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>
41 #include "drm_crtc_internal.h"
44 * drm_modeset_lock_all - take all modeset locks
47 * This function takes all modeset locks, suitable where a more fine-grained
48 * scheme isn't (yet) implemented. Locks must be dropped with
49 * drm_modeset_unlock_all.
51 void drm_modeset_lock_all(struct drm_device *dev)
53 struct drm_crtc *crtc;
55 mutex_lock(&dev->mode_config.mutex);
57 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
58 mutex_lock_nest_lock(&crtc->mutex, &dev->mode_config.mutex);
60 EXPORT_SYMBOL(drm_modeset_lock_all);
63 * drm_modeset_unlock_all - drop all modeset locks
66 * This function drop all modeset locks taken by drm_modeset_lock_all.
68 void drm_modeset_unlock_all(struct drm_device *dev)
70 struct drm_crtc *crtc;
72 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
73 mutex_unlock(&crtc->mutex);
75 mutex_unlock(&dev->mode_config.mutex);
77 EXPORT_SYMBOL(drm_modeset_unlock_all);
80 * drm_warn_on_modeset_not_all_locked - check that all modeset locks are locked
83 * Useful as a debug assert.
85 void drm_warn_on_modeset_not_all_locked(struct drm_device *dev)
87 struct drm_crtc *crtc;
89 /* Locking is currently fubar in the panic handler. */
93 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
94 WARN_ON(!mutex_is_locked(&crtc->mutex));
96 WARN_ON(!mutex_is_locked(&dev->mode_config.mutex));
98 EXPORT_SYMBOL(drm_warn_on_modeset_not_all_locked);
100 /* Avoid boilerplate. I'm tired of typing. */
101 #define DRM_ENUM_NAME_FN(fnname, list) \
102 const char *fnname(int val) \
105 for (i = 0; i < ARRAY_SIZE(list); i++) { \
106 if (list[i].type == val) \
107 return list[i].name; \
109 return "(unknown)"; \
115 static const struct drm_prop_enum_list drm_dpms_enum_list[] =
116 { { DRM_MODE_DPMS_ON, "On" },
117 { DRM_MODE_DPMS_STANDBY, "Standby" },
118 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
119 { DRM_MODE_DPMS_OFF, "Off" }
122 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
124 static const struct drm_prop_enum_list drm_plane_type_enum_list[] =
126 { DRM_PLANE_TYPE_OVERLAY, "Overlay" },
127 { DRM_PLANE_TYPE_PRIMARY, "Primary" },
128 { DRM_PLANE_TYPE_CURSOR, "Cursor" },
132 * Optional properties
134 static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
136 { DRM_MODE_SCALE_NONE, "None" },
137 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
138 { DRM_MODE_SCALE_CENTER, "Center" },
139 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
143 * Non-global properties, but "required" for certain connectors.
145 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
147 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
148 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
149 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
152 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
154 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
156 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
157 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
158 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
161 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
162 drm_dvi_i_subconnector_enum_list)
164 static const struct drm_prop_enum_list drm_tv_select_enum_list[] =
166 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
167 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
168 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
169 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
170 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
173 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
175 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
177 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
178 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
179 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
180 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
181 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
184 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
185 drm_tv_subconnector_enum_list)
187 static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
188 { DRM_MODE_DIRTY_OFF, "Off" },
189 { DRM_MODE_DIRTY_ON, "On" },
190 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
193 struct drm_conn_prop_enum_list {
200 * Connector and encoder types.
202 static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
203 { { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
204 { DRM_MODE_CONNECTOR_VGA, "VGA" },
205 { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
206 { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
207 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
208 { DRM_MODE_CONNECTOR_Composite, "Composite" },
209 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
210 { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
211 { DRM_MODE_CONNECTOR_Component, "Component" },
212 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
213 { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
214 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
215 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
216 { DRM_MODE_CONNECTOR_TV, "TV" },
217 { DRM_MODE_CONNECTOR_eDP, "eDP" },
218 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
219 { DRM_MODE_CONNECTOR_DSI, "DSI" },
222 static const struct drm_prop_enum_list drm_encoder_enum_list[] =
223 { { DRM_MODE_ENCODER_NONE, "None" },
224 { DRM_MODE_ENCODER_DAC, "DAC" },
225 { DRM_MODE_ENCODER_TMDS, "TMDS" },
226 { DRM_MODE_ENCODER_LVDS, "LVDS" },
227 { DRM_MODE_ENCODER_TVDAC, "TV" },
228 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
229 { DRM_MODE_ENCODER_DSI, "DSI" },
232 static const struct drm_prop_enum_list drm_subpixel_enum_list[] =
234 { SubPixelUnknown, "Unknown" },
235 { SubPixelHorizontalRGB, "Horizontal RGB" },
236 { SubPixelHorizontalBGR, "Horizontal BGR" },
237 { SubPixelVerticalRGB, "Vertical RGB" },
238 { SubPixelVerticalBGR, "Vertical BGR" },
239 { SubPixelNone, "None" },
242 void drm_connector_ida_init(void)
246 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
247 ida_init(&drm_connector_enum_list[i].ida);
250 void drm_connector_ida_destroy(void)
254 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
255 ida_destroy(&drm_connector_enum_list[i].ida);
259 * drm_get_encoder_name - return a string for encoder
260 * @encoder: encoder to compute name of
262 * Note that the buffer used by this function is globally shared and owned by
263 * the function itself.
265 * FIXME: This isn't really multithreading safe.
267 const char *drm_get_encoder_name(const struct drm_encoder *encoder)
271 snprintf(buf, 32, "%s-%d",
272 drm_encoder_enum_list[encoder->encoder_type].name,
276 EXPORT_SYMBOL(drm_get_encoder_name);
279 * drm_get_connector_name - return a string for connector
280 * @connector: connector to compute name of
282 * Note that the buffer used by this function is globally shared and owned by
283 * the function itself.
285 * FIXME: This isn't really multithreading safe.
287 const char *drm_get_connector_name(const struct drm_connector *connector)
291 snprintf(buf, 32, "%s-%d",
292 drm_connector_enum_list[connector->connector_type].name,
293 connector->connector_type_id);
296 EXPORT_SYMBOL(drm_get_connector_name);
299 * drm_get_connector_status_name - return a string for connector status
300 * @status: connector status to compute name of
302 * In contrast to the other drm_get_*_name functions this one here returns a
303 * const pointer and hence is threadsafe.
305 const char *drm_get_connector_status_name(enum drm_connector_status status)
307 if (status == connector_status_connected)
309 else if (status == connector_status_disconnected)
310 return "disconnected";
314 EXPORT_SYMBOL(drm_get_connector_status_name);
317 * drm_get_subpixel_order_name - return a string for a given subpixel enum
318 * @order: enum of subpixel_order
320 * Note you could abuse this and return something out of bounds, but that
321 * would be a caller error. No unscrubbed user data should make it here.
323 const char *drm_get_subpixel_order_name(enum subpixel_order order)
325 return drm_subpixel_enum_list[order].name;
327 EXPORT_SYMBOL(drm_get_subpixel_order_name);
329 static char printable_char(int c)
331 return isascii(c) && isprint(c) ? c : '?';
335 * drm_get_format_name - return a string for drm fourcc format
336 * @format: format to compute name of
338 * Note that the buffer used by this function is globally shared and owned by
339 * the function itself.
341 * FIXME: This isn't really multithreading safe.
343 const char *drm_get_format_name(uint32_t format)
347 snprintf(buf, sizeof(buf),
348 "%c%c%c%c %s-endian (0x%08x)",
349 printable_char(format & 0xff),
350 printable_char((format >> 8) & 0xff),
351 printable_char((format >> 16) & 0xff),
352 printable_char((format >> 24) & 0x7f),
353 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
358 EXPORT_SYMBOL(drm_get_format_name);
361 * drm_mode_object_get - allocate a new modeset identifier
363 * @obj: object pointer, used to generate unique ID
364 * @obj_type: object type
366 * Create a unique identifier based on @ptr in @dev's identifier space. Used
367 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
368 * modeset identifiers are _not_ reference counted. Hence don't use this for
369 * reference counted modeset objects like framebuffers.
372 * New unique (relative to other objects in @dev) integer identifier for the
375 int drm_mode_object_get(struct drm_device *dev,
376 struct drm_mode_object *obj, uint32_t obj_type)
380 mutex_lock(&dev->mode_config.idr_mutex);
381 ret = idr_alloc(&dev->mode_config.crtc_idr, obj, 1, 0, GFP_KERNEL);
384 * Set up the object linking under the protection of the idr
385 * lock so that other users can't see inconsistent state.
388 obj->type = obj_type;
390 mutex_unlock(&dev->mode_config.idr_mutex);
392 return ret < 0 ? ret : 0;
396 * drm_mode_object_put - free a modeset identifer
398 * @object: object to free
400 * Free @id from @dev's unique identifier pool. Note that despite the _get
401 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
402 * for reference counted modeset objects like framebuffers.
404 void drm_mode_object_put(struct drm_device *dev,
405 struct drm_mode_object *object)
407 mutex_lock(&dev->mode_config.idr_mutex);
408 idr_remove(&dev->mode_config.crtc_idr, object->id);
409 mutex_unlock(&dev->mode_config.idr_mutex);
413 * drm_mode_object_find - look up a drm object with static lifetime
415 * @id: id of the mode object
416 * @type: type of the mode object
418 * Note that framebuffers cannot be looked up with this functions - since those
419 * are reference counted, they need special treatment.
421 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
422 uint32_t id, uint32_t type)
424 struct drm_mode_object *obj = NULL;
426 /* Framebuffers are reference counted and need their own lookup
428 WARN_ON(type == DRM_MODE_OBJECT_FB);
430 mutex_lock(&dev->mode_config.idr_mutex);
431 obj = idr_find(&dev->mode_config.crtc_idr, id);
432 if (!obj || (obj->type != type) || (obj->id != id))
434 mutex_unlock(&dev->mode_config.idr_mutex);
438 EXPORT_SYMBOL(drm_mode_object_find);
441 * drm_framebuffer_init - initialize a framebuffer
443 * @fb: framebuffer to be initialized
444 * @funcs: ... with these functions
446 * Allocates an ID for the framebuffer's parent mode object, sets its mode
447 * functions & device file and adds it to the master fd list.
450 * This functions publishes the fb and makes it available for concurrent access
451 * by other users. Which means by this point the fb _must_ be fully set up -
452 * since all the fb attributes are invariant over its lifetime, no further
453 * locking but only correct reference counting is required.
456 * Zero on success, error code on failure.
458 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
459 const struct drm_framebuffer_funcs *funcs)
463 mutex_lock(&dev->mode_config.fb_lock);
464 kref_init(&fb->refcount);
465 INIT_LIST_HEAD(&fb->filp_head);
469 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
473 /* Grab the idr reference. */
474 drm_framebuffer_reference(fb);
476 dev->mode_config.num_fb++;
477 list_add(&fb->head, &dev->mode_config.fb_list);
479 mutex_unlock(&dev->mode_config.fb_lock);
483 EXPORT_SYMBOL(drm_framebuffer_init);
485 static void drm_framebuffer_free(struct kref *kref)
487 struct drm_framebuffer *fb =
488 container_of(kref, struct drm_framebuffer, refcount);
489 fb->funcs->destroy(fb);
492 static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
495 struct drm_mode_object *obj = NULL;
496 struct drm_framebuffer *fb;
498 mutex_lock(&dev->mode_config.idr_mutex);
499 obj = idr_find(&dev->mode_config.crtc_idr, id);
500 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
504 mutex_unlock(&dev->mode_config.idr_mutex);
510 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
512 * @id: id of the fb object
514 * If successful, this grabs an additional reference to the framebuffer -
515 * callers need to make sure to eventually unreference the returned framebuffer
516 * again, using @drm_framebuffer_unreference.
518 struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
521 struct drm_framebuffer *fb;
523 mutex_lock(&dev->mode_config.fb_lock);
524 fb = __drm_framebuffer_lookup(dev, id);
526 drm_framebuffer_reference(fb);
527 mutex_unlock(&dev->mode_config.fb_lock);
531 EXPORT_SYMBOL(drm_framebuffer_lookup);
534 * drm_framebuffer_unreference - unref a framebuffer
535 * @fb: framebuffer to unref
537 * This functions decrements the fb's refcount and frees it if it drops to zero.
539 void drm_framebuffer_unreference(struct drm_framebuffer *fb)
541 DRM_DEBUG("FB ID: %d\n", fb->base.id);
542 kref_put(&fb->refcount, drm_framebuffer_free);
544 EXPORT_SYMBOL(drm_framebuffer_unreference);
547 * drm_framebuffer_reference - incr the fb refcnt
550 * This functions increments the fb's refcount.
552 void drm_framebuffer_reference(struct drm_framebuffer *fb)
554 DRM_DEBUG("FB ID: %d\n", fb->base.id);
555 kref_get(&fb->refcount);
557 EXPORT_SYMBOL(drm_framebuffer_reference);
559 static void drm_framebuffer_free_bug(struct kref *kref)
564 static void __drm_framebuffer_unreference(struct drm_framebuffer *fb)
566 DRM_DEBUG("FB ID: %d\n", fb->base.id);
567 kref_put(&fb->refcount, drm_framebuffer_free_bug);
570 /* dev->mode_config.fb_lock must be held! */
571 static void __drm_framebuffer_unregister(struct drm_device *dev,
572 struct drm_framebuffer *fb)
574 mutex_lock(&dev->mode_config.idr_mutex);
575 idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
576 mutex_unlock(&dev->mode_config.idr_mutex);
580 __drm_framebuffer_unreference(fb);
584 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
585 * @fb: fb to unregister
587 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
588 * those used for fbdev. Note that the caller must hold a reference of it's own,
589 * i.e. the object may not be destroyed through this call (since it'll lead to a
590 * locking inversion).
