2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
6 * DRM core CRTC related functions
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
32 #include <linux/ctype.h>
33 #include <linux/list.h>
34 #include <linux/slab.h>
35 #include <linux/export.h>
37 #include <drm/drm_crtc.h>
38 #include <drm/drm_edid.h>
39 #include <drm/drm_fourcc.h>
40 #include <drm/drm_modeset_lock.h>
42 #include "drm_crtc_internal.h"
43 #include "drm_internal.h"
45 static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
46 struct drm_mode_fb_cmd2 *r,
47 struct drm_file *file_priv);
49 /* Avoid boilerplate. I'm tired of typing. */
50 #define DRM_ENUM_NAME_FN(fnname, list) \
51 const char *fnname(int val) \
54 for (i = 0; i < ARRAY_SIZE(list); i++) { \
55 if (list[i].type == val) \
56 return list[i].name; \
64 static const struct drm_prop_enum_list drm_dpms_enum_list[] =
65 { { DRM_MODE_DPMS_ON, "On" },
66 { DRM_MODE_DPMS_STANDBY, "Standby" },
67 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
68 { DRM_MODE_DPMS_OFF, "Off" }
71 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
73 static const struct drm_prop_enum_list drm_plane_type_enum_list[] =
75 { DRM_PLANE_TYPE_OVERLAY, "Overlay" },
76 { DRM_PLANE_TYPE_PRIMARY, "Primary" },
77 { DRM_PLANE_TYPE_CURSOR, "Cursor" },
83 static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
85 { DRM_MODE_SCALE_NONE, "None" },
86 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
87 { DRM_MODE_SCALE_CENTER, "Center" },
88 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
91 static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = {
92 { DRM_MODE_PICTURE_ASPECT_NONE, "Automatic" },
93 { DRM_MODE_PICTURE_ASPECT_4_3, "4:3" },
94 { DRM_MODE_PICTURE_ASPECT_16_9, "16:9" },
98 * Non-global properties, but "required" for certain connectors.
100 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
102 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
103 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
104 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
107 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
109 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
111 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
112 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
113 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
116 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
117 drm_dvi_i_subconnector_enum_list)
119 static const struct drm_prop_enum_list drm_tv_select_enum_list[] =
121 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
122 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
123 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
124 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
125 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
128 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
130 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
132 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
133 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
134 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
135 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
136 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
139 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
140 drm_tv_subconnector_enum_list)
142 static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
143 { DRM_MODE_DIRTY_OFF, "Off" },
144 { DRM_MODE_DIRTY_ON, "On" },
145 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
148 struct drm_conn_prop_enum_list {
155 * Connector and encoder types.
157 static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
158 { { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
159 { DRM_MODE_CONNECTOR_VGA, "VGA" },
160 { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
161 { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
162 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
163 { DRM_MODE_CONNECTOR_Composite, "Composite" },
164 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
165 { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
166 { DRM_MODE_CONNECTOR_Component, "Component" },
167 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
168 { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
169 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
170 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
171 { DRM_MODE_CONNECTOR_TV, "TV" },
172 { DRM_MODE_CONNECTOR_eDP, "eDP" },
173 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
174 { DRM_MODE_CONNECTOR_DSI, "DSI" },
177 static const struct drm_prop_enum_list drm_encoder_enum_list[] =
178 { { DRM_MODE_ENCODER_NONE, "None" },
179 { DRM_MODE_ENCODER_DAC, "DAC" },
180 { DRM_MODE_ENCODER_TMDS, "TMDS" },
181 { DRM_MODE_ENCODER_LVDS, "LVDS" },
182 { DRM_MODE_ENCODER_TVDAC, "TV" },
183 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
184 { DRM_MODE_ENCODER_DSI, "DSI" },
185 { DRM_MODE_ENCODER_DPMST, "DP MST" },
188 static const struct drm_prop_enum_list drm_subpixel_enum_list[] =
190 { SubPixelUnknown, "Unknown" },
191 { SubPixelHorizontalRGB, "Horizontal RGB" },
192 { SubPixelHorizontalBGR, "Horizontal BGR" },
193 { SubPixelVerticalRGB, "Vertical RGB" },
194 { SubPixelVerticalBGR, "Vertical BGR" },
195 { SubPixelNone, "None" },
198 void drm_connector_ida_init(void)
202 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
203 ida_init(&drm_connector_enum_list[i].ida);
206 void drm_connector_ida_destroy(void)
210 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
211 ida_destroy(&drm_connector_enum_list[i].ida);
215 * drm_get_connector_status_name - return a string for connector status
216 * @status: connector status to compute name of
218 * In contrast to the other drm_get_*_name functions this one here returns a
219 * const pointer and hence is threadsafe.
221 const char *drm_get_connector_status_name(enum drm_connector_status status)
223 if (status == connector_status_connected)
225 else if (status == connector_status_disconnected)
226 return "disconnected";
230 EXPORT_SYMBOL(drm_get_connector_status_name);
233 * drm_get_subpixel_order_name - return a string for a given subpixel enum
234 * @order: enum of subpixel_order
236 * Note you could abuse this and return something out of bounds, but that
237 * would be a caller error. No unscrubbed user data should make it here.
239 const char *drm_get_subpixel_order_name(enum subpixel_order order)
241 return drm_subpixel_enum_list[order].name;
243 EXPORT_SYMBOL(drm_get_subpixel_order_name);
245 static char printable_char(int c)
247 return isascii(c) && isprint(c) ? c : '?';
251 * drm_get_format_name - return a string for drm fourcc format
252 * @format: format to compute name of
254 * Note that the buffer used by this function is globally shared and owned by
255 * the function itself.
257 * FIXME: This isn't really multithreading safe.
259 const char *drm_get_format_name(uint32_t format)
263 snprintf(buf, sizeof(buf),
264 "%c%c%c%c %s-endian (0x%08x)",
265 printable_char(format & 0xff),
266 printable_char((format >> 8) & 0xff),
267 printable_char((format >> 16) & 0xff),
268 printable_char((format >> 24) & 0x7f),
269 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
274 EXPORT_SYMBOL(drm_get_format_name);
277 * Internal function to assign a slot in the object idr and optionally
278 * register the object into the idr.
280 static int drm_mode_object_get_reg(struct drm_device *dev,
281 struct drm_mode_object *obj,
287 mutex_lock(&dev->mode_config.idr_mutex);
288 ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
291 * Set up the object linking under the protection of the idr
292 * lock so that other users can't see inconsistent state.
295 obj->type = obj_type;
297 mutex_unlock(&dev->mode_config.idr_mutex);
299 return ret < 0 ? ret : 0;
303 * drm_mode_object_get - allocate a new modeset identifier
305 * @obj: object pointer, used to generate unique ID
306 * @obj_type: object type
308 * Create a unique identifier based on @ptr in @dev's identifier space. Used
309 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
310 * modeset identifiers are _not_ reference counted. Hence don't use this for
311 * reference counted modeset objects like framebuffers.
314 * New unique (relative to other objects in @dev) integer identifier for the
317 int drm_mode_object_get(struct drm_device *dev,
318 struct drm_mode_object *obj, uint32_t obj_type)
320 return drm_mode_object_get_reg(dev, obj, obj_type, true);
323 static void drm_mode_object_register(struct drm_device *dev,
324 struct drm_mode_object *obj)
326 mutex_lock(&dev->mode_config.idr_mutex);
327 idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
328 mutex_unlock(&dev->mode_config.idr_mutex);
332 * drm_mode_object_put - free a modeset identifer
334 * @object: object to free
336 * Free @id from @dev's unique identifier pool. Note that despite the _get
337 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
338 * for reference counted modeset objects like framebuffers.
340 void drm_mode_object_put(struct drm_device *dev,
341 struct drm_mode_object *object)
343 mutex_lock(&dev->mode_config.idr_mutex);
344 idr_remove(&dev->mode_config.crtc_idr, object->id);
345 mutex_unlock(&dev->mode_config.idr_mutex);
348 static struct drm_mode_object *_object_find(struct drm_device *dev,
349 uint32_t id, uint32_t type)
351 struct drm_mode_object *obj = NULL;
353 mutex_lock(&dev->mode_config.idr_mutex);
354 obj = idr_find(&dev->mode_config.crtc_idr, id);
355 if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
357 if (obj && obj->id != id)
359 /* don't leak out unref'd fb's */
360 if (obj && (obj->type == DRM_MODE_OBJECT_FB))
362 mutex_unlock(&dev->mode_config.idr_mutex);
368 * drm_mode_object_find - look up a drm object with static lifetime
370 * @id: id of the mode object
371 * @type: type of the mode object
373 * Note that framebuffers cannot be looked up with this functions - since those
374 * are reference counted, they need special treatment. Even with
375 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
376 * rather than WARN_ON()).
378 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
379 uint32_t id, uint32_t type)
381 struct drm_mode_object *obj = NULL;
383 /* Framebuffers are reference counted and need their own lookup
385 WARN_ON(type == DRM_MODE_OBJECT_FB);
386 obj = _object_find(dev, id, type);
389 EXPORT_SYMBOL(drm_mode_object_find);
392 * drm_framebuffer_init - initialize a framebuffer
394 * @fb: framebuffer to be initialized
395 * @funcs: ... with these functions
397 * Allocates an ID for the framebuffer's parent mode object, sets its mode
398 * functions & device file and adds it to the master fd list.
401 * This functions publishes the fb and makes it available for concurrent access
402 * by other users. Which means by this point the fb _must_ be fully set up -
403 * since all the fb attributes are invariant over its lifetime, no further
404 * locking but only correct reference counting is required.
407 * Zero on success, error code on failure.
409 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
410 const struct drm_framebuffer_funcs *funcs)
414 mutex_lock(&dev->mode_config.fb_lock);
415 kref_init(&fb->refcount);
416 INIT_LIST_HEAD(&fb->filp_head);
420 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
424 dev->mode_config.num_fb++;
425 list_add(&fb->head, &dev->mode_config.fb_list);
427 mutex_unlock(&dev->mode_config.fb_lock);
431 EXPORT_SYMBOL(drm_framebuffer_init);
433 /* dev->mode_config.fb_lock must be held! */
434 static void __drm_framebuffer_unregister(struct drm_device *dev,
435 struct drm_framebuffer *fb)
437 mutex_lock(&dev->mode_config.idr_mutex);
438 idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
439 mutex_unlock(&dev->mode_config.idr_mutex);
444 static void drm_framebuffer_free(struct kref *kref)
446 struct drm_framebuffer *fb =
447 container_of(kref, struct drm_framebuffer, refcount);
448 struct drm_device *dev = fb->dev;
451 * The lookup idr holds a weak reference, which has not necessarily been
452 * removed at this point. Check for that.
454 mutex_lock(&dev->mode_config.fb_lock);
456 /* Mark fb as reaped and drop idr ref. */
457 __drm_framebuffer_unregister(dev, fb);
459 mutex_unlock(&dev->mode_config.fb_lock);
461 fb->funcs->destroy(fb);
464 static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
467 struct drm_mode_object *obj = NULL;
468 struct drm_framebuffer *fb;
470 mutex_lock(&dev->mode_config.idr_mutex);
471 obj = idr_find(&dev->mode_config.crtc_idr, id);
472 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
476 mutex_unlock(&dev->mode_config.idr_mutex);
482 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
484 * @id: id of the fb object
486 * If successful, this grabs an additional reference to the framebuffer -
487 * callers need to make sure to eventually unreference the returned framebuffer
488 * again, using @drm_framebuffer_unreference.
490 struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
493 struct drm_framebuffer *fb;
495 mutex_lock(&dev->mode_config.fb_lock);
496 fb = __drm_framebuffer_lookup(dev, id);
498 if (!kref_get_unless_zero(&fb->refcount))
501 mutex_unlock(&dev->mode_config.fb_lock);
505 EXPORT_SYMBOL(drm_framebuffer_lookup);
508 * drm_framebuffer_unreference - unref a framebuffer
509 * @fb: framebuffer to unref
511 * This functions decrements the fb's refcount and frees it if it drops to zero.
513 void drm_framebuffer_unreference(struct drm_framebuffer *fb)
515 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
516 kref_put(&fb->refcount, drm_framebuffer_free);
518 EXPORT_SYMBOL(drm_framebuffer_unreference);
521 * drm_framebuffer_reference - incr the fb refcnt
524 * This functions increments the fb's refcount.
526 void drm_framebuffer_reference(struct drm_framebuffer *fb)
528 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
529 kref_get(&fb->refcount);
531 EXPORT_SYMBOL(drm_framebuffer_reference);
533 static void drm_framebuffer_free_bug(struct kref *kref)
538 static void __drm_framebuffer_unreference(struct drm_framebuffer *fb)
540 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
541 kref_put(&fb->refcount, drm_framebuffer_free_bug);
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);
655 DEFINE_WW_CLASS(crtc_ww_class);
658 * drm_crtc_init_with_planes - Initialise a new CRTC object with
659 * specified primary and cursor planes.
661 * @crtc: CRTC object to init
662 * @primary: Primary plane for CRTC
663 * @cursor: Cursor plane for CRTC
664 * @funcs: callbacks for the new CRTC
666 * Inits a new object created as base part of a driver crtc object.
669 * Zero on success, error code on failure.
671 int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
672 struct drm_plane *primary,
673 struct drm_plane *cursor,
674 const struct drm_crtc_funcs *funcs)
676 struct drm_mode_config *config = &dev->mode_config;
681 crtc->invert_dimensions = false;
683 drm_modeset_lock_all(dev);
684 drm_modeset_lock_init(&crtc->mutex);
685 /* dropped by _unlock_all(): */
686 drm_modeset_lock(&crtc->mutex, config->acquire_ctx);
688 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
692 crtc->base.properties = &crtc->properties;
694 list_add_tail(&crtc->head, &config->crtc_list);
697 crtc->primary = primary;
698 crtc->cursor = cursor;
700 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
702 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
705 drm_modeset_unlock_all(dev);
709 EXPORT_SYMBOL(drm_crtc_init_with_planes);
712 * drm_crtc_cleanup - Clean up the core crtc usage
713 * @crtc: CRTC to cleanup
715 * This function cleans up @crtc and removes it from the DRM mode setting
716 * core. Note that the function does *not* free the crtc structure itself,
717 * this is the responsibility of the caller.
