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 struct drm_mode_fb_cmd2 *r,
49 struct drm_file *file_priv);
51 /* Avoid boilerplate. I'm tired of typing. */
52 #define DRM_ENUM_NAME_FN(fnname, list) \
53 const char *fnname(int val) \
56 for (i = 0; i < ARRAY_SIZE(list); i++) { \
57 if (list[i].type == val) \
58 return list[i].name; \
66 static const struct drm_prop_enum_list drm_dpms_enum_list[] = {
67 { DRM_MODE_DPMS_ON, "On" },
68 { DRM_MODE_DPMS_STANDBY, "Standby" },
69 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
70 { DRM_MODE_DPMS_OFF, "Off" }
73 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
75 static const struct drm_prop_enum_list drm_plane_type_enum_list[] = {
76 { DRM_PLANE_TYPE_OVERLAY, "Overlay" },
77 { DRM_PLANE_TYPE_PRIMARY, "Primary" },
78 { DRM_PLANE_TYPE_CURSOR, "Cursor" },
84 static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] = {
85 { DRM_MODE_SCALE_NONE, "None" },
86 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
87 { DRM_MODE_SCALE_CENTER, "Center" },
88 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
91 static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = {
92 { DRM_MODE_PICTURE_ASPECT_NONE, "Automatic" },
93 { DRM_MODE_PICTURE_ASPECT_4_3, "4:3" },
94 { DRM_MODE_PICTURE_ASPECT_16_9, "16:9" },
98 * Non-global properties, but "required" for certain connectors.
100 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = {
101 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
102 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
103 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
106 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
108 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = {
109 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
110 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
111 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
114 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
115 drm_dvi_i_subconnector_enum_list)
117 static const struct drm_prop_enum_list drm_tv_select_enum_list[] = {
118 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
119 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
120 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
121 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
122 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
125 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
127 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = {
128 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
129 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
130 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
131 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
132 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
135 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
136 drm_tv_subconnector_enum_list)
138 static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
139 { DRM_MODE_DIRTY_OFF, "Off" },
140 { DRM_MODE_DIRTY_ON, "On" },
141 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
144 struct drm_conn_prop_enum_list {
151 * Connector and encoder types.
153 static struct drm_conn_prop_enum_list drm_connector_enum_list[] = {
154 { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
155 { DRM_MODE_CONNECTOR_VGA, "VGA" },
156 { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
157 { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
158 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
159 { DRM_MODE_CONNECTOR_Composite, "Composite" },
160 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
161 { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
162 { DRM_MODE_CONNECTOR_Component, "Component" },
163 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
164 { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
165 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
166 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
167 { DRM_MODE_CONNECTOR_TV, "TV" },
168 { DRM_MODE_CONNECTOR_eDP, "eDP" },
169 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
170 { DRM_MODE_CONNECTOR_DSI, "DSI" },
173 static const struct drm_prop_enum_list drm_encoder_enum_list[] = {
174 { DRM_MODE_ENCODER_NONE, "None" },
175 { DRM_MODE_ENCODER_DAC, "DAC" },
176 { DRM_MODE_ENCODER_TMDS, "TMDS" },
177 { DRM_MODE_ENCODER_LVDS, "LVDS" },
178 { DRM_MODE_ENCODER_TVDAC, "TV" },
179 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
180 { DRM_MODE_ENCODER_DSI, "DSI" },
181 { DRM_MODE_ENCODER_DPMST, "DP MST" },
184 static const struct drm_prop_enum_list drm_subpixel_enum_list[] = {
185 { SubPixelUnknown, "Unknown" },
186 { SubPixelHorizontalRGB, "Horizontal RGB" },
187 { SubPixelHorizontalBGR, "Horizontal BGR" },
188 { SubPixelVerticalRGB, "Vertical RGB" },
189 { SubPixelVerticalBGR, "Vertical BGR" },
190 { SubPixelNone, "None" },
193 void drm_connector_ida_init(void)
197 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
198 ida_init(&drm_connector_enum_list[i].ida);
201 void drm_connector_ida_destroy(void)
205 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
206 ida_destroy(&drm_connector_enum_list[i].ida);
210 * drm_get_connector_status_name - return a string for connector status
211 * @status: connector status to compute name of
213 * In contrast to the other drm_get_*_name functions this one here returns a
214 * const pointer and hence is threadsafe.
216 const char *drm_get_connector_status_name(enum drm_connector_status status)
218 if (status == connector_status_connected)
220 else if (status == connector_status_disconnected)
221 return "disconnected";
225 EXPORT_SYMBOL(drm_get_connector_status_name);
228 * drm_get_subpixel_order_name - return a string for a given subpixel enum
229 * @order: enum of subpixel_order
231 * Note you could abuse this and return something out of bounds, but that
232 * would be a caller error. No unscrubbed user data should make it here.
234 const char *drm_get_subpixel_order_name(enum subpixel_order order)
236 return drm_subpixel_enum_list[order].name;
238 EXPORT_SYMBOL(drm_get_subpixel_order_name);
240 static char printable_char(int c)
242 return isascii(c) && isprint(c) ? c : '?';
246 * drm_get_format_name - return a string for drm fourcc format
247 * @format: format to compute name of
249 * Note that the buffer used by this function is globally shared and owned by
250 * the function itself.
252 * FIXME: This isn't really multithreading safe.
254 const char *drm_get_format_name(uint32_t format)
258 snprintf(buf, sizeof(buf),
259 "%c%c%c%c %s-endian (0x%08x)",
260 printable_char(format & 0xff),
261 printable_char((format >> 8) & 0xff),
262 printable_char((format >> 16) & 0xff),
263 printable_char((format >> 24) & 0x7f),
264 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
269 EXPORT_SYMBOL(drm_get_format_name);
272 * Internal function to assign a slot in the object idr and optionally
273 * register the object into the idr.
275 static int drm_mode_object_get_reg(struct drm_device *dev,
276 struct drm_mode_object *obj,
282 mutex_lock(&dev->mode_config.idr_mutex);
283 ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
286 * Set up the object linking under the protection of the idr
287 * lock so that other users can't see inconsistent state.
290 obj->type = obj_type;
292 mutex_unlock(&dev->mode_config.idr_mutex);
294 return ret < 0 ? ret : 0;
298 * drm_mode_object_get - allocate a new modeset identifier
300 * @obj: object pointer, used to generate unique ID
301 * @obj_type: object type
303 * Create a unique identifier based on @ptr in @dev's identifier space. Used
304 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
305 * modeset identifiers are _not_ reference counted. Hence don't use this for
306 * reference counted modeset objects like framebuffers.
309 * Zero on success, error code on failure.
311 int drm_mode_object_get(struct drm_device *dev,
312 struct drm_mode_object *obj, uint32_t obj_type)
314 return drm_mode_object_get_reg(dev, obj, obj_type, true);
317 static void drm_mode_object_register(struct drm_device *dev,
318 struct drm_mode_object *obj)
320 mutex_lock(&dev->mode_config.idr_mutex);
321 idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
322 mutex_unlock(&dev->mode_config.idr_mutex);
326 * drm_mode_object_put - free a modeset identifer
328 * @object: object to free
330 * Free @id from @dev's unique identifier pool. Note that despite the _get
331 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
332 * for reference counted modeset objects like framebuffers.
334 void drm_mode_object_put(struct drm_device *dev,
335 struct drm_mode_object *object)
337 mutex_lock(&dev->mode_config.idr_mutex);
338 idr_remove(&dev->mode_config.crtc_idr, object->id);
339 mutex_unlock(&dev->mode_config.idr_mutex);
342 static struct drm_mode_object *_object_find(struct drm_device *dev,
343 uint32_t id, uint32_t type)
345 struct drm_mode_object *obj = NULL;
347 mutex_lock(&dev->mode_config.idr_mutex);
348 obj = idr_find(&dev->mode_config.crtc_idr, id);
349 if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
351 if (obj && obj->id != id)
353 /* don't leak out unref'd fb's */
355 (obj->type == DRM_MODE_OBJECT_FB ||
356 obj->type == DRM_MODE_OBJECT_BLOB))
358 mutex_unlock(&dev->mode_config.idr_mutex);
364 * drm_mode_object_find - look up a drm object with static lifetime
366 * @id: id of the mode object
367 * @type: type of the mode object
369 * Note that framebuffers cannot be looked up with this functions - since those
370 * are reference counted, they need special treatment. Even with
371 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
372 * rather than WARN_ON()).
374 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
375 uint32_t id, uint32_t type)
377 struct drm_mode_object *obj = NULL;
379 /* Framebuffers are reference counted and need their own lookup
381 WARN_ON(type == DRM_MODE_OBJECT_FB || type == DRM_MODE_OBJECT_BLOB);
382 obj = _object_find(dev, id, type);
385 EXPORT_SYMBOL(drm_mode_object_find);
388 * drm_framebuffer_init - initialize a framebuffer
390 * @fb: framebuffer to be initialized
391 * @funcs: ... with these functions
393 * Allocates an ID for the framebuffer's parent mode object, sets its mode
394 * functions & device file and adds it to the master fd list.
397 * This functions publishes the fb and makes it available for concurrent access
398 * by other users. Which means by this point the fb _must_ be fully set up -
399 * since all the fb attributes are invariant over its lifetime, no further
400 * locking but only correct reference counting is required.
403 * Zero on success, error code on failure.
405 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
406 const struct drm_framebuffer_funcs *funcs)
410 mutex_lock(&dev->mode_config.fb_lock);
411 kref_init(&fb->refcount);
412 INIT_LIST_HEAD(&fb->filp_head);
416 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
420 dev->mode_config.num_fb++;
421 list_add(&fb->head, &dev->mode_config.fb_list);
423 mutex_unlock(&dev->mode_config.fb_lock);
427 EXPORT_SYMBOL(drm_framebuffer_init);
429 /* dev->mode_config.fb_lock must be held! */
430 static void __drm_framebuffer_unregister(struct drm_device *dev,
431 struct drm_framebuffer *fb)
433 mutex_lock(&dev->mode_config.idr_mutex);
434 idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
435 mutex_unlock(&dev->mode_config.idr_mutex);
440 static void drm_framebuffer_free(struct kref *kref)
442 struct drm_framebuffer *fb =
443 container_of(kref, struct drm_framebuffer, refcount);
444 struct drm_device *dev = fb->dev;
447 * The lookup idr holds a weak reference, which has not necessarily been
448 * removed at this point. Check for that.
450 mutex_lock(&dev->mode_config.fb_lock);
452 /* Mark fb as reaped and drop idr ref. */
453 __drm_framebuffer_unregister(dev, fb);
455 mutex_unlock(&dev->mode_config.fb_lock);
457 fb->funcs->destroy(fb);
460 static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
463 struct drm_mode_object *obj = NULL;
464 struct drm_framebuffer *fb;
466 mutex_lock(&dev->mode_config.idr_mutex);
467 obj = idr_find(&dev->mode_config.crtc_idr, id);
468 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
472 mutex_unlock(&dev->mode_config.idr_mutex);
478 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
480 * @id: id of the fb object
482 * If successful, this grabs an additional reference to the framebuffer -
483 * callers need to make sure to eventually unreference the returned framebuffer
484 * again, using @drm_framebuffer_unreference.
486 struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
489 struct drm_framebuffer *fb;
491 mutex_lock(&dev->mode_config.fb_lock);
492 fb = __drm_framebuffer_lookup(dev, id);
494 if (!kref_get_unless_zero(&fb->refcount))
497 mutex_unlock(&dev->mode_config.fb_lock);
501 EXPORT_SYMBOL(drm_framebuffer_lookup);
504 * drm_framebuffer_unreference - unref a framebuffer
505 * @fb: framebuffer to unref
507 * This functions decrements the fb's refcount and frees it if it drops to zero.
509 void drm_framebuffer_unreference(struct drm_framebuffer *fb)
511 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
512 kref_put(&fb->refcount, drm_framebuffer_free);
514 EXPORT_SYMBOL(drm_framebuffer_unreference);
517 * drm_framebuffer_reference - incr the fb refcnt
520 * This functions increments the fb's refcount.
522 void drm_framebuffer_reference(struct drm_framebuffer *fb)
524 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
525 kref_get(&fb->refcount);
527 EXPORT_SYMBOL(drm_framebuffer_reference);
530 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
531 * @fb: fb to unregister
533 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
534 * those used for fbdev. Note that the caller must hold a reference of it's own,
535 * i.e. the object may not be destroyed through this call (since it'll lead to a
536 * locking inversion).
538 void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
540 struct drm_device *dev;
547 mutex_lock(&dev->mode_config.fb_lock);
548 /* Mark fb as reaped and drop idr ref. */
549 __drm_framebuffer_unregister(dev, fb);
550 mutex_unlock(&dev->mode_config.fb_lock);
552 EXPORT_SYMBOL(drm_framebuffer_unregister_private);
555 * drm_framebuffer_cleanup - remove a framebuffer object
556 * @fb: framebuffer to remove
558 * Cleanup framebuffer. This function is intended to be used from the drivers
559 * ->destroy callback. It can also be used to clean up driver private
560 * framebuffers embedded into a larger structure.
562 * Note that this function does not remove the fb from active usuage - if it is
563 * still used anywhere, hilarity can ensue since userspace could call getfb on
564 * the id and get back -EINVAL. Obviously no concern at driver unload time.
566 * Also, the framebuffer will not be removed from the lookup idr - for
567 * user-created framebuffers this will happen in in the rmfb ioctl. For
568 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
569 * drm_framebuffer_unregister_private.
571 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
573 struct drm_device *dev = fb->dev;
575 mutex_lock(&dev->mode_config.fb_lock);
577 dev->mode_config.num_fb--;
578 mutex_unlock(&dev->mode_config.fb_lock);
580 EXPORT_SYMBOL(drm_framebuffer_cleanup);
583 * drm_framebuffer_remove - remove and unreference a framebuffer object
584 * @fb: framebuffer to remove
586 * Scans all the CRTCs and planes in @dev's mode_config. If they're
587 * using @fb, removes it, setting it to NULL. Then drops the reference to the
588 * passed-in framebuffer. Might take the modeset locks.
590 * Note that this function optimizes the cleanup away if the caller holds the
591 * last reference to the framebuffer. It is also guaranteed to not take the
592 * modeset locks in this case.
594 void drm_framebuffer_remove(struct drm_framebuffer *fb)
596 struct drm_device *dev;
597 struct drm_crtc *crtc;
598 struct drm_plane *plane;
599 struct drm_mode_set set;
607 WARN_ON(!list_empty(&fb->filp_head));
610 * drm ABI mandates that we remove any deleted framebuffers from active
611 * useage. But since most sane clients only remove framebuffers they no
612 * longer need, try to optimize this away.
614 * Since we're holding a reference ourselves, observing a refcount of 1
615 * means that we're the last holder and can skip it. Also, the refcount
616 * can never increase from 1 again, so we don't need any barriers or
619 * Note that userspace could try to race with use and instate a new
620 * usage _after_ we've cleared all current ones. End result will be an
621 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
624 if (atomic_read(&fb->refcount.refcount) > 1) {
625 drm_modeset_lock_all(dev);
626 /* remove from any CRTC */
627 drm_for_each_crtc(crtc, dev) {
628 if (crtc->primary->fb == fb) {
629 /* should turn off the crtc */
630 memset(&set, 0, sizeof(struct drm_mode_set));
633 ret = drm_mode_set_config_internal(&set);
635 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
639 drm_for_each_plane(plane, dev) {
641 drm_plane_force_disable(plane);
643 drm_modeset_unlock_all(dev);
646 drm_framebuffer_unreference(fb);
648 EXPORT_SYMBOL(drm_framebuffer_remove);
650 DEFINE_WW_CLASS(crtc_ww_class);
653 * drm_crtc_init_with_planes - Initialise a new CRTC object with
654 * specified primary and cursor planes.
656 * @crtc: CRTC object to init
657 * @primary: Primary plane for CRTC
658 * @cursor: Cursor plane for CRTC
659 * @funcs: callbacks for the new CRTC
661 * Inits a new object created as base part of a driver crtc object.
664 * Zero on success, error code on failure.
666 int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
667 struct drm_plane *primary,
668 struct drm_plane *cursor,
669 const struct drm_crtc_funcs *funcs)
671 struct drm_mode_config *config = &dev->mode_config;
674 WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY);
675 WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR);
680 drm_modeset_lock_init(&crtc->mutex);
681 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
685 crtc->base.properties = &crtc->properties;
687 list_add_tail(&crtc->head, &config->crtc_list);
690 crtc->primary = primary;
691 crtc->cursor = cursor;
693 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
695 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
697 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
698 drm_object_attach_property(&crtc->base, config->prop_active, 0);
699 drm_object_attach_property(&crtc->base, config->prop_mode_id, 0);
704 EXPORT_SYMBOL(drm_crtc_init_with_planes);
707 * drm_crtc_cleanup - Clean up the core crtc usage
708 * @crtc: CRTC to cleanup
710 * This function cleans up @crtc and removes it from the DRM mode setting
711 * core. Note that the function does *not* free the crtc structure itself,
712 * this is the responsibility of the caller.
