2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
6 * DRM core CRTC related functions
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
32 #include <linux/ctype.h>
33 #include <linux/list.h>
34 #include <linux/slab.h>
35 #include <linux/export.h>
37 #include <drm/drm_crtc.h>
38 #include <drm/drm_edid.h>
39 #include <drm/drm_fourcc.h>
40 #include <drm/drm_modeset_lock.h>
41 #include <drm/drm_atomic.h>
43 #include "drm_crtc_internal.h"
44 #include "drm_internal.h"
46 static struct drm_framebuffer *
47 internal_framebuffer_create(struct drm_device *dev,
48 const struct drm_mode_fb_cmd2 *r,
49 struct drm_file *file_priv);
51 /* Avoid boilerplate. I'm tired of typing. */
52 #define DRM_ENUM_NAME_FN(fnname, list) \
53 const char *fnname(int val) \
56 for (i = 0; i < ARRAY_SIZE(list); i++) { \
57 if (list[i].type == val) \
58 return list[i].name; \
66 static const struct drm_prop_enum_list drm_dpms_enum_list[] = {
67 { DRM_MODE_DPMS_ON, "On" },
68 { DRM_MODE_DPMS_STANDBY, "Standby" },
69 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
70 { DRM_MODE_DPMS_OFF, "Off" }
73 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
75 static const struct drm_prop_enum_list drm_plane_type_enum_list[] = {
76 { DRM_PLANE_TYPE_OVERLAY, "Overlay" },
77 { DRM_PLANE_TYPE_PRIMARY, "Primary" },
78 { DRM_PLANE_TYPE_CURSOR, "Cursor" },
84 static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] = {
85 { DRM_MODE_SCALE_NONE, "None" },
86 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
87 { DRM_MODE_SCALE_CENTER, "Center" },
88 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
91 static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = {
92 { DRM_MODE_PICTURE_ASPECT_NONE, "Automatic" },
93 { DRM_MODE_PICTURE_ASPECT_4_3, "4:3" },
94 { DRM_MODE_PICTURE_ASPECT_16_9, "16:9" },
98 * Non-global properties, but "required" for certain connectors.
100 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = {
101 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
102 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
103 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
106 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
108 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = {
109 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
110 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
111 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
114 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
115 drm_dvi_i_subconnector_enum_list)
117 static const struct drm_prop_enum_list drm_tv_select_enum_list[] = {
118 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
119 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
120 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
121 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
122 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
125 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
127 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = {
128 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
129 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
130 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
131 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
132 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
135 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
136 drm_tv_subconnector_enum_list)
138 static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
139 { DRM_MODE_DIRTY_OFF, "Off" },
140 { DRM_MODE_DIRTY_ON, "On" },
141 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
144 struct drm_conn_prop_enum_list {
151 * Connector and encoder types.
153 static struct drm_conn_prop_enum_list drm_connector_enum_list[] = {
154 { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
155 { DRM_MODE_CONNECTOR_VGA, "VGA" },
156 { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
157 { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
158 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
159 { DRM_MODE_CONNECTOR_Composite, "Composite" },
160 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
161 { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
162 { DRM_MODE_CONNECTOR_Component, "Component" },
163 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
164 { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
165 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
166 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
167 { DRM_MODE_CONNECTOR_TV, "TV" },
168 { DRM_MODE_CONNECTOR_eDP, "eDP" },
169 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
170 { DRM_MODE_CONNECTOR_DSI, "DSI" },
173 static const struct drm_prop_enum_list drm_encoder_enum_list[] = {
174 { DRM_MODE_ENCODER_NONE, "None" },
175 { DRM_MODE_ENCODER_DAC, "DAC" },
176 { DRM_MODE_ENCODER_TMDS, "TMDS" },
177 { DRM_MODE_ENCODER_LVDS, "LVDS" },
178 { DRM_MODE_ENCODER_TVDAC, "TV" },
179 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
180 { DRM_MODE_ENCODER_DSI, "DSI" },
181 { DRM_MODE_ENCODER_DPMST, "DP MST" },
184 static const struct drm_prop_enum_list drm_subpixel_enum_list[] = {
185 { SubPixelUnknown, "Unknown" },
186 { SubPixelHorizontalRGB, "Horizontal RGB" },
187 { SubPixelHorizontalBGR, "Horizontal BGR" },
188 { SubPixelVerticalRGB, "Vertical RGB" },
189 { SubPixelVerticalBGR, "Vertical BGR" },
190 { SubPixelNone, "None" },
193 void drm_connector_ida_init(void)
197 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
198 ida_init(&drm_connector_enum_list[i].ida);
201 void drm_connector_ida_destroy(void)
205 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
206 ida_destroy(&drm_connector_enum_list[i].ida);
210 * drm_get_connector_status_name - return a string for connector status
211 * @status: connector status to compute name of
213 * In contrast to the other drm_get_*_name functions this one here returns a
214 * const pointer and hence is threadsafe.
216 const char *drm_get_connector_status_name(enum drm_connector_status status)
218 if (status == connector_status_connected)
220 else if (status == connector_status_disconnected)
221 return "disconnected";
225 EXPORT_SYMBOL(drm_get_connector_status_name);
228 * drm_get_subpixel_order_name - return a string for a given subpixel enum
229 * @order: enum of subpixel_order
231 * Note you could abuse this and return something out of bounds, but that
232 * would be a caller error. No unscrubbed user data should make it here.
234 const char *drm_get_subpixel_order_name(enum subpixel_order order)
236 return drm_subpixel_enum_list[order].name;
238 EXPORT_SYMBOL(drm_get_subpixel_order_name);
240 static char printable_char(int c)
242 return isascii(c) && isprint(c) ? c : '?';
246 * drm_get_format_name - return a string for drm fourcc format
247 * @format: format to compute name of
249 * Note that the buffer used by this function is globally shared and owned by
250 * the function itself.
252 * FIXME: This isn't really multithreading safe.
254 const char *drm_get_format_name(uint32_t format)
258 snprintf(buf, sizeof(buf),
259 "%c%c%c%c %s-endian (0x%08x)",
260 printable_char(format & 0xff),
261 printable_char((format >> 8) & 0xff),
262 printable_char((format >> 16) & 0xff),
263 printable_char((format >> 24) & 0x7f),
264 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
269 EXPORT_SYMBOL(drm_get_format_name);
272 * Internal function to assign a slot in the object idr and optionally
273 * register the object into the idr.
275 static int drm_mode_object_get_reg(struct drm_device *dev,
276 struct drm_mode_object *obj,
279 void (*obj_free_cb)(struct kref *kref))
283 mutex_lock(&dev->mode_config.idr_mutex);
284 ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
287 * Set up the object linking under the protection of the idr
288 * lock so that other users can't see inconsistent state.
291 obj->type = obj_type;
293 obj->free_cb = obj_free_cb;
294 kref_init(&obj->refcount);
297 mutex_unlock(&dev->mode_config.idr_mutex);
299 return ret < 0 ? ret : 0;
303 * drm_mode_object_get - allocate a new modeset identifier
305 * @obj: object pointer, used to generate unique ID
306 * @obj_type: object type
308 * Create a unique identifier based on @ptr in @dev's identifier space. Used
309 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
310 * modeset identifiers are _not_ reference counted. Hence don't use this for
311 * reference counted modeset objects like framebuffers.
314 * Zero on success, error code on failure.
316 int drm_mode_object_get(struct drm_device *dev,
317 struct drm_mode_object *obj, uint32_t obj_type)
319 return drm_mode_object_get_reg(dev, obj, obj_type, true, NULL);
322 static void drm_mode_object_register(struct drm_device *dev,
323 struct drm_mode_object *obj)
325 mutex_lock(&dev->mode_config.idr_mutex);
326 idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
327 mutex_unlock(&dev->mode_config.idr_mutex);
331 * drm_mode_object_unregister - free a modeset identifer
333 * @object: object to free
335 * Free @id from @dev's unique identifier pool.
336 * This function can be called multiple times, and guards against
338 * These modeset identifiers are _not_ reference counted. Hence don't use this
339 * for reference counted modeset objects like framebuffers.
341 void drm_mode_object_unregister(struct drm_device *dev,
342 struct drm_mode_object *object)
344 mutex_lock(&dev->mode_config.idr_mutex);
346 idr_remove(&dev->mode_config.crtc_idr, object->id);
349 mutex_unlock(&dev->mode_config.idr_mutex);
352 static struct drm_mode_object *_object_find(struct drm_device *dev,
353 uint32_t id, uint32_t type)
355 struct drm_mode_object *obj = NULL;
357 mutex_lock(&dev->mode_config.idr_mutex);
358 obj = idr_find(&dev->mode_config.crtc_idr, id);
359 if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
361 if (obj && obj->id != id)
363 /* don't leak out unref'd fb's */
365 obj->type == DRM_MODE_OBJECT_BLOB)
368 if (obj && obj->free_cb) {
369 if (!kref_get_unless_zero(&obj->refcount))
372 mutex_unlock(&dev->mode_config.idr_mutex);
378 * drm_mode_object_find - look up a drm object with static lifetime
380 * @id: id of the mode object
381 * @type: type of the mode object
383 * Note that framebuffers cannot be looked up with this functions - since those
384 * are reference counted, they need special treatment. Even with
385 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
386 * rather than WARN_ON()).
388 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
389 uint32_t id, uint32_t type)
391 struct drm_mode_object *obj = NULL;
393 /* Framebuffers are reference counted and need their own lookup
395 WARN_ON(type == DRM_MODE_OBJECT_FB || type == DRM_MODE_OBJECT_BLOB);
396 obj = _object_find(dev, id, type);
399 EXPORT_SYMBOL(drm_mode_object_find);
401 void drm_mode_object_unreference(struct drm_mode_object *obj)
404 DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, atomic_read(&obj->refcount.refcount));
405 kref_put(&obj->refcount, obj->free_cb);
408 EXPORT_SYMBOL(drm_mode_object_unreference);
411 * drm_mode_object_reference - incr the fb refcnt
414 * This function operates only on refcounted objects.
415 * This functions increments the object's refcount.
417 void drm_mode_object_reference(struct drm_mode_object *obj)
420 DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, atomic_read(&obj->refcount.refcount));
421 kref_get(&obj->refcount);
424 EXPORT_SYMBOL(drm_mode_object_reference);
426 static void drm_framebuffer_free(struct kref *kref)
428 struct drm_framebuffer *fb =
429 container_of(kref, struct drm_framebuffer, base.refcount);
430 struct drm_device *dev = fb->dev;
433 * The lookup idr holds a weak reference, which has not necessarily been
434 * removed at this point. Check for that.
436 drm_mode_object_unregister(dev, &fb->base);
438 fb->funcs->destroy(fb);
442 * drm_framebuffer_init - initialize a framebuffer
444 * @fb: framebuffer to be initialized
445 * @funcs: ... with these functions
447 * Allocates an ID for the framebuffer's parent mode object, sets its mode
448 * functions & device file and adds it to the master fd list.
451 * This functions publishes the fb and makes it available for concurrent access
452 * by other users. Which means by this point the fb _must_ be fully set up -
453 * since all the fb attributes are invariant over its lifetime, no further
454 * locking but only correct reference counting is required.
457 * Zero on success, error code on failure.
459 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
460 const struct drm_framebuffer_funcs *funcs)
464 INIT_LIST_HEAD(&fb->filp_head);
468 ret = drm_mode_object_get_reg(dev, &fb->base, DRM_MODE_OBJECT_FB,
469 false, drm_framebuffer_free);
473 mutex_lock(&dev->mode_config.fb_lock);
474 dev->mode_config.num_fb++;
475 list_add(&fb->head, &dev->mode_config.fb_list);
476 mutex_unlock(&dev->mode_config.fb_lock);
478 drm_mode_object_register(dev, &fb->base);
482 EXPORT_SYMBOL(drm_framebuffer_init);
485 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
487 * @id: id of the fb object
489 * If successful, this grabs an additional reference to the framebuffer -
490 * callers need to make sure to eventually unreference the returned framebuffer
491 * again, using @drm_framebuffer_unreference.
493 struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
496 struct drm_mode_object *obj;
497 struct drm_framebuffer *fb = NULL;
499 obj = _object_find(dev, id, DRM_MODE_OBJECT_FB);
504 EXPORT_SYMBOL(drm_framebuffer_lookup);
507 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
508 * @fb: fb to unregister
510 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
511 * those used for fbdev. Note that the caller must hold a reference of it's own,
512 * i.e. the object may not be destroyed through this call (since it'll lead to a
513 * locking inversion).
515 void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
517 struct drm_device *dev;
524 /* Mark fb as reaped and drop idr ref. */
525 drm_mode_object_unregister(dev, &fb->base);
527 EXPORT_SYMBOL(drm_framebuffer_unregister_private);
530 * drm_framebuffer_cleanup - remove a framebuffer object
531 * @fb: framebuffer to remove
533 * Cleanup framebuffer. This function is intended to be used from the drivers
534 * ->destroy callback. It can also be used to clean up driver private
535 * framebuffers embedded into a larger structure.
537 * Note that this function does not remove the fb from active usuage - if it is
538 * still used anywhere, hilarity can ensue since userspace could call getfb on
539 * the id and get back -EINVAL. Obviously no concern at driver unload time.
541 * Also, the framebuffer will not be removed from the lookup idr - for
542 * user-created framebuffers this will happen in in the rmfb ioctl. For
543 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
544 * drm_framebuffer_unregister_private.
546 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
548 struct drm_device *dev = fb->dev;
550 mutex_lock(&dev->mode_config.fb_lock);
552 dev->mode_config.num_fb--;
553 mutex_unlock(&dev->mode_config.fb_lock);
555 EXPORT_SYMBOL(drm_framebuffer_cleanup);
558 * drm_framebuffer_remove - remove and unreference a framebuffer object
559 * @fb: framebuffer to remove
561 * Scans all the CRTCs and planes in @dev's mode_config. If they're
562 * using @fb, removes it, setting it to NULL. Then drops the reference to the
563 * passed-in framebuffer. Might take the modeset locks.
565 * Note that this function optimizes the cleanup away if the caller holds the
566 * last reference to the framebuffer. It is also guaranteed to not take the
567 * modeset locks in this case.
569 void drm_framebuffer_remove(struct drm_framebuffer *fb)
571 struct drm_device *dev;
572 struct drm_crtc *crtc;
573 struct drm_plane *plane;
574 struct drm_mode_set set;
582 WARN_ON(!list_empty(&fb->filp_head));
585 * drm ABI mandates that we remove any deleted framebuffers from active
586 * useage. But since most sane clients only remove framebuffers they no
587 * longer need, try to optimize this away.
589 * Since we're holding a reference ourselves, observing a refcount of 1
590 * means that we're the last holder and can skip it. Also, the refcount
591 * can never increase from 1 again, so we don't need any barriers or
594 * Note that userspace could try to race with use and instate a new
595 * usage _after_ we've cleared all current ones. End result will be an
596 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
599 if (drm_framebuffer_read_refcount(fb) > 1) {
600 drm_modeset_lock_all(dev);
601 /* remove from any CRTC */
602 drm_for_each_crtc(crtc, dev) {
603 if (crtc->primary->fb == fb) {
604 /* should turn off the crtc */
605 memset(&set, 0, sizeof(struct drm_mode_set));
608 ret = drm_mode_set_config_internal(&set);
610 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
614 drm_for_each_plane(plane, dev) {
616 drm_plane_force_disable(plane);
618 drm_modeset_unlock_all(dev);
621 drm_framebuffer_unreference(fb);
623 EXPORT_SYMBOL(drm_framebuffer_remove);
625 DEFINE_WW_CLASS(crtc_ww_class);
627 static unsigned int drm_num_crtcs(struct drm_device *dev)
629 unsigned int num = 0;
630 struct drm_crtc *tmp;
632 drm_for_each_crtc(tmp, dev) {
640 * drm_crtc_init_with_planes - Initialise a new CRTC object with
641 * specified primary and cursor planes.
643 * @crtc: CRTC object to init
644 * @primary: Primary plane for CRTC
645 * @cursor: Cursor plane for CRTC
646 * @funcs: callbacks for the new CRTC
647 * @name: printf style format string for the CRTC name, or NULL for default name
649 * Inits a new object created as base part of a driver crtc object.
652 * Zero on success, error code on failure.
654 int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
655 struct drm_plane *primary,
656 struct drm_plane *cursor,
657 const struct drm_crtc_funcs *funcs,
658 const char *name, ...)
660 struct drm_mode_config *config = &dev->mode_config;
663 WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY);
664 WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR);
669 drm_modeset_lock_init(&crtc->mutex);
670 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
678 crtc->name = kvasprintf(GFP_KERNEL, name, ap);
681 crtc->name = kasprintf(GFP_KERNEL, "crtc-%d",
685 drm_mode_object_unregister(dev, &crtc->base);
689 crtc->base.properties = &crtc->properties;
691 list_add_tail(&crtc->head, &config->crtc_list);
694 crtc->primary = primary;
695 crtc->cursor = cursor;
697 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
699 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
701 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
702 drm_object_attach_property(&crtc->base, config->prop_active, 0);
703 drm_object_attach_property(&crtc->base, config->prop_mode_id, 0);
708 EXPORT_SYMBOL(drm_crtc_init_with_planes);
711 * drm_crtc_cleanup - Clean up the core crtc usage
712 * @crtc: CRTC to cleanup
714 * This function cleans up @crtc and removes it from the DRM mode setting
715 * core. Note that the function does *not* free the crtc structure itself,
716 * this is the responsibility of the caller.
