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_unregister - free a modeset identifer
328 * @object: object to free
330 * Free @id from @dev's unique identifier pool.
331 * This function can be called multiple times, and guards against
333 * These modeset identifiers are _not_ reference counted. Hence don't use this
334 * for reference counted modeset objects like framebuffers.
336 void drm_mode_object_unregister(struct drm_device *dev,
337 struct drm_mode_object *object)
339 mutex_lock(&dev->mode_config.idr_mutex);
341 idr_remove(&dev->mode_config.crtc_idr, object->id);
344 mutex_unlock(&dev->mode_config.idr_mutex);
347 static struct drm_mode_object *_object_find(struct drm_device *dev,
348 uint32_t id, uint32_t type)
350 struct drm_mode_object *obj = NULL;
352 mutex_lock(&dev->mode_config.idr_mutex);
353 obj = idr_find(&dev->mode_config.crtc_idr, id);
354 if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
356 if (obj && obj->id != id)
358 /* don't leak out unref'd fb's */
360 (obj->type == DRM_MODE_OBJECT_FB ||
361 obj->type == DRM_MODE_OBJECT_BLOB))
363 mutex_unlock(&dev->mode_config.idr_mutex);
369 * drm_mode_object_find - look up a drm object with static lifetime
371 * @id: id of the mode object
372 * @type: type of the mode object
374 * Note that framebuffers cannot be looked up with this functions - since those
375 * are reference counted, they need special treatment. Even with
376 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
377 * rather than WARN_ON()).
379 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
380 uint32_t id, uint32_t type)
382 struct drm_mode_object *obj = NULL;
384 /* Framebuffers are reference counted and need their own lookup
386 WARN_ON(type == DRM_MODE_OBJECT_FB || type == DRM_MODE_OBJECT_BLOB);
387 obj = _object_find(dev, id, type);
390 EXPORT_SYMBOL(drm_mode_object_find);
392 static void drm_framebuffer_free(struct kref *kref)
394 struct drm_framebuffer *fb =
395 container_of(kref, struct drm_framebuffer, refcount);
396 struct drm_device *dev = fb->dev;
399 * The lookup idr holds a weak reference, which has not necessarily been
400 * removed at this point. Check for that.
402 mutex_lock(&dev->mode_config.fb_lock);
403 drm_mode_object_unregister(dev, &fb->base);
404 mutex_unlock(&dev->mode_config.fb_lock);
406 fb->funcs->destroy(fb);
410 * drm_framebuffer_init - initialize a framebuffer
412 * @fb: framebuffer to be initialized
413 * @funcs: ... with these functions
415 * Allocates an ID for the framebuffer's parent mode object, sets its mode
416 * functions & device file and adds it to the master fd list.
419 * This functions publishes the fb and makes it available for concurrent access
420 * by other users. Which means by this point the fb _must_ be fully set up -
421 * since all the fb attributes are invariant over its lifetime, no further
422 * locking but only correct reference counting is required.
425 * Zero on success, error code on failure.
427 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
428 const struct drm_framebuffer_funcs *funcs)
432 mutex_lock(&dev->mode_config.fb_lock);
433 kref_init(&fb->refcount);
434 INIT_LIST_HEAD(&fb->filp_head);
438 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
442 dev->mode_config.num_fb++;
443 list_add(&fb->head, &dev->mode_config.fb_list);
445 mutex_unlock(&dev->mode_config.fb_lock);
449 EXPORT_SYMBOL(drm_framebuffer_init);
451 static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
454 struct drm_mode_object *obj = NULL;
455 struct drm_framebuffer *fb;
457 mutex_lock(&dev->mode_config.idr_mutex);
458 obj = idr_find(&dev->mode_config.crtc_idr, id);
459 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
463 mutex_unlock(&dev->mode_config.idr_mutex);
469 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
471 * @id: id of the fb object
473 * If successful, this grabs an additional reference to the framebuffer -
474 * callers need to make sure to eventually unreference the returned framebuffer
475 * again, using @drm_framebuffer_unreference.
477 struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
480 struct drm_framebuffer *fb;
482 mutex_lock(&dev->mode_config.fb_lock);
483 fb = __drm_framebuffer_lookup(dev, id);
485 if (!kref_get_unless_zero(&fb->refcount))
488 mutex_unlock(&dev->mode_config.fb_lock);
492 EXPORT_SYMBOL(drm_framebuffer_lookup);
495 * drm_framebuffer_unreference - unref a framebuffer
496 * @fb: framebuffer to unref
498 * This functions decrements the fb's refcount and frees it if it drops to zero.
500 void drm_framebuffer_unreference(struct drm_framebuffer *fb)
502 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
503 kref_put(&fb->refcount, drm_framebuffer_free);
505 EXPORT_SYMBOL(drm_framebuffer_unreference);
508 * drm_framebuffer_reference - incr the fb refcnt
511 * This functions increments the fb's refcount.
513 void drm_framebuffer_reference(struct drm_framebuffer *fb)
515 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
516 kref_get(&fb->refcount);
518 EXPORT_SYMBOL(drm_framebuffer_reference);
521 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
522 * @fb: fb to unregister
524 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
525 * those used for fbdev. Note that the caller must hold a reference of it's own,
526 * i.e. the object may not be destroyed through this call (since it'll lead to a
527 * locking inversion).
529 void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
531 struct drm_device *dev;
538 mutex_lock(&dev->mode_config.fb_lock);
539 /* Mark fb as reaped and drop idr ref. */
540 drm_mode_object_unregister(dev, &fb->base);
541 mutex_unlock(&dev->mode_config.fb_lock);
543 EXPORT_SYMBOL(drm_framebuffer_unregister_private);
546 * drm_framebuffer_cleanup - remove a framebuffer object
547 * @fb: framebuffer to remove
549 * Cleanup framebuffer. This function is intended to be used from the drivers
550 * ->destroy callback. It can also be used to clean up driver private
551 * framebuffers embedded into a larger structure.
553 * Note that this function does not remove the fb from active usuage - if it is
554 * still used anywhere, hilarity can ensue since userspace could call getfb on
555 * the id and get back -EINVAL. Obviously no concern at driver unload time.
557 * Also, the framebuffer will not be removed from the lookup idr - for
558 * user-created framebuffers this will happen in in the rmfb ioctl. For
559 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
560 * drm_framebuffer_unregister_private.
562 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
564 struct drm_device *dev = fb->dev;
566 mutex_lock(&dev->mode_config.fb_lock);
568 dev->mode_config.num_fb--;
569 mutex_unlock(&dev->mode_config.fb_lock);
571 EXPORT_SYMBOL(drm_framebuffer_cleanup);
574 * drm_framebuffer_remove - remove and unreference a framebuffer object
575 * @fb: framebuffer to remove
577 * Scans all the CRTCs and planes in @dev's mode_config. If they're
578 * using @fb, removes it, setting it to NULL. Then drops the reference to the
579 * passed-in framebuffer. Might take the modeset locks.
581 * Note that this function optimizes the cleanup away if the caller holds the
582 * last reference to the framebuffer. It is also guaranteed to not take the
583 * modeset locks in this case.
585 void drm_framebuffer_remove(struct drm_framebuffer *fb)
587 struct drm_device *dev;
588 struct drm_crtc *crtc;
589 struct drm_plane *plane;
590 struct drm_mode_set set;
598 WARN_ON(!list_empty(&fb->filp_head));
601 * drm ABI mandates that we remove any deleted framebuffers from active
602 * useage. But since most sane clients only remove framebuffers they no
603 * longer need, try to optimize this away.
605 * Since we're holding a reference ourselves, observing a refcount of 1
606 * means that we're the last holder and can skip it. Also, the refcount
607 * can never increase from 1 again, so we don't need any barriers or
610 * Note that userspace could try to race with use and instate a new
611 * usage _after_ we've cleared all current ones. End result will be an
612 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
615 if (drm_framebuffer_read_refcount(fb) > 1) {
616 drm_modeset_lock_all(dev);
617 /* remove from any CRTC */
618 drm_for_each_crtc(crtc, dev) {
619 if (crtc->primary->fb == fb) {
620 /* should turn off the crtc */
621 memset(&set, 0, sizeof(struct drm_mode_set));
624 ret = drm_mode_set_config_internal(&set);
626 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
630 drm_for_each_plane(plane, dev) {
632 drm_plane_force_disable(plane);
634 drm_modeset_unlock_all(dev);
637 drm_framebuffer_unreference(fb);
639 EXPORT_SYMBOL(drm_framebuffer_remove);
641 DEFINE_WW_CLASS(crtc_ww_class);
643 static unsigned int drm_num_crtcs(struct drm_device *dev)
645 unsigned int num = 0;
646 struct drm_crtc *tmp;
648 drm_for_each_crtc(tmp, dev) {
656 * drm_crtc_init_with_planes - Initialise a new CRTC object with
657 * specified primary and cursor planes.
659 * @crtc: CRTC object to init
660 * @primary: Primary plane for CRTC
661 * @cursor: Cursor plane for CRTC
662 * @funcs: callbacks for the new CRTC
663 * @name: printf style format string for the CRTC name, or NULL for default name
665 * Inits a new object created as base part of a driver crtc object.
668 * Zero on success, error code on failure.
670 int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
671 struct drm_plane *primary,
672 struct drm_plane *cursor,
673 const struct drm_crtc_funcs *funcs,
674 const char *name, ...)
676 struct drm_mode_config *config = &dev->mode_config;
679 WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY);
680 WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR);
685 drm_modeset_lock_init(&crtc->mutex);
686 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
694 crtc->name = kvasprintf(GFP_KERNEL, name, ap);
697 crtc->name = kasprintf(GFP_KERNEL, "crtc-%d",
701 drm_mode_object_unregister(dev, &crtc->base);
705 crtc->base.properties = &crtc->properties;
707 list_add_tail(&crtc->head, &config->crtc_list);
710 crtc->primary = primary;
711 crtc->cursor = cursor;
713 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
715 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
717 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
718 drm_object_attach_property(&crtc->base, config->prop_active, 0);
719 drm_object_attach_property(&crtc->base, config->prop_mode_id, 0);
724 EXPORT_SYMBOL(drm_crtc_init_with_planes);
727 * drm_crtc_cleanup - Clean up the core crtc usage
728 * @crtc: CRTC to cleanup
730 * This function cleans up @crtc and removes it from the DRM mode setting
731 * core. Note that the function does *not* free the crtc structure itself,
732 * this is the responsibility of the caller.
734 void drm_crtc_cleanup(struct drm_crtc *crtc)
736 struct drm_device *dev = crtc->dev;
738 kfree(crtc->gamma_store);
739 crtc->gamma_store = NULL;
741 drm_modeset_lock_fini(&crtc->mutex);
743 drm_mode_object_unregister(dev, &crtc->base);
744 list_del(&crtc->head);
745 dev->mode_config.num_crtc--;
747 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
748 if (crtc->state && crtc->funcs->atomic_destroy_state)
749 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
753 memset(crtc, 0, sizeof(*crtc));
755 EXPORT_SYMBOL(drm_crtc_cleanup);
758 * drm_crtc_index - find the index of a registered CRTC
759 * @crtc: CRTC to find index for
761 * Given a registered CRTC, return the index of that CRTC within a DRM
762 * device's list of CRTCs.
764 unsigned int drm_crtc_index(struct drm_crtc *crtc)
766 unsigned int index = 0;
767 struct drm_crtc *tmp;
769 drm_for_each_crtc(tmp, crtc->dev) {
778 EXPORT_SYMBOL(drm_crtc_index);
781 * drm_mode_remove - remove and free a mode
782 * @connector: connector list to modify
783 * @mode: mode to remove
785 * Remove @mode from @connector's mode list, then free it.
787 static void drm_mode_remove(struct drm_connector *connector,
788 struct drm_display_mode *mode)
790 list_del(&mode->head);
791 drm_mode_destroy(connector->dev, mode);
795 * drm_display_info_set_bus_formats - set the supported bus formats
796 * @info: display info to store bus formats in
797 * @formats: array containing the supported bus formats
798 * @num_formats: the number of entries in the fmts array
800 * Store the supported bus formats in display info structure.
801 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
802 * a full list of available formats.
804 int drm_display_info_set_bus_formats(struct drm_display_info *info,
806 unsigned int num_formats)
810 if (!formats && num_formats)
813 if (formats && num_formats) {
814 fmts = kmemdup(formats, sizeof(*formats) * num_formats,
820 kfree(info->bus_formats);
821 info->bus_formats = fmts;
822 info->num_bus_formats = num_formats;
826 EXPORT_SYMBOL(drm_display_info_set_bus_formats);
829 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
830 * @connector: connector to quwery
832 * The kernel supports per-connector configration of its consoles through
833 * use of the video= parameter. This function parses that option and
834 * extracts the user's specified mode (or enable/disable status) for a
835 * particular connector. This is typically only used during the early fbdev
838 static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
840 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
843 if (fb_get_options(connector->name, &option))
846 if (!drm_mode_parse_command_line_for_connector(option,
854 switch (mode->force) {
858 case DRM_FORCE_ON_DIGITAL:
867 DRM_INFO("forcing %s connector %s\n", connector->name, s);
868 connector->force = mode->force;
871 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
873 mode->xres, mode->yres,
874 mode->refresh_specified ? mode->refresh : 60,
875 mode->rb ? " reduced blanking" : "",
876 mode->margins ? " with margins" : "",
877 mode->interlace ? " interlaced" : "");
881 * drm_connector_init - Init a preallocated connector
883 * @connector: the connector to init
884 * @funcs: callbacks for this connector
885 * @connector_type: user visible type of the connector
887 * Initialises a preallocated connector. Connectors should be
888 * subclassed as part of driver connector objects.
891 * Zero on success, error code on failure.
893 int drm_connector_init(struct drm_device *dev,
894 struct drm_connector *connector,
895 const struct drm_connector_funcs *funcs,
898 struct drm_mode_config *config = &dev->mode_config;
900 struct ida *connector_ida =
901 &drm_connector_enum_list[connector_type].ida;
903 drm_modeset_lock_all(dev);
905 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false);
909 connector->base.properties = &connector->properties;
910 connector->dev = dev;
911 connector->funcs = funcs;
913 connector->connector_id = ida_simple_get(&config->connector_ida, 0, 0, GFP_KERNEL);
914 if (connector->connector_id < 0) {
915 ret = connector->connector_id;
919 connector->connector_type = connector_type;
920 connector->connector_type_id =
921 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
922 if (connector->connector_type_id < 0) {
923 ret = connector->connector_type_id;
927 kasprintf(GFP_KERNEL, "%s-%d",
928 drm_connector_enum_list[connector_type].name,
929 connector->connector_type_id);
930 if (!connector->name) {
932 goto out_put_type_id;
935 INIT_LIST_HEAD(&connector->probed_modes);
936 INIT_LIST_HEAD(&connector->modes);
937 connector->edid_blob_ptr = NULL;
938 connector->status = connector_status_unknown;
940 drm_connector_get_cmdline_mode(connector);
942 /* We should add connectors at the end to avoid upsetting the connector
944 list_add_tail(&connector->head, &config->connector_list);
945 config->num_connector++;
947 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
948 drm_object_attach_property(&connector->base,
949 config->edid_property,
952 drm_object_attach_property(&connector->base,
953 config->dpms_property, 0);
955 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
956 drm_object_attach_property(&connector->base, config->prop_crtc_id, 0);
959 connector->debugfs_entry = NULL;
962 ida_remove(connector_ida, connector->connector_type_id);
965 ida_remove(&config->connector_ida, connector->connector_id);
968 drm_mode_object_unregister(dev, &connector->base);
971 drm_modeset_unlock_all(dev);
975 EXPORT_SYMBOL(drm_connector_init);
978 * drm_connector_cleanup - cleans up an initialised connector
979 * @connector: connector to cleanup
981 * Cleans up the connector but doesn't free the object.
983 void drm_connector_cleanup(struct drm_connector *connector)
985 struct drm_device *dev = connector->dev;
986 struct drm_display_mode *mode, *t;
988 if (connector->tile_group) {
989 drm_mode_put_tile_group(dev, connector->tile_group);
990 connector->tile_group = NULL;
993 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
994 drm_mode_remove(connector, mode);
996 list_for_each_entry_safe(mode, t, &connector->modes, head)
997 drm_mode_remove(connector, mode);
999 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
1000 connector->connector_type_id);
1002 ida_remove(&dev->mode_config.connector_ida,
1003 connector->connector_id);
1005 kfree(connector->display_info.bus_formats);
1006 drm_mode_object_unregister(dev, &connector->base);
1007 kfree(connector->name);
1008 connector->name = NULL;
1009 list_del(&connector->head);
1010 dev->mode_config.num_connector--;
1012 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
1013 if (connector->state && connector->funcs->atomic_destroy_state)
1014 connector->funcs->atomic_destroy_state(connector,
1017 memset(connector, 0, sizeof(*connector));
1019 EXPORT_SYMBOL(drm_connector_cleanup);
1022 * drm_connector_register - register a connector
1023 * @connector: the connector to register
1025 * Register userspace interfaces for a connector
1028 * Zero on success, error code on failure.
