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 *add_framebuffer_internal(struct drm_device *dev,
47 struct drm_mode_fb_cmd2 *r,
48 struct drm_file *file_priv);
50 /* Avoid boilerplate. I'm tired of typing. */
51 #define DRM_ENUM_NAME_FN(fnname, list) \
52 const char *fnname(int val) \
55 for (i = 0; i < ARRAY_SIZE(list); i++) { \
56 if (list[i].type == val) \
57 return list[i].name; \
65 static const struct drm_prop_enum_list drm_dpms_enum_list[] = {
66 { DRM_MODE_DPMS_ON, "On" },
67 { DRM_MODE_DPMS_STANDBY, "Standby" },
68 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
69 { DRM_MODE_DPMS_OFF, "Off" }
72 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
74 static const struct drm_prop_enum_list drm_plane_type_enum_list[] = {
75 { DRM_PLANE_TYPE_OVERLAY, "Overlay" },
76 { DRM_PLANE_TYPE_PRIMARY, "Primary" },
77 { DRM_PLANE_TYPE_CURSOR, "Cursor" },
83 static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] = {
84 { DRM_MODE_SCALE_NONE, "None" },
85 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
86 { DRM_MODE_SCALE_CENTER, "Center" },
87 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
90 static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = {
91 { DRM_MODE_PICTURE_ASPECT_NONE, "Automatic" },
92 { DRM_MODE_PICTURE_ASPECT_4_3, "4:3" },
93 { DRM_MODE_PICTURE_ASPECT_16_9, "16:9" },
97 * Non-global properties, but "required" for certain connectors.
99 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = {
100 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
101 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
102 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
105 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
107 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = {
108 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
109 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
110 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
113 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
114 drm_dvi_i_subconnector_enum_list)
116 static const struct drm_prop_enum_list drm_tv_select_enum_list[] = {
117 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
118 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
119 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
120 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
121 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
124 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
126 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = {
127 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
128 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
129 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
130 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
131 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
134 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
135 drm_tv_subconnector_enum_list)
137 static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
138 { DRM_MODE_DIRTY_OFF, "Off" },
139 { DRM_MODE_DIRTY_ON, "On" },
140 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
143 struct drm_conn_prop_enum_list {
150 * Connector and encoder types.
152 static struct drm_conn_prop_enum_list drm_connector_enum_list[] = {
153 { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
154 { DRM_MODE_CONNECTOR_VGA, "VGA" },
155 { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
156 { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
157 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
158 { DRM_MODE_CONNECTOR_Composite, "Composite" },
159 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
160 { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
161 { DRM_MODE_CONNECTOR_Component, "Component" },
162 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
163 { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
164 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
165 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
166 { DRM_MODE_CONNECTOR_TV, "TV" },
167 { DRM_MODE_CONNECTOR_eDP, "eDP" },
168 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
169 { DRM_MODE_CONNECTOR_DSI, "DSI" },
172 static const struct drm_prop_enum_list drm_encoder_enum_list[] = {
173 { DRM_MODE_ENCODER_NONE, "None" },
174 { DRM_MODE_ENCODER_DAC, "DAC" },
175 { DRM_MODE_ENCODER_TMDS, "TMDS" },
176 { DRM_MODE_ENCODER_LVDS, "LVDS" },
177 { DRM_MODE_ENCODER_TVDAC, "TV" },
178 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
179 { DRM_MODE_ENCODER_DSI, "DSI" },
180 { DRM_MODE_ENCODER_DPMST, "DP MST" },
183 static const struct drm_prop_enum_list drm_subpixel_enum_list[] = {
184 { SubPixelUnknown, "Unknown" },
185 { SubPixelHorizontalRGB, "Horizontal RGB" },
186 { SubPixelHorizontalBGR, "Horizontal BGR" },
187 { SubPixelVerticalRGB, "Vertical RGB" },
188 { SubPixelVerticalBGR, "Vertical BGR" },
189 { SubPixelNone, "None" },
192 void drm_connector_ida_init(void)
196 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
197 ida_init(&drm_connector_enum_list[i].ida);
200 void drm_connector_ida_destroy(void)
204 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
205 ida_destroy(&drm_connector_enum_list[i].ida);
209 * drm_get_connector_status_name - return a string for connector status
210 * @status: connector status to compute name of
212 * In contrast to the other drm_get_*_name functions this one here returns a
213 * const pointer and hence is threadsafe.
215 const char *drm_get_connector_status_name(enum drm_connector_status status)
217 if (status == connector_status_connected)
219 else if (status == connector_status_disconnected)
220 return "disconnected";
224 EXPORT_SYMBOL(drm_get_connector_status_name);
227 * drm_get_subpixel_order_name - return a string for a given subpixel enum
228 * @order: enum of subpixel_order
230 * Note you could abuse this and return something out of bounds, but that
231 * would be a caller error. No unscrubbed user data should make it here.
233 const char *drm_get_subpixel_order_name(enum subpixel_order order)
235 return drm_subpixel_enum_list[order].name;
237 EXPORT_SYMBOL(drm_get_subpixel_order_name);
239 static char printable_char(int c)
241 return isascii(c) && isprint(c) ? c : '?';
245 * drm_get_format_name - return a string for drm fourcc format
246 * @format: format to compute name of
248 * Note that the buffer used by this function is globally shared and owned by
249 * the function itself.
251 * FIXME: This isn't really multithreading safe.
253 const char *drm_get_format_name(uint32_t format)
257 snprintf(buf, sizeof(buf),
258 "%c%c%c%c %s-endian (0x%08x)",
259 printable_char(format & 0xff),
260 printable_char((format >> 8) & 0xff),
261 printable_char((format >> 16) & 0xff),
262 printable_char((format >> 24) & 0x7f),
263 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
268 EXPORT_SYMBOL(drm_get_format_name);
271 * Internal function to assign a slot in the object idr and optionally
272 * register the object into the idr.
274 static int drm_mode_object_get_reg(struct drm_device *dev,
275 struct drm_mode_object *obj,
281 mutex_lock(&dev->mode_config.idr_mutex);
282 ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
285 * Set up the object linking under the protection of the idr
286 * lock so that other users can't see inconsistent state.
289 obj->type = obj_type;
291 mutex_unlock(&dev->mode_config.idr_mutex);
293 return ret < 0 ? ret : 0;
297 * drm_mode_object_get - allocate a new modeset identifier
299 * @obj: object pointer, used to generate unique ID
300 * @obj_type: object type
302 * Create a unique identifier based on @ptr in @dev's identifier space. Used
303 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
304 * modeset identifiers are _not_ reference counted. Hence don't use this for
305 * reference counted modeset objects like framebuffers.
308 * New unique (relative to other objects in @dev) integer identifier for the
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 */
354 if (obj && (obj->type == DRM_MODE_OBJECT_FB))
356 mutex_unlock(&dev->mode_config.idr_mutex);
362 * drm_mode_object_find - look up a drm object with static lifetime
364 * @id: id of the mode object
365 * @type: type of the mode object
367 * Note that framebuffers cannot be looked up with this functions - since those
368 * are reference counted, they need special treatment. Even with
369 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
370 * rather than WARN_ON()).
372 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
373 uint32_t id, uint32_t type)
375 struct drm_mode_object *obj = NULL;
377 /* Framebuffers are reference counted and need their own lookup
379 WARN_ON(type == DRM_MODE_OBJECT_FB);
380 obj = _object_find(dev, id, type);
383 EXPORT_SYMBOL(drm_mode_object_find);
386 * drm_framebuffer_init - initialize a framebuffer
388 * @fb: framebuffer to be initialized
389 * @funcs: ... with these functions
391 * Allocates an ID for the framebuffer's parent mode object, sets its mode
392 * functions & device file and adds it to the master fd list.
395 * This functions publishes the fb and makes it available for concurrent access
396 * by other users. Which means by this point the fb _must_ be fully set up -
397 * since all the fb attributes are invariant over its lifetime, no further
398 * locking but only correct reference counting is required.
401 * Zero on success, error code on failure.
403 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
404 const struct drm_framebuffer_funcs *funcs)
408 mutex_lock(&dev->mode_config.fb_lock);
409 kref_init(&fb->refcount);
410 INIT_LIST_HEAD(&fb->filp_head);
414 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
418 dev->mode_config.num_fb++;
419 list_add(&fb->head, &dev->mode_config.fb_list);
421 mutex_unlock(&dev->mode_config.fb_lock);
425 EXPORT_SYMBOL(drm_framebuffer_init);
427 /* dev->mode_config.fb_lock must be held! */
428 static void __drm_framebuffer_unregister(struct drm_device *dev,
429 struct drm_framebuffer *fb)
431 mutex_lock(&dev->mode_config.idr_mutex);
432 idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
433 mutex_unlock(&dev->mode_config.idr_mutex);
438 static void drm_framebuffer_free(struct kref *kref)
440 struct drm_framebuffer *fb =
441 container_of(kref, struct drm_framebuffer, refcount);
442 struct drm_device *dev = fb->dev;
445 * The lookup idr holds a weak reference, which has not necessarily been
446 * removed at this point. Check for that.
448 mutex_lock(&dev->mode_config.fb_lock);
450 /* Mark fb as reaped and drop idr ref. */
451 __drm_framebuffer_unregister(dev, fb);
453 mutex_unlock(&dev->mode_config.fb_lock);
455 fb->funcs->destroy(fb);
458 static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
461 struct drm_mode_object *obj = NULL;
462 struct drm_framebuffer *fb;
464 mutex_lock(&dev->mode_config.idr_mutex);
465 obj = idr_find(&dev->mode_config.crtc_idr, id);
466 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
470 mutex_unlock(&dev->mode_config.idr_mutex);
476 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
478 * @id: id of the fb object
480 * If successful, this grabs an additional reference to the framebuffer -
481 * callers need to make sure to eventually unreference the returned framebuffer
482 * again, using @drm_framebuffer_unreference.
484 struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
487 struct drm_framebuffer *fb;
489 mutex_lock(&dev->mode_config.fb_lock);
490 fb = __drm_framebuffer_lookup(dev, id);
492 if (!kref_get_unless_zero(&fb->refcount))
495 mutex_unlock(&dev->mode_config.fb_lock);
499 EXPORT_SYMBOL(drm_framebuffer_lookup);
502 * drm_framebuffer_unreference - unref a framebuffer
503 * @fb: framebuffer to unref
505 * This functions decrements the fb's refcount and frees it if it drops to zero.
507 void drm_framebuffer_unreference(struct drm_framebuffer *fb)
509 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
510 kref_put(&fb->refcount, drm_framebuffer_free);
512 EXPORT_SYMBOL(drm_framebuffer_unreference);
515 * drm_framebuffer_reference - incr the fb refcnt
518 * This functions increments the fb's refcount.
520 void drm_framebuffer_reference(struct drm_framebuffer *fb)
522 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
523 kref_get(&fb->refcount);
525 EXPORT_SYMBOL(drm_framebuffer_reference);
527 static void drm_framebuffer_free_bug(struct kref *kref)
532 static void __drm_framebuffer_unreference(struct drm_framebuffer *fb)
534 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
535 kref_put(&fb->refcount, drm_framebuffer_free_bug);
539 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
540 * @fb: fb to unregister
542 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
543 * those used for fbdev. Note that the caller must hold a reference of it's own,
544 * i.e. the object may not be destroyed through this call (since it'll lead to a
545 * locking inversion).
547 void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
549 struct drm_device *dev = fb->dev;
551 mutex_lock(&dev->mode_config.fb_lock);
552 /* Mark fb as reaped and drop idr ref. */
553 __drm_framebuffer_unregister(dev, fb);
554 mutex_unlock(&dev->mode_config.fb_lock);
556 EXPORT_SYMBOL(drm_framebuffer_unregister_private);
559 * drm_framebuffer_cleanup - remove a framebuffer object
560 * @fb: framebuffer to remove
562 * Cleanup framebuffer. This function is intended to be used from the drivers
563 * ->destroy callback. It can also be used to clean up driver private
564 * framebuffers embedded into a larger structure.
566 * Note that this function does not remove the fb from active usuage - if it is
567 * still used anywhere, hilarity can ensue since userspace could call getfb on
568 * the id and get back -EINVAL. Obviously no concern at driver unload time.
570 * Also, the framebuffer will not be removed from the lookup idr - for
571 * user-created framebuffers this will happen in in the rmfb ioctl. For
572 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
573 * drm_framebuffer_unregister_private.
575 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
577 struct drm_device *dev = fb->dev;
579 mutex_lock(&dev->mode_config.fb_lock);
581 dev->mode_config.num_fb--;
582 mutex_unlock(&dev->mode_config.fb_lock);
584 EXPORT_SYMBOL(drm_framebuffer_cleanup);
587 * drm_framebuffer_remove - remove and unreference a framebuffer object
588 * @fb: framebuffer to remove
590 * Scans all the CRTCs and planes in @dev's mode_config. If they're
591 * using @fb, removes it, setting it to NULL. Then drops the reference to the
592 * passed-in framebuffer. Might take the modeset locks.
594 * Note that this function optimizes the cleanup away if the caller holds the
595 * last reference to the framebuffer. It is also guaranteed to not take the
596 * modeset locks in this case.
598 void drm_framebuffer_remove(struct drm_framebuffer *fb)
600 struct drm_device *dev = fb->dev;
601 struct drm_crtc *crtc;
602 struct drm_plane *plane;
603 struct drm_mode_set set;
606 WARN_ON(!list_empty(&fb->filp_head));
609 * drm ABI mandates that we remove any deleted framebuffers from active
610 * useage. But since most sane clients only remove framebuffers they no
611 * longer need, try to optimize this away.
613 * Since we're holding a reference ourselves, observing a refcount of 1
614 * means that we're the last holder and can skip it. Also, the refcount
615 * can never increase from 1 again, so we don't need any barriers or
618 * Note that userspace could try to race with use and instate a new
619 * usage _after_ we've cleared all current ones. End result will be an
620 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
623 if (atomic_read(&fb->refcount.refcount) > 1) {
624 drm_modeset_lock_all(dev);
625 /* remove from any CRTC */
626 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
627 if (crtc->primary->fb == fb) {
628 /* should turn off the crtc */
629 memset(&set, 0, sizeof(struct drm_mode_set));
632 ret = drm_mode_set_config_internal(&set);
634 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
638 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
640 drm_plane_force_disable(plane);
642 drm_modeset_unlock_all(dev);
645 drm_framebuffer_unreference(fb);
647 EXPORT_SYMBOL(drm_framebuffer_remove);
649 DEFINE_WW_CLASS(crtc_ww_class);
652 * drm_crtc_init_with_planes - Initialise a new CRTC object with
653 * specified primary and cursor planes.
655 * @crtc: CRTC object to init
656 * @primary: Primary plane for CRTC
657 * @cursor: Cursor plane for CRTC
658 * @funcs: callbacks for the new CRTC
660 * Inits a new object created as base part of a driver crtc object.
663 * Zero on success, error code on failure.
665 int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
666 struct drm_plane *primary,
667 struct drm_plane *cursor,
668 const struct drm_crtc_funcs *funcs)
670 struct drm_mode_config *config = &dev->mode_config;
675 crtc->invert_dimensions = false;
677 drm_modeset_lock_init(&crtc->mutex);
678 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
682 crtc->base.properties = &crtc->properties;
684 list_add_tail(&crtc->head, &config->crtc_list);
687 crtc->primary = primary;
688 crtc->cursor = cursor;
690 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
692 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
696 EXPORT_SYMBOL(drm_crtc_init_with_planes);
699 * drm_crtc_cleanup - Clean up the core crtc usage
700 * @crtc: CRTC to cleanup
702 * This function cleans up @crtc and removes it from the DRM mode setting
703 * core. Note that the function does *not* free the crtc structure itself,
704 * this is the responsibility of the caller.