718 void drm_crtc_cleanup(struct drm_crtc *crtc)
720 struct drm_device *dev = crtc->dev;
722 kfree(crtc->gamma_store);
723 crtc->gamma_store = NULL;
725 drm_modeset_lock_fini(&crtc->mutex);
727 drm_mode_object_unregister(dev, &crtc->base);
728 list_del(&crtc->head);
729 dev->mode_config.num_crtc--;
731 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
732 if (crtc->state && crtc->funcs->atomic_destroy_state)
733 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
737 memset(crtc, 0, sizeof(*crtc));
739 EXPORT_SYMBOL(drm_crtc_cleanup);
742 * drm_crtc_index - find the index of a registered CRTC
743 * @crtc: CRTC to find index for
745 * Given a registered CRTC, return the index of that CRTC within a DRM
746 * device's list of CRTCs.
748 unsigned int drm_crtc_index(struct drm_crtc *crtc)
750 unsigned int index = 0;
751 struct drm_crtc *tmp;
753 drm_for_each_crtc(tmp, crtc->dev) {
762 EXPORT_SYMBOL(drm_crtc_index);
765 * drm_mode_remove - remove and free a mode
766 * @connector: connector list to modify
767 * @mode: mode to remove
769 * Remove @mode from @connector's mode list, then free it.
771 static void drm_mode_remove(struct drm_connector *connector,
772 struct drm_display_mode *mode)
774 list_del(&mode->head);
775 drm_mode_destroy(connector->dev, mode);
779 * drm_display_info_set_bus_formats - set the supported bus formats
780 * @info: display info to store bus formats in
781 * @formats: array containing the supported bus formats
782 * @num_formats: the number of entries in the fmts array
784 * Store the supported bus formats in display info structure.
785 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
786 * a full list of available formats.
788 int drm_display_info_set_bus_formats(struct drm_display_info *info,
790 unsigned int num_formats)
794 if (!formats && num_formats)
797 if (formats && num_formats) {
798 fmts = kmemdup(formats, sizeof(*formats) * num_formats,
804 kfree(info->bus_formats);
805 info->bus_formats = fmts;
806 info->num_bus_formats = num_formats;
810 EXPORT_SYMBOL(drm_display_info_set_bus_formats);
813 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
814 * @connector: connector to quwery
816 * The kernel supports per-connector configration of its consoles through
817 * use of the video= parameter. This function parses that option and
818 * extracts the user's specified mode (or enable/disable status) for a
819 * particular connector. This is typically only used during the early fbdev
822 static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
824 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
827 if (fb_get_options(connector->name, &option))
830 if (!drm_mode_parse_command_line_for_connector(option,
838 switch (mode->force) {
842 case DRM_FORCE_ON_DIGITAL:
851 DRM_INFO("forcing %s connector %s\n", connector->name, s);
852 connector->force = mode->force;
855 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
857 mode->xres, mode->yres,
858 mode->refresh_specified ? mode->refresh : 60,
859 mode->rb ? " reduced blanking" : "",
860 mode->margins ? " with margins" : "",
861 mode->interlace ? " interlaced" : "");
865 * drm_connector_init - Init a preallocated connector
867 * @connector: the connector to init
868 * @funcs: callbacks for this connector
869 * @connector_type: user visible type of the connector
871 * Initialises a preallocated connector. Connectors should be
872 * subclassed as part of driver connector objects.
875 * Zero on success, error code on failure.
877 int drm_connector_init(struct drm_device *dev,
878 struct drm_connector *connector,
879 const struct drm_connector_funcs *funcs,
882 struct drm_mode_config *config = &dev->mode_config;
884 struct ida *connector_ida =
885 &drm_connector_enum_list[connector_type].ida;
887 drm_modeset_lock_all(dev);
889 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false, NULL);
893 connector->base.properties = &connector->properties;
894 connector->dev = dev;
895 connector->funcs = funcs;
897 connector->connector_id = ida_simple_get(&config->connector_ida, 0, 0, GFP_KERNEL);
898 if (connector->connector_id < 0) {
899 ret = connector->connector_id;
903 connector->connector_type = connector_type;
904 connector->connector_type_id =
905 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
906 if (connector->connector_type_id < 0) {
907 ret = connector->connector_type_id;
911 kasprintf(GFP_KERNEL, "%s-%d",
912 drm_connector_enum_list[connector_type].name,
913 connector->connector_type_id);
914 if (!connector->name) {
916 goto out_put_type_id;
919 INIT_LIST_HEAD(&connector->probed_modes);
920 INIT_LIST_HEAD(&connector->modes);
921 connector->edid_blob_ptr = NULL;
922 connector->status = connector_status_unknown;
924 drm_connector_get_cmdline_mode(connector);
926 /* We should add connectors at the end to avoid upsetting the connector
928 list_add_tail(&connector->head, &config->connector_list);
929 config->num_connector++;
931 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
932 drm_object_attach_property(&connector->base,
933 config->edid_property,
936 drm_object_attach_property(&connector->base,
937 config->dpms_property, 0);
939 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
940 drm_object_attach_property(&connector->base, config->prop_crtc_id, 0);
943 connector->debugfs_entry = NULL;
946 ida_remove(connector_ida, connector->connector_type_id);
949 ida_remove(&config->connector_ida, connector->connector_id);
952 drm_mode_object_unregister(dev, &connector->base);
955 drm_modeset_unlock_all(dev);
959 EXPORT_SYMBOL(drm_connector_init);
962 * drm_connector_cleanup - cleans up an initialised connector
963 * @connector: connector to cleanup
965 * Cleans up the connector but doesn't free the object.
967 void drm_connector_cleanup(struct drm_connector *connector)
969 struct drm_device *dev = connector->dev;
970 struct drm_display_mode *mode, *t;
972 if (connector->tile_group) {
973 drm_mode_put_tile_group(dev, connector->tile_group);
974 connector->tile_group = NULL;
977 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
978 drm_mode_remove(connector, mode);
980 list_for_each_entry_safe(mode, t, &connector->modes, head)
981 drm_mode_remove(connector, mode);
983 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
984 connector->connector_type_id);
986 ida_remove(&dev->mode_config.connector_ida,
987 connector->connector_id);
989 kfree(connector->display_info.bus_formats);
990 drm_mode_object_unregister(dev, &connector->base);
991 kfree(connector->name);
992 connector->name = NULL;
993 list_del(&connector->head);
994 dev->mode_config.num_connector--;
996 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
997 if (connector->state && connector->funcs->atomic_destroy_state)
998 connector->funcs->atomic_destroy_state(connector,
1001 memset(connector, 0, sizeof(*connector));
1003 EXPORT_SYMBOL(drm_connector_cleanup);
1006 * drm_connector_register - register a connector
1007 * @connector: the connector to register
1009 * Register userspace interfaces for a connector
1012 * Zero on success, error code on failure.
1014 int drm_connector_register(struct drm_connector *connector)
1018 drm_mode_object_register(connector->dev, &connector->base);
1020 ret = drm_sysfs_connector_add(connector);
1024 ret = drm_debugfs_connector_add(connector);
1026 drm_sysfs_connector_remove(connector);
1032 EXPORT_SYMBOL(drm_connector_register);
1035 * drm_connector_unregister - unregister a connector
1036 * @connector: the connector to unregister
1038 * Unregister userspace interfaces for a connector
1040 void drm_connector_unregister(struct drm_connector *connector)
1042 drm_sysfs_connector_remove(connector);
1043 drm_debugfs_connector_remove(connector);
1045 EXPORT_SYMBOL(drm_connector_unregister);
1048 * drm_connector_register_all - register all connectors
1051 * This function registers all connectors in sysfs and other places so that
1052 * userspace can start to access them. Drivers can call it after calling
1053 * drm_dev_register() to complete the device registration, if they don't call
1054 * drm_connector_register() on each connector individually.
1056 * When a device is unplugged and should be removed from userspace access,
1057 * call drm_connector_unregister_all(), which is the inverse of this
1061 * Zero on success, error code on failure.
1063 int drm_connector_register_all(struct drm_device *dev)
1065 struct drm_connector *connector;
1068 mutex_lock(&dev->mode_config.mutex);
1070 drm_for_each_connector(connector, dev) {
1071 ret = drm_connector_register(connector);
1076 mutex_unlock(&dev->mode_config.mutex);
1081 mutex_unlock(&dev->mode_config.mutex);
1082 drm_connector_unregister_all(dev);
1085 EXPORT_SYMBOL(drm_connector_register_all);
1088 * drm_connector_unregister_all - unregister connector userspace interfaces
1091 * This functions unregisters all connectors from sysfs and other places so
1092 * that userspace can no longer access them. Drivers should call this as the
1093 * first step tearing down the device instace, or when the underlying
1094 * physical device disappeared (e.g. USB unplug), right before calling
1095 * drm_dev_unregister().
1097 void drm_connector_unregister_all(struct drm_device *dev)
1099 struct drm_connector *connector;
1101 /* FIXME: taking the mode config mutex ends up in a clash with sysfs */
1102 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1103 drm_connector_unregister(connector);
1105 EXPORT_SYMBOL(drm_connector_unregister_all);
1108 * drm_encoder_init - Init a preallocated encoder
1110 * @encoder: the encoder to init
1111 * @funcs: callbacks for this encoder
1112 * @encoder_type: user visible type of the encoder
1113 * @name: printf style format string for the encoder name, or NULL for default name
1115 * Initialises a preallocated encoder. Encoder should be
1116 * subclassed as part of driver encoder objects.
1119 * Zero on success, error code on failure.
1121 int drm_encoder_init(struct drm_device *dev,
1122 struct drm_encoder *encoder,
1123 const struct drm_encoder_funcs *funcs,
1124 int encoder_type, const char *name, ...)
1128 drm_modeset_lock_all(dev);
1130 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1135 encoder->encoder_type = encoder_type;
1136 encoder->funcs = funcs;
1141 encoder->name = kvasprintf(GFP_KERNEL, name, ap);
1144 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1145 drm_encoder_enum_list[encoder_type].name,
1148 if (!encoder->name) {
1153 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1154 dev->mode_config.num_encoder++;
1158 drm_mode_object_unregister(dev, &encoder->base);
1161 drm_modeset_unlock_all(dev);
1165 EXPORT_SYMBOL(drm_encoder_init);
1168 * drm_encoder_index - find the index of a registered encoder
1169 * @encoder: encoder to find index for
1171 * Given a registered encoder, return the index of that encoder within a DRM
1172 * device's list of encoders.
1174 unsigned int drm_encoder_index(struct drm_encoder *encoder)
1176 unsigned int index = 0;
1177 struct drm_encoder *tmp;
1179 drm_for_each_encoder(tmp, encoder->dev) {
1188 EXPORT_SYMBOL(drm_encoder_index);
1191 * drm_encoder_cleanup - cleans up an initialised encoder
1192 * @encoder: encoder to cleanup
1194 * Cleans up the encoder but doesn't free the object.
1196 void drm_encoder_cleanup(struct drm_encoder *encoder)
1198 struct drm_device *dev = encoder->dev;
1200 drm_modeset_lock_all(dev);
1201 drm_mode_object_unregister(dev, &encoder->base);
1202 kfree(encoder->name);
1203 list_del(&encoder->head);
1204 dev->mode_config.num_encoder--;
1205 drm_modeset_unlock_all(dev);
1207 memset(encoder, 0, sizeof(*encoder));
1209 EXPORT_SYMBOL(drm_encoder_cleanup);
1211 static unsigned int drm_num_planes(struct drm_device *dev)
1213 unsigned int num = 0;
1214 struct drm_plane *tmp;
1216 drm_for_each_plane(tmp, dev) {
1224 * drm_universal_plane_init - Initialize a new universal plane object
1226 * @plane: plane object to init
1227 * @possible_crtcs: bitmask of possible CRTCs
1228 * @funcs: callbacks for the new plane
1229 * @formats: array of supported formats (%DRM_FORMAT_*)
1230 * @format_count: number of elements in @formats
1231 * @type: type of plane (overlay, primary, cursor)
1232 * @name: printf style format string for the plane name, or NULL for default name
1234 * Initializes a plane object of type @type.
1237 * Zero on success, error code on failure.
1239 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1240 unsigned long possible_crtcs,
1241 const struct drm_plane_funcs *funcs,
1242 const uint32_t *formats, unsigned int format_count,
1243 enum drm_plane_type type,
1244 const char *name, ...)
1246 struct drm_mode_config *config = &dev->mode_config;
1249 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1253 drm_modeset_lock_init(&plane->mutex);
1255 plane->base.properties = &plane->properties;
1257 plane->funcs = funcs;
1258 plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
1260 if (!plane->format_types) {
1261 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1262 drm_mode_object_unregister(dev, &plane->base);
1270 plane->name = kvasprintf(GFP_KERNEL, name, ap);
1273 plane->name = kasprintf(GFP_KERNEL, "plane-%d",
1274 drm_num_planes(dev));
1277 kfree(plane->format_types);
1278 drm_mode_object_unregister(dev, &plane->base);
1282 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1283 plane->format_count = format_count;
1284 plane->possible_crtcs = possible_crtcs;
1287 list_add_tail(&plane->head, &config->plane_list);
1288 config->num_total_plane++;
1289 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1290 config->num_overlay_plane++;
1292 drm_object_attach_property(&plane->base,
1293 config->plane_type_property,
1296 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
1297 drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
1298 drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
1299 drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
1300 drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
1301 drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
1302 drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
1303 drm_object_attach_property(&plane->base, config->prop_src_x, 0);
1304 drm_object_attach_property(&plane->base, config->prop_src_y, 0);
1305 drm_object_attach_property(&plane->base, config->prop_src_w, 0);
1306 drm_object_attach_property(&plane->base, config->prop_src_h, 0);
1311 EXPORT_SYMBOL(drm_universal_plane_init);
1314 * drm_plane_init - Initialize a legacy plane
1316 * @plane: plane object to init
1317 * @possible_crtcs: bitmask of possible CRTCs
1318 * @funcs: callbacks for the new plane
1319 * @formats: array of supported formats (%DRM_FORMAT_*)
1320 * @format_count: number of elements in @formats
1321 * @is_primary: plane type (primary vs overlay)
1323 * Legacy API to initialize a DRM plane.
1325 * New drivers should call drm_universal_plane_init() instead.
1328 * Zero on success, error code on failure.
1330 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1331 unsigned long possible_crtcs,
1332 const struct drm_plane_funcs *funcs,
1333 const uint32_t *formats, unsigned int format_count,
1336 enum drm_plane_type type;
1338 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1339 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1340 formats, format_count, type, NULL);
1342 EXPORT_SYMBOL(drm_plane_init);
1345 * drm_plane_cleanup - Clean up the core plane usage
1346 * @plane: plane to cleanup
1348 * This function cleans up @plane and removes it from the DRM mode setting
1349 * core. Note that the function does *not* free the plane structure itself,
1350 * this is the responsibility of the caller.
1352 void drm_plane_cleanup(struct drm_plane *plane)
1354 struct drm_device *dev = plane->dev;
1356 drm_modeset_lock_all(dev);
1357 kfree(plane->format_types);
1358 drm_mode_object_unregister(dev, &plane->base);
1360 BUG_ON(list_empty(&plane->head));
1362 list_del(&plane->head);
1363 dev->mode_config.num_total_plane--;
1364 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1365 dev->mode_config.num_overlay_plane--;
1366 drm_modeset_unlock_all(dev);
1368 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1369 if (plane->state && plane->funcs->atomic_destroy_state)
1370 plane->funcs->atomic_destroy_state(plane, plane->state);
1374 memset(plane, 0, sizeof(*plane));
1376 EXPORT_SYMBOL(drm_plane_cleanup);
1379 * drm_plane_index - find the index of a registered plane
1380 * @plane: plane to find index for
1382 * Given a registered plane, return the index of that CRTC within a DRM
1383 * device's list of planes.
1385 unsigned int drm_plane_index(struct drm_plane *plane)
1387 unsigned int index = 0;
1388 struct drm_plane *tmp;
1390 drm_for_each_plane(tmp, plane->dev) {
1399 EXPORT_SYMBOL(drm_plane_index);
1402 * drm_plane_from_index - find the registered plane at an index
1404 * @idx: index of registered plane to find for
1406 * Given a plane index, return the registered plane from DRM device's
1407 * list of planes with matching index.
1410 drm_plane_from_index(struct drm_device *dev, int idx)
1412 struct drm_plane *plane;
1415 drm_for_each_plane(plane, dev) {
1422 EXPORT_SYMBOL(drm_plane_from_index);
1425 * drm_plane_force_disable - Forcibly disable a plane
1426 * @plane: plane to disable
1428 * Forces the plane to be disabled.
1430 * Used when the plane's current framebuffer is destroyed,
1431 * and when restoring fbdev mode.
