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)
1148 struct drm_framebuffer *old_fb = plane->fb;
1154 ret = plane->funcs->disable_plane(plane);
1156 DRM_ERROR("failed to disable plane with busy fb\n");
1157 /* disconnect the plane from the fb and crtc: */
1158 __drm_framebuffer_unreference(old_fb);
1162 EXPORT_SYMBOL(drm_plane_force_disable);
1164 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
1166 struct drm_property *edid;
1167 struct drm_property *dpms;
1170 * Standard properties (apply to all connectors)
1172 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1173 DRM_MODE_PROP_IMMUTABLE,
1175 dev->mode_config.edid_property = edid;
1177 dpms = drm_property_create_enum(dev, 0,
1178 "DPMS", drm_dpms_enum_list,
1179 ARRAY_SIZE(drm_dpms_enum_list));
1180 dev->mode_config.dpms_property = dpms;
1185 static int drm_mode_create_standard_plane_properties(struct drm_device *dev)
1187 struct drm_property *type;
1190 * Standard properties (apply to all planes)
1192 type = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1193 "type", drm_plane_type_enum_list,
1194 ARRAY_SIZE(drm_plane_type_enum_list));
1195 dev->mode_config.plane_type_property = type;
1201 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1204 * Called by a driver the first time a DVI-I connector is made.
1206 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1208 struct drm_property *dvi_i_selector;
1209 struct drm_property *dvi_i_subconnector;
1211 if (dev->mode_config.dvi_i_select_subconnector_property)
1215 drm_property_create_enum(dev, 0,
1216 "select subconnector",
1217 drm_dvi_i_select_enum_list,
1218 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1219 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1221 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1223 drm_dvi_i_subconnector_enum_list,
1224 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1225 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1229 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1232 * drm_create_tv_properties - create TV specific connector properties
1234 * @num_modes: number of different TV formats (modes) supported
1235 * @modes: array of pointers to strings containing name of each format
1237 * Called by a driver's TV initialization routine, this function creates
1238 * the TV specific connector properties for a given device. Caller is
1239 * responsible for allocating a list of format names and passing them to
1242 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
1245 struct drm_property *tv_selector;
1246 struct drm_property *tv_subconnector;
1249 if (dev->mode_config.tv_select_subconnector_property)
1253 * Basic connector properties
1255 tv_selector = drm_property_create_enum(dev, 0,
1256 "select subconnector",
1257 drm_tv_select_enum_list,
1258 ARRAY_SIZE(drm_tv_select_enum_list));
1259 dev->mode_config.tv_select_subconnector_property = tv_selector;
1262 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1264 drm_tv_subconnector_enum_list,
1265 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1266 dev->mode_config.tv_subconnector_property = tv_subconnector;
1269 * Other, TV specific properties: margins & TV modes.
1271 dev->mode_config.tv_left_margin_property =
1272 drm_property_create_range(dev, 0, "left margin", 0, 100);
1274 dev->mode_config.tv_right_margin_property =
1275 drm_property_create_range(dev, 0, "right margin", 0, 100);
1277 dev->mode_config.tv_top_margin_property =
1278 drm_property_create_range(dev, 0, "top margin", 0, 100);
1280 dev->mode_config.tv_bottom_margin_property =
1281 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1283 dev->mode_config.tv_mode_property =
1284 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1286 for (i = 0; i < num_modes; i++)
1287 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1290 dev->mode_config.tv_brightness_property =
1291 drm_property_create_range(dev, 0, "brightness", 0, 100);
1293 dev->mode_config.tv_contrast_property =
1294 drm_property_create_range(dev, 0, "contrast", 0, 100);
1296 dev->mode_config.tv_flicker_reduction_property =
1297 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1299 dev->mode_config.tv_overscan_property =
1300 drm_property_create_range(dev, 0, "overscan", 0, 100);
1302 dev->mode_config.tv_saturation_property =
1303 drm_property_create_range(dev, 0, "saturation", 0, 100);
1305 dev->mode_config.tv_hue_property =
1306 drm_property_create_range(dev, 0, "hue", 0, 100);
1310 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1313 * drm_mode_create_scaling_mode_property - create scaling mode property
1316 * Called by a driver the first time it's needed, must be attached to desired
1319 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1321 struct drm_property *scaling_mode;
1323 if (dev->mode_config.scaling_mode_property)
1327 drm_property_create_enum(dev, 0, "scaling mode",
1328 drm_scaling_mode_enum_list,
1329 ARRAY_SIZE(drm_scaling_mode_enum_list));
1331 dev->mode_config.scaling_mode_property = scaling_mode;
1335 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1338 * drm_mode_create_dirty_property - create dirty property
1341 * Called by a driver the first time it's needed, must be attached to desired
1344 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1346 struct drm_property *dirty_info;
1348 if (dev->mode_config.dirty_info_property)
1352 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1354 drm_dirty_info_enum_list,
1355 ARRAY_SIZE(drm_dirty_info_enum_list));
1356 dev->mode_config.dirty_info_property = dirty_info;
1360 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1362 static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
1364 uint32_t total_objects = 0;
1366 total_objects += dev->mode_config.num_crtc;
1367 total_objects += dev->mode_config.num_connector;
1368 total_objects += dev->mode_config.num_encoder;
1369 total_objects += dev->mode_config.num_bridge;
1371 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
1372 if (!group->id_list)
1375 group->num_crtcs = 0;
1376 group->num_connectors = 0;
1377 group->num_encoders = 0;
1378 group->num_bridges = 0;
1383 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1384 * the drm core's responsibility to set up mode control groups.
1386 int drm_mode_group_init_legacy_group(struct drm_device *dev,
1387 struct drm_mode_group *group)
1389 struct drm_crtc *crtc;
1390 struct drm_encoder *encoder;
1391 struct drm_connector *connector;
1392 struct drm_bridge *bridge;
1395 if ((ret = drm_mode_group_init(dev, group)))
1398 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1399 group->id_list[group->num_crtcs++] = crtc->base.id;
1401 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1402 group->id_list[group->num_crtcs + group->num_encoders++] =
1405 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1406 group->id_list[group->num_crtcs + group->num_encoders +
1407 group->num_connectors++] = connector->base.id;
1409 list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
1410 group->id_list[group->num_crtcs + group->num_encoders +
1411 group->num_connectors + group->num_bridges++] =
1416 EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
1419 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1420 * @out: drm_mode_modeinfo struct to return to the user
1421 * @in: drm_display_mode to use
1423 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1426 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1427 const struct drm_display_mode *in)
1429 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1430 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1431 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1432 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1433 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1434 "timing values too large for mode info\n");
1436 out->clock = in->clock;
1437 out->hdisplay = in->hdisplay;
1438 out->hsync_start = in->hsync_start;
1439 out->hsync_end = in->hsync_end;
1440 out->htotal = in->htotal;
1441 out->hskew = in->hskew;
1442 out->vdisplay = in->vdisplay;
1443 out->vsync_start = in->vsync_start;
1444 out->vsync_end = in->vsync_end;
1445 out->vtotal = in->vtotal;
1446 out->vscan = in->vscan;
1447 out->vrefresh = in->vrefresh;
1448 out->flags = in->flags;
1449 out->type = in->type;
1450 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1451 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1455 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1456 * @out: drm_display_mode to return to the user
1457 * @in: drm_mode_modeinfo to use
1459 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1463 * Zero on success, errno on failure.
1465 static int drm_crtc_convert_umode(struct drm_display_mode *out,
1466 const struct drm_mode_modeinfo *in)
1468 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1471 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1474 out->clock = in->clock;
1475 out->hdisplay = in->hdisplay;
1476 out->hsync_start = in->hsync_start;
1477 out->hsync_end = in->hsync_end;
1478 out->htotal = in->htotal;
1479 out->hskew = in->hskew;
1480 out->vdisplay = in->vdisplay;
1481 out->vsync_start = in->vsync_start;
1482 out->vsync_end = in->vsync_end;
1483 out->vtotal = in->vtotal;
1484 out->vscan = in->vscan;
1485 out->vrefresh = in->vrefresh;
1486 out->flags = in->flags;
1487 out->type = in->type;
1488 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1489 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1495 * drm_mode_getresources - get graphics configuration
1496 * @dev: drm device for the ioctl
1497 * @data: data pointer for the ioctl
1498 * @file_priv: drm file for the ioctl call
1500 * Construct a set of configuration description structures and return
1501 * them to the user, including CRTC, connector and framebuffer configuration.
1503 * Called by the user via ioctl.
1506 * Zero on success, errno on failure.