706 void drm_crtc_cleanup(struct drm_crtc *crtc)
708 struct drm_device *dev = crtc->dev;
710 kfree(crtc->gamma_store);
711 crtc->gamma_store = NULL;
713 drm_modeset_lock_fini(&crtc->mutex);
715 drm_mode_object_put(dev, &crtc->base);
716 list_del(&crtc->head);
717 dev->mode_config.num_crtc--;
719 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
720 if (crtc->state && crtc->funcs->atomic_destroy_state)
721 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
723 memset(crtc, 0, sizeof(*crtc));
725 EXPORT_SYMBOL(drm_crtc_cleanup);
728 * drm_crtc_index - find the index of a registered CRTC
729 * @crtc: CRTC to find index for
731 * Given a registered CRTC, return the index of that CRTC within a DRM
732 * device's list of CRTCs.
734 unsigned int drm_crtc_index(struct drm_crtc *crtc)
736 unsigned int index = 0;
737 struct drm_crtc *tmp;
739 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
748 EXPORT_SYMBOL(drm_crtc_index);
751 * drm_mode_remove - remove and free a mode
752 * @connector: connector list to modify
753 * @mode: mode to remove
755 * Remove @mode from @connector's mode list, then free it.
757 static void drm_mode_remove(struct drm_connector *connector,
758 struct drm_display_mode *mode)
760 list_del(&mode->head);
761 drm_mode_destroy(connector->dev, mode);
765 * drm_display_info_set_bus_formats - set the supported bus formats
766 * @info: display info to store bus formats in
767 * @fmts: array containing the supported bus formats
768 * @nfmts: the number of entries in the fmts array
770 * Store the supported bus formats in display info structure.
771 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
772 * a full list of available formats.
774 int drm_display_info_set_bus_formats(struct drm_display_info *info,
776 unsigned int num_formats)
780 if (!formats && num_formats)
783 if (formats && num_formats) {
784 fmts = kmemdup(formats, sizeof(*formats) * num_formats,
790 kfree(info->bus_formats);
791 info->bus_formats = fmts;
792 info->num_bus_formats = num_formats;
796 EXPORT_SYMBOL(drm_display_info_set_bus_formats);
799 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
800 * @connector: connector to quwery
802 * The kernel supports per-connector configration of its consoles through
803 * use of the video= parameter. This function parses that option and
804 * extracts the user's specified mode (or enable/disable status) for a
805 * particular connector. This is typically only used during the early fbdev
808 static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
810 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
813 if (fb_get_options(connector->name, &option))
816 if (!drm_mode_parse_command_line_for_connector(option,
824 switch (mode->force) {
828 case DRM_FORCE_ON_DIGITAL:
837 DRM_INFO("forcing %s connector %s\n", connector->name, s);
838 connector->force = mode->force;
841 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
843 mode->xres, mode->yres,
844 mode->refresh_specified ? mode->refresh : 60,
845 mode->rb ? " reduced blanking" : "",
846 mode->margins ? " with margins" : "",
847 mode->interlace ? " interlaced" : "");
851 * drm_connector_init - Init a preallocated connector
853 * @connector: the connector to init
854 * @funcs: callbacks for this connector
855 * @connector_type: user visible type of the connector
857 * Initialises a preallocated connector. Connectors should be
858 * subclassed as part of driver connector objects.
861 * Zero on success, error code on failure.
863 int drm_connector_init(struct drm_device *dev,
864 struct drm_connector *connector,
865 const struct drm_connector_funcs *funcs,
868 struct drm_mode_config *config = &dev->mode_config;
870 struct ida *connector_ida =
871 &drm_connector_enum_list[connector_type].ida;
873 drm_modeset_lock_all(dev);
875 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false);
879 connector->base.properties = &connector->properties;
880 connector->dev = dev;
881 connector->funcs = funcs;
882 connector->connector_type = connector_type;
883 connector->connector_type_id =
884 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
885 if (connector->connector_type_id < 0) {
886 ret = connector->connector_type_id;
890 kasprintf(GFP_KERNEL, "%s-%d",
891 drm_connector_enum_list[connector_type].name,
892 connector->connector_type_id);
893 if (!connector->name) {
898 INIT_LIST_HEAD(&connector->probed_modes);
899 INIT_LIST_HEAD(&connector->modes);
900 connector->edid_blob_ptr = NULL;
901 connector->status = connector_status_unknown;
903 drm_connector_get_cmdline_mode(connector);
905 /* We should add connectors at the end to avoid upsetting the connector
907 list_add_tail(&connector->head, &config->connector_list);
908 config->num_connector++;
910 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
911 drm_object_attach_property(&connector->base,
912 config->edid_property,
915 drm_object_attach_property(&connector->base,
916 config->dpms_property, 0);
918 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
919 drm_object_attach_property(&connector->base, config->prop_crtc_id, 0);
922 connector->debugfs_entry = NULL;
926 drm_mode_object_put(dev, &connector->base);
929 drm_modeset_unlock_all(dev);
933 EXPORT_SYMBOL(drm_connector_init);
936 * drm_connector_cleanup - cleans up an initialised connector
937 * @connector: connector to cleanup
939 * Cleans up the connector but doesn't free the object.
941 void drm_connector_cleanup(struct drm_connector *connector)
943 struct drm_device *dev = connector->dev;
944 struct drm_display_mode *mode, *t;
946 if (connector->tile_group) {
947 drm_mode_put_tile_group(dev, connector->tile_group);
948 connector->tile_group = NULL;
951 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
952 drm_mode_remove(connector, mode);
954 list_for_each_entry_safe(mode, t, &connector->modes, head)
955 drm_mode_remove(connector, mode);
957 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
958 connector->connector_type_id);
960 kfree(connector->display_info.bus_formats);
961 drm_mode_object_put(dev, &connector->base);
962 kfree(connector->name);
963 connector->name = NULL;
964 list_del(&connector->head);
965 dev->mode_config.num_connector--;
967 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
968 if (connector->state && connector->funcs->atomic_destroy_state)
969 connector->funcs->atomic_destroy_state(connector,
972 memset(connector, 0, sizeof(*connector));
974 EXPORT_SYMBOL(drm_connector_cleanup);
977 * drm_connector_index - find the index of a registered connector
978 * @connector: connector to find index for
980 * Given a registered connector, return the index of that connector within a DRM
981 * device's list of connectors.
983 unsigned int drm_connector_index(struct drm_connector *connector)
985 unsigned int index = 0;
986 struct drm_connector *tmp;
987 struct drm_mode_config *config = &connector->dev->mode_config;
989 WARN_ON(!drm_modeset_is_locked(&config->connection_mutex));
991 list_for_each_entry(tmp, &connector->dev->mode_config.connector_list, head) {
992 if (tmp == connector)
1000 EXPORT_SYMBOL(drm_connector_index);
1003 * drm_connector_register - register a connector
1004 * @connector: the connector to register
1006 * Register userspace interfaces for a connector
1009 * Zero on success, error code on failure.
1011 int drm_connector_register(struct drm_connector *connector)
1015 drm_mode_object_register(connector->dev, &connector->base);
1017 ret = drm_sysfs_connector_add(connector);
1021 ret = drm_debugfs_connector_add(connector);
1023 drm_sysfs_connector_remove(connector);
1029 EXPORT_SYMBOL(drm_connector_register);
1032 * drm_connector_unregister - unregister a connector
1033 * @connector: the connector to unregister
1035 * Unregister userspace interfaces for a connector
1037 void drm_connector_unregister(struct drm_connector *connector)
1039 drm_sysfs_connector_remove(connector);
1040 drm_debugfs_connector_remove(connector);
1042 EXPORT_SYMBOL(drm_connector_unregister);
1046 * drm_connector_unplug_all - unregister connector userspace interfaces
1049 * This function unregisters all connector userspace interfaces in sysfs. Should
1050 * be call when the device is disconnected, e.g. from an usb driver's
1051 * ->disconnect callback.
1053 void drm_connector_unplug_all(struct drm_device *dev)
1055 struct drm_connector *connector;
1057 /* taking the mode config mutex ends up in a clash with sysfs */
1058 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1059 drm_connector_unregister(connector);
1062 EXPORT_SYMBOL(drm_connector_unplug_all);
1065 * drm_bridge_init - initialize a drm transcoder/bridge
1067 * @bridge: transcoder/bridge to set up
1068 * @funcs: bridge function table
1070 * Initialises a preallocated bridge. Bridges should be
1071 * subclassed as part of driver connector objects.
1074 * Zero on success, error code on failure.
1076 int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
1077 const struct drm_bridge_funcs *funcs)
1081 drm_modeset_lock_all(dev);
1083 ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
1088 bridge->funcs = funcs;
1090 list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
1091 dev->mode_config.num_bridge++;
1094 drm_modeset_unlock_all(dev);
1097 EXPORT_SYMBOL(drm_bridge_init);
1100 * drm_bridge_cleanup - cleans up an initialised bridge
1101 * @bridge: bridge to cleanup
1103 * Cleans up the bridge but doesn't free the object.
1105 void drm_bridge_cleanup(struct drm_bridge *bridge)
1107 struct drm_device *dev = bridge->dev;
1109 drm_modeset_lock_all(dev);
1110 drm_mode_object_put(dev, &bridge->base);
1111 list_del(&bridge->head);
1112 dev->mode_config.num_bridge--;
1113 drm_modeset_unlock_all(dev);
1115 memset(bridge, 0, sizeof(*bridge));
1117 EXPORT_SYMBOL(drm_bridge_cleanup);
1120 * drm_encoder_init - Init a preallocated encoder
1122 * @encoder: the encoder to init
1123 * @funcs: callbacks for this encoder
1124 * @encoder_type: user visible type of the encoder
1126 * Initialises a preallocated encoder. Encoder should be
1127 * subclassed as part of driver encoder objects.
1130 * Zero on success, error code on failure.
1132 int drm_encoder_init(struct drm_device *dev,
1133 struct drm_encoder *encoder,
1134 const struct drm_encoder_funcs *funcs,
1139 drm_modeset_lock_all(dev);
1141 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1146 encoder->encoder_type = encoder_type;
1147 encoder->funcs = funcs;
1148 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1149 drm_encoder_enum_list[encoder_type].name,
1151 if (!encoder->name) {
1156 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1157 dev->mode_config.num_encoder++;
1161 drm_mode_object_put(dev, &encoder->base);
1164 drm_modeset_unlock_all(dev);
1168 EXPORT_SYMBOL(drm_encoder_init);
1171 * drm_encoder_cleanup - cleans up an initialised encoder
1172 * @encoder: encoder to cleanup
1174 * Cleans up the encoder but doesn't free the object.
1176 void drm_encoder_cleanup(struct drm_encoder *encoder)
1178 struct drm_device *dev = encoder->dev;
1180 drm_modeset_lock_all(dev);
1181 drm_mode_object_put(dev, &encoder->base);
1182 kfree(encoder->name);
1183 list_del(&encoder->head);
1184 dev->mode_config.num_encoder--;
1185 drm_modeset_unlock_all(dev);
1187 memset(encoder, 0, sizeof(*encoder));
1189 EXPORT_SYMBOL(drm_encoder_cleanup);
1192 * drm_universal_plane_init - Initialize a new universal plane object
1194 * @plane: plane object to init
1195 * @possible_crtcs: bitmask of possible CRTCs
1196 * @funcs: callbacks for the new plane
1197 * @formats: array of supported formats (%DRM_FORMAT_*)
1198 * @format_count: number of elements in @formats
1199 * @type: type of plane (overlay, primary, cursor)
1201 * Initializes a plane object of type @type.
1204 * Zero on success, error code on failure.
1206 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1207 unsigned long possible_crtcs,
1208 const struct drm_plane_funcs *funcs,
1209 const uint32_t *formats, uint32_t format_count,
1210 enum drm_plane_type type)
1212 struct drm_mode_config *config = &dev->mode_config;
1215 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1219 drm_modeset_lock_init(&plane->mutex);
1221 plane->base.properties = &plane->properties;
1223 plane->funcs = funcs;
1224 plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
1226 if (!plane->format_types) {
1227 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1228 drm_mode_object_put(dev, &plane->base);
1232 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1233 plane->format_count = format_count;
1234 plane->possible_crtcs = possible_crtcs;
1237 list_add_tail(&plane->head, &config->plane_list);
1238 config->num_total_plane++;
1239 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1240 config->num_overlay_plane++;
1242 drm_object_attach_property(&plane->base,
1243 config->plane_type_property,
1246 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
1247 drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
1248 drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
1249 drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
1250 drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
1251 drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
1252 drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
1253 drm_object_attach_property(&plane->base, config->prop_src_x, 0);
1254 drm_object_attach_property(&plane->base, config->prop_src_y, 0);
1255 drm_object_attach_property(&plane->base, config->prop_src_w, 0);
1256 drm_object_attach_property(&plane->base, config->prop_src_h, 0);
1261 EXPORT_SYMBOL(drm_universal_plane_init);
1264 * drm_plane_init - Initialize a legacy plane
1266 * @plane: plane object to init
1267 * @possible_crtcs: bitmask of possible CRTCs
1268 * @funcs: callbacks for the new plane
1269 * @formats: array of supported formats (%DRM_FORMAT_*)
1270 * @format_count: number of elements in @formats
1271 * @is_primary: plane type (primary vs overlay)
1273 * Legacy API to initialize a DRM plane.
1275 * New drivers should call drm_universal_plane_init() instead.
1278 * Zero on success, error code on failure.
1280 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1281 unsigned long possible_crtcs,
1282 const struct drm_plane_funcs *funcs,
1283 const uint32_t *formats, uint32_t format_count,
1286 enum drm_plane_type type;
1288 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1289 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1290 formats, format_count, type);
1292 EXPORT_SYMBOL(drm_plane_init);
1295 * drm_plane_cleanup - Clean up the core plane usage
1296 * @plane: plane to cleanup
1298 * This function cleans up @plane and removes it from the DRM mode setting
1299 * core. Note that the function does *not* free the plane structure itself,
1300 * this is the responsibility of the caller.
1302 void drm_plane_cleanup(struct drm_plane *plane)
1304 struct drm_device *dev = plane->dev;
1306 drm_modeset_lock_all(dev);
1307 kfree(plane->format_types);
1308 drm_mode_object_put(dev, &plane->base);
1310 BUG_ON(list_empty(&plane->head));
1312 list_del(&plane->head);
1313 dev->mode_config.num_total_plane--;
1314 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1315 dev->mode_config.num_overlay_plane--;
1316 drm_modeset_unlock_all(dev);
1318 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1319 if (plane->state && plane->funcs->atomic_destroy_state)
1320 plane->funcs->atomic_destroy_state(plane, plane->state);
1322 memset(plane, 0, sizeof(*plane));
1324 EXPORT_SYMBOL(drm_plane_cleanup);
1327 * drm_plane_index - find the index of a registered plane
1328 * @plane: plane to find index for
1330 * Given a registered plane, return the index of that CRTC within a DRM
1331 * device's list of planes.
1333 unsigned int drm_plane_index(struct drm_plane *plane)
1335 unsigned int index = 0;
1336 struct drm_plane *tmp;
1338 list_for_each_entry(tmp, &plane->dev->mode_config.plane_list, head) {
1347 EXPORT_SYMBOL(drm_plane_index);
1350 * drm_plane_force_disable - Forcibly disable a plane
1351 * @plane: plane to disable
1353 * Forces the plane to be disabled.
1355 * Used when the plane's current framebuffer is destroyed,
1356 * and when restoring fbdev mode.