719 void drm_crtc_cleanup(struct drm_crtc *crtc)
721 struct drm_device *dev = crtc->dev;
723 kfree(crtc->gamma_store);
724 crtc->gamma_store = NULL;
726 drm_modeset_lock_fini(&crtc->mutex);
728 drm_mode_object_put(dev, &crtc->base);
729 list_del(&crtc->head);
730 dev->mode_config.num_crtc--;
732 EXPORT_SYMBOL(drm_crtc_cleanup);
735 * drm_crtc_index - find the index of a registered CRTC
736 * @crtc: CRTC to find index for
738 * Given a registered CRTC, return the index of that CRTC within a DRM
739 * device's list of CRTCs.
741 unsigned int drm_crtc_index(struct drm_crtc *crtc)
743 unsigned int index = 0;
744 struct drm_crtc *tmp;
746 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
755 EXPORT_SYMBOL(drm_crtc_index);
758 * drm_mode_remove - remove and free a mode
759 * @connector: connector list to modify
760 * @mode: mode to remove
762 * Remove @mode from @connector's mode list, then free it.
764 static void drm_mode_remove(struct drm_connector *connector,
765 struct drm_display_mode *mode)
767 list_del(&mode->head);
768 drm_mode_destroy(connector->dev, mode);
772 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
773 * @connector: connector to quwery
774 * @mode: returned mode
776 * The kernel supports per-connector configration of its consoles through
777 * use of the video= parameter. This function parses that option and
778 * extracts the user's specified mode (or enable/disable status) for a
779 * particular connector. This is typically only used during the early fbdev
782 static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
784 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
787 if (fb_get_options(connector->name, &option))
790 if (!drm_mode_parse_command_line_for_connector(option,
798 switch (mode->force) {
802 case DRM_FORCE_ON_DIGITAL:
811 DRM_INFO("forcing %s connector %s\n", connector->name, s);
812 connector->force = mode->force;
815 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
817 mode->xres, mode->yres,
818 mode->refresh_specified ? mode->refresh : 60,
819 mode->rb ? " reduced blanking" : "",
820 mode->margins ? " with margins" : "",
821 mode->interlace ? " interlaced" : "");
825 * drm_connector_init - Init a preallocated connector
827 * @connector: the connector to init
828 * @funcs: callbacks for this connector
829 * @connector_type: user visible type of the connector
831 * Initialises a preallocated connector. Connectors should be
832 * subclassed as part of driver connector objects.
835 * Zero on success, error code on failure.
837 int drm_connector_init(struct drm_device *dev,
838 struct drm_connector *connector,
839 const struct drm_connector_funcs *funcs,
843 struct ida *connector_ida =
844 &drm_connector_enum_list[connector_type].ida;
846 drm_modeset_lock_all(dev);
848 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false);
852 connector->base.properties = &connector->properties;
853 connector->dev = dev;
854 connector->funcs = funcs;
855 connector->connector_type = connector_type;
856 connector->connector_type_id =
857 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
858 if (connector->connector_type_id < 0) {
859 ret = connector->connector_type_id;
863 kasprintf(GFP_KERNEL, "%s-%d",
864 drm_connector_enum_list[connector_type].name,
865 connector->connector_type_id);
866 if (!connector->name) {
871 INIT_LIST_HEAD(&connector->probed_modes);
872 INIT_LIST_HEAD(&connector->modes);
873 connector->edid_blob_ptr = NULL;
874 connector->status = connector_status_unknown;
876 drm_connector_get_cmdline_mode(connector);
878 list_add_tail(&connector->head, &dev->mode_config.connector_list);
879 dev->mode_config.num_connector++;
881 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
882 drm_object_attach_property(&connector->base,
883 dev->mode_config.edid_property,
886 drm_object_attach_property(&connector->base,
887 dev->mode_config.dpms_property, 0);
889 connector->debugfs_entry = NULL;
893 drm_mode_object_put(dev, &connector->base);
896 drm_modeset_unlock_all(dev);
900 EXPORT_SYMBOL(drm_connector_init);
903 * drm_connector_cleanup - cleans up an initialised connector
904 * @connector: connector to cleanup
906 * Cleans up the connector but doesn't free the object.
908 void drm_connector_cleanup(struct drm_connector *connector)
910 struct drm_device *dev = connector->dev;
911 struct drm_display_mode *mode, *t;
913 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
914 drm_mode_remove(connector, mode);
916 list_for_each_entry_safe(mode, t, &connector->modes, head)
917 drm_mode_remove(connector, mode);
919 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
920 connector->connector_type_id);
922 drm_mode_object_put(dev, &connector->base);
923 kfree(connector->name);
924 connector->name = NULL;
925 list_del(&connector->head);
926 dev->mode_config.num_connector--;
928 EXPORT_SYMBOL(drm_connector_cleanup);
931 * drm_connector_index - find the index of a registered connector
932 * @connector: connector to find index for
934 * Given a registered connector, return the index of that connector within a DRM
935 * device's list of connectors.
937 unsigned int drm_connector_index(struct drm_connector *connector)
939 unsigned int index = 0;
940 struct drm_connector *tmp;
942 list_for_each_entry(tmp, &connector->dev->mode_config.connector_list, head) {
943 if (tmp == connector)
951 EXPORT_SYMBOL(drm_connector_index);
954 * drm_connector_register - register a connector
955 * @connector: the connector to register
957 * Register userspace interfaces for a connector
960 * Zero on success, error code on failure.
962 int drm_connector_register(struct drm_connector *connector)
966 drm_mode_object_register(connector->dev, &connector->base);
968 ret = drm_sysfs_connector_add(connector);
972 ret = drm_debugfs_connector_add(connector);
974 drm_sysfs_connector_remove(connector);
980 EXPORT_SYMBOL(drm_connector_register);
983 * drm_connector_unregister - unregister a connector
984 * @connector: the connector to unregister
986 * Unregister userspace interfaces for a connector
988 void drm_connector_unregister(struct drm_connector *connector)
990 drm_sysfs_connector_remove(connector);
991 drm_debugfs_connector_remove(connector);
993 EXPORT_SYMBOL(drm_connector_unregister);
997 * drm_connector_unplug_all - unregister connector userspace interfaces
1000 * This function unregisters all connector userspace interfaces in sysfs. Should
1001 * be call when the device is disconnected, e.g. from an usb driver's
1002 * ->disconnect callback.
1004 void drm_connector_unplug_all(struct drm_device *dev)
1006 struct drm_connector *connector;
1008 /* taking the mode config mutex ends up in a clash with sysfs */
1009 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1010 drm_connector_unregister(connector);
1013 EXPORT_SYMBOL(drm_connector_unplug_all);
1016 * drm_bridge_init - initialize a drm transcoder/bridge
1018 * @bridge: transcoder/bridge to set up
1019 * @funcs: bridge function table
1021 * Initialises a preallocated bridge. Bridges should be
1022 * subclassed as part of driver connector objects.
1025 * Zero on success, error code on failure.
1027 int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
1028 const struct drm_bridge_funcs *funcs)
1032 drm_modeset_lock_all(dev);
1034 ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
1039 bridge->funcs = funcs;
1041 list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
1042 dev->mode_config.num_bridge++;
1045 drm_modeset_unlock_all(dev);
1048 EXPORT_SYMBOL(drm_bridge_init);
1051 * drm_bridge_cleanup - cleans up an initialised bridge
1052 * @bridge: bridge to cleanup
1054 * Cleans up the bridge but doesn't free the object.
1056 void drm_bridge_cleanup(struct drm_bridge *bridge)
1058 struct drm_device *dev = bridge->dev;
1060 drm_modeset_lock_all(dev);
1061 drm_mode_object_put(dev, &bridge->base);
1062 list_del(&bridge->head);
1063 dev->mode_config.num_bridge--;
1064 drm_modeset_unlock_all(dev);
1066 EXPORT_SYMBOL(drm_bridge_cleanup);
1069 * drm_encoder_init - Init a preallocated encoder
1071 * @encoder: the encoder to init
1072 * @funcs: callbacks for this encoder
1073 * @encoder_type: user visible type of the encoder
1075 * Initialises a preallocated encoder. Encoder should be
1076 * subclassed as part of driver encoder objects.
1079 * Zero on success, error code on failure.
1081 int drm_encoder_init(struct drm_device *dev,
1082 struct drm_encoder *encoder,
1083 const struct drm_encoder_funcs *funcs,
1088 drm_modeset_lock_all(dev);
1090 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1095 encoder->encoder_type = encoder_type;
1096 encoder->funcs = funcs;
1097 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1098 drm_encoder_enum_list[encoder_type].name,
1100 if (!encoder->name) {
1105 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1106 dev->mode_config.num_encoder++;
1110 drm_mode_object_put(dev, &encoder->base);
1113 drm_modeset_unlock_all(dev);
1117 EXPORT_SYMBOL(drm_encoder_init);
1120 * drm_encoder_cleanup - cleans up an initialised encoder
1121 * @encoder: encoder to cleanup
1123 * Cleans up the encoder but doesn't free the object.
1125 void drm_encoder_cleanup(struct drm_encoder *encoder)
1127 struct drm_device *dev = encoder->dev;
1128 drm_modeset_lock_all(dev);
1129 drm_mode_object_put(dev, &encoder->base);
1130 kfree(encoder->name);
1131 encoder->name = NULL;
1132 list_del(&encoder->head);
1133 dev->mode_config.num_encoder--;
1134 drm_modeset_unlock_all(dev);
1136 EXPORT_SYMBOL(drm_encoder_cleanup);
1139 * drm_universal_plane_init - Initialize a new universal plane object
1141 * @plane: plane object to init
1142 * @possible_crtcs: bitmask of possible CRTCs
1143 * @funcs: callbacks for the new plane
1144 * @formats: array of supported formats (%DRM_FORMAT_*)
1145 * @format_count: number of elements in @formats
1146 * @type: type of plane (overlay, primary, cursor)
1148 * Initializes a plane object of type @type.
1151 * Zero on success, error code on failure.
1153 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1154 unsigned long possible_crtcs,
1155 const struct drm_plane_funcs *funcs,
1156 const uint32_t *formats, uint32_t format_count,
1157 enum drm_plane_type type)
1161 drm_modeset_lock_all(dev);
1163 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1167 plane->base.properties = &plane->properties;
1169 plane->funcs = funcs;
1170 plane->format_types = kmalloc(sizeof(uint32_t) * format_count,
1172 if (!plane->format_types) {
1173 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1174 drm_mode_object_put(dev, &plane->base);
1179 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1180 plane->format_count = format_count;
1181 plane->possible_crtcs = possible_crtcs;
1184 list_add_tail(&plane->head, &dev->mode_config.plane_list);
1185 dev->mode_config.num_total_plane++;
1186 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1187 dev->mode_config.num_overlay_plane++;
1189 drm_object_attach_property(&plane->base,
1190 dev->mode_config.plane_type_property,
1194 drm_modeset_unlock_all(dev);
1198 EXPORT_SYMBOL(drm_universal_plane_init);
1201 * drm_plane_init - Initialize a legacy plane
1203 * @plane: plane object to init
1204 * @possible_crtcs: bitmask of possible CRTCs
1205 * @funcs: callbacks for the new plane
1206 * @formats: array of supported formats (%DRM_FORMAT_*)
1207 * @format_count: number of elements in @formats
1208 * @is_primary: plane type (primary vs overlay)
1210 * Legacy API to initialize a DRM plane.
1212 * New drivers should call drm_universal_plane_init() instead.
1215 * Zero on success, error code on failure.
1217 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1218 unsigned long possible_crtcs,
1219 const struct drm_plane_funcs *funcs,
1220 const uint32_t *formats, uint32_t format_count,
1223 enum drm_plane_type type;
1225 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1226 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1227 formats, format_count, type);
1229 EXPORT_SYMBOL(drm_plane_init);
1232 * drm_plane_cleanup - Clean up the core plane usage
1233 * @plane: plane to cleanup
1235 * This function cleans up @plane and removes it from the DRM mode setting
1236 * core. Note that the function does *not* free the plane structure itself,
1237 * this is the responsibility of the caller.
1239 void drm_plane_cleanup(struct drm_plane *plane)
1241 struct drm_device *dev = plane->dev;
1243 drm_modeset_lock_all(dev);
1244 kfree(plane->format_types);
1245 drm_mode_object_put(dev, &plane->base);
1247 BUG_ON(list_empty(&plane->head));
1249 list_del(&plane->head);
1250 dev->mode_config.num_total_plane--;
1251 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1252 dev->mode_config.num_overlay_plane--;
1253 drm_modeset_unlock_all(dev);
1255 EXPORT_SYMBOL(drm_plane_cleanup);
1258 * drm_plane_index - find the index of a registered plane
1259 * @plane: plane to find index for
1261 * Given a registered plane, return the index of that CRTC within a DRM
1262 * device's list of planes.
1264 unsigned int drm_plane_index(struct drm_plane *plane)
1266 unsigned int index = 0;
1267 struct drm_plane *tmp;
1269 list_for_each_entry(tmp, &plane->dev->mode_config.plane_list, head) {
1278 EXPORT_SYMBOL(drm_plane_index);
1281 * drm_plane_force_disable - Forcibly disable a plane
1282 * @plane: plane to disable
1284 * Forces the plane to be disabled.
1286 * Used when the plane's current framebuffer is destroyed,
1287 * and when restoring fbdev mode.
1289 void drm_plane_force_disable(struct drm_plane *plane)
1296 plane->old_fb = plane->fb;
1297 ret = plane->funcs->disable_plane(plane);
1299 DRM_ERROR("failed to disable plane with busy fb\n");
1300 plane->old_fb = NULL;
1303 /* disconnect the plane from the fb and crtc: */
1304 __drm_framebuffer_unreference(plane->old_fb);
1305 plane->old_fb = NULL;
1309 EXPORT_SYMBOL(drm_plane_force_disable);
1311 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
1313 struct drm_property *edid;
1314 struct drm_property *dpms;
1315 struct drm_property *dev_path;
1318 * Standard properties (apply to all connectors)
1320 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1321 DRM_MODE_PROP_IMMUTABLE,
1323 dev->mode_config.edid_property = edid;
1325 dpms = drm_property_create_enum(dev, 0,
1326 "DPMS", drm_dpms_enum_list,
1327 ARRAY_SIZE(drm_dpms_enum_list));
1328 dev->mode_config.dpms_property = dpms;
1330 dev_path = drm_property_create(dev,
1331 DRM_MODE_PROP_BLOB |
1332 DRM_MODE_PROP_IMMUTABLE,
1334 dev->mode_config.path_property = dev_path;
1339 static int drm_mode_create_standard_plane_properties(struct drm_device *dev)
1341 struct drm_property *type;
1344 * Standard properties (apply to all planes)
1346 type = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1347 "type", drm_plane_type_enum_list,
1348 ARRAY_SIZE(drm_plane_type_enum_list));
1349 dev->mode_config.plane_type_property = type;
1355 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1358 * Called by a driver the first time a DVI-I connector is made.
