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->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 - Initialise a new CRTC object
697 * @crtc: CRTC object to init
698 * @funcs: callbacks for the new CRTC
700 * Inits a new object created as base part of a driver crtc object.
703 * Zero on success, error code on failure.
705 int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
706 const struct drm_crtc_funcs *funcs)
712 crtc->invert_dimensions = false;
714 drm_modeset_lock_all(dev);
715 mutex_init(&crtc->mutex);
716 mutex_lock_nest_lock(&crtc->mutex, &dev->mode_config.mutex);
718 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
722 crtc->base.properties = &crtc->properties;
724 list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
725 dev->mode_config.num_crtc++;
728 drm_modeset_unlock_all(dev);
732 EXPORT_SYMBOL(drm_crtc_init);
735 * drm_crtc_cleanup - Clean up the core crtc usage
736 * @crtc: CRTC to cleanup
738 * This function cleans up @crtc and removes it from the DRM mode setting
739 * core. Note that the function does *not* free the crtc structure itself,
740 * this is the responsibility of the caller.
742 void drm_crtc_cleanup(struct drm_crtc *crtc)
744 struct drm_device *dev = crtc->dev;
746 kfree(crtc->gamma_store);
747 crtc->gamma_store = NULL;
749 drm_mode_object_put(dev, &crtc->base);
750 list_del(&crtc->head);
751 dev->mode_config.num_crtc--;
753 EXPORT_SYMBOL(drm_crtc_cleanup);
756 * drm_crtc_index - find the index of a registered CRTC
757 * @crtc: CRTC to find index for
759 * Given a registered CRTC, return the index of that CRTC within a DRM
760 * device's list of CRTCs.
762 unsigned int drm_crtc_index(struct drm_crtc *crtc)
764 unsigned int index = 0;
765 struct drm_crtc *tmp;
767 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
776 EXPORT_SYMBOL(drm_crtc_index);
779 * drm_mode_remove - remove and free a mode
780 * @connector: connector list to modify
781 * @mode: mode to remove
783 * Remove @mode from @connector's mode list, then free it.
785 static void drm_mode_remove(struct drm_connector *connector,
786 struct drm_display_mode *mode)
788 list_del(&mode->head);
789 drm_mode_destroy(connector->dev, mode);
793 * drm_connector_init - Init a preallocated connector
795 * @connector: the connector to init
796 * @funcs: callbacks for this connector
797 * @connector_type: user visible type of the connector
799 * Initialises a preallocated connector. Connectors should be
800 * subclassed as part of driver connector objects.
803 * Zero on success, error code on failure.
805 int drm_connector_init(struct drm_device *dev,
806 struct drm_connector *connector,
807 const struct drm_connector_funcs *funcs,
811 struct ida *connector_ida =
812 &drm_connector_enum_list[connector_type].ida;
814 drm_modeset_lock_all(dev);
816 ret = drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
820 connector->base.properties = &connector->properties;
821 connector->dev = dev;
822 connector->funcs = funcs;
823 connector->connector_type = connector_type;
824 connector->connector_type_id =
825 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
826 if (connector->connector_type_id < 0) {
827 ret = connector->connector_type_id;
828 drm_mode_object_put(dev, &connector->base);
831 INIT_LIST_HEAD(&connector->probed_modes);
832 INIT_LIST_HEAD(&connector->modes);
833 connector->edid_blob_ptr = NULL;
834 connector->status = connector_status_unknown;
836 list_add_tail(&connector->head, &dev->mode_config.connector_list);
837 dev->mode_config.num_connector++;
839 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
840 drm_object_attach_property(&connector->base,
841 dev->mode_config.edid_property,
844 drm_object_attach_property(&connector->base,
845 dev->mode_config.dpms_property, 0);
848 drm_modeset_unlock_all(dev);
852 EXPORT_SYMBOL(drm_connector_init);
855 * drm_connector_cleanup - cleans up an initialised connector
856 * @connector: connector to cleanup
858 * Cleans up the connector but doesn't free the object.
860 void drm_connector_cleanup(struct drm_connector *connector)
862 struct drm_device *dev = connector->dev;
863 struct drm_display_mode *mode, *t;
865 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
866 drm_mode_remove(connector, mode);
868 list_for_each_entry_safe(mode, t, &connector->modes, head)
869 drm_mode_remove(connector, mode);
871 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
872 connector->connector_type_id);
874 drm_mode_object_put(dev, &connector->base);
875 list_del(&connector->head);
876 dev->mode_config.num_connector--;
878 EXPORT_SYMBOL(drm_connector_cleanup);
881 * drm_connector_unplug_all - unregister connector userspace interfaces
884 * This function unregisters all connector userspace interfaces in sysfs. Should
885 * be call when the device is disconnected, e.g. from an usb driver's
886 * ->disconnect callback.
888 void drm_connector_unplug_all(struct drm_device *dev)
890 struct drm_connector *connector;
892 /* taking the mode config mutex ends up in a clash with sysfs */
893 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
894 drm_sysfs_connector_remove(connector);
897 EXPORT_SYMBOL(drm_connector_unplug_all);
900 * drm_bridge_init - initialize a drm transcoder/bridge
902 * @bridge: transcoder/bridge to set up
903 * @funcs: bridge function table
905 * Initialises a preallocated bridge. Bridges should be
906 * subclassed as part of driver connector objects.
909 * Zero on success, error code on failure.
911 int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
912 const struct drm_bridge_funcs *funcs)
916 drm_modeset_lock_all(dev);
918 ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
923 bridge->funcs = funcs;
925 list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
926 dev->mode_config.num_bridge++;
929 drm_modeset_unlock_all(dev);
932 EXPORT_SYMBOL(drm_bridge_init);
935 * drm_bridge_cleanup - cleans up an initialised bridge
936 * @bridge: bridge to cleanup
938 * Cleans up the bridge but doesn't free the object.
940 void drm_bridge_cleanup(struct drm_bridge *bridge)
942 struct drm_device *dev = bridge->dev;
944 drm_modeset_lock_all(dev);
945 drm_mode_object_put(dev, &bridge->base);
946 list_del(&bridge->head);
947 dev->mode_config.num_bridge--;
948 drm_modeset_unlock_all(dev);
950 EXPORT_SYMBOL(drm_bridge_cleanup);
953 * drm_encoder_init - Init a preallocated encoder
955 * @encoder: the encoder to init
956 * @funcs: callbacks for this encoder
957 * @encoder_type: user visible type of the encoder
959 * Initialises a preallocated encoder. Encoder should be
960 * subclassed as part of driver encoder objects.
963 * Zero on success, error code on failure.
965 int drm_encoder_init(struct drm_device *dev,
966 struct drm_encoder *encoder,
967 const struct drm_encoder_funcs *funcs,
972 drm_modeset_lock_all(dev);
974 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
979 encoder->encoder_type = encoder_type;
980 encoder->funcs = funcs;
982 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
983 dev->mode_config.num_encoder++;
986 drm_modeset_unlock_all(dev);
990 EXPORT_SYMBOL(drm_encoder_init);
993 * drm_encoder_cleanup - cleans up an initialised encoder
994 * @encoder: encoder to cleanup
996 * Cleans up the encoder but doesn't free the object.
998 void drm_encoder_cleanup(struct drm_encoder *encoder)
1000 struct drm_device *dev = encoder->dev;
1001 drm_modeset_lock_all(dev);
1002 drm_mode_object_put(dev, &encoder->base);
1003 list_del(&encoder->head);
1004 dev->mode_config.num_encoder--;
1005 drm_modeset_unlock_all(dev);
1007 EXPORT_SYMBOL(drm_encoder_cleanup);
1010 * drm_universal_plane_init - Initialize a new universal plane object
1012 * @plane: plane object to init
1013 * @possible_crtcs: bitmask of possible CRTCs
1014 * @funcs: callbacks for the new plane
1015 * @formats: array of supported formats (%DRM_FORMAT_*)
1016 * @format_count: number of elements in @formats
1017 * @type: type of plane (overlay, primary, cursor)
1019 * Initializes a plane object of type @type.
1022 * Zero on success, error code on failure.
1024 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1025 unsigned long possible_crtcs,
1026 const struct drm_plane_funcs *funcs,
1027 const uint32_t *formats, uint32_t format_count,
1028 enum drm_plane_type type)
1032 drm_modeset_lock_all(dev);
1034 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1038 plane->base.properties = &plane->properties;
1040 plane->funcs = funcs;
1041 plane->format_types = kmalloc(sizeof(uint32_t) * format_count,
1043 if (!plane->format_types) {
1044 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1045 drm_mode_object_put(dev, &plane->base);
1050 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1051 plane->format_count = format_count;
1052 plane->possible_crtcs = possible_crtcs;
1055 list_add_tail(&plane->head, &dev->mode_config.plane_list);
1056 dev->mode_config.num_total_plane++;
1057 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1058 dev->mode_config.num_overlay_plane++;
1060 drm_object_attach_property(&plane->base,
1061 dev->mode_config.plane_type_property,
1065 drm_modeset_unlock_all(dev);
1069 EXPORT_SYMBOL(drm_universal_plane_init);
1072 * drm_plane_init - Initialize a legacy plane
1074 * @plane: plane object to init
1075 * @possible_crtcs: bitmask of possible CRTCs
1076 * @funcs: callbacks for the new plane
1077 * @formats: array of supported formats (%DRM_FORMAT_*)
1078 * @format_count: number of elements in @formats
1079 * @is_primary: plane type (primary vs overlay)
1081 * Legacy API to initialize a DRM plane.
1083 * New drivers should call drm_universal_plane_init() instead.
1086 * Zero on success, error code on failure.
1088 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1089 unsigned long possible_crtcs,
1090 const struct drm_plane_funcs *funcs,
1091 const uint32_t *formats, uint32_t format_count,
1094 enum drm_plane_type type;
1096 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1097 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1098 formats, format_count, type);
1100 EXPORT_SYMBOL(drm_plane_init);
1103 * drm_plane_cleanup - Clean up the core plane usage
1104 * @plane: plane to cleanup
1106 * This function cleans up @plane and removes it from the DRM mode setting
1107 * core. Note that the function does *not* free the plane structure itself,
1108 * this is the responsibility of the caller.
1110 void drm_plane_cleanup(struct drm_plane *plane)
1112 struct drm_device *dev = plane->dev;
1114 drm_modeset_lock_all(dev);
1115 kfree(plane->format_types);
1116 drm_mode_object_put(dev, &plane->base);
1118 BUG_ON(list_empty(&plane->head));
1120 list_del(&plane->head);
1121 dev->mode_config.num_total_plane--;
1122 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1123 dev->mode_config.num_overlay_plane--;
1124 drm_modeset_unlock_all(dev);
1126 EXPORT_SYMBOL(drm_plane_cleanup);
1129 * drm_plane_force_disable - Forcibly disable a plane
1130 * @plane: plane to disable
1132 * Forces the plane to be disabled.
1134 * Used when the plane's current framebuffer is destroyed,
1135 * and when restoring fbdev mode.