592 void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
594 struct drm_device *dev = fb->dev;
596 mutex_lock(&dev->mode_config.fb_lock);
597 /* Mark fb as reaped and drop idr ref. */
598 __drm_framebuffer_unregister(dev, fb);
599 mutex_unlock(&dev->mode_config.fb_lock);
601 EXPORT_SYMBOL(drm_framebuffer_unregister_private);
604 * drm_framebuffer_cleanup - remove a framebuffer object
605 * @fb: framebuffer to remove
607 * Cleanup framebuffer. This function is intended to be used from the drivers
608 * ->destroy callback. It can also be used to clean up driver private
609 * framebuffers embedded into a larger structure.
611 * Note that this function does not remove the fb from active usuage - if it is
612 * still used anywhere, hilarity can ensue since userspace could call getfb on
613 * the id and get back -EINVAL. Obviously no concern at driver unload time.
615 * Also, the framebuffer will not be removed from the lookup idr - for
616 * user-created framebuffers this will happen in in the rmfb ioctl. For
617 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
618 * drm_framebuffer_unregister_private.
620 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
622 struct drm_device *dev = fb->dev;
624 mutex_lock(&dev->mode_config.fb_lock);
626 dev->mode_config.num_fb--;
627 mutex_unlock(&dev->mode_config.fb_lock);
629 EXPORT_SYMBOL(drm_framebuffer_cleanup);
632 * drm_framebuffer_remove - remove and unreference a framebuffer object
633 * @fb: framebuffer to remove
635 * Scans all the CRTCs and planes in @dev's mode_config. If they're
636 * using @fb, removes it, setting it to NULL. Then drops the reference to the
637 * passed-in framebuffer. Might take the modeset locks.
639 * Note that this function optimizes the cleanup away if the caller holds the
640 * last reference to the framebuffer. It is also guaranteed to not take the
641 * modeset locks in this case.
643 void drm_framebuffer_remove(struct drm_framebuffer *fb)
645 struct drm_device *dev = fb->dev;
646 struct drm_crtc *crtc;
647 struct drm_plane *plane;
648 struct drm_mode_set set;
651 WARN_ON(!list_empty(&fb->filp_head));
654 * drm ABI mandates that we remove any deleted framebuffers from active
655 * useage. But since most sane clients only remove framebuffers they no
656 * longer need, try to optimize this away.
658 * Since we're holding a reference ourselves, observing a refcount of 1
659 * means that we're the last holder and can skip it. Also, the refcount
660 * can never increase from 1 again, so we don't need any barriers or
663 * Note that userspace could try to race with use and instate a new
664 * usage _after_ we've cleared all current ones. End result will be an
665 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
668 if (atomic_read(&fb->refcount.refcount) > 1) {
669 drm_modeset_lock_all(dev);
670 /* remove from any CRTC */
671 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
672 if (crtc->primary->fb == fb) {
673 /* should turn off the crtc */
674 memset(&set, 0, sizeof(struct drm_mode_set));
677 ret = drm_mode_set_config_internal(&set);
679 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
683 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
685 drm_plane_force_disable(plane);
687 drm_modeset_unlock_all(dev);
690 drm_framebuffer_unreference(fb);
692 EXPORT_SYMBOL(drm_framebuffer_remove);
695 * drm_crtc_init_with_planes - Initialise a new CRTC object with
696 * specified primary and cursor planes.
698 * @crtc: CRTC object to init
699 * @primary: Primary plane for CRTC
700 * @cursor: Cursor plane for CRTC
701 * @funcs: callbacks for the new CRTC
703 * Inits a new object created as base part of a driver crtc object.
706 * Zero on success, error code on failure.
708 int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
709 struct drm_plane *primary,
711 const struct drm_crtc_funcs *funcs)
717 crtc->invert_dimensions = false;
719 drm_modeset_lock_all(dev);
720 mutex_init(&crtc->mutex);
721 mutex_lock_nest_lock(&crtc->mutex, &dev->mode_config.mutex);
723 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
727 crtc->base.properties = &crtc->properties;
729 list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
730 dev->mode_config.num_crtc++;
732 crtc->primary = primary;
734 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
737 drm_modeset_unlock_all(dev);
741 EXPORT_SYMBOL(drm_crtc_init_with_planes);
744 * drm_crtc_cleanup - Clean up the core crtc usage
745 * @crtc: CRTC to cleanup
747 * This function cleans up @crtc and removes it from the DRM mode setting
748 * core. Note that the function does *not* free the crtc structure itself,
749 * this is the responsibility of the caller.
751 void drm_crtc_cleanup(struct drm_crtc *crtc)
753 struct drm_device *dev = crtc->dev;
755 kfree(crtc->gamma_store);
756 crtc->gamma_store = NULL;
758 drm_mode_object_put(dev, &crtc->base);
759 list_del(&crtc->head);
760 dev->mode_config.num_crtc--;
762 EXPORT_SYMBOL(drm_crtc_cleanup);
765 * drm_crtc_index - find the index of a registered CRTC
766 * @crtc: CRTC to find index for
768 * Given a registered CRTC, return the index of that CRTC within a DRM
769 * device's list of CRTCs.
771 unsigned int drm_crtc_index(struct drm_crtc *crtc)
773 unsigned int index = 0;
774 struct drm_crtc *tmp;
776 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
785 EXPORT_SYMBOL(drm_crtc_index);
788 * drm_mode_remove - remove and free a mode
789 * @connector: connector list to modify
790 * @mode: mode to remove
792 * Remove @mode from @connector's mode list, then free it.
794 static void drm_mode_remove(struct drm_connector *connector,
795 struct drm_display_mode *mode)
797 list_del(&mode->head);
798 drm_mode_destroy(connector->dev, mode);
802 * drm_connector_init - Init a preallocated connector
804 * @connector: the connector to init
805 * @funcs: callbacks for this connector
806 * @connector_type: user visible type of the connector
808 * Initialises a preallocated connector. Connectors should be
809 * subclassed as part of driver connector objects.
812 * Zero on success, error code on failure.
814 int drm_connector_init(struct drm_device *dev,
815 struct drm_connector *connector,
816 const struct drm_connector_funcs *funcs,
820 struct ida *connector_ida =
821 &drm_connector_enum_list[connector_type].ida;
823 drm_modeset_lock_all(dev);
825 ret = drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
829 connector->base.properties = &connector->properties;
830 connector->dev = dev;
831 connector->funcs = funcs;
832 connector->connector_type = connector_type;
833 connector->connector_type_id =
834 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
835 if (connector->connector_type_id < 0) {
836 ret = connector->connector_type_id;
837 drm_mode_object_put(dev, &connector->base);
840 INIT_LIST_HEAD(&connector->probed_modes);
841 INIT_LIST_HEAD(&connector->modes);
842 connector->edid_blob_ptr = NULL;
843 connector->status = connector_status_unknown;
845 list_add_tail(&connector->head, &dev->mode_config.connector_list);
846 dev->mode_config.num_connector++;
848 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
849 drm_object_attach_property(&connector->base,
850 dev->mode_config.edid_property,
853 drm_object_attach_property(&connector->base,
854 dev->mode_config.dpms_property, 0);
857 drm_modeset_unlock_all(dev);
861 EXPORT_SYMBOL(drm_connector_init);
864 * drm_connector_cleanup - cleans up an initialised connector
865 * @connector: connector to cleanup
867 * Cleans up the connector but doesn't free the object.
869 void drm_connector_cleanup(struct drm_connector *connector)
871 struct drm_device *dev = connector->dev;
872 struct drm_display_mode *mode, *t;
874 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
875 drm_mode_remove(connector, mode);
877 list_for_each_entry_safe(mode, t, &connector->modes, head)
878 drm_mode_remove(connector, mode);
880 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
881 connector->connector_type_id);
883 drm_mode_object_put(dev, &connector->base);
884 list_del(&connector->head);
885 dev->mode_config.num_connector--;
887 EXPORT_SYMBOL(drm_connector_cleanup);
890 * drm_connector_unplug_all - unregister connector userspace interfaces
893 * This function unregisters all connector userspace interfaces in sysfs. Should
894 * be call when the device is disconnected, e.g. from an usb driver's
895 * ->disconnect callback.
897 void drm_connector_unplug_all(struct drm_device *dev)
899 struct drm_connector *connector;
901 /* taking the mode config mutex ends up in a clash with sysfs */
902 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
903 drm_sysfs_connector_remove(connector);
906 EXPORT_SYMBOL(drm_connector_unplug_all);
909 * drm_bridge_init - initialize a drm transcoder/bridge
911 * @bridge: transcoder/bridge to set up
912 * @funcs: bridge function table
914 * Initialises a preallocated bridge. Bridges should be
915 * subclassed as part of driver connector objects.
918 * Zero on success, error code on failure.
920 int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
921 const struct drm_bridge_funcs *funcs)
925 drm_modeset_lock_all(dev);
927 ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
932 bridge->funcs = funcs;
934 list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
935 dev->mode_config.num_bridge++;
938 drm_modeset_unlock_all(dev);
941 EXPORT_SYMBOL(drm_bridge_init);
944 * drm_bridge_cleanup - cleans up an initialised bridge
945 * @bridge: bridge to cleanup
947 * Cleans up the bridge but doesn't free the object.
949 void drm_bridge_cleanup(struct drm_bridge *bridge)
951 struct drm_device *dev = bridge->dev;
953 drm_modeset_lock_all(dev);
954 drm_mode_object_put(dev, &bridge->base);
955 list_del(&bridge->head);
956 dev->mode_config.num_bridge--;
957 drm_modeset_unlock_all(dev);
959 EXPORT_SYMBOL(drm_bridge_cleanup);
962 * drm_encoder_init - Init a preallocated encoder
964 * @encoder: the encoder to init
965 * @funcs: callbacks for this encoder
966 * @encoder_type: user visible type of the encoder
968 * Initialises a preallocated encoder. Encoder should be
969 * subclassed as part of driver encoder objects.
972 * Zero on success, error code on failure.
974 int drm_encoder_init(struct drm_device *dev,
975 struct drm_encoder *encoder,
976 const struct drm_encoder_funcs *funcs,
981 drm_modeset_lock_all(dev);
983 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
988 encoder->encoder_type = encoder_type;
989 encoder->funcs = funcs;
991 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
992 dev->mode_config.num_encoder++;
995 drm_modeset_unlock_all(dev);
999 EXPORT_SYMBOL(drm_encoder_init);
1002 * drm_encoder_cleanup - cleans up an initialised encoder
1003 * @encoder: encoder to cleanup
1005 * Cleans up the encoder but doesn't free the object.
1007 void drm_encoder_cleanup(struct drm_encoder *encoder)
1009 struct drm_device *dev = encoder->dev;
1010 drm_modeset_lock_all(dev);
1011 drm_mode_object_put(dev, &encoder->base);
1012 list_del(&encoder->head);
1013 dev->mode_config.num_encoder--;
1014 drm_modeset_unlock_all(dev);
1016 EXPORT_SYMBOL(drm_encoder_cleanup);
1019 * drm_universal_plane_init - Initialize a new universal plane object
1021 * @plane: plane object to init
1022 * @possible_crtcs: bitmask of possible CRTCs
1023 * @funcs: callbacks for the new plane
1024 * @formats: array of supported formats (%DRM_FORMAT_*)
1025 * @format_count: number of elements in @formats
1026 * @type: type of plane (overlay, primary, cursor)
1028 * Initializes a plane object of type @type.
1031 * Zero on success, error code on failure.
1033 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1034 unsigned long possible_crtcs,
1035 const struct drm_plane_funcs *funcs,
1036 const uint32_t *formats, uint32_t format_count,
1037 enum drm_plane_type type)
1041 drm_modeset_lock_all(dev);
1043 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1047 plane->base.properties = &plane->properties;
1049 plane->funcs = funcs;
1050 plane->format_types = kmalloc(sizeof(uint32_t) * format_count,
1052 if (!plane->format_types) {
1053 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1054 drm_mode_object_put(dev, &plane->base);
1059 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1060 plane->format_count = format_count;
1061 plane->possible_crtcs = possible_crtcs;
1064 list_add_tail(&plane->head, &dev->mode_config.plane_list);
1065 dev->mode_config.num_total_plane++;
1066 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1067 dev->mode_config.num_overlay_plane++;
1069 drm_object_attach_property(&plane->base,
1070 dev->mode_config.plane_type_property,
1074 drm_modeset_unlock_all(dev);
1078 EXPORT_SYMBOL(drm_universal_plane_init);
1081 * drm_plane_init - Initialize a legacy plane
1083 * @plane: plane object to init
1084 * @possible_crtcs: bitmask of possible CRTCs
1085 * @funcs: callbacks for the new plane
1086 * @formats: array of supported formats (%DRM_FORMAT_*)
1087 * @format_count: number of elements in @formats
1088 * @is_primary: plane type (primary vs overlay)
1090 * Legacy API to initialize a DRM plane.
1092 * New drivers should call drm_universal_plane_init() instead.
1095 * Zero on success, error code on failure.
1097 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1098 unsigned long possible_crtcs,
1099 const struct drm_plane_funcs *funcs,
1100 const uint32_t *formats, uint32_t format_count,
1103 enum drm_plane_type type;
1105 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1106 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1107 formats, format_count, type);
1109 EXPORT_SYMBOL(drm_plane_init);
1112 * drm_plane_cleanup - Clean up the core plane usage
1113 * @plane: plane to cleanup
1115 * This function cleans up @plane and removes it from the DRM mode setting
1116 * core. Note that the function does *not* free the plane structure itself,
1117 * this is the responsibility of the caller.