1433 void drm_plane_force_disable(struct drm_plane *plane)
1440 plane->old_fb = plane->fb;
1441 ret = plane->funcs->disable_plane(plane);
1443 DRM_ERROR("failed to disable plane with busy fb\n");
1444 plane->old_fb = NULL;
1447 /* disconnect the plane from the fb and crtc: */
1448 drm_framebuffer_unreference(plane->old_fb);
1449 plane->old_fb = NULL;
1453 EXPORT_SYMBOL(drm_plane_force_disable);
1455 static int drm_mode_create_standard_properties(struct drm_device *dev)
1457 struct drm_property *prop;
1460 * Standard properties (apply to all connectors)
1462 prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1463 DRM_MODE_PROP_IMMUTABLE,
1467 dev->mode_config.edid_property = prop;
1469 prop = drm_property_create_enum(dev, 0,
1470 "DPMS", drm_dpms_enum_list,
1471 ARRAY_SIZE(drm_dpms_enum_list));
1474 dev->mode_config.dpms_property = prop;
1476 prop = drm_property_create(dev,
1477 DRM_MODE_PROP_BLOB |
1478 DRM_MODE_PROP_IMMUTABLE,
1482 dev->mode_config.path_property = prop;
1484 prop = drm_property_create(dev,
1485 DRM_MODE_PROP_BLOB |
1486 DRM_MODE_PROP_IMMUTABLE,
1490 dev->mode_config.tile_property = prop;
1492 prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1493 "type", drm_plane_type_enum_list,
1494 ARRAY_SIZE(drm_plane_type_enum_list));
1497 dev->mode_config.plane_type_property = prop;
1499 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1500 "SRC_X", 0, UINT_MAX);
1503 dev->mode_config.prop_src_x = prop;
1505 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1506 "SRC_Y", 0, UINT_MAX);
1509 dev->mode_config.prop_src_y = prop;
1511 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1512 "SRC_W", 0, UINT_MAX);
1515 dev->mode_config.prop_src_w = prop;
1517 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1518 "SRC_H", 0, UINT_MAX);
1521 dev->mode_config.prop_src_h = prop;
1523 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1524 "CRTC_X", INT_MIN, INT_MAX);
1527 dev->mode_config.prop_crtc_x = prop;
1529 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1530 "CRTC_Y", INT_MIN, INT_MAX);
1533 dev->mode_config.prop_crtc_y = prop;
1535 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1536 "CRTC_W", 0, INT_MAX);
1539 dev->mode_config.prop_crtc_w = prop;
1541 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1542 "CRTC_H", 0, INT_MAX);
1545 dev->mode_config.prop_crtc_h = prop;
1547 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1548 "FB_ID", DRM_MODE_OBJECT_FB);
1551 dev->mode_config.prop_fb_id = prop;
1553 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1554 "CRTC_ID", DRM_MODE_OBJECT_CRTC);
1557 dev->mode_config.prop_crtc_id = prop;
1559 prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
1563 dev->mode_config.prop_active = prop;
1565 prop = drm_property_create(dev,
1566 DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB,
1570 dev->mode_config.prop_mode_id = prop;
1572 prop = drm_property_create(dev,
1577 dev->mode_config.degamma_lut_property = prop;
1579 prop = drm_property_create_range(dev,
1580 DRM_MODE_PROP_IMMUTABLE,
1581 "DEGAMMA_LUT_SIZE", 0, UINT_MAX);
1584 dev->mode_config.degamma_lut_size_property = prop;
1586 prop = drm_property_create(dev,
1591 dev->mode_config.ctm_property = prop;
1593 prop = drm_property_create(dev,
1598 dev->mode_config.gamma_lut_property = prop;
1600 prop = drm_property_create_range(dev,
1601 DRM_MODE_PROP_IMMUTABLE,
1602 "GAMMA_LUT_SIZE", 0, UINT_MAX);
1605 dev->mode_config.gamma_lut_size_property = prop;
1611 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1614 * Called by a driver the first time a DVI-I connector is made.
1616 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1618 struct drm_property *dvi_i_selector;
1619 struct drm_property *dvi_i_subconnector;
1621 if (dev->mode_config.dvi_i_select_subconnector_property)
1625 drm_property_create_enum(dev, 0,
1626 "select subconnector",
1627 drm_dvi_i_select_enum_list,
1628 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1629 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1631 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1633 drm_dvi_i_subconnector_enum_list,
1634 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1635 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1639 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1642 * drm_create_tv_properties - create TV specific connector properties
1644 * @num_modes: number of different TV formats (modes) supported
1645 * @modes: array of pointers to strings containing name of each format
1647 * Called by a driver's TV initialization routine, this function creates
1648 * the TV specific connector properties for a given device. Caller is
1649 * responsible for allocating a list of format names and passing them to
1652 int drm_mode_create_tv_properties(struct drm_device *dev,
1653 unsigned int num_modes,
1654 const char * const modes[])
1656 struct drm_property *tv_selector;
1657 struct drm_property *tv_subconnector;
1660 if (dev->mode_config.tv_select_subconnector_property)
1664 * Basic connector properties
1666 tv_selector = drm_property_create_enum(dev, 0,
1667 "select subconnector",
1668 drm_tv_select_enum_list,
1669 ARRAY_SIZE(drm_tv_select_enum_list));
1673 dev->mode_config.tv_select_subconnector_property = tv_selector;
1676 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1678 drm_tv_subconnector_enum_list,
1679 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1680 if (!tv_subconnector)
1682 dev->mode_config.tv_subconnector_property = tv_subconnector;
1685 * Other, TV specific properties: margins & TV modes.
1687 dev->mode_config.tv_left_margin_property =
1688 drm_property_create_range(dev, 0, "left margin", 0, 100);
1689 if (!dev->mode_config.tv_left_margin_property)
1692 dev->mode_config.tv_right_margin_property =
1693 drm_property_create_range(dev, 0, "right margin", 0, 100);
1694 if (!dev->mode_config.tv_right_margin_property)
1697 dev->mode_config.tv_top_margin_property =
1698 drm_property_create_range(dev, 0, "top margin", 0, 100);
1699 if (!dev->mode_config.tv_top_margin_property)
1702 dev->mode_config.tv_bottom_margin_property =
1703 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1704 if (!dev->mode_config.tv_bottom_margin_property)
1707 dev->mode_config.tv_mode_property =
1708 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1710 if (!dev->mode_config.tv_mode_property)
1713 for (i = 0; i < num_modes; i++)
1714 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1717 dev->mode_config.tv_brightness_property =
1718 drm_property_create_range(dev, 0, "brightness", 0, 100);
1719 if (!dev->mode_config.tv_brightness_property)
1722 dev->mode_config.tv_contrast_property =
1723 drm_property_create_range(dev, 0, "contrast", 0, 100);
1724 if (!dev->mode_config.tv_contrast_property)
1727 dev->mode_config.tv_flicker_reduction_property =
1728 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1729 if (!dev->mode_config.tv_flicker_reduction_property)
1732 dev->mode_config.tv_overscan_property =
1733 drm_property_create_range(dev, 0, "overscan", 0, 100);
1734 if (!dev->mode_config.tv_overscan_property)
1737 dev->mode_config.tv_saturation_property =
1738 drm_property_create_range(dev, 0, "saturation", 0, 100);
1739 if (!dev->mode_config.tv_saturation_property)
1742 dev->mode_config.tv_hue_property =
1743 drm_property_create_range(dev, 0, "hue", 0, 100);
1744 if (!dev->mode_config.tv_hue_property)
1751 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1754 * drm_mode_create_scaling_mode_property - create scaling mode property
1757 * Called by a driver the first time it's needed, must be attached to desired
1760 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1762 struct drm_property *scaling_mode;
1764 if (dev->mode_config.scaling_mode_property)
1768 drm_property_create_enum(dev, 0, "scaling mode",
1769 drm_scaling_mode_enum_list,
1770 ARRAY_SIZE(drm_scaling_mode_enum_list));
1772 dev->mode_config.scaling_mode_property = scaling_mode;
1776 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1779 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1782 * Called by a driver the first time it's needed, must be attached to desired
1786 * Zero on success, negative errno on failure.
1788 int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1790 if (dev->mode_config.aspect_ratio_property)
1793 dev->mode_config.aspect_ratio_property =
1794 drm_property_create_enum(dev, 0, "aspect ratio",
1795 drm_aspect_ratio_enum_list,
1796 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1798 if (dev->mode_config.aspect_ratio_property == NULL)
1803 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1806 * drm_mode_create_dirty_property - create dirty property
1809 * Called by a driver the first time it's needed, must be attached to desired
1812 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1814 struct drm_property *dirty_info;
1816 if (dev->mode_config.dirty_info_property)
1820 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1822 drm_dirty_info_enum_list,
1823 ARRAY_SIZE(drm_dirty_info_enum_list));
1824 dev->mode_config.dirty_info_property = dirty_info;
1828 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1831 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1834 * Create the the suggested x/y offset property for connectors.
1836 int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1838 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1841 dev->mode_config.suggested_x_property =
1842 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1844 dev->mode_config.suggested_y_property =
1845 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1847 if (dev->mode_config.suggested_x_property == NULL ||
1848 dev->mode_config.suggested_y_property == NULL)
1852 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1855 * drm_mode_getresources - get graphics configuration
1856 * @dev: drm device for the ioctl
1857 * @data: data pointer for the ioctl
1858 * @file_priv: drm file for the ioctl call
1860 * Construct a set of configuration description structures and return
1861 * them to the user, including CRTC, connector and framebuffer configuration.
1863 * Called by the user via ioctl.
1866 * Zero on success, negative errno on failure.
1868 int drm_mode_getresources(struct drm_device *dev, void *data,
1869 struct drm_file *file_priv)
1871 struct drm_mode_card_res *card_res = data;
1872 struct list_head *lh;
1873 struct drm_framebuffer *fb;
1874 struct drm_connector *connector;
1875 struct drm_crtc *crtc;
1876 struct drm_encoder *encoder;
1878 int connector_count = 0;
1881 int encoder_count = 0;
1883 uint32_t __user *fb_id;
1884 uint32_t __user *crtc_id;
1885 uint32_t __user *connector_id;
1886 uint32_t __user *encoder_id;
1888 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1892 mutex_lock(&file_priv->fbs_lock);
1894 * For the non-control nodes we need to limit the list of resources
1895 * by IDs in the group list for this node
1897 list_for_each(lh, &file_priv->fbs)
1900 /* handle this in 4 parts */
1902 if (card_res->count_fbs >= fb_count) {
1904 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1905 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1906 if (put_user(fb->base.id, fb_id + copied)) {
1907 mutex_unlock(&file_priv->fbs_lock);
1913 card_res->count_fbs = fb_count;
1914 mutex_unlock(&file_priv->fbs_lock);
1916 /* mode_config.mutex protects the connector list against e.g. DP MST
1917 * connector hot-adding. CRTC/Plane lists are invariant. */
1918 mutex_lock(&dev->mode_config.mutex);
1919 drm_for_each_crtc(crtc, dev)
1922 drm_for_each_connector(connector, dev)
1925 drm_for_each_encoder(encoder, dev)
1928 card_res->max_height = dev->mode_config.max_height;
1929 card_res->min_height = dev->mode_config.min_height;
1930 card_res->max_width = dev->mode_config.max_width;
1931 card_res->min_width = dev->mode_config.min_width;
1934 if (card_res->count_crtcs >= crtc_count) {
1936 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1937 drm_for_each_crtc(crtc, dev) {
1938 if (put_user(crtc->base.id, crtc_id + copied)) {
1945 card_res->count_crtcs = crtc_count;
1948 if (card_res->count_encoders >= encoder_count) {
1950 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1951 drm_for_each_encoder(encoder, dev) {
1952 if (put_user(encoder->base.id, encoder_id +
1960 card_res->count_encoders = encoder_count;
1963 if (card_res->count_connectors >= connector_count) {
1965 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1966 drm_for_each_connector(connector, dev) {
1967 if (put_user(connector->base.id,
1968 connector_id + copied)) {
1975 card_res->count_connectors = connector_count;
1978 mutex_unlock(&dev->mode_config.mutex);
1983 * drm_mode_getcrtc - get CRTC configuration
1984 * @dev: drm device for the ioctl
1985 * @data: data pointer for the ioctl
1986 * @file_priv: drm file for the ioctl call
1988 * Construct a CRTC configuration structure to return to the user.
1990 * Called by the user via ioctl.
1993 * Zero on success, negative errno on failure.
1995 int drm_mode_getcrtc(struct drm_device *dev,
1996 void *data, struct drm_file *file_priv)
1998 struct drm_mode_crtc *crtc_resp = data;
1999 struct drm_crtc *crtc;
2001 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2004 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
2008 drm_modeset_lock_crtc(crtc, crtc->primary);
2009 crtc_resp->gamma_size = crtc->gamma_size;
2010 if (crtc->primary->fb)
2011 crtc_resp->fb_id = crtc->primary->fb->base.id;
2013 crtc_resp->fb_id = 0;
2016 crtc_resp->x = crtc->primary->state->src_x >> 16;
2017 crtc_resp->y = crtc->primary->state->src_y >> 16;
2018 if (crtc->state->enable) {
2019 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode);
2020 crtc_resp->mode_valid = 1;
2023 crtc_resp->mode_valid = 0;
2026 crtc_resp->x = crtc->x;
2027 crtc_resp->y = crtc->y;
2028 if (crtc->enabled) {
2029 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode);
2030 crtc_resp->mode_valid = 1;
2033 crtc_resp->mode_valid = 0;
2036 drm_modeset_unlock_crtc(crtc);
2041 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
2042 const struct drm_file *file_priv)
2045 * If user-space hasn't configured the driver to expose the stereo 3D
2046 * modes, don't expose them.
2048 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
2054 static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
2056 /* For atomic drivers only state objects are synchronously updated and
2057 * protected by modeset locks, so check those first. */
2058 if (connector->state)
2059 return connector->state->best_encoder;
2060 return connector->encoder;
2063 /* helper for getconnector and getproperties ioctls */
2064 static int get_properties(struct drm_mode_object *obj, bool atomic,
2065 uint32_t __user *prop_ptr, uint64_t __user *prop_values,
2066 uint32_t *arg_count_props)
2071 props_count = obj->properties->count;
2073 props_count -= obj->properties->atomic_count;
2075 if ((*arg_count_props >= props_count) && props_count) {
2076 for (i = 0, copied = 0; copied < props_count; i++) {
2077 struct drm_property *prop = obj->properties->properties[i];
2080 if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
2083 ret = drm_object_property_get_value(obj, prop, &val);
2087 if (put_user(prop->base.id, prop_ptr + copied))
2090 if (put_user(val, prop_values + copied))
2096 *arg_count_props = props_count;
2102 * drm_mode_getconnector - get connector configuration
2103 * @dev: drm device for the ioctl
2104 * @data: data pointer for the ioctl
2105 * @file_priv: drm file for the ioctl call
2107 * Construct a connector configuration structure to return to the user.
2109 * Called by the user via ioctl.
2112 * Zero on success, negative errno on failure.
2114 int drm_mode_getconnector(struct drm_device *dev, void *data,
2115 struct drm_file *file_priv)
2117 struct drm_mode_get_connector *out_resp = data;
2118 struct drm_connector *connector;
2119 struct drm_encoder *encoder;
2120 struct drm_display_mode *mode;
2122 int encoders_count = 0;
2126 struct drm_mode_modeinfo u_mode;
2127 struct drm_mode_modeinfo __user *mode_ptr;
2128 uint32_t __user *encoder_ptr;
2130 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2133 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
2135 mutex_lock(&dev->mode_config.mutex);
2137 connector = drm_connector_find(dev, out_resp->connector_id);
2143 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
2144 if (connector->encoder_ids[i] != 0)
2147 if (out_resp->count_modes == 0) {
2148 connector->funcs->fill_modes(connector,
2149 dev->mode_config.max_width,
2150 dev->mode_config.max_height);
2153 /* delayed so we get modes regardless of pre-fill_modes state */
2154 list_for_each_entry(mode, &connector->modes, head)
2155 if (drm_mode_expose_to_userspace(mode, file_priv))
2158 out_resp->connector_id = connector->base.id;
2159 out_resp->connector_type = connector->connector_type;
2160 out_resp->connector_type_id = connector->connector_type_id;
2161 out_resp->mm_width = connector->display_info.width_mm;
2162 out_resp->mm_height = connector->display_info.height_mm;
2163 out_resp->subpixel = connector->display_info.subpixel_order;
2164 out_resp->connection = connector->status;
2166 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2167 encoder = drm_connector_get_encoder(connector);
2169 out_resp->encoder_id = encoder->base.id;
2171 out_resp->encoder_id = 0;
2174 * This ioctl is called twice, once to determine how much space is
2175 * needed, and the 2nd time to fill it.
2177 if ((out_resp->count_modes >= mode_count) && mode_count) {
2179 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
2180 list_for_each_entry(mode, &connector->modes, head) {
2181 if (!drm_mode_expose_to_userspace(mode, file_priv))
2184 drm_mode_convert_to_umode(&u_mode, mode);
2185 if (copy_to_user(mode_ptr + copied,
2186 &u_mode, sizeof(u_mode))) {
2193 out_resp->count_modes = mode_count;
2195 ret = get_properties(&connector->base, file_priv->atomic,
2196 (uint32_t __user *)(unsigned long)(out_resp->props_ptr),
2197 (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr),
2198 &out_resp->count_props);
2202 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2204 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
2205 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2206 if (connector->encoder_ids[i] != 0) {
2207 if (put_user(connector->encoder_ids[i],
2208 encoder_ptr + copied)) {
2216 out_resp->count_encoders = encoders_count;
2219 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2222 mutex_unlock(&dev->mode_config.mutex);
2227 static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2229 struct drm_connector *connector;
2230 struct drm_device *dev = encoder->dev;
2231 bool uses_atomic = false;
2233 /* For atomic drivers only state objects are synchronously updated and
2234 * protected by modeset locks, so check those first. */
2235 drm_for_each_connector(connector, dev) {
2236 if (!connector->state)
2241 if (connector->state->best_encoder != encoder)
2244 return connector->state->crtc;
2247 /* Don't return stale data (e.g. pending async disable). */
2251 return encoder->crtc;
2255 * drm_mode_getencoder - get encoder configuration
2256 * @dev: drm device for the ioctl
2257 * @data: data pointer for the ioctl
2258 * @file_priv: drm file for the ioctl call
2260 * Construct a encoder configuration structure to return to the user.