1030 int drm_connector_register(struct drm_connector *connector)
1034 drm_mode_object_register(connector->dev, &connector->base);
1036 ret = drm_sysfs_connector_add(connector);
1040 ret = drm_debugfs_connector_add(connector);
1042 drm_sysfs_connector_remove(connector);
1048 EXPORT_SYMBOL(drm_connector_register);
1051 * drm_connector_unregister - unregister a connector
1052 * @connector: the connector to unregister
1054 * Unregister userspace interfaces for a connector
1056 void drm_connector_unregister(struct drm_connector *connector)
1058 drm_sysfs_connector_remove(connector);
1059 drm_debugfs_connector_remove(connector);
1061 EXPORT_SYMBOL(drm_connector_unregister);
1064 * drm_connector_register_all - register all connectors
1067 * This function registers all connectors in sysfs and other places so that
1068 * userspace can start to access them. Drivers can call it after calling
1069 * drm_dev_register() to complete the device registration, if they don't call
1070 * drm_connector_register() on each connector individually.
1072 * When a device is unplugged and should be removed from userspace access,
1073 * call drm_connector_unregister_all(), which is the inverse of this
1077 * Zero on success, error code on failure.
1079 int drm_connector_register_all(struct drm_device *dev)
1081 struct drm_connector *connector;
1084 mutex_lock(&dev->mode_config.mutex);
1086 drm_for_each_connector(connector, dev) {
1087 ret = drm_connector_register(connector);
1092 mutex_unlock(&dev->mode_config.mutex);
1097 mutex_unlock(&dev->mode_config.mutex);
1098 drm_connector_unregister_all(dev);
1101 EXPORT_SYMBOL(drm_connector_register_all);
1104 * drm_connector_unregister_all - unregister connector userspace interfaces
1107 * This functions unregisters all connectors from sysfs and other places so
1108 * that userspace can no longer access them. Drivers should call this as the
1109 * first step tearing down the device instace, or when the underlying
1110 * physical device disappeared (e.g. USB unplug), right before calling
1111 * drm_dev_unregister().
1113 void drm_connector_unregister_all(struct drm_device *dev)
1115 struct drm_connector *connector;
1117 /* FIXME: taking the mode config mutex ends up in a clash with sysfs */
1118 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1119 drm_connector_unregister(connector);
1121 EXPORT_SYMBOL(drm_connector_unregister_all);
1124 * drm_encoder_init - Init a preallocated encoder
1126 * @encoder: the encoder to init
1127 * @funcs: callbacks for this encoder
1128 * @encoder_type: user visible type of the encoder
1129 * @name: printf style format string for the encoder name, or NULL for default name
1131 * Initialises a preallocated encoder. Encoder should be
1132 * subclassed as part of driver encoder objects.
1135 * Zero on success, error code on failure.
1137 int drm_encoder_init(struct drm_device *dev,
1138 struct drm_encoder *encoder,
1139 const struct drm_encoder_funcs *funcs,
1140 int encoder_type, const char *name, ...)
1144 drm_modeset_lock_all(dev);
1146 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1151 encoder->encoder_type = encoder_type;
1152 encoder->funcs = funcs;
1157 encoder->name = kvasprintf(GFP_KERNEL, name, ap);
1160 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1161 drm_encoder_enum_list[encoder_type].name,
1164 if (!encoder->name) {
1169 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1170 dev->mode_config.num_encoder++;
1174 drm_mode_object_unregister(dev, &encoder->base);
1177 drm_modeset_unlock_all(dev);
1181 EXPORT_SYMBOL(drm_encoder_init);
1184 * drm_encoder_index - find the index of a registered encoder
1185 * @encoder: encoder to find index for
1187 * Given a registered encoder, return the index of that encoder within a DRM
1188 * device's list of encoders.
1190 unsigned int drm_encoder_index(struct drm_encoder *encoder)
1192 unsigned int index = 0;
1193 struct drm_encoder *tmp;
1195 drm_for_each_encoder(tmp, encoder->dev) {
1204 EXPORT_SYMBOL(drm_encoder_index);
1207 * drm_encoder_cleanup - cleans up an initialised encoder
1208 * @encoder: encoder to cleanup
1210 * Cleans up the encoder but doesn't free the object.
1212 void drm_encoder_cleanup(struct drm_encoder *encoder)
1214 struct drm_device *dev = encoder->dev;
1216 drm_modeset_lock_all(dev);
1217 drm_mode_object_unregister(dev, &encoder->base);
1218 kfree(encoder->name);
1219 list_del(&encoder->head);
1220 dev->mode_config.num_encoder--;
1221 drm_modeset_unlock_all(dev);
1223 memset(encoder, 0, sizeof(*encoder));
1225 EXPORT_SYMBOL(drm_encoder_cleanup);
1227 static unsigned int drm_num_planes(struct drm_device *dev)
1229 unsigned int num = 0;
1230 struct drm_plane *tmp;
1232 drm_for_each_plane(tmp, dev) {
1240 * drm_universal_plane_init - Initialize a new universal plane object
1242 * @plane: plane object to init
1243 * @possible_crtcs: bitmask of possible CRTCs
1244 * @funcs: callbacks for the new plane
1245 * @formats: array of supported formats (%DRM_FORMAT_*)
1246 * @format_count: number of elements in @formats
1247 * @type: type of plane (overlay, primary, cursor)
1248 * @name: printf style format string for the plane name, or NULL for default name
1250 * Initializes a plane object of type @type.
1253 * Zero on success, error code on failure.
1255 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1256 unsigned long possible_crtcs,
1257 const struct drm_plane_funcs *funcs,
1258 const uint32_t *formats, unsigned int format_count,
1259 enum drm_plane_type type,
1260 const char *name, ...)
1262 struct drm_mode_config *config = &dev->mode_config;
1265 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1269 drm_modeset_lock_init(&plane->mutex);
1271 plane->base.properties = &plane->properties;
1273 plane->funcs = funcs;
1274 plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
1276 if (!plane->format_types) {
1277 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1278 drm_mode_object_unregister(dev, &plane->base);
1286 plane->name = kvasprintf(GFP_KERNEL, name, ap);
1289 plane->name = kasprintf(GFP_KERNEL, "plane-%d",
1290 drm_num_planes(dev));
1293 kfree(plane->format_types);
1294 drm_mode_object_unregister(dev, &plane->base);
1298 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1299 plane->format_count = format_count;
1300 plane->possible_crtcs = possible_crtcs;
1303 list_add_tail(&plane->head, &config->plane_list);
1304 config->num_total_plane++;
1305 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1306 config->num_overlay_plane++;
1308 drm_object_attach_property(&plane->base,
1309 config->plane_type_property,
1312 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
1313 drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
1314 drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
1315 drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
1316 drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
1317 drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
1318 drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
1319 drm_object_attach_property(&plane->base, config->prop_src_x, 0);
1320 drm_object_attach_property(&plane->base, config->prop_src_y, 0);
1321 drm_object_attach_property(&plane->base, config->prop_src_w, 0);
1322 drm_object_attach_property(&plane->base, config->prop_src_h, 0);
1327 EXPORT_SYMBOL(drm_universal_plane_init);
1330 * drm_plane_init - Initialize a legacy plane
1332 * @plane: plane object to init
1333 * @possible_crtcs: bitmask of possible CRTCs
1334 * @funcs: callbacks for the new plane
1335 * @formats: array of supported formats (%DRM_FORMAT_*)
1336 * @format_count: number of elements in @formats
1337 * @is_primary: plane type (primary vs overlay)
1339 * Legacy API to initialize a DRM plane.
1341 * New drivers should call drm_universal_plane_init() instead.
1344 * Zero on success, error code on failure.
1346 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1347 unsigned long possible_crtcs,
1348 const struct drm_plane_funcs *funcs,
1349 const uint32_t *formats, unsigned int format_count,
1352 enum drm_plane_type type;
1354 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1355 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1356 formats, format_count, type, NULL);
1358 EXPORT_SYMBOL(drm_plane_init);
1361 * drm_plane_cleanup - Clean up the core plane usage
1362 * @plane: plane to cleanup
1364 * This function cleans up @plane and removes it from the DRM mode setting
1365 * core. Note that the function does *not* free the plane structure itself,
1366 * this is the responsibility of the caller.
1368 void drm_plane_cleanup(struct drm_plane *plane)
1370 struct drm_device *dev = plane->dev;
1372 drm_modeset_lock_all(dev);
1373 kfree(plane->format_types);
1374 drm_mode_object_unregister(dev, &plane->base);
1376 BUG_ON(list_empty(&plane->head));
1378 list_del(&plane->head);
1379 dev->mode_config.num_total_plane--;
1380 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1381 dev->mode_config.num_overlay_plane--;
1382 drm_modeset_unlock_all(dev);
1384 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1385 if (plane->state && plane->funcs->atomic_destroy_state)
1386 plane->funcs->atomic_destroy_state(plane, plane->state);
1390 memset(plane, 0, sizeof(*plane));
1392 EXPORT_SYMBOL(drm_plane_cleanup);
1395 * drm_plane_index - find the index of a registered plane
1396 * @plane: plane to find index for
1398 * Given a registered plane, return the index of that CRTC within a DRM
1399 * device's list of planes.
1401 unsigned int drm_plane_index(struct drm_plane *plane)
1403 unsigned int index = 0;
1404 struct drm_plane *tmp;
1406 drm_for_each_plane(tmp, plane->dev) {
1415 EXPORT_SYMBOL(drm_plane_index);
1418 * drm_plane_from_index - find the registered plane at an index
1420 * @idx: index of registered plane to find for
1422 * Given a plane index, return the registered plane from DRM device's
1423 * list of planes with matching index.
1426 drm_plane_from_index(struct drm_device *dev, int idx)
1428 struct drm_plane *plane;
1431 drm_for_each_plane(plane, dev) {
1438 EXPORT_SYMBOL(drm_plane_from_index);
1441 * drm_plane_force_disable - Forcibly disable a plane
1442 * @plane: plane to disable
1444 * Forces the plane to be disabled.
1446 * Used when the plane's current framebuffer is destroyed,
1447 * and when restoring fbdev mode.
1449 void drm_plane_force_disable(struct drm_plane *plane)
1456 plane->old_fb = plane->fb;
1457 ret = plane->funcs->disable_plane(plane);
1459 DRM_ERROR("failed to disable plane with busy fb\n");
1460 plane->old_fb = NULL;
1463 /* disconnect the plane from the fb and crtc: */
1464 drm_framebuffer_unreference(plane->old_fb);
1465 plane->old_fb = NULL;
1469 EXPORT_SYMBOL(drm_plane_force_disable);
1471 static int drm_mode_create_standard_properties(struct drm_device *dev)
1473 struct drm_property *prop;
1476 * Standard properties (apply to all connectors)
1478 prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1479 DRM_MODE_PROP_IMMUTABLE,
1483 dev->mode_config.edid_property = prop;
1485 prop = drm_property_create_enum(dev, 0,
1486 "DPMS", drm_dpms_enum_list,
1487 ARRAY_SIZE(drm_dpms_enum_list));
1490 dev->mode_config.dpms_property = prop;
1492 prop = drm_property_create(dev,
1493 DRM_MODE_PROP_BLOB |
1494 DRM_MODE_PROP_IMMUTABLE,
1498 dev->mode_config.path_property = prop;
1500 prop = drm_property_create(dev,
1501 DRM_MODE_PROP_BLOB |
1502 DRM_MODE_PROP_IMMUTABLE,
1506 dev->mode_config.tile_property = prop;
1508 prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1509 "type", drm_plane_type_enum_list,
1510 ARRAY_SIZE(drm_plane_type_enum_list));
1513 dev->mode_config.plane_type_property = prop;
1515 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1516 "SRC_X", 0, UINT_MAX);
1519 dev->mode_config.prop_src_x = prop;
1521 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1522 "SRC_Y", 0, UINT_MAX);
1525 dev->mode_config.prop_src_y = prop;
1527 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1528 "SRC_W", 0, UINT_MAX);
1531 dev->mode_config.prop_src_w = prop;
1533 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1534 "SRC_H", 0, UINT_MAX);
1537 dev->mode_config.prop_src_h = prop;
1539 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1540 "CRTC_X", INT_MIN, INT_MAX);
1543 dev->mode_config.prop_crtc_x = prop;
1545 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1546 "CRTC_Y", INT_MIN, INT_MAX);
1549 dev->mode_config.prop_crtc_y = prop;
1551 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1552 "CRTC_W", 0, INT_MAX);
1555 dev->mode_config.prop_crtc_w = prop;
1557 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1558 "CRTC_H", 0, INT_MAX);
1561 dev->mode_config.prop_crtc_h = prop;
1563 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1564 "FB_ID", DRM_MODE_OBJECT_FB);
1567 dev->mode_config.prop_fb_id = prop;
1569 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1570 "CRTC_ID", DRM_MODE_OBJECT_CRTC);
1573 dev->mode_config.prop_crtc_id = prop;
1575 prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
1579 dev->mode_config.prop_active = prop;
1581 prop = drm_property_create(dev,
1582 DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB,
1586 dev->mode_config.prop_mode_id = prop;
1588 prop = drm_property_create(dev,
1593 dev->mode_config.degamma_lut_property = prop;
1595 prop = drm_property_create_range(dev,
1596 DRM_MODE_PROP_IMMUTABLE,
1597 "DEGAMMA_LUT_SIZE", 0, UINT_MAX);
1600 dev->mode_config.degamma_lut_size_property = prop;
1602 prop = drm_property_create(dev,
1607 dev->mode_config.ctm_property = prop;
1609 prop = drm_property_create(dev,
1614 dev->mode_config.gamma_lut_property = prop;
1616 prop = drm_property_create_range(dev,
1617 DRM_MODE_PROP_IMMUTABLE,
1618 "GAMMA_LUT_SIZE", 0, UINT_MAX);
1621 dev->mode_config.gamma_lut_size_property = prop;
1627 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1630 * Called by a driver the first time a DVI-I connector is made.
1632 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1634 struct drm_property *dvi_i_selector;
1635 struct drm_property *dvi_i_subconnector;
1637 if (dev->mode_config.dvi_i_select_subconnector_property)
1641 drm_property_create_enum(dev, 0,
1642 "select subconnector",
1643 drm_dvi_i_select_enum_list,
1644 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1645 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1647 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1649 drm_dvi_i_subconnector_enum_list,
1650 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1651 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1655 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1658 * drm_create_tv_properties - create TV specific connector properties
1660 * @num_modes: number of different TV formats (modes) supported
1661 * @modes: array of pointers to strings containing name of each format
1663 * Called by a driver's TV initialization routine, this function creates
1664 * the TV specific connector properties for a given device. Caller is
1665 * responsible for allocating a list of format names and passing them to
1668 int drm_mode_create_tv_properties(struct drm_device *dev,
1669 unsigned int num_modes,
1670 const char * const modes[])
1672 struct drm_property *tv_selector;
1673 struct drm_property *tv_subconnector;
1676 if (dev->mode_config.tv_select_subconnector_property)
1680 * Basic connector properties
1682 tv_selector = drm_property_create_enum(dev, 0,
1683 "select subconnector",
1684 drm_tv_select_enum_list,
1685 ARRAY_SIZE(drm_tv_select_enum_list));
1689 dev->mode_config.tv_select_subconnector_property = tv_selector;
1692 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1694 drm_tv_subconnector_enum_list,
1695 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1696 if (!tv_subconnector)
1698 dev->mode_config.tv_subconnector_property = tv_subconnector;
1701 * Other, TV specific properties: margins & TV modes.
