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[] = {
74 { DRM_PLANE_TYPE_OVERLAY, "Overlay" },
75 { DRM_PLANE_TYPE_PRIMARY, "Primary" },
76 { DRM_PLANE_TYPE_CURSOR, "Cursor" },
82 static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] = {
83 { DRM_MODE_SCALE_NONE, "None" },
84 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
85 { DRM_MODE_SCALE_CENTER, "Center" },
86 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
89 static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = {
90 { DRM_MODE_PICTURE_ASPECT_NONE, "Automatic" },
91 { DRM_MODE_PICTURE_ASPECT_4_3, "4:3" },
92 { DRM_MODE_PICTURE_ASPECT_16_9, "16:9" },
96 * Non-global properties, but "required" for certain connectors.
98 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = {
99 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
100 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
101 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
104 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
106 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = {
107 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
108 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
109 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
112 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
113 drm_dvi_i_subconnector_enum_list)
115 static const struct drm_prop_enum_list drm_tv_select_enum_list[] = {
116 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
117 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
118 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
119 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
120 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
123 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
125 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = {
126 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
127 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
128 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
129 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
130 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
133 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
134 drm_tv_subconnector_enum_list)
136 static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
137 { DRM_MODE_DIRTY_OFF, "Off" },
138 { DRM_MODE_DIRTY_ON, "On" },
139 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
142 struct drm_conn_prop_enum_list {
149 * Connector and encoder types.
151 static struct drm_conn_prop_enum_list drm_connector_enum_list[] = {
152 { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
153 { DRM_MODE_CONNECTOR_VGA, "VGA" },
154 { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
155 { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
156 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
157 { DRM_MODE_CONNECTOR_Composite, "Composite" },
158 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
159 { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
160 { DRM_MODE_CONNECTOR_Component, "Component" },
161 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
162 { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
163 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
164 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
165 { DRM_MODE_CONNECTOR_TV, "TV" },
166 { DRM_MODE_CONNECTOR_eDP, "eDP" },
167 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
168 { DRM_MODE_CONNECTOR_DSI, "DSI" },
171 static const struct drm_prop_enum_list drm_encoder_enum_list[] = {
172 { DRM_MODE_ENCODER_NONE, "None" },
173 { DRM_MODE_ENCODER_DAC, "DAC" },
174 { DRM_MODE_ENCODER_TMDS, "TMDS" },
175 { DRM_MODE_ENCODER_LVDS, "LVDS" },
176 { DRM_MODE_ENCODER_TVDAC, "TV" },
177 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
178 { DRM_MODE_ENCODER_DSI, "DSI" },
179 { DRM_MODE_ENCODER_DPMST, "DP MST" },
182 static const struct drm_prop_enum_list drm_subpixel_enum_list[] = {
183 { SubPixelUnknown, "Unknown" },
184 { SubPixelHorizontalRGB, "Horizontal RGB" },
185 { SubPixelHorizontalBGR, "Horizontal BGR" },
186 { SubPixelVerticalRGB, "Vertical RGB" },
187 { SubPixelVerticalBGR, "Vertical BGR" },
188 { SubPixelNone, "None" },
191 void drm_connector_ida_init(void)
195 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
196 ida_init(&drm_connector_enum_list[i].ida);
199 void drm_connector_ida_destroy(void)
203 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
204 ida_destroy(&drm_connector_enum_list[i].ida);
208 * drm_get_connector_status_name - return a string for connector status
209 * @status: connector status to compute name of
211 * In contrast to the other drm_get_*_name functions this one here returns a
212 * const pointer and hence is threadsafe.
214 const char *drm_get_connector_status_name(enum drm_connector_status status)
216 if (status == connector_status_connected)
218 else if (status == connector_status_disconnected)
219 return "disconnected";
223 EXPORT_SYMBOL(drm_get_connector_status_name);
226 * drm_get_subpixel_order_name - return a string for a given subpixel enum
227 * @order: enum of subpixel_order
229 * Note you could abuse this and return something out of bounds, but that
230 * would be a caller error. No unscrubbed user data should make it here.
232 const char *drm_get_subpixel_order_name(enum subpixel_order order)
234 return drm_subpixel_enum_list[order].name;
236 EXPORT_SYMBOL(drm_get_subpixel_order_name);
238 static char printable_char(int c)
240 return isascii(c) && isprint(c) ? c : '?';
244 * drm_get_format_name - return a string for drm fourcc format
245 * @format: format to compute name of
247 * Note that the buffer used by this function is globally shared and owned by
248 * the function itself.
250 * FIXME: This isn't really multithreading safe.
252 const char *drm_get_format_name(uint32_t format)
256 snprintf(buf, sizeof(buf),
257 "%c%c%c%c %s-endian (0x%08x)",
258 printable_char(format & 0xff),
259 printable_char((format >> 8) & 0xff),
260 printable_char((format >> 16) & 0xff),
261 printable_char((format >> 24) & 0x7f),
262 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
267 EXPORT_SYMBOL(drm_get_format_name);
270 * Internal function to assign a slot in the object idr and optionally
271 * register the object into the idr.
273 static int drm_mode_object_get_reg(struct drm_device *dev,
274 struct drm_mode_object *obj,
280 mutex_lock(&dev->mode_config.idr_mutex);
281 ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
284 * Set up the object linking under the protection of the idr
285 * lock so that other users can't see inconsistent state.
288 obj->type = obj_type;
290 mutex_unlock(&dev->mode_config.idr_mutex);
292 return ret < 0 ? ret : 0;
296 * drm_mode_object_get - allocate a new modeset identifier
298 * @obj: object pointer, used to generate unique ID
299 * @obj_type: object type
301 * Create a unique identifier based on @ptr in @dev's identifier space. Used
302 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
303 * modeset identifiers are _not_ reference counted. Hence don't use this for
304 * reference counted modeset objects like framebuffers.
307 * New unique (relative to other objects in @dev) integer identifier for the
310 int drm_mode_object_get(struct drm_device *dev,
311 struct drm_mode_object *obj, uint32_t obj_type)
313 return drm_mode_object_get_reg(dev, obj, obj_type, true);
316 static void drm_mode_object_register(struct drm_device *dev,
317 struct drm_mode_object *obj)
319 mutex_lock(&dev->mode_config.idr_mutex);
320 idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
321 mutex_unlock(&dev->mode_config.idr_mutex);
325 * drm_mode_object_put - free a modeset identifer
327 * @object: object to free
329 * Free @id from @dev's unique identifier pool. Note that despite the _get
330 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
331 * for reference counted modeset objects like framebuffers.
333 void drm_mode_object_put(struct drm_device *dev,
334 struct drm_mode_object *object)
336 mutex_lock(&dev->mode_config.idr_mutex);
337 idr_remove(&dev->mode_config.crtc_idr, object->id);
338 mutex_unlock(&dev->mode_config.idr_mutex);
341 static struct drm_mode_object *_object_find(struct drm_device *dev,
342 uint32_t id, uint32_t type)
344 struct drm_mode_object *obj = NULL;
346 mutex_lock(&dev->mode_config.idr_mutex);
347 obj = idr_find(&dev->mode_config.crtc_idr, id);
348 if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
350 if (obj && obj->id != id)
352 /* don't leak out unref'd fb's */
353 if (obj && (obj->type == DRM_MODE_OBJECT_FB))
355 mutex_unlock(&dev->mode_config.idr_mutex);
361 * drm_mode_object_find - look up a drm object with static lifetime
363 * @id: id of the mode object
364 * @type: type of the mode object
366 * Note that framebuffers cannot be looked up with this functions - since those
367 * are reference counted, they need special treatment. Even with
368 * DRM_MODE_OBJECT_ANY (although that will simply return NULL
369 * rather than WARN_ON()).
371 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
372 uint32_t id, uint32_t type)
374 struct drm_mode_object *obj = NULL;
376 /* Framebuffers are reference counted and need their own lookup
378 WARN_ON(type == DRM_MODE_OBJECT_FB);
379 obj = _object_find(dev, id, type);
382 EXPORT_SYMBOL(drm_mode_object_find);
385 * drm_framebuffer_init - initialize a framebuffer
387 * @fb: framebuffer to be initialized
388 * @funcs: ... with these functions
390 * Allocates an ID for the framebuffer's parent mode object, sets its mode
391 * functions & device file and adds it to the master fd list.
394 * This functions publishes the fb and makes it available for concurrent access
395 * by other users. Which means by this point the fb _must_ be fully set up -
396 * since all the fb attributes are invariant over its lifetime, no further
397 * locking but only correct reference counting is required.
400 * Zero on success, error code on failure.
402 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
403 const struct drm_framebuffer_funcs *funcs)
407 mutex_lock(&dev->mode_config.fb_lock);
408 kref_init(&fb->refcount);
409 INIT_LIST_HEAD(&fb->filp_head);
413 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
417 dev->mode_config.num_fb++;
418 list_add(&fb->head, &dev->mode_config.fb_list);
420 mutex_unlock(&dev->mode_config.fb_lock);
424 EXPORT_SYMBOL(drm_framebuffer_init);
426 /* dev->mode_config.fb_lock must be held! */
427 static void __drm_framebuffer_unregister(struct drm_device *dev,
428 struct drm_framebuffer *fb)
430 mutex_lock(&dev->mode_config.idr_mutex);
431 idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
432 mutex_unlock(&dev->mode_config.idr_mutex);
437 static void drm_framebuffer_free(struct kref *kref)
439 struct drm_framebuffer *fb =
440 container_of(kref, struct drm_framebuffer, refcount);
441 struct drm_device *dev = fb->dev;
444 * The lookup idr holds a weak reference, which has not necessarily been
445 * removed at this point. Check for that.
447 mutex_lock(&dev->mode_config.fb_lock);
449 /* Mark fb as reaped and drop idr ref. */
450 __drm_framebuffer_unregister(dev, fb);
452 mutex_unlock(&dev->mode_config.fb_lock);
454 fb->funcs->destroy(fb);
457 static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
460 struct drm_mode_object *obj = NULL;
461 struct drm_framebuffer *fb;
463 mutex_lock(&dev->mode_config.idr_mutex);
464 obj = idr_find(&dev->mode_config.crtc_idr, id);
465 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
469 mutex_unlock(&dev->mode_config.idr_mutex);
475 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
477 * @id: id of the fb object
479 * If successful, this grabs an additional reference to the framebuffer -
480 * callers need to make sure to eventually unreference the returned framebuffer
481 * again, using @drm_framebuffer_unreference.
483 struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
486 struct drm_framebuffer *fb;
488 mutex_lock(&dev->mode_config.fb_lock);
489 fb = __drm_framebuffer_lookup(dev, id);
491 if (!kref_get_unless_zero(&fb->refcount))
494 mutex_unlock(&dev->mode_config.fb_lock);
498 EXPORT_SYMBOL(drm_framebuffer_lookup);
501 * drm_framebuffer_unreference - unref a framebuffer
502 * @fb: framebuffer to unref
504 * This functions decrements the fb's refcount and frees it if it drops to zero.
506 void drm_framebuffer_unreference(struct drm_framebuffer *fb)
508 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
509 kref_put(&fb->refcount, drm_framebuffer_free);
511 EXPORT_SYMBOL(drm_framebuffer_unreference);
514 * drm_framebuffer_reference - incr the fb refcnt
517 * This functions increments the fb's refcount.
519 void drm_framebuffer_reference(struct drm_framebuffer *fb)
521 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
522 kref_get(&fb->refcount);
524 EXPORT_SYMBOL(drm_framebuffer_reference);
526 static void drm_framebuffer_free_bug(struct kref *kref)
531 static void __drm_framebuffer_unreference(struct drm_framebuffer *fb)
533 DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
534 kref_put(&fb->refcount, drm_framebuffer_free_bug);
538 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
539 * @fb: fb to unregister
541 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
542 * those used for fbdev. Note that the caller must hold a reference of it's own,
543 * i.e. the object may not be destroyed through this call (since it'll lead to a
544 * locking inversion).
546 void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
548 struct drm_device *dev = fb->dev;
550 mutex_lock(&dev->mode_config.fb_lock);
551 /* Mark fb as reaped and drop idr ref. */
552 __drm_framebuffer_unregister(dev, fb);
553 mutex_unlock(&dev->mode_config.fb_lock);
555 EXPORT_SYMBOL(drm_framebuffer_unregister_private);
558 * drm_framebuffer_cleanup - remove a framebuffer object
559 * @fb: framebuffer to remove
561 * Cleanup framebuffer. This function is intended to be used from the drivers
562 * ->destroy callback. It can also be used to clean up driver private
563 * framebuffers embedded into a larger structure.
565 * Note that this function does not remove the fb from active usuage - if it is
566 * still used anywhere, hilarity can ensue since userspace could call getfb on
567 * the id and get back -EINVAL. Obviously no concern at driver unload time.
569 * Also, the framebuffer will not be removed from the lookup idr - for
570 * user-created framebuffers this will happen in in the rmfb ioctl. For
571 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
572 * drm_framebuffer_unregister_private.
574 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
576 struct drm_device *dev = fb->dev;
578 mutex_lock(&dev->mode_config.fb_lock);
580 dev->mode_config.num_fb--;
581 mutex_unlock(&dev->mode_config.fb_lock);
583 EXPORT_SYMBOL(drm_framebuffer_cleanup);
586 * drm_framebuffer_remove - remove and unreference a framebuffer object
587 * @fb: framebuffer to remove
589 * Scans all the CRTCs and planes in @dev's mode_config. If they're
590 * using @fb, removes it, setting it to NULL. Then drops the reference to the
591 * passed-in framebuffer. Might take the modeset locks.
593 * Note that this function optimizes the cleanup away if the caller holds the
594 * last reference to the framebuffer. It is also guaranteed to not take the
595 * modeset locks in this case.
597 void drm_framebuffer_remove(struct drm_framebuffer *fb)
599 struct drm_device *dev = fb->dev;
600 struct drm_crtc *crtc;
601 struct drm_plane *plane;
602 struct drm_mode_set set;
605 WARN_ON(!list_empty(&fb->filp_head));
608 * drm ABI mandates that we remove any deleted framebuffers from active
609 * useage. But since most sane clients only remove framebuffers they no
610 * longer need, try to optimize this away.
612 * Since we're holding a reference ourselves, observing a refcount of 1
613 * means that we're the last holder and can skip it. Also, the refcount
614 * can never increase from 1 again, so we don't need any barriers or
617 * Note that userspace could try to race with use and instate a new
618 * usage _after_ we've cleared all current ones. End result will be an
619 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
622 if (atomic_read(&fb->refcount.refcount) > 1) {
623 drm_modeset_lock_all(dev);
624 /* remove from any CRTC */
625 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
626 if (crtc->primary->fb == fb) {
627 /* should turn off the crtc */
628 memset(&set, 0, sizeof(struct drm_mode_set));
631 ret = drm_mode_set_config_internal(&set);
633 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
637 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
639 drm_plane_force_disable(plane);
641 drm_modeset_unlock_all(dev);
644 drm_framebuffer_unreference(fb);
646 EXPORT_SYMBOL(drm_framebuffer_remove);
648 DEFINE_WW_CLASS(crtc_ww_class);
651 * drm_crtc_init_with_planes - Initialise a new CRTC object with
652 * specified primary and cursor planes.
