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" },
230 { DRM_MODE_ENCODER_DPMST, "DP MST" },
233 static const struct drm_prop_enum_list drm_subpixel_enum_list[] =
235 { SubPixelUnknown, "Unknown" },
236 { SubPixelHorizontalRGB, "Horizontal RGB" },
237 { SubPixelHorizontalBGR, "Horizontal BGR" },
238 { SubPixelVerticalRGB, "Vertical RGB" },
239 { SubPixelVerticalBGR, "Vertical BGR" },
240 { SubPixelNone, "None" },
243 void drm_connector_ida_init(void)
247 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
248 ida_init(&drm_connector_enum_list[i].ida);
251 void drm_connector_ida_destroy(void)
255 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
256 ida_destroy(&drm_connector_enum_list[i].ida);
260 * drm_get_connector_status_name - return a string for connector status
261 * @status: connector status to compute name of
263 * In contrast to the other drm_get_*_name functions this one here returns a
264 * const pointer and hence is threadsafe.
266 const char *drm_get_connector_status_name(enum drm_connector_status status)
268 if (status == connector_status_connected)
270 else if (status == connector_status_disconnected)
271 return "disconnected";
275 EXPORT_SYMBOL(drm_get_connector_status_name);
278 * drm_get_subpixel_order_name - return a string for a given subpixel enum
279 * @order: enum of subpixel_order
281 * Note you could abuse this and return something out of bounds, but that
282 * would be a caller error. No unscrubbed user data should make it here.
284 const char *drm_get_subpixel_order_name(enum subpixel_order order)
286 return drm_subpixel_enum_list[order].name;
288 EXPORT_SYMBOL(drm_get_subpixel_order_name);
290 static char printable_char(int c)
292 return isascii(c) && isprint(c) ? c : '?';
296 * drm_get_format_name - return a string for drm fourcc format
297 * @format: format to compute name of
299 * Note that the buffer used by this function is globally shared and owned by
300 * the function itself.
302 * FIXME: This isn't really multithreading safe.
304 const char *drm_get_format_name(uint32_t format)
308 snprintf(buf, sizeof(buf),
309 "%c%c%c%c %s-endian (0x%08x)",
310 printable_char(format & 0xff),
311 printable_char((format >> 8) & 0xff),
312 printable_char((format >> 16) & 0xff),
313 printable_char((format >> 24) & 0x7f),
314 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
319 EXPORT_SYMBOL(drm_get_format_name);
322 * drm_mode_object_get - allocate a new modeset identifier
324 * @obj: object pointer, used to generate unique ID
325 * @obj_type: object type
327 * Create a unique identifier based on @ptr in @dev's identifier space. Used
328 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
329 * modeset identifiers are _not_ reference counted. Hence don't use this for
330 * reference counted modeset objects like framebuffers.
333 * New unique (relative to other objects in @dev) integer identifier for the
336 int drm_mode_object_get(struct drm_device *dev,
337 struct drm_mode_object *obj, uint32_t obj_type)
341 mutex_lock(&dev->mode_config.idr_mutex);
342 ret = idr_alloc(&dev->mode_config.crtc_idr, obj, 1, 0, GFP_KERNEL);
345 * Set up the object linking under the protection of the idr
346 * lock so that other users can't see inconsistent state.
349 obj->type = obj_type;
351 mutex_unlock(&dev->mode_config.idr_mutex);
353 return ret < 0 ? ret : 0;
357 * drm_mode_object_put - free a modeset identifer
359 * @object: object to free
361 * Free @id from @dev's unique identifier pool. Note that despite the _get
362 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
363 * for reference counted modeset objects like framebuffers.
365 void drm_mode_object_put(struct drm_device *dev,
366 struct drm_mode_object *object)
368 mutex_lock(&dev->mode_config.idr_mutex);
369 idr_remove(&dev->mode_config.crtc_idr, object->id);
370 mutex_unlock(&dev->mode_config.idr_mutex);
374 * drm_mode_object_find - look up a drm object with static lifetime
376 * @id: id of the mode object
377 * @type: type of the mode object
379 * Note that framebuffers cannot be looked up with this functions - since those
380 * are reference counted, they need special treatment.
382 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
383 uint32_t id, uint32_t type)
385 struct drm_mode_object *obj = NULL;
387 /* Framebuffers are reference counted and need their own lookup
389 WARN_ON(type == DRM_MODE_OBJECT_FB);
391 mutex_lock(&dev->mode_config.idr_mutex);
392 obj = idr_find(&dev->mode_config.crtc_idr, id);
393 if (!obj || (obj->type != type) || (obj->id != id))
395 mutex_unlock(&dev->mode_config.idr_mutex);
399 EXPORT_SYMBOL(drm_mode_object_find);
402 * drm_framebuffer_init - initialize a framebuffer
404 * @fb: framebuffer to be initialized
405 * @funcs: ... with these functions
407 * Allocates an ID for the framebuffer's parent mode object, sets its mode
408 * functions & device file and adds it to the master fd list.
411 * This functions publishes the fb and makes it available for concurrent access
412 * by other users. Which means by this point the fb _must_ be fully set up -
413 * since all the fb attributes are invariant over its lifetime, no further
414 * locking but only correct reference counting is required.
417 * Zero on success, error code on failure.
419 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
420 const struct drm_framebuffer_funcs *funcs)
424 mutex_lock(&dev->mode_config.fb_lock);
425 kref_init(&fb->refcount);
426 INIT_LIST_HEAD(&fb->filp_head);
430 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
434 /* Grab the idr reference. */
435 drm_framebuffer_reference(fb);
437 dev->mode_config.num_fb++;
438 list_add(&fb->head, &dev->mode_config.fb_list);
440 mutex_unlock(&dev->mode_config.fb_lock);
444 EXPORT_SYMBOL(drm_framebuffer_init);
446 static void drm_framebuffer_free(struct kref *kref)
448 struct drm_framebuffer *fb =
449 container_of(kref, struct drm_framebuffer, refcount);
450 fb->funcs->destroy(fb);
453 static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
456 struct drm_mode_object *obj = NULL;
457 struct drm_framebuffer *fb;
459 mutex_lock(&dev->mode_config.idr_mutex);
460 obj = idr_find(&dev->mode_config.crtc_idr, id);
461 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
465 mutex_unlock(&dev->mode_config.idr_mutex);
471 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
473 * @id: id of the fb object
475 * If successful, this grabs an additional reference to the framebuffer -
476 * callers need to make sure to eventually unreference the returned framebuffer
477 * again, using @drm_framebuffer_unreference.
479 struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
482 struct drm_framebuffer *fb;
484 mutex_lock(&dev->mode_config.fb_lock);
485 fb = __drm_framebuffer_lookup(dev, id);
487 drm_framebuffer_reference(fb);
488 mutex_unlock(&dev->mode_config.fb_lock);
492 EXPORT_SYMBOL(drm_framebuffer_lookup);
495 * drm_framebuffer_unreference - unref a framebuffer
496 * @fb: framebuffer to unref
498 * This functions decrements the fb's refcount and frees it if it drops to zero.
500 void drm_framebuffer_unreference(struct drm_framebuffer *fb)
502 DRM_DEBUG("FB ID: %d\n", fb->base.id);
503 kref_put(&fb->refcount, drm_framebuffer_free);
505 EXPORT_SYMBOL(drm_framebuffer_unreference);
508 * drm_framebuffer_reference - incr the fb refcnt
511 * This functions increments the fb's refcount.
513 void drm_framebuffer_reference(struct drm_framebuffer *fb)
515 DRM_DEBUG("FB ID: %d\n", fb->base.id);
516 kref_get(&fb->refcount);
518 EXPORT_SYMBOL(drm_framebuffer_reference);
520 static void drm_framebuffer_free_bug(struct kref *kref)
525 static void __drm_framebuffer_unreference(struct drm_framebuffer *fb)
527 DRM_DEBUG("FB ID: %d\n", fb->base.id);
528 kref_put(&fb->refcount, drm_framebuffer_free_bug);
531 /* dev->mode_config.fb_lock must be held! */
532 static void __drm_framebuffer_unregister(struct drm_device *dev,
533 struct drm_framebuffer *fb)
535 mutex_lock(&dev->mode_config.idr_mutex);
536 idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
537 mutex_unlock(&dev->mode_config.idr_mutex);
541 __drm_framebuffer_unreference(fb);
545 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
546 * @fb: fb to unregister
548 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
549 * those used for fbdev. Note that the caller must hold a reference of it's own,
550 * i.e. the object may not be destroyed through this call (since it'll lead to a
551 * locking inversion).
553 void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
555 struct drm_device *dev = fb->dev;
557 mutex_lock(&dev->mode_config.fb_lock);
558 /* Mark fb as reaped and drop idr ref. */
559 __drm_framebuffer_unregister(dev, fb);
560 mutex_unlock(&dev->mode_config.fb_lock);
562 EXPORT_SYMBOL(drm_framebuffer_unregister_private);
565 * drm_framebuffer_cleanup - remove a framebuffer object
566 * @fb: framebuffer to remove
568 * Cleanup framebuffer. This function is intended to be used from the drivers
569 * ->destroy callback. It can also be used to clean up driver private
570 * framebuffers embedded into a larger structure.
572 * Note that this function does not remove the fb from active usuage - if it is
573 * still used anywhere, hilarity can ensue since userspace could call getfb on
574 * the id and get back -EINVAL. Obviously no concern at driver unload time.
576 * Also, the framebuffer will not be removed from the lookup idr - for
577 * user-created framebuffers this will happen in in the rmfb ioctl. For
578 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
579 * drm_framebuffer_unregister_private.
581 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
583 struct drm_device *dev = fb->dev;
585 mutex_lock(&dev->mode_config.fb_lock);
587 dev->mode_config.num_fb--;
588 mutex_unlock(&dev->mode_config.fb_lock);
590 EXPORT_SYMBOL(drm_framebuffer_cleanup);
593 * drm_framebuffer_remove - remove and unreference a framebuffer object
594 * @fb: framebuffer to remove
596 * Scans all the CRTCs and planes in @dev's mode_config. If they're
597 * using @fb, removes it, setting it to NULL. Then drops the reference to the
598 * passed-in framebuffer. Might take the modeset locks.
600 * Note that this function optimizes the cleanup away if the caller holds the
601 * last reference to the framebuffer. It is also guaranteed to not take the
602 * modeset locks in this case.
604 void drm_framebuffer_remove(struct drm_framebuffer *fb)
606 struct drm_device *dev = fb->dev;
607 struct drm_crtc *crtc;
608 struct drm_plane *plane;
609 struct drm_mode_set set;
612 WARN_ON(!list_empty(&fb->filp_head));
615 * drm ABI mandates that we remove any deleted framebuffers from active
616 * useage. But since most sane clients only remove framebuffers they no
617 * longer need, try to optimize this away.
619 * Since we're holding a reference ourselves, observing a refcount of 1
620 * means that we're the last holder and can skip it. Also, the refcount
621 * can never increase from 1 again, so we don't need any barriers or
624 * Note that userspace could try to race with use and instate a new
625 * usage _after_ we've cleared all current ones. End result will be an
626 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
629 if (atomic_read(&fb->refcount.refcount) > 1) {
630 drm_modeset_lock_all(dev);
631 /* remove from any CRTC */
632 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
633 if (crtc->primary->fb == fb) {
634 /* should turn off the crtc */
635 memset(&set, 0, sizeof(struct drm_mode_set));
638 ret = drm_mode_set_config_internal(&set);
640 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
644 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
646 drm_plane_force_disable(plane);
648 drm_modeset_unlock_all(dev);
651 drm_framebuffer_unreference(fb);
653 EXPORT_SYMBOL(drm_framebuffer_remove);
656 * drm_crtc_init_with_planes - Initialise a new CRTC object with
657 * specified primary and cursor planes.