1703 dev->mode_config.tv_left_margin_property =
1704 drm_property_create_range(dev, 0, "left margin", 0, 100);
1705 if (!dev->mode_config.tv_left_margin_property)
1708 dev->mode_config.tv_right_margin_property =
1709 drm_property_create_range(dev, 0, "right margin", 0, 100);
1710 if (!dev->mode_config.tv_right_margin_property)
1713 dev->mode_config.tv_top_margin_property =
1714 drm_property_create_range(dev, 0, "top margin", 0, 100);
1715 if (!dev->mode_config.tv_top_margin_property)
1718 dev->mode_config.tv_bottom_margin_property =
1719 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1720 if (!dev->mode_config.tv_bottom_margin_property)
1723 dev->mode_config.tv_mode_property =
1724 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1726 if (!dev->mode_config.tv_mode_property)
1729 for (i = 0; i < num_modes; i++)
1730 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1733 dev->mode_config.tv_brightness_property =
1734 drm_property_create_range(dev, 0, "brightness", 0, 100);
1735 if (!dev->mode_config.tv_brightness_property)
1738 dev->mode_config.tv_contrast_property =
1739 drm_property_create_range(dev, 0, "contrast", 0, 100);
1740 if (!dev->mode_config.tv_contrast_property)
1743 dev->mode_config.tv_flicker_reduction_property =
1744 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1745 if (!dev->mode_config.tv_flicker_reduction_property)
1748 dev->mode_config.tv_overscan_property =
1749 drm_property_create_range(dev, 0, "overscan", 0, 100);
1750 if (!dev->mode_config.tv_overscan_property)
1753 dev->mode_config.tv_saturation_property =
1754 drm_property_create_range(dev, 0, "saturation", 0, 100);
1755 if (!dev->mode_config.tv_saturation_property)
1758 dev->mode_config.tv_hue_property =
1759 drm_property_create_range(dev, 0, "hue", 0, 100);
1760 if (!dev->mode_config.tv_hue_property)
1767 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1770 * drm_mode_create_scaling_mode_property - create scaling mode property
1773 * Called by a driver the first time it's needed, must be attached to desired
1776 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1778 struct drm_property *scaling_mode;
1780 if (dev->mode_config.scaling_mode_property)
1784 drm_property_create_enum(dev, 0, "scaling mode",
1785 drm_scaling_mode_enum_list,
1786 ARRAY_SIZE(drm_scaling_mode_enum_list));
1788 dev->mode_config.scaling_mode_property = scaling_mode;
1792 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1795 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1798 * Called by a driver the first time it's needed, must be attached to desired
1802 * Zero on success, negative errno on failure.
1804 int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1806 if (dev->mode_config.aspect_ratio_property)
1809 dev->mode_config.aspect_ratio_property =
1810 drm_property_create_enum(dev, 0, "aspect ratio",
1811 drm_aspect_ratio_enum_list,
1812 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1814 if (dev->mode_config.aspect_ratio_property == NULL)
1819 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1822 * drm_mode_create_dirty_property - create dirty property
1825 * Called by a driver the first time it's needed, must be attached to desired
1828 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1830 struct drm_property *dirty_info;
1832 if (dev->mode_config.dirty_info_property)
1836 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1838 drm_dirty_info_enum_list,
1839 ARRAY_SIZE(drm_dirty_info_enum_list));
1840 dev->mode_config.dirty_info_property = dirty_info;
1844 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1847 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1850 * Create the the suggested x/y offset property for connectors.
1852 int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1854 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1857 dev->mode_config.suggested_x_property =
1858 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1860 dev->mode_config.suggested_y_property =
1861 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1863 if (dev->mode_config.suggested_x_property == NULL ||
1864 dev->mode_config.suggested_y_property == NULL)
1868 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1871 * drm_mode_getresources - get graphics configuration
1872 * @dev: drm device for the ioctl
1873 * @data: data pointer for the ioctl
1874 * @file_priv: drm file for the ioctl call
1876 * Construct a set of configuration description structures and return
1877 * them to the user, including CRTC, connector and framebuffer configuration.
1879 * Called by the user via ioctl.
1882 * Zero on success, negative errno on failure.
1884 int drm_mode_getresources(struct drm_device *dev, void *data,
1885 struct drm_file *file_priv)
1887 struct drm_mode_card_res *card_res = data;
1888 struct list_head *lh;
1889 struct drm_framebuffer *fb;
1890 struct drm_connector *connector;
1891 struct drm_crtc *crtc;
1892 struct drm_encoder *encoder;
1894 int connector_count = 0;
1897 int encoder_count = 0;
1899 uint32_t __user *fb_id;
1900 uint32_t __user *crtc_id;
1901 uint32_t __user *connector_id;
1902 uint32_t __user *encoder_id;
1904 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1908 mutex_lock(&file_priv->fbs_lock);
1910 * For the non-control nodes we need to limit the list of resources
1911 * by IDs in the group list for this node
1913 list_for_each(lh, &file_priv->fbs)
1916 /* handle this in 4 parts */
1918 if (card_res->count_fbs >= fb_count) {
1920 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1921 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1922 if (put_user(fb->base.id, fb_id + copied)) {
1923 mutex_unlock(&file_priv->fbs_lock);
1929 card_res->count_fbs = fb_count;
1930 mutex_unlock(&file_priv->fbs_lock);
1932 /* mode_config.mutex protects the connector list against e.g. DP MST
1933 * connector hot-adding. CRTC/Plane lists are invariant. */
1934 mutex_lock(&dev->mode_config.mutex);
1935 drm_for_each_crtc(crtc, dev)
1938 drm_for_each_connector(connector, dev)
1941 drm_for_each_encoder(encoder, dev)
1944 card_res->max_height = dev->mode_config.max_height;
1945 card_res->min_height = dev->mode_config.min_height;
1946 card_res->max_width = dev->mode_config.max_width;
1947 card_res->min_width = dev->mode_config.min_width;
1950 if (card_res->count_crtcs >= crtc_count) {
1952 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1953 drm_for_each_crtc(crtc, dev) {
1954 DRM_DEBUG_KMS("[CRTC:%d:%s]\n",
1955 crtc->base.id, crtc->name);
1956 if (put_user(crtc->base.id, crtc_id + copied)) {
1963 card_res->count_crtcs = crtc_count;
1966 if (card_res->count_encoders >= encoder_count) {
1968 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1969 drm_for_each_encoder(encoder, dev) {
1970 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1972 if (put_user(encoder->base.id, encoder_id +
1980 card_res->count_encoders = encoder_count;
1983 if (card_res->count_connectors >= connector_count) {
1985 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1986 drm_for_each_connector(connector, dev) {
1987 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1990 if (put_user(connector->base.id,
1991 connector_id + copied)) {
1998 card_res->count_connectors = connector_count;
2000 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
2001 card_res->count_connectors, card_res->count_encoders);
2004 mutex_unlock(&dev->mode_config.mutex);
2009 * drm_mode_getcrtc - get CRTC configuration
2010 * @dev: drm device for the ioctl
2011 * @data: data pointer for the ioctl
2012 * @file_priv: drm file for the ioctl call
2014 * Construct a CRTC configuration structure to return to the user.
2016 * Called by the user via ioctl.
2019 * Zero on success, negative errno on failure.
2021 int drm_mode_getcrtc(struct drm_device *dev,
2022 void *data, struct drm_file *file_priv)
2024 struct drm_mode_crtc *crtc_resp = data;
2025 struct drm_crtc *crtc;
2027 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2030 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
2034 drm_modeset_lock_crtc(crtc, crtc->primary);
2035 crtc_resp->gamma_size = crtc->gamma_size;
2036 if (crtc->primary->fb)
2037 crtc_resp->fb_id = crtc->primary->fb->base.id;
2039 crtc_resp->fb_id = 0;
2042 crtc_resp->x = crtc->primary->state->src_x >> 16;
2043 crtc_resp->y = crtc->primary->state->src_y >> 16;
2044 if (crtc->state->enable) {
2045 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode);
2046 crtc_resp->mode_valid = 1;
2049 crtc_resp->mode_valid = 0;
2052 crtc_resp->x = crtc->x;
2053 crtc_resp->y = crtc->y;
2054 if (crtc->enabled) {
2055 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode);
2056 crtc_resp->mode_valid = 1;
2059 crtc_resp->mode_valid = 0;
2062 drm_modeset_unlock_crtc(crtc);
2067 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
2068 const struct drm_file *file_priv)
2071 * If user-space hasn't configured the driver to expose the stereo 3D
2072 * modes, don't expose them.
2074 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
2080 static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
2082 /* For atomic drivers only state objects are synchronously updated and
2083 * protected by modeset locks, so check those first. */
2084 if (connector->state)
2085 return connector->state->best_encoder;
2086 return connector->encoder;
2089 /* helper for getconnector and getproperties ioctls */
2090 static int get_properties(struct drm_mode_object *obj, bool atomic,
2091 uint32_t __user *prop_ptr, uint64_t __user *prop_values,
2092 uint32_t *arg_count_props)
2097 props_count = obj->properties->count;
2099 props_count -= obj->properties->atomic_count;
2101 if ((*arg_count_props >= props_count) && props_count) {
2102 for (i = 0, copied = 0; copied < props_count; i++) {
2103 struct drm_property *prop = obj->properties->properties[i];
2106 if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
2109 ret = drm_object_property_get_value(obj, prop, &val);
2113 if (put_user(prop->base.id, prop_ptr + copied))
2116 if (put_user(val, prop_values + copied))
2122 *arg_count_props = props_count;
2128 * drm_mode_getconnector - get connector configuration
2129 * @dev: drm device for the ioctl
2130 * @data: data pointer for the ioctl
2131 * @file_priv: drm file for the ioctl call
2133 * Construct a connector configuration structure to return to the user.
2135 * Called by the user via ioctl.
2138 * Zero on success, negative errno on failure.
2140 int drm_mode_getconnector(struct drm_device *dev, void *data,
2141 struct drm_file *file_priv)
2143 struct drm_mode_get_connector *out_resp = data;
2144 struct drm_connector *connector;
2145 struct drm_encoder *encoder;
2146 struct drm_display_mode *mode;
2148 int encoders_count = 0;
2152 struct drm_mode_modeinfo u_mode;
2153 struct drm_mode_modeinfo __user *mode_ptr;
2154 uint32_t __user *encoder_ptr;
2156 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2159 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
2161 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
2163 mutex_lock(&dev->mode_config.mutex);
2165 connector = drm_connector_find(dev, out_resp->connector_id);
2171 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
2172 if (connector->encoder_ids[i] != 0)
2175 if (out_resp->count_modes == 0) {
2176 connector->funcs->fill_modes(connector,
2177 dev->mode_config.max_width,
2178 dev->mode_config.max_height);
2181 /* delayed so we get modes regardless of pre-fill_modes state */
2182 list_for_each_entry(mode, &connector->modes, head)
2183 if (drm_mode_expose_to_userspace(mode, file_priv))
2186 out_resp->connector_id = connector->base.id;
2187 out_resp->connector_type = connector->connector_type;
2188 out_resp->connector_type_id = connector->connector_type_id;
2189 out_resp->mm_width = connector->display_info.width_mm;
2190 out_resp->mm_height = connector->display_info.height_mm;
2191 out_resp->subpixel = connector->display_info.subpixel_order;
2192 out_resp->connection = connector->status;
2194 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2195 encoder = drm_connector_get_encoder(connector);
2197 out_resp->encoder_id = encoder->base.id;
2199 out_resp->encoder_id = 0;
2202 * This ioctl is called twice, once to determine how much space is
2203 * needed, and the 2nd time to fill it.
2205 if ((out_resp->count_modes >= mode_count) && mode_count) {
2207 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
2208 list_for_each_entry(mode, &connector->modes, head) {
2209 if (!drm_mode_expose_to_userspace(mode, file_priv))
2212 drm_mode_convert_to_umode(&u_mode, mode);
2213 if (copy_to_user(mode_ptr + copied,
2214 &u_mode, sizeof(u_mode))) {
2221 out_resp->count_modes = mode_count;
2223 ret = get_properties(&connector->base, file_priv->atomic,
2224 (uint32_t __user *)(unsigned long)(out_resp->props_ptr),
2225 (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr),
2226 &out_resp->count_props);
2230 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2232 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
2233 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2234 if (connector->encoder_ids[i] != 0) {
2235 if (put_user(connector->encoder_ids[i],
2236 encoder_ptr + copied)) {
2244 out_resp->count_encoders = encoders_count;
2247 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2250 mutex_unlock(&dev->mode_config.mutex);
2255 static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2257 struct drm_connector *connector;
2258 struct drm_device *dev = encoder->dev;
2259 bool uses_atomic = false;
2261 /* For atomic drivers only state objects are synchronously updated and
2262 * protected by modeset locks, so check those first. */
2263 drm_for_each_connector(connector, dev) {
2264 if (!connector->state)
2269 if (connector->state->best_encoder != encoder)
2272 return connector->state->crtc;
2275 /* Don't return stale data (e.g. pending async disable). */
2279 return encoder->crtc;
2283 * drm_mode_getencoder - get encoder configuration
2284 * @dev: drm device for the ioctl
2285 * @data: data pointer for the ioctl
2286 * @file_priv: drm file for the ioctl call
2288 * Construct a encoder configuration structure to return to the user.
2290 * Called by the user via ioctl.
2293 * Zero on success, negative errno on failure.
2295 int drm_mode_getencoder(struct drm_device *dev, void *data,
2296 struct drm_file *file_priv)
2298 struct drm_mode_get_encoder *enc_resp = data;
2299 struct drm_encoder *encoder;
2300 struct drm_crtc *crtc;
2302 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2305 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
2309 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2310 crtc = drm_encoder_get_crtc(encoder);
2312 enc_resp->crtc_id = crtc->base.id;
2314 enc_resp->crtc_id = 0;
2315 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2317 enc_resp->encoder_type = encoder->encoder_type;
2318 enc_resp->encoder_id = encoder->base.id;
2319 enc_resp->possible_crtcs = encoder->possible_crtcs;
2320 enc_resp->possible_clones = encoder->possible_clones;
2326 * drm_mode_getplane_res - enumerate all plane resources
2329 * @file_priv: DRM file info
2331 * Construct a list of plane ids to return to the user.
2333 * Called by the user via ioctl.
2336 * Zero on success, negative errno on failure.
2338 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2339 struct drm_file *file_priv)
2341 struct drm_mode_get_plane_res *plane_resp = data;
2342 struct drm_mode_config *config;
2343 struct drm_plane *plane;
2344 uint32_t __user *plane_ptr;
2346 unsigned num_planes;
2348 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2351 config = &dev->mode_config;
2353 if (file_priv->universal_planes)
2354 num_planes = config->num_total_plane;
2356 num_planes = config->num_overlay_plane;
2359 * This ioctl is called twice, once to determine how much space is
2360 * needed, and the 2nd time to fill it.
2363 (plane_resp->count_planes >= num_planes)) {
2364 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2366 /* Plane lists are invariant, no locking needed. */
2367 drm_for_each_plane(plane, dev) {
2369 * Unless userspace set the 'universal planes'
2370 * capability bit, only advertise overlays.
2372 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2373 !file_priv->universal_planes)
2376 if (put_user(plane->base.id, plane_ptr + copied))
2381 plane_resp->count_planes = num_planes;
2387 * drm_mode_getplane - get plane configuration
2390 * @file_priv: DRM file info
2392 * Construct a plane configuration structure to return to the user.
2394 * Called by the user via ioctl.
2397 * Zero on success, negative errno on failure.
2399 int drm_mode_getplane(struct drm_device *dev, void *data,
2400 struct drm_file *file_priv)
2402 struct drm_mode_get_plane *plane_resp = data;
2403 struct drm_plane *plane;
2404 uint32_t __user *format_ptr;
2406 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2409 plane = drm_plane_find(dev, plane_resp->plane_id);
2413 drm_modeset_lock(&plane->mutex, NULL);
2415 plane_resp->crtc_id = plane->crtc->base.id;
2417 plane_resp->crtc_id = 0;
2420 plane_resp->fb_id = plane->fb->base.id;
2422 plane_resp->fb_id = 0;
2423 drm_modeset_unlock(&plane->mutex);
2425 plane_resp->plane_id = plane->base.id;
2426 plane_resp->possible_crtcs = plane->possible_crtcs;
2427 plane_resp->gamma_size = 0;
2430 * This ioctl is called twice, once to determine how much space is
2431 * needed, and the 2nd time to fill it.
2433 if (plane->format_count &&
2434 (plane_resp->count_format_types >= plane->format_count)) {
2435 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2436 if (copy_to_user(format_ptr,
2437 plane->format_types,
2438 sizeof(uint32_t) * plane->format_count)) {
2442 plane_resp->count_format_types = plane->format_count;
2448 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2449 * @plane: plane to check for format support
2450 * @format: the pixel format
2453 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2456 int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format)
2460 for (i = 0; i < plane->format_count; i++) {
2461 if (format == plane->format_types[i])
2468 static int check_src_coords(uint32_t src_x, uint32_t src_y,
2469 uint32_t src_w, uint32_t src_h,
2470 const struct drm_framebuffer *fb)
2472 unsigned int fb_width, fb_height;
2474 fb_width = fb->width << 16;
2475 fb_height = fb->height << 16;
2477 /* Make sure source coordinates are inside the fb. */
2478 if (src_w > fb_width ||
2479 src_x > fb_width - src_w ||
2480 src_h > fb_height ||
2481 src_y > fb_height - src_h) {
2482 DRM_DEBUG_KMS("Invalid source coordinates "
2483 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2484 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2485 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2486 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2487 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2495 * setplane_internal - setplane handler for internal callers
2497 * Note that we assume an extra reference has already been taken on fb. If the
2498 * update fails, this reference will be dropped before return; if it succeeds,
2499 * the previous framebuffer (if any) will be unreferenced instead.