1358 void drm_plane_force_disable(struct drm_plane *plane)
1365 plane->old_fb = plane->fb;
1366 ret = plane->funcs->disable_plane(plane);
1368 DRM_ERROR("failed to disable plane with busy fb\n");
1369 plane->old_fb = NULL;
1372 /* disconnect the plane from the fb and crtc: */
1373 __drm_framebuffer_unreference(plane->old_fb);
1374 plane->old_fb = NULL;
1378 EXPORT_SYMBOL(drm_plane_force_disable);
1380 static int drm_mode_create_standard_properties(struct drm_device *dev)
1382 struct drm_property *prop;
1385 * Standard properties (apply to all connectors)
1387 prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1388 DRM_MODE_PROP_IMMUTABLE,
1392 dev->mode_config.edid_property = prop;
1394 prop = drm_property_create_enum(dev, 0,
1395 "DPMS", drm_dpms_enum_list,
1396 ARRAY_SIZE(drm_dpms_enum_list));
1399 dev->mode_config.dpms_property = prop;
1401 prop = drm_property_create(dev,
1402 DRM_MODE_PROP_BLOB |
1403 DRM_MODE_PROP_IMMUTABLE,
1407 dev->mode_config.path_property = prop;
1409 prop = drm_property_create(dev,
1410 DRM_MODE_PROP_BLOB |
1411 DRM_MODE_PROP_IMMUTABLE,
1415 dev->mode_config.tile_property = prop;
1417 prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1418 "type", drm_plane_type_enum_list,
1419 ARRAY_SIZE(drm_plane_type_enum_list));
1422 dev->mode_config.plane_type_property = prop;
1424 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1425 "SRC_X", 0, UINT_MAX);
1428 dev->mode_config.prop_src_x = prop;
1430 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1431 "SRC_Y", 0, UINT_MAX);
1434 dev->mode_config.prop_src_y = prop;
1436 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1437 "SRC_W", 0, UINT_MAX);
1440 dev->mode_config.prop_src_w = prop;
1442 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1443 "SRC_H", 0, UINT_MAX);
1446 dev->mode_config.prop_src_h = prop;
1448 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1449 "CRTC_X", INT_MIN, INT_MAX);
1452 dev->mode_config.prop_crtc_x = prop;
1454 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
1455 "CRTC_Y", INT_MIN, INT_MAX);
1458 dev->mode_config.prop_crtc_y = prop;
1460 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1461 "CRTC_W", 0, INT_MAX);
1464 dev->mode_config.prop_crtc_w = prop;
1466 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
1467 "CRTC_H", 0, INT_MAX);
1470 dev->mode_config.prop_crtc_h = prop;
1472 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1473 "FB_ID", DRM_MODE_OBJECT_FB);
1476 dev->mode_config.prop_fb_id = prop;
1478 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
1479 "CRTC_ID", DRM_MODE_OBJECT_CRTC);
1482 dev->mode_config.prop_crtc_id = prop;
1488 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1491 * Called by a driver the first time a DVI-I connector is made.
1493 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1495 struct drm_property *dvi_i_selector;
1496 struct drm_property *dvi_i_subconnector;
1498 if (dev->mode_config.dvi_i_select_subconnector_property)
1502 drm_property_create_enum(dev, 0,
1503 "select subconnector",
1504 drm_dvi_i_select_enum_list,
1505 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1506 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1508 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1510 drm_dvi_i_subconnector_enum_list,
1511 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1512 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1516 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1519 * drm_create_tv_properties - create TV specific connector properties
1521 * @num_modes: number of different TV formats (modes) supported
1522 * @modes: array of pointers to strings containing name of each format
1524 * Called by a driver's TV initialization routine, this function creates
1525 * the TV specific connector properties for a given device. Caller is
1526 * responsible for allocating a list of format names and passing them to
1529 int drm_mode_create_tv_properties(struct drm_device *dev,
1530 unsigned int num_modes,
1533 struct drm_property *tv_selector;
1534 struct drm_property *tv_subconnector;
1537 if (dev->mode_config.tv_select_subconnector_property)
1541 * Basic connector properties
1543 tv_selector = drm_property_create_enum(dev, 0,
1544 "select subconnector",
1545 drm_tv_select_enum_list,
1546 ARRAY_SIZE(drm_tv_select_enum_list));
1547 dev->mode_config.tv_select_subconnector_property = tv_selector;
1550 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1552 drm_tv_subconnector_enum_list,
1553 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1554 dev->mode_config.tv_subconnector_property = tv_subconnector;
1557 * Other, TV specific properties: margins & TV modes.
1559 dev->mode_config.tv_left_margin_property =
1560 drm_property_create_range(dev, 0, "left margin", 0, 100);
1562 dev->mode_config.tv_right_margin_property =
1563 drm_property_create_range(dev, 0, "right margin", 0, 100);
1565 dev->mode_config.tv_top_margin_property =
1566 drm_property_create_range(dev, 0, "top margin", 0, 100);
1568 dev->mode_config.tv_bottom_margin_property =
1569 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1571 dev->mode_config.tv_mode_property =
1572 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1574 for (i = 0; i < num_modes; i++)
1575 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1578 dev->mode_config.tv_brightness_property =
1579 drm_property_create_range(dev, 0, "brightness", 0, 100);
1581 dev->mode_config.tv_contrast_property =
1582 drm_property_create_range(dev, 0, "contrast", 0, 100);
1584 dev->mode_config.tv_flicker_reduction_property =
1585 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1587 dev->mode_config.tv_overscan_property =
1588 drm_property_create_range(dev, 0, "overscan", 0, 100);
1590 dev->mode_config.tv_saturation_property =
1591 drm_property_create_range(dev, 0, "saturation", 0, 100);
1593 dev->mode_config.tv_hue_property =
1594 drm_property_create_range(dev, 0, "hue", 0, 100);
1598 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1601 * drm_mode_create_scaling_mode_property - create scaling mode property
1604 * Called by a driver the first time it's needed, must be attached to desired
1607 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1609 struct drm_property *scaling_mode;
1611 if (dev->mode_config.scaling_mode_property)
1615 drm_property_create_enum(dev, 0, "scaling mode",
1616 drm_scaling_mode_enum_list,
1617 ARRAY_SIZE(drm_scaling_mode_enum_list));
1619 dev->mode_config.scaling_mode_property = scaling_mode;
1623 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1626 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1629 * Called by a driver the first time it's needed, must be attached to desired
1633 * Zero on success, negative errno on failure.
1635 int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1637 if (dev->mode_config.aspect_ratio_property)
1640 dev->mode_config.aspect_ratio_property =
1641 drm_property_create_enum(dev, 0, "aspect ratio",
1642 drm_aspect_ratio_enum_list,
1643 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1645 if (dev->mode_config.aspect_ratio_property == NULL)
1650 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1653 * drm_mode_create_dirty_property - create dirty property
1656 * Called by a driver the first time it's needed, must be attached to desired
1659 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1661 struct drm_property *dirty_info;
1663 if (dev->mode_config.dirty_info_property)
1667 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1669 drm_dirty_info_enum_list,
1670 ARRAY_SIZE(drm_dirty_info_enum_list));
1671 dev->mode_config.dirty_info_property = dirty_info;
1675 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1678 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1681 * Create the the suggested x/y offset property for connectors.
1683 int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1685 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1688 dev->mode_config.suggested_x_property =
1689 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1691 dev->mode_config.suggested_y_property =
1692 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1694 if (dev->mode_config.suggested_x_property == NULL ||
1695 dev->mode_config.suggested_y_property == NULL)
1699 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1701 static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
1703 uint32_t total_objects = 0;
1705 total_objects += dev->mode_config.num_crtc;
1706 total_objects += dev->mode_config.num_connector;
1707 total_objects += dev->mode_config.num_encoder;
1708 total_objects += dev->mode_config.num_bridge;
1710 group->id_list = kcalloc(total_objects, sizeof(uint32_t), GFP_KERNEL);
1711 if (!group->id_list)
1714 group->num_crtcs = 0;
1715 group->num_connectors = 0;
1716 group->num_encoders = 0;
1717 group->num_bridges = 0;
1721 void drm_mode_group_destroy(struct drm_mode_group *group)
1723 kfree(group->id_list);
1724 group->id_list = NULL;
1728 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1729 * the drm core's responsibility to set up mode control groups.
1731 int drm_mode_group_init_legacy_group(struct drm_device *dev,
1732 struct drm_mode_group *group)
1734 struct drm_crtc *crtc;
1735 struct drm_encoder *encoder;
1736 struct drm_connector *connector;
1737 struct drm_bridge *bridge;
1740 ret = drm_mode_group_init(dev, group);
1744 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1745 group->id_list[group->num_crtcs++] = crtc->base.id;
1747 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1748 group->id_list[group->num_crtcs + group->num_encoders++] =
1751 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1752 group->id_list[group->num_crtcs + group->num_encoders +
1753 group->num_connectors++] = connector->base.id;
1755 list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
1756 group->id_list[group->num_crtcs + group->num_encoders +
1757 group->num_connectors + group->num_bridges++] =
1762 EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
1764 void drm_reinit_primary_mode_group(struct drm_device *dev)
1766 drm_modeset_lock_all(dev);
1767 drm_mode_group_destroy(&dev->primary->mode_group);
1768 drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
1769 drm_modeset_unlock_all(dev);
1771 EXPORT_SYMBOL(drm_reinit_primary_mode_group);
1774 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1775 * @out: drm_mode_modeinfo struct to return to the user
1776 * @in: drm_display_mode to use
1778 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1781 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1782 const struct drm_display_mode *in)
1784 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1785 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1786 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1787 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1788 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1789 "timing values too large for mode info\n");
1791 out->clock = in->clock;
1792 out->hdisplay = in->hdisplay;
1793 out->hsync_start = in->hsync_start;
1794 out->hsync_end = in->hsync_end;
1795 out->htotal = in->htotal;
1796 out->hskew = in->hskew;
1797 out->vdisplay = in->vdisplay;
1798 out->vsync_start = in->vsync_start;
1799 out->vsync_end = in->vsync_end;
1800 out->vtotal = in->vtotal;
1801 out->vscan = in->vscan;
1802 out->vrefresh = in->vrefresh;
1803 out->flags = in->flags;
1804 out->type = in->type;
1805 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1806 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1810 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1811 * @out: drm_display_mode to return to the user
1812 * @in: drm_mode_modeinfo to use
1814 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1818 * Zero on success, negative errno on failure.
1820 static int drm_crtc_convert_umode(struct drm_display_mode *out,
1821 const struct drm_mode_modeinfo *in)
1823 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1826 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1829 out->clock = in->clock;
1830 out->hdisplay = in->hdisplay;
1831 out->hsync_start = in->hsync_start;
1832 out->hsync_end = in->hsync_end;
1833 out->htotal = in->htotal;
1834 out->hskew = in->hskew;
1835 out->vdisplay = in->vdisplay;
1836 out->vsync_start = in->vsync_start;
1837 out->vsync_end = in->vsync_end;
1838 out->vtotal = in->vtotal;
1839 out->vscan = in->vscan;
1840 out->vrefresh = in->vrefresh;
1841 out->flags = in->flags;
1842 out->type = in->type;
1843 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1844 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1850 * drm_mode_getresources - get graphics configuration
1851 * @dev: drm device for the ioctl
1852 * @data: data pointer for the ioctl
1853 * @file_priv: drm file for the ioctl call
1855 * Construct a set of configuration description structures and return
1856 * them to the user, including CRTC, connector and framebuffer configuration.
1858 * Called by the user via ioctl.
1861 * Zero on success, negative errno on failure.
1863 int drm_mode_getresources(struct drm_device *dev, void *data,
1864 struct drm_file *file_priv)
1866 struct drm_mode_card_res *card_res = data;
1867 struct list_head *lh;
1868 struct drm_framebuffer *fb;
1869 struct drm_connector *connector;
1870 struct drm_crtc *crtc;
1871 struct drm_encoder *encoder;
1873 int connector_count = 0;
1876 int encoder_count = 0;
1878 uint32_t __user *fb_id;
1879 uint32_t __user *crtc_id;
1880 uint32_t __user *connector_id;
1881 uint32_t __user *encoder_id;
1882 struct drm_mode_group *mode_group;
1884 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1888 mutex_lock(&file_priv->fbs_lock);
1890 * For the non-control nodes we need to limit the list of resources
1891 * by IDs in the group list for this node
1893 list_for_each(lh, &file_priv->fbs)
1896 /* handle this in 4 parts */
1898 if (card_res->count_fbs >= fb_count) {
1900 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1901 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1902 if (put_user(fb->base.id, fb_id + copied)) {
1903 mutex_unlock(&file_priv->fbs_lock);
1909 card_res->count_fbs = fb_count;
1910 mutex_unlock(&file_priv->fbs_lock);
1912 /* mode_config.mutex protects the connector list against e.g. DP MST
1913 * connector hot-adding. CRTC/Plane lists are invariant. */
1914 mutex_lock(&dev->mode_config.mutex);
1915 if (!drm_is_primary_client(file_priv)) {
1918 list_for_each(lh, &dev->mode_config.crtc_list)
1921 list_for_each(lh, &dev->mode_config.connector_list)
1924 list_for_each(lh, &dev->mode_config.encoder_list)
1928 mode_group = &file_priv->master->minor->mode_group;
1929 crtc_count = mode_group->num_crtcs;
1930 connector_count = mode_group->num_connectors;
1931 encoder_count = mode_group->num_encoders;
1934 card_res->max_height = dev->mode_config.max_height;
1935 card_res->min_height = dev->mode_config.min_height;
1936 card_res->max_width = dev->mode_config.max_width;
1937 card_res->min_width = dev->mode_config.min_width;
1940 if (card_res->count_crtcs >= crtc_count) {
1942 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1944 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1946 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1947 if (put_user(crtc->base.id, crtc_id + copied)) {
1954 for (i = 0; i < mode_group->num_crtcs; i++) {
1955 if (put_user(mode_group->id_list[i],
1956 crtc_id + copied)) {
1964 card_res->count_crtcs = crtc_count;
1967 if (card_res->count_encoders >= encoder_count) {
1969 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1971 list_for_each_entry(encoder,
1972 &dev->mode_config.encoder_list,
1974 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1976 if (put_user(encoder->base.id, encoder_id +
1984 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1985 if (put_user(mode_group->id_list[i],
1986 encoder_id + copied)) {
1995 card_res->count_encoders = encoder_count;
1998 if (card_res->count_connectors >= connector_count) {
2000 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
2002 list_for_each_entry(connector,
2003 &dev->mode_config.connector_list,
2005 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2008 if (put_user(connector->base.id,
2009 connector_id + copied)) {
2016 int start = mode_group->num_crtcs +
2017 mode_group->num_encoders;
2018 for (i = start; i < start + mode_group->num_connectors; i++) {
2019 if (put_user(mode_group->id_list[i],
2020 connector_id + copied)) {
2028 card_res->count_connectors = connector_count;
2030 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
2031 card_res->count_connectors, card_res->count_encoders);
2034 mutex_unlock(&dev->mode_config.mutex);
2039 * drm_mode_getcrtc - get CRTC configuration
2040 * @dev: drm device for the ioctl
2041 * @data: data pointer for the ioctl
2042 * @file_priv: drm file for the ioctl call
2044 * Construct a CRTC configuration structure to return to the user.
2046 * Called by the user via ioctl.
2049 * Zero on success, negative errno on failure.
2051 int drm_mode_getcrtc(struct drm_device *dev,
2052 void *data, struct drm_file *file_priv)
2054 struct drm_mode_crtc *crtc_resp = data;
2055 struct drm_crtc *crtc;
2057 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2060 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
2064 drm_modeset_lock_crtc(crtc, crtc->primary);
2065 crtc_resp->x = crtc->x;
2066 crtc_resp->y = crtc->y;
2067 crtc_resp->gamma_size = crtc->gamma_size;
2068 if (crtc->primary->fb)
2069 crtc_resp->fb_id = crtc->primary->fb->base.id;
2071 crtc_resp->fb_id = 0;
2073 if (crtc->enabled) {
2075 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
2076 crtc_resp->mode_valid = 1;
2079 crtc_resp->mode_valid = 0;
2081 drm_modeset_unlock_crtc(crtc);
2086 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
2087 const struct drm_file *file_priv)
2090 * If user-space hasn't configured the driver to expose the stereo 3D
2091 * modes, don't expose them.