714 void drm_crtc_cleanup(struct drm_crtc *crtc)
716 struct drm_device *dev = crtc->dev;
718 kfree(crtc->gamma_store);
719 crtc->gamma_store = NULL;
721 drm_modeset_lock_fini(&crtc->mutex);
723 drm_mode_object_put(dev, &crtc->base);
724 list_del(&crtc->head);
725 dev->mode_config.num_crtc--;
727 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
728 if (crtc->state && crtc->funcs->atomic_destroy_state)
729 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
731 memset(crtc, 0, sizeof(*crtc));
733 EXPORT_SYMBOL(drm_crtc_cleanup);
736 * drm_crtc_index - find the index of a registered CRTC
737 * @crtc: CRTC to find index for
739 * Given a registered CRTC, return the index of that CRTC within a DRM
740 * device's list of CRTCs.
742 unsigned int drm_crtc_index(struct drm_crtc *crtc)
744 unsigned int index = 0;
745 struct drm_crtc *tmp;
747 drm_for_each_crtc(tmp, crtc->dev) {
756 EXPORT_SYMBOL(drm_crtc_index);
759 * drm_mode_remove - remove and free a mode
760 * @connector: connector list to modify
761 * @mode: mode to remove
763 * Remove @mode from @connector's mode list, then free it.
765 static void drm_mode_remove(struct drm_connector *connector,
766 struct drm_display_mode *mode)
768 list_del(&mode->head);
769 drm_mode_destroy(connector->dev, mode);
773 * drm_display_info_set_bus_formats - set the supported bus formats
774 * @info: display info to store bus formats in
775 * @formats: array containing the supported bus formats
776 * @num_formats: the number of entries in the fmts array
778 * Store the supported bus formats in display info structure.
779 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
780 * a full list of available formats.
782 int drm_display_info_set_bus_formats(struct drm_display_info *info,
784 unsigned int num_formats)
788 if (!formats && num_formats)
791 if (formats && num_formats) {
792 fmts = kmemdup(formats, sizeof(*formats) * num_formats,
798 kfree(info->bus_formats);
799 info->bus_formats = fmts;
800 info->num_bus_formats = num_formats;
804 EXPORT_SYMBOL(drm_display_info_set_bus_formats);
807 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
808 * @connector: connector to quwery
810 * The kernel supports per-connector configration of its consoles through
811 * use of the video= parameter. This function parses that option and
812 * extracts the user's specified mode (or enable/disable status) for a
813 * particular connector. This is typically only used during the early fbdev
816 static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
818 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
821 if (fb_get_options(connector->name, &option))
824 if (!drm_mode_parse_command_line_for_connector(option,
832 switch (mode->force) {
836 case DRM_FORCE_ON_DIGITAL:
845 DRM_INFO("forcing %s connector %s\n", connector->name, s);
846 connector->force = mode->force;
849 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
851 mode->xres, mode->yres,
852 mode->refresh_specified ? mode->refresh : 60,
853 mode->rb ? " reduced blanking" : "",
854 mode->margins ? " with margins" : "",
855 mode->interlace ? " interlaced" : "");
859 * drm_connector_init - Init a preallocated connector
861 * @connector: the connector to init
862 * @funcs: callbacks for this connector
863 * @connector_type: user visible type of the connector
865 * Initialises a preallocated connector. Connectors should be
866 * subclassed as part of driver connector objects.
869 * Zero on success, error code on failure.
871 int drm_connector_init(struct drm_device *dev,
872 struct drm_connector *connector,
873 const struct drm_connector_funcs *funcs,
876 struct drm_mode_config *config = &dev->mode_config;
878 struct ida *connector_ida =
879 &drm_connector_enum_list[connector_type].ida;
881 drm_modeset_lock_all(dev);
883 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false);
887 connector->base.properties = &connector->properties;
888 connector->dev = dev;
889 connector->funcs = funcs;
890 connector->connector_type = connector_type;
891 connector->connector_type_id =
892 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
893 if (connector->connector_type_id < 0) {
894 ret = connector->connector_type_id;
898 kasprintf(GFP_KERNEL, "%s-%d",
899 drm_connector_enum_list[connector_type].name,
900 connector->connector_type_id);
901 if (!connector->name) {
906 INIT_LIST_HEAD(&connector->probed_modes);
907 INIT_LIST_HEAD(&connector->modes);
908 connector->edid_blob_ptr = NULL;
909 connector->status = connector_status_unknown;
911 drm_connector_get_cmdline_mode(connector);
913 /* We should add connectors at the end to avoid upsetting the connector
915 list_add_tail(&connector->head, &config->connector_list);
916 config->num_connector++;
918 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
919 drm_object_attach_property(&connector->base,
920 config->edid_property,
923 drm_object_attach_property(&connector->base,
924 config->dpms_property, 0);
926 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
927 drm_object_attach_property(&connector->base, config->prop_crtc_id, 0);
930 connector->debugfs_entry = NULL;
934 drm_mode_object_put(dev, &connector->base);
937 drm_modeset_unlock_all(dev);
941 EXPORT_SYMBOL(drm_connector_init);
944 * drm_connector_cleanup - cleans up an initialised connector
945 * @connector: connector to cleanup
947 * Cleans up the connector but doesn't free the object.
949 void drm_connector_cleanup(struct drm_connector *connector)
951 struct drm_device *dev = connector->dev;
952 struct drm_display_mode *mode, *t;
954 if (connector->tile_group) {
955 drm_mode_put_tile_group(dev, connector->tile_group);
956 connector->tile_group = NULL;
959 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
960 drm_mode_remove(connector, mode);
962 list_for_each_entry_safe(mode, t, &connector->modes, head)
963 drm_mode_remove(connector, mode);
965 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
966 connector->connector_type_id);
968 kfree(connector->display_info.bus_formats);
969 drm_mode_object_put(dev, &connector->base);
970 kfree(connector->name);
971 connector->name = NULL;
972 list_del(&connector->head);
973 dev->mode_config.num_connector--;
975 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
976 if (connector->state && connector->funcs->atomic_destroy_state)
977 connector->funcs->atomic_destroy_state(connector,
980 memset(connector, 0, sizeof(*connector));
982 EXPORT_SYMBOL(drm_connector_cleanup);
985 * drm_connector_index - find the index of a registered connector
986 * @connector: connector to find index for
988 * Given a registered connector, return the index of that connector within a DRM
989 * device's list of connectors.
991 unsigned int drm_connector_index(struct drm_connector *connector)
993 unsigned int index = 0;
994 struct drm_connector *tmp;
995 struct drm_mode_config *config = &connector->dev->mode_config;
997 WARN_ON(!drm_modeset_is_locked(&config->connection_mutex));
999 drm_for_each_connector(tmp, connector->dev) {
1000 if (tmp == connector)
1008 EXPORT_SYMBOL(drm_connector_index);
1011 * drm_connector_register - register a connector
1012 * @connector: the connector to register
1014 * Register userspace interfaces for a connector
1017 * Zero on success, error code on failure.
1019 int drm_connector_register(struct drm_connector *connector)
1023 drm_mode_object_register(connector->dev, &connector->base);
1025 ret = drm_sysfs_connector_add(connector);
1029 ret = drm_debugfs_connector_add(connector);
1031 drm_sysfs_connector_remove(connector);
1037 EXPORT_SYMBOL(drm_connector_register);
1040 * drm_connector_unregister - unregister a connector
1041 * @connector: the connector to unregister
1043 * Unregister userspace interfaces for a connector
1045 void drm_connector_unregister(struct drm_connector *connector)
1047 drm_sysfs_connector_remove(connector);
1048 drm_debugfs_connector_remove(connector);
1050 EXPORT_SYMBOL(drm_connector_unregister);
1054 * drm_connector_unplug_all - unregister connector userspace interfaces
1057 * This function unregisters all connector userspace interfaces in sysfs. Should
1058 * be call when the device is disconnected, e.g. from an usb driver's
1059 * ->disconnect callback.
1061 void drm_connector_unplug_all(struct drm_device *dev)
1063 struct drm_connector *connector;
1065 /* FIXME: taking the mode config mutex ends up in a clash with sysfs */
1066 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1067 drm_connector_unregister(connector);
1070 EXPORT_SYMBOL(drm_connector_unplug_all);
1073 * drm_encoder_init - Init a preallocated encoder
1075 * @encoder: the encoder to init
1076 * @funcs: callbacks for this encoder
1077 * @encoder_type: user visible type of the encoder
1079 * Initialises a preallocated encoder. Encoder should be
1080 * subclassed as part of driver encoder objects.
1083 * Zero on success, error code on failure.
1085 int drm_encoder_init(struct drm_device *dev,
1086 struct drm_encoder *encoder,
1087 const struct drm_encoder_funcs *funcs,
1092 drm_modeset_lock_all(dev);
1094 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1099 encoder->encoder_type = encoder_type;
1100 encoder->funcs = funcs;
1101 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1102 drm_encoder_enum_list[encoder_type].name,
1104 if (!encoder->name) {
1109 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1110 dev->mode_config.num_encoder++;
1114 drm_mode_object_put(dev, &encoder->base);
1117 drm_modeset_unlock_all(dev);
1121 EXPORT_SYMBOL(drm_encoder_init);
1124 * drm_encoder_cleanup - cleans up an initialised encoder
1125 * @encoder: encoder to cleanup
1127 * Cleans up the encoder but doesn't free the object.
1129 void drm_encoder_cleanup(struct drm_encoder *encoder)
1131 struct drm_device *dev = encoder->dev;
1133 drm_modeset_lock_all(dev);
1134 drm_mode_object_put(dev, &encoder->base);
1135 kfree(encoder->name);
1136 list_del(&encoder->head);
1137 dev->mode_config.num_encoder--;
1138 drm_modeset_unlock_all(dev);
1140 memset(encoder, 0, sizeof(*encoder));
1142 EXPORT_SYMBOL(drm_encoder_cleanup);
1145 * drm_universal_plane_init - Initialize a new universal plane object
1147 * @plane: plane object to init
1148 * @possible_crtcs: bitmask of possible CRTCs
1149 * @funcs: callbacks for the new plane
1150 * @formats: array of supported formats (%DRM_FORMAT_*)
1151 * @format_count: number of elements in @formats
1152 * @type: type of plane (overlay, primary, cursor)
1154 * Initializes a plane object of type @type.
1157 * Zero on success, error code on failure.
1159 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1160 unsigned long possible_crtcs,
1161 const struct drm_plane_funcs *funcs,
1162 const uint32_t *formats, unsigned int format_count,
1163 enum drm_plane_type type)
1165 struct drm_mode_config *config = &dev->mode_config;
1168 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1172 drm_modeset_lock_init(&plane->mutex);
1174 plane->base.properties = &plane->properties;
1176 plane->funcs = funcs;
1177 plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
1179 if (!plane->format_types) {
1180 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1181 drm_mode_object_put(dev, &plane->base);
1185 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1186 plane->format_count = format_count;
1187 plane->possible_crtcs = possible_crtcs;
1190 list_add_tail(&plane->head, &config->plane_list);
1191 config->num_total_plane++;
1192 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1193 config->num_overlay_plane++;
1195 drm_object_attach_property(&plane->base,
1196 config->plane_type_property,
1199 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
1200 drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
1201 drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
1202 drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
1203 drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
1204 drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
1205 drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
1206 drm_object_attach_property(&plane->base, config->prop_src_x, 0);
1207 drm_object_attach_property(&plane->base, config->prop_src_y, 0);
1208 drm_object_attach_property(&plane->base, config->prop_src_w, 0);
1209 drm_object_attach_property(&plane->base, config->prop_src_h, 0);
1214 EXPORT_SYMBOL(drm_universal_plane_init);
1217 * drm_plane_init - Initialize a legacy plane
1219 * @plane: plane object to init
1220 * @possible_crtcs: bitmask of possible CRTCs
1221 * @funcs: callbacks for the new plane
1222 * @formats: array of supported formats (%DRM_FORMAT_*)
1223 * @format_count: number of elements in @formats
1224 * @is_primary: plane type (primary vs overlay)
1226 * Legacy API to initialize a DRM plane.
1228 * New drivers should call drm_universal_plane_init() instead.
1231 * Zero on success, error code on failure.
1233 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1234 unsigned long possible_crtcs,
1235 const struct drm_plane_funcs *funcs,
1236 const uint32_t *formats, unsigned int format_count,
1239 enum drm_plane_type type;
1241 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1242 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1243 formats, format_count, type);
1245 EXPORT_SYMBOL(drm_plane_init);
1248 * drm_plane_cleanup - Clean up the core plane usage
1249 * @plane: plane to cleanup
1251 * This function cleans up @plane and removes it from the DRM mode setting
1252 * core. Note that the function does *not* free the plane structure itself,
1253 * this is the responsibility of the caller.
1255 void drm_plane_cleanup(struct drm_plane *plane)
1257 struct drm_device *dev = plane->dev;
1259 drm_modeset_lock_all(dev);
1260 kfree(plane->format_types);
1261 drm_mode_object_put(dev, &plane->base);
1263 BUG_ON(list_empty(&plane->head));
1265 list_del(&plane->head);
1266 dev->mode_config.num_total_plane--;
1267 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1268 dev->mode_config.num_overlay_plane--;
1269 drm_modeset_unlock_all(dev);
1271 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1272 if (plane->state && plane->funcs->atomic_destroy_state)
1273 plane->funcs->atomic_destroy_state(plane, plane->state);
1275 memset(plane, 0, sizeof(*plane));
1277 EXPORT_SYMBOL(drm_plane_cleanup);
1280 * drm_plane_index - find the index of a registered plane
1281 * @plane: plane to find index for
1283 * Given a registered plane, return the index of that CRTC within a DRM
1284 * device's list of planes.
1286 unsigned int drm_plane_index(struct drm_plane *plane)
1288 unsigned int index = 0;
1289 struct drm_plane *tmp;
1291 drm_for_each_plane(tmp, plane->dev) {
1300 EXPORT_SYMBOL(drm_plane_index);
1303 * drm_plane_from_index - find the registered plane at an index
1305 * @idx: index of registered plane to find for
1307 * Given a plane index, return the registered plane from DRM device's
1308 * list of planes with matching index.
1311 drm_plane_from_index(struct drm_device *dev, int idx)
1313 struct drm_plane *plane;
1316 drm_for_each_plane(plane, dev) {
1323 EXPORT_SYMBOL(drm_plane_from_index);
1326 * drm_plane_force_disable - Forcibly disable a plane
1327 * @plane: plane to disable
1329 * Forces the plane to be disabled.
1331 * Used when the plane's current framebuffer is destroyed,
1332 * and when restoring fbdev mode.
1334 void drm_plane_force_disable(struct drm_plane *plane)
1341 plane->old_fb = plane->fb;
1342 ret = plane->funcs->disable_plane(plane);
1344 DRM_ERROR("failed to disable plane with busy fb\n");
1345 plane->old_fb = NULL;
1348 /* disconnect the plane from the fb and crtc: */
1349 drm_framebuffer_unreference(plane->old_fb);
1350 plane->old_fb = NULL;
1354 EXPORT_SYMBOL(drm_plane_force_disable);
1356 static int drm_mode_create_standard_properties(struct drm_device *dev)
1358 struct drm_property *prop;
1361 * Standard properties (apply to all connectors)
1363 prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1364 DRM_MODE_PROP_IMMUTABLE,
1368 dev->mode_config.edid_property = prop;
1370 prop = drm_property_create_enum(dev, 0,
1371 "DPMS", drm_dpms_enum_list,
1372 ARRAY_SIZE(drm_dpms_enum_list));
1375 dev->mode_config.dpms_property = prop;
1377 prop = drm_property_create(dev,
1378 DRM_MODE_PROP_BLOB |
1379 DRM_MODE_PROP_IMMUTABLE,
1383 dev->mode_config.path_property = prop;
1385 prop = drm_property_create(dev,
1386 DRM_MODE_PROP_BLOB |
1387 DRM_MODE_PROP_IMMUTABLE,
1391 dev->mode_config.tile_property = prop;
1393 prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1394 "type", drm_plane_type_enum_list,
1395 ARRAY_SIZE(drm_plane_type_enum_list));
1398 dev->mode_config.plane_type_property = prop;
1400 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1401 "SRC_X", 0, UINT_MAX);
1404 dev->mode_config.prop_src_x = prop;
1406 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1407 "SRC_Y", 0, UINT_MAX);
1410 dev->mode_config.prop_src_y = prop;
1412 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1413 "SRC_W", 0, UINT_MAX);
1416 dev->mode_config.prop_src_w = prop;
1418 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1419 "SRC_H", 0, UINT_MAX);
1422 dev->mode_config.prop_src_h = prop;
1424 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1425 "CRTC_X", INT_MIN, INT_MAX);
1428 dev->mode_config.prop_crtc_x = prop;
1430 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1431 "CRTC_Y", INT_MIN, INT_MAX);
1434 dev->mode_config.prop_crtc_y = prop;
1436 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1437 "CRTC_W", 0, INT_MAX);
1440 dev->mode_config.prop_crtc_w = prop;
1442 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1443 "CRTC_H", 0, INT_MAX);
1446 dev->mode_config.prop_crtc_h = prop;
1448 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1449 "FB_ID", DRM_MODE_OBJECT_FB);
1452 dev->mode_config.prop_fb_id = prop;
1454 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1455 "CRTC_ID", DRM_MODE_OBJECT_CRTC);
1458 dev->mode_config.prop_crtc_id = prop;
1460 prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
1464 dev->mode_config.prop_active = prop;
1466 prop = drm_property_create(dev,
1467 DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB,
1471 dev->mode_config.prop_mode_id = prop;
1477 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1480 * Called by a driver the first time a DVI-I connector is made.