2501 * src_{x,y,w,h} are provided in 16.16 fixed point format
2503 static int __setplane_internal(struct drm_plane *plane,
2504 struct drm_crtc *crtc,
2505 struct drm_framebuffer *fb,
2506 int32_t crtc_x, int32_t crtc_y,
2507 uint32_t crtc_w, uint32_t crtc_h,
2508 /* src_{x,y,w,h} values are 16.16 fixed point */
2509 uint32_t src_x, uint32_t src_y,
2510 uint32_t src_w, uint32_t src_h)
2514 /* No fb means shut it down */
2516 plane->old_fb = plane->fb;
2517 ret = plane->funcs->disable_plane(plane);
2522 plane->old_fb = NULL;
2527 /* Check whether this plane is usable on this CRTC */
2528 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2529 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2534 /* Check whether this plane supports the fb pixel format. */
2535 ret = drm_plane_check_pixel_format(plane, fb->pixel_format);
2537 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2538 drm_get_format_name(fb->pixel_format));
2542 /* Give drivers some help against integer overflows */
2543 if (crtc_w > INT_MAX ||
2544 crtc_x > INT_MAX - (int32_t) crtc_w ||
2546 crtc_y > INT_MAX - (int32_t) crtc_h) {
2547 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2548 crtc_w, crtc_h, crtc_x, crtc_y);
2553 ret = check_src_coords(src_x, src_y, src_w, src_h, fb);
2557 plane->old_fb = plane->fb;
2558 ret = plane->funcs->update_plane(plane, crtc, fb,
2559 crtc_x, crtc_y, crtc_w, crtc_h,
2560 src_x, src_y, src_w, src_h);
2566 plane->old_fb = NULL;
2571 drm_framebuffer_unreference(fb);
2573 drm_framebuffer_unreference(plane->old_fb);
2574 plane->old_fb = NULL;
2579 static int setplane_internal(struct drm_plane *plane,
2580 struct drm_crtc *crtc,
2581 struct drm_framebuffer *fb,
2582 int32_t crtc_x, int32_t crtc_y,
2583 uint32_t crtc_w, uint32_t crtc_h,
2584 /* src_{x,y,w,h} values are 16.16 fixed point */
2585 uint32_t src_x, uint32_t src_y,
2586 uint32_t src_w, uint32_t src_h)
2590 drm_modeset_lock_all(plane->dev);
2591 ret = __setplane_internal(plane, crtc, fb,
2592 crtc_x, crtc_y, crtc_w, crtc_h,
2593 src_x, src_y, src_w, src_h);
2594 drm_modeset_unlock_all(plane->dev);
2600 * drm_mode_setplane - configure a plane's configuration
2602 * @data: ioctl data*
2603 * @file_priv: DRM file info
2605 * Set plane configuration, including placement, fb, scaling, and other factors.
2606 * Or pass a NULL fb to disable (planes may be disabled without providing a
2610 * Zero on success, negative errno on failure.
2612 int drm_mode_setplane(struct drm_device *dev, void *data,
2613 struct drm_file *file_priv)
2615 struct drm_mode_set_plane *plane_req = data;
2616 struct drm_plane *plane;
2617 struct drm_crtc *crtc = NULL;
2618 struct drm_framebuffer *fb = NULL;
2620 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2624 * First, find the plane, crtc, and fb objects. If not available,
2625 * we don't bother to call the driver.
2627 plane = drm_plane_find(dev, plane_req->plane_id);
2629 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2630 plane_req->plane_id);
2634 if (plane_req->fb_id) {
2635 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2637 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2642 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2644 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2645 plane_req->crtc_id);
2651 * setplane_internal will take care of deref'ing either the old or new
2652 * framebuffer depending on success.
2654 return setplane_internal(plane, crtc, fb,
2655 plane_req->crtc_x, plane_req->crtc_y,
2656 plane_req->crtc_w, plane_req->crtc_h,
2657 plane_req->src_x, plane_req->src_y,
2658 plane_req->src_w, plane_req->src_h);
2662 * drm_mode_set_config_internal - helper to call ->set_config
2663 * @set: modeset config to set
2665 * This is a little helper to wrap internal calls to the ->set_config driver
2666 * interface. The only thing it adds is correct refcounting dance.
2669 * Zero on success, negative errno on failure.
2671 int drm_mode_set_config_internal(struct drm_mode_set *set)
2673 struct drm_crtc *crtc = set->crtc;
2674 struct drm_framebuffer *fb;
2675 struct drm_crtc *tmp;
2679 * NOTE: ->set_config can also disable other crtcs (if we steal all
2680 * connectors from it), hence we need to refcount the fbs across all
2681 * crtcs. Atomic modeset will have saner semantics ...
2683 drm_for_each_crtc(tmp, crtc->dev)
2684 tmp->primary->old_fb = tmp->primary->fb;
2688 ret = crtc->funcs->set_config(set);
2690 crtc->primary->crtc = crtc;
2691 crtc->primary->fb = fb;
2694 drm_for_each_crtc(tmp, crtc->dev) {
2695 if (tmp->primary->fb)
2696 drm_framebuffer_reference(tmp->primary->fb);
2697 if (tmp->primary->old_fb)
2698 drm_framebuffer_unreference(tmp->primary->old_fb);
2699 tmp->primary->old_fb = NULL;
2704 EXPORT_SYMBOL(drm_mode_set_config_internal);
2707 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2708 * @mode: mode to query
2709 * @hdisplay: hdisplay value to fill in
2710 * @vdisplay: vdisplay value to fill in
2712 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2713 * the appropriate layout.
2715 void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
2716 int *hdisplay, int *vdisplay)
2718 struct drm_display_mode adjusted;
2720 drm_mode_copy(&adjusted, mode);
2721 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
2722 *hdisplay = adjusted.crtc_hdisplay;
2723 *vdisplay = adjusted.crtc_vdisplay;
2725 EXPORT_SYMBOL(drm_crtc_get_hv_timing);
2728 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2730 * @crtc: CRTC that framebuffer will be displayed on
2733 * @mode: mode that framebuffer will be displayed under
2734 * @fb: framebuffer to check size of
2736 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2738 const struct drm_display_mode *mode,
2739 const struct drm_framebuffer *fb)
2742 int hdisplay, vdisplay;
2744 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
2747 crtc->primary->state->rotation & (BIT(DRM_ROTATE_90) |
2748 BIT(DRM_ROTATE_270)))
2749 swap(hdisplay, vdisplay);
2751 return check_src_coords(x << 16, y << 16,
2752 hdisplay << 16, vdisplay << 16, fb);
2754 EXPORT_SYMBOL(drm_crtc_check_viewport);
2757 * drm_mode_setcrtc - set CRTC configuration
2758 * @dev: drm device for the ioctl
2759 * @data: data pointer for the ioctl
2760 * @file_priv: drm file for the ioctl call
2762 * Build a new CRTC configuration based on user request.
2764 * Called by the user via ioctl.
2767 * Zero on success, negative errno on failure.
2769 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2770 struct drm_file *file_priv)
2772 struct drm_mode_config *config = &dev->mode_config;
2773 struct drm_mode_crtc *crtc_req = data;
2774 struct drm_crtc *crtc;
2775 struct drm_connector **connector_set = NULL, *connector;
2776 struct drm_framebuffer *fb = NULL;
2777 struct drm_display_mode *mode = NULL;
2778 struct drm_mode_set set;
2779 uint32_t __user *set_connectors_ptr;
2783 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2787 * Universal plane src offsets are only 16.16, prevent havoc for
2788 * drivers using universal plane code internally.
2790 if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000)
2793 drm_modeset_lock_all(dev);
2794 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2796 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2800 DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name);
2802 if (crtc_req->mode_valid) {
2803 /* If we have a mode we need a framebuffer. */
2804 /* If we pass -1, set the mode with the currently bound fb */
2805 if (crtc_req->fb_id == -1) {
2806 if (!crtc->primary->fb) {
2807 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2811 fb = crtc->primary->fb;
2812 /* Make refcounting symmetric with the lookup path. */
2813 drm_framebuffer_reference(fb);
2815 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2817 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2824 mode = drm_mode_create(dev);
2830 ret = drm_mode_convert_umode(mode, &crtc_req->mode);
2832 DRM_DEBUG_KMS("Invalid mode\n");
2836 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2839 * Check whether the primary plane supports the fb pixel format.
2840 * Drivers not implementing the universal planes API use a
2841 * default formats list provided by the DRM core which doesn't
2842 * match real hardware capabilities. Skip the check in that
2845 if (!crtc->primary->format_default) {
2846 ret = drm_plane_check_pixel_format(crtc->primary,
2849 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2850 drm_get_format_name(fb->pixel_format));
2855 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2862 if (crtc_req->count_connectors == 0 && mode) {
2863 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2868 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2869 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2870 crtc_req->count_connectors);
2875 if (crtc_req->count_connectors > 0) {
2878 /* Avoid unbounded kernel memory allocation */
2879 if (crtc_req->count_connectors > config->num_connector) {
2884 connector_set = kmalloc_array(crtc_req->count_connectors,
2885 sizeof(struct drm_connector *),
2887 if (!connector_set) {
2892 for (i = 0; i < crtc_req->count_connectors; i++) {
2893 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2894 if (get_user(out_id, &set_connectors_ptr[i])) {
2899 connector = drm_connector_find(dev, out_id);
2901 DRM_DEBUG_KMS("Connector id %d unknown\n",
2906 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2910 connector_set[i] = connector;
2915 set.x = crtc_req->x;
2916 set.y = crtc_req->y;
2918 set.connectors = connector_set;
2919 set.num_connectors = crtc_req->count_connectors;
2921 ret = drm_mode_set_config_internal(&set);
2925 drm_framebuffer_unreference(fb);
2927 kfree(connector_set);
2928 drm_mode_destroy(dev, mode);
2929 drm_modeset_unlock_all(dev);
2934 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2935 * universal plane handler call
2936 * @crtc: crtc to update cursor for
2937 * @req: data pointer for the ioctl
2938 * @file_priv: drm file for the ioctl call
2940 * Legacy cursor ioctl's work directly with driver buffer handles. To
2941 * translate legacy ioctl calls into universal plane handler calls, we need to
2942 * wrap the native buffer handle in a drm_framebuffer.
2944 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2945 * buffer with a pitch of 4*width; the universal plane interface should be used
2946 * directly in cases where the hardware can support other buffer settings and
2947 * userspace wants to make use of these capabilities.
2950 * Zero on success, negative errno on failure.
2952 static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2953 struct drm_mode_cursor2 *req,
2954 struct drm_file *file_priv)
2956 struct drm_device *dev = crtc->dev;
2957 struct drm_framebuffer *fb = NULL;
2958 struct drm_mode_fb_cmd2 fbreq = {
2959 .width = req->width,
2960 .height = req->height,
2961 .pixel_format = DRM_FORMAT_ARGB8888,
2962 .pitches = { req->width * 4 },
2963 .handles = { req->handle },
2965 int32_t crtc_x, crtc_y;
2966 uint32_t crtc_w = 0, crtc_h = 0;
2967 uint32_t src_w = 0, src_h = 0;
2970 BUG_ON(!crtc->cursor);
2971 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
2974 * Obtain fb we'll be using (either new or existing) and take an extra
2975 * reference to it if fb != null. setplane will take care of dropping
2976 * the reference if the plane update fails.
2978 if (req->flags & DRM_MODE_CURSOR_BO) {
2980 fb = internal_framebuffer_create(dev, &fbreq, file_priv);
2982 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2989 fb = crtc->cursor->fb;
2991 drm_framebuffer_reference(fb);
2994 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2998 crtc_x = crtc->cursor_x;
2999 crtc_y = crtc->cursor_y;
3004 crtc_h = fb->height;
3005 src_w = fb->width << 16;
3006 src_h = fb->height << 16;
3010 * setplane_internal will take care of deref'ing either the old or new
3011 * framebuffer depending on success.
3013 ret = __setplane_internal(crtc->cursor, crtc, fb,
3014 crtc_x, crtc_y, crtc_w, crtc_h,
3015 0, 0, src_w, src_h);
3017 /* Update successful; save new cursor position, if necessary */
3018 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
3019 crtc->cursor_x = req->x;
3020 crtc->cursor_y = req->y;
3026 static int drm_mode_cursor_common(struct drm_device *dev,
3027 struct drm_mode_cursor2 *req,
3028 struct drm_file *file_priv)
3030 struct drm_crtc *crtc;
3033 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3036 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
3039 crtc = drm_crtc_find(dev, req->crtc_id);
3041 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
3046 * If this crtc has a universal cursor plane, call that plane's update
3047 * handler rather than using legacy cursor handlers.
3049 drm_modeset_lock_crtc(crtc, crtc->cursor);
3051 ret = drm_mode_cursor_universal(crtc, req, file_priv);
3055 if (req->flags & DRM_MODE_CURSOR_BO) {
3056 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
3060 /* Turns off the cursor if handle is 0 */
3061 if (crtc->funcs->cursor_set2)
3062 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
3063 req->width, req->height, req->hot_x, req->hot_y);
3065 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
3066 req->width, req->height);
3069 if (req->flags & DRM_MODE_CURSOR_MOVE) {
3070 if (crtc->funcs->cursor_move) {
3071 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
3078 drm_modeset_unlock_crtc(crtc);
3086 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
3087 * @dev: drm device for the ioctl
3088 * @data: data pointer for the ioctl
3089 * @file_priv: drm file for the ioctl call
3091 * Set the cursor configuration based on user request.
3093 * Called by the user via ioctl.
3096 * Zero on success, negative errno on failure.
3098 int drm_mode_cursor_ioctl(struct drm_device *dev,
3099 void *data, struct drm_file *file_priv)
3101 struct drm_mode_cursor *req = data;
3102 struct drm_mode_cursor2 new_req;
3104 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
3105 new_req.hot_x = new_req.hot_y = 0;
3107 return drm_mode_cursor_common(dev, &new_req, file_priv);
3111 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3112 * @dev: drm device for the ioctl
3113 * @data: data pointer for the ioctl
3114 * @file_priv: drm file for the ioctl call
3116 * Set the cursor configuration based on user request. This implements the 2nd
3117 * version of the cursor ioctl, which allows userspace to additionally specify
3118 * the hotspot of the pointer.
3120 * Called by the user via ioctl.
3123 * Zero on success, negative errno on failure.
3125 int drm_mode_cursor2_ioctl(struct drm_device *dev,
3126 void *data, struct drm_file *file_priv)
3128 struct drm_mode_cursor2 *req = data;
3130 return drm_mode_cursor_common(dev, req, file_priv);
3134 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3135 * @bpp: bits per pixels
3136 * @depth: bit depth per pixel
3138 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3139 * Useful in fbdev emulation code, since that deals in those values.
3141 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
3147 fmt = DRM_FORMAT_C8;
3151 fmt = DRM_FORMAT_XRGB1555;
3153 fmt = DRM_FORMAT_RGB565;
3156 fmt = DRM_FORMAT_RGB888;
3160 fmt = DRM_FORMAT_XRGB8888;
3161 else if (depth == 30)
3162 fmt = DRM_FORMAT_XRGB2101010;
3164 fmt = DRM_FORMAT_ARGB8888;
3167 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3168 fmt = DRM_FORMAT_XRGB8888;
3174 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3177 * drm_mode_addfb - add an FB to the graphics configuration
3178 * @dev: drm device for the ioctl
3179 * @data: data pointer for the ioctl
3180 * @file_priv: drm file for the ioctl call
3182 * Add a new FB to the specified CRTC, given a user request. This is the
3183 * original addfb ioctl which only supported RGB formats.
3185 * Called by the user via ioctl.
3188 * Zero on success, negative errno on failure.