1119 void drm_plane_cleanup(struct drm_plane *plane)
1121 struct drm_device *dev = plane->dev;
1123 drm_modeset_lock_all(dev);
1124 kfree(plane->format_types);
1125 drm_mode_object_put(dev, &plane->base);
1127 BUG_ON(list_empty(&plane->head));
1129 list_del(&plane->head);
1130 dev->mode_config.num_total_plane--;
1131 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1132 dev->mode_config.num_overlay_plane--;
1133 drm_modeset_unlock_all(dev);
1135 EXPORT_SYMBOL(drm_plane_cleanup);
1138 * drm_plane_force_disable - Forcibly disable a plane
1139 * @plane: plane to disable
1141 * Forces the plane to be disabled.
1143 * Used when the plane's current framebuffer is destroyed,
1144 * and when restoring fbdev mode.
1146 void drm_plane_force_disable(struct drm_plane *plane)
1153 ret = plane->funcs->disable_plane(plane);
1155 DRM_ERROR("failed to disable plane with busy fb\n");
1156 /* disconnect the plane from the fb and crtc: */
1157 __drm_framebuffer_unreference(plane->fb);
1161 EXPORT_SYMBOL(drm_plane_force_disable);
1163 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
1165 struct drm_property *edid;
1166 struct drm_property *dpms;
1169 * Standard properties (apply to all connectors)
1171 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1172 DRM_MODE_PROP_IMMUTABLE,
1174 dev->mode_config.edid_property = edid;
1176 dpms = drm_property_create_enum(dev, 0,
1177 "DPMS", drm_dpms_enum_list,
1178 ARRAY_SIZE(drm_dpms_enum_list));
1179 dev->mode_config.dpms_property = dpms;
1184 static int drm_mode_create_standard_plane_properties(struct drm_device *dev)
1186 struct drm_property *type;
1189 * Standard properties (apply to all planes)
1191 type = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1192 "type", drm_plane_type_enum_list,
1193 ARRAY_SIZE(drm_plane_type_enum_list));
1194 dev->mode_config.plane_type_property = type;
1200 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1203 * Called by a driver the first time a DVI-I connector is made.
1205 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1207 struct drm_property *dvi_i_selector;
1208 struct drm_property *dvi_i_subconnector;
1210 if (dev->mode_config.dvi_i_select_subconnector_property)
1214 drm_property_create_enum(dev, 0,
1215 "select subconnector",
1216 drm_dvi_i_select_enum_list,
1217 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1218 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1220 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1222 drm_dvi_i_subconnector_enum_list,
1223 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1224 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1228 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1231 * drm_create_tv_properties - create TV specific connector properties
1233 * @num_modes: number of different TV formats (modes) supported
1234 * @modes: array of pointers to strings containing name of each format
1236 * Called by a driver's TV initialization routine, this function creates
1237 * the TV specific connector properties for a given device. Caller is
1238 * responsible for allocating a list of format names and passing them to
1241 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
1244 struct drm_property *tv_selector;
1245 struct drm_property *tv_subconnector;
1248 if (dev->mode_config.tv_select_subconnector_property)
1252 * Basic connector properties
1254 tv_selector = drm_property_create_enum(dev, 0,
1255 "select subconnector",
1256 drm_tv_select_enum_list,
1257 ARRAY_SIZE(drm_tv_select_enum_list));
1258 dev->mode_config.tv_select_subconnector_property = tv_selector;
1261 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1263 drm_tv_subconnector_enum_list,
1264 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1265 dev->mode_config.tv_subconnector_property = tv_subconnector;
1268 * Other, TV specific properties: margins & TV modes.
1270 dev->mode_config.tv_left_margin_property =
1271 drm_property_create_range(dev, 0, "left margin", 0, 100);
1273 dev->mode_config.tv_right_margin_property =
1274 drm_property_create_range(dev, 0, "right margin", 0, 100);
1276 dev->mode_config.tv_top_margin_property =
1277 drm_property_create_range(dev, 0, "top margin", 0, 100);
1279 dev->mode_config.tv_bottom_margin_property =
1280 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1282 dev->mode_config.tv_mode_property =
1283 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1285 for (i = 0; i < num_modes; i++)
1286 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1289 dev->mode_config.tv_brightness_property =
1290 drm_property_create_range(dev, 0, "brightness", 0, 100);
1292 dev->mode_config.tv_contrast_property =
1293 drm_property_create_range(dev, 0, "contrast", 0, 100);
1295 dev->mode_config.tv_flicker_reduction_property =
1296 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1298 dev->mode_config.tv_overscan_property =
1299 drm_property_create_range(dev, 0, "overscan", 0, 100);
1301 dev->mode_config.tv_saturation_property =
1302 drm_property_create_range(dev, 0, "saturation", 0, 100);
1304 dev->mode_config.tv_hue_property =
1305 drm_property_create_range(dev, 0, "hue", 0, 100);
1309 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1312 * drm_mode_create_scaling_mode_property - create scaling mode property
1315 * Called by a driver the first time it's needed, must be attached to desired
1318 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1320 struct drm_property *scaling_mode;
1322 if (dev->mode_config.scaling_mode_property)
1326 drm_property_create_enum(dev, 0, "scaling mode",
1327 drm_scaling_mode_enum_list,
1328 ARRAY_SIZE(drm_scaling_mode_enum_list));
1330 dev->mode_config.scaling_mode_property = scaling_mode;
1334 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1337 * drm_mode_create_dirty_property - create dirty property
1340 * Called by a driver the first time it's needed, must be attached to desired
1343 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1345 struct drm_property *dirty_info;
1347 if (dev->mode_config.dirty_info_property)
1351 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1353 drm_dirty_info_enum_list,
1354 ARRAY_SIZE(drm_dirty_info_enum_list));
1355 dev->mode_config.dirty_info_property = dirty_info;
1359 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1361 static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
1363 uint32_t total_objects = 0;
1365 total_objects += dev->mode_config.num_crtc;
1366 total_objects += dev->mode_config.num_connector;
1367 total_objects += dev->mode_config.num_encoder;
1368 total_objects += dev->mode_config.num_bridge;
1370 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
1371 if (!group->id_list)
1374 group->num_crtcs = 0;
1375 group->num_connectors = 0;
1376 group->num_encoders = 0;
1377 group->num_bridges = 0;
1382 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1383 * the drm core's responsibility to set up mode control groups.
1385 int drm_mode_group_init_legacy_group(struct drm_device *dev,
1386 struct drm_mode_group *group)
1388 struct drm_crtc *crtc;
1389 struct drm_encoder *encoder;
1390 struct drm_connector *connector;
1391 struct drm_bridge *bridge;
1394 if ((ret = drm_mode_group_init(dev, group)))
1397 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1398 group->id_list[group->num_crtcs++] = crtc->base.id;
1400 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1401 group->id_list[group->num_crtcs + group->num_encoders++] =
1404 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1405 group->id_list[group->num_crtcs + group->num_encoders +
1406 group->num_connectors++] = connector->base.id;
1408 list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
1409 group->id_list[group->num_crtcs + group->num_encoders +
1410 group->num_connectors + group->num_bridges++] =
1415 EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
1418 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1419 * @out: drm_mode_modeinfo struct to return to the user
1420 * @in: drm_display_mode to use
1422 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1425 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1426 const struct drm_display_mode *in)
1428 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1429 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1430 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1431 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1432 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1433 "timing values too large for mode info\n");
1435 out->clock = in->clock;
1436 out->hdisplay = in->hdisplay;
1437 out->hsync_start = in->hsync_start;
1438 out->hsync_end = in->hsync_end;
1439 out->htotal = in->htotal;
1440 out->hskew = in->hskew;
1441 out->vdisplay = in->vdisplay;
1442 out->vsync_start = in->vsync_start;
1443 out->vsync_end = in->vsync_end;
1444 out->vtotal = in->vtotal;
1445 out->vscan = in->vscan;
1446 out->vrefresh = in->vrefresh;
1447 out->flags = in->flags;
1448 out->type = in->type;
1449 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1450 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1454 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1455 * @out: drm_display_mode to return to the user
1456 * @in: drm_mode_modeinfo to use
1458 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1462 * Zero on success, errno on failure.
1464 static int drm_crtc_convert_umode(struct drm_display_mode *out,
1465 const struct drm_mode_modeinfo *in)
1467 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1470 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1473 out->clock = in->clock;
1474 out->hdisplay = in->hdisplay;
1475 out->hsync_start = in->hsync_start;
1476 out->hsync_end = in->hsync_end;
1477 out->htotal = in->htotal;
1478 out->hskew = in->hskew;
1479 out->vdisplay = in->vdisplay;
1480 out->vsync_start = in->vsync_start;
1481 out->vsync_end = in->vsync_end;
1482 out->vtotal = in->vtotal;
1483 out->vscan = in->vscan;
1484 out->vrefresh = in->vrefresh;
1485 out->flags = in->flags;
1486 out->type = in->type;
1487 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1488 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1494 * drm_mode_getresources - get graphics configuration
1495 * @dev: drm device for the ioctl
1496 * @data: data pointer for the ioctl
1497 * @file_priv: drm file for the ioctl call
1499 * Construct a set of configuration description structures and return
1500 * them to the user, including CRTC, connector and framebuffer configuration.
1502 * Called by the user via ioctl.
1505 * Zero on success, errno on failure.
1507 int drm_mode_getresources(struct drm_device *dev, void *data,
1508 struct drm_file *file_priv)
1510 struct drm_mode_card_res *card_res = data;
1511 struct list_head *lh;
1512 struct drm_framebuffer *fb;
1513 struct drm_connector *connector;
1514 struct drm_crtc *crtc;
1515 struct drm_encoder *encoder;
1517 int connector_count = 0;
1520 int encoder_count = 0;
1522 uint32_t __user *fb_id;
1523 uint32_t __user *crtc_id;
1524 uint32_t __user *connector_id;
1525 uint32_t __user *encoder_id;
1526 struct drm_mode_group *mode_group;
1528 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1532 mutex_lock(&file_priv->fbs_lock);
1534 * For the non-control nodes we need to limit the list of resources
1535 * by IDs in the group list for this node
1537 list_for_each(lh, &file_priv->fbs)
1540 /* handle this in 4 parts */
1542 if (card_res->count_fbs >= fb_count) {
1544 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1545 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1546 if (put_user(fb->base.id, fb_id + copied)) {
1547 mutex_unlock(&file_priv->fbs_lock);
1553 card_res->count_fbs = fb_count;
1554 mutex_unlock(&file_priv->fbs_lock);
1556 drm_modeset_lock_all(dev);
1557 if (!drm_is_primary_client(file_priv)) {
1560 list_for_each(lh, &dev->mode_config.crtc_list)
1563 list_for_each(lh, &dev->mode_config.connector_list)
1566 list_for_each(lh, &dev->mode_config.encoder_list)
1570 mode_group = &file_priv->master->minor->mode_group;
1571 crtc_count = mode_group->num_crtcs;
1572 connector_count = mode_group->num_connectors;
1573 encoder_count = mode_group->num_encoders;
1576 card_res->max_height = dev->mode_config.max_height;
1577 card_res->min_height = dev->mode_config.min_height;
1578 card_res->max_width = dev->mode_config.max_width;
1579 card_res->min_width = dev->mode_config.min_width;
1582 if (card_res->count_crtcs >= crtc_count) {
1584 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1586 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1588 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1589 if (put_user(crtc->base.id, crtc_id + copied)) {
1596 for (i = 0; i < mode_group->num_crtcs; i++) {
1597 if (put_user(mode_group->id_list[i],
1598 crtc_id + copied)) {
1606 card_res->count_crtcs = crtc_count;
1609 if (card_res->count_encoders >= encoder_count) {
1611 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1613 list_for_each_entry(encoder,
1614 &dev->mode_config.encoder_list,
1616 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1617 drm_get_encoder_name(encoder));
1618 if (put_user(encoder->base.id, encoder_id +
1626 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1627 if (put_user(mode_group->id_list[i],
1628 encoder_id + copied)) {
1637 card_res->count_encoders = encoder_count;
1640 if (card_res->count_connectors >= connector_count) {
1642 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1644 list_for_each_entry(connector,
1645 &dev->mode_config.connector_list,
1647 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1649 drm_get_connector_name(connector));
1650 if (put_user(connector->base.id,
1651 connector_id + copied)) {
1658 int start = mode_group->num_crtcs +
1659 mode_group->num_encoders;
1660 for (i = start; i < start + mode_group->num_connectors; i++) {
1661 if (put_user(mode_group->id_list[i],
1662 connector_id + copied)) {
1670 card_res->count_connectors = connector_count;
1672 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1673 card_res->count_connectors, card_res->count_encoders);
1676 drm_modeset_unlock_all(dev);
1681 * drm_mode_getcrtc - get CRTC configuration
1682 * @dev: drm device for the ioctl
1683 * @data: data pointer for the ioctl
1684 * @file_priv: drm file for the ioctl call
1686 * Construct a CRTC configuration structure to return to the user.
1688 * Called by the user via ioctl.
1691 * Zero on success, errno on failure.