1482 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1484 struct drm_property *dvi_i_selector;
1485 struct drm_property *dvi_i_subconnector;
1487 if (dev->mode_config.dvi_i_select_subconnector_property)
1491 drm_property_create_enum(dev, 0,
1492 "select subconnector",
1493 drm_dvi_i_select_enum_list,
1494 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1495 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1497 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1499 drm_dvi_i_subconnector_enum_list,
1500 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1501 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1505 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1508 * drm_create_tv_properties - create TV specific connector properties
1510 * @num_modes: number of different TV formats (modes) supported
1511 * @modes: array of pointers to strings containing name of each format
1513 * Called by a driver's TV initialization routine, this function creates
1514 * the TV specific connector properties for a given device. Caller is
1515 * responsible for allocating a list of format names and passing them to
1518 int drm_mode_create_tv_properties(struct drm_device *dev,
1519 unsigned int num_modes,
1520 const char * const modes[])
1522 struct drm_property *tv_selector;
1523 struct drm_property *tv_subconnector;
1526 if (dev->mode_config.tv_select_subconnector_property)
1530 * Basic connector properties
1532 tv_selector = drm_property_create_enum(dev, 0,
1533 "select subconnector",
1534 drm_tv_select_enum_list,
1535 ARRAY_SIZE(drm_tv_select_enum_list));
1539 dev->mode_config.tv_select_subconnector_property = tv_selector;
1542 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1544 drm_tv_subconnector_enum_list,
1545 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1546 if (!tv_subconnector)
1548 dev->mode_config.tv_subconnector_property = tv_subconnector;
1551 * Other, TV specific properties: margins & TV modes.
1553 dev->mode_config.tv_left_margin_property =
1554 drm_property_create_range(dev, 0, "left margin", 0, 100);
1555 if (!dev->mode_config.tv_left_margin_property)
1558 dev->mode_config.tv_right_margin_property =
1559 drm_property_create_range(dev, 0, "right margin", 0, 100);
1560 if (!dev->mode_config.tv_right_margin_property)
1563 dev->mode_config.tv_top_margin_property =
1564 drm_property_create_range(dev, 0, "top margin", 0, 100);
1565 if (!dev->mode_config.tv_top_margin_property)
1568 dev->mode_config.tv_bottom_margin_property =
1569 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1570 if (!dev->mode_config.tv_bottom_margin_property)
1573 dev->mode_config.tv_mode_property =
1574 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1576 if (!dev->mode_config.tv_mode_property)
1579 for (i = 0; i < num_modes; i++)
1580 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1583 dev->mode_config.tv_brightness_property =
1584 drm_property_create_range(dev, 0, "brightness", 0, 100);
1585 if (!dev->mode_config.tv_brightness_property)
1588 dev->mode_config.tv_contrast_property =
1589 drm_property_create_range(dev, 0, "contrast", 0, 100);
1590 if (!dev->mode_config.tv_contrast_property)
1593 dev->mode_config.tv_flicker_reduction_property =
1594 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1595 if (!dev->mode_config.tv_flicker_reduction_property)
1598 dev->mode_config.tv_overscan_property =
1599 drm_property_create_range(dev, 0, "overscan", 0, 100);
1600 if (!dev->mode_config.tv_overscan_property)
1603 dev->mode_config.tv_saturation_property =
1604 drm_property_create_range(dev, 0, "saturation", 0, 100);
1605 if (!dev->mode_config.tv_saturation_property)
1608 dev->mode_config.tv_hue_property =
1609 drm_property_create_range(dev, 0, "hue", 0, 100);
1610 if (!dev->mode_config.tv_hue_property)
1617 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1620 * drm_mode_create_scaling_mode_property - create scaling mode property
1623 * Called by a driver the first time it's needed, must be attached to desired
1626 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1628 struct drm_property *scaling_mode;
1630 if (dev->mode_config.scaling_mode_property)
1634 drm_property_create_enum(dev, 0, "scaling mode",
1635 drm_scaling_mode_enum_list,
1636 ARRAY_SIZE(drm_scaling_mode_enum_list));
1638 dev->mode_config.scaling_mode_property = scaling_mode;
1642 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1645 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1648 * Called by a driver the first time it's needed, must be attached to desired
1652 * Zero on success, negative errno on failure.
1654 int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1656 if (dev->mode_config.aspect_ratio_property)
1659 dev->mode_config.aspect_ratio_property =
1660 drm_property_create_enum(dev, 0, "aspect ratio",
1661 drm_aspect_ratio_enum_list,
1662 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1664 if (dev->mode_config.aspect_ratio_property == NULL)
1669 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1672 * drm_mode_create_dirty_property - create dirty property
1675 * Called by a driver the first time it's needed, must be attached to desired
1678 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1680 struct drm_property *dirty_info;
1682 if (dev->mode_config.dirty_info_property)
1686 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1688 drm_dirty_info_enum_list,
1689 ARRAY_SIZE(drm_dirty_info_enum_list));
1690 dev->mode_config.dirty_info_property = dirty_info;
1694 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1697 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1700 * Create the the suggested x/y offset property for connectors.
1702 int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1704 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1707 dev->mode_config.suggested_x_property =
1708 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1710 dev->mode_config.suggested_y_property =
1711 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1713 if (dev->mode_config.suggested_x_property == NULL ||
1714 dev->mode_config.suggested_y_property == NULL)
1718 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1721 * drm_mode_getresources - get graphics configuration
1722 * @dev: drm device for the ioctl
1723 * @data: data pointer for the ioctl
1724 * @file_priv: drm file for the ioctl call
1726 * Construct a set of configuration description structures and return
1727 * them to the user, including CRTC, connector and framebuffer configuration.
1729 * Called by the user via ioctl.
1732 * Zero on success, negative errno on failure.
1734 int drm_mode_getresources(struct drm_device *dev, void *data,
1735 struct drm_file *file_priv)
1737 struct drm_mode_card_res *card_res = data;
1738 struct list_head *lh;
1739 struct drm_framebuffer *fb;
1740 struct drm_connector *connector;
1741 struct drm_crtc *crtc;
1742 struct drm_encoder *encoder;
1744 int connector_count = 0;
1747 int encoder_count = 0;
1749 uint32_t __user *fb_id;
1750 uint32_t __user *crtc_id;
1751 uint32_t __user *connector_id;
1752 uint32_t __user *encoder_id;
1754 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1758 mutex_lock(&file_priv->fbs_lock);
1760 * For the non-control nodes we need to limit the list of resources
1761 * by IDs in the group list for this node
1763 list_for_each(lh, &file_priv->fbs)
1766 /* handle this in 4 parts */
1768 if (card_res->count_fbs >= fb_count) {
1770 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1771 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1772 if (put_user(fb->base.id, fb_id + copied)) {
1773 mutex_unlock(&file_priv->fbs_lock);
1779 card_res->count_fbs = fb_count;
1780 mutex_unlock(&file_priv->fbs_lock);
1782 /* mode_config.mutex protects the connector list against e.g. DP MST
1783 * connector hot-adding. CRTC/Plane lists are invariant. */
1784 mutex_lock(&dev->mode_config.mutex);
1785 drm_for_each_crtc(crtc, dev)
1788 drm_for_each_connector(connector, dev)
1791 drm_for_each_encoder(encoder, dev)
1794 card_res->max_height = dev->mode_config.max_height;
1795 card_res->min_height = dev->mode_config.min_height;
1796 card_res->max_width = dev->mode_config.max_width;
1797 card_res->min_width = dev->mode_config.min_width;
1800 if (card_res->count_crtcs >= crtc_count) {
1802 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1803 drm_for_each_crtc(crtc, dev) {
1804 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1805 if (put_user(crtc->base.id, crtc_id + copied)) {
1812 card_res->count_crtcs = crtc_count;
1815 if (card_res->count_encoders >= encoder_count) {
1817 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1818 drm_for_each_encoder(encoder, dev) {
1819 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1821 if (put_user(encoder->base.id, encoder_id +
1829 card_res->count_encoders = encoder_count;
1832 if (card_res->count_connectors >= connector_count) {
1834 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1835 drm_for_each_connector(connector, dev) {
1836 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1839 if (put_user(connector->base.id,
1840 connector_id + copied)) {
1847 card_res->count_connectors = connector_count;
1849 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1850 card_res->count_connectors, card_res->count_encoders);
1853 mutex_unlock(&dev->mode_config.mutex);
1858 * drm_mode_getcrtc - get CRTC configuration
1859 * @dev: drm device for the ioctl
1860 * @data: data pointer for the ioctl
1861 * @file_priv: drm file for the ioctl call
1863 * Construct a CRTC configuration structure to return to the user.
1865 * Called by the user via ioctl.
1868 * Zero on success, negative errno on failure.
1870 int drm_mode_getcrtc(struct drm_device *dev,
1871 void *data, struct drm_file *file_priv)
1873 struct drm_mode_crtc *crtc_resp = data;
1874 struct drm_crtc *crtc;
1876 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1879 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
1883 drm_modeset_lock_crtc(crtc, crtc->primary);
1884 crtc_resp->gamma_size = crtc->gamma_size;
1885 if (crtc->primary->fb)
1886 crtc_resp->fb_id = crtc->primary->fb->base.id;
1888 crtc_resp->fb_id = 0;
1891 crtc_resp->x = crtc->primary->state->src_x >> 16;
1892 crtc_resp->y = crtc->primary->state->src_y >> 16;
1893 if (crtc->state->enable) {
1894 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode);
1895 crtc_resp->mode_valid = 1;
1898 crtc_resp->mode_valid = 0;
1901 crtc_resp->x = crtc->x;
1902 crtc_resp->y = crtc->y;
1903 if (crtc->enabled) {
1904 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1905 crtc_resp->mode_valid = 1;
1908 crtc_resp->mode_valid = 0;
1911 drm_modeset_unlock_crtc(crtc);
1916 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1917 const struct drm_file *file_priv)
1920 * If user-space hasn't configured the driver to expose the stereo 3D
1921 * modes, don't expose them.
1923 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1929 static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
1931 /* For atomic drivers only state objects are synchronously updated and
1932 * protected by modeset locks, so check those first. */
1933 if (connector->state)
1934 return connector->state->best_encoder;
1935 return connector->encoder;
1938 /* helper for getconnector and getproperties ioctls */
1939 static int get_properties(struct drm_mode_object *obj, bool atomic,
1940 uint32_t __user *prop_ptr, uint64_t __user *prop_values,
1941 uint32_t *arg_count_props)
1946 props_count = obj->properties->count;
1948 props_count -= obj->properties->atomic_count;
1950 if ((*arg_count_props >= props_count) && props_count) {
1951 for (i = 0, copied = 0; copied < props_count; i++) {
1952 struct drm_property *prop = obj->properties->properties[i];
1955 if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
1958 ret = drm_object_property_get_value(obj, prop, &val);
1962 if (put_user(prop->base.id, prop_ptr + copied))
1965 if (put_user(val, prop_values + copied))
1971 *arg_count_props = props_count;
1977 * drm_mode_getconnector - get connector configuration
1978 * @dev: drm device for the ioctl
1979 * @data: data pointer for the ioctl
1980 * @file_priv: drm file for the ioctl call
1982 * Construct a connector configuration structure to return to the user.
1984 * Called by the user via ioctl.
1987 * Zero on success, negative errno on failure.
1989 int drm_mode_getconnector(struct drm_device *dev, void *data,
1990 struct drm_file *file_priv)
1992 struct drm_mode_get_connector *out_resp = data;
1993 struct drm_connector *connector;
1994 struct drm_encoder *encoder;
1995 struct drm_display_mode *mode;
1997 int encoders_count = 0;
2001 struct drm_mode_modeinfo u_mode;
2002 struct drm_mode_modeinfo __user *mode_ptr;
2003 uint32_t __user *encoder_ptr;
2005 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2008 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
2010 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
2012 mutex_lock(&dev->mode_config.mutex);
2014 connector = drm_connector_find(dev, out_resp->connector_id);
2020 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
2021 if (connector->encoder_ids[i] != 0)
2024 if (out_resp->count_modes == 0) {
2025 connector->funcs->fill_modes(connector,
2026 dev->mode_config.max_width,
2027 dev->mode_config.max_height);
2030 /* delayed so we get modes regardless of pre-fill_modes state */
2031 list_for_each_entry(mode, &connector->modes, head)
2032 if (drm_mode_expose_to_userspace(mode, file_priv))
2035 out_resp->connector_id = connector->base.id;
2036 out_resp->connector_type = connector->connector_type;
2037 out_resp->connector_type_id = connector->connector_type_id;
2038 out_resp->mm_width = connector->display_info.width_mm;
2039 out_resp->mm_height = connector->display_info.height_mm;
2040 out_resp->subpixel = connector->display_info.subpixel_order;
2041 out_resp->connection = connector->status;
2043 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2044 encoder = drm_connector_get_encoder(connector);
2046 out_resp->encoder_id = encoder->base.id;
2048 out_resp->encoder_id = 0;
2051 * This ioctl is called twice, once to determine how much space is
2052 * needed, and the 2nd time to fill it.
2054 if ((out_resp->count_modes >= mode_count) && mode_count) {
2056 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
2057 list_for_each_entry(mode, &connector->modes, head) {
2058 if (!drm_mode_expose_to_userspace(mode, file_priv))
2061 drm_mode_convert_to_umode(&u_mode, mode);
2062 if (copy_to_user(mode_ptr + copied,
2063 &u_mode, sizeof(u_mode))) {
2070 out_resp->count_modes = mode_count;
2072 ret = get_properties(&connector->base, file_priv->atomic,
2073 (uint32_t __user *)(unsigned long)(out_resp->props_ptr),
2074 (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr),
2075 &out_resp->count_props);
2079 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2081 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
2082 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2083 if (connector->encoder_ids[i] != 0) {
2084 if (put_user(connector->encoder_ids[i],
2085 encoder_ptr + copied)) {
2093 out_resp->count_encoders = encoders_count;
2096 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2099 mutex_unlock(&dev->mode_config.mutex);
2104 static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2106 struct drm_connector *connector;
2107 struct drm_device *dev = encoder->dev;
2108 bool uses_atomic = false;
2110 /* For atomic drivers only state objects are synchronously updated and
2111 * protected by modeset locks, so check those first. */
2112 drm_for_each_connector(connector, dev) {
2113 if (!connector->state)
2118 if (connector->state->best_encoder != encoder)
2121 return connector->state->crtc;
2124 /* Don't return stale data (e.g. pending async disable). */
2128 return encoder->crtc;
2132 * drm_mode_getencoder - get encoder configuration
2133 * @dev: drm device for the ioctl
2134 * @data: data pointer for the ioctl
2135 * @file_priv: drm file for the ioctl call
2137 * Construct a encoder configuration structure to return to the user.
2139 * Called by the user via ioctl.
2142 * Zero on success, negative errno on failure.
2144 int drm_mode_getencoder(struct drm_device *dev, void *data,
2145 struct drm_file *file_priv)
2147 struct drm_mode_get_encoder *enc_resp = data;
2148 struct drm_encoder *encoder;
2149 struct drm_crtc *crtc;
2151 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2154 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
2158 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2159 crtc = drm_encoder_get_crtc(encoder);
2161 enc_resp->crtc_id = crtc->base.id;
2163 enc_resp->crtc_id = 0;
2164 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2166 enc_resp->encoder_type = encoder->encoder_type;
2167 enc_resp->encoder_id = encoder->base.id;
2168 enc_resp->possible_crtcs = encoder->possible_crtcs;
2169 enc_resp->possible_clones = encoder->possible_clones;
2175 * drm_mode_getplane_res - enumerate all plane resources
2178 * @file_priv: DRM file info
2180 * Construct a list of plane ids to return to the user.
2182 * Called by the user via ioctl.
2185 * Zero on success, negative errno on failure.
2187 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2188 struct drm_file *file_priv)
2190 struct drm_mode_get_plane_res *plane_resp = data;
2191 struct drm_mode_config *config;
2192 struct drm_plane *plane;
2193 uint32_t __user *plane_ptr;
2195 unsigned num_planes;
2197 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2200 config = &dev->mode_config;
2202 if (file_priv->universal_planes)
2203 num_planes = config->num_total_plane;
2205 num_planes = config->num_overlay_plane;
2208 * This ioctl is called twice, once to determine how much space is
2209 * needed, and the 2nd time to fill it.
2212 (plane_resp->count_planes >= num_planes)) {
2213 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2215 /* Plane lists are invariant, no locking needed. */
2216 drm_for_each_plane(plane, dev) {
2218 * Unless userspace set the 'universal planes'
2219 * capability bit, only advertise overlays.
2221 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2222 !file_priv->universal_planes)
2225 if (put_user(plane->base.id, plane_ptr + copied))
2230 plane_resp->count_planes = num_planes;
2236 * drm_mode_getplane - get plane configuration
2239 * @file_priv: DRM file info
2241 * Construct a plane configuration structure to return to the user.
2243 * Called by the user via ioctl.
2246 * Zero on success, negative errno on failure.