1360 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1362 struct drm_property *dvi_i_selector;
1363 struct drm_property *dvi_i_subconnector;
1365 if (dev->mode_config.dvi_i_select_subconnector_property)
1369 drm_property_create_enum(dev, 0,
1370 "select subconnector",
1371 drm_dvi_i_select_enum_list,
1372 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1373 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1375 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1377 drm_dvi_i_subconnector_enum_list,
1378 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1379 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1383 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1386 * drm_create_tv_properties - create TV specific connector properties
1388 * @num_modes: number of different TV formats (modes) supported
1389 * @modes: array of pointers to strings containing name of each format
1391 * Called by a driver's TV initialization routine, this function creates
1392 * the TV specific connector properties for a given device. Caller is
1393 * responsible for allocating a list of format names and passing them to
1396 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
1399 struct drm_property *tv_selector;
1400 struct drm_property *tv_subconnector;
1403 if (dev->mode_config.tv_select_subconnector_property)
1407 * Basic connector properties
1409 tv_selector = drm_property_create_enum(dev, 0,
1410 "select subconnector",
1411 drm_tv_select_enum_list,
1412 ARRAY_SIZE(drm_tv_select_enum_list));
1413 dev->mode_config.tv_select_subconnector_property = tv_selector;
1416 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1418 drm_tv_subconnector_enum_list,
1419 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1420 dev->mode_config.tv_subconnector_property = tv_subconnector;
1423 * Other, TV specific properties: margins & TV modes.
1425 dev->mode_config.tv_left_margin_property =
1426 drm_property_create_range(dev, 0, "left margin", 0, 100);
1428 dev->mode_config.tv_right_margin_property =
1429 drm_property_create_range(dev, 0, "right margin", 0, 100);
1431 dev->mode_config.tv_top_margin_property =
1432 drm_property_create_range(dev, 0, "top margin", 0, 100);
1434 dev->mode_config.tv_bottom_margin_property =
1435 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1437 dev->mode_config.tv_mode_property =
1438 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1440 for (i = 0; i < num_modes; i++)
1441 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1444 dev->mode_config.tv_brightness_property =
1445 drm_property_create_range(dev, 0, "brightness", 0, 100);
1447 dev->mode_config.tv_contrast_property =
1448 drm_property_create_range(dev, 0, "contrast", 0, 100);
1450 dev->mode_config.tv_flicker_reduction_property =
1451 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1453 dev->mode_config.tv_overscan_property =
1454 drm_property_create_range(dev, 0, "overscan", 0, 100);
1456 dev->mode_config.tv_saturation_property =
1457 drm_property_create_range(dev, 0, "saturation", 0, 100);
1459 dev->mode_config.tv_hue_property =
1460 drm_property_create_range(dev, 0, "hue", 0, 100);
1464 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1467 * drm_mode_create_scaling_mode_property - create scaling mode property
1470 * Called by a driver the first time it's needed, must be attached to desired
1473 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1475 struct drm_property *scaling_mode;
1477 if (dev->mode_config.scaling_mode_property)
1481 drm_property_create_enum(dev, 0, "scaling mode",
1482 drm_scaling_mode_enum_list,
1483 ARRAY_SIZE(drm_scaling_mode_enum_list));
1485 dev->mode_config.scaling_mode_property = scaling_mode;
1489 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1492 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1495 * Called by a driver the first time it's needed, must be attached to desired
1499 * Zero on success, errno on failure.
1501 int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1503 if (dev->mode_config.aspect_ratio_property)
1506 dev->mode_config.aspect_ratio_property =
1507 drm_property_create_enum(dev, 0, "aspect ratio",
1508 drm_aspect_ratio_enum_list,
1509 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1511 if (dev->mode_config.aspect_ratio_property == NULL)
1516 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1519 * drm_mode_create_dirty_property - create dirty property
1522 * Called by a driver the first time it's needed, must be attached to desired
1525 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1527 struct drm_property *dirty_info;
1529 if (dev->mode_config.dirty_info_property)
1533 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1535 drm_dirty_info_enum_list,
1536 ARRAY_SIZE(drm_dirty_info_enum_list));
1537 dev->mode_config.dirty_info_property = dirty_info;
1541 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1543 static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
1545 uint32_t total_objects = 0;
1547 total_objects += dev->mode_config.num_crtc;
1548 total_objects += dev->mode_config.num_connector;
1549 total_objects += dev->mode_config.num_encoder;
1550 total_objects += dev->mode_config.num_bridge;
1552 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
1553 if (!group->id_list)
1556 group->num_crtcs = 0;
1557 group->num_connectors = 0;
1558 group->num_encoders = 0;
1559 group->num_bridges = 0;
1563 void drm_mode_group_destroy(struct drm_mode_group *group)
1565 kfree(group->id_list);
1566 group->id_list = NULL;
1570 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1571 * the drm core's responsibility to set up mode control groups.
1573 int drm_mode_group_init_legacy_group(struct drm_device *dev,
1574 struct drm_mode_group *group)
1576 struct drm_crtc *crtc;
1577 struct drm_encoder *encoder;
1578 struct drm_connector *connector;
1579 struct drm_bridge *bridge;
1582 if ((ret = drm_mode_group_init(dev, group)))
1585 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1586 group->id_list[group->num_crtcs++] = crtc->base.id;
1588 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1589 group->id_list[group->num_crtcs + group->num_encoders++] =
1592 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1593 group->id_list[group->num_crtcs + group->num_encoders +
1594 group->num_connectors++] = connector->base.id;
1596 list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
1597 group->id_list[group->num_crtcs + group->num_encoders +
1598 group->num_connectors + group->num_bridges++] =
1603 EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
1605 void drm_reinit_primary_mode_group(struct drm_device *dev)
1607 drm_modeset_lock_all(dev);
1608 drm_mode_group_destroy(&dev->primary->mode_group);
1609 drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
1610 drm_modeset_unlock_all(dev);
1612 EXPORT_SYMBOL(drm_reinit_primary_mode_group);
1615 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1616 * @out: drm_mode_modeinfo struct to return to the user
1617 * @in: drm_display_mode to use
1619 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1622 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1623 const struct drm_display_mode *in)
1625 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1626 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1627 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1628 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1629 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1630 "timing values too large for mode info\n");
1632 out->clock = in->clock;
1633 out->hdisplay = in->hdisplay;
1634 out->hsync_start = in->hsync_start;
1635 out->hsync_end = in->hsync_end;
1636 out->htotal = in->htotal;
1637 out->hskew = in->hskew;
1638 out->vdisplay = in->vdisplay;
1639 out->vsync_start = in->vsync_start;
1640 out->vsync_end = in->vsync_end;
1641 out->vtotal = in->vtotal;
1642 out->vscan = in->vscan;
1643 out->vrefresh = in->vrefresh;
1644 out->flags = in->flags;
1645 out->type = in->type;
1646 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1647 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1651 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1652 * @out: drm_display_mode to return to the user
1653 * @in: drm_mode_modeinfo to use
1655 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1659 * Zero on success, errno on failure.
1661 static int drm_crtc_convert_umode(struct drm_display_mode *out,
1662 const struct drm_mode_modeinfo *in)
1664 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1667 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1670 out->clock = in->clock;
1671 out->hdisplay = in->hdisplay;
1672 out->hsync_start = in->hsync_start;
1673 out->hsync_end = in->hsync_end;
1674 out->htotal = in->htotal;
1675 out->hskew = in->hskew;
1676 out->vdisplay = in->vdisplay;
1677 out->vsync_start = in->vsync_start;
1678 out->vsync_end = in->vsync_end;
1679 out->vtotal = in->vtotal;
1680 out->vscan = in->vscan;
1681 out->vrefresh = in->vrefresh;
1682 out->flags = in->flags;
1683 out->type = in->type;
1684 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1685 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1691 * drm_mode_getresources - get graphics configuration
1692 * @dev: drm device for the ioctl
1693 * @data: data pointer for the ioctl
1694 * @file_priv: drm file for the ioctl call
1696 * Construct a set of configuration description structures and return
1697 * them to the user, including CRTC, connector and framebuffer configuration.
1699 * Called by the user via ioctl.
1702 * Zero on success, errno on failure.
1704 int drm_mode_getresources(struct drm_device *dev, void *data,
1705 struct drm_file *file_priv)
1707 struct drm_mode_card_res *card_res = data;
1708 struct list_head *lh;
1709 struct drm_framebuffer *fb;
1710 struct drm_connector *connector;
1711 struct drm_crtc *crtc;
1712 struct drm_encoder *encoder;
1714 int connector_count = 0;
1717 int encoder_count = 0;
1719 uint32_t __user *fb_id;
1720 uint32_t __user *crtc_id;
1721 uint32_t __user *connector_id;
1722 uint32_t __user *encoder_id;
1723 struct drm_mode_group *mode_group;
1725 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1729 mutex_lock(&file_priv->fbs_lock);
1731 * For the non-control nodes we need to limit the list of resources
1732 * by IDs in the group list for this node
1734 list_for_each(lh, &file_priv->fbs)
1737 /* handle this in 4 parts */
1739 if (card_res->count_fbs >= fb_count) {
1741 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1742 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1743 if (put_user(fb->base.id, fb_id + copied)) {
1744 mutex_unlock(&file_priv->fbs_lock);
1750 card_res->count_fbs = fb_count;
1751 mutex_unlock(&file_priv->fbs_lock);
1753 drm_modeset_lock_all(dev);
1754 if (!drm_is_primary_client(file_priv)) {
1757 list_for_each(lh, &dev->mode_config.crtc_list)
1760 list_for_each(lh, &dev->mode_config.connector_list)
1763 list_for_each(lh, &dev->mode_config.encoder_list)
1767 mode_group = &file_priv->master->minor->mode_group;
1768 crtc_count = mode_group->num_crtcs;
1769 connector_count = mode_group->num_connectors;
1770 encoder_count = mode_group->num_encoders;
1773 card_res->max_height = dev->mode_config.max_height;
1774 card_res->min_height = dev->mode_config.min_height;
1775 card_res->max_width = dev->mode_config.max_width;
1776 card_res->min_width = dev->mode_config.min_width;
1779 if (card_res->count_crtcs >= crtc_count) {
1781 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1783 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1785 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1786 if (put_user(crtc->base.id, crtc_id + copied)) {
1793 for (i = 0; i < mode_group->num_crtcs; i++) {
1794 if (put_user(mode_group->id_list[i],
1795 crtc_id + copied)) {
1803 card_res->count_crtcs = crtc_count;
1806 if (card_res->count_encoders >= encoder_count) {
1808 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1810 list_for_each_entry(encoder,
1811 &dev->mode_config.encoder_list,
1813 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1815 if (put_user(encoder->base.id, encoder_id +
1823 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1824 if (put_user(mode_group->id_list[i],
1825 encoder_id + copied)) {
1834 card_res->count_encoders = encoder_count;
1837 if (card_res->count_connectors >= connector_count) {
1839 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1841 list_for_each_entry(connector,
1842 &dev->mode_config.connector_list,
1844 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1847 if (put_user(connector->base.id,
1848 connector_id + copied)) {
1855 int start = mode_group->num_crtcs +
1856 mode_group->num_encoders;
1857 for (i = start; i < start + mode_group->num_connectors; i++) {
1858 if (put_user(mode_group->id_list[i],
1859 connector_id + copied)) {
1867 card_res->count_connectors = connector_count;
1869 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1870 card_res->count_connectors, card_res->count_encoders);
1873 drm_modeset_unlock_all(dev);
1878 * drm_mode_getcrtc - get CRTC configuration
1879 * @dev: drm device for the ioctl
1880 * @data: data pointer for the ioctl
1881 * @file_priv: drm file for the ioctl call
1883 * Construct a CRTC configuration structure to return to the user.
1885 * Called by the user via ioctl.
1888 * Zero on success, errno on failure.
1890 int drm_mode_getcrtc(struct drm_device *dev,
1891 void *data, struct drm_file *file_priv)
1893 struct drm_mode_crtc *crtc_resp = data;
1894 struct drm_crtc *crtc;
1897 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1900 drm_modeset_lock_all(dev);
1902 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
1908 crtc_resp->x = crtc->x;
1909 crtc_resp->y = crtc->y;
1910 crtc_resp->gamma_size = crtc->gamma_size;
1911 if (crtc->primary->fb)
1912 crtc_resp->fb_id = crtc->primary->fb->base.id;
1914 crtc_resp->fb_id = 0;
1916 if (crtc->enabled) {
1918 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1919 crtc_resp->mode_valid = 1;
1922 crtc_resp->mode_valid = 0;
1926 drm_modeset_unlock_all(dev);
1930 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1931 const struct drm_file *file_priv)
1934 * If user-space hasn't configured the driver to expose the stereo 3D
1935 * modes, don't expose them.
1937 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1944 * drm_mode_getconnector - get connector configuration
1945 * @dev: drm device for the ioctl
1946 * @data: data pointer for the ioctl
1947 * @file_priv: drm file for the ioctl call
1949 * Construct a connector configuration structure to return to the user.
1951 * Called by the user via ioctl.
1954 * Zero on success, errno on failure.
