values = value_count;
4224 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4225 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4226 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
4228 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
4229 list_for_each_entry(prop_enum, &property->enum_list, head) {
4231 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
4236 if (copy_to_user(&enum_ptr[copied].name,
4237 &prop_enum->name, DRM_PROP_NAME_LEN)) {
4244 out_resp->count_enum_blobs = enum_count;
4248 * NOTE: The idea seems to have been to use this to read all the blob
4249 * property values. But nothing ever added them to the corresponding
4250 * list, userspace always used the special-purpose get_blob ioctl to
4251 * read the value for a blob property. It also doesn't make a lot of
4252 * sense to return values here when everything else is just metadata for
4253 * the property itself.
4255 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4256 out_resp->count_enum_blobs = 0;
4258 drm_modeset_unlock_all(dev);
4263 * drm_property_create_blob - Create new blob property
4265 * Creates a new blob property for a specified DRM device, optionally
4268 * @dev: DRM device to create property for
4269 * @length: Length to allocate for blob data
4270 * @data: If specified, copies data into blob
4273 * New blob property with a single reference on success, or an ERR_PTR
4276 struct drm_property_blob *
4277 drm_property_create_blob(struct drm_device *dev, size_t length,
4280 struct drm_property_blob *blob;
4283 if (!length || length > ULONG_MAX - sizeof(struct drm_property_blob))
4284 return ERR_PTR(-EINVAL);
4286 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
4288 return ERR_PTR(-ENOMEM);
4290 /* This must be explicitly initialised, so we can safely call list_del
4291 * on it in the removal handler, even if it isn't in a file list. */
4292 INIT_LIST_HEAD(&blob->head_file);
4293 blob->length = length;
4297 memcpy(blob->data, data, length);
4299 mutex_lock(&dev->mode_config.blob_lock);
4301 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
4304 mutex_unlock(&dev->mode_config.blob_lock);
4305 return ERR_PTR(-EINVAL);
4308 kref_init(&blob->refcount);
4310 list_add_tail(&blob->head_global,
4311 &dev->mode_config.property_blob_list);
4313 mutex_unlock(&dev->mode_config.blob_lock);
4317 EXPORT_SYMBOL(drm_property_create_blob);
4320 * drm_property_free_blob - Blob property destructor
4322 * Internal free function for blob properties; must not be used directly.
4326 static void drm_property_free_blob(struct kref *kref)
4328 struct drm_property_blob *blob =
4329 container_of(kref, struct drm_property_blob, refcount);
4331 WARN_ON(!mutex_is_locked(&blob->dev->mode_config.blob_lock));
4333 list_del(&blob->head_global);
4334 list_del(&blob->head_file);
4335 drm_mode_object_unregister(blob->dev, &blob->base);
4341 * drm_property_unreference_blob - Unreference a blob property
4343 * Drop a reference on a blob property. May free the object.
4345 * @blob: Pointer to blob property
4347 void drm_property_unreference_blob(struct drm_property_blob *blob)
4349 struct drm_device *dev;
4356 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4358 if (kref_put_mutex(&blob->refcount, drm_property_free_blob,
4359 &dev->mode_config.blob_lock))
4360 mutex_unlock(&dev->mode_config.blob_lock);
4362 might_lock(&dev->mode_config.blob_lock);
4364 EXPORT_SYMBOL(drm_property_unreference_blob);
4367 * drm_property_unreference_blob_locked - Unreference a blob property with blob_lock held
4369 * Drop a reference on a blob property. May free the object. This must be
4370 * called with blob_lock held.
4372 * @blob: Pointer to blob property
4374 static void drm_property_unreference_blob_locked(struct drm_property_blob *blob)
4379 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4381 kref_put(&blob->refcount, drm_property_free_blob);
4385 * drm_property_destroy_user_blobs - destroy all blobs created by this client
4387 * @file_priv: destroy all blobs owned by this file handle
4389 void drm_property_destroy_user_blobs(struct drm_device *dev,
4390 struct drm_file *file_priv)
4392 struct drm_property_blob *blob, *bt;
4394 mutex_lock(&dev->mode_config.blob_lock);
4396 list_for_each_entry_safe(blob, bt, &file_priv->blobs, head_file) {
4397 list_del_init(&blob->head_file);
4398 drm_property_unreference_blob_locked(blob);
4401 mutex_unlock(&dev->mode_config.blob_lock);
4405 * drm_property_reference_blob - Take a reference on an existing property
4407 * Take a new reference on an existing blob property.
4409 * @blob: Pointer to blob property
4411 struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob)
4413 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4414 kref_get(&blob->refcount);
4417 EXPORT_SYMBOL(drm_property_reference_blob);
4420 * Like drm_property_lookup_blob, but does not return an additional reference.
4421 * Must be called with blob_lock held.
4423 static struct drm_property_blob *__drm_property_lookup_blob(struct drm_device *dev,
4426 struct drm_mode_object *obj = NULL;
4427 struct drm_property_blob *blob;
4429 WARN_ON(!mutex_is_locked(&dev->mode_config.blob_lock));
4431 mutex_lock(&dev->mode_config.idr_mutex);
4432 obj = idr_find(&dev->mode_config.crtc_idr, id);
4433 if (!obj || (obj->type != DRM_MODE_OBJECT_BLOB) || (obj->id != id))
4436 blob = obj_to_blob(obj);
4437 mutex_unlock(&dev->mode_config.idr_mutex);
4443 * drm_property_lookup_blob - look up a blob property and take a reference
4445 * @id: id of the blob property
4447 * If successful, this takes an additional reference to the blob property.