2248 int drm_mode_getplane(struct drm_device *dev, void *data,
2249 struct drm_file *file_priv)
2251 struct drm_mode_get_plane *plane_resp = data;
2252 struct drm_plane *plane;
2253 uint32_t __user *format_ptr;
2255 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2258 plane = drm_plane_find(dev, plane_resp->plane_id);
2262 drm_modeset_lock(&plane->mutex, NULL);
2264 plane_resp->crtc_id = plane->crtc->base.id;
2266 plane_resp->crtc_id = 0;
2269 plane_resp->fb_id = plane->fb->base.id;
2271 plane_resp->fb_id = 0;
2272 drm_modeset_unlock(&plane->mutex);
2274 plane_resp->plane_id = plane->base.id;
2275 plane_resp->possible_crtcs = plane->possible_crtcs;
2276 plane_resp->gamma_size = 0;
2279 * This ioctl is called twice, once to determine how much space is
2280 * needed, and the 2nd time to fill it.
2282 if (plane->format_count &&
2283 (plane_resp->count_format_types >= plane->format_count)) {
2284 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2285 if (copy_to_user(format_ptr,
2286 plane->format_types,
2287 sizeof(uint32_t) * plane->format_count)) {
2291 plane_resp->count_format_types = plane->format_count;
2297 * drm_plane_check_pixel_format - Check if the plane supports the pixel format
2298 * @plane: plane to check for format support
2299 * @format: the pixel format
2302 * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
2305 int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format)
2309 for (i = 0; i < plane->format_count; i++) {
2310 if (format == plane->format_types[i])
2317 static int check_src_coords(uint32_t src_x, uint32_t src_y,
2318 uint32_t src_w, uint32_t src_h,
2319 const struct drm_framebuffer *fb)
2321 unsigned int fb_width, fb_height;
2323 fb_width = fb->width << 16;
2324 fb_height = fb->height << 16;
2326 /* Make sure source coordinates are inside the fb. */
2327 if (src_w > fb_width ||
2328 src_x > fb_width - src_w ||
2329 src_h > fb_height ||
2330 src_y > fb_height - src_h) {
2331 DRM_DEBUG_KMS("Invalid source coordinates "
2332 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2333 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2334 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2335 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2336 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2344 * setplane_internal - setplane handler for internal callers
2346 * Note that we assume an extra reference has already been taken on fb. If the
2347 * update fails, this reference will be dropped before return; if it succeeds,
2348 * the previous framebuffer (if any) will be unreferenced instead.
2350 * src_{x,y,w,h} are provided in 16.16 fixed point format
2352 static int __setplane_internal(struct drm_plane *plane,
2353 struct drm_crtc *crtc,
2354 struct drm_framebuffer *fb,
2355 int32_t crtc_x, int32_t crtc_y,
2356 uint32_t crtc_w, uint32_t crtc_h,
2357 /* src_{x,y,w,h} values are 16.16 fixed point */
2358 uint32_t src_x, uint32_t src_y,
2359 uint32_t src_w, uint32_t src_h)
2363 /* No fb means shut it down */
2365 plane->old_fb = plane->fb;
2366 ret = plane->funcs->disable_plane(plane);
2371 plane->old_fb = NULL;
2376 /* Check whether this plane is usable on this CRTC */
2377 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2378 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2383 /* Check whether this plane supports the fb pixel format. */
2384 ret = drm_plane_check_pixel_format(plane, fb->pixel_format);
2386 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2387 drm_get_format_name(fb->pixel_format));
2391 /* Give drivers some help against integer overflows */
2392 if (crtc_w > INT_MAX ||
2393 crtc_x > INT_MAX - (int32_t) crtc_w ||
2395 crtc_y > INT_MAX - (int32_t) crtc_h) {
2396 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2397 crtc_w, crtc_h, crtc_x, crtc_y);
2402 ret = check_src_coords(src_x, src_y, src_w, src_h, fb);
2406 plane->old_fb = plane->fb;
2407 ret = plane->funcs->update_plane(plane, crtc, fb,
2408 crtc_x, crtc_y, crtc_w, crtc_h,
2409 src_x, src_y, src_w, src_h);
2415 plane->old_fb = NULL;
2420 drm_framebuffer_unreference(fb);
2422 drm_framebuffer_unreference(plane->old_fb);
2423 plane->old_fb = NULL;
2428 static int setplane_internal(struct drm_plane *plane,
2429 struct drm_crtc *crtc,
2430 struct drm_framebuffer *fb,
2431 int32_t crtc_x, int32_t crtc_y,
2432 uint32_t crtc_w, uint32_t crtc_h,
2433 /* src_{x,y,w,h} values are 16.16 fixed point */
2434 uint32_t src_x, uint32_t src_y,
2435 uint32_t src_w, uint32_t src_h)
2439 drm_modeset_lock_all(plane->dev);
2440 ret = __setplane_internal(plane, crtc, fb,
2441 crtc_x, crtc_y, crtc_w, crtc_h,
2442 src_x, src_y, src_w, src_h);
2443 drm_modeset_unlock_all(plane->dev);
2449 * drm_mode_setplane - configure a plane's configuration
2451 * @data: ioctl data*
2452 * @file_priv: DRM file info
2454 * Set plane configuration, including placement, fb, scaling, and other factors.
2455 * Or pass a NULL fb to disable (planes may be disabled without providing a
2459 * Zero on success, negative errno on failure.
2461 int drm_mode_setplane(struct drm_device *dev, void *data,
2462 struct drm_file *file_priv)
2464 struct drm_mode_set_plane *plane_req = data;
2465 struct drm_plane *plane;
2466 struct drm_crtc *crtc = NULL;
2467 struct drm_framebuffer *fb = NULL;
2469 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2473 * First, find the plane, crtc, and fb objects. If not available,
2474 * we don't bother to call the driver.
2476 plane = drm_plane_find(dev, plane_req->plane_id);
2478 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2479 plane_req->plane_id);
2483 if (plane_req->fb_id) {
2484 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2486 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2491 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2493 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2494 plane_req->crtc_id);
2500 * setplane_internal will take care of deref'ing either the old or new
2501 * framebuffer depending on success.
2503 return setplane_internal(plane, crtc, fb,
2504 plane_req->crtc_x, plane_req->crtc_y,
2505 plane_req->crtc_w, plane_req->crtc_h,
2506 plane_req->src_x, plane_req->src_y,
2507 plane_req->src_w, plane_req->src_h);
2511 * drm_mode_set_config_internal - helper to call ->set_config
2512 * @set: modeset config to set
2514 * This is a little helper to wrap internal calls to the ->set_config driver
2515 * interface. The only thing it adds is correct refcounting dance.
2518 * Zero on success, negative errno on failure.
2520 int drm_mode_set_config_internal(struct drm_mode_set *set)
2522 struct drm_crtc *crtc = set->crtc;
2523 struct drm_framebuffer *fb;
2524 struct drm_crtc *tmp;
2528 * NOTE: ->set_config can also disable other crtcs (if we steal all
2529 * connectors from it), hence we need to refcount the fbs across all
2530 * crtcs. Atomic modeset will have saner semantics ...
2532 drm_for_each_crtc(tmp, crtc->dev)
2533 tmp->primary->old_fb = tmp->primary->fb;
2537 ret = crtc->funcs->set_config(set);
2539 crtc->primary->crtc = crtc;
2540 crtc->primary->fb = fb;
2543 drm_for_each_crtc(tmp, crtc->dev) {
2544 if (tmp->primary->fb)
2545 drm_framebuffer_reference(tmp->primary->fb);
2546 if (tmp->primary->old_fb)
2547 drm_framebuffer_unreference(tmp->primary->old_fb);
2548 tmp->primary->old_fb = NULL;
2553 EXPORT_SYMBOL(drm_mode_set_config_internal);
2556 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2557 * @mode: mode to query
2558 * @hdisplay: hdisplay value to fill in
2559 * @vdisplay: vdisplay value to fill in
2561 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2562 * the appropriate layout.
2564 void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
2565 int *hdisplay, int *vdisplay)
2567 struct drm_display_mode adjusted;
2569 drm_mode_copy(&adjusted, mode);
2570 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
2571 *hdisplay = adjusted.crtc_hdisplay;
2572 *vdisplay = adjusted.crtc_vdisplay;
2574 EXPORT_SYMBOL(drm_crtc_get_hv_timing);
2577 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2579 * @crtc: CRTC that framebuffer will be displayed on
2582 * @mode: mode that framebuffer will be displayed under
2583 * @fb: framebuffer to check size of
2585 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2587 const struct drm_display_mode *mode,
2588 const struct drm_framebuffer *fb)
2591 int hdisplay, vdisplay;
2593 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
2596 crtc->primary->state->rotation & (BIT(DRM_ROTATE_90) |
2597 BIT(DRM_ROTATE_270)))
2598 swap(hdisplay, vdisplay);
2600 return check_src_coords(x << 16, y << 16,
2601 hdisplay << 16, vdisplay << 16, fb);
2603 EXPORT_SYMBOL(drm_crtc_check_viewport);
2606 * drm_mode_setcrtc - set CRTC configuration
2607 * @dev: drm device for the ioctl
2608 * @data: data pointer for the ioctl
2609 * @file_priv: drm file for the ioctl call
2611 * Build a new CRTC configuration based on user request.
2613 * Called by the user via ioctl.
2616 * Zero on success, negative errno on failure.
2618 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2619 struct drm_file *file_priv)
2621 struct drm_mode_config *config = &dev->mode_config;
2622 struct drm_mode_crtc *crtc_req = data;
2623 struct drm_crtc *crtc;
2624 struct drm_connector **connector_set = NULL, *connector;
2625 struct drm_framebuffer *fb = NULL;
2626 struct drm_display_mode *mode = NULL;
2627 struct drm_mode_set set;
2628 uint32_t __user *set_connectors_ptr;
2632 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2636 * Universal plane src offsets are only 16.16, prevent havoc for
2637 * drivers using universal plane code internally.
2639 if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000)
2642 drm_modeset_lock_all(dev);
2643 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2645 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2649 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2651 if (crtc_req->mode_valid) {
2652 /* If we have a mode we need a framebuffer. */
2653 /* If we pass -1, set the mode with the currently bound fb */
2654 if (crtc_req->fb_id == -1) {
2655 if (!crtc->primary->fb) {
2656 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2660 fb = crtc->primary->fb;
2661 /* Make refcounting symmetric with the lookup path. */
2662 drm_framebuffer_reference(fb);
2664 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2666 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2673 mode = drm_mode_create(dev);
2679 ret = drm_mode_convert_umode(mode, &crtc_req->mode);
2681 DRM_DEBUG_KMS("Invalid mode\n");
2686 * Check whether the primary plane supports the fb pixel format.
2687 * Drivers not implementing the universal planes API use a
2688 * default formats list provided by the DRM core which doesn't
2689 * match real hardware capabilities. Skip the check in that
2692 if (!crtc->primary->format_default) {
2693 ret = drm_plane_check_pixel_format(crtc->primary,
2696 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2697 drm_get_format_name(fb->pixel_format));
2702 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2709 if (crtc_req->count_connectors == 0 && mode) {
2710 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2715 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2716 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2717 crtc_req->count_connectors);
2722 if (crtc_req->count_connectors > 0) {
2725 /* Avoid unbounded kernel memory allocation */
2726 if (crtc_req->count_connectors > config->num_connector) {
2731 connector_set = kmalloc_array(crtc_req->count_connectors,
2732 sizeof(struct drm_connector *),
2734 if (!connector_set) {
2739 for (i = 0; i < crtc_req->count_connectors; i++) {
2740 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2741 if (get_user(out_id, &set_connectors_ptr[i])) {
2746 connector = drm_connector_find(dev, out_id);
2748 DRM_DEBUG_KMS("Connector id %d unknown\n",
2753 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2757 connector_set[i] = connector;
2762 set.x = crtc_req->x;
2763 set.y = crtc_req->y;
2765 set.connectors = connector_set;
2766 set.num_connectors = crtc_req->count_connectors;
2768 ret = drm_mode_set_config_internal(&set);
2772 drm_framebuffer_unreference(fb);
2774 kfree(connector_set);
2775 drm_mode_destroy(dev, mode);
2776 drm_modeset_unlock_all(dev);
2781 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2782 * universal plane handler call
2783 * @crtc: crtc to update cursor for
2784 * @req: data pointer for the ioctl
2785 * @file_priv: drm file for the ioctl call
2787 * Legacy cursor ioctl's work directly with driver buffer handles. To
2788 * translate legacy ioctl calls into universal plane handler calls, we need to
2789 * wrap the native buffer handle in a drm_framebuffer.
2791 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2792 * buffer with a pitch of 4*width; the universal plane interface should be used
2793 * directly in cases where the hardware can support other buffer settings and
2794 * userspace wants to make use of these capabilities.
2797 * Zero on success, negative errno on failure.
2799 static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2800 struct drm_mode_cursor2 *req,
2801 struct drm_file *file_priv)
2803 struct drm_device *dev = crtc->dev;
2804 struct drm_framebuffer *fb = NULL;
2805 struct drm_mode_fb_cmd2 fbreq = {
2806 .width = req->width,
2807 .height = req->height,
2808 .pixel_format = DRM_FORMAT_ARGB8888,
2809 .pitches = { req->width * 4 },
2810 .handles = { req->handle },
2812 int32_t crtc_x, crtc_y;
2813 uint32_t crtc_w = 0, crtc_h = 0;
2814 uint32_t src_w = 0, src_h = 0;
2817 BUG_ON(!crtc->cursor);
2818 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
2821 * Obtain fb we'll be using (either new or existing) and take an extra
2822 * reference to it if fb != null. setplane will take care of dropping
2823 * the reference if the plane update fails.
2825 if (req->flags & DRM_MODE_CURSOR_BO) {
2827 fb = internal_framebuffer_create(dev, &fbreq, file_priv);
2829 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2836 fb = crtc->cursor->fb;
2838 drm_framebuffer_reference(fb);
2841 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2845 crtc_x = crtc->cursor_x;
2846 crtc_y = crtc->cursor_y;
2851 crtc_h = fb->height;
2852 src_w = fb->width << 16;
2853 src_h = fb->height << 16;
2857 * setplane_internal will take care of deref'ing either the old or new
2858 * framebuffer depending on success.
2860 ret = __setplane_internal(crtc->cursor, crtc, fb,
2861 crtc_x, crtc_y, crtc_w, crtc_h,
2862 0, 0, src_w, src_h);
2864 /* Update successful; save new cursor position, if necessary */
2865 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2866 crtc->cursor_x = req->x;
2867 crtc->cursor_y = req->y;
2873 static int drm_mode_cursor_common(struct drm_device *dev,
2874 struct drm_mode_cursor2 *req,
2875 struct drm_file *file_priv)
2877 struct drm_crtc *crtc;
2880 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2883 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2886 crtc = drm_crtc_find(dev, req->crtc_id);
2888 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2893 * If this crtc has a universal cursor plane, call that plane's update
2894 * handler rather than using legacy cursor handlers.
2896 drm_modeset_lock_crtc(crtc, crtc->cursor);
2898 ret = drm_mode_cursor_universal(crtc, req, file_priv);
2902 if (req->flags & DRM_MODE_CURSOR_BO) {
2903 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
2907 /* Turns off the cursor if handle is 0 */
2908 if (crtc->funcs->cursor_set2)
2909 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2910 req->width, req->height, req->hot_x, req->hot_y);
2912 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2913 req->width, req->height);
2916 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2917 if (crtc->funcs->cursor_move) {
2918 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2925 drm_modeset_unlock_crtc(crtc);
2933 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2934 * @dev: drm device for the ioctl
2935 * @data: data pointer for the ioctl
2936 * @file_priv: drm file for the ioctl call
2938 * Set the cursor configuration based on user request.
2940 * Called by the user via ioctl.
2943 * Zero on success, negative errno on failure.
2945 int drm_mode_cursor_ioctl(struct drm_device *dev,
2946 void *data, struct drm_file *file_priv)
2948 struct drm_mode_cursor *req = data;
2949 struct drm_mode_cursor2 new_req;
2951 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2952 new_req.hot_x = new_req.hot_y = 0;
2954 return drm_mode_cursor_common(dev, &new_req, file_priv);
2958 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2959 * @dev: drm device for the ioctl
2960 * @data: data pointer for the ioctl
2961 * @file_priv: drm file for the ioctl call
2963 * Set the cursor configuration based on user request. This implements the 2nd
2964 * version of the cursor ioctl, which allows userspace to additionally specify
2965 * the hotspot of the pointer.
2967 * Called by the user via ioctl.
2970 * Zero on success, negative errno on failure.
2972 int drm_mode_cursor2_ioctl(struct drm_device *dev,
2973 void *data, struct drm_file *file_priv)
2975 struct drm_mode_cursor2 *req = data;
2977 return drm_mode_cursor_common(dev, req, file_priv);
2981 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2982 * @bpp: bits per pixels
2983 * @depth: bit depth per pixel
2985 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2986 * Useful in fbdev emulation code, since that deals in those values.
2988 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2994 fmt = DRM_FORMAT_C8;
2998 fmt = DRM_FORMAT_XRGB1555;
3000 fmt = DRM_FORMAT_RGB565;
3003 fmt = DRM_FORMAT_RGB888;
3007 fmt = DRM_FORMAT_XRGB8888;
3008 else if (depth == 30)
3009 fmt = DRM_FORMAT_XRGB2101010;
3011 fmt = DRM_FORMAT_ARGB8888;
3014 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3015 fmt = DRM_FORMAT_XRGB8888;
3021 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3024 * drm_mode_addfb - add an FB to the graphics configuration
3025 * @dev: drm device for the ioctl
3026 * @data: data pointer for the ioctl
3027 * @file_priv: drm file for the ioctl call
3029 * Add a new FB to the specified CRTC, given a user request. This is the
3030 * original addfb ioctl which only supported RGB formats.