1956 int drm_mode_getconnector(struct drm_device *dev, void *data,
1957 struct drm_file *file_priv)
1959 struct drm_mode_get_connector *out_resp = data;
1960 struct drm_connector *connector;
1961 struct drm_display_mode *mode;
1963 int props_count = 0;
1964 int encoders_count = 0;
1968 struct drm_mode_modeinfo u_mode;
1969 struct drm_mode_modeinfo __user *mode_ptr;
1970 uint32_t __user *prop_ptr;
1971 uint64_t __user *prop_values;
1972 uint32_t __user *encoder_ptr;
1974 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1977 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1979 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1981 mutex_lock(&dev->mode_config.mutex);
1983 connector = drm_connector_find(dev, out_resp->connector_id);
1989 props_count = connector->properties.count;
1991 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1992 if (connector->encoder_ids[i] != 0) {
1997 if (out_resp->count_modes == 0) {
1998 connector->funcs->fill_modes(connector,
1999 dev->mode_config.max_width,
2000 dev->mode_config.max_height);
2003 /* delayed so we get modes regardless of pre-fill_modes state */
2004 list_for_each_entry(mode, &connector->modes, head)
2005 if (drm_mode_expose_to_userspace(mode, file_priv))
2008 out_resp->connector_id = connector->base.id;
2009 out_resp->connector_type = connector->connector_type;
2010 out_resp->connector_type_id = connector->connector_type_id;
2011 out_resp->mm_width = connector->display_info.width_mm;
2012 out_resp->mm_height = connector->display_info.height_mm;
2013 out_resp->subpixel = connector->display_info.subpixel_order;
2014 out_resp->connection = connector->status;
2015 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2016 if (connector->encoder)
2017 out_resp->encoder_id = connector->encoder->base.id;
2019 out_resp->encoder_id = 0;
2020 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2023 * This ioctl is called twice, once to determine how much space is
2024 * needed, and the 2nd time to fill it.
2026 if ((out_resp->count_modes >= mode_count) && mode_count) {
2028 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
2029 list_for_each_entry(mode, &connector->modes, head) {
2030 if (!drm_mode_expose_to_userspace(mode, file_priv))
2033 drm_crtc_convert_to_umode(&u_mode, mode);
2034 if (copy_to_user(mode_ptr + copied,
2035 &u_mode, sizeof(u_mode))) {
2042 out_resp->count_modes = mode_count;
2044 if ((out_resp->count_props >= props_count) && props_count) {
2046 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
2047 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
2048 for (i = 0; i < connector->properties.count; i++) {
2049 if (put_user(connector->properties.ids[i],
2050 prop_ptr + copied)) {
2055 if (put_user(connector->properties.values[i],
2056 prop_values + copied)) {
2063 out_resp->count_props = props_count;
2065 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2067 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
2068 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2069 if (connector->encoder_ids[i] != 0) {
2070 if (put_user(connector->encoder_ids[i],
2071 encoder_ptr + copied)) {
2079 out_resp->count_encoders = encoders_count;
2082 mutex_unlock(&dev->mode_config.mutex);
2088 * drm_mode_getencoder - get encoder configuration
2089 * @dev: drm device for the ioctl
2090 * @data: data pointer for the ioctl
2091 * @file_priv: drm file for the ioctl call
2093 * Construct a encoder configuration structure to return to the user.
2095 * Called by the user via ioctl.
2098 * Zero on success, errno on failure.
2100 int drm_mode_getencoder(struct drm_device *dev, void *data,
2101 struct drm_file *file_priv)
2103 struct drm_mode_get_encoder *enc_resp = data;
2104 struct drm_encoder *encoder;
2107 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2110 drm_modeset_lock_all(dev);
2111 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
2118 enc_resp->crtc_id = encoder->crtc->base.id;
2120 enc_resp->crtc_id = 0;
2121 enc_resp->encoder_type = encoder->encoder_type;
2122 enc_resp->encoder_id = encoder->base.id;
2123 enc_resp->possible_crtcs = encoder->possible_crtcs;
2124 enc_resp->possible_clones = encoder->possible_clones;
2127 drm_modeset_unlock_all(dev);
2132 * drm_mode_getplane_res - enumerate all plane resources
2135 * @file_priv: DRM file info
2137 * Construct a list of plane ids to return to the user.
2139 * Called by the user via ioctl.
2142 * Zero on success, errno on failure.
2144 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2145 struct drm_file *file_priv)
2147 struct drm_mode_get_plane_res *plane_resp = data;
2148 struct drm_mode_config *config;
2149 struct drm_plane *plane;
2150 uint32_t __user *plane_ptr;
2151 int copied = 0, ret = 0;
2152 unsigned num_planes;
2154 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2157 drm_modeset_lock_all(dev);
2158 config = &dev->mode_config;
2160 if (file_priv->universal_planes)
2161 num_planes = config->num_total_plane;
2163 num_planes = config->num_overlay_plane;
2166 * This ioctl is called twice, once to determine how much space is
2167 * needed, and the 2nd time to fill it.
2170 (plane_resp->count_planes >= num_planes)) {
2171 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2173 list_for_each_entry(plane, &config->plane_list, head) {
2175 * Unless userspace set the 'universal planes'
2176 * capability bit, only advertise overlays.
2178 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2179 !file_priv->universal_planes)
2182 if (put_user(plane->base.id, plane_ptr + copied)) {
2189 plane_resp->count_planes = num_planes;
2192 drm_modeset_unlock_all(dev);
2197 * drm_mode_getplane - get plane configuration
2200 * @file_priv: DRM file info
2202 * Construct a plane configuration structure to return to the user.
2204 * Called by the user via ioctl.
2207 * Zero on success, errno on failure.
2209 int drm_mode_getplane(struct drm_device *dev, void *data,
2210 struct drm_file *file_priv)
2212 struct drm_mode_get_plane *plane_resp = data;
2213 struct drm_plane *plane;
2214 uint32_t __user *format_ptr;
2217 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2220 drm_modeset_lock_all(dev);
2221 plane = drm_plane_find(dev, plane_resp->plane_id);
2228 plane_resp->crtc_id = plane->crtc->base.id;
2230 plane_resp->crtc_id = 0;
2233 plane_resp->fb_id = plane->fb->base.id;
2235 plane_resp->fb_id = 0;
2237 plane_resp->plane_id = plane->base.id;
2238 plane_resp->possible_crtcs = plane->possible_crtcs;
2239 plane_resp->gamma_size = 0;
2242 * This ioctl is called twice, once to determine how much space is
2243 * needed, and the 2nd time to fill it.
2245 if (plane->format_count &&
2246 (plane_resp->count_format_types >= plane->format_count)) {
2247 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2248 if (copy_to_user(format_ptr,
2249 plane->format_types,
2250 sizeof(uint32_t) * plane->format_count)) {
2255 plane_resp->count_format_types = plane->format_count;
2258 drm_modeset_unlock_all(dev);
2263 * setplane_internal - setplane handler for internal callers
2265 * Note that we assume an extra reference has already been taken on fb. If the
2266 * update fails, this reference will be dropped before return; if it succeeds,
2267 * the previous framebuffer (if any) will be unreferenced instead.
2269 * src_{x,y,w,h} are provided in 16.16 fixed point format
2271 static int setplane_internal(struct drm_plane *plane,
2272 struct drm_crtc *crtc,
2273 struct drm_framebuffer *fb,
2274 int32_t crtc_x, int32_t crtc_y,
2275 uint32_t crtc_w, uint32_t crtc_h,
2276 /* src_{x,y,w,h} values are 16.16 fixed point */
2277 uint32_t src_x, uint32_t src_y,
2278 uint32_t src_w, uint32_t src_h)
2280 struct drm_device *dev = plane->dev;
2282 unsigned int fb_width, fb_height;
2285 drm_modeset_lock_all(dev);
2286 /* No fb means shut it down */
2288 plane->old_fb = plane->fb;
2289 ret = plane->funcs->disable_plane(plane);
2294 plane->old_fb = NULL;
2299 /* Check whether this plane is usable on this CRTC */
2300 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2301 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2306 /* Check whether this plane supports the fb pixel format. */
2307 for (i = 0; i < plane->format_count; i++)
2308 if (fb->pixel_format == plane->format_types[i])
2310 if (i == plane->format_count) {
2311 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2312 drm_get_format_name(fb->pixel_format));
2317 fb_width = fb->width << 16;
2318 fb_height = fb->height << 16;
2320 /* Make sure source coordinates are inside the fb. */
2321 if (src_w > fb_width ||
2322 src_x > fb_width - src_w ||
2323 src_h > fb_height ||
2324 src_y > fb_height - src_h) {
2325 DRM_DEBUG_KMS("Invalid source coordinates "
2326 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2327 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2328 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2329 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2330 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2335 plane->old_fb = plane->fb;
2336 ret = plane->funcs->update_plane(plane, crtc, fb,
2337 crtc_x, crtc_y, crtc_w, crtc_h,
2338 src_x, src_y, src_w, src_h);
2344 plane->old_fb = NULL;
2349 drm_framebuffer_unreference(fb);
2351 drm_framebuffer_unreference(plane->old_fb);
2352 plane->old_fb = NULL;
2353 drm_modeset_unlock_all(dev);
2360 * drm_mode_setplane - configure a plane's configuration
2362 * @data: ioctl data*
2363 * @file_priv: DRM file info
2365 * Set plane configuration, including placement, fb, scaling, and other factors.
2366 * Or pass a NULL fb to disable (planes may be disabled without providing a
2370 * Zero on success, errno on failure.
2372 int drm_mode_setplane(struct drm_device *dev, void *data,
2373 struct drm_file *file_priv)
2375 struct drm_mode_set_plane *plane_req = data;
2376 struct drm_mode_object *obj;
2377 struct drm_plane *plane;
2378 struct drm_crtc *crtc = NULL;
2379 struct drm_framebuffer *fb = NULL;
2381 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2384 /* Give drivers some help against integer overflows */
2385 if (plane_req->crtc_w > INT_MAX ||
2386 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2387 plane_req->crtc_h > INT_MAX ||
2388 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2389 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2390 plane_req->crtc_w, plane_req->crtc_h,
2391 plane_req->crtc_x, plane_req->crtc_y);
2396 * First, find the plane, crtc, and fb objects. If not available,
2397 * we don't bother to call the driver.
2399 obj = drm_mode_object_find(dev, plane_req->plane_id,
2400 DRM_MODE_OBJECT_PLANE);
2402 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2403 plane_req->plane_id);
2406 plane = obj_to_plane(obj);
2408 if (plane_req->fb_id) {
2409 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2411 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2416 obj = drm_mode_object_find(dev, plane_req->crtc_id,
2417 DRM_MODE_OBJECT_CRTC);
2419 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2420 plane_req->crtc_id);
2423 crtc = obj_to_crtc(obj);
2427 * setplane_internal will take care of deref'ing either the old or new
2428 * framebuffer depending on success.
2430 return setplane_internal(plane, crtc, fb,
2431 plane_req->crtc_x, plane_req->crtc_y,
2432 plane_req->crtc_w, plane_req->crtc_h,
2433 plane_req->src_x, plane_req->src_y,
2434 plane_req->src_w, plane_req->src_h);
2438 * drm_mode_set_config_internal - helper to call ->set_config
2439 * @set: modeset config to set
2441 * This is a little helper to wrap internal calls to the ->set_config driver
2442 * interface. The only thing it adds is correct refcounting dance.
2445 * Zero on success, errno on failure.
2447 int drm_mode_set_config_internal(struct drm_mode_set *set)
2449 struct drm_crtc *crtc = set->crtc;
2450 struct drm_framebuffer *fb;
2451 struct drm_crtc *tmp;
2455 * NOTE: ->set_config can also disable other crtcs (if we steal all
2456 * connectors from it), hence we need to refcount the fbs across all
2457 * crtcs. Atomic modeset will have saner semantics ...
2459 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
2460 tmp->primary->old_fb = tmp->primary->fb;
2464 ret = crtc->funcs->set_config(set);
2466 crtc->primary->crtc = crtc;
2467 crtc->primary->fb = fb;
2470 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
2471 if (tmp->primary->fb)
2472 drm_framebuffer_reference(tmp->primary->fb);
2473 if (tmp->primary->old_fb)
2474 drm_framebuffer_unreference(tmp->primary->old_fb);
2475 tmp->primary->old_fb = NULL;
2480 EXPORT_SYMBOL(drm_mode_set_config_internal);
2483 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2485 * @crtc: CRTC that framebuffer will be displayed on
2488 * @mode: mode that framebuffer will be displayed under
2489 * @fb: framebuffer to check size of
2491 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2493 const struct drm_display_mode *mode,
2494 const struct drm_framebuffer *fb)
2497 int hdisplay, vdisplay;
2499 hdisplay = mode->hdisplay;
2500 vdisplay = mode->vdisplay;
2502 if (drm_mode_is_stereo(mode)) {
2503 struct drm_display_mode adjusted = *mode;
2505 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE);
2506 hdisplay = adjusted.crtc_hdisplay;
2507 vdisplay = adjusted.crtc_vdisplay;
2510 if (crtc->invert_dimensions)
2511 swap(hdisplay, vdisplay);
2513 if (hdisplay > fb->width ||
2514 vdisplay > fb->height ||
2515 x > fb->width - hdisplay ||
2516 y > fb->height - vdisplay) {
2517 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2518 fb->width, fb->height, hdisplay, vdisplay, x, y,
2519 crtc->invert_dimensions ? " (inverted)" : "");
2525 EXPORT_SYMBOL(drm_crtc_check_viewport);
2528 * drm_mode_setcrtc - set CRTC configuration
2529 * @dev: drm device for the ioctl
2530 * @data: data pointer for the ioctl
2531 * @file_priv: drm file for the ioctl call
2533 * Build a new CRTC configuration based on user request.
2535 * Called by the user via ioctl.
2538 * Zero on success, errno on failure.