1137 void drm_plane_force_disable(struct drm_plane *plane)
1144 ret = plane->funcs->disable_plane(plane);
1146 DRM_ERROR("failed to disable plane with busy fb\n");
1147 /* disconnect the plane from the fb and crtc: */
1148 __drm_framebuffer_unreference(plane->fb);
1152 EXPORT_SYMBOL(drm_plane_force_disable);
1154 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
1156 struct drm_property *edid;
1157 struct drm_property *dpms;
1160 * Standard properties (apply to all connectors)
1162 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1163 DRM_MODE_PROP_IMMUTABLE,
1165 dev->mode_config.edid_property = edid;
1167 dpms = drm_property_create_enum(dev, 0,
1168 "DPMS", drm_dpms_enum_list,
1169 ARRAY_SIZE(drm_dpms_enum_list));
1170 dev->mode_config.dpms_property = dpms;
1175 static int drm_mode_create_standard_plane_properties(struct drm_device *dev)
1177 struct drm_property *type;
1180 * Standard properties (apply to all planes)
1182 type = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1183 "type", drm_plane_type_enum_list,
1184 ARRAY_SIZE(drm_plane_type_enum_list));
1185 dev->mode_config.plane_type_property = type;
1191 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1194 * Called by a driver the first time a DVI-I connector is made.
1196 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1198 struct drm_property *dvi_i_selector;
1199 struct drm_property *dvi_i_subconnector;
1201 if (dev->mode_config.dvi_i_select_subconnector_property)
1205 drm_property_create_enum(dev, 0,
1206 "select subconnector",
1207 drm_dvi_i_select_enum_list,
1208 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1209 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1211 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1213 drm_dvi_i_subconnector_enum_list,
1214 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1215 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1219 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1222 * drm_create_tv_properties - create TV specific connector properties
1224 * @num_modes: number of different TV formats (modes) supported
1225 * @modes: array of pointers to strings containing name of each format
1227 * Called by a driver's TV initialization routine, this function creates
1228 * the TV specific connector properties for a given device. Caller is
1229 * responsible for allocating a list of format names and passing them to
1232 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
1235 struct drm_property *tv_selector;
1236 struct drm_property *tv_subconnector;
1239 if (dev->mode_config.tv_select_subconnector_property)
1243 * Basic connector properties
1245 tv_selector = drm_property_create_enum(dev, 0,
1246 "select subconnector",
1247 drm_tv_select_enum_list,
1248 ARRAY_SIZE(drm_tv_select_enum_list));
1249 dev->mode_config.tv_select_subconnector_property = tv_selector;
1252 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1254 drm_tv_subconnector_enum_list,
1255 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1256 dev->mode_config.tv_subconnector_property = tv_subconnector;
1259 * Other, TV specific properties: margins & TV modes.
1261 dev->mode_config.tv_left_margin_property =
1262 drm_property_create_range(dev, 0, "left margin", 0, 100);
1264 dev->mode_config.tv_right_margin_property =
1265 drm_property_create_range(dev, 0, "right margin", 0, 100);
1267 dev->mode_config.tv_top_margin_property =
1268 drm_property_create_range(dev, 0, "top margin", 0, 100);
1270 dev->mode_config.tv_bottom_margin_property =
1271 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1273 dev->mode_config.tv_mode_property =
1274 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1276 for (i = 0; i < num_modes; i++)
1277 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1280 dev->mode_config.tv_brightness_property =
1281 drm_property_create_range(dev, 0, "brightness", 0, 100);
1283 dev->mode_config.tv_contrast_property =
1284 drm_property_create_range(dev, 0, "contrast", 0, 100);
1286 dev->mode_config.tv_flicker_reduction_property =
1287 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1289 dev->mode_config.tv_overscan_property =
1290 drm_property_create_range(dev, 0, "overscan", 0, 100);
1292 dev->mode_config.tv_saturation_property =
1293 drm_property_create_range(dev, 0, "saturation", 0, 100);
1295 dev->mode_config.tv_hue_property =
1296 drm_property_create_range(dev, 0, "hue", 0, 100);
1300 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1303 * drm_mode_create_scaling_mode_property - create scaling mode property
1306 * Called by a driver the first time it's needed, must be attached to desired
1309 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1311 struct drm_property *scaling_mode;
1313 if (dev->mode_config.scaling_mode_property)
1317 drm_property_create_enum(dev, 0, "scaling mode",
1318 drm_scaling_mode_enum_list,
1319 ARRAY_SIZE(drm_scaling_mode_enum_list));
1321 dev->mode_config.scaling_mode_property = scaling_mode;
1325 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1328 * drm_mode_create_dirty_property - create dirty property
1331 * Called by a driver the first time it's needed, must be attached to desired
1334 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1336 struct drm_property *dirty_info;
1338 if (dev->mode_config.dirty_info_property)
1342 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1344 drm_dirty_info_enum_list,
1345 ARRAY_SIZE(drm_dirty_info_enum_list));
1346 dev->mode_config.dirty_info_property = dirty_info;
1350 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1352 static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
1354 uint32_t total_objects = 0;
1356 total_objects += dev->mode_config.num_crtc;
1357 total_objects += dev->mode_config.num_connector;
1358 total_objects += dev->mode_config.num_encoder;
1359 total_objects += dev->mode_config.num_bridge;
1361 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
1362 if (!group->id_list)
1365 group->num_crtcs = 0;
1366 group->num_connectors = 0;
1367 group->num_encoders = 0;
1368 group->num_bridges = 0;
1373 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1374 * the drm core's responsibility to set up mode control groups.
1376 int drm_mode_group_init_legacy_group(struct drm_device *dev,
1377 struct drm_mode_group *group)
1379 struct drm_crtc *crtc;
1380 struct drm_encoder *encoder;
1381 struct drm_connector *connector;
1382 struct drm_bridge *bridge;
1385 if ((ret = drm_mode_group_init(dev, group)))
1388 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1389 group->id_list[group->num_crtcs++] = crtc->base.id;
1391 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1392 group->id_list[group->num_crtcs + group->num_encoders++] =
1395 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1396 group->id_list[group->num_crtcs + group->num_encoders +
1397 group->num_connectors++] = connector->base.id;
1399 list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
1400 group->id_list[group->num_crtcs + group->num_encoders +
1401 group->num_connectors + group->num_bridges++] =
1406 EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
1409 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1410 * @out: drm_mode_modeinfo struct to return to the user
1411 * @in: drm_display_mode to use
1413 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1416 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1417 const struct drm_display_mode *in)
1419 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1420 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1421 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1422 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1423 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1424 "timing values too large for mode info\n");
1426 out->clock = in->clock;
1427 out->hdisplay = in->hdisplay;
1428 out->hsync_start = in->hsync_start;
1429 out->hsync_end = in->hsync_end;
1430 out->htotal = in->htotal;
1431 out->hskew = in->hskew;
1432 out->vdisplay = in->vdisplay;
1433 out->vsync_start = in->vsync_start;
1434 out->vsync_end = in->vsync_end;
1435 out->vtotal = in->vtotal;
1436 out->vscan = in->vscan;
1437 out->vrefresh = in->vrefresh;
1438 out->flags = in->flags;
1439 out->type = in->type;
1440 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1441 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1445 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1446 * @out: drm_display_mode to return to the user
1447 * @in: drm_mode_modeinfo to use
1449 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1453 * Zero on success, errno on failure.
1455 static int drm_crtc_convert_umode(struct drm_display_mode *out,
1456 const struct drm_mode_modeinfo *in)
1458 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1461 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1464 out->clock = in->clock;
1465 out->hdisplay = in->hdisplay;
1466 out->hsync_start = in->hsync_start;
1467 out->hsync_end = in->hsync_end;
1468 out->htotal = in->htotal;
1469 out->hskew = in->hskew;
1470 out->vdisplay = in->vdisplay;
1471 out->vsync_start = in->vsync_start;
1472 out->vsync_end = in->vsync_end;
1473 out->vtotal = in->vtotal;
1474 out->vscan = in->vscan;
1475 out->vrefresh = in->vrefresh;
1476 out->flags = in->flags;
1477 out->type = in->type;
1478 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1479 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1485 * drm_mode_getresources - get graphics configuration
1486 * @dev: drm device for the ioctl
1487 * @data: data pointer for the ioctl
1488 * @file_priv: drm file for the ioctl call
1490 * Construct a set of configuration description structures and return
1491 * them to the user, including CRTC, connector and framebuffer configuration.
1493 * Called by the user via ioctl.
1496 * Zero on success, errno on failure.
1498 int drm_mode_getresources(struct drm_device *dev, void *data,
1499 struct drm_file *file_priv)
1501 struct drm_mode_card_res *card_res = data;
1502 struct list_head *lh;
1503 struct drm_framebuffer *fb;
1504 struct drm_connector *connector;
1505 struct drm_crtc *crtc;
1506 struct drm_encoder *encoder;
1508 int connector_count = 0;
1511 int encoder_count = 0;
1513 uint32_t __user *fb_id;
1514 uint32_t __user *crtc_id;
1515 uint32_t __user *connector_id;
1516 uint32_t __user *encoder_id;
1517 struct drm_mode_group *mode_group;
1519 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1523 mutex_lock(&file_priv->fbs_lock);
1525 * For the non-control nodes we need to limit the list of resources
1526 * by IDs in the group list for this node
1528 list_for_each(lh, &file_priv->fbs)
1531 /* handle this in 4 parts */
1533 if (card_res->count_fbs >= fb_count) {
1535 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1536 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1537 if (put_user(fb->base.id, fb_id + copied)) {
1538 mutex_unlock(&file_priv->fbs_lock);
1544 card_res->count_fbs = fb_count;
1545 mutex_unlock(&file_priv->fbs_lock);
1547 drm_modeset_lock_all(dev);
1548 if (!drm_is_primary_client(file_priv)) {
1551 list_for_each(lh, &dev->mode_config.crtc_list)
1554 list_for_each(lh, &dev->mode_config.connector_list)
1557 list_for_each(lh, &dev->mode_config.encoder_list)
1561 mode_group = &file_priv->master->minor->mode_group;
1562 crtc_count = mode_group->num_crtcs;
1563 connector_count = mode_group->num_connectors;
1564 encoder_count = mode_group->num_encoders;
1567 card_res->max_height = dev->mode_config.max_height;
1568 card_res->min_height = dev->mode_config.min_height;
1569 card_res->max_width = dev->mode_config.max_width;
1570 card_res->min_width = dev->mode_config.min_width;
1573 if (card_res->count_crtcs >= crtc_count) {
1575 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1577 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1579 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1580 if (put_user(crtc->base.id, crtc_id + copied)) {
1587 for (i = 0; i < mode_group->num_crtcs; i++) {
1588 if (put_user(mode_group->id_list[i],
1589 crtc_id + copied)) {
1597 card_res->count_crtcs = crtc_count;
1600 if (card_res->count_encoders >= encoder_count) {
1602 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1604 list_for_each_entry(encoder,
1605 &dev->mode_config.encoder_list,
1607 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1608 drm_get_encoder_name(encoder));
1609 if (put_user(encoder->base.id, encoder_id +
1617 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1618 if (put_user(mode_group->id_list[i],
1619 encoder_id + copied)) {
1628 card_res->count_encoders = encoder_count;
1631 if (card_res->count_connectors >= connector_count) {
1633 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1635 list_for_each_entry(connector,
1636 &dev->mode_config.connector_list,
1638 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1640 drm_get_connector_name(connector));
1641 if (put_user(connector->base.id,
1642 connector_id + copied)) {
1649 int start = mode_group->num_crtcs +
1650 mode_group->num_encoders;
1651 for (i = start; i < start + mode_group->num_connectors; i++) {
1652 if (put_user(mode_group->id_list[i],
1653 connector_id + copied)) {
1661 card_res->count_connectors = connector_count;
1663 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1664 card_res->count_connectors, card_res->count_encoders);
1667 drm_modeset_unlock_all(dev);
1672 * drm_mode_getcrtc - get CRTC configuration
1673 * @dev: drm device for the ioctl
1674 * @data: data pointer for the ioctl
1675 * @file_priv: drm file for the ioctl call
1677 * Construct a CRTC configuration structure to return to the user.