1508 int drm_mode_getresources(struct drm_device *dev, void *data,
1509 struct drm_file *file_priv)
1511 struct drm_mode_card_res *card_res = data;
1512 struct list_head *lh;
1513 struct drm_framebuffer *fb;
1514 struct drm_connector *connector;
1515 struct drm_crtc *crtc;
1516 struct drm_encoder *encoder;
1518 int connector_count = 0;
1521 int encoder_count = 0;
1523 uint32_t __user *fb_id;
1524 uint32_t __user *crtc_id;
1525 uint32_t __user *connector_id;
1526 uint32_t __user *encoder_id;
1527 struct drm_mode_group *mode_group;
1529 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1533 mutex_lock(&file_priv->fbs_lock);
1535 * For the non-control nodes we need to limit the list of resources
1536 * by IDs in the group list for this node
1538 list_for_each(lh, &file_priv->fbs)
1541 /* handle this in 4 parts */
1543 if (card_res->count_fbs >= fb_count) {
1545 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1546 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1547 if (put_user(fb->base.id, fb_id + copied)) {
1548 mutex_unlock(&file_priv->fbs_lock);
1554 card_res->count_fbs = fb_count;
1555 mutex_unlock(&file_priv->fbs_lock);
1557 drm_modeset_lock_all(dev);
1558 if (!drm_is_primary_client(file_priv)) {
1561 list_for_each(lh, &dev->mode_config.crtc_list)
1564 list_for_each(lh, &dev->mode_config.connector_list)
1567 list_for_each(lh, &dev->mode_config.encoder_list)
1571 mode_group = &file_priv->master->minor->mode_group;
1572 crtc_count = mode_group->num_crtcs;
1573 connector_count = mode_group->num_connectors;
1574 encoder_count = mode_group->num_encoders;
1577 card_res->max_height = dev->mode_config.max_height;
1578 card_res->min_height = dev->mode_config.min_height;
1579 card_res->max_width = dev->mode_config.max_width;
1580 card_res->min_width = dev->mode_config.min_width;
1583 if (card_res->count_crtcs >= crtc_count) {
1585 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1587 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1589 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1590 if (put_user(crtc->base.id, crtc_id + copied)) {
1597 for (i = 0; i < mode_group->num_crtcs; i++) {
1598 if (put_user(mode_group->id_list[i],
1599 crtc_id + copied)) {
1607 card_res->count_crtcs = crtc_count;
1610 if (card_res->count_encoders >= encoder_count) {
1612 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1614 list_for_each_entry(encoder,
1615 &dev->mode_config.encoder_list,
1617 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1618 drm_get_encoder_name(encoder));
1619 if (put_user(encoder->base.id, encoder_id +
1627 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1628 if (put_user(mode_group->id_list[i],
1629 encoder_id + copied)) {
1638 card_res->count_encoders = encoder_count;
1641 if (card_res->count_connectors >= connector_count) {
1643 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1645 list_for_each_entry(connector,
1646 &dev->mode_config.connector_list,
1648 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1650 drm_get_connector_name(connector));
1651 if (put_user(connector->base.id,
1652 connector_id + copied)) {
1659 int start = mode_group->num_crtcs +
1660 mode_group->num_encoders;
1661 for (i = start; i < start + mode_group->num_connectors; i++) {
1662 if (put_user(mode_group->id_list[i],
1663 connector_id + copied)) {
1671 card_res->count_connectors = connector_count;
1673 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1674 card_res->count_connectors, card_res->count_encoders);
1677 drm_modeset_unlock_all(dev);
1682 * drm_mode_getcrtc - get CRTC configuration
1683 * @dev: drm device for the ioctl
1684 * @data: data pointer for the ioctl
1685 * @file_priv: drm file for the ioctl call
1687 * Construct a CRTC configuration structure to return to the user.
1689 * Called by the user via ioctl.
1692 * Zero on success, errno on failure.
1694 int drm_mode_getcrtc(struct drm_device *dev,
1695 void *data, struct drm_file *file_priv)
1697 struct drm_mode_crtc *crtc_resp = data;
1698 struct drm_crtc *crtc;
1699 struct drm_mode_object *obj;
1702 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1705 drm_modeset_lock_all(dev);
1707 obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1708 DRM_MODE_OBJECT_CRTC);
1713 crtc = obj_to_crtc(obj);
1715 crtc_resp->x = crtc->x;
1716 crtc_resp->y = crtc->y;
1717 crtc_resp->gamma_size = crtc->gamma_size;
1718 if (crtc->primary->fb)
1719 crtc_resp->fb_id = crtc->primary->fb->base.id;
1721 crtc_resp->fb_id = 0;
1723 if (crtc->enabled) {
1725 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1726 crtc_resp->mode_valid = 1;
1729 crtc_resp->mode_valid = 0;
1733 drm_modeset_unlock_all(dev);
1737 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1738 const struct drm_file *file_priv)
1741 * If user-space hasn't configured the driver to expose the stereo 3D
1742 * modes, don't expose them.
1744 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1751 * drm_mode_getconnector - get connector configuration
1752 * @dev: drm device for the ioctl
1753 * @data: data pointer for the ioctl
1754 * @file_priv: drm file for the ioctl call
1756 * Construct a connector configuration structure to return to the user.
1758 * Called by the user via ioctl.
1761 * Zero on success, errno on failure.
1763 int drm_mode_getconnector(struct drm_device *dev, void *data,
1764 struct drm_file *file_priv)
1766 struct drm_mode_get_connector *out_resp = data;
1767 struct drm_mode_object *obj;
1768 struct drm_connector *connector;
1769 struct drm_display_mode *mode;
1771 int props_count = 0;
1772 int encoders_count = 0;
1776 struct drm_mode_modeinfo u_mode;
1777 struct drm_mode_modeinfo __user *mode_ptr;
1778 uint32_t __user *prop_ptr;
1779 uint64_t __user *prop_values;
1780 uint32_t __user *encoder_ptr;
1782 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1785 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1787 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1789 mutex_lock(&dev->mode_config.mutex);
1791 obj = drm_mode_object_find(dev, out_resp->connector_id,
1792 DRM_MODE_OBJECT_CONNECTOR);
1797 connector = obj_to_connector(obj);
1799 props_count = connector->properties.count;
1801 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1802 if (connector->encoder_ids[i] != 0) {
1807 if (out_resp->count_modes == 0) {
1808 connector->funcs->fill_modes(connector,
1809 dev->mode_config.max_width,
1810 dev->mode_config.max_height);
1813 /* delayed so we get modes regardless of pre-fill_modes state */
1814 list_for_each_entry(mode, &connector->modes, head)
1815 if (drm_mode_expose_to_userspace(mode, file_priv))
1818 out_resp->connector_id = connector->base.id;
1819 out_resp->connector_type = connector->connector_type;
1820 out_resp->connector_type_id = connector->connector_type_id;
1821 out_resp->mm_width = connector->display_info.width_mm;
1822 out_resp->mm_height = connector->display_info.height_mm;
1823 out_resp->subpixel = connector->display_info.subpixel_order;
1824 out_resp->connection = connector->status;
1825 if (connector->encoder)
1826 out_resp->encoder_id = connector->encoder->base.id;
1828 out_resp->encoder_id = 0;
1831 * This ioctl is called twice, once to determine how much space is
1832 * needed, and the 2nd time to fill it.
1834 if ((out_resp->count_modes >= mode_count) && mode_count) {
1836 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
1837 list_for_each_entry(mode, &connector->modes, head) {
1838 if (!drm_mode_expose_to_userspace(mode, file_priv))
1841 drm_crtc_convert_to_umode(&u_mode, mode);
1842 if (copy_to_user(mode_ptr + copied,
1843 &u_mode, sizeof(u_mode))) {
1850 out_resp->count_modes = mode_count;
1852 if ((out_resp->count_props >= props_count) && props_count) {
1854 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
1855 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
1856 for (i = 0; i < connector->properties.count; i++) {
1857 if (put_user(connector->properties.ids[i],
1858 prop_ptr + copied)) {
1863 if (put_user(connector->properties.values[i],
1864 prop_values + copied)) {
1871 out_resp->count_props = props_count;
1873 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1875 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
1876 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1877 if (connector->encoder_ids[i] != 0) {
1878 if (put_user(connector->encoder_ids[i],
1879 encoder_ptr + copied)) {
1887 out_resp->count_encoders = encoders_count;
1890 mutex_unlock(&dev->mode_config.mutex);
1896 * drm_mode_getencoder - get encoder configuration
1897 * @dev: drm device for the ioctl
1898 * @data: data pointer for the ioctl
1899 * @file_priv: drm file for the ioctl call
1901 * Construct a encoder configuration structure to return to the user.
1903 * Called by the user via ioctl.
1906 * Zero on success, errno on failure.
1908 int drm_mode_getencoder(struct drm_device *dev, void *data,
1909 struct drm_file *file_priv)
1911 struct drm_mode_get_encoder *enc_resp = data;
1912 struct drm_mode_object *obj;
1913 struct drm_encoder *encoder;
1916 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1919 drm_modeset_lock_all(dev);
1920 obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1921 DRM_MODE_OBJECT_ENCODER);
1926 encoder = obj_to_encoder(obj);
1929 enc_resp->crtc_id = encoder->crtc->base.id;
1931 enc_resp->crtc_id = 0;
1932 enc_resp->encoder_type = encoder->encoder_type;
1933 enc_resp->encoder_id = encoder->base.id;
1934 enc_resp->possible_crtcs = encoder->possible_crtcs;
1935 enc_resp->possible_clones = encoder->possible_clones;
1938 drm_modeset_unlock_all(dev);
1943 * drm_mode_getplane_res - enumerate all plane resources
1946 * @file_priv: DRM file info
1948 * Construct a list of plane ids to return to the user.
1950 * Called by the user via ioctl.
1953 * Zero on success, errno on failure.
1955 int drm_mode_getplane_res(struct drm_device *dev, void *data,
1956 struct drm_file *file_priv)
1958 struct drm_mode_get_plane_res *plane_resp = data;
1959 struct drm_mode_config *config;
1960 struct drm_plane *plane;
1961 uint32_t __user *plane_ptr;
1962 int copied = 0, ret = 0;
1963 unsigned num_planes;
1965 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1968 drm_modeset_lock_all(dev);
1969 config = &dev->mode_config;
1971 if (file_priv->universal_planes)
1972 num_planes = config->num_total_plane;
1974 num_planes = config->num_overlay_plane;
1977 * This ioctl is called twice, once to determine how much space is
1978 * needed, and the 2nd time to fill it.
1981 (plane_resp->count_planes >= num_planes)) {
1982 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
1984 list_for_each_entry(plane, &config->plane_list, head) {
1986 * Unless userspace set the 'universal planes'
1987 * capability bit, only advertise overlays.
1989 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
1990 !file_priv->universal_planes)
1993 if (put_user(plane->base.id, plane_ptr + copied)) {
2000 plane_resp->count_planes = num_planes;
2003 drm_modeset_unlock_all(dev);
2008 * drm_mode_getplane - get plane configuration
2011 * @file_priv: DRM file info
2013 * Construct a plane configuration structure to return to the user.
2015 * Called by the user via ioctl.
2018 * Zero on success, errno on failure.