3032 * Called by the user via ioctl.
3035 * Zero on success, negative errno on failure.
3037 int drm_mode_addfb(struct drm_device *dev,
3038 void *data, struct drm_file *file_priv)
3040 struct drm_mode_fb_cmd *or = data;
3041 struct drm_mode_fb_cmd2 r = {};
3044 /* convert to new format and call new ioctl */
3045 r.fb_id = or->fb_id;
3046 r.width = or->width;
3047 r.height = or->height;
3048 r.pitches[0] = or->pitch;
3049 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3050 r.handles[0] = or->handle;
3052 ret = drm_mode_addfb2(dev, &r, file_priv);
3056 or->fb_id = r.fb_id;
3061 static int format_check(const struct drm_mode_fb_cmd2 *r)
3063 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3067 case DRM_FORMAT_RGB332:
3068 case DRM_FORMAT_BGR233:
3069 case DRM_FORMAT_XRGB4444:
3070 case DRM_FORMAT_XBGR4444:
3071 case DRM_FORMAT_RGBX4444:
3072 case DRM_FORMAT_BGRX4444:
3073 case DRM_FORMAT_ARGB4444:
3074 case DRM_FORMAT_ABGR4444:
3075 case DRM_FORMAT_RGBA4444:
3076 case DRM_FORMAT_BGRA4444:
3077 case DRM_FORMAT_XRGB1555:
3078 case DRM_FORMAT_XBGR1555:
3079 case DRM_FORMAT_RGBX5551:
3080 case DRM_FORMAT_BGRX5551:
3081 case DRM_FORMAT_ARGB1555:
3082 case DRM_FORMAT_ABGR1555:
3083 case DRM_FORMAT_RGBA5551:
3084 case DRM_FORMAT_BGRA5551:
3085 case DRM_FORMAT_RGB565:
3086 case DRM_FORMAT_BGR565:
3087 case DRM_FORMAT_RGB888:
3088 case DRM_FORMAT_BGR888:
3089 case DRM_FORMAT_XRGB8888:
3090 case DRM_FORMAT_XBGR8888:
3091 case DRM_FORMAT_RGBX8888:
3092 case DRM_FORMAT_BGRX8888:
3093 case DRM_FORMAT_ARGB8888:
3094 case DRM_FORMAT_ABGR8888:
3095 case DRM_FORMAT_RGBA8888:
3096 case DRM_FORMAT_BGRA8888:
3097 case DRM_FORMAT_XRGB2101010:
3098 case DRM_FORMAT_XBGR2101010:
3099 case DRM_FORMAT_RGBX1010102:
3100 case DRM_FORMAT_BGRX1010102:
3101 case DRM_FORMAT_ARGB2101010:
3102 case DRM_FORMAT_ABGR2101010:
3103 case DRM_FORMAT_RGBA1010102:
3104 case DRM_FORMAT_BGRA1010102:
3105 case DRM_FORMAT_YUYV:
3106 case DRM_FORMAT_YVYU:
3107 case DRM_FORMAT_UYVY:
3108 case DRM_FORMAT_VYUY:
3109 case DRM_FORMAT_AYUV:
3110 case DRM_FORMAT_NV12:
3111 case DRM_FORMAT_NV21:
3112 case DRM_FORMAT_NV16:
3113 case DRM_FORMAT_NV61:
3114 case DRM_FORMAT_NV24:
3115 case DRM_FORMAT_NV42:
3116 case DRM_FORMAT_YUV410:
3117 case DRM_FORMAT_YVU410:
3118 case DRM_FORMAT_YUV411:
3119 case DRM_FORMAT_YVU411:
3120 case DRM_FORMAT_YUV420:
3121 case DRM_FORMAT_YVU420:
3122 case DRM_FORMAT_YUV422:
3123 case DRM_FORMAT_YVU422:
3124 case DRM_FORMAT_YUV444:
3125 case DRM_FORMAT_YVU444:
3128 DRM_DEBUG_KMS("invalid pixel format %s\n",
3129 drm_get_format_name(r->pixel_format));
3134 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
3136 int ret, hsub, vsub, num_planes, i;
3138 ret = format_check(r);
3140 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3141 drm_get_format_name(r->pixel_format));
3145 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3146 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3147 num_planes = drm_format_num_planes(r->pixel_format);
3149 if (r->width == 0 || r->width % hsub) {
3150 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
3154 if (r->height == 0 || r->height % vsub) {
3155 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
3159 for (i = 0; i < num_planes; i++) {
3160 unsigned int width = r->width / (i != 0 ? hsub : 1);
3161 unsigned int height = r->height / (i != 0 ? vsub : 1);
3162 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
3164 if (!r->handles[i]) {
3165 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
3169 if ((uint64_t) width * cpp > UINT_MAX)
3172 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3175 if (r->pitches[i] < width * cpp) {
3176 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
3180 if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
3181 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3186 /* modifier specific checks: */
3187 switch (r->modifier[i]) {
3188 case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE:
3189 /* NOTE: the pitch restriction may be lifted later if it turns
3190 * out that no hw has this restriction:
3192 if (r->pixel_format != DRM_FORMAT_NV12 ||
3193 width % 128 || height % 32 ||
3194 r->pitches[i] % 128) {
3195 DRM_DEBUG_KMS("bad modifier data for plane %d\n", i);
3205 for (i = num_planes; i < 4; i++) {
3206 if (r->modifier[i]) {
3207 DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i);
3211 /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
3212 if (!(r->flags & DRM_MODE_FB_MODIFIERS))
3215 if (r->handles[i]) {
3216 DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i);
3220 if (r->pitches[i]) {
3221 DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i);
3225 if (r->offsets[i]) {
3226 DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i);
3234 static struct drm_framebuffer *
3235 internal_framebuffer_create(struct drm_device *dev,
3236 struct drm_mode_fb_cmd2 *r,
3237 struct drm_file *file_priv)
3239 struct drm_mode_config *config = &dev->mode_config;
3240 struct drm_framebuffer *fb;
3243 if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
3244 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
3245 return ERR_PTR(-EINVAL);
3248 if ((config->min_width > r->width) || (r->width > config->max_width)) {
3249 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3250 r->width, config->min_width, config->max_width);
3251 return ERR_PTR(-EINVAL);
3253 if ((config->min_height > r->height) || (r->height > config->max_height)) {
3254 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3255 r->height, config->min_height, config->max_height);
3256 return ERR_PTR(-EINVAL);
3259 if (r->flags & DRM_MODE_FB_MODIFIERS &&
3260 !dev->mode_config.allow_fb_modifiers) {
3261 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3262 return ERR_PTR(-EINVAL);
3265 ret = framebuffer_check(r);
3267 return ERR_PTR(ret);
3269 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
3271 DRM_DEBUG_KMS("could not create framebuffer\n");
3279 * drm_mode_addfb2 - add an FB to the graphics configuration
3280 * @dev: drm device for the ioctl
3281 * @data: data pointer for the ioctl
3282 * @file_priv: drm file for the ioctl call
3284 * Add a new FB to the specified CRTC, given a user request with format. This is
3285 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3286 * and uses fourcc codes as pixel format specifiers.
3288 * Called by the user via ioctl.
3291 * Zero on success, negative errno on failure.
3293 int drm_mode_addfb2(struct drm_device *dev,
3294 void *data, struct drm_file *file_priv)
3296 struct drm_mode_fb_cmd2 *r = data;
3297 struct drm_framebuffer *fb;
3299 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3302 fb = internal_framebuffer_create(dev, r, file_priv);
3306 /* Transfer ownership to the filp for reaping on close */
3308 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3309 mutex_lock(&file_priv->fbs_lock);
3310 r->fb_id = fb->base.id;
3311 list_add(&fb->filp_head, &file_priv->fbs);
3312 mutex_unlock(&file_priv->fbs_lock);
3317 struct drm_mode_rmfb_work {
3318 struct work_struct work;
3319 struct list_head fbs;
3322 static void drm_mode_rmfb_work_fn(struct work_struct *w)
3324 struct drm_mode_rmfb_work *arg = container_of(w, typeof(*arg), work);
3326 while (!list_empty(&arg->fbs)) {
3327 struct drm_framebuffer *fb =
3328 list_first_entry(&arg->fbs, typeof(*fb), filp_head);
3330 list_del_init(&fb->filp_head);
3331 drm_framebuffer_remove(fb);
3336 * drm_mode_rmfb - remove an FB from the configuration
3337 * @dev: drm device for the ioctl
3338 * @data: data pointer for the ioctl
3339 * @file_priv: drm file for the ioctl call
3341 * Remove the FB specified by the user.
3343 * Called by the user via ioctl.
3346 * Zero on success, negative errno on failure.
3348 int drm_mode_rmfb(struct drm_device *dev,
3349 void *data, struct drm_file *file_priv)
3351 struct drm_framebuffer *fb = NULL;
3352 struct drm_framebuffer *fbl = NULL;
3353 uint32_t *id = data;
3356 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3359 mutex_lock(&file_priv->fbs_lock);
3360 mutex_lock(&dev->mode_config.fb_lock);
3361 fb = __drm_framebuffer_lookup(dev, *id);
3365 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3371 list_del_init(&fb->filp_head);
3372 mutex_unlock(&dev->mode_config.fb_lock);
3373 mutex_unlock(&file_priv->fbs_lock);
3376 * we now own the reference that was stored in the fbs list
3378 * drm_framebuffer_remove may fail with -EINTR on pending signals,
3379 * so run this in a separate stack as there's no way to correctly
3380 * handle this after the fb is already removed from the lookup table.
3382 if (atomic_read(&fb->refcount.refcount) > 1) {
3383 struct drm_mode_rmfb_work arg;
3385 INIT_WORK_ONSTACK(&arg.work, drm_mode_rmfb_work_fn);
3386 INIT_LIST_HEAD(&arg.fbs);
3387 list_add_tail(&fb->filp_head, &arg.fbs);
3389 schedule_work(&arg.work);
3390 flush_work(&arg.work);
3391 destroy_work_on_stack(&arg.work);
3393 drm_framebuffer_unreference(fb);
3398 mutex_unlock(&dev->mode_config.fb_lock);
3399 mutex_unlock(&file_priv->fbs_lock);
3405 * drm_mode_getfb - get FB info
3406 * @dev: drm device for the ioctl
3407 * @data: data pointer for the ioctl
3408 * @file_priv: drm file for the ioctl call
3410 * Lookup the FB given its ID and return info about it.
3412 * Called by the user via ioctl.
3415 * Zero on success, negative errno on failure.
3417 int drm_mode_getfb(struct drm_device *dev,
3418 void *data, struct drm_file *file_priv)
3420 struct drm_mode_fb_cmd *r = data;
3421 struct drm_framebuffer *fb;
3424 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3427 fb = drm_framebuffer_lookup(dev, r->fb_id);
3431 r->height = fb->height;
3432 r->width = fb->width;
3433 r->depth = fb->depth;
3434 r->bpp = fb->bits_per_pixel;
3435 r->pitch = fb->pitches[0];
3436 if (fb->funcs->create_handle) {
3437 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
3438 drm_is_control_client(file_priv)) {
3439 ret = fb->funcs->create_handle(fb, file_priv,
3442 /* GET_FB() is an unprivileged ioctl so we must not
3443 * return a buffer-handle to non-master processes! For
3444 * backwards-compatibility reasons, we cannot make
3445 * GET_FB() privileged, so just return an invalid handle
3446 * for non-masters. */
3454 drm_framebuffer_unreference(fb);
3460 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3461 * @dev: drm device for the ioctl
3462 * @data: data pointer for the ioctl
3463 * @file_priv: drm file for the ioctl call
3465 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3466 * rectangle list. Generic userspace which does frontbuffer rendering must call
3467 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3468 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3470 * Modesetting drivers which always update the frontbuffer do not need to
3471 * implement the corresponding ->dirty framebuffer callback.
3473 * Called by the user via ioctl.
3476 * Zero on success, negative errno on failure.
3478 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3479 void *data, struct drm_file *file_priv)
3481 struct drm_clip_rect __user *clips_ptr;
3482 struct drm_clip_rect *clips = NULL;
3483 struct drm_mode_fb_dirty_cmd *r = data;
3484 struct drm_framebuffer *fb;
3489 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3492 fb = drm_framebuffer_lookup(dev, r->fb_id);
3496 num_clips = r->num_clips;
3497 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3499 if (!num_clips != !clips_ptr) {
3504 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3506 /* If userspace annotates copy, clips must come in pairs */
3507 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3512 if (num_clips && clips_ptr) {
3513 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3517 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
3523 ret = copy_from_user(clips, clips_ptr,
3524 num_clips * sizeof(*clips));
3531 if (fb->funcs->dirty) {
3532 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3541 drm_framebuffer_unreference(fb);
3547 * drm_fb_release - remove and free the FBs on this file
3548 * @priv: drm file for the ioctl
3550 * Destroy all the FBs associated with @filp.
3552 * Called by the user via ioctl.
3555 * Zero on success, negative errno on failure.
3557 void drm_fb_release(struct drm_file *priv)
3559 struct drm_framebuffer *fb, *tfb;
3560 struct drm_mode_rmfb_work arg;
3562 INIT_LIST_HEAD(&arg.fbs);
3565 * When the file gets released that means no one else can access the fb
3566 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3567 * avoid upsetting lockdep since the universal cursor code adds a
3568 * framebuffer while holding mutex locks.
3570 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3571 * locks is impossible here since no one else but this function can get
3574 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3575 if (atomic_read(&fb->refcount.refcount) > 1) {
3576 list_move_tail(&fb->filp_head, &arg.fbs);
3578 list_del_init(&fb->filp_head);
3580 /* This drops the fpriv->fbs reference. */
3581 drm_framebuffer_unreference(fb);
3585 if (!list_empty(&arg.fbs)) {
3586 INIT_WORK_ONSTACK(&arg.work, drm_mode_rmfb_work_fn);
3588 schedule_work(&arg.work);
3589 flush_work(&arg.work);
3590 destroy_work_on_stack(&arg.work);
3595 * drm_property_create - create a new property type
3597 * @flags: flags specifying the property type
3598 * @name: name of the property
3599 * @num_values: number of pre-defined values
3601 * This creates a new generic drm property which can then be attached to a drm
3602 * object with drm_object_attach_property. The returned property object must be
3603 * freed with drm_property_destroy.
3605 * Note that the DRM core keeps a per-device list of properties and that, if
3606 * drm_mode_config_cleanup() is called, it will destroy all properties created
3610 * A pointer to the newly created property on success, NULL on failure.
3612 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3613 const char *name, int num_values)
3615 struct drm_property *property = NULL;
3618 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3622 property->dev = dev;
3625 property->values = kcalloc(num_values, sizeof(uint64_t),
3627 if (!property->values)
3631 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3635 property->flags = flags;
3636 property->num_values = num_values;
3637 INIT_LIST_HEAD(&property->enum_list);
3640 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3641 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3644 list_add_tail(&property->head, &dev->mode_config.property_list);
3646 WARN_ON(!drm_property_type_valid(property));
3650 kfree(property->values);
3654 EXPORT_SYMBOL(drm_property_create);
3657 * drm_property_create_enum - create a new enumeration property type
3659 * @flags: flags specifying the property type
3660 * @name: name of the property
3661 * @props: enumeration lists with property values
3662 * @num_values: number of pre-defined values
3664 * This creates a new generic drm property which can then be attached to a drm
3665 * object with drm_object_attach_property. The returned property object must be
3666 * freed with drm_property_destroy.
3668 * Userspace is only allowed to set one of the predefined values for enumeration
3672 * A pointer to the newly created property on success, NULL on failure.
3674 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3676 const struct drm_prop_enum_list *props,
3679 struct drm_property *property;
3682 flags |= DRM_MODE_PROP_ENUM;
3684 property = drm_property_create(dev, flags, name, num_values);
3688 for (i = 0; i < num_values; i++) {
3689 ret = drm_property_add_enum(property, i,
3693 drm_property_destroy(dev, property);
3700 EXPORT_SYMBOL(drm_property_create_enum);
3703 * drm_property_create_bitmask - create a new bitmask property type
3705 * @flags: flags specifying the property type
3706 * @name: name of the property
3707 * @props: enumeration lists with property bitflags
3708 * @num_props: size of the @props array
3709 * @supported_bits: bitmask of all supported enumeration values
3711 * This creates a new bitmask drm property which can then be attached to a drm
3712 * object with drm_object_attach_property. The returned property object must be
3713 * freed with drm_property_destroy.
3715 * Compared to plain enumeration properties userspace is allowed to set any
3716 * or'ed together combination of the predefined property bitflag values
3719 * A pointer to the newly created property on success, NULL on failure.