2540 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2541 struct drm_file *file_priv)
2543 struct drm_mode_config *config = &dev->mode_config;
2544 struct drm_mode_crtc *crtc_req = data;
2545 struct drm_crtc *crtc;
2546 struct drm_connector **connector_set = NULL, *connector;
2547 struct drm_framebuffer *fb = NULL;
2548 struct drm_display_mode *mode = NULL;
2549 struct drm_mode_set set;
2550 uint32_t __user *set_connectors_ptr;
2554 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2557 /* For some reason crtc x/y offsets are signed internally. */
2558 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2561 drm_modeset_lock_all(dev);
2562 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2564 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2568 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2570 if (crtc_req->mode_valid) {
2571 /* If we have a mode we need a framebuffer. */
2572 /* If we pass -1, set the mode with the currently bound fb */
2573 if (crtc_req->fb_id == -1) {
2574 if (!crtc->primary->fb) {
2575 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2579 fb = crtc->primary->fb;
2580 /* Make refcounting symmetric with the lookup path. */
2581 drm_framebuffer_reference(fb);
2583 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2585 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2592 mode = drm_mode_create(dev);
2598 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2600 DRM_DEBUG_KMS("Invalid mode\n");
2604 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2606 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2613 if (crtc_req->count_connectors == 0 && mode) {
2614 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2619 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2620 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2621 crtc_req->count_connectors);
2626 if (crtc_req->count_connectors > 0) {
2629 /* Avoid unbounded kernel memory allocation */
2630 if (crtc_req->count_connectors > config->num_connector) {
2635 connector_set = kmalloc(crtc_req->count_connectors *
2636 sizeof(struct drm_connector *),
2638 if (!connector_set) {
2643 for (i = 0; i < crtc_req->count_connectors; i++) {
2644 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2645 if (get_user(out_id, &set_connectors_ptr[i])) {
2650 connector = drm_connector_find(dev, out_id);
2652 DRM_DEBUG_KMS("Connector id %d unknown\n",
2657 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2661 connector_set[i] = connector;
2666 set.x = crtc_req->x;
2667 set.y = crtc_req->y;
2669 set.connectors = connector_set;
2670 set.num_connectors = crtc_req->count_connectors;
2672 ret = drm_mode_set_config_internal(&set);
2676 drm_framebuffer_unreference(fb);
2678 kfree(connector_set);
2679 drm_mode_destroy(dev, mode);
2680 drm_modeset_unlock_all(dev);
2685 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2686 * universal plane handler call
2687 * @crtc: crtc to update cursor for
2688 * @req: data pointer for the ioctl
2689 * @file_priv: drm file for the ioctl call
2691 * Legacy cursor ioctl's work directly with driver buffer handles. To
2692 * translate legacy ioctl calls into universal plane handler calls, we need to
2693 * wrap the native buffer handle in a drm_framebuffer.
2695 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2696 * buffer with a pitch of 4*width; the universal plane interface should be used
2697 * directly in cases where the hardware can support other buffer settings and
2698 * userspace wants to make use of these capabilities.
2701 * Zero on success, errno on failure.
2703 static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2704 struct drm_mode_cursor2 *req,
2705 struct drm_file *file_priv)
2707 struct drm_device *dev = crtc->dev;
2708 struct drm_framebuffer *fb = NULL;
2709 struct drm_mode_fb_cmd2 fbreq = {
2710 .width = req->width,
2711 .height = req->height,
2712 .pixel_format = DRM_FORMAT_ARGB8888,
2713 .pitches = { req->width * 4 },
2714 .handles = { req->handle },
2716 int32_t crtc_x, crtc_y;
2717 uint32_t crtc_w = 0, crtc_h = 0;
2718 uint32_t src_w = 0, src_h = 0;
2721 BUG_ON(!crtc->cursor);
2724 * Obtain fb we'll be using (either new or existing) and take an extra
2725 * reference to it if fb != null. setplane will take care of dropping
2726 * the reference if the plane update fails.
2728 if (req->flags & DRM_MODE_CURSOR_BO) {
2730 fb = add_framebuffer_internal(dev, &fbreq, file_priv);
2732 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2736 drm_framebuffer_reference(fb);
2741 mutex_lock(&dev->mode_config.mutex);
2742 fb = crtc->cursor->fb;
2744 drm_framebuffer_reference(fb);
2745 mutex_unlock(&dev->mode_config.mutex);
2748 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2752 crtc_x = crtc->cursor_x;
2753 crtc_y = crtc->cursor_y;
2758 crtc_h = fb->height;
2759 src_w = fb->width << 16;
2760 src_h = fb->height << 16;
2764 * setplane_internal will take care of deref'ing either the old or new
2765 * framebuffer depending on success.
2767 ret = setplane_internal(crtc->cursor, crtc, fb,
2768 crtc_x, crtc_y, crtc_w, crtc_h,
2769 0, 0, src_w, src_h);
2771 /* Update successful; save new cursor position, if necessary */
2772 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2773 crtc->cursor_x = req->x;
2774 crtc->cursor_y = req->y;
2780 static int drm_mode_cursor_common(struct drm_device *dev,
2781 struct drm_mode_cursor2 *req,
2782 struct drm_file *file_priv)
2784 struct drm_crtc *crtc;
2787 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2790 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2793 crtc = drm_crtc_find(dev, req->crtc_id);
2795 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2800 * If this crtc has a universal cursor plane, call that plane's update
2801 * handler rather than using legacy cursor handlers.
2804 return drm_mode_cursor_universal(crtc, req, file_priv);
2806 drm_modeset_lock_crtc(crtc);
2807 if (req->flags & DRM_MODE_CURSOR_BO) {
2808 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
2812 /* Turns off the cursor if handle is 0 */
2813 if (crtc->funcs->cursor_set2)
2814 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2815 req->width, req->height, req->hot_x, req->hot_y);
2817 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2818 req->width, req->height);
2821 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2822 if (crtc->funcs->cursor_move) {
2823 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2830 drm_modeset_unlock_crtc(crtc);
2838 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2839 * @dev: drm device for the ioctl
2840 * @data: data pointer for the ioctl
2841 * @file_priv: drm file for the ioctl call
2843 * Set the cursor configuration based on user request.
2845 * Called by the user via ioctl.
2848 * Zero on success, errno on failure.
2850 int drm_mode_cursor_ioctl(struct drm_device *dev,
2851 void *data, struct drm_file *file_priv)
2853 struct drm_mode_cursor *req = data;
2854 struct drm_mode_cursor2 new_req;
2856 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2857 new_req.hot_x = new_req.hot_y = 0;
2859 return drm_mode_cursor_common(dev, &new_req, file_priv);
2863 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2864 * @dev: drm device for the ioctl
2865 * @data: data pointer for the ioctl
2866 * @file_priv: drm file for the ioctl call
2868 * Set the cursor configuration based on user request. This implements the 2nd
2869 * version of the cursor ioctl, which allows userspace to additionally specify
2870 * the hotspot of the pointer.
2872 * Called by the user via ioctl.
2875 * Zero on success, errno on failure.
2877 int drm_mode_cursor2_ioctl(struct drm_device *dev,
2878 void *data, struct drm_file *file_priv)
2880 struct drm_mode_cursor2 *req = data;
2881 return drm_mode_cursor_common(dev, req, file_priv);
2885 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2886 * @bpp: bits per pixels
2887 * @depth: bit depth per pixel
2889 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2890 * Useful in fbdev emulation code, since that deals in those values.
2892 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2898 fmt = DRM_FORMAT_C8;
2902 fmt = DRM_FORMAT_XRGB1555;
2904 fmt = DRM_FORMAT_RGB565;
2907 fmt = DRM_FORMAT_RGB888;
2911 fmt = DRM_FORMAT_XRGB8888;
2912 else if (depth == 30)
2913 fmt = DRM_FORMAT_XRGB2101010;
2915 fmt = DRM_FORMAT_ARGB8888;
2918 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2919 fmt = DRM_FORMAT_XRGB8888;
2925 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
2928 * drm_mode_addfb - add an FB to the graphics configuration
2929 * @dev: drm device for the ioctl
2930 * @data: data pointer for the ioctl
2931 * @file_priv: drm file for the ioctl call
2933 * Add a new FB to the specified CRTC, given a user request. This is the
2934 * original addfb ioclt which only supported RGB formats.
2936 * Called by the user via ioctl.
2939 * Zero on success, errno on failure.
2941 int drm_mode_addfb(struct drm_device *dev,
2942 void *data, struct drm_file *file_priv)
2944 struct drm_mode_fb_cmd *or = data;
2945 struct drm_mode_fb_cmd2 r = {};
2946 struct drm_mode_config *config = &dev->mode_config;
2947 struct drm_framebuffer *fb;
2950 /* Use new struct with format internally */
2951 r.fb_id = or->fb_id;
2952 r.width = or->width;
2953 r.height = or->height;
2954 r.pitches[0] = or->pitch;
2955 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
2956 r.handles[0] = or->handle;
2958 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2961 if ((config->min_width > r.width) || (r.width > config->max_width))
2964 if ((config->min_height > r.height) || (r.height > config->max_height))
2967 fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r);
2969 DRM_DEBUG_KMS("could not create framebuffer\n");
2973 mutex_lock(&file_priv->fbs_lock);
2974 or->fb_id = fb->base.id;
2975 list_add(&fb->filp_head, &file_priv->fbs);
2976 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2977 mutex_unlock(&file_priv->fbs_lock);
2982 static int format_check(const struct drm_mode_fb_cmd2 *r)
2984 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
2988 case DRM_FORMAT_RGB332:
2989 case DRM_FORMAT_BGR233:
2990 case DRM_FORMAT_XRGB4444:
2991 case DRM_FORMAT_XBGR4444:
2992 case DRM_FORMAT_RGBX4444:
2993 case DRM_FORMAT_BGRX4444:
2994 case DRM_FORMAT_ARGB4444:
2995 case DRM_FORMAT_ABGR4444:
2996 case DRM_FORMAT_RGBA4444:
2997 case DRM_FORMAT_BGRA4444:
2998 case DRM_FORMAT_XRGB1555:
2999 case DRM_FORMAT_XBGR1555:
3000 case DRM_FORMAT_RGBX5551:
3001 case DRM_FORMAT_BGRX5551:
3002 case DRM_FORMAT_ARGB1555:
3003 case DRM_FORMAT_ABGR1555:
3004 case DRM_FORMAT_RGBA5551:
3005 case DRM_FORMAT_BGRA5551:
3006 case DRM_FORMAT_RGB565:
3007 case DRM_FORMAT_BGR565:
3008 case DRM_FORMAT_RGB888:
3009 case DRM_FORMAT_BGR888:
3010 case DRM_FORMAT_XRGB8888:
3011 case DRM_FORMAT_XBGR8888:
3012 case DRM_FORMAT_RGBX8888:
3013 case DRM_FORMAT_BGRX8888:
3014 case DRM_FORMAT_ARGB8888:
3015 case DRM_FORMAT_ABGR8888:
3016 case DRM_FORMAT_RGBA8888:
3017 case DRM_FORMAT_BGRA8888:
3018 case DRM_FORMAT_XRGB2101010:
3019 case DRM_FORMAT_XBGR2101010:
3020 case DRM_FORMAT_RGBX1010102:
3021 case DRM_FORMAT_BGRX1010102:
3022 case DRM_FORMAT_ARGB2101010:
3023 case DRM_FORMAT_ABGR2101010:
3024 case DRM_FORMAT_RGBA1010102:
3025 case DRM_FORMAT_BGRA1010102:
3026 case DRM_FORMAT_YUYV:
3027 case DRM_FORMAT_YVYU:
3028 case DRM_FORMAT_UYVY:
3029 case DRM_FORMAT_VYUY:
3030 case DRM_FORMAT_AYUV:
3031 case DRM_FORMAT_NV12:
3032 case DRM_FORMAT_NV21:
3033 case DRM_FORMAT_NV16:
3034 case DRM_FORMAT_NV61:
3035 case DRM_FORMAT_NV24:
3036 case DRM_FORMAT_NV42:
3037 case DRM_FORMAT_YUV410:
3038 case DRM_FORMAT_YVU410:
3039 case DRM_FORMAT_YUV411:
3040 case DRM_FORMAT_YVU411:
3041 case DRM_FORMAT_YUV420:
3042 case DRM_FORMAT_YVU420:
3043 case DRM_FORMAT_YUV422:
3044 case DRM_FORMAT_YVU422:
3045 case DRM_FORMAT_YUV444:
3046 case DRM_FORMAT_YVU444:
3049 DRM_DEBUG_KMS("invalid pixel format %s\n",
3050 drm_get_format_name(r->pixel_format));
3055 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
3057 int ret, hsub, vsub, num_planes, i;
3059 ret = format_check(r);
3061 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3062 drm_get_format_name(r->pixel_format));
3066 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3067 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3068 num_planes = drm_format_num_planes(r->pixel_format);
3070 if (r->width == 0 || r->width % hsub) {
3071 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->height);
3075 if (r->height == 0 || r->height % vsub) {
3076 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
3080 for (i = 0; i < num_planes; i++) {
3081 unsigned int width = r->width / (i != 0 ? hsub : 1);
3082 unsigned int height = r->height / (i != 0 ? vsub : 1);
3083 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
3085 if (!r->handles[i]) {
3086 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
3090 if ((uint64_t) width * cpp > UINT_MAX)
3093 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3096 if (r->pitches[i] < width * cpp) {
3097 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
3105 static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
3106 struct drm_mode_fb_cmd2 *r,
3107 struct drm_file *file_priv)
3109 struct drm_mode_config *config = &dev->mode_config;
3110 struct drm_framebuffer *fb;
3113 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
3114 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
3115 return ERR_PTR(-EINVAL);
3118 if ((config->min_width > r->width) || (r->width > config->max_width)) {
3119 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3120 r->width, config->min_width, config->max_width);
3121 return ERR_PTR(-EINVAL);
3123 if ((config->min_height > r->height) || (r->height > config->max_height)) {
3124 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3125 r->height, config->min_height, config->max_height);
3126 return ERR_PTR(-EINVAL);
3129 ret = framebuffer_check(r);
3131 return ERR_PTR(ret);
3133 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
3135 DRM_DEBUG_KMS("could not create framebuffer\n");
3139 mutex_lock(&file_priv->fbs_lock);
3140 r->fb_id = fb->base.id;
3141 list_add(&fb->filp_head, &file_priv->fbs);
3142 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3143 mutex_unlock(&file_priv->fbs_lock);
3149 * drm_mode_addfb2 - add an FB to the graphics configuration
3150 * @dev: drm device for the ioctl
3151 * @data: data pointer for the ioctl
3152 * @file_priv: drm file for the ioctl call
3154 * Add a new FB to the specified CRTC, given a user request with format. This is
3155 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3156 * and uses fourcc codes as pixel format specifiers.
3158 * Called by the user via ioctl.
3161 * Zero on success, errno on failure.
3163 int drm_mode_addfb2(struct drm_device *dev,
3164 void *data, struct drm_file *file_priv)
3166 struct drm_framebuffer *fb;
3168 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3171 fb = add_framebuffer_internal(dev, data, file_priv);
3179 * drm_mode_rmfb - remove an FB from the configuration
3180 * @dev: drm device for the ioctl
3181 * @data: data pointer for the ioctl
3182 * @file_priv: drm file for the ioctl call
3184 * Remove the FB specified by the user.
3186 * Called by the user via ioctl.
3189 * Zero on success, errno on failure.