2020 int drm_mode_getplane(struct drm_device *dev, void *data,
2021 struct drm_file *file_priv)
2023 struct drm_mode_get_plane *plane_resp = data;
2024 struct drm_mode_object *obj;
2025 struct drm_plane *plane;
2026 uint32_t __user *format_ptr;
2029 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2032 drm_modeset_lock_all(dev);
2033 obj = drm_mode_object_find(dev, plane_resp->plane_id,
2034 DRM_MODE_OBJECT_PLANE);
2039 plane = obj_to_plane(obj);
2042 plane_resp->crtc_id = plane->crtc->base.id;
2044 plane_resp->crtc_id = 0;
2047 plane_resp->fb_id = plane->fb->base.id;
2049 plane_resp->fb_id = 0;
2051 plane_resp->plane_id = plane->base.id;
2052 plane_resp->possible_crtcs = plane->possible_crtcs;
2053 plane_resp->gamma_size = 0;
2056 * This ioctl is called twice, once to determine how much space is
2057 * needed, and the 2nd time to fill it.
2059 if (plane->format_count &&
2060 (plane_resp->count_format_types >= plane->format_count)) {
2061 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2062 if (copy_to_user(format_ptr,
2063 plane->format_types,
2064 sizeof(uint32_t) * plane->format_count)) {
2069 plane_resp->count_format_types = plane->format_count;
2072 drm_modeset_unlock_all(dev);
2077 * drm_mode_setplane - configure a plane's configuration
2079 * @data: ioctl data*
2080 * @file_priv: DRM file info
2082 * Set plane configuration, including placement, fb, scaling, and other factors.
2083 * Or pass a NULL fb to disable.
2086 * Zero on success, errno on failure.
2088 int drm_mode_setplane(struct drm_device *dev, void *data,
2089 struct drm_file *file_priv)
2091 struct drm_mode_set_plane *plane_req = data;
2092 struct drm_mode_object *obj;
2093 struct drm_plane *plane;
2094 struct drm_crtc *crtc;
2095 struct drm_framebuffer *fb = NULL, *old_fb = NULL;
2097 unsigned int fb_width, fb_height;
2100 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2104 * First, find the plane, crtc, and fb objects. If not available,
2105 * we don't bother to call the driver.
2107 obj = drm_mode_object_find(dev, plane_req->plane_id,
2108 DRM_MODE_OBJECT_PLANE);
2110 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2111 plane_req->plane_id);
2114 plane = obj_to_plane(obj);
2116 /* No fb means shut it down */
2117 if (!plane_req->fb_id) {
2118 drm_modeset_lock_all(dev);
2120 plane->funcs->disable_plane(plane);
2123 drm_modeset_unlock_all(dev);
2127 obj = drm_mode_object_find(dev, plane_req->crtc_id,
2128 DRM_MODE_OBJECT_CRTC);
2130 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2131 plane_req->crtc_id);
2135 crtc = obj_to_crtc(obj);
2137 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2139 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2145 /* Check whether this plane supports the fb pixel format. */
2146 for (i = 0; i < plane->format_count; i++)
2147 if (fb->pixel_format == plane->format_types[i])
2149 if (i == plane->format_count) {
2150 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2151 drm_get_format_name(fb->pixel_format));
2156 fb_width = fb->width << 16;
2157 fb_height = fb->height << 16;
2159 /* Make sure source coordinates are inside the fb. */
2160 if (plane_req->src_w > fb_width ||
2161 plane_req->src_x > fb_width - plane_req->src_w ||
2162 plane_req->src_h > fb_height ||
2163 plane_req->src_y > fb_height - plane_req->src_h) {
2164 DRM_DEBUG_KMS("Invalid source coordinates "
2165 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2166 plane_req->src_w >> 16,
2167 ((plane_req->src_w & 0xffff) * 15625) >> 10,
2168 plane_req->src_h >> 16,
2169 ((plane_req->src_h & 0xffff) * 15625) >> 10,
2170 plane_req->src_x >> 16,
2171 ((plane_req->src_x & 0xffff) * 15625) >> 10,
2172 plane_req->src_y >> 16,
2173 ((plane_req->src_y & 0xffff) * 15625) >> 10);
2178 /* Give drivers some help against integer overflows */
2179 if (plane_req->crtc_w > INT_MAX ||
2180 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2181 plane_req->crtc_h > INT_MAX ||
2182 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2183 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2184 plane_req->crtc_w, plane_req->crtc_h,
2185 plane_req->crtc_x, plane_req->crtc_y);
2190 drm_modeset_lock_all(dev);
2192 ret = plane->funcs->update_plane(plane, crtc, fb,
2193 plane_req->crtc_x, plane_req->crtc_y,
2194 plane_req->crtc_w, plane_req->crtc_h,
2195 plane_req->src_x, plane_req->src_y,
2196 plane_req->src_w, plane_req->src_h);
2204 drm_modeset_unlock_all(dev);
2208 drm_framebuffer_unreference(fb);
2210 drm_framebuffer_unreference(old_fb);
2216 * drm_mode_set_config_internal - helper to call ->set_config
2217 * @set: modeset config to set
2219 * This is a little helper to wrap internal calls to the ->set_config driver
2220 * interface. The only thing it adds is correct refcounting dance.
2223 * Zero on success, errno on failure.
2225 int drm_mode_set_config_internal(struct drm_mode_set *set)
2227 struct drm_crtc *crtc = set->crtc;
2228 struct drm_framebuffer *fb;
2229 struct drm_crtc *tmp;
2233 * NOTE: ->set_config can also disable other crtcs (if we steal all
2234 * connectors from it), hence we need to refcount the fbs across all
2235 * crtcs. Atomic modeset will have saner semantics ...
2237 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
2238 tmp->old_fb = tmp->primary->fb;
2242 ret = crtc->funcs->set_config(set);
2244 crtc->primary->crtc = crtc;
2245 crtc->primary->fb = fb;
2248 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
2249 if (tmp->primary->fb)
2250 drm_framebuffer_reference(tmp->primary->fb);
2252 drm_framebuffer_unreference(tmp->old_fb);
2257 EXPORT_SYMBOL(drm_mode_set_config_internal);
2260 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2262 * @crtc: CRTC that framebuffer will be displayed on
2265 * @mode: mode that framebuffer will be displayed under
2266 * @fb: framebuffer to check size of
2268 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2270 const struct drm_display_mode *mode,
2271 const struct drm_framebuffer *fb)
2274 int hdisplay, vdisplay;
2276 hdisplay = mode->hdisplay;
2277 vdisplay = mode->vdisplay;
2279 if (drm_mode_is_stereo(mode)) {
2280 struct drm_display_mode adjusted = *mode;
2282 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE);
2283 hdisplay = adjusted.crtc_hdisplay;
2284 vdisplay = adjusted.crtc_vdisplay;
2287 if (crtc->invert_dimensions)
2288 swap(hdisplay, vdisplay);
2290 if (hdisplay > fb->width ||
2291 vdisplay > fb->height ||
2292 x > fb->width - hdisplay ||
2293 y > fb->height - vdisplay) {
2294 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2295 fb->width, fb->height, hdisplay, vdisplay, x, y,
2296 crtc->invert_dimensions ? " (inverted)" : "");
2302 EXPORT_SYMBOL(drm_crtc_check_viewport);
2305 * drm_mode_setcrtc - set CRTC configuration
2306 * @dev: drm device for the ioctl
2307 * @data: data pointer for the ioctl
2308 * @file_priv: drm file for the ioctl call
2310 * Build a new CRTC configuration based on user request.
2312 * Called by the user via ioctl.
2315 * Zero on success, errno on failure.
2317 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2318 struct drm_file *file_priv)
2320 struct drm_mode_config *config = &dev->mode_config;
2321 struct drm_mode_crtc *crtc_req = data;
2322 struct drm_mode_object *obj;
2323 struct drm_crtc *crtc;
2324 struct drm_connector **connector_set = NULL, *connector;
2325 struct drm_framebuffer *fb = NULL;
2326 struct drm_display_mode *mode = NULL;
2327 struct drm_mode_set set;
2328 uint32_t __user *set_connectors_ptr;
2332 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2335 /* For some reason crtc x/y offsets are signed internally. */
2336 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2339 drm_modeset_lock_all(dev);
2340 obj = drm_mode_object_find(dev, crtc_req->crtc_id,
2341 DRM_MODE_OBJECT_CRTC);
2343 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2347 crtc = obj_to_crtc(obj);
2348 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2350 if (crtc_req->mode_valid) {
2351 /* If we have a mode we need a framebuffer. */
2352 /* If we pass -1, set the mode with the currently bound fb */
2353 if (crtc_req->fb_id == -1) {
2354 if (!crtc->primary->fb) {
2355 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2359 fb = crtc->primary->fb;
2360 /* Make refcounting symmetric with the lookup path. */
2361 drm_framebuffer_reference(fb);
2363 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2365 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2372 mode = drm_mode_create(dev);
2378 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2380 DRM_DEBUG_KMS("Invalid mode\n");
2384 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2386 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2393 if (crtc_req->count_connectors == 0 && mode) {
2394 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2399 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2400 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2401 crtc_req->count_connectors);
2406 if (crtc_req->count_connectors > 0) {
2409 /* Avoid unbounded kernel memory allocation */
2410 if (crtc_req->count_connectors > config->num_connector) {
2415 connector_set = kmalloc(crtc_req->count_connectors *
2416 sizeof(struct drm_connector *),
2418 if (!connector_set) {
2423 for (i = 0; i < crtc_req->count_connectors; i++) {
2424 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2425 if (get_user(out_id, &set_connectors_ptr[i])) {
2430 obj = drm_mode_object_find(dev, out_id,
2431 DRM_MODE_OBJECT_CONNECTOR);
2433 DRM_DEBUG_KMS("Connector id %d unknown\n",
2438 connector = obj_to_connector(obj);
2439 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2441 drm_get_connector_name(connector));
2443 connector_set[i] = connector;
2448 set.x = crtc_req->x;
2449 set.y = crtc_req->y;
2451 set.connectors = connector_set;
2452 set.num_connectors = crtc_req->count_connectors;
2454 ret = drm_mode_set_config_internal(&set);
2458 drm_framebuffer_unreference(fb);
2460 kfree(connector_set);
2461 drm_mode_destroy(dev, mode);
2462 drm_modeset_unlock_all(dev);
2466 static int drm_mode_cursor_common(struct drm_device *dev,
2467 struct drm_mode_cursor2 *req,
2468 struct drm_file *file_priv)
2470 struct drm_mode_object *obj;
2471 struct drm_crtc *crtc;
2474 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2477 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2480 obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
2482 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2485 crtc = obj_to_crtc(obj);
2487 mutex_lock(&crtc->mutex);
2488 if (req->flags & DRM_MODE_CURSOR_BO) {
2489 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
2493 /* Turns off the cursor if handle is 0 */
2494 if (crtc->funcs->cursor_set2)
2495 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2496 req->width, req->height, req->hot_x, req->hot_y);
2498 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2499 req->width, req->height);
2502 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2503 if (crtc->funcs->cursor_move) {
2504 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2511 mutex_unlock(&crtc->mutex);
2519 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2520 * @dev: drm device for the ioctl
2521 * @data: data pointer for the ioctl
2522 * @file_priv: drm file for the ioctl call
2524 * Set the cursor configuration based on user request.