4448 * callers need to make sure to eventually unreference the returned property
4449 * again, using @drm_property_unreference_blob.
4451 struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
4454 struct drm_property_blob *blob;
4456 mutex_lock(&dev->mode_config.blob_lock);
4457 blob = __drm_property_lookup_blob(dev, id);
4459 if (!kref_get_unless_zero(&blob->refcount))
4462 mutex_unlock(&dev->mode_config.blob_lock);
4466 EXPORT_SYMBOL(drm_property_lookup_blob);
4469 * drm_property_replace_global_blob - atomically replace existing blob property
4471 * @replace: location of blob property pointer to be replaced
4472 * @length: length of data for new blob, or 0 for no data
4473 * @data: content for new blob, or NULL for no data
4474 * @obj_holds_id: optional object for property holding blob ID
4475 * @prop_holds_id: optional property holding blob ID
4476 * @return 0 on success or error on failure
4478 * This function will atomically replace a global property in the blob list,
4479 * optionally updating a property which holds the ID of that property. It is
4480 * guaranteed to be atomic: no caller will be allowed to see intermediate
4481 * results, and either the entire operation will succeed and clean up the
4482 * previous property, or it will fail and the state will be unchanged.
4484 * If length is 0 or data is NULL, no new blob will be created, and the holding
4485 * property, if specified, will be set to 0.
4487 * Access to the replace pointer is assumed to be protected by the caller, e.g.
4488 * by holding the relevant modesetting object lock for its parent.
4490 * For example, a drm_connector has a 'PATH' property, which contains the ID
4491 * of a blob property with the value of the MST path information. Calling this
4492 * function with replace pointing to the connector's path_blob_ptr, length and
4493 * data set for the new path information, obj_holds_id set to the connector's
4494 * base object, and prop_holds_id set to the path property name, will perform
4495 * a completely atomic update. The access to path_blob_ptr is protected by the
4496 * caller holding a lock on the connector.
4498 static int drm_property_replace_global_blob(struct drm_device *dev,
4499 struct drm_property_blob **replace,
4502 struct drm_mode_object *obj_holds_id,
4503 struct drm_property *prop_holds_id)
4505 struct drm_property_blob *new_blob = NULL;
4506 struct drm_property_blob *old_blob = NULL;
4509 WARN_ON(replace == NULL);
4511 old_blob = *replace;
4513 if (length && data) {
4514 new_blob = drm_property_create_blob(dev, length, data);
4515 if (IS_ERR(new_blob))
4516 return PTR_ERR(new_blob);
4519 /* This does not need to be synchronised with blob_lock, as the
4520 * get_properties ioctl locks all modesetting objects, and
4521 * obj_holds_id must be locked before calling here, so we cannot
4522 * have its value out of sync with the list membership modified
4523 * below under blob_lock. */
4525 ret = drm_object_property_set_value(obj_holds_id,
4528 new_blob->base.id : 0);
4533 drm_property_unreference_blob(old_blob);
4534 *replace = new_blob;
4539 drm_property_unreference_blob(new_blob);
4544 * drm_mode_getblob_ioctl - get the contents of a blob property value
4547 * @file_priv: DRM file info
4549 * This function retrieves the contents of a blob property. The value stored in
4550 * an object's blob property is just a normal modeset object id.
4552 * Called by the user via ioctl.
4555 * Zero on success, negative errno on failure.
4557 int drm_mode_getblob_ioctl(struct drm_device *dev,
4558 void *data, struct drm_file *file_priv)
4560 struct drm_mode_get_blob *out_resp = data;
4561 struct drm_property_blob *blob;
4563 void __user *blob_ptr;
4565 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4568 drm_modeset_lock_all(dev);
4569 mutex_lock(&dev->mode_config.blob_lock);
4570 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
4576 if (out_resp->length == blob->length) {
4577 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4578 if (copy_to_user(blob_ptr, blob->data, blob->length)) {
4583 out_resp->length = blob->length;
4586 mutex_unlock(&dev->mode_config.blob_lock);
4587 drm_modeset_unlock_all(dev);
4592 * drm_mode_createblob_ioctl - create a new blob property
4595 * @file_priv: DRM file info
4597 * This function creates a new blob property with user-defined values. In order
4598 * to give us sensible validation and checking when creating, rather than at
4599 * every potential use, we also require a type to be provided upfront.
4601 * Called by the user via ioctl.
4604 * Zero on success, negative errno on failure.
4606 int drm_mode_createblob_ioctl(struct drm_device *dev,
4607 void *data, struct drm_file *file_priv)
4609 struct drm_mode_create_blob *out_resp = data;
4610 struct drm_property_blob *blob;
4611 void __user *blob_ptr;
4614 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4617 blob = drm_property_create_blob(dev, out_resp->length, NULL);
4619 return PTR_ERR(blob);
4621 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4622 if (copy_from_user(blob->data, blob_ptr, out_resp->length)) {
4627 /* Dropping the lock between create_blob and our access here is safe
4628 * as only the same file_priv can remove the blob; at this point, it is
4629 * not associated with any file_priv. */
4630 mutex_lock(&dev->mode_config.blob_lock);
4631 out_resp->blob_id = blob->base.id;
4632 list_add_tail(&blob->head_file, &file_priv->blobs);
4633 mutex_unlock(&dev->mode_config.blob_lock);
4638 drm_property_unreference_blob(blob);
4643 * drm_mode_destroyblob_ioctl - destroy a user blob property
4646 * @file_priv: DRM file info
4648 * Destroy an existing user-defined blob property.