3721 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3722 int flags, const char *name,
3723 const struct drm_prop_enum_list *props,
3725 uint64_t supported_bits)
3727 struct drm_property *property;
3728 int i, ret, index = 0;
3729 int num_values = hweight64(supported_bits);
3731 flags |= DRM_MODE_PROP_BITMASK;
3733 property = drm_property_create(dev, flags, name, num_values);
3736 for (i = 0; i < num_props; i++) {
3737 if (!(supported_bits & (1ULL << props[i].type)))
3740 if (WARN_ON(index >= num_values)) {
3741 drm_property_destroy(dev, property);
3745 ret = drm_property_add_enum(property, index++,
3749 drm_property_destroy(dev, property);
3756 EXPORT_SYMBOL(drm_property_create_bitmask);
3758 static struct drm_property *property_create_range(struct drm_device *dev,
3759 int flags, const char *name,
3760 uint64_t min, uint64_t max)
3762 struct drm_property *property;
3764 property = drm_property_create(dev, flags, name, 2);
3768 property->values[0] = min;
3769 property->values[1] = max;
3775 * drm_property_create_range - create a new unsigned ranged property type
3777 * @flags: flags specifying the property type
3778 * @name: name of the property
3779 * @min: minimum value of the property
3780 * @max: maximum value of the property
3782 * This creates a new generic drm property which can then be attached to a drm
3783 * object with drm_object_attach_property. The returned property object must be
3784 * freed with drm_property_destroy.
3786 * Userspace is allowed to set any unsigned integer value in the (min, max)
3790 * A pointer to the newly created property on success, NULL on failure.
3792 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3794 uint64_t min, uint64_t max)
3796 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3799 EXPORT_SYMBOL(drm_property_create_range);
3802 * drm_property_create_signed_range - create a new signed ranged property type
3804 * @flags: flags specifying the property type
3805 * @name: name of the property
3806 * @min: minimum value of the property
3807 * @max: maximum value of the property
3809 * This creates a new generic drm property which can then be attached to a drm
3810 * object with drm_object_attach_property. The returned property object must be
3811 * freed with drm_property_destroy.
3813 * Userspace is allowed to set any signed integer value in the (min, max)
3817 * A pointer to the newly created property on success, NULL on failure.
3819 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3820 int flags, const char *name,
3821 int64_t min, int64_t max)
3823 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3824 name, I642U64(min), I642U64(max));
3826 EXPORT_SYMBOL(drm_property_create_signed_range);
3829 * drm_property_create_object - create a new object property type
3831 * @flags: flags specifying the property type
3832 * @name: name of the property
3833 * @type: object type from DRM_MODE_OBJECT_* defines
3835 * This creates a new generic drm property which can then be attached to a drm
3836 * object with drm_object_attach_property. The returned property object must be
3837 * freed with drm_property_destroy.
3839 * Userspace is only allowed to set this to any property value of the given
3840 * @type. Only useful for atomic properties, which is enforced.
3843 * A pointer to the newly created property on success, NULL on failure.
3845 struct drm_property *drm_property_create_object(struct drm_device *dev,
3846 int flags, const char *name, uint32_t type)
3848 struct drm_property *property;
3850 flags |= DRM_MODE_PROP_OBJECT;
3852 if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
3855 property = drm_property_create(dev, flags, name, 1);
3859 property->values[0] = type;
3863 EXPORT_SYMBOL(drm_property_create_object);
3866 * drm_property_create_bool - create a new boolean property type
3868 * @flags: flags specifying the property type
3869 * @name: name of the property
3871 * This creates a new generic drm property which can then be attached to a drm
3872 * object with drm_object_attach_property. The returned property object must be
3873 * freed with drm_property_destroy.
3875 * This is implemented as a ranged property with only {0, 1} as valid values.
3878 * A pointer to the newly created property on success, NULL on failure.
3880 struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
3883 return drm_property_create_range(dev, flags, name, 0, 1);
3885 EXPORT_SYMBOL(drm_property_create_bool);
3888 * drm_property_add_enum - add a possible value to an enumeration property
3889 * @property: enumeration property to change
3890 * @index: index of the new enumeration
3891 * @value: value of the new enumeration
3892 * @name: symbolic name of the new enumeration
3894 * This functions adds enumerations to a property.
3896 * It's use is deprecated, drivers should use one of the more specific helpers
3897 * to directly create the property with all enumerations already attached.
3900 * Zero on success, error code on failure.
3902 int drm_property_add_enum(struct drm_property *property, int index,
3903 uint64_t value, const char *name)
3905 struct drm_property_enum *prop_enum;
3907 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3908 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
3912 * Bitmask enum properties have the additional constraint of values
3915 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3919 if (!list_empty(&property->enum_list)) {
3920 list_for_each_entry(prop_enum, &property->enum_list, head) {
3921 if (prop_enum->value == value) {
3922 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3923 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3929 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3933 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3934 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3935 prop_enum->value = value;
3937 property->values[index] = value;
3938 list_add_tail(&prop_enum->head, &property->enum_list);
3941 EXPORT_SYMBOL(drm_property_add_enum);
3944 * drm_property_destroy - destroy a drm property
3946 * @property: property to destry
3948 * This function frees a property including any attached resources like
3949 * enumeration values.
3951 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3953 struct drm_property_enum *prop_enum, *pt;
3955 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
3956 list_del(&prop_enum->head);
3960 if (property->num_values)
3961 kfree(property->values);
3962 drm_mode_object_put(dev, &property->base);
3963 list_del(&property->head);
3966 EXPORT_SYMBOL(drm_property_destroy);
3969 * drm_object_attach_property - attach a property to a modeset object
3970 * @obj: drm modeset object
3971 * @property: property to attach
3972 * @init_val: initial value of the property
3974 * This attaches the given property to the modeset object with the given initial
3975 * value. Currently this function cannot fail since the properties are stored in
3976 * a statically sized array.
3978 void drm_object_attach_property(struct drm_mode_object *obj,
3979 struct drm_property *property,
3982 int count = obj->properties->count;
3984 if (count == DRM_OBJECT_MAX_PROPERTY) {
3985 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3986 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3987 "you see this message on the same object type.\n",
3992 obj->properties->properties[count] = property;
3993 obj->properties->values[count] = init_val;
3994 obj->properties->count++;
3995 if (property->flags & DRM_MODE_PROP_ATOMIC)
3996 obj->properties->atomic_count++;
3998 EXPORT_SYMBOL(drm_object_attach_property);
4001 * drm_object_property_set_value - set the value of a property
4002 * @obj: drm mode object to set property value for
4003 * @property: property to set
4004 * @val: value the property should be set to
4006 * This functions sets a given property on a given object. This function only
4007 * changes the software state of the property, it does not call into the
4008 * driver's ->set_property callback.
4011 * Zero on success, error code on failure.
4013 int drm_object_property_set_value(struct drm_mode_object *obj,
4014 struct drm_property *property, uint64_t val)
4018 for (i = 0; i < obj->properties->count; i++) {
4019 if (obj->properties->properties[i] == property) {
4020 obj->properties->values[i] = val;
4027 EXPORT_SYMBOL(drm_object_property_set_value);
4030 * drm_object_property_get_value - retrieve the value of a property
4031 * @obj: drm mode object to get property value from
4032 * @property: property to retrieve
4033 * @val: storage for the property value
4035 * This function retrieves the softare state of the given property for the given
4036 * property. Since there is no driver callback to retrieve the current property
4037 * value this might be out of sync with the hardware, depending upon the driver
4041 * Zero on success, error code on failure.
4043 int drm_object_property_get_value(struct drm_mode_object *obj,
4044 struct drm_property *property, uint64_t *val)
4048 /* read-only properties bypass atomic mechanism and still store
4049 * their value in obj->properties->values[].. mostly to avoid
4050 * having to deal w/ EDID and similar props in atomic paths:
4052 if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
4053 !(property->flags & DRM_MODE_PROP_IMMUTABLE))
4054 return drm_atomic_get_property(obj, property, val);
4056 for (i = 0; i < obj->properties->count; i++) {
4057 if (obj->properties->properties[i] == property) {
4058 *val = obj->properties->values[i];
4065 EXPORT_SYMBOL(drm_object_property_get_value);
4068 * drm_mode_getproperty_ioctl - get the property metadata
4071 * @file_priv: DRM file info
4073 * This function retrieves the metadata for a given property, like the different
4074 * possible values for an enum property or the limits for a range property.
4076 * Blob properties are special
4078 * Called by the user via ioctl.
4081 * Zero on success, negative errno on failure.
4083 int drm_mode_getproperty_ioctl(struct drm_device *dev,
4084 void *data, struct drm_file *file_priv)
4086 struct drm_mode_get_property *out_resp = data;
4087 struct drm_property *property;
4089 int value_count = 0;
4092 struct drm_property_enum *prop_enum;
4093 struct drm_mode_property_enum __user *enum_ptr;
4094 uint64_t __user *values_ptr;
4096 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4099 drm_modeset_lock_all(dev);
4100 property = drm_property_find(dev, out_resp->prop_id);
4106 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4107 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4108 list_for_each_entry(prop_enum, &property->enum_list, head)
4112 value_count = property->num_values;
4114 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
4115 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
4116 out_resp->flags = property->flags;
4118 if ((out_resp->count_values >= value_count) && value_count) {
4119 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
4120 for (i = 0; i < value_count; i++) {
4121 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
4127 out_resp->count_values = value_count;
4129 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4130 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4131 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
4133 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
4134 list_for_each_entry(prop_enum, &property->enum_list, head) {
4136 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
4141 if (copy_to_user(&enum_ptr[copied].name,
4142 &prop_enum->name, DRM_PROP_NAME_LEN)) {
4149 out_resp->count_enum_blobs = enum_count;
4153 * NOTE: The idea seems to have been to use this to read all the blob
4154 * property values. But nothing ever added them to the corresponding
4155 * list, userspace always used the special-purpose get_blob ioctl to
4156 * read the value for a blob property. It also doesn't make a lot of
4157 * sense to return values here when everything else is just metadata for
4158 * the property itself.
4160 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4161 out_resp->count_enum_blobs = 0;
4163 drm_modeset_unlock_all(dev);
4168 * drm_property_create_blob - Create new blob property
4170 * Creates a new blob property for a specified DRM device, optionally
4173 * @dev: DRM device to create property for
4174 * @length: Length to allocate for blob data
4175 * @data: If specified, copies data into blob
4178 * New blob property with a single reference on success, or an ERR_PTR
4181 struct drm_property_blob *
4182 drm_property_create_blob(struct drm_device *dev, size_t length,
4185 struct drm_property_blob *blob;
4188 if (!length || length > ULONG_MAX - sizeof(struct drm_property_blob))
4189 return ERR_PTR(-EINVAL);
4191 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
4193 return ERR_PTR(-ENOMEM);
4195 /* This must be explicitly initialised, so we can safely call list_del
4196 * on it in the removal handler, even if it isn't in a file list. */
4197 INIT_LIST_HEAD(&blob->head_file);
4198 blob->length = length;
4202 memcpy(blob->data, data, length);
4204 mutex_lock(&dev->mode_config.blob_lock);
4206 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
4209 mutex_unlock(&dev->mode_config.blob_lock);
4210 return ERR_PTR(-EINVAL);
4213 kref_init(&blob->refcount);
4215 list_add_tail(&blob->head_global,
4216 &dev->mode_config.property_blob_list);
4218 mutex_unlock(&dev->mode_config.blob_lock);
4222 EXPORT_SYMBOL(drm_property_create_blob);
4225 * drm_property_free_blob - Blob property destructor
4227 * Internal free function for blob properties; must not be used directly.
4231 static void drm_property_free_blob(struct kref *kref)
4233 struct drm_property_blob *blob =
4234 container_of(kref, struct drm_property_blob, refcount);
4236 WARN_ON(!mutex_is_locked(&blob->dev->mode_config.blob_lock));
4238 list_del(&blob->head_global);
4239 list_del(&blob->head_file);
4240 drm_mode_object_put(blob->dev, &blob->base);
4246 * drm_property_unreference_blob - Unreference a blob property
4248 * Drop a reference on a blob property. May free the object.
4250 * @blob: Pointer to blob property
4252 void drm_property_unreference_blob(struct drm_property_blob *blob)
4254 struct drm_device *dev;
4261 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4263 if (kref_put_mutex(&blob->refcount, drm_property_free_blob,
4264 &dev->mode_config.blob_lock))
4265 mutex_unlock(&dev->mode_config.blob_lock);
4267 might_lock(&dev->mode_config.blob_lock);
4269 EXPORT_SYMBOL(drm_property_unreference_blob);
4272 * drm_property_unreference_blob_locked - Unreference a blob property with blob_lock held
4274 * Drop a reference on a blob property. May free the object. This must be
4275 * called with blob_lock held.
4277 * @blob: Pointer to blob property
4279 static void drm_property_unreference_blob_locked(struct drm_property_blob *blob)
4284 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4286 kref_put(&blob->refcount, drm_property_free_blob);
4290 * drm_property_destroy_user_blobs - destroy all blobs created by this client
4292 * @file_priv: destroy all blobs owned by this file handle
4294 void drm_property_destroy_user_blobs(struct drm_device *dev,
4295 struct drm_file *file_priv)
4297 struct drm_property_blob *blob, *bt;
4299 mutex_lock(&dev->mode_config.blob_lock);
4301 list_for_each_entry_safe(blob, bt, &file_priv->blobs, head_file) {
4302 list_del_init(&blob->head_file);
4303 drm_property_unreference_blob_locked(blob);
4306 mutex_unlock(&dev->mode_config.blob_lock);
4310 * drm_property_reference_blob - Take a reference on an existing property
4312 * Take a new reference on an existing blob property.
4314 * @blob: Pointer to blob property
4316 struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob)
4318 DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
4319 kref_get(&blob->refcount);
4322 EXPORT_SYMBOL(drm_property_reference_blob);
4325 * Like drm_property_lookup_blob, but does not return an additional reference.
4326 * Must be called with blob_lock held.
4328 static struct drm_property_blob *__drm_property_lookup_blob(struct drm_device *dev,
4331 struct drm_mode_object *obj = NULL;
4332 struct drm_property_blob *blob;
4334 WARN_ON(!mutex_is_locked(&dev->mode_config.blob_lock));
4336 mutex_lock(&dev->mode_config.idr_mutex);
4337 obj = idr_find(&dev->mode_config.crtc_idr, id);
4338 if (!obj || (obj->type != DRM_MODE_OBJECT_BLOB) || (obj->id != id))
4341 blob = obj_to_blob(obj);
4342 mutex_unlock(&dev->mode_config.idr_mutex);
4348 * drm_property_lookup_blob - look up a blob property and take a reference
4350 * @id: id of the blob property
4352 * If successful, this takes an additional reference to the blob property.
4353 * callers need to make sure to eventually unreference the returned property
4354 * again, using @drm_property_unreference_blob.
4356 struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
4359 struct drm_property_blob *blob;
4361 mutex_lock(&dev->mode_config.blob_lock);
4362 blob = __drm_property_lookup_blob(dev, id);
4364 if (!kref_get_unless_zero(&blob->refcount))
4367 mutex_unlock(&dev->mode_config.blob_lock);
4371 EXPORT_SYMBOL(drm_property_lookup_blob);
4374 * drm_property_replace_global_blob - atomically replace existing blob property
4376 * @replace: location of blob property pointer to be replaced
4377 * @length: length of data for new blob, or 0 for no data
4378 * @data: content for new blob, or NULL for no data
4379 * @obj_holds_id: optional object for property holding blob ID
4380 * @prop_holds_id: optional property holding blob ID
4381 * @return 0 on success or error on failure
4383 * This function will atomically replace a global property in the blob list,
4384 * optionally updating a property which holds the ID of that property. It is
4385 * guaranteed to be atomic: no caller will be allowed to see intermediate
4386 * results, and either the entire operation will succeed and clean up the
4387 * previous property, or it will fail and the state will be unchanged.
4389 * If length is 0 or data is NULL, no new blob will be created, and the holding
4390 * property, if specified, will be set to 0.
4392 * Access to the replace pointer is assumed to be protected by the caller, e.g.
4393 * by holding the relevant modesetting object lock for its parent.
4395 * For example, a drm_connector has a 'PATH' property, which contains the ID
4396 * of a blob property with the value of the MST path information. Calling this
4397 * function with replace pointing to the connector's path_blob_ptr, length and
4398 * data set for the new path information, obj_holds_id set to the connector's
4399 * base object, and prop_holds_id set to the path property name, will perform
4400 * a completely atomic update. The access to path_blob_ptr is protected by the
4401 * caller holding a lock on the connector.
4403 static int drm_property_replace_global_blob(struct drm_device *dev,
4404 struct drm_property_blob **replace,
4407 struct drm_mode_object *obj_holds_id,
4408 struct drm_property *prop_holds_id)
4410 struct drm_property_blob *new_blob = NULL;
4411 struct drm_property_blob *old_blob = NULL;
4414 WARN_ON(replace == NULL);
4416 old_blob = *replace;
4418 if (length && data) {
4419 new_blob = drm_property_create_blob(dev, length, data);
4420 if (IS_ERR(new_blob))
4421 return PTR_ERR(new_blob);
4424 /* This does not need to be synchronised with blob_lock, as the
4425 * get_properties ioctl locks all modesetting objects, and
4426 * obj_holds_id must be locked before calling here, so we cannot
4427 * have its value out of sync with the list membership modified
4428 * below under blob_lock. */
4430 ret = drm_object_property_set_value(obj_holds_id,
4433 new_blob->base.id : 0);
4438 drm_property_unreference_blob(old_blob);
4439 *replace = new_blob;
4444 drm_property_unreference_blob(new_blob);
4449 * drm_mode_getblob_ioctl - get the contents of a blob property value
4452 * @file_priv: DRM file info
4454 * This function retrieves the contents of a blob property. The value stored in
4455 * an object's blob property is just a normal modeset object id.