3190 int drm_mode_addfb(struct drm_device *dev,
3191 void *data, struct drm_file *file_priv)
3193 struct drm_mode_fb_cmd *or = data;
3194 struct drm_mode_fb_cmd2 r = {};
3197 /* convert to new format and call new ioctl */
3198 r.fb_id = or->fb_id;
3199 r.width = or->width;
3200 r.height = or->height;
3201 r.pitches[0] = or->pitch;
3202 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3203 r.handles[0] = or->handle;
3205 ret = drm_mode_addfb2(dev, &r, file_priv);
3209 or->fb_id = r.fb_id;
3214 static int format_check(const struct drm_mode_fb_cmd2 *r)
3216 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3220 case DRM_FORMAT_RGB332:
3221 case DRM_FORMAT_BGR233:
3222 case DRM_FORMAT_XRGB4444:
3223 case DRM_FORMAT_XBGR4444:
3224 case DRM_FORMAT_RGBX4444:
3225 case DRM_FORMAT_BGRX4444:
3226 case DRM_FORMAT_ARGB4444:
3227 case DRM_FORMAT_ABGR4444:
3228 case DRM_FORMAT_RGBA4444:
3229 case DRM_FORMAT_BGRA4444:
3230 case DRM_FORMAT_XRGB1555:
3231 case DRM_FORMAT_XBGR1555:
3232 case DRM_FORMAT_RGBX5551:
3233 case DRM_FORMAT_BGRX5551:
3234 case DRM_FORMAT_ARGB1555:
3235 case DRM_FORMAT_ABGR1555:
3236 case DRM_FORMAT_RGBA5551:
3237 case DRM_FORMAT_BGRA5551:
3238 case DRM_FORMAT_RGB565:
3239 case DRM_FORMAT_BGR565:
3240 case DRM_FORMAT_RGB888:
3241 case DRM_FORMAT_BGR888:
3242 case DRM_FORMAT_XRGB8888:
3243 case DRM_FORMAT_XBGR8888:
3244 case DRM_FORMAT_RGBX8888:
3245 case DRM_FORMAT_BGRX8888:
3246 case DRM_FORMAT_ARGB8888:
3247 case DRM_FORMAT_ABGR8888:
3248 case DRM_FORMAT_RGBA8888:
3249 case DRM_FORMAT_BGRA8888:
3250 case DRM_FORMAT_XRGB2101010:
3251 case DRM_FORMAT_XBGR2101010:
3252 case DRM_FORMAT_RGBX1010102:
3253 case DRM_FORMAT_BGRX1010102:
3254 case DRM_FORMAT_ARGB2101010:
3255 case DRM_FORMAT_ABGR2101010:
3256 case DRM_FORMAT_RGBA1010102:
3257 case DRM_FORMAT_BGRA1010102:
3258 case DRM_FORMAT_YUYV:
3259 case DRM_FORMAT_YVYU:
3260 case DRM_FORMAT_UYVY:
3261 case DRM_FORMAT_VYUY:
3262 case DRM_FORMAT_AYUV:
3263 case DRM_FORMAT_NV12:
3264 case DRM_FORMAT_NV21:
3265 case DRM_FORMAT_NV16:
3266 case DRM_FORMAT_NV61:
3267 case DRM_FORMAT_NV24:
3268 case DRM_FORMAT_NV42:
3269 case DRM_FORMAT_YUV410:
3270 case DRM_FORMAT_YVU410:
3271 case DRM_FORMAT_YUV411:
3272 case DRM_FORMAT_YVU411:
3273 case DRM_FORMAT_YUV420:
3274 case DRM_FORMAT_YVU420:
3275 case DRM_FORMAT_YUV422:
3276 case DRM_FORMAT_YVU422:
3277 case DRM_FORMAT_YUV444:
3278 case DRM_FORMAT_YVU444:
3281 DRM_DEBUG_KMS("invalid pixel format %s\n",
3282 drm_get_format_name(r->pixel_format));
3287 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
3289 int ret, hsub, vsub, num_planes, i;
3291 ret = format_check(r);
3293 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3294 drm_get_format_name(r->pixel_format));
3298 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3299 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3300 num_planes = drm_format_num_planes(r->pixel_format);
3302 if (r->width == 0 || r->width % hsub) {
3303 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
3307 if (r->height == 0 || r->height % vsub) {
3308 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
3312 for (i = 0; i < num_planes; i++) {
3313 unsigned int width = r->width / (i != 0 ? hsub : 1);
3314 unsigned int height = r->height / (i != 0 ? vsub : 1);
3315 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
3317 if (!r->handles[i]) {
3318 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
3322 if ((uint64_t) width * cpp > UINT_MAX)
3325 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3328 if (r->pitches[i] < width * cpp) {
3329 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
3333 if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
3334 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3339 /* modifier specific checks: */
3340 switch (r->modifier[i]) {
3341 case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE:
3342 /* NOTE: the pitch restriction may be lifted later if it turns
3343 * out that no hw has this restriction:
3345 if (r->pixel_format != DRM_FORMAT_NV12 ||
3346 width % 128 || height % 32 ||
3347 r->pitches[i] % 128) {
3348 DRM_DEBUG_KMS("bad modifier data for plane %d\n", i);
3358 for (i = num_planes; i < 4; i++) {
3359 if (r->modifier[i]) {
3360 DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i);
3364 /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
3365 if (!(r->flags & DRM_MODE_FB_MODIFIERS))
3368 if (r->handles[i]) {
3369 DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i);
3373 if (r->pitches[i]) {
3374 DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i);
3378 if (r->offsets[i]) {
3379 DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i);
3387 static struct drm_framebuffer *
3388 internal_framebuffer_create(struct drm_device *dev,
3389 const struct drm_mode_fb_cmd2 *r,
3390 struct drm_file *file_priv)
3392 struct drm_mode_config *config = &dev->mode_config;
3393 struct drm_framebuffer *fb;
3396 if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
3397 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
3398 return ERR_PTR(-EINVAL);
3401 if ((config->min_width > r->width) || (r->width > config->max_width)) {
3402 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3403 r->width, config->min_width, config->max_width);
3404 return ERR_PTR(-EINVAL);
3406 if ((config->min_height > r->height) || (r->height > config->max_height)) {
3407 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3408 r->height, config->min_height, config->max_height);
3409 return ERR_PTR(-EINVAL);
3412 if (r->flags & DRM_MODE_FB_MODIFIERS &&
3413 !dev->mode_config.allow_fb_modifiers) {
3414 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3415 return ERR_PTR(-EINVAL);
3418 ret = framebuffer_check(r);
3420 return ERR_PTR(ret);
3422 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
3424 DRM_DEBUG_KMS("could not create framebuffer\n");
3432 * drm_mode_addfb2 - add an FB to the graphics configuration
3433 * @dev: drm device for the ioctl
3434 * @data: data pointer for the ioctl
3435 * @file_priv: drm file for the ioctl call
3437 * Add a new FB to the specified CRTC, given a user request with format. This is
3438 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3439 * and uses fourcc codes as pixel format specifiers.
3441 * Called by the user via ioctl.
3444 * Zero on success, negative errno on failure.
3446 int drm_mode_addfb2(struct drm_device *dev,
3447 void *data, struct drm_file *file_priv)
3449 struct drm_mode_fb_cmd2 *r = data;
3450 struct drm_framebuffer *fb;
3452 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3455 fb = internal_framebuffer_create(dev, r, file_priv);
3459 /* Transfer ownership to the filp for reaping on close */
3461 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3462 mutex_lock(&file_priv->fbs_lock);
3463 r->fb_id = fb->base.id;
3464 list_add(&fb->filp_head, &file_priv->fbs);
3465 mutex_unlock(&file_priv->fbs_lock);
3471 * drm_mode_rmfb - remove an FB from the configuration
3472 * @dev: drm device for the ioctl
3473 * @data: data pointer for the ioctl
3474 * @file_priv: drm file for the ioctl call
3476 * Remove the FB specified by the user.
3478 * Called by the user via ioctl.
3481 * Zero on success, negative errno on failure.
3483 int drm_mode_rmfb(struct drm_device *dev,
3484 void *data, struct drm_file *file_priv)
3486 struct drm_framebuffer *fb = NULL;
3487 struct drm_framebuffer *fbl = NULL;
3488 uint32_t *id = data;
3491 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3494 mutex_lock(&file_priv->fbs_lock);
3495 mutex_lock(&dev->mode_config.fb_lock);
3496 fb = __drm_framebuffer_lookup(dev, *id);
3500 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3506 list_del_init(&fb->filp_head);
3507 mutex_unlock(&dev->mode_config.fb_lock);
3508 mutex_unlock(&file_priv->fbs_lock);
3510 drm_framebuffer_unreference(fb);
3515 mutex_unlock(&dev->mode_config.fb_lock);
3516 mutex_unlock(&file_priv->fbs_lock);
3522 * drm_mode_getfb - get FB info
3523 * @dev: drm device for the ioctl
3524 * @data: data pointer for the ioctl
3525 * @file_priv: drm file for the ioctl call
3527 * Lookup the FB given its ID and return info about it.
3529 * Called by the user via ioctl.
3532 * Zero on success, negative errno on failure.
3534 int drm_mode_getfb(struct drm_device *dev,
3535 void *data, struct drm_file *file_priv)
3537 struct drm_mode_fb_cmd *r = data;
3538 struct drm_framebuffer *fb;
3541 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3544 fb = drm_framebuffer_lookup(dev, r->fb_id);
3548 r->height = fb->height;
3549 r->width = fb->width;
3550 r->depth = fb->depth;
3551 r->bpp = fb->bits_per_pixel;
3552 r->pitch = fb->pitches[0];
3553 if (fb->funcs->create_handle) {
3554 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
3555 drm_is_control_client(file_priv)) {
3556 ret = fb->funcs->create_handle(fb, file_priv,
3559 /* GET_FB() is an unprivileged ioctl so we must not
3560 * return a buffer-handle to non-master processes! For
3561 * backwards-compatibility reasons, we cannot make
3562 * GET_FB() privileged, so just return an invalid handle
3563 * for non-masters. */
3571 drm_framebuffer_unreference(fb);
3577 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3578 * @dev: drm device for the ioctl
3579 * @data: data pointer for the ioctl
3580 * @file_priv: drm file for the ioctl call
3582 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3583 * rectangle list. Generic userspace which does frontbuffer rendering must call
3584 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3585 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3587 * Modesetting drivers which always update the frontbuffer do not need to
3588 * implement the corresponding ->dirty framebuffer callback.
3590 * Called by the user via ioctl.
3593 * Zero on success, negative errno on failure.
3595 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3596 void *data, struct drm_file *file_priv)
3598 struct drm_clip_rect __user *clips_ptr;
3599 struct drm_clip_rect *clips = NULL;
3600 struct drm_mode_fb_dirty_cmd *r = data;
3601 struct drm_framebuffer *fb;
3606 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3609 fb = drm_framebuffer_lookup(dev, r->fb_id);
3613 num_clips = r->num_clips;
3614 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3616 if (!num_clips != !clips_ptr) {
3621 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3623 /* If userspace annotates copy, clips must come in pairs */
3624 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3629 if (num_clips && clips_ptr) {
3630 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3634 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
3640 ret = copy_from_user(clips, clips_ptr,
3641 num_clips * sizeof(*clips));
3648 if (fb->funcs->dirty) {
3649 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3658 drm_framebuffer_unreference(fb);
3665 * drm_fb_release - remove and free the FBs on this file
3666 * @priv: drm file for the ioctl
3668 * Destroy all the FBs associated with @filp.
3670 * Called by the user via ioctl.
3673 * Zero on success, negative errno on failure.
3675 void drm_fb_release(struct drm_file *priv)
3677 struct drm_framebuffer *fb, *tfb;
3680 * When the file gets released that means no one else can access the fb
3681 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3682 * avoid upsetting lockdep since the universal cursor code adds a
3683 * framebuffer while holding mutex locks.
3685 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3686 * locks is impossible here since no one else but this function can get
3689 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3690 list_del_init(&fb->filp_head);
3692 /* This drops the fpriv->fbs reference. */
3693 drm_framebuffer_unreference(fb);
3698 * drm_property_create - create a new property type
3700 * @flags: flags specifying the property type
3701 * @name: name of the property
3702 * @num_values: number of pre-defined values
3704 * This creates a new generic drm property which can then be attached to a drm
3705 * object with drm_object_attach_property. The returned property object must be
3706 * freed with drm_property_destroy.
3708 * Note that the DRM core keeps a per-device list of properties and that, if
3709 * drm_mode_config_cleanup() is called, it will destroy all properties created
3713 * A pointer to the newly created property on success, NULL on failure.
3715 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3716 const char *name, int num_values)
3718 struct drm_property *property = NULL;
3721 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3725 property->dev = dev;
3728 property->values = kcalloc(num_values, sizeof(uint64_t),
3730 if (!property->values)
3734 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3738 property->flags = flags;
3739 property->num_values = num_values;
3740 INIT_LIST_HEAD(&property->enum_list);
3743 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3744 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3747 list_add_tail(&property->head, &dev->mode_config.property_list);
3749 WARN_ON(!drm_property_type_valid(property));
3753 kfree(property->values);
3757 EXPORT_SYMBOL(drm_property_create);
3760 * drm_property_create_enum - create a new enumeration property type
3762 * @flags: flags specifying the property type
3763 * @name: name of the property
3764 * @props: enumeration lists with property values
3765 * @num_values: number of pre-defined values
3767 * This creates a new generic drm property which can then be attached to a drm
3768 * object with drm_object_attach_property. The returned property object must be
3769 * freed with drm_property_destroy.
3771 * Userspace is only allowed to set one of the predefined values for enumeration
3775 * A pointer to the newly created property on success, NULL on failure.
3777 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3779 const struct drm_prop_enum_list *props,
3782 struct drm_property *property;
3785 flags |= DRM_MODE_PROP_ENUM;
3787 property = drm_property_create(dev, flags, name, num_values);
3791 for (i = 0; i < num_values; i++) {
3792 ret = drm_property_add_enum(property, i,
3796 drm_property_destroy(dev, property);
3803 EXPORT_SYMBOL(drm_property_create_enum);
3806 * drm_property_create_bitmask - create a new bitmask property type
3808 * @flags: flags specifying the property type
3809 * @name: name of the property
3810 * @props: enumeration lists with property bitflags
3811 * @num_props: size of the @props array
3812 * @supported_bits: bitmask of all supported enumeration values
3814 * This creates a new bitmask drm property which can then be attached to a drm
3815 * object with drm_object_attach_property. The returned property object must be
3816 * freed with drm_property_destroy.
3818 * Compared to plain enumeration properties userspace is allowed to set any
3819 * or'ed together combination of the predefined property bitflag values
3822 * A pointer to the newly created property on success, NULL on failure.
3824 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3825 int flags, const char *name,
3826 const struct drm_prop_enum_list *props,
3828 uint64_t supported_bits)
3830 struct drm_property *property;
3831 int i, ret, index = 0;
3832 int num_values = hweight64(supported_bits);
3834 flags |= DRM_MODE_PROP_BITMASK;
3836 property = drm_property_create(dev, flags, name, num_values);
3839 for (i = 0; i < num_props; i++) {
3840 if (!(supported_bits & (1ULL << props[i].type)))
3843 if (WARN_ON(index >= num_values)) {
3844 drm_property_destroy(dev, property);
3848 ret = drm_property_add_enum(property, index++,
3852 drm_property_destroy(dev, property);
3859 EXPORT_SYMBOL(drm_property_create_bitmask);
3861 static struct drm_property *property_create_range(struct drm_device *dev,
3862 int flags, const char *name,
3863 uint64_t min, uint64_t max)
3865 struct drm_property *property;
3867 property = drm_property_create(dev, flags, name, 2);
3871 property->values[0] = min;
3872 property->values[1] = max;
3878 * drm_property_create_range - create a new unsigned ranged property type
3880 * @flags: flags specifying the property type
3881 * @name: name of the property
3882 * @min: minimum value of the property
3883 * @max: maximum value of the property
3885 * This creates a new generic drm property which can then be attached to a drm
3886 * object with drm_object_attach_property. The returned property object must be
3887 * freed with drm_property_destroy.
3889 * Userspace is allowed to set any unsigned integer value in the (min, max)
3893 * A pointer to the newly created property on success, NULL on failure.
3895 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3897 uint64_t min, uint64_t max)
3899 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3902 EXPORT_SYMBOL(drm_property_create_range);
3905 * drm_property_create_signed_range - create a new signed ranged property type
3907 * @flags: flags specifying the property type
3908 * @name: name of the property
3909 * @min: minimum value of the property
3910 * @max: maximum value of the property
3912 * This creates a new generic drm property which can then be attached to a drm
3913 * object with drm_object_attach_property. The returned property object must be
3914 * freed with drm_property_destroy.
3916 * Userspace is allowed to set any signed integer value in the (min, max)
3920 * A pointer to the newly created property on success, NULL on failure.
3922 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3923 int flags, const char *name,
3924 int64_t min, int64_t max)
3926 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3927 name, I642U64(min), I642U64(max));
3929 EXPORT_SYMBOL(drm_property_create_signed_range);
3932 * drm_property_create_object - create a new object property type
3934 * @flags: flags specifying the property type
3935 * @name: name of the property
3936 * @type: object type from DRM_MODE_OBJECT_* defines
3938 * This creates a new generic drm property which can then be attached to a drm
3939 * object with drm_object_attach_property. The returned property object must be
3940 * freed with drm_property_destroy.
3942 * Userspace is only allowed to set this to any property value of the given
3943 * @type. Only useful for atomic properties, which is enforced.
3946 * A pointer to the newly created property on success, NULL on failure.