4650 * Called by the user via ioctl.
4653 * Zero on success, negative errno on failure.
4655 int drm_mode_destroyblob_ioctl(struct drm_device *dev,
4656 void *data, struct drm_file *file_priv)
4658 struct drm_mode_destroy_blob *out_resp = data;
4659 struct drm_property_blob *blob = NULL, *bt;
4663 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4666 mutex_lock(&dev->mode_config.blob_lock);
4667 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
4673 /* Ensure the property was actually created by this user. */
4674 list_for_each_entry(bt, &file_priv->blobs, head_file) {
4686 /* We must drop head_file here, because we may not be the last
4687 * reference on the blob. */
4688 list_del_init(&blob->head_file);
4689 drm_property_unreference_blob_locked(blob);
4690 mutex_unlock(&dev->mode_config.blob_lock);
4695 mutex_unlock(&dev->mode_config.blob_lock);
4700 * drm_mode_connector_set_path_property - set tile property on connector
4701 * @connector: connector to set property on.
4702 * @path: path to use for property; must not be NULL.
4704 * This creates a property to expose to userspace to specify a
4705 * connector path. This is mainly used for DisplayPort MST where
4706 * connectors have a topology and we want to allow userspace to give
4707 * them more meaningful names.
4710 * Zero on success, negative errno on failure.
4712 int drm_mode_connector_set_path_property(struct drm_connector *connector,
4715 struct drm_device *dev = connector->dev;
4718 ret = drm_property_replace_global_blob(dev,
4719 &connector->path_blob_ptr,
4723 dev->mode_config.path_property);
4726 EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4729 * drm_mode_connector_set_tile_property - set tile property on connector
4730 * @connector: connector to set property on.
4732 * This looks up the tile information for a connector, and creates a
4733 * property for userspace to parse if it exists. The property is of
4734 * the form of 8 integers using ':' as a separator.
4737 * Zero on success, errno on failure.
4739 int drm_mode_connector_set_tile_property(struct drm_connector *connector)
4741 struct drm_device *dev = connector->dev;
4745 if (!connector->has_tile) {
4746 ret = drm_property_replace_global_blob(dev,
4747 &connector->tile_blob_ptr,
4751 dev->mode_config.tile_property);
4755 snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4756 connector->tile_group->id, connector->tile_is_single_monitor,
4757 connector->num_h_tile, connector->num_v_tile,
4758 connector->tile_h_loc, connector->tile_v_loc,
4759 connector->tile_h_size, connector->tile_v_size);
4761 ret = drm_property_replace_global_blob(dev,
4762 &connector->tile_blob_ptr,
4766 dev->mode_config.tile_property);
4769 EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
4772 * drm_mode_connector_update_edid_property - update the edid property of a connector
4773 * @connector: drm connector
4774 * @edid: new value of the edid property
4776 * This function creates a new blob modeset object and assigns its id to the
4777 * connector's edid property.
4780 * Zero on success, negative errno on failure.
4782 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4783 const struct edid *edid)
4785 struct drm_device *dev = connector->dev;
4789 /* ignore requests to set edid when overridden */
4790 if (connector->override_edid)
4794 size = EDID_LENGTH * (1 + edid->extensions);
4796 ret = drm_property_replace_global_blob(dev,
4797 &connector->edid_blob_ptr,
4801 dev->mode_config.edid_property);
4804 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4806 /* Some properties could refer to dynamic refcnt'd objects, or things that
4807 * need special locking to handle lifetime issues (ie. to ensure the prop
4808 * value doesn't become invalid part way through the property update due to
4809 * race). The value returned by reference via 'obj' should be passed back
4810 * to drm_property_change_valid_put() after the property is set (and the
4811 * object to which the property is attached has a chance to take it's own
4814 bool drm_property_change_valid_get(struct drm_property *property,
4815 uint64_t value, struct drm_mode_object **ref)
4819 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4824 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
4825 if (value < property->values[0] || value > property->values[1])
4828 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4829 int64_t svalue = U642I64(value);
4831 if (svalue < U642I64(property->values[0]) ||
4832 svalue > U642I64(property->values[1]))
4835 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4836 uint64_t valid_mask = 0;
4838 for (i = 0; i < property->num_values; i++)
4839 valid_mask |= (1ULL << property->values[i]);
4840 return !(value & ~valid_mask);
4841 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
4842 struct drm_property_blob *blob;
4847 blob = drm_property_lookup_blob(property->dev, value);
4854 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4855 /* a zero value for an object property translates to null: */
4859 return _object_find(property->dev, value, property->values[0]) != NULL;
4862 for (i = 0; i < property->num_values; i++)
4863 if (property->values[i] == value)
4868 void drm_property_change_valid_put(struct drm_property *property,
4869 struct drm_mode_object *ref)
4874 if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4875 drm_mode_object_unreference(ref);
4876 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4877 drm_property_unreference_blob(obj_to_blob(ref));
4881 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4884 * @file_priv: DRM file info
4886 * This function sets the current value for a connectors's property. It also
4887 * calls into a driver's ->set_property callback to update the hardware state
4889 * Called by the user via ioctl.
