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 if (connector->tile_group) {
907 drm_mode_put_tile_group(dev, connector->tile_group);
908 connector->tile_group = NULL;
911 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
912 drm_mode_remove(connector, mode);
914 list_for_each_entry_safe(mode, t, &connector->modes, head)
915 drm_mode_remove(connector, mode);
917 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
918 connector->connector_type_id);
920 drm_mode_object_put(dev, &connector->base);
921 kfree(connector->name);
922 connector->name = NULL;
923 list_del(&connector->head);
924 dev->mode_config.num_connector--;
926 WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
927 if (connector->state && connector->funcs->atomic_destroy_state)
928 connector->funcs->atomic_destroy_state(connector,
931 memset(connector, 0, sizeof(*connector));
933 EXPORT_SYMBOL(drm_connector_cleanup);
936 * drm_connector_index - find the index of a registered connector
937 * @connector: connector to find index for
939 * Given a registered connector, return the index of that connector within a DRM
940 * device's list of connectors.
942 unsigned int drm_connector_index(struct drm_connector *connector)
944 unsigned int index = 0;
945 struct drm_connector *tmp;
946 struct drm_mode_config *config = &connector->dev->mode_config;
948 WARN_ON(!drm_modeset_is_locked(&config->connection_mutex));
950 list_for_each_entry(tmp, &connector->dev->mode_config.connector_list, head) {
951 if (tmp == connector)
959 EXPORT_SYMBOL(drm_connector_index);
962 * drm_connector_register - register a connector
963 * @connector: the connector to register
965 * Register userspace interfaces for a connector
968 * Zero on success, error code on failure.
970 int drm_connector_register(struct drm_connector *connector)
974 drm_mode_object_register(connector->dev, &connector->base);
976 ret = drm_sysfs_connector_add(connector);
980 ret = drm_debugfs_connector_add(connector);
982 drm_sysfs_connector_remove(connector);
988 EXPORT_SYMBOL(drm_connector_register);
991 * drm_connector_unregister - unregister a connector
992 * @connector: the connector to unregister
994 * Unregister userspace interfaces for a connector
996 void drm_connector_unregister(struct drm_connector *connector)
998 drm_sysfs_connector_remove(connector);
999 drm_debugfs_connector_remove(connector);
1001 EXPORT_SYMBOL(drm_connector_unregister);
1005 * drm_connector_unplug_all - unregister connector userspace interfaces
1008 * This function unregisters all connector userspace interfaces in sysfs. Should
1009 * be call when the device is disconnected, e.g. from an usb driver's
1010 * ->disconnect callback.
1012 void drm_connector_unplug_all(struct drm_device *dev)
1014 struct drm_connector *connector;
1016 /* taking the mode config mutex ends up in a clash with sysfs */
1017 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1018 drm_connector_unregister(connector);
1021 EXPORT_SYMBOL(drm_connector_unplug_all);
1024 * drm_bridge_init - initialize a drm transcoder/bridge
1026 * @bridge: transcoder/bridge to set up
1027 * @funcs: bridge function table
1029 * Initialises a preallocated bridge. Bridges should be
1030 * subclassed as part of driver connector objects.
1033 * Zero on success, error code on failure.
1035 int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
1036 const struct drm_bridge_funcs *funcs)
1040 drm_modeset_lock_all(dev);
1042 ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
1047 bridge->funcs = funcs;
1049 list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
1050 dev->mode_config.num_bridge++;
1053 drm_modeset_unlock_all(dev);
1056 EXPORT_SYMBOL(drm_bridge_init);
1059 * drm_bridge_cleanup - cleans up an initialised bridge
1060 * @bridge: bridge to cleanup
1062 * Cleans up the bridge but doesn't free the object.
1064 void drm_bridge_cleanup(struct drm_bridge *bridge)
1066 struct drm_device *dev = bridge->dev;
1068 drm_modeset_lock_all(dev);
1069 drm_mode_object_put(dev, &bridge->base);
1070 list_del(&bridge->head);
1071 dev->mode_config.num_bridge--;
1072 drm_modeset_unlock_all(dev);
1074 memset(bridge, 0, sizeof(*bridge));
1076 EXPORT_SYMBOL(drm_bridge_cleanup);
1079 * drm_encoder_init - Init a preallocated encoder
1081 * @encoder: the encoder to init
1082 * @funcs: callbacks for this encoder
1083 * @encoder_type: user visible type of the encoder
1085 * Initialises a preallocated encoder. Encoder should be
1086 * subclassed as part of driver encoder objects.
1089 * Zero on success, error code on failure.
1091 int drm_encoder_init(struct drm_device *dev,
1092 struct drm_encoder *encoder,
1093 const struct drm_encoder_funcs *funcs,
1098 drm_modeset_lock_all(dev);
1100 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
1105 encoder->encoder_type = encoder_type;
1106 encoder->funcs = funcs;
1107 encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
1108 drm_encoder_enum_list[encoder_type].name,
1110 if (!encoder->name) {
1115 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
1116 dev->mode_config.num_encoder++;
1120 drm_mode_object_put(dev, &encoder->base);
1123 drm_modeset_unlock_all(dev);
1127 EXPORT_SYMBOL(drm_encoder_init);
1130 * drm_encoder_cleanup - cleans up an initialised encoder
1131 * @encoder: encoder to cleanup
1133 * Cleans up the encoder but doesn't free the object.
1135 void drm_encoder_cleanup(struct drm_encoder *encoder)
1137 struct drm_device *dev = encoder->dev;
1139 drm_modeset_lock_all(dev);
1140 drm_mode_object_put(dev, &encoder->base);
1141 kfree(encoder->name);
1142 list_del(&encoder->head);
1143 dev->mode_config.num_encoder--;
1144 drm_modeset_unlock_all(dev);
1146 memset(encoder, 0, sizeof(*encoder));
1148 EXPORT_SYMBOL(drm_encoder_cleanup);
1151 * drm_universal_plane_init - Initialize a new universal plane object
1153 * @plane: plane object to init
1154 * @possible_crtcs: bitmask of possible CRTCs
1155 * @funcs: callbacks for the new plane
1156 * @formats: array of supported formats (%DRM_FORMAT_*)
1157 * @format_count: number of elements in @formats
1158 * @type: type of plane (overlay, primary, cursor)
1160 * Initializes a plane object of type @type.
1163 * Zero on success, error code on failure.
1165 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
1166 unsigned long possible_crtcs,
1167 const struct drm_plane_funcs *funcs,
1168 const uint32_t *formats, uint32_t format_count,
1169 enum drm_plane_type type)
1173 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1177 drm_modeset_lock_init(&plane->mutex);
1179 plane->base.properties = &plane->properties;
1181 plane->funcs = funcs;
1182 plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
1184 if (!plane->format_types) {
1185 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1186 drm_mode_object_put(dev, &plane->base);
1190 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
1191 plane->format_count = format_count;
1192 plane->possible_crtcs = possible_crtcs;
1195 list_add_tail(&plane->head, &dev->mode_config.plane_list);
1196 dev->mode_config.num_total_plane++;
1197 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1198 dev->mode_config.num_overlay_plane++;
1200 drm_object_attach_property(&plane->base,
1201 dev->mode_config.plane_type_property,
1206 EXPORT_SYMBOL(drm_universal_plane_init);
1209 * drm_plane_init - Initialize a legacy plane
1211 * @plane: plane object to init
1212 * @possible_crtcs: bitmask of possible CRTCs
1213 * @funcs: callbacks for the new plane
1214 * @formats: array of supported formats (%DRM_FORMAT_*)
1215 * @format_count: number of elements in @formats
1216 * @is_primary: plane type (primary vs overlay)
1218 * Legacy API to initialize a DRM plane.
1220 * New drivers should call drm_universal_plane_init() instead.
1223 * Zero on success, error code on failure.
1225 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1226 unsigned long possible_crtcs,
1227 const struct drm_plane_funcs *funcs,
1228 const uint32_t *formats, uint32_t format_count,
1231 enum drm_plane_type type;
1233 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
1234 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
1235 formats, format_count, type);
1237 EXPORT_SYMBOL(drm_plane_init);
1240 * drm_plane_cleanup - Clean up the core plane usage
1241 * @plane: plane to cleanup
1243 * This function cleans up @plane and removes it from the DRM mode setting
1244 * core. Note that the function does *not* free the plane structure itself,
1245 * this is the responsibility of the caller.
1247 void drm_plane_cleanup(struct drm_plane *plane)
1249 struct drm_device *dev = plane->dev;
1251 drm_modeset_lock_all(dev);
1252 kfree(plane->format_types);
1253 drm_mode_object_put(dev, &plane->base);
1255 BUG_ON(list_empty(&plane->head));
1257 list_del(&plane->head);
1258 dev->mode_config.num_total_plane--;
1259 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
1260 dev->mode_config.num_overlay_plane--;
1261 drm_modeset_unlock_all(dev);
1263 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
1264 if (plane->state && plane->funcs->atomic_destroy_state)
1265 plane->funcs->atomic_destroy_state(plane, plane->state);
1267 memset(plane, 0, sizeof(*plane));
1269 EXPORT_SYMBOL(drm_plane_cleanup);
1272 * drm_plane_index - find the index of a registered plane
1273 * @plane: plane to find index for
1275 * Given a registered plane, return the index of that CRTC within a DRM
1276 * device's list of planes.
1278 unsigned int drm_plane_index(struct drm_plane *plane)
1280 unsigned int index = 0;
1281 struct drm_plane *tmp;
1283 list_for_each_entry(tmp, &plane->dev->mode_config.plane_list, head) {
1292 EXPORT_SYMBOL(drm_plane_index);
1295 * drm_plane_force_disable - Forcibly disable a plane
1296 * @plane: plane to disable
1298 * Forces the plane to be disabled.
1300 * Used when the plane's current framebuffer is destroyed,
1301 * and when restoring fbdev mode.
1303 void drm_plane_force_disable(struct drm_plane *plane)
1310 plane->old_fb = plane->fb;
1311 ret = plane->funcs->disable_plane(plane);
1313 DRM_ERROR("failed to disable plane with busy fb\n");
1314 plane->old_fb = NULL;
1317 /* disconnect the plane from the fb and crtc: */
1318 __drm_framebuffer_unreference(plane->old_fb);
1319 plane->old_fb = NULL;
1323 EXPORT_SYMBOL(drm_plane_force_disable);
1325 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
1327 struct drm_property *edid;
1328 struct drm_property *dpms;
1329 struct drm_property *dev_path;
1332 * Standard properties (apply to all connectors)
1334 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1335 DRM_MODE_PROP_IMMUTABLE,
1337 dev->mode_config.edid_property = edid;
1339 dpms = drm_property_create_enum(dev, 0,
1340 "DPMS", drm_dpms_enum_list,
1341 ARRAY_SIZE(drm_dpms_enum_list));
1342 dev->mode_config.dpms_property = dpms;
1344 dev_path = drm_property_create(dev,
1345 DRM_MODE_PROP_BLOB |
1346 DRM_MODE_PROP_IMMUTABLE,
1348 dev->mode_config.path_property = dev_path;
1350 dev->mode_config.tile_property = drm_property_create(dev,
1351 DRM_MODE_PROP_BLOB |
1352 DRM_MODE_PROP_IMMUTABLE,
1358 static int drm_mode_create_standard_plane_properties(struct drm_device *dev)
1360 struct drm_property *type;
1363 * Standard properties (apply to all planes)
1365 type = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1366 "type", drm_plane_type_enum_list,
1367 ARRAY_SIZE(drm_plane_type_enum_list));
1368 dev->mode_config.plane_type_property = type;
1374 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1377 * Called by a driver the first time a DVI-I connector is made.
1379 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1381 struct drm_property *dvi_i_selector;
1382 struct drm_property *dvi_i_subconnector;
1384 if (dev->mode_config.dvi_i_select_subconnector_property)
1388 drm_property_create_enum(dev, 0,
1389 "select subconnector",
1390 drm_dvi_i_select_enum_list,
1391 ARRAY_SIZE(drm_dvi_i_select_enum_list));
1392 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1394 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1396 drm_dvi_i_subconnector_enum_list,
1397 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
1398 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1402 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1405 * drm_create_tv_properties - create TV specific connector properties
1407 * @num_modes: number of different TV formats (modes) supported
1408 * @modes: array of pointers to strings containing name of each format
1410 * Called by a driver's TV initialization routine, this function creates
1411 * the TV specific connector properties for a given device. Caller is
1412 * responsible for allocating a list of format names and passing them to
1415 int drm_mode_create_tv_properties(struct drm_device *dev,
1416 unsigned int num_modes,
1419 struct drm_property *tv_selector;
1420 struct drm_property *tv_subconnector;
1423 if (dev->mode_config.tv_select_subconnector_property)
1427 * Basic connector properties
1429 tv_selector = drm_property_create_enum(dev, 0,
1430 "select subconnector",
1431 drm_tv_select_enum_list,
1432 ARRAY_SIZE(drm_tv_select_enum_list));
1433 dev->mode_config.tv_select_subconnector_property = tv_selector;
1436 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1438 drm_tv_subconnector_enum_list,
1439 ARRAY_SIZE(drm_tv_subconnector_enum_list));
1440 dev->mode_config.tv_subconnector_property = tv_subconnector;
1443 * Other, TV specific properties: margins & TV modes.