3191 int drm_mode_rmfb(struct drm_device *dev,
3192 void *data, struct drm_file *file_priv)
3194 struct drm_framebuffer *fb = NULL;
3195 struct drm_framebuffer *fbl = NULL;
3196 uint32_t *id = data;
3199 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3202 mutex_lock(&file_priv->fbs_lock);
3203 mutex_lock(&dev->mode_config.fb_lock);
3204 fb = __drm_framebuffer_lookup(dev, *id);
3208 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3214 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3215 __drm_framebuffer_unregister(dev, fb);
3217 list_del_init(&fb->filp_head);
3218 mutex_unlock(&dev->mode_config.fb_lock);
3219 mutex_unlock(&file_priv->fbs_lock);
3221 drm_framebuffer_remove(fb);
3226 mutex_unlock(&dev->mode_config.fb_lock);
3227 mutex_unlock(&file_priv->fbs_lock);
3233 * drm_mode_getfb - get FB info
3234 * @dev: drm device for the ioctl
3235 * @data: data pointer for the ioctl
3236 * @file_priv: drm file for the ioctl call
3238 * Lookup the FB given its ID and return info about it.
3240 * Called by the user via ioctl.
3243 * Zero on success, errno on failure.
3245 int drm_mode_getfb(struct drm_device *dev,
3246 void *data, struct drm_file *file_priv)
3248 struct drm_mode_fb_cmd *r = data;
3249 struct drm_framebuffer *fb;
3252 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3255 fb = drm_framebuffer_lookup(dev, r->fb_id);
3259 r->height = fb->height;
3260 r->width = fb->width;
3261 r->depth = fb->depth;
3262 r->bpp = fb->bits_per_pixel;
3263 r->pitch = fb->pitches[0];
3264 if (fb->funcs->create_handle) {
3265 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
3266 drm_is_control_client(file_priv)) {
3267 ret = fb->funcs->create_handle(fb, file_priv,
3270 /* GET_FB() is an unprivileged ioctl so we must not
3271 * return a buffer-handle to non-master processes! For
3272 * backwards-compatibility reasons, we cannot make
3273 * GET_FB() privileged, so just return an invalid handle
3274 * for non-masters. */
3282 drm_framebuffer_unreference(fb);
3288 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3289 * @dev: drm device for the ioctl
3290 * @data: data pointer for the ioctl
3291 * @file_priv: drm file for the ioctl call
3293 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3294 * rectangle list. Generic userspace which does frontbuffer rendering must call
3295 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3296 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3298 * Modesetting drivers which always update the frontbuffer do not need to
3299 * implement the corresponding ->dirty framebuffer callback.
3301 * Called by the user via ioctl.
3304 * Zero on success, errno on failure.
3306 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3307 void *data, struct drm_file *file_priv)
3309 struct drm_clip_rect __user *clips_ptr;
3310 struct drm_clip_rect *clips = NULL;
3311 struct drm_mode_fb_dirty_cmd *r = data;
3312 struct drm_framebuffer *fb;
3317 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3320 fb = drm_framebuffer_lookup(dev, r->fb_id);
3324 num_clips = r->num_clips;
3325 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3327 if (!num_clips != !clips_ptr) {
3332 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3334 /* If userspace annotates copy, clips must come in pairs */
3335 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3340 if (num_clips && clips_ptr) {
3341 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3345 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
3351 ret = copy_from_user(clips, clips_ptr,
3352 num_clips * sizeof(*clips));
3359 if (fb->funcs->dirty) {
3360 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3369 drm_framebuffer_unreference(fb);
3376 * drm_fb_release - remove and free the FBs on this file
3377 * @priv: drm file for the ioctl
3379 * Destroy all the FBs associated with @filp.
3381 * Called by the user via ioctl.
3384 * Zero on success, errno on failure.
3386 void drm_fb_release(struct drm_file *priv)
3388 struct drm_device *dev = priv->minor->dev;
3389 struct drm_framebuffer *fb, *tfb;
3391 mutex_lock(&priv->fbs_lock);
3392 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3394 mutex_lock(&dev->mode_config.fb_lock);
3395 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3396 __drm_framebuffer_unregister(dev, fb);
3397 mutex_unlock(&dev->mode_config.fb_lock);
3399 list_del_init(&fb->filp_head);
3401 /* This will also drop the fpriv->fbs reference. */
3402 drm_framebuffer_remove(fb);
3404 mutex_unlock(&priv->fbs_lock);
3408 * drm_property_create - create a new property type
3410 * @flags: flags specifying the property type
3411 * @name: name of the property
3412 * @num_values: number of pre-defined values
3414 * This creates a new generic drm property which can then be attached to a drm
3415 * object with drm_object_attach_property. The returned property object must be
3416 * freed with drm_property_destroy.
3419 * A pointer to the newly created property on success, NULL on failure.
3421 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3422 const char *name, int num_values)
3424 struct drm_property *property = NULL;
3427 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3431 property->dev = dev;
3434 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
3435 if (!property->values)
3439 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3443 property->flags = flags;
3444 property->num_values = num_values;
3445 INIT_LIST_HEAD(&property->enum_blob_list);
3448 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3449 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3452 list_add_tail(&property->head, &dev->mode_config.property_list);
3454 WARN_ON(!drm_property_type_valid(property));
3458 kfree(property->values);
3462 EXPORT_SYMBOL(drm_property_create);
3465 * drm_property_create_enum - create a new enumeration property type
3467 * @flags: flags specifying the property type
3468 * @name: name of the property
3469 * @props: enumeration lists with property values
3470 * @num_values: number of pre-defined values
3472 * This creates a new generic drm property which can then be attached to a drm
3473 * object with drm_object_attach_property. The returned property object must be
3474 * freed with drm_property_destroy.
3476 * Userspace is only allowed to set one of the predefined values for enumeration
3480 * A pointer to the newly created property on success, NULL on failure.
3482 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3484 const struct drm_prop_enum_list *props,
3487 struct drm_property *property;
3490 flags |= DRM_MODE_PROP_ENUM;
3492 property = drm_property_create(dev, flags, name, num_values);
3496 for (i = 0; i < num_values; i++) {
3497 ret = drm_property_add_enum(property, i,
3501 drm_property_destroy(dev, property);
3508 EXPORT_SYMBOL(drm_property_create_enum);
3511 * drm_property_create_bitmask - create a new bitmask property type
3513 * @flags: flags specifying the property type
3514 * @name: name of the property
3515 * @props: enumeration lists with property bitflags
3516 * @num_props: size of the @props array
3517 * @supported_bits: bitmask of all supported enumeration values
3519 * This creates a new bitmask drm property which can then be attached to a drm
3520 * object with drm_object_attach_property. The returned property object must be
3521 * freed with drm_property_destroy.
3523 * Compared to plain enumeration properties userspace is allowed to set any
3524 * or'ed together combination of the predefined property bitflag values
3527 * A pointer to the newly created property on success, NULL on failure.
3529 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3530 int flags, const char *name,
3531 const struct drm_prop_enum_list *props,
3533 uint64_t supported_bits)
3535 struct drm_property *property;
3536 int i, ret, index = 0;
3537 int num_values = hweight64(supported_bits);
3539 flags |= DRM_MODE_PROP_BITMASK;
3541 property = drm_property_create(dev, flags, name, num_values);
3544 for (i = 0; i < num_props; i++) {
3545 if (!(supported_bits & (1ULL << props[i].type)))
3548 if (WARN_ON(index >= num_values)) {
3549 drm_property_destroy(dev, property);
3553 ret = drm_property_add_enum(property, index++,
3557 drm_property_destroy(dev, property);
3564 EXPORT_SYMBOL(drm_property_create_bitmask);
3566 static struct drm_property *property_create_range(struct drm_device *dev,
3567 int flags, const char *name,
3568 uint64_t min, uint64_t max)
3570 struct drm_property *property;
3572 property = drm_property_create(dev, flags, name, 2);
3576 property->values[0] = min;
3577 property->values[1] = max;
3583 * drm_property_create_range - create a new ranged property type
3585 * @flags: flags specifying the property type
3586 * @name: name of the property
3587 * @min: minimum value of the property
3588 * @max: maximum value of the property
3590 * This creates a new generic drm property which can then be attached to a drm
3591 * object with drm_object_attach_property. The returned property object must be
3592 * freed with drm_property_destroy.
3594 * Userspace is allowed to set any interger value in the (min, max) range
3598 * A pointer to the newly created property on success, NULL on failure.
3600 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3602 uint64_t min, uint64_t max)
3604 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3607 EXPORT_SYMBOL(drm_property_create_range);
3609 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3610 int flags, const char *name,
3611 int64_t min, int64_t max)
3613 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3614 name, I642U64(min), I642U64(max));
3616 EXPORT_SYMBOL(drm_property_create_signed_range);
3618 struct drm_property *drm_property_create_object(struct drm_device *dev,
3619 int flags, const char *name, uint32_t type)
3621 struct drm_property *property;
3623 flags |= DRM_MODE_PROP_OBJECT;
3625 property = drm_property_create(dev, flags, name, 1);
3629 property->values[0] = type;
3633 EXPORT_SYMBOL(drm_property_create_object);
3636 * drm_property_add_enum - add a possible value to an enumeration property
3637 * @property: enumeration property to change
3638 * @index: index of the new enumeration
3639 * @value: value of the new enumeration
3640 * @name: symbolic name of the new enumeration
3642 * This functions adds enumerations to a property.
3644 * It's use is deprecated, drivers should use one of the more specific helpers
3645 * to directly create the property with all enumerations already attached.
3648 * Zero on success, error code on failure.
3650 int drm_property_add_enum(struct drm_property *property, int index,
3651 uint64_t value, const char *name)
3653 struct drm_property_enum *prop_enum;
3655 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3656 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
3660 * Bitmask enum properties have the additional constraint of values
3663 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3667 if (!list_empty(&property->enum_blob_list)) {
3668 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3669 if (prop_enum->value == value) {
3670 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3671 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3677 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3681 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3682 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3683 prop_enum->value = value;
3685 property->values[index] = value;
3686 list_add_tail(&prop_enum->head, &property->enum_blob_list);
3689 EXPORT_SYMBOL(drm_property_add_enum);
3692 * drm_property_destroy - destroy a drm property
3694 * @property: property to destry
3696 * This function frees a property including any attached resources like
3697 * enumeration values.
3699 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3701 struct drm_property_enum *prop_enum, *pt;
3703 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
3704 list_del(&prop_enum->head);
3708 if (property->num_values)
3709 kfree(property->values);
3710 drm_mode_object_put(dev, &property->base);
3711 list_del(&property->head);
3714 EXPORT_SYMBOL(drm_property_destroy);
3717 * drm_object_attach_property - attach a property to a modeset object
3718 * @obj: drm modeset object
3719 * @property: property to attach
3720 * @init_val: initial value of the property
3722 * This attaches the given property to the modeset object with the given initial
3723 * value. Currently this function cannot fail since the properties are stored in
3724 * a statically sized array.
3726 void drm_object_attach_property(struct drm_mode_object *obj,
3727 struct drm_property *property,
3730 int count = obj->properties->count;
3732 if (count == DRM_OBJECT_MAX_PROPERTY) {
3733 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3734 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3735 "you see this message on the same object type.\n",
3740 obj->properties->ids[count] = property->base.id;
3741 obj->properties->values[count] = init_val;
3742 obj->properties->count++;
3744 EXPORT_SYMBOL(drm_object_attach_property);
3747 * drm_object_property_set_value - set the value of a property
3748 * @obj: drm mode object to set property value for
3749 * @property: property to set
3750 * @val: value the property should be set to
3752 * This functions sets a given property on a given object. This function only
3753 * changes the software state of the property, it does not call into the
3754 * driver's ->set_property callback.
3757 * Zero on success, error code on failure.
3759 int drm_object_property_set_value(struct drm_mode_object *obj,
3760 struct drm_property *property, uint64_t val)
3764 for (i = 0; i < obj->properties->count; i++) {
3765 if (obj->properties->ids[i] == property->base.id) {
3766 obj->properties->values[i] = val;
3773 EXPORT_SYMBOL(drm_object_property_set_value);
3776 * drm_object_property_get_value - retrieve the value of a property
3777 * @obj: drm mode object to get property value from
3778 * @property: property to retrieve
3779 * @val: storage for the property value
3781 * This function retrieves the softare state of the given property for the given
3782 * property. Since there is no driver callback to retrieve the current property
3783 * value this might be out of sync with the hardware, depending upon the driver
3787 * Zero on success, error code on failure.
3789 int drm_object_property_get_value(struct drm_mode_object *obj,
3790 struct drm_property *property, uint64_t *val)
3794 for (i = 0; i < obj->properties->count; i++) {
3795 if (obj->properties->ids[i] == property->base.id) {
3796 *val = obj->properties->values[i];
3803 EXPORT_SYMBOL(drm_object_property_get_value);
3806 * drm_mode_getproperty_ioctl - get the current value of a connector's property
3809 * @file_priv: DRM file info
3811 * This function retrieves the current value for an connectors's property.
3813 * Called by the user via ioctl.
3816 * Zero on success, errno on failure.
3818 int drm_mode_getproperty_ioctl(struct drm_device *dev,
3819 void *data, struct drm_file *file_priv)
3821 struct drm_mode_get_property *out_resp = data;
3822 struct drm_property *property;
3825 int value_count = 0;
3828 struct drm_property_enum *prop_enum;
3829 struct drm_mode_property_enum __user *enum_ptr;
3830 struct drm_property_blob *prop_blob;
3831 uint32_t __user *blob_id_ptr;
3832 uint64_t __user *values_ptr;
3833 uint32_t __user *blob_length_ptr;
3835 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3838 drm_modeset_lock_all(dev);
3839 property = drm_property_find(dev, out_resp->prop_id);
3845 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3846 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3847 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
3849 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
3850 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
3854 value_count = property->num_values;
3856 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
3857 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
3858 out_resp->flags = property->flags;
3860 if ((out_resp->count_values >= value_count) && value_count) {
3861 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
3862 for (i = 0; i < value_count; i++) {
3863 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
3869 out_resp->count_values = value_count;
3871 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3872 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3873 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
3875 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3876 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3878 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
3883 if (copy_to_user(&enum_ptr[copied].name,
3884 &prop_enum->name, DRM_PROP_NAME_LEN)) {
3891 out_resp->count_enum_blobs = enum_count;
3894 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
3895 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
3897 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr;
3898 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr;
3900 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
3901 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
3906 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
3914 out_resp->count_enum_blobs = blob_count;
3917 drm_modeset_unlock_all(dev);
3921 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
3924 struct drm_property_blob *blob;
3927 if (!length || !data)
3930 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
3934 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
3940 blob->length = length;
3942 memcpy(blob->data, data, length);
3944 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
3948 static void drm_property_destroy_blob(struct drm_device *dev,
3949 struct drm_property_blob *blob)
3951 drm_mode_object_put(dev, &blob->base);
3952 list_del(&blob->head);
3957 * drm_mode_getblob_ioctl - get the contents of a blob property value
3960 * @file_priv: DRM file info
3962 * This function retrieves the contents of a blob property. The value stored in
3963 * an object's blob property is just a normal modeset object id.