654 * @crtc: CRTC object to init
655 * @primary: Primary plane for CRTC
656 * @cursor: Cursor plane for CRTC
657 * @funcs: callbacks for the new CRTC
659 * Inits a new object created as base part of a driver crtc object.
662 * Zero on success, error code on failure.
664 int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
665 struct drm_plane *primary,
666 struct drm_plane *cursor,
667 const struct drm_crtc_funcs *funcs)
669 struct drm_mode_config *config = &dev->mode_config;
674 crtc->invert_dimensions = false;
676 drm_modeset_lock_init(&crtc->mutex);
677 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
681 crtc->base.properties = &crtc->properties;
683 list_add_tail(&crtc->head, &config->crtc_list);
686 crtc->primary = primary;
687 crtc->cursor = cursor;
689 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
691 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
695 EXPORT_SYMBOL(drm_crtc_init_with_planes);
698 * drm_crtc_cleanup - Clean up the core crtc usage
699 * @crtc: CRTC to cleanup
701 * This function cleans up @crtc and removes it from the DRM mode setting
702 * core. Note that the function does *not* free the crtc structure itself,
703 * this is the responsibility of the caller.
705 void drm_crtc_cleanup(struct drm_crtc *crtc)
707 struct drm_device *dev = crtc->dev;
709 kfree(crtc->gamma_store);
710 crtc->gamma_store = NULL;
712 drm_modeset_lock_fini(&crtc->mutex);
714 drm_mode_object_put(dev, &crtc->base);
715 list_del(&crtc->head);
716 dev->mode_config.num_crtc--;
718 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
719 if (crtc->state && crtc->funcs->atomic_destroy_state)
720 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
722 memset(crtc, 0, sizeof(*crtc));
724 EXPORT_SYMBOL(drm_crtc_cleanup);
727 * drm_crtc_index - find the index of a registered CRTC
728 * @crtc: CRTC to find index for
730 * Given a registered CRTC, return the index of that CRTC within a DRM
731 * device's list of CRTCs.
733 unsigned int drm_crtc_index(struct drm_crtc *crtc)
735 unsigned int index = 0;
736 struct drm_crtc *tmp;
738 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
747 EXPORT_SYMBOL(drm_crtc_index);
750 * drm_mode_remove - remove and free a mode
751 * @connector: connector list to modify
752 * @mode: mode to remove
754 * Remove @mode from @connector's mode list, then free it.
756 static void drm_mode_remove(struct drm_connector *connector,
757 struct drm_display_mode *mode)
759 list_del(&mode->head);
760 drm_mode_destroy(connector->dev, mode);
764 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
765 * @connector: connector to quwery
767 * The kernel supports per-connector configration of its consoles through
768 * use of the video= parameter. This function parses that option and
769 * extracts the user's specified mode (or enable/disable status) for a
770 * particular connector. This is typically only used during the early fbdev
773 static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
775 struct drm_cmdline_mode *mode = &connector->cmdline_mode;
778 if (fb_get_options(connector->name, &option))
781 if (!drm_mode_parse_command_line_for_connector(option,
789 switch (mode->force) {
793 case DRM_FORCE_ON_DIGITAL:
802 DRM_INFO("forcing %s connector %s\n", connector->name, s);
803 connector->force = mode->force;
806 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
808 mode->xres, mode->yres,
809 mode->refresh_specified ? mode->refresh : 60,
810 mode->rb ? " reduced blanking" : "",
811 mode->margins ? " with margins" : "",
812 mode->interlace ? " interlaced" : "");
816 * drm_connector_init - Init a preallocated connector
818 * @connector: the connector to init
819 * @funcs: callbacks for this connector
820 * @connector_type: user visible type of the connector
822 * Initialises a preallocated connector. Connectors should be
823 * subclassed as part of driver connector objects.
826 * Zero on success, error code on failure.
828 int drm_connector_init(struct drm_device *dev,
829 struct drm_connector *connector,
830 const struct drm_connector_funcs *funcs,
834 struct ida *connector_ida =
835 &drm_connector_enum_list[connector_type].ida;
837 drm_modeset_lock_all(dev);
839 ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false);
843 connector->base.properties = &connector->properties;
844 connector->dev = dev;
845 connector->funcs = funcs;
846 connector->connector_type = connector_type;
847 connector->connector_type_id =
848 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
849 if (connector->connector_type_id < 0) {
850 ret = connector->connector_type_id;
854 kasprintf(GFP_KERNEL, "%s-%d",
855 drm_connector_enum_list[connector_type].name,
856 connector->connector_type_id);
857 if (!connector->name) {
862 INIT_LIST_HEAD(&connector->probed_modes);
863 INIT_LIST_HEAD(&connector->modes);
864 connector->edid_blob_ptr = NULL;
865 connector->status = connector_status_unknown;
867 drm_connector_get_cmdline_mode(connector);
869 /* We should add connectors at the end to avoid upsetting the connector
871 list_add_tail(&connector->head, &dev->mode_config.connector_list);
872 dev->mode_config.num_connector++;
874 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
875 drm_object_attach_property(&connector->base,
876 dev->mode_config.edid_property,
879 drm_object_attach_property(&connector->base,
880 dev->mode_config.dpms_property, 0);
882 connector->debugfs_entry = NULL;
886 drm_mode_object_put(dev, &connector->base);
889 drm_modeset_unlock_all(dev);
893 EXPORT_SYMBOL(drm_connector_init);
896 * drm_connector_cleanup - cleans up an initialised connector
897 * @connector: connector to cleanup
899 * Cleans up the connector but doesn't free the object.
901 void drm_connector_cleanup(struct drm_connector *connector)
903 struct drm_device *dev = connector->dev;
904 struct drm_display_mode *mode, *t;
906 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
907 drm_mode_remove(connector, mode);
909 list_for_each_entry_safe(mode, t, &connector->modes, head)
910 drm_mode_remove(connector, mode);
912 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
913 connector->connector_type_id);
915 drm_mode_object_put(dev, &connector->base);
916 kfree(connector->name);
917 connector->name = NULL;
918 list_del(&connector->head);
919 dev->mode_config.num_connector--;
921 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
922 if (connector->state && connector->funcs->atomic_destroy_state)
923 connector->funcs->atomic_destroy_state(connector,
926 memset(connector, 0, sizeof(*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;
941 struct drm_mode_config *config = &connector->dev->mode_config;
943 WARN_ON(!drm_modeset_is_locked(&config->connection_mutex));
945 list_for_each_entry(tmp, &connector->dev->mode_config.connector_list, head) {
946 if (tmp == connector)
954 EXPORT_SYMBOL(drm_connector_index);
957 * drm_connector_register - register a connector
958 * @connector: the connector to register
960 * Register userspace interfaces for a connector
963 * Zero on success, error code on failure.
965 int drm_connector_register(struct drm_connector *connector)
969 drm_mode_object_register(connector->dev, &connector->base);
971 ret = drm_sysfs_connector_add(connector);
975 ret = drm_debugfs_connector_add(connector);
977 drm_sysfs_connector_remove(connector);
983 EXPORT_SYMBOL(drm_connector_register);
986 * drm_connector_unregister - unregister a connector
987 * @connector: the connector to unregister
989 * Unregister userspace interfaces for a connector
991 void drm_connector_unregister(struct drm_connector *connector)
993 drm_sysfs_connector_remove(connector);
994 drm_debugfs_connector_remove(connector);
996 EXPORT_SYMBOL(drm_connector_unregister);
1000 * drm_connector_unplug_all - unregister connector userspace interfaces
1003 * This function unregisters all connector userspace interfaces in sysfs. Should
1004 * be call when the device is disconnected, e.g. from an usb driver's
1005 * ->disconnect callback.
1007 void drm_connector_unplug_all(struct drm_device *dev)
1009 struct drm_connector *connector;
1011 /* taking the mode config mutex ends up in a clash with sysfs */
1012 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1013 drm_connector_unregister(connector);
1016 EXPORT_SYMBOL(drm_connector_unplug_all);
1019 * drm_bridge_init - initialize a drm transcoder/bridge
1021 * @bridge: transcoder/bridge to set up
1022 * @funcs: bridge function table
1024 * Initialises a preallocated bridge. Bridges should be
1025 * subclassed as part of driver connector objects.
1028 * Zero on success, error code on failure.
1030 int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
1031 const struct drm_bridge_funcs *funcs)
1035 drm_modeset_lock_all(dev);
1037 ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
1042 bridge->funcs = funcs;
1044 list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
1045 dev->mode_config.num_bridge++;
1048 drm_modeset_unlock_all(dev);
1051 EXPORT_SYMBOL(drm_bridge_init);
1054 * drm_bridge_cleanup - cleans up an initialised bridge
1055 * @bridge: bridge to cleanup
1057 * Cleans up the bridge but doesn't free the object.
1059 void drm_bridge_cleanup(struct drm_bridge *bridge)
1061 struct drm_device *dev = bridge->dev;
1063 drm_modeset_lock_all(dev);
1064 drm_mode_object_put(dev, &bridge->base);
1065 list_del(&bridge->head);
1066 dev->mode_config.num_bridge--;
1067 drm_modeset_unlock_all(dev);
1069 memset(bridge, 0, sizeof(*bridge));
1071 EXPORT_SYMBOL(drm_bridge_cleanup);
1074 * drm_encoder_init - Init a preallocated encoder
1076 * @encoder: the encoder to init
1077 * @funcs: callbacks for this encoder
1078 * @encoder_type: user visible type of the encoder
1080 * Initialises a preallocated encoder. Encoder should be
1081 * subclassed as part of driver encoder objects.
1084 * Zero on success, error code on failure.
1086 int drm_encoder_init(struct drm_device *dev,
1087 struct drm_encoder *encoder,
1088 const struct drm_encoder_funcs *funcs,
1093 drm_modeset_lock_all(dev);
1095 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1100 encoder->encoder_type = encoder_type;
1101 encoder->funcs = funcs;
1102 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1103 drm_encoder_enum_list[encoder_type].name,
1105 if (!encoder->name) {
1110 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1111 dev->mode_config.num_encoder++;
1115 drm_mode_object_put(dev, &encoder->base);
1118 drm_modeset_unlock_all(dev);
1122 EXPORT_SYMBOL(drm_encoder_init);
1125 * drm_encoder_cleanup - cleans up an initialised encoder
1126 * @encoder: encoder to cleanup
1128 * Cleans up the encoder but doesn't free the object.
1130 void drm_encoder_cleanup(struct drm_encoder *encoder)
1132 struct drm_device *dev = encoder->dev;
1134 drm_modeset_lock_all(dev);
1135 drm_mode_object_put(dev, &encoder->base);
1136 kfree(encoder->name);
1137 list_del(&encoder->head);
1138 dev->mode_config.num_encoder--;
1139 drm_modeset_unlock_all(dev);
1141 memset(encoder, 0, sizeof(*encoder));
1143 EXPORT_SYMBOL(drm_encoder_cleanup);
1146 * drm_universal_plane_init - Initialize a new universal plane object
1148 * @plane: plane object to init
1149 * @possible_crtcs: bitmask of possible CRTCs
1150 * @funcs: callbacks for the new plane
1151 * @formats: array of supported formats (%DRM_FORMAT_*)
1152 * @format_count: number of elements in @formats
1153 * @type: type of plane (overlay, primary, cursor)
1155 * Initializes a plane object of type @type.
1158 * Zero on success, error code on failure.
1160 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1161 unsigned long possible_crtcs,
1162 const struct drm_plane_funcs *funcs,
1163 const uint32_t *formats, uint32_t format_count,
1164 enum drm_plane_type type)
1168 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1172 drm_modeset_lock_init(&plane->mutex);
1174 plane->base.properties = &plane->properties;
1176 plane->funcs = funcs;
1177 plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
1179 if (!plane->format_types) {
1180 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1181 drm_mode_object_put(dev, &plane->base);
1185 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1186 plane->format_count = format_count;
1187 plane->possible_crtcs = possible_crtcs;
1190 list_add_tail(&plane->head, &dev->mode_config.plane_list);
1191 dev->mode_config.num_total_plane++;
1192 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1193 dev->mode_config.num_overlay_plane++;
1195 drm_object_attach_property(&plane->base,
1196 dev->mode_config.plane_type_property,
1201 EXPORT_SYMBOL(drm_universal_plane_init);
1204 * drm_plane_init - Initialize a legacy plane
1206 * @plane: plane object to init
1207 * @possible_crtcs: bitmask of possible CRTCs
1208 * @funcs: callbacks for the new plane
1209 * @formats: array of supported formats (%DRM_FORMAT_*)
1210 * @format_count: number of elements in @formats
1211 * @is_primary: plane type (primary vs overlay)
1213 * Legacy API to initialize a DRM plane.
1215 * New drivers should call drm_universal_plane_init() instead.
1218 * Zero on success, error code on failure.
1220 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1221 unsigned long possible_crtcs,
1222 const struct drm_plane_funcs *funcs,
1223 const uint32_t *formats, uint32_t format_count,
1226 enum drm_plane_type type;
1228 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1229 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1230 formats, format_count, type);
1232 EXPORT_SYMBOL(drm_plane_init);
1235 * drm_plane_cleanup - Clean up the core plane usage
1236 * @plane: plane to cleanup
1238 * This function cleans up @plane and removes it from the DRM mode setting
1239 * core. Note that the function does *not* free the plane structure itself,
1240 * this is the responsibility of the caller.
1242 void drm_plane_cleanup(struct drm_plane *plane)
1244 struct drm_device *dev = plane->dev;
1246 drm_modeset_lock_all(dev);
1247 kfree(plane->format_types);
1248 drm_mode_object_put(dev, &plane->base);
1250 BUG_ON(list_empty(&plane->head));
1252 list_del(&plane->head);
1253 dev->mode_config.num_total_plane--;
1254 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1255 dev->mode_config.num_overlay_plane--;
1256 drm_modeset_unlock_all(dev);
1258 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1259 if (plane->state && plane->funcs->atomic_destroy_state)
1260 plane->funcs->atomic_destroy_state(plane, plane->state);
1262 memset(plane, 0, sizeof(*plane));
1264 EXPORT_SYMBOL(drm_plane_cleanup);
1267 * drm_plane_index - find the index of a registered plane
1268 * @plane: plane to find index for
1270 * Given a registered plane, return the index of that CRTC within a DRM
1271 * device's list of planes.
1273 unsigned int drm_plane_index(struct drm_plane *plane)
1275 unsigned int index = 0;
1276 struct drm_plane *tmp;
1278 list_for_each_entry(tmp, &plane->dev->mode_config.plane_list, head) {
1287 EXPORT_SYMBOL(drm_plane_index);
1290 * drm_plane_force_disable - Forcibly disable a plane
1291 * @plane: plane to disable
1293 * Forces the plane to be disabled.
1295 * Used when the plane's current framebuffer is destroyed,
1296 * and when restoring fbdev mode.