2093 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
2099 static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
2101 /* For atomic drivers only state objects are synchronously updated and
2102 * protected by modeset locks, so check those first. */
2103 if (connector->state)
2104 return connector->state->best_encoder;
2105 return connector->encoder;
2108 /* helper for getconnector and getproperties ioctls */
2109 static int get_properties(struct drm_mode_object *obj, bool atomic,
2110 uint32_t __user *prop_ptr, uint64_t __user *prop_values,
2111 uint32_t *arg_count_props)
2116 props_count = obj->properties->count;
2118 props_count -= obj->properties->atomic_count;
2120 if ((*arg_count_props >= props_count) && props_count) {
2121 for (i = 0, copied = 0; copied < props_count; i++) {
2122 struct drm_property *prop = obj->properties->properties[i];
2125 if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
2128 ret = drm_object_property_get_value(obj, prop, &val);
2132 if (put_user(prop->base.id, prop_ptr + copied))
2135 if (put_user(val, prop_values + copied))
2141 *arg_count_props = props_count;
2147 * drm_mode_getconnector - get connector configuration
2148 * @dev: drm device for the ioctl
2149 * @data: data pointer for the ioctl
2150 * @file_priv: drm file for the ioctl call
2152 * Construct a connector configuration structure to return to the user.
2154 * Called by the user via ioctl.
2157 * Zero on success, negative errno on failure.
2159 int drm_mode_getconnector(struct drm_device *dev, void *data,
2160 struct drm_file *file_priv)
2162 struct drm_mode_get_connector *out_resp = data;
2163 struct drm_connector *connector;
2164 struct drm_encoder *encoder;
2165 struct drm_display_mode *mode;
2167 int encoders_count = 0;
2171 struct drm_mode_modeinfo u_mode;
2172 struct drm_mode_modeinfo __user *mode_ptr;
2173 uint32_t __user *encoder_ptr;
2175 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2178 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
2180 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
2182 mutex_lock(&dev->mode_config.mutex);
2183 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2185 connector = drm_connector_find(dev, out_resp->connector_id);
2191 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
2192 if (connector->encoder_ids[i] != 0)
2195 if (out_resp->count_modes == 0) {
2196 connector->funcs->fill_modes(connector,
2197 dev->mode_config.max_width,
2198 dev->mode_config.max_height);
2201 /* delayed so we get modes regardless of pre-fill_modes state */
2202 list_for_each_entry(mode, &connector->modes, head)
2203 if (drm_mode_expose_to_userspace(mode, file_priv))
2206 out_resp->connector_id = connector->base.id;
2207 out_resp->connector_type = connector->connector_type;
2208 out_resp->connector_type_id = connector->connector_type_id;
2209 out_resp->mm_width = connector->display_info.width_mm;
2210 out_resp->mm_height = connector->display_info.height_mm;
2211 out_resp->subpixel = connector->display_info.subpixel_order;
2212 out_resp->connection = connector->status;
2213 encoder = drm_connector_get_encoder(connector);
2215 out_resp->encoder_id = encoder->base.id;
2217 out_resp->encoder_id = 0;
2220 * This ioctl is called twice, once to determine how much space is
2221 * needed, and the 2nd time to fill it.
2223 if ((out_resp->count_modes >= mode_count) && mode_count) {
2225 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
2226 list_for_each_entry(mode, &connector->modes, head) {
2227 if (!drm_mode_expose_to_userspace(mode, file_priv))
2230 drm_crtc_convert_to_umode(&u_mode, mode);
2231 if (copy_to_user(mode_ptr + copied,
2232 &u_mode, sizeof(u_mode))) {
2239 out_resp->count_modes = mode_count;
2241 ret = get_properties(&connector->base, file_priv->atomic,
2242 (uint32_t __user *)(unsigned long)(out_resp->props_ptr),
2243 (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr),
2244 &out_resp->count_props);
2248 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2250 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
2251 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2252 if (connector->encoder_ids[i] != 0) {
2253 if (put_user(connector->encoder_ids[i],
2254 encoder_ptr + copied)) {
2262 out_resp->count_encoders = encoders_count;
2265 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2266 mutex_unlock(&dev->mode_config.mutex);
2271 static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2273 struct drm_connector *connector;
2274 struct drm_device *dev = encoder->dev;
2275 bool uses_atomic = false;
2277 /* For atomic drivers only state objects are synchronously updated and
2278 * protected by modeset locks, so check those first. */
2279 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2280 if (!connector->state)
2285 if (connector->state->best_encoder != encoder)
2288 return connector->state->crtc;
2291 /* Don't return stale data (e.g. pending async disable). */
2295 return encoder->crtc;
2299 * drm_mode_getencoder - get encoder configuration
2300 * @dev: drm device for the ioctl
2301 * @data: data pointer for the ioctl
2302 * @file_priv: drm file for the ioctl call
2304 * Construct a encoder configuration structure to return to the user.
2306 * Called by the user via ioctl.
2309 * Zero on success, negative errno on failure.
2311 int drm_mode_getencoder(struct drm_device *dev, void *data,
2312 struct drm_file *file_priv)
2314 struct drm_mode_get_encoder *enc_resp = data;
2315 struct drm_encoder *encoder;
2316 struct drm_crtc *crtc;
2318 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2321 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
2325 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2326 crtc = drm_encoder_get_crtc(encoder);
2328 enc_resp->crtc_id = crtc->base.id;
2329 else if (encoder->crtc)
2330 enc_resp->crtc_id = encoder->crtc->base.id;
2332 enc_resp->crtc_id = 0;
2333 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2335 enc_resp->encoder_type = encoder->encoder_type;
2336 enc_resp->encoder_id = encoder->base.id;
2337 enc_resp->possible_crtcs = encoder->possible_crtcs;
2338 enc_resp->possible_clones = encoder->possible_clones;
2344 * drm_mode_getplane_res - enumerate all plane resources
2347 * @file_priv: DRM file info
2349 * Construct a list of plane ids to return to the user.
2351 * Called by the user via ioctl.
2354 * Zero on success, negative errno on failure.
2356 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2357 struct drm_file *file_priv)
2359 struct drm_mode_get_plane_res *plane_resp = data;
2360 struct drm_mode_config *config;
2361 struct drm_plane *plane;
2362 uint32_t __user *plane_ptr;
2364 unsigned num_planes;
2366 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2369 config = &dev->mode_config;
2371 if (file_priv->universal_planes)
2372 num_planes = config->num_total_plane;
2374 num_planes = config->num_overlay_plane;
2377 * This ioctl is called twice, once to determine how much space is
2378 * needed, and the 2nd time to fill it.
2381 (plane_resp->count_planes >= num_planes)) {
2382 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2384 /* Plane lists are invariant, no locking needed. */
2385 list_for_each_entry(plane, &config->plane_list, head) {
2387 * Unless userspace set the 'universal planes'
2388 * capability bit, only advertise overlays.
2390 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2391 !file_priv->universal_planes)
2394 if (put_user(plane->base.id, plane_ptr + copied))
2399 plane_resp->count_planes = num_planes;
2405 * drm_mode_getplane - get plane configuration
2408 * @file_priv: DRM file info
2410 * Construct a plane configuration structure to return to the user.
2412 * Called by the user via ioctl.
2415 * Zero on success, negative errno on failure.
2417 int drm_mode_getplane(struct drm_device *dev, void *data,
2418 struct drm_file *file_priv)
2420 struct drm_mode_get_plane *plane_resp = data;
2421 struct drm_plane *plane;
2422 uint32_t __user *format_ptr;
2424 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2427 plane = drm_plane_find(dev, plane_resp->plane_id);
2431 drm_modeset_lock(&plane->mutex, NULL);
2433 plane_resp->crtc_id = plane->crtc->base.id;
2435 plane_resp->crtc_id = 0;
2438 plane_resp->fb_id = plane->fb->base.id;
2440 plane_resp->fb_id = 0;
2441 drm_modeset_unlock(&plane->mutex);
2443 plane_resp->plane_id = plane->base.id;
2444 plane_resp->possible_crtcs = plane->possible_crtcs;
2445 plane_resp->gamma_size = 0;
2448 * This ioctl is called twice, once to determine how much space is
2449 * needed, and the 2nd time to fill it.
2451 if (plane->format_count &&
2452 (plane_resp->count_format_types >= plane->format_count)) {
2453 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2454 if (copy_to_user(format_ptr,
2455 plane->format_types,
2456 sizeof(uint32_t) * plane->format_count)) {
2460 plane_resp->count_format_types = plane->format_count;
2466 * setplane_internal - setplane handler for internal callers
2468 * Note that we assume an extra reference has already been taken on fb. If the
2469 * update fails, this reference will be dropped before return; if it succeeds,
2470 * the previous framebuffer (if any) will be unreferenced instead.
2472 * src_{x,y,w,h} are provided in 16.16 fixed point format
2474 static int __setplane_internal(struct drm_plane *plane,
2475 struct drm_crtc *crtc,
2476 struct drm_framebuffer *fb,
2477 int32_t crtc_x, int32_t crtc_y,
2478 uint32_t crtc_w, uint32_t crtc_h,
2479 /* src_{x,y,w,h} values are 16.16 fixed point */
2480 uint32_t src_x, uint32_t src_y,
2481 uint32_t src_w, uint32_t src_h)
2484 unsigned int fb_width, fb_height;
2487 /* No fb means shut it down */
2489 plane->old_fb = plane->fb;
2490 ret = plane->funcs->disable_plane(plane);
2495 plane->old_fb = NULL;
2500 /* Check whether this plane is usable on this CRTC */
2501 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2502 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2507 /* Check whether this plane supports the fb pixel format. */
2508 for (i = 0; i < plane->format_count; i++)
2509 if (fb->pixel_format == plane->format_types[i])
2511 if (i == plane->format_count) {
2512 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2513 drm_get_format_name(fb->pixel_format));
2518 fb_width = fb->width << 16;
2519 fb_height = fb->height << 16;
2521 /* Make sure source coordinates are inside the fb. */
2522 if (src_w > fb_width ||
2523 src_x > fb_width - src_w ||
2524 src_h > fb_height ||
2525 src_y > fb_height - src_h) {
2526 DRM_DEBUG_KMS("Invalid source coordinates "
2527 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2528 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2529 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2530 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2531 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2536 plane->old_fb = plane->fb;
2537 ret = plane->funcs->update_plane(plane, crtc, fb,
2538 crtc_x, crtc_y, crtc_w, crtc_h,
2539 src_x, src_y, src_w, src_h);
2545 plane->old_fb = NULL;
2550 drm_framebuffer_unreference(fb);
2552 drm_framebuffer_unreference(plane->old_fb);
2553 plane->old_fb = NULL;
2558 static int setplane_internal(struct drm_plane *plane,
2559 struct drm_crtc *crtc,
2560 struct drm_framebuffer *fb,
2561 int32_t crtc_x, int32_t crtc_y,
2562 uint32_t crtc_w, uint32_t crtc_h,
2563 /* src_{x,y,w,h} values are 16.16 fixed point */
2564 uint32_t src_x, uint32_t src_y,
2565 uint32_t src_w, uint32_t src_h)
2569 drm_modeset_lock_all(plane->dev);
2570 ret = __setplane_internal(plane, crtc, fb,
2571 crtc_x, crtc_y, crtc_w, crtc_h,
2572 src_x, src_y, src_w, src_h);
2573 drm_modeset_unlock_all(plane->dev);
2579 * drm_mode_setplane - configure a plane's configuration
2581 * @data: ioctl data*
2582 * @file_priv: DRM file info
2584 * Set plane configuration, including placement, fb, scaling, and other factors.
2585 * Or pass a NULL fb to disable (planes may be disabled without providing a
2589 * Zero on success, negative errno on failure.
2591 int drm_mode_setplane(struct drm_device *dev, void *data,
2592 struct drm_file *file_priv)
2594 struct drm_mode_set_plane *plane_req = data;
2595 struct drm_plane *plane;
2596 struct drm_crtc *crtc = NULL;
2597 struct drm_framebuffer *fb = NULL;
2599 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2602 /* Give drivers some help against integer overflows */
2603 if (plane_req->crtc_w > INT_MAX ||
2604 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2605 plane_req->crtc_h > INT_MAX ||
2606 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2607 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2608 plane_req->crtc_w, plane_req->crtc_h,
2609 plane_req->crtc_x, plane_req->crtc_y);
2614 * First, find the plane, crtc, and fb objects. If not available,
2615 * we don't bother to call the driver.
2617 plane = drm_plane_find(dev, plane_req->plane_id);
2619 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2620 plane_req->plane_id);
2624 if (plane_req->fb_id) {
2625 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2627 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2632 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2634 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2635 plane_req->crtc_id);
2641 * setplane_internal will take care of deref'ing either the old or new
2642 * framebuffer depending on success.
2644 return setplane_internal(plane, crtc, fb,
2645 plane_req->crtc_x, plane_req->crtc_y,
2646 plane_req->crtc_w, plane_req->crtc_h,
2647 plane_req->src_x, plane_req->src_y,
2648 plane_req->src_w, plane_req->src_h);
2652 * drm_mode_set_config_internal - helper to call ->set_config
2653 * @set: modeset config to set
2655 * This is a little helper to wrap internal calls to the ->set_config driver
2656 * interface. The only thing it adds is correct refcounting dance.
2659 * Zero on success, negative errno on failure.
2661 int drm_mode_set_config_internal(struct drm_mode_set *set)
2663 struct drm_crtc *crtc = set->crtc;
2664 struct drm_framebuffer *fb;
2665 struct drm_crtc *tmp;
2669 * NOTE: ->set_config can also disable other crtcs (if we steal all
2670 * connectors from it), hence we need to refcount the fbs across all
2671 * crtcs. Atomic modeset will have saner semantics ...
2673 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
2674 tmp->primary->old_fb = tmp->primary->fb;
2678 ret = crtc->funcs->set_config(set);
2680 crtc->primary->crtc = crtc;
2681 crtc->primary->fb = fb;
2684 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
2685 if (tmp->primary->fb)
2686 drm_framebuffer_reference(tmp->primary->fb);
2687 if (tmp->primary->old_fb)
2688 drm_framebuffer_unreference(tmp->primary->old_fb);
2689 tmp->primary->old_fb = NULL;
2694 EXPORT_SYMBOL(drm_mode_set_config_internal);
2697 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
2698 * @mode: mode to query
2699 * @hdisplay: hdisplay value to fill in
2700 * @vdisplay: vdisplay value to fill in
2702 * The vdisplay value will be doubled if the specified mode is a stereo mode of
2703 * the appropriate layout.
2705 void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
2706 int *hdisplay, int *vdisplay)
2708 struct drm_display_mode adjusted;
2710 drm_mode_copy(&adjusted, mode);
2711 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
2712 *hdisplay = adjusted.crtc_hdisplay;
2713 *vdisplay = adjusted.crtc_vdisplay;
2715 EXPORT_SYMBOL(drm_crtc_get_hv_timing);
2718 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2720 * @crtc: CRTC that framebuffer will be displayed on
2723 * @mode: mode that framebuffer will be displayed under
2724 * @fb: framebuffer to check size of
2726 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2728 const struct drm_display_mode *mode,
2729 const struct drm_framebuffer *fb)
2732 int hdisplay, vdisplay;
2734 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
2736 if (crtc->invert_dimensions)
2737 swap(hdisplay, vdisplay);
2739 if (hdisplay > fb->width ||
2740 vdisplay > fb->height ||
2741 x > fb->width - hdisplay ||
2742 y > fb->height - vdisplay) {
2743 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2744 fb->width, fb->height, hdisplay, vdisplay, x, y,
2745 crtc->invert_dimensions ? " (inverted)" : "");
2751 EXPORT_SYMBOL(drm_crtc_check_viewport);
2754 * drm_mode_setcrtc - set CRTC configuration
2755 * @dev: drm device for the ioctl
2756 * @data: data pointer for the ioctl
2757 * @file_priv: drm file for the ioctl call
2759 * Build a new CRTC configuration based on user request.
2761 * Called by the user via ioctl.
2764 * Zero on success, negative errno on failure.