1445 dev->mode_config.tv_left_margin_property =
1446 drm_property_create_range(dev, 0, "left margin", 0, 100);
1448 dev->mode_config.tv_right_margin_property =
1449 drm_property_create_range(dev, 0, "right margin", 0, 100);
1451 dev->mode_config.tv_top_margin_property =
1452 drm_property_create_range(dev, 0, "top margin", 0, 100);
1454 dev->mode_config.tv_bottom_margin_property =
1455 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
1457 dev->mode_config.tv_mode_property =
1458 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1460 for (i = 0; i < num_modes; i++)
1461 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1464 dev->mode_config.tv_brightness_property =
1465 drm_property_create_range(dev, 0, "brightness", 0, 100);
1467 dev->mode_config.tv_contrast_property =
1468 drm_property_create_range(dev, 0, "contrast", 0, 100);
1470 dev->mode_config.tv_flicker_reduction_property =
1471 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
1473 dev->mode_config.tv_overscan_property =
1474 drm_property_create_range(dev, 0, "overscan", 0, 100);
1476 dev->mode_config.tv_saturation_property =
1477 drm_property_create_range(dev, 0, "saturation", 0, 100);
1479 dev->mode_config.tv_hue_property =
1480 drm_property_create_range(dev, 0, "hue", 0, 100);
1484 EXPORT_SYMBOL(drm_mode_create_tv_properties);
1487 * drm_mode_create_scaling_mode_property - create scaling mode property
1490 * Called by a driver the first time it's needed, must be attached to desired
1493 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1495 struct drm_property *scaling_mode;
1497 if (dev->mode_config.scaling_mode_property)
1501 drm_property_create_enum(dev, 0, "scaling mode",
1502 drm_scaling_mode_enum_list,
1503 ARRAY_SIZE(drm_scaling_mode_enum_list));
1505 dev->mode_config.scaling_mode_property = scaling_mode;
1509 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1512 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1515 * Called by a driver the first time it's needed, must be attached to desired
1519 * Zero on success, negative errno on failure.
1521 int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
1523 if (dev->mode_config.aspect_ratio_property)
1526 dev->mode_config.aspect_ratio_property =
1527 drm_property_create_enum(dev, 0, "aspect ratio",
1528 drm_aspect_ratio_enum_list,
1529 ARRAY_SIZE(drm_aspect_ratio_enum_list));
1531 if (dev->mode_config.aspect_ratio_property == NULL)
1536 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
1539 * drm_mode_create_dirty_property - create dirty property
1542 * Called by a driver the first time it's needed, must be attached to desired
1545 int drm_mode_create_dirty_info_property(struct drm_device *dev)
1547 struct drm_property *dirty_info;
1549 if (dev->mode_config.dirty_info_property)
1553 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1555 drm_dirty_info_enum_list,
1556 ARRAY_SIZE(drm_dirty_info_enum_list));
1557 dev->mode_config.dirty_info_property = dirty_info;
1561 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1564 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1567 * Create the the suggested x/y offset property for connectors.
1569 int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
1571 if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
1574 dev->mode_config.suggested_x_property =
1575 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
1577 dev->mode_config.suggested_y_property =
1578 drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
1580 if (dev->mode_config.suggested_x_property == NULL ||
1581 dev->mode_config.suggested_y_property == NULL)
1585 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
1587 static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
1589 uint32_t total_objects = 0;
1591 total_objects += dev->mode_config.num_crtc;
1592 total_objects += dev->mode_config.num_connector;
1593 total_objects += dev->mode_config.num_encoder;
1594 total_objects += dev->mode_config.num_bridge;
1596 group->id_list = kcalloc(total_objects, sizeof(uint32_t), GFP_KERNEL);
1597 if (!group->id_list)
1600 group->num_crtcs = 0;
1601 group->num_connectors = 0;
1602 group->num_encoders = 0;
1603 group->num_bridges = 0;
1607 void drm_mode_group_destroy(struct drm_mode_group *group)
1609 kfree(group->id_list);
1610 group->id_list = NULL;
1614 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1615 * the drm core's responsibility to set up mode control groups.
1617 int drm_mode_group_init_legacy_group(struct drm_device *dev,
1618 struct drm_mode_group *group)
1620 struct drm_crtc *crtc;
1621 struct drm_encoder *encoder;
1622 struct drm_connector *connector;
1623 struct drm_bridge *bridge;
1626 ret = drm_mode_group_init(dev, group);
1630 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1631 group->id_list[group->num_crtcs++] = crtc->base.id;
1633 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1634 group->id_list[group->num_crtcs + group->num_encoders++] =
1637 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1638 group->id_list[group->num_crtcs + group->num_encoders +
1639 group->num_connectors++] = connector->base.id;
1641 list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
1642 group->id_list[group->num_crtcs + group->num_encoders +
1643 group->num_connectors + group->num_bridges++] =
1648 EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
1650 void drm_reinit_primary_mode_group(struct drm_device *dev)
1652 drm_modeset_lock_all(dev);
1653 drm_mode_group_destroy(&dev->primary->mode_group);
1654 drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
1655 drm_modeset_unlock_all(dev);
1657 EXPORT_SYMBOL(drm_reinit_primary_mode_group);
1660 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1661 * @out: drm_mode_modeinfo struct to return to the user
1662 * @in: drm_display_mode to use
1664 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1667 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1668 const struct drm_display_mode *in)
1670 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1671 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1672 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1673 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1674 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1675 "timing values too large for mode info\n");
1677 out->clock = in->clock;
1678 out->hdisplay = in->hdisplay;
1679 out->hsync_start = in->hsync_start;
1680 out->hsync_end = in->hsync_end;
1681 out->htotal = in->htotal;
1682 out->hskew = in->hskew;
1683 out->vdisplay = in->vdisplay;
1684 out->vsync_start = in->vsync_start;
1685 out->vsync_end = in->vsync_end;
1686 out->vtotal = in->vtotal;
1687 out->vscan = in->vscan;
1688 out->vrefresh = in->vrefresh;
1689 out->flags = in->flags;
1690 out->type = in->type;
1691 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1692 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1696 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
1697 * @out: drm_display_mode to return to the user
1698 * @in: drm_mode_modeinfo to use
1700 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1704 * Zero on success, negative errno on failure.
1706 static int drm_crtc_convert_umode(struct drm_display_mode *out,
1707 const struct drm_mode_modeinfo *in)
1709 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1712 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1715 out->clock = in->clock;
1716 out->hdisplay = in->hdisplay;
1717 out->hsync_start = in->hsync_start;
1718 out->hsync_end = in->hsync_end;
1719 out->htotal = in->htotal;
1720 out->hskew = in->hskew;
1721 out->vdisplay = in->vdisplay;
1722 out->vsync_start = in->vsync_start;
1723 out->vsync_end = in->vsync_end;
1724 out->vtotal = in->vtotal;
1725 out->vscan = in->vscan;
1726 out->vrefresh = in->vrefresh;
1727 out->flags = in->flags;
1728 out->type = in->type;
1729 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1730 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1736 * drm_mode_getresources - get graphics configuration
1737 * @dev: drm device for the ioctl
1738 * @data: data pointer for the ioctl
1739 * @file_priv: drm file for the ioctl call
1741 * Construct a set of configuration description structures and return
1742 * them to the user, including CRTC, connector and framebuffer configuration.
1744 * Called by the user via ioctl.
1747 * Zero on success, negative errno on failure.
1749 int drm_mode_getresources(struct drm_device *dev, void *data,
1750 struct drm_file *file_priv)
1752 struct drm_mode_card_res *card_res = data;
1753 struct list_head *lh;
1754 struct drm_framebuffer *fb;
1755 struct drm_connector *connector;
1756 struct drm_crtc *crtc;
1757 struct drm_encoder *encoder;
1759 int connector_count = 0;
1762 int encoder_count = 0;
1764 uint32_t __user *fb_id;
1765 uint32_t __user *crtc_id;
1766 uint32_t __user *connector_id;
1767 uint32_t __user *encoder_id;
1768 struct drm_mode_group *mode_group;
1770 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1774 mutex_lock(&file_priv->fbs_lock);
1776 * For the non-control nodes we need to limit the list of resources
1777 * by IDs in the group list for this node
1779 list_for_each(lh, &file_priv->fbs)
1782 /* handle this in 4 parts */
1784 if (card_res->count_fbs >= fb_count) {
1786 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1787 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1788 if (put_user(fb->base.id, fb_id + copied)) {
1789 mutex_unlock(&file_priv->fbs_lock);
1795 card_res->count_fbs = fb_count;
1796 mutex_unlock(&file_priv->fbs_lock);
1798 /* mode_config.mutex protects the connector list against e.g. DP MST
1799 * connector hot-adding. CRTC/Plane lists are invariant. */
1800 mutex_lock(&dev->mode_config.mutex);
1801 if (!drm_is_primary_client(file_priv)) {
1804 list_for_each(lh, &dev->mode_config.crtc_list)
1807 list_for_each(lh, &dev->mode_config.connector_list)
1810 list_for_each(lh, &dev->mode_config.encoder_list)
1814 mode_group = &file_priv->master->minor->mode_group;
1815 crtc_count = mode_group->num_crtcs;
1816 connector_count = mode_group->num_connectors;
1817 encoder_count = mode_group->num_encoders;
1820 card_res->max_height = dev->mode_config.max_height;
1821 card_res->min_height = dev->mode_config.min_height;
1822 card_res->max_width = dev->mode_config.max_width;
1823 card_res->min_width = dev->mode_config.min_width;
1826 if (card_res->count_crtcs >= crtc_count) {
1828 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1830 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1832 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1833 if (put_user(crtc->base.id, crtc_id + copied)) {
1840 for (i = 0; i < mode_group->num_crtcs; i++) {
1841 if (put_user(mode_group->id_list[i],
1842 crtc_id + copied)) {
1850 card_res->count_crtcs = crtc_count;
1853 if (card_res->count_encoders >= encoder_count) {
1855 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1857 list_for_each_entry(encoder,
1858 &dev->mode_config.encoder_list,
1860 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1862 if (put_user(encoder->base.id, encoder_id +
1870 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1871 if (put_user(mode_group->id_list[i],
1872 encoder_id + copied)) {
1881 card_res->count_encoders = encoder_count;
1884 if (card_res->count_connectors >= connector_count) {
1886 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1888 list_for_each_entry(connector,
1889 &dev->mode_config.connector_list,
1891 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1894 if (put_user(connector->base.id,
1895 connector_id + copied)) {
1902 int start = mode_group->num_crtcs +
1903 mode_group->num_encoders;
1904 for (i = start; i < start + mode_group->num_connectors; i++) {
1905 if (put_user(mode_group->id_list[i],
1906 connector_id + copied)) {
1914 card_res->count_connectors = connector_count;
1916 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1917 card_res->count_connectors, card_res->count_encoders);
1920 mutex_unlock(&dev->mode_config.mutex);
1925 * drm_mode_getcrtc - get CRTC configuration
1926 * @dev: drm device for the ioctl
1927 * @data: data pointer for the ioctl
1928 * @file_priv: drm file for the ioctl call
1930 * Construct a CRTC configuration structure to return to the user.
1932 * Called by the user via ioctl.
1935 * Zero on success, negative errno on failure.
1937 int drm_mode_getcrtc(struct drm_device *dev,
1938 void *data, struct drm_file *file_priv)
1940 struct drm_mode_crtc *crtc_resp = data;
1941 struct drm_crtc *crtc;
1943 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1946 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
1950 drm_modeset_lock_crtc(crtc, crtc->primary);
1951 crtc_resp->x = crtc->x;
1952 crtc_resp->y = crtc->y;
1953 crtc_resp->gamma_size = crtc->gamma_size;
1954 if (crtc->primary->fb)
1955 crtc_resp->fb_id = crtc->primary->fb->base.id;
1957 crtc_resp->fb_id = 0;
1959 if (crtc->enabled) {
1961 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1962 crtc_resp->mode_valid = 1;
1965 crtc_resp->mode_valid = 0;
1967 drm_modeset_unlock_crtc(crtc);
1972 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1973 const struct drm_file *file_priv)
1976 * If user-space hasn't configured the driver to expose the stereo 3D
1977 * modes, don't expose them.
1979 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1985 static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
1987 /* For atomic drivers only state objects are synchronously updated and
1988 * protected by modeset locks, so check those first. */
1989 if (connector->state)
1990 return connector->state->best_encoder;
1991 return connector->encoder;
1995 * drm_mode_getconnector - get connector configuration
1996 * @dev: drm device for the ioctl
1997 * @data: data pointer for the ioctl
1998 * @file_priv: drm file for the ioctl call
2000 * Construct a connector configuration structure to return to the user.
2002 * Called by the user via ioctl.
2005 * Zero on success, negative errno on failure.