1693 int drm_mode_getcrtc(struct drm_device *dev,
1694 void *data, struct drm_file *file_priv)
1696 struct drm_mode_crtc *crtc_resp = data;
1697 struct drm_crtc *crtc;
1698 struct drm_mode_object *obj;
1701 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1704 drm_modeset_lock_all(dev);
1706 obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1707 DRM_MODE_OBJECT_CRTC);
1712 crtc = obj_to_crtc(obj);
1714 crtc_resp->x = crtc->x;
1715 crtc_resp->y = crtc->y;
1716 crtc_resp->gamma_size = crtc->gamma_size;
1717 if (crtc->primary->fb)
1718 crtc_resp->fb_id = crtc->primary->fb->base.id;
1720 crtc_resp->fb_id = 0;
1722 if (crtc->enabled) {
1724 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1725 crtc_resp->mode_valid = 1;
1728 crtc_resp->mode_valid = 0;
1732 drm_modeset_unlock_all(dev);
1736 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1737 const struct drm_file *file_priv)
1740 * If user-space hasn't configured the driver to expose the stereo 3D
1741 * modes, don't expose them.
1743 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1750 * drm_mode_getconnector - get connector configuration
1751 * @dev: drm device for the ioctl
1752 * @data: data pointer for the ioctl
1753 * @file_priv: drm file for the ioctl call
1755 * Construct a connector configuration structure to return to the user.
1757 * Called by the user via ioctl.
1760 * Zero on success, errno on failure.
1762 int drm_mode_getconnector(struct drm_device *dev, void *data,
1763 struct drm_file *file_priv)
1765 struct drm_mode_get_connector *out_resp = data;
1766 struct drm_mode_object *obj;
1767 struct drm_connector *connector;
1768 struct drm_display_mode *mode;
1770 int props_count = 0;
1771 int encoders_count = 0;
1775 struct drm_mode_modeinfo u_mode;
1776 struct drm_mode_modeinfo __user *mode_ptr;
1777 uint32_t __user *prop_ptr;
1778 uint64_t __user *prop_values;
1779 uint32_t __user *encoder_ptr;
1781 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1784 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1786 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1788 mutex_lock(&dev->mode_config.mutex);
1790 obj = drm_mode_object_find(dev, out_resp->connector_id,
1791 DRM_MODE_OBJECT_CONNECTOR);
1796 connector = obj_to_connector(obj);
1798 props_count = connector->properties.count;
1800 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1801 if (connector->encoder_ids[i] != 0) {
1806 if (out_resp->count_modes == 0) {
1807 connector->funcs->fill_modes(connector,
1808 dev->mode_config.max_width,
1809 dev->mode_config.max_height);
1812 /* delayed so we get modes regardless of pre-fill_modes state */
1813 list_for_each_entry(mode, &connector->modes, head)
1814 if (drm_mode_expose_to_userspace(mode, file_priv))
1817 out_resp->connector_id = connector->base.id;
1818 out_resp->connector_type = connector->connector_type;
1819 out_resp->connector_type_id = connector->connector_type_id;
1820 out_resp->mm_width = connector->display_info.width_mm;
1821 out_resp->mm_height = connector->display_info.height_mm;
1822 out_resp->subpixel = connector->display_info.subpixel_order;
1823 out_resp->connection = connector->status;
1824 if (connector->encoder)
1825 out_resp->encoder_id = connector->encoder->base.id;
1827 out_resp->encoder_id = 0;
1830 * This ioctl is called twice, once to determine how much space is
1831 * needed, and the 2nd time to fill it.
1833 if ((out_resp->count_modes >= mode_count) && mode_count) {
1835 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
1836 list_for_each_entry(mode, &connector->modes, head) {
1837 if (!drm_mode_expose_to_userspace(mode, file_priv))
1840 drm_crtc_convert_to_umode(&u_mode, mode);
1841 if (copy_to_user(mode_ptr + copied,
1842 &u_mode, sizeof(u_mode))) {
1849 out_resp->count_modes = mode_count;
1851 if ((out_resp->count_props >= props_count) && props_count) {
1853 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
1854 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
1855 for (i = 0; i < connector->properties.count; i++) {
1856 if (put_user(connector->properties.ids[i],
1857 prop_ptr + copied)) {
1862 if (put_user(connector->properties.values[i],
1863 prop_values + copied)) {
1870 out_resp->count_props = props_count;
1872 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1874 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
1875 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1876 if (connector->encoder_ids[i] != 0) {
1877 if (put_user(connector->encoder_ids[i],
1878 encoder_ptr + copied)) {
1886 out_resp->count_encoders = encoders_count;
1889 mutex_unlock(&dev->mode_config.mutex);
1895 * drm_mode_getencoder - get encoder configuration
1896 * @dev: drm device for the ioctl
1897 * @data: data pointer for the ioctl
1898 * @file_priv: drm file for the ioctl call
1900 * Construct a encoder configuration structure to return to the user.
1902 * Called by the user via ioctl.
1905 * Zero on success, errno on failure.
1907 int drm_mode_getencoder(struct drm_device *dev, void *data,
1908 struct drm_file *file_priv)
1910 struct drm_mode_get_encoder *enc_resp = data;
1911 struct drm_mode_object *obj;
1912 struct drm_encoder *encoder;
1915 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1918 drm_modeset_lock_all(dev);
1919 obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1920 DRM_MODE_OBJECT_ENCODER);
1925 encoder = obj_to_encoder(obj);
1928 enc_resp->crtc_id = encoder->crtc->base.id;
1930 enc_resp->crtc_id = 0;
1931 enc_resp->encoder_type = encoder->encoder_type;
1932 enc_resp->encoder_id = encoder->base.id;
1933 enc_resp->possible_crtcs = encoder->possible_crtcs;
1934 enc_resp->possible_clones = encoder->possible_clones;
1937 drm_modeset_unlock_all(dev);
1942 * drm_mode_getplane_res - enumerate all plane resources
1945 * @file_priv: DRM file info
1947 * Construct a list of plane ids to return to the user.
1949 * Called by the user via ioctl.
1952 * Zero on success, errno on failure.
1954 int drm_mode_getplane_res(struct drm_device *dev, void *data,
1955 struct drm_file *file_priv)
1957 struct drm_mode_get_plane_res *plane_resp = data;
1958 struct drm_mode_config *config;
1959 struct drm_plane *plane;
1960 uint32_t __user *plane_ptr;
1961 int copied = 0, ret = 0;
1963 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1966 drm_modeset_lock_all(dev);
1967 config = &dev->mode_config;
1970 * This ioctl is called twice, once to determine how much space is
1971 * needed, and the 2nd time to fill it.
1973 if (config->num_overlay_plane &&
1974 (plane_resp->count_planes >= config->num_overlay_plane)) {
1975 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
1977 list_for_each_entry(plane, &config->plane_list, head) {
1978 /* Only advertise overlays to userspace for now. */
1979 if (plane->type != DRM_PLANE_TYPE_OVERLAY)
1982 if (put_user(plane->base.id, plane_ptr + copied)) {
1989 plane_resp->count_planes = config->num_overlay_plane;
1992 drm_modeset_unlock_all(dev);
1997 * drm_mode_getplane - get plane configuration
2000 * @file_priv: DRM file info
2002 * Construct a plane configuration structure to return to the user.
2004 * Called by the user via ioctl.
2007 * Zero on success, errno on failure.
2009 int drm_mode_getplane(struct drm_device *dev, void *data,
2010 struct drm_file *file_priv)
2012 struct drm_mode_get_plane *plane_resp = data;
2013 struct drm_mode_object *obj;
2014 struct drm_plane *plane;
2015 uint32_t __user *format_ptr;
2018 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2021 drm_modeset_lock_all(dev);
2022 obj = drm_mode_object_find(dev, plane_resp->plane_id,
2023 DRM_MODE_OBJECT_PLANE);
2028 plane = obj_to_plane(obj);
2031 plane_resp->crtc_id = plane->crtc->base.id;
2033 plane_resp->crtc_id = 0;
2036 plane_resp->fb_id = plane->fb->base.id;
2038 plane_resp->fb_id = 0;
2040 plane_resp->plane_id = plane->base.id;
2041 plane_resp->possible_crtcs = plane->possible_crtcs;
2042 plane_resp->gamma_size = 0;
2045 * This ioctl is called twice, once to determine how much space is
2046 * needed, and the 2nd time to fill it.
2048 if (plane->format_count &&
2049 (plane_resp->count_format_types >= plane->format_count)) {
2050 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2051 if (copy_to_user(format_ptr,
2052 plane->format_types,
2053 sizeof(uint32_t) * plane->format_count)) {
2058 plane_resp->count_format_types = plane->format_count;
2061 drm_modeset_unlock_all(dev);
2066 * drm_mode_setplane - configure a plane's configuration
2068 * @data: ioctl data*
2069 * @file_priv: DRM file info
2071 * Set plane configuration, including placement, fb, scaling, and other factors.
2072 * Or pass a NULL fb to disable.
2075 * Zero on success, errno on failure.
2077 int drm_mode_setplane(struct drm_device *dev, void *data,
2078 struct drm_file *file_priv)
2080 struct drm_mode_set_plane *plane_req = data;
2081 struct drm_mode_object *obj;
2082 struct drm_plane *plane;
2083 struct drm_crtc *crtc;
2084 struct drm_framebuffer *fb = NULL, *old_fb = NULL;
2086 unsigned int fb_width, fb_height;
2089 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2093 * First, find the plane, crtc, and fb objects. If not available,
2094 * we don't bother to call the driver.
2096 obj = drm_mode_object_find(dev, plane_req->plane_id,
2097 DRM_MODE_OBJECT_PLANE);
2099 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2100 plane_req->plane_id);
2103 plane = obj_to_plane(obj);
2105 /* No fb means shut it down */
2106 if (!plane_req->fb_id) {
2107 drm_modeset_lock_all(dev);
2109 plane->funcs->disable_plane(plane);
2112 drm_modeset_unlock_all(dev);
2116 obj = drm_mode_object_find(dev, plane_req->crtc_id,
2117 DRM_MODE_OBJECT_CRTC);
2119 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2120 plane_req->crtc_id);
2124 crtc = obj_to_crtc(obj);
2126 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2128 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2134 /* Check whether this plane supports the fb pixel format. */
2135 for (i = 0; i < plane->format_count; i++)
2136 if (fb->pixel_format == plane->format_types[i])
2138 if (i == plane->format_count) {
2139 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2140 drm_get_format_name(fb->pixel_format));
2145 fb_width = fb->width << 16;
2146 fb_height = fb->height << 16;
2148 /* Make sure source coordinates are inside the fb. */
2149 if (plane_req->src_w > fb_width ||
2150 plane_req->src_x > fb_width - plane_req->src_w ||
2151 plane_req->src_h > fb_height ||
2152 plane_req->src_y > fb_height - plane_req->src_h) {
2153 DRM_DEBUG_KMS("Invalid source coordinates "
2154 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2155 plane_req->src_w >> 16,
2156 ((plane_req->src_w & 0xffff) * 15625) >> 10,
2157 plane_req->src_h >> 16,
2158 ((plane_req->src_h & 0xffff) * 15625) >> 10,
2159 plane_req->src_x >> 16,
2160 ((plane_req->src_x & 0xffff) * 15625) >> 10,
2161 plane_req->src_y >> 16,
2162 ((plane_req->src_y & 0xffff) * 15625) >> 10);
2167 /* Give drivers some help against integer overflows */
2168 if (plane_req->crtc_w > INT_MAX ||
2169 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2170 plane_req->crtc_h > INT_MAX ||
2171 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2172 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2173 plane_req->crtc_w, plane_req->crtc_h,
2174 plane_req->crtc_x, plane_req->crtc_y);
2179 drm_modeset_lock_all(dev);
2180 ret = plane->funcs->update_plane(plane, crtc, fb,
2181 plane_req->crtc_x, plane_req->crtc_y,
2182 plane_req->crtc_w, plane_req->crtc_h,
2183 plane_req->src_x, plane_req->src_y,
2184 plane_req->src_w, plane_req->src_h);
2191 drm_modeset_unlock_all(dev);
2195 drm_framebuffer_unreference(fb);
2197 drm_framebuffer_unreference(old_fb);
2203 * drm_mode_set_config_internal - helper to call ->set_config
2204 * @set: modeset config to set
2206 * This is a little helper to wrap internal calls to the ->set_config driver
2207 * interface. The only thing it adds is correct refcounting dance.
2210 * Zero on success, errno on failure.
2212 int drm_mode_set_config_internal(struct drm_mode_set *set)
2214 struct drm_crtc *crtc = set->crtc;
2215 struct drm_framebuffer *fb;
2216 struct drm_crtc *tmp;
2220 * NOTE: ->set_config can also disable other crtcs (if we steal all
2221 * connectors from it), hence we need to refcount the fbs across all
2222 * crtcs. Atomic modeset will have saner semantics ...