659 * @crtc: CRTC object to init
660 * @primary: Primary plane for CRTC
661 * @cursor: Cursor plane for CRTC
662 * @funcs: callbacks for the new CRTC
664 * Inits a new object created as base part of a driver crtc object.
667 * Zero on success, error code on failure.
669 int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
670 struct drm_plane *primary,
672 const struct drm_crtc_funcs *funcs)
678 crtc->invert_dimensions = false;
680 drm_modeset_lock_all(dev);
681 mutex_init(&crtc->mutex);
682 mutex_lock_nest_lock(&crtc->mutex, &dev->mode_config.mutex);
684 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
688 crtc->base.properties = &crtc->properties;
690 list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
691 dev->mode_config.num_crtc++;
693 crtc->primary = primary;
695 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
698 drm_modeset_unlock_all(dev);
702 EXPORT_SYMBOL(drm_crtc_init_with_planes);
705 * drm_crtc_cleanup - Clean up the core crtc usage
706 * @crtc: CRTC to cleanup
708 * This function cleans up @crtc and removes it from the DRM mode setting
709 * core. Note that the function does *not* free the crtc structure itself,
710 * this is the responsibility of the caller.
712 void drm_crtc_cleanup(struct drm_crtc *crtc)
714 struct drm_device *dev = crtc->dev;
716 kfree(crtc->gamma_store);
717 crtc->gamma_store = NULL;
719 drm_mode_object_put(dev, &crtc->base);
720 list_del(&crtc->head);
721 dev->mode_config.num_crtc--;
723 EXPORT_SYMBOL(drm_crtc_cleanup);
726 * drm_crtc_index - find the index of a registered CRTC
727 * @crtc: CRTC to find index for
729 * Given a registered CRTC, return the index of that CRTC within a DRM
730 * device's list of CRTCs.
732 unsigned int drm_crtc_index(struct drm_crtc *crtc)
734 unsigned int index = 0;
735 struct drm_crtc *tmp;
737 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
746 EXPORT_SYMBOL(drm_crtc_index);
749 * drm_mode_remove - remove and free a mode
750 * @connector: connector list to modify
751 * @mode: mode to remove
753 * Remove @mode from @connector's mode list, then free it.
755 static void drm_mode_remove(struct drm_connector *connector,
756 struct drm_display_mode *mode)
758 list_del(&mode->head);
759 drm_mode_destroy(connector->dev, mode);
763 * drm_connector_init - Init a preallocated connector
765 * @connector: the connector to init
766 * @funcs: callbacks for this connector
767 * @connector_type: user visible type of the connector
769 * Initialises a preallocated connector. Connectors should be
770 * subclassed as part of driver connector objects.
773 * Zero on success, error code on failure.
775 int drm_connector_init(struct drm_device *dev,
776 struct drm_connector *connector,
777 const struct drm_connector_funcs *funcs,
781 struct ida *connector_ida =
782 &drm_connector_enum_list[connector_type].ida;
784 drm_modeset_lock_all(dev);
786 ret = drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
790 connector->base.properties = &connector->properties;
791 connector->dev = dev;
792 connector->funcs = funcs;
793 connector->connector_type = connector_type;
794 connector->connector_type_id =
795 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
796 if (connector->connector_type_id < 0) {
797 ret = connector->connector_type_id;
801 kasprintf(GFP_KERNEL, "%s-%d",
802 drm_connector_enum_list[connector_type].name,
803 connector->connector_type_id);
804 if (!connector->name) {
809 INIT_LIST_HEAD(&connector->probed_modes);
810 INIT_LIST_HEAD(&connector->modes);
811 connector->edid_blob_ptr = NULL;
812 connector->status = connector_status_unknown;
814 list_add_tail(&connector->head, &dev->mode_config.connector_list);
815 dev->mode_config.num_connector++;
817 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
818 drm_object_attach_property(&connector->base,
819 dev->mode_config.edid_property,
822 drm_object_attach_property(&connector->base,
823 dev->mode_config.dpms_property, 0);
827 drm_mode_object_put(dev, &connector->base);
830 drm_modeset_unlock_all(dev);
834 EXPORT_SYMBOL(drm_connector_init);
837 * drm_connector_cleanup - cleans up an initialised connector
838 * @connector: connector to cleanup
840 * Cleans up the connector but doesn't free the object.
842 void drm_connector_cleanup(struct drm_connector *connector)
844 struct drm_device *dev = connector->dev;
845 struct drm_display_mode *mode, *t;
847 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
848 drm_mode_remove(connector, mode);
850 list_for_each_entry_safe(mode, t, &connector->modes, head)
851 drm_mode_remove(connector, mode);
853 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
854 connector->connector_type_id);
856 drm_mode_object_put(dev, &connector->base);
857 kfree(connector->name);
858 connector->name = NULL;
859 list_del(&connector->head);
860 dev->mode_config.num_connector--;
862 EXPORT_SYMBOL(drm_connector_cleanup);
865 * drm_connector_unplug_all - unregister connector userspace interfaces
868 * This function unregisters all connector userspace interfaces in sysfs. Should
869 * be call when the device is disconnected, e.g. from an usb driver's
870 * ->disconnect callback.
872 void drm_connector_unplug_all(struct drm_device *dev)
874 struct drm_connector *connector;
876 /* taking the mode config mutex ends up in a clash with sysfs */
877 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
878 drm_sysfs_connector_remove(connector);
881 EXPORT_SYMBOL(drm_connector_unplug_all);
884 * drm_bridge_init - initialize a drm transcoder/bridge
886 * @bridge: transcoder/bridge to set up
887 * @funcs: bridge function table
889 * Initialises a preallocated bridge. Bridges should be
890 * subclassed as part of driver connector objects.
893 * Zero on success, error code on failure.
895 int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
896 const struct drm_bridge_funcs *funcs)
900 drm_modeset_lock_all(dev);
902 ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
907 bridge->funcs = funcs;
909 list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
910 dev->mode_config.num_bridge++;
913 drm_modeset_unlock_all(dev);
916 EXPORT_SYMBOL(drm_bridge_init);
919 * drm_bridge_cleanup - cleans up an initialised bridge
920 * @bridge: bridge to cleanup
922 * Cleans up the bridge but doesn't free the object.
924 void drm_bridge_cleanup(struct drm_bridge *bridge)
926 struct drm_device *dev = bridge->dev;
928 drm_modeset_lock_all(dev);
929 drm_mode_object_put(dev, &bridge->base);
930 list_del(&bridge->head);
931 dev->mode_config.num_bridge--;
932 drm_modeset_unlock_all(dev);
934 EXPORT_SYMBOL(drm_bridge_cleanup);
937 * drm_encoder_init - Init a preallocated encoder
939 * @encoder: the encoder to init
940 * @funcs: callbacks for this encoder
941 * @encoder_type: user visible type of the encoder
943 * Initialises a preallocated encoder. Encoder should be
944 * subclassed as part of driver encoder objects.
947 * Zero on success, error code on failure.
949 int drm_encoder_init(struct drm_device *dev,
950 struct drm_encoder *encoder,
951 const struct drm_encoder_funcs *funcs,
956 drm_modeset_lock_all(dev);
958 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
963 encoder->encoder_type = encoder_type;
964 encoder->funcs = funcs;
965 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
966 drm_encoder_enum_list[encoder_type].name,
968 if (!encoder->name) {
973 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
974 dev->mode_config.num_encoder++;
978 drm_mode_object_put(dev, &encoder->base);
981 drm_modeset_unlock_all(dev);
985 EXPORT_SYMBOL(drm_encoder_init);
988 * drm_encoder_cleanup - cleans up an initialised encoder
989 * @encoder: encoder to cleanup
991 * Cleans up the encoder but doesn't free the object.
993 void drm_encoder_cleanup(struct drm_encoder *encoder)
995 struct drm_device *dev = encoder->dev;
996 drm_modeset_lock_all(dev);
997 drm_mode_object_put(dev, &encoder->base);
998 kfree(encoder->name);
999 encoder->name = NULL;
1000 list_del(&encoder->head);
1001 dev->mode_config.num_encoder--;
1002 drm_modeset_unlock_all(dev);
1004 EXPORT_SYMBOL(drm_encoder_cleanup);
1007 * drm_universal_plane_init - Initialize a new universal plane object
1009 * @plane: plane object to init
1010 * @possible_crtcs: bitmask of possible CRTCs
1011 * @funcs: callbacks for the new plane
1012 * @formats: array of supported formats (%DRM_FORMAT_*)
1013 * @format_count: number of elements in @formats
1014 * @type: type of plane (overlay, primary, cursor)
1016 * Initializes a plane object of type @type.
1019 * Zero on success, error code on failure.
1021 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1022 unsigned long possible_crtcs,
1023 const struct drm_plane_funcs *funcs,
1024 const uint32_t *formats, uint32_t format_count,
1025 enum drm_plane_type type)
1029 drm_modeset_lock_all(dev);
1031 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1035 plane->base.properties = &plane->properties;
1037 plane->funcs = funcs;
1038 plane->format_types = kmalloc(sizeof(uint32_t) * format_count,
1040 if (!plane->format_types) {
1041 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1042 drm_mode_object_put(dev, &plane->base);
1047 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1048 plane->format_count = format_count;
1049 plane->possible_crtcs = possible_crtcs;
1052 list_add_tail(&plane->head, &dev->mode_config.plane_list);
1053 dev->mode_config.num_total_plane++;
1054 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1055 dev->mode_config.num_overlay_plane++;
1057 drm_object_attach_property(&plane->base,
1058 dev->mode_config.plane_type_property,
1062 drm_modeset_unlock_all(dev);
1066 EXPORT_SYMBOL(drm_universal_plane_init);
1069 * drm_plane_init - Initialize a legacy plane
1071 * @plane: plane object to init
1072 * @possible_crtcs: bitmask of possible CRTCs
1073 * @funcs: callbacks for the new plane
1074 * @formats: array of supported formats (%DRM_FORMAT_*)
1075 * @format_count: number of elements in @formats
1076 * @is_primary: plane type (primary vs overlay)
1078 * Legacy API to initialize a DRM plane.
1080 * New drivers should call drm_universal_plane_init() instead.
1083 * Zero on success, error code on failure.
1085 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1086 unsigned long possible_crtcs,
1087 const struct drm_plane_funcs *funcs,
1088 const uint32_t *formats, uint32_t format_count,
1091 enum drm_plane_type type;
1093 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1094 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1095 formats, format_count, type);
1097 EXPORT_SYMBOL(drm_plane_init);
1100 * drm_plane_cleanup - Clean up the core plane usage
1101 * @plane: plane to cleanup
1103 * This function cleans up @plane and removes it from the DRM mode setting
1104 * core. Note that the function does *not* free the plane structure itself,
1105 * this is the responsibility of the caller.
1107 void drm_plane_cleanup(struct drm_plane *plane)
1109 struct drm_device *dev = plane->dev;
1111 drm_modeset_lock_all(dev);
1112 kfree(plane->format_types);
1113 drm_mode_object_put(dev, &plane->base);
1115 BUG_ON(list_empty(&plane->head));
1117 list_del(&plane->head);
1118 dev->mode_config.num_total_plane--;
1119 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1120 dev->mode_config.num_overlay_plane--;
1121 drm_modeset_unlock_all(dev);
1123 EXPORT_SYMBOL(drm_plane_cleanup);
1126 * drm_plane_force_disable - Forcibly disable a plane
1127 * @plane: plane to disable
1129 * Forces the plane to be disabled.