4457 * Called by the user via ioctl.
4460 * Zero on success, negative errno on failure.
4462 int drm_mode_getblob_ioctl(struct drm_device *dev,
4463 void *data, struct drm_file *file_priv)
4465 struct drm_mode_get_blob *out_resp = data;
4466 struct drm_property_blob *blob;
4468 void __user *blob_ptr;
4470 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4473 drm_modeset_lock_all(dev);
4474 mutex_lock(&dev->mode_config.blob_lock);
4475 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
4481 if (out_resp->length == blob->length) {
4482 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4483 if (copy_to_user(blob_ptr, blob->data, blob->length)) {
4488 out_resp->length = blob->length;
4491 mutex_unlock(&dev->mode_config.blob_lock);
4492 drm_modeset_unlock_all(dev);
4497 * drm_mode_createblob_ioctl - create a new blob property
4500 * @file_priv: DRM file info
4502 * This function creates a new blob property with user-defined values. In order
4503 * to give us sensible validation and checking when creating, rather than at
4504 * every potential use, we also require a type to be provided upfront.
4506 * Called by the user via ioctl.
4509 * Zero on success, negative errno on failure.
4511 int drm_mode_createblob_ioctl(struct drm_device *dev,
4512 void *data, struct drm_file *file_priv)
4514 struct drm_mode_create_blob *out_resp = data;
4515 struct drm_property_blob *blob;
4516 void __user *blob_ptr;
4519 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4522 blob = drm_property_create_blob(dev, out_resp->length, NULL);
4524 return PTR_ERR(blob);
4526 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4527 if (copy_from_user(blob->data, blob_ptr, out_resp->length)) {
4532 /* Dropping the lock between create_blob and our access here is safe
4533 * as only the same file_priv can remove the blob; at this point, it is
4534 * not associated with any file_priv. */
4535 mutex_lock(&dev->mode_config.blob_lock);
4536 out_resp->blob_id = blob->base.id;
4537 list_add_tail(&blob->head_file, &file_priv->blobs);
4538 mutex_unlock(&dev->mode_config.blob_lock);
4543 drm_property_unreference_blob(blob);
4548 * drm_mode_destroyblob_ioctl - destroy a user blob property
4551 * @file_priv: DRM file info
4553 * Destroy an existing user-defined blob property.
4555 * Called by the user via ioctl.
4558 * Zero on success, negative errno on failure.
4560 int drm_mode_destroyblob_ioctl(struct drm_device *dev,
4561 void *data, struct drm_file *file_priv)
4563 struct drm_mode_destroy_blob *out_resp = data;
4564 struct drm_property_blob *blob = NULL, *bt;
4568 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4571 mutex_lock(&dev->mode_config.blob_lock);
4572 blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
4578 /* Ensure the property was actually created by this user. */
4579 list_for_each_entry(bt, &file_priv->blobs, head_file) {
4591 /* We must drop head_file here, because we may not be the last
4592 * reference on the blob. */
4593 list_del_init(&blob->head_file);
4594 drm_property_unreference_blob_locked(blob);
4595 mutex_unlock(&dev->mode_config.blob_lock);
4600 mutex_unlock(&dev->mode_config.blob_lock);
4605 * drm_mode_connector_set_path_property - set tile property on connector
4606 * @connector: connector to set property on.
4607 * @path: path to use for property; must not be NULL.
4609 * This creates a property to expose to userspace to specify a
4610 * connector path. This is mainly used for DisplayPort MST where
4611 * connectors have a topology and we want to allow userspace to give
4612 * them more meaningful names.
4615 * Zero on success, negative errno on failure.
4617 int drm_mode_connector_set_path_property(struct drm_connector *connector,
4620 struct drm_device *dev = connector->dev;
4623 ret = drm_property_replace_global_blob(dev,
4624 &connector->path_blob_ptr,
4628 dev->mode_config.path_property);
4631 EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4634 * drm_mode_connector_set_tile_property - set tile property on connector
4635 * @connector: connector to set property on.
4637 * This looks up the tile information for a connector, and creates a
4638 * property for userspace to parse if it exists. The property is of
4639 * the form of 8 integers using ':' as a separator.
4642 * Zero on success, errno on failure.
4644 int drm_mode_connector_set_tile_property(struct drm_connector *connector)
4646 struct drm_device *dev = connector->dev;
4650 if (!connector->has_tile) {
4651 ret = drm_property_replace_global_blob(dev,
4652 &connector->tile_blob_ptr,
4656 dev->mode_config.tile_property);
4660 snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4661 connector->tile_group->id, connector->tile_is_single_monitor,
4662 connector->num_h_tile, connector->num_v_tile,
4663 connector->tile_h_loc, connector->tile_v_loc,
4664 connector->tile_h_size, connector->tile_v_size);
4666 ret = drm_property_replace_global_blob(dev,
4667 &connector->tile_blob_ptr,
4671 dev->mode_config.tile_property);
4674 EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
4677 * drm_mode_connector_update_edid_property - update the edid property of a connector
4678 * @connector: drm connector
4679 * @edid: new value of the edid property
4681 * This function creates a new blob modeset object and assigns its id to the
4682 * connector's edid property.
4685 * Zero on success, negative errno on failure.
4687 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4688 const struct edid *edid)
4690 struct drm_device *dev = connector->dev;
4694 /* ignore requests to set edid when overridden */
4695 if (connector->override_edid)
4699 size = EDID_LENGTH * (1 + edid->extensions);
4701 ret = drm_property_replace_global_blob(dev,
4702 &connector->edid_blob_ptr,
4706 dev->mode_config.edid_property);
4709 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4711 /* Some properties could refer to dynamic refcnt'd objects, or things that
4712 * need special locking to handle lifetime issues (ie. to ensure the prop
4713 * value doesn't become invalid part way through the property update due to
4714 * race). The value returned by reference via 'obj' should be passed back
4715 * to drm_property_change_valid_put() after the property is set (and the
4716 * object to which the property is attached has a chance to take it's own
4719 bool drm_property_change_valid_get(struct drm_property *property,
4720 uint64_t value, struct drm_mode_object **ref)
4724 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4729 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
4730 if (value < property->values[0] || value > property->values[1])
4733 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4734 int64_t svalue = U642I64(value);
4736 if (svalue < U642I64(property->values[0]) ||
4737 svalue > U642I64(property->values[1]))
4740 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4741 uint64_t valid_mask = 0;
4743 for (i = 0; i < property->num_values; i++)
4744 valid_mask |= (1ULL << property->values[i]);
4745 return !(value & ~valid_mask);
4746 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
4747 struct drm_property_blob *blob;
4752 blob = drm_property_lookup_blob(property->dev, value);
4759 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4760 /* a zero value for an object property translates to null: */
4764 /* handle refcnt'd objects specially: */
4765 if (property->values[0] == DRM_MODE_OBJECT_FB) {
4766 struct drm_framebuffer *fb;
4767 fb = drm_framebuffer_lookup(property->dev, value);
4775 return _object_find(property->dev, value, property->values[0]) != NULL;
4779 for (i = 0; i < property->num_values; i++)
4780 if (property->values[i] == value)
4785 void drm_property_change_valid_put(struct drm_property *property,
4786 struct drm_mode_object *ref)
4791 if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4792 if (property->values[0] == DRM_MODE_OBJECT_FB)
4793 drm_framebuffer_unreference(obj_to_fb(ref));
4794 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4795 drm_property_unreference_blob(obj_to_blob(ref));
4799 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4802 * @file_priv: DRM file info
4804 * This function sets the current value for a connectors's property. It also
4805 * calls into a driver's ->set_property callback to update the hardware state
4807 * Called by the user via ioctl.
4810 * Zero on success, negative errno on failure.
4812 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4813 void *data, struct drm_file *file_priv)
4815 struct drm_mode_connector_set_property *conn_set_prop = data;
4816 struct drm_mode_obj_set_property obj_set_prop = {
4817 .value = conn_set_prop->value,
4818 .prop_id = conn_set_prop->prop_id,
4819 .obj_id = conn_set_prop->connector_id,
4820 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4823 /* It does all the locking and checking we need */
4824 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
4827 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4828 struct drm_property *property,
4832 struct drm_connector *connector = obj_to_connector(obj);
4834 /* Do DPMS ourselves */
4835 if (property == connector->dev->mode_config.dpms_property) {
4837 if (connector->funcs->dpms)
4838 ret = (*connector->funcs->dpms)(connector, (int)value);
4839 } else if (connector->funcs->set_property)
4840 ret = connector->funcs->set_property(connector, property, value);
4842 /* store the property value if successful */
4844 drm_object_property_set_value(&connector->base, property, value);
4848 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4849 struct drm_property *property,
4853 struct drm_crtc *crtc = obj_to_crtc(obj);
4855 if (crtc->funcs->set_property)
4856 ret = crtc->funcs->set_property(crtc, property, value);
4858 drm_object_property_set_value(obj, property, value);
4864 * drm_mode_plane_set_obj_prop - set the value of a property
4865 * @plane: drm plane object to set property value for
4866 * @property: property to set
4867 * @value: value the property should be set to
4869 * This functions sets a given property on a given plane object. This function
4870 * calls the driver's ->set_property callback and changes the software state of
4871 * the property if the callback succeeds.
4874 * Zero on success, error code on failure.
4876 int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4877 struct drm_property *property,
4881 struct drm_mode_object *obj = &plane->base;
4883 if (plane->funcs->set_property)
4884 ret = plane->funcs->set_property(plane, property, value);
4886 drm_object_property_set_value(obj, property, value);
4890 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4893 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4896 * @file_priv: DRM file info
4898 * This function retrieves the current value for an object's property. Compared
4899 * to the connector specific ioctl this one is extended to also work on crtc and
4902 * Called by the user via ioctl.
4905 * Zero on success, negative errno on failure.
4907 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4908 struct drm_file *file_priv)
4910 struct drm_mode_obj_get_properties *arg = data;
4911 struct drm_mode_object *obj;
4914 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4917 drm_modeset_lock_all(dev);
4919 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4924 if (!obj->properties) {
4929 ret = get_properties(obj, file_priv->atomic,
4930 (uint32_t __user *)(unsigned long)(arg->props_ptr),
4931 (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
4935 drm_modeset_unlock_all(dev);
4940 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4943 * @file_priv: DRM file info
4945 * This function sets the current value for an object's property. It also calls
4946 * into a driver's ->set_property callback to update the hardware state.
4947 * Compared to the connector specific ioctl this one is extended to also work on
4948 * crtc and plane objects.
4950 * Called by the user via ioctl.
4953 * Zero on success, negative errno on failure.
4955 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4956 struct drm_file *file_priv)
4958 struct drm_mode_obj_set_property *arg = data;
4959 struct drm_mode_object *arg_obj;
4960 struct drm_mode_object *prop_obj;
4961 struct drm_property *property;
4962 int i, ret = -EINVAL;
4963 struct drm_mode_object *ref;
4965 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4968 drm_modeset_lock_all(dev);
4970 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4975 if (!arg_obj->properties)
4978 for (i = 0; i < arg_obj->properties->count; i++)
4979 if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
4982 if (i == arg_obj->properties->count)
4985 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4986 DRM_MODE_OBJECT_PROPERTY);
4991 property = obj_to_property(prop_obj);
4993 if (!drm_property_change_valid_get(property, arg->value, &ref))
4996 switch (arg_obj->type) {
4997 case DRM_MODE_OBJECT_CONNECTOR:
4998 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
5001 case DRM_MODE_OBJECT_CRTC:
5002 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
5004 case DRM_MODE_OBJECT_PLANE:
5005 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
5006 property, arg->value);
5010 drm_property_change_valid_put(property, ref);
5013 drm_modeset_unlock_all(dev);
5018 * drm_mode_connector_attach_encoder - attach a connector to an encoder
5019 * @connector: connector to attach
5020 * @encoder: encoder to attach @connector to
5022 * This function links up a connector to an encoder. Note that the routing
5023 * restrictions between encoders and crtcs are exposed to userspace through the
5024 * possible_clones and possible_crtcs bitmasks.
5027 * Zero on success, negative errno on failure.
5029 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
5030 struct drm_encoder *encoder)
5034 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
5035 if (connector->encoder_ids[i] == 0) {
5036 connector->encoder_ids[i] = encoder->base.id;
5042 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
5045 * drm_mode_crtc_set_gamma_size - set the gamma table size
5046 * @crtc: CRTC to set the gamma table size for
5047 * @gamma_size: size of the gamma table
5049 * Drivers which support gamma tables should set this to the supported gamma
5050 * table size when initializing the CRTC. Currently the drm core only supports a
5051 * fixed gamma table size.
5054 * Zero on success, negative errno on failure.
5056 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
5059 crtc->gamma_size = gamma_size;
5061 crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
5063 if (!crtc->gamma_store) {
5064 crtc->gamma_size = 0;
5070 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
5073 * drm_mode_gamma_set_ioctl - set the gamma table
5076 * @file_priv: DRM file info
5078 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
5079 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
5081 * Called by the user via ioctl.
5084 * Zero on success, negative errno on failure.
5086 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
5087 void *data, struct drm_file *file_priv)
5089 struct drm_mode_crtc_lut *crtc_lut = data;
5090 struct drm_crtc *crtc;
5091 void *r_base, *g_base, *b_base;
5095 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5098 drm_modeset_lock_all(dev);
5099 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5105 if (crtc->funcs->gamma_set == NULL) {
5110 /* memcpy into gamma store */
5111 if (crtc_lut->gamma_size != crtc->gamma_size) {
5116 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5117 r_base = crtc->gamma_store;
5118 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
5123 g_base = r_base + size;
5124 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
5129 b_base = g_base + size;
5130 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
5135 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
5138 drm_modeset_unlock_all(dev);
5144 * drm_mode_gamma_get_ioctl - get the gamma table
5147 * @file_priv: DRM file info
5149 * Copy the current gamma table into the storage provided. This also provides
5150 * the gamma table size the driver expects, which can be used to size the
5151 * allocated storage.
5153 * Called by the user via ioctl.
5156 * Zero on success, negative errno on failure.
5158 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
5159 void *data, struct drm_file *file_priv)
5161 struct drm_mode_crtc_lut *crtc_lut = data;
5162 struct drm_crtc *crtc;
5163 void *r_base, *g_base, *b_base;
5167 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5170 drm_modeset_lock_all(dev);
5171 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
5177 /* memcpy into gamma store */
5178 if (crtc_lut->gamma_size != crtc->gamma_size) {
5183 size = crtc_lut->gamma_size * (sizeof(uint16_t));
5184 r_base = crtc->gamma_store;
5185 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
5190 g_base = r_base + size;
5191 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
5196 b_base = g_base + size;
5197 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
5202 drm_modeset_unlock_all(dev);
5207 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
5210 * @file_priv: DRM file info
5212 * This schedules an asynchronous update on a given CRTC, called page flip.
5213 * Optionally a drm event is generated to signal the completion of the event.
5214 * Generic drivers cannot assume that a pageflip with changed framebuffer
5215 * properties (including driver specific metadata like tiling layout) will work,
5216 * but some drivers support e.g. pixel format changes through the pageflip
5219 * Called by the user via ioctl.
5222 * Zero on success, negative errno on failure.
5224 int drm_mode_page_flip_ioctl(struct drm_device *dev,
5225 void *data, struct drm_file *file_priv)
5227 struct drm_mode_crtc_page_flip *page_flip = data;
5228 struct drm_crtc *crtc;
5229 struct drm_framebuffer *fb = NULL;
5230 struct drm_pending_vblank_event *e = NULL;
5231 unsigned long flags;
5234 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5237 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
5238 page_flip->reserved != 0)
5241 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
5244 crtc = drm_crtc_find(dev, page_flip->crtc_id);
5248 drm_modeset_lock_crtc(crtc, crtc->primary);
5249 if (crtc->primary->fb == NULL) {
5250 /* The framebuffer is currently unbound, presumably
5251 * due to a hotplug event, that userspace has not
5258 if (crtc->funcs->page_flip == NULL)
5261 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
5268 const struct drm_plane_state *state = crtc->primary->state;
5270 ret = check_src_coords(state->src_x, state->src_y,
5271 state->src_w, state->src_h, fb);
5273 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
5278 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
5279 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
5284 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
5286 spin_lock_irqsave(&dev->event_lock, flags);
5287 if (file_priv->event_space < sizeof(e->event)) {
5288 spin_unlock_irqrestore(&dev->event_lock, flags);
5291 file_priv->event_space -= sizeof(e->event);
5292 spin_unlock_irqrestore(&dev->event_lock, flags);
5294 e = kzalloc(sizeof(*e), GFP_KERNEL);
5296 spin_lock_irqsave(&dev->event_lock, flags);
5297 file_priv->event_space += sizeof(e->event);
5298 spin_unlock_irqrestore(&dev->event_lock, flags);
5302 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
5303 e->event.base.length = sizeof(e->event);
5304 e->event.user_data = page_flip->user_data;
5305 e->base.event = &e->event.base;
5306 e->base.file_priv = file_priv;
5308 (void (*) (struct drm_pending_event *)) kfree;
5311 crtc->primary->old_fb = crtc->primary->fb;
5312 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
5314 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
5315 spin_lock_irqsave(&dev->event_lock, flags);
5316 file_priv->event_space += sizeof(e->event);
5317 spin_unlock_irqrestore(&dev->event_lock, flags);
5320 /* Keep the old fb, don't unref it. */
5321 crtc->primary->old_fb = NULL;
5323 crtc->primary->fb = fb;
5324 /* Unref only the old framebuffer. */
5330 drm_framebuffer_unreference(fb);
5331 if (crtc->primary->old_fb)
5332 drm_framebuffer_unreference(crtc->primary->old_fb);
5333 crtc->primary->old_fb = NULL;
5334 drm_modeset_unlock_crtc(crtc);
5340 * drm_mode_config_reset - call ->reset callbacks
5343 * This functions calls all the crtc's, encoder's and connector's ->reset
5344 * callback. Drivers can use this in e.g. their driver load or resume code to
5345 * reset hardware and software state.