2526 * Called by the user via ioctl.
2529 * Zero on success, errno on failure.
2531 int drm_mode_cursor_ioctl(struct drm_device *dev,
2532 void *data, struct drm_file *file_priv)
2534 struct drm_mode_cursor *req = data;
2535 struct drm_mode_cursor2 new_req;
2537 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2538 new_req.hot_x = new_req.hot_y = 0;
2540 return drm_mode_cursor_common(dev, &new_req, file_priv);
2544 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2545 * @dev: drm device for the ioctl
2546 * @data: data pointer for the ioctl
2547 * @file_priv: drm file for the ioctl call
2549 * Set the cursor configuration based on user request. This implements the 2nd
2550 * version of the cursor ioctl, which allows userspace to additionally specify
2551 * the hotspot of the pointer.
2553 * Called by the user via ioctl.
2556 * Zero on success, errno on failure.
2558 int drm_mode_cursor2_ioctl(struct drm_device *dev,
2559 void *data, struct drm_file *file_priv)
2561 struct drm_mode_cursor2 *req = data;
2562 return drm_mode_cursor_common(dev, req, file_priv);
2566 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2567 * @bpp: bits per pixels
2568 * @depth: bit depth per pixel
2570 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2571 * Useful in fbdev emulation code, since that deals in those values.
2573 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2579 fmt = DRM_FORMAT_C8;
2583 fmt = DRM_FORMAT_XRGB1555;
2585 fmt = DRM_FORMAT_RGB565;
2588 fmt = DRM_FORMAT_RGB888;
2592 fmt = DRM_FORMAT_XRGB8888;
2593 else if (depth == 30)
2594 fmt = DRM_FORMAT_XRGB2101010;
2596 fmt = DRM_FORMAT_ARGB8888;
2599 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2600 fmt = DRM_FORMAT_XRGB8888;
2606 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
2609 * drm_mode_addfb - add an FB to the graphics configuration
2610 * @dev: drm device for the ioctl
2611 * @data: data pointer for the ioctl
2612 * @file_priv: drm file for the ioctl call
2614 * Add a new FB to the specified CRTC, given a user request. This is the
2615 * original addfb ioclt which only supported RGB formats.
2617 * Called by the user via ioctl.
2620 * Zero on success, errno on failure.
2622 int drm_mode_addfb(struct drm_device *dev,
2623 void *data, struct drm_file *file_priv)
2625 struct drm_mode_fb_cmd *or = data;
2626 struct drm_mode_fb_cmd2 r = {};
2627 struct drm_mode_config *config = &dev->mode_config;
2628 struct drm_framebuffer *fb;
2631 /* Use new struct with format internally */
2632 r.fb_id = or->fb_id;
2633 r.width = or->width;
2634 r.height = or->height;
2635 r.pitches[0] = or->pitch;
2636 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
2637 r.handles[0] = or->handle;
2639 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2642 if ((config->min_width > r.width) || (r.width > config->max_width))
2645 if ((config->min_height > r.height) || (r.height > config->max_height))
2648 fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r);
2650 DRM_DEBUG_KMS("could not create framebuffer\n");
2654 mutex_lock(&file_priv->fbs_lock);
2655 or->fb_id = fb->base.id;
2656 list_add(&fb->filp_head, &file_priv->fbs);
2657 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2658 mutex_unlock(&file_priv->fbs_lock);
2663 static int format_check(const struct drm_mode_fb_cmd2 *r)
2665 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
2669 case DRM_FORMAT_RGB332:
2670 case DRM_FORMAT_BGR233:
2671 case DRM_FORMAT_XRGB4444:
2672 case DRM_FORMAT_XBGR4444:
2673 case DRM_FORMAT_RGBX4444:
2674 case DRM_FORMAT_BGRX4444:
2675 case DRM_FORMAT_ARGB4444:
2676 case DRM_FORMAT_ABGR4444:
2677 case DRM_FORMAT_RGBA4444:
2678 case DRM_FORMAT_BGRA4444:
2679 case DRM_FORMAT_XRGB1555:
2680 case DRM_FORMAT_XBGR1555:
2681 case DRM_FORMAT_RGBX5551:
2682 case DRM_FORMAT_BGRX5551:
2683 case DRM_FORMAT_ARGB1555:
2684 case DRM_FORMAT_ABGR1555:
2685 case DRM_FORMAT_RGBA5551:
2686 case DRM_FORMAT_BGRA5551:
2687 case DRM_FORMAT_RGB565:
2688 case DRM_FORMAT_BGR565:
2689 case DRM_FORMAT_RGB888:
2690 case DRM_FORMAT_BGR888:
2691 case DRM_FORMAT_XRGB8888:
2692 case DRM_FORMAT_XBGR8888:
2693 case DRM_FORMAT_RGBX8888:
2694 case DRM_FORMAT_BGRX8888:
2695 case DRM_FORMAT_ARGB8888:
2696 case DRM_FORMAT_ABGR8888:
2697 case DRM_FORMAT_RGBA8888:
2698 case DRM_FORMAT_BGRA8888:
2699 case DRM_FORMAT_XRGB2101010:
2700 case DRM_FORMAT_XBGR2101010:
2701 case DRM_FORMAT_RGBX1010102:
2702 case DRM_FORMAT_BGRX1010102:
2703 case DRM_FORMAT_ARGB2101010:
2704 case DRM_FORMAT_ABGR2101010:
2705 case DRM_FORMAT_RGBA1010102:
2706 case DRM_FORMAT_BGRA1010102:
2707 case DRM_FORMAT_YUYV:
2708 case DRM_FORMAT_YVYU:
2709 case DRM_FORMAT_UYVY:
2710 case DRM_FORMAT_VYUY:
2711 case DRM_FORMAT_AYUV:
2712 case DRM_FORMAT_NV12:
2713 case DRM_FORMAT_NV21:
2714 case DRM_FORMAT_NV16:
2715 case DRM_FORMAT_NV61:
2716 case DRM_FORMAT_NV24:
2717 case DRM_FORMAT_NV42:
2718 case DRM_FORMAT_YUV410:
2719 case DRM_FORMAT_YVU410:
2720 case DRM_FORMAT_YUV411:
2721 case DRM_FORMAT_YVU411:
2722 case DRM_FORMAT_YUV420:
2723 case DRM_FORMAT_YVU420:
2724 case DRM_FORMAT_YUV422:
2725 case DRM_FORMAT_YVU422:
2726 case DRM_FORMAT_YUV444:
2727 case DRM_FORMAT_YVU444:
2730 DRM_DEBUG_KMS("invalid pixel format %s\n",
2731 drm_get_format_name(r->pixel_format));
2736 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
2738 int ret, hsub, vsub, num_planes, i;
2740 ret = format_check(r);
2742 DRM_DEBUG_KMS("bad framebuffer format %s\n",
2743 drm_get_format_name(r->pixel_format));
2747 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
2748 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
2749 num_planes = drm_format_num_planes(r->pixel_format);
2751 if (r->width == 0 || r->width % hsub) {
2752 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->height);
2756 if (r->height == 0 || r->height % vsub) {
2757 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
2761 for (i = 0; i < num_planes; i++) {
2762 unsigned int width = r->width / (i != 0 ? hsub : 1);
2763 unsigned int height = r->height / (i != 0 ? vsub : 1);
2764 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
2766 if (!r->handles[i]) {
2767 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
2771 if ((uint64_t) width * cpp > UINT_MAX)
2774 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
2777 if (r->pitches[i] < width * cpp) {
2778 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
2787 * drm_mode_addfb2 - add an FB to the graphics configuration
2788 * @dev: drm device for the ioctl
2789 * @data: data pointer for the ioctl
2790 * @file_priv: drm file for the ioctl call
2792 * Add a new FB to the specified CRTC, given a user request with format. This is
2793 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
2794 * and uses fourcc codes as pixel format specifiers.
2796 * Called by the user via ioctl.
2799 * Zero on success, errno on failure.
2801 int drm_mode_addfb2(struct drm_device *dev,
2802 void *data, struct drm_file *file_priv)
2804 struct drm_mode_fb_cmd2 *r = data;
2805 struct drm_mode_config *config = &dev->mode_config;
2806 struct drm_framebuffer *fb;
2809 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2812 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
2813 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
2817 if ((config->min_width > r->width) || (r->width > config->max_width)) {
2818 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
2819 r->width, config->min_width, config->max_width);
2822 if ((config->min_height > r->height) || (r->height > config->max_height)) {
2823 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
2824 r->height, config->min_height, config->max_height);
2828 ret = framebuffer_check(r);
2832 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
2834 DRM_DEBUG_KMS("could not create framebuffer\n");
2838 mutex_lock(&file_priv->fbs_lock);
2839 r->fb_id = fb->base.id;
2840 list_add(&fb->filp_head, &file_priv->fbs);
2841 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2842 mutex_unlock(&file_priv->fbs_lock);
2849 * drm_mode_rmfb - remove an FB from the configuration
2850 * @dev: drm device for the ioctl
2851 * @data: data pointer for the ioctl
2852 * @file_priv: drm file for the ioctl call
2854 * Remove the FB specified by the user.
2856 * Called by the user via ioctl.
2859 * Zero on success, errno on failure.