1131 * Used when the plane's current framebuffer is destroyed,
1132 * and when restoring fbdev mode.
1134 void drm_plane_force_disable(struct drm_plane *plane)
1136 struct drm_framebuffer *old_fb = plane->fb;
1142 ret = plane->funcs->disable_plane(plane);
1144 DRM_ERROR("failed to disable plane with busy fb\n");
1147 /* disconnect the plane from the fb and crtc: */
1148 __drm_framebuffer_unreference(old_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;
1372 void drm_mode_group_destroy(struct drm_mode_group *group)
1374 kfree(group->id_list);
1375 group->id_list = NULL;
1379 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1380 * the drm core's responsibility to set up mode control groups.
1382 int drm_mode_group_init_legacy_group(struct drm_device *dev,
1383 struct drm_mode_group *group)
1385 struct drm_crtc *crtc;
1386 struct drm_encoder *encoder;
1387 struct drm_connector *connector;
1388 struct drm_bridge *bridge;
1391 if ((ret = drm_mode_group_init(dev, group)))
1394 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1395 group->id_list[group->num_crtcs++] = crtc->base.id;
1397 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1398 group->id_list[group->num_crtcs + group->num_encoders++] =
1401 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1402 group->id_list[group->num_crtcs + group->num_encoders +
1403 group->num_connectors++] = connector->base.id;
1405 list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
1406 group->id_list[group->num_crtcs + group->num_encoders +
1407 group->num_connectors + group->num_bridges++] =
1412 EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
1415 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1416 * @out: drm_mode_modeinfo struct to return to the user
1417 * @in: drm_display_mode to use
1419 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1422 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1423 const struct drm_display_mode *in)
1425 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1426 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1427 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1428 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1429 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1430 "timing values too large for mode info\n");
1432 out->clock = in->clock;
1433 out->hdisplay = in->hdisplay;
1434 out->hsync_start = in->hsync_start;
1435 out->hsync_end = in->hsync_end;
1436 out->htotal = in->htotal;
1437 out->hskew = in->hskew;
1438 out->vdisplay = in->vdisplay;
1439 out->vsync_start = in->vsync_start;
1440 out->vsync_end = in->vsync_end;
1441 out->vtotal = in->vtotal;
1442 out->vscan = in->vscan;
1443 out->vrefresh = in->vrefresh;
1444 out->flags = in->flags;
1445 out->type = in->type;
1446 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1447 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1451 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1452 * @out: drm_display_mode to return to the user
1453 * @in: drm_mode_modeinfo to use
1455 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1459 * Zero on success, errno on failure.
1461 static int drm_crtc_convert_umode(struct drm_display_mode *out,
1462 const struct drm_mode_modeinfo *in)
1464 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1467 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1470 out->clock = in->clock;
1471 out->hdisplay = in->hdisplay;
1472 out->hsync_start = in->hsync_start;
1473 out->hsync_end = in->hsync_end;
1474 out->htotal = in->htotal;
1475 out->hskew = in->hskew;
1476 out->vdisplay = in->vdisplay;
1477 out->vsync_start = in->vsync_start;
1478 out->vsync_end = in->vsync_end;
1479 out->vtotal = in->vtotal;
1480 out->vscan = in->vscan;
1481 out->vrefresh = in->vrefresh;
1482 out->flags = in->flags;
1483 out->type = in->type;
1484 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1485 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1491 * drm_mode_getresources - get graphics configuration
1492 * @dev: drm device for the ioctl
1493 * @data: data pointer for the ioctl
1494 * @file_priv: drm file for the ioctl call
1496 * Construct a set of configuration description structures and return
1497 * them to the user, including CRTC, connector and framebuffer configuration.
1499 * Called by the user via ioctl.
1502 * Zero on success, errno on failure.
1504 int drm_mode_getresources(struct drm_device *dev, void *data,
1505 struct drm_file *file_priv)
1507 struct drm_mode_card_res *card_res = data;
1508 struct list_head *lh;
1509 struct drm_framebuffer *fb;
1510 struct drm_connector *connector;
1511 struct drm_crtc *crtc;
1512 struct drm_encoder *encoder;
1514 int connector_count = 0;
1517 int encoder_count = 0;
1519 uint32_t __user *fb_id;
1520 uint32_t __user *crtc_id;
1521 uint32_t __user *connector_id;
1522 uint32_t __user *encoder_id;
1523 struct drm_mode_group *mode_group;
1525 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1529 mutex_lock(&file_priv->fbs_lock);
1531 * For the non-control nodes we need to limit the list of resources
1532 * by IDs in the group list for this node
1534 list_for_each(lh, &file_priv->fbs)
1537 /* handle this in 4 parts */
1539 if (card_res->count_fbs >= fb_count) {
1541 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1542 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1543 if (put_user(fb->base.id, fb_id + copied)) {
1544 mutex_unlock(&file_priv->fbs_lock);
1550 card_res->count_fbs = fb_count;
1551 mutex_unlock(&file_priv->fbs_lock);
1553 drm_modeset_lock_all(dev);
1554 if (!drm_is_primary_client(file_priv)) {
1557 list_for_each(lh, &dev->mode_config.crtc_list)
1560 list_for_each(lh, &dev->mode_config.connector_list)
1563 list_for_each(lh, &dev->mode_config.encoder_list)
1567 mode_group = &file_priv->master->minor->mode_group;
1568 crtc_count = mode_group->num_crtcs;
1569 connector_count = mode_group->num_connectors;
1570 encoder_count = mode_group->num_encoders;
1573 card_res->max_height = dev->mode_config.max_height;
1574 card_res->min_height = dev->mode_config.min_height;
1575 card_res->max_width = dev->mode_config.max_width;
1576 card_res->min_width = dev->mode_config.min_width;
1579 if (card_res->count_crtcs >= crtc_count) {
1581 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1583 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1585 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1586 if (put_user(crtc->base.id, crtc_id + copied)) {
1593 for (i = 0; i < mode_group->num_crtcs; i++) {
1594 if (put_user(mode_group->id_list[i],
1595 crtc_id + copied)) {
1603 card_res->count_crtcs = crtc_count;
1606 if (card_res->count_encoders >= encoder_count) {
1608 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1610 list_for_each_entry(encoder,
1611 &dev->mode_config.encoder_list,
1613 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1615 if (put_user(encoder->base.id, encoder_id +
1623 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1624 if (put_user(mode_group->id_list[i],
1625 encoder_id + copied)) {
1634 card_res->count_encoders = encoder_count;
1637 if (card_res->count_connectors >= connector_count) {
1639 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1641 list_for_each_entry(connector,
1642 &dev->mode_config.connector_list,
1644 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1647 if (put_user(connector->base.id,
1648 connector_id + copied)) {
1655 int start = mode_group->num_crtcs +
1656 mode_group->num_encoders;
1657 for (i = start; i < start + mode_group->num_connectors; i++) {
1658 if (put_user(mode_group->id_list[i],
1659 connector_id + copied)) {
1667 card_res->count_connectors = connector_count;
1669 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1670 card_res->count_connectors, card_res->count_encoders);
1673 drm_modeset_unlock_all(dev);
1678 * drm_mode_getcrtc - get CRTC configuration
1679 * @dev: drm device for the ioctl
1680 * @data: data pointer for the ioctl
1681 * @file_priv: drm file for the ioctl call
1683 * Construct a CRTC configuration structure to return to the user.
1685 * Called by the user via ioctl.
1688 * Zero on success, errno on failure.
1690 int drm_mode_getcrtc(struct drm_device *dev,
1691 void *data, struct drm_file *file_priv)
1693 struct drm_mode_crtc *crtc_resp = data;
1694 struct drm_crtc *crtc;
1697 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1700 drm_modeset_lock_all(dev);
1702 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
1708 crtc_resp->x = crtc->x;
1709 crtc_resp->y = crtc->y;
1710 crtc_resp->gamma_size = crtc->gamma_size;
1711 if (crtc->primary->fb)
1712 crtc_resp->fb_id = crtc->primary->fb->base.id;
1714 crtc_resp->fb_id = 0;
1716 if (crtc->enabled) {
1718 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1719 crtc_resp->mode_valid = 1;
1722 crtc_resp->mode_valid = 0;
1726 drm_modeset_unlock_all(dev);
1730 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1731 const struct drm_file *file_priv)
1734 * If user-space hasn't configured the driver to expose the stereo 3D
1735 * modes, don't expose them.
1737 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1744 * drm_mode_getconnector - get connector configuration
1745 * @dev: drm device for the ioctl
1746 * @data: data pointer for the ioctl
1747 * @file_priv: drm file for the ioctl call
1749 * Construct a connector configuration structure to return to the user.
1751 * Called by the user via ioctl.
1754 * Zero on success, errno on failure.
1756 int drm_mode_getconnector(struct drm_device *dev, void *data,
1757 struct drm_file *file_priv)
1759 struct drm_mode_get_connector *out_resp = data;
1760 struct drm_connector *connector;
1761 struct drm_display_mode *mode;
1763 int props_count = 0;
1764 int encoders_count = 0;
1768 struct drm_mode_modeinfo u_mode;
1769 struct drm_mode_modeinfo __user *mode_ptr;
1770 uint32_t __user *prop_ptr;
1771 uint64_t __user *prop_values;
1772 uint32_t __user *encoder_ptr;
1774 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1777 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1779 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1781 mutex_lock(&dev->mode_config.mutex);
1783 connector = drm_connector_find(dev, out_resp->connector_id);
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_encoder *encoder;
1905 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1908 drm_modeset_lock_all(dev);
1909 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
1916 enc_resp->crtc_id = encoder->crtc->base.id;
1918 enc_resp->crtc_id = 0;
1919 enc_resp->encoder_type = encoder->encoder_type;
1920 enc_resp->encoder_id = encoder->base.id;
1921 enc_resp->possible_crtcs = encoder->possible_crtcs;
1922 enc_resp->possible_clones = encoder->possible_clones;
1925 drm_modeset_unlock_all(dev);
1930 * drm_mode_getplane_res - enumerate all plane resources
1933 * @file_priv: DRM file info
1935 * Construct a list of plane ids to return to the user.
1937 * Called by the user via ioctl.
1940 * Zero on success, errno on failure.
1942 int drm_mode_getplane_res(struct drm_device *dev, void *data,
1943 struct drm_file *file_priv)
1945 struct drm_mode_get_plane_res *plane_resp = data;
1946 struct drm_mode_config *config;
1947 struct drm_plane *plane;
1948 uint32_t __user *plane_ptr;
1949 int copied = 0, ret = 0;
1950 unsigned num_planes;
1952 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1955 drm_modeset_lock_all(dev);
1956 config = &dev->mode_config;
1958 if (file_priv->universal_planes)
1959 num_planes = config->num_total_plane;
1961 num_planes = config->num_overlay_plane;
1964 * This ioctl is called twice, once to determine how much space is
1965 * needed, and the 2nd time to fill it.
1968 (plane_resp->count_planes >= num_planes)) {
1969 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
1971 list_for_each_entry(plane, &config->plane_list, head) {
1973 * Unless userspace set the 'universal planes'
1974 * capability bit, only advertise overlays.
1976 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
1977 !file_priv->universal_planes)
1980 if (put_user(plane->base.id, plane_ptr + copied)) {
1987 plane_resp->count_planes = num_planes;
1990 drm_modeset_unlock_all(dev);
1995 * drm_mode_getplane - get plane configuration
1998 * @file_priv: DRM file info
2000 * Construct a plane configuration structure to return to the user.