4892 * Zero on success, negative errno on failure.
4894 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4895 void *data, struct drm_file *file_priv)
4897 struct drm_mode_connector_set_property *conn_set_prop = data;
4898 struct drm_mode_obj_set_property obj_set_prop = {
4899 .value = conn_set_prop->value,
4900 .prop_id = conn_set_prop->prop_id,
4901 .obj_id = conn_set_prop->connector_id,
4902 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4905 /* It does all the locking and checking we need */
4906 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
4909 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4910 struct drm_property *property,
4914 struct drm_connector *connector = obj_to_connector(obj);
4916 /* Do DPMS ourselves */
4917 if (property == connector->dev->mode_config.dpms_property) {
4918 ret = (*connector->funcs->dpms)(connector, (int)value);
4919 } else if (connector->funcs->set_property)
4920 ret = connector->funcs->set_property(connector, property, value);
4922 /* store the property value if successful */
4924 drm_object_property_set_value(&connector->base, property, value);
4928 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4929 struct drm_property *property,
4933 struct drm_crtc *crtc = obj_to_crtc(obj);
4935 if (crtc->funcs->set_property)
4936 ret = crtc->funcs->set_property(crtc, property, value);
4938 drm_object_property_set_value(obj, property, value);
4944 * drm_mode_plane_set_obj_prop - set the value of a property
4945 * @plane: drm plane object to set property value for
4946 * @property: property to set
4947 * @value: value the property should be set to
4949 * This functions sets a given property on a given plane object. This function
4950 * calls the driver's ->set_property callback and changes the software state of
4951 * the property if the callback succeeds.
4954 * Zero on success, error code on failure.
4956 int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4957 struct drm_property *property,
4961 struct drm_mode_object *obj = &plane->base;
4963 if (plane->funcs->set_property)
4964 ret = plane->funcs->set_property(plane, property, value);
4966 drm_object_property_set_value(obj, property, value);
4970 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4973 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4976 * @file_priv: DRM file info
4978 * This function retrieves the current value for an object's property. Compared
4979 * to the connector specific ioctl this one is extended to also work on crtc and
4982 * Called by the user via ioctl.
4985 * Zero on success, negative errno on failure.
4987 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4988 struct drm_file *file_priv)
4990 struct drm_mode_obj_get_properties *arg = data;
4991 struct drm_mode_object *obj;
4994 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4997 drm_modeset_lock_all(dev);
4999 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
5004 if (!obj->properties) {
5009 ret = get_properties(obj, file_priv->atomic,
5010 (uint32_t __user *)(unsigned long)(arg->props_ptr),
5011 (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
5015 drm_mode_object_unreference(obj);
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_mode_object_unreference(arg_obj);
5097 drm_modeset_unlock_all(dev);
5102 * drm_mode_connector_attach_encoder - attach a connector to an encoder
5103 * @connector: connector to attach
5104 * @encoder: encoder to attach @connector to
5106 * This function links up a connector to an encoder. Note that the routing
5107 * restrictions between encoders and crtcs are exposed to userspace through the
5108 * possible_clones and possible_crtcs bitmasks.
5111 * Zero on success, negative errno on failure.
5113 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
5114 struct drm_encoder *encoder)
5119 * In the past, drivers have attempted to model the static association
5120 * of connector to encoder in simple connector/encoder devices using a
5121 * direct assignment of connector->encoder = encoder. This connection
5122 * is a logical one and the responsibility of the core, so drivers are
5123 * expected not to mess with this.
5125 * Note that the error return should've been enough here, but a large
5126 * majority of drivers ignores the return value, so add in a big WARN
5127 * to get people's attention.
5129 if (WARN_ON(connector->encoder))
5132 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
5133 if (connector->encoder_ids[i] == 0) {
5134 connector->encoder_ids[i] = encoder->base.id;
5140 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
5143 * drm_mode_crtc_set_gamma_size - set the gamma table size
5144 * @crtc: CRTC to set the gamma table size for
5145 * @gamma_size: size of the gamma table
5147 * Drivers which support gamma tables should set this to the supported gamma
5148 * table size when initializing the CRTC. Currently the drm core only supports a
5149 * fixed gamma table size.
5152 * Zero on success, negative errno on failure.
5154 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
5157 crtc->gamma_size = gamma_size;
5159 crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
5161 if (!crtc->gamma_store) {
5162 crtc->gamma_size = 0;
5168 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
5171 * drm_mode_gamma_set_ioctl - set the gamma table
5174 * @file_priv: DRM file info
5176 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
5177 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
5179 * Called by the user via ioctl.
5182 * Zero on success, negative errno on failure.
5184 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
5185 void *data, struct drm_file *file_priv)
5187 struct drm_mode_crtc_lut *crtc_lut = data;
5188 struct drm_crtc *crtc;
5189 void *r_base, *g_base, *b_base;
5193 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5196 drm_modeset_lock_all(dev);
5197 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5203 if (crtc->funcs->gamma_set == NULL) {
5208 /* memcpy into gamma store */
5209 if (crtc_lut->gamma_size != crtc->gamma_size) {
5214 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5215 r_base = crtc->gamma_store;
5216 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
5221 g_base = r_base + size;
5222 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
5227 b_base = g_base + size;
5228 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
5233 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
5236 drm_modeset_unlock_all(dev);
5242 * drm_mode_gamma_get_ioctl - get the gamma table
5245 * @file_priv: DRM file info
5247 * Copy the current gamma table into the storage provided. This also provides
5248 * the gamma table size the driver expects, which can be used to size the
5249 * allocated storage.