2224 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
2225 tmp->old_fb = tmp->primary->fb;
2229 ret = crtc->funcs->set_config(set);
2231 crtc->primary->crtc = crtc;
2233 /* crtc->fb must be updated by ->set_config, enforces this. */
2234 WARN_ON(fb != crtc->primary->fb);
2237 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
2238 if (tmp->primary->fb)
2239 drm_framebuffer_reference(tmp->primary->fb);
2241 drm_framebuffer_unreference(tmp->old_fb);
2246 EXPORT_SYMBOL(drm_mode_set_config_internal);
2249 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2251 * @crtc: CRTC that framebuffer will be displayed on
2254 * @mode: mode that framebuffer will be displayed under
2255 * @fb: framebuffer to check size of
2257 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2259 const struct drm_display_mode *mode,
2260 const struct drm_framebuffer *fb)
2263 int hdisplay, vdisplay;
2265 hdisplay = mode->hdisplay;
2266 vdisplay = mode->vdisplay;
2268 if (drm_mode_is_stereo(mode)) {
2269 struct drm_display_mode adjusted = *mode;
2271 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE);
2272 hdisplay = adjusted.crtc_hdisplay;
2273 vdisplay = adjusted.crtc_vdisplay;
2276 if (crtc->invert_dimensions)
2277 swap(hdisplay, vdisplay);
2279 if (hdisplay > fb->width ||
2280 vdisplay > fb->height ||
2281 x > fb->width - hdisplay ||
2282 y > fb->height - vdisplay) {
2283 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2284 fb->width, fb->height, hdisplay, vdisplay, x, y,
2285 crtc->invert_dimensions ? " (inverted)" : "");
2291 EXPORT_SYMBOL(drm_crtc_check_viewport);
2294 * drm_mode_setcrtc - set CRTC configuration
2295 * @dev: drm device for the ioctl
2296 * @data: data pointer for the ioctl
2297 * @file_priv: drm file for the ioctl call
2299 * Build a new CRTC configuration based on user request.
2301 * Called by the user via ioctl.
2304 * Zero on success, errno on failure.
2306 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2307 struct drm_file *file_priv)
2309 struct drm_mode_config *config = &dev->mode_config;
2310 struct drm_mode_crtc *crtc_req = data;
2311 struct drm_mode_object *obj;
2312 struct drm_crtc *crtc;
2313 struct drm_connector **connector_set = NULL, *connector;
2314 struct drm_framebuffer *fb = NULL;
2315 struct drm_display_mode *mode = NULL;
2316 struct drm_mode_set set;
2317 uint32_t __user *set_connectors_ptr;
2321 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2324 /* For some reason crtc x/y offsets are signed internally. */
2325 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2328 drm_modeset_lock_all(dev);
2329 obj = drm_mode_object_find(dev, crtc_req->crtc_id,
2330 DRM_MODE_OBJECT_CRTC);
2332 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2336 crtc = obj_to_crtc(obj);
2337 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2339 if (crtc_req->mode_valid) {
2340 /* If we have a mode we need a framebuffer. */
2341 /* If we pass -1, set the mode with the currently bound fb */
2342 if (crtc_req->fb_id == -1) {
2343 if (!crtc->primary->fb) {
2344 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2348 fb = crtc->primary->fb;
2349 /* Make refcounting symmetric with the lookup path. */
2350 drm_framebuffer_reference(fb);
2352 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2354 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2361 mode = drm_mode_create(dev);
2367 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2369 DRM_DEBUG_KMS("Invalid mode\n");
2373 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2375 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2382 if (crtc_req->count_connectors == 0 && mode) {
2383 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2388 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2389 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2390 crtc_req->count_connectors);
2395 if (crtc_req->count_connectors > 0) {
2398 /* Avoid unbounded kernel memory allocation */
2399 if (crtc_req->count_connectors > config->num_connector) {
2404 connector_set = kmalloc(crtc_req->count_connectors *
2405 sizeof(struct drm_connector *),
2407 if (!connector_set) {
2412 for (i = 0; i < crtc_req->count_connectors; i++) {
2413 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2414 if (get_user(out_id, &set_connectors_ptr[i])) {
2419 obj = drm_mode_object_find(dev, out_id,
2420 DRM_MODE_OBJECT_CONNECTOR);
2422 DRM_DEBUG_KMS("Connector id %d unknown\n",
2427 connector = obj_to_connector(obj);
2428 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2430 drm_get_connector_name(connector));
2432 connector_set[i] = connector;
2437 set.x = crtc_req->x;
2438 set.y = crtc_req->y;
2440 set.connectors = connector_set;
2441 set.num_connectors = crtc_req->count_connectors;
2443 ret = drm_mode_set_config_internal(&set);
2447 drm_framebuffer_unreference(fb);
2449 kfree(connector_set);
2450 drm_mode_destroy(dev, mode);
2451 drm_modeset_unlock_all(dev);
2455 static int drm_mode_cursor_common(struct drm_device *dev,
2456 struct drm_mode_cursor2 *req,
2457 struct drm_file *file_priv)
2459 struct drm_mode_object *obj;
2460 struct drm_crtc *crtc;
2463 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2466 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2469 obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
2471 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2474 crtc = obj_to_crtc(obj);
2476 mutex_lock(&crtc->mutex);
2477 if (req->flags & DRM_MODE_CURSOR_BO) {
2478 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
2482 /* Turns off the cursor if handle is 0 */
2483 if (crtc->funcs->cursor_set2)
2484 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2485 req->width, req->height, req->hot_x, req->hot_y);
2487 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2488 req->width, req->height);
2491 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2492 if (crtc->funcs->cursor_move) {
2493 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2500 mutex_unlock(&crtc->mutex);
2508 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2509 * @dev: drm device for the ioctl
2510 * @data: data pointer for the ioctl
2511 * @file_priv: drm file for the ioctl call
2513 * Set the cursor configuration based on user request.
2515 * Called by the user via ioctl.
2518 * Zero on success, errno on failure.
2520 int drm_mode_cursor_ioctl(struct drm_device *dev,
2521 void *data, struct drm_file *file_priv)
2523 struct drm_mode_cursor *req = data;
2524 struct drm_mode_cursor2 new_req;
2526 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2527 new_req.hot_x = new_req.hot_y = 0;
2529 return drm_mode_cursor_common(dev, &new_req, file_priv);
2533 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2534 * @dev: drm device for the ioctl
2535 * @data: data pointer for the ioctl
2536 * @file_priv: drm file for the ioctl call
2538 * Set the cursor configuration based on user request. This implements the 2nd
2539 * version of the cursor ioctl, which allows userspace to additionally specify
2540 * the hotspot of the pointer.
2542 * Called by the user via ioctl.
2545 * Zero on success, errno on failure.
2547 int drm_mode_cursor2_ioctl(struct drm_device *dev,
2548 void *data, struct drm_file *file_priv)
2550 struct drm_mode_cursor2 *req = data;
2551 return drm_mode_cursor_common(dev, req, file_priv);
2555 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2556 * @bpp: bits per pixels
2557 * @depth: bit depth per pixel
2559 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2560 * Useful in fbdev emulation code, since that deals in those values.
2562 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2568 fmt = DRM_FORMAT_C8;
2572 fmt = DRM_FORMAT_XRGB1555;
2574 fmt = DRM_FORMAT_RGB565;
2577 fmt = DRM_FORMAT_RGB888;
2581 fmt = DRM_FORMAT_XRGB8888;
2582 else if (depth == 30)
2583 fmt = DRM_FORMAT_XRGB2101010;
2585 fmt = DRM_FORMAT_ARGB8888;
2588 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2589 fmt = DRM_FORMAT_XRGB8888;
2595 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
2598 * drm_mode_addfb - add an FB to the graphics configuration
2599 * @dev: drm device for the ioctl
2600 * @data: data pointer for the ioctl
2601 * @file_priv: drm file for the ioctl call
2603 * Add a new FB to the specified CRTC, given a user request. This is the
2604 * original addfb ioclt which only supported RGB formats.
2606 * Called by the user via ioctl.
2609 * Zero on success, errno on failure.
2611 int drm_mode_addfb(struct drm_device *dev,
2612 void *data, struct drm_file *file_priv)
2614 struct drm_mode_fb_cmd *or = data;
2615 struct drm_mode_fb_cmd2 r = {};
2616 struct drm_mode_config *config = &dev->mode_config;
2617 struct drm_framebuffer *fb;
2620 /* Use new struct with format internally */
2621 r.fb_id = or->fb_id;
2622 r.width = or->width;
2623 r.height = or->height;
2624 r.pitches[0] = or->pitch;
2625 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
2626 r.handles[0] = or->handle;
2628 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2631 if ((config->min_width > r.width) || (r.width > config->max_width))
2634 if ((config->min_height > r.height) || (r.height > config->max_height))
2637 fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r);
2639 DRM_DEBUG_KMS("could not create framebuffer\n");
2643 mutex_lock(&file_priv->fbs_lock);
2644 or->fb_id = fb->base.id;
2645 list_add(&fb->filp_head, &file_priv->fbs);
2646 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2647 mutex_unlock(&file_priv->fbs_lock);
2652 static int format_check(const struct drm_mode_fb_cmd2 *r)
2654 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
2658 case DRM_FORMAT_RGB332:
2659 case DRM_FORMAT_BGR233:
2660 case DRM_FORMAT_XRGB4444:
2661 case DRM_FORMAT_XBGR4444:
2662 case DRM_FORMAT_RGBX4444:
2663 case DRM_FORMAT_BGRX4444:
2664 case DRM_FORMAT_ARGB4444:
2665 case DRM_FORMAT_ABGR4444:
2666 case DRM_FORMAT_RGBA4444:
2667 case DRM_FORMAT_BGRA4444:
2668 case DRM_FORMAT_XRGB1555:
2669 case DRM_FORMAT_XBGR1555:
2670 case DRM_FORMAT_RGBX5551:
2671 case DRM_FORMAT_BGRX5551:
2672 case DRM_FORMAT_ARGB1555:
2673 case DRM_FORMAT_ABGR1555:
2674 case DRM_FORMAT_RGBA5551:
2675 case DRM_FORMAT_BGRA5551:
2676 case DRM_FORMAT_RGB565:
2677 case DRM_FORMAT_BGR565:
2678 case DRM_FORMAT_RGB888:
2679 case DRM_FORMAT_BGR888:
2680 case DRM_FORMAT_XRGB8888:
2681 case DRM_FORMAT_XBGR8888:
2682 case DRM_FORMAT_RGBX8888:
2683 case DRM_FORMAT_BGRX8888:
2684 case DRM_FORMAT_ARGB8888:
2685 case DRM_FORMAT_ABGR8888:
2686 case DRM_FORMAT_RGBA8888:
2687 case DRM_FORMAT_BGRA8888:
2688 case DRM_FORMAT_XRGB2101010:
2689 case DRM_FORMAT_XBGR2101010:
2690 case DRM_FORMAT_RGBX1010102:
2691 case DRM_FORMAT_BGRX1010102:
2692 case DRM_FORMAT_ARGB2101010:
2693 case DRM_FORMAT_ABGR2101010:
2694 case DRM_FORMAT_RGBA1010102:
2695 case DRM_FORMAT_BGRA1010102:
2696 case DRM_FORMAT_YUYV:
2697 case DRM_FORMAT_YVYU:
2698 case DRM_FORMAT_UYVY:
2699 case DRM_FORMAT_VYUY:
2700 case DRM_FORMAT_AYUV:
2701 case DRM_FORMAT_NV12:
2702 case DRM_FORMAT_NV21:
2703 case DRM_FORMAT_NV16:
2704 case DRM_FORMAT_NV61:
2705 case DRM_FORMAT_NV24:
2706 case DRM_FORMAT_NV42:
2707 case DRM_FORMAT_YUV410:
2708 case DRM_FORMAT_YVU410:
2709 case DRM_FORMAT_YUV411:
2710 case DRM_FORMAT_YVU411:
2711 case DRM_FORMAT_YUV420:
2712 case DRM_FORMAT_YVU420:
2713 case DRM_FORMAT_YUV422:
2714 case DRM_FORMAT_YVU422:
2715 case DRM_FORMAT_YUV444:
2716 case DRM_FORMAT_YVU444:
2719 DRM_DEBUG_KMS("invalid pixel format %s\n",
2720 drm_get_format_name(r->pixel_format));
2725 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
2727 int ret, hsub, vsub, num_planes, i;
2729 ret = format_check(r);
2731 DRM_DEBUG_KMS("bad framebuffer format %s\n",
2732 drm_get_format_name(r->pixel_format));
2736 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
2737 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
2738 num_planes = drm_format_num_planes(r->pixel_format);
2740 if (r->width == 0 || r->width % hsub) {
2741 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->height);
2745 if (r->height == 0 || r->height % vsub) {
2746 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
2750 for (i = 0; i < num_planes; i++) {
2751 unsigned int width = r->width / (i != 0 ? hsub : 1);
2752 unsigned int height = r->height / (i != 0 ? vsub : 1);
2753 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
2755 if (!r->handles[i]) {
2756 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
2760 if ((uint64_t) width * cpp > UINT_MAX)
2763 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
2766 if (r->pitches[i] < width * cpp) {
2767 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
2776 * drm_mode_addfb2 - add an FB to the graphics configuration
2777 * @dev: drm device for the ioctl
2778 * @data: data pointer for the ioctl
2779 * @file_priv: drm file for the ioctl call
2781 * Add a new FB to the specified CRTC, given a user request with format. This is
2782 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
2783 * and uses fourcc codes as pixel format specifiers.
2785 * Called by the user via ioctl.
2788 * Zero on success, errno on failure.
2790 int drm_mode_addfb2(struct drm_device *dev,
2791 void *data, struct drm_file *file_priv)
2793 struct drm_mode_fb_cmd2 *r = data;
2794 struct drm_mode_config *config = &dev->mode_config;
2795 struct drm_framebuffer *fb;
2798 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2801 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
2802 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
2806 if ((config->min_width > r->width) || (r->width > config->max_width)) {
2807 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
2808 r->width, config->min_width, config->max_width);
2811 if ((config->min_height > r->height) || (r->height > config->max_height)) {
2812 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
2813 r->height, config->min_height, config->max_height);
2817 ret = framebuffer_check(r);
2821 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
2823 DRM_DEBUG_KMS("could not create framebuffer\n");
2827 mutex_lock(&file_priv->fbs_lock);
2828 r->fb_id = fb->base.id;
2829 list_add(&fb->filp_head, &file_priv->fbs);
2830 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2831 mutex_unlock(&file_priv->fbs_lock);
2838 * drm_mode_rmfb - remove an FB from the configuration
2839 * @dev: drm device for the ioctl
2840 * @data: data pointer for the ioctl
2841 * @file_priv: drm file for the ioctl call
2843 * Remove the FB specified by the user.