2861 int drm_mode_rmfb(struct drm_device *dev,
2862 void *data, struct drm_file *file_priv)
2864 struct drm_framebuffer *fb = NULL;
2865 struct drm_framebuffer *fbl = NULL;
2866 uint32_t *id = data;
2869 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2872 mutex_lock(&file_priv->fbs_lock);
2873 mutex_lock(&dev->mode_config.fb_lock);
2874 fb = __drm_framebuffer_lookup(dev, *id);
2878 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
2884 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
2885 __drm_framebuffer_unregister(dev, fb);
2887 list_del_init(&fb->filp_head);
2888 mutex_unlock(&dev->mode_config.fb_lock);
2889 mutex_unlock(&file_priv->fbs_lock);
2891 drm_framebuffer_remove(fb);
2896 mutex_unlock(&dev->mode_config.fb_lock);
2897 mutex_unlock(&file_priv->fbs_lock);
2903 * drm_mode_getfb - get FB info
2904 * @dev: drm device for the ioctl
2905 * @data: data pointer for the ioctl
2906 * @file_priv: drm file for the ioctl call
2908 * Lookup the FB given its ID and return info about it.
2910 * Called by the user via ioctl.
2913 * Zero on success, errno on failure.
2915 int drm_mode_getfb(struct drm_device *dev,
2916 void *data, struct drm_file *file_priv)
2918 struct drm_mode_fb_cmd *r = data;
2919 struct drm_framebuffer *fb;
2922 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2925 fb = drm_framebuffer_lookup(dev, r->fb_id);
2929 r->height = fb->height;
2930 r->width = fb->width;
2931 r->depth = fb->depth;
2932 r->bpp = fb->bits_per_pixel;
2933 r->pitch = fb->pitches[0];
2934 if (fb->funcs->create_handle) {
2935 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
2936 drm_is_control_client(file_priv)) {
2937 ret = fb->funcs->create_handle(fb, file_priv,
2940 /* GET_FB() is an unprivileged ioctl so we must not
2941 * return a buffer-handle to non-master processes! For
2942 * backwards-compatibility reasons, we cannot make
2943 * GET_FB() privileged, so just return an invalid handle
2944 * for non-masters. */
2952 drm_framebuffer_unreference(fb);
2958 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
2959 * @dev: drm device for the ioctl
2960 * @data: data pointer for the ioctl
2961 * @file_priv: drm file for the ioctl call
2963 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
2964 * rectangle list. Generic userspace which does frontbuffer rendering must call
2965 * this ioctl to flush out the changes on manual-update display outputs, e.g.
2966 * usb display-link, mipi manual update panels or edp panel self refresh modes.
2968 * Modesetting drivers which always update the frontbuffer do not need to
2969 * implement the corresponding ->dirty framebuffer callback.
2971 * Called by the user via ioctl.
2974 * Zero on success, errno on failure.
2976 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
2977 void *data, struct drm_file *file_priv)
2979 struct drm_clip_rect __user *clips_ptr;
2980 struct drm_clip_rect *clips = NULL;
2981 struct drm_mode_fb_dirty_cmd *r = data;
2982 struct drm_framebuffer *fb;
2987 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2990 fb = drm_framebuffer_lookup(dev, r->fb_id);
2994 num_clips = r->num_clips;
2995 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
2997 if (!num_clips != !clips_ptr) {
3002 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3004 /* If userspace annotates copy, clips must come in pairs */
3005 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3010 if (num_clips && clips_ptr) {
3011 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3015 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
3021 ret = copy_from_user(clips, clips_ptr,
3022 num_clips * sizeof(*clips));
3029 if (fb->funcs->dirty) {
3030 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3039 drm_framebuffer_unreference(fb);
3046 * drm_fb_release - remove and free the FBs on this file
3047 * @priv: drm file for the ioctl
3049 * Destroy all the FBs associated with @filp.
3051 * Called by the user via ioctl.
3054 * Zero on success, errno on failure.
3056 void drm_fb_release(struct drm_file *priv)
3058 struct drm_device *dev = priv->minor->dev;
3059 struct drm_framebuffer *fb, *tfb;
3061 mutex_lock(&priv->fbs_lock);
3062 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3064 mutex_lock(&dev->mode_config.fb_lock);
3065 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3066 __drm_framebuffer_unregister(dev, fb);
3067 mutex_unlock(&dev->mode_config.fb_lock);
3069 list_del_init(&fb->filp_head);
3071 /* This will also drop the fpriv->fbs reference. */
3072 drm_framebuffer_remove(fb);
3074 mutex_unlock(&priv->fbs_lock);
3078 * drm_property_create - create a new property type
3080 * @flags: flags specifying the property type
3081 * @name: name of the property
3082 * @num_values: number of pre-defined values
3084 * This creates a new generic drm property which can then be attached to a drm
3085 * object with drm_object_attach_property. The returned property object must be
3086 * freed with drm_property_destroy.
3089 * A pointer to the newly created property on success, NULL on failure.
3091 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3092 const char *name, int num_values)
3094 struct drm_property *property = NULL;
3097 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3102 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
3103 if (!property->values)
3107 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3111 property->flags = flags;
3112 property->num_values = num_values;
3113 INIT_LIST_HEAD(&property->enum_blob_list);
3116 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3117 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3120 list_add_tail(&property->head, &dev->mode_config.property_list);
3123 kfree(property->values);
3127 EXPORT_SYMBOL(drm_property_create);
3130 * drm_property_create - create a new enumeration property type
3132 * @flags: flags specifying the property type
3133 * @name: name of the property
3134 * @props: enumeration lists with property values
3135 * @num_values: number of pre-defined values
3137 * This creates a new generic drm property which can then be attached to a drm
3138 * object with drm_object_attach_property. The returned property object must be
3139 * freed with drm_property_destroy.
3141 * Userspace is only allowed to set one of the predefined values for enumeration
3145 * A pointer to the newly created property on success, NULL on failure.
3147 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3149 const struct drm_prop_enum_list *props,
3152 struct drm_property *property;
3155 flags |= DRM_MODE_PROP_ENUM;
3157 property = drm_property_create(dev, flags, name, num_values);
3161 for (i = 0; i < num_values; i++) {
3162 ret = drm_property_add_enum(property, i,
3166 drm_property_destroy(dev, property);
3173 EXPORT_SYMBOL(drm_property_create_enum);
3176 * drm_property_create - create a new bitmask property type
3178 * @flags: flags specifying the property type
3179 * @name: name of the property
3180 * @props: enumeration lists with property bitflags
3181 * @num_values: number of pre-defined values
3183 * This creates a new generic drm property which can then be attached to a drm
3184 * object with drm_object_attach_property. The returned property object must be
3185 * freed with drm_property_destroy.
3187 * Compared to plain enumeration properties userspace is allowed to set any
3188 * or'ed together combination of the predefined property bitflag values
3191 * A pointer to the newly created property on success, NULL on failure.
3193 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3194 int flags, const char *name,
3195 const struct drm_prop_enum_list *props,
3198 struct drm_property *property;
3201 flags |= DRM_MODE_PROP_BITMASK;
3203 property = drm_property_create(dev, flags, name, num_values);
3207 for (i = 0; i < num_values; i++) {
3208 ret = drm_property_add_enum(property, i,
3212 drm_property_destroy(dev, property);
3219 EXPORT_SYMBOL(drm_property_create_bitmask);
3222 * drm_property_create - create a new ranged property type
3224 * @flags: flags specifying the property type
3225 * @name: name of the property
3226 * @min: minimum value of the property
3227 * @max: maximum value of the property
3229 * This creates a new generic drm property which can then be attached to a drm
3230 * object with drm_object_attach_property. The returned property object must be
3231 * freed with drm_property_destroy.
3233 * Userspace is allowed to set any interger value in the (min, max) range
3237 * A pointer to the newly created property on success, NULL on failure.
3239 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3241 uint64_t min, uint64_t max)
3243 struct drm_property *property;
3245 flags |= DRM_MODE_PROP_RANGE;
3247 property = drm_property_create(dev, flags, name, 2);
3251 property->values[0] = min;
3252 property->values[1] = max;
3256 EXPORT_SYMBOL(drm_property_create_range);
3259 * drm_property_add_enum - add a possible value to an enumeration property
3260 * @property: enumeration property to change
3261 * @index: index of the new enumeration
3262 * @value: value of the new enumeration
3263 * @name: symbolic name of the new enumeration
3265 * This functions adds enumerations to a property.
3267 * It's use is deprecated, drivers should use one of the more specific helpers
3268 * to directly create the property with all enumerations already attached.
3271 * Zero on success, error code on failure.
3273 int drm_property_add_enum(struct drm_property *property, int index,
3274 uint64_t value, const char *name)
3276 struct drm_property_enum *prop_enum;
3278 if (!(property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)))
3282 * Bitmask enum properties have the additional constraint of values
3285 if ((property->flags & DRM_MODE_PROP_BITMASK) && (value > 63))
3288 if (!list_empty(&property->enum_blob_list)) {
3289 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3290 if (prop_enum->value == value) {
3291 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3292 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3298 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3302 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3303 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3304 prop_enum->value = value;
3306 property->values[index] = value;
3307 list_add_tail(&prop_enum->head, &property->enum_blob_list);
3310 EXPORT_SYMBOL(drm_property_add_enum);
3313 * drm_property_destroy - destroy a drm property
3315 * @property: property to destry
3317 * This function frees a property including any attached resources like
3318 * enumeration values.
3320 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3322 struct drm_property_enum *prop_enum, *pt;
3324 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
3325 list_del(&prop_enum->head);
3329 if (property->num_values)
3330 kfree(property->values);
3331 drm_mode_object_put(dev, &property->base);
3332 list_del(&property->head);
3335 EXPORT_SYMBOL(drm_property_destroy);
3338 * drm_object_attach_property - attach a property to a modeset object
3339 * @obj: drm modeset object
3340 * @property: property to attach
3341 * @init_val: initial value of the property
3343 * This attaches the given property to the modeset object with the given initial
3344 * value. Currently this function cannot fail since the properties are stored in
3345 * a statically sized array.