5251 * Called by the user via ioctl.
5254 * Zero on success, negative errno on failure.
5256 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
5257 void *data, struct drm_file *file_priv)
5259 struct drm_mode_crtc_lut *crtc_lut = data;
5260 struct drm_crtc *crtc;
5261 void *r_base, *g_base, *b_base;
5265 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5268 drm_modeset_lock_all(dev);
5269 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5275 /* memcpy into gamma store */
5276 if (crtc_lut->gamma_size != crtc->gamma_size) {
5281 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5282 r_base = crtc->gamma_store;
5283 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
5288 g_base = r_base + size;
5289 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
5294 b_base = g_base + size;
5295 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
5300 drm_modeset_unlock_all(dev);
5305 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
5308 * @file_priv: DRM file info
5310 * This schedules an asynchronous update on a given CRTC, called page flip.
5311 * Optionally a drm event is generated to signal the completion of the event.
5312 * Generic drivers cannot assume that a pageflip with changed framebuffer
5313 * properties (including driver specific metadata like tiling layout) will work,
5314 * but some drivers support e.g. pixel format changes through the pageflip
5317 * Called by the user via ioctl.
5320 * Zero on success, negative errno on failure.
5322 int drm_mode_page_flip_ioctl(struct drm_device *dev,
5323 void *data, struct drm_file *file_priv)
5325 struct drm_mode_crtc_page_flip *page_flip = data;
5326 struct drm_crtc *crtc;
5327 struct drm_framebuffer *fb = NULL;
5328 struct drm_pending_vblank_event *e = NULL;
5331 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
5332 page_flip->reserved != 0)
5335 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
5338 crtc = drm_crtc_find(dev, page_flip->crtc_id);
5342 drm_modeset_lock_crtc(crtc, crtc->primary);
5343 if (crtc->primary->fb == NULL) {
5344 /* The framebuffer is currently unbound, presumably
5345 * due to a hotplug event, that userspace has not
5352 if (crtc->funcs->page_flip == NULL)
5355 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
5362 const struct drm_plane_state *state = crtc->primary->state;
5364 ret = check_src_coords(state->src_x, state->src_y,
5365 state->src_w, state->src_h, fb);
5367 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
5372 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
5373 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
5378 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
5379 e = kzalloc(sizeof *e, GFP_KERNEL);
5384 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
5385 e->event.base.length = sizeof(e->event);
5386 e->event.user_data = page_flip->user_data;
5387 ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base);
5394 crtc->primary->old_fb = crtc->primary->fb;
5395 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
5397 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT)
5398 drm_event_cancel_free(dev, &e->base);
5399 /* Keep the old fb, don't unref it. */
5400 crtc->primary->old_fb = NULL;
5402 crtc->primary->fb = fb;
5403 /* Unref only the old framebuffer. */
5409 drm_framebuffer_unreference(fb);
5410 if (crtc->primary->old_fb)
5411 drm_framebuffer_unreference(crtc->primary->old_fb);
5412 crtc->primary->old_fb = NULL;
5413 drm_modeset_unlock_crtc(crtc);
5419 * drm_mode_config_reset - call ->reset callbacks
5422 * This functions calls all the crtc's, encoder's and connector's ->reset
5423 * callback. Drivers can use this in e.g. their driver load or resume code to
5424 * reset hardware and software state.
5426 void drm_mode_config_reset(struct drm_device *dev)
5428 struct drm_crtc *crtc;
5429 struct drm_plane *plane;
5430 struct drm_encoder *encoder;
5431 struct drm_connector *connector;
5433 drm_for_each_plane(plane, dev)
5434 if (plane->funcs->reset)
5435 plane->funcs->reset(plane);
5437 drm_for_each_crtc(crtc, dev)
5438 if (crtc->funcs->reset)
5439 crtc->funcs->reset(crtc);
5441 drm_for_each_encoder(encoder, dev)
5442 if (encoder->funcs->reset)
5443 encoder->funcs->reset(encoder);
5445 mutex_lock(&dev->mode_config.mutex);
5446 drm_for_each_connector(connector, dev)
5447 if (connector->funcs->reset)
5448 connector->funcs->reset(connector);
5449 mutex_unlock(&dev->mode_config.mutex);
5451 EXPORT_SYMBOL(drm_mode_config_reset);
5454 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5457 * @file_priv: DRM file info
5459 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5460 * TTM or something else entirely) and returns the resulting buffer handle. This
5461 * handle can then be wrapped up into a framebuffer modeset object.
5463 * Note that userspace is not allowed to use such objects for render
5464 * acceleration - drivers must create their own private ioctls for such a use
5467 * Called by the user via ioctl.
5470 * Zero on success, negative errno on failure.
5472 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
5473 void *data, struct drm_file *file_priv)
5475 struct drm_mode_create_dumb *args = data;
5476 u32 cpp, stride, size;
5478 if (!dev->driver->dumb_create)
5480 if (!args->width || !args->height || !args->bpp)
5483 /* overflow checks for 32bit size calculations */
5484 /* NOTE: DIV_ROUND_UP() can overflow */
5485 cpp = DIV_ROUND_UP(args->bpp, 8);
5486 if (!cpp || cpp > 0xffffffffU / args->width)
5488 stride = cpp * args->width;
5489 if (args->height > 0xffffffffU / stride)
5492 /* test for wrap-around */
5493 size = args->height * stride;
5494 if (PAGE_ALIGN(size) == 0)
5498 * handle, pitch and size are output parameters. Zero them out to
5499 * prevent drivers from accidentally using uninitialized data. Since
5500 * not all existing userspace is clearing these fields properly we
5501 * cannot reject IOCTL with garbage in them.