2007 int drm_mode_getconnector(struct drm_device *dev, void *data,
2008 struct drm_file *file_priv)
2010 struct drm_mode_get_connector *out_resp = data;
2011 struct drm_connector *connector;
2012 struct drm_encoder *encoder;
2013 struct drm_display_mode *mode;
2015 int props_count = 0;
2016 int encoders_count = 0;
2020 struct drm_mode_modeinfo u_mode;
2021 struct drm_mode_modeinfo __user *mode_ptr;
2022 uint32_t __user *prop_ptr;
2023 uint64_t __user *prop_values;
2024 uint32_t __user *encoder_ptr;
2026 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2029 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
2031 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
2033 mutex_lock(&dev->mode_config.mutex);
2035 connector = drm_connector_find(dev, out_resp->connector_id);
2041 props_count = connector->properties.count;
2043 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
2044 if (connector->encoder_ids[i] != 0)
2047 if (out_resp->count_modes == 0) {
2048 connector->funcs->fill_modes(connector,
2049 dev->mode_config.max_width,
2050 dev->mode_config.max_height);
2053 /* delayed so we get modes regardless of pre-fill_modes state */
2054 list_for_each_entry(mode, &connector->modes, head)
2055 if (drm_mode_expose_to_userspace(mode, file_priv))
2058 out_resp->connector_id = connector->base.id;
2059 out_resp->connector_type = connector->connector_type;
2060 out_resp->connector_type_id = connector->connector_type_id;
2061 out_resp->mm_width = connector->display_info.width_mm;
2062 out_resp->mm_height = connector->display_info.height_mm;
2063 out_resp->subpixel = connector->display_info.subpixel_order;
2064 out_resp->connection = connector->status;
2065 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2067 encoder = drm_connector_get_encoder(connector);
2069 out_resp->encoder_id = encoder->base.id;
2071 out_resp->encoder_id = 0;
2072 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2075 * This ioctl is called twice, once to determine how much space is
2076 * needed, and the 2nd time to fill it.
2078 if ((out_resp->count_modes >= mode_count) && mode_count) {
2080 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
2081 list_for_each_entry(mode, &connector->modes, head) {
2082 if (!drm_mode_expose_to_userspace(mode, file_priv))
2085 drm_crtc_convert_to_umode(&u_mode, mode);
2086 if (copy_to_user(mode_ptr + copied,
2087 &u_mode, sizeof(u_mode))) {
2094 out_resp->count_modes = mode_count;
2096 if ((out_resp->count_props >= props_count) && props_count) {
2098 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
2099 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
2100 for (i = 0; i < connector->properties.count; i++) {
2101 struct drm_property *prop = connector->properties.properties[i];
2104 ret = drm_object_property_get_value(&connector->base, prop, &val);
2108 if (put_user(prop->base.id, prop_ptr + copied)) {
2112 if (put_user(val, prop_values + copied)) {
2119 out_resp->count_props = props_count;
2121 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
2123 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
2124 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2125 if (connector->encoder_ids[i] != 0) {
2126 if (put_user(connector->encoder_ids[i],
2127 encoder_ptr + copied)) {
2135 out_resp->count_encoders = encoders_count;
2138 mutex_unlock(&dev->mode_config.mutex);
2143 static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
2145 struct drm_connector *connector;
2146 struct drm_device *dev = encoder->dev;
2147 bool uses_atomic = false;
2149 /* For atomic drivers only state objects are synchronously updated and
2150 * protected by modeset locks, so check those first. */
2151 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2152 if (!connector->state)
2157 if (connector->state->best_encoder != encoder)
2160 return connector->state->crtc;
2163 /* Don't return stale data (e.g. pending async disable). */
2167 return encoder->crtc;
2171 * drm_mode_getencoder - get encoder configuration
2172 * @dev: drm device for the ioctl
2173 * @data: data pointer for the ioctl
2174 * @file_priv: drm file for the ioctl call
2176 * Construct a encoder configuration structure to return to the user.
2178 * Called by the user via ioctl.
2181 * Zero on success, negative errno on failure.
2183 int drm_mode_getencoder(struct drm_device *dev, void *data,
2184 struct drm_file *file_priv)
2186 struct drm_mode_get_encoder *enc_resp = data;
2187 struct drm_encoder *encoder;
2188 struct drm_crtc *crtc;
2190 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2193 encoder = drm_encoder_find(dev, enc_resp->encoder_id);
2197 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
2198 crtc = drm_encoder_get_crtc(encoder);
2200 enc_resp->crtc_id = crtc->base.id;
2201 else if (encoder->crtc)
2202 enc_resp->crtc_id = encoder->crtc->base.id;
2204 enc_resp->crtc_id = 0;
2205 drm_modeset_unlock(&dev->mode_config.connection_mutex);
2207 enc_resp->encoder_type = encoder->encoder_type;
2208 enc_resp->encoder_id = encoder->base.id;
2209 enc_resp->possible_crtcs = encoder->possible_crtcs;
2210 enc_resp->possible_clones = encoder->possible_clones;
2216 * drm_mode_getplane_res - enumerate all plane resources
2219 * @file_priv: DRM file info
2221 * Construct a list of plane ids to return to the user.
2223 * Called by the user via ioctl.
2226 * Zero on success, negative errno on failure.
2228 int drm_mode_getplane_res(struct drm_device *dev, void *data,
2229 struct drm_file *file_priv)
2231 struct drm_mode_get_plane_res *plane_resp = data;
2232 struct drm_mode_config *config;
2233 struct drm_plane *plane;
2234 uint32_t __user *plane_ptr;
2236 unsigned num_planes;
2238 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2241 config = &dev->mode_config;
2243 if (file_priv->universal_planes)
2244 num_planes = config->num_total_plane;
2246 num_planes = config->num_overlay_plane;
2249 * This ioctl is called twice, once to determine how much space is
2250 * needed, and the 2nd time to fill it.
2253 (plane_resp->count_planes >= num_planes)) {
2254 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
2256 /* Plane lists are invariant, no locking needed. */
2257 list_for_each_entry(plane, &config->plane_list, head) {
2259 * Unless userspace set the 'universal planes'
2260 * capability bit, only advertise overlays.
2262 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
2263 !file_priv->universal_planes)
2266 if (put_user(plane->base.id, plane_ptr + copied))
2271 plane_resp->count_planes = num_planes;
2277 * drm_mode_getplane - get plane configuration
2280 * @file_priv: DRM file info
2282 * Construct a plane configuration structure to return to the user.
2284 * Called by the user via ioctl.
2287 * Zero on success, negative errno on failure.
2289 int drm_mode_getplane(struct drm_device *dev, void *data,
2290 struct drm_file *file_priv)
2292 struct drm_mode_get_plane *plane_resp = data;
2293 struct drm_plane *plane;
2294 uint32_t __user *format_ptr;
2296 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2299 plane = drm_plane_find(dev, plane_resp->plane_id);
2303 drm_modeset_lock(&plane->mutex, NULL);
2305 plane_resp->crtc_id = plane->crtc->base.id;
2307 plane_resp->crtc_id = 0;
2310 plane_resp->fb_id = plane->fb->base.id;
2312 plane_resp->fb_id = 0;
2313 drm_modeset_unlock(&plane->mutex);
2315 plane_resp->plane_id = plane->base.id;
2316 plane_resp->possible_crtcs = plane->possible_crtcs;
2317 plane_resp->gamma_size = 0;
2320 * This ioctl is called twice, once to determine how much space is
2321 * needed, and the 2nd time to fill it.
2323 if (plane->format_count &&
2324 (plane_resp->count_format_types >= plane->format_count)) {
2325 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
2326 if (copy_to_user(format_ptr,
2327 plane->format_types,
2328 sizeof(uint32_t) * plane->format_count)) {
2332 plane_resp->count_format_types = plane->format_count;
2338 * setplane_internal - setplane handler for internal callers
2340 * Note that we assume an extra reference has already been taken on fb. If the
2341 * update fails, this reference will be dropped before return; if it succeeds,
2342 * the previous framebuffer (if any) will be unreferenced instead.
2344 * src_{x,y,w,h} are provided in 16.16 fixed point format
2346 static int __setplane_internal(struct drm_plane *plane,
2347 struct drm_crtc *crtc,
2348 struct drm_framebuffer *fb,
2349 int32_t crtc_x, int32_t crtc_y,
2350 uint32_t crtc_w, uint32_t crtc_h,
2351 /* src_{x,y,w,h} values are 16.16 fixed point */
2352 uint32_t src_x, uint32_t src_y,
2353 uint32_t src_w, uint32_t src_h)
2356 unsigned int fb_width, fb_height;
2359 /* No fb means shut it down */
2361 plane->old_fb = plane->fb;
2362 ret = plane->funcs->disable_plane(plane);
2367 plane->old_fb = NULL;
2372 /* Check whether this plane is usable on this CRTC */
2373 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
2374 DRM_DEBUG_KMS("Invalid crtc for plane\n");
2379 /* Check whether this plane supports the fb pixel format. */
2380 for (i = 0; i < plane->format_count; i++)
2381 if (fb->pixel_format == plane->format_types[i])
2383 if (i == plane->format_count) {
2384 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2385 drm_get_format_name(fb->pixel_format));
2390 fb_width = fb->width << 16;
2391 fb_height = fb->height << 16;
2393 /* Make sure source coordinates are inside the fb. */
2394 if (src_w > fb_width ||
2395 src_x > fb_width - src_w ||
2396 src_h > fb_height ||
2397 src_y > fb_height - src_h) {
2398 DRM_DEBUG_KMS("Invalid source coordinates "
2399 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2400 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
2401 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
2402 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
2403 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
2408 plane->old_fb = plane->fb;
2409 ret = plane->funcs->update_plane(plane, crtc, fb,
2410 crtc_x, crtc_y, crtc_w, crtc_h,
2411 src_x, src_y, src_w, src_h);
2417 plane->old_fb = NULL;
2422 drm_framebuffer_unreference(fb);
2424 drm_framebuffer_unreference(plane->old_fb);
2425 plane->old_fb = NULL;
2430 static int setplane_internal(struct drm_plane *plane,
2431 struct drm_crtc *crtc,
2432 struct drm_framebuffer *fb,
2433 int32_t crtc_x, int32_t crtc_y,
2434 uint32_t crtc_w, uint32_t crtc_h,
2435 /* src_{x,y,w,h} values are 16.16 fixed point */
2436 uint32_t src_x, uint32_t src_y,
2437 uint32_t src_w, uint32_t src_h)
2441 drm_modeset_lock_all(plane->dev);
2442 ret = __setplane_internal(plane, crtc, fb,
2443 crtc_x, crtc_y, crtc_w, crtc_h,
2444 src_x, src_y, src_w, src_h);
2445 drm_modeset_unlock_all(plane->dev);
2451 * drm_mode_setplane - configure a plane's configuration
2453 * @data: ioctl data*
2454 * @file_priv: DRM file info
2456 * Set plane configuration, including placement, fb, scaling, and other factors.
2457 * Or pass a NULL fb to disable (planes may be disabled without providing a
2461 * Zero on success, negative errno on failure.
2463 int drm_mode_setplane(struct drm_device *dev, void *data,
2464 struct drm_file *file_priv)
2466 struct drm_mode_set_plane *plane_req = data;
2467 struct drm_plane *plane;
2468 struct drm_crtc *crtc = NULL;
2469 struct drm_framebuffer *fb = NULL;
2471 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2474 /* Give drivers some help against integer overflows */
2475 if (plane_req->crtc_w > INT_MAX ||
2476 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2477 plane_req->crtc_h > INT_MAX ||
2478 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2479 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2480 plane_req->crtc_w, plane_req->crtc_h,
2481 plane_req->crtc_x, plane_req->crtc_y);
2486 * First, find the plane, crtc, and fb objects. If not available,
2487 * we don't bother to call the driver.
2489 plane = drm_plane_find(dev, plane_req->plane_id);
2491 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2492 plane_req->plane_id);
2496 if (plane_req->fb_id) {
2497 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2499 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2504 crtc = drm_crtc_find(dev, plane_req->crtc_id);
2506 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2507 plane_req->crtc_id);
2513 * setplane_internal will take care of deref'ing either the old or new
2514 * framebuffer depending on success.
2516 return setplane_internal(plane, crtc, fb,
2517 plane_req->crtc_x, plane_req->crtc_y,
2518 plane_req->crtc_w, plane_req->crtc_h,
2519 plane_req->src_x, plane_req->src_y,
2520 plane_req->src_w, plane_req->src_h);
2524 * drm_mode_set_config_internal - helper to call ->set_config
2525 * @set: modeset config to set
2527 * This is a little helper to wrap internal calls to the ->set_config driver
2528 * interface. The only thing it adds is correct refcounting dance.
2531 * Zero on success, negative errno on failure.
2533 int drm_mode_set_config_internal(struct drm_mode_set *set)
2535 struct drm_crtc *crtc = set->crtc;
2536 struct drm_framebuffer *fb;
2537 struct drm_crtc *tmp;
2541 * NOTE: ->set_config can also disable other crtcs (if we steal all
2542 * connectors from it), hence we need to refcount the fbs across all
2543 * crtcs. Atomic modeset will have saner semantics ...
