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,
282 mutex_lock(&dev->mode_config.idr_mutex);
283 ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
286 * Set up the object linking under the protection of the idr
287 * lock so that other users can't see inconsistent state.
290 obj->type = obj_type;
292 mutex_unlock(&dev->mode_config.idr_mutex);
294 return ret < 0 ? ret : 0;
298 * drm_mode_object_get - allocate a new modeset identifier
300 * @obj: object pointer, used to generate unique ID
301 * @obj_type: object type
303 * Create a unique identifier based on @ptr in @dev's identifier space. Used
304 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
305 * modeset identifiers are _not_ reference counted. Hence don't use this for
306 * reference counted modeset objects like framebuffers.
309 * Zero on success, error code on failure.
311 int drm_mode_object_get(struct drm_device *dev,
312 struct drm_mode_object *obj, uint32_t obj_type)
314 return drm_mode_object_get_reg(dev, obj, obj_type, true);
317 static void drm_mode_object_register(struct drm_device *dev,
318 struct drm_mode_object *obj)
320 mutex_lock(&dev->mode_config.idr_mutex);
321 idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
322 mutex_unlock(&dev->mode_config.idr_mutex);
326 * drm_mode_object_put - free a modeset identifer
328 * @object: object to free
330 * Free @id from @dev's unique identifier pool. Note that despite the _get
331 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
332 * for reference counted modeset objects like framebuffers.
334 void drm_mode_object_put(struct drm_device *dev,
335 struct drm_mode_object *object)
337 mutex_lock(&dev->mode_config.idr_mutex);
338 idr_remove(&dev->mode_config.crtc_idr, object->id);
339 mutex_unlock(&dev->mode_config.idr_mutex);
342 static struct drm_mode_object *_object_find(struct drm_device *dev,
343 uint32_t id, uint32_t type)
345 struct drm_mode_object *obj = NULL;
347 mutex_lock(&dev->mode_config.idr_mutex);
348 obj = idr_find(&dev->mode_config.crtc_idr, id);
349 if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
351 if (obj && obj->id != id)
353 /* don't leak out unref'd fb's */
355 (obj->type == DRM_MODE_OBJECT_FB ||
356 obj->type == DRM_MODE_OBJECT_BLOB))
358 mutex_unlock(&dev->mode_config.idr_mutex);
364 * drm_mode_object_find - look up a drm object with static lifetime
366 * @id: id of the mode object
367 * @type: type of the mode object
369 * Note that framebuffers cannot be looked up with this functions - since those
370 * are reference counted, they need special treatment. Even with
371 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
372 * rather than WARN_ON()).
374 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
375 uint32_t id, uint32_t type)
377 struct drm_mode_object *obj = NULL;
379 /* Framebuffers are reference counted and need their own lookup
381 WARN_ON(type == DRM_MODE_OBJECT_FB || type == DRM_MODE_OBJECT_BLOB);
382 obj = _object_find(dev, id, type);
385 EXPORT_SYMBOL(drm_mode_object_find);
388 * drm_framebuffer_init - initialize a framebuffer
390 * @fb: framebuffer to be initialized
391 * @funcs: ... with these functions
393 * Allocates an ID for the framebuffer's parent mode object, sets its mode
394 * functions & device file and adds it to the master fd list.
397 * This functions publishes the fb and makes it available for concurrent access
398 * by other users. Which means by this point the fb _must_ be fully set up -
399 * since all the fb attributes are invariant over its lifetime, no further
400 * locking but only correct reference counting is required.
403 * Zero on success, error code on failure.
405 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
406 const struct drm_framebuffer_funcs *funcs)
410 mutex_lock(&dev->mode_config.fb_lock);
411 kref_init(&fb->refcount);
412 INIT_LIST_HEAD(&fb->filp_head);
416 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
420 dev->mode_config.num_fb++;
421 list_add(&fb->head, &dev->mode_config.fb_list);
423 mutex_unlock(&dev->mode_config.fb_lock);
427 EXPORT_SYMBOL(drm_framebuffer_init);
429 /* dev->mode_config.fb_lock must be held! */
430 static void __drm_framebuffer_unregister(struct drm_device *dev,
431 struct drm_framebuffer *fb)
433 drm_mode_object_put(dev, &fb->base);
438 static void drm_framebuffer_free(struct kref *kref)
440 struct drm_framebuffer *fb =
441 container_of(kref, struct drm_framebuffer, refcount);
442 struct drm_device *dev = fb->dev;
445 * The lookup idr holds a weak reference, which has not necessarily been
446 * removed at this point. Check for that.
448 mutex_lock(&dev->mode_config.fb_lock);
450 /* Mark fb as reaped and drop idr ref. */
451 __drm_framebuffer_unregister(dev, fb);
453 mutex_unlock(&dev->mode_config.fb_lock);
455 fb->funcs->destroy(fb);
458 static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
461 struct drm_mode_object *obj = NULL;
462 struct drm_framebuffer *fb;
464 mutex_lock(&dev->mode_config.idr_mutex);
465 obj = idr_find(&dev->mode_config.crtc_idr, id);
466 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
470 mutex_unlock(&dev->mode_config.idr_mutex);
476 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
478 * @id: id of the fb object
480 * If successful, this grabs an additional reference to the framebuffer -
481 * callers need to make sure to eventually unreference the returned framebuffer
482 * again, using @drm_framebuffer_unreference.
484 struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
487 struct drm_framebuffer *fb;
489 mutex_lock(&dev->mode_config.fb_lock);
490 fb = __drm_framebuffer_lookup(dev, id);
492 if (!kref_get_unless_zero(&fb->refcount))
495 mutex_unlock(&dev->mode_config.fb_lock);
499 EXPORT_SYMBOL(drm_framebuffer_lookup);
502 * drm_framebuffer_unreference - unref a framebuffer
503 * @fb: framebuffer to unref
505 * This functions decrements the fb's refcount and frees it if it drops to zero.
507 void drm_framebuffer_unreference(struct drm_framebuffer *fb)
509 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
510 kref_put(&fb->refcount, drm_framebuffer_free);
512 EXPORT_SYMBOL(drm_framebuffer_unreference);
515 * drm_framebuffer_reference - incr the fb refcnt
518 * This functions increments the fb's refcount.
520 void drm_framebuffer_reference(struct drm_framebuffer *fb)
522 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
523 kref_get(&fb->refcount);
525 EXPORT_SYMBOL(drm_framebuffer_reference);
528 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
529 * @fb: fb to unregister
531 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
532 * those used for fbdev. Note that the caller must hold a reference of it's own,
533 * i.e. the object may not be destroyed through this call (since it'll lead to a
534 * locking inversion).
536 void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
538 struct drm_device *dev;
545 mutex_lock(&dev->mode_config.fb_lock);
546 /* Mark fb as reaped and drop idr ref. */
547 __drm_framebuffer_unregister(dev, fb);
548 mutex_unlock(&dev->mode_config.fb_lock);
550 EXPORT_SYMBOL(drm_framebuffer_unregister_private);
553 * drm_framebuffer_cleanup - remove a framebuffer object
554 * @fb: framebuffer to remove
556 * Cleanup framebuffer. This function is intended to be used from the drivers
557 * ->destroy callback. It can also be used to clean up driver private
558 * framebuffers embedded into a larger structure.
560 * Note that this function does not remove the fb from active usuage - if it is
561 * still used anywhere, hilarity can ensue since userspace could call getfb on
562 * the id and get back -EINVAL. Obviously no concern at driver unload time.
564 * Also, the framebuffer will not be removed from the lookup idr - for
565 * user-created framebuffers this will happen in in the rmfb ioctl. For
566 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
567 * drm_framebuffer_unregister_private.
569 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
571 struct drm_device *dev = fb->dev;
573 mutex_lock(&dev->mode_config.fb_lock);
575 dev->mode_config.num_fb--;
576 mutex_unlock(&dev->mode_config.fb_lock);
578 EXPORT_SYMBOL(drm_framebuffer_cleanup);
581 * drm_framebuffer_remove - remove and unreference a framebuffer object
582 * @fb: framebuffer to remove
584 * Scans all the CRTCs and planes in @dev's mode_config. If they're
585 * using @fb, removes it, setting it to NULL. Then drops the reference to the
586 * passed-in framebuffer. Might take the modeset locks.
588 * Note that this function optimizes the cleanup away if the caller holds the
589 * last reference to the framebuffer. It is also guaranteed to not take the
590 * modeset locks in this case.
592 void drm_framebuffer_remove(struct drm_framebuffer *fb)
594 struct drm_device *dev;
595 struct drm_crtc *crtc;
596 struct drm_plane *plane;
597 struct drm_mode_set set;
605 WARN_ON(!list_empty(&fb->filp_head));
608 * drm ABI mandates that we remove any deleted framebuffers from active
609 * useage. But since most sane clients only remove framebuffers they no
610 * longer need, try to optimize this away.
612 * Since we're holding a reference ourselves, observing a refcount of 1
613 * means that we're the last holder and can skip it. Also, the refcount
614 * can never increase from 1 again, so we don't need any barriers or
617 * Note that userspace could try to race with use and instate a new
618 * usage _after_ we've cleared all current ones. End result will be an
619 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
622 if (atomic_read(&fb->refcount.refcount) > 1) {
623 drm_modeset_lock_all(dev);
624 /* remove from any CRTC */
625 drm_for_each_crtc(crtc, dev) {
626 if (crtc->primary->fb == fb) {
627 /* should turn off the crtc */
628 memset(&set, 0, sizeof(struct drm_mode_set));
631 ret = drm_mode_set_config_internal(&set);
633 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
637 drm_for_each_plane(plane, dev) {
639 drm_plane_force_disable(plane);
641 drm_modeset_unlock_all(dev);
644 drm_framebuffer_unreference(fb);
646 EXPORT_SYMBOL(drm_framebuffer_remove);
648 DEFINE_WW_CLASS(crtc_ww_class);
650 static unsigned int drm_num_crtcs(struct drm_device *dev)
652 unsigned int num = 0;
653 struct drm_crtc *tmp;
655 drm_for_each_crtc(tmp, dev) {
663 * drm_crtc_init_with_planes - Initialise a new CRTC object with
664 * specified primary and cursor planes.
666 * @crtc: CRTC object to init
667 * @primary: Primary plane for CRTC
668 * @cursor: Cursor plane for CRTC
669 * @funcs: callbacks for the new CRTC
670 * @name: printf style format string for the CRTC name, or NULL for default name
672 * Inits a new object created as base part of a driver crtc object.
675 * Zero on success, error code on failure.
677 int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
678 struct drm_plane *primary,
679 struct drm_plane *cursor,
680 const struct drm_crtc_funcs *funcs,
681 const char *name, ...)
683 struct drm_mode_config *config = &dev->mode_config;
686 WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY);
687 WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR);
692 drm_modeset_lock_init(&crtc->mutex);
693 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
701 crtc->name = kvasprintf(GFP_KERNEL, name, ap);
704 crtc->name = kasprintf(GFP_KERNEL, "crtc-%d",
708 drm_mode_object_put(dev, &crtc->base);
712 crtc->base.properties = &crtc->properties;
714 list_add_tail(&crtc->head, &config->crtc_list);
717 crtc->primary = primary;
718 crtc->cursor = cursor;
720 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
722 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
724 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
725 drm_object_attach_property(&crtc->base, config->prop_active, 0);
726 drm_object_attach_property(&crtc->base, config->prop_mode_id, 0);
731 EXPORT_SYMBOL(drm_crtc_init_with_planes);
734 * drm_crtc_cleanup - Clean up the core crtc usage
735 * @crtc: CRTC to cleanup
737 * This function cleans up @crtc and removes it from the DRM mode setting
738 * core. Note that the function does *not* free the crtc structure itself,
739 * this is the responsibility of the caller.
741 void drm_crtc_cleanup(struct drm_crtc *crtc)
743 struct drm_device *dev = crtc->dev;
745 kfree(crtc->gamma_store);
746 crtc->gamma_store = NULL;
748 drm_modeset_lock_fini(&crtc->mutex);
750 drm_mode_object_put(dev, &crtc->base);
751 list_del(&crtc->head);
752 dev->mode_config.num_crtc--;
754 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
755 if (crtc->state && crtc->funcs->atomic_destroy_state)
756 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
760 memset(crtc, 0, sizeof(*crtc));
762 EXPORT_SYMBOL(drm_crtc_cleanup);
765 * drm_crtc_index - find the index of a registered CRTC
766 * @crtc: CRTC to find index for
768 * Given a registered CRTC, return the index of that CRTC within a DRM
769 * device's list of CRTCs.
771 unsigned int drm_crtc_index(struct drm_crtc *crtc)
773 unsigned int index = 0;
774 struct drm_crtc *tmp;
776 drm_for_each_crtc(tmp, crtc->dev) {
785 EXPORT_SYMBOL(drm_crtc_index);
788 * drm_mode_remove - remove and free a mode
789 * @connector: connector list to modify
790 * @mode: mode to remove
792 * Remove @mode from @connector's mode list, then free it.
794 static void drm_mode_remove(struct drm_connector *connector,
795 struct drm_display_mode *mode)
797 list_del(&mode->head);
798 drm_mode_destroy(connector->dev, mode);
802 * drm_display_info_set_bus_formats - set the supported bus formats
803 * @info: display info to store bus formats in
804 * @formats: array containing the supported bus formats
805 * @num_formats: the number of entries in the fmts array
807 * Store the supported bus formats in display info structure.
808 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
809 * a full list of available formats.
811 int drm_display_info_set_bus_formats(struct drm_display_info *info,
813 unsigned int num_formats)
817 if (!formats && num_formats)
820 if (formats && num_formats) {
821 fmts = kmemdup(formats, sizeof(*formats) * num_formats,
827 kfree(info->bus_formats);
828 info->bus_formats = fmts;
829 info->num_bus_formats = num_formats;
833 EXPORT_SYMBOL(drm_display_info_set_bus_formats);
836 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
837 * @connector: connector to quwery
839 * The kernel supports per-connector configration of its consoles through
840 * use of the video= parameter. This function parses that option and
841 * extracts the user's specified mode (or enable/disable status) for a
842 * particular connector. This is typically only used during the early fbdev
845 static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
847 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
850 if (fb_get_options(connector->name, &option))
853 if (!drm_mode_parse_command_line_for_connector(option,
861 switch (mode->force) {
865 case DRM_FORCE_ON_DIGITAL:
874 DRM_INFO("forcing %s connector %s\n", connector->name, s);
875 connector->force = mode->force;
878 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
880 mode->xres, mode->yres,
881 mode->refresh_specified ? mode->refresh : 60,
882 mode->rb ? " reduced blanking" : "",
883 mode->margins ? " with margins" : "",
884 mode->interlace ? " interlaced" : "");
888 * drm_connector_init - Init a preallocated connector
890 * @connector: the connector to init
891 * @funcs: callbacks for this connector
892 * @connector_type: user visible type of the connector
894 * Initialises a preallocated connector. Connectors should be
895 * subclassed as part of driver connector objects.
898 * Zero on success, error code on failure.
900 int drm_connector_init(struct drm_device *dev,
901 struct drm_connector *connector,
902 const struct drm_connector_funcs *funcs,
905 struct drm_mode_config *config = &dev->mode_config;
907 struct ida *connector_ida =
908 &drm_connector_enum_list[connector_type].ida;
910 drm_modeset_lock_all(dev);
912 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false);
916 connector->base.properties = &connector->properties;
917 connector->dev = dev;
918 connector->funcs = funcs;
920 connector->connector_id = ida_simple_get(&config->connector_ida, 0, 0, GFP_KERNEL);
921 if (connector->connector_id < 0) {
922 ret = connector->connector_id;
926 connector->connector_type = connector_type;
927 connector->connector_type_id =
928 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
929 if (connector->connector_type_id < 0) {
930 ret = connector->connector_type_id;
934 kasprintf(GFP_KERNEL, "%s-%d",
935 drm_connector_enum_list[connector_type].name,
936 connector->connector_type_id);
937 if (!connector->name) {
939 goto out_put_type_id;
942 INIT_LIST_HEAD(&connector->probed_modes);
943 INIT_LIST_HEAD(&connector->modes);
944 connector->edid_blob_ptr = NULL;
945 connector->status = connector_status_unknown;
947 drm_connector_get_cmdline_mode(connector);
949 /* We should add connectors at the end to avoid upsetting the connector
951 list_add_tail(&connector->head, &config->connector_list);
952 config->num_connector++;
954 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
955 drm_object_attach_property(&connector->base,
956 config->edid_property,
959 drm_object_attach_property(&connector->base,
960 config->dpms_property, 0);
962 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
963 drm_object_attach_property(&connector->base, config->prop_crtc_id, 0);
966 connector->debugfs_entry = NULL;
969 ida_remove(connector_ida, connector->connector_type_id);
972 ida_remove(&config->connector_ida, connector->connector_id);
975 drm_mode_object_put(dev, &connector->base);
978 drm_modeset_unlock_all(dev);
982 EXPORT_SYMBOL(drm_connector_init);
985 * drm_connector_cleanup - cleans up an initialised connector
986 * @connector: connector to cleanup
988 * Cleans up the connector but doesn't free the object.