5347 void drm_mode_config_reset(struct drm_device *dev)
5349 struct drm_crtc *crtc;
5350 struct drm_plane *plane;
5351 struct drm_encoder *encoder;
5352 struct drm_connector *connector;
5354 drm_for_each_plane(plane, dev)
5355 if (plane->funcs->reset)
5356 plane->funcs->reset(plane);
5358 drm_for_each_crtc(crtc, dev)
5359 if (crtc->funcs->reset)
5360 crtc->funcs->reset(crtc);
5362 drm_for_each_encoder(encoder, dev)
5363 if (encoder->funcs->reset)
5364 encoder->funcs->reset(encoder);
5366 mutex_lock(&dev->mode_config.mutex);
5367 drm_for_each_connector(connector, dev)
5368 if (connector->funcs->reset)
5369 connector->funcs->reset(connector);
5370 mutex_unlock(&dev->mode_config.mutex);
5372 EXPORT_SYMBOL(drm_mode_config_reset);
5375 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5378 * @file_priv: DRM file info
5380 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5381 * TTM or something else entirely) and returns the resulting buffer handle. This
5382 * handle can then be wrapped up into a framebuffer modeset object.
5384 * Note that userspace is not allowed to use such objects for render
5385 * acceleration - drivers must create their own private ioctls for such a use
5388 * Called by the user via ioctl.
5391 * Zero on success, negative errno on failure.
5393 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
5394 void *data, struct drm_file *file_priv)
5396 struct drm_mode_create_dumb *args = data;
5397 u32 cpp, stride, size;
5399 if (!dev->driver->dumb_create)
5401 if (!args->width || !args->height || !args->bpp)
5404 /* overflow checks for 32bit size calculations */
5405 /* NOTE: DIV_ROUND_UP() can overflow */
5406 cpp = DIV_ROUND_UP(args->bpp, 8);
5407 if (!cpp || cpp > 0xffffffffU / args->width)
5409 stride = cpp * args->width;
5410 if (args->height > 0xffffffffU / stride)
5413 /* test for wrap-around */
5414 size = args->height * stride;
5415 if (PAGE_ALIGN(size) == 0)
5419 * handle, pitch and size are output parameters. Zero them out to
5420 * prevent drivers from accidentally using uninitialized data. Since
5421 * not all existing userspace is clearing these fields properly we
5422 * cannot reject IOCTL with garbage in them.
5428 return dev->driver->dumb_create(file_priv, dev, args);
5432 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5435 * @file_priv: DRM file info
5437 * Allocate an offset in the drm device node's address space to be able to
5438 * memory map a dumb buffer.
5440 * Called by the user via ioctl.
5443 * Zero on success, negative errno on failure.
5445 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
5446 void *data, struct drm_file *file_priv)
5448 struct drm_mode_map_dumb *args = data;
5450 /* call driver ioctl to get mmap offset */
5451 if (!dev->driver->dumb_map_offset)
5454 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
5458 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5461 * @file_priv: DRM file info
5463 * This destroys the userspace handle for the given dumb backing storage buffer.
5464 * Since buffer objects must be reference counted in the kernel a buffer object
5465 * won't be immediately freed if a framebuffer modeset object still uses it.
5467 * Called by the user via ioctl.
5470 * Zero on success, negative errno on failure.
5472 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
5473 void *data, struct drm_file *file_priv)
5475 struct drm_mode_destroy_dumb *args = data;
5477 if (!dev->driver->dumb_destroy)
5480 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
5484 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5485 * @format: pixel format (DRM_FORMAT_*)
5486 * @depth: storage for the depth value
5487 * @bpp: storage for the bpp value
5489 * This only supports RGB formats here for compat with code that doesn't use
5490 * pixel formats directly yet.
5492 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
5497 case DRM_FORMAT_RGB332:
5498 case DRM_FORMAT_BGR233:
5502 case DRM_FORMAT_XRGB1555:
5503 case DRM_FORMAT_XBGR1555:
5504 case DRM_FORMAT_RGBX5551:
5505 case DRM_FORMAT_BGRX5551:
5506 case DRM_FORMAT_ARGB1555:
5507 case DRM_FORMAT_ABGR1555:
5508 case DRM_FORMAT_RGBA5551:
5509 case DRM_FORMAT_BGRA5551:
5513 case DRM_FORMAT_RGB565:
5514 case DRM_FORMAT_BGR565:
5518 case DRM_FORMAT_RGB888:
5519 case DRM_FORMAT_BGR888:
5523 case DRM_FORMAT_XRGB8888:
5524 case DRM_FORMAT_XBGR8888:
5525 case DRM_FORMAT_RGBX8888:
5526 case DRM_FORMAT_BGRX8888:
5530 case DRM_FORMAT_XRGB2101010:
5531 case DRM_FORMAT_XBGR2101010:
5532 case DRM_FORMAT_RGBX1010102:
5533 case DRM_FORMAT_BGRX1010102:
5534 case DRM_FORMAT_ARGB2101010:
5535 case DRM_FORMAT_ABGR2101010:
5536 case DRM_FORMAT_RGBA1010102:
5537 case DRM_FORMAT_BGRA1010102:
5541 case DRM_FORMAT_ARGB8888:
5542 case DRM_FORMAT_ABGR8888:
5543 case DRM_FORMAT_RGBA8888:
5544 case DRM_FORMAT_BGRA8888:
5549 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5550 drm_get_format_name(format));
5556 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
5559 * drm_format_num_planes - get the number of planes for format
5560 * @format: pixel format (DRM_FORMAT_*)
5563 * The number of planes used by the specified pixel format.
5565 int drm_format_num_planes(uint32_t format)
5568 case DRM_FORMAT_YUV410:
5569 case DRM_FORMAT_YVU410:
5570 case DRM_FORMAT_YUV411:
5571 case DRM_FORMAT_YVU411:
5572 case DRM_FORMAT_YUV420:
5573 case DRM_FORMAT_YVU420:
5574 case DRM_FORMAT_YUV422:
5575 case DRM_FORMAT_YVU422:
5576 case DRM_FORMAT_YUV444:
5577 case DRM_FORMAT_YVU444:
5579 case DRM_FORMAT_NV12:
5580 case DRM_FORMAT_NV21:
5581 case DRM_FORMAT_NV16:
5582 case DRM_FORMAT_NV61:
5583 case DRM_FORMAT_NV24:
5584 case DRM_FORMAT_NV42:
5590 EXPORT_SYMBOL(drm_format_num_planes);
5593 * drm_format_plane_cpp - determine the bytes per pixel value
5594 * @format: pixel format (DRM_FORMAT_*)
5595 * @plane: plane index
5598 * The bytes per pixel value for the specified plane.
5600 int drm_format_plane_cpp(uint32_t format, int plane)
5605 if (plane >= drm_format_num_planes(format))
5609 case DRM_FORMAT_YUYV:
5610 case DRM_FORMAT_YVYU:
5611 case DRM_FORMAT_UYVY:
5612 case DRM_FORMAT_VYUY:
5614 case DRM_FORMAT_NV12:
5615 case DRM_FORMAT_NV21:
5616 case DRM_FORMAT_NV16:
5617 case DRM_FORMAT_NV61:
5618 case DRM_FORMAT_NV24:
5619 case DRM_FORMAT_NV42:
5620 return plane ? 2 : 1;
5621 case DRM_FORMAT_YUV410:
5622 case DRM_FORMAT_YVU410:
5623 case DRM_FORMAT_YUV411:
5624 case DRM_FORMAT_YVU411:
5625 case DRM_FORMAT_YUV420:
5626 case DRM_FORMAT_YVU420:
5627 case DRM_FORMAT_YUV422:
5628 case DRM_FORMAT_YVU422:
5629 case DRM_FORMAT_YUV444:
5630 case DRM_FORMAT_YVU444:
5633 drm_fb_get_bpp_depth(format, &depth, &bpp);
5637 EXPORT_SYMBOL(drm_format_plane_cpp);
5640 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5641 * @format: pixel format (DRM_FORMAT_*)
5644 * The horizontal chroma subsampling factor for the
5645 * specified pixel format.
5647 int drm_format_horz_chroma_subsampling(uint32_t format)
5650 case DRM_FORMAT_YUV411:
5651 case DRM_FORMAT_YVU411:
5652 case DRM_FORMAT_YUV410:
5653 case DRM_FORMAT_YVU410:
5655 case DRM_FORMAT_YUYV:
5656 case DRM_FORMAT_YVYU:
5657 case DRM_FORMAT_UYVY:
5658 case DRM_FORMAT_VYUY:
5659 case DRM_FORMAT_NV12:
5660 case DRM_FORMAT_NV21:
5661 case DRM_FORMAT_NV16:
5662 case DRM_FORMAT_NV61:
5663 case DRM_FORMAT_YUV422:
5664 case DRM_FORMAT_YVU422:
5665 case DRM_FORMAT_YUV420:
5666 case DRM_FORMAT_YVU420:
5672 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5675 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5676 * @format: pixel format (DRM_FORMAT_*)
5679 * The vertical chroma subsampling factor for the
5680 * specified pixel format.
5682 int drm_format_vert_chroma_subsampling(uint32_t format)
5685 case DRM_FORMAT_YUV410:
5686 case DRM_FORMAT_YVU410:
5688 case DRM_FORMAT_YUV420:
5689 case DRM_FORMAT_YVU420:
5690 case DRM_FORMAT_NV12:
5691 case DRM_FORMAT_NV21:
5697 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
5700 * drm_rotation_simplify() - Try to simplify the rotation
5701 * @rotation: Rotation to be simplified
5702 * @supported_rotations: Supported rotations
5704 * Attempt to simplify the rotation to a form that is supported.
5705 * Eg. if the hardware supports everything except DRM_REFLECT_X
5706 * one could call this function like this:
5708 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5709 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5710 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5712 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5713 * transforms the hardware supports, this function may not
5714 * be able to produce a supported transform, so the caller should
5715 * check the result afterwards.
5717 unsigned int drm_rotation_simplify(unsigned int rotation,
5718 unsigned int supported_rotations)
5720 if (rotation & ~supported_rotations) {
5721 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5722 rotation = (rotation & DRM_REFLECT_MASK) |
5723 BIT((ffs(rotation & DRM_ROTATE_MASK) + 1) % 4);
5728 EXPORT_SYMBOL(drm_rotation_simplify);
5731 * drm_mode_config_init - initialize DRM mode_configuration structure
5734 * Initialize @dev's mode_config structure, used for tracking the graphics
5735 * configuration of @dev.
5737 * Since this initializes the modeset locks, no locking is possible. Which is no
5738 * problem, since this should happen single threaded at init time. It is the
5739 * driver's problem to ensure this guarantee.
5742 void drm_mode_config_init(struct drm_device *dev)
5744 mutex_init(&dev->mode_config.mutex);
5745 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
5746 mutex_init(&dev->mode_config.idr_mutex);
5747 mutex_init(&dev->mode_config.fb_lock);
5748 mutex_init(&dev->mode_config.blob_lock);
5749 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5750 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5751 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5752 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5753 INIT_LIST_HEAD(&dev->mode_config.property_list);
5754 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5755 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5756 idr_init(&dev->mode_config.crtc_idr);
5757 idr_init(&dev->mode_config.tile_idr);
5759 drm_modeset_lock_all(dev);
5760 drm_mode_create_standard_properties(dev);
5761 drm_modeset_unlock_all(dev);
5763 /* Just to be sure */
5764 dev->mode_config.num_fb = 0;
5765 dev->mode_config.num_connector = 0;
5766 dev->mode_config.num_crtc = 0;
5767 dev->mode_config.num_encoder = 0;
5768 dev->mode_config.num_overlay_plane = 0;
5769 dev->mode_config.num_total_plane = 0;
5771 EXPORT_SYMBOL(drm_mode_config_init);
5774 * drm_mode_config_cleanup - free up DRM mode_config info
5777 * Free up all the connectors and CRTCs associated with this DRM device, then
5778 * free up the framebuffers and associated buffer objects.
5780 * Note that since this /should/ happen single-threaded at driver/device
5781 * teardown time, no locking is required. It's the driver's job to ensure that
5782 * this guarantee actually holds true.
5784 * FIXME: cleanup any dangling user buffer objects too
5786 void drm_mode_config_cleanup(struct drm_device *dev)
5788 struct drm_connector *connector, *ot;
5789 struct drm_crtc *crtc, *ct;
5790 struct drm_encoder *encoder, *enct;
5791 struct drm_framebuffer *fb, *fbt;
5792 struct drm_property *property, *pt;
5793 struct drm_property_blob *blob, *bt;
5794 struct drm_plane *plane, *plt;
5796 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5798 encoder->funcs->destroy(encoder);
5801 list_for_each_entry_safe(connector, ot,
5802 &dev->mode_config.connector_list, head) {
5803 connector->funcs->destroy(connector);
5806 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5808 drm_property_destroy(dev, property);
5811 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5813 drm_property_unreference_blob(blob);
5817 * Single-threaded teardown context, so it's not required to grab the
5818 * fb_lock to protect against concurrent fb_list access. Contrary, it
5819 * would actually deadlock with the drm_framebuffer_cleanup function.
5821 * Also, if there are any framebuffers left, that's a driver leak now,
5822 * so politely WARN about this.
5824 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5825 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5826 drm_framebuffer_free(&fb->refcount);
5829 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5831 plane->funcs->destroy(plane);
5834 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5835 crtc->funcs->destroy(crtc);
5838 idr_destroy(&dev->mode_config.tile_idr);
5839 idr_destroy(&dev->mode_config.crtc_idr);
5840 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
5842 EXPORT_SYMBOL(drm_mode_config_cleanup);
5844 struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5845 unsigned int supported_rotations)
5847 static const struct drm_prop_enum_list props[] = {
5848 { DRM_ROTATE_0, "rotate-0" },
5849 { DRM_ROTATE_90, "rotate-90" },
5850 { DRM_ROTATE_180, "rotate-180" },
5851 { DRM_ROTATE_270, "rotate-270" },
5852 { DRM_REFLECT_X, "reflect-x" },
5853 { DRM_REFLECT_Y, "reflect-y" },
5856 return drm_property_create_bitmask(dev, 0, "rotation",
5857 props, ARRAY_SIZE(props),
5858 supported_rotations);
5860 EXPORT_SYMBOL(drm_mode_create_rotation_property);
5865 * Tile groups are used to represent tiled monitors with a unique
5866 * integer identifier. Tiled monitors using DisplayID v1.3 have
5867 * a unique 8-byte handle, we store this in a tile group, so we
5868 * have a common identifier for all tiles in a monitor group.
5870 static void drm_tile_group_free(struct kref *kref)
5872 struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
5873 struct drm_device *dev = tg->dev;
5874 mutex_lock(&dev->mode_config.idr_mutex);
5875 idr_remove(&dev->mode_config.tile_idr, tg->id);
5876 mutex_unlock(&dev->mode_config.idr_mutex);
5881 * drm_mode_put_tile_group - drop a reference to a tile group.
5883 * @tg: tile group to drop reference to.
5885 * drop reference to tile group and free if 0.
5887 void drm_mode_put_tile_group(struct drm_device *dev,
5888 struct drm_tile_group *tg)
5890 kref_put(&tg->refcount, drm_tile_group_free);
5894 * drm_mode_get_tile_group - get a reference to an existing tile group
5896 * @topology: 8-bytes unique per monitor.
5898 * Use the unique bytes to get a reference to an existing tile group.
5901 * tile group or NULL if not found.
5903 struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
5906 struct drm_tile_group *tg;
5908 mutex_lock(&dev->mode_config.idr_mutex);
5909 idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
5910 if (!memcmp(tg->group_data, topology, 8)) {
5911 if (!kref_get_unless_zero(&tg->refcount))
5913 mutex_unlock(&dev->mode_config.idr_mutex);
5917 mutex_unlock(&dev->mode_config.idr_mutex);
5920 EXPORT_SYMBOL(drm_mode_get_tile_group);
5923 * drm_mode_create_tile_group - create a tile group from a displayid description
5925 * @topology: 8-bytes unique per monitor.
5927 * Create a tile group for the unique monitor, and get a unique
5928 * identifier for the tile group.
5931 * new tile group or error.
5933 struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
5936 struct drm_tile_group *tg;
5939 tg = kzalloc(sizeof(*tg), GFP_KERNEL);
5941 return ERR_PTR(-ENOMEM);
5943 kref_init(&tg->refcount);
5944 memcpy(tg->group_data, topology, 8);
5947 mutex_lock(&dev->mode_config.idr_mutex);
5948 ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
5956 mutex_unlock(&dev->mode_config.idr_mutex);
5959 EXPORT_SYMBOL(drm_mode_create_tile_group);