1679 * Called by the user via ioctl.
1682 * Zero on success, errno on failure.
1684 int drm_mode_getcrtc(struct drm_device *dev,
1685 void *data, struct drm_file *file_priv)
1687 struct drm_mode_crtc *crtc_resp = data;
1688 struct drm_crtc *crtc;
1689 struct drm_mode_object *obj;
1692 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1695 drm_modeset_lock_all(dev);
1697 obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1698 DRM_MODE_OBJECT_CRTC);
1703 crtc = obj_to_crtc(obj);
1705 crtc_resp->x = crtc->x;
1706 crtc_resp->y = crtc->y;
1707 crtc_resp->gamma_size = crtc->gamma_size;
1709 crtc_resp->fb_id = crtc->fb->base.id;
1711 crtc_resp->fb_id = 0;
1713 if (crtc->enabled) {
1715 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1716 crtc_resp->mode_valid = 1;
1719 crtc_resp->mode_valid = 0;
1723 drm_modeset_unlock_all(dev);
1727 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1728 const struct drm_file *file_priv)
1731 * If user-space hasn't configured the driver to expose the stereo 3D
1732 * modes, don't expose them.
1734 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1741 * drm_mode_getconnector - get connector configuration
1742 * @dev: drm device for the ioctl
1743 * @data: data pointer for the ioctl
1744 * @file_priv: drm file for the ioctl call
1746 * Construct a connector configuration structure to return to the user.
1748 * Called by the user via ioctl.
1751 * Zero on success, errno on failure.
1753 int drm_mode_getconnector(struct drm_device *dev, void *data,
1754 struct drm_file *file_priv)
1756 struct drm_mode_get_connector *out_resp = data;
1757 struct drm_mode_object *obj;
1758 struct drm_connector *connector;
1759 struct drm_display_mode *mode;
1761 int props_count = 0;
1762 int encoders_count = 0;
1766 struct drm_mode_modeinfo u_mode;
1767 struct drm_mode_modeinfo __user *mode_ptr;
1768 uint32_t __user *prop_ptr;
1769 uint64_t __user *prop_values;
1770 uint32_t __user *encoder_ptr;
1772 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1775 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1777 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1779 mutex_lock(&dev->mode_config.mutex);
1781 obj = drm_mode_object_find(dev, out_resp->connector_id,
1782 DRM_MODE_OBJECT_CONNECTOR);
1787 connector = obj_to_connector(obj);
1789 props_count = connector->properties.count;
1791 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1792 if (connector->encoder_ids[i] != 0) {
1797 if (out_resp->count_modes == 0) {
1798 connector->funcs->fill_modes(connector,
1799 dev->mode_config.max_width,
1800 dev->mode_config.max_height);
1803 /* delayed so we get modes regardless of pre-fill_modes state */
1804 list_for_each_entry(mode, &connector->modes, head)
1805 if (drm_mode_expose_to_userspace(mode, file_priv))
1808 out_resp->connector_id = connector->base.id;
1809 out_resp->connector_type = connector->connector_type;
1810 out_resp->connector_type_id = connector->connector_type_id;
1811 out_resp->mm_width = connector->display_info.width_mm;
1812 out_resp->mm_height = connector->display_info.height_mm;
1813 out_resp->subpixel = connector->display_info.subpixel_order;
1814 out_resp->connection = connector->status;
1815 if (connector->encoder)
1816 out_resp->encoder_id = connector->encoder->base.id;
1818 out_resp->encoder_id = 0;
1821 * This ioctl is called twice, once to determine how much space is
1822 * needed, and the 2nd time to fill it.
1824 if ((out_resp->count_modes >= mode_count) && mode_count) {
1826 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
1827 list_for_each_entry(mode, &connector->modes, head) {
1828 if (!drm_mode_expose_to_userspace(mode, file_priv))
1831 drm_crtc_convert_to_umode(&u_mode, mode);
1832 if (copy_to_user(mode_ptr + copied,
1833 &u_mode, sizeof(u_mode))) {
1840 out_resp->count_modes = mode_count;
1842 if ((out_resp->count_props >= props_count) && props_count) {
1844 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
1845 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
1846 for (i = 0; i < connector->properties.count; i++) {
1847 if (put_user(connector->properties.ids[i],
1848 prop_ptr + copied)) {
1853 if (put_user(connector->properties.values[i],
1854 prop_values + copied)) {
1861 out_resp->count_props = props_count;
1863 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1865 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
1866 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1867 if (connector->encoder_ids[i] != 0) {
1868 if (put_user(connector->encoder_ids[i],
1869 encoder_ptr + copied)) {
1877 out_resp->count_encoders = encoders_count;
1880 mutex_unlock(&dev->mode_config.mutex);
1886 * drm_mode_getencoder - get encoder configuration
1887 * @dev: drm device for the ioctl
1888 * @data: data pointer for the ioctl
1889 * @file_priv: drm file for the ioctl call
1891 * Construct a encoder configuration structure to return to the user.
1893 * Called by the user via ioctl.
1896 * Zero on success, errno on failure.
1898 int drm_mode_getencoder(struct drm_device *dev, void *data,
1899 struct drm_file *file_priv)
1901 struct drm_mode_get_encoder *enc_resp = data;
1902 struct drm_mode_object *obj;
1903 struct drm_encoder *encoder;
1906 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1909 drm_modeset_lock_all(dev);
1910 obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1911 DRM_MODE_OBJECT_ENCODER);
1916 encoder = obj_to_encoder(obj);
1919 enc_resp->crtc_id = encoder->crtc->base.id;
1921 enc_resp->crtc_id = 0;
1922 enc_resp->encoder_type = encoder->encoder_type;
1923 enc_resp->encoder_id = encoder->base.id;
1924 enc_resp->possible_crtcs = encoder->possible_crtcs;
1925 enc_resp->possible_clones = encoder->possible_clones;
1928 drm_modeset_unlock_all(dev);
1933 * drm_mode_getplane_res - enumerate all plane resources
1936 * @file_priv: DRM file info
1938 * Construct a list of plane ids to return to the user.
1940 * Called by the user via ioctl.
1943 * Zero on success, errno on failure.
1945 int drm_mode_getplane_res(struct drm_device *dev, void *data,
1946 struct drm_file *file_priv)
1948 struct drm_mode_get_plane_res *plane_resp = data;
1949 struct drm_mode_config *config;
1950 struct drm_plane *plane;
1951 uint32_t __user *plane_ptr;
1952 int copied = 0, ret = 0;
1954 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1957 drm_modeset_lock_all(dev);
1958 config = &dev->mode_config;
1961 * This ioctl is called twice, once to determine how much space is
1962 * needed, and the 2nd time to fill it.
1964 if (config->num_overlay_plane &&
1965 (plane_resp->count_planes >= config->num_overlay_plane)) {
1966 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
1968 list_for_each_entry(plane, &config->plane_list, head) {
1969 /* Only advertise overlays to userspace for now. */
1970 if (plane->type != DRM_PLANE_TYPE_OVERLAY)
1973 if (put_user(plane->base.id, plane_ptr + copied)) {
1980 plane_resp->count_planes = config->num_overlay_plane;
1983 drm_modeset_unlock_all(dev);
1988 * drm_mode_getplane - get plane configuration
1991 * @file_priv: DRM file info
1993 * Construct a plane configuration structure to return to the user.
1995 * Called by the user via ioctl.
1998 * Zero on success, errno on failure.
2000 int drm_mode_getplane(struct drm_device *dev, void *data,
2001 struct drm_file *file_priv)
2003 struct drm_mode_get_plane *plane_resp = data;
2004 struct drm_mode_object *obj;
2005 struct drm_plane *plane;
2006 uint32_t __user *format_ptr;
2009 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2012 drm_modeset_lock_all(dev);
2013 obj = drm_mode_object_find(dev, plane_resp->plane_id,
2014 DRM_MODE_OBJECT_PLANE);
2019 plane = obj_to_plane(obj);
2022 plane_resp->crtc_id = plane->crtc->base.id;
2024 plane_resp->crtc_id = 0;
2027 plane_resp->fb_id = plane->fb->base.id;
2029 plane_resp->fb_id = 0;
2031 plane_resp->plane_id = plane->base.id;
2032 plane_resp->possible_crtcs = plane->possible_crtcs;
2033 plane_resp->gamma_size = 0;
2036 * This ioctl is called twice, once to determine how much space is
2037 * needed, and the 2nd time to fill it.
2039 if (plane->format_count &&
2040 (plane_resp->count_format_types >= plane->format_count)) {
2041 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2042 if (copy_to_user(format_ptr,
2043 plane->format_types,
2044 sizeof(uint32_t) * plane->format_count)) {
2049 plane_resp->count_format_types = plane->format_count;
2052 drm_modeset_unlock_all(dev);
2057 * drm_mode_setplane - configure a plane's configuration
2059 * @data: ioctl data*
2060 * @file_priv: DRM file info
2062 * Set plane configuration, including placement, fb, scaling, and other factors.
2063 * Or pass a NULL fb to disable.
2066 * Zero on success, errno on failure.
2068 int drm_mode_setplane(struct drm_device *dev, void *data,
2069 struct drm_file *file_priv)
2071 struct drm_mode_set_plane *plane_req = data;
2072 struct drm_mode_object *obj;
2073 struct drm_plane *plane;
2074 struct drm_crtc *crtc;
2075 struct drm_framebuffer *fb = NULL, *old_fb = NULL;
2077 unsigned int fb_width, fb_height;
2080 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2084 * First, find the plane, crtc, and fb objects. If not available,
2085 * we don't bother to call the driver.
2087 obj = drm_mode_object_find(dev, plane_req->plane_id,
2088 DRM_MODE_OBJECT_PLANE);
2090 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2091 plane_req->plane_id);
2094 plane = obj_to_plane(obj);
2096 /* No fb means shut it down */
2097 if (!plane_req->fb_id) {
2098 drm_modeset_lock_all(dev);
2100 plane->funcs->disable_plane(plane);
2103 drm_modeset_unlock_all(dev);
2107 obj = drm_mode_object_find(dev, plane_req->crtc_id,
2108 DRM_MODE_OBJECT_CRTC);
2110 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2111 plane_req->crtc_id);
2115 crtc = obj_to_crtc(obj);
2117 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2119 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2125 /* Check whether this plane supports the fb pixel format. */
2126 for (i = 0; i < plane->format_count; i++)
2127 if (fb->pixel_format == plane->format_types[i])
2129 if (i == plane->format_count) {
2130 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2131 drm_get_format_name(fb->pixel_format));
2136 fb_width = fb->width << 16;
2137 fb_height = fb->height << 16;
2139 /* Make sure source coordinates are inside the fb. */
2140 if (plane_req->src_w > fb_width ||
2141 plane_req->src_x > fb_width - plane_req->src_w ||
2142 plane_req->src_h > fb_height ||
2143 plane_req->src_y > fb_height - plane_req->src_h) {
2144 DRM_DEBUG_KMS("Invalid source coordinates "
2145 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2146 plane_req->src_w >> 16,
2147 ((plane_req->src_w & 0xffff) * 15625) >> 10,
2148 plane_req->src_h >> 16,
2149 ((plane_req->src_h & 0xffff) * 15625) >> 10,
2150 plane_req->src_x >> 16,
2151 ((plane_req->src_x & 0xffff) * 15625) >> 10,
2152 plane_req->src_y >> 16,
2153 ((plane_req->src_y & 0xffff) * 15625) >> 10);
2158 /* Give drivers some help against integer overflows */
2159 if (plane_req->crtc_w > INT_MAX ||
2160 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2161 plane_req->crtc_h > INT_MAX ||
2162 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2163 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2164 plane_req->crtc_w, plane_req->crtc_h,
2165 plane_req->crtc_x, plane_req->crtc_y);
2170 drm_modeset_lock_all(dev);
2171 ret = plane->funcs->update_plane(plane, crtc, fb,
2172 plane_req->crtc_x, plane_req->crtc_y,
2173 plane_req->crtc_w, plane_req->crtc_h,
2174 plane_req->src_x, plane_req->src_y,
2175 plane_req->src_w, plane_req->src_h);
2182 drm_modeset_unlock_all(dev);
2186 drm_framebuffer_unreference(fb);
2188 drm_framebuffer_unreference(old_fb);
2194 * drm_mode_set_config_internal - helper to call ->set_config
2195 * @set: modeset config to set
2197 * This is a little helper to wrap internal calls to the ->set_config driver
2198 * interface. The only thing it adds is correct refcounting dance.