2262 * Called by the user via ioctl.
2265 * Zero on success, negative errno on failure.
2267 int drm_mode_getencoder(struct drm_device *dev, void *data,
2268 struct drm_file *file_priv)
2270 struct drm_mode_get_encoder *enc_resp = data;
2271 struct drm_encoder *encoder;
2272 struct drm_crtc *crtc;
2274 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2277 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
2281 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2282 crtc = drm_encoder_get_crtc(encoder);
2284 enc_resp->crtc_id = crtc->base.id;
2286 enc_resp->crtc_id = 0;
2287 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2289 enc_resp->encoder_type = encoder->encoder_type;
2290 enc_resp->encoder_id = encoder->base.id;
2291 enc_resp->possible_crtcs = encoder->possible_crtcs;
2292 enc_resp->possible_clones = encoder->possible_clones;
2298 * drm_mode_getplane_res - enumerate all plane resources
2301 * @file_priv: DRM file info
2303 * Construct a list of plane ids to return to the user.
2305 * Called by the user via ioctl.
2308 * Zero on success, negative errno on failure.
2310 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2311 struct drm_file *file_priv)
2313 struct drm_mode_get_plane_res *plane_resp = data;
2314 struct drm_mode_config *config;
2315 struct drm_plane *plane;
2316 uint32_t __user *plane_ptr;
2318 unsigned num_planes;
2320 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2323 config = &dev->mode_config;
2325 if (file_priv->universal_planes)
2326 num_planes = config->num_total_plane;
2328 num_planes = config->num_overlay_plane;
2331 * This ioctl is called twice, once to determine how much space is
2332 * needed, and the 2nd time to fill it.
2335 (plane_resp->count_planes >= num_planes)) {
2336 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2338 /* Plane lists are invariant, no locking needed. */
2339 drm_for_each_plane(plane, dev) {
2341 * Unless userspace set the 'universal planes'
2342 * capability bit, only advertise overlays.
2344 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2345 !file_priv->universal_planes)
2348 if (put_user(plane->base.id, plane_ptr + copied))
2353 plane_resp->count_planes = num_planes;
2359 * drm_mode_getplane - get plane configuration
2362 * @file_priv: DRM file info
2364 * Construct a plane configuration structure to return to the user.
2366 * Called by the user via ioctl.
2369 * Zero on success, negative errno on failure.
2371 int drm_mode_getplane(struct drm_device *dev, void *data,
2372 struct drm_file *file_priv)
2374 struct drm_mode_get_plane *plane_resp = data;
2375 struct drm_plane *plane;
2376 uint32_t __user *format_ptr;
2378 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2381 plane = drm_plane_find(dev, plane_resp->plane_id);
2385 drm_modeset_lock(&plane->mutex, NULL);
2387 plane_resp->crtc_id = plane->crtc->base.id;
2389 plane_resp->crtc_id = 0;
2392 plane_resp->fb_id = plane->fb->base.id;
2394 plane_resp->fb_id = 0;
2395 drm_modeset_unlock(&plane->mutex);
2397 plane_resp->plane_id = plane->base.id;
2398 plane_resp->possible_crtcs = plane->possible_crtcs;
2399 plane_resp->gamma_size = 0;
2402 * This ioctl is called twice, once to determine how much space is
2403 * needed, and the 2nd time to fill it.
2405 if (plane->format_count &&
2406 (plane_resp->count_format_types >= plane->format_count)) {
2407 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2408 if (copy_to_user(format_ptr,
2409 plane->format_types,
2410 sizeof(uint32_t) * plane->format_count)) {
2414 plane_resp->count_format_types = plane->format_count;
2420 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2421 * @plane: plane to check for format support
2422 * @format: the pixel format
2425 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2428 int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format)
2432 for (i = 0; i < plane->format_count; i++) {
2433 if (format == plane->format_types[i])
2440 static int check_src_coords(uint32_t src_x, uint32_t src_y,
2441 uint32_t src_w, uint32_t src_h,
2442 const struct drm_framebuffer *fb)
2444 unsigned int fb_width, fb_height;
2446 fb_width = fb->width << 16;
2447 fb_height = fb->height << 16;
2449 /* Make sure source coordinates are inside the fb. */
2450 if (src_w > fb_width ||
2451 src_x > fb_width - src_w ||
2452 src_h > fb_height ||
2453 src_y > fb_height - src_h) {
2454 DRM_DEBUG_KMS("Invalid source coordinates "
2455 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2456 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2457 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2458 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2459 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2467 * setplane_internal - setplane handler for internal callers
2469 * Note that we assume an extra reference has already been taken on fb. If the
2470 * update fails, this reference will be dropped before return; if it succeeds,
2471 * the previous framebuffer (if any) will be unreferenced instead.
2473 * src_{x,y,w,h} are provided in 16.16 fixed point format
2475 static int __setplane_internal(struct drm_plane *plane,
2476 struct drm_crtc *crtc,
2477 struct drm_framebuffer *fb,
2478 int32_t crtc_x, int32_t crtc_y,
2479 uint32_t crtc_w, uint32_t crtc_h,
2480 /* src_{x,y,w,h} values are 16.16 fixed point */
2481 uint32_t src_x, uint32_t src_y,
2482 uint32_t src_w, uint32_t src_h)
2486 /* No fb means shut it down */
2488 plane->old_fb = plane->fb;
2489 ret = plane->funcs->disable_plane(plane);
2494 plane->old_fb = NULL;
2499 /* Check whether this plane is usable on this CRTC */
2500 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2501 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2506 /* Check whether this plane supports the fb pixel format. */
2507 ret = drm_plane_check_pixel_format(plane, fb->pixel_format);
2509 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2510 drm_get_format_name(fb->pixel_format));
2514 /* Give drivers some help against integer overflows */
2515 if (crtc_w > INT_MAX ||
2516 crtc_x > INT_MAX - (int32_t) crtc_w ||
2518 crtc_y > INT_MAX - (int32_t) crtc_h) {
2519 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2520 crtc_w, crtc_h, crtc_x, crtc_y);
2525 ret = check_src_coords(src_x, src_y, src_w, src_h, fb);
2529 plane->old_fb = plane->fb;
2530 ret = plane->funcs->update_plane(plane, crtc, fb,
2531 crtc_x, crtc_y, crtc_w, crtc_h,
2532 src_x, src_y, src_w, src_h);
2538 plane->old_fb = NULL;
2543 drm_framebuffer_unreference(fb);
2545 drm_framebuffer_unreference(plane->old_fb);
2546 plane->old_fb = NULL;
2551 static int setplane_internal(struct drm_plane *plane,
2552 struct drm_crtc *crtc,
2553 struct drm_framebuffer *fb,
2554 int32_t crtc_x, int32_t crtc_y,
2555 uint32_t crtc_w, uint32_t crtc_h,
2556 /* src_{x,y,w,h} values are 16.16 fixed point */
2557 uint32_t src_x, uint32_t src_y,
2558 uint32_t src_w, uint32_t src_h)
2562 drm_modeset_lock_all(plane->dev);
2563 ret = __setplane_internal(plane, crtc, fb,
2564 crtc_x, crtc_y, crtc_w, crtc_h,
2565 src_x, src_y, src_w, src_h);
2566 drm_modeset_unlock_all(plane->dev);
2572 * drm_mode_setplane - configure a plane's configuration
2574 * @data: ioctl data*
2575 * @file_priv: DRM file info
2577 * Set plane configuration, including placement, fb, scaling, and other factors.
2578 * Or pass a NULL fb to disable (planes may be disabled without providing a
2582 * Zero on success, negative errno on failure.
2584 int drm_mode_setplane(struct drm_device *dev, void *data,
2585 struct drm_file *file_priv)
2587 struct drm_mode_set_plane *plane_req = data;
2588 struct drm_plane *plane;
2589 struct drm_crtc *crtc = NULL;
2590 struct drm_framebuffer *fb = NULL;
2592 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2596 * First, find the plane, crtc, and fb objects. If not available,
2597 * we don't bother to call the driver.
2599 plane = drm_plane_find(dev, plane_req->plane_id);
2601 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2602 plane_req->plane_id);
2606 if (plane_req->fb_id) {
2607 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2609 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2614 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2616 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2617 plane_req->crtc_id);
2623 * setplane_internal will take care of deref'ing either the old or new
2624 * framebuffer depending on success.
2626 return setplane_internal(plane, crtc, fb,
2627 plane_req->crtc_x, plane_req->crtc_y,
2628 plane_req->crtc_w, plane_req->crtc_h,
2629 plane_req->src_x, plane_req->src_y,
2630 plane_req->src_w, plane_req->src_h);
2634 * drm_mode_set_config_internal - helper to call ->set_config
2635 * @set: modeset config to set
2637 * This is a little helper to wrap internal calls to the ->set_config driver
2638 * interface. The only thing it adds is correct refcounting dance.
2641 * Zero on success, negative errno on failure.
2643 int drm_mode_set_config_internal(struct drm_mode_set *set)
2645 struct drm_crtc *crtc = set->crtc;
2646 struct drm_framebuffer *fb;
2647 struct drm_crtc *tmp;
2651 * NOTE: ->set_config can also disable other crtcs (if we steal all
2652 * connectors from it), hence we need to refcount the fbs across all
2653 * crtcs. Atomic modeset will have saner semantics ...
2655 drm_for_each_crtc(tmp, crtc->dev)
2656 tmp->primary->old_fb = tmp->primary->fb;
2660 ret = crtc->funcs->set_config(set);
2662 crtc->primary->crtc = crtc;
2663 crtc->primary->fb = fb;
2666 drm_for_each_crtc(tmp, crtc->dev) {
2667 if (tmp->primary->fb)
2668 drm_framebuffer_reference(tmp->primary->fb);
2669 if (tmp->primary->old_fb)
2670 drm_framebuffer_unreference(tmp->primary->old_fb);
2671 tmp->primary->old_fb = NULL;
2676 EXPORT_SYMBOL(drm_mode_set_config_internal);
2679 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2680 * @mode: mode to query
2681 * @hdisplay: hdisplay value to fill in
2682 * @vdisplay: vdisplay value to fill in
2684 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2685 * the appropriate layout.
2687 void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
2688 int *hdisplay, int *vdisplay)
2690 struct drm_display_mode adjusted;
2692 drm_mode_copy(&adjusted, mode);
2693 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
2694 *hdisplay = adjusted.crtc_hdisplay;
2695 *vdisplay = adjusted.crtc_vdisplay;
2697 EXPORT_SYMBOL(drm_crtc_get_hv_timing);
2700 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2702 * @crtc: CRTC that framebuffer will be displayed on
2705 * @mode: mode that framebuffer will be displayed under
2706 * @fb: framebuffer to check size of
2708 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2710 const struct drm_display_mode *mode,
2711 const struct drm_framebuffer *fb)
2714 int hdisplay, vdisplay;
2716 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
2719 crtc->primary->state->rotation & (BIT(DRM_ROTATE_90) |
2720 BIT(DRM_ROTATE_270)))
2721 swap(hdisplay, vdisplay);
2723 return check_src_coords(x << 16, y << 16,
2724 hdisplay << 16, vdisplay << 16, fb);
2726 EXPORT_SYMBOL(drm_crtc_check_viewport);
2729 * drm_mode_setcrtc - set CRTC configuration
2730 * @dev: drm device for the ioctl
2731 * @data: data pointer for the ioctl
2732 * @file_priv: drm file for the ioctl call
2734 * Build a new CRTC configuration based on user request.
2736 * Called by the user via ioctl.
2739 * Zero on success, negative errno on failure.
2741 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2742 struct drm_file *file_priv)
2744 struct drm_mode_config *config = &dev->mode_config;
2745 struct drm_mode_crtc *crtc_req = data;
2746 struct drm_crtc *crtc;
2747 struct drm_connector **connector_set = NULL, *connector;
2748 struct drm_framebuffer *fb = NULL;
2749 struct drm_display_mode *mode = NULL;
2750 struct drm_mode_set set;
2751 uint32_t __user *set_connectors_ptr;
2755 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2759 * Universal plane src offsets are only 16.16, prevent havoc for
2760 * drivers using universal plane code internally.
2762 if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000)
2765 drm_modeset_lock_all(dev);
2766 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2768 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2772 DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name);
2774 if (crtc_req->mode_valid) {
2775 /* If we have a mode we need a framebuffer. */
2776 /* If we pass -1, set the mode with the currently bound fb */
2777 if (crtc_req->fb_id == -1) {
2778 if (!crtc->primary->fb) {
2779 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2783 fb = crtc->primary->fb;
2784 /* Make refcounting symmetric with the lookup path. */
2785 drm_framebuffer_reference(fb);
2787 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2789 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2796 mode = drm_mode_create(dev);
2802 ret = drm_mode_convert_umode(mode, &crtc_req->mode);
2804 DRM_DEBUG_KMS("Invalid mode\n");
2808 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2811 * Check whether the primary plane supports the fb pixel format.
2812 * Drivers not implementing the universal planes API use a
2813 * default formats list provided by the DRM core which doesn't
2814 * match real hardware capabilities. Skip the check in that
2817 if (!crtc->primary->format_default) {
2818 ret = drm_plane_check_pixel_format(crtc->primary,
2821 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2822 drm_get_format_name(fb->pixel_format));
2827 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2834 if (crtc_req->count_connectors == 0 && mode) {
2835 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2840 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2841 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2842 crtc_req->count_connectors);
2847 if (crtc_req->count_connectors > 0) {
2850 /* Avoid unbounded kernel memory allocation */
2851 if (crtc_req->count_connectors > config->num_connector) {
2856 connector_set = kmalloc_array(crtc_req->count_connectors,
2857 sizeof(struct drm_connector *),
2859 if (!connector_set) {
2864 for (i = 0; i < crtc_req->count_connectors; i++) {
2865 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2866 if (get_user(out_id, &set_connectors_ptr[i])) {
2871 connector = drm_connector_find(dev, out_id);
2873 DRM_DEBUG_KMS("Connector id %d unknown\n",
2878 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2882 connector_set[i] = connector;
2887 set.x = crtc_req->x;
2888 set.y = crtc_req->y;
2890 set.connectors = connector_set;
2891 set.num_connectors = crtc_req->count_connectors;
2893 ret = drm_mode_set_config_internal(&set);
2897 drm_framebuffer_unreference(fb);
2899 kfree(connector_set);
2900 drm_mode_destroy(dev, mode);
2901 drm_modeset_unlock_all(dev);
2906 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2907 * universal plane handler call
2908 * @crtc: crtc to update cursor for
2909 * @req: data pointer for the ioctl
2910 * @file_priv: drm file for the ioctl call
2912 * Legacy cursor ioctl's work directly with driver buffer handles. To
2913 * translate legacy ioctl calls into universal plane handler calls, we need to
2914 * wrap the native buffer handle in a drm_framebuffer.
2916 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2917 * buffer with a pitch of 4*width; the universal plane interface should be used
2918 * directly in cases where the hardware can support other buffer settings and
2919 * userspace wants to make use of these capabilities.
2922 * Zero on success, negative errno on failure.
2924 static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2925 struct drm_mode_cursor2 *req,
2926 struct drm_file *file_priv)
2928 struct drm_device *dev = crtc->dev;
2929 struct drm_framebuffer *fb = NULL;
2930 struct drm_mode_fb_cmd2 fbreq = {
2931 .width = req->width,
2932 .height = req->height,
2933 .pixel_format = DRM_FORMAT_ARGB8888,
2934 .pitches = { req->width * 4 },
2935 .handles = { req->handle },
2937 int32_t crtc_x, crtc_y;
2938 uint32_t crtc_w = 0, crtc_h = 0;
2939 uint32_t src_w = 0, src_h = 0;
2942 BUG_ON(!crtc->cursor);
2943 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
2946 * Obtain fb we'll be using (either new or existing) and take an extra
2947 * reference to it if fb != null. setplane will take care of dropping
2948 * the reference if the plane update fails.
2950 if (req->flags & DRM_MODE_CURSOR_BO) {
2952 fb = internal_framebuffer_create(dev, &fbreq, file_priv);
2954 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2961 fb = crtc->cursor->fb;
2963 drm_framebuffer_reference(fb);
2966 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2970 crtc_x = crtc->cursor_x;
2971 crtc_y = crtc->cursor_y;
2976 crtc_h = fb->height;
2977 src_w = fb->width << 16;
2978 src_h = fb->height << 16;
2982 * setplane_internal will take care of deref'ing either the old or new
2983 * framebuffer depending on success.
2985 ret = __setplane_internal(crtc->cursor, crtc, fb,
2986 crtc_x, crtc_y, crtc_w, crtc_h,
2987 0, 0, src_w, src_h);
2989 /* Update successful; save new cursor position, if necessary */
2990 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2991 crtc->cursor_x = req->x;
2992 crtc->cursor_y = req->y;
2998 static int drm_mode_cursor_common(struct drm_device *dev,
2999 struct drm_mode_cursor2 *req,
3000 struct drm_file *file_priv)
3002 struct drm_crtc *crtc;
3005 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3008 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
3011 crtc = drm_crtc_find(dev, req->crtc_id);
3013 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
3018 * If this crtc has a universal cursor plane, call that plane's update
3019 * handler rather than using legacy cursor handlers.