5507 return dev->driver->dumb_create(file_priv, dev, args);
5511 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5514 * @file_priv: DRM file info
5516 * Allocate an offset in the drm device node's address space to be able to
5517 * memory map a dumb buffer.
5519 * Called by the user via ioctl.
5522 * Zero on success, negative errno on failure.
5524 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
5525 void *data, struct drm_file *file_priv)
5527 struct drm_mode_map_dumb *args = data;
5529 /* call driver ioctl to get mmap offset */
5530 if (!dev->driver->dumb_map_offset)
5533 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
5537 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5540 * @file_priv: DRM file info
5542 * This destroys the userspace handle for the given dumb backing storage buffer.
5543 * Since buffer objects must be reference counted in the kernel a buffer object
5544 * won't be immediately freed if a framebuffer modeset object still uses it.
5546 * Called by the user via ioctl.
5549 * Zero on success, negative errno on failure.
5551 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
5552 void *data, struct drm_file *file_priv)
5554 struct drm_mode_destroy_dumb *args = data;
5556 if (!dev->driver->dumb_destroy)
5559 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
5563 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5564 * @format: pixel format (DRM_FORMAT_*)
5565 * @depth: storage for the depth value
5566 * @bpp: storage for the bpp value
5568 * This only supports RGB formats here for compat with code that doesn't use
5569 * pixel formats directly yet.
5571 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
5576 case DRM_FORMAT_RGB332:
5577 case DRM_FORMAT_BGR233:
5581 case DRM_FORMAT_XRGB1555:
5582 case DRM_FORMAT_XBGR1555:
5583 case DRM_FORMAT_RGBX5551:
5584 case DRM_FORMAT_BGRX5551:
5585 case DRM_FORMAT_ARGB1555:
5586 case DRM_FORMAT_ABGR1555:
5587 case DRM_FORMAT_RGBA5551:
5588 case DRM_FORMAT_BGRA5551:
5592 case DRM_FORMAT_RGB565:
5593 case DRM_FORMAT_BGR565:
5597 case DRM_FORMAT_RGB888:
5598 case DRM_FORMAT_BGR888:
5602 case DRM_FORMAT_XRGB8888:
5603 case DRM_FORMAT_XBGR8888:
5604 case DRM_FORMAT_RGBX8888:
5605 case DRM_FORMAT_BGRX8888:
5609 case DRM_FORMAT_XRGB2101010:
5610 case DRM_FORMAT_XBGR2101010:
5611 case DRM_FORMAT_RGBX1010102:
5612 case DRM_FORMAT_BGRX1010102:
5613 case DRM_FORMAT_ARGB2101010:
5614 case DRM_FORMAT_ABGR2101010:
5615 case DRM_FORMAT_RGBA1010102:
5616 case DRM_FORMAT_BGRA1010102:
5620 case DRM_FORMAT_ARGB8888:
5621 case DRM_FORMAT_ABGR8888:
5622 case DRM_FORMAT_RGBA8888:
5623 case DRM_FORMAT_BGRA8888:
5628 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5629 drm_get_format_name(format));
5635 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
5638 * drm_format_num_planes - get the number of planes for format
5639 * @format: pixel format (DRM_FORMAT_*)
5642 * The number of planes used by the specified pixel format.
5644 int drm_format_num_planes(uint32_t format)
5647 case DRM_FORMAT_YUV410:
5648 case DRM_FORMAT_YVU410:
5649 case DRM_FORMAT_YUV411:
5650 case DRM_FORMAT_YVU411:
5651 case DRM_FORMAT_YUV420:
5652 case DRM_FORMAT_YVU420:
5653 case DRM_FORMAT_YUV422:
5654 case DRM_FORMAT_YVU422:
5655 case DRM_FORMAT_YUV444:
5656 case DRM_FORMAT_YVU444:
5658 case DRM_FORMAT_NV12:
5659 case DRM_FORMAT_NV21:
5660 case DRM_FORMAT_NV16:
5661 case DRM_FORMAT_NV61:
5662 case DRM_FORMAT_NV24:
5663 case DRM_FORMAT_NV42:
5669 EXPORT_SYMBOL(drm_format_num_planes);
5672 * drm_format_plane_cpp - determine the bytes per pixel value
5673 * @format: pixel format (DRM_FORMAT_*)
5674 * @plane: plane index
5677 * The bytes per pixel value for the specified plane.