990 void drm_connector_cleanup(struct drm_connector *connector)
992 struct drm_device *dev = connector->dev;
993 struct drm_display_mode *mode, *t;
995 if (connector->tile_group) {
996 drm_mode_put_tile_group(dev, connector->tile_group);
997 connector->tile_group = NULL;
1000 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
1001 drm_mode_remove(connector, mode);
1003 list_for_each_entry_safe(mode, t, &connector->modes, head)
1004 drm_mode_remove(connector, mode);
1006 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
1007 connector->connector_type_id);
1009 ida_remove(&dev->mode_config.connector_ida,
1010 connector->connector_id);
1012 kfree(connector->display_info.bus_formats);
1013 drm_mode_object_put(dev, &connector->base);
1014 kfree(connector->name);
1015 connector->name = NULL;
1016 list_del(&connector->head);
1017 dev->mode_config.num_connector--;
1019 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
1020 if (connector->state && connector->funcs->atomic_destroy_state)
1021 connector->funcs->atomic_destroy_state(connector,
1024 memset(connector, 0, sizeof(*connector));
1026 EXPORT_SYMBOL(drm_connector_cleanup);
1029 * drm_connector_register - register a connector
1030 * @connector: the connector to register
1032 * Register userspace interfaces for a connector
1035 * Zero on success, error code on failure.
1037 int drm_connector_register(struct drm_connector *connector)
1041 drm_mode_object_register(connector->dev, &connector->base);
1043 ret = drm_sysfs_connector_add(connector);
1047 ret = drm_debugfs_connector_add(connector);
1049 drm_sysfs_connector_remove(connector);
1055 EXPORT_SYMBOL(drm_connector_register);
1058 * drm_connector_unregister - unregister a connector
1059 * @connector: the connector to unregister
1061 * Unregister userspace interfaces for a connector
1063 void drm_connector_unregister(struct drm_connector *connector)
1065 drm_sysfs_connector_remove(connector);
1066 drm_debugfs_connector_remove(connector);
1068 EXPORT_SYMBOL(drm_connector_unregister);
1071 * drm_connector_register_all - register all connectors
1074 * This function registers all connectors in sysfs and other places so that
1075 * userspace can start to access them. Drivers can call it after calling
1076 * drm_dev_register() to complete the device registration, if they don't call
1077 * drm_connector_register() on each connector individually.
1079 * When a device is unplugged and should be removed from userspace access,
1080 * call drm_connector_unregister_all(), which is the inverse of this
1084 * Zero on success, error code on failure.
1086 int drm_connector_register_all(struct drm_device *dev)
1088 struct drm_connector *connector;
1091 mutex_lock(&dev->mode_config.mutex);
1093 drm_for_each_connector(connector, dev) {
1094 ret = drm_connector_register(connector);
1099 mutex_unlock(&dev->mode_config.mutex);
1104 mutex_unlock(&dev->mode_config.mutex);
1105 drm_connector_unregister_all(dev);
1108 EXPORT_SYMBOL(drm_connector_register_all);
1111 * drm_connector_unregister_all - unregister connector userspace interfaces
1114 * This functions unregisters all connectors from sysfs and other places so
1115 * that userspace can no longer access them. Drivers should call this as the
1116 * first step tearing down the device instace, or when the underlying
1117 * physical device disappeared (e.g. USB unplug), right before calling
1118 * drm_dev_unregister().
1120 void drm_connector_unregister_all(struct drm_device *dev)
1122 struct drm_connector *connector;
1124 /* FIXME: taking the mode config mutex ends up in a clash with sysfs */
1125 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1126 drm_connector_unregister(connector);
1128 EXPORT_SYMBOL(drm_connector_unregister_all);
1131 * drm_encoder_init - Init a preallocated encoder
1133 * @encoder: the encoder to init
1134 * @funcs: callbacks for this encoder
1135 * @encoder_type: user visible type of the encoder
1136 * @name: printf style format string for the encoder name, or NULL for default name
1138 * Initialises a preallocated encoder. Encoder should be
1139 * subclassed as part of driver encoder objects.
1142 * Zero on success, error code on failure.
1144 int drm_encoder_init(struct drm_device *dev,
1145 struct drm_encoder *encoder,
1146 const struct drm_encoder_funcs *funcs,
1147 int encoder_type, const char *name, ...)
1151 drm_modeset_lock_all(dev);
1153 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1158 encoder->encoder_type = encoder_type;
1159 encoder->funcs = funcs;
1164 encoder->name = kvasprintf(GFP_KERNEL, name, ap);
1167 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1168 drm_encoder_enum_list[encoder_type].name,
1171 if (!encoder->name) {
1176 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1177 dev->mode_config.num_encoder++;
1181 drm_mode_object_put(dev, &encoder->base);
1184 drm_modeset_unlock_all(dev);
1188 EXPORT_SYMBOL(drm_encoder_init);
1191 * drm_encoder_index - find the index of a registered encoder
1192 * @encoder: encoder to find index for
1194 * Given a registered encoder, return the index of that encoder within a DRM
1195 * device's list of encoders.
1197 unsigned int drm_encoder_index(struct drm_encoder *encoder)
1199 unsigned int index = 0;
1200 struct drm_encoder *tmp;
1202 drm_for_each_encoder(tmp, encoder->dev) {
1211 EXPORT_SYMBOL(drm_encoder_index);
1214 * drm_encoder_cleanup - cleans up an initialised encoder
1215 * @encoder: encoder to cleanup
1217 * Cleans up the encoder but doesn't free the object.
1219 void drm_encoder_cleanup(struct drm_encoder *encoder)
1221 struct drm_device *dev = encoder->dev;
1223 drm_modeset_lock_all(dev);
1224 drm_mode_object_put(dev, &encoder->base);
1225 kfree(encoder->name);
1226 list_del(&encoder->head);
1227 dev->mode_config.num_encoder--;
1228 drm_modeset_unlock_all(dev);
1230 memset(encoder, 0, sizeof(*encoder));
1232 EXPORT_SYMBOL(drm_encoder_cleanup);
1234 static unsigned int drm_num_planes(struct drm_device *dev)
1236 unsigned int num = 0;
1237 struct drm_plane *tmp;
1239 drm_for_each_plane(tmp, dev) {
1247 * drm_universal_plane_init - Initialize a new universal plane object
1249 * @plane: plane object to init
1250 * @possible_crtcs: bitmask of possible CRTCs
1251 * @funcs: callbacks for the new plane
1252 * @formats: array of supported formats (%DRM_FORMAT_*)
1253 * @format_count: number of elements in @formats
1254 * @type: type of plane (overlay, primary, cursor)
1255 * @name: printf style format string for the plane name, or NULL for default name
1257 * Initializes a plane object of type @type.
1260 * Zero on success, error code on failure.
1262 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1263 unsigned long possible_crtcs,
1264 const struct drm_plane_funcs *funcs,
1265 const uint32_t *formats, unsigned int format_count,
1266 enum drm_plane_type type,
1267 const char *name, ...)
1269 struct drm_mode_config *config = &dev->mode_config;
1272 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1276 drm_modeset_lock_init(&plane->mutex);
1278 plane->base.properties = &plane->properties;
1280 plane->funcs = funcs;
1281 plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
1283 if (!plane->format_types) {
1284 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1285 drm_mode_object_put(dev, &plane->base);
1293 plane->name = kvasprintf(GFP_KERNEL, name, ap);
1296 plane->name = kasprintf(GFP_KERNEL, "plane-%d",
1297 drm_num_planes(dev));
1300 kfree(plane->format_types);
1301 drm_mode_object_put(dev, &plane->base);
1305 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1306 plane->format_count = format_count;
1307 plane->possible_crtcs = possible_crtcs;
1310 list_add_tail(&plane->head, &config->plane_list);
1311 config->num_total_plane++;
1312 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1313 config->num_overlay_plane++;
1315 drm_object_attach_property(&plane->base,
1316 config->plane_type_property,
1319 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
1320 drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
1321 drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
1322 drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
1323 drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
1324 drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
1325 drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
1326 drm_object_attach_property(&plane->base, config->prop_src_x, 0);
1327 drm_object_attach_property(&plane->base, config->prop_src_y, 0);
1328 drm_object_attach_property(&plane->base, config->prop_src_w, 0);
1329 drm_object_attach_property(&plane->base, config->prop_src_h, 0);
1334 EXPORT_SYMBOL(drm_universal_plane_init);
1337 * drm_plane_init - Initialize a legacy plane
1339 * @plane: plane object to init
1340 * @possible_crtcs: bitmask of possible CRTCs
1341 * @funcs: callbacks for the new plane
1342 * @formats: array of supported formats (%DRM_FORMAT_*)
1343 * @format_count: number of elements in @formats
1344 * @is_primary: plane type (primary vs overlay)
1346 * Legacy API to initialize a DRM plane.
1348 * New drivers should call drm_universal_plane_init() instead.
1351 * Zero on success, error code on failure.
1353 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1354 unsigned long possible_crtcs,
1355 const struct drm_plane_funcs *funcs,
1356 const uint32_t *formats, unsigned int format_count,
1359 enum drm_plane_type type;
1361 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1362 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1363 formats, format_count, type, NULL);
1365 EXPORT_SYMBOL(drm_plane_init);
1368 * drm_plane_cleanup - Clean up the core plane usage
1369 * @plane: plane to cleanup
1371 * This function cleans up @plane and removes it from the DRM mode setting
1372 * core. Note that the function does *not* free the plane structure itself,
1373 * this is the responsibility of the caller.
1375 void drm_plane_cleanup(struct drm_plane *plane)
1377 struct drm_device *dev = plane->dev;
1379 drm_modeset_lock_all(dev);
1380 kfree(plane->format_types);
1381 drm_mode_object_put(dev, &plane->base);
1383 BUG_ON(list_empty(&plane->head));
1385 list_del(&plane->head);
1386 dev->mode_config.num_total_plane--;
1387 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1388 dev->mode_config.num_overlay_plane--;
1389 drm_modeset_unlock_all(dev);
1391 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1392 if (plane->state && plane->funcs->atomic_destroy_state)
1393 plane->funcs->atomic_destroy_state(plane, plane->state);
1397 memset(plane, 0, sizeof(*plane));
1399 EXPORT_SYMBOL(drm_plane_cleanup);
1402 * drm_plane_index - find the index of a registered plane
1403 * @plane: plane to find index for
1405 * Given a registered plane, return the index of that CRTC within a DRM
1406 * device's list of planes.
1408 unsigned int drm_plane_index(struct drm_plane *plane)
1410 unsigned int index = 0;
1411 struct drm_plane *tmp;
1413 drm_for_each_plane(tmp, plane->dev) {
1422 EXPORT_SYMBOL(drm_plane_index);
1425 * drm_plane_from_index - find the registered plane at an index
1427 * @idx: index of registered plane to find for
1429 * Given a plane index, return the registered plane from DRM device's
1430 * list of planes with matching index.
1433 drm_plane_from_index(struct drm_device *dev, int idx)
1435 struct drm_plane *plane;
1438 drm_for_each_plane(plane, dev) {
1445 EXPORT_SYMBOL(drm_plane_from_index);
1448 * drm_plane_force_disable - Forcibly disable a plane
1449 * @plane: plane to disable
1451 * Forces the plane to be disabled.
1453 * Used when the plane's current framebuffer is destroyed,
1454 * and when restoring fbdev mode.
1456 void drm_plane_force_disable(struct drm_plane *plane)
1463 plane->old_fb = plane->fb;
1464 ret = plane->funcs->disable_plane(plane);
1466 DRM_ERROR("failed to disable plane with busy fb\n");
1467 plane->old_fb = NULL;
1470 /* disconnect the plane from the fb and crtc: */
1471 drm_framebuffer_unreference(plane->old_fb);
1472 plane->old_fb = NULL;
1476 EXPORT_SYMBOL(drm_plane_force_disable);
1478 static int drm_mode_create_standard_properties(struct drm_device *dev)
1480 struct drm_property *prop;
1483 * Standard properties (apply to all connectors)
1485 prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1486 DRM_MODE_PROP_IMMUTABLE,
1490 dev->mode_config.edid_property = prop;
1492 prop = drm_property_create_enum(dev, 0,
1493 "DPMS", drm_dpms_enum_list,
1494 ARRAY_SIZE(drm_dpms_enum_list));
1497 dev->mode_config.dpms_property = prop;
1499 prop = drm_property_create(dev,
1500 DRM_MODE_PROP_BLOB |
1501 DRM_MODE_PROP_IMMUTABLE,
1505 dev->mode_config.path_property = prop;
1507 prop = drm_property_create(dev,
1508 DRM_MODE_PROP_BLOB |
1509 DRM_MODE_PROP_IMMUTABLE,
1513 dev->mode_config.tile_property = prop;
1515 prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1516 "type", drm_plane_type_enum_list,
1517 ARRAY_SIZE(drm_plane_type_enum_list));
1520 dev->mode_config.plane_type_property = prop;
1522 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1523 "SRC_X", 0, UINT_MAX);
1526 dev->mode_config.prop_src_x = prop;
1528 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1529 "SRC_Y", 0, UINT_MAX);
1532 dev->mode_config.prop_src_y = prop;
1534 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1535 "SRC_W", 0, UINT_MAX);
1538 dev->mode_config.prop_src_w = prop;
1540 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1541 "SRC_H", 0, UINT_MAX);
1544 dev->mode_config.prop_src_h = prop;
1546 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1547 "CRTC_X", INT_MIN, INT_MAX);
1550 dev->mode_config.prop_crtc_x = prop;
1552 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1553 "CRTC_Y", INT_MIN, INT_MAX);
1556 dev->mode_config.prop_crtc_y = prop;
1558 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1559 "CRTC_W", 0, INT_MAX);
1562 dev->mode_config.prop_crtc_w = prop;
1564 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1565 "CRTC_H", 0, INT_MAX);
1568 dev->mode_config.prop_crtc_h = prop;
1570 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1571 "FB_ID", DRM_MODE_OBJECT_FB);
1574 dev->mode_config.prop_fb_id = prop;
1576 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1577 "CRTC_ID", DRM_MODE_OBJECT_CRTC);
1580 dev->mode_config.prop_crtc_id = prop;
1582 prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
1586 dev->mode_config.prop_active = prop;
1588 prop = drm_property_create(dev,
1589 DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB,
1593 dev->mode_config.prop_mode_id = prop;
1595 prop = drm_property_create(dev,
1600 dev->mode_config.degamma_lut_property = prop;
1602 prop = drm_property_create_range(dev,
1603 DRM_MODE_PROP_IMMUTABLE,
1604 "DEGAMMA_LUT_SIZE", 0, UINT_MAX);
1607 dev->mode_config.degamma_lut_size_property = prop;
1609 prop = drm_property_create(dev,
1614 dev->mode_config.ctm_property = prop;
1616 prop = drm_property_create(dev,
1621 dev->mode_config.gamma_lut_property = prop;
1623 prop = drm_property_create_range(dev,
1624 DRM_MODE_PROP_IMMUTABLE,
1625 "GAMMA_LUT_SIZE", 0, UINT_MAX);
1628 dev->mode_config.gamma_lut_size_property = prop;
1634 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1637 * Called by a driver the first time a DVI-I connector is made.
1639 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1641 struct drm_property *dvi_i_selector;
1642 struct drm_property *dvi_i_subconnector;
1644 if (dev->mode_config.dvi_i_select_subconnector_property)
1648 drm_property_create_enum(dev, 0,
1649 "select subconnector",
1650 drm_dvi_i_select_enum_list,
1651 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1652 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1654 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1656 drm_dvi_i_subconnector_enum_list,
1657 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1658 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1662 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1665 * drm_create_tv_properties - create TV specific connector properties
1667 * @num_modes: number of different TV formats (modes) supported
1668 * @modes: array of pointers to strings containing name of each format
1670 * Called by a driver's TV initialization routine, this function creates
1671 * the TV specific connector properties for a given device. Caller is
1672 * responsible for allocating a list of format names and passing them to
1675 int drm_mode_create_tv_properties(struct drm_device *dev,
1676 unsigned int num_modes,
1677 const char * const modes[])
1679 struct drm_property *tv_selector;
1680 struct drm_property *tv_subconnector;
1683 if (dev->mode_config.tv_select_subconnector_property)
1687 * Basic connector properties
1689 tv_selector = drm_property_create_enum(dev, 0,
1690 "select subconnector",
1691 drm_tv_select_enum_list,
1692 ARRAY_SIZE(drm_tv_select_enum_list));
1696 dev->mode_config.tv_select_subconnector_property = tv_selector;
1699 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1701 drm_tv_subconnector_enum_list,
1702 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1703 if (!tv_subconnector)
1705 dev->mode_config.tv_subconnector_property = tv_subconnector;
1708 * Other, TV specific properties: margins & TV modes.