3948 struct drm_property *drm_property_create_object(struct drm_device *dev,
3949 int flags, const char *name, uint32_t type)
3951 struct drm_property *property;
3953 flags |= DRM_MODE_PROP_OBJECT;
3955 if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
3958 property = drm_property_create(dev, flags, name, 1);
3962 property->values[0] = type;
3966 EXPORT_SYMBOL(drm_property_create_object);
3969 * drm_property_create_bool - create a new boolean property type
3971 * @flags: flags specifying the property type
3972 * @name: name of the property
3974 * This creates a new generic drm property which can then be attached to a drm
3975 * object with drm_object_attach_property. The returned property object must be
3976 * freed with drm_property_destroy.
3978 * This is implemented as a ranged property with only {0, 1} as valid values.
3981 * A pointer to the newly created property on success, NULL on failure.
3983 struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
3986 return drm_property_create_range(dev, flags, name, 0, 1);
3988 EXPORT_SYMBOL(drm_property_create_bool);
3991 * drm_property_add_enum - add a possible value to an enumeration property
3992 * @property: enumeration property to change
3993 * @index: index of the new enumeration
3994 * @value: value of the new enumeration
3995 * @name: symbolic name of the new enumeration
3997 * This functions adds enumerations to a property.
3999 * It's use is deprecated, drivers should use one of the more specific helpers
4000 * to directly create the property with all enumerations already attached.
4003 * Zero on success, error code on failure.
4005 int drm_property_add_enum(struct drm_property *property, int index,
4006 uint64_t value, const char *name)
4008 struct drm_property_enum *prop_enum;
4010 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4011 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
4015 * Bitmask enum properties have the additional constraint of values
4018 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
4022 if (!list_empty(&property->enum_list)) {
4023 list_for_each_entry(prop_enum, &property->enum_list, head) {
4024 if (prop_enum->value == value) {
4025 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
4026 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
4032 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
4036 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
4037 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
4038 prop_enum->value = value;
4040 property->values[index] = value;
4041 list_add_tail(&prop_enum->head, &property->enum_list);
4044 EXPORT_SYMBOL(drm_property_add_enum);
4047 * drm_property_destroy - destroy a drm property
4049 * @property: property to destry
4051 * This function frees a property including any attached resources like
4052 * enumeration values.
4054 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
4056 struct drm_property_enum *prop_enum, *pt;
4058 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
4059 list_del(&prop_enum->head);
4063 if (property->num_values)
4064 kfree(property->values);
4065 drm_mode_object_unregister(dev, &property->base);
4066 list_del(&property->head);
4069 EXPORT_SYMBOL(drm_property_destroy);
4072 * drm_object_attach_property - attach a property to a modeset object
4073 * @obj: drm modeset object
4074 * @property: property to attach
4075 * @init_val: initial value of the property
4077 * This attaches the given property to the modeset object with the given initial
4078 * value. Currently this function cannot fail since the properties are stored in
4079 * a statically sized array.
4081 void drm_object_attach_property(struct drm_mode_object *obj,
4082 struct drm_property *property,
4085 int count = obj->properties->count;
4087 if (count == DRM_OBJECT_MAX_PROPERTY) {
4088 WARN(1, "Failed to attach object property (type: 0x%x). Please "
4089 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
4090 "you see this message on the same object type.\n",
4095 obj->properties->properties[count] = property;
4096 obj->properties->values[count] = init_val;
4097 obj->properties->count++;
4098 if (property->flags & DRM_MODE_PROP_ATOMIC)
4099 obj->properties->atomic_count++;
4101 EXPORT_SYMBOL(drm_object_attach_property);
4104 * drm_object_property_set_value - set the value of a property
4105 * @obj: drm mode object to set property value for
4106 * @property: property to set
4107 * @val: value the property should be set to
4109 * This functions sets a given property on a given object. This function only
4110 * changes the software state of the property, it does not call into the
4111 * driver's ->set_property callback.
4114 * Zero on success, error code on failure.
4116 int drm_object_property_set_value(struct drm_mode_object *obj,
4117 struct drm_property *property, uint64_t val)
4121 for (i = 0; i < obj->properties->count; i++) {
4122 if (obj->properties->properties[i] == property) {
4123 obj->properties->values[i] = val;
4130 EXPORT_SYMBOL(drm_object_property_set_value);
4133 * drm_object_property_get_value - retrieve the value of a property
4134 * @obj: drm mode object to get property value from
4135 * @property: property to retrieve
4136 * @val: storage for the property value
4138 * This function retrieves the softare state of the given property for the given
4139 * property. Since there is no driver callback to retrieve the current property
4140 * value this might be out of sync with the hardware, depending upon the driver
4144 * Zero on success, error code on failure.
4146 int drm_object_property_get_value(struct drm_mode_object *obj,
4147 struct drm_property *property, uint64_t *val)
4151 /* read-only properties bypass atomic mechanism and still store
4152 * their value in obj->properties->values[].. mostly to avoid
4153 * having to deal w/ EDID and similar props in atomic paths:
4155 if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
4156 !(property->flags & DRM_MODE_PROP_IMMUTABLE))
4157 return drm_atomic_get_property(obj, property, val);
4159 for (i = 0; i < obj->properties->count; i++) {
4160 if (obj->properties->properties[i] == property) {
4161 *val = obj->properties->values[i];
4168 EXPORT_SYMBOL(drm_object_property_get_value);
4171 * drm_mode_getproperty_ioctl - get the property metadata
4174 * @file_priv: DRM file info
4176 * This function retrieves the metadata for a given property, like the different
4177 * possible values for an enum property or the limits for a range property.
4179 * Blob properties are special
4181 * Called by the user via ioctl.
4184 * Zero on success, negative errno on failure.
4186 int drm_mode_getproperty_ioctl(struct drm_device *dev,
4187 void *data, struct drm_file *file_priv)
4189 struct drm_mode_get_property *out_resp = data;
4190 struct drm_property *property;
4192 int value_count = 0;
4195 struct drm_property_enum *prop_enum;
4196 struct drm_mode_property_enum __user *enum_ptr;
4197 uint64_t __user *values_ptr;
4199 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4202 drm_modeset_lock_all(dev);
4203 property = drm_property_find(dev, out_resp->prop_id);
4209 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4210 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4211 list_for_each_entry(prop_enum, &property->enum_list, head)
4215 value_count = property->num_values;
4217 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
4218 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
4219 out_resp->flags = property->flags;
4221 if ((out_resp->count_values >= value_count) && value_count) {
4222 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
4223 for (i = 0; i < value_count; i++) {
4224 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
4230 out_resp->count_values = value_count;
4232 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4233 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4234 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
4236 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
4237 list_for_each_entry(prop_enum, &property->enum_list, head) {
4239 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
4244 if (copy_to_user(&enum_ptr[copied].name,
4245 &prop_enum->name, DRM_PROP_NAME_LEN)) {
4252 out_resp->count_enum_blobs = enum_count;
4256 * NOTE: The idea seems to have been to use this to read all the blob
4257 * property values. But nothing ever added them to the corresponding
4258 * list, userspace always used the special-purpose get_blob ioctl to
4259 * read the value for a blob property. It also doesn't make a lot of
4260 * sense to return values here when everything else is just metadata for
4261 * the property itself.
4263 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4264 out_resp->count_enum_blobs = 0;
4266 drm_modeset_unlock_all(dev);
4271 * drm_property_create_blob - Create new blob property
4273 * Creates a new blob property for a specified DRM device, optionally
4276 * @dev: DRM device to create property for
4277 * @length: Length to allocate for blob data
4278 * @data: If specified, copies data into blob
4281 * New blob property with a single reference on success, or an ERR_PTR
4284 struct drm_property_blob *
4285 drm_property_create_blob(struct drm_device *dev, size_t length,
4288 struct drm_property_blob *blob;
4291 if (!length || length > ULONG_MAX - sizeof(struct drm_property_blob))
4292 return ERR_PTR(-EINVAL);
4294 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
4296 return ERR_PTR(-ENOMEM);
4298 /* This must be explicitly initialised, so we can safely call list_del
4299 * on it in the removal handler, even if it isn't in a file list. */
4300 INIT_LIST_HEAD(&blob->head_file);
4301 blob->length = length;
4305 memcpy(blob->data, data, length);
4307 mutex_lock(&dev->mode_config.blob_lock);
4309 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
4312 mutex_unlock(&dev->mode_config.blob_lock);
4313 return ERR_PTR(-EINVAL);
4316 kref_init(&blob->refcount);
4318 list_add_tail(&blob->head_global,
4319 &dev->mode_config.property_blob_list);
4321 mutex_unlock(&dev->mode_config.blob_lock);
4325 EXPORT_SYMBOL(drm_property_create_blob);
4328 * drm_property_free_blob - Blob property destructor
4330 * Internal free function for blob properties; must not be used directly.
4334 static void drm_property_free_blob(struct kref *kref)
4336 struct drm_property_blob *blob =
4337 container_of(kref, struct drm_property_blob, refcount);
4339 WARN_ON(!mutex_is_locked(&blob->dev->mode_config.blob_lock));
4341 list_del(&blob->head_global);
4342 list_del(&blob->head_file);
4343 drm_mode_object_unregister(blob->dev, &blob->base);
4349 * drm_property_unreference_blob - Unreference a blob property
4351 * Drop a reference on a blob property. May free the object.
4353 * @blob: Pointer to blob property
4355 void drm_property_unreference_blob(struct drm_property_blob *blob)
4357 struct drm_device *dev;
4364 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4366 if (kref_put_mutex(&blob->refcount, drm_property_free_blob,
4367 &dev->mode_config.blob_lock))
4368 mutex_unlock(&dev->mode_config.blob_lock);
4370 might_lock(&dev->mode_config.blob_lock);
4372 EXPORT_SYMBOL(drm_property_unreference_blob);
4375 * drm_property_unreference_blob_locked - Unreference a blob property with blob_lock held
4377 * Drop a reference on a blob property. May free the object. This must be
4378 * called with blob_lock held.
4380 * @blob: Pointer to blob property
4382 static void drm_property_unreference_blob_locked(struct drm_property_blob *blob)
4387 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4389 kref_put(&blob->refcount, drm_property_free_blob);
4393 * drm_property_destroy_user_blobs - destroy all blobs created by this client
4395 * @file_priv: destroy all blobs owned by this file handle
4397 void drm_property_destroy_user_blobs(struct drm_device *dev,
4398 struct drm_file *file_priv)
4400 struct drm_property_blob *blob, *bt;
4402 mutex_lock(&dev->mode_config.blob_lock);
4404 list_for_each_entry_safe(blob, bt, &file_priv->blobs, head_file) {
4405 list_del_init(&blob->head_file);
4406 drm_property_unreference_blob_locked(blob);
4409 mutex_unlock(&dev->mode_config.blob_lock);
4413 * drm_property_reference_blob - Take a reference on an existing property
4415 * Take a new reference on an existing blob property.
4417 * @blob: Pointer to blob property
4419 struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob)
4421 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4422 kref_get(&blob->refcount);
4425 EXPORT_SYMBOL(drm_property_reference_blob);
4428 * Like drm_property_lookup_blob, but does not return an additional reference.
4429 * Must be called with blob_lock held.
4431 static struct drm_property_blob *__drm_property_lookup_blob(struct drm_device *dev,
4434 struct drm_mode_object *obj = NULL;
4435 struct drm_property_blob *blob;
4437 WARN_ON(!mutex_is_locked(&dev->mode_config.blob_lock));
4439 mutex_lock(&dev->mode_config.idr_mutex);
4440 obj = idr_find(&dev->mode_config.crtc_idr, id);
4441 if (!obj || (obj->type != DRM_MODE_OBJECT_BLOB) || (obj->id != id))
4444 blob = obj_to_blob(obj);
4445 mutex_unlock(&dev->mode_config.idr_mutex);
4451 * drm_property_lookup_blob - look up a blob property and take a reference
4453 * @id: id of the blob property
4455 * If successful, this takes an additional reference to the blob property.
4456 * callers need to make sure to eventually unreference the returned property
4457 * again, using @drm_property_unreference_blob.
4459 struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
4462 struct drm_property_blob *blob;
4464 mutex_lock(&dev->mode_config.blob_lock);
4465 blob = __drm_property_lookup_blob(dev, id);
4467 if (!kref_get_unless_zero(&blob->refcount))
4470 mutex_unlock(&dev->mode_config.blob_lock);
4474 EXPORT_SYMBOL(drm_property_lookup_blob);
4477 * drm_property_replace_global_blob - atomically replace existing blob property
4479 * @replace: location of blob property pointer to be replaced
4480 * @length: length of data for new blob, or 0 for no data
4481 * @data: content for new blob, or NULL for no data
4482 * @obj_holds_id: optional object for property holding blob ID
4483 * @prop_holds_id: optional property holding blob ID
4484 * @return 0 on success or error on failure
4486 * This function will atomically replace a global property in the blob list,
4487 * optionally updating a property which holds the ID of that property. It is
4488 * guaranteed to be atomic: no caller will be allowed to see intermediate
4489 * results, and either the entire operation will succeed and clean up the
4490 * previous property, or it will fail and the state will be unchanged.
4492 * If length is 0 or data is NULL, no new blob will be created, and the holding
4493 * property, if specified, will be set to 0.
4495 * Access to the replace pointer is assumed to be protected by the caller, e.g.
4496 * by holding the relevant modesetting object lock for its parent.
4498 * For example, a drm_connector has a 'PATH' property, which contains the ID
4499 * of a blob property with the value of the MST path information. Calling this
4500 * function with replace pointing to the connector's path_blob_ptr, length and
4501 * data set for the new path information, obj_holds_id set to the connector's
4502 * base object, and prop_holds_id set to the path property name, will perform
4503 * a completely atomic update. The access to path_blob_ptr is protected by the
4504 * caller holding a lock on the connector.
4506 static int drm_property_replace_global_blob(struct drm_device *dev,
4507 struct drm_property_blob **replace,
4510 struct drm_mode_object *obj_holds_id,
4511 struct drm_property *prop_holds_id)
4513 struct drm_property_blob *new_blob = NULL;
4514 struct drm_property_blob *old_blob = NULL;
4517 WARN_ON(replace == NULL);
4519 old_blob = *replace;
4521 if (length && data) {
4522 new_blob = drm_property_create_blob(dev, length, data);
4523 if (IS_ERR(new_blob))
4524 return PTR_ERR(new_blob);
4527 /* This does not need to be synchronised with blob_lock, as the
4528 * get_properties ioctl locks all modesetting objects, and
4529 * obj_holds_id must be locked before calling here, so we cannot
4530 * have its value out of sync with the list membership modified
4531 * below under blob_lock. */
4533 ret = drm_object_property_set_value(obj_holds_id,
4536 new_blob->base.id : 0);
4541 drm_property_unreference_blob(old_blob);
4542 *replace = new_blob;
4547 drm_property_unreference_blob(new_blob);
4552 * drm_mode_getblob_ioctl - get the contents of a blob property value
4555 * @file_priv: DRM file info
4557 * This function retrieves the contents of a blob property. The value stored in
4558 * an object's blob property is just a normal modeset object id.
4560 * Called by the user via ioctl.
4563 * Zero on success, negative errno on failure.
4565 int drm_mode_getblob_ioctl(struct drm_device *dev,
4566 void *data, struct drm_file *file_priv)
4568 struct drm_mode_get_blob *out_resp = data;
4569 struct drm_property_blob *blob;
4571 void __user *blob_ptr;
4573 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4576 drm_modeset_lock_all(dev);
4577 mutex_lock(&dev->mode_config.blob_lock);
4578 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
4584 if (out_resp->length == blob->length) {
4585 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4586 if (copy_to_user(blob_ptr, blob->data, blob->length)) {
4591 out_resp->length = blob->length;
4594 mutex_unlock(&dev->mode_config.blob_lock);
4595 drm_modeset_unlock_all(dev);
4600 * drm_mode_createblob_ioctl - create a new blob property
4603 * @file_priv: DRM file info
4605 * This function creates a new blob property with user-defined values. In order
4606 * to give us sensible validation and checking when creating, rather than at
4607 * every potential use, we also require a type to be provided upfront.
4609 * Called by the user via ioctl.
4612 * Zero on success, negative errno on failure.
4614 int drm_mode_createblob_ioctl(struct drm_device *dev,
4615 void *data, struct drm_file *file_priv)
4617 struct drm_mode_create_blob *out_resp = data;
4618 struct drm_property_blob *blob;
4619 void __user *blob_ptr;
4622 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4625 blob = drm_property_create_blob(dev, out_resp->length, NULL);
4627 return PTR_ERR(blob);
4629 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4630 if (copy_from_user(blob->data, blob_ptr, out_resp->length)) {
4635 /* Dropping the lock between create_blob and our access here is safe
4636 * as only the same file_priv can remove the blob; at this point, it is
4637 * not associated with any file_priv. */
4638 mutex_lock(&dev->mode_config.blob_lock);
4639 out_resp->blob_id = blob->base.id;
4640 list_add_tail(&blob->head_file, &file_priv->blobs);
4641 mutex_unlock(&dev->mode_config.blob_lock);
4646 drm_property_unreference_blob(blob);
4651 * drm_mode_destroyblob_ioctl - destroy a user blob property
4654 * @file_priv: DRM file info
4656 * Destroy an existing user-defined blob property.