3021 drm_modeset_lock_crtc(crtc, crtc->cursor);
3023 ret = drm_mode_cursor_universal(crtc, req, file_priv);
3027 if (req->flags & DRM_MODE_CURSOR_BO) {
3028 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
3032 /* Turns off the cursor if handle is 0 */
3033 if (crtc->funcs->cursor_set2)
3034 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
3035 req->width, req->height, req->hot_x, req->hot_y);
3037 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
3038 req->width, req->height);
3041 if (req->flags & DRM_MODE_CURSOR_MOVE) {
3042 if (crtc->funcs->cursor_move) {
3043 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
3050 drm_modeset_unlock_crtc(crtc);
3058 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
3059 * @dev: drm device for the ioctl
3060 * @data: data pointer for the ioctl
3061 * @file_priv: drm file for the ioctl call
3063 * Set the cursor configuration based on user request.
3065 * Called by the user via ioctl.
3068 * Zero on success, negative errno on failure.
3070 int drm_mode_cursor_ioctl(struct drm_device *dev,
3071 void *data, struct drm_file *file_priv)
3073 struct drm_mode_cursor *req = data;
3074 struct drm_mode_cursor2 new_req;
3076 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
3077 new_req.hot_x = new_req.hot_y = 0;
3079 return drm_mode_cursor_common(dev, &new_req, file_priv);
3083 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3084 * @dev: drm device for the ioctl
3085 * @data: data pointer for the ioctl
3086 * @file_priv: drm file for the ioctl call
3088 * Set the cursor configuration based on user request. This implements the 2nd
3089 * version of the cursor ioctl, which allows userspace to additionally specify
3090 * the hotspot of the pointer.
3092 * Called by the user via ioctl.
3095 * Zero on success, negative errno on failure.
3097 int drm_mode_cursor2_ioctl(struct drm_device *dev,
3098 void *data, struct drm_file *file_priv)
3100 struct drm_mode_cursor2 *req = data;
3102 return drm_mode_cursor_common(dev, req, file_priv);
3106 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3107 * @bpp: bits per pixels
3108 * @depth: bit depth per pixel
3110 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3111 * Useful in fbdev emulation code, since that deals in those values.
3113 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
3119 fmt = DRM_FORMAT_C8;
3123 fmt = DRM_FORMAT_XRGB1555;
3125 fmt = DRM_FORMAT_RGB565;
3128 fmt = DRM_FORMAT_RGB888;
3132 fmt = DRM_FORMAT_XRGB8888;
3133 else if (depth == 30)
3134 fmt = DRM_FORMAT_XRGB2101010;
3136 fmt = DRM_FORMAT_ARGB8888;
3139 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3140 fmt = DRM_FORMAT_XRGB8888;
3146 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3149 * drm_mode_addfb - add an FB to the graphics configuration
3150 * @dev: drm device for the ioctl
3151 * @data: data pointer for the ioctl
3152 * @file_priv: drm file for the ioctl call
3154 * Add a new FB to the specified CRTC, given a user request. This is the
3155 * original addfb ioctl which only supported RGB formats.
3157 * Called by the user via ioctl.
3160 * Zero on success, negative errno on failure.
3162 int drm_mode_addfb(struct drm_device *dev,
3163 void *data, struct drm_file *file_priv)
3165 struct drm_mode_fb_cmd *or = data;
3166 struct drm_mode_fb_cmd2 r = {};
3169 /* convert to new format and call new ioctl */
3170 r.fb_id = or->fb_id;
3171 r.width = or->width;
3172 r.height = or->height;
3173 r.pitches[0] = or->pitch;
3174 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3175 r.handles[0] = or->handle;
3177 ret = drm_mode_addfb2(dev, &r, file_priv);
3181 or->fb_id = r.fb_id;
3186 static int format_check(const struct drm_mode_fb_cmd2 *r)
3188 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3192 case DRM_FORMAT_RGB332:
3193 case DRM_FORMAT_BGR233:
3194 case DRM_FORMAT_XRGB4444:
3195 case DRM_FORMAT_XBGR4444:
3196 case DRM_FORMAT_RGBX4444:
3197 case DRM_FORMAT_BGRX4444:
3198 case DRM_FORMAT_ARGB4444:
3199 case DRM_FORMAT_ABGR4444:
3200 case DRM_FORMAT_RGBA4444:
3201 case DRM_FORMAT_BGRA4444:
3202 case DRM_FORMAT_XRGB1555:
3203 case DRM_FORMAT_XBGR1555:
3204 case DRM_FORMAT_RGBX5551:
3205 case DRM_FORMAT_BGRX5551:
3206 case DRM_FORMAT_ARGB1555:
3207 case DRM_FORMAT_ABGR1555:
3208 case DRM_FORMAT_RGBA5551:
3209 case DRM_FORMAT_BGRA5551:
3210 case DRM_FORMAT_RGB565:
3211 case DRM_FORMAT_BGR565:
3212 case DRM_FORMAT_RGB888:
3213 case DRM_FORMAT_BGR888:
3214 case DRM_FORMAT_XRGB8888:
3215 case DRM_FORMAT_XBGR8888:
3216 case DRM_FORMAT_RGBX8888:
3217 case DRM_FORMAT_BGRX8888:
3218 case DRM_FORMAT_ARGB8888:
3219 case DRM_FORMAT_ABGR8888:
3220 case DRM_FORMAT_RGBA8888:
3221 case DRM_FORMAT_BGRA8888:
3222 case DRM_FORMAT_XRGB2101010:
3223 case DRM_FORMAT_XBGR2101010:
3224 case DRM_FORMAT_RGBX1010102:
3225 case DRM_FORMAT_BGRX1010102:
3226 case DRM_FORMAT_ARGB2101010:
3227 case DRM_FORMAT_ABGR2101010:
3228 case DRM_FORMAT_RGBA1010102:
3229 case DRM_FORMAT_BGRA1010102:
3230 case DRM_FORMAT_YUYV:
3231 case DRM_FORMAT_YVYU:
3232 case DRM_FORMAT_UYVY:
3233 case DRM_FORMAT_VYUY:
3234 case DRM_FORMAT_AYUV:
3235 case DRM_FORMAT_NV12:
3236 case DRM_FORMAT_NV21:
3237 case DRM_FORMAT_NV16:
3238 case DRM_FORMAT_NV61:
3239 case DRM_FORMAT_NV24:
3240 case DRM_FORMAT_NV42:
3241 case DRM_FORMAT_YUV410:
3242 case DRM_FORMAT_YVU410:
3243 case DRM_FORMAT_YUV411:
3244 case DRM_FORMAT_YVU411:
3245 case DRM_FORMAT_YUV420:
3246 case DRM_FORMAT_YVU420:
3247 case DRM_FORMAT_YUV422:
3248 case DRM_FORMAT_YVU422:
3249 case DRM_FORMAT_YUV444:
3250 case DRM_FORMAT_YVU444:
3253 DRM_DEBUG_KMS("invalid pixel format %s\n",
3254 drm_get_format_name(r->pixel_format));
3259 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
3261 int ret, hsub, vsub, num_planes, i;
3263 ret = format_check(r);
3265 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3266 drm_get_format_name(r->pixel_format));
3270 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3271 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3272 num_planes = drm_format_num_planes(r->pixel_format);
3274 if (r->width == 0 || r->width % hsub) {
3275 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
3279 if (r->height == 0 || r->height % vsub) {
3280 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
3284 for (i = 0; i < num_planes; i++) {
3285 unsigned int width = r->width / (i != 0 ? hsub : 1);
3286 unsigned int height = r->height / (i != 0 ? vsub : 1);
3287 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
3289 if (!r->handles[i]) {
3290 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
3294 if ((uint64_t) width * cpp > UINT_MAX)
3297 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3300 if (r->pitches[i] < width * cpp) {
3301 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
3305 if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
3306 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3311 /* modifier specific checks: */
3312 switch (r->modifier[i]) {
3313 case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE:
3314 /* NOTE: the pitch restriction may be lifted later if it turns
3315 * out that no hw has this restriction:
3317 if (r->pixel_format != DRM_FORMAT_NV12 ||
3318 width % 128 || height % 32 ||
3319 r->pitches[i] % 128) {
3320 DRM_DEBUG_KMS("bad modifier data for plane %d\n", i);
3330 for (i = num_planes; i < 4; i++) {
3331 if (r->modifier[i]) {
3332 DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i);
3336 /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
3337 if (!(r->flags & DRM_MODE_FB_MODIFIERS))
3340 if (r->handles[i]) {
3341 DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i);
3345 if (r->pitches[i]) {
3346 DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i);
3350 if (r->offsets[i]) {
3351 DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i);
3359 static struct drm_framebuffer *
3360 internal_framebuffer_create(struct drm_device *dev,
3361 const struct drm_mode_fb_cmd2 *r,
3362 struct drm_file *file_priv)
3364 struct drm_mode_config *config = &dev->mode_config;
3365 struct drm_framebuffer *fb;
3368 if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
3369 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
3370 return ERR_PTR(-EINVAL);
3373 if ((config->min_width > r->width) || (r->width > config->max_width)) {
3374 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3375 r->width, config->min_width, config->max_width);
3376 return ERR_PTR(-EINVAL);
3378 if ((config->min_height > r->height) || (r->height > config->max_height)) {
3379 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3380 r->height, config->min_height, config->max_height);
3381 return ERR_PTR(-EINVAL);
3384 if (r->flags & DRM_MODE_FB_MODIFIERS &&
3385 !dev->mode_config.allow_fb_modifiers) {
3386 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3387 return ERR_PTR(-EINVAL);
3390 ret = framebuffer_check(r);
3392 return ERR_PTR(ret);
3394 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
3396 DRM_DEBUG_KMS("could not create framebuffer\n");
3404 * drm_mode_addfb2 - add an FB to the graphics configuration
3405 * @dev: drm device for the ioctl
3406 * @data: data pointer for the ioctl
3407 * @file_priv: drm file for the ioctl call
3409 * Add a new FB to the specified CRTC, given a user request with format. This is
3410 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3411 * and uses fourcc codes as pixel format specifiers.
3413 * Called by the user via ioctl.
3416 * Zero on success, negative errno on failure.
3418 int drm_mode_addfb2(struct drm_device *dev,
3419 void *data, struct drm_file *file_priv)
3421 struct drm_mode_fb_cmd2 *r = data;
3422 struct drm_framebuffer *fb;
3424 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3427 fb = internal_framebuffer_create(dev, r, file_priv);
3431 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3432 r->fb_id = fb->base.id;
3434 /* Transfer ownership to the filp for reaping on close */
3435 mutex_lock(&file_priv->fbs_lock);
3436 list_add(&fb->filp_head, &file_priv->fbs);
3437 mutex_unlock(&file_priv->fbs_lock);
3443 * drm_mode_rmfb - remove an FB from the configuration
3444 * @dev: drm device for the ioctl
3445 * @data: data pointer for the ioctl
3446 * @file_priv: drm file for the ioctl call
3448 * Remove the FB specified by the user.
3450 * Called by the user via ioctl.
3453 * Zero on success, negative errno on failure.
3455 int drm_mode_rmfb(struct drm_device *dev,
3456 void *data, struct drm_file *file_priv)
3458 struct drm_framebuffer *fb = NULL;
3459 struct drm_framebuffer *fbl = NULL;
3460 uint32_t *id = data;
3463 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3466 fb = drm_framebuffer_lookup(dev, *id);
3470 mutex_lock(&file_priv->fbs_lock);
3471 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3475 mutex_unlock(&file_priv->fbs_lock);
3479 list_del_init(&fb->filp_head);
3480 mutex_unlock(&file_priv->fbs_lock);
3482 /* we now own the reference that was stored in the fbs list */
3483 drm_framebuffer_unreference(fb);
3485 /* drop the reference we picked up in framebuffer lookup */
3486 drm_framebuffer_unreference(fb);
3491 drm_framebuffer_unreference(fb);
3496 * drm_mode_getfb - get FB info
3497 * @dev: drm device for the ioctl
3498 * @data: data pointer for the ioctl
3499 * @file_priv: drm file for the ioctl call
3501 * Lookup the FB given its ID and return info about it.
3503 * Called by the user via ioctl.
3506 * Zero on success, negative errno on failure.
3508 int drm_mode_getfb(struct drm_device *dev,
3509 void *data, struct drm_file *file_priv)
3511 struct drm_mode_fb_cmd *r = data;
3512 struct drm_framebuffer *fb;
3515 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3518 fb = drm_framebuffer_lookup(dev, r->fb_id);
3522 r->height = fb->height;
3523 r->width = fb->width;
3524 r->depth = fb->depth;
3525 r->bpp = fb->bits_per_pixel;
3526 r->pitch = fb->pitches[0];
3527 if (fb->funcs->create_handle) {
3528 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
3529 drm_is_control_client(file_priv)) {
3530 ret = fb->funcs->create_handle(fb, file_priv,
3533 /* GET_FB() is an unprivileged ioctl so we must not
3534 * return a buffer-handle to non-master processes! For
3535 * backwards-compatibility reasons, we cannot make
3536 * GET_FB() privileged, so just return an invalid handle
3537 * for non-masters. */
3545 drm_framebuffer_unreference(fb);
3551 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3552 * @dev: drm device for the ioctl
3553 * @data: data pointer for the ioctl
3554 * @file_priv: drm file for the ioctl call
3556 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3557 * rectangle list. Generic userspace which does frontbuffer rendering must call
3558 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3559 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3561 * Modesetting drivers which always update the frontbuffer do not need to
3562 * implement the corresponding ->dirty framebuffer callback.
3564 * Called by the user via ioctl.
3567 * Zero on success, negative errno on failure.
3569 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3570 void *data, struct drm_file *file_priv)
3572 struct drm_clip_rect __user *clips_ptr;
3573 struct drm_clip_rect *clips = NULL;
3574 struct drm_mode_fb_dirty_cmd *r = data;
3575 struct drm_framebuffer *fb;
3580 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3583 fb = drm_framebuffer_lookup(dev, r->fb_id);
3587 num_clips = r->num_clips;
3588 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3590 if (!num_clips != !clips_ptr) {
3595 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3597 /* If userspace annotates copy, clips must come in pairs */
3598 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3603 if (num_clips && clips_ptr) {
3604 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3608 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
3614 ret = copy_from_user(clips, clips_ptr,
3615 num_clips * sizeof(*clips));
3622 if (fb->funcs->dirty) {
3623 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3632 drm_framebuffer_unreference(fb);
3639 * drm_fb_release - remove and free the FBs on this file
3640 * @priv: drm file for the ioctl
3642 * Destroy all the FBs associated with @filp.
3644 * Called by the user via ioctl.
3647 * Zero on success, negative errno on failure.
3649 void drm_fb_release(struct drm_file *priv)
3651 struct drm_framebuffer *fb, *tfb;
3654 * When the file gets released that means no one else can access the fb
3655 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3656 * avoid upsetting lockdep since the universal cursor code adds a
3657 * framebuffer while holding mutex locks.
3659 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3660 * locks is impossible here since no one else but this function can get
3663 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3664 list_del_init(&fb->filp_head);
3666 /* This drops the fpriv->fbs reference. */
3667 drm_framebuffer_unreference(fb);
3672 * drm_property_create - create a new property type
3674 * @flags: flags specifying the property type
3675 * @name: name of the property
3676 * @num_values: number of pre-defined values
3678 * This creates a new generic drm property which can then be attached to a drm
3679 * object with drm_object_attach_property. The returned property object must be
3680 * freed with drm_property_destroy.
3682 * Note that the DRM core keeps a per-device list of properties and that, if
3683 * drm_mode_config_cleanup() is called, it will destroy all properties created
3687 * A pointer to the newly created property on success, NULL on failure.
3689 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3690 const char *name, int num_values)
3692 struct drm_property *property = NULL;
3695 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3699 property->dev = dev;
3702 property->values = kcalloc(num_values, sizeof(uint64_t),
3704 if (!property->values)
3708 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3712 property->flags = flags;
3713 property->num_values = num_values;
3714 INIT_LIST_HEAD(&property->enum_list);
3717 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3718 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3721 list_add_tail(&property->head, &dev->mode_config.property_list);
3723 WARN_ON(!drm_property_type_valid(property));
3727 kfree(property->values);
3731 EXPORT_SYMBOL(drm_property_create);
3734 * drm_property_create_enum - create a new enumeration property type
3736 * @flags: flags specifying the property type
3737 * @name: name of the property
3738 * @props: enumeration lists with property values
3739 * @num_values: number of pre-defined values
3741 * This creates a new generic drm property which can then be attached to a drm
3742 * object with drm_object_attach_property. The returned property object must be
3743 * freed with drm_property_destroy.
3745 * Userspace is only allowed to set one of the predefined values for enumeration
3749 * A pointer to the newly created property on success, NULL on failure.
3751 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3753 const struct drm_prop_enum_list *props,
3756 struct drm_property *property;
3759 flags |= DRM_MODE_PROP_ENUM;
3761 property = drm_property_create(dev, flags, name, num_values);
3765 for (i = 0; i < num_values; i++) {
3766 ret = drm_property_add_enum(property, i,
3770 drm_property_destroy(dev, property);
3777 EXPORT_SYMBOL(drm_property_create_enum);
3780 * drm_property_create_bitmask - create a new bitmask property type
3782 * @flags: flags specifying the property type
3783 * @name: name of the property
3784 * @props: enumeration lists with property bitflags
3785 * @num_props: size of the @props array
3786 * @supported_bits: bitmask of all supported enumeration values
3788 * This creates a new bitmask drm property which can then be attached to a drm
3789 * object with drm_object_attach_property. The returned property object must be
3790 * freed with drm_property_destroy.
3792 * Compared to plain enumeration properties userspace is allowed to set any
3793 * or'ed together combination of the predefined property bitflag values
3796 * A pointer to the newly created property on success, NULL on failure.