2545 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
2546 tmp->primary->old_fb = tmp->primary->fb;
2550 ret = crtc->funcs->set_config(set);
2552 crtc->primary->crtc = crtc;
2553 crtc->primary->fb = fb;
2556 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
2557 if (tmp->primary->fb)
2558 drm_framebuffer_reference(tmp->primary->fb);
2559 if (tmp->primary->old_fb)
2560 drm_framebuffer_unreference(tmp->primary->old_fb);
2561 tmp->primary->old_fb = NULL;
2566 EXPORT_SYMBOL(drm_mode_set_config_internal);
2569 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
2571 * @crtc: CRTC that framebuffer will be displayed on
2574 * @mode: mode that framebuffer will be displayed under
2575 * @fb: framebuffer to check size of
2577 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2579 const struct drm_display_mode *mode,
2580 const struct drm_framebuffer *fb)
2583 int hdisplay, vdisplay;
2585 hdisplay = mode->hdisplay;
2586 vdisplay = mode->vdisplay;
2588 if (drm_mode_is_stereo(mode)) {
2589 struct drm_display_mode adjusted = *mode;
2591 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE);
2592 hdisplay = adjusted.crtc_hdisplay;
2593 vdisplay = adjusted.crtc_vdisplay;
2596 if (crtc->invert_dimensions)
2597 swap(hdisplay, vdisplay);
2599 if (hdisplay > fb->width ||
2600 vdisplay > fb->height ||
2601 x > fb->width - hdisplay ||
2602 y > fb->height - vdisplay) {
2603 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2604 fb->width, fb->height, hdisplay, vdisplay, x, y,
2605 crtc->invert_dimensions ? " (inverted)" : "");
2611 EXPORT_SYMBOL(drm_crtc_check_viewport);
2614 * drm_mode_setcrtc - set CRTC configuration
2615 * @dev: drm device for the ioctl
2616 * @data: data pointer for the ioctl
2617 * @file_priv: drm file for the ioctl call
2619 * Build a new CRTC configuration based on user request.
2621 * Called by the user via ioctl.
2624 * Zero on success, negative errno on failure.
2626 int drm_mode_setcrtc(struct drm_device *dev, void *data,
2627 struct drm_file *file_priv)
2629 struct drm_mode_config *config = &dev->mode_config;
2630 struct drm_mode_crtc *crtc_req = data;
2631 struct drm_crtc *crtc;
2632 struct drm_connector **connector_set = NULL, *connector;
2633 struct drm_framebuffer *fb = NULL;
2634 struct drm_display_mode *mode = NULL;
2635 struct drm_mode_set set;
2636 uint32_t __user *set_connectors_ptr;
2640 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2643 /* For some reason crtc x/y offsets are signed internally. */
2644 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2647 drm_modeset_lock_all(dev);
2648 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
2650 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
2654 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
2656 if (crtc_req->mode_valid) {
2657 /* If we have a mode we need a framebuffer. */
2658 /* If we pass -1, set the mode with the currently bound fb */
2659 if (crtc_req->fb_id == -1) {
2660 if (!crtc->primary->fb) {
2661 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2665 fb = crtc->primary->fb;
2666 /* Make refcounting symmetric with the lookup path. */
2667 drm_framebuffer_reference(fb);
2669 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2671 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2678 mode = drm_mode_create(dev);
2684 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2686 DRM_DEBUG_KMS("Invalid mode\n");
2690 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
2692 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2699 if (crtc_req->count_connectors == 0 && mode) {
2700 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
2705 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
2706 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
2707 crtc_req->count_connectors);
2712 if (crtc_req->count_connectors > 0) {
2715 /* Avoid unbounded kernel memory allocation */
2716 if (crtc_req->count_connectors > config->num_connector) {
2721 connector_set = kmalloc_array(crtc_req->count_connectors,
2722 sizeof(struct drm_connector *),
2724 if (!connector_set) {
2729 for (i = 0; i < crtc_req->count_connectors; i++) {
2730 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2731 if (get_user(out_id, &set_connectors_ptr[i])) {
2736 connector = drm_connector_find(dev, out_id);
2738 DRM_DEBUG_KMS("Connector id %d unknown\n",
2743 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2747 connector_set[i] = connector;
2752 set.x = crtc_req->x;
2753 set.y = crtc_req->y;
2755 set.connectors = connector_set;
2756 set.num_connectors = crtc_req->count_connectors;
2758 ret = drm_mode_set_config_internal(&set);
2762 drm_framebuffer_unreference(fb);
2764 kfree(connector_set);
2765 drm_mode_destroy(dev, mode);
2766 drm_modeset_unlock_all(dev);
2771 * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
2772 * universal plane handler call
2773 * @crtc: crtc to update cursor for
2774 * @req: data pointer for the ioctl
2775 * @file_priv: drm file for the ioctl call
2777 * Legacy cursor ioctl's work directly with driver buffer handles. To
2778 * translate legacy ioctl calls into universal plane handler calls, we need to
2779 * wrap the native buffer handle in a drm_framebuffer.
2781 * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
2782 * buffer with a pitch of 4*width; the universal plane interface should be used
2783 * directly in cases where the hardware can support other buffer settings and
2784 * userspace wants to make use of these capabilities.
2787 * Zero on success, negative errno on failure.
2789 static int drm_mode_cursor_universal(struct drm_crtc *crtc,
2790 struct drm_mode_cursor2 *req,
2791 struct drm_file *file_priv)
2793 struct drm_device *dev = crtc->dev;
2794 struct drm_framebuffer *fb = NULL;
2795 struct drm_mode_fb_cmd2 fbreq = {
2796 .width = req->width,
2797 .height = req->height,
2798 .pixel_format = DRM_FORMAT_ARGB8888,
2799 .pitches = { req->width * 4 },
2800 .handles = { req->handle },
2802 int32_t crtc_x, crtc_y;
2803 uint32_t crtc_w = 0, crtc_h = 0;
2804 uint32_t src_w = 0, src_h = 0;
2807 BUG_ON(!crtc->cursor);
2808 WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
2811 * Obtain fb we'll be using (either new or existing) and take an extra
2812 * reference to it if fb != null. setplane will take care of dropping
2813 * the reference if the plane update fails.
2815 if (req->flags & DRM_MODE_CURSOR_BO) {
2817 fb = add_framebuffer_internal(dev, &fbreq, file_priv);
2819 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
2823 drm_framebuffer_reference(fb);
2828 fb = crtc->cursor->fb;
2830 drm_framebuffer_reference(fb);
2833 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2837 crtc_x = crtc->cursor_x;
2838 crtc_y = crtc->cursor_y;
2843 crtc_h = fb->height;
2844 src_w = fb->width << 16;
2845 src_h = fb->height << 16;
2849 * setplane_internal will take care of deref'ing either the old or new
2850 * framebuffer depending on success.
2852 ret = __setplane_internal(crtc->cursor, crtc, fb,
2853 crtc_x, crtc_y, crtc_w, crtc_h,
2854 0, 0, src_w, src_h);
2856 /* Update successful; save new cursor position, if necessary */
2857 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
2858 crtc->cursor_x = req->x;
2859 crtc->cursor_y = req->y;
2865 static int drm_mode_cursor_common(struct drm_device *dev,
2866 struct drm_mode_cursor2 *req,
2867 struct drm_file *file_priv)
2869 struct drm_crtc *crtc;
2872 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2875 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2878 crtc = drm_crtc_find(dev, req->crtc_id);
2880 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2885 * If this crtc has a universal cursor plane, call that plane's update
2886 * handler rather than using legacy cursor handlers.
2888 drm_modeset_lock_crtc(crtc, crtc->cursor);
2890 ret = drm_mode_cursor_universal(crtc, req, file_priv);
2894 if (req->flags & DRM_MODE_CURSOR_BO) {
2895 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
2899 /* Turns off the cursor if handle is 0 */
2900 if (crtc->funcs->cursor_set2)
2901 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2902 req->width, req->height, req->hot_x, req->hot_y);
2904 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2905 req->width, req->height);
2908 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2909 if (crtc->funcs->cursor_move) {
2910 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2917 drm_modeset_unlock_crtc(crtc);
2925 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2926 * @dev: drm device for the ioctl
2927 * @data: data pointer for the ioctl
2928 * @file_priv: drm file for the ioctl call
2930 * Set the cursor configuration based on user request.
2932 * Called by the user via ioctl.
2935 * Zero on success, negative errno on failure.
2937 int drm_mode_cursor_ioctl(struct drm_device *dev,
2938 void *data, struct drm_file *file_priv)
2940 struct drm_mode_cursor *req = data;
2941 struct drm_mode_cursor2 new_req;
2943 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2944 new_req.hot_x = new_req.hot_y = 0;
2946 return drm_mode_cursor_common(dev, &new_req, file_priv);
2950 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2951 * @dev: drm device for the ioctl
2952 * @data: data pointer for the ioctl
2953 * @file_priv: drm file for the ioctl call
2955 * Set the cursor configuration based on user request. This implements the 2nd
2956 * version of the cursor ioctl, which allows userspace to additionally specify
2957 * the hotspot of the pointer.
2959 * Called by the user via ioctl.
2962 * Zero on success, negative errno on failure.
2964 int drm_mode_cursor2_ioctl(struct drm_device *dev,
2965 void *data, struct drm_file *file_priv)
2967 struct drm_mode_cursor2 *req = data;
2969 return drm_mode_cursor_common(dev, req, file_priv);
2973 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2974 * @bpp: bits per pixels
2975 * @depth: bit depth per pixel
2977 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2978 * Useful in fbdev emulation code, since that deals in those values.
2980 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2986 fmt = DRM_FORMAT_C8;
2990 fmt = DRM_FORMAT_XRGB1555;
2992 fmt = DRM_FORMAT_RGB565;
2995 fmt = DRM_FORMAT_RGB888;
2999 fmt = DRM_FORMAT_XRGB8888;
3000 else if (depth == 30)
3001 fmt = DRM_FORMAT_XRGB2101010;
3003 fmt = DRM_FORMAT_ARGB8888;
3006 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
3007 fmt = DRM_FORMAT_XRGB8888;
3013 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3016 * drm_mode_addfb - add an FB to the graphics configuration
3017 * @dev: drm device for the ioctl
3018 * @data: data pointer for the ioctl
3019 * @file_priv: drm file for the ioctl call
3021 * Add a new FB to the specified CRTC, given a user request. This is the
3022 * original addfb ioctl which only supported RGB formats.
3024 * Called by the user via ioctl.
3027 * Zero on success, negative errno on failure.
3029 int drm_mode_addfb(struct drm_device *dev,
3030 void *data, struct drm_file *file_priv)
3032 struct drm_mode_fb_cmd *or = data;
3033 struct drm_mode_fb_cmd2 r = {};
3036 /* convert to new format and call new ioctl */
3037 r.fb_id = or->fb_id;
3038 r.width = or->width;
3039 r.height = or->height;
3040 r.pitches[0] = or->pitch;
3041 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3042 r.handles[0] = or->handle;
3044 ret = drm_mode_addfb2(dev, &r, file_priv);
3048 or->fb_id = r.fb_id;
3053 static int format_check(const struct drm_mode_fb_cmd2 *r)
3055 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3059 case DRM_FORMAT_RGB332:
3060 case DRM_FORMAT_BGR233:
3061 case DRM_FORMAT_XRGB4444:
3062 case DRM_FORMAT_XBGR4444:
3063 case DRM_FORMAT_RGBX4444:
3064 case DRM_FORMAT_BGRX4444:
3065 case DRM_FORMAT_ARGB4444:
3066 case DRM_FORMAT_ABGR4444:
3067 case DRM_FORMAT_RGBA4444:
3068 case DRM_FORMAT_BGRA4444:
3069 case DRM_FORMAT_XRGB1555:
3070 case DRM_FORMAT_XBGR1555:
3071 case DRM_FORMAT_RGBX5551:
3072 case DRM_FORMAT_BGRX5551:
3073 case DRM_FORMAT_ARGB1555:
3074 case DRM_FORMAT_ABGR1555:
3075 case DRM_FORMAT_RGBA5551:
3076 case DRM_FORMAT_BGRA5551:
3077 case DRM_FORMAT_RGB565:
3078 case DRM_FORMAT_BGR565:
3079 case DRM_FORMAT_RGB888:
3080 case DRM_FORMAT_BGR888:
3081 case DRM_FORMAT_XRGB8888:
3082 case DRM_FORMAT_XBGR8888:
3083 case DRM_FORMAT_RGBX8888:
3084 case DRM_FORMAT_BGRX8888:
3085 case DRM_FORMAT_ARGB8888:
3086 case DRM_FORMAT_ABGR8888:
3087 case DRM_FORMAT_RGBA8888:
3088 case DRM_FORMAT_BGRA8888:
3089 case DRM_FORMAT_XRGB2101010:
3090 case DRM_FORMAT_XBGR2101010:
3091 case DRM_FORMAT_RGBX1010102:
3092 case DRM_FORMAT_BGRX1010102:
3093 case DRM_FORMAT_ARGB2101010:
3094 case DRM_FORMAT_ABGR2101010:
3095 case DRM_FORMAT_RGBA1010102:
3096 case DRM_FORMAT_BGRA1010102:
3097 case DRM_FORMAT_YUYV:
3098 case DRM_FORMAT_YVYU:
3099 case DRM_FORMAT_UYVY:
3100 case DRM_FORMAT_VYUY:
3101 case DRM_FORMAT_AYUV:
3102 case DRM_FORMAT_NV12:
3103 case DRM_FORMAT_NV21:
3104 case DRM_FORMAT_NV16:
3105 case DRM_FORMAT_NV61:
3106 case DRM_FORMAT_NV24:
3107 case DRM_FORMAT_NV42:
3108 case DRM_FORMAT_YUV410:
3109 case DRM_FORMAT_YVU410:
3110 case DRM_FORMAT_YUV411:
3111 case DRM_FORMAT_YVU411:
3112 case DRM_FORMAT_YUV420:
3113 case DRM_FORMAT_YVU420:
3114 case DRM_FORMAT_YUV422:
3115 case DRM_FORMAT_YVU422:
3116 case DRM_FORMAT_YUV444:
3117 case DRM_FORMAT_YVU444:
3120 DRM_DEBUG_KMS("invalid pixel format %s\n",
3121 drm_get_format_name(r->pixel_format));
3126 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
3128 int ret, hsub, vsub, num_planes, i;
3130 ret = format_check(r);
3132 DRM_DEBUG_KMS("bad framebuffer format %s\n",
3133 drm_get_format_name(r->pixel_format));
3137 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3138 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3139 num_planes = drm_format_num_planes(r->pixel_format);
3141 if (r->width == 0 || r->width % hsub) {
3142 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
3146 if (r->height == 0 || r->height % vsub) {
3147 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
3151 for (i = 0; i < num_planes; i++) {
3152 unsigned int width = r->width / (i != 0 ? hsub : 1);
3153 unsigned int height = r->height / (i != 0 ? vsub : 1);
3154 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
3156 if (!r->handles[i]) {
3157 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
3161 if ((uint64_t) width * cpp > UINT_MAX)
3164 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3167 if (r->pitches[i] < width * cpp) {
3168 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
3176 static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
3177 struct drm_mode_fb_cmd2 *r,
3178 struct drm_file *file_priv)
3180 struct drm_mode_config *config = &dev->mode_config;
3181 struct drm_framebuffer *fb;
3184 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
3185 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
3186 return ERR_PTR(-EINVAL);
3189 if ((config->min_width > r->width) || (r->width > config->max_width)) {
3190 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3191 r->width, config->min_width, config->max_width);
3192 return ERR_PTR(-EINVAL);
3194 if ((config->min_height > r->height) || (r->height > config->max_height)) {
3195 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3196 r->height, config->min_height, config->max_height);
3197 return ERR_PTR(-EINVAL);
3200 ret = framebuffer_check(r);
3202 return ERR_PTR(ret);
3204 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
3206 DRM_DEBUG_KMS("could not create framebuffer\n");
3210 mutex_lock(&file_priv->fbs_lock);
3211 r->fb_id = fb->base.id;
3212 list_add(&fb->filp_head, &file_priv->fbs);
3213 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3214 mutex_unlock(&file_priv->fbs_lock);
3220 * drm_mode_addfb2 - add an FB to the graphics configuration
3221 * @dev: drm device for the ioctl
3222 * @data: data pointer for the ioctl
3223 * @file_priv: drm file for the ioctl call
3225 * Add a new FB to the specified CRTC, given a user request with format. This is
3226 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3227 * and uses fourcc codes as pixel format specifiers.