2002 * Called by the user via ioctl.
2005 * Zero on success, errno on failure.
2007 int drm_mode_getplane(struct drm_device *dev, void *data,
2008 struct drm_file *file_priv)
2010 struct drm_mode_get_plane *plane_resp = data;
2011 struct drm_plane *plane;
2012 uint32_t __user *format_ptr;
2015 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2018 drm_modeset_lock_all(dev);
2019 plane = drm_plane_find(dev, plane_resp->plane_id);
2026 plane_resp->crtc_id = plane->crtc->base.id;
2028 plane_resp->crtc_id = 0;
2031 plane_resp->fb_id = plane->fb->base.id;
2033 plane_resp->fb_id = 0;
2035 plane_resp->plane_id = plane->base.id;
2036 plane_resp->possible_crtcs = plane->possible_crtcs;
2037 plane_resp->gamma_size = 0;
2040 * This ioctl is called twice, once to determine how much space is
2041 * needed, and the 2nd time to fill it.
2043 if (plane->format_count &&
2044 (plane_resp->count_format_types >= plane->format_count)) {
2045 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2046 if (copy_to_user(format_ptr,
2047 plane->format_types,
2048 sizeof(uint32_t) * plane->format_count)) {
2053 plane_resp->count_format_types = plane->format_count;
2056 drm_modeset_unlock_all(dev);
2061 * drm_mode_setplane - configure a plane's configuration
2063 * @data: ioctl data*
2064 * @file_priv: DRM file info
2066 * Set plane configuration, including placement, fb, scaling, and other factors.
2067 * Or pass a NULL fb to disable.
2070 * Zero on success, errno on failure.
2072 int drm_mode_setplane(struct drm_device *dev, void *data,
2073 struct drm_file *file_priv)
2075 struct drm_mode_set_plane *plane_req = data;
2076 struct drm_plane *plane;
2077 struct drm_crtc *crtc;
2078 struct drm_framebuffer *fb = NULL, *old_fb = NULL;
2080 unsigned int fb_width, fb_height;
2083 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2087 * First, find the plane, crtc, and fb objects. If not available,
2088 * we don't bother to call the driver.
2090 plane = drm_plane_find(dev, plane_req->plane_id);
2092 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2093 plane_req->plane_id);
2097 /* No fb means shut it down */
2098 if (!plane_req->fb_id) {
2099 drm_modeset_lock_all(dev);
2101 ret = plane->funcs->disable_plane(plane);
2108 drm_modeset_unlock_all(dev);
2112 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2114 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2115 plane_req->crtc_id);
2120 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2122 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2128 /* Check whether this plane supports the fb pixel format. */
2129 for (i = 0; i < plane->format_count; i++)
2130 if (fb->pixel_format == plane->format_types[i])
2132 if (i == plane->format_count) {
2133 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2134 drm_get_format_name(fb->pixel_format));
2139 fb_width = fb->width << 16;
2140 fb_height = fb->height << 16;
2142 /* Make sure source coordinates are inside the fb. */
2143 if (plane_req->src_w > fb_width ||
2144 plane_req->src_x > fb_width - plane_req->src_w ||
2145 plane_req->src_h > fb_height ||
2146 plane_req->src_y > fb_height - plane_req->src_h) {
2147 DRM_DEBUG_KMS("Invalid source coordinates "
2148 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2149 plane_req->src_w >> 16,
2150 ((plane_req->src_w & 0xffff) * 15625) >> 10,
2151 plane_req->src_h >> 16,
2152 ((plane_req->src_h & 0xffff) * 15625) >> 10,
2153 plane_req->src_x >> 16,
2154 ((plane_req->src_x & 0xffff) * 15625) >> 10,
2155 plane_req->src_y >> 16,
2156 ((plane_req->src_y & 0xffff) * 15625) >> 10);
2161 /* Give drivers some help against integer overflows */
2162 if (plane_req->crtc_w > INT_MAX ||
2163 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2164 plane_req->crtc_h > INT_MAX ||
2165 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2166 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2167 plane_req->crtc_w, plane_req->crtc_h,
2168 plane_req->crtc_x, plane_req->crtc_y);
2173 drm_modeset_lock_all(dev);
2175 ret = plane->funcs->update_plane(plane, crtc, fb,
2176 plane_req->crtc_x, plane_req->crtc_y,
2177 plane_req->crtc_w, plane_req->crtc_h,
2178 plane_req->src_x, plane_req->src_y,
2179 plane_req->src_w, plane_req->src_h);
2187 drm_modeset_unlock_all(dev);
2191 drm_framebuffer_unreference(fb);
2193 drm_framebuffer_unreference(old_fb);
2199 * drm_mode_set_config_internal - helper to call ->set_config
2200 * @set: modeset config to set
2202 * This is a little helper to wrap internal calls to the ->set_config driver
2203 * interface. The only thing it adds is correct refcounting dance.
2206 * Zero on success, errno on failure.
2208 int drm_mode_set_config_internal(struct drm_mode_set *set)
2210 struct drm_crtc *crtc = set->crtc;
2211 struct drm_framebuffer *fb;
2212 struct drm_crtc *tmp;
2216 * NOTE: ->set_config can also disable other crtcs (if we steal all
2217 * connectors from it), hence we need to refcount the fbs across all
2218 * crtcs. Atomic modeset will have saner semantics ...
2220 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
2221 tmp->old_fb = tmp->primary->fb;
2225 ret = crtc->funcs->set_config(set);
2227 crtc->primary->crtc = crtc;
2228 crtc->primary->fb = fb;
2231 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
2232 if (tmp->primary->fb)
2233 drm_framebuffer_reference(tmp->primary->fb);
2235 drm_framebuffer_unreference(tmp->old_fb);
2240 EXPORT_SYMBOL(drm_mode_set_config_internal);
2243 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2245 * @crtc: CRTC that framebuffer will be displayed on
2248 * @mode: mode that framebuffer will be displayed under
2249 * @fb: framebuffer to check size of
2251 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2253 const struct drm_display_mode *mode,
2254 const struct drm_framebuffer *fb)
2257 int hdisplay, vdisplay;
2259 hdisplay = mode->hdisplay;
2260 vdisplay = mode->vdisplay;
2262 if (drm_mode_is_stereo(mode)) {
2263 struct drm_display_mode adjusted = *mode;
2265 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE);
2266 hdisplay = adjusted.crtc_hdisplay;
2267 vdisplay = adjusted.crtc_vdisplay;
2270 if (crtc->invert_dimensions)
2271 swap(hdisplay, vdisplay);
2273 if (hdisplay > fb->width ||
2274 vdisplay > fb->height ||
2275 x > fb->width - hdisplay ||
2276 y > fb->height - vdisplay) {
2277 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2278 fb->width, fb->height, hdisplay, vdisplay, x, y,
2279 crtc->invert_dimensions ? " (inverted)" : "");
2285 EXPORT_SYMBOL(drm_crtc_check_viewport);
2288 * drm_mode_setcrtc - set CRTC configuration
2289 * @dev: drm device for the ioctl
2290 * @data: data pointer for the ioctl
2291 * @file_priv: drm file for the ioctl call
2293 * Build a new CRTC configuration based on user request.
2295 * Called by the user via ioctl.
2298 * Zero on success, errno on failure.
2300 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2301 struct drm_file *file_priv)
2303 struct drm_mode_config *config = &dev->mode_config;
2304 struct drm_mode_crtc *crtc_req = data;
2305 struct drm_crtc *crtc;
2306 struct drm_connector **connector_set = NULL, *connector;
2307 struct drm_framebuffer *fb = NULL;
2308 struct drm_display_mode *mode = NULL;
2309 struct drm_mode_set set;
2310 uint32_t __user *set_connectors_ptr;
2314 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2317 /* For some reason crtc x/y offsets are signed internally. */
2318 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2321 drm_modeset_lock_all(dev);
2322 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2324 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2328 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2330 if (crtc_req->mode_valid) {
2331 /* If we have a mode we need a framebuffer. */
2332 /* If we pass -1, set the mode with the currently bound fb */
2333 if (crtc_req->fb_id == -1) {
2334 if (!crtc->primary->fb) {
2335 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2339 fb = crtc->primary->fb;
2340 /* Make refcounting symmetric with the lookup path. */
2341 drm_framebuffer_reference(fb);
2343 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2345 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2352 mode = drm_mode_create(dev);
2358 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2360 DRM_DEBUG_KMS("Invalid mode\n");
2364 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2366 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2373 if (crtc_req->count_connectors == 0 && mode) {
2374 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2379 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2380 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2381 crtc_req->count_connectors);
2386 if (crtc_req->count_connectors > 0) {
2389 /* Avoid unbounded kernel memory allocation */
2390 if (crtc_req->count_connectors > config->num_connector) {
2395 connector_set = kmalloc(crtc_req->count_connectors *
2396 sizeof(struct drm_connector *),
2398 if (!connector_set) {
2403 for (i = 0; i < crtc_req->count_connectors; i++) {
2404 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2405 if (get_user(out_id, &set_connectors_ptr[i])) {
2410 connector = drm_connector_find(dev, out_id);
2412 DRM_DEBUG_KMS("Connector id %d unknown\n",
2417 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
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_crtc *crtc;
2451 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2454 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2457 crtc = drm_crtc_find(dev, req->crtc_id);
2459 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2463 mutex_lock(&crtc->mutex);
2464 if (req->flags & DRM_MODE_CURSOR_BO) {
2465 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
2469 /* Turns off the cursor if handle is 0 */
2470 if (crtc->funcs->cursor_set2)
2471 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2472 req->width, req->height, req->hot_x, req->hot_y);
2474 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2475 req->width, req->height);
2478 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2479 if (crtc->funcs->cursor_move) {
2480 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2487 mutex_unlock(&crtc->mutex);
2495 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2496 * @dev: drm device for the ioctl
2497 * @data: data pointer for the ioctl
2498 * @file_priv: drm file for the ioctl call
2500 * Set the cursor configuration based on user request.
2502 * Called by the user via ioctl.
2505 * Zero on success, errno on failure.
2507 int drm_mode_cursor_ioctl(struct drm_device *dev,
2508 void *data, struct drm_file *file_priv)
2510 struct drm_mode_cursor *req = data;
2511 struct drm_mode_cursor2 new_req;
2513 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2514 new_req.hot_x = new_req.hot_y = 0;
2516 return drm_mode_cursor_common(dev, &new_req, file_priv);
2520 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2521 * @dev: drm device for the ioctl
2522 * @data: data pointer for the ioctl
2523 * @file_priv: drm file for the ioctl call
2525 * Set the cursor configuration based on user request. This implements the 2nd
2526 * version of the cursor ioctl, which allows userspace to additionally specify
2527 * the hotspot of the pointer.
2529 * Called by the user via ioctl.
2532 * Zero on success, errno on failure.
2534 int drm_mode_cursor2_ioctl(struct drm_device *dev,
2535 void *data, struct drm_file *file_priv)
2537 struct drm_mode_cursor2 *req = data;
2538 return drm_mode_cursor_common(dev, req, file_priv);
2542 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2543 * @bpp: bits per pixels
2544 * @depth: bit depth per pixel
2546 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2547 * Useful in fbdev emulation code, since that deals in those values.