1710 dev->mode_config.tv_left_margin_property =
1711 drm_property_create_range(dev, 0, "left margin", 0, 100);
1712 if (!dev->mode_config.tv_left_margin_property)
1715 dev->mode_config.tv_right_margin_property =
1716 drm_property_create_range(dev, 0, "right margin", 0, 100);
1717 if (!dev->mode_config.tv_right_margin_property)
1720 dev->mode_config.tv_top_margin_property =
1721 drm_property_create_range(dev, 0, "top margin", 0, 100);
1722 if (!dev->mode_config.tv_top_margin_property)
1725 dev->mode_config.tv_bottom_margin_property =
1726 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1727 if (!dev->mode_config.tv_bottom_margin_property)
1730 dev->mode_config.tv_mode_property =
1731 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1733 if (!dev->mode_config.tv_mode_property)
1736 for (i = 0; i < num_modes; i++)
1737 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1740 dev->mode_config.tv_brightness_property =
1741 drm_property_create_range(dev, 0, "brightness", 0, 100);
1742 if (!dev->mode_config.tv_brightness_property)
1745 dev->mode_config.tv_contrast_property =
1746 drm_property_create_range(dev, 0, "contrast", 0, 100);
1747 if (!dev->mode_config.tv_contrast_property)
1750 dev->mode_config.tv_flicker_reduction_property =
1751 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1752 if (!dev->mode_config.tv_flicker_reduction_property)
1755 dev->mode_config.tv_overscan_property =
1756 drm_property_create_range(dev, 0, "overscan", 0, 100);
1757 if (!dev->mode_config.tv_overscan_property)
1760 dev->mode_config.tv_saturation_property =
1761 drm_property_create_range(dev, 0, "saturation", 0, 100);
1762 if (!dev->mode_config.tv_saturation_property)
1765 dev->mode_config.tv_hue_property =
1766 drm_property_create_range(dev, 0, "hue", 0, 100);
1767 if (!dev->mode_config.tv_hue_property)
1774 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1777 * drm_mode_create_scaling_mode_property - create scaling mode property
1780 * Called by a driver the first time it's needed, must be attached to desired
1783 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1785 struct drm_property *scaling_mode;
1787 if (dev->mode_config.scaling_mode_property)
1791 drm_property_create_enum(dev, 0, "scaling mode",
1792 drm_scaling_mode_enum_list,
1793 ARRAY_SIZE(drm_scaling_mode_enum_list));
1795 dev->mode_config.scaling_mode_property = scaling_mode;
1799 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1802 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1805 * Called by a driver the first time it's needed, must be attached to desired
1809 * Zero on success, negative errno on failure.
1811 int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1813 if (dev->mode_config.aspect_ratio_property)
1816 dev->mode_config.aspect_ratio_property =
1817 drm_property_create_enum(dev, 0, "aspect ratio",
1818 drm_aspect_ratio_enum_list,
1819 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1821 if (dev->mode_config.aspect_ratio_property == NULL)
1826 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1829 * drm_mode_create_dirty_property - create dirty property
1832 * Called by a driver the first time it's needed, must be attached to desired
1835 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1837 struct drm_property *dirty_info;
1839 if (dev->mode_config.dirty_info_property)
1843 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1845 drm_dirty_info_enum_list,
1846 ARRAY_SIZE(drm_dirty_info_enum_list));
1847 dev->mode_config.dirty_info_property = dirty_info;
1851 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1854 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1857 * Create the the suggested x/y offset property for connectors.
1859 int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1861 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1864 dev->mode_config.suggested_x_property =
1865 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1867 dev->mode_config.suggested_y_property =
1868 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1870 if (dev->mode_config.suggested_x_property == NULL ||
1871 dev->mode_config.suggested_y_property == NULL)
1875 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1878 * drm_mode_getresources - get graphics configuration
1879 * @dev: drm device for the ioctl
1880 * @data: data pointer for the ioctl
1881 * @file_priv: drm file for the ioctl call
1883 * Construct a set of configuration description structures and return
1884 * them to the user, including CRTC, connector and framebuffer configuration.
1886 * Called by the user via ioctl.
1889 * Zero on success, negative errno on failure.
1891 int drm_mode_getresources(struct drm_device *dev, void *data,
1892 struct drm_file *file_priv)
1894 struct drm_mode_card_res *card_res = data;
1895 struct list_head *lh;
1896 struct drm_framebuffer *fb;
1897 struct drm_connector *connector;
1898 struct drm_crtc *crtc;
1899 struct drm_encoder *encoder;
1901 int connector_count = 0;
1904 int encoder_count = 0;
1906 uint32_t __user *fb_id;
1907 uint32_t __user *crtc_id;
1908 uint32_t __user *connector_id;
1909 uint32_t __user *encoder_id;
1911 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1915 mutex_lock(&file_priv->fbs_lock);
1917 * For the non-control nodes we need to limit the list of resources
1918 * by IDs in the group list for this node
1920 list_for_each(lh, &file_priv->fbs)
1923 /* handle this in 4 parts */
1925 if (card_res->count_fbs >= fb_count) {
1927 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1928 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1929 if (put_user(fb->base.id, fb_id + copied)) {
1930 mutex_unlock(&file_priv->fbs_lock);
1936 card_res->count_fbs = fb_count;
1937 mutex_unlock(&file_priv->fbs_lock);
1939 /* mode_config.mutex protects the connector list against e.g. DP MST
1940 * connector hot-adding. CRTC/Plane lists are invariant. */
1941 mutex_lock(&dev->mode_config.mutex);
1942 drm_for_each_crtc(crtc, dev)
1945 drm_for_each_connector(connector, dev)
1948 drm_for_each_encoder(encoder, dev)
1951 card_res->max_height = dev->mode_config.max_height;
1952 card_res->min_height = dev->mode_config.min_height;
1953 card_res->max_width = dev->mode_config.max_width;
1954 card_res->min_width = dev->mode_config.min_width;
1957 if (card_res->count_crtcs >= crtc_count) {
1959 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1960 drm_for_each_crtc(crtc, dev) {
1961 DRM_DEBUG_KMS("[CRTC:%d:%s]\n",
1962 crtc->base.id, crtc->name);
1963 if (put_user(crtc->base.id, crtc_id + copied)) {
1970 card_res->count_crtcs = crtc_count;
1973 if (card_res->count_encoders >= encoder_count) {
1975 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1976 drm_for_each_encoder(encoder, dev) {
1977 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1979 if (put_user(encoder->base.id, encoder_id +
1987 card_res->count_encoders = encoder_count;
1990 if (card_res->count_connectors >= connector_count) {
1992 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1993 drm_for_each_connector(connector, dev) {
1994 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1997 if (put_user(connector->base.id,
1998 connector_id + copied)) {
2005 card_res->count_connectors = connector_count;
2007 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
2008 card_res->count_connectors, card_res->count_encoders);
2011 mutex_unlock(&dev->mode_config.mutex);
2016 * drm_mode_getcrtc - get CRTC configuration
2017 * @dev: drm device for the ioctl
2018 * @data: data pointer for the ioctl
2019 * @file_priv: drm file for the ioctl call
2021 * Construct a CRTC configuration structure to return to the user.
2023 * Called by the user via ioctl.
2026 * Zero on success, negative errno on failure.
2028 int drm_mode_getcrtc(struct drm_device *dev,
2029 void *data, struct drm_file *file_priv)
2031 struct drm_mode_crtc *crtc_resp = data;
2032 struct drm_crtc *crtc;
2034 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2037 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
2041 drm_modeset_lock_crtc(crtc, crtc->primary);
2042 crtc_resp->gamma_size = crtc->gamma_size;
2043 if (crtc->primary->fb)
2044 crtc_resp->fb_id = crtc->primary->fb->base.id;
2046 crtc_resp->fb_id = 0;
2049 crtc_resp->x = crtc->primary->state->src_x >> 16;
2050 crtc_resp->y = crtc->primary->state->src_y >> 16;
2051 if (crtc->state->enable) {
2052 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode);
2053 crtc_resp->mode_valid = 1;
2056 crtc_resp->mode_valid = 0;
2059 crtc_resp->x = crtc->x;
2060 crtc_resp->y = crtc->y;
2061 if (crtc->enabled) {
2062 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode);
2063 crtc_resp->mode_valid = 1;
2066 crtc_resp->mode_valid = 0;
2069 drm_modeset_unlock_crtc(crtc);
2074 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
2075 const struct drm_file *file_priv)
2078 * If user-space hasn't configured the driver to expose the stereo 3D
2079 * modes, don't expose them.
2081 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
2087 static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
2089 /* For atomic drivers only state objects are synchronously updated and
2090 * protected by modeset locks, so check those first. */
2091 if (connector->state)
2092 return connector->state->best_encoder;
2093 return connector->encoder;
2096 /* helper for getconnector and getproperties ioctls */
2097 static int get_properties(struct drm_mode_object *obj, bool atomic,
2098 uint32_t __user *prop_ptr, uint64_t __user *prop_values,
2099 uint32_t *arg_count_props)
2104 props_count = obj->properties->count;
2106 props_count -= obj->properties->atomic_count;
2108 if ((*arg_count_props >= props_count) && props_count) {
2109 for (i = 0, copied = 0; copied < props_count; i++) {
2110 struct drm_property *prop = obj->properties->properties[i];
2113 if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
2116 ret = drm_object_property_get_value(obj, prop, &val);
2120 if (put_user(prop->base.id, prop_ptr + copied))
2123 if (put_user(val, prop_values + copied))
2129 *arg_count_props = props_count;
2135 * drm_mode_getconnector - get connector configuration
2136 * @dev: drm device for the ioctl
2137 * @data: data pointer for the ioctl
2138 * @file_priv: drm file for the ioctl call
2140 * Construct a connector configuration structure to return to the user.
2142 * Called by the user via ioctl.
2145 * Zero on success, negative errno on failure.
2147 int drm_mode_getconnector(struct drm_device *dev, void *data,
2148 struct drm_file *file_priv)
2150 struct drm_mode_get_connector *out_resp = data;
2151 struct drm_connector *connector;
2152 struct drm_encoder *encoder;
2153 struct drm_display_mode *mode;
2155 int encoders_count = 0;
2159 struct drm_mode_modeinfo u_mode;
2160 struct drm_mode_modeinfo __user *mode_ptr;
2161 uint32_t __user *encoder_ptr;
2163 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2166 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
2168 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
2170 mutex_lock(&dev->mode_config.mutex);
2172 connector = drm_connector_find(dev, out_resp->connector_id);
2178 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
2179 if (connector->encoder_ids[i] != 0)
2182 if (out_resp->count_modes == 0) {
2183 connector->funcs->fill_modes(connector,
2184 dev->mode_config.max_width,
2185 dev->mode_config.max_height);
2188 /* delayed so we get modes regardless of pre-fill_modes state */
2189 list_for_each_entry(mode, &connector->modes, head)
2190 if (drm_mode_expose_to_userspace(mode, file_priv))
2193 out_resp->connector_id = connector->base.id;
2194 out_resp->connector_type = connector->connector_type;
2195 out_resp->connector_type_id = connector->connector_type_id;
2196 out_resp->mm_width = connector->display_info.width_mm;
2197 out_resp->mm_height = connector->display_info.height_mm;
2198 out_resp->subpixel = connector->display_info.subpixel_order;
2199 out_resp->connection = connector->status;
2201 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2202 encoder = drm_connector_get_encoder(connector);
2204 out_resp->encoder_id = encoder->base.id;
2206 out_resp->encoder_id = 0;
2209 * This ioctl is called twice, once to determine how much space is
2210 * needed, and the 2nd time to fill it.
2212 if ((out_resp->count_modes >= mode_count) && mode_count) {
2214 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
2215 list_for_each_entry(mode, &connector->modes, head) {
2216 if (!drm_mode_expose_to_userspace(mode, file_priv))
2219 drm_mode_convert_to_umode(&u_mode, mode);
2220 if (copy_to_user(mode_ptr + copied,
2221 &u_mode, sizeof(u_mode))) {
2228 out_resp->count_modes = mode_count;
2230 ret = get_properties(&connector->base, file_priv->atomic,
2231 (uint32_t __user *)(unsigned long)(out_resp->props_ptr),
2232 (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr),
2233 &out_resp->count_props);
2237 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2239 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
2240 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2241 if (connector->encoder_ids[i] != 0) {
2242 if (put_user(connector->encoder_ids[i],
2243 encoder_ptr + copied)) {
2251 out_resp->count_encoders = encoders_count;
2254 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2257 mutex_unlock(&dev->mode_config.mutex);
2262 static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2264 struct drm_connector *connector;
2265 struct drm_device *dev = encoder->dev;
2266 bool uses_atomic = false;
2268 /* For atomic drivers only state objects are synchronously updated and
2269 * protected by modeset locks, so check those first. */
2270 drm_for_each_connector(connector, dev) {
2271 if (!connector->state)
2276 if (connector->state->best_encoder != encoder)
2279 return connector->state->crtc;
2282 /* Don't return stale data (e.g. pending async disable). */
2286 return encoder->crtc;
2290 * drm_mode_getencoder - get encoder configuration
2291 * @dev: drm device for the ioctl
2292 * @data: data pointer for the ioctl
2293 * @file_priv: drm file for the ioctl call
2295 * Construct a encoder configuration structure to return to the user.
2297 * Called by the user via ioctl.
2300 * Zero on success, negative errno on failure.
2302 int drm_mode_getencoder(struct drm_device *dev, void *data,
2303 struct drm_file *file_priv)
2305 struct drm_mode_get_encoder *enc_resp = data;
2306 struct drm_encoder *encoder;
2307 struct drm_crtc *crtc;
2309 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2312 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
2316 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2317 crtc = drm_encoder_get_crtc(encoder);
2319 enc_resp->crtc_id = crtc->base.id;
2321 enc_resp->crtc_id = 0;
2322 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2324 enc_resp->encoder_type = encoder->encoder_type;
2325 enc_resp->encoder_id = encoder->base.id;
2326 enc_resp->possible_crtcs = encoder->possible_crtcs;
2327 enc_resp->possible_clones = encoder->possible_clones;
2333 * drm_mode_getplane_res - enumerate all plane resources
2336 * @file_priv: DRM file info
2338 * Construct a list of plane ids to return to the user.
2340 * Called by the user via ioctl.
2343 * Zero on success, negative errno on failure.
2345 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2346 struct drm_file *file_priv)
2348 struct drm_mode_get_plane_res *plane_resp = data;
2349 struct drm_mode_config *config;
2350 struct drm_plane *plane;
2351 uint32_t __user *plane_ptr;
2353 unsigned num_planes;
2355 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2358 config = &dev->mode_config;
2360 if (file_priv->universal_planes)
2361 num_planes = config->num_total_plane;
2363 num_planes = config->num_overlay_plane;
2366 * This ioctl is called twice, once to determine how much space is
2367 * needed, and the 2nd time to fill it.
2370 (plane_resp->count_planes >= num_planes)) {
2371 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2373 /* Plane lists are invariant, no locking needed. */
2374 drm_for_each_plane(plane, dev) {
2376 * Unless userspace set the 'universal planes'
2377 * capability bit, only advertise overlays.
2379 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2380 !file_priv->universal_planes)
2383 if (put_user(plane->base.id, plane_ptr + copied))
2388 plane_resp->count_planes = num_planes;
2394 * drm_mode_getplane - get plane configuration
2397 * @file_priv: DRM file info
2399 * Construct a plane configuration structure to return to the user.
2401 * Called by the user via ioctl.
2404 * Zero on success, negative errno on failure.
2406 int drm_mode_getplane(struct drm_device *dev, void *data,
2407 struct drm_file *file_priv)
2409 struct drm_mode_get_plane *plane_resp = data;
2410 struct drm_plane *plane;
2411 uint32_t __user *format_ptr;
2413 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2416 plane = drm_plane_find(dev, plane_resp->plane_id);
2420 drm_modeset_lock(&plane->mutex, NULL);
2422 plane_resp->crtc_id = plane->crtc->base.id;
2424 plane_resp->crtc_id = 0;
2427 plane_resp->fb_id = plane->fb->base.id;
2429 plane_resp->fb_id = 0;
2430 drm_modeset_unlock(&plane->mutex);
2432 plane_resp->plane_id = plane->base.id;
2433 plane_resp->possible_crtcs = plane->possible_crtcs;
2434 plane_resp->gamma_size = 0;
2437 * This ioctl is called twice, once to determine how much space is
2438 * needed, and the 2nd time to fill it.