1298 void drm_plane_force_disable(struct drm_plane *plane)
1305 plane->old_fb = plane->fb;
1306 ret = plane->funcs->disable_plane(plane);
1308 DRM_ERROR("failed to disable plane with busy fb\n");
1309 plane->old_fb = NULL;
1312 /* disconnect the plane from the fb and crtc: */
1313 __drm_framebuffer_unreference(plane->old_fb);
1314 plane->old_fb = NULL;
1318 EXPORT_SYMBOL(drm_plane_force_disable);
1320 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
1322 struct drm_property *edid;
1323 struct drm_property *dpms;
1324 struct drm_property *dev_path;
1327 * Standard properties (apply to all connectors)
1329 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1330 DRM_MODE_PROP_IMMUTABLE,
1332 dev->mode_config.edid_property = edid;
1334 dpms = drm_property_create_enum(dev, 0,
1335 "DPMS", drm_dpms_enum_list,
1336 ARRAY_SIZE(drm_dpms_enum_list));
1337 dev->mode_config.dpms_property = dpms;
1339 dev_path = drm_property_create(dev,
1340 DRM_MODE_PROP_BLOB |
1341 DRM_MODE_PROP_IMMUTABLE,
1343 dev->mode_config.path_property = dev_path;
1348 static int drm_mode_create_standard_plane_properties(struct drm_device *dev)
1350 struct drm_property *type;
1353 * Standard properties (apply to all planes)
1355 type = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1356 "type", drm_plane_type_enum_list,
1357 ARRAY_SIZE(drm_plane_type_enum_list));
1358 dev->mode_config.plane_type_property = type;
1364 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1367 * Called by a driver the first time a DVI-I connector is made.
1369 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1371 struct drm_property *dvi_i_selector;
1372 struct drm_property *dvi_i_subconnector;
1374 if (dev->mode_config.dvi_i_select_subconnector_property)
1378 drm_property_create_enum(dev, 0,
1379 "select subconnector",
1380 drm_dvi_i_select_enum_list,
1381 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1382 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1384 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1386 drm_dvi_i_subconnector_enum_list,
1387 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1388 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1392 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1395 * drm_create_tv_properties - create TV specific connector properties
1397 * @num_modes: number of different TV formats (modes) supported
1398 * @modes: array of pointers to strings containing name of each format
1400 * Called by a driver's TV initialization routine, this function creates
1401 * the TV specific connector properties for a given device. Caller is
1402 * responsible for allocating a list of format names and passing them to
1405 int drm_mode_create_tv_properties(struct drm_device *dev,
1406 unsigned int num_modes,
1409 struct drm_property *tv_selector;
1410 struct drm_property *tv_subconnector;
1413 if (dev->mode_config.tv_select_subconnector_property)
1417 * Basic connector properties
1419 tv_selector = drm_property_create_enum(dev, 0,
1420 "select subconnector",
1421 drm_tv_select_enum_list,
1422 ARRAY_SIZE(drm_tv_select_enum_list));
1423 dev->mode_config.tv_select_subconnector_property = tv_selector;
1426 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1428 drm_tv_subconnector_enum_list,
1429 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1430 dev->mode_config.tv_subconnector_property = tv_subconnector;
1433 * Other, TV specific properties: margins & TV modes.
1435 dev->mode_config.tv_left_margin_property =
1436 drm_property_create_range(dev, 0, "left margin", 0, 100);
1438 dev->mode_config.tv_right_margin_property =
1439 drm_property_create_range(dev, 0, "right margin", 0, 100);
1441 dev->mode_config.tv_top_margin_property =
1442 drm_property_create_range(dev, 0, "top margin", 0, 100);
1444 dev->mode_config.tv_bottom_margin_property =
1445 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1447 dev->mode_config.tv_mode_property =
1448 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1450 for (i = 0; i < num_modes; i++)
1451 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1454 dev->mode_config.tv_brightness_property =
1455 drm_property_create_range(dev, 0, "brightness", 0, 100);
1457 dev->mode_config.tv_contrast_property =
1458 drm_property_create_range(dev, 0, "contrast", 0, 100);
1460 dev->mode_config.tv_flicker_reduction_property =
1461 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1463 dev->mode_config.tv_overscan_property =
1464 drm_property_create_range(dev, 0, "overscan", 0, 100);
1466 dev->mode_config.tv_saturation_property =
1467 drm_property_create_range(dev, 0, "saturation", 0, 100);
1469 dev->mode_config.tv_hue_property =
1470 drm_property_create_range(dev, 0, "hue", 0, 100);
1474 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1477 * drm_mode_create_scaling_mode_property - create scaling mode property
1480 * Called by a driver the first time it's needed, must be attached to desired
1483 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1485 struct drm_property *scaling_mode;
1487 if (dev->mode_config.scaling_mode_property)
1491 drm_property_create_enum(dev, 0, "scaling mode",
1492 drm_scaling_mode_enum_list,
1493 ARRAY_SIZE(drm_scaling_mode_enum_list));
1495 dev->mode_config.scaling_mode_property = scaling_mode;
1499 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1502 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1505 * Called by a driver the first time it's needed, must be attached to desired
1509 * Zero on success, negative errno on failure.
1511 int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1513 if (dev->mode_config.aspect_ratio_property)
1516 dev->mode_config.aspect_ratio_property =
1517 drm_property_create_enum(dev, 0, "aspect ratio",
1518 drm_aspect_ratio_enum_list,
1519 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1521 if (dev->mode_config.aspect_ratio_property == NULL)
1526 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1529 * drm_mode_create_dirty_property - create dirty property
1532 * Called by a driver the first time it's needed, must be attached to desired
1535 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1537 struct drm_property *dirty_info;
1539 if (dev->mode_config.dirty_info_property)
1543 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1545 drm_dirty_info_enum_list,
1546 ARRAY_SIZE(drm_dirty_info_enum_list));
1547 dev->mode_config.dirty_info_property = dirty_info;
1551 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1554 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1557 * Create the the suggested x/y offset property for connectors.
1559 int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1561 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1564 dev->mode_config.suggested_x_property =
1565 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1567 dev->mode_config.suggested_y_property =
1568 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1570 if (dev->mode_config.suggested_x_property == NULL ||
1571 dev->mode_config.suggested_y_property == NULL)
1575 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1577 static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
1579 uint32_t total_objects = 0;
1581 total_objects += dev->mode_config.num_crtc;
1582 total_objects += dev->mode_config.num_connector;
1583 total_objects += dev->mode_config.num_encoder;
1584 total_objects += dev->mode_config.num_bridge;
1586 group->id_list = kcalloc(total_objects, sizeof(uint32_t), GFP_KERNEL);
1587 if (!group->id_list)
1590 group->num_crtcs = 0;
1591 group->num_connectors = 0;
1592 group->num_encoders = 0;
1593 group->num_bridges = 0;
1597 void drm_mode_group_destroy(struct drm_mode_group *group)
1599 kfree(group->id_list);
1600 group->id_list = NULL;
1604 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1605 * the drm core's responsibility to set up mode control groups.
1607 int drm_mode_group_init_legacy_group(struct drm_device *dev,
1608 struct drm_mode_group *group)
1610 struct drm_crtc *crtc;
1611 struct drm_encoder *encoder;
1612 struct drm_connector *connector;
1613 struct drm_bridge *bridge;
1616 ret = drm_mode_group_init(dev, group);
1620 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1621 group->id_list[group->num_crtcs++] = crtc->base.id;
1623 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1624 group->id_list[group->num_crtcs + group->num_encoders++] =
1627 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1628 group->id_list[group->num_crtcs + group->num_encoders +
1629 group->num_connectors++] = connector->base.id;
1631 list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
1632 group->id_list[group->num_crtcs + group->num_encoders +
1633 group->num_connectors + group->num_bridges++] =
1638 EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
1640 void drm_reinit_primary_mode_group(struct drm_device *dev)
1642 drm_modeset_lock_all(dev);
1643 drm_mode_group_destroy(&dev->primary->mode_group);
1644 drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
1645 drm_modeset_unlock_all(dev);
1647 EXPORT_SYMBOL(drm_reinit_primary_mode_group);
1650 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1651 * @out: drm_mode_modeinfo struct to return to the user
1652 * @in: drm_display_mode to use
1654 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1657 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1658 const struct drm_display_mode *in)
1660 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1661 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1662 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1663 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1664 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1665 "timing values too large for mode info\n");
1667 out->clock = in->clock;
1668 out->hdisplay = in->hdisplay;
1669 out->hsync_start = in->hsync_start;
1670 out->hsync_end = in->hsync_end;
1671 out->htotal = in->htotal;
1672 out->hskew = in->hskew;
1673 out->vdisplay = in->vdisplay;
1674 out->vsync_start = in->vsync_start;
1675 out->vsync_end = in->vsync_end;
1676 out->vtotal = in->vtotal;
1677 out->vscan = in->vscan;
1678 out->vrefresh = in->vrefresh;
1679 out->flags = in->flags;
1680 out->type = in->type;
1681 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1682 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1686 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1687 * @out: drm_display_mode to return to the user
1688 * @in: drm_mode_modeinfo to use
1690 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1694 * Zero on success, negative errno on failure.
1696 static int drm_crtc_convert_umode(struct drm_display_mode *out,
1697 const struct drm_mode_modeinfo *in)
1699 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1702 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1705 out->clock = in->clock;
1706 out->hdisplay = in->hdisplay;
1707 out->hsync_start = in->hsync_start;
1708 out->hsync_end = in->hsync_end;
1709 out->htotal = in->htotal;
1710 out->hskew = in->hskew;
1711 out->vdisplay = in->vdisplay;
1712 out->vsync_start = in->vsync_start;
1713 out->vsync_end = in->vsync_end;
1714 out->vtotal = in->vtotal;
1715 out->vscan = in->vscan;
1716 out->vrefresh = in->vrefresh;
1717 out->flags = in->flags;
1718 out->type = in->type;
1719 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1720 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1726 * drm_mode_getresources - get graphics configuration
1727 * @dev: drm device for the ioctl
1728 * @data: data pointer for the ioctl
1729 * @file_priv: drm file for the ioctl call
1731 * Construct a set of configuration description structures and return
1732 * them to the user, including CRTC, connector and framebuffer configuration.
1734 * Called by the user via ioctl.
1737 * Zero on success, negative errno on failure.
1739 int drm_mode_getresources(struct drm_device *dev, void *data,
1740 struct drm_file *file_priv)
1742 struct drm_mode_card_res *card_res = data;
1743 struct list_head *lh;
1744 struct drm_framebuffer *fb;
1745 struct drm_connector *connector;
1746 struct drm_crtc *crtc;
1747 struct drm_encoder *encoder;
1749 int connector_count = 0;
1752 int encoder_count = 0;
1754 uint32_t __user *fb_id;
1755 uint32_t __user *crtc_id;
1756 uint32_t __user *connector_id;
1757 uint32_t __user *encoder_id;
1758 struct drm_mode_group *mode_group;
1760 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1764 mutex_lock(&file_priv->fbs_lock);
1766 * For the non-control nodes we need to limit the list of resources
1767 * by IDs in the group list for this node
1769 list_for_each(lh, &file_priv->fbs)
1772 /* handle this in 4 parts */
1774 if (card_res->count_fbs >= fb_count) {
1776 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1777 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1778 if (put_user(fb->base.id, fb_id + copied)) {
1779 mutex_unlock(&file_priv->fbs_lock);
1785 card_res->count_fbs = fb_count;
1786 mutex_unlock(&file_priv->fbs_lock);
1788 /* mode_config.mutex protects the connector list against e.g. DP MST
1789 * connector hot-adding. CRTC/Plane lists are invariant. */
1790 mutex_lock(&dev->mode_config.mutex);
1791 if (!drm_is_primary_client(file_priv)) {
1794 list_for_each(lh, &dev->mode_config.crtc_list)
1797 list_for_each(lh, &dev->mode_config.connector_list)
1800 list_for_each(lh, &dev->mode_config.encoder_list)
1804 mode_group = &file_priv->master->minor->mode_group;
1805 crtc_count = mode_group->num_crtcs;
1806 connector_count = mode_group->num_connectors;
1807 encoder_count = mode_group->num_encoders;
1810 card_res->max_height = dev->mode_config.max_height;
1811 card_res->min_height = dev->mode_config.min_height;
1812 card_res->max_width = dev->mode_config.max_width;
1813 card_res->min_width = dev->mode_config.min_width;
1816 if (card_res->count_crtcs >= crtc_count) {
1818 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1820 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1822 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1823 if (put_user(crtc->base.id, crtc_id + copied)) {
1830 for (i = 0; i < mode_group->num_crtcs; i++) {
1831 if (put_user(mode_group->id_list[i],
1832 crtc_id + copied)) {
1840 card_res->count_crtcs = crtc_count;
1843 if (card_res->count_encoders >= encoder_count) {
1845 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1847 list_for_each_entry(encoder,
1848 &dev->mode_config.encoder_list,
1850 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1852 if (put_user(encoder->base.id, encoder_id +
1860 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1861 if (put_user(mode_group->id_list[i],
1862 encoder_id + copied)) {
1871 card_res->count_encoders = encoder_count;
1874 if (card_res->count_connectors >= connector_count) {
1876 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1878 list_for_each_entry(connector,
1879 &dev->mode_config.connector_list,
1881 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1884 if (put_user(connector->base.id,
1885 connector_id + copied)) {
1892 int start = mode_group->num_crtcs +
1893 mode_group->num_encoders;
1894 for (i = start; i < start + mode_group->num_connectors; i++) {
1895 if (put_user(mode_group->id_list[i],
1896 connector_id + copied)) {
1904 card_res->count_connectors = connector_count;
1906 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1907 card_res->count_connectors, card_res->count_encoders);
1910 mutex_unlock(&dev->mode_config.mutex);
1915 * drm_mode_getcrtc - get CRTC configuration
1916 * @dev: drm device for the ioctl
1917 * @data: data pointer for the ioctl
1918 * @file_priv: drm file for the ioctl call
1920 * Construct a CRTC configuration structure to return to the user.
1922 * Called by the user via ioctl.
1925 * Zero on success, negative errno on failure.
1927 int drm_mode_getcrtc(struct drm_device *dev,
1928 void *data, struct drm_file *file_priv)
1930 struct drm_mode_crtc *crtc_resp = data;
1931 struct drm_crtc *crtc;
1933 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1936 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
1940 drm_modeset_lock_crtc(crtc, crtc->primary);
1941 crtc_resp->x = crtc->x;
1942 crtc_resp->y = crtc->y;
1943 crtc_resp->gamma_size = crtc->gamma_size;
1944 if (crtc->primary->fb)
1945 crtc_resp->fb_id = crtc->primary->fb->base.id;
1947 crtc_resp->fb_id = 0;
1949 if (crtc->enabled) {
1951 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1952 crtc_resp->mode_valid = 1;
1955 crtc_resp->mode_valid = 0;
1957 drm_modeset_unlock_crtc(crtc);
1962 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1963 const struct drm_file *file_priv)
1966 * If user-space hasn't configured the driver to expose the stereo 3D
1967 * modes, don't expose them.