3229 * Called by the user via ioctl.
3232 * Zero on success, negative errno on failure.
3234 int drm_mode_addfb2(struct drm_device *dev,
3235 void *data, struct drm_file *file_priv)
3237 struct drm_framebuffer *fb;
3239 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3242 fb = add_framebuffer_internal(dev, data, file_priv);
3250 * drm_mode_rmfb - remove an FB from the configuration
3251 * @dev: drm device for the ioctl
3252 * @data: data pointer for the ioctl
3253 * @file_priv: drm file for the ioctl call
3255 * Remove the FB specified by the user.
3257 * Called by the user via ioctl.
3260 * Zero on success, negative errno on failure.
3262 int drm_mode_rmfb(struct drm_device *dev,
3263 void *data, struct drm_file *file_priv)
3265 struct drm_framebuffer *fb = NULL;
3266 struct drm_framebuffer *fbl = NULL;
3267 uint32_t *id = data;
3270 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3273 mutex_lock(&file_priv->fbs_lock);
3274 mutex_lock(&dev->mode_config.fb_lock);
3275 fb = __drm_framebuffer_lookup(dev, *id);
3279 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3285 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3286 __drm_framebuffer_unregister(dev, fb);
3288 list_del_init(&fb->filp_head);
3289 mutex_unlock(&dev->mode_config.fb_lock);
3290 mutex_unlock(&file_priv->fbs_lock);
3292 drm_framebuffer_remove(fb);
3297 mutex_unlock(&dev->mode_config.fb_lock);
3298 mutex_unlock(&file_priv->fbs_lock);
3304 * drm_mode_getfb - get FB info
3305 * @dev: drm device for the ioctl
3306 * @data: data pointer for the ioctl
3307 * @file_priv: drm file for the ioctl call
3309 * Lookup the FB given its ID and return info about it.
3311 * Called by the user via ioctl.
3314 * Zero on success, negative errno on failure.
3316 int drm_mode_getfb(struct drm_device *dev,
3317 void *data, struct drm_file *file_priv)
3319 struct drm_mode_fb_cmd *r = data;
3320 struct drm_framebuffer *fb;
3323 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3326 fb = drm_framebuffer_lookup(dev, r->fb_id);
3330 r->height = fb->height;
3331 r->width = fb->width;
3332 r->depth = fb->depth;
3333 r->bpp = fb->bits_per_pixel;
3334 r->pitch = fb->pitches[0];
3335 if (fb->funcs->create_handle) {
3336 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
3337 drm_is_control_client(file_priv)) {
3338 ret = fb->funcs->create_handle(fb, file_priv,
3341 /* GET_FB() is an unprivileged ioctl so we must not
3342 * return a buffer-handle to non-master processes! For
3343 * backwards-compatibility reasons, we cannot make
3344 * GET_FB() privileged, so just return an invalid handle
3345 * for non-masters. */
3353 drm_framebuffer_unreference(fb);
3359 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3360 * @dev: drm device for the ioctl
3361 * @data: data pointer for the ioctl
3362 * @file_priv: drm file for the ioctl call
3364 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3365 * rectangle list. Generic userspace which does frontbuffer rendering must call
3366 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3367 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3369 * Modesetting drivers which always update the frontbuffer do not need to
3370 * implement the corresponding ->dirty framebuffer callback.
3372 * Called by the user via ioctl.
3375 * Zero on success, negative errno on failure.
3377 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3378 void *data, struct drm_file *file_priv)
3380 struct drm_clip_rect __user *clips_ptr;
3381 struct drm_clip_rect *clips = NULL;
3382 struct drm_mode_fb_dirty_cmd *r = data;
3383 struct drm_framebuffer *fb;
3388 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3391 fb = drm_framebuffer_lookup(dev, r->fb_id);
3395 num_clips = r->num_clips;
3396 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3398 if (!num_clips != !clips_ptr) {
3403 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3405 /* If userspace annotates copy, clips must come in pairs */
3406 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3411 if (num_clips && clips_ptr) {
3412 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3416 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
3422 ret = copy_from_user(clips, clips_ptr,
3423 num_clips * sizeof(*clips));
3430 if (fb->funcs->dirty) {
3431 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3440 drm_framebuffer_unreference(fb);
3447 * drm_fb_release - remove and free the FBs on this file
3448 * @priv: drm file for the ioctl
3450 * Destroy all the FBs associated with @filp.
3452 * Called by the user via ioctl.
3455 * Zero on success, negative errno on failure.
3457 void drm_fb_release(struct drm_file *priv)
3459 struct drm_device *dev = priv->minor->dev;
3460 struct drm_framebuffer *fb, *tfb;
3463 * When the file gets released that means no one else can access the fb
3464 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3465 * avoid upsetting lockdep since the universal cursor code adds a
3466 * framebuffer while holding mutex locks.
3468 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3469 * locks is impossible here since no one else but this function can get
3472 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3474 mutex_lock(&dev->mode_config.fb_lock);
3475 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
3476 __drm_framebuffer_unregister(dev, fb);
3477 mutex_unlock(&dev->mode_config.fb_lock);
3479 list_del_init(&fb->filp_head);
3481 /* This will also drop the fpriv->fbs reference. */
3482 drm_framebuffer_remove(fb);
3487 * drm_property_create - create a new property type
3489 * @flags: flags specifying the property type
3490 * @name: name of the property
3491 * @num_values: number of pre-defined values
3493 * This creates a new generic drm property which can then be attached to a drm
3494 * object with drm_object_attach_property. The returned property object must be
3495 * freed with drm_property_destroy.
3497 * Note that the DRM core keeps a per-device list of properties and that, if
3498 * drm_mode_config_cleanup() is called, it will destroy all properties created
3502 * A pointer to the newly created property on success, NULL on failure.
3504 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3505 const char *name, int num_values)
3507 struct drm_property *property = NULL;
3510 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3514 property->dev = dev;
3517 property->values = kcalloc(num_values, sizeof(uint64_t),
3519 if (!property->values)
3523 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3527 property->flags = flags;
3528 property->num_values = num_values;
3529 INIT_LIST_HEAD(&property->enum_list);
3532 strncpy(property->name, name, DRM_PROP_NAME_LEN);
3533 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3536 list_add_tail(&property->head, &dev->mode_config.property_list);
3538 WARN_ON(!drm_property_type_valid(property));
3542 kfree(property->values);
3546 EXPORT_SYMBOL(drm_property_create);
3549 * drm_property_create_enum - create a new enumeration property type
3551 * @flags: flags specifying the property type
3552 * @name: name of the property
3553 * @props: enumeration lists with property values
3554 * @num_values: number of pre-defined values
3556 * This creates a new generic drm property which can then be attached to a drm
3557 * object with drm_object_attach_property. The returned property object must be
3558 * freed with drm_property_destroy.
3560 * Userspace is only allowed to set one of the predefined values for enumeration
3564 * A pointer to the newly created property on success, NULL on failure.
3566 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3568 const struct drm_prop_enum_list *props,
3571 struct drm_property *property;
3574 flags |= DRM_MODE_PROP_ENUM;
3576 property = drm_property_create(dev, flags, name, num_values);
3580 for (i = 0; i < num_values; i++) {
3581 ret = drm_property_add_enum(property, i,
3585 drm_property_destroy(dev, property);
3592 EXPORT_SYMBOL(drm_property_create_enum);
3595 * drm_property_create_bitmask - create a new bitmask property type
3597 * @flags: flags specifying the property type
3598 * @name: name of the property
3599 * @props: enumeration lists with property bitflags
3600 * @num_props: size of the @props array
3601 * @supported_bits: bitmask of all supported enumeration values
3603 * This creates a new bitmask drm property which can then be attached to a drm
3604 * object with drm_object_attach_property. The returned property object must be
3605 * freed with drm_property_destroy.
3607 * Compared to plain enumeration properties userspace is allowed to set any
3608 * or'ed together combination of the predefined property bitflag values
3611 * A pointer to the newly created property on success, NULL on failure.
3613 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3614 int flags, const char *name,
3615 const struct drm_prop_enum_list *props,
3617 uint64_t supported_bits)
3619 struct drm_property *property;
3620 int i, ret, index = 0;
3621 int num_values = hweight64(supported_bits);
3623 flags |= DRM_MODE_PROP_BITMASK;
3625 property = drm_property_create(dev, flags, name, num_values);
3628 for (i = 0; i < num_props; i++) {
3629 if (!(supported_bits & (1ULL << props[i].type)))
3632 if (WARN_ON(index >= num_values)) {
3633 drm_property_destroy(dev, property);
3637 ret = drm_property_add_enum(property, index++,
3641 drm_property_destroy(dev, property);
3648 EXPORT_SYMBOL(drm_property_create_bitmask);
3650 static struct drm_property *property_create_range(struct drm_device *dev,
3651 int flags, const char *name,
3652 uint64_t min, uint64_t max)
3654 struct drm_property *property;
3656 property = drm_property_create(dev, flags, name, 2);
3660 property->values[0] = min;
3661 property->values[1] = max;
3667 * drm_property_create_range - create a new ranged property type
3669 * @flags: flags specifying the property type
3670 * @name: name of the property
3671 * @min: minimum value of the property
3672 * @max: maximum value of the property
3674 * This creates a new generic drm property which can then be attached to a drm
3675 * object with drm_object_attach_property. The returned property object must be
3676 * freed with drm_property_destroy.
3678 * Userspace is allowed to set any integer value in the (min, max) range
3682 * A pointer to the newly created property on success, NULL on failure.
3684 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3686 uint64_t min, uint64_t max)
3688 return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
3691 EXPORT_SYMBOL(drm_property_create_range);
3693 struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
3694 int flags, const char *name,
3695 int64_t min, int64_t max)
3697 return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
3698 name, I642U64(min), I642U64(max));
3700 EXPORT_SYMBOL(drm_property_create_signed_range);
3702 struct drm_property *drm_property_create_object(struct drm_device *dev,
3703 int flags, const char *name, uint32_t type)
3705 struct drm_property *property;
3707 flags |= DRM_MODE_PROP_OBJECT;
3709 property = drm_property_create(dev, flags, name, 1);
3713 property->values[0] = type;
3717 EXPORT_SYMBOL(drm_property_create_object);
3720 * drm_property_add_enum - add a possible value to an enumeration property
3721 * @property: enumeration property to change
3722 * @index: index of the new enumeration
3723 * @value: value of the new enumeration
3724 * @name: symbolic name of the new enumeration
3726 * This functions adds enumerations to a property.
3728 * It's use is deprecated, drivers should use one of the more specific helpers
3729 * to directly create the property with all enumerations already attached.
3732 * Zero on success, error code on failure.
3734 int drm_property_add_enum(struct drm_property *property, int index,
3735 uint64_t value, const char *name)
3737 struct drm_property_enum *prop_enum;
3739 if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3740 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
3744 * Bitmask enum properties have the additional constraint of values
3747 if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
3751 if (!list_empty(&property->enum_list)) {
3752 list_for_each_entry(prop_enum, &property->enum_list, head) {
3753 if (prop_enum->value == value) {
3754 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3755 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3761 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3765 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3766 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3767 prop_enum->value = value;
3769 property->values[index] = value;
3770 list_add_tail(&prop_enum->head, &property->enum_list);
3773 EXPORT_SYMBOL(drm_property_add_enum);
3776 * drm_property_destroy - destroy a drm property
3778 * @property: property to destry
3780 * This function frees a property including any attached resources like
3781 * enumeration values.