2440 if (plane->format_count &&
2441 (plane_resp->count_format_types >= plane->format_count)) {
2442 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2443 if (copy_to_user(format_ptr,
2444 plane->format_types,
2445 sizeof(uint32_t) * plane->format_count)) {
2449 plane_resp->count_format_types = plane->format_count;
2455 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2456 * @plane: plane to check for format support
2457 * @format: the pixel format
2460 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2463 int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format)
2467 for (i = 0; i < plane->format_count; i++) {
2468 if (format == plane->format_types[i])
2475 static int check_src_coords(uint32_t src_x, uint32_t src_y,
2476 uint32_t src_w, uint32_t src_h,
2477 const struct drm_framebuffer *fb)
2479 unsigned int fb_width, fb_height;
2481 fb_width = fb->width << 16;
2482 fb_height = fb->height << 16;
2484 /* Make sure source coordinates are inside the fb. */
2485 if (src_w > fb_width ||
2486 src_x > fb_width - src_w ||
2487 src_h > fb_height ||
2488 src_y > fb_height - src_h) {
2489 DRM_DEBUG_KMS("Invalid source coordinates "
2490 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2491 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2492 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2493 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2494 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2502 * setplane_internal - setplane handler for internal callers
2504 * Note that we assume an extra reference has already been taken on fb. If the
2505 * update fails, this reference will be dropped before return; if it succeeds,
2506 * the previous framebuffer (if any) will be unreferenced instead.
2508 * src_{x,y,w,h} are provided in 16.16 fixed point format
2510 static int __setplane_internal(struct drm_plane *plane,
2511 struct drm_crtc *crtc,
2512 struct drm_framebuffer *fb,
2513 int32_t crtc_x, int32_t crtc_y,
2514 uint32_t crtc_w, uint32_t crtc_h,
2515 /* src_{x,y,w,h} values are 16.16 fixed point */
2516 uint32_t src_x, uint32_t src_y,
2517 uint32_t src_w, uint32_t src_h)
2521 /* No fb means shut it down */
2523 plane->old_fb = plane->fb;
2524 ret = plane->funcs->disable_plane(plane);
2529 plane->old_fb = NULL;
2534 /* Check whether this plane is usable on this CRTC */
2535 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2536 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2541 /* Check whether this plane supports the fb pixel format. */
2542 ret = drm_plane_check_pixel_format(plane, fb->pixel_format);
2544 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2545 drm_get_format_name(fb->pixel_format));
2549 /* Give drivers some help against integer overflows */
2550 if (crtc_w > INT_MAX ||
2551 crtc_x > INT_MAX - (int32_t) crtc_w ||
2553 crtc_y > INT_MAX - (int32_t) crtc_h) {
2554 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2555 crtc_w, crtc_h, crtc_x, crtc_y);
2560 ret = check_src_coords(src_x, src_y, src_w, src_h, fb);
2564 plane->old_fb = plane->fb;
2565 ret = plane->funcs->update_plane(plane, crtc, fb,
2566 crtc_x, crtc_y, crtc_w, crtc_h,
2567 src_x, src_y, src_w, src_h);
2573 plane->old_fb = NULL;
2578 drm_framebuffer_unreference(fb);
2580 drm_framebuffer_unreference(plane->old_fb);
2581 plane->old_fb = NULL;
2586 static int setplane_internal(struct drm_plane *plane,
2587 struct drm_crtc *crtc,
2588 struct drm_framebuffer *fb,
2589 int32_t crtc_x, int32_t crtc_y,
2590 uint32_t crtc_w, uint32_t crtc_h,
2591 /* src_{x,y,w,h} values are 16.16 fixed point */
2592 uint32_t src_x, uint32_t src_y,
2593 uint32_t src_w, uint32_t src_h)
2597 drm_modeset_lock_all(plane->dev);
2598 ret = __setplane_internal(plane, crtc, fb,
2599 crtc_x, crtc_y, crtc_w, crtc_h,
2600 src_x, src_y, src_w, src_h);
2601 drm_modeset_unlock_all(plane->dev);
2607 * drm_mode_setplane - configure a plane's configuration
2609 * @data: ioctl data*
2610 * @file_priv: DRM file info
2612 * Set plane configuration, including placement, fb, scaling, and other factors.
2613 * Or pass a NULL fb to disable (planes may be disabled without providing a
2617 * Zero on success, negative errno on failure.
2619 int drm_mode_setplane(struct drm_device *dev, void *data,
2620 struct drm_file *file_priv)
2622 struct drm_mode_set_plane *plane_req = data;
2623 struct drm_plane *plane;
2624 struct drm_crtc *crtc = NULL;
2625 struct drm_framebuffer *fb = NULL;
2627 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2631 * First, find the plane, crtc, and fb objects. If not available,
2632 * we don't bother to call the driver.
2634 plane = drm_plane_find(dev, plane_req->plane_id);
2636 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2637 plane_req->plane_id);
2641 if (plane_req->fb_id) {
2642 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2644 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2649 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2651 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2652 plane_req->crtc_id);
2658 * setplane_internal will take care of deref'ing either the old or new
2659 * framebuffer depending on success.
2661 return setplane_internal(plane, crtc, fb,
2662 plane_req->crtc_x, plane_req->crtc_y,
2663 plane_req->crtc_w, plane_req->crtc_h,
2664 plane_req->src_x, plane_req->src_y,
2665 plane_req->src_w, plane_req->src_h);
2669 * drm_mode_set_config_internal - helper to call ->set_config
2670 * @set: modeset config to set
2672 * This is a little helper to wrap internal calls to the ->set_config driver
2673 * interface. The only thing it adds is correct refcounting dance.
2676 * Zero on success, negative errno on failure.
2678 int drm_mode_set_config_internal(struct drm_mode_set *set)
2680 struct drm_crtc *crtc = set->crtc;
2681 struct drm_framebuffer *fb;
2682 struct drm_crtc *tmp;
2686 * NOTE: ->set_config can also disable other crtcs (if we steal all
2687 * connectors from it), hence we need to refcount the fbs across all
2688 * crtcs. Atomic modeset will have saner semantics ...
2690 drm_for_each_crtc(tmp, crtc->dev)
2691 tmp->primary->old_fb = tmp->primary->fb;
2695 ret = crtc->funcs->set_config(set);
2697 crtc->primary->crtc = crtc;
2698 crtc->primary->fb = fb;
2701 drm_for_each_crtc(tmp, crtc->dev) {
2702 if (tmp->primary->fb)
2703 drm_framebuffer_reference(tmp->primary->fb);
2704 if (tmp->primary->old_fb)
2705 drm_framebuffer_unreference(tmp->primary->old_fb);
2706 tmp->primary->old_fb = NULL;
2711 EXPORT_SYMBOL(drm_mode_set_config_internal);
2714 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2715 * @mode: mode to query
2716 * @hdisplay: hdisplay value to fill in
2717 * @vdisplay: vdisplay value to fill in
2719 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2720 * the appropriate layout.
2722 void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
2723 int *hdisplay, int *vdisplay)
2725 struct drm_display_mode adjusted;
2727 drm_mode_copy(&adjusted, mode);
2728 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
2729 *hdisplay = adjusted.crtc_hdisplay;
2730 *vdisplay = adjusted.crtc_vdisplay;
2732 EXPORT_SYMBOL(drm_crtc_get_hv_timing);
2735 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2737 * @crtc: CRTC that framebuffer will be displayed on
2740 * @mode: mode that framebuffer will be displayed under
2741 * @fb: framebuffer to check size of
2743 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2745 const struct drm_display_mode *mode,
2746 const struct drm_framebuffer *fb)
2749 int hdisplay, vdisplay;
2751 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
2754 crtc->primary->state->rotation & (BIT(DRM_ROTATE_90) |
2755 BIT(DRM_ROTATE_270)))
2756 swap(hdisplay, vdisplay);
2758 return check_src_coords(x << 16, y << 16,
2759 hdisplay << 16, vdisplay << 16, fb);
2761 EXPORT_SYMBOL(drm_crtc_check_viewport);
2764 * drm_mode_setcrtc - set CRTC configuration
2765 * @dev: drm device for the ioctl
2766 * @data: data pointer for the ioctl
2767 * @file_priv: drm file for the ioctl call
2769 * Build a new CRTC configuration based on user request.
2771 * Called by the user via ioctl.
2774 * Zero on success, negative errno on failure.
2776 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2777 struct drm_file *file_priv)
2779 struct drm_mode_config *config = &dev->mode_config;
2780 struct drm_mode_crtc *crtc_req = data;
2781 struct drm_crtc *crtc;
2782 struct drm_connector **connector_set = NULL, *connector;
2783 struct drm_framebuffer *fb = NULL;
2784 struct drm_display_mode *mode = NULL;
2785 struct drm_mode_set set;
2786 uint32_t __user *set_connectors_ptr;
2790 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2794 * Universal plane src offsets are only 16.16, prevent havoc for
2795 * drivers using universal plane code internally.
2797 if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000)
2800 drm_modeset_lock_all(dev);
2801 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2803 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2807 DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name);
2809 if (crtc_req->mode_valid) {
2810 /* If we have a mode we need a framebuffer. */
2811 /* If we pass -1, set the mode with the currently bound fb */
2812 if (crtc_req->fb_id == -1) {
2813 if (!crtc->primary->fb) {
2814 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2818 fb = crtc->primary->fb;
2819 /* Make refcounting symmetric with the lookup path. */
2820 drm_framebuffer_reference(fb);
2822 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2824 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2831 mode = drm_mode_create(dev);
2837 ret = drm_mode_convert_umode(mode, &crtc_req->mode);
2839 DRM_DEBUG_KMS("Invalid mode\n");
2843 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2846 * Check whether the primary plane supports the fb pixel format.
2847 * Drivers not implementing the universal planes API use a
2848 * default formats list provided by the DRM core which doesn't
2849 * match real hardware capabilities. Skip the check in that
2852 if (!crtc->primary->format_default) {
2853 ret = drm_plane_check_pixel_format(crtc->primary,
2856 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2857 drm_get_format_name(fb->pixel_format));
2862 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2869 if (crtc_req->count_connectors == 0 && mode) {
2870 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2875 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2876 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2877 crtc_req->count_connectors);
2882 if (crtc_req->count_connectors > 0) {
2885 /* Avoid unbounded kernel memory allocation */
2886 if (crtc_req->count_connectors > config->num_connector) {
2891 connector_set = kmalloc_array(crtc_req->count_connectors,
2892 sizeof(struct drm_connector *),
2894 if (!connector_set) {
2899 for (i = 0; i < crtc_req->count_connectors; i++) {
2900 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2901 if (get_user(out_id, &set_connectors_ptr[i])) {
2906 connector = drm_connector_find(dev, out_id);
2908 DRM_DEBUG_KMS("Connector id %d unknown\n",
2913 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2917 connector_set[i] = connector;
2922 set.x = crtc_req->x;
2923 set.y = crtc_req->y;
2925 set.connectors = connector_set;
2926 set.num_connectors = crtc_req->count_connectors;
2928 ret = drm_mode_set_config_internal(&set);
2932 drm_framebuffer_unreference(fb);
2934 kfree(connector_set);
2935 drm_mode_destroy(dev, mode);
2936 drm_modeset_unlock_all(dev);
2941 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2942 * universal plane handler call
2943 * @crtc: crtc to update cursor for
2944 * @req: data pointer for the ioctl
2945 * @file_priv: drm file for the ioctl call
2947 * Legacy cursor ioctl's work directly with driver buffer handles. To
2948 * translate legacy ioctl calls into universal plane handler calls, we need to
2949 * wrap the native buffer handle in a drm_framebuffer.
2951 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2952 * buffer with a pitch of 4*width; the universal plane interface should be used
2953 * directly in cases where the hardware can support other buffer settings and
2954 * userspace wants to make use of these capabilities.
2957 * Zero on success, negative errno on failure.
2959 static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2960 struct drm_mode_cursor2 *req,
2961 struct drm_file *file_priv)
2963 struct drm_device *dev = crtc->dev;
2964 struct drm_framebuffer *fb = NULL;
2965 struct drm_mode_fb_cmd2 fbreq = {
2966 .width = req->width,
2967 .height = req->height,
2968 .pixel_format = DRM_FORMAT_ARGB8888,
2969 .pitches = { req->width * 4 },
2970 .handles = { req->handle },
2972 int32_t crtc_x, crtc_y;
2973 uint32_t crtc_w = 0, crtc_h = 0;
2974 uint32_t src_w = 0, src_h = 0;
2977 BUG_ON(!crtc->cursor);
2978 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
2981 * Obtain fb we'll be using (either new or existing) and take an extra
2982 * reference to it if fb != null. setplane will take care of dropping
2983 * the reference if the plane update fails.
2985 if (req->flags & DRM_MODE_CURSOR_BO) {
2987 fb = internal_framebuffer_create(dev, &fbreq, file_priv);
2989 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2996 fb = crtc->cursor->fb;
2998 drm_framebuffer_reference(fb);
3001 if (req->flags & DRM_MODE_CURSOR_MOVE) {
3005 crtc_x = crtc->cursor_x;
3006 crtc_y = crtc->cursor_y;
3011 crtc_h = fb->height;
3012 src_w = fb->width << 16;
3013 src_h = fb->height << 16;
3017 * setplane_internal will take care of deref'ing either the old or new
3018 * framebuffer depending on success.
3020 ret = __setplane_internal(crtc->cursor, crtc, fb,
3021 crtc_x, crtc_y, crtc_w, crtc_h,
3022 0, 0, src_w, src_h);
3024 /* Update successful; save new cursor position, if necessary */
3025 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
3026 crtc->cursor_x = req->x;
3027 crtc->cursor_y = req->y;
3033 static int drm_mode_cursor_common(struct drm_device *dev,
3034 struct drm_mode_cursor2 *req,
3035 struct drm_file *file_priv)
3037 struct drm_crtc *crtc;
3040 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3043 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
3046 crtc = drm_crtc_find(dev, req->crtc_id);
3048 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
3053 * If this crtc has a universal cursor plane, call that plane's update
3054 * handler rather than using legacy cursor handlers.
3056 drm_modeset_lock_crtc(crtc, crtc->cursor);
3058 ret = drm_mode_cursor_universal(crtc, req, file_priv);
3062 if (req->flags & DRM_MODE_CURSOR_BO) {
3063 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
3067 /* Turns off the cursor if handle is 0 */
3068 if (crtc->funcs->cursor_set2)
3069 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
3070 req->width, req->height, req->hot_x, req->hot_y);
3072 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
3073 req->width, req->height);
3076 if (req->flags & DRM_MODE_CURSOR_MOVE) {
3077 if (crtc->funcs->cursor_move) {
3078 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
3085 drm_modeset_unlock_crtc(crtc);
3093 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
3094 * @dev: drm device for the ioctl
3095 * @data: data pointer for the ioctl
3096 * @file_priv: drm file for the ioctl call
3098 * Set the cursor configuration based on user request.
3100 * Called by the user via ioctl.
3103 * Zero on success, negative errno on failure.
3105 int drm_mode_cursor_ioctl(struct drm_device *dev,
3106 void *data, struct drm_file *file_priv)
3108 struct drm_mode_cursor *req = data;
3109 struct drm_mode_cursor2 new_req;
3111 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
3112 new_req.hot_x = new_req.hot_y = 0;
3114 return drm_mode_cursor_common(dev, &new_req, file_priv);
3118 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3119 * @dev: drm device for the ioctl
3120 * @data: data pointer for the ioctl
3121 * @file_priv: drm file for the ioctl call
3123 * Set the cursor configuration based on user request. This implements the 2nd
3124 * version of the cursor ioctl, which allows userspace to additionally specify
3125 * the hotspot of the pointer.
3127 * Called by the user via ioctl.
3130 * Zero on success, negative errno on failure.
3132 int drm_mode_cursor2_ioctl(struct drm_device *dev,
3133 void *data, struct drm_file *file_priv)
3135 struct drm_mode_cursor2 *req = data;
3137 return drm_mode_cursor_common(dev, req, file_priv);
3141 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3142 * @bpp: bits per pixels
3143 * @depth: bit depth per pixel
3145 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3146 * Useful in fbdev emulation code, since that deals in those values.
3148 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
3154 fmt = DRM_FORMAT_C8;
3158 fmt = DRM_FORMAT_XRGB1555;
3160 fmt = DRM_FORMAT_RGB565;
3163 fmt = DRM_FORMAT_RGB888;
3167 fmt = DRM_FORMAT_XRGB8888;
3168 else if (depth == 30)
3169 fmt = DRM_FORMAT_XRGB2101010;
3171 fmt = DRM_FORMAT_ARGB8888;
3174 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3175 fmt = DRM_FORMAT_XRGB8888;
3181 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3184 * drm_mode_addfb - add an FB to the graphics configuration
3185 * @dev: drm device for the ioctl
3186 * @data: data pointer for the ioctl
3187 * @file_priv: drm file for the ioctl call
3189 * Add a new FB to the specified CRTC, given a user request. This is the
3190 * original addfb ioctl which only supported RGB formats.
3192 * Called by the user via ioctl.
3195 * Zero on success, negative errno on failure.