2201 * Zero on success, errno on failure.
2203 int drm_mode_set_config_internal(struct drm_mode_set *set)
2205 struct drm_crtc *crtc = set->crtc;
2206 struct drm_framebuffer *fb;
2207 struct drm_crtc *tmp;
2211 * NOTE: ->set_config can also disable other crtcs (if we steal all
2212 * connectors from it), hence we need to refcount the fbs across all
2213 * crtcs. Atomic modeset will have saner semantics ...
2215 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
2216 tmp->old_fb = tmp->fb;
2220 ret = crtc->funcs->set_config(set);
2222 /* crtc->fb must be updated by ->set_config, enforces this. */
2223 WARN_ON(fb != crtc->fb);
2226 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
2228 drm_framebuffer_reference(tmp->fb);
2230 drm_framebuffer_unreference(tmp->old_fb);
2235 EXPORT_SYMBOL(drm_mode_set_config_internal);
2238 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2240 * @crtc: CRTC that framebuffer will be displayed on
2243 * @mode: mode that framebuffer will be displayed under
2244 * @fb: framebuffer to check size of
2246 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2248 const struct drm_display_mode *mode,
2249 const struct drm_framebuffer *fb)
2252 int hdisplay, vdisplay;
2254 hdisplay = mode->hdisplay;
2255 vdisplay = mode->vdisplay;
2257 if (drm_mode_is_stereo(mode)) {
2258 struct drm_display_mode adjusted = *mode;
2260 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE);
2261 hdisplay = adjusted.crtc_hdisplay;
2262 vdisplay = adjusted.crtc_vdisplay;
2265 if (crtc->invert_dimensions)
2266 swap(hdisplay, vdisplay);
2268 if (hdisplay > fb->width ||
2269 vdisplay > fb->height ||
2270 x > fb->width - hdisplay ||
2271 y > fb->height - vdisplay) {
2272 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2273 fb->width, fb->height, hdisplay, vdisplay, x, y,
2274 crtc->invert_dimensions ? " (inverted)" : "");
2280 EXPORT_SYMBOL(drm_crtc_check_viewport);
2283 * drm_mode_setcrtc - set CRTC configuration
2284 * @dev: drm device for the ioctl
2285 * @data: data pointer for the ioctl
2286 * @file_priv: drm file for the ioctl call
2288 * Build a new CRTC configuration based on user request.
2290 * Called by the user via ioctl.
2293 * Zero on success, errno on failure.
2295 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2296 struct drm_file *file_priv)
2298 struct drm_mode_config *config = &dev->mode_config;
2299 struct drm_mode_crtc *crtc_req = data;
2300 struct drm_mode_object *obj;
2301 struct drm_crtc *crtc;
2302 struct drm_connector **connector_set = NULL, *connector;
2303 struct drm_framebuffer *fb = NULL;
2304 struct drm_display_mode *mode = NULL;
2305 struct drm_mode_set set;
2306 uint32_t __user *set_connectors_ptr;
2310 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2313 /* For some reason crtc x/y offsets are signed internally. */
2314 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2317 drm_modeset_lock_all(dev);
2318 obj = drm_mode_object_find(dev, crtc_req->crtc_id,
2319 DRM_MODE_OBJECT_CRTC);
2321 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2325 crtc = obj_to_crtc(obj);
2326 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2328 if (crtc_req->mode_valid) {
2329 /* If we have a mode we need a framebuffer. */
2330 /* If we pass -1, set the mode with the currently bound fb */
2331 if (crtc_req->fb_id == -1) {
2333 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2338 /* Make refcounting symmetric with the lookup path. */
2339 drm_framebuffer_reference(fb);
2341 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2343 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2350 mode = drm_mode_create(dev);
2356 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2358 DRM_DEBUG_KMS("Invalid mode\n");
2362 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2364 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2371 if (crtc_req->count_connectors == 0 && mode) {
2372 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2377 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2378 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2379 crtc_req->count_connectors);
2384 if (crtc_req->count_connectors > 0) {
2387 /* Avoid unbounded kernel memory allocation */
2388 if (crtc_req->count_connectors > config->num_connector) {
2393 connector_set = kmalloc(crtc_req->count_connectors *
2394 sizeof(struct drm_connector *),
2396 if (!connector_set) {
2401 for (i = 0; i < crtc_req->count_connectors; i++) {
2402 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2403 if (get_user(out_id, &set_connectors_ptr[i])) {
2408 obj = drm_mode_object_find(dev, out_id,
2409 DRM_MODE_OBJECT_CONNECTOR);
2411 DRM_DEBUG_KMS("Connector id %d unknown\n",
2416 connector = obj_to_connector(obj);
2417 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2419 drm_get_connector_name(connector));
2421 connector_set[i] = connector;
2426 set.x = crtc_req->x;
2427 set.y = crtc_req->y;
2429 set.connectors = connector_set;
2430 set.num_connectors = crtc_req->count_connectors;
2432 ret = drm_mode_set_config_internal(&set);
2436 drm_framebuffer_unreference(fb);
2438 kfree(connector_set);
2439 drm_mode_destroy(dev, mode);
2440 drm_modeset_unlock_all(dev);
2444 static int drm_mode_cursor_common(struct drm_device *dev,
2445 struct drm_mode_cursor2 *req,
2446 struct drm_file *file_priv)
2448 struct drm_mode_object *obj;
2449 struct drm_crtc *crtc;
2452 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2455 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2458 obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
2460 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2463 crtc = obj_to_crtc(obj);
2465 mutex_lock(&crtc->mutex);
2466 if (req->flags & DRM_MODE_CURSOR_BO) {
2467 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
2471 /* Turns off the cursor if handle is 0 */
2472 if (crtc->funcs->cursor_set2)
2473 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2474 req->width, req->height, req->hot_x, req->hot_y);
2476 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2477 req->width, req->height);
2480 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2481 if (crtc->funcs->cursor_move) {
2482 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2489 mutex_unlock(&crtc->mutex);
2497 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2498 * @dev: drm device for the ioctl
2499 * @data: data pointer for the ioctl
2500 * @file_priv: drm file for the ioctl call
2502 * Set the cursor configuration based on user request.
2504 * Called by the user via ioctl.
2507 * Zero on success, errno on failure.
2509 int drm_mode_cursor_ioctl(struct drm_device *dev,
2510 void *data, struct drm_file *file_priv)
2512 struct drm_mode_cursor *req = data;
2513 struct drm_mode_cursor2 new_req;
2515 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2516 new_req.hot_x = new_req.hot_y = 0;
2518 return drm_mode_cursor_common(dev, &new_req, file_priv);
2522 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2523 * @dev: drm device for the ioctl
2524 * @data: data pointer for the ioctl
2525 * @file_priv: drm file for the ioctl call
2527 * Set the cursor configuration based on user request. This implements the 2nd
2528 * version of the cursor ioctl, which allows userspace to additionally specify
2529 * the hotspot of the pointer.
2531 * Called by the user via ioctl.
2534 * Zero on success, errno on failure.
2536 int drm_mode_cursor2_ioctl(struct drm_device *dev,
2537 void *data, struct drm_file *file_priv)
2539 struct drm_mode_cursor2 *req = data;
2540 return drm_mode_cursor_common(dev, req, file_priv);
2544 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2545 * @bpp: bits per pixels
2546 * @depth: bit depth per pixel
2548 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2549 * Useful in fbdev emulation code, since that deals in those values.
2551 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2557 fmt = DRM_FORMAT_C8;
2561 fmt = DRM_FORMAT_XRGB1555;
2563 fmt = DRM_FORMAT_RGB565;
2566 fmt = DRM_FORMAT_RGB888;
2570 fmt = DRM_FORMAT_XRGB8888;
2571 else if (depth == 30)
2572 fmt = DRM_FORMAT_XRGB2101010;
2574 fmt = DRM_FORMAT_ARGB8888;
2577 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2578 fmt = DRM_FORMAT_XRGB8888;
2584 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
2587 * drm_mode_addfb - add an FB to the graphics configuration
2588 * @dev: drm device for the ioctl
2589 * @data: data pointer for the ioctl
2590 * @file_priv: drm file for the ioctl call
2592 * Add a new FB to the specified CRTC, given a user request. This is the
2593 * original addfb ioclt which only supported RGB formats.
2595 * Called by the user via ioctl.
2598 * Zero on success, errno on failure.