3965 * Called by the user via ioctl.
3968 * Zero on success, errno on failure.
3970 int drm_mode_getblob_ioctl(struct drm_device *dev,
3971 void *data, struct drm_file *file_priv)
3973 struct drm_mode_get_blob *out_resp = data;
3974 struct drm_property_blob *blob;
3976 void __user *blob_ptr;
3978 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3981 drm_modeset_lock_all(dev);
3982 blob = drm_property_blob_find(dev, out_resp->blob_id);
3988 if (out_resp->length == blob->length) {
3989 blob_ptr = (void __user *)(unsigned long)out_resp->data;
3990 if (copy_to_user(blob_ptr, blob->data, blob->length)){
3995 out_resp->length = blob->length;
3998 drm_modeset_unlock_all(dev);
4002 int drm_mode_connector_set_path_property(struct drm_connector *connector,
4005 struct drm_device *dev = connector->dev;
4007 size = strlen(path) + 1;
4009 connector->path_blob_ptr = drm_property_create_blob(connector->dev,
4011 if (!connector->path_blob_ptr)
4014 ret = drm_object_property_set_value(&connector->base,
4015 dev->mode_config.path_property,
4016 connector->path_blob_ptr->base.id);
4019 EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4022 * drm_mode_connector_update_edid_property - update the edid property of a connector
4023 * @connector: drm connector
4024 * @edid: new value of the edid property
4026 * This function creates a new blob modeset object and assigns its id to the
4027 * connector's edid property.
4030 * Zero on success, errno on failure.
4032 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4035 struct drm_device *dev = connector->dev;
4038 /* ignore requests to set edid when overridden */
4039 if (connector->override_edid)
4042 if (connector->edid_blob_ptr)
4043 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
4045 /* Delete edid, when there is none. */
4047 connector->edid_blob_ptr = NULL;
4048 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
4052 size = EDID_LENGTH * (1 + edid->extensions);
4053 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
4055 if (!connector->edid_blob_ptr)
4058 ret = drm_object_property_set_value(&connector->base,
4059 dev->mode_config.edid_property,
4060 connector->edid_blob_ptr->base.id);
4064 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4066 static bool drm_property_change_is_valid(struct drm_property *property,
4069 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4072 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
4073 if (value < property->values[0] || value > property->values[1])
4076 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4077 int64_t svalue = U642I64(value);
4078 if (svalue < U642I64(property->values[0]) ||
4079 svalue > U642I64(property->values[1]))
4082 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4084 uint64_t valid_mask = 0;
4085 for (i = 0; i < property->num_values; i++)
4086 valid_mask |= (1ULL << property->values[i]);
4087 return !(value & ~valid_mask);
4088 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
4089 /* Only the driver knows */
4091 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4092 struct drm_mode_object *obj;
4093 /* a zero value for an object property translates to null: */
4097 * NOTE: use _object_find() directly to bypass restriction on
4098 * looking up refcnt'd objects (ie. fb's). For a refcnt'd
4099 * object this could race against object finalization, so it
4100 * simply tells us that the object *was* valid. Which is good
4103 obj = _object_find(property->dev, value, property->values[0]);
4107 for (i = 0; i < property->num_values; i++)
4108 if (property->values[i] == value)
4115 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4118 * @file_priv: DRM file info
4120 * This function sets the current value for a connectors's property. It also
4121 * calls into a driver's ->set_property callback to update the hardware state
4123 * Called by the user via ioctl.
4126 * Zero on success, errno on failure.
4128 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4129 void *data, struct drm_file *file_priv)
4131 struct drm_mode_connector_set_property *conn_set_prop = data;
4132 struct drm_mode_obj_set_property obj_set_prop = {
4133 .value = conn_set_prop->value,
4134 .prop_id = conn_set_prop->prop_id,
4135 .obj_id = conn_set_prop->connector_id,
4136 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4139 /* It does all the locking and checking we need */
4140 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
4143 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4144 struct drm_property *property,
4148 struct drm_connector *connector = obj_to_connector(obj);
4150 /* Do DPMS ourselves */
4151 if (property == connector->dev->mode_config.dpms_property) {
4152 if (connector->funcs->dpms)
4153 (*connector->funcs->dpms)(connector, (int)value);
4155 } else if (connector->funcs->set_property)
4156 ret = connector->funcs->set_property(connector, property, value);
4158 /* store the property value if successful */
4160 drm_object_property_set_value(&connector->base, property, value);
4164 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4165 struct drm_property *property,
4169 struct drm_crtc *crtc = obj_to_crtc(obj);
4171 if (crtc->funcs->set_property)
4172 ret = crtc->funcs->set_property(crtc, property, value);
4174 drm_object_property_set_value(obj, property, value);
4180 * drm_mode_plane_set_obj_prop - set the value of a property
4181 * @plane: drm plane object to set property value for
4182 * @property: property to set
4183 * @value: value the property should be set to
4185 * This functions sets a given property on a given plane object. This function
4186 * calls the driver's ->set_property callback and changes the software state of
4187 * the property if the callback succeeds.
4190 * Zero on success, error code on failure.
4192 int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4193 struct drm_property *property,
4197 struct drm_mode_object *obj = &plane->base;
4199 if (plane->funcs->set_property)
4200 ret = plane->funcs->set_property(plane, property, value);
4202 drm_object_property_set_value(obj, property, value);
4206 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4209 * drm_mode_getproperty_ioctl - get the current value of a object's property
4212 * @file_priv: DRM file info
4214 * This function retrieves the current value for an object's property. Compared
4215 * to the connector specific ioctl this one is extended to also work on crtc and
4218 * Called by the user via ioctl.
4221 * Zero on success, errno on failure.
4223 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4224 struct drm_file *file_priv)
4226 struct drm_mode_obj_get_properties *arg = data;
4227 struct drm_mode_object *obj;
4231 int props_count = 0;
4232 uint32_t __user *props_ptr;
4233 uint64_t __user *prop_values_ptr;
4235 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4238 drm_modeset_lock_all(dev);
4240 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4245 if (!obj->properties) {
4250 props_count = obj->properties->count;
4252 /* This ioctl is called twice, once to determine how much space is
4253 * needed, and the 2nd time to fill it. */
4254 if ((arg->count_props >= props_count) && props_count) {
4256 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
4257 prop_values_ptr = (uint64_t __user *)(unsigned long)
4258 (arg->prop_values_ptr);
4259 for (i = 0; i < props_count; i++) {
4260 if (put_user(obj->properties->ids[i],
4261 props_ptr + copied)) {
4265 if (put_user(obj->properties->values[i],
4266 prop_values_ptr + copied)) {
4273 arg->count_props = props_count;
4275 drm_modeset_unlock_all(dev);
4280 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4283 * @file_priv: DRM file info
4285 * This function sets the current value for an object's property. It also calls
4286 * into a driver's ->set_property callback to update the hardware state.
4287 * Compared to the connector specific ioctl this one is extended to also work on
4288 * crtc and plane objects.
4290 * Called by the user via ioctl.
4293 * Zero on success, errno on failure.
4295 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4296 struct drm_file *file_priv)
4298 struct drm_mode_obj_set_property *arg = data;
4299 struct drm_mode_object *arg_obj;
4300 struct drm_mode_object *prop_obj;
4301 struct drm_property *property;
4305 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4308 drm_modeset_lock_all(dev);
4310 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4315 if (!arg_obj->properties)
4318 for (i = 0; i < arg_obj->properties->count; i++)
4319 if (arg_obj->properties->ids[i] == arg->prop_id)
4322 if (i == arg_obj->properties->count)
4325 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4326 DRM_MODE_OBJECT_PROPERTY);
4331 property = obj_to_property(prop_obj);
4333 if (!drm_property_change_is_valid(property, arg->value))
4336 switch (arg_obj->type) {
4337 case DRM_MODE_OBJECT_CONNECTOR:
4338 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4341 case DRM_MODE_OBJECT_CRTC:
4342 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4344 case DRM_MODE_OBJECT_PLANE:
4345 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
4346 property, arg->value);
4351 drm_modeset_unlock_all(dev);
4356 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4357 * @connector: connector to attach
4358 * @encoder: encoder to attach @connector to
4360 * This function links up a connector to an encoder. Note that the routing
4361 * restrictions between encoders and crtcs are exposed to userspace through the
4362 * possible_clones and possible_crtcs bitmasks.
4365 * Zero on success, errno on failure.
4367 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4368 struct drm_encoder *encoder)
4372 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4373 if (connector->encoder_ids[i] == 0) {
4374 connector->encoder_ids[i] = encoder->base.id;
4380 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4383 * drm_mode_crtc_set_gamma_size - set the gamma table size
4384 * @crtc: CRTC to set the gamma table size for
4385 * @gamma_size: size of the gamma table
4387 * Drivers which support gamma tables should set this to the supported gamma
4388 * table size when initializing the CRTC. Currently the drm core only supports a
4389 * fixed gamma table size.
4392 * Zero on success, errno on failure.
4394 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
4397 crtc->gamma_size = gamma_size;
4399 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
4400 if (!crtc->gamma_store) {
4401 crtc->gamma_size = 0;
4407 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
4410 * drm_mode_gamma_set_ioctl - set the gamma table
4413 * @file_priv: DRM file info
4415 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4416 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4418 * Called by the user via ioctl.
4421 * Zero on success, errno on failure.
4423 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
4424 void *data, struct drm_file *file_priv)
4426 struct drm_mode_crtc_lut *crtc_lut = data;
4427 struct drm_crtc *crtc;
4428 void *r_base, *g_base, *b_base;
4432 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4435 drm_modeset_lock_all(dev);
4436 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4442 if (crtc->funcs->gamma_set == NULL) {
4447 /* memcpy into gamma store */
4448 if (crtc_lut->gamma_size != crtc->gamma_size) {
4453 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4454 r_base = crtc->gamma_store;
4455 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4460 g_base = r_base + size;
4461 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4466 b_base = g_base + size;
4467 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4472 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
4475 drm_modeset_unlock_all(dev);
4481 * drm_mode_gamma_get_ioctl - get the gamma table
4484 * @file_priv: DRM file info
4486 * Copy the current gamma table into the storage provided. This also provides
4487 * the gamma table size the driver expects, which can be used to size the
4488 * allocated storage.
4490 * Called by the user via ioctl.
4493 * Zero on success, errno on failure.
4495 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4496 void *data, struct drm_file *file_priv)
4498 struct drm_mode_crtc_lut *crtc_lut = data;
4499 struct drm_crtc *crtc;
4500 void *r_base, *g_base, *b_base;
4504 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4507 drm_modeset_lock_all(dev);
4508 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4514 /* memcpy into gamma store */
4515 if (crtc_lut->gamma_size != crtc->gamma_size) {
4520 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4521 r_base = crtc->gamma_store;
4522 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4527 g_base = r_base + size;
4528 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4533 b_base = g_base + size;
4534 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4539 drm_modeset_unlock_all(dev);
4544 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4547 * @file_priv: DRM file info
4549 * This schedules an asynchronous update on a given CRTC, called page flip.
4550 * Optionally a drm event is generated to signal the completion of the event.
4551 * Generic drivers cannot assume that a pageflip with changed framebuffer
4552 * properties (including driver specific metadata like tiling layout) will work,
4553 * but some drivers support e.g. pixel format changes through the pageflip
4556 * Called by the user via ioctl.
4559 * Zero on success, errno on failure.
4561 int drm_mode_page_flip_ioctl(struct drm_device *dev,
4562 void *data, struct drm_file *file_priv)
4564 struct drm_mode_crtc_page_flip *page_flip = data;
4565 struct drm_crtc *crtc;
4566 struct drm_framebuffer *fb = NULL;
4567 struct drm_pending_vblank_event *e = NULL;
4568 unsigned long flags;
4571 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4572 page_flip->reserved != 0)
4575 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4578 crtc = drm_crtc_find(dev, page_flip->crtc_id);
4582 drm_modeset_lock_crtc(crtc);
4583 if (crtc->primary->fb == NULL) {
4584 /* The framebuffer is currently unbound, presumably
4585 * due to a hotplug event, that userspace has not
4592 if (crtc->funcs->page_flip == NULL)
4595 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
4601 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4605 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
4606 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4611 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4613 spin_lock_irqsave(&dev->event_lock, flags);
4614 if (file_priv->event_space < sizeof e->event) {
4615 spin_unlock_irqrestore(&dev->event_lock, flags);
4618 file_priv->event_space -= sizeof e->event;
4619 spin_unlock_irqrestore(&dev->event_lock, flags);
4621 e = kzalloc(sizeof *e, GFP_KERNEL);
4623 spin_lock_irqsave(&dev->event_lock, flags);
4624 file_priv->event_space += sizeof e->event;
4625 spin_unlock_irqrestore(&dev->event_lock, flags);
4629 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
4630 e->event.base.length = sizeof e->event;
4631 e->event.user_data = page_flip->user_data;
4632 e->base.event = &e->event.base;
4633 e->base.file_priv = file_priv;
4635 (void (*) (struct drm_pending_event *)) kfree;
4638 crtc->primary->old_fb = crtc->primary->fb;
4639 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
4641 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4642 spin_lock_irqsave(&dev->event_lock, flags);
4643 file_priv->event_space += sizeof e->event;
4644 spin_unlock_irqrestore(&dev->event_lock, flags);
4647 /* Keep the old fb, don't unref it. */
4648 crtc->primary->old_fb = NULL;
4651 * Warn if the driver hasn't properly updated the crtc->fb
4652 * field to reflect that the new framebuffer is now used.