2766 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2767 struct drm_file *file_priv)
2769 struct drm_mode_config *config = &dev->mode_config;
2770 struct drm_mode_crtc *crtc_req = data;
2771 struct drm_crtc *crtc;
2772 struct drm_connector **connector_set = NULL, *connector;
2773 struct drm_framebuffer *fb = NULL;
2774 struct drm_display_mode *mode = NULL;
2775 struct drm_mode_set set;
2776 uint32_t __user *set_connectors_ptr;
2780 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2783 /* For some reason crtc x/y offsets are signed internally. */
2784 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2787 drm_modeset_lock_all(dev);
2788 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2790 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2794 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2796 if (crtc_req->mode_valid) {
2797 /* If we have a mode we need a framebuffer. */
2798 /* If we pass -1, set the mode with the currently bound fb */
2799 if (crtc_req->fb_id == -1) {
2800 if (!crtc->primary->fb) {
2801 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2805 fb = crtc->primary->fb;
2806 /* Make refcounting symmetric with the lookup path. */
2807 drm_framebuffer_reference(fb);
2809 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2811 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2818 mode = drm_mode_create(dev);
2824 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2826 DRM_DEBUG_KMS("Invalid mode\n");
2830 mode->status = drm_mode_validate_basic(mode);
2831 if (mode->status != MODE_OK) {
2836 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2838 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2845 if (crtc_req->count_connectors == 0 && mode) {
2846 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2851 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2852 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2853 crtc_req->count_connectors);
2858 if (crtc_req->count_connectors > 0) {
2861 /* Avoid unbounded kernel memory allocation */
2862 if (crtc_req->count_connectors > config->num_connector) {
2867 connector_set = kmalloc_array(crtc_req->count_connectors,
2868 sizeof(struct drm_connector *),
2870 if (!connector_set) {
2875 for (i = 0; i < crtc_req->count_connectors; i++) {
2876 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2877 if (get_user(out_id, &set_connectors_ptr[i])) {
2882 connector = drm_connector_find(dev, out_id);
2884 DRM_DEBUG_KMS("Connector id %d unknown\n",
2889 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2893 connector_set[i] = connector;
2898 set.x = crtc_req->x;
2899 set.y = crtc_req->y;
2901 set.connectors = connector_set;
2902 set.num_connectors = crtc_req->count_connectors;
2904 ret = drm_mode_set_config_internal(&set);
2908 drm_framebuffer_unreference(fb);
2910 kfree(connector_set);
2911 drm_mode_destroy(dev, mode);
2912 drm_modeset_unlock_all(dev);
2917 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2918 * universal plane handler call
2919 * @crtc: crtc to update cursor for
2920 * @req: data pointer for the ioctl
2921 * @file_priv: drm file for the ioctl call
2923 * Legacy cursor ioctl's work directly with driver buffer handles. To
2924 * translate legacy ioctl calls into universal plane handler calls, we need to
2925 * wrap the native buffer handle in a drm_framebuffer.
2927 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2928 * buffer with a pitch of 4*width; the universal plane interface should be used
2929 * directly in cases where the hardware can support other buffer settings and
2930 * userspace wants to make use of these capabilities.
2933 * Zero on success, negative errno on failure.
2935 static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2936 struct drm_mode_cursor2 *req,
2937 struct drm_file *file_priv)
2939 struct drm_device *dev = crtc->dev;
2940 struct drm_framebuffer *fb = NULL;
2941 struct drm_mode_fb_cmd2 fbreq = {
2942 .width = req->width,
2943 .height = req->height,
2944 .pixel_format = DRM_FORMAT_ARGB8888,
2945 .pitches = { req->width * 4 },
2946 .handles = { req->handle },
2948 int32_t crtc_x, crtc_y;
2949 uint32_t crtc_w = 0, crtc_h = 0;
2950 uint32_t src_w = 0, src_h = 0;
2953 BUG_ON(!crtc->cursor);
2954 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
2957 * Obtain fb we'll be using (either new or existing) and take an extra
2958 * reference to it if fb != null. setplane will take care of dropping
2959 * the reference if the plane update fails.
2961 if (req->flags & DRM_MODE_CURSOR_BO) {
2963 fb = add_framebuffer_internal(dev, &fbreq, file_priv);
2965 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2969 drm_framebuffer_reference(fb);
2974 fb = crtc->cursor->fb;
2976 drm_framebuffer_reference(fb);
2979 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2983 crtc_x = crtc->cursor_x;
2984 crtc_y = crtc->cursor_y;
2989 crtc_h = fb->height;
2990 src_w = fb->width << 16;
2991 src_h = fb->height << 16;
2995 * setplane_internal will take care of deref'ing either the old or new
2996 * framebuffer depending on success.
2998 ret = __setplane_internal(crtc->cursor, crtc, fb,
2999 crtc_x, crtc_y, crtc_w, crtc_h,
3000 0, 0, src_w, src_h);
3002 /* Update successful; save new cursor position, if necessary */
3003 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
3004 crtc->cursor_x = req->x;
3005 crtc->cursor_y = req->y;
3011 static int drm_mode_cursor_common(struct drm_device *dev,
3012 struct drm_mode_cursor2 *req,
3013 struct drm_file *file_priv)
3015 struct drm_crtc *crtc;
3018 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3021 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
3024 crtc = drm_crtc_find(dev, req->crtc_id);
3026 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
3031 * If this crtc has a universal cursor plane, call that plane's update
3032 * handler rather than using legacy cursor handlers.
3034 drm_modeset_lock_crtc(crtc, crtc->cursor);
3036 ret = drm_mode_cursor_universal(crtc, req, file_priv);
3040 if (req->flags & DRM_MODE_CURSOR_BO) {
3041 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
3045 /* Turns off the cursor if handle is 0 */
3046 if (crtc->funcs->cursor_set2)
3047 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
3048 req->width, req->height, req->hot_x, req->hot_y);
3050 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
3051 req->width, req->height);
3054 if (req->flags & DRM_MODE_CURSOR_MOVE) {
3055 if (crtc->funcs->cursor_move) {
3056 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
3063 drm_modeset_unlock_crtc(crtc);
3071 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
3072 * @dev: drm device for the ioctl
3073 * @data: data pointer for the ioctl
3074 * @file_priv: drm file for the ioctl call
3076 * Set the cursor configuration based on user request.
3078 * Called by the user via ioctl.
3081 * Zero on success, negative errno on failure.
3083 int drm_mode_cursor_ioctl(struct drm_device *dev,
3084 void *data, struct drm_file *file_priv)
3086 struct drm_mode_cursor *req = data;
3087 struct drm_mode_cursor2 new_req;
3089 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
3090 new_req.hot_x = new_req.hot_y = 0;
3092 return drm_mode_cursor_common(dev, &new_req, file_priv);
3096 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
3097 * @dev: drm device for the ioctl
3098 * @data: data pointer for the ioctl
3099 * @file_priv: drm file for the ioctl call
3101 * Set the cursor configuration based on user request. This implements the 2nd
3102 * version of the cursor ioctl, which allows userspace to additionally specify
3103 * the hotspot of the pointer.
3105 * Called by the user via ioctl.
3108 * Zero on success, negative errno on failure.
3110 int drm_mode_cursor2_ioctl(struct drm_device *dev,
3111 void *data, struct drm_file *file_priv)
3113 struct drm_mode_cursor2 *req = data;
3115 return drm_mode_cursor_common(dev, req, file_priv);
3119 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
3120 * @bpp: bits per pixels
3121 * @depth: bit depth per pixel
3123 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
3124 * Useful in fbdev emulation code, since that deals in those values.
3126 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
3132 fmt = DRM_FORMAT_C8;
3136 fmt = DRM_FORMAT_XRGB1555;
3138 fmt = DRM_FORMAT_RGB565;
3141 fmt = DRM_FORMAT_RGB888;
3145 fmt = DRM_FORMAT_XRGB8888;
3146 else if (depth == 30)
3147 fmt = DRM_FORMAT_XRGB2101010;
3149 fmt = DRM_FORMAT_ARGB8888;
3152 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3153 fmt = DRM_FORMAT_XRGB8888;
3159 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3162 * drm_mode_addfb - add an FB to the graphics configuration
3163 * @dev: drm device for the ioctl
3164 * @data: data pointer for the ioctl
3165 * @file_priv: drm file for the ioctl call
3167 * Add a new FB to the specified CRTC, given a user request. This is the
3168 * original addfb ioctl which only supported RGB formats.
3170 * Called by the user via ioctl.
3173 * Zero on success, negative errno on failure.
3175 int drm_mode_addfb(struct drm_device *dev,
3176 void *data, struct drm_file *file_priv)
3178 struct drm_mode_fb_cmd *or = data;
3179 struct drm_mode_fb_cmd2 r = {};
3182 /* convert to new format and call new ioctl */
3183 r.fb_id = or->fb_id;
3184 r.width = or->width;
3185 r.height = or->height;
3186 r.pitches[0] = or->pitch;
3187 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3188 r.handles[0] = or->handle;
3190 ret = drm_mode_addfb2(dev, &r, file_priv);
3194 or->fb_id = r.fb_id;
3199 static int format_check(const struct drm_mode_fb_cmd2 *r)
3201 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3205 case DRM_FORMAT_RGB332:
3206 case DRM_FORMAT_BGR233:
3207 case DRM_FORMAT_XRGB4444:
3208 case DRM_FORMAT_XBGR4444:
3209 case DRM_FORMAT_RGBX4444:
3210 case DRM_FORMAT_BGRX4444:
3211 case DRM_FORMAT_ARGB4444:
3212 case DRM_FORMAT_ABGR4444:
3213 case DRM_FORMAT_RGBA4444:
3214 case DRM_FORMAT_BGRA4444:
3215 case DRM_FORMAT_XRGB1555:
3216 case DRM_FORMAT_XBGR1555:
3217 case DRM_FORMAT_RGBX5551:
3218 case DRM_FORMAT_BGRX5551:
3219 case DRM_FORMAT_ARGB1555:
3220 case DRM_FORMAT_ABGR1555:
3221 case DRM_FORMAT_RGBA5551:
3222 case DRM_FORMAT_BGRA5551:
3223 case DRM_FORMAT_RGB565:
3224 case DRM_FORMAT_BGR565:
3225 case DRM_FORMAT_RGB888:
3226 case DRM_FORMAT_BGR888:
3227 case DRM_FORMAT_XRGB8888:
3228 case DRM_FORMAT_XBGR8888:
3229 case DRM_FORMAT_RGBX8888:
3230 case DRM_FORMAT_BGRX8888:
3231 case DRM_FORMAT_ARGB8888:
3232 case DRM_FORMAT_ABGR8888:
3233 case DRM_FORMAT_RGBA8888:
3234 case DRM_FORMAT_BGRA8888:
3235 case DRM_FORMAT_XRGB2101010:
3236 case DRM_FORMAT_XBGR2101010:
3237 case DRM_FORMAT_RGBX1010102:
3238 case DRM_FORMAT_BGRX1010102:
3239 case DRM_FORMAT_ARGB2101010:
3240 case DRM_FORMAT_ABGR2101010:
3241 case DRM_FORMAT_RGBA1010102:
3242 case DRM_FORMAT_BGRA1010102:
3243 case DRM_FORMAT_YUYV:
3244 case DRM_FORMAT_YVYU:
3245 case DRM_FORMAT_UYVY:
3246 case DRM_FORMAT_VYUY:
3247 case DRM_FORMAT_AYUV:
3248 case DRM_FORMAT_NV12:
3249 case DRM_FORMAT_NV21:
3250 case DRM_FORMAT_NV16:
3251 case DRM_FORMAT_NV61:
3252 case DRM_FORMAT_NV24:
3253 case DRM_FORMAT_NV42:
3254 case DRM_FORMAT_YUV410:
3255 case DRM_FORMAT_YVU410:
3256 case DRM_FORMAT_YUV411:
3257 case DRM_FORMAT_YVU411:
3258 case DRM_FORMAT_YUV420:
3259 case DRM_FORMAT_YVU420:
3260 case DRM_FORMAT_YUV422:
3261 case DRM_FORMAT_YVU422:
3262 case DRM_FORMAT_YUV444:
3263 case DRM_FORMAT_YVU444:
3266 DRM_DEBUG_KMS("invalid pixel format %s\n",
3267 drm_get_format_name(r->pixel_format));
3272 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
3274 int ret, hsub, vsub, num_planes, i;
3276 ret = format_check(r);
3278 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3279 drm_get_format_name(r->pixel_format));
3283 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3284 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3285 num_planes = drm_format_num_planes(r->pixel_format);
3287 if (r->width == 0 || r->width % hsub) {
3288 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
3292 if (r->height == 0 || r->height % vsub) {
3293 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
3297 for (i = 0; i < num_planes; i++) {
3298 unsigned int width = r->width / (i != 0 ? hsub : 1);
3299 unsigned int height = r->height / (i != 0 ? vsub : 1);
3300 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
3302 if (!r->handles[i]) {
3303 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
3307 if ((uint64_t) width * cpp > UINT_MAX)
3310 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3313 if (r->pitches[i] < width * cpp) {
3314 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
3322 static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
3323 struct drm_mode_fb_cmd2 *r,
3324 struct drm_file *file_priv)
3326 struct drm_mode_config *config = &dev->mode_config;
3327 struct drm_framebuffer *fb;
3330 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
3331 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
3332 return ERR_PTR(-EINVAL);
3335 if ((config->min_width > r->width) || (r->width > config->max_width)) {
3336 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3337 r->width, config->min_width, config->max_width);
3338 return ERR_PTR(-EINVAL);
3340 if ((config->min_height > r->height) || (r->height > config->max_height)) {
3341 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3342 r->height, config->min_height, config->max_height);
3343 return ERR_PTR(-EINVAL);
3346 ret = framebuffer_check(r);
3348 return ERR_PTR(ret);
3350 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
3352 DRM_DEBUG_KMS("could not create framebuffer\n");
3356 mutex_lock(&file_priv->fbs_lock);
3357 r->fb_id = fb->base.id;
3358 list_add(&fb->filp_head, &file_priv->fbs);
3359 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3360 mutex_unlock(&file_priv->fbs_lock);
3366 * drm_mode_addfb2 - add an FB to the graphics configuration
3367 * @dev: drm device for the ioctl
3368 * @data: data pointer for the ioctl
3369 * @file_priv: drm file for the ioctl call
3371 * Add a new FB to the specified CRTC, given a user request with format. This is
3372 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3373 * and uses fourcc codes as pixel format specifiers.
3375 * Called by the user via ioctl.
3378 * Zero on success, negative errno on failure.
3380 int drm_mode_addfb2(struct drm_device *dev,
3381 void *data, struct drm_file *file_priv)
3383 struct drm_framebuffer *fb;
3385 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3388 fb = add_framebuffer_internal(dev, data, file_priv);
3396 * drm_mode_rmfb - remove an FB from the configuration
3397 * @dev: drm device for the ioctl
3398 * @data: data pointer for the ioctl
3399 * @file_priv: drm file for the ioctl call
3401 * Remove the FB specified by the user.
3403 * Called by the user via ioctl.
3406 * Zero on success, negative errno on failure.
3408 int drm_mode_rmfb(struct drm_device *dev,
3409 void *data, struct drm_file *file_priv)
3411 struct drm_framebuffer *fb = NULL;
3412 struct drm_framebuffer *fbl = NULL;
3413 uint32_t *id = data;
3416 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3419 mutex_lock(&file_priv->fbs_lock);
3420 mutex_lock(&dev->mode_config.fb_lock);
3421 fb = __drm_framebuffer_lookup(dev, *id);
3425 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3431 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3432 __drm_framebuffer_unregister(dev, fb);
3434 list_del_init(&fb->filp_head);
3435 mutex_unlock(&dev->mode_config.fb_lock);
3436 mutex_unlock(&file_priv->fbs_lock);
3438 drm_framebuffer_remove(fb);
3443 mutex_unlock(&dev->mode_config.fb_lock);
3444 mutex_unlock(&file_priv->fbs_lock);
3450 * drm_mode_getfb - get FB info
3451 * @dev: drm device for the ioctl
3452 * @data: data pointer for the ioctl
3453 * @file_priv: drm file for the ioctl call
3455 * Lookup the FB given its ID and return info about it.