3197 int drm_mode_addfb(struct drm_device *dev,
3198 void *data, struct drm_file *file_priv)
3200 struct drm_mode_fb_cmd *or = data;
3201 struct drm_mode_fb_cmd2 r = {};
3204 /* convert to new format and call new ioctl */
3205 r.fb_id = or->fb_id;
3206 r.width = or->width;
3207 r.height = or->height;
3208 r.pitches[0] = or->pitch;
3209 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3210 r.handles[0] = or->handle;
3212 ret = drm_mode_addfb2(dev, &r, file_priv);
3216 or->fb_id = r.fb_id;
3221 static int format_check(const struct drm_mode_fb_cmd2 *r)
3223 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3227 case DRM_FORMAT_RGB332:
3228 case DRM_FORMAT_BGR233:
3229 case DRM_FORMAT_XRGB4444:
3230 case DRM_FORMAT_XBGR4444:
3231 case DRM_FORMAT_RGBX4444:
3232 case DRM_FORMAT_BGRX4444:
3233 case DRM_FORMAT_ARGB4444:
3234 case DRM_FORMAT_ABGR4444:
3235 case DRM_FORMAT_RGBA4444:
3236 case DRM_FORMAT_BGRA4444:
3237 case DRM_FORMAT_XRGB1555:
3238 case DRM_FORMAT_XBGR1555:
3239 case DRM_FORMAT_RGBX5551:
3240 case DRM_FORMAT_BGRX5551:
3241 case DRM_FORMAT_ARGB1555:
3242 case DRM_FORMAT_ABGR1555:
3243 case DRM_FORMAT_RGBA5551:
3244 case DRM_FORMAT_BGRA5551:
3245 case DRM_FORMAT_RGB565:
3246 case DRM_FORMAT_BGR565:
3247 case DRM_FORMAT_RGB888:
3248 case DRM_FORMAT_BGR888:
3249 case DRM_FORMAT_XRGB8888:
3250 case DRM_FORMAT_XBGR8888:
3251 case DRM_FORMAT_RGBX8888:
3252 case DRM_FORMAT_BGRX8888:
3253 case DRM_FORMAT_ARGB8888:
3254 case DRM_FORMAT_ABGR8888:
3255 case DRM_FORMAT_RGBA8888:
3256 case DRM_FORMAT_BGRA8888:
3257 case DRM_FORMAT_XRGB2101010:
3258 case DRM_FORMAT_XBGR2101010:
3259 case DRM_FORMAT_RGBX1010102:
3260 case DRM_FORMAT_BGRX1010102:
3261 case DRM_FORMAT_ARGB2101010:
3262 case DRM_FORMAT_ABGR2101010:
3263 case DRM_FORMAT_RGBA1010102:
3264 case DRM_FORMAT_BGRA1010102:
3265 case DRM_FORMAT_YUYV:
3266 case DRM_FORMAT_YVYU:
3267 case DRM_FORMAT_UYVY:
3268 case DRM_FORMAT_VYUY:
3269 case DRM_FORMAT_AYUV:
3270 case DRM_FORMAT_NV12:
3271 case DRM_FORMAT_NV21:
3272 case DRM_FORMAT_NV16:
3273 case DRM_FORMAT_NV61:
3274 case DRM_FORMAT_NV24:
3275 case DRM_FORMAT_NV42:
3276 case DRM_FORMAT_YUV410:
3277 case DRM_FORMAT_YVU410:
3278 case DRM_FORMAT_YUV411:
3279 case DRM_FORMAT_YVU411:
3280 case DRM_FORMAT_YUV420:
3281 case DRM_FORMAT_YVU420:
3282 case DRM_FORMAT_YUV422:
3283 case DRM_FORMAT_YVU422:
3284 case DRM_FORMAT_YUV444:
3285 case DRM_FORMAT_YVU444:
3288 DRM_DEBUG_KMS("invalid pixel format %s\n",
3289 drm_get_format_name(r->pixel_format));
3294 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
3296 int ret, hsub, vsub, num_planes, i;
3298 ret = format_check(r);
3300 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3301 drm_get_format_name(r->pixel_format));
3305 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3306 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3307 num_planes = drm_format_num_planes(r->pixel_format);
3309 if (r->width == 0 || r->width % hsub) {
3310 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
3314 if (r->height == 0 || r->height % vsub) {
3315 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
3319 for (i = 0; i < num_planes; i++) {
3320 unsigned int width = r->width / (i != 0 ? hsub : 1);
3321 unsigned int height = r->height / (i != 0 ? vsub : 1);
3322 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
3324 if (!r->handles[i]) {
3325 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
3329 if ((uint64_t) width * cpp > UINT_MAX)
3332 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3335 if (r->pitches[i] < width * cpp) {
3336 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
3340 if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
3341 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3346 /* modifier specific checks: */
3347 switch (r->modifier[i]) {
3348 case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE:
3349 /* NOTE: the pitch restriction may be lifted later if it turns
3350 * out that no hw has this restriction:
3352 if (r->pixel_format != DRM_FORMAT_NV12 ||
3353 width % 128 || height % 32 ||
3354 r->pitches[i] % 128) {
3355 DRM_DEBUG_KMS("bad modifier data for plane %d\n", i);
3365 for (i = num_planes; i < 4; i++) {
3366 if (r->modifier[i]) {
3367 DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i);
3371 /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
3372 if (!(r->flags & DRM_MODE_FB_MODIFIERS))
3375 if (r->handles[i]) {
3376 DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i);
3380 if (r->pitches[i]) {
3381 DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i);
3385 if (r->offsets[i]) {
3386 DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i);
3394 static struct drm_framebuffer *
3395 internal_framebuffer_create(struct drm_device *dev,
3396 const struct drm_mode_fb_cmd2 *r,
3397 struct drm_file *file_priv)
3399 struct drm_mode_config *config = &dev->mode_config;
3400 struct drm_framebuffer *fb;
3403 if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
3404 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
3405 return ERR_PTR(-EINVAL);
3408 if ((config->min_width > r->width) || (r->width > config->max_width)) {
3409 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3410 r->width, config->min_width, config->max_width);
3411 return ERR_PTR(-EINVAL);
3413 if ((config->min_height > r->height) || (r->height > config->max_height)) {
3414 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3415 r->height, config->min_height, config->max_height);
3416 return ERR_PTR(-EINVAL);
3419 if (r->flags & DRM_MODE_FB_MODIFIERS &&
3420 !dev->mode_config.allow_fb_modifiers) {
3421 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3422 return ERR_PTR(-EINVAL);
3425 ret = framebuffer_check(r);
3427 return ERR_PTR(ret);
3429 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
3431 DRM_DEBUG_KMS("could not create framebuffer\n");
3439 * drm_mode_addfb2 - add an FB to the graphics configuration
3440 * @dev: drm device for the ioctl
3441 * @data: data pointer for the ioctl
3442 * @file_priv: drm file for the ioctl call
3444 * Add a new FB to the specified CRTC, given a user request with format. This is
3445 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3446 * and uses fourcc codes as pixel format specifiers.
3448 * Called by the user via ioctl.
3451 * Zero on success, negative errno on failure.
3453 int drm_mode_addfb2(struct drm_device *dev,
3454 void *data, struct drm_file *file_priv)
3456 struct drm_mode_fb_cmd2 *r = data;
3457 struct drm_framebuffer *fb;
3459 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3462 fb = internal_framebuffer_create(dev, r, file_priv);
3466 /* Transfer ownership to the filp for reaping on close */
3468 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3469 mutex_lock(&file_priv->fbs_lock);
3470 r->fb_id = fb->base.id;
3471 list_add(&fb->filp_head, &file_priv->fbs);
3472 mutex_unlock(&file_priv->fbs_lock);
3478 * drm_mode_rmfb - remove an FB from the configuration
3479 * @dev: drm device for the ioctl
3480 * @data: data pointer for the ioctl
3481 * @file_priv: drm file for the ioctl call
3483 * Remove the FB specified by the user.
3485 * Called by the user via ioctl.
3488 * Zero on success, negative errno on failure.
3490 int drm_mode_rmfb(struct drm_device *dev,
3491 void *data, struct drm_file *file_priv)
3493 struct drm_framebuffer *fb = NULL;
3494 struct drm_framebuffer *fbl = NULL;
3495 uint32_t *id = data;
3498 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3501 mutex_lock(&file_priv->fbs_lock);
3502 mutex_lock(&dev->mode_config.fb_lock);
3503 fb = __drm_framebuffer_lookup(dev, *id);
3507 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3513 list_del_init(&fb->filp_head);
3514 mutex_unlock(&dev->mode_config.fb_lock);
3515 mutex_unlock(&file_priv->fbs_lock);
3517 drm_framebuffer_unreference(fb);
3522 mutex_unlock(&dev->mode_config.fb_lock);
3523 mutex_unlock(&file_priv->fbs_lock);
3529 * drm_mode_getfb - get FB info
3530 * @dev: drm device for the ioctl
3531 * @data: data pointer for the ioctl
3532 * @file_priv: drm file for the ioctl call
3534 * Lookup the FB given its ID and return info about it.
3536 * Called by the user via ioctl.
3539 * Zero on success, negative errno on failure.
3541 int drm_mode_getfb(struct drm_device *dev,
3542 void *data, struct drm_file *file_priv)
3544 struct drm_mode_fb_cmd *r = data;
3545 struct drm_framebuffer *fb;
3548 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3551 fb = drm_framebuffer_lookup(dev, r->fb_id);
3555 r->height = fb->height;
3556 r->width = fb->width;
3557 r->depth = fb->depth;
3558 r->bpp = fb->bits_per_pixel;
3559 r->pitch = fb->pitches[0];
3560 if (fb->funcs->create_handle) {
3561 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
3562 drm_is_control_client(file_priv)) {
3563 ret = fb->funcs->create_handle(fb, file_priv,
3566 /* GET_FB() is an unprivileged ioctl so we must not
3567 * return a buffer-handle to non-master processes! For
3568 * backwards-compatibility reasons, we cannot make
3569 * GET_FB() privileged, so just return an invalid handle
3570 * for non-masters. */
3578 drm_framebuffer_unreference(fb);
3584 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3585 * @dev: drm device for the ioctl
3586 * @data: data pointer for the ioctl
3587 * @file_priv: drm file for the ioctl call
3589 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3590 * rectangle list. Generic userspace which does frontbuffer rendering must call
3591 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3592 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3594 * Modesetting drivers which always update the frontbuffer do not need to
3595 * implement the corresponding ->dirty framebuffer callback.
3597 * Called by the user via ioctl.
3600 * Zero on success, negative errno on failure.
3602 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3603 void *data, struct drm_file *file_priv)
3605 struct drm_clip_rect __user *clips_ptr;
3606 struct drm_clip_rect *clips = NULL;
3607 struct drm_mode_fb_dirty_cmd *r = data;
3608 struct drm_framebuffer *fb;
3613 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3616 fb = drm_framebuffer_lookup(dev, r->fb_id);
3620 num_clips = r->num_clips;
3621 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3623 if (!num_clips != !clips_ptr) {
3628 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3630 /* If userspace annotates copy, clips must come in pairs */
3631 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3636 if (num_clips && clips_ptr) {
3637 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3641 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
3647 ret = copy_from_user(clips, clips_ptr,
3648 num_clips * sizeof(*clips));
3655 if (fb->funcs->dirty) {
3656 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3665 drm_framebuffer_unreference(fb);
3672 * drm_fb_release - remove and free the FBs on this file
3673 * @priv: drm file for the ioctl
3675 * Destroy all the FBs associated with @filp.
3677 * Called by the user via ioctl.
3680 * Zero on success, negative errno on failure.
3682 void drm_fb_release(struct drm_file *priv)
3684 struct drm_framebuffer *fb, *tfb;
3687 * When the file gets released that means no one else can access the fb
3688 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3689 * avoid upsetting lockdep since the universal cursor code adds a
3690 * framebuffer while holding mutex locks.
3692 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3693 * locks is impossible here since no one else but this function can get
3696 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3697 list_del_init(&fb->filp_head);
3699 /* This drops the fpriv->fbs reference. */
3700 drm_framebuffer_unreference(fb);
3705 * drm_property_create - create a new property type
3707 * @flags: flags specifying the property type
3708 * @name: name of the property
3709 * @num_values: number of pre-defined values
3711 * This creates a new generic drm property which can then be attached to a drm
3712 * object with drm_object_attach_property. The returned property object must be
3713 * freed with drm_property_destroy.
3715 * Note that the DRM core keeps a per-device list of properties and that, if
3716 * drm_mode_config_cleanup() is called, it will destroy all properties created
3720 * A pointer to the newly created property on success, NULL on failure.
3722 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3723 const char *name, int num_values)
3725 struct drm_property *property = NULL;
3728 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3732 property->dev = dev;
3735 property->values = kcalloc(num_values, sizeof(uint64_t),
3737 if (!property->values)
3741 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3745 property->flags = flags;
3746 property->num_values = num_values;
3747 INIT_LIST_HEAD(&property->enum_list);
3750 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3751 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3754 list_add_tail(&property->head, &dev->mode_config.property_list);
3756 WARN_ON(!drm_property_type_valid(property));
3760 kfree(property->values);
3764 EXPORT_SYMBOL(drm_property_create);
3767 * drm_property_create_enum - create a new enumeration property type
3769 * @flags: flags specifying the property type
3770 * @name: name of the property
3771 * @props: enumeration lists with property values
3772 * @num_values: number of pre-defined values
3774 * This creates a new generic drm property which can then be attached to a drm
3775 * object with drm_object_attach_property. The returned property object must be
3776 * freed with drm_property_destroy.
3778 * Userspace is only allowed to set one of the predefined values for enumeration
3782 * A pointer to the newly created property on success, NULL on failure.
3784 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3786 const struct drm_prop_enum_list *props,
3789 struct drm_property *property;
3792 flags |= DRM_MODE_PROP_ENUM;
3794 property = drm_property_create(dev, flags, name, num_values);
3798 for (i = 0; i < num_values; i++) {
3799 ret = drm_property_add_enum(property, i,
3803 drm_property_destroy(dev, property);
3810 EXPORT_SYMBOL(drm_property_create_enum);
3813 * drm_property_create_bitmask - create a new bitmask property type
3815 * @flags: flags specifying the property type
3816 * @name: name of the property
3817 * @props: enumeration lists with property bitflags
3818 * @num_props: size of the @props array
3819 * @supported_bits: bitmask of all supported enumeration values
3821 * This creates a new bitmask drm property which can then be attached to a drm
3822 * object with drm_object_attach_property. The returned property object must be
3823 * freed with drm_property_destroy.
3825 * Compared to plain enumeration properties userspace is allowed to set any
3826 * or'ed together combination of the predefined property bitflag values
3829 * A pointer to the newly created property on success, NULL on failure.
3831 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3832 int flags, const char *name,
3833 const struct drm_prop_enum_list *props,
3835 uint64_t supported_bits)
3837 struct drm_property *property;
3838 int i, ret, index = 0;
3839 int num_values = hweight64(supported_bits);
3841 flags |= DRM_MODE_PROP_BITMASK;
3843 property = drm_property_create(dev, flags, name, num_values);
3846 for (i = 0; i < num_props; i++) {
3847 if (!(supported_bits & (1ULL << props[i].type)))
3850 if (WARN_ON(index >= num_values)) {
3851 drm_property_destroy(dev, property);
3855 ret = drm_property_add_enum(property, index++,
3859 drm_property_destroy(dev, property);
3866 EXPORT_SYMBOL(drm_property_create_bitmask);
3868 static struct drm_property *property_create_range(struct drm_device *dev,
3869 int flags, const char *name,
3870 uint64_t min, uint64_t max)
3872 struct drm_property *property;
3874 property = drm_property_create(dev, flags, name, 2);
3878 property->values[0] = min;
3879 property->values[1] = max;
3885 * drm_property_create_range - create a new unsigned ranged property type
3887 * @flags: flags specifying the property type
3888 * @name: name of the property
3889 * @min: minimum value of the property
3890 * @max: maximum value of the property
3892 * This creates a new generic drm property which can then be attached to a drm
3893 * object with drm_object_attach_property. The returned property object must be
3894 * freed with drm_property_destroy.
3896 * Userspace is allowed to set any unsigned integer value in the (min, max)
3900 * A pointer to the newly created property on success, NULL on failure.
3902 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3904 uint64_t min, uint64_t max)
3906 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3909 EXPORT_SYMBOL(drm_property_create_range);
3912 * drm_property_create_signed_range - create a new signed ranged property type
3914 * @flags: flags specifying the property type
3915 * @name: name of the property
3916 * @min: minimum value of the property
3917 * @max: maximum value of the property
3919 * This creates a new generic drm property which can then be attached to a drm
3920 * object with drm_object_attach_property. The returned property object must be
3921 * freed with drm_property_destroy.
3923 * Userspace is allowed to set any signed integer value in the (min, max)
3927 * A pointer to the newly created property on success, NULL on failure.
3929 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3930 int flags, const char *name,
3931 int64_t min, int64_t max)
3933 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3934 name, I642U64(min), I642U64(max));
3936 EXPORT_SYMBOL(drm_property_create_signed_range);
3939 * drm_property_create_object - create a new object property type
3941 * @flags: flags specifying the property type
3942 * @name: name of the property
3943 * @type: object type from DRM_MODE_OBJECT_* defines
3945 * This creates a new generic drm property which can then be attached to a drm
3946 * object with drm_object_attach_property. The returned property object must be
3947 * freed with drm_property_destroy.