2600 int drm_mode_addfb(struct drm_device *dev,
2601 void *data, struct drm_file *file_priv)
2603 struct drm_mode_fb_cmd *or = data;
2604 struct drm_mode_fb_cmd2 r = {};
2605 struct drm_mode_config *config = &dev->mode_config;
2606 struct drm_framebuffer *fb;
2609 /* Use new struct with format internally */
2610 r.fb_id = or->fb_id;
2611 r.width = or->width;
2612 r.height = or->height;
2613 r.pitches[0] = or->pitch;
2614 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
2615 r.handles[0] = or->handle;
2617 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2620 if ((config->min_width > r.width) || (r.width > config->max_width))
2623 if ((config->min_height > r.height) || (r.height > config->max_height))
2626 fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r);
2628 DRM_DEBUG_KMS("could not create framebuffer\n");
2632 mutex_lock(&file_priv->fbs_lock);
2633 or->fb_id = fb->base.id;
2634 list_add(&fb->filp_head, &file_priv->fbs);
2635 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2636 mutex_unlock(&file_priv->fbs_lock);
2641 static int format_check(const struct drm_mode_fb_cmd2 *r)
2643 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
2647 case DRM_FORMAT_RGB332:
2648 case DRM_FORMAT_BGR233:
2649 case DRM_FORMAT_XRGB4444:
2650 case DRM_FORMAT_XBGR4444:
2651 case DRM_FORMAT_RGBX4444:
2652 case DRM_FORMAT_BGRX4444:
2653 case DRM_FORMAT_ARGB4444:
2654 case DRM_FORMAT_ABGR4444:
2655 case DRM_FORMAT_RGBA4444:
2656 case DRM_FORMAT_BGRA4444:
2657 case DRM_FORMAT_XRGB1555:
2658 case DRM_FORMAT_XBGR1555:
2659 case DRM_FORMAT_RGBX5551:
2660 case DRM_FORMAT_BGRX5551:
2661 case DRM_FORMAT_ARGB1555:
2662 case DRM_FORMAT_ABGR1555:
2663 case DRM_FORMAT_RGBA5551:
2664 case DRM_FORMAT_BGRA5551:
2665 case DRM_FORMAT_RGB565:
2666 case DRM_FORMAT_BGR565:
2667 case DRM_FORMAT_RGB888:
2668 case DRM_FORMAT_BGR888:
2669 case DRM_FORMAT_XRGB8888:
2670 case DRM_FORMAT_XBGR8888:
2671 case DRM_FORMAT_RGBX8888:
2672 case DRM_FORMAT_BGRX8888:
2673 case DRM_FORMAT_ARGB8888:
2674 case DRM_FORMAT_ABGR8888:
2675 case DRM_FORMAT_RGBA8888:
2676 case DRM_FORMAT_BGRA8888:
2677 case DRM_FORMAT_XRGB2101010:
2678 case DRM_FORMAT_XBGR2101010:
2679 case DRM_FORMAT_RGBX1010102:
2680 case DRM_FORMAT_BGRX1010102:
2681 case DRM_FORMAT_ARGB2101010:
2682 case DRM_FORMAT_ABGR2101010:
2683 case DRM_FORMAT_RGBA1010102:
2684 case DRM_FORMAT_BGRA1010102:
2685 case DRM_FORMAT_YUYV:
2686 case DRM_FORMAT_YVYU:
2687 case DRM_FORMAT_UYVY:
2688 case DRM_FORMAT_VYUY:
2689 case DRM_FORMAT_AYUV:
2690 case DRM_FORMAT_NV12:
2691 case DRM_FORMAT_NV21:
2692 case DRM_FORMAT_NV16:
2693 case DRM_FORMAT_NV61:
2694 case DRM_FORMAT_NV24:
2695 case DRM_FORMAT_NV42:
2696 case DRM_FORMAT_YUV410:
2697 case DRM_FORMAT_YVU410:
2698 case DRM_FORMAT_YUV411:
2699 case DRM_FORMAT_YVU411:
2700 case DRM_FORMAT_YUV420:
2701 case DRM_FORMAT_YVU420:
2702 case DRM_FORMAT_YUV422:
2703 case DRM_FORMAT_YVU422:
2704 case DRM_FORMAT_YUV444:
2705 case DRM_FORMAT_YVU444:
2708 DRM_DEBUG_KMS("invalid pixel format %s\n",
2709 drm_get_format_name(r->pixel_format));
2714 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
2716 int ret, hsub, vsub, num_planes, i;
2718 ret = format_check(r);
2720 DRM_DEBUG_KMS("bad framebuffer format %s\n",
2721 drm_get_format_name(r->pixel_format));
2725 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
2726 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
2727 num_planes = drm_format_num_planes(r->pixel_format);
2729 if (r->width == 0 || r->width % hsub) {
2730 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->height);
2734 if (r->height == 0 || r->height % vsub) {
2735 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
2739 for (i = 0; i < num_planes; i++) {
2740 unsigned int width = r->width / (i != 0 ? hsub : 1);
2741 unsigned int height = r->height / (i != 0 ? vsub : 1);
2742 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
2744 if (!r->handles[i]) {
2745 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
2749 if ((uint64_t) width * cpp > UINT_MAX)
2752 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
2755 if (r->pitches[i] < width * cpp) {
2756 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
2765 * drm_mode_addfb2 - add an FB to the graphics configuration
2766 * @dev: drm device for the ioctl
2767 * @data: data pointer for the ioctl
2768 * @file_priv: drm file for the ioctl call
2770 * Add a new FB to the specified CRTC, given a user request with format. This is
2771 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
2772 * and uses fourcc codes as pixel format specifiers.
2774 * Called by the user via ioctl.
2777 * Zero on success, errno on failure.
2779 int drm_mode_addfb2(struct drm_device *dev,
2780 void *data, struct drm_file *file_priv)
2782 struct drm_mode_fb_cmd2 *r = data;
2783 struct drm_mode_config *config = &dev->mode_config;
2784 struct drm_framebuffer *fb;
2787 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2790 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
2791 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
2795 if ((config->min_width > r->width) || (r->width > config->max_width)) {
2796 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
2797 r->width, config->min_width, config->max_width);
2800 if ((config->min_height > r->height) || (r->height > config->max_height)) {
2801 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
2802 r->height, config->min_height, config->max_height);
2806 ret = framebuffer_check(r);
2810 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
2812 DRM_DEBUG_KMS("could not create framebuffer\n");
2816 mutex_lock(&file_priv->fbs_lock);
2817 r->fb_id = fb->base.id;
2818 list_add(&fb->filp_head, &file_priv->fbs);
2819 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2820 mutex_unlock(&file_priv->fbs_lock);
2827 * drm_mode_rmfb - remove an FB from the configuration
2828 * @dev: drm device for the ioctl
2829 * @data: data pointer for the ioctl
2830 * @file_priv: drm file for the ioctl call
2832 * Remove the FB specified by the user.
2834 * Called by the user via ioctl.
2837 * Zero on success, errno on failure.
2839 int drm_mode_rmfb(struct drm_device *dev,
2840 void *data, struct drm_file *file_priv)
2842 struct drm_framebuffer *fb = NULL;
2843 struct drm_framebuffer *fbl = NULL;
2844 uint32_t *id = data;
2847 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2850 mutex_lock(&file_priv->fbs_lock);
2851 mutex_lock(&dev->mode_config.fb_lock);
2852 fb = __drm_framebuffer_lookup(dev, *id);
2856 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
2862 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
2863 __drm_framebuffer_unregister(dev, fb);
2865 list_del_init(&fb->filp_head);
2866 mutex_unlock(&dev->mode_config.fb_lock);
2867 mutex_unlock(&file_priv->fbs_lock);
2869 drm_framebuffer_remove(fb);
2874 mutex_unlock(&dev->mode_config.fb_lock);
2875 mutex_unlock(&file_priv->fbs_lock);
2881 * drm_mode_getfb - get FB info
2882 * @dev: drm device for the ioctl
2883 * @data: data pointer for the ioctl
2884 * @file_priv: drm file for the ioctl call
2886 * Lookup the FB given its ID and return info about it.
2888 * Called by the user via ioctl.
2891 * Zero on success, errno on failure.
2893 int drm_mode_getfb(struct drm_device *dev,
2894 void *data, struct drm_file *file_priv)
2896 struct drm_mode_fb_cmd *r = data;
2897 struct drm_framebuffer *fb;
2900 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2903 fb = drm_framebuffer_lookup(dev, r->fb_id);
2907 r->height = fb->height;
2908 r->width = fb->width;
2909 r->depth = fb->depth;
2910 r->bpp = fb->bits_per_pixel;
2911 r->pitch = fb->pitches[0];
2912 if (fb->funcs->create_handle) {
2913 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
2914 drm_is_control_client(file_priv)) {
2915 ret = fb->funcs->create_handle(fb, file_priv,
2918 /* GET_FB() is an unprivileged ioctl so we must not
2919 * return a buffer-handle to non-master processes! For
2920 * backwards-compatibility reasons, we cannot make
2921 * GET_FB() privileged, so just return an invalid handle
2922 * for non-masters. */
2930 drm_framebuffer_unreference(fb);
2936 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
2937 * @dev: drm device for the ioctl
2938 * @data: data pointer for the ioctl
2939 * @file_priv: drm file for the ioctl call
2941 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
2942 * rectangle list. Generic userspace which does frontbuffer rendering must call
2943 * this ioctl to flush out the changes on manual-update display outputs, e.g.
2944 * usb display-link, mipi manual update panels or edp panel self refresh modes.
2946 * Modesetting drivers which always update the frontbuffer do not need to
2947 * implement the corresponding ->dirty framebuffer callback.
2949 * Called by the user via ioctl.
2952 * Zero on success, errno on failure.
2954 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
2955 void *data, struct drm_file *file_priv)
2957 struct drm_clip_rect __user *clips_ptr;
2958 struct drm_clip_rect *clips = NULL;
2959 struct drm_mode_fb_dirty_cmd *r = data;
2960 struct drm_framebuffer *fb;
2965 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2968 fb = drm_framebuffer_lookup(dev, r->fb_id);
2972 num_clips = r->num_clips;
2973 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
2975 if (!num_clips != !clips_ptr) {
2980 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
2982 /* If userspace annotates copy, clips must come in pairs */
2983 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
2988 if (num_clips && clips_ptr) {
2989 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
2993 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
2999 ret = copy_from_user(clips, clips_ptr,
3000 num_clips * sizeof(*clips));
3007 if (fb->funcs->dirty) {
3008 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3017 drm_framebuffer_unreference(fb);
3024 * drm_fb_release - remove and free the FBs on this file
3025 * @priv: drm file for the ioctl
3027 * Destroy all the FBs associated with @filp.
3029 * Called by the user via ioctl.
3032 * Zero on success, errno on failure.
3034 void drm_fb_release(struct drm_file *priv)
3036 struct drm_device *dev = priv->minor->dev;
3037 struct drm_framebuffer *fb, *tfb;
3039 mutex_lock(&priv->fbs_lock);
3040 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3042 mutex_lock(&dev->mode_config.fb_lock);
3043 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3044 __drm_framebuffer_unregister(dev, fb);
3045 mutex_unlock(&dev->mode_config.fb_lock);
3047 list_del_init(&fb->filp_head);
3049 /* This will also drop the fpriv->fbs reference. */
3050 drm_framebuffer_remove(fb);
3052 mutex_unlock(&priv->fbs_lock);
3056 * drm_property_create - create a new property type
3058 * @flags: flags specifying the property type
3059 * @name: name of the property
3060 * @num_values: number of pre-defined values
3062 * This creates a new generic drm property which can then be attached to a drm
3063 * object with drm_object_attach_property. The returned property object must be
3064 * freed with drm_property_destroy.
3067 * A pointer to the newly created property on success, NULL on failure.
3069 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3070 const char *name, int num_values)
3072 struct drm_property *property = NULL;
3075 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3080 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
3081 if (!property->values)
3085 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3089 property->flags = flags;
3090 property->num_values = num_values;
3091 INIT_LIST_HEAD(&property->enum_blob_list);
3094 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3095 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3098 list_add_tail(&property->head, &dev->mode_config.property_list);
3101 kfree(property->values);
3105 EXPORT_SYMBOL(drm_property_create);
3108 * drm_property_create - create a new enumeration property type
3110 * @flags: flags specifying the property type
3111 * @name: name of the property
3112 * @props: enumeration lists with property values
3113 * @num_values: number of pre-defined values
3115 * This creates a new generic drm property which can then be attached to a drm
3116 * object with drm_object_attach_property. The returned property object must be
3117 * freed with drm_property_destroy.
3119 * Userspace is only allowed to set one of the predefined values for enumeration
3123 * A pointer to the newly created property on success, NULL on failure.