2549 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2555 fmt = DRM_FORMAT_C8;
2559 fmt = DRM_FORMAT_XRGB1555;
2561 fmt = DRM_FORMAT_RGB565;
2564 fmt = DRM_FORMAT_RGB888;
2568 fmt = DRM_FORMAT_XRGB8888;
2569 else if (depth == 30)
2570 fmt = DRM_FORMAT_XRGB2101010;
2572 fmt = DRM_FORMAT_ARGB8888;
2575 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2576 fmt = DRM_FORMAT_XRGB8888;
2582 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
2585 * drm_mode_addfb - add an FB to the graphics configuration
2586 * @dev: drm device for the ioctl
2587 * @data: data pointer for the ioctl
2588 * @file_priv: drm file for the ioctl call
2590 * Add a new FB to the specified CRTC, given a user request. This is the
2591 * original addfb ioclt which only supported RGB formats.
2593 * Called by the user via ioctl.
2596 * Zero on success, errno on failure.
2598 int drm_mode_addfb(struct drm_device *dev,
2599 void *data, struct drm_file *file_priv)
2601 struct drm_mode_fb_cmd *or = data;
2602 struct drm_mode_fb_cmd2 r = {};
2603 struct drm_mode_config *config = &dev->mode_config;
2604 struct drm_framebuffer *fb;
2607 /* Use new struct with format internally */
2608 r.fb_id = or->fb_id;
2609 r.width = or->width;
2610 r.height = or->height;
2611 r.pitches[0] = or->pitch;
2612 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
2613 r.handles[0] = or->handle;
2615 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2618 if ((config->min_width > r.width) || (r.width > config->max_width))
2621 if ((config->min_height > r.height) || (r.height > config->max_height))
2624 fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r);
2626 DRM_DEBUG_KMS("could not create framebuffer\n");
2630 mutex_lock(&file_priv->fbs_lock);
2631 or->fb_id = fb->base.id;
2632 list_add(&fb->filp_head, &file_priv->fbs);
2633 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2634 mutex_unlock(&file_priv->fbs_lock);
2639 static int format_check(const struct drm_mode_fb_cmd2 *r)
2641 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
2645 case DRM_FORMAT_RGB332:
2646 case DRM_FORMAT_BGR233:
2647 case DRM_FORMAT_XRGB4444:
2648 case DRM_FORMAT_XBGR4444:
2649 case DRM_FORMAT_RGBX4444:
2650 case DRM_FORMAT_BGRX4444:
2651 case DRM_FORMAT_ARGB4444:
2652 case DRM_FORMAT_ABGR4444:
2653 case DRM_FORMAT_RGBA4444:
2654 case DRM_FORMAT_BGRA4444:
2655 case DRM_FORMAT_XRGB1555:
2656 case DRM_FORMAT_XBGR1555:
2657 case DRM_FORMAT_RGBX5551:
2658 case DRM_FORMAT_BGRX5551:
2659 case DRM_FORMAT_ARGB1555:
2660 case DRM_FORMAT_ABGR1555:
2661 case DRM_FORMAT_RGBA5551:
2662 case DRM_FORMAT_BGRA5551:
2663 case DRM_FORMAT_RGB565:
2664 case DRM_FORMAT_BGR565:
2665 case DRM_FORMAT_RGB888:
2666 case DRM_FORMAT_BGR888:
2667 case DRM_FORMAT_XRGB8888:
2668 case DRM_FORMAT_XBGR8888:
2669 case DRM_FORMAT_RGBX8888:
2670 case DRM_FORMAT_BGRX8888:
2671 case DRM_FORMAT_ARGB8888:
2672 case DRM_FORMAT_ABGR8888:
2673 case DRM_FORMAT_RGBA8888:
2674 case DRM_FORMAT_BGRA8888:
2675 case DRM_FORMAT_XRGB2101010:
2676 case DRM_FORMAT_XBGR2101010:
2677 case DRM_FORMAT_RGBX1010102:
2678 case DRM_FORMAT_BGRX1010102:
2679 case DRM_FORMAT_ARGB2101010:
2680 case DRM_FORMAT_ABGR2101010:
2681 case DRM_FORMAT_RGBA1010102:
2682 case DRM_FORMAT_BGRA1010102:
2683 case DRM_FORMAT_YUYV:
2684 case DRM_FORMAT_YVYU:
2685 case DRM_FORMAT_UYVY:
2686 case DRM_FORMAT_VYUY:
2687 case DRM_FORMAT_AYUV:
2688 case DRM_FORMAT_NV12:
2689 case DRM_FORMAT_NV21:
2690 case DRM_FORMAT_NV16:
2691 case DRM_FORMAT_NV61:
2692 case DRM_FORMAT_NV24:
2693 case DRM_FORMAT_NV42:
2694 case DRM_FORMAT_YUV410:
2695 case DRM_FORMAT_YVU410:
2696 case DRM_FORMAT_YUV411:
2697 case DRM_FORMAT_YVU411:
2698 case DRM_FORMAT_YUV420:
2699 case DRM_FORMAT_YVU420:
2700 case DRM_FORMAT_YUV422:
2701 case DRM_FORMAT_YVU422:
2702 case DRM_FORMAT_YUV444:
2703 case DRM_FORMAT_YVU444:
2706 DRM_DEBUG_KMS("invalid pixel format %s\n",
2707 drm_get_format_name(r->pixel_format));
2712 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
2714 int ret, hsub, vsub, num_planes, i;
2716 ret = format_check(r);
2718 DRM_DEBUG_KMS("bad framebuffer format %s\n",
2719 drm_get_format_name(r->pixel_format));
2723 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
2724 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
2725 num_planes = drm_format_num_planes(r->pixel_format);
2727 if (r->width == 0 || r->width % hsub) {
2728 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->height);
2732 if (r->height == 0 || r->height % vsub) {
2733 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
2737 for (i = 0; i < num_planes; i++) {
2738 unsigned int width = r->width / (i != 0 ? hsub : 1);
2739 unsigned int height = r->height / (i != 0 ? vsub : 1);
2740 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
2742 if (!r->handles[i]) {
2743 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
2747 if ((uint64_t) width * cpp > UINT_MAX)
2750 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
2753 if (r->pitches[i] < width * cpp) {
2754 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
2763 * drm_mode_addfb2 - add an FB to the graphics configuration
2764 * @dev: drm device for the ioctl
2765 * @data: data pointer for the ioctl
2766 * @file_priv: drm file for the ioctl call
2768 * Add a new FB to the specified CRTC, given a user request with format. This is
2769 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
2770 * and uses fourcc codes as pixel format specifiers.
2772 * Called by the user via ioctl.
2775 * Zero on success, errno on failure.
2777 int drm_mode_addfb2(struct drm_device *dev,
2778 void *data, struct drm_file *file_priv)
2780 struct drm_mode_fb_cmd2 *r = data;
2781 struct drm_mode_config *config = &dev->mode_config;
2782 struct drm_framebuffer *fb;
2785 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2788 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
2789 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
2793 if ((config->min_width > r->width) || (r->width > config->max_width)) {
2794 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
2795 r->width, config->min_width, config->max_width);
2798 if ((config->min_height > r->height) || (r->height > config->max_height)) {
2799 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
2800 r->height, config->min_height, config->max_height);
2804 ret = framebuffer_check(r);
2808 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
2810 DRM_DEBUG_KMS("could not create framebuffer\n");
2814 mutex_lock(&file_priv->fbs_lock);
2815 r->fb_id = fb->base.id;
2816 list_add(&fb->filp_head, &file_priv->fbs);
2817 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2818 mutex_unlock(&file_priv->fbs_lock);
2825 * drm_mode_rmfb - remove an FB from the configuration
2826 * @dev: drm device for the ioctl
2827 * @data: data pointer for the ioctl
2828 * @file_priv: drm file for the ioctl call
2830 * Remove the FB specified by the user.
2832 * Called by the user via ioctl.
2835 * Zero on success, errno on failure.
2837 int drm_mode_rmfb(struct drm_device *dev,
2838 void *data, struct drm_file *file_priv)
2840 struct drm_framebuffer *fb = NULL;
2841 struct drm_framebuffer *fbl = NULL;
2842 uint32_t *id = data;
2845 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2848 mutex_lock(&file_priv->fbs_lock);
2849 mutex_lock(&dev->mode_config.fb_lock);
2850 fb = __drm_framebuffer_lookup(dev, *id);
2854 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
2860 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
2861 __drm_framebuffer_unregister(dev, fb);
2863 list_del_init(&fb->filp_head);
2864 mutex_unlock(&dev->mode_config.fb_lock);
2865 mutex_unlock(&file_priv->fbs_lock);
2867 drm_framebuffer_remove(fb);
2872 mutex_unlock(&dev->mode_config.fb_lock);
2873 mutex_unlock(&file_priv->fbs_lock);
2879 * drm_mode_getfb - get FB info
2880 * @dev: drm device for the ioctl
2881 * @data: data pointer for the ioctl
2882 * @file_priv: drm file for the ioctl call
2884 * Lookup the FB given its ID and return info about it.
2886 * Called by the user via ioctl.
2889 * Zero on success, errno on failure.
2891 int drm_mode_getfb(struct drm_device *dev,
2892 void *data, struct drm_file *file_priv)
2894 struct drm_mode_fb_cmd *r = data;
2895 struct drm_framebuffer *fb;
2898 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2901 fb = drm_framebuffer_lookup(dev, r->fb_id);
2905 r->height = fb->height;
2906 r->width = fb->width;
2907 r->depth = fb->depth;
2908 r->bpp = fb->bits_per_pixel;
2909 r->pitch = fb->pitches[0];
2910 if (fb->funcs->create_handle) {
2911 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
2912 drm_is_control_client(file_priv)) {
2913 ret = fb->funcs->create_handle(fb, file_priv,
2916 /* GET_FB() is an unprivileged ioctl so we must not
2917 * return a buffer-handle to non-master processes! For
2918 * backwards-compatibility reasons, we cannot make
2919 * GET_FB() privileged, so just return an invalid handle
2920 * for non-masters. */
2928 drm_framebuffer_unreference(fb);
2934 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
2935 * @dev: drm device for the ioctl
2936 * @data: data pointer for the ioctl
2937 * @file_priv: drm file for the ioctl call
2939 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
2940 * rectangle list. Generic userspace which does frontbuffer rendering must call
2941 * this ioctl to flush out the changes on manual-update display outputs, e.g.
2942 * usb display-link, mipi manual update panels or edp panel self refresh modes.
2944 * Modesetting drivers which always update the frontbuffer do not need to
2945 * implement the corresponding ->dirty framebuffer callback.
2947 * Called by the user via ioctl.
2950 * Zero on success, errno on failure.
2952 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
2953 void *data, struct drm_file *file_priv)
2955 struct drm_clip_rect __user *clips_ptr;
2956 struct drm_clip_rect *clips = NULL;
2957 struct drm_mode_fb_dirty_cmd *r = data;
2958 struct drm_framebuffer *fb;
2963 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2966 fb = drm_framebuffer_lookup(dev, r->fb_id);
2970 num_clips = r->num_clips;
2971 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
2973 if (!num_clips != !clips_ptr) {
2978 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
2980 /* If userspace annotates copy, clips must come in pairs */
2981 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
2986 if (num_clips && clips_ptr) {
2987 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
2991 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
2997 ret = copy_from_user(clips, clips_ptr,
2998 num_clips * sizeof(*clips));
3005 if (fb->funcs->dirty) {
3006 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3015 drm_framebuffer_unreference(fb);
3022 * drm_fb_release - remove and free the FBs on this file
3023 * @priv: drm file for the ioctl
3025 * Destroy all the FBs associated with @filp.
3027 * Called by the user via ioctl.
3030 * Zero on success, errno on failure.