3783 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3785 struct drm_property_enum *prop_enum, *pt;
3787 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
3788 list_del(&prop_enum->head);
3792 if (property->num_values)
3793 kfree(property->values);
3794 drm_mode_object_put(dev, &property->base);
3795 list_del(&property->head);
3798 EXPORT_SYMBOL(drm_property_destroy);
3801 * drm_object_attach_property - attach a property to a modeset object
3802 * @obj: drm modeset object
3803 * @property: property to attach
3804 * @init_val: initial value of the property
3806 * This attaches the given property to the modeset object with the given initial
3807 * value. Currently this function cannot fail since the properties are stored in
3808 * a statically sized array.
3810 void drm_object_attach_property(struct drm_mode_object *obj,
3811 struct drm_property *property,
3814 int count = obj->properties->count;
3816 if (count == DRM_OBJECT_MAX_PROPERTY) {
3817 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3818 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3819 "you see this message on the same object type.\n",
3824 obj->properties->properties[count] = property;
3825 obj->properties->values[count] = init_val;
3826 obj->properties->count++;
3828 EXPORT_SYMBOL(drm_object_attach_property);
3831 * drm_object_property_set_value - set the value of a property
3832 * @obj: drm mode object to set property value for
3833 * @property: property to set
3834 * @val: value the property should be set to
3836 * This functions sets a given property on a given object. This function only
3837 * changes the software state of the property, it does not call into the
3838 * driver's ->set_property callback.
3841 * Zero on success, error code on failure.
3843 int drm_object_property_set_value(struct drm_mode_object *obj,
3844 struct drm_property *property, uint64_t val)
3848 for (i = 0; i < obj->properties->count; i++) {
3849 if (obj->properties->properties[i] == property) {
3850 obj->properties->values[i] = val;
3857 EXPORT_SYMBOL(drm_object_property_set_value);
3860 * drm_object_property_get_value - retrieve the value of a property
3861 * @obj: drm mode object to get property value from
3862 * @property: property to retrieve
3863 * @val: storage for the property value
3865 * This function retrieves the softare state of the given property for the given
3866 * property. Since there is no driver callback to retrieve the current property
3867 * value this might be out of sync with the hardware, depending upon the driver
3871 * Zero on success, error code on failure.
3873 int drm_object_property_get_value(struct drm_mode_object *obj,
3874 struct drm_property *property, uint64_t *val)
3878 for (i = 0; i < obj->properties->count; i++) {
3879 if (obj->properties->properties[i] == property) {
3880 *val = obj->properties->values[i];
3887 EXPORT_SYMBOL(drm_object_property_get_value);
3890 * drm_mode_getproperty_ioctl - get the property metadata
3893 * @file_priv: DRM file info
3895 * This function retrieves the metadata for a given property, like the different
3896 * possible values for an enum property or the limits for a range property.
3898 * Blob properties are special
3900 * Called by the user via ioctl.
3903 * Zero on success, negative errno on failure.
3905 int drm_mode_getproperty_ioctl(struct drm_device *dev,
3906 void *data, struct drm_file *file_priv)
3908 struct drm_mode_get_property *out_resp = data;
3909 struct drm_property *property;
3911 int value_count = 0;
3914 struct drm_property_enum *prop_enum;
3915 struct drm_mode_property_enum __user *enum_ptr;
3916 uint64_t __user *values_ptr;
3918 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3921 drm_modeset_lock_all(dev);
3922 property = drm_property_find(dev, out_resp->prop_id);
3928 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3929 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3930 list_for_each_entry(prop_enum, &property->enum_list, head)
3934 value_count = property->num_values;
3936 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
3937 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
3938 out_resp->flags = property->flags;
3940 if ((out_resp->count_values >= value_count) && value_count) {
3941 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
3942 for (i = 0; i < value_count; i++) {
3943 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
3949 out_resp->count_values = value_count;
3951 if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
3952 drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
3953 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
3955 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3956 list_for_each_entry(prop_enum, &property->enum_list, head) {
3958 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
3963 if (copy_to_user(&enum_ptr[copied].name,
3964 &prop_enum->name, DRM_PROP_NAME_LEN)) {
3971 out_resp->count_enum_blobs = enum_count;
3975 * NOTE: The idea seems to have been to use this to read all the blob
3976 * property values. But nothing ever added them to the corresponding
3977 * list, userspace always used the special-purpose get_blob ioctl to
3978 * read the value for a blob property. It also doesn't make a lot of
3979 * sense to return values here when everything else is just metadata for
3980 * the property itself.
3982 if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
3983 out_resp->count_enum_blobs = 0;
3985 drm_modeset_unlock_all(dev);
3989 static struct drm_property_blob *
3990 drm_property_create_blob(struct drm_device *dev, size_t length,
3993 struct drm_property_blob *blob;
3996 if (!length || !data)
3999 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
4003 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
4009 blob->length = length;
4011 memcpy(blob->data, data, length);
4013 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
4017 static void drm_property_destroy_blob(struct drm_device *dev,
4018 struct drm_property_blob *blob)
4020 drm_mode_object_put(dev, &blob->base);
4021 list_del(&blob->head);
4026 * drm_mode_getblob_ioctl - get the contents of a blob property value
4029 * @file_priv: DRM file info
4031 * This function retrieves the contents of a blob property. The value stored in
4032 * an object's blob property is just a normal modeset object id.
4034 * Called by the user via ioctl.
4037 * Zero on success, negative errno on failure.
4039 int drm_mode_getblob_ioctl(struct drm_device *dev,
4040 void *data, struct drm_file *file_priv)
4042 struct drm_mode_get_blob *out_resp = data;
4043 struct drm_property_blob *blob;
4045 void __user *blob_ptr;
4047 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4050 drm_modeset_lock_all(dev);
4051 blob = drm_property_blob_find(dev, out_resp->blob_id);
4057 if (out_resp->length == blob->length) {
4058 blob_ptr = (void __user *)(unsigned long)out_resp->data;
4059 if (copy_to_user(blob_ptr, blob->data, blob->length)) {
4064 out_resp->length = blob->length;
4067 drm_modeset_unlock_all(dev);
4072 * drm_mode_connector_set_path_property - set tile property on connector
4073 * @connector: connector to set property on.
4074 * @path: path to use for property.
4076 * This creates a property to expose to userspace to specify a
4077 * connector path. This is mainly used for DisplayPort MST where
4078 * connectors have a topology and we want to allow userspace to give
4079 * them more meaningful names.
4082 * Zero on success, negative errno on failure.
4084 int drm_mode_connector_set_path_property(struct drm_connector *connector,
4087 struct drm_device *dev = connector->dev;
4088 size_t size = strlen(path) + 1;
4091 connector->path_blob_ptr = drm_property_create_blob(connector->dev,
4093 if (!connector->path_blob_ptr)
4096 ret = drm_object_property_set_value(&connector->base,
4097 dev->mode_config.path_property,
4098 connector->path_blob_ptr->base.id);
4101 EXPORT_SYMBOL(drm_mode_connector_set_path_property);
4104 * drm_mode_connector_set_tile_property - set tile property on connector
4105 * @connector: connector to set property on.
4107 * This looks up the tile information for a connector, and creates a
4108 * property for userspace to parse if it exists. The property is of
4109 * the form of 8 integers using ':' as a separator.
4112 * Zero on success, errno on failure.
4114 int drm_mode_connector_set_tile_property(struct drm_connector *connector)
4116 struct drm_device *dev = connector->dev;
4120 if (connector->tile_blob_ptr)
4121 drm_property_destroy_blob(dev, connector->tile_blob_ptr);
4123 if (!connector->has_tile) {
4124 connector->tile_blob_ptr = NULL;
4125 ret = drm_object_property_set_value(&connector->base,
4126 dev->mode_config.tile_property, 0);
4130 snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
4131 connector->tile_group->id, connector->tile_is_single_monitor,
4132 connector->num_h_tile, connector->num_v_tile,
4133 connector->tile_h_loc, connector->tile_v_loc,
4134 connector->tile_h_size, connector->tile_v_size);
4135 size = strlen(tile) + 1;
4137 connector->tile_blob_ptr = drm_property_create_blob(connector->dev,
4139 if (!connector->tile_blob_ptr)
4142 ret = drm_object_property_set_value(&connector->base,
4143 dev->mode_config.tile_property,
4144 connector->tile_blob_ptr->base.id);
4147 EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
4150 * drm_mode_connector_update_edid_property - update the edid property of a connector
4151 * @connector: drm connector
4152 * @edid: new value of the edid property
4154 * This function creates a new blob modeset object and assigns its id to the
4155 * connector's edid property.
4158 * Zero on success, negative errno on failure.
4160 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
4161 const struct edid *edid)
4163 struct drm_device *dev = connector->dev;
4167 /* ignore requests to set edid when overridden */
4168 if (connector->override_edid)
4171 if (connector->edid_blob_ptr)
4172 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
4174 /* Delete edid, when there is none. */
4176 connector->edid_blob_ptr = NULL;
4177 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
4181 size = EDID_LENGTH * (1 + edid->extensions);
4182 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
4184 if (!connector->edid_blob_ptr)
4187 ret = drm_object_property_set_value(&connector->base,
4188 dev->mode_config.edid_property,
4189 connector->edid_blob_ptr->base.id);
4193 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
4195 /* Some properties could refer to dynamic refcnt'd objects, or things that
4196 * need special locking to handle lifetime issues (ie. to ensure the prop
4197 * value doesn't become invalid part way through the property update due to
4198 * race). The value returned by reference via 'obj' should be passed back
4199 * to drm_property_change_valid_put() after the property is set (and the
4200 * object to which the property is attached has a chance to take it's own
4203 static bool drm_property_change_valid_get(struct drm_property *property,
4204 uint64_t value, struct drm_mode_object **ref)
4208 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
4213 if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
4214 if (value < property->values[0] || value > property->values[1])
4217 } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
4218 int64_t svalue = U642I64(value);
4220 if (svalue < U642I64(property->values[0]) ||
4221 svalue > U642I64(property->values[1]))
4224 } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
4225 uint64_t valid_mask = 0;
4227 for (i = 0; i < property->num_values; i++)
4228 valid_mask |= (1ULL << property->values[i]);
4229 return !(value & ~valid_mask);
4230 } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
4231 /* Only the driver knows */
4233 } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4234 /* a zero value for an object property translates to null: */
4238 /* handle refcnt'd objects specially: */
4239 if (property->values[0] == DRM_MODE_OBJECT_FB) {
4240 struct drm_framebuffer *fb;
4241 fb = drm_framebuffer_lookup(property->dev, value);
4249 return _object_find(property->dev, value, property->values[0]) != NULL;
4253 for (i = 0; i < property->num_values; i++)
4254 if (property->values[i] == value)
4259 for (i = 0; i < property->num_values; i++)
4260 if (property->values[i] == value)
4265 static void drm_property_change_valid_put(struct drm_property *property,
4266 struct drm_mode_object *ref)
4271 if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
4272 if (property->values[0] == DRM_MODE_OBJECT_FB)
4273 drm_framebuffer_unreference(obj_to_fb(ref));
4278 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
4281 * @file_priv: DRM file info
4283 * This function sets the current value for a connectors's property. It also
4284 * calls into a driver's ->set_property callback to update the hardware state
4286 * Called by the user via ioctl.
4289 * Zero on success, negative errno on failure.
4291 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
4292 void *data, struct drm_file *file_priv)
4294 struct drm_mode_connector_set_property *conn_set_prop = data;
4295 struct drm_mode_obj_set_property obj_set_prop = {
4296 .value = conn_set_prop->value,
4297 .prop_id = conn_set_prop->prop_id,
4298 .obj_id = conn_set_prop->connector_id,
4299 .obj_type = DRM_MODE_OBJECT_CONNECTOR
4302 /* It does all the locking and checking we need */
4303 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
4306 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
4307 struct drm_property *property,
4311 struct drm_connector *connector = obj_to_connector(obj);
4313 /* Do DPMS ourselves */
4314 if (property == connector->dev->mode_config.dpms_property) {
4315 if (connector->funcs->dpms)
4316 (*connector->funcs->dpms)(connector, (int)value);
4318 } else if (connector->funcs->set_property)
4319 ret = connector->funcs->set_property(connector, property, value);
4321 /* store the property value if successful */
4323 drm_object_property_set_value(&connector->base, property, value);
4327 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
4328 struct drm_property *property,
4332 struct drm_crtc *crtc = obj_to_crtc(obj);
4334 if (crtc->funcs->set_property)
4335 ret = crtc->funcs->set_property(crtc, property, value);
4337 drm_object_property_set_value(obj, property, value);
4343 * drm_mode_plane_set_obj_prop - set the value of a property
4344 * @plane: drm plane object to set property value for
4345 * @property: property to set
4346 * @value: value the property should be set to
4348 * This functions sets a given property on a given plane object. This function
4349 * calls the driver's ->set_property callback and changes the software state of
4350 * the property if the callback succeeds.
4353 * Zero on success, error code on failure.