3125 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3127 const struct drm_prop_enum_list *props,
3130 struct drm_property *property;
3133 flags |= DRM_MODE_PROP_ENUM;
3135 property = drm_property_create(dev, flags, name, num_values);
3139 for (i = 0; i < num_values; i++) {
3140 ret = drm_property_add_enum(property, i,
3144 drm_property_destroy(dev, property);
3151 EXPORT_SYMBOL(drm_property_create_enum);
3154 * drm_property_create - create a new bitmask property type
3156 * @flags: flags specifying the property type
3157 * @name: name of the property
3158 * @props: enumeration lists with property bitflags
3159 * @num_values: number of pre-defined values
3161 * This creates a new generic drm property which can then be attached to a drm
3162 * object with drm_object_attach_property. The returned property object must be
3163 * freed with drm_property_destroy.
3165 * Compared to plain enumeration properties userspace is allowed to set any
3166 * or'ed together combination of the predefined property bitflag values
3169 * A pointer to the newly created property on success, NULL on failure.
3171 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3172 int flags, const char *name,
3173 const struct drm_prop_enum_list *props,
3176 struct drm_property *property;
3179 flags |= DRM_MODE_PROP_BITMASK;
3181 property = drm_property_create(dev, flags, name, num_values);
3185 for (i = 0; i < num_values; i++) {
3186 ret = drm_property_add_enum(property, i,
3190 drm_property_destroy(dev, property);
3197 EXPORT_SYMBOL(drm_property_create_bitmask);
3200 * drm_property_create - create a new ranged property type
3202 * @flags: flags specifying the property type
3203 * @name: name of the property
3204 * @min: minimum value of the property
3205 * @max: maximum value of the property
3207 * This creates a new generic drm property which can then be attached to a drm
3208 * object with drm_object_attach_property. The returned property object must be
3209 * freed with drm_property_destroy.
3211 * Userspace is allowed to set any interger value in the (min, max) range
3215 * A pointer to the newly created property on success, NULL on failure.
3217 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3219 uint64_t min, uint64_t max)
3221 struct drm_property *property;
3223 flags |= DRM_MODE_PROP_RANGE;
3225 property = drm_property_create(dev, flags, name, 2);
3229 property->values[0] = min;
3230 property->values[1] = max;
3234 EXPORT_SYMBOL(drm_property_create_range);
3237 * drm_property_add_enum - add a possible value to an enumeration property
3238 * @property: enumeration property to change
3239 * @index: index of the new enumeration
3240 * @value: value of the new enumeration
3241 * @name: symbolic name of the new enumeration
3243 * This functions adds enumerations to a property.
3245 * It's use is deprecated, drivers should use one of the more specific helpers
3246 * to directly create the property with all enumerations already attached.
3249 * Zero on success, error code on failure.
3251 int drm_property_add_enum(struct drm_property *property, int index,
3252 uint64_t value, const char *name)
3254 struct drm_property_enum *prop_enum;
3256 if (!(property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)))
3260 * Bitmask enum properties have the additional constraint of values
3263 if ((property->flags & DRM_MODE_PROP_BITMASK) && (value > 63))
3266 if (!list_empty(&property->enum_blob_list)) {
3267 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3268 if (prop_enum->value == value) {
3269 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3270 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3276 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3280 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3281 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3282 prop_enum->value = value;
3284 property->values[index] = value;
3285 list_add_tail(&prop_enum->head, &property->enum_blob_list);
3288 EXPORT_SYMBOL(drm_property_add_enum);
3291 * drm_property_destroy - destroy a drm property
3293 * @property: property to destry
3295 * This function frees a property including any attached resources like
3296 * enumeration values.
3298 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3300 struct drm_property_enum *prop_enum, *pt;
3302 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
3303 list_del(&prop_enum->head);
3307 if (property->num_values)
3308 kfree(property->values);
3309 drm_mode_object_put(dev, &property->base);
3310 list_del(&property->head);
3313 EXPORT_SYMBOL(drm_property_destroy);
3316 * drm_object_attach_property - attach a property to a modeset object
3317 * @obj: drm modeset object
3318 * @property: property to attach
3319 * @init_val: initial value of the property
3321 * This attaches the given property to the modeset object with the given initial
3322 * value. Currently this function cannot fail since the properties are stored in
3323 * a statically sized array.
3325 void drm_object_attach_property(struct drm_mode_object *obj,
3326 struct drm_property *property,
3329 int count = obj->properties->count;
3331 if (count == DRM_OBJECT_MAX_PROPERTY) {
3332 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3333 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3334 "you see this message on the same object type.\n",
3339 obj->properties->ids[count] = property->base.id;
3340 obj->properties->values[count] = init_val;
3341 obj->properties->count++;
3343 EXPORT_SYMBOL(drm_object_attach_property);
3346 * drm_object_property_set_value - set the value of a property
3347 * @obj: drm mode object to set property value for
3348 * @property: property to set
3349 * @val: value the property should be set to
3351 * This functions sets a given property on a given object. This function only
3352 * changes the software state of the property, it does not call into the
3353 * driver's ->set_property callback.
3356 * Zero on success, error code on failure.
3358 int drm_object_property_set_value(struct drm_mode_object *obj,
3359 struct drm_property *property, uint64_t val)
3363 for (i = 0; i < obj->properties->count; i++) {
3364 if (obj->properties->ids[i] == property->base.id) {
3365 obj->properties->values[i] = val;
3372 EXPORT_SYMBOL(drm_object_property_set_value);
3375 * drm_object_property_get_value - retrieve the value of a property
3376 * @obj: drm mode object to get property value from
3377 * @property: property to retrieve
3378 * @val: storage for the property value
3380 * This function retrieves the softare state of the given property for the given
3381 * property. Since there is no driver callback to retrieve the current property
3382 * value this might be out of sync with the hardware, depending upon the driver
3386 * Zero on success, error code on failure.
3388 int drm_object_property_get_value(struct drm_mode_object *obj,
3389 struct drm_property *property, uint64_t *val)
3393 for (i = 0; i < obj->properties->count; i++) {
3394 if (obj->properties->ids[i] == property->base.id) {
3395 *val = obj->properties->values[i];
3402 EXPORT_SYMBOL(drm_object_property_get_value);
3405 * drm_mode_getproperty_ioctl - get the current value of a connector's property
3408 * @file_priv: DRM file info
3410 * This function retrieves the current value for an connectors's property.
3412 * Called by the user via ioctl.
3415 * Zero on success, errno on failure.
3417 int drm_mode_getproperty_ioctl(struct drm_device *dev,
3418 void *data, struct drm_file *file_priv)
3420 struct drm_mode_object *obj;
3421 struct drm_mode_get_property *out_resp = data;
3422 struct drm_property *property;
3425 int value_count = 0;
3428 struct drm_property_enum *prop_enum;
3429 struct drm_mode_property_enum __user *enum_ptr;
3430 struct drm_property_blob *prop_blob;
3431 uint32_t __user *blob_id_ptr;
3432 uint64_t __user *values_ptr;
3433 uint32_t __user *blob_length_ptr;
3435 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3438 drm_modeset_lock_all(dev);
3439 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
3444 property = obj_to_property(obj);
3446 if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) {
3447 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
3449 } else if (property->flags & DRM_MODE_PROP_BLOB) {
3450 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
3454 value_count = property->num_values;
3456 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
3457 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
3458 out_resp->flags = property->flags;
3460 if ((out_resp->count_values >= value_count) && value_count) {
3461 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
3462 for (i = 0; i < value_count; i++) {
3463 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
3469 out_resp->count_values = value_count;
3471 if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) {
3472 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
3474 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3475 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3477 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
3482 if (copy_to_user(&enum_ptr[copied].name,
3483 &prop_enum->name, DRM_PROP_NAME_LEN)) {
3490 out_resp->count_enum_blobs = enum_count;
3493 if (property->flags & DRM_MODE_PROP_BLOB) {
3494 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
3496 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr;
3497 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr;
3499 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
3500 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
3505 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
3513 out_resp->count_enum_blobs = blob_count;
3516 drm_modeset_unlock_all(dev);
3520 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
3523 struct drm_property_blob *blob;
3526 if (!length || !data)
3529 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
3533 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
3539 blob->length = length;
3541 memcpy(blob->data, data, length);
3543 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
3547 static void drm_property_destroy_blob(struct drm_device *dev,
3548 struct drm_property_blob *blob)
3550 drm_mode_object_put(dev, &blob->base);
3551 list_del(&blob->head);
3556 * drm_mode_getblob_ioctl - get the contents of a blob property value
3559 * @file_priv: DRM file info
3561 * This function retrieves the contents of a blob property. The value stored in
3562 * an object's blob property is just a normal modeset object id.
3564 * Called by the user via ioctl.
3567 * Zero on success, errno on failure.
3569 int drm_mode_getblob_ioctl(struct drm_device *dev,
3570 void *data, struct drm_file *file_priv)
3572 struct drm_mode_object *obj;
3573 struct drm_mode_get_blob *out_resp = data;
3574 struct drm_property_blob *blob;
3576 void __user *blob_ptr;
3578 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3581 drm_modeset_lock_all(dev);
3582 obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
3587 blob = obj_to_blob(obj);
3589 if (out_resp->length == blob->length) {
3590 blob_ptr = (void __user *)(unsigned long)out_resp->data;
3591 if (copy_to_user(blob_ptr, blob->data, blob->length)){
3596 out_resp->length = blob->length;
3599 drm_modeset_unlock_all(dev);
3604 * drm_mode_connector_update_edid_property - update the edid property of a connector
3605 * @connector: drm connector
3606 * @edid: new value of the edid property
3608 * This function creates a new blob modeset object and assigns its id to the
3609 * connector's edid property.
3612 * Zero on success, errno on failure.
3614 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
3617 struct drm_device *dev = connector->dev;
3620 if (connector->edid_blob_ptr)
3621 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
3623 /* Delete edid, when there is none. */
3625 connector->edid_blob_ptr = NULL;
3626 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
3630 size = EDID_LENGTH * (1 + edid->extensions);
3631 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
3633 if (!connector->edid_blob_ptr)
3636 ret = drm_object_property_set_value(&connector->base,
3637 dev->mode_config.edid_property,
3638 connector->edid_blob_ptr->base.id);
3642 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
3644 static bool drm_property_change_is_valid(struct drm_property *property,
3647 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
3649 if (property->flags & DRM_MODE_PROP_RANGE) {
3650 if (value < property->values[0] || value > property->values[1])
3653 } else if (property->flags & DRM_MODE_PROP_BITMASK) {
3655 uint64_t valid_mask = 0;
3656 for (i = 0; i < property->num_values; i++)
3657 valid_mask |= (1ULL << property->values[i]);
3658 return !(value & ~valid_mask);
3659 } else if (property->flags & DRM_MODE_PROP_BLOB) {
3660 /* Only the driver knows */
3664 for (i = 0; i < property->num_values; i++)
3665 if (property->values[i] == value)
3672 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
3675 * @file_priv: DRM file info
3677 * This function sets the current value for a connectors's property. It also
3678 * calls into a driver's ->set_property callback to update the hardware state
3680 * Called by the user via ioctl.
3683 * Zero on success, errno on failure.