3347 void drm_object_attach_property(struct drm_mode_object *obj,
3348 struct drm_property *property,
3351 int count = obj->properties->count;
3353 if (count == DRM_OBJECT_MAX_PROPERTY) {
3354 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3355 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3356 "you see this message on the same object type.\n",
3361 obj->properties->ids[count] = property->base.id;
3362 obj->properties->values[count] = init_val;
3363 obj->properties->count++;
3365 EXPORT_SYMBOL(drm_object_attach_property);
3368 * drm_object_property_set_value - set the value of a property
3369 * @obj: drm mode object to set property value for
3370 * @property: property to set
3371 * @val: value the property should be set to
3373 * This functions sets a given property on a given object. This function only
3374 * changes the software state of the property, it does not call into the
3375 * driver's ->set_property callback.
3378 * Zero on success, error code on failure.
3380 int drm_object_property_set_value(struct drm_mode_object *obj,
3381 struct drm_property *property, uint64_t val)
3385 for (i = 0; i < obj->properties->count; i++) {
3386 if (obj->properties->ids[i] == property->base.id) {
3387 obj->properties->values[i] = val;
3394 EXPORT_SYMBOL(drm_object_property_set_value);
3397 * drm_object_property_get_value - retrieve the value of a property
3398 * @obj: drm mode object to get property value from
3399 * @property: property to retrieve
3400 * @val: storage for the property value
3402 * This function retrieves the softare state of the given property for the given
3403 * property. Since there is no driver callback to retrieve the current property
3404 * value this might be out of sync with the hardware, depending upon the driver
3408 * Zero on success, error code on failure.
3410 int drm_object_property_get_value(struct drm_mode_object *obj,
3411 struct drm_property *property, uint64_t *val)
3415 for (i = 0; i < obj->properties->count; i++) {
3416 if (obj->properties->ids[i] == property->base.id) {
3417 *val = obj->properties->values[i];
3424 EXPORT_SYMBOL(drm_object_property_get_value);
3427 * drm_mode_getproperty_ioctl - get the current value of a connector's property
3430 * @file_priv: DRM file info
3432 * This function retrieves the current value for an connectors's property.
3434 * Called by the user via ioctl.
3437 * Zero on success, errno on failure.
3439 int drm_mode_getproperty_ioctl(struct drm_device *dev,
3440 void *data, struct drm_file *file_priv)
3442 struct drm_mode_object *obj;
3443 struct drm_mode_get_property *out_resp = data;
3444 struct drm_property *property;
3447 int value_count = 0;
3450 struct drm_property_enum *prop_enum;
3451 struct drm_mode_property_enum __user *enum_ptr;
3452 struct drm_property_blob *prop_blob;
3453 uint32_t __user *blob_id_ptr;
3454 uint64_t __user *values_ptr;
3455 uint32_t __user *blob_length_ptr;
3457 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3460 drm_modeset_lock_all(dev);
3461 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
3466 property = obj_to_property(obj);
3468 if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) {
3469 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
3471 } else if (property->flags & DRM_MODE_PROP_BLOB) {
3472 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
3476 value_count = property->num_values;
3478 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
3479 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
3480 out_resp->flags = property->flags;
3482 if ((out_resp->count_values >= value_count) && value_count) {
3483 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
3484 for (i = 0; i < value_count; i++) {
3485 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
3491 out_resp->count_values = value_count;
3493 if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) {
3494 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
3496 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3497 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3499 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
3504 if (copy_to_user(&enum_ptr[copied].name,
3505 &prop_enum->name, DRM_PROP_NAME_LEN)) {
3512 out_resp->count_enum_blobs = enum_count;
3515 if (property->flags & DRM_MODE_PROP_BLOB) {
3516 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
3518 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr;
3519 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr;
3521 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
3522 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
3527 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
3535 out_resp->count_enum_blobs = blob_count;
3538 drm_modeset_unlock_all(dev);
3542 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
3545 struct drm_property_blob *blob;
3548 if (!length || !data)
3551 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
3555 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
3561 blob->length = length;
3563 memcpy(blob->data, data, length);
3565 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
3569 static void drm_property_destroy_blob(struct drm_device *dev,
3570 struct drm_property_blob *blob)
3572 drm_mode_object_put(dev, &blob->base);
3573 list_del(&blob->head);
3578 * drm_mode_getblob_ioctl - get the contents of a blob property value
3581 * @file_priv: DRM file info
3583 * This function retrieves the contents of a blob property. The value stored in
3584 * an object's blob property is just a normal modeset object id.
3586 * Called by the user via ioctl.
3589 * Zero on success, errno on failure.
3591 int drm_mode_getblob_ioctl(struct drm_device *dev,
3592 void *data, struct drm_file *file_priv)
3594 struct drm_mode_object *obj;
3595 struct drm_mode_get_blob *out_resp = data;
3596 struct drm_property_blob *blob;
3598 void __user *blob_ptr;
3600 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3603 drm_modeset_lock_all(dev);
3604 obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
3609 blob = obj_to_blob(obj);
3611 if (out_resp->length == blob->length) {
3612 blob_ptr = (void __user *)(unsigned long)out_resp->data;
3613 if (copy_to_user(blob_ptr, blob->data, blob->length)){
3618 out_resp->length = blob->length;
3621 drm_modeset_unlock_all(dev);
3626 * drm_mode_connector_update_edid_property - update the edid property of a connector
3627 * @connector: drm connector
3628 * @edid: new value of the edid property
3630 * This function creates a new blob modeset object and assigns its id to the
3631 * connector's edid property.
3634 * Zero on success, errno on failure.
3636 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
3639 struct drm_device *dev = connector->dev;
3642 if (connector->edid_blob_ptr)
3643 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
3645 /* Delete edid, when there is none. */
3647 connector->edid_blob_ptr = NULL;
3648 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
3652 size = EDID_LENGTH * (1 + edid->extensions);
3653 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
3655 if (!connector->edid_blob_ptr)
3658 ret = drm_object_property_set_value(&connector->base,
3659 dev->mode_config.edid_property,
3660 connector->edid_blob_ptr->base.id);
3664 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
3666 static bool drm_property_change_is_valid(struct drm_property *property,
3669 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
3671 if (property->flags & DRM_MODE_PROP_RANGE) {
3672 if (value < property->values[0] || value > property->values[1])
3675 } else if (property->flags & DRM_MODE_PROP_BITMASK) {
3677 uint64_t valid_mask = 0;
3678 for (i = 0; i < property->num_values; i++)
3679 valid_mask |= (1ULL << property->values[i]);
3680 return !(value & ~valid_mask);
3681 } else if (property->flags & DRM_MODE_PROP_BLOB) {
3682 /* Only the driver knows */
3686 for (i = 0; i < property->num_values; i++)
3687 if (property->values[i] == value)
3694 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
3697 * @file_priv: DRM file info
3699 * This function sets the current value for a connectors's property. It also
3700 * calls into a driver's ->set_property callback to update the hardware state
3702 * Called by the user via ioctl.
3705 * Zero on success, errno on failure.
3707 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
3708 void *data, struct drm_file *file_priv)
3710 struct drm_mode_connector_set_property *conn_set_prop = data;
3711 struct drm_mode_obj_set_property obj_set_prop = {
3712 .value = conn_set_prop->value,
3713 .prop_id = conn_set_prop->prop_id,
3714 .obj_id = conn_set_prop->connector_id,
3715 .obj_type = DRM_MODE_OBJECT_CONNECTOR
3718 /* It does all the locking and checking we need */
3719 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
3722 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
3723 struct drm_property *property,
3727 struct drm_connector *connector = obj_to_connector(obj);
3729 /* Do DPMS ourselves */
3730 if (property == connector->dev->mode_config.dpms_property) {
3731 if (connector->funcs->dpms)
3732 (*connector->funcs->dpms)(connector, (int)value);
3734 } else if (connector->funcs->set_property)
3735 ret = connector->funcs->set_property(connector, property, value);
3737 /* store the property value if successful */
3739 drm_object_property_set_value(&connector->base, property, value);
3743 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
3744 struct drm_property *property,
3748 struct drm_crtc *crtc = obj_to_crtc(obj);
3750 if (crtc->funcs->set_property)
3751 ret = crtc->funcs->set_property(crtc, property, value);
3753 drm_object_property_set_value(obj, property, value);
3758 static int drm_mode_plane_set_obj_prop(struct drm_mode_object *obj,
3759 struct drm_property *property,
3763 struct drm_plane *plane = obj_to_plane(obj);
3765 if (plane->funcs->set_property)
3766 ret = plane->funcs->set_property(plane, property, value);
3768 drm_object_property_set_value(obj, property, value);
3774 * drm_mode_getproperty_ioctl - get the current value of a object's property
3777 * @file_priv: DRM file info
3779 * This function retrieves the current value for an object's property. Compared
3780 * to the connector specific ioctl this one is extended to also work on crtc and
3783 * Called by the user via ioctl.
3786 * Zero on success, errno on failure.
3788 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
3789 struct drm_file *file_priv)
3791 struct drm_mode_obj_get_properties *arg = data;
3792 struct drm_mode_object *obj;
3796 int props_count = 0;
3797 uint32_t __user *props_ptr;
3798 uint64_t __user *prop_values_ptr;
3800 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3803 drm_modeset_lock_all(dev);
3805 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
3810 if (!obj->properties) {
3815 props_count = obj->properties->count;
3817 /* This ioctl is called twice, once to determine how much space is
3818 * needed, and the 2nd time to fill it. */
3819 if ((arg->count_props >= props_count) && props_count) {
3821 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
3822 prop_values_ptr = (uint64_t __user *)(unsigned long)
3823 (arg->prop_values_ptr);
3824 for (i = 0; i < props_count; i++) {
3825 if (put_user(obj->properties->ids[i],
3826 props_ptr + copied)) {
3830 if (put_user(obj->properties->values[i],
3831 prop_values_ptr + copied)) {
3838 arg->count_props = props_count;
3840 drm_modeset_unlock_all(dev);
3845 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
3848 * @file_priv: DRM file info
3850 * This function sets the current value for an object's property. It also calls
3851 * into a driver's ->set_property callback to update the hardware state.
3852 * Compared to the connector specific ioctl this one is extended to also work on
3853 * crtc and plane objects.