1969 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1975 static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
1977 /* For atomic drivers only state objects are synchronously updated and
1978 * protected by modeset locks, so check those first. */
1979 if (connector->state)
1980 return connector->state->best_encoder;
1981 return connector->encoder;
1985 * drm_mode_getconnector - get connector configuration
1986 * @dev: drm device for the ioctl
1987 * @data: data pointer for the ioctl
1988 * @file_priv: drm file for the ioctl call
1990 * Construct a connector configuration structure to return to the user.
1992 * Called by the user via ioctl.
1995 * Zero on success, negative errno on failure.
1997 int drm_mode_getconnector(struct drm_device *dev, void *data,
1998 struct drm_file *file_priv)
2000 struct drm_mode_get_connector *out_resp = data;
2001 struct drm_connector *connector;
2002 struct drm_encoder *encoder;
2003 struct drm_display_mode *mode;
2005 int props_count = 0;
2006 int encoders_count = 0;
2010 struct drm_mode_modeinfo u_mode;
2011 struct drm_mode_modeinfo __user *mode_ptr;
2012 uint32_t __user *prop_ptr;
2013 uint64_t __user *prop_values;
2014 uint32_t __user *encoder_ptr;
2016 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2019 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
2021 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
2023 mutex_lock(&dev->mode_config.mutex);
2025 connector = drm_connector_find(dev, out_resp->connector_id);
2031 props_count = connector->properties.count;
2033 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
2034 if (connector->encoder_ids[i] != 0)
2037 if (out_resp->count_modes == 0) {
2038 connector->funcs->fill_modes(connector,
2039 dev->mode_config.max_width,
2040 dev->mode_config.max_height);
2043 /* delayed so we get modes regardless of pre-fill_modes state */
2044 list_for_each_entry(mode, &connector->modes, head)
2045 if (drm_mode_expose_to_userspace(mode, file_priv))
2048 out_resp->connector_id = connector->base.id;
2049 out_resp->connector_type = connector->connector_type;
2050 out_resp->connector_type_id = connector->connector_type_id;
2051 out_resp->mm_width = connector->display_info.width_mm;
2052 out_resp->mm_height = connector->display_info.height_mm;
2053 out_resp->subpixel = connector->display_info.subpixel_order;
2054 out_resp->connection = connector->status;
2055 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2057 encoder = drm_connector_get_encoder(connector);
2059 out_resp->encoder_id = encoder->base.id;
2061 out_resp->encoder_id = 0;
2062 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2065 * This ioctl is called twice, once to determine how much space is
2066 * needed, and the 2nd time to fill it.
2068 if ((out_resp->count_modes >= mode_count) && mode_count) {
2070 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
2071 list_for_each_entry(mode, &connector->modes, head) {
2072 if (!drm_mode_expose_to_userspace(mode, file_priv))
2075 drm_crtc_convert_to_umode(&u_mode, mode);
2076 if (copy_to_user(mode_ptr + copied,
2077 &u_mode, sizeof(u_mode))) {
2084 out_resp->count_modes = mode_count;
2086 if ((out_resp->count_props >= props_count) && props_count) {
2088 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
2089 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
2090 for (i = 0; i < connector->properties.count; i++) {
2091 if (put_user(connector->properties.ids[i],
2092 prop_ptr + copied)) {
2097 if (put_user(connector->properties.values[i],
2098 prop_values + copied)) {
2105 out_resp->count_props = props_count;
2107 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2109 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
2110 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2111 if (connector->encoder_ids[i] != 0) {
2112 if (put_user(connector->encoder_ids[i],
2113 encoder_ptr + copied)) {
2121 out_resp->count_encoders = encoders_count;
2124 mutex_unlock(&dev->mode_config.mutex);
2129 static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2131 struct drm_connector *connector;
2132 struct drm_device *dev = encoder->dev;
2133 bool uses_atomic = false;
2135 /* For atomic drivers only state objects are synchronously updated and
2136 * protected by modeset locks, so check those first. */
2137 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2138 if (!connector->state)
2143 if (connector->state->best_encoder != encoder)
2146 return connector->state->crtc;
2149 /* Don't return stale data (e.g. pending async disable). */
2153 return encoder->crtc;
2157 * drm_mode_getencoder - get encoder configuration
2158 * @dev: drm device for the ioctl
2159 * @data: data pointer for the ioctl
2160 * @file_priv: drm file for the ioctl call
2162 * Construct a encoder configuration structure to return to the user.
2164 * Called by the user via ioctl.
2167 * Zero on success, negative errno on failure.
2169 int drm_mode_getencoder(struct drm_device *dev, void *data,
2170 struct drm_file *file_priv)
2172 struct drm_mode_get_encoder *enc_resp = data;
2173 struct drm_encoder *encoder;
2174 struct drm_crtc *crtc;
2176 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2179 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
2183 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2184 crtc = drm_encoder_get_crtc(encoder);
2186 enc_resp->crtc_id = crtc->base.id;
2187 else if (encoder->crtc)
2188 enc_resp->crtc_id = encoder->crtc->base.id;
2190 enc_resp->crtc_id = 0;
2191 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2193 enc_resp->encoder_type = encoder->encoder_type;
2194 enc_resp->encoder_id = encoder->base.id;
2195 enc_resp->possible_crtcs = encoder->possible_crtcs;
2196 enc_resp->possible_clones = encoder->possible_clones;
2202 * drm_mode_getplane_res - enumerate all plane resources
2205 * @file_priv: DRM file info
2207 * Construct a list of plane ids to return to the user.
2209 * Called by the user via ioctl.
2212 * Zero on success, negative errno on failure.
2214 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2215 struct drm_file *file_priv)
2217 struct drm_mode_get_plane_res *plane_resp = data;
2218 struct drm_mode_config *config;
2219 struct drm_plane *plane;
2220 uint32_t __user *plane_ptr;
2222 unsigned num_planes;
2224 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2227 config = &dev->mode_config;
2229 if (file_priv->universal_planes)
2230 num_planes = config->num_total_plane;
2232 num_planes = config->num_overlay_plane;
2235 * This ioctl is called twice, once to determine how much space is
2236 * needed, and the 2nd time to fill it.
2239 (plane_resp->count_planes >= num_planes)) {
2240 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2242 /* Plane lists are invariant, no locking needed. */
2243 list_for_each_entry(plane, &config->plane_list, head) {
2245 * Unless userspace set the 'universal planes'
2246 * capability bit, only advertise overlays.
2248 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2249 !file_priv->universal_planes)
2252 if (put_user(plane->base.id, plane_ptr + copied))
2257 plane_resp->count_planes = num_planes;
2263 * drm_mode_getplane - get plane configuration
2266 * @file_priv: DRM file info
2268 * Construct a plane configuration structure to return to the user.
2270 * Called by the user via ioctl.
2273 * Zero on success, negative errno on failure.
2275 int drm_mode_getplane(struct drm_device *dev, void *data,
2276 struct drm_file *file_priv)
2278 struct drm_mode_get_plane *plane_resp = data;
2279 struct drm_plane *plane;
2280 uint32_t __user *format_ptr;
2282 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2285 plane = drm_plane_find(dev, plane_resp->plane_id);
2289 drm_modeset_lock(&plane->mutex, NULL);
2291 plane_resp->crtc_id = plane->crtc->base.id;
2293 plane_resp->crtc_id = 0;
2296 plane_resp->fb_id = plane->fb->base.id;
2298 plane_resp->fb_id = 0;
2299 drm_modeset_unlock(&plane->mutex);
2301 plane_resp->plane_id = plane->base.id;
2302 plane_resp->possible_crtcs = plane->possible_crtcs;
2303 plane_resp->gamma_size = 0;
2306 * This ioctl is called twice, once to determine how much space is
2307 * needed, and the 2nd time to fill it.
2309 if (plane->format_count &&
2310 (plane_resp->count_format_types >= plane->format_count)) {
2311 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2312 if (copy_to_user(format_ptr,
2313 plane->format_types,
2314 sizeof(uint32_t) * plane->format_count)) {
2318 plane_resp->count_format_types = plane->format_count;
2324 * setplane_internal - setplane handler for internal callers
2326 * Note that we assume an extra reference has already been taken on fb. If the
2327 * update fails, this reference will be dropped before return; if it succeeds,
2328 * the previous framebuffer (if any) will be unreferenced instead.
2330 * src_{x,y,w,h} are provided in 16.16 fixed point format
2332 static int __setplane_internal(struct drm_plane *plane,
2333 struct drm_crtc *crtc,
2334 struct drm_framebuffer *fb,
2335 int32_t crtc_x, int32_t crtc_y,
2336 uint32_t crtc_w, uint32_t crtc_h,
2337 /* src_{x,y,w,h} values are 16.16 fixed point */
2338 uint32_t src_x, uint32_t src_y,
2339 uint32_t src_w, uint32_t src_h)
2342 unsigned int fb_width, fb_height;
2345 /* No fb means shut it down */
2347 plane->old_fb = plane->fb;
2348 ret = plane->funcs->disable_plane(plane);
2353 plane->old_fb = NULL;
2358 /* Check whether this plane is usable on this CRTC */
2359 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2360 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2365 /* Check whether this plane supports the fb pixel format. */
2366 for (i = 0; i < plane->format_count; i++)
2367 if (fb->pixel_format == plane->format_types[i])
2369 if (i == plane->format_count) {
2370 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2371 drm_get_format_name(fb->pixel_format));
2376 fb_width = fb->width << 16;
2377 fb_height = fb->height << 16;
2379 /* Make sure source coordinates are inside the fb. */
2380 if (src_w > fb_width ||
2381 src_x > fb_width - src_w ||
2382 src_h > fb_height ||
2383 src_y > fb_height - src_h) {
2384 DRM_DEBUG_KMS("Invalid source coordinates "
2385 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2386 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2387 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2388 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2389 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2394 plane->old_fb = plane->fb;
2395 ret = plane->funcs->update_plane(plane, crtc, fb,
2396 crtc_x, crtc_y, crtc_w, crtc_h,
2397 src_x, src_y, src_w, src_h);
2403 plane->old_fb = NULL;
2408 drm_framebuffer_unreference(fb);
2410 drm_framebuffer_unreference(plane->old_fb);
2411 plane->old_fb = NULL;
2416 static int setplane_internal(struct drm_plane *plane,
2417 struct drm_crtc *crtc,
2418 struct drm_framebuffer *fb,
2419 int32_t crtc_x, int32_t crtc_y,
2420 uint32_t crtc_w, uint32_t crtc_h,
2421 /* src_{x,y,w,h} values are 16.16 fixed point */
2422 uint32_t src_x, uint32_t src_y,
2423 uint32_t src_w, uint32_t src_h)
2427 drm_modeset_lock_all(plane->dev);
2428 ret = __setplane_internal(plane, crtc, fb,
2429 crtc_x, crtc_y, crtc_w, crtc_h,
2430 src_x, src_y, src_w, src_h);
2431 drm_modeset_unlock_all(plane->dev);
2437 * drm_mode_setplane - configure a plane's configuration
2439 * @data: ioctl data*
2440 * @file_priv: DRM file info
2442 * Set plane configuration, including placement, fb, scaling, and other factors.
2443 * Or pass a NULL fb to disable (planes may be disabled without providing a
2447 * Zero on success, negative errno on failure.
2449 int drm_mode_setplane(struct drm_device *dev, void *data,
2450 struct drm_file *file_priv)
2452 struct drm_mode_set_plane *plane_req = data;
2453 struct drm_plane *plane;
2454 struct drm_crtc *crtc = NULL;
2455 struct drm_framebuffer *fb = NULL;
2457 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2460 /* Give drivers some help against integer overflows */
2461 if (plane_req->crtc_w > INT_MAX ||
2462 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2463 plane_req->crtc_h > INT_MAX ||
2464 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2465 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2466 plane_req->crtc_w, plane_req->crtc_h,
2467 plane_req->crtc_x, plane_req->crtc_y);
2472 * First, find the plane, crtc, and fb objects. If not available,
2473 * we don't bother to call the driver.
2475 plane = drm_plane_find(dev, plane_req->plane_id);
2477 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2478 plane_req->plane_id);
2482 if (plane_req->fb_id) {
2483 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2485 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2490 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2492 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2493 plane_req->crtc_id);
2499 * setplane_internal will take care of deref'ing either the old or new
2500 * framebuffer depending on success.
2502 return setplane_internal(plane, crtc, fb,
2503 plane_req->crtc_x, plane_req->crtc_y,
2504 plane_req->crtc_w, plane_req->crtc_h,
2505 plane_req->src_x, plane_req->src_y,
2506 plane_req->src_w, plane_req->src_h);
2510 * drm_mode_set_config_internal - helper to call ->set_config
2511 * @set: modeset config to set
2513 * This is a little helper to wrap internal calls to the ->set_config driver
2514 * interface. The only thing it adds is correct refcounting dance.
2517 * Zero on success, negative errno on failure.
2519 int drm_mode_set_config_internal(struct drm_mode_set *set)
2521 struct drm_crtc *crtc = set->crtc;
2522 struct drm_framebuffer *fb;
2523 struct drm_crtc *tmp;
2527 * NOTE: ->set_config can also disable other crtcs (if we steal all
2528 * connectors from it), hence we need to refcount the fbs across all
2529 * crtcs. Atomic modeset will have saner semantics ...
2531 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
2532 tmp->primary->old_fb = tmp->primary->fb;
2536 ret = crtc->funcs->set_config(set);
2538 crtc->primary->crtc = crtc;
2539 crtc->primary->fb = fb;
2542 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
2543 if (tmp->primary->fb)
2544 drm_framebuffer_reference(tmp->primary->fb);
2545 if (tmp->primary->old_fb)
2546 drm_framebuffer_unreference(tmp->primary->old_fb);
2547 tmp->primary->old_fb = NULL;
2552 EXPORT_SYMBOL(drm_mode_set_config_internal);
2555 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2557 * @crtc: CRTC that framebuffer will be displayed on
2560 * @mode: mode that framebuffer will be displayed under
2561 * @fb: framebuffer to check size of
2563 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2565 const struct drm_display_mode *mode,
2566 const struct drm_framebuffer *fb)
2569 int hdisplay, vdisplay;
2571 hdisplay = mode->hdisplay;
2572 vdisplay = mode->vdisplay;
2574 if (drm_mode_is_stereo(mode)) {
2575 struct drm_display_mode adjusted = *mode;
2577 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE);
2578 hdisplay = adjusted.crtc_hdisplay;
2579 vdisplay = adjusted.crtc_vdisplay;
2582 if (crtc->invert_dimensions)
2583 swap(hdisplay, vdisplay);
2585 if (hdisplay > fb->width ||
2586 vdisplay > fb->height ||
2587 x > fb->width - hdisplay ||
2588 y > fb->height - vdisplay) {
2589 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2590 fb->width, fb->height, hdisplay, vdisplay, x, y,
2591 crtc->invert_dimensions ? " (inverted)" : "");
2597 EXPORT_SYMBOL(drm_crtc_check_viewport);
2600 * drm_mode_setcrtc - set CRTC configuration
2601 * @dev: drm device for the ioctl
2602 * @data: data pointer for the ioctl
2603 * @file_priv: drm file for the ioctl call
2605 * Build a new CRTC configuration based on user request.