2845 * Called by the user via ioctl.
2848 * Zero on success, errno on failure.
2850 int drm_mode_rmfb(struct drm_device *dev,
2851 void *data, struct drm_file *file_priv)
2853 struct drm_framebuffer *fb = NULL;
2854 struct drm_framebuffer *fbl = NULL;
2855 uint32_t *id = data;
2858 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2861 mutex_lock(&file_priv->fbs_lock);
2862 mutex_lock(&dev->mode_config.fb_lock);
2863 fb = __drm_framebuffer_lookup(dev, *id);
2867 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
2873 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
2874 __drm_framebuffer_unregister(dev, fb);
2876 list_del_init(&fb->filp_head);
2877 mutex_unlock(&dev->mode_config.fb_lock);
2878 mutex_unlock(&file_priv->fbs_lock);
2880 drm_framebuffer_remove(fb);
2885 mutex_unlock(&dev->mode_config.fb_lock);
2886 mutex_unlock(&file_priv->fbs_lock);
2892 * drm_mode_getfb - get FB info
2893 * @dev: drm device for the ioctl
2894 * @data: data pointer for the ioctl
2895 * @file_priv: drm file for the ioctl call
2897 * Lookup the FB given its ID and return info about it.
2899 * Called by the user via ioctl.
2902 * Zero on success, errno on failure.
2904 int drm_mode_getfb(struct drm_device *dev,
2905 void *data, struct drm_file *file_priv)
2907 struct drm_mode_fb_cmd *r = data;
2908 struct drm_framebuffer *fb;
2911 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2914 fb = drm_framebuffer_lookup(dev, r->fb_id);
2918 r->height = fb->height;
2919 r->width = fb->width;
2920 r->depth = fb->depth;
2921 r->bpp = fb->bits_per_pixel;
2922 r->pitch = fb->pitches[0];
2923 if (fb->funcs->create_handle) {
2924 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
2925 drm_is_control_client(file_priv)) {
2926 ret = fb->funcs->create_handle(fb, file_priv,
2929 /* GET_FB() is an unprivileged ioctl so we must not
2930 * return a buffer-handle to non-master processes! For
2931 * backwards-compatibility reasons, we cannot make
2932 * GET_FB() privileged, so just return an invalid handle
2933 * for non-masters. */
2941 drm_framebuffer_unreference(fb);
2947 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
2948 * @dev: drm device for the ioctl
2949 * @data: data pointer for the ioctl
2950 * @file_priv: drm file for the ioctl call
2952 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
2953 * rectangle list. Generic userspace which does frontbuffer rendering must call
2954 * this ioctl to flush out the changes on manual-update display outputs, e.g.
2955 * usb display-link, mipi manual update panels or edp panel self refresh modes.
2957 * Modesetting drivers which always update the frontbuffer do not need to
2958 * implement the corresponding ->dirty framebuffer callback.
2960 * Called by the user via ioctl.
2963 * Zero on success, errno on failure.
2965 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
2966 void *data, struct drm_file *file_priv)
2968 struct drm_clip_rect __user *clips_ptr;
2969 struct drm_clip_rect *clips = NULL;
2970 struct drm_mode_fb_dirty_cmd *r = data;
2971 struct drm_framebuffer *fb;
2976 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2979 fb = drm_framebuffer_lookup(dev, r->fb_id);
2983 num_clips = r->num_clips;
2984 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
2986 if (!num_clips != !clips_ptr) {
2991 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
2993 /* If userspace annotates copy, clips must come in pairs */
2994 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
2999 if (num_clips && clips_ptr) {
3000 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3004 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
3010 ret = copy_from_user(clips, clips_ptr,
3011 num_clips * sizeof(*clips));
3018 if (fb->funcs->dirty) {
3019 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3028 drm_framebuffer_unreference(fb);
3035 * drm_fb_release - remove and free the FBs on this file
3036 * @priv: drm file for the ioctl
3038 * Destroy all the FBs associated with @filp.
3040 * Called by the user via ioctl.
3043 * Zero on success, errno on failure.
3045 void drm_fb_release(struct drm_file *priv)
3047 struct drm_device *dev = priv->minor->dev;
3048 struct drm_framebuffer *fb, *tfb;
3050 mutex_lock(&priv->fbs_lock);
3051 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3053 mutex_lock(&dev->mode_config.fb_lock);
3054 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3055 __drm_framebuffer_unregister(dev, fb);
3056 mutex_unlock(&dev->mode_config.fb_lock);
3058 list_del_init(&fb->filp_head);
3060 /* This will also drop the fpriv->fbs reference. */
3061 drm_framebuffer_remove(fb);
3063 mutex_unlock(&priv->fbs_lock);
3067 * drm_property_create - create a new property type
3069 * @flags: flags specifying the property type
3070 * @name: name of the property
3071 * @num_values: number of pre-defined values
3073 * This creates a new generic drm property which can then be attached to a drm
3074 * object with drm_object_attach_property. The returned property object must be
3075 * freed with drm_property_destroy.
3078 * A pointer to the newly created property on success, NULL on failure.
3080 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3081 const char *name, int num_values)
3083 struct drm_property *property = NULL;
3086 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3091 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
3092 if (!property->values)
3096 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3100 property->flags = flags;
3101 property->num_values = num_values;
3102 INIT_LIST_HEAD(&property->enum_blob_list);
3105 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3106 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3109 list_add_tail(&property->head, &dev->mode_config.property_list);
3112 kfree(property->values);
3116 EXPORT_SYMBOL(drm_property_create);
3119 * drm_property_create - create a new enumeration property type
3121 * @flags: flags specifying the property type
3122 * @name: name of the property
3123 * @props: enumeration lists with property values
3124 * @num_values: number of pre-defined values
3126 * This creates a new generic drm property which can then be attached to a drm
3127 * object with drm_object_attach_property. The returned property object must be
3128 * freed with drm_property_destroy.
3130 * Userspace is only allowed to set one of the predefined values for enumeration
3134 * A pointer to the newly created property on success, NULL on failure.
3136 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3138 const struct drm_prop_enum_list *props,
3141 struct drm_property *property;
3144 flags |= DRM_MODE_PROP_ENUM;
3146 property = drm_property_create(dev, flags, name, num_values);
3150 for (i = 0; i < num_values; i++) {
3151 ret = drm_property_add_enum(property, i,
3155 drm_property_destroy(dev, property);
3162 EXPORT_SYMBOL(drm_property_create_enum);
3165 * drm_property_create - create a new bitmask property type
3167 * @flags: flags specifying the property type
3168 * @name: name of the property
3169 * @props: enumeration lists with property bitflags
3170 * @num_values: number of pre-defined values
3172 * This creates a new generic drm property which can then be attached to a drm
3173 * object with drm_object_attach_property. The returned property object must be
3174 * freed with drm_property_destroy.
3176 * Compared to plain enumeration properties userspace is allowed to set any
3177 * or'ed together combination of the predefined property bitflag values
3180 * A pointer to the newly created property on success, NULL on failure.
3182 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3183 int flags, const char *name,
3184 const struct drm_prop_enum_list *props,
3187 struct drm_property *property;
3190 flags |= DRM_MODE_PROP_BITMASK;
3192 property = drm_property_create(dev, flags, name, num_values);
3196 for (i = 0; i < num_values; i++) {
3197 ret = drm_property_add_enum(property, i,
3201 drm_property_destroy(dev, property);
3208 EXPORT_SYMBOL(drm_property_create_bitmask);
3211 * drm_property_create - create a new ranged property type
3213 * @flags: flags specifying the property type
3214 * @name: name of the property
3215 * @min: minimum value of the property
3216 * @max: maximum value of the property
3218 * This creates a new generic drm property which can then be attached to a drm
3219 * object with drm_object_attach_property. The returned property object must be
3220 * freed with drm_property_destroy.
3222 * Userspace is allowed to set any interger value in the (min, max) range
3226 * A pointer to the newly created property on success, NULL on failure.
3228 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3230 uint64_t min, uint64_t max)
3232 struct drm_property *property;
3234 flags |= DRM_MODE_PROP_RANGE;
3236 property = drm_property_create(dev, flags, name, 2);
3240 property->values[0] = min;
3241 property->values[1] = max;
3245 EXPORT_SYMBOL(drm_property_create_range);
3248 * drm_property_add_enum - add a possible value to an enumeration property
3249 * @property: enumeration property to change
3250 * @index: index of the new enumeration
3251 * @value: value of the new enumeration
3252 * @name: symbolic name of the new enumeration
3254 * This functions adds enumerations to a property.
3256 * It's use is deprecated, drivers should use one of the more specific helpers
3257 * to directly create the property with all enumerations already attached.
3260 * Zero on success, error code on failure.
3262 int drm_property_add_enum(struct drm_property *property, int index,
3263 uint64_t value, const char *name)
3265 struct drm_property_enum *prop_enum;
3267 if (!(property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)))
3271 * Bitmask enum properties have the additional constraint of values
3274 if ((property->flags & DRM_MODE_PROP_BITMASK) && (value > 63))
3277 if (!list_empty(&property->enum_blob_list)) {
3278 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3279 if (prop_enum->value == value) {
3280 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3281 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3287 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3291 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3292 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3293 prop_enum->value = value;
3295 property->values[index] = value;
3296 list_add_tail(&prop_enum->head, &property->enum_blob_list);
3299 EXPORT_SYMBOL(drm_property_add_enum);
3302 * drm_property_destroy - destroy a drm property
3304 * @property: property to destry
3306 * This function frees a property including any attached resources like
3307 * enumeration values.
3309 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3311 struct drm_property_enum *prop_enum, *pt;
3313 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
3314 list_del(&prop_enum->head);
3318 if (property->num_values)
3319 kfree(property->values);
3320 drm_mode_object_put(dev, &property->base);
3321 list_del(&property->head);
3324 EXPORT_SYMBOL(drm_property_destroy);
3327 * drm_object_attach_property - attach a property to a modeset object
3328 * @obj: drm modeset object
3329 * @property: property to attach
3330 * @init_val: initial value of the property
3332 * This attaches the given property to the modeset object with the given initial
3333 * value. Currently this function cannot fail since the properties are stored in
3334 * a statically sized array.
3336 void drm_object_attach_property(struct drm_mode_object *obj,
3337 struct drm_property *property,
3340 int count = obj->properties->count;
3342 if (count == DRM_OBJECT_MAX_PROPERTY) {
3343 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3344 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3345 "you see this message on the same object type.\n",
3350 obj->properties->ids[count] = property->base.id;
3351 obj->properties->values[count] = init_val;
3352 obj->properties->count++;
3354 EXPORT_SYMBOL(drm_object_attach_property);
3357 * drm_object_property_set_value - set the value of a property
3358 * @obj: drm mode object to set property value for
3359 * @property: property to set
3360 * @val: value the property should be set to
3362 * This functions sets a given property on a given object. This function only
3363 * changes the software state of the property, it does not call into the
3364 * driver's ->set_property callback.
3367 * Zero on success, error code on failure.
3369 int drm_object_property_set_value(struct drm_mode_object *obj,
3370 struct drm_property *property, uint64_t val)
3374 for (i = 0; i < obj->properties->count; i++) {
3375 if (obj->properties->ids[i] == property->base.id) {
3376 obj->properties->values[i] = val;
3383 EXPORT_SYMBOL(drm_object_property_set_value);
3386 * drm_object_property_get_value - retrieve the value of a property
3387 * @obj: drm mode object to get property value from
3388 * @property: property to retrieve
3389 * @val: storage for the property value
3391 * This function retrieves the softare state of the given property for the given
3392 * property. Since there is no driver callback to retrieve the current property
3393 * value this might be out of sync with the hardware, depending upon the driver
3397 * Zero on success, error code on failure.
3399 int drm_object_property_get_value(struct drm_mode_object *obj,
3400 struct drm_property *property, uint64_t *val)
3404 for (i = 0; i < obj->properties->count; i++) {
3405 if (obj->properties->ids[i] == property->base.id) {
3406 *val = obj->properties->values[i];
3413 EXPORT_SYMBOL(drm_object_property_get_value);
3416 * drm_mode_getproperty_ioctl - get the current value of a connector's property
3419 * @file_priv: DRM file info
3421 * This function retrieves the current value for an connectors's property.
3423 * Called by the user via ioctl.
3426 * Zero on success, errno on failure.