3457 * Called by the user via ioctl.
3460 * Zero on success, negative errno on failure.
3462 int drm_mode_getfb(struct drm_device *dev,
3463 void *data, struct drm_file *file_priv)
3465 struct drm_mode_fb_cmd *r = data;
3466 struct drm_framebuffer *fb;
3469 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3472 fb = drm_framebuffer_lookup(dev, r->fb_id);
3476 r->height = fb->height;
3477 r->width = fb->width;
3478 r->depth = fb->depth;
3479 r->bpp = fb->bits_per_pixel;
3480 r->pitch = fb->pitches[0];
3481 if (fb->funcs->create_handle) {
3482 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
3483 drm_is_control_client(file_priv)) {
3484 ret = fb->funcs->create_handle(fb, file_priv,
3487 /* GET_FB() is an unprivileged ioctl so we must not
3488 * return a buffer-handle to non-master processes! For
3489 * backwards-compatibility reasons, we cannot make
3490 * GET_FB() privileged, so just return an invalid handle
3491 * for non-masters. */
3499 drm_framebuffer_unreference(fb);
3505 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3506 * @dev: drm device for the ioctl
3507 * @data: data pointer for the ioctl
3508 * @file_priv: drm file for the ioctl call
3510 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3511 * rectangle list. Generic userspace which does frontbuffer rendering must call
3512 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3513 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3515 * Modesetting drivers which always update the frontbuffer do not need to
3516 * implement the corresponding ->dirty framebuffer callback.
3518 * Called by the user via ioctl.
3521 * Zero on success, negative errno on failure.
3523 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3524 void *data, struct drm_file *file_priv)
3526 struct drm_clip_rect __user *clips_ptr;
3527 struct drm_clip_rect *clips = NULL;
3528 struct drm_mode_fb_dirty_cmd *r = data;
3529 struct drm_framebuffer *fb;
3534 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3537 fb = drm_framebuffer_lookup(dev, r->fb_id);
3541 num_clips = r->num_clips;
3542 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3544 if (!num_clips != !clips_ptr) {
3549 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3551 /* If userspace annotates copy, clips must come in pairs */
3552 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3557 if (num_clips && clips_ptr) {
3558 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3562 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
3568 ret = copy_from_user(clips, clips_ptr,
3569 num_clips * sizeof(*clips));
3576 if (fb->funcs->dirty) {
3577 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3586 drm_framebuffer_unreference(fb);
3593 * drm_fb_release - remove and free the FBs on this file
3594 * @priv: drm file for the ioctl
3596 * Destroy all the FBs associated with @filp.
3598 * Called by the user via ioctl.
3601 * Zero on success, negative errno on failure.
3603 void drm_fb_release(struct drm_file *priv)
3605 struct drm_device *dev = priv->minor->dev;
3606 struct drm_framebuffer *fb, *tfb;
3609 * When the file gets released that means no one else can access the fb
3610 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3611 * avoid upsetting lockdep since the universal cursor code adds a
3612 * framebuffer while holding mutex locks.
3614 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3615 * locks is impossible here since no one else but this function can get
3618 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3620 mutex_lock(&dev->mode_config.fb_lock);
3621 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3622 __drm_framebuffer_unregister(dev, fb);
3623 mutex_unlock(&dev->mode_config.fb_lock);
3625 list_del_init(&fb->filp_head);
3627 /* This will also drop the fpriv->fbs reference. */
3628 drm_framebuffer_remove(fb);
3633 * drm_property_create - create a new property type
3635 * @flags: flags specifying the property type
3636 * @name: name of the property
3637 * @num_values: number of pre-defined values
3639 * This creates a new generic drm property which can then be attached to a drm
3640 * object with drm_object_attach_property. The returned property object must be
3641 * freed with drm_property_destroy.
3643 * Note that the DRM core keeps a per-device list of properties and that, if
3644 * drm_mode_config_cleanup() is called, it will destroy all properties created
3648 * A pointer to the newly created property on success, NULL on failure.
3650 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3651 const char *name, int num_values)
3653 struct drm_property *property = NULL;
3656 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3660 property->dev = dev;
3663 property->values = kcalloc(num_values, sizeof(uint64_t),
3665 if (!property->values)
3669 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3673 property->flags = flags;
3674 property->num_values = num_values;
3675 INIT_LIST_HEAD(&property->enum_list);
3678 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3679 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3682 list_add_tail(&property->head, &dev->mode_config.property_list);
3684 WARN_ON(!drm_property_type_valid(property));
3688 kfree(property->values);
3692 EXPORT_SYMBOL(drm_property_create);
3695 * drm_property_create_enum - create a new enumeration property type
3697 * @flags: flags specifying the property type
3698 * @name: name of the property
3699 * @props: enumeration lists with property values
3700 * @num_values: number of pre-defined values
3702 * This creates a new generic drm property which can then be attached to a drm
3703 * object with drm_object_attach_property. The returned property object must be
3704 * freed with drm_property_destroy.
3706 * Userspace is only allowed to set one of the predefined values for enumeration
3710 * A pointer to the newly created property on success, NULL on failure.
3712 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3714 const struct drm_prop_enum_list *props,
3717 struct drm_property *property;
3720 flags |= DRM_MODE_PROP_ENUM;
3722 property = drm_property_create(dev, flags, name, num_values);
3726 for (i = 0; i < num_values; i++) {
3727 ret = drm_property_add_enum(property, i,
3731 drm_property_destroy(dev, property);
3738 EXPORT_SYMBOL(drm_property_create_enum);
3741 * drm_property_create_bitmask - create a new bitmask property type
3743 * @flags: flags specifying the property type
3744 * @name: name of the property
3745 * @props: enumeration lists with property bitflags
3746 * @num_props: size of the @props array
3747 * @supported_bits: bitmask of all supported enumeration values
3749 * This creates a new bitmask drm property which can then be attached to a drm
3750 * object with drm_object_attach_property. The returned property object must be
3751 * freed with drm_property_destroy.
3753 * Compared to plain enumeration properties userspace is allowed to set any
3754 * or'ed together combination of the predefined property bitflag values
3757 * A pointer to the newly created property on success, NULL on failure.
3759 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3760 int flags, const char *name,
3761 const struct drm_prop_enum_list *props,
3763 uint64_t supported_bits)
3765 struct drm_property *property;
3766 int i, ret, index = 0;
3767 int num_values = hweight64(supported_bits);
3769 flags |= DRM_MODE_PROP_BITMASK;
3771 property = drm_property_create(dev, flags, name, num_values);
3774 for (i = 0; i < num_props; i++) {
3775 if (!(supported_bits & (1ULL << props[i].type)))
3778 if (WARN_ON(index >= num_values)) {
3779 drm_property_destroy(dev, property);
3783 ret = drm_property_add_enum(property, index++,
3787 drm_property_destroy(dev, property);
3794 EXPORT_SYMBOL(drm_property_create_bitmask);
3796 static struct drm_property *property_create_range(struct drm_device *dev,
3797 int flags, const char *name,
3798 uint64_t min, uint64_t max)
3800 struct drm_property *property;
3802 property = drm_property_create(dev, flags, name, 2);
3806 property->values[0] = min;
3807 property->values[1] = max;
3813 * drm_property_create_range - create a new ranged property type
3815 * @flags: flags specifying the property type
3816 * @name: name of the property
3817 * @min: minimum value of the property
3818 * @max: maximum value of the property
3820 * This creates a new generic drm property which can then be attached to a drm
3821 * object with drm_object_attach_property. The returned property object must be
3822 * freed with drm_property_destroy.
3824 * Userspace is allowed to set any integer value in the (min, max) range
3828 * A pointer to the newly created property on success, NULL on failure.
3830 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3832 uint64_t min, uint64_t max)
3834 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3837 EXPORT_SYMBOL(drm_property_create_range);
3839 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3840 int flags, const char *name,
3841 int64_t min, int64_t max)
3843 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3844 name, I642U64(min), I642U64(max));
3846 EXPORT_SYMBOL(drm_property_create_signed_range);
3848 struct drm_property *drm_property_create_object(struct drm_device *dev,
3849 int flags, const char *name, uint32_t type)
3851 struct drm_property *property;
3853 flags |= DRM_MODE_PROP_OBJECT;
3855 property = drm_property_create(dev, flags, name, 1);
3859 property->values[0] = type;
3863 EXPORT_SYMBOL(drm_property_create_object);
3866 * drm_property_add_enum - add a possible value to an enumeration property
3867 * @property: enumeration property to change
3868 * @index: index of the new enumeration
3869 * @value: value of the new enumeration
3870 * @name: symbolic name of the new enumeration
3872 * This functions adds enumerations to a property.
3874 * It's use is deprecated, drivers should use one of the more specific helpers
3875 * to directly create the property with all enumerations already attached.
3878 * Zero on success, error code on failure.
3880 int drm_property_add_enum(struct drm_property *property, int index,
3881 uint64_t value, const char *name)
3883 struct drm_property_enum *prop_enum;
3885 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3886 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
3890 * Bitmask enum properties have the additional constraint of values
3893 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3897 if (!list_empty(&property->enum_list)) {
3898 list_for_each_entry(prop_enum, &property->enum_list, head) {
3899 if (prop_enum->value == value) {
3900 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3901 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3907 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3911 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3912 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3913 prop_enum->value = value;
3915 property->values[index] = value;
3916 list_add_tail(&prop_enum->head, &property->enum_list);
3919 EXPORT_SYMBOL(drm_property_add_enum);
3922 * drm_property_destroy - destroy a drm property
3924 * @property: property to destry
3926 * This function frees a property including any attached resources like
3927 * enumeration values.
3929 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3931 struct drm_property_enum *prop_enum, *pt;
3933 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
3934 list_del(&prop_enum->head);
3938 if (property->num_values)
3939 kfree(property->values);
3940 drm_mode_object_put(dev, &property->base);
3941 list_del(&property->head);
3944 EXPORT_SYMBOL(drm_property_destroy);
3947 * drm_object_attach_property - attach a property to a modeset object
3948 * @obj: drm modeset object
3949 * @property: property to attach
3950 * @init_val: initial value of the property
3952 * This attaches the given property to the modeset object with the given initial
3953 * value. Currently this function cannot fail since the properties are stored in
3954 * a statically sized array.
3956 void drm_object_attach_property(struct drm_mode_object *obj,
3957 struct drm_property *property,
3960 int count = obj->properties->count;
3962 if (count == DRM_OBJECT_MAX_PROPERTY) {
3963 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3964 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3965 "you see this message on the same object type.\n",
3970 obj->properties->properties[count] = property;
3971 obj->properties->values[count] = init_val;
3972 obj->properties->count++;
3973 if (property->flags & DRM_MODE_PROP_ATOMIC)
3974 obj->properties->atomic_count++;
3976 EXPORT_SYMBOL(drm_object_attach_property);
3979 * drm_object_property_set_value - set the value of a property
3980 * @obj: drm mode object to set property value for
3981 * @property: property to set
3982 * @val: value the property should be set to
3984 * This functions sets a given property on a given object. This function only
3985 * changes the software state of the property, it does not call into the
3986 * driver's ->set_property callback.
3989 * Zero on success, error code on failure.
3991 int drm_object_property_set_value(struct drm_mode_object *obj,
3992 struct drm_property *property, uint64_t val)
3996 for (i = 0; i < obj->properties->count; i++) {
3997 if (obj->properties->properties[i] == property) {
3998 obj->properties->values[i] = val;
4005 EXPORT_SYMBOL(drm_object_property_set_value);
4008 * drm_object_property_get_value - retrieve the value of a property
4009 * @obj: drm mode object to get property value from
4010 * @property: property to retrieve
4011 * @val: storage for the property value
4013 * This function retrieves the softare state of the given property for the given
4014 * property. Since there is no driver callback to retrieve the current property
4015 * value this might be out of sync with the hardware, depending upon the driver
4019 * Zero on success, error code on failure.
4021 int drm_object_property_get_value(struct drm_mode_object *obj,
4022 struct drm_property *property, uint64_t *val)
4026 /* read-only properties bypass atomic mechanism and still store
4027 * their value in obj->properties->values[].. mostly to avoid
4028 * having to deal w/ EDID and similar props in atomic paths:
4030 if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
4031 !(property->flags & DRM_MODE_PROP_IMMUTABLE))
4032 return drm_atomic_get_property(obj, property, val);
4034 for (i = 0; i < obj->properties->count; i++) {
4035 if (obj->properties->properties[i] == property) {
4036 *val = obj->properties->values[i];
4043 EXPORT_SYMBOL(drm_object_property_get_value);
4046 * drm_mode_getproperty_ioctl - get the property metadata
4049 * @file_priv: DRM file info
4051 * This function retrieves the metadata for a given property, like the different
4052 * possible values for an enum property or the limits for a range property.
4054 * Blob properties are special
4056 * Called by the user via ioctl.
4059 * Zero on success, negative errno on failure.
4061 int drm_mode_getproperty_ioctl(struct drm_device *dev,
4062 void *data, struct drm_file *file_priv)
4064 struct drm_mode_get_property *out_resp = data;
4065 struct drm_property *property;
4067 int value_count = 0;
4070 struct drm_property_enum *prop_enum;
4071 struct drm_mode_property_enum __user *enum_ptr;
4072 uint64_t __user *values_ptr;
4074 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4077 drm_modeset_lock_all(dev);
4078 property = drm_property_find(dev, out_resp->prop_id);
4084 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4085 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4086 list_for_each_entry(prop_enum, &property->enum_list, head)
4090 value_count = property->num_values;
4092 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
4093 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
4094 out_resp->flags = property->flags;
4096 if ((out_resp->count_values >= value_count) && value_count) {
4097 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
4098 for (i = 0; i < value_count; i++) {
4099 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
4105 out_resp->count_values = value_count;
4107 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
4108 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4109 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
4111 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
4112 list_for_each_entry(prop_enum, &property->enum_list, head) {
4114 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
4119 if (copy_to_user(&enum_ptr[copied].name,
4120 &prop_enum->name, DRM_PROP_NAME_LEN)) {
4127 out_resp->count_enum_blobs = enum_count;
4131 * NOTE: The idea seems to have been to use this to read all the blob
4132 * property values. But nothing ever added them to the corresponding
4133 * list, userspace always used the special-purpose get_blob ioctl to
4134 * read the value for a blob property. It also doesn't make a lot of
4135 * sense to return values here when everything else is just metadata for
4136 * the property itself.
4138 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
4139 out_resp->count_enum_blobs = 0;
4141 drm_modeset_unlock_all(dev);
4145 static struct drm_property_blob *
4146 drm_property_create_blob(struct drm_device *dev, size_t length,
4149 struct drm_property_blob *blob;
4152 if (!length || !data)
4155 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
4159 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
4165 blob->length = length;
4167 memcpy(blob->data, data, length);
4169 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
4173 static void drm_property_destroy_blob(struct drm_device *dev,
4174 struct drm_property_blob *blob)
4176 drm_mode_object_put(dev, &blob->base);
4177 list_del(&blob->head);
4182 * drm_mode_getblob_ioctl - get the contents of a blob property value
4185 * @file_priv: DRM file info
4187 * This function retrieves the contents of a blob property. The value stored in
4188 * an object's blob property is just a normal modeset object id.
4190 * Called by the user via ioctl.
4193 * Zero on success, negative errno on failure.
4195 int drm_mode_getblob_ioctl(struct drm_device *dev,
4196 void *data, struct drm_file *file_priv)
4198 struct drm_mode_get_blob *out_resp = data;
4199 struct drm_property_blob *blob;
4201 void __user *blob_ptr;
4203 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4206 drm_modeset_lock_all(dev);
4207 blob = drm_property_blob_find(dev, out_resp->blob_id);
4213 if (out_resp->length == blob->length) {
4214 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4215 if (copy_to_user(blob_ptr, blob->data, blob->length)) {
4220 out_resp->length = blob->length;
4223 drm_modeset_unlock_all(dev);
4228 * drm_mode_connector_set_path_property - set tile property on connector
4229 * @connector: connector to set property on.