3032 void drm_fb_release(struct drm_file *priv)
3034 struct drm_device *dev = priv->minor->dev;
3035 struct drm_framebuffer *fb, *tfb;
3037 mutex_lock(&priv->fbs_lock);
3038 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3040 mutex_lock(&dev->mode_config.fb_lock);
3041 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3042 __drm_framebuffer_unregister(dev, fb);
3043 mutex_unlock(&dev->mode_config.fb_lock);
3045 list_del_init(&fb->filp_head);
3047 /* This will also drop the fpriv->fbs reference. */
3048 drm_framebuffer_remove(fb);
3050 mutex_unlock(&priv->fbs_lock);
3054 * drm_property_create - create a new property type
3056 * @flags: flags specifying the property type
3057 * @name: name of the property
3058 * @num_values: number of pre-defined values
3060 * This creates a new generic drm property which can then be attached to a drm
3061 * object with drm_object_attach_property. The returned property object must be
3062 * freed with drm_property_destroy.
3065 * A pointer to the newly created property on success, NULL on failure.
3067 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3068 const char *name, int num_values)
3070 struct drm_property *property = NULL;
3073 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3078 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
3079 if (!property->values)
3083 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3087 property->flags = flags;
3088 property->num_values = num_values;
3089 INIT_LIST_HEAD(&property->enum_blob_list);
3092 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3093 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3096 list_add_tail(&property->head, &dev->mode_config.property_list);
3098 WARN_ON(!drm_property_type_valid(property));
3102 kfree(property->values);
3106 EXPORT_SYMBOL(drm_property_create);
3109 * drm_property_create - create a new enumeration property type
3111 * @flags: flags specifying the property type
3112 * @name: name of the property
3113 * @props: enumeration lists with property values
3114 * @num_values: number of pre-defined values
3116 * This creates a new generic drm property which can then be attached to a drm
3117 * object with drm_object_attach_property. The returned property object must be
3118 * freed with drm_property_destroy.
3120 * Userspace is only allowed to set one of the predefined values for enumeration
3124 * A pointer to the newly created property on success, NULL on failure.
3126 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3128 const struct drm_prop_enum_list *props,
3131 struct drm_property *property;
3134 flags |= DRM_MODE_PROP_ENUM;
3136 property = drm_property_create(dev, flags, name, num_values);
3140 for (i = 0; i < num_values; i++) {
3141 ret = drm_property_add_enum(property, i,
3145 drm_property_destroy(dev, property);
3152 EXPORT_SYMBOL(drm_property_create_enum);
3155 * drm_property_create - create a new bitmask property type
3157 * @flags: flags specifying the property type
3158 * @name: name of the property
3159 * @props: enumeration lists with property bitflags
3160 * @num_values: number of pre-defined values
3162 * This creates a new generic drm property which can then be attached to a drm
3163 * object with drm_object_attach_property. The returned property object must be
3164 * freed with drm_property_destroy.
3166 * Compared to plain enumeration properties userspace is allowed to set any
3167 * or'ed together combination of the predefined property bitflag values
3170 * A pointer to the newly created property on success, NULL on failure.
3172 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3173 int flags, const char *name,
3174 const struct drm_prop_enum_list *props,
3177 struct drm_property *property;
3180 flags |= DRM_MODE_PROP_BITMASK;
3182 property = drm_property_create(dev, flags, name, num_values);
3186 for (i = 0; i < num_values; i++) {
3187 ret = drm_property_add_enum(property, i,
3191 drm_property_destroy(dev, property);
3198 EXPORT_SYMBOL(drm_property_create_bitmask);
3201 * drm_property_create - create a new ranged property type
3203 * @flags: flags specifying the property type
3204 * @name: name of the property
3205 * @min: minimum value of the property
3206 * @max: maximum value of the property
3208 * This creates a new generic drm property which can then be attached to a drm
3209 * object with drm_object_attach_property. The returned property object must be
3210 * freed with drm_property_destroy.
3212 * Userspace is allowed to set any interger value in the (min, max) range
3216 * A pointer to the newly created property on success, NULL on failure.
3218 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3220 uint64_t min, uint64_t max)
3222 struct drm_property *property;
3224 flags |= DRM_MODE_PROP_RANGE;
3226 property = drm_property_create(dev, flags, name, 2);
3230 property->values[0] = min;
3231 property->values[1] = max;
3235 EXPORT_SYMBOL(drm_property_create_range);
3238 * drm_property_add_enum - add a possible value to an enumeration property
3239 * @property: enumeration property to change
3240 * @index: index of the new enumeration
3241 * @value: value of the new enumeration
3242 * @name: symbolic name of the new enumeration
3244 * This functions adds enumerations to a property.
3246 * It's use is deprecated, drivers should use one of the more specific helpers
3247 * to directly create the property with all enumerations already attached.
3250 * Zero on success, error code on failure.
3252 int drm_property_add_enum(struct drm_property *property, int index,
3253 uint64_t value, const char *name)
3255 struct drm_property_enum *prop_enum;
3257 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3258 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
3262 * Bitmask enum properties have the additional constraint of values
3265 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3269 if (!list_empty(&property->enum_blob_list)) {
3270 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3271 if (prop_enum->value == value) {
3272 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3273 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3279 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3283 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3284 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3285 prop_enum->value = value;
3287 property->values[index] = value;
3288 list_add_tail(&prop_enum->head, &property->enum_blob_list);
3291 EXPORT_SYMBOL(drm_property_add_enum);
3294 * drm_property_destroy - destroy a drm property
3296 * @property: property to destry
3298 * This function frees a property including any attached resources like
3299 * enumeration values.
3301 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3303 struct drm_property_enum *prop_enum, *pt;
3305 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
3306 list_del(&prop_enum->head);
3310 if (property->num_values)
3311 kfree(property->values);
3312 drm_mode_object_put(dev, &property->base);
3313 list_del(&property->head);
3316 EXPORT_SYMBOL(drm_property_destroy);
3319 * drm_object_attach_property - attach a property to a modeset object
3320 * @obj: drm modeset object
3321 * @property: property to attach
3322 * @init_val: initial value of the property
3324 * This attaches the given property to the modeset object with the given initial
3325 * value. Currently this function cannot fail since the properties are stored in
3326 * a statically sized array.
3328 void drm_object_attach_property(struct drm_mode_object *obj,
3329 struct drm_property *property,
3332 int count = obj->properties->count;
3334 if (count == DRM_OBJECT_MAX_PROPERTY) {
3335 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3336 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3337 "you see this message on the same object type.\n",
3342 obj->properties->ids[count] = property->base.id;
3343 obj->properties->values[count] = init_val;
3344 obj->properties->count++;
3346 EXPORT_SYMBOL(drm_object_attach_property);
3349 * drm_object_property_set_value - set the value of a property
3350 * @obj: drm mode object to set property value for
3351 * @property: property to set
3352 * @val: value the property should be set to
3354 * This functions sets a given property on a given object. This function only
3355 * changes the software state of the property, it does not call into the
3356 * driver's ->set_property callback.
3359 * Zero on success, error code on failure.
3361 int drm_object_property_set_value(struct drm_mode_object *obj,
3362 struct drm_property *property, uint64_t val)
3366 for (i = 0; i < obj->properties->count; i++) {
3367 if (obj->properties->ids[i] == property->base.id) {
3368 obj->properties->values[i] = val;
3375 EXPORT_SYMBOL(drm_object_property_set_value);
3378 * drm_object_property_get_value - retrieve the value of a property
3379 * @obj: drm mode object to get property value from
3380 * @property: property to retrieve
3381 * @val: storage for the property value
3383 * This function retrieves the softare state of the given property for the given
3384 * property. Since there is no driver callback to retrieve the current property
3385 * value this might be out of sync with the hardware, depending upon the driver
3389 * Zero on success, error code on failure.
3391 int drm_object_property_get_value(struct drm_mode_object *obj,
3392 struct drm_property *property, uint64_t *val)
3396 for (i = 0; i < obj->properties->count; i++) {
3397 if (obj->properties->ids[i] == property->base.id) {
3398 *val = obj->properties->values[i];
3405 EXPORT_SYMBOL(drm_object_property_get_value);
3408 * drm_mode_getproperty_ioctl - get the current value of a connector's property
3411 * @file_priv: DRM file info
3413 * This function retrieves the current value for an connectors's property.
3415 * Called by the user via ioctl.
3418 * Zero on success, errno on failure.
3420 int drm_mode_getproperty_ioctl(struct drm_device *dev,
3421 void *data, struct drm_file *file_priv)
3423 struct drm_mode_get_property *out_resp = data;
3424 struct drm_property *property;
3427 int value_count = 0;
3430 struct drm_property_enum *prop_enum;
3431 struct drm_mode_property_enum __user *enum_ptr;
3432 struct drm_property_blob *prop_blob;
3433 uint32_t __user *blob_id_ptr;
3434 uint64_t __user *values_ptr;
3435 uint32_t __user *blob_length_ptr;
3437 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3440 drm_modeset_lock_all(dev);
3441 property = drm_property_find(dev, out_resp->prop_id);
3447 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3448 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3449 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
3451 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
3452 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
3456 value_count = property->num_values;
3458 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
3459 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
3460 out_resp->flags = property->flags;
3462 if ((out_resp->count_values >= value_count) && value_count) {
3463 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
3464 for (i = 0; i < value_count; i++) {
3465 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
3471 out_resp->count_values = value_count;
3473 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3474 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3475 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
3477 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3478 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3480 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
3485 if (copy_to_user(&enum_ptr[copied].name,
3486 &prop_enum->name, DRM_PROP_NAME_LEN)) {
3493 out_resp->count_enum_blobs = enum_count;
3496 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
3497 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
3499 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr;
3500 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr;
3502 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
3503 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
3508 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
3516 out_resp->count_enum_blobs = blob_count;
3519 drm_modeset_unlock_all(dev);
3523 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
3526 struct drm_property_blob *blob;
3529 if (!length || !data)
3532 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
3536 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
3542 blob->length = length;
3544 memcpy(blob->data, data, length);
3546 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
3550 static void drm_property_destroy_blob(struct drm_device *dev,
3551 struct drm_property_blob *blob)
3553 drm_mode_object_put(dev, &blob->base);
3554 list_del(&blob->head);
3559 * drm_mode_getblob_ioctl - get the contents of a blob property value
3562 * @file_priv: DRM file info
3564 * This function retrieves the contents of a blob property. The value stored in
3565 * an object's blob property is just a normal modeset object id.
3567 * Called by the user via ioctl.
3570 * Zero on success, errno on failure.
3572 int drm_mode_getblob_ioctl(struct drm_device *dev,
3573 void *data, struct drm_file *file_priv)
3575 struct drm_mode_get_blob *out_resp = data;
3576 struct drm_property_blob *blob;
3578 void __user *blob_ptr;
3580 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3583 drm_modeset_lock_all(dev);
3584 blob = drm_property_blob_find(dev, out_resp->blob_id);
3590 if (out_resp->length == blob->length) {
3591 blob_ptr = (void __user *)(unsigned long)out_resp->data;
3592 if (copy_to_user(blob_ptr, blob->data, blob->length)){
3597 out_resp->length = blob->length;
3600 drm_modeset_unlock_all(dev);
3605 * drm_mode_connector_update_edid_property - update the edid property of a connector
3606 * @connector: drm connector
3607 * @edid: new value of the edid property
3609 * This function creates a new blob modeset object and assigns its id to the
3610 * connector's edid property.
3613 * Zero on success, errno on failure.