3685 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
3686 void *data, struct drm_file *file_priv)
3688 struct drm_mode_connector_set_property *conn_set_prop = data;
3689 struct drm_mode_obj_set_property obj_set_prop = {
3690 .value = conn_set_prop->value,
3691 .prop_id = conn_set_prop->prop_id,
3692 .obj_id = conn_set_prop->connector_id,
3693 .obj_type = DRM_MODE_OBJECT_CONNECTOR
3696 /* It does all the locking and checking we need */
3697 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
3700 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
3701 struct drm_property *property,
3705 struct drm_connector *connector = obj_to_connector(obj);
3707 /* Do DPMS ourselves */
3708 if (property == connector->dev->mode_config.dpms_property) {
3709 if (connector->funcs->dpms)
3710 (*connector->funcs->dpms)(connector, (int)value);
3712 } else if (connector->funcs->set_property)
3713 ret = connector->funcs->set_property(connector, property, value);
3715 /* store the property value if successful */
3717 drm_object_property_set_value(&connector->base, property, value);
3721 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
3722 struct drm_property *property,
3726 struct drm_crtc *crtc = obj_to_crtc(obj);
3728 if (crtc->funcs->set_property)
3729 ret = crtc->funcs->set_property(crtc, property, value);
3731 drm_object_property_set_value(obj, property, value);
3736 static int drm_mode_plane_set_obj_prop(struct drm_mode_object *obj,
3737 struct drm_property *property,
3741 struct drm_plane *plane = obj_to_plane(obj);
3743 if (plane->funcs->set_property)
3744 ret = plane->funcs->set_property(plane, property, value);
3746 drm_object_property_set_value(obj, property, value);
3752 * drm_mode_getproperty_ioctl - get the current value of a object's property
3755 * @file_priv: DRM file info
3757 * This function retrieves the current value for an object's property. Compared
3758 * to the connector specific ioctl this one is extended to also work on crtc and
3761 * Called by the user via ioctl.
3764 * Zero on success, errno on failure.
3766 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
3767 struct drm_file *file_priv)
3769 struct drm_mode_obj_get_properties *arg = data;
3770 struct drm_mode_object *obj;
3774 int props_count = 0;
3775 uint32_t __user *props_ptr;
3776 uint64_t __user *prop_values_ptr;
3778 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3781 drm_modeset_lock_all(dev);
3783 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
3788 if (!obj->properties) {
3793 props_count = obj->properties->count;
3795 /* This ioctl is called twice, once to determine how much space is
3796 * needed, and the 2nd time to fill it. */
3797 if ((arg->count_props >= props_count) && props_count) {
3799 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
3800 prop_values_ptr = (uint64_t __user *)(unsigned long)
3801 (arg->prop_values_ptr);
3802 for (i = 0; i < props_count; i++) {
3803 if (put_user(obj->properties->ids[i],
3804 props_ptr + copied)) {
3808 if (put_user(obj->properties->values[i],
3809 prop_values_ptr + copied)) {
3816 arg->count_props = props_count;
3818 drm_modeset_unlock_all(dev);
3823 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
3826 * @file_priv: DRM file info
3828 * This function sets the current value for an object's property. It also calls
3829 * into a driver's ->set_property callback to update the hardware state.
3830 * Compared to the connector specific ioctl this one is extended to also work on
3831 * crtc and plane objects.
3833 * Called by the user via ioctl.
3836 * Zero on success, errno on failure.
3838 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
3839 struct drm_file *file_priv)
3841 struct drm_mode_obj_set_property *arg = data;
3842 struct drm_mode_object *arg_obj;
3843 struct drm_mode_object *prop_obj;
3844 struct drm_property *property;
3848 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3851 drm_modeset_lock_all(dev);
3853 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
3858 if (!arg_obj->properties)
3861 for (i = 0; i < arg_obj->properties->count; i++)
3862 if (arg_obj->properties->ids[i] == arg->prop_id)
3865 if (i == arg_obj->properties->count)
3868 prop_obj = drm_mode_object_find(dev, arg->prop_id,
3869 DRM_MODE_OBJECT_PROPERTY);
3874 property = obj_to_property(prop_obj);
3876 if (!drm_property_change_is_valid(property, arg->value))
3879 switch (arg_obj->type) {
3880 case DRM_MODE_OBJECT_CONNECTOR:
3881 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
3884 case DRM_MODE_OBJECT_CRTC:
3885 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
3887 case DRM_MODE_OBJECT_PLANE:
3888 ret = drm_mode_plane_set_obj_prop(arg_obj, property, arg->value);
3893 drm_modeset_unlock_all(dev);
3898 * drm_mode_connector_attach_encoder - attach a connector to an encoder
3899 * @connector: connector to attach
3900 * @encoder: encoder to attach @connector to
3902 * This function links up a connector to an encoder. Note that the routing
3903 * restrictions between encoders and crtcs are exposed to userspace through the
3904 * possible_clones and possible_crtcs bitmasks.
3907 * Zero on success, errno on failure.
3909 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
3910 struct drm_encoder *encoder)
3914 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
3915 if (connector->encoder_ids[i] == 0) {
3916 connector->encoder_ids[i] = encoder->base.id;
3922 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
3925 * drm_mode_crtc_set_gamma_size - set the gamma table size
3926 * @crtc: CRTC to set the gamma table size for
3927 * @gamma_size: size of the gamma table
3929 * Drivers which support gamma tables should set this to the supported gamma
3930 * table size when initializing the CRTC. Currently the drm core only supports a
3931 * fixed gamma table size.
3934 * Zero on success, errno on failure.
3936 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
3939 crtc->gamma_size = gamma_size;
3941 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
3942 if (!crtc->gamma_store) {
3943 crtc->gamma_size = 0;
3949 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
3952 * drm_mode_gamma_set_ioctl - set the gamma table
3955 * @file_priv: DRM file info
3957 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
3958 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
3960 * Called by the user via ioctl.
3963 * Zero on success, errno on failure.
3965 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
3966 void *data, struct drm_file *file_priv)
3968 struct drm_mode_crtc_lut *crtc_lut = data;
3969 struct drm_mode_object *obj;
3970 struct drm_crtc *crtc;
3971 void *r_base, *g_base, *b_base;
3975 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3978 drm_modeset_lock_all(dev);
3979 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
3984 crtc = obj_to_crtc(obj);
3986 if (crtc->funcs->gamma_set == NULL) {
3991 /* memcpy into gamma store */
3992 if (crtc_lut->gamma_size != crtc->gamma_size) {
3997 size = crtc_lut->gamma_size * (sizeof(uint16_t));
3998 r_base = crtc->gamma_store;
3999 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4004 g_base = r_base + size;
4005 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4010 b_base = g_base + size;
4011 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4016 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
4019 drm_modeset_unlock_all(dev);
4025 * drm_mode_gamma_get_ioctl - get the gamma table
4028 * @file_priv: DRM file info
4030 * Copy the current gamma table into the storage provided. This also provides
4031 * the gamma table size the driver expects, which can be used to size the
4032 * allocated storage.
4034 * Called by the user via ioctl.
4037 * Zero on success, errno on failure.
4039 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4040 void *data, struct drm_file *file_priv)
4042 struct drm_mode_crtc_lut *crtc_lut = data;
4043 struct drm_mode_object *obj;
4044 struct drm_crtc *crtc;
4045 void *r_base, *g_base, *b_base;
4049 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4052 drm_modeset_lock_all(dev);
4053 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
4058 crtc = obj_to_crtc(obj);
4060 /* memcpy into gamma store */
4061 if (crtc_lut->gamma_size != crtc->gamma_size) {
4066 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4067 r_base = crtc->gamma_store;
4068 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4073 g_base = r_base + size;
4074 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4079 b_base = g_base + size;
4080 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4085 drm_modeset_unlock_all(dev);
4090 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4093 * @file_priv: DRM file info
4095 * This schedules an asynchronous update on a given CRTC, called page flip.
4096 * Optionally a drm event is generated to signal the completion of the event.
4097 * Generic drivers cannot assume that a pageflip with changed framebuffer
4098 * properties (including driver specific metadata like tiling layout) will work,
4099 * but some drivers support e.g. pixel format changes through the pageflip
4102 * Called by the user via ioctl.
4105 * Zero on success, errno on failure.
4107 int drm_mode_page_flip_ioctl(struct drm_device *dev,
4108 void *data, struct drm_file *file_priv)
4110 struct drm_mode_crtc_page_flip *page_flip = data;
4111 struct drm_mode_object *obj;
4112 struct drm_crtc *crtc;
4113 struct drm_framebuffer *fb = NULL, *old_fb = NULL;
4114 struct drm_pending_vblank_event *e = NULL;
4115 unsigned long flags;
4118 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4119 page_flip->reserved != 0)
4122 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4125 obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC);
4128 crtc = obj_to_crtc(obj);
4130 mutex_lock(&crtc->mutex);
4131 if (crtc->fb == NULL) {
4132 /* The framebuffer is currently unbound, presumably
4133 * due to a hotplug event, that userspace has not
4140 if (crtc->funcs->page_flip == NULL)
4143 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
4149 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4153 if (crtc->fb->pixel_format != fb->pixel_format) {
4154 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4159 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4161 spin_lock_irqsave(&dev->event_lock, flags);
4162 if (file_priv->event_space < sizeof e->event) {
4163 spin_unlock_irqrestore(&dev->event_lock, flags);
4166 file_priv->event_space -= sizeof e->event;
4167 spin_unlock_irqrestore(&dev->event_lock, flags);
4169 e = kzalloc(sizeof *e, GFP_KERNEL);
4171 spin_lock_irqsave(&dev->event_lock, flags);
4172 file_priv->event_space += sizeof e->event;
4173 spin_unlock_irqrestore(&dev->event_lock, flags);
4177 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
4178 e->event.base.length = sizeof e->event;
4179 e->event.user_data = page_flip->user_data;
4180 e->base.event = &e->event.base;
4181 e->base.file_priv = file_priv;
4183 (void (*) (struct drm_pending_event *)) kfree;
4187 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
4189 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4190 spin_lock_irqsave(&dev->event_lock, flags);
4191 file_priv->event_space += sizeof e->event;
4192 spin_unlock_irqrestore(&dev->event_lock, flags);
4195 /* Keep the old fb, don't unref it. */
4199 * Warn if the driver hasn't properly updated the crtc->fb
4200 * field to reflect that the new framebuffer is now used.
4201 * Failing to do so will screw with the reference counting
4204 WARN_ON(crtc->fb != fb);
4205 /* Unref only the old framebuffer. */
4211 drm_framebuffer_unreference(fb);
4213 drm_framebuffer_unreference(old_fb);
4214 mutex_unlock(&crtc->mutex);
4220 * drm_mode_config_reset - call ->reset callbacks
4223 * This functions calls all the crtc's, encoder's and connector's ->reset
4224 * callback. Drivers can use this in e.g. their driver load or resume code to
4225 * reset hardware and software state.
4227 void drm_mode_config_reset(struct drm_device *dev)
4229 struct drm_crtc *crtc;
4230 struct drm_encoder *encoder;
4231 struct drm_connector *connector;
4233 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4234 if (crtc->funcs->reset)
4235 crtc->funcs->reset(crtc);
4237 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4238 if (encoder->funcs->reset)
4239 encoder->funcs->reset(encoder);
4241 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4242 connector->status = connector_status_unknown;
4244 if (connector->funcs->reset)
4245 connector->funcs->reset(connector);
4248 EXPORT_SYMBOL(drm_mode_config_reset);
4251 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4254 * @file_priv: DRM file info
4256 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4257 * TTM or something else entirely) and returns the resulting buffer handle. This
4258 * handle can then be wrapped up into a framebuffer modeset object.
4260 * Note that userspace is not allowed to use such objects for render
4261 * acceleration - drivers must create their own private ioctls for such a use
4264 * Called by the user via ioctl.
4267 * Zero on success, errno on failure.