4230 * @path: path to use for property.
4232 * This creates a property to expose to userspace to specify a
4233 * connector path. This is mainly used for DisplayPort MST where
4234 * connectors have a topology and we want to allow userspace to give
4235 * them more meaningful names.
4238 * Zero on success, negative errno on failure.
4240 int drm_mode_connector_set_path_property(struct drm_connector *connector,
4243 struct drm_device *dev = connector->dev;
4244 size_t size = strlen(path) + 1;
4247 connector->path_blob_ptr = drm_property_create_blob(connector->dev,
4249 if (!connector->path_blob_ptr)
4252 ret = drm_object_property_set_value(&connector->base,
4253 dev->mode_config.path_property,
4254 connector->path_blob_ptr->base.id);
4257 EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4260 * drm_mode_connector_set_tile_property - set tile property on connector
4261 * @connector: connector to set property on.
4263 * This looks up the tile information for a connector, and creates a
4264 * property for userspace to parse if it exists. The property is of
4265 * the form of 8 integers using ':' as a separator.
4268 * Zero on success, errno on failure.
4270 int drm_mode_connector_set_tile_property(struct drm_connector *connector)
4272 struct drm_device *dev = connector->dev;
4276 if (connector->tile_blob_ptr)
4277 drm_property_destroy_blob(dev, connector->tile_blob_ptr);
4279 if (!connector->has_tile) {
4280 connector->tile_blob_ptr = NULL;
4281 ret = drm_object_property_set_value(&connector->base,
4282 dev->mode_config.tile_property, 0);
4286 snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4287 connector->tile_group->id, connector->tile_is_single_monitor,
4288 connector->num_h_tile, connector->num_v_tile,
4289 connector->tile_h_loc, connector->tile_v_loc,
4290 connector->tile_h_size, connector->tile_v_size);
4291 size = strlen(tile) + 1;
4293 connector->tile_blob_ptr = drm_property_create_blob(connector->dev,
4295 if (!connector->tile_blob_ptr)
4298 ret = drm_object_property_set_value(&connector->base,
4299 dev->mode_config.tile_property,
4300 connector->tile_blob_ptr->base.id);
4303 EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
4306 * drm_mode_connector_update_edid_property - update the edid property of a connector
4307 * @connector: drm connector
4308 * @edid: new value of the edid property
4310 * This function creates a new blob modeset object and assigns its id to the
4311 * connector's edid property.
4314 * Zero on success, negative errno on failure.
4316 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4317 const struct edid *edid)
4319 struct drm_device *dev = connector->dev;
4323 /* ignore requests to set edid when overridden */
4324 if (connector->override_edid)
4327 if (connector->edid_blob_ptr)
4328 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
4330 /* Delete edid, when there is none. */
4332 connector->edid_blob_ptr = NULL;
4333 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
4337 size = EDID_LENGTH * (1 + edid->extensions);
4338 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
4340 if (!connector->edid_blob_ptr)
4343 ret = drm_object_property_set_value(&connector->base,
4344 dev->mode_config.edid_property,
4345 connector->edid_blob_ptr->base.id);
4349 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4351 /* Some properties could refer to dynamic refcnt'd objects, or things that
4352 * need special locking to handle lifetime issues (ie. to ensure the prop
4353 * value doesn't become invalid part way through the property update due to
4354 * race). The value returned by reference via 'obj' should be passed back
4355 * to drm_property_change_valid_put() after the property is set (and the
4356 * object to which the property is attached has a chance to take it's own
4359 bool drm_property_change_valid_get(struct drm_property *property,
4360 uint64_t value, struct drm_mode_object **ref)
4364 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4369 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
4370 if (value < property->values[0] || value > property->values[1])
4373 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4374 int64_t svalue = U642I64(value);
4376 if (svalue < U642I64(property->values[0]) ||
4377 svalue > U642I64(property->values[1]))
4380 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4381 uint64_t valid_mask = 0;
4383 for (i = 0; i < property->num_values; i++)
4384 valid_mask |= (1ULL << property->values[i]);
4385 return !(value & ~valid_mask);
4386 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
4387 /* Only the driver knows */
4389 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4390 /* a zero value for an object property translates to null: */
4394 /* handle refcnt'd objects specially: */
4395 if (property->values[0] == DRM_MODE_OBJECT_FB) {
4396 struct drm_framebuffer *fb;
4397 fb = drm_framebuffer_lookup(property->dev, value);
4405 return _object_find(property->dev, value, property->values[0]) != NULL;
4409 for (i = 0; i < property->num_values; i++)
4410 if (property->values[i] == value)
4415 void drm_property_change_valid_put(struct drm_property *property,
4416 struct drm_mode_object *ref)
4421 if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4422 if (property->values[0] == DRM_MODE_OBJECT_FB)
4423 drm_framebuffer_unreference(obj_to_fb(ref));
4428 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4431 * @file_priv: DRM file info
4433 * This function sets the current value for a connectors's property. It also
4434 * calls into a driver's ->set_property callback to update the hardware state
4436 * Called by the user via ioctl.
4439 * Zero on success, negative errno on failure.
4441 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4442 void *data, struct drm_file *file_priv)
4444 struct drm_mode_connector_set_property *conn_set_prop = data;
4445 struct drm_mode_obj_set_property obj_set_prop = {
4446 .value = conn_set_prop->value,
4447 .prop_id = conn_set_prop->prop_id,
4448 .obj_id = conn_set_prop->connector_id,
4449 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4452 /* It does all the locking and checking we need */
4453 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
4456 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4457 struct drm_property *property,
4461 struct drm_connector *connector = obj_to_connector(obj);
4463 /* Do DPMS ourselves */
4464 if (property == connector->dev->mode_config.dpms_property) {
4465 if (connector->funcs->dpms)
4466 (*connector->funcs->dpms)(connector, (int)value);
4468 } else if (connector->funcs->set_property)
4469 ret = connector->funcs->set_property(connector, property, value);
4471 /* store the property value if successful */
4473 drm_object_property_set_value(&connector->base, property, value);
4477 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4478 struct drm_property *property,
4482 struct drm_crtc *crtc = obj_to_crtc(obj);
4484 if (crtc->funcs->set_property)
4485 ret = crtc->funcs->set_property(crtc, property, value);
4487 drm_object_property_set_value(obj, property, value);
4493 * drm_mode_plane_set_obj_prop - set the value of a property
4494 * @plane: drm plane object to set property value for
4495 * @property: property to set
4496 * @value: value the property should be set to
4498 * This functions sets a given property on a given plane object. This function
4499 * calls the driver's ->set_property callback and changes the software state of
4500 * the property if the callback succeeds.
4503 * Zero on success, error code on failure.
4505 int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4506 struct drm_property *property,
4510 struct drm_mode_object *obj = &plane->base;
4512 if (plane->funcs->set_property)
4513 ret = plane->funcs->set_property(plane, property, value);
4515 drm_object_property_set_value(obj, property, value);
4519 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4522 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4525 * @file_priv: DRM file info
4527 * This function retrieves the current value for an object's property. Compared
4528 * to the connector specific ioctl this one is extended to also work on crtc and
4531 * Called by the user via ioctl.
4534 * Zero on success, negative errno on failure.
4536 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4537 struct drm_file *file_priv)
4539 struct drm_mode_obj_get_properties *arg = data;
4540 struct drm_mode_object *obj;
4543 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4546 drm_modeset_lock_all(dev);
4548 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4553 if (!obj->properties) {
4558 ret = get_properties(obj, file_priv->atomic,
4559 (uint32_t __user *)(unsigned long)(arg->props_ptr),
4560 (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
4564 drm_modeset_unlock_all(dev);
4569 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4572 * @file_priv: DRM file info
4574 * This function sets the current value for an object's property. It also calls
4575 * into a driver's ->set_property callback to update the hardware state.
4576 * Compared to the connector specific ioctl this one is extended to also work on
4577 * crtc and plane objects.
4579 * Called by the user via ioctl.
4582 * Zero on success, negative errno on failure.
4584 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4585 struct drm_file *file_priv)
4587 struct drm_mode_obj_set_property *arg = data;
4588 struct drm_mode_object *arg_obj;
4589 struct drm_mode_object *prop_obj;
4590 struct drm_property *property;
4591 int i, ret = -EINVAL;
4592 struct drm_mode_object *ref;
4594 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4597 drm_modeset_lock_all(dev);
4599 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4604 if (!arg_obj->properties)
4607 for (i = 0; i < arg_obj->properties->count; i++)
4608 if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
4611 if (i == arg_obj->properties->count)
4614 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4615 DRM_MODE_OBJECT_PROPERTY);
4620 property = obj_to_property(prop_obj);
4622 if (!drm_property_change_valid_get(property, arg->value, &ref))
4625 switch (arg_obj->type) {
4626 case DRM_MODE_OBJECT_CONNECTOR:
4627 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4630 case DRM_MODE_OBJECT_CRTC:
4631 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4633 case DRM_MODE_OBJECT_PLANE:
4634 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
4635 property, arg->value);
4639 drm_property_change_valid_put(property, ref);
4642 drm_modeset_unlock_all(dev);
4647 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4648 * @connector: connector to attach
4649 * @encoder: encoder to attach @connector to
4651 * This function links up a connector to an encoder. Note that the routing
4652 * restrictions between encoders and crtcs are exposed to userspace through the
4653 * possible_clones and possible_crtcs bitmasks.
4656 * Zero on success, negative errno on failure.
4658 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4659 struct drm_encoder *encoder)
4663 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4664 if (connector->encoder_ids[i] == 0) {
4665 connector->encoder_ids[i] = encoder->base.id;
4671 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4674 * drm_mode_crtc_set_gamma_size - set the gamma table size
4675 * @crtc: CRTC to set the gamma table size for
4676 * @gamma_size: size of the gamma table
4678 * Drivers which support gamma tables should set this to the supported gamma
4679 * table size when initializing the CRTC. Currently the drm core only supports a
4680 * fixed gamma table size.
4683 * Zero on success, negative errno on failure.
4685 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
4688 crtc->gamma_size = gamma_size;
4690 crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
4692 if (!crtc->gamma_store) {
4693 crtc->gamma_size = 0;
4699 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
4702 * drm_mode_gamma_set_ioctl - set the gamma table
4705 * @file_priv: DRM file info
4707 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4708 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4710 * Called by the user via ioctl.
4713 * Zero on success, negative errno on failure.
4715 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
4716 void *data, struct drm_file *file_priv)
4718 struct drm_mode_crtc_lut *crtc_lut = data;
4719 struct drm_crtc *crtc;
4720 void *r_base, *g_base, *b_base;
4724 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4727 drm_modeset_lock_all(dev);
4728 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4734 if (crtc->funcs->gamma_set == NULL) {
4739 /* memcpy into gamma store */
4740 if (crtc_lut->gamma_size != crtc->gamma_size) {
4745 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4746 r_base = crtc->gamma_store;
4747 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4752 g_base = r_base + size;
4753 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4758 b_base = g_base + size;
4759 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4764 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
4767 drm_modeset_unlock_all(dev);
4773 * drm_mode_gamma_get_ioctl - get the gamma table
4776 * @file_priv: DRM file info
4778 * Copy the current gamma table into the storage provided. This also provides
4779 * the gamma table size the driver expects, which can be used to size the
4780 * allocated storage.
4782 * Called by the user via ioctl.
4785 * Zero on success, negative errno on failure.
4787 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4788 void *data, struct drm_file *file_priv)
4790 struct drm_mode_crtc_lut *crtc_lut = data;
4791 struct drm_crtc *crtc;
4792 void *r_base, *g_base, *b_base;
4796 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4799 drm_modeset_lock_all(dev);
4800 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4806 /* memcpy into gamma store */
4807 if (crtc_lut->gamma_size != crtc->gamma_size) {
4812 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4813 r_base = crtc->gamma_store;
4814 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4819 g_base = r_base + size;
4820 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4825 b_base = g_base + size;
4826 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4831 drm_modeset_unlock_all(dev);
4836 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4839 * @file_priv: DRM file info
4841 * This schedules an asynchronous update on a given CRTC, called page flip.
4842 * Optionally a drm event is generated to signal the completion of the event.
4843 * Generic drivers cannot assume that a pageflip with changed framebuffer
4844 * properties (including driver specific metadata like tiling layout) will work,
4845 * but some drivers support e.g. pixel format changes through the pageflip
4848 * Called by the user via ioctl.
4851 * Zero on success, negative errno on failure.
4853 int drm_mode_page_flip_ioctl(struct drm_device *dev,
4854 void *data, struct drm_file *file_priv)
4856 struct drm_mode_crtc_page_flip *page_flip = data;
4857 struct drm_crtc *crtc;
4858 struct drm_framebuffer *fb = NULL;
4859 struct drm_pending_vblank_event *e = NULL;
4860 unsigned long flags;
4863 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4864 page_flip->reserved != 0)
4867 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4870 crtc = drm_crtc_find(dev, page_flip->crtc_id);
4874 drm_modeset_lock_crtc(crtc, crtc->primary);
4875 if (crtc->primary->fb == NULL) {
4876 /* The framebuffer is currently unbound, presumably
4877 * due to a hotplug event, that userspace has not
4884 if (crtc->funcs->page_flip == NULL)
4887 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
4893 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4897 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
4898 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4903 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4905 spin_lock_irqsave(&dev->event_lock, flags);
4906 if (file_priv->event_space < sizeof(e->event)) {
4907 spin_unlock_irqrestore(&dev->event_lock, flags);
4910 file_priv->event_space -= sizeof(e->event);
4911 spin_unlock_irqrestore(&dev->event_lock, flags);
4913 e = kzalloc(sizeof(*e), GFP_KERNEL);
4915 spin_lock_irqsave(&dev->event_lock, flags);
4916 file_priv->event_space += sizeof(e->event);
4917 spin_unlock_irqrestore(&dev->event_lock, flags);
4921 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
4922 e->event.base.length = sizeof(e->event);
4923 e->event.user_data = page_flip->user_data;
4924 e->base.event = &e->event.base;
4925 e->base.file_priv = file_priv;
4927 (void (*) (struct drm_pending_event *)) kfree;
4930 crtc->primary->old_fb = crtc->primary->fb;
4931 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
4933 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4934 spin_lock_irqsave(&dev->event_lock, flags);
4935 file_priv->event_space += sizeof(e->event);
4936 spin_unlock_irqrestore(&dev->event_lock, flags);
4939 /* Keep the old fb, don't unref it. */
4940 crtc->primary->old_fb = NULL;
4943 * Warn if the driver hasn't properly updated the crtc->fb
4944 * field to reflect that the new framebuffer is now used.
4945 * Failing to do so will screw with the reference counting
4948 WARN_ON(crtc->primary->fb != fb);
4949 /* Unref only the old framebuffer. */
4955 drm_framebuffer_unreference(fb);
4956 if (crtc->primary->old_fb)
4957 drm_framebuffer_unreference(crtc->primary->old_fb);
4958 crtc->primary->old_fb = NULL;
4959 drm_modeset_unlock_crtc(crtc);
4965 * drm_mode_config_reset - call ->reset callbacks
4968 * This functions calls all the crtc's, encoder's and connector's ->reset
4969 * callback. Drivers can use this in e.g. their driver load or resume code to
4970 * reset hardware and software state.
4972 void drm_mode_config_reset(struct drm_device *dev)
4974 struct drm_crtc *crtc;
4975 struct drm_plane *plane;
4976 struct drm_encoder *encoder;
4977 struct drm_connector *connector;
4979 list_for_each_entry(plane, &dev->mode_config.plane_list, head)
4980 if (plane->funcs->reset)
4981 plane->funcs->reset(plane);
4983 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4984 if (crtc->funcs->reset)
4985 crtc->funcs->reset(crtc);
4987 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4988 if (encoder->funcs->reset)
4989 encoder->funcs->reset(encoder);
4991 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4992 connector->status = connector_status_unknown;
4994 if (connector->funcs->reset)
4995 connector->funcs->reset(connector);
4998 EXPORT_SYMBOL(drm_mode_config_reset);
5001 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
5004 * @file_priv: DRM file info
5006 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
5007 * TTM or something else entirely) and returns the resulting buffer handle. This
5008 * handle can then be wrapped up into a framebuffer modeset object.