2607 * Called by the user via ioctl.
2610 * Zero on success, negative errno on failure.
2612 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2613 struct drm_file *file_priv)
2615 struct drm_mode_config *config = &dev->mode_config;
2616 struct drm_mode_crtc *crtc_req = data;
2617 struct drm_crtc *crtc;
2618 struct drm_connector **connector_set = NULL, *connector;
2619 struct drm_framebuffer *fb = NULL;
2620 struct drm_display_mode *mode = NULL;
2621 struct drm_mode_set set;
2622 uint32_t __user *set_connectors_ptr;
2626 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2629 /* For some reason crtc x/y offsets are signed internally. */
2630 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2633 drm_modeset_lock_all(dev);
2634 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2636 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2640 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2642 if (crtc_req->mode_valid) {
2643 /* If we have a mode we need a framebuffer. */
2644 /* If we pass -1, set the mode with the currently bound fb */
2645 if (crtc_req->fb_id == -1) {
2646 if (!crtc->primary->fb) {
2647 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2651 fb = crtc->primary->fb;
2652 /* Make refcounting symmetric with the lookup path. */
2653 drm_framebuffer_reference(fb);
2655 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2657 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2664 mode = drm_mode_create(dev);
2670 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2672 DRM_DEBUG_KMS("Invalid mode\n");
2676 mode->status = drm_mode_validate_basic(mode);
2677 if (mode->status != MODE_OK) {
2682 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2684 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2691 if (crtc_req->count_connectors == 0 && mode) {
2692 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2697 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2698 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2699 crtc_req->count_connectors);
2704 if (crtc_req->count_connectors > 0) {
2707 /* Avoid unbounded kernel memory allocation */
2708 if (crtc_req->count_connectors > config->num_connector) {
2713 connector_set = kmalloc_array(crtc_req->count_connectors,
2714 sizeof(struct drm_connector *),
2716 if (!connector_set) {
2721 for (i = 0; i < crtc_req->count_connectors; i++) {
2722 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2723 if (get_user(out_id, &set_connectors_ptr[i])) {
2728 connector = drm_connector_find(dev, out_id);
2730 DRM_DEBUG_KMS("Connector id %d unknown\n",
2735 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2739 connector_set[i] = connector;
2744 set.x = crtc_req->x;
2745 set.y = crtc_req->y;
2747 set.connectors = connector_set;
2748 set.num_connectors = crtc_req->count_connectors;
2750 ret = drm_mode_set_config_internal(&set);
2754 drm_framebuffer_unreference(fb);
2756 kfree(connector_set);
2757 drm_mode_destroy(dev, mode);
2758 drm_modeset_unlock_all(dev);
2763 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2764 * universal plane handler call
2765 * @crtc: crtc to update cursor for
2766 * @req: data pointer for the ioctl
2767 * @file_priv: drm file for the ioctl call
2769 * Legacy cursor ioctl's work directly with driver buffer handles. To
2770 * translate legacy ioctl calls into universal plane handler calls, we need to
2771 * wrap the native buffer handle in a drm_framebuffer.
2773 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2774 * buffer with a pitch of 4*width; the universal plane interface should be used
2775 * directly in cases where the hardware can support other buffer settings and
2776 * userspace wants to make use of these capabilities.
2779 * Zero on success, negative errno on failure.
2781 static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2782 struct drm_mode_cursor2 *req,
2783 struct drm_file *file_priv)
2785 struct drm_device *dev = crtc->dev;
2786 struct drm_framebuffer *fb = NULL;
2787 struct drm_mode_fb_cmd2 fbreq = {
2788 .width = req->width,
2789 .height = req->height,
2790 .pixel_format = DRM_FORMAT_ARGB8888,
2791 .pitches = { req->width * 4 },
2792 .handles = { req->handle },
2794 int32_t crtc_x, crtc_y;
2795 uint32_t crtc_w = 0, crtc_h = 0;
2796 uint32_t src_w = 0, src_h = 0;
2799 BUG_ON(!crtc->cursor);
2800 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
2803 * Obtain fb we'll be using (either new or existing) and take an extra
2804 * reference to it if fb != null. setplane will take care of dropping
2805 * the reference if the plane update fails.
2807 if (req->flags & DRM_MODE_CURSOR_BO) {
2809 fb = add_framebuffer_internal(dev, &fbreq, file_priv);
2811 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2815 drm_framebuffer_reference(fb);
2820 fb = crtc->cursor->fb;
2822 drm_framebuffer_reference(fb);
2825 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2829 crtc_x = crtc->cursor_x;
2830 crtc_y = crtc->cursor_y;
2835 crtc_h = fb->height;
2836 src_w = fb->width << 16;
2837 src_h = fb->height << 16;
2841 * setplane_internal will take care of deref'ing either the old or new
2842 * framebuffer depending on success.
2844 ret = __setplane_internal(crtc->cursor, crtc, fb,
2845 crtc_x, crtc_y, crtc_w, crtc_h,
2846 0, 0, src_w, src_h);
2848 /* Update successful; save new cursor position, if necessary */
2849 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2850 crtc->cursor_x = req->x;
2851 crtc->cursor_y = req->y;
2857 static int drm_mode_cursor_common(struct drm_device *dev,
2858 struct drm_mode_cursor2 *req,
2859 struct drm_file *file_priv)
2861 struct drm_crtc *crtc;
2864 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2867 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2870 crtc = drm_crtc_find(dev, req->crtc_id);
2872 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2877 * If this crtc has a universal cursor plane, call that plane's update
2878 * handler rather than using legacy cursor handlers.
2880 drm_modeset_lock_crtc(crtc, crtc->cursor);
2882 ret = drm_mode_cursor_universal(crtc, req, file_priv);
2886 if (req->flags & DRM_MODE_CURSOR_BO) {
2887 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
2891 /* Turns off the cursor if handle is 0 */
2892 if (crtc->funcs->cursor_set2)
2893 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2894 req->width, req->height, req->hot_x, req->hot_y);
2896 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2897 req->width, req->height);
2900 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2901 if (crtc->funcs->cursor_move) {
2902 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2909 drm_modeset_unlock_crtc(crtc);
2917 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2918 * @dev: drm device for the ioctl
2919 * @data: data pointer for the ioctl
2920 * @file_priv: drm file for the ioctl call
2922 * Set the cursor configuration based on user request.
2924 * Called by the user via ioctl.
2927 * Zero on success, negative errno on failure.
2929 int drm_mode_cursor_ioctl(struct drm_device *dev,
2930 void *data, struct drm_file *file_priv)
2932 struct drm_mode_cursor *req = data;
2933 struct drm_mode_cursor2 new_req;
2935 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2936 new_req.hot_x = new_req.hot_y = 0;
2938 return drm_mode_cursor_common(dev, &new_req, file_priv);
2942 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2943 * @dev: drm device for the ioctl
2944 * @data: data pointer for the ioctl
2945 * @file_priv: drm file for the ioctl call
2947 * Set the cursor configuration based on user request. This implements the 2nd
2948 * version of the cursor ioctl, which allows userspace to additionally specify
2949 * the hotspot of the pointer.
2951 * Called by the user via ioctl.
2954 * Zero on success, negative errno on failure.
2956 int drm_mode_cursor2_ioctl(struct drm_device *dev,
2957 void *data, struct drm_file *file_priv)
2959 struct drm_mode_cursor2 *req = data;
2961 return drm_mode_cursor_common(dev, req, file_priv);
2965 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2966 * @bpp: bits per pixels
2967 * @depth: bit depth per pixel
2969 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2970 * Useful in fbdev emulation code, since that deals in those values.
2972 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2978 fmt = DRM_FORMAT_C8;
2982 fmt = DRM_FORMAT_XRGB1555;
2984 fmt = DRM_FORMAT_RGB565;
2987 fmt = DRM_FORMAT_RGB888;
2991 fmt = DRM_FORMAT_XRGB8888;
2992 else if (depth == 30)
2993 fmt = DRM_FORMAT_XRGB2101010;
2995 fmt = DRM_FORMAT_ARGB8888;
2998 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2999 fmt = DRM_FORMAT_XRGB8888;
3005 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3008 * drm_mode_addfb - add an FB to the graphics configuration
3009 * @dev: drm device for the ioctl
3010 * @data: data pointer for the ioctl
3011 * @file_priv: drm file for the ioctl call
3013 * Add a new FB to the specified CRTC, given a user request. This is the
3014 * original addfb ioctl which only supported RGB formats.
3016 * Called by the user via ioctl.
3019 * Zero on success, negative errno on failure.
3021 int drm_mode_addfb(struct drm_device *dev,
3022 void *data, struct drm_file *file_priv)
3024 struct drm_mode_fb_cmd *or = data;
3025 struct drm_mode_fb_cmd2 r = {};
3028 /* convert to new format and call new ioctl */
3029 r.fb_id = or->fb_id;
3030 r.width = or->width;
3031 r.height = or->height;
3032 r.pitches[0] = or->pitch;
3033 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3034 r.handles[0] = or->handle;
3036 ret = drm_mode_addfb2(dev, &r, file_priv);
3040 or->fb_id = r.fb_id;
3045 static int format_check(const struct drm_mode_fb_cmd2 *r)
3047 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3051 case DRM_FORMAT_RGB332:
3052 case DRM_FORMAT_BGR233:
3053 case DRM_FORMAT_XRGB4444:
3054 case DRM_FORMAT_XBGR4444:
3055 case DRM_FORMAT_RGBX4444:
3056 case DRM_FORMAT_BGRX4444:
3057 case DRM_FORMAT_ARGB4444:
3058 case DRM_FORMAT_ABGR4444:
3059 case DRM_FORMAT_RGBA4444:
3060 case DRM_FORMAT_BGRA4444:
3061 case DRM_FORMAT_XRGB1555:
3062 case DRM_FORMAT_XBGR1555:
3063 case DRM_FORMAT_RGBX5551:
3064 case DRM_FORMAT_BGRX5551:
3065 case DRM_FORMAT_ARGB1555:
3066 case DRM_FORMAT_ABGR1555:
3067 case DRM_FORMAT_RGBA5551:
3068 case DRM_FORMAT_BGRA5551:
3069 case DRM_FORMAT_RGB565:
3070 case DRM_FORMAT_BGR565:
3071 case DRM_FORMAT_RGB888:
3072 case DRM_FORMAT_BGR888:
3073 case DRM_FORMAT_XRGB8888:
3074 case DRM_FORMAT_XBGR8888:
3075 case DRM_FORMAT_RGBX8888:
3076 case DRM_FORMAT_BGRX8888:
3077 case DRM_FORMAT_ARGB8888:
3078 case DRM_FORMAT_ABGR8888:
3079 case DRM_FORMAT_RGBA8888:
3080 case DRM_FORMAT_BGRA8888:
3081 case DRM_FORMAT_XRGB2101010:
3082 case DRM_FORMAT_XBGR2101010:
3083 case DRM_FORMAT_RGBX1010102:
3084 case DRM_FORMAT_BGRX1010102:
3085 case DRM_FORMAT_ARGB2101010:
3086 case DRM_FORMAT_ABGR2101010:
3087 case DRM_FORMAT_RGBA1010102:
3088 case DRM_FORMAT_BGRA1010102:
3089 case DRM_FORMAT_YUYV:
3090 case DRM_FORMAT_YVYU:
3091 case DRM_FORMAT_UYVY:
3092 case DRM_FORMAT_VYUY:
3093 case DRM_FORMAT_AYUV:
3094 case DRM_FORMAT_NV12:
3095 case DRM_FORMAT_NV21:
3096 case DRM_FORMAT_NV16:
3097 case DRM_FORMAT_NV61:
3098 case DRM_FORMAT_NV24:
3099 case DRM_FORMAT_NV42:
3100 case DRM_FORMAT_YUV410:
3101 case DRM_FORMAT_YVU410:
3102 case DRM_FORMAT_YUV411:
3103 case DRM_FORMAT_YVU411:
3104 case DRM_FORMAT_YUV420:
3105 case DRM_FORMAT_YVU420:
3106 case DRM_FORMAT_YUV422:
3107 case DRM_FORMAT_YVU422:
3108 case DRM_FORMAT_YUV444:
3109 case DRM_FORMAT_YVU444:
3112 DRM_DEBUG_KMS("invalid pixel format %s\n",
3113 drm_get_format_name(r->pixel_format));
3118 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
3120 int ret, hsub, vsub, num_planes, i;
3122 ret = format_check(r);
3124 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3125 drm_get_format_name(r->pixel_format));
3129 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3130 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3131 num_planes = drm_format_num_planes(r->pixel_format);
3133 if (r->width == 0 || r->width % hsub) {
3134 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
3138 if (r->height == 0 || r->height % vsub) {
3139 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
3143 for (i = 0; i < num_planes; i++) {
3144 unsigned int width = r->width / (i != 0 ? hsub : 1);
3145 unsigned int height = r->height / (i != 0 ? vsub : 1);
3146 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
3148 if (!r->handles[i]) {
3149 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
3153 if ((uint64_t) width * cpp > UINT_MAX)
3156 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3159 if (r->pitches[i] < width * cpp) {
3160 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
3168 static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
3169 struct drm_mode_fb_cmd2 *r,
3170 struct drm_file *file_priv)
3172 struct drm_mode_config *config = &dev->mode_config;
3173 struct drm_framebuffer *fb;
3176 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
3177 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
3178 return ERR_PTR(-EINVAL);
3181 if ((config->min_width > r->width) || (r->width > config->max_width)) {
3182 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3183 r->width, config->min_width, config->max_width);
3184 return ERR_PTR(-EINVAL);
3186 if ((config->min_height > r->height) || (r->height > config->max_height)) {
3187 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3188 r->height, config->min_height, config->max_height);
3189 return ERR_PTR(-EINVAL);
3192 ret = framebuffer_check(r);
3194 return ERR_PTR(ret);
3196 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
3198 DRM_DEBUG_KMS("could not create framebuffer\n");
3202 mutex_lock(&file_priv->fbs_lock);
3203 r->fb_id = fb->base.id;
3204 list_add(&fb->filp_head, &file_priv->fbs);
3205 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3206 mutex_unlock(&file_priv->fbs_lock);
3212 * drm_mode_addfb2 - add an FB to the graphics configuration
3213 * @dev: drm device for the ioctl
3214 * @data: data pointer for the ioctl
3215 * @file_priv: drm file for the ioctl call
3217 * Add a new FB to the specified CRTC, given a user request with format. This is
3218 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3219 * and uses fourcc codes as pixel format specifiers.
3221 * Called by the user via ioctl.
3224 * Zero on success, negative errno on failure.