3949 * Userspace is only allowed to set this to any property value of the given
3950 * @type. Only useful for atomic properties, which is enforced.
3953 * A pointer to the newly created property on success, NULL on failure.
3955 struct drm_property *drm_property_create_object(struct drm_device *dev,
3956 int flags, const char *name, uint32_t type)
3958 struct drm_property *property;
3960 flags |= DRM_MODE_PROP_OBJECT;
3962 if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
3965 property = drm_property_create(dev, flags, name, 1);
3969 property->values[0] = type;
3973 EXPORT_SYMBOL(drm_property_create_object);
3976 * drm_property_create_bool - create a new boolean property type
3978 * @flags: flags specifying the property type
3979 * @name: name of the property
3981 * This creates a new generic drm property which can then be attached to a drm
3982 * object with drm_object_attach_property. The returned property object must be
3983 * freed with drm_property_destroy.
3985 * This is implemented as a ranged property with only {0, 1} as valid values.
3988 * A pointer to the newly created property on success, NULL on failure.
3990 struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
3993 return drm_property_create_range(dev, flags, name, 0, 1);
3995 EXPORT_SYMBOL(drm_property_create_bool);
3998 * drm_property_add_enum - add a possible value to an enumeration property
3999 * @property: enumeration property to change
4000 * @index: index of the new enumeration
4001 * @value: value of the new enumeration
4002 * @name: symbolic name of the new enumeration
4004 * This functions adds enumerations to a property.
4006 * It's use is deprecated, drivers should use one of the more specific helpers
4007 * to directly create the property with all enumerations already attached.
4010 * Zero on success, error code on failure.
4012 int drm_property_add_enum(struct drm_property *property, int index,
4013 uint64_t value, const char *name)
4015 struct drm_property_enum *prop_enum;
4017 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4018 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
4022 * Bitmask enum properties have the additional constraint of values
4025 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
4029 if (!list_empty(&property->enum_list)) {
4030 list_for_each_entry(prop_enum, &property->enum_list, head) {
4031 if (prop_enum->value == value) {
4032 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
4033 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
4039 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
4043 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
4044 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
4045 prop_enum->value = value;
4047 property->values[index] = value;
4048 list_add_tail(&prop_enum->head, &property->enum_list);
4051 EXPORT_SYMBOL(drm_property_add_enum);
4054 * drm_property_destroy - destroy a drm property
4056 * @property: property to destry
4058 * This function frees a property including any attached resources like
4059 * enumeration values.
4061 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
4063 struct drm_property_enum *prop_enum, *pt;
4065 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
4066 list_del(&prop_enum->head);
4070 if (property->num_values)
4071 kfree(property->values);
4072 drm_mode_object_put(dev, &property->base);
4073 list_del(&property->head);
4076 EXPORT_SYMBOL(drm_property_destroy);
4079 * drm_object_attach_property - attach a property to a modeset object
4080 * @obj: drm modeset object
4081 * @property: property to attach
4082 * @init_val: initial value of the property
4084 * This attaches the given property to the modeset object with the given initial
4085 * value. Currently this function cannot fail since the properties are stored in
4086 * a statically sized array.
4088 void drm_object_attach_property(struct drm_mode_object *obj,
4089 struct drm_property *property,
4092 int count = obj->properties->count;
4094 if (count == DRM_OBJECT_MAX_PROPERTY) {
4095 WARN(1, "Failed to attach object property (type: 0x%x). Please "
4096 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
4097 "you see this message on the same object type.\n",
4102 obj->properties->properties[count] = property;
4103 obj->properties->values[count] = init_val;
4104 obj->properties->count++;
4105 if (property->flags & DRM_MODE_PROP_ATOMIC)
4106 obj->properties->atomic_count++;
4108 EXPORT_SYMBOL(drm_object_attach_property);
4111 * drm_object_property_set_value - set the value of a property
4112 * @obj: drm mode object to set property value for
4113 * @property: property to set
4114 * @val: value the property should be set to
4116 * This functions sets a given property on a given object. This function only
4117 * changes the software state of the property, it does not call into the
4118 * driver's ->set_property callback.
4121 * Zero on success, error code on failure.
4123 int drm_object_property_set_value(struct drm_mode_object *obj,
4124 struct drm_property *property, uint64_t val)
4128 for (i = 0; i < obj->properties->count; i++) {
4129 if (obj->properties->properties[i] == property) {
4130 obj->properties->values[i] = val;
4137 EXPORT_SYMBOL(drm_object_property_set_value);
4140 * drm_object_property_get_value - retrieve the value of a property
4141 * @obj: drm mode object to get property value from
4142 * @property: property to retrieve
4143 * @val: storage for the property value
4145 * This function retrieves the softare state of the given property for the given
4146 * property. Since there is no driver callback to retrieve the current property
4147 * value this might be out of sync with the hardware, depending upon the driver
4151 * Zero on success, error code on failure.
4153 int drm_object_property_get_value(struct drm_mode_object *obj,
4154 struct drm_property *property, uint64_t *val)
4158 /* read-only properties bypass atomic mechanism and still store
4159 * their value in obj->properties->values[].. mostly to avoid
4160 * having to deal w/ EDID and similar props in atomic paths:
4162 if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
4163 !(property->flags & DRM_MODE_PROP_IMMUTABLE))
4164 return drm_atomic_get_property(obj, property, val);
4166 for (i = 0; i < obj->properties->count; i++) {
4167 if (obj->properties->properties[i] == property) {
4168 *val = obj->properties->values[i];
4175 EXPORT_SYMBOL(drm_object_property_get_value);
4178 * drm_mode_getproperty_ioctl - get the property metadata
4181 * @file_priv: DRM file info
4183 * This function retrieves the metadata for a given property, like the different
4184 * possible values for an enum property or the limits for a range property.
4186 * Blob properties are special
4188 * Called by the user via ioctl.
4191 * Zero on success, negative errno on failure.
4193 int drm_mode_getproperty_ioctl(struct drm_device *dev,
4194 void *data, struct drm_file *file_priv)
4196 struct drm_mode_get_property *out_resp = data;
4197 struct drm_property *property;
4199 int value_count = 0;
4202 struct drm_property_enum *prop_enum;
4203 struct drm_mode_property_enum __user *enum_ptr;
4204 uint64_t __user *values_ptr;
4206 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4209 drm_modeset_lock_all(dev);
4210 property = drm_property_find(dev, out_resp->prop_id);
4216 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4217 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4218 list_for_each_entry(prop_enum, &property->enum_list, head)
4222 value_count = property->num_values;
4224 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
4225 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
4226 out_resp->flags = property->flags;
4228 if ((out_resp->count_values >= value_count) && value_count) {
4229 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
4230 for (i = 0; i < value_count; i++) {
4231 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
4237 out_resp->count_values = value_count;
4239 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4240 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4241 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
4243 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
4244 list_for_each_entry(prop_enum, &property->enum_list, head) {
4246 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
4251 if (copy_to_user(&enum_ptr[copied].name,
4252 &prop_enum->name, DRM_PROP_NAME_LEN)) {
4259 out_resp->count_enum_blobs = enum_count;
4263 * NOTE: The idea seems to have been to use this to read all the blob
4264 * property values. But nothing ever added them to the corresponding
4265 * list, userspace always used the special-purpose get_blob ioctl to
4266 * read the value for a blob property. It also doesn't make a lot of
4267 * sense to return values here when everything else is just metadata for
4268 * the property itself.
4270 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4271 out_resp->count_enum_blobs = 0;
4273 drm_modeset_unlock_all(dev);
4278 * drm_property_create_blob - Create new blob property
4280 * Creates a new blob property for a specified DRM device, optionally
4283 * @dev: DRM device to create property for
4284 * @length: Length to allocate for blob data
4285 * @data: If specified, copies data into blob
4288 * New blob property with a single reference on success, or an ERR_PTR
4291 struct drm_property_blob *
4292 drm_property_create_blob(struct drm_device *dev, size_t length,
4295 struct drm_property_blob *blob;
4298 if (!length || length > ULONG_MAX - sizeof(struct drm_property_blob))
4299 return ERR_PTR(-EINVAL);
4301 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
4303 return ERR_PTR(-ENOMEM);
4305 /* This must be explicitly initialised, so we can safely call list_del
4306 * on it in the removal handler, even if it isn't in a file list. */
4307 INIT_LIST_HEAD(&blob->head_file);
4308 blob->length = length;
4312 memcpy(blob->data, data, length);
4314 mutex_lock(&dev->mode_config.blob_lock);
4316 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
4319 mutex_unlock(&dev->mode_config.blob_lock);
4320 return ERR_PTR(-EINVAL);
4323 kref_init(&blob->refcount);
4325 list_add_tail(&blob->head_global,
4326 &dev->mode_config.property_blob_list);
4328 mutex_unlock(&dev->mode_config.blob_lock);
4332 EXPORT_SYMBOL(drm_property_create_blob);
4335 * drm_property_free_blob - Blob property destructor
4337 * Internal free function for blob properties; must not be used directly.
4341 static void drm_property_free_blob(struct kref *kref)
4343 struct drm_property_blob *blob =
4344 container_of(kref, struct drm_property_blob, refcount);
4346 WARN_ON(!mutex_is_locked(&blob->dev->mode_config.blob_lock));
4348 list_del(&blob->head_global);
4349 list_del(&blob->head_file);
4350 drm_mode_object_put(blob->dev, &blob->base);
4356 * drm_property_unreference_blob - Unreference a blob property
4358 * Drop a reference on a blob property. May free the object.
4360 * @blob: Pointer to blob property
4362 void drm_property_unreference_blob(struct drm_property_blob *blob)
4364 struct drm_device *dev;
4371 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4373 if (kref_put_mutex(&blob->refcount, drm_property_free_blob,
4374 &dev->mode_config.blob_lock))
4375 mutex_unlock(&dev->mode_config.blob_lock);
4377 might_lock(&dev->mode_config.blob_lock);
4379 EXPORT_SYMBOL(drm_property_unreference_blob);
4382 * drm_property_unreference_blob_locked - Unreference a blob property with blob_lock held
4384 * Drop a reference on a blob property. May free the object. This must be
4385 * called with blob_lock held.
4387 * @blob: Pointer to blob property
4389 static void drm_property_unreference_blob_locked(struct drm_property_blob *blob)
4394 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4396 kref_put(&blob->refcount, drm_property_free_blob);
4400 * drm_property_destroy_user_blobs - destroy all blobs created by this client
4402 * @file_priv: destroy all blobs owned by this file handle
4404 void drm_property_destroy_user_blobs(struct drm_device *dev,
4405 struct drm_file *file_priv)
4407 struct drm_property_blob *blob, *bt;
4409 mutex_lock(&dev->mode_config.blob_lock);
4411 list_for_each_entry_safe(blob, bt, &file_priv->blobs, head_file) {
4412 list_del_init(&blob->head_file);
4413 drm_property_unreference_blob_locked(blob);
4416 mutex_unlock(&dev->mode_config.blob_lock);
4420 * drm_property_reference_blob - Take a reference on an existing property
4422 * Take a new reference on an existing blob property.
4424 * @blob: Pointer to blob property
4426 struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob)
4428 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4429 kref_get(&blob->refcount);
4432 EXPORT_SYMBOL(drm_property_reference_blob);
4435 * Like drm_property_lookup_blob, but does not return an additional reference.
4436 * Must be called with blob_lock held.
4438 static struct drm_property_blob *__drm_property_lookup_blob(struct drm_device *dev,
4441 struct drm_mode_object *obj = NULL;
4442 struct drm_property_blob *blob;
4444 WARN_ON(!mutex_is_locked(&dev->mode_config.blob_lock));
4446 mutex_lock(&dev->mode_config.idr_mutex);
4447 obj = idr_find(&dev->mode_config.crtc_idr, id);
4448 if (!obj || (obj->type != DRM_MODE_OBJECT_BLOB) || (obj->id != id))
4451 blob = obj_to_blob(obj);
4452 mutex_unlock(&dev->mode_config.idr_mutex);
4458 * drm_property_lookup_blob - look up a blob property and take a reference
4460 * @id: id of the blob property
4462 * If successful, this takes an additional reference to the blob property.
4463 * callers need to make sure to eventually unreference the returned property
4464 * again, using @drm_property_unreference_blob.
4466 struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
4469 struct drm_property_blob *blob;
4471 mutex_lock(&dev->mode_config.blob_lock);
4472 blob = __drm_property_lookup_blob(dev, id);
4474 if (!kref_get_unless_zero(&blob->refcount))
4477 mutex_unlock(&dev->mode_config.blob_lock);
4481 EXPORT_SYMBOL(drm_property_lookup_blob);
4484 * drm_property_replace_global_blob - atomically replace existing blob property
4486 * @replace: location of blob property pointer to be replaced
4487 * @length: length of data for new blob, or 0 for no data
4488 * @data: content for new blob, or NULL for no data
4489 * @obj_holds_id: optional object for property holding blob ID
4490 * @prop_holds_id: optional property holding blob ID
4491 * @return 0 on success or error on failure
4493 * This function will atomically replace a global property in the blob list,
4494 * optionally updating a property which holds the ID of that property. It is
4495 * guaranteed to be atomic: no caller will be allowed to see intermediate
4496 * results, and either the entire operation will succeed and clean up the
4497 * previous property, or it will fail and the state will be unchanged.
4499 * If length is 0 or data is NULL, no new blob will be created, and the holding
4500 * property, if specified, will be set to 0.
4502 * Access to the replace pointer is assumed to be protected by the caller, e.g.
4503 * by holding the relevant modesetting object lock for its parent.
4505 * For example, a drm_connector has a 'PATH' property, which contains the ID
4506 * of a blob property with the value of the MST path information. Calling this
4507 * function with replace pointing to the connector's path_blob_ptr, length and
4508 * data set for the new path information, obj_holds_id set to the connector's
4509 * base object, and prop_holds_id set to the path property name, will perform
4510 * a completely atomic update. The access to path_blob_ptr is protected by the
4511 * caller holding a lock on the connector.
4513 static int drm_property_replace_global_blob(struct drm_device *dev,
4514 struct drm_property_blob **replace,
4517 struct drm_mode_object *obj_holds_id,
4518 struct drm_property *prop_holds_id)
4520 struct drm_property_blob *new_blob = NULL;
4521 struct drm_property_blob *old_blob = NULL;
4524 WARN_ON(replace == NULL);
4526 old_blob = *replace;
4528 if (length && data) {
4529 new_blob = drm_property_create_blob(dev, length, data);
4530 if (IS_ERR(new_blob))
4531 return PTR_ERR(new_blob);
4534 /* This does not need to be synchronised with blob_lock, as the
4535 * get_properties ioctl locks all modesetting objects, and
4536 * obj_holds_id must be locked before calling here, so we cannot
4537 * have its value out of sync with the list membership modified
4538 * below under blob_lock. */
4540 ret = drm_object_property_set_value(obj_holds_id,
4543 new_blob->base.id : 0);
4548 drm_property_unreference_blob(old_blob);
4549 *replace = new_blob;
4554 drm_property_unreference_blob(new_blob);
4559 * drm_mode_getblob_ioctl - get the contents of a blob property value
4562 * @file_priv: DRM file info
4564 * This function retrieves the contents of a blob property. The value stored in
4565 * an object's blob property is just a normal modeset object id.
4567 * Called by the user via ioctl.
4570 * Zero on success, negative errno on failure.
4572 int drm_mode_getblob_ioctl(struct drm_device *dev,
4573 void *data, struct drm_file *file_priv)
4575 struct drm_mode_get_blob *out_resp = data;
4576 struct drm_property_blob *blob;
4578 void __user *blob_ptr;
4580 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4583 drm_modeset_lock_all(dev);
4584 mutex_lock(&dev->mode_config.blob_lock);
4585 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
4591 if (out_resp->length == blob->length) {
4592 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4593 if (copy_to_user(blob_ptr, blob->data, blob->length)) {
4598 out_resp->length = blob->length;
4601 mutex_unlock(&dev->mode_config.blob_lock);
4602 drm_modeset_unlock_all(dev);
4607 * drm_mode_createblob_ioctl - create a new blob property
4610 * @file_priv: DRM file info
4612 * This function creates a new blob property with user-defined values. In order
4613 * to give us sensible validation and checking when creating, rather than at
4614 * every potential use, we also require a type to be provided upfront.
4616 * Called by the user via ioctl.
4619 * Zero on success, negative errno on failure.