5010 * Note that userspace is not allowed to use such objects for render
5011 * acceleration - drivers must create their own private ioctls for such a use
5014 * Called by the user via ioctl.
5017 * Zero on success, negative errno on failure.
5019 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
5020 void *data, struct drm_file *file_priv)
5022 struct drm_mode_create_dumb *args = data;
5023 u32 cpp, stride, size;
5025 if (!dev->driver->dumb_create)
5027 if (!args->width || !args->height || !args->bpp)
5030 /* overflow checks for 32bit size calculations */
5031 /* NOTE: DIV_ROUND_UP() can overflow */
5032 cpp = DIV_ROUND_UP(args->bpp, 8);
5033 if (!cpp || cpp > 0xffffffffU / args->width)
5035 stride = cpp * args->width;
5036 if (args->height > 0xffffffffU / stride)
5039 /* test for wrap-around */
5040 size = args->height * stride;
5041 if (PAGE_ALIGN(size) == 0)
5045 * handle, pitch and size are output parameters. Zero them out to
5046 * prevent drivers from accidentally using uninitialized data. Since
5047 * not all existing userspace is clearing these fields properly we
5048 * cannot reject IOCTL with garbage in them.
5054 return dev->driver->dumb_create(file_priv, dev, args);
5058 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
5061 * @file_priv: DRM file info
5063 * Allocate an offset in the drm device node's address space to be able to
5064 * memory map a dumb buffer.
5066 * Called by the user via ioctl.
5069 * Zero on success, negative errno on failure.
5071 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
5072 void *data, struct drm_file *file_priv)
5074 struct drm_mode_map_dumb *args = data;
5076 /* call driver ioctl to get mmap offset */
5077 if (!dev->driver->dumb_map_offset)
5080 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
5084 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
5087 * @file_priv: DRM file info
5089 * This destroys the userspace handle for the given dumb backing storage buffer.
5090 * Since buffer objects must be reference counted in the kernel a buffer object
5091 * won't be immediately freed if a framebuffer modeset object still uses it.
5093 * Called by the user via ioctl.
5096 * Zero on success, negative errno on failure.
5098 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
5099 void *data, struct drm_file *file_priv)
5101 struct drm_mode_destroy_dumb *args = data;
5103 if (!dev->driver->dumb_destroy)
5106 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
5110 * drm_fb_get_bpp_depth - get the bpp/depth values for format
5111 * @format: pixel format (DRM_FORMAT_*)
5112 * @depth: storage for the depth value
5113 * @bpp: storage for the bpp value
5115 * This only supports RGB formats here for compat with code that doesn't use
5116 * pixel formats directly yet.
5118 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
5123 case DRM_FORMAT_RGB332:
5124 case DRM_FORMAT_BGR233:
5128 case DRM_FORMAT_XRGB1555:
5129 case DRM_FORMAT_XBGR1555:
5130 case DRM_FORMAT_RGBX5551:
5131 case DRM_FORMAT_BGRX5551:
5132 case DRM_FORMAT_ARGB1555:
5133 case DRM_FORMAT_ABGR1555:
5134 case DRM_FORMAT_RGBA5551:
5135 case DRM_FORMAT_BGRA5551:
5139 case DRM_FORMAT_RGB565:
5140 case DRM_FORMAT_BGR565:
5144 case DRM_FORMAT_RGB888:
5145 case DRM_FORMAT_BGR888:
5149 case DRM_FORMAT_XRGB8888:
5150 case DRM_FORMAT_XBGR8888:
5151 case DRM_FORMAT_RGBX8888:
5152 case DRM_FORMAT_BGRX8888:
5156 case DRM_FORMAT_XRGB2101010:
5157 case DRM_FORMAT_XBGR2101010:
5158 case DRM_FORMAT_RGBX1010102:
5159 case DRM_FORMAT_BGRX1010102:
5160 case DRM_FORMAT_ARGB2101010:
5161 case DRM_FORMAT_ABGR2101010:
5162 case DRM_FORMAT_RGBA1010102:
5163 case DRM_FORMAT_BGRA1010102:
5167 case DRM_FORMAT_ARGB8888:
5168 case DRM_FORMAT_ABGR8888:
5169 case DRM_FORMAT_RGBA8888:
5170 case DRM_FORMAT_BGRA8888:
5175 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5176 drm_get_format_name(format));
5182 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
5185 * drm_format_num_planes - get the number of planes for format
5186 * @format: pixel format (DRM_FORMAT_*)
5189 * The number of planes used by the specified pixel format.
5191 int drm_format_num_planes(uint32_t format)
5194 case DRM_FORMAT_YUV410:
5195 case DRM_FORMAT_YVU410:
5196 case DRM_FORMAT_YUV411:
5197 case DRM_FORMAT_YVU411:
5198 case DRM_FORMAT_YUV420:
5199 case DRM_FORMAT_YVU420:
5200 case DRM_FORMAT_YUV422:
5201 case DRM_FORMAT_YVU422:
5202 case DRM_FORMAT_YUV444:
5203 case DRM_FORMAT_YVU444:
5205 case DRM_FORMAT_NV12:
5206 case DRM_FORMAT_NV21:
5207 case DRM_FORMAT_NV16:
5208 case DRM_FORMAT_NV61:
5209 case DRM_FORMAT_NV24:
5210 case DRM_FORMAT_NV42:
5216 EXPORT_SYMBOL(drm_format_num_planes);
5219 * drm_format_plane_cpp - determine the bytes per pixel value
5220 * @format: pixel format (DRM_FORMAT_*)
5221 * @plane: plane index
5224 * The bytes per pixel value for the specified plane.
5226 int drm_format_plane_cpp(uint32_t format, int plane)
5231 if (plane >= drm_format_num_planes(format))
5235 case DRM_FORMAT_YUYV:
5236 case DRM_FORMAT_YVYU:
5237 case DRM_FORMAT_UYVY:
5238 case DRM_FORMAT_VYUY:
5240 case DRM_FORMAT_NV12:
5241 case DRM_FORMAT_NV21:
5242 case DRM_FORMAT_NV16:
5243 case DRM_FORMAT_NV61:
5244 case DRM_FORMAT_NV24:
5245 case DRM_FORMAT_NV42:
5246 return plane ? 2 : 1;
5247 case DRM_FORMAT_YUV410:
5248 case DRM_FORMAT_YVU410:
5249 case DRM_FORMAT_YUV411:
5250 case DRM_FORMAT_YVU411:
5251 case DRM_FORMAT_YUV420:
5252 case DRM_FORMAT_YVU420:
5253 case DRM_FORMAT_YUV422:
5254 case DRM_FORMAT_YVU422:
5255 case DRM_FORMAT_YUV444:
5256 case DRM_FORMAT_YVU444:
5259 drm_fb_get_bpp_depth(format, &depth, &bpp);
5263 EXPORT_SYMBOL(drm_format_plane_cpp);
5266 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5267 * @format: pixel format (DRM_FORMAT_*)
5270 * The horizontal chroma subsampling factor for the
5271 * specified pixel format.
5273 int drm_format_horz_chroma_subsampling(uint32_t format)
5276 case DRM_FORMAT_YUV411:
5277 case DRM_FORMAT_YVU411:
5278 case DRM_FORMAT_YUV410:
5279 case DRM_FORMAT_YVU410:
5281 case DRM_FORMAT_YUYV:
5282 case DRM_FORMAT_YVYU:
5283 case DRM_FORMAT_UYVY:
5284 case DRM_FORMAT_VYUY:
5285 case DRM_FORMAT_NV12:
5286 case DRM_FORMAT_NV21:
5287 case DRM_FORMAT_NV16:
5288 case DRM_FORMAT_NV61:
5289 case DRM_FORMAT_YUV422:
5290 case DRM_FORMAT_YVU422:
5291 case DRM_FORMAT_YUV420:
5292 case DRM_FORMAT_YVU420:
5298 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5301 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5302 * @format: pixel format (DRM_FORMAT_*)
5305 * The vertical chroma subsampling factor for the
5306 * specified pixel format.
5308 int drm_format_vert_chroma_subsampling(uint32_t format)
5311 case DRM_FORMAT_YUV410:
5312 case DRM_FORMAT_YVU410:
5314 case DRM_FORMAT_YUV420:
5315 case DRM_FORMAT_YVU420:
5316 case DRM_FORMAT_NV12:
5317 case DRM_FORMAT_NV21:
5323 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
5326 * drm_rotation_simplify() - Try to simplify the rotation
5327 * @rotation: Rotation to be simplified
5328 * @supported_rotations: Supported rotations
5330 * Attempt to simplify the rotation to a form that is supported.
5331 * Eg. if the hardware supports everything except DRM_REFLECT_X
5332 * one could call this function like this:
5334 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5335 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5336 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5338 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5339 * transforms the hardware supports, this function may not
5340 * be able to produce a supported transform, so the caller should
5341 * check the result afterwards.
5343 unsigned int drm_rotation_simplify(unsigned int rotation,
5344 unsigned int supported_rotations)
5346 if (rotation & ~supported_rotations) {
5347 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5348 rotation = (rotation & ~0xf) | BIT((ffs(rotation & 0xf) + 1) % 4);
5353 EXPORT_SYMBOL(drm_rotation_simplify);
5356 * drm_mode_config_init - initialize DRM mode_configuration structure
5359 * Initialize @dev's mode_config structure, used for tracking the graphics
5360 * configuration of @dev.
5362 * Since this initializes the modeset locks, no locking is possible. Which is no
5363 * problem, since this should happen single threaded at init time. It is the
5364 * driver's problem to ensure this guarantee.
5367 void drm_mode_config_init(struct drm_device *dev)
5369 mutex_init(&dev->mode_config.mutex);
5370 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
5371 mutex_init(&dev->mode_config.idr_mutex);
5372 mutex_init(&dev->mode_config.fb_lock);
5373 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5374 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5375 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5376 INIT_LIST_HEAD(&dev->mode_config.bridge_list);
5377 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5378 INIT_LIST_HEAD(&dev->mode_config.property_list);
5379 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5380 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5381 idr_init(&dev->mode_config.crtc_idr);
5382 idr_init(&dev->mode_config.tile_idr);
5384 drm_modeset_lock_all(dev);
5385 drm_mode_create_standard_properties(dev);
5386 drm_modeset_unlock_all(dev);
5388 /* Just to be sure */
5389 dev->mode_config.num_fb = 0;
5390 dev->mode_config.num_connector = 0;
5391 dev->mode_config.num_crtc = 0;
5392 dev->mode_config.num_encoder = 0;
5393 dev->mode_config.num_overlay_plane = 0;
5394 dev->mode_config.num_total_plane = 0;
5396 EXPORT_SYMBOL(drm_mode_config_init);
5399 * drm_mode_config_cleanup - free up DRM mode_config info
5402 * Free up all the connectors and CRTCs associated with this DRM device, then
5403 * free up the framebuffers and associated buffer objects.
5405 * Note that since this /should/ happen single-threaded at driver/device
5406 * teardown time, no locking is required. It's the driver's job to ensure that
5407 * this guarantee actually holds true.
5409 * FIXME: cleanup any dangling user buffer objects too
5411 void drm_mode_config_cleanup(struct drm_device *dev)
5413 struct drm_connector *connector, *ot;
5414 struct drm_crtc *crtc, *ct;
5415 struct drm_encoder *encoder, *enct;
5416 struct drm_bridge *bridge, *brt;
5417 struct drm_framebuffer *fb, *fbt;
5418 struct drm_property *property, *pt;
5419 struct drm_property_blob *blob, *bt;
5420 struct drm_plane *plane, *plt;
5422 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5424 encoder->funcs->destroy(encoder);
5427 list_for_each_entry_safe(bridge, brt,
5428 &dev->mode_config.bridge_list, head) {
5429 bridge->funcs->destroy(bridge);
5432 list_for_each_entry_safe(connector, ot,
5433 &dev->mode_config.connector_list, head) {
5434 connector->funcs->destroy(connector);
5437 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5439 drm_property_destroy(dev, property);
5442 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5444 drm_property_destroy_blob(dev, blob);
5448 * Single-threaded teardown context, so it's not required to grab the
5449 * fb_lock to protect against concurrent fb_list access. Contrary, it
5450 * would actually deadlock with the drm_framebuffer_cleanup function.
5452 * Also, if there are any framebuffers left, that's a driver leak now,
5453 * so politely WARN about this.
5455 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5456 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5457 drm_framebuffer_remove(fb);
5460 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5462 plane->funcs->destroy(plane);
5465 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5466 crtc->funcs->destroy(crtc);
5469 idr_destroy(&dev->mode_config.tile_idr);
5470 idr_destroy(&dev->mode_config.crtc_idr);
5471 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
5473 EXPORT_SYMBOL(drm_mode_config_cleanup);
5475 struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5476 unsigned int supported_rotations)
5478 static const struct drm_prop_enum_list props[] = {
5479 { DRM_ROTATE_0, "rotate-0" },
5480 { DRM_ROTATE_90, "rotate-90" },
5481 { DRM_ROTATE_180, "rotate-180" },
5482 { DRM_ROTATE_270, "rotate-270" },
5483 { DRM_REFLECT_X, "reflect-x" },
5484 { DRM_REFLECT_Y, "reflect-y" },
5487 return drm_property_create_bitmask(dev, 0, "rotation",
5488 props, ARRAY_SIZE(props),
5489 supported_rotations);
5491 EXPORT_SYMBOL(drm_mode_create_rotation_property);
5496 * Tile groups are used to represent tiled monitors with a unique
5497 * integer identifier. Tiled monitors using DisplayID v1.3 have
5498 * a unique 8-byte handle, we store this in a tile group, so we
5499 * have a common identifier for all tiles in a monitor group.
5501 static void drm_tile_group_free(struct kref *kref)
5503 struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
5504 struct drm_device *dev = tg->dev;
5505 mutex_lock(&dev->mode_config.idr_mutex);
5506 idr_remove(&dev->mode_config.tile_idr, tg->id);
5507 mutex_unlock(&dev->mode_config.idr_mutex);
5512 * drm_mode_put_tile_group - drop a reference to a tile group.
5514 * @tg: tile group to drop reference to.
5516 * drop reference to tile group and free if 0.
5518 void drm_mode_put_tile_group(struct drm_device *dev,
5519 struct drm_tile_group *tg)
5521 kref_put(&tg->refcount, drm_tile_group_free);
5525 * drm_mode_get_tile_group - get a reference to an existing tile group
5527 * @topology: 8-bytes unique per monitor.
5529 * Use the unique bytes to get a reference to an existing tile group.
5532 * tile group or NULL if not found.
5534 struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
5537 struct drm_tile_group *tg;
5539 mutex_lock(&dev->mode_config.idr_mutex);
5540 idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
5541 if (!memcmp(tg->group_data, topology, 8)) {
5542 if (!kref_get_unless_zero(&tg->refcount))
5544 mutex_unlock(&dev->mode_config.idr_mutex);
5548 mutex_unlock(&dev->mode_config.idr_mutex);
5553 * drm_mode_create_tile_group - create a tile group from a displayid description
5555 * @topology: 8-bytes unique per monitor.
5557 * Create a tile group for the unique monitor, and get a unique
5558 * identifier for the tile group.
5561 * new tile group or error.
5563 struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
5566 struct drm_tile_group *tg;
5569 tg = kzalloc(sizeof(*tg), GFP_KERNEL);
5571 return ERR_PTR(-ENOMEM);
5573 kref_init(&tg->refcount);
5574 memcpy(tg->group_data, topology, 8);
5577 mutex_lock(&dev->mode_config.idr_mutex);
5578 ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
5586 mutex_unlock(&dev->mode_config.idr_mutex);