4653 * Failing to do so will screw with the reference counting
4656 WARN_ON(crtc->primary->fb != fb);
4657 /* Unref only the old framebuffer. */
4663 drm_framebuffer_unreference(fb);
4664 if (crtc->primary->old_fb)
4665 drm_framebuffer_unreference(crtc->primary->old_fb);
4666 crtc->primary->old_fb = NULL;
4667 drm_modeset_unlock_crtc(crtc);
4673 * drm_mode_config_reset - call ->reset callbacks
4676 * This functions calls all the crtc's, encoder's and connector's ->reset
4677 * callback. Drivers can use this in e.g. their driver load or resume code to
4678 * reset hardware and software state.
4680 void drm_mode_config_reset(struct drm_device *dev)
4682 struct drm_crtc *crtc;
4683 struct drm_plane *plane;
4684 struct drm_encoder *encoder;
4685 struct drm_connector *connector;
4687 list_for_each_entry(plane, &dev->mode_config.plane_list, head)
4688 if (plane->funcs->reset)
4689 plane->funcs->reset(plane);
4691 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4692 if (crtc->funcs->reset)
4693 crtc->funcs->reset(crtc);
4695 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4696 if (encoder->funcs->reset)
4697 encoder->funcs->reset(encoder);
4699 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4700 connector->status = connector_status_unknown;
4702 if (connector->funcs->reset)
4703 connector->funcs->reset(connector);
4706 EXPORT_SYMBOL(drm_mode_config_reset);
4709 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4712 * @file_priv: DRM file info
4714 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4715 * TTM or something else entirely) and returns the resulting buffer handle. This
4716 * handle can then be wrapped up into a framebuffer modeset object.
4718 * Note that userspace is not allowed to use such objects for render
4719 * acceleration - drivers must create their own private ioctls for such a use
4722 * Called by the user via ioctl.
4725 * Zero on success, errno on failure.
4727 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
4728 void *data, struct drm_file *file_priv)
4730 struct drm_mode_create_dumb *args = data;
4731 u32 cpp, stride, size;
4733 if (!dev->driver->dumb_create)
4735 if (!args->width || !args->height || !args->bpp)
4738 /* overflow checks for 32bit size calculations */
4739 cpp = DIV_ROUND_UP(args->bpp, 8);
4740 if (cpp > 0xffffffffU / args->width)
4742 stride = cpp * args->width;
4743 if (args->height > 0xffffffffU / stride)
4746 /* test for wrap-around */
4747 size = args->height * stride;
4748 if (PAGE_ALIGN(size) == 0)
4751 return dev->driver->dumb_create(file_priv, dev, args);
4755 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4758 * @file_priv: DRM file info
4760 * Allocate an offset in the drm device node's address space to be able to
4761 * memory map a dumb buffer.
4763 * Called by the user via ioctl.
4766 * Zero on success, errno on failure.
4768 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
4769 void *data, struct drm_file *file_priv)
4771 struct drm_mode_map_dumb *args = data;
4773 /* call driver ioctl to get mmap offset */
4774 if (!dev->driver->dumb_map_offset)
4777 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
4781 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4784 * @file_priv: DRM file info
4786 * This destroys the userspace handle for the given dumb backing storage buffer.
4787 * Since buffer objects must be reference counted in the kernel a buffer object
4788 * won't be immediately freed if a framebuffer modeset object still uses it.
4790 * Called by the user via ioctl.
4793 * Zero on success, errno on failure.
4795 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
4796 void *data, struct drm_file *file_priv)
4798 struct drm_mode_destroy_dumb *args = data;
4800 if (!dev->driver->dumb_destroy)
4803 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
4807 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4808 * @format: pixel format (DRM_FORMAT_*)
4809 * @depth: storage for the depth value
4810 * @bpp: storage for the bpp value
4812 * This only supports RGB formats here for compat with code that doesn't use
4813 * pixel formats directly yet.
4815 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
4820 case DRM_FORMAT_RGB332:
4821 case DRM_FORMAT_BGR233:
4825 case DRM_FORMAT_XRGB1555:
4826 case DRM_FORMAT_XBGR1555:
4827 case DRM_FORMAT_RGBX5551:
4828 case DRM_FORMAT_BGRX5551:
4829 case DRM_FORMAT_ARGB1555:
4830 case DRM_FORMAT_ABGR1555:
4831 case DRM_FORMAT_RGBA5551:
4832 case DRM_FORMAT_BGRA5551:
4836 case DRM_FORMAT_RGB565:
4837 case DRM_FORMAT_BGR565:
4841 case DRM_FORMAT_RGB888:
4842 case DRM_FORMAT_BGR888:
4846 case DRM_FORMAT_XRGB8888:
4847 case DRM_FORMAT_XBGR8888:
4848 case DRM_FORMAT_RGBX8888:
4849 case DRM_FORMAT_BGRX8888:
4853 case DRM_FORMAT_XRGB2101010:
4854 case DRM_FORMAT_XBGR2101010:
4855 case DRM_FORMAT_RGBX1010102:
4856 case DRM_FORMAT_BGRX1010102:
4857 case DRM_FORMAT_ARGB2101010:
4858 case DRM_FORMAT_ABGR2101010:
4859 case DRM_FORMAT_RGBA1010102:
4860 case DRM_FORMAT_BGRA1010102:
4864 case DRM_FORMAT_ARGB8888:
4865 case DRM_FORMAT_ABGR8888:
4866 case DRM_FORMAT_RGBA8888:
4867 case DRM_FORMAT_BGRA8888:
4872 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4873 drm_get_format_name(format));
4879 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
4882 * drm_format_num_planes - get the number of planes for format
4883 * @format: pixel format (DRM_FORMAT_*)
4886 * The number of planes used by the specified pixel format.
4888 int drm_format_num_planes(uint32_t format)
4891 case DRM_FORMAT_YUV410:
4892 case DRM_FORMAT_YVU410:
4893 case DRM_FORMAT_YUV411:
4894 case DRM_FORMAT_YVU411:
4895 case DRM_FORMAT_YUV420:
4896 case DRM_FORMAT_YVU420:
4897 case DRM_FORMAT_YUV422:
4898 case DRM_FORMAT_YVU422:
4899 case DRM_FORMAT_YUV444:
4900 case DRM_FORMAT_YVU444:
4902 case DRM_FORMAT_NV12:
4903 case DRM_FORMAT_NV21:
4904 case DRM_FORMAT_NV16:
4905 case DRM_FORMAT_NV61:
4906 case DRM_FORMAT_NV24:
4907 case DRM_FORMAT_NV42:
4913 EXPORT_SYMBOL(drm_format_num_planes);
4916 * drm_format_plane_cpp - determine the bytes per pixel value
4917 * @format: pixel format (DRM_FORMAT_*)
4918 * @plane: plane index
4921 * The bytes per pixel value for the specified plane.
4923 int drm_format_plane_cpp(uint32_t format, int plane)
4928 if (plane >= drm_format_num_planes(format))
4932 case DRM_FORMAT_YUYV:
4933 case DRM_FORMAT_YVYU:
4934 case DRM_FORMAT_UYVY:
4935 case DRM_FORMAT_VYUY:
4937 case DRM_FORMAT_NV12:
4938 case DRM_FORMAT_NV21:
4939 case DRM_FORMAT_NV16:
4940 case DRM_FORMAT_NV61:
4941 case DRM_FORMAT_NV24:
4942 case DRM_FORMAT_NV42:
4943 return plane ? 2 : 1;
4944 case DRM_FORMAT_YUV410:
4945 case DRM_FORMAT_YVU410:
4946 case DRM_FORMAT_YUV411:
4947 case DRM_FORMAT_YVU411:
4948 case DRM_FORMAT_YUV420:
4949 case DRM_FORMAT_YVU420:
4950 case DRM_FORMAT_YUV422:
4951 case DRM_FORMAT_YVU422:
4952 case DRM_FORMAT_YUV444:
4953 case DRM_FORMAT_YVU444:
4956 drm_fb_get_bpp_depth(format, &depth, &bpp);
4960 EXPORT_SYMBOL(drm_format_plane_cpp);
4963 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
4964 * @format: pixel format (DRM_FORMAT_*)
4967 * The horizontal chroma subsampling factor for the
4968 * specified pixel format.
4970 int drm_format_horz_chroma_subsampling(uint32_t format)
4973 case DRM_FORMAT_YUV411:
4974 case DRM_FORMAT_YVU411:
4975 case DRM_FORMAT_YUV410:
4976 case DRM_FORMAT_YVU410:
4978 case DRM_FORMAT_YUYV:
4979 case DRM_FORMAT_YVYU:
4980 case DRM_FORMAT_UYVY:
4981 case DRM_FORMAT_VYUY:
4982 case DRM_FORMAT_NV12:
4983 case DRM_FORMAT_NV21:
4984 case DRM_FORMAT_NV16:
4985 case DRM_FORMAT_NV61:
4986 case DRM_FORMAT_YUV422:
4987 case DRM_FORMAT_YVU422:
4988 case DRM_FORMAT_YUV420:
4989 case DRM_FORMAT_YVU420:
4995 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
4998 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
4999 * @format: pixel format (DRM_FORMAT_*)
5002 * The vertical chroma subsampling factor for the
5003 * specified pixel format.
5005 int drm_format_vert_chroma_subsampling(uint32_t format)
5008 case DRM_FORMAT_YUV410:
5009 case DRM_FORMAT_YVU410:
5011 case DRM_FORMAT_YUV420:
5012 case DRM_FORMAT_YVU420:
5013 case DRM_FORMAT_NV12:
5014 case DRM_FORMAT_NV21:
5020 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
5023 * drm_rotation_simplify() - Try to simplify the rotation
5024 * @rotation: Rotation to be simplified
5025 * @supported_rotations: Supported rotations
5027 * Attempt to simplify the rotation to a form that is supported.
5028 * Eg. if the hardware supports everything except DRM_REFLECT_X
5029 * one could call this function like this:
5031 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5032 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5033 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5035 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5036 * transforms the hardware supports, this function may not
5037 * be able to produce a supported transform, so the caller should
5038 * check the result afterwards.
5040 unsigned int drm_rotation_simplify(unsigned int rotation,
5041 unsigned int supported_rotations)
5043 if (rotation & ~supported_rotations) {
5044 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5045 rotation = (rotation & ~0xf) | BIT((ffs(rotation & 0xf) + 1) % 4);
5050 EXPORT_SYMBOL(drm_rotation_simplify);
5053 * drm_mode_config_init - initialize DRM mode_configuration structure
5056 * Initialize @dev's mode_config structure, used for tracking the graphics
5057 * configuration of @dev.
5059 * Since this initializes the modeset locks, no locking is possible. Which is no
5060 * problem, since this should happen single threaded at init time. It is the
5061 * driver's problem to ensure this guarantee.
5064 void drm_mode_config_init(struct drm_device *dev)
5066 mutex_init(&dev->mode_config.mutex);
5067 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
5068 mutex_init(&dev->mode_config.idr_mutex);
5069 mutex_init(&dev->mode_config.fb_lock);
5070 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5071 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5072 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5073 INIT_LIST_HEAD(&dev->mode_config.bridge_list);
5074 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5075 INIT_LIST_HEAD(&dev->mode_config.property_list);
5076 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5077 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5078 idr_init(&dev->mode_config.crtc_idr);
5080 drm_modeset_lock_all(dev);
5081 drm_mode_create_standard_connector_properties(dev);
5082 drm_mode_create_standard_plane_properties(dev);
5083 drm_modeset_unlock_all(dev);
5085 /* Just to be sure */
5086 dev->mode_config.num_fb = 0;
5087 dev->mode_config.num_connector = 0;
5088 dev->mode_config.num_crtc = 0;
5089 dev->mode_config.num_encoder = 0;
5090 dev->mode_config.num_overlay_plane = 0;
5091 dev->mode_config.num_total_plane = 0;
5093 EXPORT_SYMBOL(drm_mode_config_init);
5096 * drm_mode_config_cleanup - free up DRM mode_config info
5099 * Free up all the connectors and CRTCs associated with this DRM device, then
5100 * free up the framebuffers and associated buffer objects.
5102 * Note that since this /should/ happen single-threaded at driver/device
5103 * teardown time, no locking is required. It's the driver's job to ensure that
5104 * this guarantee actually holds true.
5106 * FIXME: cleanup any dangling user buffer objects too
5108 void drm_mode_config_cleanup(struct drm_device *dev)
5110 struct drm_connector *connector, *ot;
5111 struct drm_crtc *crtc, *ct;
5112 struct drm_encoder *encoder, *enct;
5113 struct drm_bridge *bridge, *brt;
5114 struct drm_framebuffer *fb, *fbt;
5115 struct drm_property *property, *pt;
5116 struct drm_property_blob *blob, *bt;
5117 struct drm_plane *plane, *plt;
5119 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5121 encoder->funcs->destroy(encoder);
5124 list_for_each_entry_safe(bridge, brt,
5125 &dev->mode_config.bridge_list, head) {
5126 bridge->funcs->destroy(bridge);
5129 list_for_each_entry_safe(connector, ot,
5130 &dev->mode_config.connector_list, head) {
5131 connector->funcs->destroy(connector);
5134 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5136 drm_property_destroy(dev, property);
5139 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5141 drm_property_destroy_blob(dev, blob);
5145 * Single-threaded teardown context, so it's not required to grab the
5146 * fb_lock to protect against concurrent fb_list access. Contrary, it
5147 * would actually deadlock with the drm_framebuffer_cleanup function.
5149 * Also, if there are any framebuffers left, that's a driver leak now,
5150 * so politely WARN about this.
5152 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5153 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5154 drm_framebuffer_remove(fb);
5157 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5159 plane->funcs->destroy(plane);
5162 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5163 crtc->funcs->destroy(crtc);
5166 idr_destroy(&dev->mode_config.crtc_idr);
5167 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
5169 EXPORT_SYMBOL(drm_mode_config_cleanup);
5171 struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5172 unsigned int supported_rotations)
5174 static const struct drm_prop_enum_list props[] = {
5175 { DRM_ROTATE_0, "rotate-0" },
5176 { DRM_ROTATE_90, "rotate-90" },
5177 { DRM_ROTATE_180, "rotate-180" },
5178 { DRM_ROTATE_270, "rotate-270" },
5179 { DRM_REFLECT_X, "reflect-x" },
5180 { DRM_REFLECT_Y, "reflect-y" },
5183 return drm_property_create_bitmask(dev, 0, "rotation",
5184 props, ARRAY_SIZE(props),
5185 supported_rotations);
5187 EXPORT_SYMBOL(drm_mode_create_rotation_property);