3226 int drm_mode_addfb2(struct drm_device *dev,
3227 void *data, struct drm_file *file_priv)
3229 struct drm_framebuffer *fb;
3231 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3234 fb = add_framebuffer_internal(dev, data, file_priv);
3242 * drm_mode_rmfb - remove an FB from the configuration
3243 * @dev: drm device for the ioctl
3244 * @data: data pointer for the ioctl
3245 * @file_priv: drm file for the ioctl call
3247 * Remove the FB specified by the user.
3249 * Called by the user via ioctl.
3252 * Zero on success, negative errno on failure.
3254 int drm_mode_rmfb(struct drm_device *dev,
3255 void *data, struct drm_file *file_priv)
3257 struct drm_framebuffer *fb = NULL;
3258 struct drm_framebuffer *fbl = NULL;
3259 uint32_t *id = data;
3262 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3265 mutex_lock(&file_priv->fbs_lock);
3266 mutex_lock(&dev->mode_config.fb_lock);
3267 fb = __drm_framebuffer_lookup(dev, *id);
3271 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3277 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3278 __drm_framebuffer_unregister(dev, fb);
3280 list_del_init(&fb->filp_head);
3281 mutex_unlock(&dev->mode_config.fb_lock);
3282 mutex_unlock(&file_priv->fbs_lock);
3284 drm_framebuffer_remove(fb);
3289 mutex_unlock(&dev->mode_config.fb_lock);
3290 mutex_unlock(&file_priv->fbs_lock);
3296 * drm_mode_getfb - get FB info
3297 * @dev: drm device for the ioctl
3298 * @data: data pointer for the ioctl
3299 * @file_priv: drm file for the ioctl call
3301 * Lookup the FB given its ID and return info about it.
3303 * Called by the user via ioctl.
3306 * Zero on success, negative errno on failure.
3308 int drm_mode_getfb(struct drm_device *dev,
3309 void *data, struct drm_file *file_priv)
3311 struct drm_mode_fb_cmd *r = data;
3312 struct drm_framebuffer *fb;
3315 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3318 fb = drm_framebuffer_lookup(dev, r->fb_id);
3322 r->height = fb->height;
3323 r->width = fb->width;
3324 r->depth = fb->depth;
3325 r->bpp = fb->bits_per_pixel;
3326 r->pitch = fb->pitches[0];
3327 if (fb->funcs->create_handle) {
3328 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
3329 drm_is_control_client(file_priv)) {
3330 ret = fb->funcs->create_handle(fb, file_priv,
3333 /* GET_FB() is an unprivileged ioctl so we must not
3334 * return a buffer-handle to non-master processes! For
3335 * backwards-compatibility reasons, we cannot make
3336 * GET_FB() privileged, so just return an invalid handle
3337 * for non-masters. */
3345 drm_framebuffer_unreference(fb);
3351 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3352 * @dev: drm device for the ioctl
3353 * @data: data pointer for the ioctl
3354 * @file_priv: drm file for the ioctl call
3356 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3357 * rectangle list. Generic userspace which does frontbuffer rendering must call
3358 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3359 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3361 * Modesetting drivers which always update the frontbuffer do not need to
3362 * implement the corresponding ->dirty framebuffer callback.
3364 * Called by the user via ioctl.
3367 * Zero on success, negative errno on failure.
3369 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3370 void *data, struct drm_file *file_priv)
3372 struct drm_clip_rect __user *clips_ptr;
3373 struct drm_clip_rect *clips = NULL;
3374 struct drm_mode_fb_dirty_cmd *r = data;
3375 struct drm_framebuffer *fb;
3380 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3383 fb = drm_framebuffer_lookup(dev, r->fb_id);
3387 num_clips = r->num_clips;
3388 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3390 if (!num_clips != !clips_ptr) {
3395 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3397 /* If userspace annotates copy, clips must come in pairs */
3398 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3403 if (num_clips && clips_ptr) {
3404 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3408 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
3414 ret = copy_from_user(clips, clips_ptr,
3415 num_clips * sizeof(*clips));
3422 if (fb->funcs->dirty) {
3423 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3432 drm_framebuffer_unreference(fb);
3439 * drm_fb_release - remove and free the FBs on this file
3440 * @priv: drm file for the ioctl
3442 * Destroy all the FBs associated with @filp.
3444 * Called by the user via ioctl.
3447 * Zero on success, negative errno on failure.
3449 void drm_fb_release(struct drm_file *priv)
3451 struct drm_device *dev = priv->minor->dev;
3452 struct drm_framebuffer *fb, *tfb;
3455 * When the file gets released that means no one else can access the fb
3456 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3457 * avoid upsetting lockdep since the universal cursor code adds a
3458 * framebuffer while holding mutex locks.
3460 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3461 * locks is impossible here since no one else but this function can get
3464 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3466 mutex_lock(&dev->mode_config.fb_lock);
3467 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3468 __drm_framebuffer_unregister(dev, fb);
3469 mutex_unlock(&dev->mode_config.fb_lock);
3471 list_del_init(&fb->filp_head);
3473 /* This will also drop the fpriv->fbs reference. */
3474 drm_framebuffer_remove(fb);
3479 * drm_property_create - create a new property type
3481 * @flags: flags specifying the property type
3482 * @name: name of the property
3483 * @num_values: number of pre-defined values
3485 * This creates a new generic drm property which can then be attached to a drm
3486 * object with drm_object_attach_property. The returned property object must be
3487 * freed with drm_property_destroy.
3489 * Note that the DRM core keeps a per-device list of properties and that, if
3490 * drm_mode_config_cleanup() is called, it will destroy all properties created
3494 * A pointer to the newly created property on success, NULL on failure.
3496 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3497 const char *name, int num_values)
3499 struct drm_property *property = NULL;
3502 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3506 property->dev = dev;
3509 property->values = kcalloc(num_values, sizeof(uint64_t),
3511 if (!property->values)
3515 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3519 property->flags = flags;
3520 property->num_values = num_values;
3521 INIT_LIST_HEAD(&property->enum_list);
3524 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3525 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3528 list_add_tail(&property->head, &dev->mode_config.property_list);
3530 WARN_ON(!drm_property_type_valid(property));
3534 kfree(property->values);
3538 EXPORT_SYMBOL(drm_property_create);
3541 * drm_property_create_enum - create a new enumeration property type
3543 * @flags: flags specifying the property type
3544 * @name: name of the property
3545 * @props: enumeration lists with property values
3546 * @num_values: number of pre-defined values
3548 * This creates a new generic drm property which can then be attached to a drm
3549 * object with drm_object_attach_property. The returned property object must be
3550 * freed with drm_property_destroy.
3552 * Userspace is only allowed to set one of the predefined values for enumeration
3556 * A pointer to the newly created property on success, NULL on failure.
3558 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3560 const struct drm_prop_enum_list *props,
3563 struct drm_property *property;
3566 flags |= DRM_MODE_PROP_ENUM;
3568 property = drm_property_create(dev, flags, name, num_values);
3572 for (i = 0; i < num_values; i++) {
3573 ret = drm_property_add_enum(property, i,
3577 drm_property_destroy(dev, property);
3584 EXPORT_SYMBOL(drm_property_create_enum);
3587 * drm_property_create_bitmask - create a new bitmask property type
3589 * @flags: flags specifying the property type
3590 * @name: name of the property
3591 * @props: enumeration lists with property bitflags
3592 * @num_props: size of the @props array
3593 * @supported_bits: bitmask of all supported enumeration values
3595 * This creates a new bitmask drm property which can then be attached to a drm
3596 * object with drm_object_attach_property. The returned property object must be
3597 * freed with drm_property_destroy.
3599 * Compared to plain enumeration properties userspace is allowed to set any
3600 * or'ed together combination of the predefined property bitflag values
3603 * A pointer to the newly created property on success, NULL on failure.
3605 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3606 int flags, const char *name,
3607 const struct drm_prop_enum_list *props,
3609 uint64_t supported_bits)
3611 struct drm_property *property;
3612 int i, ret, index = 0;
3613 int num_values = hweight64(supported_bits);
3615 flags |= DRM_MODE_PROP_BITMASK;
3617 property = drm_property_create(dev, flags, name, num_values);
3620 for (i = 0; i < num_props; i++) {
3621 if (!(supported_bits & (1ULL << props[i].type)))
3624 if (WARN_ON(index >= num_values)) {
3625 drm_property_destroy(dev, property);
3629 ret = drm_property_add_enum(property, index++,
3633 drm_property_destroy(dev, property);
3640 EXPORT_SYMBOL(drm_property_create_bitmask);
3642 static struct drm_property *property_create_range(struct drm_device *dev,
3643 int flags, const char *name,
3644 uint64_t min, uint64_t max)
3646 struct drm_property *property;
3648 property = drm_property_create(dev, flags, name, 2);
3652 property->values[0] = min;
3653 property->values[1] = max;
3659 * drm_property_create_range - create a new ranged property type
3661 * @flags: flags specifying the property type
3662 * @name: name of the property
3663 * @min: minimum value of the property
3664 * @max: maximum value of the property
3666 * This creates a new generic drm property which can then be attached to a drm
3667 * object with drm_object_attach_property. The returned property object must be
3668 * freed with drm_property_destroy.
3670 * Userspace is allowed to set any integer value in the (min, max) range
3674 * A pointer to the newly created property on success, NULL on failure.
3676 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3678 uint64_t min, uint64_t max)
3680 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3683 EXPORT_SYMBOL(drm_property_create_range);
3685 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3686 int flags, const char *name,
3687 int64_t min, int64_t max)
3689 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3690 name, I642U64(min), I642U64(max));
3692 EXPORT_SYMBOL(drm_property_create_signed_range);
3694 struct drm_property *drm_property_create_object(struct drm_device *dev,
3695 int flags, const char *name, uint32_t type)
3697 struct drm_property *property;
3699 flags |= DRM_MODE_PROP_OBJECT;
3701 property = drm_property_create(dev, flags, name, 1);
3705 property->values[0] = type;
3709 EXPORT_SYMBOL(drm_property_create_object);
3712 * drm_property_add_enum - add a possible value to an enumeration property
3713 * @property: enumeration property to change
3714 * @index: index of the new enumeration
3715 * @value: value of the new enumeration
3716 * @name: symbolic name of the new enumeration
3718 * This functions adds enumerations to a property.
3720 * It's use is deprecated, drivers should use one of the more specific helpers
3721 * to directly create the property with all enumerations already attached.
3724 * Zero on success, error code on failure.
3726 int drm_property_add_enum(struct drm_property *property, int index,
3727 uint64_t value, const char *name)
3729 struct drm_property_enum *prop_enum;
3731 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3732 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
3736 * Bitmask enum properties have the additional constraint of values
3739 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3743 if (!list_empty(&property->enum_list)) {
3744 list_for_each_entry(prop_enum, &property->enum_list, head) {
3745 if (prop_enum->value == value) {
3746 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3747 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3753 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3757 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3758 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3759 prop_enum->value = value;
3761 property->values[index] = value;
3762 list_add_tail(&prop_enum->head, &property->enum_list);
3765 EXPORT_SYMBOL(drm_property_add_enum);
3768 * drm_property_destroy - destroy a drm property
3770 * @property: property to destry
3772 * This function frees a property including any attached resources like
3773 * enumeration values.
3775 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3777 struct drm_property_enum *prop_enum, *pt;
3779 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
3780 list_del(&prop_enum->head);
3784 if (property->num_values)
3785 kfree(property->values);
3786 drm_mode_object_put(dev, &property->base);
3787 list_del(&property->head);
3790 EXPORT_SYMBOL(drm_property_destroy);
3793 * drm_object_attach_property - attach a property to a modeset object
3794 * @obj: drm modeset object
3795 * @property: property to attach
3796 * @init_val: initial value of the property
3798 * This attaches the given property to the modeset object with the given initial
3799 * value. Currently this function cannot fail since the properties are stored in
3800 * a statically sized array.
3802 void drm_object_attach_property(struct drm_mode_object *obj,
3803 struct drm_property *property,
3806 int count = obj->properties->count;
3808 if (count == DRM_OBJECT_MAX_PROPERTY) {
3809 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3810 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3811 "you see this message on the same object type.\n",
3816 obj->properties->ids[count] = property->base.id;
3817 obj->properties->values[count] = init_val;
3818 obj->properties->count++;
3820 EXPORT_SYMBOL(drm_object_attach_property);
3823 * drm_object_property_set_value - set the value of a property
3824 * @obj: drm mode object to set property value for
3825 * @property: property to set
3826 * @val: value the property should be set to
3828 * This functions sets a given property on a given object. This function only
3829 * changes the software state of the property, it does not call into the
3830 * driver's ->set_property callback.
3833 * Zero on success, error code on failure.
3835 int drm_object_property_set_value(struct drm_mode_object *obj,
3836 struct drm_property *property, uint64_t val)
3840 for (i = 0; i < obj->properties->count; i++) {
3841 if (obj->properties->ids[i] == property->base.id) {
3842 obj->properties->values[i] = val;
3849 EXPORT_SYMBOL(drm_object_property_set_value);
3852 * drm_object_property_get_value - retrieve the value of a property
3853 * @obj: drm mode object to get property value from
3854 * @property: property to retrieve
3855 * @val: storage for the property value
3857 * This function retrieves the softare state of the given property for the given
3858 * property. Since there is no driver callback to retrieve the current property
3859 * value this might be out of sync with the hardware, depending upon the driver
3863 * Zero on success, error code on failure.
3865 int drm_object_property_get_value(struct drm_mode_object *obj,
3866 struct drm_property *property, uint64_t *val)
3870 for (i = 0; i < obj->properties->count; i++) {
3871 if (obj->properties->ids[i] == property->base.id) {
3872 *val = obj->properties->values[i];
3879 EXPORT_SYMBOL(drm_object_property_get_value);
3882 * drm_mode_getproperty_ioctl - get the property metadata
3885 * @file_priv: DRM file info
3887 * This function retrieves the metadata for a given property, like the different
3888 * possible values for an enum property or the limits for a range property.
3890 * Blob properties are special
3892 * Called by the user via ioctl.
3895 * Zero on success, negative errno on failure.
3897 int drm_mode_getproperty_ioctl(struct drm_device *dev,
3898 void *data, struct drm_file *file_priv)
3900 struct drm_mode_get_property *out_resp = data;
3901 struct drm_property *property;
3903 int value_count = 0;
3906 struct drm_property_enum *prop_enum;
3907 struct drm_mode_property_enum __user *enum_ptr;
3908 uint64_t __user *values_ptr;
3910 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3913 drm_modeset_lock_all(dev);
3914 property = drm_property_find(dev, out_resp->prop_id);
3920 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3921 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3922 list_for_each_entry(prop_enum, &property->enum_list, head)
3926 value_count = property->num_values;
3928 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
3929 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
3930 out_resp->flags = property->flags;
3932 if ((out_resp->count_values >= value_count) && value_count) {
3933 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
3934 for (i = 0; i < value_count; i++) {
3935 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
3941 out_resp->count_values = value_count;
3943 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3944 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3945 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
3947 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3948 list_for_each_entry(prop_enum, &property->enum_list, head) {
3950 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
3955 if (copy_to_user(&enum_ptr[copied].name,
3956 &prop_enum->name, DRM_PROP_NAME_LEN)) {
3963 out_resp->count_enum_blobs = enum_count;
3967 * NOTE: The idea seems to have been to use this to read all the blob
3968 * property values. But nothing ever added them to the corresponding
3969 * list, userspace always used the special-purpose get_blob ioctl to
3970 * read the value for a blob property. It also doesn't make a lot of
3971 * sense to return values here when everything else is just metadata for
3972 * the property itself.