3798 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3799 int flags, const char *name,
3800 const struct drm_prop_enum_list *props,
3802 uint64_t supported_bits)
3804 struct drm_property *property;
3805 int i, ret, index = 0;
3806 int num_values = hweight64(supported_bits);
3808 flags |= DRM_MODE_PROP_BITMASK;
3810 property = drm_property_create(dev, flags, name, num_values);
3813 for (i = 0; i < num_props; i++) {
3814 if (!(supported_bits & (1ULL << props[i].type)))
3817 if (WARN_ON(index >= num_values)) {
3818 drm_property_destroy(dev, property);
3822 ret = drm_property_add_enum(property, index++,
3826 drm_property_destroy(dev, property);
3833 EXPORT_SYMBOL(drm_property_create_bitmask);
3835 static struct drm_property *property_create_range(struct drm_device *dev,
3836 int flags, const char *name,
3837 uint64_t min, uint64_t max)
3839 struct drm_property *property;
3841 property = drm_property_create(dev, flags, name, 2);
3845 property->values[0] = min;
3846 property->values[1] = max;
3852 * drm_property_create_range - create a new unsigned ranged property type
3854 * @flags: flags specifying the property type
3855 * @name: name of the property
3856 * @min: minimum value of the property
3857 * @max: maximum value of the property
3859 * This creates a new generic drm property which can then be attached to a drm
3860 * object with drm_object_attach_property. The returned property object must be
3861 * freed with drm_property_destroy.
3863 * Userspace is allowed to set any unsigned integer value in the (min, max)
3867 * A pointer to the newly created property on success, NULL on failure.
3869 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3871 uint64_t min, uint64_t max)
3873 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3876 EXPORT_SYMBOL(drm_property_create_range);
3879 * drm_property_create_signed_range - create a new signed ranged property type
3881 * @flags: flags specifying the property type
3882 * @name: name of the property
3883 * @min: minimum value of the property
3884 * @max: maximum value of the property
3886 * This creates a new generic drm property which can then be attached to a drm
3887 * object with drm_object_attach_property. The returned property object must be
3888 * freed with drm_property_destroy.
3890 * Userspace is allowed to set any signed integer value in the (min, max)
3894 * A pointer to the newly created property on success, NULL on failure.
3896 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3897 int flags, const char *name,
3898 int64_t min, int64_t max)
3900 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3901 name, I642U64(min), I642U64(max));
3903 EXPORT_SYMBOL(drm_property_create_signed_range);
3906 * drm_property_create_object - create a new object property type
3908 * @flags: flags specifying the property type
3909 * @name: name of the property
3910 * @type: object type from DRM_MODE_OBJECT_* defines
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 only allowed to set this to any property value of the given
3917 * @type. Only useful for atomic properties, which is enforced.
3920 * A pointer to the newly created property on success, NULL on failure.
3922 struct drm_property *drm_property_create_object(struct drm_device *dev,
3923 int flags, const char *name, uint32_t type)
3925 struct drm_property *property;
3927 flags |= DRM_MODE_PROP_OBJECT;
3929 if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
3932 property = drm_property_create(dev, flags, name, 1);
3936 property->values[0] = type;
3940 EXPORT_SYMBOL(drm_property_create_object);
3943 * drm_property_create_bool - create a new boolean property type
3945 * @flags: flags specifying the property type
3946 * @name: name of the property
3948 * This creates a new generic drm property which can then be attached to a drm
3949 * object with drm_object_attach_property. The returned property object must be
3950 * freed with drm_property_destroy.
3952 * This is implemented as a ranged property with only {0, 1} as valid values.
3955 * A pointer to the newly created property on success, NULL on failure.
3957 struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
3960 return drm_property_create_range(dev, flags, name, 0, 1);
3962 EXPORT_SYMBOL(drm_property_create_bool);
3965 * drm_property_add_enum - add a possible value to an enumeration property
3966 * @property: enumeration property to change
3967 * @index: index of the new enumeration
3968 * @value: value of the new enumeration
3969 * @name: symbolic name of the new enumeration
3971 * This functions adds enumerations to a property.
3973 * It's use is deprecated, drivers should use one of the more specific helpers
3974 * to directly create the property with all enumerations already attached.
3977 * Zero on success, error code on failure.
3979 int drm_property_add_enum(struct drm_property *property, int index,
3980 uint64_t value, const char *name)
3982 struct drm_property_enum *prop_enum;
3984 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3985 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
3989 * Bitmask enum properties have the additional constraint of values
3992 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3996 if (!list_empty(&property->enum_list)) {
3997 list_for_each_entry(prop_enum, &property->enum_list, head) {
3998 if (prop_enum->value == value) {
3999 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
4000 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
4006 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
4010 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
4011 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
4012 prop_enum->value = value;
4014 property->values[index] = value;
4015 list_add_tail(&prop_enum->head, &property->enum_list);
4018 EXPORT_SYMBOL(drm_property_add_enum);
4021 * drm_property_destroy - destroy a drm property
4023 * @property: property to destry
4025 * This function frees a property including any attached resources like
4026 * enumeration values.
4028 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
4030 struct drm_property_enum *prop_enum, *pt;
4032 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
4033 list_del(&prop_enum->head);
4037 if (property->num_values)
4038 kfree(property->values);
4039 drm_mode_object_unregister(dev, &property->base);
4040 list_del(&property->head);
4043 EXPORT_SYMBOL(drm_property_destroy);
4046 * drm_object_attach_property - attach a property to a modeset object
4047 * @obj: drm modeset object
4048 * @property: property to attach
4049 * @init_val: initial value of the property
4051 * This attaches the given property to the modeset object with the given initial
4052 * value. Currently this function cannot fail since the properties are stored in
4053 * a statically sized array.
4055 void drm_object_attach_property(struct drm_mode_object *obj,
4056 struct drm_property *property,
4059 int count = obj->properties->count;
4061 if (count == DRM_OBJECT_MAX_PROPERTY) {
4062 WARN(1, "Failed to attach object property (type: 0x%x). Please "
4063 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
4064 "you see this message on the same object type.\n",
4069 obj->properties->properties[count] = property;
4070 obj->properties->values[count] = init_val;
4071 obj->properties->count++;
4072 if (property->flags & DRM_MODE_PROP_ATOMIC)
4073 obj->properties->atomic_count++;
4075 EXPORT_SYMBOL(drm_object_attach_property);
4078 * drm_object_property_set_value - set the value of a property
4079 * @obj: drm mode object to set property value for
4080 * @property: property to set
4081 * @val: value the property should be set to
4083 * This functions sets a given property on a given object. This function only
4084 * changes the software state of the property, it does not call into the
4085 * driver's ->set_property callback.
4088 * Zero on success, error code on failure.
4090 int drm_object_property_set_value(struct drm_mode_object *obj,
4091 struct drm_property *property, uint64_t val)
4095 for (i = 0; i < obj->properties->count; i++) {
4096 if (obj->properties->properties[i] == property) {
4097 obj->properties->values[i] = val;
4104 EXPORT_SYMBOL(drm_object_property_set_value);
4107 * drm_object_property_get_value - retrieve the value of a property
4108 * @obj: drm mode object to get property value from
4109 * @property: property to retrieve
4110 * @val: storage for the property value
4112 * This function retrieves the softare state of the given property for the given
4113 * property. Since there is no driver callback to retrieve the current property
4114 * value this might be out of sync with the hardware, depending upon the driver
4118 * Zero on success, error code on failure.
4120 int drm_object_property_get_value(struct drm_mode_object *obj,
4121 struct drm_property *property, uint64_t *val)
4125 /* read-only properties bypass atomic mechanism and still store
4126 * their value in obj->properties->values[].. mostly to avoid
4127 * having to deal w/ EDID and similar props in atomic paths:
4129 if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
4130 !(property->flags & DRM_MODE_PROP_IMMUTABLE))
4131 return drm_atomic_get_property(obj, property, val);
4133 for (i = 0; i < obj->properties->count; i++) {
4134 if (obj->properties->properties[i] == property) {
4135 *val = obj->properties->values[i];
4142 EXPORT_SYMBOL(drm_object_property_get_value);
4145 * drm_mode_getproperty_ioctl - get the property metadata
4148 * @file_priv: DRM file info
4150 * This function retrieves the metadata for a given property, like the different
4151 * possible values for an enum property or the limits for a range property.
4153 * Blob properties are special
4155 * Called by the user via ioctl.
4158 * Zero on success, negative errno on failure.
4160 int drm_mode_getproperty_ioctl(struct drm_device *dev,
4161 void *data, struct drm_file *file_priv)
4163 struct drm_mode_get_property *out_resp = data;
4164 struct drm_property *property;
4166 int value_count = 0;
4169 struct drm_property_enum *prop_enum;
4170 struct drm_mode_property_enum __user *enum_ptr;
4171 uint64_t __user *values_ptr;
4173 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4176 drm_modeset_lock_all(dev);
4177 property = drm_property_find(dev, out_resp->prop_id);
4183 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4184 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4185 list_for_each_entry(prop_enum, &property->enum_list, head)
4189 value_count = property->num_values;
4191 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
4192 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
4193 out_resp->flags = property->flags;
4195 if ((out_resp->count_values >= value_count) && value_count) {
4196 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
4197 for (i = 0; i < value_count; i++) {
4198 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
4204 out_resp->count_values = value_count;
4206 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4207 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4208 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
4210 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
4211 list_for_each_entry(prop_enum, &property->enum_list, head) {
4213 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
4218 if (copy_to_user(&enum_ptr[copied].name,
4219 &prop_enum->name, DRM_PROP_NAME_LEN)) {
4226 out_resp->count_enum_blobs = enum_count;
4230 * NOTE: The idea seems to have been to use this to read all the blob
4231 * property values. But nothing ever added them to the corresponding
4232 * list, userspace always used the special-purpose get_blob ioctl to
4233 * read the value for a blob property. It also doesn't make a lot of
4234 * sense to return values here when everything else is just metadata for
4235 * the property itself.
4237 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4238 out_resp->count_enum_blobs = 0;
4240 drm_modeset_unlock_all(dev);
4245 * drm_property_create_blob - Create new blob property
4247 * Creates a new blob property for a specified DRM device, optionally
4250 * @dev: DRM device to create property for
4251 * @length: Length to allocate for blob data
4252 * @data: If specified, copies data into blob
4255 * New blob property with a single reference on success, or an ERR_PTR
4258 struct drm_property_blob *
4259 drm_property_create_blob(struct drm_device *dev, size_t length,
4262 struct drm_property_blob *blob;
4265 if (!length || length > ULONG_MAX - sizeof(struct drm_property_blob))
4266 return ERR_PTR(-EINVAL);
4268 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
4270 return ERR_PTR(-ENOMEM);
4272 /* This must be explicitly initialised, so we can safely call list_del
4273 * on it in the removal handler, even if it isn't in a file list. */
4274 INIT_LIST_HEAD(&blob->head_file);
4275 blob->length = length;
4279 memcpy(blob->data, data, length);
4281 mutex_lock(&dev->mode_config.blob_lock);
4283 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
4286 mutex_unlock(&dev->mode_config.blob_lock);
4287 return ERR_PTR(-EINVAL);
4290 kref_init(&blob->refcount);
4292 list_add_tail(&blob->head_global,
4293 &dev->mode_config.property_blob_list);
4295 mutex_unlock(&dev->mode_config.blob_lock);
4299 EXPORT_SYMBOL(drm_property_create_blob);
4302 * drm_property_free_blob - Blob property destructor
4304 * Internal free function for blob properties; must not be used directly.
4308 static void drm_property_free_blob(struct kref *kref)
4310 struct drm_property_blob *blob =
4311 container_of(kref, struct drm_property_blob, refcount);
4313 WARN_ON(!mutex_is_locked(&blob->dev->mode_config.blob_lock));
4315 list_del(&blob->head_global);
4316 list_del(&blob->head_file);
4317 drm_mode_object_unregister(blob->dev, &blob->base);
4323 * drm_property_unreference_blob - Unreference a blob property
4325 * Drop a reference on a blob property. May free the object.
4327 * @blob: Pointer to blob property
4329 void drm_property_unreference_blob(struct drm_property_blob *blob)
4331 struct drm_device *dev;
4338 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4340 if (kref_put_mutex(&blob->refcount, drm_property_free_blob,
4341 &dev->mode_config.blob_lock))
4342 mutex_unlock(&dev->mode_config.blob_lock);
4344 might_lock(&dev->mode_config.blob_lock);
4346 EXPORT_SYMBOL(drm_property_unreference_blob);
4349 * drm_property_unreference_blob_locked - Unreference a blob property with blob_lock held
4351 * Drop a reference on a blob property. May free the object. This must be
4352 * called with blob_lock held.
4354 * @blob: Pointer to blob property
4356 static void drm_property_unreference_blob_locked(struct drm_property_blob *blob)
4361 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4363 kref_put(&blob->refcount, drm_property_free_blob);
4367 * drm_property_destroy_user_blobs - destroy all blobs created by this client
4369 * @file_priv: destroy all blobs owned by this file handle
4371 void drm_property_destroy_user_blobs(struct drm_device *dev,
4372 struct drm_file *file_priv)
4374 struct drm_property_blob *blob, *bt;
4376 mutex_lock(&dev->mode_config.blob_lock);
4378 list_for_each_entry_safe(blob, bt, &file_priv->blobs, head_file) {
4379 list_del_init(&blob->head_file);
4380 drm_property_unreference_blob_locked(blob);
4383 mutex_unlock(&dev->mode_config.blob_lock);
4387 * drm_property_reference_blob - Take a reference on an existing property
4389 * Take a new reference on an existing blob property.
4391 * @blob: Pointer to blob property
4393 struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob)
4395 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4396 kref_get(&blob->refcount);
4399 EXPORT_SYMBOL(drm_property_reference_blob);
4402 * Like drm_property_lookup_blob, but does not return an additional reference.
4403 * Must be called with blob_lock held.
4405 static struct drm_property_blob *__drm_property_lookup_blob(struct drm_device *dev,
4408 struct drm_mode_object *obj = NULL;
4409 struct drm_property_blob *blob;
4411 WARN_ON(!mutex_is_locked(&dev->mode_config.blob_lock));
4413 mutex_lock(&dev->mode_config.idr_mutex);
4414 obj = idr_find(&dev->mode_config.crtc_idr, id);
4415 if (!obj || (obj->type != DRM_MODE_OBJECT_BLOB) || (obj->id != id))
4418 blob = obj_to_blob(obj);
4419 mutex_unlock(&dev->mode_config.idr_mutex);
4425 * drm_property_lookup_blob - look up a blob property and take a reference
4427 * @id: id of the blob property
4429 * If successful, this takes an additional reference to the blob property.
4430 * callers need to make sure to eventually unreference the returned property
4431 * again, using @drm_property_unreference_blob.
4433 struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
4436 struct drm_property_blob *blob;
4438 mutex_lock(&dev->mode_config.blob_lock);
4439 blob = __drm_property_lookup_blob(dev, id);
4441 if (!kref_get_unless_zero(&blob->refcount))
4444 mutex_unlock(&dev->mode_config.blob_lock);
4448 EXPORT_SYMBOL(drm_property_lookup_blob);
4451 * drm_property_replace_global_blob - atomically replace existing blob property
4453 * @replace: location of blob property pointer to be replaced
4454 * @length: length of data for new blob, or 0 for no data
4455 * @data: content for new blob, or NULL for no data
4456 * @obj_holds_id: optional object for property holding blob ID
4457 * @prop_holds_id: optional property holding blob ID
4458 * @return 0 on success or error on failure
4460 * This function will atomically replace a global property in the blob list,
4461 * optionally updating a property which holds the ID of that property. It is
4462 * guaranteed to be atomic: no caller will be allowed to see intermediate
4463 * results, and either the entire operation will succeed and clean up the
4464 * previous property, or it will fail and the state will be unchanged.
4466 * If length is 0 or data is NULL, no new blob will be created, and the holding
4467 * property, if specified, will be set to 0.
4469 * Access to the replace pointer is assumed to be protected by the caller, e.g.
4470 * by holding the relevant modesetting object lock for its parent.
4472 * For example, a drm_connector has a 'PATH' property, which contains the ID
4473 * of a blob property with the value of the MST path information. Calling this
4474 * function with replace pointing to the connector's path_blob_ptr, length and
4475 * data set for the new path information, obj_holds_id set to the connector's
4476 * base object, and prop_holds_id set to the path property name, will perform
4477 * a completely atomic update. The access to path_blob_ptr is protected by the
4478 * caller holding a lock on the connector.
4480 static int drm_property_replace_global_blob(struct drm_device *dev,
4481 struct drm_property_blob **replace,
4484 struct drm_mode_object *obj_holds_id,
4485 struct drm_property *prop_holds_id)
4487 struct drm_property_blob *new_blob = NULL;
4488 struct drm_property_blob *old_blob = NULL;
4491 WARN_ON(replace == NULL);
4493 old_blob = *replace;
4495 if (length && data) {
4496 new_blob = drm_property_create_blob(dev, length, data);
4497 if (IS_ERR(new_blob))
4498 return PTR_ERR(new_blob);
4501 /* This does not need to be synchronised with blob_lock, as the
4502 * get_properties ioctl locks all modesetting objects, and
4503 * obj_holds_id must be locked before calling here, so we cannot
4504 * have its value out of sync with the list membership modified
4505 * below under blob_lock. */
4507 ret = drm_object_property_set_value(obj_holds_id,
4510 new_blob->base.id : 0);
4515 drm_property_unreference_blob(old_blob);
4516 *replace = new_blob;
4521 drm_property_unreference_blob(new_blob);
4526 * drm_mode_getblob_ioctl - get the contents of a blob property value
4529 * @file_priv: DRM file info
4531 * This function retrieves the contents of a blob property. The value stored in
4532 * an object's blob property is just a normal modeset object id.