4355 int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
4356 struct drm_property *property,
4360 struct drm_mode_object *obj = &plane->base;
4362 if (plane->funcs->set_property)
4363 ret = plane->funcs->set_property(plane, property, value);
4365 drm_object_property_set_value(obj, property, value);
4369 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
4372 * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
4375 * @file_priv: DRM file info
4377 * This function retrieves the current value for an object's property. Compared
4378 * to the connector specific ioctl this one is extended to also work on crtc and
4381 * Called by the user via ioctl.
4384 * Zero on success, negative errno on failure.
4386 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
4387 struct drm_file *file_priv)
4389 struct drm_mode_obj_get_properties *arg = data;
4390 struct drm_mode_object *obj;
4394 int props_count = 0;
4395 uint32_t __user *props_ptr;
4396 uint64_t __user *prop_values_ptr;
4398 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4401 drm_modeset_lock_all(dev);
4403 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4408 if (!obj->properties) {
4413 props_count = obj->properties->count;
4415 /* This ioctl is called twice, once to determine how much space is
4416 * needed, and the 2nd time to fill it. */
4417 if ((arg->count_props >= props_count) && props_count) {
4419 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
4420 prop_values_ptr = (uint64_t __user *)(unsigned long)
4421 (arg->prop_values_ptr);
4422 for (i = 0; i < props_count; i++) {
4423 struct drm_property *prop = obj->properties->properties[i];
4426 ret = drm_object_property_get_value(obj, prop, &val);
4430 if (put_user(prop->base.id, props_ptr + copied)) {
4435 if (put_user(val, prop_values_ptr + copied)) {
4442 arg->count_props = props_count;
4444 drm_modeset_unlock_all(dev);
4449 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
4452 * @file_priv: DRM file info
4454 * This function sets the current value for an object's property. It also calls
4455 * into a driver's ->set_property callback to update the hardware state.
4456 * Compared to the connector specific ioctl this one is extended to also work on
4457 * crtc and plane objects.
4459 * Called by the user via ioctl.
4462 * Zero on success, negative errno on failure.
4464 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
4465 struct drm_file *file_priv)
4467 struct drm_mode_obj_set_property *arg = data;
4468 struct drm_mode_object *arg_obj;
4469 struct drm_mode_object *prop_obj;
4470 struct drm_property *property;
4471 int i, ret = -EINVAL;
4472 struct drm_mode_object *ref;
4474 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4477 drm_modeset_lock_all(dev);
4479 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
4484 if (!arg_obj->properties)
4487 for (i = 0; i < arg_obj->properties->count; i++)
4488 if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
4491 if (i == arg_obj->properties->count)
4494 prop_obj = drm_mode_object_find(dev, arg->prop_id,
4495 DRM_MODE_OBJECT_PROPERTY);
4500 property = obj_to_property(prop_obj);
4502 if (!drm_property_change_valid_get(property, arg->value, &ref))
4505 switch (arg_obj->type) {
4506 case DRM_MODE_OBJECT_CONNECTOR:
4507 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
4510 case DRM_MODE_OBJECT_CRTC:
4511 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
4513 case DRM_MODE_OBJECT_PLANE:
4514 ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
4515 property, arg->value);
4519 drm_property_change_valid_put(property, ref);
4522 drm_modeset_unlock_all(dev);
4527 * drm_mode_connector_attach_encoder - attach a connector to an encoder
4528 * @connector: connector to attach
4529 * @encoder: encoder to attach @connector to
4531 * This function links up a connector to an encoder. Note that the routing
4532 * restrictions between encoders and crtcs are exposed to userspace through the
4533 * possible_clones and possible_crtcs bitmasks.
4536 * Zero on success, negative errno on failure.
4538 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
4539 struct drm_encoder *encoder)
4543 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
4544 if (connector->encoder_ids[i] == 0) {
4545 connector->encoder_ids[i] = encoder->base.id;
4551 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
4554 * drm_mode_crtc_set_gamma_size - set the gamma table size
4555 * @crtc: CRTC to set the gamma table size for
4556 * @gamma_size: size of the gamma table
4558 * Drivers which support gamma tables should set this to the supported gamma
4559 * table size when initializing the CRTC. Currently the drm core only supports a
4560 * fixed gamma table size.
4563 * Zero on success, negative errno on failure.
4565 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
4568 crtc->gamma_size = gamma_size;
4570 crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
4572 if (!crtc->gamma_store) {
4573 crtc->gamma_size = 0;
4579 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
4582 * drm_mode_gamma_set_ioctl - set the gamma table
4585 * @file_priv: DRM file info
4587 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
4588 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
4590 * Called by the user via ioctl.
4593 * Zero on success, negative errno on failure.
4595 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
4596 void *data, struct drm_file *file_priv)
4598 struct drm_mode_crtc_lut *crtc_lut = data;
4599 struct drm_crtc *crtc;
4600 void *r_base, *g_base, *b_base;
4604 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4607 drm_modeset_lock_all(dev);
4608 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4614 if (crtc->funcs->gamma_set == NULL) {
4619 /* memcpy into gamma store */
4620 if (crtc_lut->gamma_size != crtc->gamma_size) {
4625 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4626 r_base = crtc->gamma_store;
4627 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
4632 g_base = r_base + size;
4633 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
4638 b_base = g_base + size;
4639 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
4644 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
4647 drm_modeset_unlock_all(dev);
4653 * drm_mode_gamma_get_ioctl - get the gamma table
4656 * @file_priv: DRM file info
4658 * Copy the current gamma table into the storage provided. This also provides
4659 * the gamma table size the driver expects, which can be used to size the
4660 * allocated storage.
4662 * Called by the user via ioctl.
4665 * Zero on success, negative errno on failure.
4667 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
4668 void *data, struct drm_file *file_priv)
4670 struct drm_mode_crtc_lut *crtc_lut = data;
4671 struct drm_crtc *crtc;
4672 void *r_base, *g_base, *b_base;
4676 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4679 drm_modeset_lock_all(dev);
4680 crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
4686 /* memcpy into gamma store */
4687 if (crtc_lut->gamma_size != crtc->gamma_size) {
4692 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4693 r_base = crtc->gamma_store;
4694 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4699 g_base = r_base + size;
4700 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4705 b_base = g_base + size;
4706 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4711 drm_modeset_unlock_all(dev);
4716 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4719 * @file_priv: DRM file info
4721 * This schedules an asynchronous update on a given CRTC, called page flip.
4722 * Optionally a drm event is generated to signal the completion of the event.
4723 * Generic drivers cannot assume that a pageflip with changed framebuffer
4724 * properties (including driver specific metadata like tiling layout) will work,
4725 * but some drivers support e.g. pixel format changes through the pageflip
4728 * Called by the user via ioctl.
4731 * Zero on success, negative errno on failure.
4733 int drm_mode_page_flip_ioctl(struct drm_device *dev,
4734 void *data, struct drm_file *file_priv)
4736 struct drm_mode_crtc_page_flip *page_flip = data;
4737 struct drm_crtc *crtc;
4738 struct drm_framebuffer *fb = NULL;
4739 struct drm_pending_vblank_event *e = NULL;
4740 unsigned long flags;
4743 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4744 page_flip->reserved != 0)
4747 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4750 crtc = drm_crtc_find(dev, page_flip->crtc_id);
4754 drm_modeset_lock_crtc(crtc, crtc->primary);
4755 if (crtc->primary->fb == NULL) {
4756 /* The framebuffer is currently unbound, presumably
4757 * due to a hotplug event, that userspace has not
4764 if (crtc->funcs->page_flip == NULL)
4767 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
4773 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4777 if (crtc->primary->fb->pixel_format != fb->pixel_format) {
4778 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4783 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4785 spin_lock_irqsave(&dev->event_lock, flags);
4786 if (file_priv->event_space < sizeof(e->event)) {
4787 spin_unlock_irqrestore(&dev->event_lock, flags);
4790 file_priv->event_space -= sizeof(e->event);
4791 spin_unlock_irqrestore(&dev->event_lock, flags);
4793 e = kzalloc(sizeof(*e), GFP_KERNEL);
4795 spin_lock_irqsave(&dev->event_lock, flags);
4796 file_priv->event_space += sizeof(e->event);
4797 spin_unlock_irqrestore(&dev->event_lock, flags);
4801 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
4802 e->event.base.length = sizeof(e->event);
4803 e->event.user_data = page_flip->user_data;
4804 e->base.event = &e->event.base;
4805 e->base.file_priv = file_priv;
4807 (void (*) (struct drm_pending_event *)) kfree;
4810 crtc->primary->old_fb = crtc->primary->fb;
4811 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
4813 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4814 spin_lock_irqsave(&dev->event_lock, flags);
4815 file_priv->event_space += sizeof(e->event);
4816 spin_unlock_irqrestore(&dev->event_lock, flags);
4819 /* Keep the old fb, don't unref it. */
4820 crtc->primary->old_fb = NULL;
4823 * Warn if the driver hasn't properly updated the crtc->fb
4824 * field to reflect that the new framebuffer is now used.
4825 * Failing to do so will screw with the reference counting
4828 WARN_ON(crtc->primary->fb != fb);
4829 /* Unref only the old framebuffer. */
4835 drm_framebuffer_unreference(fb);
4836 if (crtc->primary->old_fb)
4837 drm_framebuffer_unreference(crtc->primary->old_fb);
4838 crtc->primary->old_fb = NULL;
4839 drm_modeset_unlock_crtc(crtc);
4845 * drm_mode_config_reset - call ->reset callbacks
4848 * This functions calls all the crtc's, encoder's and connector's ->reset
4849 * callback. Drivers can use this in e.g. their driver load or resume code to
4850 * reset hardware and software state.
4852 void drm_mode_config_reset(struct drm_device *dev)
4854 struct drm_crtc *crtc;
4855 struct drm_plane *plane;
4856 struct drm_encoder *encoder;
4857 struct drm_connector *connector;
4859 list_for_each_entry(plane, &dev->mode_config.plane_list, head)
4860 if (plane->funcs->reset)
4861 plane->funcs->reset(plane);
4863 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4864 if (crtc->funcs->reset)
4865 crtc->funcs->reset(crtc);
4867 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4868 if (encoder->funcs->reset)
4869 encoder->funcs->reset(encoder);
4871 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4872 connector->status = connector_status_unknown;
4874 if (connector->funcs->reset)
4875 connector->funcs->reset(connector);
4878 EXPORT_SYMBOL(drm_mode_config_reset);
4881 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4884 * @file_priv: DRM file info
4886 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4887 * TTM or something else entirely) and returns the resulting buffer handle. This
4888 * handle can then be wrapped up into a framebuffer modeset object.
4890 * Note that userspace is not allowed to use such objects for render
4891 * acceleration - drivers must create their own private ioctls for such a use
4894 * Called by the user via ioctl.
4897 * Zero on success, negative errno on failure.
4899 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
4900 void *data, struct drm_file *file_priv)
4902 struct drm_mode_create_dumb *args = data;
4903 u32 cpp, stride, size;
4905 if (!dev->driver->dumb_create)
4907 if (!args->width || !args->height || !args->bpp)
4910 /* overflow checks for 32bit size calculations */
4911 /* NOTE: DIV_ROUND_UP() can overflow */
4912 cpp = DIV_ROUND_UP(args->bpp, 8);
4913 if (!cpp || cpp > 0xffffffffU / args->width)
4915 stride = cpp * args->width;
4916 if (args->height > 0xffffffffU / stride)
4919 /* test for wrap-around */
4920 size = args->height * stride;
4921 if (PAGE_ALIGN(size) == 0)
4925 * handle, pitch and size are output parameters. Zero them out to
4926 * prevent drivers from accidentally using uninitialized data. Since
4927 * not all existing userspace is clearing these fields properly we
4928 * cannot reject IOCTL with garbage in them.
4934 return dev->driver->dumb_create(file_priv, dev, args);
4938 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4941 * @file_priv: DRM file info
4943 * Allocate an offset in the drm device node's address space to be able to
4944 * memory map a dumb buffer.
4946 * Called by the user via ioctl.
4949 * Zero on success, negative errno on failure.
4951 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
4952 void *data, struct drm_file *file_priv)
4954 struct drm_mode_map_dumb *args = data;
4956 /* call driver ioctl to get mmap offset */
4957 if (!dev->driver->dumb_map_offset)
4960 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
4964 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4967 * @file_priv: DRM file info
4969 * This destroys the userspace handle for the given dumb backing storage buffer.
4970 * Since buffer objects must be reference counted in the kernel a buffer object
4971 * won't be immediately freed if a framebuffer modeset object still uses it.
4973 * Called by the user via ioctl.
4976 * Zero on success, negative errno on failure.
4978 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
4979 void *data, struct drm_file *file_priv)
4981 struct drm_mode_destroy_dumb *args = data;
4983 if (!dev->driver->dumb_destroy)
4986 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
4990 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4991 * @format: pixel format (DRM_FORMAT_*)
4992 * @depth: storage for the depth value
4993 * @bpp: storage for the bpp value
4995 * This only supports RGB formats here for compat with code that doesn't use
4996 * pixel formats directly yet.