3974 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
3975 out_resp->count_enum_blobs = 0;
3977 drm_modeset_unlock_all(dev);
3981 static struct drm_property_blob *
3982 drm_property_create_blob(struct drm_device *dev, size_t length,
3985 struct drm_property_blob *blob;
3988 if (!length || !data)
3991 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
3995 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
4001 blob->length = length;
4003 memcpy(blob->data, data, length);
4005 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
4009 static void drm_property_destroy_blob(struct drm_device *dev,
4010 struct drm_property_blob *blob)
4012 drm_mode_object_put(dev, &blob->base);
4013 list_del(&blob->head);
4018 * drm_mode_getblob_ioctl - get the contents of a blob property value
4021 * @file_priv: DRM file info
4023 * This function retrieves the contents of a blob property. The value stored in
4024 * an object's blob property is just a normal modeset object id.
4026 * Called by the user via ioctl.
4029 * Zero on success, negative errno on failure.
4031 int drm_mode_getblob_ioctl(struct drm_device *dev,
4032 void *data, struct drm_file *file_priv)
4034 struct drm_mode_get_blob *out_resp = data;
4035 struct drm_property_blob *blob;
4037 void __user *blob_ptr;
4039 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4042 drm_modeset_lock_all(dev);
4043 blob = drm_property_blob_find(dev, out_resp->blob_id);
4049 if (out_resp->length == blob->length) {
4050 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4051 if (copy_to_user(blob_ptr, blob->data, blob->length)) {
4056 out_resp->length = blob->length;
4059 drm_modeset_unlock_all(dev);
4064 * drm_mode_connector_set_path_property - set tile property on connector
4065 * @connector: connector to set property on.
4066 * @path: path to use for property.
4068 * This creates a property to expose to userspace to specify a
4069 * connector path. This is mainly used for DisplayPort MST where
4070 * connectors have a topology and we want to allow userspace to give
4071 * them more meaningful names.
4074 * Zero on success, negative errno on failure.
4076 int drm_mode_connector_set_path_property(struct drm_connector *connector,
4079 struct drm_device *dev = connector->dev;
4080 size_t size = strlen(path) + 1;
4083 connector->path_blob_ptr = drm_property_create_blob(connector->dev,
4085 if (!connector->path_blob_ptr)
4088 ret = drm_object_property_set_value(&connector->base,
4089 dev->mode_config.path_property,
4090 connector->path_blob_ptr->base.id);
4093 EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4096 * drm_mode_connector_update_edid_property - update the edid property of a connector
4097 * @connector: drm connector
4098 * @edid: new value of the edid property
4100 * This function creates a new blob modeset object and assigns its id to the
4101 * connector's edid property.
4104 * Zero on success, negative errno on failure.
4106 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4107 const struct edid *edid)
4109 struct drm_device *dev = connector->dev;
4113 /* ignore requests to set edid when overridden */
4114 if (connector->override_edid)
4117 if (connector->edid_blob_ptr)
4118 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
4120 /* Delete edid, when there is none. */
4122 connector->edid_blob_ptr = NULL;
4123 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
4127 size = EDID_LENGTH * (1 + edid->extensions);
4128 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
4130 if (!connector->edid_blob_ptr)
4133 ret = drm_object_property_set_value(&connector->base,
4134 dev->mode_config.edid_property,
4135 connector->edid_blob_ptr->base.id);
4139 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4141 static bool drm_property_change_is_valid(struct drm_property *property,
4146 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4149 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
4150 if (value < property->values[0] || value > property->values[1])
4153 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4154 int64_t svalue = U642I64(value);
4156 if (svalue < U642I64(property->values[0]) ||
4157 svalue > U642I64(property->values[1]))
4160 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4161 uint64_t valid_mask = 0;
4163 for (i = 0; i < property->num_values; i++)
4164 valid_mask |= (1ULL << property->values[i]);
4165 return !(value & ~valid_mask);
4166 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
4167 /* Only the driver knows */
4169 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4170 struct drm_mode_object *obj;
4172 /* a zero value for an object property translates to null: */
4176 * NOTE: use _object_find() directly to bypass restriction on
4177 * looking up refcnt'd objects (ie. fb's). For a refcnt'd
4178 * object this could race against object finalization, so it
4179 * simply tells us that the object *was* valid. Which is good
4182 obj = _object_find(property->dev, value, property->values[0]);
4186 for (i = 0; i < property->num_values; i++)
4187 if (property->values[i] == value)
4193 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4196 * @file_priv: DRM file info
4198 * This function sets the current value for a connectors's property. It also
4199 * calls into a driver's ->set_property callback to update the hardware state
4201 * Called by the user via ioctl.
4204 * Zero on success, negative errno on failure.
4206 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4207 void *data, struct drm_file *file_priv)
4209 struct drm_mode_connector_set_property *conn_set_prop = data;
4210 struct drm_mode_obj_set_property obj_set_prop = {
4211 .value = conn_set_prop->value,
4212 .prop_id = conn_set_prop->prop_id,
4213 .obj_id = conn_set_prop->connector_id,
4214 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4217 /* It does all the locking and checking we need */
4218 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
4221 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4222 struct drm_property *property,
4226 struct drm_connector *connector = obj_to_connector(obj);
4228 /* Do DPMS ourselves */
4229 if (property == connector->dev->mode_config.dpms_property) {
4230 if (connector->funcs->dpms)
4231 (*connector->funcs->dpms)(connector, (int)value);
4233 } else if (connector->funcs->set_property)
4234 ret = connector->funcs->set_property(connector, property, value);
4236 /* store the property value if successful */
4238 drm_object_property_set_value(&connector->base, property, value);
4242 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4243 struct drm_property *property,
4247 struct drm_crtc *crtc = obj_to_crtc(obj);
4249 if (crtc->funcs->set_property)
4250 ret = crtc->funcs->set_property(crtc, property, value);
4252 drm_object_property_set_value(obj, property, value);
4258 * drm_mode_plane_set_obj_prop - set the value of a property
4259 * @plane: drm plane object to set property value for
4260 * @property: property to set
4261 * @value: value the property should be set to
4263 * This functions sets a given property on a given plane object. This function
4264 * calls the driver's ->set_property callback and changes the software state of
4265 * the property if the callback succeeds.
4268 * Zero on success, error code on failure.
4270 int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4271 struct drm_property *property,
4275 struct drm_mode_object *obj = &plane->base;
4277 if (plane->funcs->set_property)
4278 ret = plane->funcs->set_property(plane, property, value);
4280 drm_object_property_set_value(obj, property, value);
4284 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4287 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4290 * @file_priv: DRM file info
4292 * This function retrieves the current value for an object's property. Compared
4293 * to the connector specific ioctl this one is extended to also work on crtc and
4296 * Called by the user via ioctl.
4299 * Zero on success, negative errno on failure.
4301 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4302 struct drm_file *file_priv)
4304 struct drm_mode_obj_get_properties *arg = data;
4305 struct drm_mode_object *obj;
4309 int props_count = 0;
4310 uint32_t __user *props_ptr;
4311 uint64_t __user *prop_values_ptr;
4313 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4316 drm_modeset_lock_all(dev);
4318 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4323 if (!obj->properties) {
4328 props_count = obj->properties->count;
4330 /* This ioctl is called twice, once to determine how much space is
4331 * needed, and the 2nd time to fill it. */
4332 if ((arg->count_props >= props_count) && props_count) {
4334 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
4335 prop_values_ptr = (uint64_t __user *)(unsigned long)
4336 (arg->prop_values_ptr);
4337 for (i = 0; i < props_count; i++) {
4338 if (put_user(obj->properties->ids[i],
4339 props_ptr + copied)) {
4343 if (put_user(obj->properties->values[i],
4344 prop_values_ptr + copied)) {
4351 arg->count_props = props_count;
4353 drm_modeset_unlock_all(dev);
4358 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4361 * @file_priv: DRM file info
4363 * This function sets the current value for an object's property. It also calls
4364 * into a driver's ->set_property callback to update the hardware state.
4365 * Compared to the connector specific ioctl this one is extended to also work on
4366 * crtc and plane objects.
4368 * Called by the user via ioctl.
4371 * Zero on success, negative errno on failure.
4373 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4374 struct drm_file *file_priv)
4376 struct drm_mode_obj_set_property *arg = data;
4377 struct drm_mode_object *arg_obj;
4378 struct drm_mode_object *prop_obj;
4379 struct drm_property *property;
4383 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4386 drm_modeset_lock_all(dev);
4388 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4393 if (!arg_obj->properties)
4396 for (i = 0; i < arg_obj->properties->count; i++)
4397 if (arg_obj->properties->ids[i] == arg->prop_id)
4400 if (i == arg_obj->properties->count)
4403 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4404 DRM_MODE_OBJECT_PROPERTY);
4409 property = obj_to_property(prop_obj);
4411 if (!drm_property_change_is_valid(property, arg->value))
4414 switch (arg_obj->type) {
4415 case DRM_MODE_OBJECT_CONNECTOR:
4416 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4419 case DRM_MODE_OBJECT_CRTC:
4420 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4422 case DRM_MODE_OBJECT_PLANE:
4423 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
4424 property, arg->value);
4429 drm_modeset_unlock_all(dev);
4434 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4435 * @connector: connector to attach
4436 * @encoder: encoder to attach @connector to
4438 * This function links up a connector to an encoder. Note that the routing
4439 * restrictions between encoders and crtcs are exposed to userspace through the
4440 * possible_clones and possible_crtcs bitmasks.
4443 * Zero on success, negative errno on failure.
4445 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4446 struct drm_encoder *encoder)
4450 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4451 if (connector->encoder_ids[i] == 0) {
4452 connector->encoder_ids[i] = encoder->base.id;
4458 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4461 * drm_mode_crtc_set_gamma_size - set the gamma table size
4462 * @crtc: CRTC to set the gamma table size for
4463 * @gamma_size: size of the gamma table
4465 * Drivers which support gamma tables should set this to the supported gamma
4466 * table size when initializing the CRTC. Currently the drm core only supports a
4467 * fixed gamma table size.
4470 * Zero on success, negative errno on failure.
4472 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
4475 crtc->gamma_size = gamma_size;
4477 crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
4479 if (!crtc->gamma_store) {
4480 crtc->gamma_size = 0;
4486 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
4489 * drm_mode_gamma_set_ioctl - set the gamma table
4492 * @file_priv: DRM file info
4494 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4495 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4497 * Called by the user via ioctl.
4500 * Zero on success, negative errno on failure.
4502 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
4503 void *data, struct drm_file *file_priv)
4505 struct drm_mode_crtc_lut *crtc_lut = data;
4506 struct drm_crtc *crtc;
4507 void *r_base, *g_base, *b_base;
4511 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4514 drm_modeset_lock_all(dev);
4515 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4521 if (crtc->funcs->gamma_set == NULL) {
4526 /* memcpy into gamma store */
4527 if (crtc_lut->gamma_size != crtc->gamma_size) {
4532 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4533 r_base = crtc->gamma_store;
4534 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4539 g_base = r_base + size;
4540 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4545 b_base = g_base + size;
4546 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4551 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
4554 drm_modeset_unlock_all(dev);
4560 * drm_mode_gamma_get_ioctl - get the gamma table
4563 * @file_priv: DRM file info
4565 * Copy the current gamma table into the storage provided. This also provides
4566 * the gamma table size the driver expects, which can be used to size the
4567 * allocated storage.
4569 * Called by the user via ioctl.
4572 * Zero on success, negative errno on failure.
4574 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4575 void *data, struct drm_file *file_priv)
4577 struct drm_mode_crtc_lut *crtc_lut = data;
4578 struct drm_crtc *crtc;
4579 void *r_base, *g_base, *b_base;
4583 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4586 drm_modeset_lock_all(dev);
4587 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4593 /* memcpy into gamma store */
4594 if (crtc_lut->gamma_size != crtc->gamma_size) {
4599 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4600 r_base = crtc->gamma_store;
4601 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4606 g_base = r_base + size;
4607 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4612 b_base = g_base + size;
4613 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4618 drm_modeset_unlock_all(dev);
4623 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4626 * @file_priv: DRM file info
4628 * This schedules an asynchronous update on a given CRTC, called page flip.
4629 * Optionally a drm event is generated to signal the completion of the event.
4630 * Generic drivers cannot assume that a pageflip with changed framebuffer
4631 * properties (including driver specific metadata like tiling layout) will work,
4632 * but some drivers support e.g. pixel format changes through the pageflip
4635 * Called by the user via ioctl.
4638 * Zero on success, negative errno on failure.
4640 int drm_mode_page_flip_ioctl(struct drm_device *dev,
4641 void *data, struct drm_file *file_priv)
4643 struct drm_mode_crtc_page_flip *page_flip = data;
4644 struct drm_crtc *crtc;
4645 struct drm_framebuffer *fb = NULL;
4646 struct drm_pending_vblank_event *e = NULL;
4647 unsigned long flags;
4650 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4651 page_flip->reserved != 0)
4654 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4657 crtc = drm_crtc_find(dev, page_flip->crtc_id);
4661 drm_modeset_lock_crtc(crtc, crtc->primary);
4662 if (crtc->primary->fb == NULL) {
4663 /* The framebuffer is currently unbound, presumably
4664 * due to a hotplug event, that userspace has not
4671 if (crtc->funcs->page_flip == NULL)
4674 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
4680 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4684 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
4685 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4690 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4692 spin_lock_irqsave(&dev->event_lock, flags);
4693 if (file_priv->event_space < sizeof(e->event)) {
4694 spin_unlock_irqrestore(&dev->event_lock, flags);
4697 file_priv->event_space -= sizeof(e->event);
4698 spin_unlock_irqrestore(&dev->event_lock, flags);
4700 e = kzalloc(sizeof(*e), GFP_KERNEL);
4702 spin_lock_irqsave(&dev->event_lock, flags);
4703 file_priv->event_space += sizeof(e->event);
4704 spin_unlock_irqrestore(&dev->event_lock, flags);
4708 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
4709 e->event.base.length = sizeof(e->event);
4710 e->event.user_data = page_flip->user_data;
4711 e->base.event = &e->event.base;
4712 e->base.file_priv = file_priv;
4714 (void (*) (struct drm_pending_event *)) kfree;
4717 crtc->primary->old_fb = crtc->primary->fb;
4718 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
4720 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4721 spin_lock_irqsave(&dev->event_lock, flags);
4722 file_priv->event_space += sizeof(e->event);
4723 spin_unlock_irqrestore(&dev->event_lock, flags);
4726 /* Keep the old fb, don't unref it. */
4727 crtc->primary->old_fb = NULL;
4730 * Warn if the driver hasn't properly updated the crtc->fb
4731 * field to reflect that the new framebuffer is now used.