5679 int drm_format_plane_cpp(uint32_t format, int plane)
5684 if (plane >= drm_format_num_planes(format))
5688 case DRM_FORMAT_YUYV:
5689 case DRM_FORMAT_YVYU:
5690 case DRM_FORMAT_UYVY:
5691 case DRM_FORMAT_VYUY:
5693 case DRM_FORMAT_NV12:
5694 case DRM_FORMAT_NV21:
5695 case DRM_FORMAT_NV16:
5696 case DRM_FORMAT_NV61:
5697 case DRM_FORMAT_NV24:
5698 case DRM_FORMAT_NV42:
5699 return plane ? 2 : 1;
5700 case DRM_FORMAT_YUV410:
5701 case DRM_FORMAT_YVU410:
5702 case DRM_FORMAT_YUV411:
5703 case DRM_FORMAT_YVU411:
5704 case DRM_FORMAT_YUV420:
5705 case DRM_FORMAT_YVU420:
5706 case DRM_FORMAT_YUV422:
5707 case DRM_FORMAT_YVU422:
5708 case DRM_FORMAT_YUV444:
5709 case DRM_FORMAT_YVU444:
5712 drm_fb_get_bpp_depth(format, &depth, &bpp);
5716 EXPORT_SYMBOL(drm_format_plane_cpp);
5719 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5720 * @format: pixel format (DRM_FORMAT_*)
5723 * The horizontal chroma subsampling factor for the
5724 * specified pixel format.
5726 int drm_format_horz_chroma_subsampling(uint32_t format)
5729 case DRM_FORMAT_YUV411:
5730 case DRM_FORMAT_YVU411:
5731 case DRM_FORMAT_YUV410:
5732 case DRM_FORMAT_YVU410:
5734 case DRM_FORMAT_YUYV:
5735 case DRM_FORMAT_YVYU:
5736 case DRM_FORMAT_UYVY:
5737 case DRM_FORMAT_VYUY:
5738 case DRM_FORMAT_NV12:
5739 case DRM_FORMAT_NV21:
5740 case DRM_FORMAT_NV16:
5741 case DRM_FORMAT_NV61:
5742 case DRM_FORMAT_YUV422:
5743 case DRM_FORMAT_YVU422:
5744 case DRM_FORMAT_YUV420:
5745 case DRM_FORMAT_YVU420:
5751 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5754 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5755 * @format: pixel format (DRM_FORMAT_*)
5758 * The vertical chroma subsampling factor for the
5759 * specified pixel format.
5761 int drm_format_vert_chroma_subsampling(uint32_t format)
5764 case DRM_FORMAT_YUV410:
5765 case DRM_FORMAT_YVU410:
5767 case DRM_FORMAT_YUV420:
5768 case DRM_FORMAT_YVU420:
5769 case DRM_FORMAT_NV12:
5770 case DRM_FORMAT_NV21:
5776 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
5779 * drm_format_plane_width - width of the plane given the first plane
5780 * @width: width of the first plane
5781 * @format: pixel format
5782 * @plane: plane index
5785 * The width of @plane, given that the width of the first plane is @width.
5787 int drm_format_plane_width(int width, uint32_t format, int plane)
5789 if (plane >= drm_format_num_planes(format))
5795 return width / drm_format_horz_chroma_subsampling(format);
5797 EXPORT_SYMBOL(drm_format_plane_width);
5800 * drm_format_plane_height - height of the plane given the first plane
5801 * @height: height of the first plane
5802 * @format: pixel format
5803 * @plane: plane index
5806 * The height of @plane, given that the height of the first plane is @height.
5808 int drm_format_plane_height(int height, uint32_t format, int plane)
5810 if (plane >= drm_format_num_planes(format))
5816 return height / drm_format_vert_chroma_subsampling(format);
5818 EXPORT_SYMBOL(drm_format_plane_height);
5821 * drm_rotation_simplify() - Try to simplify the rotation
5822 * @rotation: Rotation to be simplified
5823 * @supported_rotations: Supported rotations
5825 * Attempt to simplify the rotation to a form that is supported.
5826 * Eg. if the hardware supports everything except DRM_REFLECT_X
5827 * one could call this function like this:
5829 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5830 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5831 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5833 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5834 * transforms the hardware supports, this function may not
5835 * be able to produce a supported transform, so the caller should
5836 * check the result afterwards.
5838 unsigned int drm_rotation_simplify(unsigned int rotation,
5839 unsigned int supported_rotations)
5841 if (rotation & ~supported_rotations) {
5842 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5843 rotation = (rotation & DRM_REFLECT_MASK) |
5844 BIT((ffs(rotation & DRM_ROTATE_MASK) + 1) % 4);
5849 EXPORT_SYMBOL(drm_rotation_simplify);
5852 * drm_mode_config_init - initialize DRM mode_configuration structure
5855 * Initialize @dev's mode_config structure, used for tracking the graphics
5856 * configuration of @dev.
5858 * Since this initializes the modeset locks, no locking is possible. Which is no
5859 * problem, since this should happen single threaded at init time. It is the
5860 * driver's problem to ensure this guarantee.
5863 void drm_mode_config_init(struct drm_device *dev)
5865 mutex_init(&dev->mode_config.mutex);
5866 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
5867 mutex_init(&dev->mode_config.idr_mutex);
5868 mutex_init(&dev->mode_config.fb_lock);
5869 mutex_init(&dev->mode_config.blob_lock);
5870 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5871 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5872 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5873 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5874 INIT_LIST_HEAD(&dev->mode_config.property_list);
5875 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5876 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5877 idr_init(&dev->mode_config.crtc_idr);
5878 idr_init(&dev->mode_config.tile_idr);
5879 ida_init(&dev->mode_config.connector_ida);
5881 drm_modeset_lock_all(dev);
5882 drm_mode_create_standard_properties(dev);
5883 drm_modeset_unlock_all(dev);
5885 /* Just to be sure */
5886 dev->mode_config.num_fb = 0;
5887 dev->mode_config.num_connector = 0;
5888 dev->mode_config.num_crtc = 0;
5889 dev->mode_config.num_encoder = 0;
5890 dev->mode_config.num_overlay_plane = 0;
5891 dev->mode_config.num_total_plane = 0;
5893 EXPORT_SYMBOL(drm_mode_config_init);
5896 * drm_mode_config_cleanup - free up DRM mode_config info
5899 * Free up all the connectors and CRTCs associated with this DRM device, then
5900 * free up the framebuffers and associated buffer objects.