4998 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
5003 case DRM_FORMAT_RGB332:
5004 case DRM_FORMAT_BGR233:
5008 case DRM_FORMAT_XRGB1555:
5009 case DRM_FORMAT_XBGR1555:
5010 case DRM_FORMAT_RGBX5551:
5011 case DRM_FORMAT_BGRX5551:
5012 case DRM_FORMAT_ARGB1555:
5013 case DRM_FORMAT_ABGR1555:
5014 case DRM_FORMAT_RGBA5551:
5015 case DRM_FORMAT_BGRA5551:
5019 case DRM_FORMAT_RGB565:
5020 case DRM_FORMAT_BGR565:
5024 case DRM_FORMAT_RGB888:
5025 case DRM_FORMAT_BGR888:
5029 case DRM_FORMAT_XRGB8888:
5030 case DRM_FORMAT_XBGR8888:
5031 case DRM_FORMAT_RGBX8888:
5032 case DRM_FORMAT_BGRX8888:
5036 case DRM_FORMAT_XRGB2101010:
5037 case DRM_FORMAT_XBGR2101010:
5038 case DRM_FORMAT_RGBX1010102:
5039 case DRM_FORMAT_BGRX1010102:
5040 case DRM_FORMAT_ARGB2101010:
5041 case DRM_FORMAT_ABGR2101010:
5042 case DRM_FORMAT_RGBA1010102:
5043 case DRM_FORMAT_BGRA1010102:
5047 case DRM_FORMAT_ARGB8888:
5048 case DRM_FORMAT_ABGR8888:
5049 case DRM_FORMAT_RGBA8888:
5050 case DRM_FORMAT_BGRA8888:
5055 DRM_DEBUG_KMS("unsupported pixel format %s\n",
5056 drm_get_format_name(format));
5062 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
5065 * drm_format_num_planes - get the number of planes for format
5066 * @format: pixel format (DRM_FORMAT_*)
5069 * The number of planes used by the specified pixel format.
5071 int drm_format_num_planes(uint32_t format)
5074 case DRM_FORMAT_YUV410:
5075 case DRM_FORMAT_YVU410:
5076 case DRM_FORMAT_YUV411:
5077 case DRM_FORMAT_YVU411:
5078 case DRM_FORMAT_YUV420:
5079 case DRM_FORMAT_YVU420:
5080 case DRM_FORMAT_YUV422:
5081 case DRM_FORMAT_YVU422:
5082 case DRM_FORMAT_YUV444:
5083 case DRM_FORMAT_YVU444:
5085 case DRM_FORMAT_NV12:
5086 case DRM_FORMAT_NV21:
5087 case DRM_FORMAT_NV16:
5088 case DRM_FORMAT_NV61:
5089 case DRM_FORMAT_NV24:
5090 case DRM_FORMAT_NV42:
5096 EXPORT_SYMBOL(drm_format_num_planes);
5099 * drm_format_plane_cpp - determine the bytes per pixel value
5100 * @format: pixel format (DRM_FORMAT_*)
5101 * @plane: plane index
5104 * The bytes per pixel value for the specified plane.
5106 int drm_format_plane_cpp(uint32_t format, int plane)
5111 if (plane >= drm_format_num_planes(format))
5115 case DRM_FORMAT_YUYV:
5116 case DRM_FORMAT_YVYU:
5117 case DRM_FORMAT_UYVY:
5118 case DRM_FORMAT_VYUY:
5120 case DRM_FORMAT_NV12:
5121 case DRM_FORMAT_NV21:
5122 case DRM_FORMAT_NV16:
5123 case DRM_FORMAT_NV61:
5124 case DRM_FORMAT_NV24:
5125 case DRM_FORMAT_NV42:
5126 return plane ? 2 : 1;
5127 case DRM_FORMAT_YUV410:
5128 case DRM_FORMAT_YVU410:
5129 case DRM_FORMAT_YUV411:
5130 case DRM_FORMAT_YVU411:
5131 case DRM_FORMAT_YUV420:
5132 case DRM_FORMAT_YVU420:
5133 case DRM_FORMAT_YUV422:
5134 case DRM_FORMAT_YVU422:
5135 case DRM_FORMAT_YUV444:
5136 case DRM_FORMAT_YVU444:
5139 drm_fb_get_bpp_depth(format, &depth, &bpp);
5143 EXPORT_SYMBOL(drm_format_plane_cpp);
5146 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
5147 * @format: pixel format (DRM_FORMAT_*)
5150 * The horizontal chroma subsampling factor for the
5151 * specified pixel format.
5153 int drm_format_horz_chroma_subsampling(uint32_t format)
5156 case DRM_FORMAT_YUV411:
5157 case DRM_FORMAT_YVU411:
5158 case DRM_FORMAT_YUV410:
5159 case DRM_FORMAT_YVU410:
5161 case DRM_FORMAT_YUYV:
5162 case DRM_FORMAT_YVYU:
5163 case DRM_FORMAT_UYVY:
5164 case DRM_FORMAT_VYUY:
5165 case DRM_FORMAT_NV12:
5166 case DRM_FORMAT_NV21:
5167 case DRM_FORMAT_NV16:
5168 case DRM_FORMAT_NV61:
5169 case DRM_FORMAT_YUV422:
5170 case DRM_FORMAT_YVU422:
5171 case DRM_FORMAT_YUV420:
5172 case DRM_FORMAT_YVU420:
5178 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
5181 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
5182 * @format: pixel format (DRM_FORMAT_*)
5185 * The vertical chroma subsampling factor for the
5186 * specified pixel format.
5188 int drm_format_vert_chroma_subsampling(uint32_t format)
5191 case DRM_FORMAT_YUV410:
5192 case DRM_FORMAT_YVU410:
5194 case DRM_FORMAT_YUV420:
5195 case DRM_FORMAT_YVU420:
5196 case DRM_FORMAT_NV12:
5197 case DRM_FORMAT_NV21:
5203 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
5206 * drm_rotation_simplify() - Try to simplify the rotation
5207 * @rotation: Rotation to be simplified
5208 * @supported_rotations: Supported rotations
5210 * Attempt to simplify the rotation to a form that is supported.
5211 * Eg. if the hardware supports everything except DRM_REFLECT_X
5212 * one could call this function like this:
5214 * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
5215 * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
5216 * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
5218 * to eliminate the DRM_ROTATE_X flag. Depending on what kind of
5219 * transforms the hardware supports, this function may not
5220 * be able to produce a supported transform, so the caller should
5221 * check the result afterwards.
5223 unsigned int drm_rotation_simplify(unsigned int rotation,
5224 unsigned int supported_rotations)
5226 if (rotation & ~supported_rotations) {
5227 rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
5228 rotation = (rotation & ~0xf) | BIT((ffs(rotation & 0xf) + 1) % 4);
5233 EXPORT_SYMBOL(drm_rotation_simplify);
5236 * drm_mode_config_init - initialize DRM mode_configuration structure
5239 * Initialize @dev's mode_config structure, used for tracking the graphics
5240 * configuration of @dev.
5242 * Since this initializes the modeset locks, no locking is possible. Which is no
5243 * problem, since this should happen single threaded at init time. It is the
5244 * driver's problem to ensure this guarantee.
5247 void drm_mode_config_init(struct drm_device *dev)
5249 mutex_init(&dev->mode_config.mutex);
5250 drm_modeset_lock_init(&dev->mode_config.connection_mutex);
5251 mutex_init(&dev->mode_config.idr_mutex);
5252 mutex_init(&dev->mode_config.fb_lock);
5253 INIT_LIST_HEAD(&dev->mode_config.fb_list);
5254 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
5255 INIT_LIST_HEAD(&dev->mode_config.connector_list);
5256 INIT_LIST_HEAD(&dev->mode_config.bridge_list);
5257 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
5258 INIT_LIST_HEAD(&dev->mode_config.property_list);
5259 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
5260 INIT_LIST_HEAD(&dev->mode_config.plane_list);
5261 idr_init(&dev->mode_config.crtc_idr);
5262 idr_init(&dev->mode_config.tile_idr);
5264 drm_modeset_lock_all(dev);
5265 drm_mode_create_standard_connector_properties(dev);
5266 drm_mode_create_standard_plane_properties(dev);
5267 drm_modeset_unlock_all(dev);
5269 /* Just to be sure */
5270 dev->mode_config.num_fb = 0;
5271 dev->mode_config.num_connector = 0;
5272 dev->mode_config.num_crtc = 0;
5273 dev->mode_config.num_encoder = 0;
5274 dev->mode_config.num_overlay_plane = 0;
5275 dev->mode_config.num_total_plane = 0;
5277 EXPORT_SYMBOL(drm_mode_config_init);
5280 * drm_mode_config_cleanup - free up DRM mode_config info
5283 * Free up all the connectors and CRTCs associated with this DRM device, then
5284 * free up the framebuffers and associated buffer objects.
5286 * Note that since this /should/ happen single-threaded at driver/device
5287 * teardown time, no locking is required. It's the driver's job to ensure that
5288 * this guarantee actually holds true.
5290 * FIXME: cleanup any dangling user buffer objects too
5292 void drm_mode_config_cleanup(struct drm_device *dev)
5294 struct drm_connector *connector, *ot;
5295 struct drm_crtc *crtc, *ct;
5296 struct drm_encoder *encoder, *enct;
5297 struct drm_bridge *bridge, *brt;
5298 struct drm_framebuffer *fb, *fbt;
5299 struct drm_property *property, *pt;
5300 struct drm_property_blob *blob, *bt;
5301 struct drm_plane *plane, *plt;
5303 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
5305 encoder->funcs->destroy(encoder);
5308 list_for_each_entry_safe(bridge, brt,
5309 &dev->mode_config.bridge_list, head) {
5310 bridge->funcs->destroy(bridge);
5313 list_for_each_entry_safe(connector, ot,
5314 &dev->mode_config.connector_list, head) {
5315 connector->funcs->destroy(connector);
5318 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
5320 drm_property_destroy(dev, property);
5323 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
5325 drm_property_destroy_blob(dev, blob);
5329 * Single-threaded teardown context, so it's not required to grab the
5330 * fb_lock to protect against concurrent fb_list access. Contrary, it
5331 * would actually deadlock with the drm_framebuffer_cleanup function.
5333 * Also, if there are any framebuffers left, that's a driver leak now,
5334 * so politely WARN about this.
5336 WARN_ON(!list_empty(&dev->mode_config.fb_list));
5337 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
5338 drm_framebuffer_remove(fb);
5341 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
5343 plane->funcs->destroy(plane);
5346 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
5347 crtc->funcs->destroy(crtc);
5350 idr_destroy(&dev->mode_config.tile_idr);
5351 idr_destroy(&dev->mode_config.crtc_idr);
5352 drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
5354 EXPORT_SYMBOL(drm_mode_config_cleanup);
5356 struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
5357 unsigned int supported_rotations)
5359 static const struct drm_prop_enum_list props[] = {
5360 { DRM_ROTATE_0, "rotate-0" },
5361 { DRM_ROTATE_90, "rotate-90" },
5362 { DRM_ROTATE_180, "rotate-180" },
5363 { DRM_ROTATE_270, "rotate-270" },
5364 { DRM_REFLECT_X, "reflect-x" },
5365 { DRM_REFLECT_Y, "reflect-y" },
5368 return drm_property_create_bitmask(dev, 0, "rotation",
5369 props, ARRAY_SIZE(props),
5370 supported_rotations);
5372 EXPORT_SYMBOL(drm_mode_create_rotation_property);
5377 * Tile groups are used to represent tiled monitors with a unique
5378 * integer identifier. Tiled monitors using DisplayID v1.3 have
5379 * a unique 8-byte handle, we store this in a tile group, so we
5380 * have a common identifier for all tiles in a monitor group.
5382 static void drm_tile_group_free(struct kref *kref)
5384 struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
5385 struct drm_device *dev = tg->dev;
5386 mutex_lock(&dev->mode_config.idr_mutex);
5387 idr_remove(&dev->mode_config.tile_idr, tg->id);
5388 mutex_unlock(&dev->mode_config.idr_mutex);
5393 * drm_mode_put_tile_group - drop a reference to a tile group.
5395 * @tg: tile group to drop reference to.
5397 * drop reference to tile group and free if 0.
5399 void drm_mode_put_tile_group(struct drm_device *dev,
5400 struct drm_tile_group *tg)
5402 kref_put(&tg->refcount, drm_tile_group_free);
5406 * drm_mode_get_tile_group - get a reference to an existing tile group
5408 * @topology: 8-bytes unique per monitor.
5410 * Use the unique bytes to get a reference to an existing tile group.
5413 * tile group or NULL if not found.
5415 struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
5418 struct drm_tile_group *tg;
5420 mutex_lock(&dev->mode_config.idr_mutex);
5421 idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
5422 if (!memcmp(tg->group_data, topology, 8)) {
5423 if (!kref_get_unless_zero(&tg->refcount))
5425 mutex_unlock(&dev->mode_config.idr_mutex);
5429 mutex_unlock(&dev->mode_config.idr_mutex);
5434 * drm_mode_create_tile_group - create a tile group from a displayid description
5436 * @topology: 8-bytes unique per monitor.
5438 * Create a tile group for the unique monitor, and get a unique
5439 * identifier for the tile group.
5442 * new tile group or error.
5444 struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
5447 struct drm_tile_group *tg;
5450 tg = kzalloc(sizeof(*tg), GFP_KERNEL);
5452 return ERR_PTR(-ENOMEM);
5454 kref_init(&tg->refcount);
5455 memcpy(tg->group_data, topology, 8);
5458 mutex_lock(&dev->mode_config.idr_mutex);
5459 ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
5467 mutex_unlock(&dev->mode_config.idr_mutex);