4534 * Called by the user via ioctl.
4537 * Zero on success, negative errno on failure.
4539 int drm_mode_getblob_ioctl(struct drm_device *dev,
4540 void *data, struct drm_file *file_priv)
4542 struct drm_mode_get_blob *out_resp = data;
4543 struct drm_property_blob *blob;
4545 void __user *blob_ptr;
4547 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4550 drm_modeset_lock_all(dev);
4551 mutex_lock(&dev->mode_config.blob_lock);
4552 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
4558 if (out_resp->length == blob->length) {
4559 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4560 if (copy_to_user(blob_ptr, blob->data, blob->length)) {
4565 out_resp->length = blob->length;
4568 mutex_unlock(&dev->mode_config.blob_lock);
4569 drm_modeset_unlock_all(dev);
4574 * drm_mode_createblob_ioctl - create a new blob property
4577 * @file_priv: DRM file info
4579 * This function creates a new blob property with user-defined values. In order
4580 * to give us sensible validation and checking when creating, rather than at
4581 * every potential use, we also require a type to be provided upfront.
4583 * Called by the user via ioctl.
4586 * Zero on success, negative errno on failure.
4588 int drm_mode_createblob_ioctl(struct drm_device *dev,
4589 void *data, struct drm_file *file_priv)
4591 struct drm_mode_create_blob *out_resp = data;
4592 struct drm_property_blob *blob;
4593 void __user *blob_ptr;
4596 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4599 blob = drm_property_create_blob(dev, out_resp->length, NULL);
4601 return PTR_ERR(blob);
4603 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4604 if (copy_from_user(blob->data, blob_ptr, out_resp->length)) {
4609 /* Dropping the lock between create_blob and our access here is safe
4610 * as only the same file_priv can remove the blob; at this point, it is
4611 * not associated with any file_priv. */
4612 mutex_lock(&dev->mode_config.blob_lock);
4613 out_resp->blob_id = blob->base.id;
4614 list_add_tail(&blob->head_file, &file_priv->blobs);
4615 mutex_unlock(&dev->mode_config.blob_lock);
4620 drm_property_unreference_blob(blob);
4625 * drm_mode_destroyblob_ioctl - destroy a user blob property
4628 * @file_priv: DRM file info
4630 * Destroy an existing user-defined blob property.
4632 * Called by the user via ioctl.
4635 * Zero on success, negative errno on failure.
4637 int drm_mode_destroyblob_ioctl(struct drm_device *dev,
4638 void *data, struct drm_file *file_priv)
4640 struct drm_mode_destroy_blob *out_resp = data;
4641 struct drm_property_blob *blob = NULL, *bt;
4645 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4648 mutex_lock(&dev->mode_config.blob_lock);
4649 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
4655 /* Ensure the property was actually created by this user. */
4656 list_for_each_entry(bt, &file_priv->blobs, head_file) {
4668 /* We must drop head_file here, because we may not be the last
4669 * reference on the blob. */
4670 list_del_init(&blob->head_file);
4671 drm_property_unreference_blob_locked(blob);
4672 mutex_unlock(&dev->mode_config.blob_lock);
4677 mutex_unlock(&dev->mode_config.blob_lock);
4682 * drm_mode_connector_set_path_property - set tile property on connector
4683 * @connector: connector to set property on.
4684 * @path: path to use for property; must not be NULL.
4686 * This creates a property to expose to userspace to specify a
4687 * connector path. This is mainly used for DisplayPort MST where
4688 * connectors have a topology and we want to allow userspace to give
4689 * them more meaningful names.
4692 * Zero on success, negative errno on failure.
4694 int drm_mode_connector_set_path_property(struct drm_connector *connector,
4697 struct drm_device *dev = connector->dev;
4700 ret = drm_property_replace_global_blob(dev,
4701 &connector->path_blob_ptr,
4705 dev->mode_config.path_property);
4708 EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4711 * drm_mode_connector_set_tile_property - set tile property on connector
4712 * @connector: connector to set property on.
4714 * This looks up the tile information for a connector, and creates a
4715 * property for userspace to parse if it exists. The property is of
4716 * the form of 8 integers using ':' as a separator.
4719 * Zero on success, errno on failure.
4721 int drm_mode_connector_set_tile_property(struct drm_connector *connector)
4723 struct drm_device *dev = connector->dev;
4727 if (!connector->has_tile) {
4728 ret = drm_property_replace_global_blob(dev,
4729 &connector->tile_blob_ptr,
4733 dev->mode_config.tile_property);
4737 snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4738 connector->tile_group->id, connector->tile_is_single_monitor,
4739 connector->num_h_tile, connector->num_v_tile,
4740 connector->tile_h_loc, connector->tile_v_loc,
4741 connector->tile_h_size, connector->tile_v_size);
4743 ret = drm_property_replace_global_blob(dev,
4744 &connector->tile_blob_ptr,
4748 dev->mode_config.tile_property);
4751 EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
4754 * drm_mode_connector_update_edid_property - update the edid property of a connector
4755 * @connector: drm connector
4756 * @edid: new value of the edid property
4758 * This function creates a new blob modeset object and assigns its id to the
4759 * connector's edid property.
4762 * Zero on success, negative errno on failure.
4764 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4765 const struct edid *edid)
4767 struct drm_device *dev = connector->dev;
4771 /* ignore requests to set edid when overridden */
4772 if (connector->override_edid)
4776 size = EDID_LENGTH * (1 + edid->extensions);
4778 ret = drm_property_replace_global_blob(dev,
4779 &connector->edid_blob_ptr,
4783 dev->mode_config.edid_property);
4786 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4788 /* Some properties could refer to dynamic refcnt'd objects, or things that
4789 * need special locking to handle lifetime issues (ie. to ensure the prop
4790 * value doesn't become invalid part way through the property update due to
4791 * race). The value returned by reference via 'obj' should be passed back
4792 * to drm_property_change_valid_put() after the property is set (and the
4793 * object to which the property is attached has a chance to take it's own
4796 bool drm_property_change_valid_get(struct drm_property *property,
4797 uint64_t value, struct drm_mode_object **ref)
4801 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4806 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
4807 if (value < property->values[0] || value > property->values[1])
4810 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4811 int64_t svalue = U642I64(value);
4813 if (svalue < U642I64(property->values[0]) ||
4814 svalue > U642I64(property->values[1]))
4817 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4818 uint64_t valid_mask = 0;
4820 for (i = 0; i < property->num_values; i++)
4821 valid_mask |= (1ULL << property->values[i]);
4822 return !(value & ~valid_mask);
4823 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
4824 struct drm_property_blob *blob;
4829 blob = drm_property_lookup_blob(property->dev, value);
4836 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4837 /* a zero value for an object property translates to null: */
4841 return _object_find(property->dev, value, property->values[0]) != NULL;
4844 for (i = 0; i < property->num_values; i++)
4845 if (property->values[i] == value)
4850 void drm_property_change_valid_put(struct drm_property *property,
4851 struct drm_mode_object *ref)
4856 if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4857 drm_mode_object_unreference(ref);
4858 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4859 drm_property_unreference_blob(obj_to_blob(ref));
4863 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4866 * @file_priv: DRM file info
4868 * This function sets the current value for a connectors's property. It also
4869 * calls into a driver's ->set_property callback to update the hardware state
4871 * Called by the user via ioctl.
4874 * Zero on success, negative errno on failure.
4876 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4877 void *data, struct drm_file *file_priv)
4879 struct drm_mode_connector_set_property *conn_set_prop = data;
4880 struct drm_mode_obj_set_property obj_set_prop = {
4881 .value = conn_set_prop->value,
4882 .prop_id = conn_set_prop->prop_id,
4883 .obj_id = conn_set_prop->connector_id,
4884 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4887 /* It does all the locking and checking we need */
4888 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
4891 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4892 struct drm_property *property,
4896 struct drm_connector *connector = obj_to_connector(obj);
4898 /* Do DPMS ourselves */
4899 if (property == connector->dev->mode_config.dpms_property) {
4900 ret = (*connector->funcs->dpms)(connector, (int)value);
4901 } else if (connector->funcs->set_property)
4902 ret = connector->funcs->set_property(connector, property, value);
4904 /* store the property value if successful */
4906 drm_object_property_set_value(&connector->base, property, value);
4910 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4911 struct drm_property *property,
4915 struct drm_crtc *crtc = obj_to_crtc(obj);
4917 if (crtc->funcs->set_property)
4918 ret = crtc->funcs->set_property(crtc, property, value);
4920 drm_object_property_set_value(obj, property, value);
4926 * drm_mode_plane_set_obj_prop - set the value of a property
4927 * @plane: drm plane object to set property value for
4928 * @property: property to set
4929 * @value: value the property should be set to
4931 * This functions sets a given property on a given plane object. This function
4932 * calls the driver's ->set_property callback and changes the software state of
4933 * the property if the callback succeeds.
4936 * Zero on success, error code on failure.
4938 int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4939 struct drm_property *property,
4943 struct drm_mode_object *obj = &plane->base;
4945 if (plane->funcs->set_property)
4946 ret = plane->funcs->set_property(plane, property, value);
4948 drm_object_property_set_value(obj, property, value);
4952 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4955 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4958 * @file_priv: DRM file info
4960 * This function retrieves the current value for an object's property. Compared
4961 * to the connector specific ioctl this one is extended to also work on crtc and
4964 * Called by the user via ioctl.
4967 * Zero on success, negative errno on failure.
4969 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4970 struct drm_file *file_priv)
4972 struct drm_mode_obj_get_properties *arg = data;
4973 struct drm_mode_object *obj;
4976 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4979 drm_modeset_lock_all(dev);
4981 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4986 if (!obj->properties) {
4991 ret = get_properties(obj, file_priv->atomic,
4992 (uint32_t __user *)(unsigned long)(arg->props_ptr),
4993 (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
4997 drm_modeset_unlock_all(dev);
5002 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
5005 * @file_priv: DRM file info
5007 * This function sets the current value for an object's property. It also calls
5008 * into a driver's ->set_property callback to update the hardware state.
5009 * Compared to the connector specific ioctl this one is extended to also work on
5010 * crtc and plane objects.
5012 * Called by the user via ioctl.
5015 * Zero on success, negative errno on failure.
5017 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
5018 struct drm_file *file_priv)
5020 struct drm_mode_obj_set_property *arg = data;
5021 struct drm_mode_object *arg_obj;
5022 struct drm_mode_object *prop_obj;
5023 struct drm_property *property;
5024 int i, ret = -EINVAL;
5025 struct drm_mode_object *ref;
5027 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5030 drm_modeset_lock_all(dev);
5032 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
5037 if (!arg_obj->properties)
5040 for (i = 0; i < arg_obj->properties->count; i++)
5041 if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
5044 if (i == arg_obj->properties->count)
5047 prop_obj = drm_mode_object_find(dev, arg->prop_id,
5048 DRM_MODE_OBJECT_PROPERTY);
5053 property = obj_to_property(prop_obj);
5055 if (!drm_property_change_valid_get(property, arg->value, &ref))
5058 switch (arg_obj->type) {
5059 case DRM_MODE_OBJECT_CONNECTOR:
5060 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
5063 case DRM_MODE_OBJECT_CRTC:
5064 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
5066 case DRM_MODE_OBJECT_PLANE:
5067 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
5068 property, arg->value);
5072 drm_property_change_valid_put(property, ref);
5075 drm_modeset_unlock_all(dev);
5080 * drm_mode_connector_attach_encoder - attach a connector to an encoder
5081 * @connector: connector to attach
5082 * @encoder: encoder to attach @connector to
5084 * This function links up a connector to an encoder. Note that the routing
5085 * restrictions between encoders and crtcs are exposed to userspace through the
5086 * possible_clones and possible_crtcs bitmasks.
5089 * Zero on success, negative errno on failure.
5091 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
5092 struct drm_encoder *encoder)
5097 * In the past, drivers have attempted to model the static association
5098 * of connector to encoder in simple connector/encoder devices using a
5099 * direct assignment of connector->encoder = encoder. This connection
5100 * is a logical one and the responsibility of the core, so drivers are
5101 * expected not to mess with this.
5103 * Note that the error return should've been enough here, but a large
5104 * majority of drivers ignores the return value, so add in a big WARN
5105 * to get people's attention.
5107 if (WARN_ON(connector->encoder))
5110 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
5111 if (connector->encoder_ids[i] == 0) {
5112 connector->encoder_ids[i] = encoder->base.id;
5118 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
5121 * drm_mode_crtc_set_gamma_size - set the gamma table size
5122 * @crtc: CRTC to set the gamma table size for
5123 * @gamma_size: size of the gamma table
5125 * Drivers which support gamma tables should set this to the supported gamma
5126 * table size when initializing the CRTC. Currently the drm core only supports a
5127 * fixed gamma table size.
5130 * Zero on success, negative errno on failure.
5132 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
5135 crtc->gamma_size = gamma_size;
5137 crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
5139 if (!crtc->gamma_store) {
5140 crtc->gamma_size = 0;
5146 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
5149 * drm_mode_gamma_set_ioctl - set the gamma table
5152 * @file_priv: DRM file info
5154 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
5155 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
5157 * Called by the user via ioctl.
5160 * Zero on success, negative errno on failure.
5162 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
5163 void *data, struct drm_file *file_priv)
5165 struct drm_mode_crtc_lut *crtc_lut = data;
5166 struct drm_crtc *crtc;
5167 void *r_base, *g_base, *b_base;
5171 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5174 drm_modeset_lock_all(dev);
5175 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5181 if (crtc->funcs->gamma_set == NULL) {
5186 /* memcpy into gamma store */
5187 if (crtc_lut->gamma_size != crtc->gamma_size) {
5192 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5193 r_base = crtc->gamma_store;
5194 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
5199 g_base = r_base + size;
5200 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
5205 b_base = g_base + size;
5206 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
5211 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
5214 drm_modeset_unlock_all(dev);
5220 * drm_mode_gamma_get_ioctl - get the gamma table
5223 * @file_priv: DRM file info
5225 * Copy the current gamma table into the storage provided. This also provides
5226 * the gamma table size the driver expects, which can be used to size the
5227 * allocated storage.
5229 * Called by the user via ioctl.
5232 * Zero on success, negative errno on failure.
5234 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
5235 void *data, struct drm_file *file_priv)
5237 struct drm_mode_crtc_lut *crtc_lut = data;
5238 struct drm_crtc *crtc;
5239 void *r_base, *g_base, *b_base;
5243 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5246 drm_modeset_lock_all(dev);
5247 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5253 /* memcpy into gamma store */
5254 if (crtc_lut->gamma_size != crtc->gamma_size) {
5259 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5260 r_base = crtc->gamma_store;
5261 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
5266 g_base = r_base + size;
5267 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
5272 b_base = g_base + size;
5273 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
5278 drm_modeset_unlock_all(dev);
5283 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
5286 * @file_priv: DRM file info
5288 * This schedules an asynchronous update on a given CRTC, called page flip.
5289 * Optionally a drm event is generated to signal the completion of the event.
5290 * Generic drivers cannot assume that a pageflip with changed framebuffer
5291 * properties (including driver specific metadata like tiling layout) will work,
5292 * but some drivers support e.g. pixel format changes through the pageflip
5295 * Called by the user via ioctl.
5298 * Zero on success, negative errno on failure.
5300 int drm_mode_page_flip_ioctl(struct drm_device *dev,
5301 void *data, struct drm_file *file_priv)
5303 struct drm_mode_crtc_page_flip *page_flip = data;
5304 struct drm_crtc *crtc;
5305 struct drm_framebuffer *fb = NULL;
5306 struct drm_pending_vblank_event *e = NULL;
5309 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
5310 page_flip->reserved != 0)
5313 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
5316 crtc = drm_crtc_find(dev, page_flip->crtc_id);
5320 drm_modeset_lock_crtc(crtc, crtc->primary);
5321 if (crtc->primary->fb == NULL) {
5322 /* The framebuffer is currently unbound, presumably
5323 * due to a hotplug event, that userspace has not
5330 if (crtc->funcs->page_flip == NULL)
5333 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
5340 const struct drm_plane_state *state = crtc->primary->state;
5342 ret = check_src_coords(state->src_x, state->src_y,
5343 state->src_w, state->src_h, fb);
5345 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
5350 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
5351 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
5356 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
5357 e = kzalloc(sizeof *e, GFP_KERNEL);
5362 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
5363 e->event.base.length = sizeof(e->event);
5364 e->event.user_data = page_flip->user_data;
5365 ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base);
5372 crtc->primary->old_fb = crtc->primary->fb;
5373 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
5375 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT)
5376 drm_event_cancel_free(dev, &e->base);
5377 /* Keep the old fb, don't unref it. */
5378 crtc->primary->old_fb = NULL;
5380 crtc->primary->fb = fb;
5381 /* Unref only the old framebuffer. */
5387 drm_framebuffer_unreference(fb);
5388 if (crtc->primary->old_fb)
5389 drm_framebuffer_unreference(crtc->primary->old_fb);
5390 crtc->primary->old_fb = NULL;
5391 drm_modeset_unlock_crtc(crtc);
5397 * drm_mode_config_reset - call ->reset callbacks
5400 * This functions calls all the crtc's, encoder's and connector's ->reset
5401 * callback. Drivers can use this in e.g. their driver load or resume code to
5402 * reset hardware and software state.