3615 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
3618 struct drm_device *dev = connector->dev;
3621 if (connector->edid_blob_ptr)
3622 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
3624 /* Delete edid, when there is none. */
3626 connector->edid_blob_ptr = NULL;
3627 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
3631 size = EDID_LENGTH * (1 + edid->extensions);
3632 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
3634 if (!connector->edid_blob_ptr)
3637 ret = drm_object_property_set_value(&connector->base,
3638 dev->mode_config.edid_property,
3639 connector->edid_blob_ptr->base.id);
3643 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
3645 static bool drm_property_change_is_valid(struct drm_property *property,
3648 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
3651 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
3652 if (value < property->values[0] || value > property->values[1])
3655 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3657 uint64_t valid_mask = 0;
3658 for (i = 0; i < property->num_values; i++)
3659 valid_mask |= (1ULL << property->values[i]);
3660 return !(value & ~valid_mask);
3661 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
3662 /* Only the driver knows */
3666 for (i = 0; i < property->num_values; i++)
3667 if (property->values[i] == value)
3674 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
3677 * @file_priv: DRM file info
3679 * This function sets the current value for a connectors's property. It also
3680 * calls into a driver's ->set_property callback to update the hardware state
3682 * Called by the user via ioctl.
3685 * Zero on success, errno on failure.
3687 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
3688 void *data, struct drm_file *file_priv)
3690 struct drm_mode_connector_set_property *conn_set_prop = data;
3691 struct drm_mode_obj_set_property obj_set_prop = {
3692 .value = conn_set_prop->value,
3693 .prop_id = conn_set_prop->prop_id,
3694 .obj_id = conn_set_prop->connector_id,
3695 .obj_type = DRM_MODE_OBJECT_CONNECTOR
3698 /* It does all the locking and checking we need */
3699 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
3702 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
3703 struct drm_property *property,
3707 struct drm_connector *connector = obj_to_connector(obj);
3709 /* Do DPMS ourselves */
3710 if (property == connector->dev->mode_config.dpms_property) {
3711 if (connector->funcs->dpms)
3712 (*connector->funcs->dpms)(connector, (int)value);
3714 } else if (connector->funcs->set_property)
3715 ret = connector->funcs->set_property(connector, property, value);
3717 /* store the property value if successful */
3719 drm_object_property_set_value(&connector->base, property, value);
3723 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
3724 struct drm_property *property,
3728 struct drm_crtc *crtc = obj_to_crtc(obj);
3730 if (crtc->funcs->set_property)
3731 ret = crtc->funcs->set_property(crtc, property, value);
3733 drm_object_property_set_value(obj, property, value);
3738 static int drm_mode_plane_set_obj_prop(struct drm_mode_object *obj,
3739 struct drm_property *property,
3743 struct drm_plane *plane = obj_to_plane(obj);
3745 if (plane->funcs->set_property)
3746 ret = plane->funcs->set_property(plane, property, value);
3748 drm_object_property_set_value(obj, property, value);
3754 * drm_mode_getproperty_ioctl - get the current value of a object's property
3757 * @file_priv: DRM file info
3759 * This function retrieves the current value for an object's property. Compared
3760 * to the connector specific ioctl this one is extended to also work on crtc and
3763 * Called by the user via ioctl.
3766 * Zero on success, errno on failure.
3768 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
3769 struct drm_file *file_priv)
3771 struct drm_mode_obj_get_properties *arg = data;
3772 struct drm_mode_object *obj;
3776 int props_count = 0;
3777 uint32_t __user *props_ptr;
3778 uint64_t __user *prop_values_ptr;
3780 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3783 drm_modeset_lock_all(dev);
3785 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
3790 if (!obj->properties) {
3795 props_count = obj->properties->count;
3797 /* This ioctl is called twice, once to determine how much space is
3798 * needed, and the 2nd time to fill it. */
3799 if ((arg->count_props >= props_count) && props_count) {
3801 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
3802 prop_values_ptr = (uint64_t __user *)(unsigned long)
3803 (arg->prop_values_ptr);
3804 for (i = 0; i < props_count; i++) {
3805 if (put_user(obj->properties->ids[i],
3806 props_ptr + copied)) {
3810 if (put_user(obj->properties->values[i],
3811 prop_values_ptr + copied)) {
3818 arg->count_props = props_count;
3820 drm_modeset_unlock_all(dev);
3825 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
3828 * @file_priv: DRM file info
3830 * This function sets the current value for an object's property. It also calls
3831 * into a driver's ->set_property callback to update the hardware state.
3832 * Compared to the connector specific ioctl this one is extended to also work on
3833 * crtc and plane objects.
3835 * Called by the user via ioctl.
3838 * Zero on success, errno on failure.
3840 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
3841 struct drm_file *file_priv)
3843 struct drm_mode_obj_set_property *arg = data;
3844 struct drm_mode_object *arg_obj;
3845 struct drm_mode_object *prop_obj;
3846 struct drm_property *property;
3850 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3853 drm_modeset_lock_all(dev);
3855 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
3860 if (!arg_obj->properties)
3863 for (i = 0; i < arg_obj->properties->count; i++)
3864 if (arg_obj->properties->ids[i] == arg->prop_id)
3867 if (i == arg_obj->properties->count)
3870 prop_obj = drm_mode_object_find(dev, arg->prop_id,
3871 DRM_MODE_OBJECT_PROPERTY);
3876 property = obj_to_property(prop_obj);
3878 if (!drm_property_change_is_valid(property, arg->value))
3881 switch (arg_obj->type) {
3882 case DRM_MODE_OBJECT_CONNECTOR:
3883 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
3886 case DRM_MODE_OBJECT_CRTC:
3887 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
3889 case DRM_MODE_OBJECT_PLANE:
3890 ret = drm_mode_plane_set_obj_prop(arg_obj, property, arg->value);
3895 drm_modeset_unlock_all(dev);
3900 * drm_mode_connector_attach_encoder - attach a connector to an encoder
3901 * @connector: connector to attach
3902 * @encoder: encoder to attach @connector to
3904 * This function links up a connector to an encoder. Note that the routing
3905 * restrictions between encoders and crtcs are exposed to userspace through the
3906 * possible_clones and possible_crtcs bitmasks.
3909 * Zero on success, errno on failure.
3911 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
3912 struct drm_encoder *encoder)
3916 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
3917 if (connector->encoder_ids[i] == 0) {
3918 connector->encoder_ids[i] = encoder->base.id;
3924 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
3927 * drm_mode_crtc_set_gamma_size - set the gamma table size
3928 * @crtc: CRTC to set the gamma table size for
3929 * @gamma_size: size of the gamma table
3931 * Drivers which support gamma tables should set this to the supported gamma
3932 * table size when initializing the CRTC. Currently the drm core only supports a
3933 * fixed gamma table size.
3936 * Zero on success, errno on failure.
3938 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
3941 crtc->gamma_size = gamma_size;
3943 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
3944 if (!crtc->gamma_store) {
3945 crtc->gamma_size = 0;
3951 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
3954 * drm_mode_gamma_set_ioctl - set the gamma table
3957 * @file_priv: DRM file info
3959 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
3960 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
3962 * Called by the user via ioctl.
3965 * Zero on success, errno on failure.
3967 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
3968 void *data, struct drm_file *file_priv)
3970 struct drm_mode_crtc_lut *crtc_lut = data;
3971 struct drm_crtc *crtc;
3972 void *r_base, *g_base, *b_base;
3976 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3979 drm_modeset_lock_all(dev);
3980 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
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_crtc *crtc;
4044 void *r_base, *g_base, *b_base;
4048 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4051 drm_modeset_lock_all(dev);
4052 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4058 /* memcpy into gamma store */
4059 if (crtc_lut->gamma_size != crtc->gamma_size) {
4064 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4065 r_base = crtc->gamma_store;
4066 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4071 g_base = r_base + size;
4072 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4077 b_base = g_base + size;
4078 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4083 drm_modeset_unlock_all(dev);
4088 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4091 * @file_priv: DRM file info
4093 * This schedules an asynchronous update on a given CRTC, called page flip.
4094 * Optionally a drm event is generated to signal the completion of the event.
4095 * Generic drivers cannot assume that a pageflip with changed framebuffer
4096 * properties (including driver specific metadata like tiling layout) will work,
4097 * but some drivers support e.g. pixel format changes through the pageflip
4100 * Called by the user via ioctl.
4103 * Zero on success, errno on failure.
4105 int drm_mode_page_flip_ioctl(struct drm_device *dev,
4106 void *data, struct drm_file *file_priv)
4108 struct drm_mode_crtc_page_flip *page_flip = data;
4109 struct drm_crtc *crtc;
4110 struct drm_framebuffer *fb = NULL, *old_fb = NULL;
4111 struct drm_pending_vblank_event *e = NULL;
4112 unsigned long flags;
4115 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4116 page_flip->reserved != 0)
4119 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4122 crtc = drm_crtc_find(dev, page_flip->crtc_id);
4126 mutex_lock(&crtc->mutex);
4127 if (crtc->primary->fb == NULL) {
4128 /* The framebuffer is currently unbound, presumably
4129 * due to a hotplug event, that userspace has not
4136 if (crtc->funcs->page_flip == NULL)
4139 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
4145 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4149 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
4150 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4155 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4157 spin_lock_irqsave(&dev->event_lock, flags);
4158 if (file_priv->event_space < sizeof e->event) {
4159 spin_unlock_irqrestore(&dev->event_lock, flags);
4162 file_priv->event_space -= sizeof e->event;
4163 spin_unlock_irqrestore(&dev->event_lock, flags);
4165 e = kzalloc(sizeof *e, GFP_KERNEL);
4167 spin_lock_irqsave(&dev->event_lock, flags);
4168 file_priv->event_space += sizeof e->event;
4169 spin_unlock_irqrestore(&dev->event_lock, flags);
4173 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
4174 e->event.base.length = sizeof e->event;
4175 e->event.user_data = page_flip->user_data;
4176 e->base.event = &e->event.base;
4177 e->base.file_priv = file_priv;
4179 (void (*) (struct drm_pending_event *)) kfree;
4182 old_fb = crtc->primary->fb;
4183 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
4185 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4186 spin_lock_irqsave(&dev->event_lock, flags);
4187 file_priv->event_space += sizeof e->event;
4188 spin_unlock_irqrestore(&dev->event_lock, flags);
4191 /* Keep the old fb, don't unref it. */
4195 * Warn if the driver hasn't properly updated the crtc->fb
4196 * field to reflect that the new framebuffer is now used.
4197 * Failing to do so will screw with the reference counting
4200 WARN_ON(crtc->primary->fb != fb);
4201 /* Unref only the old framebuffer. */
4207 drm_framebuffer_unreference(fb);
4209 drm_framebuffer_unreference(old_fb);
4210 mutex_unlock(&crtc->mutex);
4216 * drm_mode_config_reset - call ->reset callbacks
4219 * This functions calls all the crtc's, encoder's and connector's ->reset
4220 * callback. Drivers can use this in e.g. their driver load or resume code to
4221 * reset hardware and software state.
4223 void drm_mode_config_reset(struct drm_device *dev)
4225 struct drm_crtc *crtc;
4226 struct drm_encoder *encoder;
4227 struct drm_connector *connector;
4229 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4230 if (crtc->funcs->reset)
4231 crtc->funcs->reset(crtc);
4233 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4234 if (encoder->funcs->reset)
4235 encoder->funcs->reset(encoder);
4237 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4238 connector->status = connector_status_unknown;
4240 if (connector->funcs->reset)
4241 connector->funcs->reset(connector);
4244 EXPORT_SYMBOL(drm_mode_config_reset);
4247 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4250 * @file_priv: DRM file info
4252 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4253 * TTM or something else entirely) and returns the resulting buffer handle. This
4254 * handle can then be wrapped up into a framebuffer modeset object.
4256 * Note that userspace is not allowed to use such objects for render
4257 * acceleration - drivers must create their own private ioctls for such a use
4260 * Called by the user via ioctl.