3428 int drm_mode_getproperty_ioctl(struct drm_device *dev,
3429 void *data, struct drm_file *file_priv)
3431 struct drm_mode_object *obj;
3432 struct drm_mode_get_property *out_resp = data;
3433 struct drm_property *property;
3436 int value_count = 0;
3439 struct drm_property_enum *prop_enum;
3440 struct drm_mode_property_enum __user *enum_ptr;
3441 struct drm_property_blob *prop_blob;
3442 uint32_t __user *blob_id_ptr;
3443 uint64_t __user *values_ptr;
3444 uint32_t __user *blob_length_ptr;
3446 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3449 drm_modeset_lock_all(dev);
3450 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
3455 property = obj_to_property(obj);
3457 if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) {
3458 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
3460 } else if (property->flags & DRM_MODE_PROP_BLOB) {
3461 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
3465 value_count = property->num_values;
3467 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
3468 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
3469 out_resp->flags = property->flags;
3471 if ((out_resp->count_values >= value_count) && value_count) {
3472 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
3473 for (i = 0; i < value_count; i++) {
3474 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
3480 out_resp->count_values = value_count;
3482 if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) {
3483 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
3485 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3486 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3488 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
3493 if (copy_to_user(&enum_ptr[copied].name,
3494 &prop_enum->name, DRM_PROP_NAME_LEN)) {
3501 out_resp->count_enum_blobs = enum_count;
3504 if (property->flags & DRM_MODE_PROP_BLOB) {
3505 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
3507 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr;
3508 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr;
3510 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
3511 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
3516 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
3524 out_resp->count_enum_blobs = blob_count;
3527 drm_modeset_unlock_all(dev);
3531 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
3534 struct drm_property_blob *blob;
3537 if (!length || !data)
3540 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
3544 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
3550 blob->length = length;
3552 memcpy(blob->data, data, length);
3554 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
3558 static void drm_property_destroy_blob(struct drm_device *dev,
3559 struct drm_property_blob *blob)
3561 drm_mode_object_put(dev, &blob->base);
3562 list_del(&blob->head);
3567 * drm_mode_getblob_ioctl - get the contents of a blob property value
3570 * @file_priv: DRM file info
3572 * This function retrieves the contents of a blob property. The value stored in
3573 * an object's blob property is just a normal modeset object id.
3575 * Called by the user via ioctl.
3578 * Zero on success, errno on failure.
3580 int drm_mode_getblob_ioctl(struct drm_device *dev,
3581 void *data, struct drm_file *file_priv)
3583 struct drm_mode_object *obj;
3584 struct drm_mode_get_blob *out_resp = data;
3585 struct drm_property_blob *blob;
3587 void __user *blob_ptr;
3589 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3592 drm_modeset_lock_all(dev);
3593 obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
3598 blob = obj_to_blob(obj);
3600 if (out_resp->length == blob->length) {
3601 blob_ptr = (void __user *)(unsigned long)out_resp->data;
3602 if (copy_to_user(blob_ptr, blob->data, blob->length)){
3607 out_resp->length = blob->length;
3610 drm_modeset_unlock_all(dev);
3615 * drm_mode_connector_update_edid_property - update the edid property of a connector
3616 * @connector: drm connector
3617 * @edid: new value of the edid property
3619 * This function creates a new blob modeset object and assigns its id to the
3620 * connector's edid property.
3623 * Zero on success, errno on failure.
3625 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
3628 struct drm_device *dev = connector->dev;
3631 if (connector->edid_blob_ptr)
3632 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
3634 /* Delete edid, when there is none. */
3636 connector->edid_blob_ptr = NULL;
3637 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
3641 size = EDID_LENGTH * (1 + edid->extensions);
3642 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
3644 if (!connector->edid_blob_ptr)
3647 ret = drm_object_property_set_value(&connector->base,
3648 dev->mode_config.edid_property,
3649 connector->edid_blob_ptr->base.id);
3653 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
3655 static bool drm_property_change_is_valid(struct drm_property *property,
3658 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
3660 if (property->flags & DRM_MODE_PROP_RANGE) {
3661 if (value < property->values[0] || value > property->values[1])
3664 } else if (property->flags & DRM_MODE_PROP_BITMASK) {
3666 uint64_t valid_mask = 0;
3667 for (i = 0; i < property->num_values; i++)
3668 valid_mask |= (1ULL << property->values[i]);
3669 return !(value & ~valid_mask);
3670 } else if (property->flags & DRM_MODE_PROP_BLOB) {
3671 /* Only the driver knows */
3675 for (i = 0; i < property->num_values; i++)
3676 if (property->values[i] == value)
3683 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
3686 * @file_priv: DRM file info
3688 * This function sets the current value for a connectors's property. It also
3689 * calls into a driver's ->set_property callback to update the hardware state
3691 * Called by the user via ioctl.
3694 * Zero on success, errno on failure.
3696 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
3697 void *data, struct drm_file *file_priv)
3699 struct drm_mode_connector_set_property *conn_set_prop = data;
3700 struct drm_mode_obj_set_property obj_set_prop = {
3701 .value = conn_set_prop->value,
3702 .prop_id = conn_set_prop->prop_id,
3703 .obj_id = conn_set_prop->connector_id,
3704 .obj_type = DRM_MODE_OBJECT_CONNECTOR
3707 /* It does all the locking and checking we need */
3708 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
3711 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
3712 struct drm_property *property,
3716 struct drm_connector *connector = obj_to_connector(obj);
3718 /* Do DPMS ourselves */
3719 if (property == connector->dev->mode_config.dpms_property) {
3720 if (connector->funcs->dpms)
3721 (*connector->funcs->dpms)(connector, (int)value);
3723 } else if (connector->funcs->set_property)
3724 ret = connector->funcs->set_property(connector, property, value);
3726 /* store the property value if successful */
3728 drm_object_property_set_value(&connector->base, property, value);
3732 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
3733 struct drm_property *property,
3737 struct drm_crtc *crtc = obj_to_crtc(obj);
3739 if (crtc->funcs->set_property)
3740 ret = crtc->funcs->set_property(crtc, property, value);
3742 drm_object_property_set_value(obj, property, value);
3747 static int drm_mode_plane_set_obj_prop(struct drm_mode_object *obj,
3748 struct drm_property *property,
3752 struct drm_plane *plane = obj_to_plane(obj);
3754 if (plane->funcs->set_property)
3755 ret = plane->funcs->set_property(plane, property, value);
3757 drm_object_property_set_value(obj, property, value);
3763 * drm_mode_getproperty_ioctl - get the current value of a object's property
3766 * @file_priv: DRM file info
3768 * This function retrieves the current value for an object's property. Compared
3769 * to the connector specific ioctl this one is extended to also work on crtc and
3772 * Called by the user via ioctl.
3775 * Zero on success, errno on failure.
3777 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
3778 struct drm_file *file_priv)
3780 struct drm_mode_obj_get_properties *arg = data;
3781 struct drm_mode_object *obj;
3785 int props_count = 0;
3786 uint32_t __user *props_ptr;
3787 uint64_t __user *prop_values_ptr;
3789 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3792 drm_modeset_lock_all(dev);
3794 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
3799 if (!obj->properties) {
3804 props_count = obj->properties->count;
3806 /* This ioctl is called twice, once to determine how much space is
3807 * needed, and the 2nd time to fill it. */
3808 if ((arg->count_props >= props_count) && props_count) {
3810 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
3811 prop_values_ptr = (uint64_t __user *)(unsigned long)
3812 (arg->prop_values_ptr);
3813 for (i = 0; i < props_count; i++) {
3814 if (put_user(obj->properties->ids[i],
3815 props_ptr + copied)) {
3819 if (put_user(obj->properties->values[i],
3820 prop_values_ptr + copied)) {
3827 arg->count_props = props_count;
3829 drm_modeset_unlock_all(dev);
3834 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
3837 * @file_priv: DRM file info
3839 * This function sets the current value for an object's property. It also calls
3840 * into a driver's ->set_property callback to update the hardware state.
3841 * Compared to the connector specific ioctl this one is extended to also work on
3842 * crtc and plane objects.
3844 * Called by the user via ioctl.
3847 * Zero on success, errno on failure.
3849 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
3850 struct drm_file *file_priv)
3852 struct drm_mode_obj_set_property *arg = data;
3853 struct drm_mode_object *arg_obj;
3854 struct drm_mode_object *prop_obj;
3855 struct drm_property *property;
3859 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3862 drm_modeset_lock_all(dev);
3864 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
3869 if (!arg_obj->properties)
3872 for (i = 0; i < arg_obj->properties->count; i++)
3873 if (arg_obj->properties->ids[i] == arg->prop_id)
3876 if (i == arg_obj->properties->count)
3879 prop_obj = drm_mode_object_find(dev, arg->prop_id,
3880 DRM_MODE_OBJECT_PROPERTY);
3885 property = obj_to_property(prop_obj);
3887 if (!drm_property_change_is_valid(property, arg->value))
3890 switch (arg_obj->type) {
3891 case DRM_MODE_OBJECT_CONNECTOR:
3892 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
3895 case DRM_MODE_OBJECT_CRTC:
3896 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
3898 case DRM_MODE_OBJECT_PLANE:
3899 ret = drm_mode_plane_set_obj_prop(arg_obj, property, arg->value);
3904 drm_modeset_unlock_all(dev);
3909 * drm_mode_connector_attach_encoder - attach a connector to an encoder
3910 * @connector: connector to attach
3911 * @encoder: encoder to attach @connector to
3913 * This function links up a connector to an encoder. Note that the routing
3914 * restrictions between encoders and crtcs are exposed to userspace through the
3915 * possible_clones and possible_crtcs bitmasks.
3918 * Zero on success, errno on failure.
3920 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
3921 struct drm_encoder *encoder)
3925 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
3926 if (connector->encoder_ids[i] == 0) {
3927 connector->encoder_ids[i] = encoder->base.id;
3933 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
3936 * drm_mode_crtc_set_gamma_size - set the gamma table size
3937 * @crtc: CRTC to set the gamma table size for
3938 * @gamma_size: size of the gamma table
3940 * Drivers which support gamma tables should set this to the supported gamma
3941 * table size when initializing the CRTC. Currently the drm core only supports a
3942 * fixed gamma table size.
3945 * Zero on success, errno on failure.
3947 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
3950 crtc->gamma_size = gamma_size;
3952 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
3953 if (!crtc->gamma_store) {
3954 crtc->gamma_size = 0;
3960 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
3963 * drm_mode_gamma_set_ioctl - set the gamma table
3966 * @file_priv: DRM file info
3968 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
3969 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
3971 * Called by the user via ioctl.
3974 * Zero on success, errno on failure.
3976 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
3977 void *data, struct drm_file *file_priv)
3979 struct drm_mode_crtc_lut *crtc_lut = data;
3980 struct drm_mode_object *obj;
3981 struct drm_crtc *crtc;
3982 void *r_base, *g_base, *b_base;
3986 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3989 drm_modeset_lock_all(dev);
3990 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
3995 crtc = obj_to_crtc(obj);
3997 if (crtc->funcs->gamma_set == NULL) {
4002 /* memcpy into gamma store */
4003 if (crtc_lut->gamma_size != crtc->gamma_size) {
4008 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4009 r_base = crtc->gamma_store;
4010 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4015 g_base = r_base + size;
4016 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4021 b_base = g_base + size;
4022 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4027 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
4030 drm_modeset_unlock_all(dev);
4036 * drm_mode_gamma_get_ioctl - get the gamma table
4039 * @file_priv: DRM file info
4041 * Copy the current gamma table into the storage provided. This also provides
4042 * the gamma table size the driver expects, which can be used to size the
4043 * allocated storage.
4045 * Called by the user via ioctl.
4048 * Zero on success, errno on failure.
4050 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4051 void *data, struct drm_file *file_priv)
4053 struct drm_mode_crtc_lut *crtc_lut = data;
4054 struct drm_mode_object *obj;
4055 struct drm_crtc *crtc;
4056 void *r_base, *g_base, *b_base;
4060 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4063 drm_modeset_lock_all(dev);
4064 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
4069 crtc = obj_to_crtc(obj);
4071 /* memcpy into gamma store */
4072 if (crtc_lut->gamma_size != crtc->gamma_size) {
4077 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4078 r_base = crtc->gamma_store;
4079 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4084 g_base = r_base + size;
4085 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4090 b_base = g_base + size;
4091 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4096 drm_modeset_unlock_all(dev);
4101 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4104 * @file_priv: DRM file info
4106 * This schedules an asynchronous update on a given CRTC, called page flip.
4107 * Optionally a drm event is generated to signal the completion of the event.
4108 * Generic drivers cannot assume that a pageflip with changed framebuffer
4109 * properties (including driver specific metadata like tiling layout) will work,
4110 * but some drivers support e.g. pixel format changes through the pageflip
4113 * Called by the user via ioctl.
4116 * Zero on success, errno on failure.
4118 int drm_mode_page_flip_ioctl(struct drm_device *dev,
4119 void *data, struct drm_file *file_priv)
4121 struct drm_mode_crtc_page_flip *page_flip = data;
4122 struct drm_mode_object *obj;
4123 struct drm_crtc *crtc;
4124 struct drm_framebuffer *fb = NULL, *old_fb = NULL;
4125 struct drm_pending_vblank_event *e = NULL;
4126 unsigned long flags;
4129 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4130 page_flip->reserved != 0)
4133 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4136 obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC);
4139 crtc = obj_to_crtc(obj);
4141 mutex_lock(&crtc->mutex);
4142 if (crtc->primary->fb == NULL) {
4143 /* The framebuffer is currently unbound, presumably
4144 * due to a hotplug event, that userspace has not
4151 if (crtc->funcs->page_flip == NULL)
4154 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
4160 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4164 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
4165 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4170 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4172 spin_lock_irqsave(&dev->event_lock, flags);
4173 if (file_priv->event_space < sizeof e->event) {
4174 spin_unlock_irqrestore(&dev->event_lock, flags);
4177 file_priv->event_space -= sizeof e->event;
4178 spin_unlock_irqrestore(&dev->event_lock, flags);
4180 e = kzalloc(sizeof *e, GFP_KERNEL);
4182 spin_lock_irqsave(&dev->event_lock, flags);
4183 file_priv->event_space += sizeof e->event;
4184 spin_unlock_irqrestore(&dev->event_lock, flags);
4188 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
4189 e->event.base.length = sizeof e->event;
4190 e->event.user_data = page_flip->user_data;
4191 e->base.event = &e->event.base;
4192 e->base.file_priv = file_priv;
4194 (void (*) (struct drm_pending_event *)) kfree;
4197 old_fb = crtc->primary->fb;
4198 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
4200 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4201 spin_lock_irqsave(&dev->event_lock, flags);
4202 file_priv->event_space += sizeof e->event;
4203 spin_unlock_irqrestore(&dev->event_lock, flags);
4206 /* Keep the old fb, don't unref it. */
4210 * Warn if the driver hasn't properly updated the crtc->fb
4211 * field to reflect that the new framebuffer is now used.