5902 * Note that since this /should/ happen single-threaded at driver/device
5903 * teardown time, no locking is required. It's the driver's job to ensure that
5904 * this guarantee actually holds true.
5906 * FIXME: cleanup any dangling user buffer objects too
5908 void drm_mode_config_cleanup(struct drm_device *dev)
5910 struct drm_connector *connector, *ot;
5911 struct drm_crtc *crtc, *ct;
5912 struct drm_encoder *encoder, *enct;
5913 struct drm_framebuffer *fb, *fbt;
5914 struct drm_property *property, *pt;
5915 struct drm_property_blob *blob, *bt;
5916 struct drm_plane *plane, *plt;
5918 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5920 encoder->funcs->destroy(encoder);
5923 list_for_each_entry_safe(connector, ot,
5924 &dev->mode_config.connector_list, head) {
5925 connector->funcs->destroy(connector);
5928 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5930 drm_property_destroy(dev, property);
5933 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5935 plane->funcs->destroy(plane);
5938 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5939 crtc->funcs->destroy(crtc);
5942 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5944 drm_property_unreference_blob(blob);
5948 * Single-threaded teardown context, so it's not required to grab the
5949 * fb_lock to protect against concurrent fb_list access. Contrary, it
5950 * would actually deadlock with the drm_framebuffer_cleanup function.
5952 * Also, if there are any framebuffers left, that's a driver leak now,
5953 * so politely WARN about this.
5955 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5956 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5957 drm_framebuffer_free(&fb->base.refcount);
5960 ida_destroy(&dev->mode_config.connector_ida);
5961 idr_destroy(&dev->mode_config.tile_idr);
5962 idr_destroy(&dev->mode_config.crtc_idr);
5963 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
5965 EXPORT_SYMBOL(drm_mode_config_cleanup);
5967 struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5968 unsigned int supported_rotations)
5970 static const struct drm_prop_enum_list props[] = {
5971 { DRM_ROTATE_0, "rotate-0" },
5972 { DRM_ROTATE_90, "rotate-90" },
5973 { DRM_ROTATE_180, "rotate-180" },
5974 { DRM_ROTATE_270, "rotate-270" },
5975 { DRM_REFLECT_X, "reflect-x" },
5976 { DRM_REFLECT_Y, "reflect-y" },
5979 return drm_property_create_bitmask(dev, 0, "rotation",
5980 props, ARRAY_SIZE(props),
5981 supported_rotations);
5983 EXPORT_SYMBOL(drm_mode_create_rotation_property);
5988 * Tile groups are used to represent tiled monitors with a unique
5989 * integer identifier. Tiled monitors using DisplayID v1.3 have
5990 * a unique 8-byte handle, we store this in a tile group, so we
5991 * have a common identifier for all tiles in a monitor group.
5993 static void drm_tile_group_free(struct kref *kref)
5995 struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
5996 struct drm_device *dev = tg->dev;
5997 mutex_lock(&dev->mode_config.idr_mutex);
5998 idr_remove(&dev->mode_config.tile_idr, tg->id);
5999 mutex_unlock(&dev->mode_config.idr_mutex);
6004 * drm_mode_put_tile_group - drop a reference to a tile group.
6006 * @tg: tile group to drop reference to.
6008 * drop reference to tile group and free if 0.
6010 void drm_mode_put_tile_group(struct drm_device *dev,
6011 struct drm_tile_group *tg)
6013 kref_put(&tg->refcount, drm_tile_group_free);
6017 * drm_mode_get_tile_group - get a reference to an existing tile group
6019 * @topology: 8-bytes unique per monitor.
6021 * Use the unique bytes to get a reference to an existing tile group.
6024 * tile group or NULL if not found.
6026 struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
6029 struct drm_tile_group *tg;
6031 mutex_lock(&dev->mode_config.idr_mutex);
6032 idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
6033 if (!memcmp(tg->group_data, topology, 8)) {
6034 if (!kref_get_unless_zero(&tg->refcount))
6036 mutex_unlock(&dev->mode_config.idr_mutex);
6040 mutex_unlock(&dev->mode_config.idr_mutex);
6043 EXPORT_SYMBOL(drm_mode_get_tile_group);
6046 * drm_mode_create_tile_group - create a tile group from a displayid description
6048 * @topology: 8-bytes unique per monitor.
6050 * Create a tile group for the unique monitor, and get a unique
6051 * identifier for the tile group.
6054 * new tile group or error.
6056 struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
6059 struct drm_tile_group *tg;
6062 tg = kzalloc(sizeof(*tg), GFP_KERNEL);
6064 return ERR_PTR(-ENOMEM);
6066 kref_init(&tg->refcount);
6067 memcpy(tg->group_data, topology, 8);
6070 mutex_lock(&dev->mode_config.idr_mutex);
6071 ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
6079 mutex_unlock(&dev->mode_config.idr_mutex);
6082 EXPORT_SYMBOL(drm_mode_create_tile_group);