4658 * Called by the user via ioctl.
4661 * Zero on success, negative errno on failure.
4663 int drm_mode_destroyblob_ioctl(struct drm_device *dev,
4664 void *data, struct drm_file *file_priv)
4666 struct drm_mode_destroy_blob *out_resp = data;
4667 struct drm_property_blob *blob = NULL, *bt;
4671 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4674 mutex_lock(&dev->mode_config.blob_lock);
4675 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
4681 /* Ensure the property was actually created by this user. */
4682 list_for_each_entry(bt, &file_priv->blobs, head_file) {
4694 /* We must drop head_file here, because we may not be the last
4695 * reference on the blob. */
4696 list_del_init(&blob->head_file);
4697 drm_property_unreference_blob_locked(blob);
4698 mutex_unlock(&dev->mode_config.blob_lock);
4703 mutex_unlock(&dev->mode_config.blob_lock);
4708 * drm_mode_connector_set_path_property - set tile property on connector
4709 * @connector: connector to set property on.
4710 * @path: path to use for property; must not be NULL.
4712 * This creates a property to expose to userspace to specify a
4713 * connector path. This is mainly used for DisplayPort MST where
4714 * connectors have a topology and we want to allow userspace to give
4715 * them more meaningful names.
4718 * Zero on success, negative errno on failure.
4720 int drm_mode_connector_set_path_property(struct drm_connector *connector,
4723 struct drm_device *dev = connector->dev;
4726 ret = drm_property_replace_global_blob(dev,
4727 &connector->path_blob_ptr,
4731 dev->mode_config.path_property);
4734 EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4737 * drm_mode_connector_set_tile_property - set tile property on connector
4738 * @connector: connector to set property on.
4740 * This looks up the tile information for a connector, and creates a
4741 * property for userspace to parse if it exists. The property is of
4742 * the form of 8 integers using ':' as a separator.
4745 * Zero on success, errno on failure.
4747 int drm_mode_connector_set_tile_property(struct drm_connector *connector)
4749 struct drm_device *dev = connector->dev;
4753 if (!connector->has_tile) {
4754 ret = drm_property_replace_global_blob(dev,
4755 &connector->tile_blob_ptr,
4759 dev->mode_config.tile_property);
4763 snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4764 connector->tile_group->id, connector->tile_is_single_monitor,
4765 connector->num_h_tile, connector->num_v_tile,
4766 connector->tile_h_loc, connector->tile_v_loc,
4767 connector->tile_h_size, connector->tile_v_size);
4769 ret = drm_property_replace_global_blob(dev,
4770 &connector->tile_blob_ptr,
4774 dev->mode_config.tile_property);
4777 EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
4780 * drm_mode_connector_update_edid_property - update the edid property of a connector
4781 * @connector: drm connector
4782 * @edid: new value of the edid property
4784 * This function creates a new blob modeset object and assigns its id to the
4785 * connector's edid property.
4788 * Zero on success, negative errno on failure.
4790 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4791 const struct edid *edid)
4793 struct drm_device *dev = connector->dev;
4797 /* ignore requests to set edid when overridden */
4798 if (connector->override_edid)
4802 size = EDID_LENGTH * (1 + edid->extensions);
4804 ret = drm_property_replace_global_blob(dev,
4805 &connector->edid_blob_ptr,
4809 dev->mode_config.edid_property);
4812 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4814 /* Some properties could refer to dynamic refcnt'd objects, or things that
4815 * need special locking to handle lifetime issues (ie. to ensure the prop
4816 * value doesn't become invalid part way through the property update due to
4817 * race). The value returned by reference via 'obj' should be passed back
4818 * to drm_property_change_valid_put() after the property is set (and the
4819 * object to which the property is attached has a chance to take it's own
4822 bool drm_property_change_valid_get(struct drm_property *property,
4823 uint64_t value, struct drm_mode_object **ref)
4827 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4832 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
4833 if (value < property->values[0] || value > property->values[1])
4836 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4837 int64_t svalue = U642I64(value);
4839 if (svalue < U642I64(property->values[0]) ||
4840 svalue > U642I64(property->values[1]))
4843 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4844 uint64_t valid_mask = 0;
4846 for (i = 0; i < property->num_values; i++)
4847 valid_mask |= (1ULL << property->values[i]);
4848 return !(value & ~valid_mask);
4849 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
4850 struct drm_property_blob *blob;
4855 blob = drm_property_lookup_blob(property->dev, value);
4862 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4863 /* a zero value for an object property translates to null: */
4867 /* handle refcnt'd objects specially: */
4868 if (property->values[0] == DRM_MODE_OBJECT_FB) {
4869 struct drm_framebuffer *fb;
4870 fb = drm_framebuffer_lookup(property->dev, value);
4878 return _object_find(property->dev, value, property->values[0]) != NULL;
4882 for (i = 0; i < property->num_values; i++)
4883 if (property->values[i] == value)
4888 void drm_property_change_valid_put(struct drm_property *property,
4889 struct drm_mode_object *ref)
4894 if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4895 if (property->values[0] == DRM_MODE_OBJECT_FB)
4896 drm_framebuffer_unreference(obj_to_fb(ref));
4897 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4898 drm_property_unreference_blob(obj_to_blob(ref));
4902 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4905 * @file_priv: DRM file info
4907 * This function sets the current value for a connectors's property. It also
4908 * calls into a driver's ->set_property callback to update the hardware state
4910 * Called by the user via ioctl.
4913 * Zero on success, negative errno on failure.
4915 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4916 void *data, struct drm_file *file_priv)
4918 struct drm_mode_connector_set_property *conn_set_prop = data;
4919 struct drm_mode_obj_set_property obj_set_prop = {
4920 .value = conn_set_prop->value,
4921 .prop_id = conn_set_prop->prop_id,
4922 .obj_id = conn_set_prop->connector_id,
4923 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4926 /* It does all the locking and checking we need */
4927 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
4930 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4931 struct drm_property *property,
4935 struct drm_connector *connector = obj_to_connector(obj);
4937 /* Do DPMS ourselves */
4938 if (property == connector->dev->mode_config.dpms_property) {
4939 ret = (*connector->funcs->dpms)(connector, (int)value);
4940 } else if (connector->funcs->set_property)
4941 ret = connector->funcs->set_property(connector, property, value);
4943 /* store the property value if successful */
4945 drm_object_property_set_value(&connector->base, property, value);
4949 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4950 struct drm_property *property,
4954 struct drm_crtc *crtc = obj_to_crtc(obj);
4956 if (crtc->funcs->set_property)
4957 ret = crtc->funcs->set_property(crtc, property, value);
4959 drm_object_property_set_value(obj, property, value);
4965 * drm_mode_plane_set_obj_prop - set the value of a property
4966 * @plane: drm plane object to set property value for
4967 * @property: property to set
4968 * @value: value the property should be set to
4970 * This functions sets a given property on a given plane object. This function
4971 * calls the driver's ->set_property callback and changes the software state of
4972 * the property if the callback succeeds.
4975 * Zero on success, error code on failure.
4977 int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4978 struct drm_property *property,
4982 struct drm_mode_object *obj = &plane->base;
4984 if (plane->funcs->set_property)
4985 ret = plane->funcs->set_property(plane, property, value);
4987 drm_object_property_set_value(obj, property, value);
4991 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4994 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4997 * @file_priv: DRM file info
4999 * This function retrieves the current value for an object's property. Compared
5000 * to the connector specific ioctl this one is extended to also work on crtc and
5003 * Called by the user via ioctl.
5006 * Zero on success, negative errno on failure.
5008 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
5009 struct drm_file *file_priv)
5011 struct drm_mode_obj_get_properties *arg = data;
5012 struct drm_mode_object *obj;
5015 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5018 drm_modeset_lock_all(dev);
5020 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
5025 if (!obj->properties) {
5030 ret = get_properties(obj, file_priv->atomic,
5031 (uint32_t __user *)(unsigned long)(arg->props_ptr),
5032 (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
5036 drm_modeset_unlock_all(dev);
5041 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
5044 * @file_priv: DRM file info
5046 * This function sets the current value for an object's property. It also calls
5047 * into a driver's ->set_property callback to update the hardware state.
5048 * Compared to the connector specific ioctl this one is extended to also work on
5049 * crtc and plane objects.
5051 * Called by the user via ioctl.
5054 * Zero on success, negative errno on failure.
5056 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
5057 struct drm_file *file_priv)
5059 struct drm_mode_obj_set_property *arg = data;
5060 struct drm_mode_object *arg_obj;
5061 struct drm_mode_object *prop_obj;
5062 struct drm_property *property;
5063 int i, ret = -EINVAL;
5064 struct drm_mode_object *ref;
5066 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5069 drm_modeset_lock_all(dev);
5071 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
5076 if (!arg_obj->properties)
5079 for (i = 0; i < arg_obj->properties->count; i++)
5080 if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
5083 if (i == arg_obj->properties->count)
5086 prop_obj = drm_mode_object_find(dev, arg->prop_id,
5087 DRM_MODE_OBJECT_PROPERTY);
5092 property = obj_to_property(prop_obj);
5094 if (!drm_property_change_valid_get(property, arg->value, &ref))
5097 switch (arg_obj->type) {
5098 case DRM_MODE_OBJECT_CONNECTOR:
5099 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
5102 case DRM_MODE_OBJECT_CRTC:
5103 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
5105 case DRM_MODE_OBJECT_PLANE:
5106 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
5107 property, arg->value);
5111 drm_property_change_valid_put(property, ref);
5114 drm_modeset_unlock_all(dev);
5119 * drm_mode_connector_attach_encoder - attach a connector to an encoder
5120 * @connector: connector to attach
5121 * @encoder: encoder to attach @connector to
5123 * This function links up a connector to an encoder. Note that the routing
5124 * restrictions between encoders and crtcs are exposed to userspace through the
5125 * possible_clones and possible_crtcs bitmasks.
5128 * Zero on success, negative errno on failure.
5130 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
5131 struct drm_encoder *encoder)
5136 * In the past, drivers have attempted to model the static association
5137 * of connector to encoder in simple connector/encoder devices using a
5138 * direct assignment of connector->encoder = encoder. This connection
5139 * is a logical one and the responsibility of the core, so drivers are
5140 * expected not to mess with this.
5142 * Note that the error return should've been enough here, but a large
5143 * majority of drivers ignores the return value, so add in a big WARN
5144 * to get people's attention.
5146 if (WARN_ON(connector->encoder))
5149 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
5150 if (connector->encoder_ids[i] == 0) {
5151 connector->encoder_ids[i] = encoder->base.id;
5157 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
5160 * drm_mode_crtc_set_gamma_size - set the gamma table size
5161 * @crtc: CRTC to set the gamma table size for
5162 * @gamma_size: size of the gamma table
5164 * Drivers which support gamma tables should set this to the supported gamma
5165 * table size when initializing the CRTC. Currently the drm core only supports a
5166 * fixed gamma table size.
5169 * Zero on success, negative errno on failure.
5171 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
5174 crtc->gamma_size = gamma_size;
5176 crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
5178 if (!crtc->gamma_store) {
5179 crtc->gamma_size = 0;
5185 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
5188 * drm_mode_gamma_set_ioctl - set the gamma table
5191 * @file_priv: DRM file info
5193 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
5194 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
5196 * Called by the user via ioctl.
5199 * Zero on success, negative errno on failure.
5201 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
5202 void *data, struct drm_file *file_priv)
5204 struct drm_mode_crtc_lut *crtc_lut = data;
5205 struct drm_crtc *crtc;
5206 void *r_base, *g_base, *b_base;
5210 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5213 drm_modeset_lock_all(dev);
5214 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5220 if (crtc->funcs->gamma_set == NULL) {
5225 /* memcpy into gamma store */
5226 if (crtc_lut->gamma_size != crtc->gamma_size) {
5231 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5232 r_base = crtc->gamma_store;
5233 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
5238 g_base = r_base + size;
5239 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
5244 b_base = g_base + size;
5245 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
5250 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
5253 drm_modeset_unlock_all(dev);
5259 * drm_mode_gamma_get_ioctl - get the gamma table
5262 * @file_priv: DRM file info
5264 * Copy the current gamma table into the storage provided. This also provides
5265 * the gamma table size the driver expects, which can be used to size the
5266 * allocated storage.
5268 * Called by the user via ioctl.
5271 * Zero on success, negative errno on failure.
5273 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
5274 void *data, struct drm_file *file_priv)
5276 struct drm_mode_crtc_lut *crtc_lut = data;
5277 struct drm_crtc *crtc;
5278 void *r_base, *g_base, *b_base;
5282 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5285 drm_modeset_lock_all(dev);
5286 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5292 /* memcpy into gamma store */
5293 if (crtc_lut->gamma_size != crtc->gamma_size) {
5298 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5299 r_base = crtc->gamma_store;
5300 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
5305 g_base = r_base + size;
5306 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
5311 b_base = g_base + size;
5312 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
5317 drm_modeset_unlock_all(dev);
5322 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
5325 * @file_priv: DRM file info
5327 * This schedules an asynchronous update on a given CRTC, called page flip.
5328 * Optionally a drm event is generated to signal the completion of the event.
5329 * Generic drivers cannot assume that a pageflip with changed framebuffer
5330 * properties (including driver specific metadata like tiling layout) will work,
5331 * but some drivers support e.g. pixel format changes through the pageflip
5334 * Called by the user via ioctl.
5337 * Zero on success, negative errno on failure.
5339 int drm_mode_page_flip_ioctl(struct drm_device *dev,
5340 void *data, struct drm_file *file_priv)
5342 struct drm_mode_crtc_page_flip *page_flip = data;
5343 struct drm_crtc *crtc;
5344 struct drm_framebuffer *fb = NULL;
5345 struct drm_pending_vblank_event *e = NULL;
5348 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
5349 page_flip->reserved != 0)
5352 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
5355 crtc = drm_crtc_find(dev, page_flip->crtc_id);
5359 drm_modeset_lock_crtc(crtc, crtc->primary);
5360 if (crtc->primary->fb == NULL) {
5361 /* The framebuffer is currently unbound, presumably
5362 * due to a hotplug event, that userspace has not
5369 if (crtc->funcs->page_flip == NULL)
5372 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
5379 const struct drm_plane_state *state = crtc->primary->state;
5381 ret = check_src_coords(state->src_x, state->src_y,
5382 state->src_w, state->src_h, fb);
5384 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
5389 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
5390 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
5395 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
5396 e = kzalloc(sizeof *e, GFP_KERNEL);
5401 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
5402 e->event.base.length = sizeof(e->event);
5403 e->event.user_data = page_flip->user_data;
5404 ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base);
5411 crtc->primary->old_fb = crtc->primary->fb;
5412 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
5414 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT)
5415 drm_event_cancel_free(dev, &e->base);
5416 /* Keep the old fb, don't unref it. */
5417 crtc->primary->old_fb = NULL;
5419 crtc->primary->fb = fb;
5420 /* Unref only the old framebuffer. */
5426 drm_framebuffer_unreference(fb);
5427 if (crtc->primary->old_fb)
5428 drm_framebuffer_unreference(crtc->primary->old_fb);
5429 crtc->primary->old_fb = NULL;
5430 drm_modeset_unlock_crtc(crtc);
5436 * drm_mode_config_reset - call ->reset callbacks
5439 * This functions calls all the crtc's, encoder's and connector's ->reset
5440 * callback. Drivers can use this in e.g. their driver load or resume code to
5441 * reset hardware and software state.
5443 void drm_mode_config_reset(struct drm_device *dev)
5445 struct drm_crtc *crtc;
5446 struct drm_plane *plane;
5447 struct drm_encoder *encoder;
5448 struct drm_connector *connector;
5450 drm_for_each_plane(plane, dev)
5451 if (plane->funcs->reset)
5452 plane->funcs->reset(plane);
5454 drm_for_each_crtc(crtc, dev)
5455 if (crtc->funcs->reset)
5456 crtc->funcs->reset(crtc);
5458 drm_for_each_encoder(encoder, dev)
5459 if (encoder->funcs->reset)
5460 encoder->funcs->reset(encoder);
5462 mutex_lock(&dev->mode_config.mutex);
5463 drm_for_each_connector(connector, dev)
5464 if (connector->funcs->reset)
5465 connector->funcs->reset(connector);
5466 mutex_unlock(&dev->mode_config.mutex);
5468 EXPORT_SYMBOL(drm_mode_config_reset);
5471 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5474 * @file_priv: DRM file info
5476 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5477 * TTM or something else entirely) and returns the resulting buffer handle. This
5478 * handle can then be wrapped up into a framebuffer modeset object.