4212 * Failing to do so will screw with the reference counting
4215 WARN_ON(crtc->primary->fb != fb);
4216 /* Unref only the old framebuffer. */
4222 drm_framebuffer_unreference(fb);
4224 drm_framebuffer_unreference(old_fb);
4225 mutex_unlock(&crtc->mutex);
4231 * drm_mode_config_reset - call ->reset callbacks
4234 * This functions calls all the crtc's, encoder's and connector's ->reset
4235 * callback. Drivers can use this in e.g. their driver load or resume code to
4236 * reset hardware and software state.
4238 void drm_mode_config_reset(struct drm_device *dev)
4240 struct drm_crtc *crtc;
4241 struct drm_encoder *encoder;
4242 struct drm_connector *connector;
4244 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4245 if (crtc->funcs->reset)
4246 crtc->funcs->reset(crtc);
4248 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4249 if (encoder->funcs->reset)
4250 encoder->funcs->reset(encoder);
4252 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4253 connector->status = connector_status_unknown;
4255 if (connector->funcs->reset)
4256 connector->funcs->reset(connector);
4259 EXPORT_SYMBOL(drm_mode_config_reset);
4262 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4265 * @file_priv: DRM file info
4267 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4268 * TTM or something else entirely) and returns the resulting buffer handle. This
4269 * handle can then be wrapped up into a framebuffer modeset object.
4271 * Note that userspace is not allowed to use such objects for render
4272 * acceleration - drivers must create their own private ioctls for such a use
4275 * Called by the user via ioctl.
4278 * Zero on success, errno on failure.
4280 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
4281 void *data, struct drm_file *file_priv)
4283 struct drm_mode_create_dumb *args = data;
4284 u32 cpp, stride, size;
4286 if (!dev->driver->dumb_create)
4288 if (!args->width || !args->height || !args->bpp)
4291 /* overflow checks for 32bit size calculations */
4292 cpp = DIV_ROUND_UP(args->bpp, 8);
4293 if (cpp > 0xffffffffU / args->width)
4295 stride = cpp * args->width;
4296 if (args->height > 0xffffffffU / stride)
4299 /* test for wrap-around */
4300 size = args->height * stride;
4301 if (PAGE_ALIGN(size) == 0)
4304 return dev->driver->dumb_create(file_priv, dev, args);
4308 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4311 * @file_priv: DRM file info
4313 * Allocate an offset in the drm device node's address space to be able to
4314 * memory map a dumb buffer.
4316 * Called by the user via ioctl.
4319 * Zero on success, errno on failure.
4321 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
4322 void *data, struct drm_file *file_priv)
4324 struct drm_mode_map_dumb *args = data;
4326 /* call driver ioctl to get mmap offset */
4327 if (!dev->driver->dumb_map_offset)
4330 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
4334 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4337 * @file_priv: DRM file info
4339 * This destroys the userspace handle for the given dumb backing storage buffer.
4340 * Since buffer objects must be reference counted in the kernel a buffer object
4341 * won't be immediately freed if a framebuffer modeset object still uses it.
4343 * Called by the user via ioctl.
4346 * Zero on success, errno on failure.
4348 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
4349 void *data, struct drm_file *file_priv)
4351 struct drm_mode_destroy_dumb *args = data;
4353 if (!dev->driver->dumb_destroy)
4356 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
4360 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4361 * @format: pixel format (DRM_FORMAT_*)
4362 * @depth: storage for the depth value
4363 * @bpp: storage for the bpp value
4365 * This only supports RGB formats here for compat with code that doesn't use
4366 * pixel formats directly yet.
4368 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
4373 case DRM_FORMAT_RGB332:
4374 case DRM_FORMAT_BGR233:
4378 case DRM_FORMAT_XRGB1555:
4379 case DRM_FORMAT_XBGR1555:
4380 case DRM_FORMAT_RGBX5551:
4381 case DRM_FORMAT_BGRX5551:
4382 case DRM_FORMAT_ARGB1555:
4383 case DRM_FORMAT_ABGR1555:
4384 case DRM_FORMAT_RGBA5551:
4385 case DRM_FORMAT_BGRA5551:
4389 case DRM_FORMAT_RGB565:
4390 case DRM_FORMAT_BGR565:
4394 case DRM_FORMAT_RGB888:
4395 case DRM_FORMAT_BGR888:
4399 case DRM_FORMAT_XRGB8888:
4400 case DRM_FORMAT_XBGR8888:
4401 case DRM_FORMAT_RGBX8888:
4402 case DRM_FORMAT_BGRX8888:
4406 case DRM_FORMAT_XRGB2101010:
4407 case DRM_FORMAT_XBGR2101010:
4408 case DRM_FORMAT_RGBX1010102:
4409 case DRM_FORMAT_BGRX1010102:
4410 case DRM_FORMAT_ARGB2101010:
4411 case DRM_FORMAT_ABGR2101010:
4412 case DRM_FORMAT_RGBA1010102:
4413 case DRM_FORMAT_BGRA1010102:
4417 case DRM_FORMAT_ARGB8888:
4418 case DRM_FORMAT_ABGR8888:
4419 case DRM_FORMAT_RGBA8888:
4420 case DRM_FORMAT_BGRA8888:
4425 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4426 drm_get_format_name(format));
4432 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
4435 * drm_format_num_planes - get the number of planes for format
4436 * @format: pixel format (DRM_FORMAT_*)
4439 * The number of planes used by the specified pixel format.
4441 int drm_format_num_planes(uint32_t format)
4444 case DRM_FORMAT_YUV410:
4445 case DRM_FORMAT_YVU410:
4446 case DRM_FORMAT_YUV411:
4447 case DRM_FORMAT_YVU411:
4448 case DRM_FORMAT_YUV420:
4449 case DRM_FORMAT_YVU420:
4450 case DRM_FORMAT_YUV422:
4451 case DRM_FORMAT_YVU422:
4452 case DRM_FORMAT_YUV444:
4453 case DRM_FORMAT_YVU444:
4455 case DRM_FORMAT_NV12:
4456 case DRM_FORMAT_NV21:
4457 case DRM_FORMAT_NV16:
4458 case DRM_FORMAT_NV61:
4459 case DRM_FORMAT_NV24:
4460 case DRM_FORMAT_NV42:
4466 EXPORT_SYMBOL(drm_format_num_planes);
4469 * drm_format_plane_cpp - determine the bytes per pixel value
4470 * @format: pixel format (DRM_FORMAT_*)
4471 * @plane: plane index
4474 * The bytes per pixel value for the specified plane.
4476 int drm_format_plane_cpp(uint32_t format, int plane)
4481 if (plane >= drm_format_num_planes(format))
4485 case DRM_FORMAT_YUYV:
4486 case DRM_FORMAT_YVYU:
4487 case DRM_FORMAT_UYVY:
4488 case DRM_FORMAT_VYUY:
4490 case DRM_FORMAT_NV12:
4491 case DRM_FORMAT_NV21:
4492 case DRM_FORMAT_NV16:
4493 case DRM_FORMAT_NV61:
4494 case DRM_FORMAT_NV24:
4495 case DRM_FORMAT_NV42:
4496 return plane ? 2 : 1;
4497 case DRM_FORMAT_YUV410:
4498 case DRM_FORMAT_YVU410:
4499 case DRM_FORMAT_YUV411:
4500 case DRM_FORMAT_YVU411:
4501 case DRM_FORMAT_YUV420:
4502 case DRM_FORMAT_YVU420:
4503 case DRM_FORMAT_YUV422:
4504 case DRM_FORMAT_YVU422:
4505 case DRM_FORMAT_YUV444:
4506 case DRM_FORMAT_YVU444:
4509 drm_fb_get_bpp_depth(format, &depth, &bpp);
4513 EXPORT_SYMBOL(drm_format_plane_cpp);
4516 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
4517 * @format: pixel format (DRM_FORMAT_*)
4520 * The horizontal chroma subsampling factor for the
4521 * specified pixel format.
4523 int drm_format_horz_chroma_subsampling(uint32_t format)
4526 case DRM_FORMAT_YUV411:
4527 case DRM_FORMAT_YVU411:
4528 case DRM_FORMAT_YUV410:
4529 case DRM_FORMAT_YVU410:
4531 case DRM_FORMAT_YUYV:
4532 case DRM_FORMAT_YVYU:
4533 case DRM_FORMAT_UYVY:
4534 case DRM_FORMAT_VYUY:
4535 case DRM_FORMAT_NV12:
4536 case DRM_FORMAT_NV21:
4537 case DRM_FORMAT_NV16:
4538 case DRM_FORMAT_NV61:
4539 case DRM_FORMAT_YUV422:
4540 case DRM_FORMAT_YVU422:
4541 case DRM_FORMAT_YUV420:
4542 case DRM_FORMAT_YVU420:
4548 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
4551 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
4552 * @format: pixel format (DRM_FORMAT_*)
4555 * The vertical chroma subsampling factor for the
4556 * specified pixel format.
4558 int drm_format_vert_chroma_subsampling(uint32_t format)
4561 case DRM_FORMAT_YUV410:
4562 case DRM_FORMAT_YVU410:
4564 case DRM_FORMAT_YUV420:
4565 case DRM_FORMAT_YVU420:
4566 case DRM_FORMAT_NV12:
4567 case DRM_FORMAT_NV21:
4573 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
4576 * drm_mode_config_init - initialize DRM mode_configuration structure
4579 * Initialize @dev's mode_config structure, used for tracking the graphics
4580 * configuration of @dev.
4582 * Since this initializes the modeset locks, no locking is possible. Which is no
4583 * problem, since this should happen single threaded at init time. It is the
4584 * driver's problem to ensure this guarantee.
4587 void drm_mode_config_init(struct drm_device *dev)
4589 mutex_init(&dev->mode_config.mutex);
4590 mutex_init(&dev->mode_config.idr_mutex);
4591 mutex_init(&dev->mode_config.fb_lock);
4592 INIT_LIST_HEAD(&dev->mode_config.fb_list);
4593 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
4594 INIT_LIST_HEAD(&dev->mode_config.connector_list);
4595 INIT_LIST_HEAD(&dev->mode_config.bridge_list);
4596 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
4597 INIT_LIST_HEAD(&dev->mode_config.property_list);
4598 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
4599 INIT_LIST_HEAD(&dev->mode_config.plane_list);
4600 idr_init(&dev->mode_config.crtc_idr);
4602 drm_modeset_lock_all(dev);
4603 drm_mode_create_standard_connector_properties(dev);
4604 drm_mode_create_standard_plane_properties(dev);
4605 drm_modeset_unlock_all(dev);
4607 /* Just to be sure */
4608 dev->mode_config.num_fb = 0;
4609 dev->mode_config.num_connector = 0;
4610 dev->mode_config.num_crtc = 0;
4611 dev->mode_config.num_encoder = 0;
4612 dev->mode_config.num_overlay_plane = 0;
4613 dev->mode_config.num_total_plane = 0;
4615 EXPORT_SYMBOL(drm_mode_config_init);
4618 * drm_mode_config_cleanup - free up DRM mode_config info
4621 * Free up all the connectors and CRTCs associated with this DRM device, then
4622 * free up the framebuffers and associated buffer objects.
4624 * Note that since this /should/ happen single-threaded at driver/device
4625 * teardown time, no locking is required. It's the driver's job to ensure that
4626 * this guarantee actually holds true.
4628 * FIXME: cleanup any dangling user buffer objects too
4630 void drm_mode_config_cleanup(struct drm_device *dev)
4632 struct drm_connector *connector, *ot;
4633 struct drm_crtc *crtc, *ct;
4634 struct drm_encoder *encoder, *enct;
4635 struct drm_bridge *bridge, *brt;
4636 struct drm_framebuffer *fb, *fbt;
4637 struct drm_property *property, *pt;
4638 struct drm_property_blob *blob, *bt;
4639 struct drm_plane *plane, *plt;
4641 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
4643 encoder->funcs->destroy(encoder);
4646 list_for_each_entry_safe(bridge, brt,
4647 &dev->mode_config.bridge_list, head) {
4648 bridge->funcs->destroy(bridge);
4651 list_for_each_entry_safe(connector, ot,
4652 &dev->mode_config.connector_list, head) {
4653 connector->funcs->destroy(connector);
4656 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
4658 drm_property_destroy(dev, property);
4661 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
4663 drm_property_destroy_blob(dev, blob);
4667 * Single-threaded teardown context, so it's not required to grab the
4668 * fb_lock to protect against concurrent fb_list access. Contrary, it
4669 * would actually deadlock with the drm_framebuffer_cleanup function.
4671 * Also, if there are any framebuffers left, that's a driver leak now,
4672 * so politely WARN about this.
4674 WARN_ON(!list_empty(&dev->mode_config.fb_list));
4675 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
4676 drm_framebuffer_remove(fb);
4679 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
4681 plane->funcs->destroy(plane);
4684 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
4685 crtc->funcs->destroy(crtc);
4688 idr_destroy(&dev->mode_config.crtc_idr);
4690 EXPORT_SYMBOL(drm_mode_config_cleanup);