3855 * Called by the user via ioctl.
3858 * Zero on success, errno on failure.
3860 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
3861 struct drm_file *file_priv)
3863 struct drm_mode_obj_set_property *arg = data;
3864 struct drm_mode_object *arg_obj;
3865 struct drm_mode_object *prop_obj;
3866 struct drm_property *property;
3870 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3873 drm_modeset_lock_all(dev);
3875 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
3880 if (!arg_obj->properties)
3883 for (i = 0; i < arg_obj->properties->count; i++)
3884 if (arg_obj->properties->ids[i] == arg->prop_id)
3887 if (i == arg_obj->properties->count)
3890 prop_obj = drm_mode_object_find(dev, arg->prop_id,
3891 DRM_MODE_OBJECT_PROPERTY);
3896 property = obj_to_property(prop_obj);
3898 if (!drm_property_change_is_valid(property, arg->value))
3901 switch (arg_obj->type) {
3902 case DRM_MODE_OBJECT_CONNECTOR:
3903 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
3906 case DRM_MODE_OBJECT_CRTC:
3907 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
3909 case DRM_MODE_OBJECT_PLANE:
3910 ret = drm_mode_plane_set_obj_prop(arg_obj, property, arg->value);
3915 drm_modeset_unlock_all(dev);
3920 * drm_mode_connector_attach_encoder - attach a connector to an encoder
3921 * @connector: connector to attach
3922 * @encoder: encoder to attach @connector to
3924 * This function links up a connector to an encoder. Note that the routing
3925 * restrictions between encoders and crtcs are exposed to userspace through the
3926 * possible_clones and possible_crtcs bitmasks.
3929 * Zero on success, errno on failure.
3931 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
3932 struct drm_encoder *encoder)
3936 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
3937 if (connector->encoder_ids[i] == 0) {
3938 connector->encoder_ids[i] = encoder->base.id;
3944 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
3947 * drm_mode_crtc_set_gamma_size - set the gamma table size
3948 * @crtc: CRTC to set the gamma table size for
3949 * @gamma_size: size of the gamma table
3951 * Drivers which support gamma tables should set this to the supported gamma
3952 * table size when initializing the CRTC. Currently the drm core only supports a
3953 * fixed gamma table size.
3956 * Zero on success, errno on failure.
3958 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
3961 crtc->gamma_size = gamma_size;
3963 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
3964 if (!crtc->gamma_store) {
3965 crtc->gamma_size = 0;
3971 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
3974 * drm_mode_gamma_set_ioctl - set the gamma table
3977 * @file_priv: DRM file info
3979 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
3980 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
3982 * Called by the user via ioctl.
3985 * Zero on success, errno on failure.
3987 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
3988 void *data, struct drm_file *file_priv)
3990 struct drm_mode_crtc_lut *crtc_lut = data;
3991 struct drm_mode_object *obj;
3992 struct drm_crtc *crtc;
3993 void *r_base, *g_base, *b_base;
3997 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4000 drm_modeset_lock_all(dev);
4001 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
4006 crtc = obj_to_crtc(obj);
4008 if (crtc->funcs->gamma_set == NULL) {
4013 /* memcpy into gamma store */
4014 if (crtc_lut->gamma_size != crtc->gamma_size) {
4019 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4020 r_base = crtc->gamma_store;
4021 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4026 g_base = r_base + size;
4027 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4032 b_base = g_base + size;
4033 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4038 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
4041 drm_modeset_unlock_all(dev);
4047 * drm_mode_gamma_get_ioctl - get the gamma table
4050 * @file_priv: DRM file info
4052 * Copy the current gamma table into the storage provided. This also provides
4053 * the gamma table size the driver expects, which can be used to size the
4054 * allocated storage.
4056 * Called by the user via ioctl.
4059 * Zero on success, errno on failure.
4061 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4062 void *data, struct drm_file *file_priv)
4064 struct drm_mode_crtc_lut *crtc_lut = data;
4065 struct drm_mode_object *obj;
4066 struct drm_crtc *crtc;
4067 void *r_base, *g_base, *b_base;
4071 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4074 drm_modeset_lock_all(dev);
4075 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
4080 crtc = obj_to_crtc(obj);
4082 /* memcpy into gamma store */
4083 if (crtc_lut->gamma_size != crtc->gamma_size) {
4088 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4089 r_base = crtc->gamma_store;
4090 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4095 g_base = r_base + size;
4096 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4101 b_base = g_base + size;
4102 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4107 drm_modeset_unlock_all(dev);
4112 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4115 * @file_priv: DRM file info
4117 * This schedules an asynchronous update on a given CRTC, called page flip.
4118 * Optionally a drm event is generated to signal the completion of the event.
4119 * Generic drivers cannot assume that a pageflip with changed framebuffer
4120 * properties (including driver specific metadata like tiling layout) will work,
4121 * but some drivers support e.g. pixel format changes through the pageflip
4124 * Called by the user via ioctl.
4127 * Zero on success, errno on failure.
4129 int drm_mode_page_flip_ioctl(struct drm_device *dev,
4130 void *data, struct drm_file *file_priv)
4132 struct drm_mode_crtc_page_flip *page_flip = data;
4133 struct drm_mode_object *obj;
4134 struct drm_crtc *crtc;
4135 struct drm_framebuffer *fb = NULL, *old_fb = NULL;
4136 struct drm_pending_vblank_event *e = NULL;
4137 unsigned long flags;
4140 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4141 page_flip->reserved != 0)
4144 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4147 obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC);
4150 crtc = obj_to_crtc(obj);
4152 mutex_lock(&crtc->mutex);
4153 if (crtc->primary->fb == NULL) {
4154 /* The framebuffer is currently unbound, presumably
4155 * due to a hotplug event, that userspace has not
4162 if (crtc->funcs->page_flip == NULL)
4165 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
4171 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4175 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
4176 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4181 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4183 spin_lock_irqsave(&dev->event_lock, flags);
4184 if (file_priv->event_space < sizeof e->event) {
4185 spin_unlock_irqrestore(&dev->event_lock, flags);
4188 file_priv->event_space -= sizeof e->event;
4189 spin_unlock_irqrestore(&dev->event_lock, flags);
4191 e = kzalloc(sizeof *e, GFP_KERNEL);
4193 spin_lock_irqsave(&dev->event_lock, flags);
4194 file_priv->event_space += sizeof e->event;
4195 spin_unlock_irqrestore(&dev->event_lock, flags);
4199 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
4200 e->event.base.length = sizeof e->event;
4201 e->event.user_data = page_flip->user_data;
4202 e->base.event = &e->event.base;
4203 e->base.file_priv = file_priv;
4205 (void (*) (struct drm_pending_event *)) kfree;
4208 old_fb = crtc->primary->fb;
4209 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
4211 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4212 spin_lock_irqsave(&dev->event_lock, flags);
4213 file_priv->event_space += sizeof e->event;
4214 spin_unlock_irqrestore(&dev->event_lock, flags);
4217 /* Keep the old fb, don't unref it. */
4221 * Warn if the driver hasn't properly updated the crtc->fb
4222 * field to reflect that the new framebuffer is now used.
4223 * Failing to do so will screw with the reference counting
4226 WARN_ON(crtc->primary->fb != fb);
4227 /* Unref only the old framebuffer. */
4233 drm_framebuffer_unreference(fb);
4235 drm_framebuffer_unreference(old_fb);
4236 mutex_unlock(&crtc->mutex);
4242 * drm_mode_config_reset - call ->reset callbacks
4245 * This functions calls all the crtc's, encoder's and connector's ->reset
4246 * callback. Drivers can use this in e.g. their driver load or resume code to
4247 * reset hardware and software state.
4249 void drm_mode_config_reset(struct drm_device *dev)
4251 struct drm_crtc *crtc;
4252 struct drm_encoder *encoder;
4253 struct drm_connector *connector;
4255 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4256 if (crtc->funcs->reset)
4257 crtc->funcs->reset(crtc);
4259 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4260 if (encoder->funcs->reset)
4261 encoder->funcs->reset(encoder);
4263 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4264 connector->status = connector_status_unknown;
4266 if (connector->funcs->reset)
4267 connector->funcs->reset(connector);
4270 EXPORT_SYMBOL(drm_mode_config_reset);
4273 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4276 * @file_priv: DRM file info
4278 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4279 * TTM or something else entirely) and returns the resulting buffer handle. This
4280 * handle can then be wrapped up into a framebuffer modeset object.
4282 * Note that userspace is not allowed to use such objects for render
4283 * acceleration - drivers must create their own private ioctls for such a use
4286 * Called by the user via ioctl.
4289 * Zero on success, errno on failure.
4291 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
4292 void *data, struct drm_file *file_priv)
4294 struct drm_mode_create_dumb *args = data;
4295 u32 cpp, stride, size;
4297 if (!dev->driver->dumb_create)
4299 if (!args->width || !args->height || !args->bpp)
4302 /* overflow checks for 32bit size calculations */
4303 cpp = DIV_ROUND_UP(args->bpp, 8);
4304 if (cpp > 0xffffffffU / args->width)
4306 stride = cpp * args->width;
4307 if (args->height > 0xffffffffU / stride)
4310 /* test for wrap-around */
4311 size = args->height * stride;
4312 if (PAGE_ALIGN(size) == 0)
4315 return dev->driver->dumb_create(file_priv, dev, args);
4319 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4322 * @file_priv: DRM file info
4324 * Allocate an offset in the drm device node's address space to be able to
4325 * memory map a dumb buffer.
4327 * Called by the user via ioctl.
4330 * Zero on success, errno on failure.
4332 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
4333 void *data, struct drm_file *file_priv)
4335 struct drm_mode_map_dumb *args = data;
4337 /* call driver ioctl to get mmap offset */
4338 if (!dev->driver->dumb_map_offset)
4341 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
4345 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4348 * @file_priv: DRM file info
4350 * This destroys the userspace handle for the given dumb backing storage buffer.
4351 * Since buffer objects must be reference counted in the kernel a buffer object
4352 * won't be immediately freed if a framebuffer modeset object still uses it.