4263 * Zero on success, errno on failure.
4265 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
4266 void *data, struct drm_file *file_priv)
4268 struct drm_mode_create_dumb *args = data;
4269 u32 cpp, stride, size;
4271 if (!dev->driver->dumb_create)
4273 if (!args->width || !args->height || !args->bpp)
4276 /* overflow checks for 32bit size calculations */
4277 cpp = DIV_ROUND_UP(args->bpp, 8);
4278 if (cpp > 0xffffffffU / args->width)
4280 stride = cpp * args->width;
4281 if (args->height > 0xffffffffU / stride)
4284 /* test for wrap-around */
4285 size = args->height * stride;
4286 if (PAGE_ALIGN(size) == 0)
4289 return dev->driver->dumb_create(file_priv, dev, args);
4293 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4296 * @file_priv: DRM file info
4298 * Allocate an offset in the drm device node's address space to be able to
4299 * memory map a dumb buffer.
4301 * Called by the user via ioctl.
4304 * Zero on success, errno on failure.
4306 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
4307 void *data, struct drm_file *file_priv)
4309 struct drm_mode_map_dumb *args = data;
4311 /* call driver ioctl to get mmap offset */
4312 if (!dev->driver->dumb_map_offset)
4315 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
4319 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4322 * @file_priv: DRM file info
4324 * This destroys the userspace handle for the given dumb backing storage buffer.
4325 * Since buffer objects must be reference counted in the kernel a buffer object
4326 * won't be immediately freed if a framebuffer modeset object still uses it.
4328 * Called by the user via ioctl.
4331 * Zero on success, errno on failure.
4333 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
4334 void *data, struct drm_file *file_priv)
4336 struct drm_mode_destroy_dumb *args = data;
4338 if (!dev->driver->dumb_destroy)
4341 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
4345 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4346 * @format: pixel format (DRM_FORMAT_*)
4347 * @depth: storage for the depth value
4348 * @bpp: storage for the bpp value
4350 * This only supports RGB formats here for compat with code that doesn't use
4351 * pixel formats directly yet.
4353 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
4358 case DRM_FORMAT_RGB332:
4359 case DRM_FORMAT_BGR233:
4363 case DRM_FORMAT_XRGB1555:
4364 case DRM_FORMAT_XBGR1555:
4365 case DRM_FORMAT_RGBX5551:
4366 case DRM_FORMAT_BGRX5551:
4367 case DRM_FORMAT_ARGB1555:
4368 case DRM_FORMAT_ABGR1555:
4369 case DRM_FORMAT_RGBA5551:
4370 case DRM_FORMAT_BGRA5551:
4374 case DRM_FORMAT_RGB565:
4375 case DRM_FORMAT_BGR565:
4379 case DRM_FORMAT_RGB888:
4380 case DRM_FORMAT_BGR888:
4384 case DRM_FORMAT_XRGB8888:
4385 case DRM_FORMAT_XBGR8888:
4386 case DRM_FORMAT_RGBX8888:
4387 case DRM_FORMAT_BGRX8888:
4391 case DRM_FORMAT_XRGB2101010:
4392 case DRM_FORMAT_XBGR2101010:
4393 case DRM_FORMAT_RGBX1010102:
4394 case DRM_FORMAT_BGRX1010102:
4395 case DRM_FORMAT_ARGB2101010:
4396 case DRM_FORMAT_ABGR2101010:
4397 case DRM_FORMAT_RGBA1010102:
4398 case DRM_FORMAT_BGRA1010102:
4402 case DRM_FORMAT_ARGB8888:
4403 case DRM_FORMAT_ABGR8888:
4404 case DRM_FORMAT_RGBA8888:
4405 case DRM_FORMAT_BGRA8888:
4410 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4411 drm_get_format_name(format));
4417 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
4420 * drm_format_num_planes - get the number of planes for format
4421 * @format: pixel format (DRM_FORMAT_*)
4424 * The number of planes used by the specified pixel format.
4426 int drm_format_num_planes(uint32_t format)
4429 case DRM_FORMAT_YUV410:
4430 case DRM_FORMAT_YVU410:
4431 case DRM_FORMAT_YUV411:
4432 case DRM_FORMAT_YVU411:
4433 case DRM_FORMAT_YUV420:
4434 case DRM_FORMAT_YVU420:
4435 case DRM_FORMAT_YUV422:
4436 case DRM_FORMAT_YVU422:
4437 case DRM_FORMAT_YUV444:
4438 case DRM_FORMAT_YVU444:
4440 case DRM_FORMAT_NV12:
4441 case DRM_FORMAT_NV21:
4442 case DRM_FORMAT_NV16:
4443 case DRM_FORMAT_NV61:
4444 case DRM_FORMAT_NV24:
4445 case DRM_FORMAT_NV42:
4451 EXPORT_SYMBOL(drm_format_num_planes);
4454 * drm_format_plane_cpp - determine the bytes per pixel value
4455 * @format: pixel format (DRM_FORMAT_*)
4456 * @plane: plane index
4459 * The bytes per pixel value for the specified plane.
4461 int drm_format_plane_cpp(uint32_t format, int plane)
4466 if (plane >= drm_format_num_planes(format))
4470 case DRM_FORMAT_YUYV:
4471 case DRM_FORMAT_YVYU:
4472 case DRM_FORMAT_UYVY:
4473 case DRM_FORMAT_VYUY:
4475 case DRM_FORMAT_NV12:
4476 case DRM_FORMAT_NV21:
4477 case DRM_FORMAT_NV16:
4478 case DRM_FORMAT_NV61:
4479 case DRM_FORMAT_NV24:
4480 case DRM_FORMAT_NV42:
4481 return plane ? 2 : 1;
4482 case DRM_FORMAT_YUV410:
4483 case DRM_FORMAT_YVU410:
4484 case DRM_FORMAT_YUV411:
4485 case DRM_FORMAT_YVU411:
4486 case DRM_FORMAT_YUV420:
4487 case DRM_FORMAT_YVU420:
4488 case DRM_FORMAT_YUV422:
4489 case DRM_FORMAT_YVU422:
4490 case DRM_FORMAT_YUV444:
4491 case DRM_FORMAT_YVU444:
4494 drm_fb_get_bpp_depth(format, &depth, &bpp);
4498 EXPORT_SYMBOL(drm_format_plane_cpp);
4501 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
4502 * @format: pixel format (DRM_FORMAT_*)
4505 * The horizontal chroma subsampling factor for the
4506 * specified pixel format.
4508 int drm_format_horz_chroma_subsampling(uint32_t format)
4511 case DRM_FORMAT_YUV411:
4512 case DRM_FORMAT_YVU411:
4513 case DRM_FORMAT_YUV410:
4514 case DRM_FORMAT_YVU410:
4516 case DRM_FORMAT_YUYV:
4517 case DRM_FORMAT_YVYU:
4518 case DRM_FORMAT_UYVY:
4519 case DRM_FORMAT_VYUY:
4520 case DRM_FORMAT_NV12:
4521 case DRM_FORMAT_NV21:
4522 case DRM_FORMAT_NV16:
4523 case DRM_FORMAT_NV61:
4524 case DRM_FORMAT_YUV422:
4525 case DRM_FORMAT_YVU422:
4526 case DRM_FORMAT_YUV420:
4527 case DRM_FORMAT_YVU420:
4533 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
4536 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
4537 * @format: pixel format (DRM_FORMAT_*)
4540 * The vertical chroma subsampling factor for the
4541 * specified pixel format.
4543 int drm_format_vert_chroma_subsampling(uint32_t format)
4546 case DRM_FORMAT_YUV410:
4547 case DRM_FORMAT_YVU410:
4549 case DRM_FORMAT_YUV420:
4550 case DRM_FORMAT_YVU420:
4551 case DRM_FORMAT_NV12:
4552 case DRM_FORMAT_NV21:
4558 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
4561 * drm_mode_config_init - initialize DRM mode_configuration structure
4564 * Initialize @dev's mode_config structure, used for tracking the graphics
4565 * configuration of @dev.
4567 * Since this initializes the modeset locks, no locking is possible. Which is no
4568 * problem, since this should happen single threaded at init time. It is the
4569 * driver's problem to ensure this guarantee.
4572 void drm_mode_config_init(struct drm_device *dev)
4574 mutex_init(&dev->mode_config.mutex);
4575 mutex_init(&dev->mode_config.idr_mutex);
4576 mutex_init(&dev->mode_config.fb_lock);
4577 INIT_LIST_HEAD(&dev->mode_config.fb_list);
4578 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
4579 INIT_LIST_HEAD(&dev->mode_config.connector_list);
4580 INIT_LIST_HEAD(&dev->mode_config.bridge_list);
4581 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
4582 INIT_LIST_HEAD(&dev->mode_config.property_list);
4583 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
4584 INIT_LIST_HEAD(&dev->mode_config.plane_list);
4585 idr_init(&dev->mode_config.crtc_idr);
4587 drm_modeset_lock_all(dev);
4588 drm_mode_create_standard_connector_properties(dev);
4589 drm_mode_create_standard_plane_properties(dev);
4590 drm_modeset_unlock_all(dev);
4592 /* Just to be sure */
4593 dev->mode_config.num_fb = 0;
4594 dev->mode_config.num_connector = 0;
4595 dev->mode_config.num_crtc = 0;
4596 dev->mode_config.num_encoder = 0;
4597 dev->mode_config.num_overlay_plane = 0;
4598 dev->mode_config.num_total_plane = 0;
4600 EXPORT_SYMBOL(drm_mode_config_init);
4603 * drm_mode_config_cleanup - free up DRM mode_config info
4606 * Free up all the connectors and CRTCs associated with this DRM device, then
4607 * free up the framebuffers and associated buffer objects.
4609 * Note that since this /should/ happen single-threaded at driver/device
4610 * teardown time, no locking is required. It's the driver's job to ensure that
4611 * this guarantee actually holds true.
4613 * FIXME: cleanup any dangling user buffer objects too
4615 void drm_mode_config_cleanup(struct drm_device *dev)
4617 struct drm_connector *connector, *ot;
4618 struct drm_crtc *crtc, *ct;
4619 struct drm_encoder *encoder, *enct;
4620 struct drm_bridge *bridge, *brt;
4621 struct drm_framebuffer *fb, *fbt;
4622 struct drm_property *property, *pt;
4623 struct drm_property_blob *blob, *bt;
4624 struct drm_plane *plane, *plt;
4626 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
4628 encoder->funcs->destroy(encoder);
4631 list_for_each_entry_safe(bridge, brt,
4632 &dev->mode_config.bridge_list, head) {
4633 bridge->funcs->destroy(bridge);
4636 list_for_each_entry_safe(connector, ot,
4637 &dev->mode_config.connector_list, head) {
4638 connector->funcs->destroy(connector);
4641 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
4643 drm_property_destroy(dev, property);
4646 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
4648 drm_property_destroy_blob(dev, blob);
4652 * Single-threaded teardown context, so it's not required to grab the
4653 * fb_lock to protect against concurrent fb_list access. Contrary, it
4654 * would actually deadlock with the drm_framebuffer_cleanup function.
4656 * Also, if there are any framebuffers left, that's a driver leak now,
4657 * so politely WARN about this.
4659 WARN_ON(!list_empty(&dev->mode_config.fb_list));
4660 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
4661 drm_framebuffer_remove(fb);
4664 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
4666 plane->funcs->destroy(plane);
4669 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
4670 crtc->funcs->destroy(crtc);
4673 idr_destroy(&dev->mode_config.crtc_idr);
4675 EXPORT_SYMBOL(drm_mode_config_cleanup);