4621 int drm_mode_createblob_ioctl(struct drm_device *dev,
4622 void *data, struct drm_file *file_priv)
4624 struct drm_mode_create_blob *out_resp = data;
4625 struct drm_property_blob *blob;
4626 void __user *blob_ptr;
4629 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4632 blob = drm_property_create_blob(dev, out_resp->length, NULL);
4634 return PTR_ERR(blob);
4636 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4637 if (copy_from_user(blob->data, blob_ptr, out_resp->length)) {
4642 /* Dropping the lock between create_blob and our access here is safe
4643 * as only the same file_priv can remove the blob; at this point, it is
4644 * not associated with any file_priv. */
4645 mutex_lock(&dev->mode_config.blob_lock);
4646 out_resp->blob_id = blob->base.id;
4647 list_add_tail(&blob->head_file, &file_priv->blobs);
4648 mutex_unlock(&dev->mode_config.blob_lock);
4653 drm_property_unreference_blob(blob);
4658 * drm_mode_destroyblob_ioctl - destroy a user blob property
4661 * @file_priv: DRM file info
4663 * Destroy an existing user-defined blob property.
4665 * Called by the user via ioctl.
4668 * Zero on success, negative errno on failure.
4670 int drm_mode_destroyblob_ioctl(struct drm_device *dev,
4671 void *data, struct drm_file *file_priv)
4673 struct drm_mode_destroy_blob *out_resp = data;
4674 struct drm_property_blob *blob = NULL, *bt;
4678 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4681 mutex_lock(&dev->mode_config.blob_lock);
4682 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
4688 /* Ensure the property was actually created by this user. */
4689 list_for_each_entry(bt, &file_priv->blobs, head_file) {
4701 /* We must drop head_file here, because we may not be the last
4702 * reference on the blob. */
4703 list_del_init(&blob->head_file);
4704 drm_property_unreference_blob_locked(blob);
4705 mutex_unlock(&dev->mode_config.blob_lock);
4710 mutex_unlock(&dev->mode_config.blob_lock);
4715 * drm_mode_connector_set_path_property - set tile property on connector
4716 * @connector: connector to set property on.
4717 * @path: path to use for property; must not be NULL.
4719 * This creates a property to expose to userspace to specify a
4720 * connector path. This is mainly used for DisplayPort MST where
4721 * connectors have a topology and we want to allow userspace to give
4722 * them more meaningful names.
4725 * Zero on success, negative errno on failure.
4727 int drm_mode_connector_set_path_property(struct drm_connector *connector,
4730 struct drm_device *dev = connector->dev;
4733 ret = drm_property_replace_global_blob(dev,
4734 &connector->path_blob_ptr,
4738 dev->mode_config.path_property);
4741 EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4744 * drm_mode_connector_set_tile_property - set tile property on connector
4745 * @connector: connector to set property on.
4747 * This looks up the tile information for a connector, and creates a
4748 * property for userspace to parse if it exists. The property is of
4749 * the form of 8 integers using ':' as a separator.
4752 * Zero on success, errno on failure.
4754 int drm_mode_connector_set_tile_property(struct drm_connector *connector)
4756 struct drm_device *dev = connector->dev;
4760 if (!connector->has_tile) {
4761 ret = drm_property_replace_global_blob(dev,
4762 &connector->tile_blob_ptr,
4766 dev->mode_config.tile_property);
4770 snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4771 connector->tile_group->id, connector->tile_is_single_monitor,
4772 connector->num_h_tile, connector->num_v_tile,
4773 connector->tile_h_loc, connector->tile_v_loc,
4774 connector->tile_h_size, connector->tile_v_size);
4776 ret = drm_property_replace_global_blob(dev,
4777 &connector->tile_blob_ptr,
4781 dev->mode_config.tile_property);
4784 EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
4787 * drm_mode_connector_update_edid_property - update the edid property of a connector
4788 * @connector: drm connector
4789 * @edid: new value of the edid property
4791 * This function creates a new blob modeset object and assigns its id to the
4792 * connector's edid property.
4795 * Zero on success, negative errno on failure.
4797 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4798 const struct edid *edid)
4800 struct drm_device *dev = connector->dev;
4804 /* ignore requests to set edid when overridden */
4805 if (connector->override_edid)
4809 size = EDID_LENGTH * (1 + edid->extensions);
4811 ret = drm_property_replace_global_blob(dev,
4812 &connector->edid_blob_ptr,
4816 dev->mode_config.edid_property);
4819 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4821 /* Some properties could refer to dynamic refcnt'd objects, or things that
4822 * need special locking to handle lifetime issues (ie. to ensure the prop
4823 * value doesn't become invalid part way through the property update due to
4824 * race). The value returned by reference via 'obj' should be passed back
4825 * to drm_property_change_valid_put() after the property is set (and the
4826 * object to which the property is attached has a chance to take it's own
4829 bool drm_property_change_valid_get(struct drm_property *property,
4830 uint64_t value, struct drm_mode_object **ref)
4834 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4839 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
4840 if (value < property->values[0] || value > property->values[1])
4843 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4844 int64_t svalue = U642I64(value);
4846 if (svalue < U642I64(property->values[0]) ||
4847 svalue > U642I64(property->values[1]))
4850 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4851 uint64_t valid_mask = 0;
4853 for (i = 0; i < property->num_values; i++)
4854 valid_mask |= (1ULL << property->values[i]);
4855 return !(value & ~valid_mask);
4856 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
4857 struct drm_property_blob *blob;
4862 blob = drm_property_lookup_blob(property->dev, value);
4869 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4870 /* a zero value for an object property translates to null: */
4874 /* handle refcnt'd objects specially: */
4875 if (property->values[0] == DRM_MODE_OBJECT_FB) {
4876 struct drm_framebuffer *fb;
4877 fb = drm_framebuffer_lookup(property->dev, value);
4885 return _object_find(property->dev, value, property->values[0]) != NULL;
4889 for (i = 0; i < property->num_values; i++)
4890 if (property->values[i] == value)
4895 void drm_property_change_valid_put(struct drm_property *property,
4896 struct drm_mode_object *ref)
4901 if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4902 if (property->values[0] == DRM_MODE_OBJECT_FB)
4903 drm_framebuffer_unreference(obj_to_fb(ref));
4904 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4905 drm_property_unreference_blob(obj_to_blob(ref));
4909 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4912 * @file_priv: DRM file info
4914 * This function sets the current value for a connectors's property. It also
4915 * calls into a driver's ->set_property callback to update the hardware state
4917 * Called by the user via ioctl.
4920 * Zero on success, negative errno on failure.
4922 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4923 void *data, struct drm_file *file_priv)
4925 struct drm_mode_connector_set_property *conn_set_prop = data;
4926 struct drm_mode_obj_set_property obj_set_prop = {
4927 .value = conn_set_prop->value,
4928 .prop_id = conn_set_prop->prop_id,
4929 .obj_id = conn_set_prop->connector_id,
4930 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4933 /* It does all the locking and checking we need */
4934 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
4937 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4938 struct drm_property *property,
4942 struct drm_connector *connector = obj_to_connector(obj);
4944 /* Do DPMS ourselves */
4945 if (property == connector->dev->mode_config.dpms_property) {
4946 ret = (*connector->funcs->dpms)(connector, (int)value);
4947 } else if (connector->funcs->set_property)
4948 ret = connector->funcs->set_property(connector, property, value);
4950 /* store the property value if successful */
4952 drm_object_property_set_value(&connector->base, property, value);
4956 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4957 struct drm_property *property,
4961 struct drm_crtc *crtc = obj_to_crtc(obj);
4963 if (crtc->funcs->set_property)
4964 ret = crtc->funcs->set_property(crtc, property, value);
4966 drm_object_property_set_value(obj, property, value);
4972 * drm_mode_plane_set_obj_prop - set the value of a property
4973 * @plane: drm plane object to set property value for
4974 * @property: property to set
4975 * @value: value the property should be set to
4977 * This functions sets a given property on a given plane object. This function
4978 * calls the driver's ->set_property callback and changes the software state of
4979 * the property if the callback succeeds.
4982 * Zero on success, error code on failure.
4984 int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4985 struct drm_property *property,
4989 struct drm_mode_object *obj = &plane->base;
4991 if (plane->funcs->set_property)
4992 ret = plane->funcs->set_property(plane, property, value);
4994 drm_object_property_set_value(obj, property, value);
4998 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
5001 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
5004 * @file_priv: DRM file info
5006 * This function retrieves the current value for an object's property. Compared
5007 * to the connector specific ioctl this one is extended to also work on crtc and
5010 * Called by the user via ioctl.
5013 * Zero on success, negative errno on failure.
5015 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
5016 struct drm_file *file_priv)
5018 struct drm_mode_obj_get_properties *arg = data;
5019 struct drm_mode_object *obj;
5022 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5025 drm_modeset_lock_all(dev);
5027 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
5032 if (!obj->properties) {
5037 ret = get_properties(obj, file_priv->atomic,
5038 (uint32_t __user *)(unsigned long)(arg->props_ptr),
5039 (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
5043 drm_modeset_unlock_all(dev);
5048 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
5051 * @file_priv: DRM file info
5053 * This function sets the current value for an object's property. It also calls
5054 * into a driver's ->set_property callback to update the hardware state.
5055 * Compared to the connector specific ioctl this one is extended to also work on
5056 * crtc and plane objects.
5058 * Called by the user via ioctl.
5061 * Zero on success, negative errno on failure.
5063 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
5064 struct drm_file *file_priv)
5066 struct drm_mode_obj_set_property *arg = data;
5067 struct drm_mode_object *arg_obj;
5068 struct drm_mode_object *prop_obj;
5069 struct drm_property *property;
5070 int i, ret = -EINVAL;
5071 struct drm_mode_object *ref;
5073 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5076 drm_modeset_lock_all(dev);
5078 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
5083 if (!arg_obj->properties)
5086 for (i = 0; i < arg_obj->properties->count; i++)
5087 if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
5090 if (i == arg_obj->properties->count)
5093 prop_obj = drm_mode_object_find(dev, arg->prop_id,
5094 DRM_MODE_OBJECT_PROPERTY);
5099 property = obj_to_property(prop_obj);
5101 if (!drm_property_change_valid_get(property, arg->value, &ref))
5104 switch (arg_obj->type) {
5105 case DRM_MODE_OBJECT_CONNECTOR:
5106 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
5109 case DRM_MODE_OBJECT_CRTC:
5110 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
5112 case DRM_MODE_OBJECT_PLANE:
5113 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
5114 property, arg->value);
5118 drm_property_change_valid_put(property, ref);
5121 drm_modeset_unlock_all(dev);
5126 * drm_mode_connector_attach_encoder - attach a connector to an encoder
5127 * @connector: connector to attach
5128 * @encoder: encoder to attach @connector to
5130 * This function links up a connector to an encoder. Note that the routing
5131 * restrictions between encoders and crtcs are exposed to userspace through the
5132 * possible_clones and possible_crtcs bitmasks.
5135 * Zero on success, negative errno on failure.
5137 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
5138 struct drm_encoder *encoder)
5143 * In the past, drivers have attempted to model the static association
5144 * of connector to encoder in simple connector/encoder devices using a
5145 * direct assignment of connector->encoder = encoder. This connection
5146 * is a logical one and the responsibility of the core, so drivers are
5147 * expected not to mess with this.
5149 * Note that the error return should've been enough here, but a large
5150 * majority of drivers ignores the return value, so add in a big WARN
5151 * to get people's attention.
5153 if (WARN_ON(connector->encoder))
5156 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
5157 if (connector->encoder_ids[i] == 0) {
5158 connector->encoder_ids[i] = encoder->base.id;
5164 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
5167 * drm_mode_crtc_set_gamma_size - set the gamma table size
5168 * @crtc: CRTC to set the gamma table size for
5169 * @gamma_size: size of the gamma table
5171 * Drivers which support gamma tables should set this to the supported gamma
5172 * table size when initializing the CRTC. Currently the drm core only supports a
5173 * fixed gamma table size.
5176 * Zero on success, negative errno on failure.
5178 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
5181 crtc->gamma_size = gamma_size;
5183 crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
5185 if (!crtc->gamma_store) {
5186 crtc->gamma_size = 0;
5192 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
5195 * drm_mode_gamma_set_ioctl - set the gamma table
5198 * @file_priv: DRM file info
5200 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
5201 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
5203 * Called by the user via ioctl.
5206 * Zero on success, negative errno on failure.
5208 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
5209 void *data, struct drm_file *file_priv)
5211 struct drm_mode_crtc_lut *crtc_lut = data;
5212 struct drm_crtc *crtc;
5213 void *r_base, *g_base, *b_base;
5217 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5220 drm_modeset_lock_all(dev);
5221 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5227 if (crtc->funcs->gamma_set == NULL) {
5232 /* memcpy into gamma store */
5233 if (crtc_lut->gamma_size != crtc->gamma_size) {
5238 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5239 r_base = crtc->gamma_store;
5240 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
5245 g_base = r_base + size;
5246 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
5251 b_base = g_base + size;
5252 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
5257 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
5260 drm_modeset_unlock_all(dev);
5266 * drm_mode_gamma_get_ioctl - get the gamma table
5269 * @file_priv: DRM file info
5271 * Copy the current gamma table into the storage provided. This also provides
5272 * the gamma table size the driver expects, which can be used to size the
5273 * allocated storage.
5275 * Called by the user via ioctl.
5278 * Zero on success, negative errno on failure.
5280 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
5281 void *data, struct drm_file *file_priv)
5283 struct drm_mode_crtc_lut *crtc_lut = data;
5284 struct drm_crtc *crtc;
5285 void *r_base, *g_base, *b_base;
5289 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5292 drm_modeset_lock_all(dev);
5293 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5299 /* memcpy into gamma store */
5300 if (crtc_lut->gamma_size != crtc->gamma_size) {
5305 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5306 r_base = crtc->gamma_store;
5307 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
5312 g_base = r_base + size;
5313 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
5318 b_base = g_base + size;
5319 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
5324 drm_modeset_unlock_all(dev);
5329 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
5332 * @file_priv: DRM file info
5334 * This schedules an asynchronous update on a given CRTC, called page flip.
5335 * Optionally a drm event is generated to signal the completion of the event.
5336 * Generic drivers cannot assume that a pageflip with changed framebuffer
5337 * properties (including driver specific metadata like tiling layout) will work,
5338 * but some drivers support e.g. pixel format changes through the pageflip
5341 * Called by the user via ioctl.
5344 * Zero on success, negative errno on failure.
5346 int drm_mode_page_flip_ioctl(struct drm_device *dev,
5347 void *data, struct drm_file *file_priv)
5349 struct drm_mode_crtc_page_flip *page_flip = data;
5350 struct drm_crtc *crtc;
5351 struct drm_framebuffer *fb = NULL;
5352 struct drm_pending_vblank_event *e = NULL;
5355 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
5356 page_flip->reserved != 0)
5359 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
5362 crtc = drm_crtc_find(dev, page_flip->crtc_id);
5366 drm_modeset_lock_crtc(crtc, crtc->primary);
5367 if (crtc->primary->fb == NULL) {
5368 /* The framebuffer is currently unbound, presumably
5369 * due to a hotplug event, that userspace has not
5376 if (crtc->funcs->page_flip == NULL)
5379 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
5386 const struct drm_plane_state *state = crtc->primary->state;
5388 ret = check_src_coords(state->src_x, state->src_y,
5389 state->src_w, state->src_h, fb);
5391 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
5396 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
5397 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
5402 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
5403 e = kzalloc(sizeof *e, GFP_KERNEL);
5408 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
5409 e->event.base.length = sizeof(e->event);
5410 e->event.user_data = page_flip->user_data;
5411 ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base);
5418 crtc->primary->old_fb = crtc->primary->fb;
5419 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
5421 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT)
5422 drm_event_cancel_free(dev, &e->base);
5423 /* Keep the old fb, don't unref it. */
5424 crtc->primary->old_fb = NULL;
5426 crtc->primary->fb = fb;
5427 /* Unref only the old framebuffer. */
5433 drm_framebuffer_unreference(fb);
5434 if (crtc->primary->old_fb)
5435 drm_framebuffer_unreference(crtc->primary->old_fb);
5436 crtc->primary->old_fb = NULL;
5437 drm_modeset_unlock_crtc(crtc);
5443 * drm_mode_config_reset - call ->reset callbacks
5446 * This functions calls all the crtc's, encoder's and connector's ->reset
5447 * callback. Drivers can use this in e.g. their driver load or resume code to
5448 * reset hardware and software state.
5450 void drm_mode_config_reset(struct drm_device *dev)
5452 struct drm_crtc *crtc;
5453 struct drm_plane *plane;
5454 struct drm_encoder *encoder;
5455 struct drm_connector *connector;
5457 drm_for_each_plane(plane, dev)
5458 if (plane->funcs->reset)
5459 plane->funcs->reset(plane);
5461 drm_for_each_crtc(crtc, dev)
5462 if (crtc->funcs->reset)
5463 crtc->funcs->reset(crtc);
5465 drm_for_each_encoder(encoder, dev)
5466 if (encoder->funcs->reset)
5467 encoder->funcs->reset(encoder);
5469 mutex_lock(&dev->mode_config.mutex);
5470 drm_for_each_connector(connector, dev)
5471 if (connector->funcs->reset)
5472 connector->funcs->reset(connector);
5473 mutex_unlock(&dev->mode_config.mutex);
5475 EXPORT_SYMBOL(drm_mode_config_reset);
5478 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5481 * @file_priv: DRM file info
5483 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5484 * TTM or something else entirely) and returns the resulting buffer handle. This
5485 * handle can then be wrapped up into a framebuffer modeset object.