4269 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
4270 void *data, struct drm_file *file_priv)
4272 struct drm_mode_create_dumb *args = data;
4273 u32 cpp, stride, size;
4275 if (!dev->driver->dumb_create)
4277 if (!args->width || !args->height || !args->bpp)
4280 /* overflow checks for 32bit size calculations */
4281 cpp = DIV_ROUND_UP(args->bpp, 8);
4282 if (cpp > 0xffffffffU / args->width)
4284 stride = cpp * args->width;
4285 if (args->height > 0xffffffffU / stride)
4288 /* test for wrap-around */
4289 size = args->height * stride;
4290 if (PAGE_ALIGN(size) == 0)
4293 return dev->driver->dumb_create(file_priv, dev, args);
4297 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4300 * @file_priv: DRM file info
4302 * Allocate an offset in the drm device node's address space to be able to
4303 * memory map a dumb buffer.
4305 * Called by the user via ioctl.
4308 * Zero on success, errno on failure.
4310 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
4311 void *data, struct drm_file *file_priv)
4313 struct drm_mode_map_dumb *args = data;
4315 /* call driver ioctl to get mmap offset */
4316 if (!dev->driver->dumb_map_offset)
4319 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
4323 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4326 * @file_priv: DRM file info
4328 * This destroys the userspace handle for the given dumb backing storage buffer.
4329 * Since buffer objects must be reference counted in the kernel a buffer object
4330 * won't be immediately freed if a framebuffer modeset object still uses it.
4332 * Called by the user via ioctl.
4335 * Zero on success, errno on failure.
4337 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
4338 void *data, struct drm_file *file_priv)
4340 struct drm_mode_destroy_dumb *args = data;
4342 if (!dev->driver->dumb_destroy)
4345 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
4349 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4350 * @format: pixel format (DRM_FORMAT_*)
4351 * @depth: storage for the depth value
4352 * @bpp: storage for the bpp value
4354 * This only supports RGB formats here for compat with code that doesn't use
4355 * pixel formats directly yet.
4357 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
4362 case DRM_FORMAT_RGB332:
4363 case DRM_FORMAT_BGR233:
4367 case DRM_FORMAT_XRGB1555:
4368 case DRM_FORMAT_XBGR1555:
4369 case DRM_FORMAT_RGBX5551:
4370 case DRM_FORMAT_BGRX5551:
4371 case DRM_FORMAT_ARGB1555:
4372 case DRM_FORMAT_ABGR1555:
4373 case DRM_FORMAT_RGBA5551:
4374 case DRM_FORMAT_BGRA5551:
4378 case DRM_FORMAT_RGB565:
4379 case DRM_FORMAT_BGR565:
4383 case DRM_FORMAT_RGB888:
4384 case DRM_FORMAT_BGR888:
4388 case DRM_FORMAT_XRGB8888:
4389 case DRM_FORMAT_XBGR8888:
4390 case DRM_FORMAT_RGBX8888:
4391 case DRM_FORMAT_BGRX8888:
4395 case DRM_FORMAT_XRGB2101010:
4396 case DRM_FORMAT_XBGR2101010:
4397 case DRM_FORMAT_RGBX1010102:
4398 case DRM_FORMAT_BGRX1010102:
4399 case DRM_FORMAT_ARGB2101010:
4400 case DRM_FORMAT_ABGR2101010:
4401 case DRM_FORMAT_RGBA1010102:
4402 case DRM_FORMAT_BGRA1010102:
4406 case DRM_FORMAT_ARGB8888:
4407 case DRM_FORMAT_ABGR8888:
4408 case DRM_FORMAT_RGBA8888:
4409 case DRM_FORMAT_BGRA8888:
4414 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4415 drm_get_format_name(format));
4421 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
4424 * drm_format_num_planes - get the number of planes for format
4425 * @format: pixel format (DRM_FORMAT_*)
4428 * The number of planes used by the specified pixel format.
4430 int drm_format_num_planes(uint32_t format)
4433 case DRM_FORMAT_YUV410:
4434 case DRM_FORMAT_YVU410:
4435 case DRM_FORMAT_YUV411:
4436 case DRM_FORMAT_YVU411:
4437 case DRM_FORMAT_YUV420:
4438 case DRM_FORMAT_YVU420:
4439 case DRM_FORMAT_YUV422:
4440 case DRM_FORMAT_YVU422:
4441 case DRM_FORMAT_YUV444:
4442 case DRM_FORMAT_YVU444:
4444 case DRM_FORMAT_NV12:
4445 case DRM_FORMAT_NV21:
4446 case DRM_FORMAT_NV16:
4447 case DRM_FORMAT_NV61:
4448 case DRM_FORMAT_NV24:
4449 case DRM_FORMAT_NV42:
4455 EXPORT_SYMBOL(drm_format_num_planes);
4458 * drm_format_plane_cpp - determine the bytes per pixel value
4459 * @format: pixel format (DRM_FORMAT_*)
4460 * @plane: plane index
4463 * The bytes per pixel value for the specified plane.
4465 int drm_format_plane_cpp(uint32_t format, int plane)
4470 if (plane >= drm_format_num_planes(format))
4474 case DRM_FORMAT_YUYV:
4475 case DRM_FORMAT_YVYU:
4476 case DRM_FORMAT_UYVY:
4477 case DRM_FORMAT_VYUY:
4479 case DRM_FORMAT_NV12:
4480 case DRM_FORMAT_NV21:
4481 case DRM_FORMAT_NV16:
4482 case DRM_FORMAT_NV61:
4483 case DRM_FORMAT_NV24:
4484 case DRM_FORMAT_NV42:
4485 return plane ? 2 : 1;
4486 case DRM_FORMAT_YUV410:
4487 case DRM_FORMAT_YVU410:
4488 case DRM_FORMAT_YUV411:
4489 case DRM_FORMAT_YVU411:
4490 case DRM_FORMAT_YUV420:
4491 case DRM_FORMAT_YVU420:
4492 case DRM_FORMAT_YUV422:
4493 case DRM_FORMAT_YVU422:
4494 case DRM_FORMAT_YUV444:
4495 case DRM_FORMAT_YVU444:
4498 drm_fb_get_bpp_depth(format, &depth, &bpp);
4502 EXPORT_SYMBOL(drm_format_plane_cpp);
4505 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
4506 * @format: pixel format (DRM_FORMAT_*)
4509 * The horizontal chroma subsampling factor for the
4510 * specified pixel format.
4512 int drm_format_horz_chroma_subsampling(uint32_t format)
4515 case DRM_FORMAT_YUV411:
4516 case DRM_FORMAT_YVU411:
4517 case DRM_FORMAT_YUV410:
4518 case DRM_FORMAT_YVU410:
4520 case DRM_FORMAT_YUYV:
4521 case DRM_FORMAT_YVYU:
4522 case DRM_FORMAT_UYVY:
4523 case DRM_FORMAT_VYUY:
4524 case DRM_FORMAT_NV12:
4525 case DRM_FORMAT_NV21:
4526 case DRM_FORMAT_NV16:
4527 case DRM_FORMAT_NV61:
4528 case DRM_FORMAT_YUV422:
4529 case DRM_FORMAT_YVU422:
4530 case DRM_FORMAT_YUV420:
4531 case DRM_FORMAT_YVU420:
4537 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
4540 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
4541 * @format: pixel format (DRM_FORMAT_*)
4544 * The vertical chroma subsampling factor for the
4545 * specified pixel format.
4547 int drm_format_vert_chroma_subsampling(uint32_t format)
4550 case DRM_FORMAT_YUV410:
4551 case DRM_FORMAT_YVU410:
4553 case DRM_FORMAT_YUV420:
4554 case DRM_FORMAT_YVU420:
4555 case DRM_FORMAT_NV12:
4556 case DRM_FORMAT_NV21:
4562 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
4565 * drm_mode_config_init - initialize DRM mode_configuration structure
4568 * Initialize @dev's mode_config structure, used for tracking the graphics
4569 * configuration of @dev.
4571 * Since this initializes the modeset locks, no locking is possible. Which is no
4572 * problem, since this should happen single threaded at init time. It is the
4573 * driver's problem to ensure this guarantee.
4576 void drm_mode_config_init(struct drm_device *dev)
4578 mutex_init(&dev->mode_config.mutex);
4579 mutex_init(&dev->mode_config.idr_mutex);
4580 mutex_init(&dev->mode_config.fb_lock);
4581 INIT_LIST_HEAD(&dev->mode_config.fb_list);
4582 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
4583 INIT_LIST_HEAD(&dev->mode_config.connector_list);
4584 INIT_LIST_HEAD(&dev->mode_config.bridge_list);
4585 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
4586 INIT_LIST_HEAD(&dev->mode_config.property_list);
4587 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
4588 INIT_LIST_HEAD(&dev->mode_config.plane_list);
4589 idr_init(&dev->mode_config.crtc_idr);
4591 drm_modeset_lock_all(dev);
4592 drm_mode_create_standard_connector_properties(dev);
4593 drm_mode_create_standard_plane_properties(dev);
4594 drm_modeset_unlock_all(dev);
4596 /* Just to be sure */
4597 dev->mode_config.num_fb = 0;
4598 dev->mode_config.num_connector = 0;
4599 dev->mode_config.num_crtc = 0;
4600 dev->mode_config.num_encoder = 0;
4601 dev->mode_config.num_overlay_plane = 0;
4602 dev->mode_config.num_total_plane = 0;
4604 EXPORT_SYMBOL(drm_mode_config_init);
4607 * drm_mode_config_cleanup - free up DRM mode_config info
4610 * Free up all the connectors and CRTCs associated with this DRM device, then
4611 * free up the framebuffers and associated buffer objects.
4613 * Note that since this /should/ happen single-threaded at driver/device
4614 * teardown time, no locking is required. It's the driver's job to ensure that
4615 * this guarantee actually holds true.
4617 * FIXME: cleanup any dangling user buffer objects too
4619 void drm_mode_config_cleanup(struct drm_device *dev)
4621 struct drm_connector *connector, *ot;
4622 struct drm_crtc *crtc, *ct;
4623 struct drm_encoder *encoder, *enct;
4624 struct drm_bridge *bridge, *brt;
4625 struct drm_framebuffer *fb, *fbt;
4626 struct drm_property *property, *pt;
4627 struct drm_property_blob *blob, *bt;
4628 struct drm_plane *plane, *plt;
4630 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
4632 encoder->funcs->destroy(encoder);
4635 list_for_each_entry_safe(bridge, brt,
4636 &dev->mode_config.bridge_list, head) {
4637 bridge->funcs->destroy(bridge);
4640 list_for_each_entry_safe(connector, ot,
4641 &dev->mode_config.connector_list, head) {
4642 connector->funcs->destroy(connector);
4645 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
4647 drm_property_destroy(dev, property);
4650 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
4652 drm_property_destroy_blob(dev, blob);
4656 * Single-threaded teardown context, so it's not required to grab the
4657 * fb_lock to protect against concurrent fb_list access. Contrary, it
4658 * would actually deadlock with the drm_framebuffer_cleanup function.
4660 * Also, if there are any framebuffers left, that's a driver leak now,
4661 * so politely WARN about this.
4663 WARN_ON(!list_empty(&dev->mode_config.fb_list));
4664 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
4665 drm_framebuffer_remove(fb);
4668 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
4670 plane->funcs->destroy(plane);
4673 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
4674 crtc->funcs->destroy(crtc);
4677 idr_destroy(&dev->mode_config.crtc_idr);
4679 EXPORT_SYMBOL(drm_mode_config_cleanup);