4354 * Called by the user via ioctl.
4357 * Zero on success, errno on failure.
4359 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
4360 void *data, struct drm_file *file_priv)
4362 struct drm_mode_destroy_dumb *args = data;
4364 if (!dev->driver->dumb_destroy)
4367 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
4371 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4372 * @format: pixel format (DRM_FORMAT_*)
4373 * @depth: storage for the depth value
4374 * @bpp: storage for the bpp value
4376 * This only supports RGB formats here for compat with code that doesn't use
4377 * pixel formats directly yet.
4379 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
4384 case DRM_FORMAT_RGB332:
4385 case DRM_FORMAT_BGR233:
4389 case DRM_FORMAT_XRGB1555:
4390 case DRM_FORMAT_XBGR1555:
4391 case DRM_FORMAT_RGBX5551:
4392 case DRM_FORMAT_BGRX5551:
4393 case DRM_FORMAT_ARGB1555:
4394 case DRM_FORMAT_ABGR1555:
4395 case DRM_FORMAT_RGBA5551:
4396 case DRM_FORMAT_BGRA5551:
4400 case DRM_FORMAT_RGB565:
4401 case DRM_FORMAT_BGR565:
4405 case DRM_FORMAT_RGB888:
4406 case DRM_FORMAT_BGR888:
4410 case DRM_FORMAT_XRGB8888:
4411 case DRM_FORMAT_XBGR8888:
4412 case DRM_FORMAT_RGBX8888:
4413 case DRM_FORMAT_BGRX8888:
4417 case DRM_FORMAT_XRGB2101010:
4418 case DRM_FORMAT_XBGR2101010:
4419 case DRM_FORMAT_RGBX1010102:
4420 case DRM_FORMAT_BGRX1010102:
4421 case DRM_FORMAT_ARGB2101010:
4422 case DRM_FORMAT_ABGR2101010:
4423 case DRM_FORMAT_RGBA1010102:
4424 case DRM_FORMAT_BGRA1010102:
4428 case DRM_FORMAT_ARGB8888:
4429 case DRM_FORMAT_ABGR8888:
4430 case DRM_FORMAT_RGBA8888:
4431 case DRM_FORMAT_BGRA8888:
4436 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4437 drm_get_format_name(format));
4443 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
4446 * drm_format_num_planes - get the number of planes for format
4447 * @format: pixel format (DRM_FORMAT_*)
4450 * The number of planes used by the specified pixel format.
4452 int drm_format_num_planes(uint32_t format)
4455 case DRM_FORMAT_YUV410:
4456 case DRM_FORMAT_YVU410:
4457 case DRM_FORMAT_YUV411:
4458 case DRM_FORMAT_YVU411:
4459 case DRM_FORMAT_YUV420:
4460 case DRM_FORMAT_YVU420:
4461 case DRM_FORMAT_YUV422:
4462 case DRM_FORMAT_YVU422:
4463 case DRM_FORMAT_YUV444:
4464 case DRM_FORMAT_YVU444:
4466 case DRM_FORMAT_NV12:
4467 case DRM_FORMAT_NV21:
4468 case DRM_FORMAT_NV16:
4469 case DRM_FORMAT_NV61:
4470 case DRM_FORMAT_NV24:
4471 case DRM_FORMAT_NV42:
4477 EXPORT_SYMBOL(drm_format_num_planes);
4480 * drm_format_plane_cpp - determine the bytes per pixel value
4481 * @format: pixel format (DRM_FORMAT_*)
4482 * @plane: plane index
4485 * The bytes per pixel value for the specified plane.
4487 int drm_format_plane_cpp(uint32_t format, int plane)
4492 if (plane >= drm_format_num_planes(format))
4496 case DRM_FORMAT_YUYV:
4497 case DRM_FORMAT_YVYU:
4498 case DRM_FORMAT_UYVY:
4499 case DRM_FORMAT_VYUY:
4501 case DRM_FORMAT_NV12:
4502 case DRM_FORMAT_NV21:
4503 case DRM_FORMAT_NV16:
4504 case DRM_FORMAT_NV61:
4505 case DRM_FORMAT_NV24:
4506 case DRM_FORMAT_NV42:
4507 return plane ? 2 : 1;
4508 case DRM_FORMAT_YUV410:
4509 case DRM_FORMAT_YVU410:
4510 case DRM_FORMAT_YUV411:
4511 case DRM_FORMAT_YVU411:
4512 case DRM_FORMAT_YUV420:
4513 case DRM_FORMAT_YVU420:
4514 case DRM_FORMAT_YUV422:
4515 case DRM_FORMAT_YVU422:
4516 case DRM_FORMAT_YUV444:
4517 case DRM_FORMAT_YVU444:
4520 drm_fb_get_bpp_depth(format, &depth, &bpp);
4524 EXPORT_SYMBOL(drm_format_plane_cpp);
4527 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
4528 * @format: pixel format (DRM_FORMAT_*)
4531 * The horizontal chroma subsampling factor for the
4532 * specified pixel format.
4534 int drm_format_horz_chroma_subsampling(uint32_t format)
4537 case DRM_FORMAT_YUV411:
4538 case DRM_FORMAT_YVU411:
4539 case DRM_FORMAT_YUV410:
4540 case DRM_FORMAT_YVU410:
4542 case DRM_FORMAT_YUYV:
4543 case DRM_FORMAT_YVYU:
4544 case DRM_FORMAT_UYVY:
4545 case DRM_FORMAT_VYUY:
4546 case DRM_FORMAT_NV12:
4547 case DRM_FORMAT_NV21:
4548 case DRM_FORMAT_NV16:
4549 case DRM_FORMAT_NV61:
4550 case DRM_FORMAT_YUV422:
4551 case DRM_FORMAT_YVU422:
4552 case DRM_FORMAT_YUV420:
4553 case DRM_FORMAT_YVU420:
4559 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
4562 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
4563 * @format: pixel format (DRM_FORMAT_*)
4566 * The vertical chroma subsampling factor for the
4567 * specified pixel format.
4569 int drm_format_vert_chroma_subsampling(uint32_t format)
4572 case DRM_FORMAT_YUV410:
4573 case DRM_FORMAT_YVU410:
4575 case DRM_FORMAT_YUV420:
4576 case DRM_FORMAT_YVU420:
4577 case DRM_FORMAT_NV12:
4578 case DRM_FORMAT_NV21:
4584 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
4587 * drm_mode_config_init - initialize DRM mode_configuration structure
4590 * Initialize @dev's mode_config structure, used for tracking the graphics
4591 * configuration of @dev.
4593 * Since this initializes the modeset locks, no locking is possible. Which is no
4594 * problem, since this should happen single threaded at init time. It is the
4595 * driver's problem to ensure this guarantee.
4598 void drm_mode_config_init(struct drm_device *dev)
4600 mutex_init(&dev->mode_config.mutex);
4601 mutex_init(&dev->mode_config.idr_mutex);
4602 mutex_init(&dev->mode_config.fb_lock);
4603 INIT_LIST_HEAD(&dev->mode_config.fb_list);
4604 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
4605 INIT_LIST_HEAD(&dev->mode_config.connector_list);
4606 INIT_LIST_HEAD(&dev->mode_config.bridge_list);
4607 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
4608 INIT_LIST_HEAD(&dev->mode_config.property_list);
4609 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
4610 INIT_LIST_HEAD(&dev->mode_config.plane_list);
4611 idr_init(&dev->mode_config.crtc_idr);
4613 drm_modeset_lock_all(dev);
4614 drm_mode_create_standard_connector_properties(dev);
4615 drm_mode_create_standard_plane_properties(dev);
4616 drm_modeset_unlock_all(dev);
4618 /* Just to be sure */
4619 dev->mode_config.num_fb = 0;
4620 dev->mode_config.num_connector = 0;
4621 dev->mode_config.num_crtc = 0;
4622 dev->mode_config.num_encoder = 0;
4623 dev->mode_config.num_overlay_plane = 0;
4624 dev->mode_config.num_total_plane = 0;
4626 EXPORT_SYMBOL(drm_mode_config_init);
4629 * drm_mode_config_cleanup - free up DRM mode_config info
4632 * Free up all the connectors and CRTCs associated with this DRM device, then
4633 * free up the framebuffers and associated buffer objects.
4635 * Note that since this /should/ happen single-threaded at driver/device
4636 * teardown time, no locking is required. It's the driver's job to ensure that
4637 * this guarantee actually holds true.
4639 * FIXME: cleanup any dangling user buffer objects too
4641 void drm_mode_config_cleanup(struct drm_device *dev)
4643 struct drm_connector *connector, *ot;
4644 struct drm_crtc *crtc, *ct;
4645 struct drm_encoder *encoder, *enct;
4646 struct drm_bridge *bridge, *brt;
4647 struct drm_framebuffer *fb, *fbt;
4648 struct drm_property *property, *pt;
4649 struct drm_property_blob *blob, *bt;
4650 struct drm_plane *plane, *plt;
4652 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
4654 encoder->funcs->destroy(encoder);
4657 list_for_each_entry_safe(bridge, brt,
4658 &dev->mode_config.bridge_list, head) {
4659 bridge->funcs->destroy(bridge);
4662 list_for_each_entry_safe(connector, ot,
4663 &dev->mode_config.connector_list, head) {
4664 connector->funcs->destroy(connector);
4667 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
4669 drm_property_destroy(dev, property);
4672 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
4674 drm_property_destroy_blob(dev, blob);
4678 * Single-threaded teardown context, so it's not required to grab the
4679 * fb_lock to protect against concurrent fb_list access. Contrary, it
4680 * would actually deadlock with the drm_framebuffer_cleanup function.
4682 * Also, if there are any framebuffers left, that's a driver leak now,
4683 * so politely WARN about this.
4685 WARN_ON(!list_empty(&dev->mode_config.fb_list));
4686 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
4687 drm_framebuffer_remove(fb);
4690 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
4692 plane->funcs->destroy(plane);
4695 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
4696 crtc->funcs->destroy(crtc);
4699 idr_destroy(&dev->mode_config.crtc_idr);
4701 EXPORT_SYMBOL(drm_mode_config_cleanup);