5404 void drm_mode_config_reset(struct drm_device *dev)
5406 struct drm_crtc *crtc;
5407 struct drm_plane *plane;
5408 struct drm_encoder *encoder;
5409 struct drm_connector *connector;
5411 drm_for_each_plane(plane, dev)
5412 if (plane->funcs->reset)
5413 plane->funcs->reset(plane);
5415 drm_for_each_crtc(crtc, dev)
5416 if (crtc->funcs->reset)
5417 crtc->funcs->reset(crtc);
5419 drm_for_each_encoder(encoder, dev)
5420 if (encoder->funcs->reset)
5421 encoder->funcs->reset(encoder);
5423 mutex_lock(&dev->mode_config.mutex);
5424 drm_for_each_connector(connector, dev)
5425 if (connector->funcs->reset)
5426 connector->funcs->reset(connector);
5427 mutex_unlock(&dev->mode_config.mutex);
5429 EXPORT_SYMBOL(drm_mode_config_reset);
5432 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5435 * @file_priv: DRM file info
5437 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5438 * TTM or something else entirely) and returns the resulting buffer handle. This
5439 * handle can then be wrapped up into a framebuffer modeset object.
5441 * Note that userspace is not allowed to use such objects for render
5442 * acceleration - drivers must create their own private ioctls for such a use
5445 * Called by the user via ioctl.
5448 * Zero on success, negative errno on failure.
5450 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
5451 void *data, struct drm_file *file_priv)
5453 struct drm_mode_create_dumb *args = data;
5454 u32 cpp, stride, size;
5456 if (!dev->driver->dumb_create)
5458 if (!args->width || !args->height || !args->bpp)
5461 /* overflow checks for 32bit size calculations */
5462 /* NOTE: DIV_ROUND_UP() can overflow */
5463 cpp = DIV_ROUND_UP(args->bpp, 8);
5464 if (!cpp || cpp > 0xffffffffU / args->width)
5466 stride = cpp * args->width;
5467 if (args->height > 0xffffffffU / stride)
5470 /* test for wrap-around */
5471 size = args->height * stride;
5472 if (PAGE_ALIGN(size) == 0)
5476 * handle, pitch and size are output parameters. Zero them out to
5477 * prevent drivers from accidentally using uninitialized data. Since
5478 * not all existing userspace is clearing these fields properly we
5479 * cannot reject IOCTL with garbage in them.
5485 return dev->driver->dumb_create(file_priv, dev, args);
5489 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5492 * @file_priv: DRM file info
5494 * Allocate an offset in the drm device node's address space to be able to
5495 * memory map a dumb buffer.
5497 * Called by the user via ioctl.
5500 * Zero on success, negative errno on failure.
5502 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
5503 void *data, struct drm_file *file_priv)
5505 struct drm_mode_map_dumb *args = data;
5507 /* call driver ioctl to get mmap offset */
5508 if (!dev->driver->dumb_map_offset)
5511 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
5515 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5518 * @file_priv: DRM file info
5520 * This destroys the userspace handle for the given dumb backing storage buffer.
5521 * Since buffer objects must be reference counted in the kernel a buffer object
5522 * won't be immediately freed if a framebuffer modeset object still uses it.
5524 * Called by the user via ioctl.
5527 * Zero on success, negative errno on failure.
5529 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
5530 void *data, struct drm_file *file_priv)
5532 struct drm_mode_destroy_dumb *args = data;
5534 if (!dev->driver->dumb_destroy)
5537 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
5541 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5542 * @format: pixel format (DRM_FORMAT_*)
5543 * @depth: storage for the depth value
5544 * @bpp: storage for the bpp value
5546 * This only supports RGB formats here for compat with code that doesn't use
5547 * pixel formats directly yet.
5549 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
5554 case DRM_FORMAT_RGB332:
5555 case DRM_FORMAT_BGR233:
5559 case DRM_FORMAT_XRGB1555:
5560 case DRM_FORMAT_XBGR1555:
5561 case DRM_FORMAT_RGBX5551:
5562 case DRM_FORMAT_BGRX5551:
5563 case DRM_FORMAT_ARGB1555:
5564 case DRM_FORMAT_ABGR1555:
5565 case DRM_FORMAT_RGBA5551:
5566 case DRM_FORMAT_BGRA5551:
5570 case DRM_FORMAT_RGB565:
5571 case DRM_FORMAT_BGR565:
5575 case DRM_FORMAT_RGB888:
5576 case DRM_FORMAT_BGR888:
5580 case DRM_FORMAT_XRGB8888:
5581 case DRM_FORMAT_XBGR8888:
5582 case DRM_FORMAT_RGBX8888:
5583 case DRM_FORMAT_BGRX8888:
5587 case DRM_FORMAT_XRGB2101010:
5588 case DRM_FORMAT_XBGR2101010:
5589 case DRM_FORMAT_RGBX1010102:
5590 case DRM_FORMAT_BGRX1010102:
5591 case DRM_FORMAT_ARGB2101010:
5592 case DRM_FORMAT_ABGR2101010:
5593 case DRM_FORMAT_RGBA1010102:
5594 case DRM_FORMAT_BGRA1010102:
5598 case DRM_FORMAT_ARGB8888:
5599 case DRM_FORMAT_ABGR8888:
5600 case DRM_FORMAT_RGBA8888:
5601 case DRM_FORMAT_BGRA8888:
5606 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5607 drm_get_format_name(format));
5613 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
5616 * drm_format_num_planes - get the number of planes for format
5617 * @format: pixel format (DRM_FORMAT_*)
5620 * The number of planes used by the specified pixel format.
5622 int drm_format_num_planes(uint32_t format)
5625 case DRM_FORMAT_YUV410:
5626 case DRM_FORMAT_YVU410:
5627 case DRM_FORMAT_YUV411:
5628 case DRM_FORMAT_YVU411:
5629 case DRM_FORMAT_YUV420:
5630 case DRM_FORMAT_YVU420:
5631 case DRM_FORMAT_YUV422:
5632 case DRM_FORMAT_YVU422:
5633 case DRM_FORMAT_YUV444:
5634 case DRM_FORMAT_YVU444:
5636 case DRM_FORMAT_NV12:
5637 case DRM_FORMAT_NV21:
5638 case DRM_FORMAT_NV16:
5639 case DRM_FORMAT_NV61:
5640 case DRM_FORMAT_NV24:
5641 case DRM_FORMAT_NV42:
5647 EXPORT_SYMBOL(drm_format_num_planes);
5650 * drm_format_plane_cpp - determine the bytes per pixel value
5651 * @format: pixel format (DRM_FORMAT_*)
5652 * @plane: plane index
5655 * The bytes per pixel value for the specified plane.
5657 int drm_format_plane_cpp(uint32_t format, int plane)
5662 if (plane >= drm_format_num_planes(format))
5666 case DRM_FORMAT_YUYV:
5667 case DRM_FORMAT_YVYU:
5668 case DRM_FORMAT_UYVY:
5669 case DRM_FORMAT_VYUY:
5671 case DRM_FORMAT_NV12:
5672 case DRM_FORMAT_NV21:
5673 case DRM_FORMAT_NV16:
5674 case DRM_FORMAT_NV61:
5675 case DRM_FORMAT_NV24:
5676 case DRM_FORMAT_NV42:
5677 return plane ? 2 : 1;
5678 case DRM_FORMAT_YUV410:
5679 case DRM_FORMAT_YVU410:
5680 case DRM_FORMAT_YUV411:
5681 case DRM_FORMAT_YVU411:
5682 case DRM_FORMAT_YUV420:
5683 case DRM_FORMAT_YVU420:
5684 case DRM_FORMAT_YUV422:
5685 case DRM_FORMAT_YVU422:
5686 case DRM_FORMAT_YUV444:
5687 case DRM_FORMAT_YVU444:
5690 drm_fb_get_bpp_depth(format, &depth, &bpp);
5694 EXPORT_SYMBOL(drm_format_plane_cpp);
5697 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5698 * @format: pixel format (DRM_FORMAT_*)
5701 * The horizontal chroma subsampling factor for the
5702 * specified pixel format.
5704 int drm_format_horz_chroma_subsampling(uint32_t format)
5707 case DRM_FORMAT_YUV411:
5708 case DRM_FORMAT_YVU411:
5709 case DRM_FORMAT_YUV410:
5710 case DRM_FORMAT_YVU410:
5712 case DRM_FORMAT_YUYV:
5713 case DRM_FORMAT_YVYU:
5714 case DRM_FORMAT_UYVY:
5715 case DRM_FORMAT_VYUY:
5716 case DRM_FORMAT_NV12:
5717 case DRM_FORMAT_NV21:
5718 case DRM_FORMAT_NV16:
5719 case DRM_FORMAT_NV61:
5720 case DRM_FORMAT_YUV422:
5721 case DRM_FORMAT_YVU422:
5722 case DRM_FORMAT_YUV420:
5723 case DRM_FORMAT_YVU420:
5729 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5732 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5733 * @format: pixel format (DRM_FORMAT_*)
5736 * The vertical chroma subsampling factor for the
5737 * specified pixel format.
5739 int drm_format_vert_chroma_subsampling(uint32_t format)
5742 case DRM_FORMAT_YUV410:
5743 case DRM_FORMAT_YVU410:
5745 case DRM_FORMAT_YUV420:
5746 case DRM_FORMAT_YVU420:
5747 case DRM_FORMAT_NV12:
5748 case DRM_FORMAT_NV21:
5754 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
5757 * drm_format_plane_width - width of the plane given the first plane
5758 * @width: width of the first plane
5759 * @format: pixel format
5760 * @plane: plane index
5763 * The width of @plane, given that the width of the first plane is @width.
5765 int drm_format_plane_width(int width, uint32_t format, int plane)
5767 if (plane >= drm_format_num_planes(format))
5773 return width / drm_format_horz_chroma_subsampling(format);
5775 EXPORT_SYMBOL(drm_format_plane_width);
5778 * drm_format_plane_height - height of the plane given the first plane
5779 * @height: height of the first plane
5780 * @format: pixel format
5781 * @plane: plane index
5784 * The height of @plane, given that the height of the first plane is @height.
5786 int drm_format_plane_height(int height, uint32_t format, int plane)
5788 if (plane >= drm_format_num_planes(format))
5794 return height / drm_format_vert_chroma_subsampling(format);
5796 EXPORT_SYMBOL(drm_format_plane_height);
5799 * drm_rotation_simplify() - Try to simplify the rotation
5800 * @rotation: Rotation to be simplified
5801 * @supported_rotations: Supported rotations
5803 * Attempt to simplify the rotation to a form that is supported.
5804 * Eg. if the hardware supports everything except DRM_REFLECT_X
5805 * one could call this function like this:
5807 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5808 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5809 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5811 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5812 * transforms the hardware supports, this function may not
5813 * be able to produce a supported transform, so the caller should
5814 * check the result afterwards.
5816 unsigned int drm_rotation_simplify(unsigned int rotation,
5817 unsigned int supported_rotations)
5819 if (rotation & ~supported_rotations) {
5820 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5821 rotation = (rotation & DRM_REFLECT_MASK) |
5822 BIT((ffs(rotation & DRM_ROTATE_MASK) + 1) % 4);
5827 EXPORT_SYMBOL(drm_rotation_simplify);
5830 * drm_mode_config_init - initialize DRM mode_configuration structure
5833 * Initialize @dev's mode_config structure, used for tracking the graphics
5834 * configuration of @dev.
5836 * Since this initializes the modeset locks, no locking is possible. Which is no
5837 * problem, since this should happen single threaded at init time. It is the
5838 * driver's problem to ensure this guarantee.
5841 void drm_mode_config_init(struct drm_device *dev)
5843 mutex_init(&dev->mode_config.mutex);
5844 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
5845 mutex_init(&dev->mode_config.idr_mutex);
5846 mutex_init(&dev->mode_config.fb_lock);
5847 mutex_init(&dev->mode_config.blob_lock);
5848 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5849 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5850 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5851 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5852 INIT_LIST_HEAD(&dev->mode_config.property_list);
5853 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5854 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5855 idr_init(&dev->mode_config.crtc_idr);
5856 idr_init(&dev->mode_config.tile_idr);
5857 ida_init(&dev->mode_config.connector_ida);
5859 drm_modeset_lock_all(dev);
5860 drm_mode_create_standard_properties(dev);
5861 drm_modeset_unlock_all(dev);
5863 /* Just to be sure */
5864 dev->mode_config.num_fb = 0;
5865 dev->mode_config.num_connector = 0;
5866 dev->mode_config.num_crtc = 0;
5867 dev->mode_config.num_encoder = 0;
5868 dev->mode_config.num_overlay_plane = 0;
5869 dev->mode_config.num_total_plane = 0;
5871 EXPORT_SYMBOL(drm_mode_config_init);
5874 * drm_mode_config_cleanup - free up DRM mode_config info
5877 * Free up all the connectors and CRTCs associated with this DRM device, then
5878 * free up the framebuffers and associated buffer objects.
5880 * Note that since this /should/ happen single-threaded at driver/device
5881 * teardown time, no locking is required. It's the driver's job to ensure that
5882 * this guarantee actually holds true.
5884 * FIXME: cleanup any dangling user buffer objects too
5886 void drm_mode_config_cleanup(struct drm_device *dev)
5888 struct drm_connector *connector, *ot;
5889 struct drm_crtc *crtc, *ct;
5890 struct drm_encoder *encoder, *enct;
5891 struct drm_framebuffer *fb, *fbt;
5892 struct drm_property *property, *pt;
5893 struct drm_property_blob *blob, *bt;
5894 struct drm_plane *plane, *plt;
5896 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5898 encoder->funcs->destroy(encoder);
5901 list_for_each_entry_safe(connector, ot,
5902 &dev->mode_config.connector_list, head) {
5903 connector->funcs->destroy(connector);
5906 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5908 drm_property_destroy(dev, property);
5911 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5913 plane->funcs->destroy(plane);
5916 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5917 crtc->funcs->destroy(crtc);
5920 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5922 drm_property_unreference_blob(blob);
5926 * Single-threaded teardown context, so it's not required to grab the
5927 * fb_lock to protect against concurrent fb_list access. Contrary, it
5928 * would actually deadlock with the drm_framebuffer_cleanup function.
5930 * Also, if there are any framebuffers left, that's a driver leak now,
5931 * so politely WARN about this.
5933 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5934 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5935 drm_framebuffer_free(&fb->base.refcount);
5938 ida_destroy(&dev->mode_config.connector_ida);
5939 idr_destroy(&dev->mode_config.tile_idr);
5940 idr_destroy(&dev->mode_config.crtc_idr);
5941 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
5943 EXPORT_SYMBOL(drm_mode_config_cleanup);
5945 struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5946 unsigned int supported_rotations)
5948 static const struct drm_prop_enum_list props[] = {
5949 { DRM_ROTATE_0, "rotate-0" },
5950 { DRM_ROTATE_90, "rotate-90" },
5951 { DRM_ROTATE_180, "rotate-180" },
5952 { DRM_ROTATE_270, "rotate-270" },
5953 { DRM_REFLECT_X, "reflect-x" },
5954 { DRM_REFLECT_Y, "reflect-y" },
5957 return drm_property_create_bitmask(dev, 0, "rotation",
5958 props, ARRAY_SIZE(props),
5959 supported_rotations);
5961 EXPORT_SYMBOL(drm_mode_create_rotation_property);
5966 * Tile groups are used to represent tiled monitors with a unique
5967 * integer identifier. Tiled monitors using DisplayID v1.3 have
5968 * a unique 8-byte handle, we store this in a tile group, so we
5969 * have a common identifier for all tiles in a monitor group.
5971 static void drm_tile_group_free(struct kref *kref)
5973 struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
5974 struct drm_device *dev = tg->dev;
5975 mutex_lock(&dev->mode_config.idr_mutex);
5976 idr_remove(&dev->mode_config.tile_idr, tg->id);
5977 mutex_unlock(&dev->mode_config.idr_mutex);
5982 * drm_mode_put_tile_group - drop a reference to a tile group.
5984 * @tg: tile group to drop reference to.
5986 * drop reference to tile group and free if 0.
5988 void drm_mode_put_tile_group(struct drm_device *dev,
5989 struct drm_tile_group *tg)
5991 kref_put(&tg->refcount, drm_tile_group_free);
5995 * drm_mode_get_tile_group - get a reference to an existing tile group
5997 * @topology: 8-bytes unique per monitor.
5999 * Use the unique bytes to get a reference to an existing tile group.
6002 * tile group or NULL if not found.
6004 struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
6007 struct drm_tile_group *tg;
6009 mutex_lock(&dev->mode_config.idr_mutex);
6010 idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
6011 if (!memcmp(tg->group_data, topology, 8)) {
6012 if (!kref_get_unless_zero(&tg->refcount))
6014 mutex_unlock(&dev->mode_config.idr_mutex);
6018 mutex_unlock(&dev->mode_config.idr_mutex);
6021 EXPORT_SYMBOL(drm_mode_get_tile_group);
6024 * drm_mode_create_tile_group - create a tile group from a displayid description
6026 * @topology: 8-bytes unique per monitor.
6028 * Create a tile group for the unique monitor, and get a unique
6029 * identifier for the tile group.
6032 * new tile group or error.
6034 struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
6037 struct drm_tile_group *tg;
6040 tg = kzalloc(sizeof(*tg), GFP_KERNEL);
6042 return ERR_PTR(-ENOMEM);
6044 kref_init(&tg->refcount);
6045 memcpy(tg->group_data, topology, 8);
6048 mutex_lock(&dev->mode_config.idr_mutex);
6049 ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
6057 mutex_unlock(&dev->mode_config.idr_mutex);
6060 EXPORT_SYMBOL(drm_mode_create_tile_group);