5487 * Note that userspace is not allowed to use such objects for render
5488 * acceleration - drivers must create their own private ioctls for such a use
5491 * Called by the user via ioctl.
5494 * Zero on success, negative errno on failure.
5496 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
5497 void *data, struct drm_file *file_priv)
5499 struct drm_mode_create_dumb *args = data;
5500 u32 cpp, stride, size;
5502 if (!dev->driver->dumb_create)
5504 if (!args->width || !args->height || !args->bpp)
5507 /* overflow checks for 32bit size calculations */
5508 /* NOTE: DIV_ROUND_UP() can overflow */
5509 cpp = DIV_ROUND_UP(args->bpp, 8);
5510 if (!cpp || cpp > 0xffffffffU / args->width)
5512 stride = cpp * args->width;
5513 if (args->height > 0xffffffffU / stride)
5516 /* test for wrap-around */
5517 size = args->height * stride;
5518 if (PAGE_ALIGN(size) == 0)
5522 * handle, pitch and size are output parameters. Zero them out to
5523 * prevent drivers from accidentally using uninitialized data. Since
5524 * not all existing userspace is clearing these fields properly we
5525 * cannot reject IOCTL with garbage in them.
5531 return dev->driver->dumb_create(file_priv, dev, args);
5535 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5538 * @file_priv: DRM file info
5540 * Allocate an offset in the drm device node's address space to be able to
5541 * memory map a dumb buffer.
5543 * Called by the user via ioctl.
5546 * Zero on success, negative errno on failure.
5548 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
5549 void *data, struct drm_file *file_priv)
5551 struct drm_mode_map_dumb *args = data;
5553 /* call driver ioctl to get mmap offset */
5554 if (!dev->driver->dumb_map_offset)
5557 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
5561 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5564 * @file_priv: DRM file info
5566 * This destroys the userspace handle for the given dumb backing storage buffer.
5567 * Since buffer objects must be reference counted in the kernel a buffer object
5568 * won't be immediately freed if a framebuffer modeset object still uses it.
5570 * Called by the user via ioctl.
5573 * Zero on success, negative errno on failure.
5575 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
5576 void *data, struct drm_file *file_priv)
5578 struct drm_mode_destroy_dumb *args = data;
5580 if (!dev->driver->dumb_destroy)
5583 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
5587 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5588 * @format: pixel format (DRM_FORMAT_*)
5589 * @depth: storage for the depth value
5590 * @bpp: storage for the bpp value
5592 * This only supports RGB formats here for compat with code that doesn't use
5593 * pixel formats directly yet.
5595 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
5600 case DRM_FORMAT_RGB332:
5601 case DRM_FORMAT_BGR233:
5605 case DRM_FORMAT_XRGB1555:
5606 case DRM_FORMAT_XBGR1555:
5607 case DRM_FORMAT_RGBX5551:
5608 case DRM_FORMAT_BGRX5551:
5609 case DRM_FORMAT_ARGB1555:
5610 case DRM_FORMAT_ABGR1555:
5611 case DRM_FORMAT_RGBA5551:
5612 case DRM_FORMAT_BGRA5551:
5616 case DRM_FORMAT_RGB565:
5617 case DRM_FORMAT_BGR565:
5621 case DRM_FORMAT_RGB888:
5622 case DRM_FORMAT_BGR888:
5626 case DRM_FORMAT_XRGB8888:
5627 case DRM_FORMAT_XBGR8888:
5628 case DRM_FORMAT_RGBX8888:
5629 case DRM_FORMAT_BGRX8888:
5633 case DRM_FORMAT_XRGB2101010:
5634 case DRM_FORMAT_XBGR2101010:
5635 case DRM_FORMAT_RGBX1010102:
5636 case DRM_FORMAT_BGRX1010102:
5637 case DRM_FORMAT_ARGB2101010:
5638 case DRM_FORMAT_ABGR2101010:
5639 case DRM_FORMAT_RGBA1010102:
5640 case DRM_FORMAT_BGRA1010102:
5644 case DRM_FORMAT_ARGB8888:
5645 case DRM_FORMAT_ABGR8888:
5646 case DRM_FORMAT_RGBA8888:
5647 case DRM_FORMAT_BGRA8888:
5652 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5653 drm_get_format_name(format));
5659 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
5662 * drm_format_num_planes - get the number of planes for format
5663 * @format: pixel format (DRM_FORMAT_*)
5666 * The number of planes used by the specified pixel format.
5668 int drm_format_num_planes(uint32_t format)
5671 case DRM_FORMAT_YUV410:
5672 case DRM_FORMAT_YVU410:
5673 case DRM_FORMAT_YUV411:
5674 case DRM_FORMAT_YVU411:
5675 case DRM_FORMAT_YUV420:
5676 case DRM_FORMAT_YVU420:
5677 case DRM_FORMAT_YUV422:
5678 case DRM_FORMAT_YVU422:
5679 case DRM_FORMAT_YUV444:
5680 case DRM_FORMAT_YVU444:
5682 case DRM_FORMAT_NV12:
5683 case DRM_FORMAT_NV21:
5684 case DRM_FORMAT_NV16:
5685 case DRM_FORMAT_NV61:
5686 case DRM_FORMAT_NV24:
5687 case DRM_FORMAT_NV42:
5693 EXPORT_SYMBOL(drm_format_num_planes);
5696 * drm_format_plane_cpp - determine the bytes per pixel value
5697 * @format: pixel format (DRM_FORMAT_*)
5698 * @plane: plane index
5701 * The bytes per pixel value for the specified plane.
5703 int drm_format_plane_cpp(uint32_t format, int plane)
5708 if (plane >= drm_format_num_planes(format))
5712 case DRM_FORMAT_YUYV:
5713 case DRM_FORMAT_YVYU:
5714 case DRM_FORMAT_UYVY:
5715 case DRM_FORMAT_VYUY:
5717 case DRM_FORMAT_NV12:
5718 case DRM_FORMAT_NV21:
5719 case DRM_FORMAT_NV16:
5720 case DRM_FORMAT_NV61:
5721 case DRM_FORMAT_NV24:
5722 case DRM_FORMAT_NV42:
5723 return plane ? 2 : 1;
5724 case DRM_FORMAT_YUV410:
5725 case DRM_FORMAT_YVU410:
5726 case DRM_FORMAT_YUV411:
5727 case DRM_FORMAT_YVU411:
5728 case DRM_FORMAT_YUV420:
5729 case DRM_FORMAT_YVU420:
5730 case DRM_FORMAT_YUV422:
5731 case DRM_FORMAT_YVU422:
5732 case DRM_FORMAT_YUV444:
5733 case DRM_FORMAT_YVU444:
5736 drm_fb_get_bpp_depth(format, &depth, &bpp);
5740 EXPORT_SYMBOL(drm_format_plane_cpp);
5743 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5744 * @format: pixel format (DRM_FORMAT_*)
5747 * The horizontal chroma subsampling factor for the
5748 * specified pixel format.
5750 int drm_format_horz_chroma_subsampling(uint32_t format)
5753 case DRM_FORMAT_YUV411:
5754 case DRM_FORMAT_YVU411:
5755 case DRM_FORMAT_YUV410:
5756 case DRM_FORMAT_YVU410:
5758 case DRM_FORMAT_YUYV:
5759 case DRM_FORMAT_YVYU:
5760 case DRM_FORMAT_UYVY:
5761 case DRM_FORMAT_VYUY:
5762 case DRM_FORMAT_NV12:
5763 case DRM_FORMAT_NV21:
5764 case DRM_FORMAT_NV16:
5765 case DRM_FORMAT_NV61:
5766 case DRM_FORMAT_YUV422:
5767 case DRM_FORMAT_YVU422:
5768 case DRM_FORMAT_YUV420:
5769 case DRM_FORMAT_YVU420:
5775 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5778 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5779 * @format: pixel format (DRM_FORMAT_*)
5782 * The vertical chroma subsampling factor for the
5783 * specified pixel format.
5785 int drm_format_vert_chroma_subsampling(uint32_t format)
5788 case DRM_FORMAT_YUV410:
5789 case DRM_FORMAT_YVU410:
5791 case DRM_FORMAT_YUV420:
5792 case DRM_FORMAT_YVU420:
5793 case DRM_FORMAT_NV12:
5794 case DRM_FORMAT_NV21:
5800 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
5803 * drm_format_plane_width - width of the plane given the first plane
5804 * @width: width of the first plane
5805 * @format: pixel format
5806 * @plane: plane index
5809 * The width of @plane, given that the width of the first plane is @width.
5811 int drm_format_plane_width(int width, uint32_t format, int plane)
5813 if (plane >= drm_format_num_planes(format))
5819 return width / drm_format_horz_chroma_subsampling(format);
5821 EXPORT_SYMBOL(drm_format_plane_width);
5824 * drm_format_plane_height - height of the plane given the first plane
5825 * @height: height of the first plane
5826 * @format: pixel format
5827 * @plane: plane index
5830 * The height of @plane, given that the height of the first plane is @height.
5832 int drm_format_plane_height(int height, uint32_t format, int plane)
5834 if (plane >= drm_format_num_planes(format))
5840 return height / drm_format_vert_chroma_subsampling(format);
5842 EXPORT_SYMBOL(drm_format_plane_height);
5845 * drm_rotation_simplify() - Try to simplify the rotation
5846 * @rotation: Rotation to be simplified
5847 * @supported_rotations: Supported rotations
5849 * Attempt to simplify the rotation to a form that is supported.
5850 * Eg. if the hardware supports everything except DRM_REFLECT_X
5851 * one could call this function like this:
5853 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5854 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5855 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5857 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5858 * transforms the hardware supports, this function may not
5859 * be able to produce a supported transform, so the caller should
5860 * check the result afterwards.
5862 unsigned int drm_rotation_simplify(unsigned int rotation,
5863 unsigned int supported_rotations)
5865 if (rotation & ~supported_rotations) {
5866 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5867 rotation = (rotation & DRM_REFLECT_MASK) |
5868 BIT((ffs(rotation & DRM_ROTATE_MASK) + 1) % 4);
5873 EXPORT_SYMBOL(drm_rotation_simplify);
5876 * drm_mode_config_init - initialize DRM mode_configuration structure
5879 * Initialize @dev's mode_config structure, used for tracking the graphics
5880 * configuration of @dev.
5882 * Since this initializes the modeset locks, no locking is possible. Which is no
5883 * problem, since this should happen single threaded at init time. It is the
5884 * driver's problem to ensure this guarantee.
5887 void drm_mode_config_init(struct drm_device *dev)
5889 mutex_init(&dev->mode_config.mutex);
5890 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
5891 mutex_init(&dev->mode_config.idr_mutex);
5892 mutex_init(&dev->mode_config.fb_lock);
5893 mutex_init(&dev->mode_config.blob_lock);
5894 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5895 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5896 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5897 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5898 INIT_LIST_HEAD(&dev->mode_config.property_list);
5899 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5900 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5901 idr_init(&dev->mode_config.crtc_idr);
5902 idr_init(&dev->mode_config.tile_idr);
5903 ida_init(&dev->mode_config.connector_ida);
5905 drm_modeset_lock_all(dev);
5906 drm_mode_create_standard_properties(dev);
5907 drm_modeset_unlock_all(dev);
5909 /* Just to be sure */
5910 dev->mode_config.num_fb = 0;
5911 dev->mode_config.num_connector = 0;
5912 dev->mode_config.num_crtc = 0;
5913 dev->mode_config.num_encoder = 0;
5914 dev->mode_config.num_overlay_plane = 0;
5915 dev->mode_config.num_total_plane = 0;
5917 EXPORT_SYMBOL(drm_mode_config_init);
5920 * drm_mode_config_cleanup - free up DRM mode_config info
5923 * Free up all the connectors and CRTCs associated with this DRM device, then
5924 * free up the framebuffers and associated buffer objects.
5926 * Note that since this /should/ happen single-threaded at driver/device
5927 * teardown time, no locking is required. It's the driver's job to ensure that
5928 * this guarantee actually holds true.
5930 * FIXME: cleanup any dangling user buffer objects too
5932 void drm_mode_config_cleanup(struct drm_device *dev)
5934 struct drm_connector *connector, *ot;
5935 struct drm_crtc *crtc, *ct;
5936 struct drm_encoder *encoder, *enct;
5937 struct drm_framebuffer *fb, *fbt;
5938 struct drm_property *property, *pt;
5939 struct drm_property_blob *blob, *bt;
5940 struct drm_plane *plane, *plt;
5942 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5944 encoder->funcs->destroy(encoder);
5947 list_for_each_entry_safe(connector, ot,
5948 &dev->mode_config.connector_list, head) {
5949 connector->funcs->destroy(connector);
5952 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5954 drm_property_destroy(dev, property);
5957 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5959 plane->funcs->destroy(plane);
5962 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5963 crtc->funcs->destroy(crtc);
5966 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5968 drm_property_unreference_blob(blob);
5972 * Single-threaded teardown context, so it's not required to grab the
5973 * fb_lock to protect against concurrent fb_list access. Contrary, it
5974 * would actually deadlock with the drm_framebuffer_cleanup function.
5976 * Also, if there are any framebuffers left, that's a driver leak now,
5977 * so politely WARN about this.
5979 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5980 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5981 drm_framebuffer_free(&fb->refcount);
5984 ida_destroy(&dev->mode_config.connector_ida);
5985 idr_destroy(&dev->mode_config.tile_idr);
5986 idr_destroy(&dev->mode_config.crtc_idr);
5987 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
5989 EXPORT_SYMBOL(drm_mode_config_cleanup);
5991 struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5992 unsigned int supported_rotations)
5994 static const struct drm_prop_enum_list props[] = {
5995 { DRM_ROTATE_0, "rotate-0" },
5996 { DRM_ROTATE_90, "rotate-90" },
5997 { DRM_ROTATE_180, "rotate-180" },
5998 { DRM_ROTATE_270, "rotate-270" },
5999 { DRM_REFLECT_X, "reflect-x" },
6000 { DRM_REFLECT_Y, "reflect-y" },
6003 return drm_property_create_bitmask(dev, 0, "rotation",
6004 props, ARRAY_SIZE(props),
6005 supported_rotations);
6007 EXPORT_SYMBOL(drm_mode_create_rotation_property);
6012 * Tile groups are used to represent tiled monitors with a unique
6013 * integer identifier. Tiled monitors using DisplayID v1.3 have
6014 * a unique 8-byte handle, we store this in a tile group, so we
6015 * have a common identifier for all tiles in a monitor group.
6017 static void drm_tile_group_free(struct kref *kref)
6019 struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
6020 struct drm_device *dev = tg->dev;
6021 mutex_lock(&dev->mode_config.idr_mutex);
6022 idr_remove(&dev->mode_config.tile_idr, tg->id);
6023 mutex_unlock(&dev->mode_config.idr_mutex);
6028 * drm_mode_put_tile_group - drop a reference to a tile group.
6030 * @tg: tile group to drop reference to.
6032 * drop reference to tile group and free if 0.
6034 void drm_mode_put_tile_group(struct drm_device *dev,
6035 struct drm_tile_group *tg)
6037 kref_put(&tg->refcount, drm_tile_group_free);
6041 * drm_mode_get_tile_group - get a reference to an existing tile group
6043 * @topology: 8-bytes unique per monitor.
6045 * Use the unique bytes to get a reference to an existing tile group.
6048 * tile group or NULL if not found.
6050 struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
6053 struct drm_tile_group *tg;
6055 mutex_lock(&dev->mode_config.idr_mutex);
6056 idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
6057 if (!memcmp(tg->group_data, topology, 8)) {
6058 if (!kref_get_unless_zero(&tg->refcount))
6060 mutex_unlock(&dev->mode_config.idr_mutex);
6064 mutex_unlock(&dev->mode_config.idr_mutex);
6067 EXPORT_SYMBOL(drm_mode_get_tile_group);
6070 * drm_mode_create_tile_group - create a tile group from a displayid description
6072 * @topology: 8-bytes unique per monitor.
6074 * Create a tile group for the unique monitor, and get a unique
6075 * identifier for the tile group.
6078 * new tile group or error.
6080 struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
6083 struct drm_tile_group *tg;
6086 tg = kzalloc(sizeof(*tg), GFP_KERNEL);
6088 return ERR_PTR(-ENOMEM);
6090 kref_init(&tg->refcount);
6091 memcpy(tg->group_data, topology, 8);
6094 mutex_lock(&dev->mode_config.idr_mutex);
6095 ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
6103 mutex_unlock(&dev->mode_config.idr_mutex);
6106 EXPORT_SYMBOL(drm_mode_create_tile_group);