4732 * Failing to do so will screw with the reference counting
4735 WARN_ON(crtc->primary->fb != fb);
4736 /* Unref only the old framebuffer. */
4742 drm_framebuffer_unreference(fb);
4743 if (crtc->primary->old_fb)
4744 drm_framebuffer_unreference(crtc->primary->old_fb);
4745 crtc->primary->old_fb = NULL;
4746 drm_modeset_unlock_crtc(crtc);
4752 * drm_mode_config_reset - call ->reset callbacks
4755 * This functions calls all the crtc's, encoder's and connector's ->reset
4756 * callback. Drivers can use this in e.g. their driver load or resume code to
4757 * reset hardware and software state.
4759 void drm_mode_config_reset(struct drm_device *dev)
4761 struct drm_crtc *crtc;
4762 struct drm_plane *plane;
4763 struct drm_encoder *encoder;
4764 struct drm_connector *connector;
4766 list_for_each_entry(plane, &dev->mode_config.plane_list, head)
4767 if (plane->funcs->reset)
4768 plane->funcs->reset(plane);
4770 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4771 if (crtc->funcs->reset)
4772 crtc->funcs->reset(crtc);
4774 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4775 if (encoder->funcs->reset)
4776 encoder->funcs->reset(encoder);
4778 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4779 connector->status = connector_status_unknown;
4781 if (connector->funcs->reset)
4782 connector->funcs->reset(connector);
4785 EXPORT_SYMBOL(drm_mode_config_reset);
4788 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4791 * @file_priv: DRM file info
4793 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4794 * TTM or something else entirely) and returns the resulting buffer handle. This
4795 * handle can then be wrapped up into a framebuffer modeset object.
4797 * Note that userspace is not allowed to use such objects for render
4798 * acceleration - drivers must create their own private ioctls for such a use
4801 * Called by the user via ioctl.
4804 * Zero on success, negative errno on failure.
4806 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
4807 void *data, struct drm_file *file_priv)
4809 struct drm_mode_create_dumb *args = data;
4810 u32 cpp, stride, size;
4812 if (!dev->driver->dumb_create)
4814 if (!args->width || !args->height || !args->bpp)
4817 /* overflow checks for 32bit size calculations */
4818 /* NOTE: DIV_ROUND_UP() can overflow */
4819 cpp = DIV_ROUND_UP(args->bpp, 8);
4820 if (!cpp || cpp > 0xffffffffU / args->width)
4822 stride = cpp * args->width;
4823 if (args->height > 0xffffffffU / stride)
4826 /* test for wrap-around */
4827 size = args->height * stride;
4828 if (PAGE_ALIGN(size) == 0)
4832 * handle, pitch and size are output parameters. Zero them out to
4833 * prevent drivers from accidentally using uninitialized data. Since
4834 * not all existing userspace is clearing these fields properly we
4835 * cannot reject IOCTL with garbage in them.
4841 return dev->driver->dumb_create(file_priv, dev, args);
4845 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4848 * @file_priv: DRM file info
4850 * Allocate an offset in the drm device node's address space to be able to
4851 * memory map a dumb buffer.
4853 * Called by the user via ioctl.
4856 * Zero on success, negative errno on failure.
4858 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
4859 void *data, struct drm_file *file_priv)
4861 struct drm_mode_map_dumb *args = data;
4863 /* call driver ioctl to get mmap offset */
4864 if (!dev->driver->dumb_map_offset)
4867 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
4871 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4874 * @file_priv: DRM file info
4876 * This destroys the userspace handle for the given dumb backing storage buffer.
4877 * Since buffer objects must be reference counted in the kernel a buffer object
4878 * won't be immediately freed if a framebuffer modeset object still uses it.
4880 * Called by the user via ioctl.
4883 * Zero on success, negative errno on failure.
4885 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
4886 void *data, struct drm_file *file_priv)
4888 struct drm_mode_destroy_dumb *args = data;
4890 if (!dev->driver->dumb_destroy)
4893 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
4897 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4898 * @format: pixel format (DRM_FORMAT_*)
4899 * @depth: storage for the depth value
4900 * @bpp: storage for the bpp value
4902 * This only supports RGB formats here for compat with code that doesn't use
4903 * pixel formats directly yet.
4905 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
4910 case DRM_FORMAT_RGB332:
4911 case DRM_FORMAT_BGR233:
4915 case DRM_FORMAT_XRGB1555:
4916 case DRM_FORMAT_XBGR1555:
4917 case DRM_FORMAT_RGBX5551:
4918 case DRM_FORMAT_BGRX5551:
4919 case DRM_FORMAT_ARGB1555:
4920 case DRM_FORMAT_ABGR1555:
4921 case DRM_FORMAT_RGBA5551:
4922 case DRM_FORMAT_BGRA5551:
4926 case DRM_FORMAT_RGB565:
4927 case DRM_FORMAT_BGR565:
4931 case DRM_FORMAT_RGB888:
4932 case DRM_FORMAT_BGR888:
4936 case DRM_FORMAT_XRGB8888:
4937 case DRM_FORMAT_XBGR8888:
4938 case DRM_FORMAT_RGBX8888:
4939 case DRM_FORMAT_BGRX8888:
4943 case DRM_FORMAT_XRGB2101010:
4944 case DRM_FORMAT_XBGR2101010:
4945 case DRM_FORMAT_RGBX1010102:
4946 case DRM_FORMAT_BGRX1010102:
4947 case DRM_FORMAT_ARGB2101010:
4948 case DRM_FORMAT_ABGR2101010:
4949 case DRM_FORMAT_RGBA1010102:
4950 case DRM_FORMAT_BGRA1010102:
4954 case DRM_FORMAT_ARGB8888:
4955 case DRM_FORMAT_ABGR8888:
4956 case DRM_FORMAT_RGBA8888:
4957 case DRM_FORMAT_BGRA8888:
4962 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4963 drm_get_format_name(format));
4969 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
4972 * drm_format_num_planes - get the number of planes for format
4973 * @format: pixel format (DRM_FORMAT_*)
4976 * The number of planes used by the specified pixel format.
4978 int drm_format_num_planes(uint32_t format)
4981 case DRM_FORMAT_YUV410:
4982 case DRM_FORMAT_YVU410:
4983 case DRM_FORMAT_YUV411:
4984 case DRM_FORMAT_YVU411:
4985 case DRM_FORMAT_YUV420:
4986 case DRM_FORMAT_YVU420:
4987 case DRM_FORMAT_YUV422:
4988 case DRM_FORMAT_YVU422:
4989 case DRM_FORMAT_YUV444:
4990 case DRM_FORMAT_YVU444:
4992 case DRM_FORMAT_NV12:
4993 case DRM_FORMAT_NV21:
4994 case DRM_FORMAT_NV16:
4995 case DRM_FORMAT_NV61:
4996 case DRM_FORMAT_NV24:
4997 case DRM_FORMAT_NV42:
5003 EXPORT_SYMBOL(drm_format_num_planes);
5006 * drm_format_plane_cpp - determine the bytes per pixel value
5007 * @format: pixel format (DRM_FORMAT_*)
5008 * @plane: plane index
5011 * The bytes per pixel value for the specified plane.
5013 int drm_format_plane_cpp(uint32_t format, int plane)
5018 if (plane >= drm_format_num_planes(format))
5022 case DRM_FORMAT_YUYV:
5023 case DRM_FORMAT_YVYU:
5024 case DRM_FORMAT_UYVY:
5025 case DRM_FORMAT_VYUY:
5027 case DRM_FORMAT_NV12:
5028 case DRM_FORMAT_NV21:
5029 case DRM_FORMAT_NV16:
5030 case DRM_FORMAT_NV61:
5031 case DRM_FORMAT_NV24:
5032 case DRM_FORMAT_NV42:
5033 return plane ? 2 : 1;
5034 case DRM_FORMAT_YUV410:
5035 case DRM_FORMAT_YVU410:
5036 case DRM_FORMAT_YUV411:
5037 case DRM_FORMAT_YVU411:
5038 case DRM_FORMAT_YUV420:
5039 case DRM_FORMAT_YVU420:
5040 case DRM_FORMAT_YUV422:
5041 case DRM_FORMAT_YVU422:
5042 case DRM_FORMAT_YUV444:
5043 case DRM_FORMAT_YVU444:
5046 drm_fb_get_bpp_depth(format, &depth, &bpp);
5050 EXPORT_SYMBOL(drm_format_plane_cpp);
5053 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5054 * @format: pixel format (DRM_FORMAT_*)
5057 * The horizontal chroma subsampling factor for the
5058 * specified pixel format.
5060 int drm_format_horz_chroma_subsampling(uint32_t format)
5063 case DRM_FORMAT_YUV411:
5064 case DRM_FORMAT_YVU411:
5065 case DRM_FORMAT_YUV410:
5066 case DRM_FORMAT_YVU410:
5068 case DRM_FORMAT_YUYV:
5069 case DRM_FORMAT_YVYU:
5070 case DRM_FORMAT_UYVY:
5071 case DRM_FORMAT_VYUY:
5072 case DRM_FORMAT_NV12:
5073 case DRM_FORMAT_NV21:
5074 case DRM_FORMAT_NV16:
5075 case DRM_FORMAT_NV61:
5076 case DRM_FORMAT_YUV422:
5077 case DRM_FORMAT_YVU422:
5078 case DRM_FORMAT_YUV420:
5079 case DRM_FORMAT_YVU420:
5085 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5088 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5089 * @format: pixel format (DRM_FORMAT_*)
5092 * The vertical chroma subsampling factor for the
5093 * specified pixel format.
5095 int drm_format_vert_chroma_subsampling(uint32_t format)
5098 case DRM_FORMAT_YUV410:
5099 case DRM_FORMAT_YVU410:
5101 case DRM_FORMAT_YUV420:
5102 case DRM_FORMAT_YVU420:
5103 case DRM_FORMAT_NV12:
5104 case DRM_FORMAT_NV21:
5110 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
5113 * drm_rotation_simplify() - Try to simplify the rotation
5114 * @rotation: Rotation to be simplified
5115 * @supported_rotations: Supported rotations
5117 * Attempt to simplify the rotation to a form that is supported.
5118 * Eg. if the hardware supports everything except DRM_REFLECT_X
5119 * one could call this function like this:
5121 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5122 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5123 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5125 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5126 * transforms the hardware supports, this function may not
5127 * be able to produce a supported transform, so the caller should
5128 * check the result afterwards.
5130 unsigned int drm_rotation_simplify(unsigned int rotation,
5131 unsigned int supported_rotations)
5133 if (rotation & ~supported_rotations) {
5134 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5135 rotation = (rotation & ~0xf) | BIT((ffs(rotation & 0xf) + 1) % 4);
5140 EXPORT_SYMBOL(drm_rotation_simplify);
5143 * drm_mode_config_init - initialize DRM mode_configuration structure
5146 * Initialize @dev's mode_config structure, used for tracking the graphics
5147 * configuration of @dev.
5149 * Since this initializes the modeset locks, no locking is possible. Which is no
5150 * problem, since this should happen single threaded at init time. It is the
5151 * driver's problem to ensure this guarantee.
5154 void drm_mode_config_init(struct drm_device *dev)
5156 mutex_init(&dev->mode_config.mutex);
5157 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
5158 mutex_init(&dev->mode_config.idr_mutex);
5159 mutex_init(&dev->mode_config.fb_lock);
5160 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5161 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5162 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5163 INIT_LIST_HEAD(&dev->mode_config.bridge_list);
5164 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5165 INIT_LIST_HEAD(&dev->mode_config.property_list);
5166 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5167 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5168 idr_init(&dev->mode_config.crtc_idr);
5170 drm_modeset_lock_all(dev);
5171 drm_mode_create_standard_connector_properties(dev);
5172 drm_mode_create_standard_plane_properties(dev);
5173 drm_modeset_unlock_all(dev);
5175 /* Just to be sure */
5176 dev->mode_config.num_fb = 0;
5177 dev->mode_config.num_connector = 0;
5178 dev->mode_config.num_crtc = 0;
5179 dev->mode_config.num_encoder = 0;
5180 dev->mode_config.num_overlay_plane = 0;
5181 dev->mode_config.num_total_plane = 0;
5183 EXPORT_SYMBOL(drm_mode_config_init);
5186 * drm_mode_config_cleanup - free up DRM mode_config info
5189 * Free up all the connectors and CRTCs associated with this DRM device, then
5190 * free up the framebuffers and associated buffer objects.
5192 * Note that since this /should/ happen single-threaded at driver/device
5193 * teardown time, no locking is required. It's the driver's job to ensure that
5194 * this guarantee actually holds true.
5196 * FIXME: cleanup any dangling user buffer objects too
5198 void drm_mode_config_cleanup(struct drm_device *dev)
5200 struct drm_connector *connector, *ot;
5201 struct drm_crtc *crtc, *ct;
5202 struct drm_encoder *encoder, *enct;
5203 struct drm_bridge *bridge, *brt;
5204 struct drm_framebuffer *fb, *fbt;
5205 struct drm_property *property, *pt;
5206 struct drm_property_blob *blob, *bt;
5207 struct drm_plane *plane, *plt;
5209 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5211 encoder->funcs->destroy(encoder);
5214 list_for_each_entry_safe(bridge, brt,
5215 &dev->mode_config.bridge_list, head) {
5216 bridge->funcs->destroy(bridge);
5219 list_for_each_entry_safe(connector, ot,
5220 &dev->mode_config.connector_list, head) {
5221 connector->funcs->destroy(connector);
5224 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5226 drm_property_destroy(dev, property);
5229 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5231 drm_property_destroy_blob(dev, blob);
5235 * Single-threaded teardown context, so it's not required to grab the
5236 * fb_lock to protect against concurrent fb_list access. Contrary, it
5237 * would actually deadlock with the drm_framebuffer_cleanup function.
5239 * Also, if there are any framebuffers left, that's a driver leak now,
5240 * so politely WARN about this.
5242 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5243 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5244 drm_framebuffer_remove(fb);
5247 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5249 plane->funcs->destroy(plane);
5252 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5253 crtc->funcs->destroy(crtc);
5256 idr_destroy(&dev->mode_config.crtc_idr);
5257 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
5259 EXPORT_SYMBOL(drm_mode_config_cleanup);
5261 struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5262 unsigned int supported_rotations)
5264 static const struct drm_prop_enum_list props[] = {
5265 { DRM_ROTATE_0, "rotate-0" },
5266 { DRM_ROTATE_90, "rotate-90" },
5267 { DRM_ROTATE_180, "rotate-180" },
5268 { DRM_ROTATE_270, "rotate-270" },
5269 { DRM_REFLECT_X, "reflect-x" },
5270 { DRM_REFLECT_Y, "reflect-y" },
5273 return drm_property_create_bitmask(dev, 0, "rotation",
5274 props, ARRAY_SIZE(props),
5275 supported_rotations);
5277 EXPORT_SYMBOL(drm_mode_create_rotation_property);