5480 * Note that userspace is not allowed to use such objects for render
5481 * acceleration - drivers must create their own private ioctls for such a use
5484 * Called by the user via ioctl.
5487 * Zero on success, negative errno on failure.
5489 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
5490 void *data, struct drm_file *file_priv)
5492 struct drm_mode_create_dumb *args = data;
5493 u32 cpp, stride, size;
5495 if (!dev->driver->dumb_create)
5497 if (!args->width || !args->height || !args->bpp)
5500 /* overflow checks for 32bit size calculations */
5501 /* NOTE: DIV_ROUND_UP() can overflow */
5502 cpp = DIV_ROUND_UP(args->bpp, 8);
5503 if (!cpp || cpp > 0xffffffffU / args->width)
5505 stride = cpp * args->width;
5506 if (args->height > 0xffffffffU / stride)
5509 /* test for wrap-around */
5510 size = args->height * stride;
5511 if (PAGE_ALIGN(size) == 0)
5515 * handle, pitch and size are output parameters. Zero them out to
5516 * prevent drivers from accidentally using uninitialized data. Since
5517 * not all existing userspace is clearing these fields properly we
5518 * cannot reject IOCTL with garbage in them.
5524 return dev->driver->dumb_create(file_priv, dev, args);
5528 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5531 * @file_priv: DRM file info
5533 * Allocate an offset in the drm device node's address space to be able to
5534 * memory map a dumb buffer.
5536 * Called by the user via ioctl.
5539 * Zero on success, negative errno on failure.
5541 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
5542 void *data, struct drm_file *file_priv)
5544 struct drm_mode_map_dumb *args = data;
5546 /* call driver ioctl to get mmap offset */
5547 if (!dev->driver->dumb_map_offset)
5550 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
5554 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5557 * @file_priv: DRM file info
5559 * This destroys the userspace handle for the given dumb backing storage buffer.
5560 * Since buffer objects must be reference counted in the kernel a buffer object
5561 * won't be immediately freed if a framebuffer modeset object still uses it.
5563 * Called by the user via ioctl.
5566 * Zero on success, negative errno on failure.
5568 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
5569 void *data, struct drm_file *file_priv)
5571 struct drm_mode_destroy_dumb *args = data;
5573 if (!dev->driver->dumb_destroy)
5576 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
5580 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5581 * @format: pixel format (DRM_FORMAT_*)
5582 * @depth: storage for the depth value
5583 * @bpp: storage for the bpp value
5585 * This only supports RGB formats here for compat with code that doesn't use
5586 * pixel formats directly yet.
5588 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
5593 case DRM_FORMAT_RGB332:
5594 case DRM_FORMAT_BGR233:
5598 case DRM_FORMAT_XRGB1555:
5599 case DRM_FORMAT_XBGR1555:
5600 case DRM_FORMAT_RGBX5551:
5601 case DRM_FORMAT_BGRX5551:
5602 case DRM_FORMAT_ARGB1555:
5603 case DRM_FORMAT_ABGR1555:
5604 case DRM_FORMAT_RGBA5551:
5605 case DRM_FORMAT_BGRA5551:
5609 case DRM_FORMAT_RGB565:
5610 case DRM_FORMAT_BGR565:
5614 case DRM_FORMAT_RGB888:
5615 case DRM_FORMAT_BGR888:
5619 case DRM_FORMAT_XRGB8888:
5620 case DRM_FORMAT_XBGR8888:
5621 case DRM_FORMAT_RGBX8888:
5622 case DRM_FORMAT_BGRX8888:
5626 case DRM_FORMAT_XRGB2101010:
5627 case DRM_FORMAT_XBGR2101010:
5628 case DRM_FORMAT_RGBX1010102:
5629 case DRM_FORMAT_BGRX1010102:
5630 case DRM_FORMAT_ARGB2101010:
5631 case DRM_FORMAT_ABGR2101010:
5632 case DRM_FORMAT_RGBA1010102:
5633 case DRM_FORMAT_BGRA1010102:
5637 case DRM_FORMAT_ARGB8888:
5638 case DRM_FORMAT_ABGR8888:
5639 case DRM_FORMAT_RGBA8888:
5640 case DRM_FORMAT_BGRA8888:
5645 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5646 drm_get_format_name(format));
5652 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
5655 * drm_format_num_planes - get the number of planes for format
5656 * @format: pixel format (DRM_FORMAT_*)
5659 * The number of planes used by the specified pixel format.
5661 int drm_format_num_planes(uint32_t format)
5664 case DRM_FORMAT_YUV410:
5665 case DRM_FORMAT_YVU410:
5666 case DRM_FORMAT_YUV411:
5667 case DRM_FORMAT_YVU411:
5668 case DRM_FORMAT_YUV420:
5669 case DRM_FORMAT_YVU420:
5670 case DRM_FORMAT_YUV422:
5671 case DRM_FORMAT_YVU422:
5672 case DRM_FORMAT_YUV444:
5673 case DRM_FORMAT_YVU444:
5675 case DRM_FORMAT_NV12:
5676 case DRM_FORMAT_NV21:
5677 case DRM_FORMAT_NV16:
5678 case DRM_FORMAT_NV61:
5679 case DRM_FORMAT_NV24:
5680 case DRM_FORMAT_NV42:
5686 EXPORT_SYMBOL(drm_format_num_planes);
5689 * drm_format_plane_cpp - determine the bytes per pixel value
5690 * @format: pixel format (DRM_FORMAT_*)
5691 * @plane: plane index
5694 * The bytes per pixel value for the specified plane.
5696 int drm_format_plane_cpp(uint32_t format, int plane)
5701 if (plane >= drm_format_num_planes(format))
5705 case DRM_FORMAT_YUYV:
5706 case DRM_FORMAT_YVYU:
5707 case DRM_FORMAT_UYVY:
5708 case DRM_FORMAT_VYUY:
5710 case DRM_FORMAT_NV12:
5711 case DRM_FORMAT_NV21:
5712 case DRM_FORMAT_NV16:
5713 case DRM_FORMAT_NV61:
5714 case DRM_FORMAT_NV24:
5715 case DRM_FORMAT_NV42:
5716 return plane ? 2 : 1;
5717 case DRM_FORMAT_YUV410:
5718 case DRM_FORMAT_YVU410:
5719 case DRM_FORMAT_YUV411:
5720 case DRM_FORMAT_YVU411:
5721 case DRM_FORMAT_YUV420:
5722 case DRM_FORMAT_YVU420:
5723 case DRM_FORMAT_YUV422:
5724 case DRM_FORMAT_YVU422:
5725 case DRM_FORMAT_YUV444:
5726 case DRM_FORMAT_YVU444:
5729 drm_fb_get_bpp_depth(format, &depth, &bpp);
5733 EXPORT_SYMBOL(drm_format_plane_cpp);
5736 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5737 * @format: pixel format (DRM_FORMAT_*)
5740 * The horizontal chroma subsampling factor for the
5741 * specified pixel format.
5743 int drm_format_horz_chroma_subsampling(uint32_t format)
5746 case DRM_FORMAT_YUV411:
5747 case DRM_FORMAT_YVU411:
5748 case DRM_FORMAT_YUV410:
5749 case DRM_FORMAT_YVU410:
5751 case DRM_FORMAT_YUYV:
5752 case DRM_FORMAT_YVYU:
5753 case DRM_FORMAT_UYVY:
5754 case DRM_FORMAT_VYUY:
5755 case DRM_FORMAT_NV12:
5756 case DRM_FORMAT_NV21:
5757 case DRM_FORMAT_NV16:
5758 case DRM_FORMAT_NV61:
5759 case DRM_FORMAT_YUV422:
5760 case DRM_FORMAT_YVU422:
5761 case DRM_FORMAT_YUV420:
5762 case DRM_FORMAT_YVU420:
5768 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5771 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5772 * @format: pixel format (DRM_FORMAT_*)
5775 * The vertical chroma subsampling factor for the
5776 * specified pixel format.
5778 int drm_format_vert_chroma_subsampling(uint32_t format)
5781 case DRM_FORMAT_YUV410:
5782 case DRM_FORMAT_YVU410:
5784 case DRM_FORMAT_YUV420:
5785 case DRM_FORMAT_YVU420:
5786 case DRM_FORMAT_NV12:
5787 case DRM_FORMAT_NV21:
5793 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
5796 * drm_format_plane_width - width of the plane given the first plane
5797 * @width: width of the first plane
5798 * @format: pixel format
5799 * @plane: plane index
5802 * The width of @plane, given that the width of the first plane is @width.
5804 int drm_format_plane_width(int width, uint32_t format, int plane)
5806 if (plane >= drm_format_num_planes(format))
5812 return width / drm_format_horz_chroma_subsampling(format);
5814 EXPORT_SYMBOL(drm_format_plane_width);
5817 * drm_format_plane_height - height of the plane given the first plane
5818 * @height: height of the first plane
5819 * @format: pixel format
5820 * @plane: plane index
5823 * The height of @plane, given that the height of the first plane is @height.
5825 int drm_format_plane_height(int height, uint32_t format, int plane)
5827 if (plane >= drm_format_num_planes(format))
5833 return height / drm_format_vert_chroma_subsampling(format);
5835 EXPORT_SYMBOL(drm_format_plane_height);
5838 * drm_rotation_simplify() - Try to simplify the rotation
5839 * @rotation: Rotation to be simplified
5840 * @supported_rotations: Supported rotations
5842 * Attempt to simplify the rotation to a form that is supported.
5843 * Eg. if the hardware supports everything except DRM_REFLECT_X
5844 * one could call this function like this:
5846 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5847 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5848 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5850 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5851 * transforms the hardware supports, this function may not
5852 * be able to produce a supported transform, so the caller should
5853 * check the result afterwards.
5855 unsigned int drm_rotation_simplify(unsigned int rotation,
5856 unsigned int supported_rotations)
5858 if (rotation & ~supported_rotations) {
5859 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5860 rotation = (rotation & DRM_REFLECT_MASK) |
5861 BIT((ffs(rotation & DRM_ROTATE_MASK) + 1) % 4);
5866 EXPORT_SYMBOL(drm_rotation_simplify);
5869 * drm_mode_config_init - initialize DRM mode_configuration structure
5872 * Initialize @dev's mode_config structure, used for tracking the graphics
5873 * configuration of @dev.
5875 * Since this initializes the modeset locks, no locking is possible. Which is no
5876 * problem, since this should happen single threaded at init time. It is the
5877 * driver's problem to ensure this guarantee.
5880 void drm_mode_config_init(struct drm_device *dev)
5882 mutex_init(&dev->mode_config.mutex);
5883 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
5884 mutex_init(&dev->mode_config.idr_mutex);
5885 mutex_init(&dev->mode_config.fb_lock);
5886 mutex_init(&dev->mode_config.blob_lock);
5887 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5888 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5889 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5890 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5891 INIT_LIST_HEAD(&dev->mode_config.property_list);
5892 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5893 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5894 idr_init(&dev->mode_config.crtc_idr);
5895 idr_init(&dev->mode_config.tile_idr);
5896 ida_init(&dev->mode_config.connector_ida);
5898 drm_modeset_lock_all(dev);
5899 drm_mode_create_standard_properties(dev);
5900 drm_modeset_unlock_all(dev);
5902 /* Just to be sure */
5903 dev->mode_config.num_fb = 0;
5904 dev->mode_config.num_connector = 0;
5905 dev->mode_config.num_crtc = 0;
5906 dev->mode_config.num_encoder = 0;
5907 dev->mode_config.num_overlay_plane = 0;
5908 dev->mode_config.num_total_plane = 0;
5910 EXPORT_SYMBOL(drm_mode_config_init);
5913 * drm_mode_config_cleanup - free up DRM mode_config info
5916 * Free up all the connectors and CRTCs associated with this DRM device, then
5917 * free up the framebuffers and associated buffer objects.
5919 * Note that since this /should/ happen single-threaded at driver/device
5920 * teardown time, no locking is required. It's the driver's job to ensure that
5921 * this guarantee actually holds true.
5923 * FIXME: cleanup any dangling user buffer objects too
5925 void drm_mode_config_cleanup(struct drm_device *dev)
5927 struct drm_connector *connector, *ot;
5928 struct drm_crtc *crtc, *ct;
5929 struct drm_encoder *encoder, *enct;
5930 struct drm_framebuffer *fb, *fbt;
5931 struct drm_property *property, *pt;
5932 struct drm_property_blob *blob, *bt;
5933 struct drm_plane *plane, *plt;
5935 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5937 encoder->funcs->destroy(encoder);
5940 list_for_each_entry_safe(connector, ot,
5941 &dev->mode_config.connector_list, head) {
5942 connector->funcs->destroy(connector);
5945 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5947 drm_property_destroy(dev, property);
5950 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5952 plane->funcs->destroy(plane);
5955 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5956 crtc->funcs->destroy(crtc);
5959 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5961 drm_property_unreference_blob(blob);
5965 * Single-threaded teardown context, so it's not required to grab the
5966 * fb_lock to protect against concurrent fb_list access. Contrary, it
5967 * would actually deadlock with the drm_framebuffer_cleanup function.
5969 * Also, if there are any framebuffers left, that's a driver leak now,
5970 * so politely WARN about this.
5972 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5973 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5974 drm_framebuffer_free(&fb->refcount);
5977 ida_destroy(&dev->mode_config.connector_ida);
5978 idr_destroy(&dev->mode_config.tile_idr);
5979 idr_destroy(&dev->mode_config.crtc_idr);
5980 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
5982 EXPORT_SYMBOL(drm_mode_config_cleanup);
5984 struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5985 unsigned int supported_rotations)
5987 static const struct drm_prop_enum_list props[] = {
5988 { DRM_ROTATE_0, "rotate-0" },
5989 { DRM_ROTATE_90, "rotate-90" },
5990 { DRM_ROTATE_180, "rotate-180" },
5991 { DRM_ROTATE_270, "rotate-270" },
5992 { DRM_REFLECT_X, "reflect-x" },
5993 { DRM_REFLECT_Y, "reflect-y" },
5996 return drm_property_create_bitmask(dev, 0, "rotation",
5997 props, ARRAY_SIZE(props),
5998 supported_rotations);
6000 EXPORT_SYMBOL(drm_mode_create_rotation_property);
6005 * Tile groups are used to represent tiled monitors with a unique
6006 * integer identifier. Tiled monitors using DisplayID v1.3 have
6007 * a unique 8-byte handle, we store this in a tile group, so we
6008 * have a common identifier for all tiles in a monitor group.
6010 static void drm_tile_group_free(struct kref *kref)
6012 struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
6013 struct drm_device *dev = tg->dev;
6014 mutex_lock(&dev->mode_config.idr_mutex);
6015 idr_remove(&dev->mode_config.tile_idr, tg->id);
6016 mutex_unlock(&dev->mode_config.idr_mutex);
6021 * drm_mode_put_tile_group - drop a reference to a tile group.
6023 * @tg: tile group to drop reference to.
6025 * drop reference to tile group and free if 0.
6027 void drm_mode_put_tile_group(struct drm_device *dev,
6028 struct drm_tile_group *tg)
6030 kref_put(&tg->refcount, drm_tile_group_free);
6034 * drm_mode_get_tile_group - get a reference to an existing tile group
6036 * @topology: 8-bytes unique per monitor.
6038 * Use the unique bytes to get a reference to an existing tile group.
6041 * tile group or NULL if not found.
6043 struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
6046 struct drm_tile_group *tg;
6048 mutex_lock(&dev->mode_config.idr_mutex);
6049 idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
6050 if (!memcmp(tg->group_data, topology, 8)) {
6051 if (!kref_get_unless_zero(&tg->refcount))
6053 mutex_unlock(&dev->mode_config.idr_mutex);
6057 mutex_unlock(&dev->mode_config.idr_mutex);
6060 EXPORT_SYMBOL(drm_mode_get_tile_group);
6063 * drm_mode_create_tile_group - create a tile group from a displayid description
6065 * @topology: 8-bytes unique per monitor.
6067 * Create a tile group for the unique monitor, and get a unique
6068 * identifier for the tile group.
6071 * new tile group or error.
6073 struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
6076 struct drm_tile_group *tg;
6079 tg = kzalloc(sizeof(*tg), GFP_KERNEL);
6081 return ERR_PTR(-ENOMEM);
6083 kref_init(&tg->refcount);
6084 memcpy(tg->group_data, topology, 8);
6087 mutex_lock(&dev->mode_config.idr_mutex);
6088 ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
6096 mutex_unlock(&dev->mode_config.idr_mutex);
6099 EXPORT_SYMBOL(drm_mode_create_tile_group);